EP4065375A1

EP4065375A1 - Printing machine and method for cleaning at least one nozzle bar of at least one printing assembly

Info

Publication number: EP4065375A1
Application number: EP20820887.6A
Authority: EP
Inventors: Christian Arnold; Joachim Keupp; Wolfgang Reder; Karl Schäfer
Original assignee: Koenig and Bauer AG
Current assignee: Koenig and Bauer AG
Priority date: 2020-03-05
Filing date: 2020-12-07
Publication date: 2022-10-05
Anticipated expiration: 2040-12-07
Also published as: DE102020105975A1; WO2021175468A1; EP4065375B1; JP7311716B2; CN115003507B; US20230136315A1; US11787185B2; CN115003507A; JP2023502161A

Abstract

The invention relates to a printing machine, wherein the printing machine comprises at least one printing assembly (01) having at least four nozzle bars (04) with a respective at least one printhead (08), wherein at least one nozzle bar (04) of the at least four nozzle bars (04) has at least one printhead (08) with at least one outlet surface (09), wherein the at least one printing assembly (01) comprises at least one cleaning device (18), wherein the at least one cleaning device (18) comprises at least one cleaning element (31) with at least one fluid supply opening (38), wherein the at least one cleaning device (18) has at least one storage position and at least one use position, wherein, in the at least one storage position, the at least one cleaning device (18) is arranged along a transport direction (T) of the printing substrate (03) before or after a region between the at least one nozzle bar (04) and the transport path of the printing substrate (03), wherein the transport direction (T) is determined according to the position of the transport path of the printing substrate (03) below the at least one nozzle bar (04). The invention also relates to a method for cleaning at least one nozzle bar (04) of the at least one printing assembly (01).

Description

description

Printing machine and method for cleaning at least one nozzle bar of at least one printing unit

The invention relates to a printing machine according to the preamble of claim 1 and a method for cleaning at least one nozzle bar of at least one printing unit according to the preamble of claim 61.

Various methods are available for printing a substrate using a printing machine, for example letterpress, gravure or non-impact printing methods. Non-impact printing processes, for example thermographic processes or in particular the inkjet process, do not have a fixed, physically unchangeable printing form and can, for example, produce different print images on a printing substrate in each printing process. A non-impact printing machine usually has at least one image-generating device, in particular at least one printing unit with preferably at least one print head, for example preferably an inkjet print head. In the inkjet printing process, individual drops of a printing fluid are ejected from at least one volume of the print head and transferred to a printing substrate, so that a printed image is produced on the printing substrate. By controlling a large number of volumes of the print head individually, different print images are generated, for example, which are, for example, individualized and / or personalized and / or, for example, can be produced cost-effectively in small editions, for example.

Particularly in the field of packaging printing, regular cleaning of the components of the printing machine, in particular the print heads of the nozzle bars and / or the spaces between them, is essential. DE 102016214356 A1 discloses a printing machine comprising a cleaning device for cleaning at least one print head of a nozzle bar.

DE 11 2014003630 T5 discloses a cleaning device with a spray nozzle for spraying a cleaning solution onto a gap between two head modules of an inkjet head and two removal elements designed as wipes for removing the cleaning solution.

US 2013/0106940 A1 discloses an inkjet printing machine with an inkjet print head. The printing press has at least one wiper device with a wiper for cleaning an exit surface and with a wiper for cleaning a liquid collection point. Furthermore, an annular element is disclosed which, when arranged in a capping position, seals a liquid outlet area from its surroundings.

US 2015/0158304 A1 teaches a cleaning device for cleaning an inkjet printer with several print heads. In particular, sparingly soluble UV-based ink is cleaned from the exit surface of the print head by means of a wiper device. A cover seals the nozzles on the exit surface from their surroundings.

WO 2019/059099 A1 discloses a printing device with inkjet print heads, the print heads being moved horizontally from a printing position to a maintenance position. A cleaning device has a wiping unit with a wiping cloth, the nozzle surface being cleaned with a dry cleaning mode and a wet cleaning mode under pressure contact. Sealing elements are also provided for sealing the nozzle surface.

US 2010/0214355 A1 discloses a maintenance device for cleaning a Print head of a printing machine. A contactless cleaning of the print head takes place by means of a device for spraying cleaning liquid. Contact cleaning is carried out by means of a device with a wipe. The nozzle surface is covered by a cap after cleaning. The printhead is moved from its printing position to a maintenance position for cleaning. The wipe device is moved from a non-contact position to a contact position to perform contact cleaning.

US 2012/0038707 A1 teaches a printing device with inkjet print heads. A print head is carried by a frame, the frame having a printing position and a maintenance position. The maintenance position is shifted laterally along the axis of an impression cylinder to the printing position. A cleaning with indirect contact to the nozzle surface takes place by means of a device for ejecting a cleaning liquid. Cleaning with direct contact to the nozzle surface is carried out by means of a device with a cloth and a cutter. The devices cleaning the nozzle surface are arranged between the printing position and the maintenance position, the nozzle surface being cleaned during the movement from the maintenance position to the printing position or vice versa.

DE 696 02 301 T2 discloses an ink jet printing system with multiple print heads in a carriage member. The carriage member moves along a print path through a print zone. A first service station for performing a first wiping action on a first printhead and a second service station for performing a second wiping action on a second printhead are positioned in the printhead path. The first washing operation uses a movable squeegee blade while the second washing operation uses a fixed blade. The first and the second maintenance station are arranged adjacent to one another on a first side of the print zone. US 2014/0292911 A1 discloses an inkjet printing device with a maintenance unit. The maintenance device has a unit for applying cleaning fluid to the nozzle surface of a print head and an absorption unit with a wiping element and at least one cover unit. By means of a movement device, the nozzle surface and the maintenance device are arranged opposite one another in relation to one another.

DE 102016 125321 A1 teaches a device for cleaning print heads. The device has at least one spray nozzle for generating a cleaning jet and at least one wiper lip. The spray nozzle and the wiper lip are arranged on a common slide or slide that are separate from one another, the slide or slides being or are movably arranged on a linear guide.

The invention is based on the object of creating a printing machine and a method for cleaning at least one nozzle bar of at least one printing unit.

The object is achieved according to the invention by the features of claim 1 and claim 61.

The dependent claims show advantageous developments and / or embodiments of the solutions found.

The advantages that can be achieved with the invention are in particular that a printing press is created. The printing machine preferably comprises at least one printing unit with at least four nozzle bars, each with at least one print head. The at least one printing unit preferably comprises at least one cleaning device. The at least one printing unit preferably comprises the at least one cleaning device and at least one cleaning device. The at least one cleaning device preferably comprises at least one Cleaning element with at least one fluid supply opening. The at least one cleaning device preferably comprises at least one removal unit with at least one contact element. The at least one contact element is preferably designed as a wipe. The at least one removal unit preferably has at least one storage position and at least one use position. The at least one removal unit is preferably arranged in the at least one insert position within a region between at least one nozzle bar of the at least four nozzle bars and a transport path for a printing material. The at least one cleaning element preferably has at least one storage position and at least one use position. The at least one cleaning element is preferably arranged in the at least one insert position within the area between the at least one nozzle bar and the transport path of the printing material. Optionally, the at least one cleaning device and / or the at least one cleaning device are preferably arranged in the area between the at least one nozzle bar and the transport path for printing material. At least one nozzle bar of the at least four nozzle bars preferably has at least one printing position and at least one maintenance position. The at least one nozzle bar is preferably arranged either in the printing position or in the at least one maintenance position. The at least one maintenance position is preferably arranged in the vertical direction, preferably in a z-direction, above the printing position. The at least one cleaning device is preferably designed to clean the at least one print head, preferably at least one exit surface, in a contactless manner. Additionally or alternatively, the at least one cleaning device is preferably designed to come into direct contact with the at least one print head. The at least one cleaning device preferably has at least one storage position and at least one use position. The at least one cleaning device is preferably arranged in the at least one storage position along a transport direction of printing material at the position of the transport path below the at least one nozzle bar before or after the at least one nozzle bar. At least one The cleaning device is preferably arranged in the at least one storage position along an x-direction, which preferably corresponds to a direction along a shortest side of the respective nozzle bar, before or after the at least one nozzle bar. The at least one cleaning device is preferably arranged in the at least one use position within a region between the at least one nozzle bar and the transport path for printing material.

A method for cleaning at least one nozzle bar of at least one printing unit is advantageously created. The at least printing unit preferably comprises at least four nozzle bars, each with at least one print head. At least one print head, preferably at least one exit surface of at least one print head, at least one nozzle bar of the at least four nozzle bars is preferably cleaned without contact by at least one cleaning device. At least one print head, preferably at least one exit surface of at least one print head, at least one nozzle bar of the at least four nozzle bars is preferably cleaned contactlessly by at least one cleaning device with at least one cleaning element arranged in an operating position with at least one fluid supply opening. The at least cleaning element is preferably arranged in the use position within an area between the at least one nozzle bar and a transport path for printing material. The at least one cleaning device is preferably arranged in at least one storage position along a transport direction of printing material at the position of the transport path below the at least one nozzle bar before or after the at least one nozzle bar. The at least one cleaning device is preferably arranged in at least one position of use within a region between the at least one nozzle bar and the transport path of the at least one printing material. The at least one print head of the at least one nozzle bar of the at least four nozzle bars is preferably carried along by at least one cleaning device with at least one removal unit arranged in at least one operating position cleaned at least one contact element designed as a wipe. The at least one removal unit is preferably arranged in at least one use position within the area between the at least one nozzle bar and the transport path for printing material. The at least one cleaning device and / or the at least one cleaning device preferably optionally cleans the at least one print head of the at least one nozzle bar of the at least four nozzle bars.

The at least one nozzle bar is preferably arranged either in a printing position or in at least one maintenance position. The at least one nozzle bar is preferably moved in a direction with a larger vertical component and a smaller horizontal component from the printing position into the at least one maintenance position and / or from the at least one maintenance position into the printing position. Optionally, the at least one cleaning device and / or the at least one cleaning device are preferably moved into an area between the at least one nozzle bar and the transport path for printing material.

The printing machine advantageously comprises at least one printing unit with at least one nozzle bar, the at least one printing unit preferably including at least one cleaning device, the at least one nozzle bar preferably including at least one print head, the at least one nozzle bar preferably having at least one printing position and at least one maintenance position, wherein the at least one printing unit preferably comprises at least one cleaning device. The at least one cleaning device advantageously comprises at least one cleaning element with at least one fluid supply opening. Advantageously, additionally or alternatively, the at least one cleaning device comprises at least one removal unit with at least one contact element. Advantageously, the at least one cleaning device and / or the at least one cleaning device optionally comes into contact with the at least one print head. The at least one printing unit advantageously comprises the at least one cleaning device and the at least one cleaning device. This advantageously enables optimal cleaning of the at least one nozzle bar and / or its at least one print head of the at least one printing unit of the printing machine. A distinction can advantageously be made between a cleaning device and a cleaning device for cleaning the at least one nozzle bar. This makes it possible to react advantageously to the respective requirements and / or according to the occurring or present operating states of the at least one nozzle bar, in particular to how long the at least one nozzle bar has been in a printing or non-printing operating state and / or in particular after cleaning will exhibit. Additionally or alternatively, it depends on the degree of contamination and / or how intensively the at least one nozzle bar and / or its at least one print head is to be cleaned, for example due to the printing fluid used.

Advantageously, the at least one cleaning device and / or the at least one cleaning device avoids disrupting the transport of a printing material which is conveyed along the transport path. At least one printing material is preferably conveyed along the transport path through the at least one printing unit, while at least one nozzle bar of the printing unit is cleaned by the at least one cleaning device and / or by the at least one cleaning device. For example, this at least one printing material is printed by at least one further nozzle bar, for example the at least one printing unit and / or at least one further printing unit. Advantageously, downtimes of the printing press are minimized.

The contact of the at least one print head with the at least one cleaning device is advantageously the print head, in particular its The exit surface is designed to be gentle, since in this case in particular the exit surface of the print head is advantageously arranged in no direct contact with the cleaning device and thus damage in particular to the exit surface is avoided. In particular, the at least one cleaning device is designed to come into direct contact with the at least one print head. As a result, the at least one cleaning device is preferably designed to clean particularly heavy dirt and / or at least partially insoluble residues of printing fluid and / or to carry out intensive cleaning of the at least one print head. Cleaning the at least one print head in direct contact with the at least one contact element advantageously removes dirt and / or printing fluid which, for example, was not removed by cleaning with the at least one cleaning element and / or which, for example, is completely dried.

In particular, a combination of cleaning with at least one cleaning element of the cleaning device and at least one contact unit of the cleaning device advantageously removes dirt and / or printing fluid completely from the at least one print head of the at least one nozzle bar and / or from a positioning gap between two adjacent print heads.

The at least one cleaning device preferably has at least one guide system. The at least one guide system preferably comprises at least one guide element. The at least one cleaning device is preferably designed to move and / or move along the at least one guide element of the at least one guide system from the at least one storage position to the at least one use position or vice versa and / or is moved. The at least one guide element advantageously enables the at least one cleaning device to be guided quickly and safely. The risk of the cleaning device tilting and, for example, damaging the at least one exit surface as a result, is minimized. Advantageously, at least two cleaning devices have a common guide system, more preferably at least one common guide element of the guide system. Thus, the at least two cleaning devices are advantageously designed to be movable and / or moving together, in particular from the at least one storage position to the at least one use position or vice versa. This advantageously results in a space-saving design of the at least one guide system and / or in simple handling of the at least two cleaning devices. The at least two cleaning devices are advantageously designed to move in or out of an area between the at least one nozzle bar and a transport path of at least one printing material due to the advantageous design of the at least one guide system, in particular without, for example, interrupting the movement of a printing material moving along the transport path and / or to influence. The at least two cleaning devices are advantageously arranged in an aligned manner regardless of their position with respect to the at least one nozzle bar, for example by being inclined with respect to the z-direction, and are advantageously designed to be movable and / or moving in the aligned arrangement. The at least two cleaning devices advantageously have at least two common guide systems. In particular, this prevents the cleaning devices from tilting along the working width of the printing assembly and additionally or alternatively fixes the positioning and / or aligned arrangement of the at least two cleaning devices over the working width. As a result, several rows of print heads are advantageously cleaned at the same time, for example. An inexpensive guide system is advantageously created.

The at least one cleaning device is advantageously designed to be movable and / or movable along at least one guide element. In an advantageous According to the embodiment, at least two removal units of the at least one cleaning device are designed to be movable and / or movable along the at least one guide element. The advantageous embodiment of the at least one guide element saves space within the printing unit.

The printing unit advantageously comprises the at least one sealing element. The at least one sealing element is advantageously designed to protect the at least one print head, preferably the at least two print heads, of the at least one nozzle bar. Thus, printing fluid is advantageously preserved in the at least two print heads, in particular by the at least one sealing element, and / or protected from drying out and / or protected from sticking of at least one nozzle of the exit surface of the print head. The at least one sealing element is advantageously arranged in contact with the at least two print heads when the at least one nozzle bar is in a maintenance position, but is arranged within the printing assembly. The print heads therefore advantageously remain in the printing assembly or in their position in the nozzle bar. This advantageously eliminates the need to align the print heads before they are arranged and / or are arranged again in at least one printing position after contact with the at least one sealing element. In particular, an arrangement of at least one nozzle bar of the printing unit in the printing position or in at least one maintenance position is advantageously possible and / or at least one nozzle bar of the printing unit is arranged in the printing position or in the at least one maintenance position if at least one nozzle bar different therefrom, in particular at least two print heads of the nozzle bar different therefrom are in contact with the at least one sealing element. The nozzle bar, which is arranged in the at least one maintenance position and is not in contact with the at least one sealing element, is advantageously cleaned in the at least one maintenance position by a cleaning device and / or a cleaning device and / or a further one is advantageously used Maintenance action such as replacing print heads is performed. In an advantageous embodiment, the at least one cleaning device comprises the at least one sealing element. The at least one sealing element is then advantageously designed to be movable and / or moving via at least one guide system of the cleaning device, which results, for example, in a space saving and / or easier handling within the printing unit.

Another advantage is that the at least one removal unit of the at least one cleaning device is designed to clean the at least one print head of the at least one nozzle bar. In particular by a method along the guide element, the at least one removal unit is advantageously designed to clean at least two print heads arranged in a row along the longest side of the at least one nozzle bar, in particular one after the other. Advantageously, additionally or alternatively, the at least one removal unit is arranged by the method along the at least one guide element in at least one storage position or at least one use position. In particular, the at least one removal unit remains regardless of its position within the printing assembly. By arranging at least two removal units on at least one common carrier, at least two rows of print heads can advantageously be cleaned and / or cleaned, in particular at the same time. This results in, for example, a time saving in the cleaning step and, additionally or alternatively, a saving in space, in particular since no guide elements for the individual distance units are necessary. In an advantageous embodiment, a driven or connected to a drive storage of the contact element, which is advantageously designed as a wipe, that the contact is released from a contact element used in a cleaning step to the at least one print head and that a not yet used in a cleaning step and / or clean contact element comes into contact with the at least one print head. The advantageous embodiment of the at least one pressure element ensures on advantageously a gentle bringing of the at least one contact element into contact with the at least one print head. In particular, the resilient design and / or the setting of the contact pressure protects the at least one print head, in particular its exit surface, from damage. In particular, optimal positioning and thus optimal cleaning of the at least one contact element on the at least one print head is ensured by an inclination of the removal unit that corresponds to the inclination of the print head.

Further advantages can be seen from the description below.

Embodiments of the invention are shown in the drawings and are described in more detail below.

Show it:

1 shows a schematic perspective illustration of at least one

Printing unit with at least one nozzle bar and at least one opposed printing substrate guide element and one printing substrate;

2a shows a schematic representation of at least one nozzle bar with two rows of obliquely overlapping print heads;

2b shows a schematic representation of an alternative embodiment of at least one nozzle bar with a plurality of print heads which are arranged offset to one another in a double row;

3a shows a schematic perspective illustration of at least two

Print heads which are arranged at a distance from one another by a positioning gap, with at least one first, the positioning gap associated feed device, and a second feed device, wherein the second feed device is shown as a section;

3b shows a schematic breakdown of an exemplary feed device;

4a a schematic representation of a printing unit with several

Nozzle bar, wherein at least one nozzle bar is arranged in the printing position and at least one nozzle bar is arranged in the rest position;

4b shows a schematic representation of a printing unit with several

Nozzle bar according to FIG. 4a, at least one nozzle bar being arranged in a first maintenance position;

4c shows an exemplary illustration of a printing unit with four nozzle bars arranged in the first maintenance position and four cleaning devices arranged in a position of use;

4d shows a schematic representation with two nozzle bars arranged in the printing position and two cleaning devices in each case arranged on a common guide system in a storage position;

4e shows an exemplary illustration of four nozzle bars arranged in the rest position and four cleaning devices and one cleaning device;

4f shows a schematic representation of four nozzle bars arranged in the rest position, and four cleaning devices arranged in the storage position and a cleaning device with removal units arranged in an operating position; 4g shows a schematic representation of four nozzle bars arranged in a second maintenance position and four cleaning devices arranged in the storage position and a cleaning device with removal units arranged in an operational position;

4h shows an exemplary illustration of four nozzle bars arranged in a second maintenance position and four cleaning devices arranged in the storage position and a cleaning device with removal units arranged in an operational position;

5a shows a view of at least four print heads within a row of a nozzle bar and a cleaning device, at least one cleaning element being arranged opposite at least one print head and in direct or indirect contact with it, and only four print heads being shown for the sake of clarity;

Fig. 5b is a sectional view of the print heads of the nozzle bar and the

Cleaning device according to a section along the line V - V in Fig. 5a;

6a shows a representation of a cleaning element;

6b shows a representation of the cleaning element according to FIG. 6a in a perspective view;

6c shows an illustration of an alternative cleaning element in a perspective view;

Figure 7a is an illustration of a further alternative embodiment of a Cleaning element;

7b shows a representation of the further alternative embodiment of a cleaning element according to FIG. 7a in a perspective view;

7c shows a representation of the further alternative embodiment of a

Cleaning element according to FIG. 7a and / or FIG. 7b with at least one additional wiper;

7d shows an arrangement of a cleaning element with four cleaning areas on a nozzle bar with four rows of print heads;

8a shows an exemplary representation of a nozzle bar with two rows of

Printheads in contact with at least one cleaning element of the at least one cleaning device;

8b shows an exemplary illustration of a nozzle bar with two rows of print heads in contact with at least one sealing element each;

9 shows a first embodiment of a printing assembly with a cylindrical printing substrate guide element, two cleaning devices each having a common guide system;

10 shows a further exemplary embodiment of a printing assembly with a cylindrical printing substrate guide element, two cleaning devices each having a common guide system and wherein the printing assembly comprises, in addition to the cleaning device, a cleaning device with at least two removal units; 11 shows the further exemplary embodiment of a printing unit with a cylindrical printing substrate guide element from FIG. 10 in a side view;

12a shows an exemplary illustration of a cleaning device with removal units arranged in the storage position in the case of a printing unit with a cylindrical printing material guide element;

FIG. 12b shows an exemplary illustration of the cleaning device from FIG. 12a with removal units arranged in the at least one operating position; FIG.

13a shows an exemplary distance unit in a three-dimensional representation with a supply of contact elements arranged in a housing;

FIG. 13b shows an exemplary removal unit from FIG. 13a in a lateral section; FIG.

13c shows an exemplary removal unit from FIGS. 13a and 13b in a further lateral section;

13d shows an exemplary removal unit from FIGS. 13a to 13c in a three-dimensional representation with an open supply;

14 shows several exemplary distance units on a common carrier;

15 shows an alternative exemplary cleaning device with two removal units arranged horizontally next to one another in a printing unit with a linear transport path in the x direction;

16a shows a further alternative embodiment of a printing assembly with a linear transport path in the x direction, the printing assembly at least one Cleaning device in storage position and comprising at least one cleaning device insert position;

16b shows a further illustration of the printing assembly with a linear transport path in the x direction from FIG. 16a, the nozzle bar being hidden;

16c shows a further illustration of the printing assembly with a linear transport path in the x direction from FIG. 16a or FIG. 16b, the cleaning device being pivoted into its storage position and the cleaning device being arranged in its storage position;

16d shows a further illustration of the printing unit with a linear one

Transport path in the x direction from FIG. 16a, FIG. 16b or FIG. 16c, the cleaning device being pivoted into its storage position and the cleaning device being arranged in its position of use;

17a shows a side view of the printing assembly with a linear transport path in the x direction corresponding to FIG. 16a or FIG. 16b, the cleaning device being arranged in the use position and the cleaning device being arranged in the storage position;

17b shows a side view of the printing assembly with a linear transport path in the x direction corresponding to FIG. 16c, the cleaning device being pivoted into its storage position and the cleaning device being arranged in its storage position;

FIG. 17c shows a side view of the printing assembly with a linear transport path in the x direction corresponding to FIG. 16d, with the cleaning device in its Storage position is pivoted and the cleaning device is arranged in its use position.

A printing machine comprises at least one printing unit 01 and at least one printing substrate guide element 02 for guiding at least one printing substrate 03 a print head 08, preferably at least one inkjet print head 08, more preferably a print head 08 operating according to the piezo inkjet method. At least one printing material guide element 02 is preferably assigned to the relevant nozzle bar 04. The at least one print head 08 has at least one exit surface 09. In the piezo inkjet method, droplets of the print head 08 are preferably formed and thrown out via mechanical deformation of at least one nozzle chamber of the print head 08, in particular as a result of an electronic signal and the piezoelectric properties of the material of the nozzle chamber. For example, the printing press has at least two printing assemblies 01 each with at least one, preferably at least two, more preferably at least four, nozzle bars 04. For example, at least eight different colors can thus be printed and / or the printing material 03 can be printed on both the top and the bottom.

In this document, the printing press is a machine which applies at least one printing fluid to at least one printing substrate 03 and / or is capable of applying.

The at least one printing material 03 is above and below a substrate which can be printed with a medium, in particular a printing fluid, by the at least one printing assembly 01. The printing material 03 is preferably in the form of paper and / or cardboard and / or corrugated cardboard and / or cardboard educated. The printing material 03 is designed in particular as a web or sheet.

According to DIN 6730, paper is a flat material consisting essentially of fibers, mostly of vegetable origin, which by dewatering a

Pulp suspension is formed on a sieve. This creates a fiber felt that is then dried. The weight per unit area of paper is preferably a maximum of 225 g / m ² . According to DIN 6730, cardboard is a flat material consisting essentially of fibers of vegetable origin, which is formed by dewatering a fiber suspension on one or between two sieves. The fiber structure is compressed and dried. Cardboard is preferably manufactured from cellulose by gluing or pressing it together. Cardboard is preferably designed as solid cardboard or corrugated cardboard. The mass per unit area of cardboard is preferably more than 225 g / m ² . Corrugated cardboard is cardboard made from one or more layers of corrugated paper that is glued to one layer or between several layers of another preferably smooth paper or cardboard. In the foregoing and in the following, the term cardboard denotes a sheet-like paper structure, preferably coated on one side, with a mass per unit area of at least 150 g / m ² and a maximum of 600 g / m ² . A cardboard box preferably has a high strength relative to paper.

Preferably, the at least one printing substrate 03, for example at least part of the at least one printing substrate 03, is designed as an intermediate product for producing an end product and / or is further processed, for example, into a desired or required end product and / or is designed to be further processable for this purpose. For example, the at least one printing material 03 is designed as paper and is further processed into corrugated cardboard. The desired or required end product, which was preferably produced by further processing at least part of the printing material 03, is preferably a packaging material, more preferably at least one folding box. The at least one printing material 03 preferably has at least one pigment coating. The at least one printing substrate 03 preferably has a pigment coating of at least 5%, preferably at least 8%, more preferably at least 10%, of the total weight of the at least one printing substrate 03. Additionally or alternatively, the at least one printing substrate 03 has a pigment coating of a maximum of 30%, preferably a maximum of 25%, more preferably a maximum of 20%, of the total weight of the at least one printing substrate 03. In the foregoing and in the following, a pigment coating preferably denotes a coating material applied to the surface of the at least one printing material 03. The printing material 03, which has at least one paint, is preferably referred to as a coated printing material 03. The surface of the printing material 03 is preferably at least partially refined by applying the at least one coating material. A coated printing substrate 03 preferably has better printability and / or a smoother surface and / or printing fluid absorption adapted to the required print image compared to an uncoated printing substrate 03 without an applied paint. The at least one paint preferably has at least one binder and / or at least one additive and / or at least one pigment.

The at least one printing substrate 03 preferably has a total weight, i.e. preferably including the at least one pigment coating, of at least 120 g / m ² (one hundred and twenty grams per square meter), preferably of at least 130 g / m ² (one hundred and thirty grams per square meter), more preferably of at least 145 g / m ² (one hundred and forty-five grams per square meter), and additionally or alternatively a total weight of a maximum of 260 g / m ² (two hundred and sixty grams per square meter), preferably a maximum of 240 g / m ² (two hundred and forty grams per square meter), more preferably a maximum 230 g / m ² (two hundred and thirty grams per square meter). Preferably, additionally or alternatively, the at least one printing material 03 has a thickness of at least 120 μm (one hundred and twenty micrometers), preferably at least 140 μm (one hundred and forty micrometers), more preferably 160 μm (two hundred and eighty micrometers) Micrometers), and additionally or alternatively a maximum thickness of 300 μm (three hundred micrometers), preferably a maximum of 280 μm (two hundred and eighty micrometers), more preferably a maximum of 260 μm (two hundred and sixty micrometers).

The at least one nozzle bar 04 preferably comprises at least two print heads 08 each, which are arranged next to one another, in particular adjoining one another, preferably adjacent, in a y-direction and / or which in particular extend over an entire working width of the printing assembly 01. Preferably so many print heads 08 are arranged along the longest side of the nozzle bar 04 in the nozzle bar 04 that an entire working width of the printing unit 01 and / or the nozzle bar 04 and / or the printing machine is covered by at least one print head 08 in each case. The at least one nozzle bar 04 preferably extends over the entire working width of the printing assembly 01 and / or the printing press. The respective print heads 08 of a nozzle bar 04 are preferably each arranged in the y direction in at least one row, preferably in at least two rows, for example in exactly two rows. The at least one nozzle bar 04 preferably comprises the at least two rows of at least two juxtaposed print heads 08. The at least one nozzle bar 04 preferably extends over the entire working width of the printing unit 01. In particular, for example, at least two print heads 08 of the nozzle bar 04 are each in a y Direction arranged next to one another and / or connected to one another to form a group of print heads 08 via a, for example, fixed axis in the y-direction. The at least one nozzle bar 04 preferably has a longitudinal extent in the y direction. The at least one nozzle bar 04 preferably extends along its width in the x direction. The longitudinal extension is preferably greater than the width extension. The longitudinal extent preferably has a greater number of print heads 08 than the extent in the direction of the width.

The y direction and an x direction and a z direction form a Cartesian one Coordinate system. The x direction preferably corresponds to a direction along a shortest side of the respective nozzle bar 04. The y direction preferably corresponds to a direction along a longest side of the respective nozzle bar 04. The y direction is preferably parallel to an axis of rotation of the at least one printing substrate guide element 02. The x direction and the y direction preferably span a horizontal plane. The longest side of the at least one nozzle bar 04 is preferably that side of the at least one nozzle bar 04 along which side at least two, preferably at least four, more preferably at least eight, print heads 08 are arranged in a row. The at least one row of print heads 08, preferably at least two rows of print heads 08, preferably extends along the longest side of the at least one nozzle bar 04. The shortest side of the at least one nozzle bar 04 is preferably arranged orthogonally to its longest side. Only one print head 08 is preferably arranged in a row along the shortest side of the at least one nozzle bar 04. For example, two print heads 08, each of a row of print heads 08, are arranged one behind the other along the shortest side of the at least one nozzle bar. The z-direction is preferably parallel to a normal vector of a plane which is spanned by the x-direction and the y-direction. The z direction preferably corresponds to a vertical direction.

A transverse direction A is preferably a direction which in each case runs parallel to a longest side of the at least one nozzle bar 04. The transverse direction A is preferably arranged parallel to the y-direction. The x-direction is preferably arranged orthogonally to the transverse direction A. The working width is in particular parallel to the transverse direction A. Furthermore, the transverse direction A is preferably orthogonal to a transport direction T.

In the preceding and in the following, the working width is the maximum width that a printing substrate 03 may have in order to be able to use the at least one printing unit 01 of the This corresponds to the maximum width of the respective printing substrate 03 that can be processed with the at least one printing unit 01 of the printing machine Printing of the substrate 03 is used.

The area of space provided for the transport of a printing substrate 03, which the printing substrate 03 occupies at least temporarily when it is present, is the transport route. The transport route is determined by at least one transport means, in particular by the at least one printing substrate guide element 02. The at least one printing substrate guide element 02 is preferably designed as at least one roller and / or at least one cylinder and / or at least one support and / or at least one other device for guiding the printing substrate 03 in a printing operating state of the printing machine.

The transport direction T is a direction provided for a printing operating state of at least one printing assembly 01 of the printing press, in which direction the printing substrate 03 is transported at any point on the transport path if it is present. The transport direction T is preferably a direction which in each case runs parallel to a shortest side of the at least one nozzle bar 04. The transverse direction A is the axial direction orthogonal to the transport direction T. For example, the transport direction T is parallel to the x-direction and / or, for example, the transverse direction A is parallel to the y-direction of the Cartesian coordinate system at a location of the smallest distance from a relevant print head 08 to the transport route.

In the foregoing and in the following, a printing fluid denotes inks, printing inks and / or lacquers, as well as other materials that are transferred to a printing substrate 03 by a printing machine or at least one printing unit 01 of the printing machine and / or transferable. A printing fluid located in a volume of the print head 08, in particular in the form of drops, can preferably leave the volume of the relevant print head 08 through an opening in the exit surface 09. The at least one nozzle bar 04 preferably has cyan (C) or magenta (M) or yellow (Y) or black (K) as the color of the printing fluid. Preferably, two different nozzle bars 04 have different pressure fluids. Preferably in each case at least one nozzle bar 04, preferably at least one nozzle bar 04 of the at least four nozzle bars 04, of the printing machine or of the at least one printing unit 01 has cyan (C) or magenta (M) or yellow (Y) or black (K) as the color of the Pressurized fluid. For example, at least one nozzle bar 04 has a further pressure fluid, which is designed, for example, as a paint or primer. The at least four nozzle bars 04 of the printing assembly 01 preferably have different colors from one another.

The pressure fluid of the at least one print head 08 is preferably designed as a pressure fluid for packaging printing and / or for printing a packaging material. The at least one nozzle bar 04, in particular the at least one print head 08, preferably has printing fluid which has a viscosity, preferably a dynamic viscosity, of at least 3 mPa * s (three millipascal seconds), preferably at least 4.5 mPa * s (four point five Millipascal second), and / or which has a viscosity of a maximum of 6 mPa * s (six millipascal second), preferably a maximum of 5.5 mPa * s (five point five millipascal second). Preferably, the preceding values of the viscosity relate to the viscosity between 20 ° C (twenty degrees Celsius) and 40 ° C (forty degrees Celsius), preferably of at least 25 ° C (twenty-five degrees Celsius) and / or a maximum of 35 ° C (thirty-five) Degrees Celsius), and / or were preferably determined in accordance with DIN EN ISO 2884-1: 2006-09. The printing fluid is preferably water-based and / or at least partially water-soluble and / or preferably has at least one pigment. The at least one nozzle bar 04 preferably has printing fluid which contains a pigment content of the printing fluid at least 1%, preferably of at least 2%, more preferably of at least 3%, more preferably of at least 4%, and / or which preferably has a pigment content of the printing fluid of a maximum of 18%, preferably of a maximum of 14%, more preferably of a maximum of 10 %, more preferably of a maximum of 7%.

For example, the completely dried printing fluid with cleaning agent is more difficult to dissolve than printing fluid with a residual content of liquid printing fluid.

A cleaning agent and / or cleaning fluid denotes in the foregoing and in the following in particular a liquid which is used when cleaning individual components of a printing press, in particular for cleaning at least one exit surface 09 of at least one print head 08. The cleaning agent is preferably used to remove residues of the at least one printing fluid on components of the printing machine, in particular the exit surface 09 of at least one print head 08 and / or a positioning gap 07 between two adjacent print heads 08. For example, the cleaning agent contains water and / or at least one Surfactant and / or at least one solvent. For example, the at least one cleaning fluid has pressure fluid, which preferably does not contain any pigments. The at least one cleaning fluid is preferably designed to dissolve the pressure fluid of the at least one nozzle bar 04 at least partially.

A printing unit 01 comprises at least one nozzle bar 04. For example, a printing unit 01 comprises at least two nozzle bars 04, preferably at least four nozzle bars 04, for example exactly four nozzle bars 04. The at least one nozzle bar 04 is arranged, for example, in at least one printing position, for example shown in FIG. 1 The printing position describes that position of the nozzle bar 04 in which the nozzle bar 04 is arranged in a printing operating state of the printing machine. At least one printing material 03 is preferably in the printing operating state by the at least one print head 08 of the at least a nozzle bar 04 arranged in the printing position, preferably of the at least one nozzle bar 04 of the at least four nozzle bars 04, printed with printing fluid. A respective printhead 08 arranged in its printing position is preferably characterized in that the respective exit surface 09 is separated from the intended transport path for at least one printing substrate 03 and / or from the at least one printing substrate 03 and / or from the printing substrate guide element 02 assigned to the respective nozzle bar 04 Has a distance that is at most 5 mm (five millimeters), preferably at most 1.5 mm (one point five millimeters) and / or at least 0.5 mm (zero point five millimeters), preferably at least 1.0 mm (one point zero millimeters). The at least one printing unit 01 preferably comprises at least one cleaning device 18 and / or at least one cleaning device 61.

For example, in a printing operating state of the printing machine, at least one printing substrate 03 is guided along the transport direction T by means of the at least one printing substrate guide element 02 through a space between the respective printing substrate guide element 02 and the relevant nozzle bar 04. The at least one print head 08, each with at least one exit surface 09, is positioned in the relevant nozzle bar 04 facing the printing material guide element 02.

The at least one nozzle bar 04 comprises at least one print head 08, in particular at least two print heads 08. The at least two print heads 08 are preferably arranged next to one another, in particular adjacent. The at least two print heads 08 are preferably arranged next to one another, in particular adjoining one another, preferably adjacent, and / or preferably partially overlapping in the x direction, along the y direction. The individual print heads 08 of the relevant nozzle bar 04 are preferably arranged along the y-direction within at least one row, preferably within at least two, in particular parallel rows, of print heads 08. The respective exit surfaces 09 are preferably at least two juxtaposed, preferably adjacent, print heads 08 in particular positioned within a row at a distance from one another in each case by the at least one positioning gap 07, in particular in the y-direction. The at least two print heads 08 arranged next to one another in the y-direction are preferably arranged at a distance from one another by the at least one positioning gap 07. More preferably, the at least two, in particular adjacent, print heads 08 arranged next to one another in the y-direction, in particular the respective exit surfaces 09 of the print heads 08 arranged next to one another in the y-direction, delimit the corresponding positioning gap 07 in the y-direction. This makes it easier to position the respective print heads 08, for example.

In one embodiment of a nozzle bar 04, the print heads 08 of the nozzle bar 04, which are preferably arranged in a row in the y-direction, for example in the x-direction, preferably in the transport direction T, are each arranged at least partially obliquely overlapping and / or preferably are The respective exit surfaces 09 of the corresponding print heads 08 are arranged spaced apart from one another in the y-direction by the one positioning gap 07 in each case.

In an alternative embodiment of a nozzle bar 04, the nozzle bar 04 comprises, for example, at least two preferably parallel rows of print heads 08, one row in the y-direction comprising at least two print heads 08, preferably a plurality of print heads 08. The print heads 08 of the rows arranged in the y-direction are preferably each offset from one another in the x-direction, whereby the respective exit surfaces 09 of the respective offset print heads 08 at least partially overlap.

A print head 08 comprises the at least one exit surface 09 and at least one, in particular at least two contact surfaces 11. The at least one contact surface 11 is preferably designed as a spacer surface 11. The contact surface 11 is preferably designed such that the exit surface 09 makes unwanted contact with components or is arranged avoiding other bodies, for example when cleaning the exit surface 09. The spacing surface 11 preferably extends over an entire extent of the respective print head 08. However, dimensions over only part of the extent of the respective print head 08 are also possible.

The exit surface 09 of a print head 08 is a surface of the respective print head 08 which faces the transport path and lies in particular in a plane whose normal vector is arranged parallel to the z-direction. The exit surface 09 is designed, for example, as a parallelogram, preferably as a non-right-angled parallelogram. Another exemplary embodiment of the exit surface 09 is a trapezoid, in particular an isosceles trapezoid. The exit surface 09 preferably comprises at least one opening, in particular a plurality of openings, through which the pressure fluid can leave at least one volume, in particular a plurality of volumes, of the relevant print head 08, preferably in the form of drops.

An exit direction of the at least one exit surface 09 is the direction in which the printing fluid, in particular in the form of drops, leaves and / or can leave the respective print head 08 through at least one opening in the corresponding exit surface 09. The exit direction of the exit surface 09 is preferably at least in one component and more preferably completely parallel to a surface normal of the exit surface 09 of the respective print head 08.

The respective exit surfaces 09 of the relevant print heads 08 of a nozzle bar 04, which are arranged next to one another in the y direction, are preferably arranged at least partially adjacent to one another in the x direction, more preferably at least partially overlapping. The sum of all exit areas 09 preferably extends within at least one row arranged in the y-direction, for example also from at least two rows, of print heads 08 of a nozzle bar 04 over the entire working width of the respective nozzle bar 04. Thus each position along a straight line in the y-direction on the transport path is assigned an opening within an exit surface 09 of the relevant nozzle bar 04 through which the printing fluid can leave a volume of a corresponding print head 08 of the nozzle bar 04.

At least two print heads 08 are preferably arranged next to one another, in particular adjacent to one another, in the y direction within a nozzle bar 04. In particular, two print heads 08 are arranged adjacent to one another within a row of print heads 08 in the y direction. For example, for positioning the relevant at least two adjacent print heads 08 of the corresponding nozzle bar 04, the respective exit surfaces 09 of the at least two print heads 08 are preferably arranged at a distance from one another by the one positioning gap 07. The at least one positioning gap 07 preferably has an extension of a maximum of 0.5 mm (zero point five millimeters), in particular a maximum of 0.2 mm (zero point two millimeters) in the y direction. In particular, the at least one positioning gap 07 has an extension in the y direction of at least 0.05 mm (zero point zero five millimeters), preferably of at least 0.1 mm (zero point one millimeter).

A cleaning direction G and / or the y-direction preferably points to a longitudinal direction of the positioning gap 07 in a positive mathematical direction of rotation, this means rotated counterclockwise, a preferably flat angle, in particular a positioning angle 46, of at least 50 ° (fifty degrees), preferably of at least 60 ° (sixty degrees), and of at most 130 ° (one hundred and thirty degrees, preferably of at most 120 ° (one hundred and twenty degrees). For example, it can be seen in particular that the longitudinal direction of the positioning gap 07, preferably the positioning angle 46 of the longitudinal direction of the positioning gap 07 is arranged in the plane spanned by the x-direction and the y-direction The longitudinal direction of the positioning gap 07 is preferably the direction in which the largest Expansion of the positioning gap 07 takes place. Preferably, the longitudinal direction of the positioning gap 07 is spanned within the plane by the x-direction and the y-direction, at least with one component oriented orthogonally to the cleaning direction G. For example, the positioning angle 46 thus corresponds to the at least partial oblique overlap in the x direction of at least two print heads 08 arranged next to one another, in particular adjacent to one another.

At least one feed device 13 for ejecting a fluid is preferably assigned to the respective positioning gap 07. The at least one feed device 13 is preferably designed as a nozzle 13, in particular as a cleaning nozzle 13. The feed device 13 is further preferably designed as a nozzle 13 for ejecting fluid, preferably a gaseous fluid and / or pressurized gas. The feed device 13 is preferably arranged in such a way that a fluid, for example a compressed gas and / or a gas mixture, in particular air, and / or a liquid, can flow through the respective feed device 13 so that the fluid can flow through the feed device 13, in particular through an outlet opening 17 , can leave in an outlet direction L. At least one component of the outlet direction L is preferably directed towards the respective positioning gap 07, preferably in the z direction. At least one feed device 13 for ejecting a fluid with an outlet direction L is preferably assigned to the respective positioning gap 07, at least one component of the outlet direction L being directed towards the respective positioning gap 07. The outlet opening 17 of the feed device 13 is preferably directed, for example, from above and / or from above the printing material guide element 02 in the direction of the printing material guide element 02 onto the positioning gap 07.

The at least one feed device 13, which is directed at the at least one positioning gap 07 between at least two juxtaposed print heads 08, preferably hinders and / or prevents, for example, the penetration of pressure fluid and / or dirt in the positioning gap 07 and / or a deposition and / or settling of pressure fluid and / or dirt in the relevant positioning gap 07. This supports, for example, in a cleaning process the cleaning of the relevant positioning gap 07 by, for example, the at least one cleaning device 18 and / or makes it more difficult for printing fluid and / or dirt to deposit and / or settle during a printing process.

The feed device 13 preferably comprises at least one feed element 14 and / or at least one outlet element 16; 43, wherein the at least one outlet element 16; 43 is preferably designed as at least one delimitation element 16 and / or at least one opening element 43, and / or the at least one outlet opening 17. The feed device 13 preferably has at least one cavity, which is preferably connected to the at least one outlet opening 17. For example, this is at least one outlet element 16; 43 each designed as at least one sheet metal or a tube. The delimiting element 16 is preferably designed to be flat, for example as a flat sheet metal. The at least one opening element 43 preferably comprises at least one recess 17, which is more preferably designed as the at least one outlet opening 17.

In a preferred embodiment, the at least one feed device 13 is preferably connected to at least one print head 08 of the respective print heads 08, which delimit the respective positioning gap 07. Additionally or alternatively, the at least one nozzle bar 04 preferably comprises the at least one feed device 13, wherein the feed device 13 is preferably positioned in the z-direction on the side of the exit surface 09 which faces away from the at least one opening of the respective exit surface 09. Additionally or alternatively, the at least one nozzle bar 04 preferably comprises the at least one feed device 13, the feed device 13 preferably in the z-direction on the side facing away from the transport path of at least one exit surface 09 of at least one print head 08 of the corresponding nozzle bar 04 and / or wherein the respective outlet direction L of the at least one feed device 13 is directed to at least one positioning gap 07 between two print heads 08, which are preferably adjacent in the y-direction.

The at least one feed device 13 is preferably arranged in the z direction on the side of the respective exit surface 09 facing away from the transport path. The at least one feed device 13 is furthermore preferably positioned on that side of the print head 08, in particular the exit surface 09, on which the print head 08 is attached to the corresponding nozzle bar 04. The at least one feed device 13 is further preferably positioned such that the outlet direction L from one side of the print head 08, in particular one side of the exit surface 09, is directed towards the at least one positioning gap 07, to which the print head 08 is attached to the corresponding nozzle bar 04 .

The feed device 13 is preferably arranged at a distance from the positioning gap 07 in the z-direction. More preferably, the feed device 13 is arranged adjacent to the positioning gap 07 in the z-direction. The outlet opening 17 is preferably arranged at a distance from the positioning gap 07 in the z-direction. More preferably, the outlet opening 17 is arranged adjacent to the positioning gap 07 in the z-direction. This means that the feed device 13, in particular the respective outlet opening 17, is preferably arranged at a distance in the z direction from the respective exit surfaces 09 of two print heads 08, which are arranged next to one another in the y direction and whose exit surfaces 09 delimit the corresponding positioning gap 07.

The outlet direction L is preferably a direction in which a fluid, for example a gas and / or a gas mixture, in particular air, and / or a liquid, the relevant feed device 13, preferably through the at least one Outlet element 16; 43, in particular the at least one outlet opening 17, can leave. The outlet direction L is preferably parallel in at least one component and / or points in an identical direction to the outlet direction of the at least one outlet surface 09 of a print head 08 of the nozzle bar 04. More preferably, at least one component of the outlet direction L is parallel and / or points in an identical one Direction to the surface normal of the exit surface 09 of the respective print head 08 and / or a direction in which the pressure fluid can leave the respective exit surface 09.

The outlet direction L is preferably parallel to a main direction, which is preferably defined by at least one side wall of the feed device 13, which is more preferably defined by the at least one delimiting element 16. The outlet direction L preferably has at least one component in the z-direction, the component in the z-direction preferably facing the transport path. For example, the outlet direction L comprises at least one component in the z direction and at least one component in the x direction, the component in the z direction being greater than the component in the x direction.

The outlet direction L is preferably a direction within a plane, which is shifted to the position of the positioning gap 07, for example along the y-direction, through the z-direction and at least one direction of a shortest delimitation, which is in a plane of the x-direction and y-direction is spanned, the respective exit surface 09 of the relevant print head 08, which preferably delimits the positioning gap 07, is spanned.

In a preferred embodiment, the at least one feed device 13 has an extension in the y direction which is identical to the extension of the respective positioning gap 07 in the y direction. The at least one feed device 13 further preferably has an extension of a maximum of 0.5 mm (zero point five millimeters), in particular from a maximum of 0.2 mm (zero point two millimeters). More preferably, the at least one feed device 13 has an extension in the y direction of at least 0.05 mm (zero point zero five millimeters), preferably of at least 0.1 mm (zero point one millimeter).

The outlet opening 17 is preferably in the plane which is defined by the z-direction and at least one direction of the shortest delimitation, which is spanned in a plane of the x-direction and y-direction, of the respective exit surface 09 of the relevant print head 08, the respective exit surface 09, the positioning gap 07 is limited, spanned, designed so that the relevant outlet opening 17 in the z-direction away from the respective exit surface 09, in particular away from the transport route, has a smaller dimension than in the z-direction near the exit surface 09, in particular near the transport route . The outlet opening 17 preferably has in the plane which is shifted to the position of the positioning gap 07, for example along the y-direction, through the z-direction and at least one direction of the shortest delimitation, which is spanned in a plane of the x-direction and y-direction, the respective exit surface 09 of the relevant print head 08, which delimits the positioning gap 07, is spanned, a shape which corresponds, for example, to a two-dimensional longitudinal section of a cone. Additionally or alternatively, the diameter of the outlet opening 17, measured in the direction of the shortest delimitation, which is spanned in a plane in the x-direction and y-direction, of the exit surface 09, which delimits the positioning gap 07, preferably increases along the z-direction in the direction of the transport path to. The at least one outlet opening 17 preferably has a maximum diameter at the point of the feed device 13 which is the smallest distance from the respective positioning gap 07. More preferably, the maximum diameter of the corresponding outlet opening 17 is greater than the extent of the at least one exit surface 09 of the relevant print head 08, which is arranged at the corresponding positioning gap 07, in the direction of the shortest delimitation of the respective exit surface 09. The delimiting element 16 preferably delimits the respective outlet opening 17 in the y-direction, preferably on one side exists between at least one cavity of the supply element 14 and the respective outlet opening 17. More preferably, the opening element 43 and in particular the respective outlet opening 17 of the corresponding feed device 13 are arranged between the respective delimiting element 16 and the respective feed element 14.

The supply element 14 preferably comprises the at least one cavity, the cavity being connected to at least one source for supplying the at least one fluid, for example a gas and / or a gas mixture, in particular air and / or a liquid, and to the outlet opening 17 .

For example, a fluid, for example a gas and / or gas mixture and / or a liquid, can be made available by the at least one source. For example, the at least one fluid, in particular compressed gas, flows through the cavity of the supply element 14 and preferably hits the delimiting element 16 through the recess 17 of the opening element 43. The fluid, for example the gas and / or the gas mixture and / or the Liquid, for example deflected in such a way that the fluid preferably emerges from the respective feed device 13 in the outlet direction L through the at least one outlet opening 17. The fluid, for example the gas and / or the gas mixture and / or the liquid, preferably has a pressure of at least 0.1 bar, in particular of at least 0.2 bar, and at most 0.7 bar, in particular, when it emerges from the feed device 13 of a maximum of 0.5 bar. In Fig. 3, an exit of the fluid in the exit direction L is indicated by dashed lines by way of example. The nozzle bar 04 comprises at least one positioning guide 06, which is preferably arranged to be movable, in particular linearly movable. The at least one nozzle bar 04 preferably has the at least one printing position and at least one maintenance position. The respective nozzle bar 04, in particular the respective print heads 08 of the nozzle bar 04, is preferably optionally to be arranged and / or arranged and / or is arranged in the at least one printing position and / or at least one rest position and / or at least one maintenance position by the respective positioning guide 06. The at least one nozzle bar 04 is preferably optionally arranged in the printing position or in the at least one maintenance position. The positioning guide 06 is preferably designed as a linear guide. For example, the at least one nozzle bar 04 has at least one positioning guide 06 in the transverse direction A before and after the nozzle bar 04. The nozzle bar 04 is preferably moved in a direction which has a larger or maximum component in the vertical direction or the z-direction and a smaller or minimum component in the horizontal direction, from the printing position to the rest position or to the at least one maintenance position and / or from the rest position into the printing position or into the at least one maintenance position and / or from the at least one maintenance position into the printing position or into the rest position and / or designed to be movable. Preferably, the at least one nozzle bar 04, preferably at least two nozzle bars 04 of the printing unit 01, more preferably at least four nozzle bars 04 of the printing unit 01, for example at the same time, by the movement in a direction which has a larger or maximum component in the vertical direction or the z- Has direction and has a smaller or minimal component in the horizontal direction, from the printing position into the rest position or into the at least one maintenance position and / or from the rest position into the printing position or into the at least one maintenance position and / or from the at least one maintenance position into the Printing position or moved into the rest position and / or is designed to be moving. The at least one maintenance position, preferably all maintenance positions, is preferably arranged in the vertical direction, preferably in the z-direction, above the printing position. The at least one nozzle bar 04 is preferably moved out of the printing position by a movement in the vertical direction and / or in the z direction and / or upwards into the at least one maintenance position, preferably into all maintenance positions. The at least one nozzle bar 04 is preferably moved from the printing position by a movement in the vertical direction, preferably in the z direction, more preferably upwards, into the at least one maintenance position, preferably into all maintenance positions. The at least one nozzle bar 04, preferably the at least one nozzle bar 04 of the at least four nozzle bars 04, is preferably arranged in the at least one maintenance position, preferably in all maintenance positions, in the vertical direction and / or in the z direction above the printing position. The at least one maintenance position, preferably all maintenance positions, is preferably arranged above a plane of the transport path, preferably at the position of the transport path which is the shortest distance from the at least one nozzle bar 04. The at least one nozzle bar 04 is preferably moved with a largest component of its direction of movement in the z-direction, preferably in the vertical direction. The at least one maintenance position, preferably all maintenance positions, is preferably at a distance greater than zero from the printing position, preferably in the z direction. The at least one nozzle bar 04, preferably the at least one nozzle bar 04 of the at least four nozzle bars 04, is optionally arranged in the printing position or in the at least one maintenance position. The at least one nozzle bar 04 is preferably moved in a direction with a larger vertical component and a smaller horizontal component from the printing position into the at least one maintenance position and / or from the at least one maintenance position into the printing position.

The at least one nozzle bar 04, preferably the at least one nozzle bar 04 of the at least four nozzle bars 04, preferably has the at least one rest position. The rest position is preferably a position in which the at least one print head 08 is off the printing machine and / or the at least one printing unit 01 and / or the at least one nozzle bar 04 and / or can be inserted into the printing machine and / or the at least one printing unit 01 and / or the at least one nozzle bar 04. At least one print head 08 of the at least one nozzle bar 04 arranged in the rest position can preferably be removed from the at least one printing unit 01. In particular, in the rest position an operator preferably has more space to get to the at least one print head 08, while in the at least one maintenance position there is preferably only enough space available to be able to carry out internal, in particular automatically, processes within the printing machine , for example cleaning at least one exit surface 09 of at least one print head 08. Preferably, a distance of the at least one print head 08 of the nozzle bar 04 arranged in the at least one rest position from the transport path of printing substrate 03 is greater than in the printing position and in the at least one maintenance position all maintenance positions. The rest position is preferably arranged in the vertical direction, preferably in the z direction, above the printing position.

The at least one maintenance position is preferably a position in which the at least one print head 08 of the relevant nozzle bar 04 can be serviced, for example cleaned and / or aligned, and / or is, preferably without the corresponding print head 08 from the nozzle bar 04 and / or or to be taken from the printing unit 01 and / or the printing machine. The respective maintenance position of a nozzle bar 04, in particular of the relevant print heads 08, is preferably characterized in that different nozzle bars 04 arranged in their respective maintenance positions have different distances from one another than in their respective printing positions and / or in their respective rest positions. The spacing of the at least one print head 08, more preferably the respective exit surface 09 of one arranged in a maintenance position, is preferred Print head 08, from the intended transport path for at least one printing substrate 03 and / or from the at least one printing substrate 03 and / or from the printing substrate guide element 02 assigned to the respective nozzle bar 04 than in the corresponding printing position. The distance of the at least one print head 08 of the at least one nozzle bar 04 arranged in the at least one maintenance position from the transport path of the printing material 03 is preferably greater than in the printing position.

The at least one nozzle bar 04 of the at least four nozzle bars 04 preferably has the at least one printing position and at least one maintenance position. The at least one nozzle bar 04 preferably has at least one maintenance position. The at least one nozzle bar 04 further preferably has at least two, further preferably at least three, maintenance positions. The at least one maintenance position is preferably designed as a first maintenance position. At least one second maintenance position is preferably designed as a second maintenance position. At least one third maintenance position is preferably designed as a third maintenance position. In a preferred embodiment, the at least two maintenance positions, in particular the first maintenance position and the second maintenance position, are mutually different positions of the at least one nozzle bar 04. A first maintenance position of the at least one nozzle bar 04 is preferably designed as a cleaning position. A second maintenance position of the at least one nozzle bar 04 is preferably designed as an intensive cleaning position. A third maintenance position of the at least one nozzle bar 04 is preferably designed as a depot position. For example, the cleaning position is identical to the intensive cleaning position of the nozzle bar 04. In an exemplary, alternative embodiment, the cleaning position of the nozzle bar 04 differs from its intensive cleaning position.

In the first maintenance position, the cleaning position, the at least one nozzle bar 04 is preferably in operative connection with at least one cleaning device 18. The at least one nozzle bar 04 is preferably arranged in the at least one first maintenance position when there is contact with the at least one cleaning device 18. The first maintenance position, the cleaning position, preferably corresponds to a positioning of the nozzle bar 04 during contactless cleaning of the at least one exit surface 09 of the at least one print head 08 of the nozzle bar 04 concerned at least one print head 08, preferably the at least one exit surface 09 of the at least one print head 08, the at least one nozzle bar 04, preferably cleaning by means of the at least one cleaning device 18. The first maintenance position preferably corresponds to a positioning of the at least one nozzle bar 04 during contactless cleaning of the at least one print head 08, preferably the at least one exit surface 09 of the at least one print head 08, more preferably the at least two print heads 08, more preferably the at least one row of D The at least one nozzle bar 04 is preferably positioned during the contactless cleaning of the at least one print head 08, preferably the at least one exit surface 09 of the at least one print head 08, of the at least one nozzle bar 04 in the first maintenance position. The contact of the at least one print head 08 with the at least one cleaning device 18 preferably corresponds to an indirect contact. Preferably additionally or alternatively, the contact of the at least one print head 08 with the at least one cleaning device 18 preferably corresponds to a contactless cleaning of the at least one print head 08, preferably the at least one exit surface 09 of the at least one print head 08.

In the second maintenance position, the intensive cleaning position, the at least one nozzle bar 04 is preferably in operative connection with at least one cleaning device 61, preferably with at least one contact element 64 of the at least one cleaning device 61 Nozzle bar 04 arranged in the at least one second maintenance position upon contact with the at least one cleaning device 61. The second maintenance position, the intensive cleaning position, preferably corresponds to a positioning of the nozzle bar 04 while at least one of the print heads 08 of this nozzle bar 04 is in direct contact with the at least one contact element 64 of the at least one cleaning device 61. The distance of the at least one print head 08 of the nozzle bar 04 arranged in the second maintenance position from the transport path of printing material 03 is preferably greater than in the printing position. The at least one nozzle bar 04 is preferably positioned in the second maintenance position upon contact with the at least one cleaning device 61.

In the third maintenance position, the at least one nozzle bar 04 preferably comes into contact with at least one sealing element 56 and / or with the at least one cleaning device 18, for example preferably when the cleaning device 18 comprises the at least one sealing element 56. The third maintenance position, the depot position, preferably corresponds to a positioning of the at least one nozzle bar 04 in direct contact with the at least one sealing element 56. The at least one sealing element 56 is preferably arranged in the third maintenance position in direct contact with the at least one nozzle bar 04. The at least one sealing element 56 is preferably the at least one exit surface 09 of the at least one print head 08 of the nozzle bar 04, preferably the at least two exit surfaces 09 of at least two print heads 08, preferably arranged next to one another in the y-direction and / or transverse direction A, more preferably at least four exit surfaces 09 of at least four printheads 08 arranged next to one another in the y-direction and / or transverse direction A, more preferably of all printheads 08 arranged next to one another in the y-direction and / or transverse direction A, preferably designed to be at least partially sealing against external influences, preferably when the nozzle bar is located 04 is in the depot position. In the foregoing and in the following, an operative connection preferably describes that a first element is at least indirectly or directly connected to a second element and / or is designed to act together with the second element. For example, an operative connection is also to be understood as meaning that the first element is designed to act as a function of the design and / or arrangement and / or a movement and / or a process of the second element.

A distance of the at least one print head 08 of the nozzle bar 04 arranged in the at least one maintenance position, preferably in all maintenance positions, from a transport path of printing material 03 is preferably greater than in the printing position. In the first maintenance position, the cleaning position, the at least one nozzle bar 04 is preferably at a first distance from the transport path. In the second maintenance position, the intensive cleaning position, the at least one nozzle bar 04 preferably has a second distance, which is furthermore preferably different from the first distance, from the transport path. The distance from the second maintenance position of the nozzle bar 04, in particular the at least one exit surface 09 of the at least one print head 08 of the nozzle bar 04, to the transport path is preferably less than in the first maintenance position. In the third maintenance position, the depot position, the at least one nozzle bar 04 preferably has a third distance from the transport path, which preferably differs from the first distance. For example, the third distance, that is the distance between the nozzle bar 04 arranged in the depot position, and the transport path is less than the first distance, that is, the distance between the nozzle bar 04 arranged in the cleaning position. Preferably, the third distance between the at least one nozzle bar 04 is in the third Maintenance position to the transport path of printing substrate 03 is a distance different from the first distance of the at least one nozzle bar 04 in the first maintenance position. The third distance is preferably smaller than the first distance. The third distance of the at least one print head 08 is preferably of the nozzle bar 04 arranged in the at least one third maintenance position of the transport path of printing substrate 03 is greater than in the printing position.

The cleaning direction G is preferably a horizontal direction G, in which a cleaning unit 26 and / or at least one cleaning element 31 and / or at least one removal unit 63, in particular in each case for performing a cleaning step, is arranged to be movable and / or is designed to be movable. The cleaning device 18 preferably comprises the at least one cleaning unit 26 and the at least one cleaning element 31. The cleaning device 61 preferably comprises the at least one removal unit 63. The cleaning direction G preferably has at least one component that is parallel to the transverse direction A and / or parallel to the is arranged y-direction and is preferably oriented opposite to the y-direction. More preferably, the cleaning direction G is arranged parallel to the transverse direction A and / or parallel to the y-direction and is preferably oriented opposite to the y-direction. The cleaning direction G is preferably oriented orthogonally to at least the transport direction T provided for a transport of at least one printing material 03 and / or orthogonally to the x direction. The cleaning direction G is preferably that direction in which an element cleaning the at least one print head 08 passes this at least one print head 08. The cleaning direction G preferably corresponds to a direction of the longest side of the at least one nozzle bar 04.

The at least one cleaning unit 26 and more preferably at least one cleaning element 31 is preferably arranged to be movable and / or moving in and / or counter to the cleaning direction G. The at least one cleaning unit 26 and more preferably the at least one cleaning element 31 are preferably arranged to be movable at least in the cleaning direction G during a cleaning process of the at least one exit surface 09 of the at least one print head 08. Preferably, additionally or alternatively, the at least one removal unit 63 is arranged to be movable and / or moving in and / or against the cleaning direction G, in particular during a cleaning process of the at least one exit surface 09 of the at least one print head 08.

The at least one printing unit 01 preferably comprises the at least one cleaning device 18. The at least one cleaning device 18 preferably comprises at least one cleaning element 31 with at least one fluid supply 38 designed as a fluid supply opening 38. The at least one cleaning device 18 with the at least one print head 08 is preferably additionally or alternatively at least ejected via at least one cleaning fluid through the at least one fluid supply opening 38 so as to come into indirect contact at least at times. Preferably, additionally or alternatively, the at least one cleaning device 18 with the at least one print head 08 is ejected via at least one cleaning fluid through the at least one fluid supply opening 38 in indirect contact, i.e. preferably designed to clean it without contact, and / or comes into indirect contact. The at least one cleaning device 18 preferably comes into indirect contact with the at least one print head 08 at least via at least one cleaning fluid ejected through the at least one fluid supply opening 38. The indirect contact of the at least one cleaning device 18 with the at least one print head 08 and / or with the at least one nozzle bar 04 thus preferably describes that the at least one cleaning device 18, preferably the at least one cleaning element 31, preferably permanently, at least for the duration of the cleaning , to which at least one exit surface 09 is at a distance greater than zero. The at least one cleaning device 18, preferably the at least one cleaning element 31, the at least one print head 08 of the at least one nozzle bar 04, preferably at least the at least one exit surface 09, is designed to clean contactlessly in the indirect contact. The at least one cleaning device 18 is preferably the at least one print head 08, preferably the at least one exit surface 09 of the at least one print head 08, more preferably at least two exit surfaces 09 of at least two print heads 08, furthermore preferably at least the exit surfaces 09 of all print heads 08 in a row, designed to clean in a contactless manner. The printing assembly 01 preferably has at least four cleaning devices 18. Preferably, one cleaning device 18 is designed to clean and / or clean one nozzle bar 04, preferably the at least four nozzle bars 04.

The at least one cleaning device 18 preferably has at least one guide system 19. The at least one guide system 19 preferably comprises at least one guide element 53. The at least one cleaning device 18 is preferably designed to be movable and / or movable along the at least one guide element 53 and / or is moved, preferably in particular moved in a straight line. The at least one cleaning device 18 is preferably arranged so as to be linearly movable and / or moving via the at least one guide system 19, preferably by means of at least one cleaning drive 21.

The at least one guide element 53 of the at least one guide system 19 is preferably designed as a beam and / or rod and / or rail and / or linear guide. At least one guide element 53 of the at least one guide system 19 is preferably arranged in front of and in each case at least one guide element 53 of the at least one guide system 19 after the at least one nozzle bar 04 in the transverse direction A and / or in the y direction. For example, in each case at least one guide element 53 of the at least one guide system 19 is arranged on a housing of the at least one printing unit 01 in the transverse direction A before and after the at least one nozzle bar 04.

The at least one guide element 53 of the at least one guide system 19 preferably has its longitudinal direction along its longest extent. The longitudinal direction of the at least one guide element 53 is preferably arranged in the plane spanned by the x-direction and the z-direction. For example, the The longitudinal direction of the at least one guide element 53 is arranged in a plane whose normal vector corresponds to the transverse direction A and / or the y direction. The longitudinal direction of the at least one guide element 53 preferably has at least one first component in the x direction, preferably a horizontal component, and at least one second component in the z direction, preferably a vertical component. The component of the longitudinal direction in the x direction is preferably greater than the component of the longitudinal direction in the z direction. The longitudinal direction of the at least one guide element 53 of the at least one guide system 19 thus preferably has a larger horizontal component than its vertical component.

The at least one guide element 53 preferably has at least one guide path. The guide path is preferably designed to guide the at least one cleaning device 18. The at least one cleaning device 18 is preferably moved along the guide path of the at least one guide element 53. The guide path along the at least one guide element 53 is preferably parallel to the longitudinal direction of the at least one guide element 53. The guide path along the at least one guide element 53 is preferably arranged in a plane whose normal vector corresponds to the transverse direction A and / or the y-direction. The guide path along the at least one guide element 53 preferably has a larger horizontal component within the plane than its vertical component. The at least one cleaning device 18 is preferably moved along the at least one guide element 53 along the guide path in a plane with a larger horizontal component than a vertical component.

The at least one guide system 19 preferably has at least one cross member 54, which is preferably designed as a fastening 54. The traverse 54 is preferably designed as a mechanical carrier. The at least one cleaning device 18 is preferably connected, preferably in a form-fitting manner, to the at least one cross member 54 tied together. The at least one cleaning device 18 and the at least one cross member 54 are preferably designed to be movable and / or movable together along the at least one guide element 53 of the at least one guide system 19, in particular moving linearly or in a straight line. The at least one cleaning device 18 is preferably connected to the at least one guide element 53 of the at least one guide system 19 via the at least one cross member 54, preferably designed as a fastening 54, of the at least one guide system 19. The at least one cleaning device 18 is preferably via at least one first cross member 54 in the transverse direction A and / or in the y direction in front of the at least one nozzle bar 04 and via at least one second cross member 54 in the transverse direction A and / or in the y direction after the at least one Nozzle bar 04 each connected to the at least one guide element 53. Preferably, at least one guide element 53 is arranged in front of and at least one guide element 53 in cross direction A in the transverse direction A after the at least one nozzle bar 04.

The at least one cleaning device 18 preferably has a distance from the at least one guide element 53 of the at least one guide system 19 which is preferably constant and / or is and / or is fixed by the at least one cross member 54 of the at least one guide system 19. The at least one first maintenance position, the cleaning position, and / or the at least one third maintenance position, the depot position, of the at least one nozzle bar 04 and / or on the preferably constant distance between the at least one cleaning device 18 and the at least one guide element 53 is preferably defined constant spacing matched.

The at least one printing assembly 01 preferably has at least two, more preferably at least four, cleaning devices 18. At least two nozzle bars 04, preferably at least two nozzle bars 04 of the at least four nozzle bars 04, are preferably each with at least one cleaning device 18, preferably each with at least one cleaning device 18 of the at least two cleaning devices 18, designed to come into contact and / or come into contact. A printing unit 01 preferably comprises at least one cleaning device 18 per nozzle bar 04. At least two cleaning devices 18 preferably have at least one common guide system 19. In particular, preferably at least two cleaning devices 18 are connected to the at least one, preferably common, guide system 19 and / or are designed to be movable and / or moving and / or are moved by the at least one preferably common guide system 19. The at least two cleaning devices 18 preferably have at least one common guide element 53, in particular a guide element 53 designed as a rail. The at least one common guide system 19 for the at least two cleaning devices 18 preferably has the at least one common guide element 53, preferably at least one common guide element 53 in the transverse direction A in front of and / or at least one common guide element 53 in the transverse direction A after the at least one nozzle bar 04 . The at least two cleaning devices 18 are preferably connected to the at least one cross member 54 and / or the at least two cleaning devices 18 and the at least one cross member 54 are designed to be movable and / or movable together, in particular linear, along the at least one guide element 53 of the at least one guide system 19 moving. The at least two cleaning devices 18 are preferably jointly connected to the at least one guide system 19 and / or formed and / or moved together from the at least one use position to the at least one storage position or vice versa through the at least one guide system 19. The at least two cleaning devices 18 are preferably jointly connected to the at least one guide system 19 and / or the at least two cleaning devices 18 preferably have the at least one storage position or the at least one use position at the same time. The at least two cleaning devices 18 preferably have at least two common guide systems 19. In each case at least one of the at least two guide systems 19 is preferably arranged in transverse direction A and / or in y-direction in front of the at least one nozzle bar 04 and / or at least one of the at least two guide systems 19 is preferably in transverse direction A and / or in y-direction arranged after the at least one nozzle bar 04.

The at least two cleaning devices 18 preferably have an angle of inclination with respect to the z direction, which corresponds to an inclination with respect to the z direction of the nozzle bar 04 and / or the at least one print head 08 of the nozzle bar 04. The inclination preferably corresponds to the inclination of the associated nozzle bar 04 and / or its print head 08 z-direction of the nozzle bar 04 and / or of the at least one print head 08 of the nozzle bar 04 corresponds. For example, the at least two cleaning devices 18, which have the at least one common guide element 53, have a different angle of inclination with respect to the z-direction. For example, the inclination of the at least two cleaning devices 18 to one another is at an angle of at least 1 ° (one degree), preferably of at least 3 ° (three degrees), more preferably of 4 ° (four degrees). The angle of inclination with respect to the z-direction of the respective cleaning device 18 preferably corresponds to an inclination with respect to the z-direction of the nozzle bar 04 and / or the print heads 08 to which the nozzle bar 04 or print heads 08 this cleaning device 18 is assigned.

The at least one cleaning device 18 preferably has at least one storage position and at least one use position. Preferably, the at least one cleaning device 18 which has at least one storage position.

The at least one storage position of the at least one cleaning device 18 is preferably a position in which the at least one cleaning device 18 is outside the area between the at least one nozzle bar 04 and the transport path of the at least one printing substrate 03, for example determined by the at least one printing substrate guide element opposite the nozzle bar 04 02, is arranged. The at least one storage position is preferably arranged outside the area between the at least one nozzle bar 04 and the transport path of the at least one printing substrate 03. In particular, the storage position of the at least one cleaning device 18 corresponds to a storage position when the printing press is in an operating state in which the at least one cleaning device 18 is not used.

The at least one cleaning device 18 is furthermore preferably arranged in the at least one storage position along the x direction in front of or after the at least one nozzle bar 04. The at least one cleaning device 18 is preferably in its storage position in a circumferential direction of the at least one printing substrate guide element 02 opposite and / or assigned to the at least one nozzle bar 04 and / or along the transport path of printing substrate 03 before or after the at least one nozzle bar 04 is arranged and / or is being arranged arranged. The at least one cleaning device 18 is preferably arranged and / or is arranged in the at least one storage position along the transport direction T of printing substrate 03 before or after the at least one nozzle bar 04, with the transport direction T at the position of the transport path for printing substrate 03 below the at least one Nozzle bar 04 is determined and / or is. The at least one cleaning device 18 is preferably arranged in the at least one storage position along the transport direction T of printing substrate 03 before or after an area between the at least one nozzle bar 04 and the transport path of printing substrate 03 and / or is arranged, the transport direction T being and / or being determined at the position of the transport path of printing substrate 03 below the at least one nozzle bar 04. The storage position preferably corresponds to a position along the at least one guide element 53 of the at least one guide system 19, in particular along its longitudinal direction, outside the area between the at least one nozzle bar 04 and the transport path of the printing substrate 03. The arrangement preferably corresponds to before or after the at least one nozzle bar 04 of an arrangement before or after the area, which is a spatial area and which is defined by outer edges of the at least one nozzle bar 04, which preferably extend in the z-direction, i.e. preferably vertically, the outer edges being projected up to the transport path. The outer edges preferably correspond to the outwardly directed sides of a housing of the at least one nozzle bar 04, which are preferably perpendicular to the plane of the x-direction with the y-direction. In the storage position, the at least one cleaning device 18 is preferably arranged at a distance greater than zero from the outer edges of the at least one nozzle bar 04 in the x direction. The at least one fluid supply opening 38 of the at least one cleaning element 31 of the at least one cleaning device 18 arranged in the storage position, preferably at least one center of area of a boundary of the fluid supply opening 38, preferably has a first opening to the at least one opening of the at least one exit surface 09 of the at least one print head 08 preferably a relative distance at and / or is arranged at the relative distance, preferably a distance in the x-direction and / or in the transport direction T. The preferably relative distance of the at least one fluid supply opening 38 of the at least one cleaning element 31 of the at least one in the storage position is preferred arranged cleaning device 18, preferably the center of area of the boundary of the fluid supply opening 38, to the at least one opening of the at least one exit surface 09 of the at least one print head 08 at least twice, preferably at least two point f five times, more preferably at least three times, more preferably at least five times, as large as an extension of the at least one cleaning device 18 in the transport direction T. Preferably, the transport direction T is determined at the position of the transport path with the shortest distance to the at least one exit surface 09 of the at least one print head 08 of the at least one nozzle bar 04 to be cleaned by the at least one cleaning device 18. The relative distance in the storage position is preferably at least so great that contact of the at least one nozzle bar 04 with the at least one cleaning device 18 when it is arranged in the printing position is avoided. The arrangement of the storage position preferably enables a compact design of the at least one printing assembly 01. The at least one cleaning device 18 is preferably easy to handle. Maintenance of the at least one cleaning device 18 and / or removal of the at least one cleaning device 18 is preferably carried out in the storage position.

The at least one cleaning device 18 preferably has the at least one use position.

The at least one use position of the at least one cleaning device 18 is preferably a position in which the at least one cleaning device 18 is within the area between the at least one nozzle bar 04 and the transport path of the at least one printing substrate 03, for example determined by the at least one printing substrate guide element opposite the nozzle bar 04 02, is arranged. The at least one use position is preferably arranged within the area between the at least one nozzle bar 04 and the transport path of the at least one printing material 03. The at least one cleaning device 18 is preferably arranged in the at least one use position within the area between the at least one nozzle bar 04 and the transport path of printing substrate 03. In particular, the use position of the at least one cleaning device 18 corresponds to a position if the printing press is in an operating state in which the at least one cleaning device 18 is used. The use position of the at least one cleaning device 18 preferably corresponds to a position in which the cleaning device 18 is in direct or indirect contact with at least one, in particular, one to be cleaned print head 08 of the relevant nozzle bar 04, and / or preferably a position in which the cleaning device 18 is to be carried out the cleaning of the at least one print head 08 of the relevant nozzle bar 04 is arranged. In the use position, the at least one cleaning device 18 is preferably at least partially in the area between the at least one nozzle bar 04 and the transport path, in particular between the shortest connection of the at least one nozzle bar 04 to the transport path, the transport path for example through the at least one nozzle bar 04 assigned printing substrate guide element 02 is set, arranged. The at least one fluid supply opening 38 of the at least one cleaning element 31 of the at least one cleaning device 18 arranged in the position of use, preferably the center of area of the boundary of the fluid supply opening 38, preferably has a second, preferably second, to the at least one opening of the at least one exit surface 09 of the at least one print head 08 relative distance at and / or is arranged at the relative distance, preferably a distance in the x direction and / or in the transport direction T. The preferably relative distance of the at least one fluid supply opening 38 of the at least one cleaning element 31 of the at least one cleaning device 18 is preferred the centroid of the boundary of the fluid supply opening 38, to the at least one opening of the at least one exit surface 09 of the at least one print head 08 is larger in the storage position than in the use position. The preferably relative distance of the at least one fluid supply opening 38 of the at least one cleaning element 31 of the at least one cleaning device 18 arranged in the position of use, preferably the center of area of the boundary of the fluid supply opening 38, to the at least one opening of the at least an exit surface 09 of the at least one print head 08 a maximum of once, preferably a maximum of zero point five times, as large as the extent of the at least one cleaning device 18 in the transport direction T. The transport direction T is preferably at the position of the transport path with the shortest distance to the at least an exit surface 09 of the at least one print head 08 of the at least one nozzle bar 04 to be cleaned by the at least one cleaning device 18 is determined.

The at least one cleaning device 18 is preferably arranged in the at least one use position within the area between the at least one nozzle bar 04 and the transport path of the at least one printing substrate 03. Preferably, additionally or alternatively, the at least one cleaning device 18 is preferably arranged in the at least one storage position along the x direction in front of or after the at least one nozzle bar 04.

The execution of the storage position and / or the execution of the use position preferably increases the compactness of the printing press. A lateral movement, for example in the y direction, of the at least one nozzle bar from the printing position into the at least one maintenance position is preferably superfluous.

Preferably, the area between the at least one nozzle bar 04 and the transport path of the printing substrate 03 describes above and below the spatial area which comprises the shortest distance between the nozzle bar 04, in particular the at least one print head 08 of the nozzle bar 04, and the transport path. The area between the at least one nozzle bar 04 and the transport path of printing substrate 03 in the preceding and in the following is the spatial area which is the shortest distance between the nozzle bar 04, in particular the at least one print head 08 of the nozzle bar 04, more preferably the at least one exit surface 09 of the at least one print head 08 of the at least one nozzle bar 04 and the transport path.

The shortest distance of the area between the at least one nozzle bar 04 and the transport path of the printing material 03 is preferably directed in the z-direction, preferably vertically. The spatial area, i.e. preferably the area between the at least one nozzle bar 04 and the transport path of printing substrate 03, is preferably delimited by outer edges of the at least one nozzle bar 04 extending preferably in the z direction, i.e. preferably vertically, the outer edges projecting up to the transport path will. The outer edges preferably correspond to the outwardly directed sides of a housing of the at least one nozzle bar 04, which are preferably perpendicular to the plane of the x-direction with the y-direction. Preferably, the at least one nozzle bar 04 is delimited in the transport direction T of the printing substrate 03, preferably leading and trailing, by a delimitation plane, preferably by a delimitation plane of at least two delimitation planes, with the transport direction T preferably at the point of the transport path with the shortest distance for which at least one exit surface 09 of the at least one print head 08 of the at least one nozzle bar 04 is determined. The at least one delimitation plane, preferably at least two delimitation planes, is preferably perpendicular to a plane, the at least one exit surface 09 being arranged in the plane. The at least two delimitation planes are preferably perpendicular to the plane which has the at least one exit surface 09, preferably the at least one exit surface 09 of the at least one print head 08 of the at least one nozzle bar 04 of the at least four nozzle bars 04. Preferably, one delimitation plane of the at least two delimitation planes delimits the at least one nozzle bar 04 leading in the transport direction T and one delimitation plane of the at least two delimitation planes delimits the at least one nozzle bar 04 following in the transport direction T. The area between the at least one nozzle bar 04 and the transport path of printing substrate 03 preferably describes a spatial area within the at least two delimitation planes. Is preferred the at least one cleaning device 18 or the at least one cleaning device 61 is formed within the area between the at least one nozzle bar 04 and the transport path of printing substrate 03 in operative connection with the at least one nozzle bar 04, for example designed to clean it. An element which is arranged within the area between the at least one nozzle bar 04 and the transport path of printing substrate 03 is preferably in operative connection with the at least one nozzle bar 04.

For example, the at least one print head 08 of a nozzle bar 04 arranged in the first maintenance position, the cleaning position, is assigned a cleaning device 18 which is positioned in the use position via the at least one guide system 19. The at least one cleaning device 18 is preferably designed to be movable and / or moving, in particular as a whole, at least orthogonally to the transverse direction A, preferably via the at least one guide system 19. Preferably, in the at least one first maintenance position of the at least one nozzle bar 04, at least one exit surface 09 of at least one print head 08, in particular one exit surface 09 of at least two, preferably at least three and more preferably of at least four print heads 08, at least one is in the use position arranged cleaning device 18 assigned and / or assignable and / or arranged opposite one another.

The at least one cleaning device 18 is preferably designed to be transferable and / or moving from the storage position to the use position or vice versa by the at least one guide system 19, in particular along the at least one guide element 53. The at least one cleaning device 18 is preferably designed to move in a straight line or linearly along the at least one guide element 53. The at least one cleaning device 18 is preferably along the at least one guide element 53 of the at least one Guide system 19 is designed to move and / or move from the at least one storage position into the at least one use position or vice versa and / or is moved. The at least one storage position and the at least one use position are preferably arranged along the at least one guide element 53. The at least one storage position and the at least one use position are preferably spaced apart from one another by a distance greater than zero.

In the first or third maintenance position, the cleaning position or the depot position, of the at least one nozzle bar 04, the cleaning device 18 assigned to and / or opposite the corresponding nozzle bar 04 is preferably designed as at least one locking element, for example in the form of at least one maintenance stop. The nozzle bar 04 having the at least one printhead 08 is preferably pulled and / or pressed against the at least one cleaning device 18 in its first or third maintenance position by applying a force and / or, for example, by gravity. As a result, the first or third maintenance position of the at least one nozzle bar 04 is preferably clearly defined.

The at least one nozzle bar 04 is preferably arranged in the first maintenance position, the cleaning position, when the at least one cleaning device 18 is arranged in the at least one use position and when at least one cleaning element 31 is arranged in an operational position. The at least one nozzle bar 04 is preferably arranged in the third maintenance position, the depot position, when the at least one cleaning device 18 is arranged in the at least one use position and when the at least one cleaning element 31 is arranged in a storage position. Preferably, alternatively, the at least one nozzle bar 04 is arranged in the rest position when the at least one cleaning device 18 is arranged in the at least one use position and when the at least one cleaning element 31 is arranged in the storage position. The at least one cleaning device 18 preferably has at least one cleaning unit 26, more preferably the at least one cleaning element 31. The at least one cleaning device 18 preferably has at least one cross member 22, which is preferably designed as a collecting trough 22. The traverse 22 is preferably a mechanical carrier.

The at least one collecting trough 22 preferably has its longitudinal direction along its longest extent. The longitudinal direction of the at least one collecting trough 22 is preferably aligned parallel to the at least one nozzle bar 04. Preferably, the collecting trough 22 has its longest extension in the y-direction. The at least one collecting trough 22 preferably extends over the entire extent of the at least one nozzle bar 04 in the transverse direction A. The at least one collecting trough 22 is preferably in the transverse direction A before and after the at least one nozzle bar 04 with the at least one cross member 54 of the at least one guide system 19 connected and / or attached to it. The at least one collecting trough 22 is preferably designed as a collecting container for liquid or dirt. The at least one collecting trough 22 preferably has at least one U-profile.

The at least one cleaning unit 26 and preferably the at least one cleaning element 31 is designed to be movable and / or movable along the longitudinal direction of the at least one collecting trough 22, preferably along a cleaning guide 44. The at least one cleaning unit 26 and preferably the at least one cleaning element 31 is preferably designed to be movable and / or movable in or against the transverse direction A and / or the y direction.

For example, especially if the at least one nozzle bar 04 comprises at least two rows of print heads 08 preferably arranged next to one another in the y-direction, there are at least two cleaning elements 31, preferably exactly as many Cleaning elements 31 such as existing rows of print heads 08, assigned to at least one collecting pan 22 and / or arranged on or in the at least one collecting pan 22.

The at least one cleaning element 31 preferably has the at least one storage position.

The at least one storage position of the at least one cleaning element 31 is preferably a position of the at least one cleaning element 31 when this is not in operative connection with the at least one nozzle bar 04. The at least one storage position of the at least one cleaning element 31 preferably corresponds to a storage position when the printing press is in an operating state in which the at least one cleaning element 31 is not used.

The at least one cleaning element 31 is preferably arranged and / or is arranged in the at least one storage position outside the area between the at least one nozzle bar 04 and the transport path of the printing substrate 03, for example determined by the at least one printing substrate guide element 02 opposite the nozzle bar 04. The at least one cleaning element 31 is preferably in the at least one storage position, preferably along the y direction and / or along the transverse direction A and / or along the longest edge of the at least one nozzle bar 04, outside the area between the at least one nozzle bar 04 and the Transport path of the printing substrate 03 is arranged. The at least one cleaning element 31 is preferably in the at least one storage position, preferably along the y-direction and / or along the transverse direction A and / or along the longest side of the at least one nozzle bar 04, outside the area between the at least one nozzle bar 04 and the Transport path of the printing material 03 is arranged and / or is arranged. Preferably corresponds to Storage position of the at least one cleaning element 31 in a position along the at least one collecting trough 22, in particular along its longitudinal direction, outside the area between the at least one nozzle bar 04 and the transport path of the printing substrate 03 Cleaning element 31, preferably of the at least one cleaning device 18 arranged in the use position, more preferably the center of gravity of the boundary of the fluid supply opening 38, to which at least one opening of the at least one exit surface 09 of the at least one print head 08 a preferably third preferably relative distance is and / or arranged at the relative distance, preferably a distance in the y direction and / or in the transverse direction A. The preferably relative distance of the at least one fluid supply opening 38 of the at least one in the storage position is preferred on arranged cleaning element 31, preferably the center of area of the boundary of the fluid supply opening 38, to the at least one opening of the at least one exit surface 09 of the at least one print head 08 at least twice, preferably at least two point five times, more preferably at least three times, more preferably at least five times, see above as large as an extension in the transverse direction A of the at least one exit surface 09 of the at least one print head 08 of the at least one nozzle bar 04 to be cleaned by the at least one cleaning device 18 a nozzle bar 04 determines which print head 08 is arranged closest to the supply position.

The at least one cleaning element 31 is preferably designed to be movable and / or moving along the y direction and / or along the transverse direction A from the area between the at least one nozzle bar 04 and the transport path of the printing substrate 03 in order to reach the at least one storage position . The at least one cleaning element 31 is preferably in the at least one Storage position in standstill.

The at least one cleaning element 31 preferably has at least one insert position. The at least one cleaning device 18 is preferably arranged in its use position when the at least one cleaning element 31 is arranged in its use position.

The at least one cleaning element 31 is preferably arranged in the at least one operating position of the printing machine in at least one cleaning operating state, in particular when the at least one cleaning element 31 is designed to clean the at least one nozzle bar 04. The at least one insert position of the at least one cleaning element 31 is preferably a position within the area between the at least one nozzle bar 04 and the transport path of the printing substrate 03, for example determined by the at least one printing substrate guide element 02 opposite the nozzle bar 04 at least one collecting trough 22, in particular along its longitudinal direction, within the area between the at least one nozzle bar 04 and the transport path of the printing substrate 03. The at least one print head 08, preferably the at least one exit surface 09 of the at least one print head 08, of the at least one nozzle bar 04, preferably the at least one nozzle bar 04 of the at least four nozzle bars 04 is preferably cleaned in a contactless manner by the at least one cleaning device 18. The at least one print head 08, preferably the at least one exit surface 09 of the at least one print head 08, the at least one nozzle bar 04, preferably the at least one nozzle bar 04 of the at least four nozzle bars 04, is preferably through the at least one cleaning device 18 with the at least one in the Cleaning element 31 arranged in the use position with the at least one fluid supply opening 38 cleaned in a contactless manner. The at least cleaning element 31 is preferably in the use position within the area between the at least one Nozzle bar 04 and the transport path of printing substrate 03 are arranged. The at least one fluid supply opening 38 of the at least one cleaning element 31 arranged in the use position, preferably of the at least one cleaning device 18 arranged in the use position, more preferably the area of the boundary of the fluid supply opening 38, faces the at least one opening of the at least one exit surface 09 of the at least a print head 08 a preferably fourth preferably relative distance and / or is arranged in the relative distance, preferably a distance in the y-direction and / or in the transverse direction A. The preferably relative distance of the at least one fluid supply opening 38 of the at least one in the Cleaning element 31 arranged in the operating position, preferably the center of gravity of the boundary of the fluid supply opening 38, to the at least one opening of the at least one exit surface 09 of the at least one print head 08 a maximum of once, preferably a maximum of zero point five m al, as large as an extension in transverse direction A of the at least one exit surface 09 of the at least one print head 08 of the at least one nozzle bar 04 to be cleaned by the at least one cleaning device 18. The relative distance in the use position is preferably smaller than in the storage position.

The at least one cleaning element 31 is preferably designed to be movable and / or moving along the y-direction and / or along the transverse direction A in the area between the at least one nozzle bar 04 and the transport path of the printing substrate 03 in order to reach the at least one operating position . The at least one cleaning element 31 is preferably in motion in the at least one insert position with respect to the cleaning direction G.

The at least one cleaning element 31 is preferably arranged in the at least one insert position when it is in operative connection with the at least one nozzle bar 04. The at least one cleaning device 18 preferably enters at least temporarily in operative connection with the at least one nozzle bar 04, preferably when the at least one nozzle bar 04 is arranged in the first maintenance position, the cleaning position, and the at least one cleaning element 31 is arranged in the use position. Preferably, the at least one cleaning device 18, in particular at least two, preferably all, cleaning elements 31 of the cleaning device 18 arranged in the operating position are in operative connection with at least two, preferably all, nozzle bars 04, which nozzle bars 04 are preferably arranged in the first maintenance position at the same time . Further nozzle bars 04 of the printing unit 01 are preferred, which should not come into operative connection with the at least one cleaning device 18, while preferably at least one nozzle bar 04 is in operative connection with the at least one cleaning element 31 of the at least one cleaning device 18, preferably at this point in time in the rest position or the depot position.

The at least one cleaning device 18 preferably has the at least one storage position and the at least one use position. The at least one cleaning device 18 is preferably moved by the at least one guide system 19 from the at least one storage position into the at least one use position or vice versa. The at least one cleaning device 18, preferably the at least two cleaning devices 18, is preferably in the at least one storage position along the at least one guide element 53, in particular the storage position arranged outside the area between the at least one nozzle bar 04 and the transport path of the at least one printing substrate 03 the at least one use position, in particular a use position arranged within the area between the at least one nozzle bar 04 and the transport path of at least one printing substrate 03, or vice versa, is designed to be movable and / or movable. The at least one cleaning device 18 is preferably moved along the at least one guide element 53 of the at least one guide system 19 from the at least one storage position into the at least one Use position or vice versa, preferably moved along a direction along the shortest side of the at least one nozzle bar 04, preferably moved linearly. The at least one cleaning device 18 preferably comprises at least one drive. The at least one drive of the at least one cleaning device 18 is preferably designed to drive the movement of the at least one cleaning device 18 from the storage position into the use position or vice versa.

The at least one cleaning element 31 preferably has the at least one storage position and the at least one use position. The at least one cleaning element 31 is preferably moved from the at least one storage position into the at least one use position or vice versa. The at least one cleaning element 31 is preferably moved in its at least one operating position in the area between the at least one nozzle bar 04 and the transport path of the at least one printing substrate 03 in or against the cleaning direction G.

The at least one cleaning device 18 preferably cleans the at least one print head 08. The at least one cleaning device 18 preferably cleans the at least one print head 08 at least temporarily a cleaning element 31 is cleaned.

The printing press, preferably the at least one printing assembly 01, preferably comprises at least one cleaning device 61. The at least one cleaning device 61 preferably comprises at least one removal unit 63. The at least one removal unit 63 preferably comprises at least one contact element 64.

At least one removal unit 63 is preferably assigned to a nozzle bar 04 of the at least one printing unit 01 and / or is at least temporarily in operative connection with at least one nozzle bar 04. The at least one is preferred Cleaning device 61 is designed to come into direct contact at least temporarily with the at least one print head 08 at least via the at least one contact element 64. The at least one cleaning device 61 is preferably designed to come into direct contact with the at least one print head 08 at least via the at least one contact element 64 and / or comes into direct contact. The at least one cleaning device 61 further preferably comprises at least two removal units 63. One removal unit 63 is preferably designed to come into contact with at least one row of the print heads 08 and / or preferably all of the removal units 63 come into contact with one row of the print heads 08 at the same time educated. One removal unit 63 in each case preferably comes into contact with at least one row of the print heads 08 and / or preferably all of the removal units 63 come into contact with a respective row of the print heads 08 at the same time. The at least one cleaning device 61 preferably comes into direct contact with the at least one print head 08 at least via the at least one contact element 64. The at least one printing assembly 01 preferably has the at least one cleaning device 61 with at least two removal units 63. At least two nozzle bars 04, preferably at least two nozzle bars 04 of the at least four nozzle bars 04, are preferably designed to come into contact with at least one distance unit 63 and / or come into contact.

The at least one cleaning device 61 preferably has at least one guide element 62. The at least one cleaning device 61 preferably comprises at least two guide elements 62, more preferably exactly two guide elements 62. The at least one removal unit 63 is preferably moving along the at least one guide element 62 along the longest edge of the at least one nozzle bar 04 and / or along the y-direction and / or designed to be movable. The at least one removal unit 63 is preferably along the at least one guide element 62 along the longest side of the at least one nozzle bar 04 and / or designed to be movable and / or movable along the y-direction and / or is moved. The at least one removal unit 63 is preferably arranged along the at least one guide element 62 along a longest side of the at least one nozzle bar 04 and / or along the y-direction in at least one storage position or in at least one use position. The storage position and the insert position are preferably spaced apart from one another by a distance greater than zero. The at least one guide element 62 is preferably designed as a beam and / or rod and / or rail and / or linear guide. A longest extension of the at least one guide element 62, preferably its longitudinal direction, preferably extends in the y-direction and / or in the transverse direction A, i.e. parallel to a longest extension of the at least one nozzle bar 04. The at least one guide element 62 preferably enables a fast and safe Guiding the at least one removal unit 63. The risk of at least one removal unit 63 tilting and, for example, damage to the at least one exit surface as a result, is preferably minimized.

At least one of the guide elements 62 is preferably arranged in front of and in each case at least one of the guide elements 62 after the at least one nozzle bar 04 in the x direction, that is preferably along the transport path of the printing substrate 03. At least one guide element 62, preferably exactly one guide element 62, is preferably arranged in the x direction, i.e. preferably along the transport path of the printing substrate 03, in front of a first nozzle bar 04 of the printing unit 01 and after a last nozzle bar 04 of the printing unit 01. For example, if the at least one printing material guide element 02 opposite the at least one nozzle bar 04 is designed as a cylinder or roller, at least one of the guide elements 62 is in each case along the circumference of the at least one printing material guide element 02 in front of the at least one nozzle bar 04 and at least one of the guide elements 62 in each case of the circumference of the at least one printing substrate guide element 02 arranged after the at least one nozzle bar 04. The at least one removal unit 63 is preferably designed to move and / or move linearly along the at least one guide element 62 of the at least one cleaning device 61. The at least one removal unit 63 is preferably designed to be movable and / or movable and / or is moved along the at least one guide element 62 in or against at least one direction, in particular the cleaning direction G and / or the transverse direction A and / or the y-direction. The at least one removal unit 63 is preferably designed to move and / or move along the at least one guide element 62 from the at least one storage position into the at least one use position or vice versa and / or is moved.

The at least one guide element 62 is preferably designed to guide and / or move the at least one removal unit 63 in or against the cleaning direction G. Preferably, if the at least one removal unit 63 is arranged on at least one carrier 76 or is connected to the at least one carrier 76, the at least one guide element 62 is designed to guide and / or move the at least one carrier 76 in or against the cleaning direction G.

The at least one removal unit 63, more preferably the at least one contact element 64, preferably has the at least one storage position.

The at least one storage position of the at least one removal unit 63 is preferably a position of the at least one removal unit 63 when it is not in operative connection with the at least one nozzle bar 04. The at least one storage position of the at least one removal unit 63 preferably corresponds to a storage position of the at least one removal unit 63 when the printing press is in an operating state in which the at least one removal unit 63 is not used. The at least one removal unit 63 is preferably arranged and / or is arranged in the at least one storage position outside of an area between the at least one nozzle bar 04 and the transport path of the printing substrate 03, for example determined by the at least one printing substrate guide element 02 opposite the nozzle bar 04.

In a preferred embodiment, for example shown in FIGS. 10 to 12a, the at least one removal unit 63 is in the at least one storage position, preferably along the y-direction and / or along the transverse direction A, preferably along the longest side of the at least one nozzle bar 04, outside the area between the at least one nozzle bar 04 and the transport path of the printing substrate 03 and / or is arranged. The at least one removal unit 63 is preferably arranged in the at least one storage position along a longest edge of the at least one nozzle bar 04 and / or along the y-direction outside the area between the at least one nozzle bar 04 and the transport path of the printing substrate 03. The at least one removal unit 63 is preferably arranged and / or is arranged in the at least one storage position along the longest side of the at least one nozzle bar 04 and / or along the y-direction outside the area between the at least one nozzle bar 04 and the transport path of the printing substrate 03 . The storage position preferably corresponds to a position along the at least one guide element 62, in particular along its longitudinal direction, outside the area between the at least one nozzle bar 04 and the transport path of the printing substrate 03. The at least one distance unit 63 is preferably along the y-direction and / or along the transverse direction A from the area between the at least one nozzle bar 04 and the transport path of the printing substrate 03 designed to be movable and / or moving in order to get into the at least one storage position.

The at least one contact element 64 preferably has the at least one in the Distance unit 63 arranged in the storage position, further preferably at least one contact area, to the at least one opening of the at least one exit surface 09 of the at least one print head 08 a preferably fifth preferably relative distance and / or is arranged at the relative distance, preferably a distance in the y-direction and / or in transverse direction A. The preferably relative distance of the at least one contact element 64 of the at least one removal unit 63 arranged in the storage position, more preferably of the at least one contact area, to the at least one opening of the at least one exit surface 09 of the at least one print head 08 is preferred at least twice, preferably at least two point five times, more preferably at least three times, more preferably at least five times, as large as an extension in the transverse direction A of the at least one exit surface 09 of the at least one print head 08 of the at least one est a distance unit 63 to be cleaned nozzle bar 04. The relative distance to a first print head 08 of the at least one row of print heads 08 of the at least one nozzle bar 04 is preferably determined, which print head 08 is closest to the storage position.

For example, in an alternative embodiment, for example shown in FIGS. 15 to 17c, the storage position of the at least one removal unit 63 is preferably in the x direction, i.e. preferably along the transport path of the printing substrate 03, before or after the at least one nozzle bar 04 of the printing unit 01 arranged. For this purpose, the at least one cleaning device 61 preferably comprises at least one pivot element 81, preferably at least two pivot elements 81, which forms a pivot axis of the at least one removal unit 63 and / or of the at least one guide element 62. The at least one removal unit 63 and / or the at least one guide element 62 is preferably designed to pivot about the at least one pivot element 81. The at least one removal unit 63 is preferably transferred from the storage position to the use position by pivoting about the at least one pivoting element 81. The at least one removal unit 63 is preferably at a standstill in the at least one storage position.

Preferably, especially if the at least one removal unit 63 is arranged on the at least one carrier 76 and / or is connected to the at least one carrier 76, the at least one carrier 76 has the at least one storage position and / or is at least in the at least one storage position temporarily arranged and / or arrangeable.

The at least one removal unit 63, more preferably the at least one contact element 64, preferably has the at least one insert position.

For example, the at least one removal unit 63 in FIG. 12 b is arranged in the at least one use position. The at least one removal unit 63, more preferably the at least one contact element 64, preferably has the at least one storage position and the at least one insert position.

Preferably, in particular if the at least one removal unit 63 is arranged on the at least one carrier 76 and / or is connected to the at least one carrier 76, the at least one carrier 76 has the at least one deployment position and / or is at least in the at least one deployment position temporarily arranged and / or arrangeable. At least two removal units 63 are preferably arranged together on the at least one carrier 76. In particular then, the at least one carrier 76 preferably has the at least one storage position and the at least one use position.

The at least one removal unit 63 is preferably in at least one cleaning operating state of the printing press, in particular when the at least one removal unit 63 is designed to clean the at least one nozzle bar 04, in the at least one position of use arranged. The at least one insert position of the at least one removal unit 63 is preferably a position within the area between the at least one nozzle bar 04 and the transport path of the printing substrate 03, for example determined by the at least one printing substrate guide element 02 opposite the nozzle bar 04 at least one guide element 62, in particular along its longitudinal direction, within the area between the at least one nozzle bar 04 and the transport path of the printing substrate 03. Preferably, the at least one removal unit 63 is at least temporarily in motion with respect to the cleaning direction G in the at least one operating position at least one contact element 64 of the at least one removal unit 63 arranged in the deployment position, more preferably the at least one contact area, to the at least one opening of the at least one outlet The surface 09 of the at least one print head 08 has a preferably sixth preferably relative distance and / or is arranged at the relative distance, preferably a distance in the y-direction and / or in the transverse direction A. The preferably relative distance of the at least one contact element 64 is preferred at least one distance unit 63 arranged in the use position, more preferably of the at least one contact area, to the at least one opening of the at least one exit surface 09 of the at least one print head 08 a maximum of once, preferably a maximum of zero point five times, as large as an extension in the transverse direction A of at least one exit surface 09 of the at least one print head 08 of the at least one nozzle bar 04 to be cleaned by the at least one removal unit 63. The relative distance in the use position is preferably smaller than in the storage position.

In the preferred embodiment, shown for example in FIGS. 10 to 12b, the at least one distance unit 63 is preferably along the y direction and / or along the transverse direction A, preferably along the longest side of the at least one Nozzle bar 04, designed to be movable and / or moving in the area between the at least one nozzle bar 04 and the transport path of the printing material 03, in order to reach the at least one use position.

In the alternative embodiment, for example shown in FIGS. 15 to 17c, the at least one removal unit 63 is preferably around the at least one pivot element 81 from the storage position, i.e. an area outside the area between the at least one nozzle bar 04 and the transport path of the printing material 03, designed to pivot in the area between the at least one nozzle bar 04 and the transport path of the printing material 03 in order to reach the at least one operating position.

The at least one removal unit 63 is preferably arranged in the at least one operating position when it is in operative connection with the at least one nozzle bar 04. Preferably, the at least one cleaning device 61 is at least temporarily in operative connection with the at least one nozzle bar 04, preferably when the at least one nozzle bar 04 is arranged in the second maintenance position, the intensive cleaning position, and the at least one removal unit 63 is arranged in the operational position. The at least one cleaning device 61, in particular at least two removal units 63 of the cleaning device 61 arranged in the operational position, is preferably in operative connection with at least two, preferably all, nozzle bars 04, which nozzle bars 04 are preferably arranged at the same time in the second maintenance position. Further nozzle bars 04 of the printing unit 01 are preferred, which should not be in active connection with the at least one cleaning device 61, while preferably at least one nozzle bar 04 is in operative connection with the at least one cleaning device 61, preferably arranged in the rest position at this point in time. The at least one cleaning device 61 is preferably designed to clean at least one print head 08 of the at least one nozzle bar 04 arranged in the second maintenance position through at least temporary direct contact. The at least one print head 08, preferably its at least one exit surface 09 and / or its at least one contact surface 11 and / or the at least one positioning gap 07, of the at least one nozzle bar 04 arranged in the second maintenance position, the intensive cleaning position, is at least temporarily in direct contact to at least one component of the cleaning device 61 arranged in the use position, in particular to the at least one contact element 64 of the at least one removal unit 63 arranged in the use position.

The at least one removal unit 63 preferably has the at least one storage position and the at least one use position. The at least one removal unit 63 is preferably designed to be movable and / or movable along the at least one guide element 62 of the at least one cleaning device 61. The at least one removal unit 63 is preferably designed to be movable and / or movable along the at least one guide element 62 in or against the at least one cleaning direction G, preferably in or against the y-direction and / or preferably in or against the transverse direction A, and / or is moved. The at least one cleaning device 61 preferably has at least one drive. The at least one drive of the at least one cleaning device 61 is preferably designed to drive the movement of the at least one removal unit 63, in particular along the at least one guide element 62.

The at least one removal unit 63 is preferably moved from the at least one storage position into the at least one use position or vice versa. The at least one removal unit 63 is preferably designed to be movable and / or movable along the at least one guide element 62, preferably in the cleaning direction G and / or y-direction, of the at least one cleaning device 61, while the at least one nozzle bar 04 is arranged in the at least one maintenance position. The at least one removal unit 63 is preferably along the at least one guide element 62 from the at least one storage position located outside the area between the at least one nozzle bar 04 and the transport path of the printing substrate 03 to the at least one within the area between the at least one nozzle bar 04 and the transport path of the printing substrate 03 arranged use position or vice versa designed to be movable and / or movable. In particular, the at least one nozzle bar 04 is at a standstill.

The at least one cleaning device 61 preferably cleans the at least one print head 08 at least temporarily. The at least one print head 08 in the second maintenance position is preferably cleaned by the at least one cleaning device 61, in particular by the at least one removal unit 63. The at least one removal unit 63 is preferably designed to be movable and / or movable in the at least one operating position in or against the cleaning direction G, preferably in or against the y-direction, preferably along the at least one guide element 62, for example driven by the at least one drive the cleaning device 61. The at least one removal unit 63 is preferably moved in a cleaning step in the at least one insert position in or against the cleaning direction G, preferably in or against the y-direction, preferably along the at least one guide element 62. The at least one print head 08 of the at least one nozzle bar 04, preferably of the at least one nozzle bar 04 of the at least four nozzle bars 04, is preferably by the at least one cleaning device 61 with the at least one removal unit 63 arranged in the at least one operating position with the at least one as a wiper 64 formed contact element 64 cleaned. The at least one removal unit 63 is preferably in the at least one use position within the area between the at least one nozzle bar 04 and the transport path of printing substrate 03 arranged.

The at least one nozzle bar 04 further preferably comprises the at least two print heads 08. The at least two print heads 08 are preferably arranged in at least two rows different from one another. The at least one cleaning device 61 preferably cleans the at least two rows of print heads 08 of the at least one nozzle bar 04 at the same time.

The at least one printing unit 01 preferably comprises the at least one cleaning device 18. The at least one cleaning device 18 is designed to clean the at least one exit surface 09 and / or the at least one contact surface 11 of the at least one print head 08 of the at least one nozzle bar 04. Preferably, additionally or alternatively, the at least one cleaning device 18 cleans the at least one positioning gap 07. Preferably, each nozzle bar 04 of a printing unit 01 is assigned at least one cleaning device 18.

5a shows an example of a corresponding cleaning device 18 in the use position, which is preferably assigned to a nozzle bar 04 in the first maintenance position. For the sake of clarity, only four print heads 08 of the relevant nozzle bar 04 are shown.

The at least one cleaning device 18 preferably comprises at least one cleaning guide 44 and / or the at least one cleaning drive 21 and / or the at least one collecting pan 22 and / or at least one support device 23; 24 and / or at least one cleaning unit 26, preferably at least one cleaning unit 26 per row of print heads 08 in the y-direction of the relevant nozzle bar 04.

The at least one support device 23; 24 is preferred in each case as at least a positioning aid 23 and / or designed as at least one cleaning aid 24.

In a preferred embodiment, the at least one cleaning device 18 comprises at least two cleaning elements 31. As a result, the at least one cleaning device 18 is preferably designed to clean at least two print heads 08, in particular a plurality of print heads 08, of the at least one nozzle bar 04, in particular to clean at the same time. For example, the at least two print heads 08 in different rows, preferably in at least two rows, are cleaned by print heads 08 of the at least one nozzle bar 04, preferably at the same time.

The at least one cleaning device 18 preferably has an extension in the transverse direction A that is at least as large as the working width of the at least one nozzle bar 04 in the transverse direction A. This means that the at least two print heads 08, preferably all of the exit surfaces 09 of all of the print heads 08, are preferred , more preferably in addition or as an alternative to the exit surfaces 09, the contact surfaces 11 of the print heads 08, of the at least one nozzle bar 04 cleaned in one process. The at least one cleaning device 18 preferably has an extent in the transport direction T of the printing substrate 03 which is at least as large as the extent of the surface of the at least one print head 08 of the at least one nozzle bar 04 in the transport direction T. The at least one cleaning device preferably has 18 in the transport direction T of the printing substrate 03 is at least as large as the extent of a projection of the surface of the at least one print head 08 of the at least one nozzle bar 04 in the plane of the exit surface 09 in the transport direction T. the at least one cleaning element 31 in the transport direction T of printing substrate 03 has an extent which is at least as large as the extent of a projection of the surface of the at least one print head 08 of the at least one nozzle bar 04 in the plane of the exit surface 09 in the transport direction T. Preferably is the extent of the at least one cleaning device 18 in Transport direction T at least greater than the extent of at least two rows of print heads 08 of the at least one nozzle bar 04 in transport direction T. The at least one cleaning device 18 thus preferably at least temporarily encloses the at least two rows of print heads 08 of the nozzle bar 04 arranged in the first or third maintenance position .

The at least one cleaning unit 26 is preferably arranged to be movable and / or moving along the cleaning guide 44, for example by means of the cleaning drive 21. Further preferably, the at least one cleaning unit 26 is arranged to be movable and / or is moved in and / or against a cleaning direction G, in particular along the cleaning guide 44. The at least one collecting trough 22 is preferably arranged to at least partially surround the at least one cleaning unit 26. More preferably, the collecting trough 22 is arranged in such a way that the collecting trough 22 at least partially encloses the cleaning unit 26 and the at least one print head 08 of the relevant nozzle bar 04 which is arranged in the first maintenance position or the third maintenance position.

The at least one cleaning unit 26 preferably comprises at least one assembly element 28, preferably at least two assembly elements 28, and / or at least one force element 29 and / or at least one carrier 27 and / or the at least one cleaning element 31. The at least one assembly element 28 is preferred at least two assembly elements 28, and / or the at least one force element 29 and / or the at least one carrier 27 and / or the at least one cleaning element 31, preferably firmly connected to one another within the corresponding cleaning unit 26.

The at least one assembly element 28, in particular the at least two assembly elements 28, are preferably in direct contact with the at least one force element 29. The at least one force element 29 is, for example, as a bellows and / or Hollow body and / or spring formed and preferably adjustable with regard to its extension and / or dimensions in the z-direction, preferably in a direction whose main component corresponds to the z-direction. The at least one carrier 27 is preferably designed as a base body and / or preferably carries the at least one assembly element 28, preferably at least two assembly elements 28, and / or the at least one force element 29 and / or the at least one cleaning element 31 of the corresponding cleaning unit 26 the at least one cleaning element 31 is arranged in direct contact with at least one assembly element 28, preferably at least two assembly elements 28. Preferably, the extension and / or dimension of the cleaning unit 26 in the z-direction, more preferably in a direction whose main component corresponds to the z-direction, can be adjusted by changing the extension and / or dimension of the at least one force element 29 of the cleaning unit 26 in question / or changeable and / or movable. As a result of this movability, the at least one cleaning element 31 can preferably be brought into contact with other components and / or be brought out of contact, with as such components in particular the at least one print head 08 and / or the at least one support device 23; 24 are eligible.

In a preferred embodiment, the at least one cleaning unit 26 comprises the at least one cleaning element 31, which is connected to the at least one carrier 27 via the at least one force element 29, preferably via at least four force elements 29, for example via exactly four force elements 29. The at least one force element 29, in particular the at least four force elements 29, is preferably designed as a spring. The at least one cleaning element 31 is preferably mounted and / or fastened in a floating manner in the at least one carrier 27, which is preferably designed as a base body, by the at least one force element 29. This preferably enables a precise and simple adjustment of the contact pressure, which the assigned nozzle bar 04 preferably when it is lowered into the maintenance position and / or during its arrangement in the Maintenance position on the at least one cleaning element 31, in particular on at least one sliding point 32 of the cleaning element 31.

The cleaning device 18 preferably has at least one positioning aid 23 different from each print head 08, which preferably has at least one contact surface oriented in the same direction as the at least one contact surface 11 and / or exit surface 09 of the at least one print head 08 the at least one contact surface of the positioning aid 23 preferably with respect to the cleaning direction G following or at a distance from the at least one contact surface 11 of a relevant print head 08 corresponding cleaning element 31 of the print head 08 to be cleaned. In particular, if direct contact is provided between the at least one cleaning element 31 and the exit surface 09 of a print head 08 of the relevant nozzle bar 04, the contact surface is the positioning aid 23 oriented in the same direction as the at least one exit surface 09. If, for example, direct contact is provided between the at least one cleaning element 31 and the exit surface 09 of a print head 08 of the relevant nozzle bar 04, then the cleaning element 31 is preferably designed as a contact element, for example as a wiper . In particular, if only indirect contact is provided between the at least one cleaning element 31 and the exit surface 09 of a print head 08 of the relevant nozzle bar 04, the contact surface of the positioning aid 23 is oriented in the same direction as the at least one contact surface 11, in particular the at least one spacer surface 11 The at least one positioning aid 23 is preferably arranged in such a way that the at least one cleaning element 31 is arranged such that it can be clearly positioned relative to at least one print head 08, in particular that is to be cleaned.

The cleaning device 18 preferably comprises at least one cleaning aid 24 Cleaning aid 24 is preferably designed in such a way that the at least one cleaning element 31 can be cleaned. The cleaning aid 24 preferably has at least one spraying device and / or at least one wiping device.

The at least one cleaning element 31 is preferably designed as a cleaning head 31. The cleaning element 31 is preferably firmly connected to the at least one mounting element 28 and / or the at least one carrier 27 of the cleaning device 18 in question, in particular the cleaning unit 26 in question. The at least one cleaning element 31 is preferably arranged to be movable in and / or against the cleaning direction G.

The cleaning head 31 preferably has at least one fluid supply 38 and at least one fluid discharge opening 39; 41 on. The at least one fluid supply 38 is further preferably designed as at least one fluid supply 38 for supplying cleaning liquid. The at least one fluid discharge opening 39; 41 is more preferred than at least one fluid discharge opening 39; 41 designed for cleaning fluid and / or dirt. The cleaning head 31 further preferably has at least two fluid discharge openings 39; 41, wherein in each case a first fluid discharge opening 39 is preferably designed as a fluid discharge 39 and / or wherein in each case a second fluid discharge opening 41 is preferably designed as a fluid suction 41. The at least one first fluid discharge opening 39 preferably surrounds the at least one fluid supply 38 in one plane at least partially, more preferably completely.

If, for example, the cleaning head 31 is arranged in direct or indirect contact with the at least one print head 08, the at least one fluid supply 38 is, for example, at least one cleaning fluid, in particular a cleaning agent, in the immediate vicinity of the exit surface 09 of the at least one print head 08 and / or one Positioning gap 07 designed to emit and the at least one fluid discharge opening 39; 41 also in the immediate vicinity of the exit surface 09 of the at least one printhead 08 and / or a positioning gap 07 which is designed to be suctioned again from the at least one cleaning fluid. The cleaning head 31 is preferably brought so close to the at least one print head 08 that a cleaning gap is formed between the cleaning head 31 on the one hand and the exit surface 09 of the print head 08 on the other hand, through which the fluid, in particular the cleaning liquid, flows and thus the exit surface 09 of the at least one print head 08 and / or a positioning gap 07 is cleaned and / or can be cleaned.

The at least one cleaning head 31 preferably has at least one sliding point 32 provided in particular for contact with the at least one print head 08, the sliding point 32 preferably being designed as a sliding surface 32. The at least one sliding point 32 is preferably designed for at least partial contact with at least part of at least one contact surface 11 of the at least one print head 08, which is more preferably designed as at least one spacing surface 11.

The at least one cleaning head 31 preferably has at least one ramp 33; 34 on. The cleaning head 31 further preferably has at least one first ramp 33 and at least one second ramp 34. This preferably facilitates positioning of the at least one cleaning element 31 on the at least one print head 08 and / or moving the at least one cleaning element 31 along the at least one nozzle bar 04, for example during a cleaning process. Preferably, the at least one cleaning element 31 can be arranged in at least one first position and / or can be arranged in at least one second position, the first position of the cleaning element 31 being arranged at a distance from the second position of the cleaning element 31, preferably along the cleaning direction G. For example, the first ramp 33 and / or the second ramp 34 is designed as an inclined surface.

The first ramp 33 is preferably designed as an input ramp 33. Is preferred the first ramp 33 is arranged so as to reduce the distance between a reference point of the first ramp 33 and the print head 08 to be cleaned. The reference point of the first ramp 33 is preferably a point of the first ramp 33 which is arranged perpendicular to the print head 08 to be cleaned. In the first position of the cleaning element 31, the first ramp 33 preferably has a first distance from a print head 08 to be cleaned, preferably to at least one exit surface 09 and / or spacer surface 11 to be cleaned, at the reference point of the first ramp 33. In the second position of the cleaning element 31, the first ramp 33 preferably has a second distance to a print head 08 to be cleaned, preferably to at least one exit surface 09 and / or spacer surface 11 to be cleaned, at the reference point of the first ramp 33, the second distance between the reference point of the first ramp 33 and the print head 08 to be cleaned is less than the first distance between the reference point of the first ramp 33 and the print head 08 to be cleaned.

The second ramp 34 is preferably designed as an exit ramp 34. The second ramp 34 is preferably arranged to increase the distance between a reference point of the second ramp 34 and the print head 08 to be cleaned. The reference point of the second ramp 34 is preferably a point of the second ramp 34 which is arranged perpendicular to the print head 08 to be cleaned. Preferably, in the first position of the cleaning element 31, the second ramp 34 at the reference point of the second ramp 34 is at a first distance from a print head 08, in particular to be cleaned, preferably to at least one exit surface 09 and / or distance surface 11 to be cleaned. In the second position of the cleaning element 31 at the reference point of the second ramp 34, the second ramp 34 preferably has a second distance from a print head 08, in particular to be cleaned, preferably to at least one exit surface 09 and / or distance surface 11 to be cleaned, wherein the second distance between the reference point of the second ramp 34 and the print head 08, in particular to be cleaned, is greater than the first distance between the reference point of the second ramp 34 and the print head 08, in particular to be cleaned. Alternatively or additionally, the at least one print head 08 and / or the at least one cleaning head 31 has at least one guide device 36. This guide device 36 is preferably designed as a guide surface 36, the surface normal of which has at least one component which is orthogonal to the z-direction and to the cleaning direction G. The at least one guide surface 36 of a cleaning head 31 preferably directly adjoins at least one sliding surface 32 of the respective cleaning head 31. The at least one guide device 36 is preferably arranged such that the cleaning head 31 can be positioned and / or positioned in a tolerance range or an exact location with respect to a direction oriented parallel to the x-direction and / or orthogonal to the cleaning direction G and orthogonal to the z-direction is.

The cleaning head 31 preferably has at least one cleaning area 37. The at least one cleaning area 37 preferably has the at least one fluid supply 38, preferably the at least one fluid supply 38 designed as a fluid supply opening 38. The at least one cleaning area 37 preferably has the at least one fluid supply 38 and the at least one fluid discharge opening 39; 41 on. The cleaning area 37 further preferably has the at least one fluid supply 38 and / or the at least one fluid discharge 39 and / or the at least one fluid suction 41. The at least one fluid discharge opening 39; 41 each connected to at least one sink for the removal of cleaning agents and / or dirt and / or particles, for example. The at least one fluid supply 38 is preferably connected to a source of cleaning agent. The fluid supply 38 is preferably designed as the fluid supply opening 38 within the cleaning area 37. The at least one cleaning area 37 is preferably arranged between the at least one first ramp 33 and the at least one second ramp 34. In particular, the at least one first ramp 33 is arranged in front of the at least one cleaning area 37 in the cleaning direction G. The at least one second ramp 34 is preferably in FIG Cleaning direction G arranged after the at least one cleaning area 37. The first ramp 33 preferably rises from an outer edge of the cleaning element 31 towards the at least one cleaning area 37. The second ramp 33 preferably rises from an outer edge of the cleaning element 31 towards the at least one cleaning area 37. The gradients of the first ramp 33 and the second ramp 34 are preferably directed opposite to one another.

The fluid supply opening 38 preferably has at least one delimitation of the fluid supply opening 38 in a plane of the surface of the cleaning area 37, preferably orthogonal to the z-direction, with a centroid. The delimitation of the fluid supply opening 38 further preferably has at least one first delimitation point which is arranged with the centroid in alignment with respect to the cleaning direction G. The delimitation of the fluid supply opening 38 preferably has at least one second delimitation point, which is arranged with the centroid in alignment with respect to a direction orthogonal to the cleaning direction G. The delimitation of the fluid supply opening 38 preferably has at least one third delimitation point which is arranged on the delimitation of the fluid supply opening 38 in an extension of a distance from the first delimitation point to the centroid. The delimitation of the fluid supply opening 38 preferably has at least one fourth delimitation point, which is arranged on the delimitation of the fluid supply opening 38 in an extension of a distance from the second delimitation point to the centroid. The respective first delimitation point and the second delimitation point and the third delimitation point and the fourth delimitation point are preferably positioned at a distance greater than zero from one another on the delimitation of the fluid supply opening 38. The distance from the first delimitation point to the third delimitation point on the delimitation of the fluid supply opening 38 is preferably less than the distance from the second delimitation point to the fourth delimitation point on the delimitation of the fluid supply opening 38. A longitudinal direction of the fluid supply opening 38 is preferred at least partially orthogonal to a straight line between the first delimitation point and the center of gravity of the delimitation of the fluid supply opening 38. For example, in other words, the at least one fluid supply opening 38, in particular the delimitation of the fluid supply opening 38, has in the plane spanned by the x-direction and the y Direction, and / or orthogonal to the z-direction, preferably the longitudinal direction of the fluid supply opening 38 and a transverse direction of the fluid supply opening 38. The extent of the fluid supply opening 38 in its longitudinal direction and in its transverse direction is preferably different from one another. The fluid supply opening 38, in particular the delimitation of the fluid supply opening 38, preferably has a maximum extent in its longitudinal direction. The extent of the fluid supply opening 38, in particular the delimitation of the fluid supply opening 38, is preferably smaller in the transverse direction of the fluid supply opening 38 than in its longitudinal direction.

In an exemplary embodiment, a cleaning area 37 has at least two fluid supply openings 38, each with a delimitation of the respective fluid supply opening 38 in a plane of the surface of the cleaning area 37. The at least two fluid supply openings 38 each have a centroid, the centroids of the fluid supply openings 38 preferably being arranged on a straight line. The straight line of the at least two centroids of the fluid supply openings 38 is preferably arranged at least partially orthogonally to the cleaning direction G and orthogonally to the z-direction.

A tangential line through the first delimitation point of the delimitation of the fluid supply opening 38 is preferably arranged at least partially orthogonally to the cleaning direction G and orthogonally to the z-direction. Preferably, the tangential through the first delimitation point of the delimitation of the fluid supply opening 38 to the cleaning direction G in a positive mathematical sense of rotation, this means rotated counterclockwise, has a flat angle of at least 50 °, preferably of at least 60 °, and of at most 130 °, preferably of at most 120 °. The tangential through the first delimitation point of the delimitation of the fluid supply opening 38 is preferably parallel to a plane which is shifted to the position of the positioning gap 07, for example along the y-direction, through the z-direction and at least one direction of the shortest delimitation of a respective exit surface 09, which is spanned in a plane of the x-direction and y-direction, of the print head 08 to be cleaned of the relevant nozzle bar 04, which delimits the positioning gap 07, is spanned.

Preferably, the tangential through the first delimitation point of the delimitation of the fluid supply opening 38 is parallel to a longitudinal direction of the fluid supply opening 38, in particular in the case of a fluid supply opening 38 which is, for example, elongated and / or oval and / or slot-shaped and / or as a groove and / or in another shape is designed as circular. More preferably, the longitudinal direction of the fluid supply opening 38 is aligned parallel to at least one positioning gap 07 of the associated nozzle bar 04. The longitudinal direction of the fluid supply opening 38 is preferably located in a plane spanned by the x direction and the y direction. The fluid supply opening 38 is preferably designed as a groove and / or elongated and / or oval and / or slot-shaped, preferably in the plane orthogonal to the z-direction. A groove preferably has at least two longitudinal sides that are parallel to one another. The longitudinal direction of the fluid supply opening 38 preferably points to the cleaning direction G in a positive mathematical direction of rotation, this means rotated counterclockwise, a preferably flat angle, in particular an opening angle 47, of at least 50 °, preferably of at least 60 °, and of at most 130 ° , preferably of at most 120 °. In other words, this means, for example, that the longitudinal direction of the at least one fluid supply opening 38 has an identical inclination to the longitudinal direction of the at least one positioning gap 07, preferably about the opening angle 47 with respect to the cleaning direction G. In particular, the opening angle 47 thus preferably corresponds to the at least partial oblique overlap in the x direction of the at least two arranged side by side, in particular Print heads 08 adjacent to one another. It can be seen from this, for example, that the opening angle 47 is preferably formed at an acute angle or obtuse. This acute-angled or obtuse design of the opening angle 47 preferably depicts the at least partially inclined overlap in the x direction of the at least two juxtaposed print heads 08 and / or the alignment of the longitudinal direction of the at least one positioning gap 07.

In a preferred embodiment, the fluid supply opening 38 is aligned parallel to at least one positioning gap 07 of the associated nozzle bar 04. More preferably, the fluid supply opening 38 is preferably aligned parallel to the at least one positioning gap 07 between at least two print heads 08, in particular to be cleaned, preferably within a row in the y-direction of a nozzle bar 04. More preferably, the tangential through the first delimitation point of the delimitation of the fluid supply opening 38 is aligned parallel to at least one positioning gap 07 of the associated nozzle bar 04. This enables, for example, an optimal penetration of cleaning agent into the positioning gap 07.

The fluid discharge 39 is preferably arranged at least partially around the fluid supply opening 38 in at least one plane. More preferably, the fluid discharge 39 is arranged completely around the fluid supply opening 38 in at least one plane. The said plane is preferably spanned by the x-direction and the y-direction. Preferably, the fluid drain 39 is, for example, cleaning agent and / or dirt and / or particles that adhere to and / or are residue on the respective exit surface 09 and / or the respective contact surface 11 of a relevant print head 08, can be removed and / or removed.

The fluid discharge 39 preferably has at least one delimitation of the fluid discharge 39 in a plane of the surface of the cleaning area 37, preferably orthogonally the z-direction, with a centroid. The delimitation of the fluid discharge 39 further preferably has at least one fifth delimitation point, which is arranged with the centroid of the boundary of the fluid discharge 39 in alignment with the cleaning direction G. The delimitation of the fluid discharge 39 preferably has at least one sixth delimitation point, which is arranged with the centroid in alignment with respect to a direction orthogonal to the cleaning direction G. The delimitation of the fluid discharge 39 preferably has at least one seventh delimitation point, which is arranged on the delimitation of the fluid discharge 39 in an extension of a distance from the fifth delimitation point to the centroid. The delimitation of the fluid discharge 39 preferably has at least one eighth delimitation point, which is arranged on the delimitation of the fluid discharge 39 in an extension of a distance from the sixth delimitation point to the center of area. The respective fifth delimitation point and the sixth delimitation point and the seventh delimitation point and the eighth delimitation point are preferably positioned at a distance greater than zero from one another on the delimitation of the fluid discharge 39. The distance from the fifth delimitation point to the seventh delimitation point on the delimitation of the fluid discharge 39 is preferably less than the distance from the sixth delimitation point to the eighth delimitation point on the delimitation of the fluid discharge 39. A longitudinal direction of the fluid discharge 39 is preferably at least partially orthogonal to a straight line between the fifth delimitation point and the focus of the delimitation of the fluid discharge 39. For example, in other words, the at least one fluid discharge 39, in particular the limitation of the fluid discharge 39, assigns in the plane spanned by the x-direction and the y-direction and / or orthogonally the z-direction preferably has the longitudinal direction of the fluid discharge 39 and a transverse direction of the fluid discharge 39. The extent of the fluid discharge 39 in its longitudinal direction and in its transverse direction is preferably different from one another. The fluid discharge 39, in particular the delimitation of the fluid discharge 39, preferably has a maximum extent in its longitudinal direction. The extent of the fluid discharge 39, in particular the delimitation of the fluid discharge 39, is preferably smaller in the transverse direction of the fluid discharge 39 than in its longitudinal direction.

Further preferred is a tangential through the fifth delimitation point of the delimitation of the fluid discharge 39 at least partially orthogonal to the cleaning direction G and orthogonal to the z-direction and additionally or alternatively parallel to the corresponding tangential through the first delimitation point of the delimitation of the respective fluid supply opening 38 alternatively, the fluid discharge 39 is preferably oriented at least partially orthogonally to the cleaning direction G and orthogonally to the z-direction and / or parallel to at least one positioning gap 07 of the associated nozzle bar 04. The tangential through the fifth delimitation point of the delimitation of the fluid discharge 39 is preferably aligned parallel to the at least one positioning gap 07 of the associated nozzle bar 04, in particular in a plane of the surface of the cleaning area 37. which is at least partially orthogonal to the cleaning direction G and orthogonal to the z-direction, to the cleaning direction G in a positive mathematical direction of rotation, this means rotated counterclockwise, a flat angle of at least 50 °, preferably of at least 60 °, and of at most 130 °, preferably of at most 120 °.

The tangential through the fifth delimitation point of the delimitation of the fluid discharge 39 is preferably parallel to a longitudinal direction of the fluid discharge 39, in particular in the case of a fluid discharge 39 which is, for example, elongated and / or oval and / or slot-shaped and / or as a groove and / or trapezoidal and / or is designed in a shape other than circular. The fluid discharge 39 is preferably designed in the plane orthogonal to the z-direction, trapezoidal and / or groove-shaped and / or as a parallelogram. The longitudinal direction of the fluid discharge is further preferred 39 aligned parallel to at least one positioning gap 07 of the associated nozzle bar 04. The longitudinal direction of the fluid discharge 39 preferably points to the cleaning direction G in a positive mathematical direction of rotation, this means rotated counterclockwise, a preferably flat angle, in particular a discharge angle 48, of at least 50 °, preferably of at least 60 °, and of at most 130 ° , preferably of at most 120 °. In other words, this means, for example, that the longitudinal direction of the at least one fluid discharge 39 has an identical inclination to the longitudinal direction of the at least one positioning gap 07, preferably about the discharge angle 48 with respect to the cleaning direction G. In particular, the discharge angle 48 thus corresponds to the at least partial oblique overlap in the x direction of the at least two juxtaposed, in particular adjacent, print heads 08. This shows, for example, that the discharge angle 48 is preferably acute-angled or obtuse. This acute-angled or obtuse design of the discharge angle 48 preferably depicts the at least partially inclined overlap in the x direction of the at least two juxtaposed print heads 08 and / or the alignment of the longitudinal direction of the at least one positioning gap 07. This preferably enables optimal suction from the at least one positioning gap 07.

The at least one fluid suction 41 can, for example, have a strong negative pressure applied to it. The fluid suction 41 is preferably designed to remove at least such cleaning fluid and / or such dirt which is still left after at least one suction by means of the at least one fluid discharge 39.

The at least one fluid suction 41 is preferably designed as a relatively narrow slot. The fluid suction 41 preferably has at least one delimitation of the fluid suction 41 in a plane of the surface of the cleaning area 37, preferably orthogonal to the z-direction, with a centroid. More preferably, the delimitation of the fluid suction 41 has at least a ninth Limitation point, which is arranged with the center of gravity of the boundary of the fluid suction 41 in alignment with respect to the cleaning direction G. The delimitation of the fluid suction 41 preferably has at least a tenth delimitation point, which is arranged with the centroid in alignment with respect to a direction orthogonal to the cleaning direction G. The delimitation of the fluid suction 41 preferably has at least one eleventh delimitation point, which is arranged on the delimitation of the fluid suction 41 in an extension of a distance from the ninth delimitation point to the center of the area. The delimitation of the fluid suction 41 preferably has at least one twelfth delimitation point, which is arranged on the delimitation of the fluid suction 41 in an extension of a distance from the tenth delimitation point to the centroid. The ninth delimitation point and the tenth delimitation point and the eleventh delimitation point and the twelfth delimitation point are preferably positioned at a distance greater than zero from one another on the delimitation of the fluid suction 41. The distance of the ninth delimitation point to the eleventh delimitation point on the delimitation of the fluid suction 41 is preferably less than the distance of the tenth delimitation point to the twelfth delimitation point on the delimitation of the fluid suction 41. A longitudinal direction of the fluid suction 41 is preferably at least partially orthogonal to a straight line between the ninth delimitation point and the focus of the delimitation of the fluid suction 41. In other words, for example, the at least one fluid suction 41, in particular the delimitation of the fluid suction 41, has in the plane spanned by the x-direction and the y-direction, and / or The longitudinal direction of the fluid suction 41 and a transverse direction of the fluid suction 41 are preferably orthogonal to the z-direction. The extent of the fluid suction 41 in its longitudinal direction and in its transverse direction is preferably different from one another. The fluid suction 41, in particular the delimitation of the fluid suction 41, preferably has a maximum extent in its longitudinal direction. The expansion of the fluid suction 41, in particular the Limitation of the fluid suction 41, less in the transverse direction of the fluid suction 41 than in its longitudinal direction. This preferably enables optimal suction from the at least one positioning gap 07.

The minimum distance of the ninth delimitation point to the eleventh delimitation point of the fluid suction 41 is preferably less than the minimum distance of the fifth delimitation point to the seventh delimitation point of the fluid discharge 39, preferably the distance is at most half as large, more preferably at most a fifth as large.

The delimitation of the fluid suction 41 preferably has at least two delimitation points which have the greatest possible spacing of all delimitation points of the delimitation of the fluid suction 41 from one another. The greatest possible distance between two delimitation points of the delimitation of the fluid suction 41 to one another preferably has a minimum length of preferably at least 35 mm (thirty-five millimeters), in particular of at least 40 mm (forty millimeters), more preferably of at least 45 mm (forty-five millimeters), and / or a maximum length of preferably at most 60 mm (sixty millimeters), in particular of at most 55 mm (fifty-five millimeters), more preferably of at most 50 mm (fifty millimeters). More preferably, the greatest possible distance between two delimitation points of the delimitation of the fluid suction 41 to one another has a minimum length which is greater than at least one delimitation of a relevant, in particular to be cleaned, exit surface 09 of a relevant print head 08 in a direction which is parallel to the minimum length of the Fluid suction 41 is oriented. The greatest possible distance between two delimitation points of the delimitation of the fluid suction 41 to one another preferably has a minimum length which is greater than at least one delimitation of a relevant, in particular to be cleaned, exit surface 09 of a relevant print head 08 in the x direction. This preferably enables the relevant exit surface 09 to be cleaned and additionally or alternatively cleaning at least one contact surface 11 delimiting the respective exit surface 09.

A tangential through the ninth delimitation point of the delimitation of the fluid suction 41 is preferably positioned at least partially orthogonal to the cleaning direction G and orthogonal to the z-direction and alternatively or additionally parallel to the corresponding tangential through the first delimitation point of the delimitation of the fluid supply opening 38. Additionally or alternatively, the fluid suction 41 is preferably positioned at least partially orthogonally to the cleaning direction G and orthogonally to the z-direction and parallel to the positioning gap 07. The tangential through the ninth delimitation point of the delimitation of the fluid suction 41 is preferably aligned parallel to the at least one positioning gap 07 of the associated nozzle bar 04, in particular in a plane of the surface of the cleaning area 37. which is at least partially orthogonal to the cleaning direction G and orthogonal to the z-direction, to the cleaning direction G in a positive mathematical direction of rotation, this means rotated counterclockwise, a flat angle of at least 50 °, preferably of at least 60 °, and of at most 130 °, preferably of at most 120 °.

The tangential through the ninth delimitation point of the delimitation of the fluid suction 41 is preferably parallel to a longitudinal direction of the fluid suction 41. The longitudinal direction of the fluid suction 41 is more preferably aligned parallel to the at least one positioning gap 07 of the associated nozzle bar 04. The longitudinal direction of the fluid suction 41 preferably points to the cleaning direction G in a positive mathematical direction of rotation, this means rotated counterclockwise, a preferably flat angle, in particular a suction angle 49, of at least 50 °, preferably of at least 60 °, and of at most 130 ° , preferably of a maximum of 120 °, on. In other words, this means, for example, that the longitudinal direction of the at least one fluid suction 41 has an identical inclination to the longitudinal direction of the at least one positioning gap 07, preferably around the suction angle 49 with respect to the cleaning direction G. In particular, the suction angle 49 thus preferably corresponds to the at least partial oblique overlap in the x direction of the at least two juxtaposed, in particular adjacent, print heads 08. It can be seen from this, for example, that the suction angle 49 is preferably formed at an acute angle or obtuse. This acute-angled or obtuse design of the suction angle 49 preferably depicts the at least partially inclined overlap in the x direction of the at least two juxtaposed print heads 08 and / or the alignment of the longitudinal direction of the at least one positioning gap 07.

In a preferred embodiment, the tangentials through the first delimitation point of the delimitation of the fluid supply opening 38 and / or the tangentials through the fifth delimitation point of the delimitation of the fluid discharge 39 and / or the tangentials through the ninth delimitation point of the delimitation of the fluid suction 41 to the cleaning direction G in a positive mathematical sense of rotation, a plane angle of at least 50 °, preferably of at least 60 °, and of at most 130 °, preferably of at most 120 °. More preferably, the longitudinal direction of the fluid supply opening 38 and / or the longitudinal direction of the fluid discharge 39 and / or the longitudinal direction of the fluid suction 41 to the cleaning direction G in a positive mathematical sense of rotation has a flat angle of at least 50 °, preferably of at least 60 °, and of at most 130 °, preferably at most 120 °. The longitudinal direction of the at least one fluid supply opening 38 and / or the longitudinal direction of the at least one fluid discharge 39 and / or the longitudinal direction of the at least one fluid suction 41 are preferably parallel to the at least one longitudinal direction of the at least one positioning gap 07 between at least two juxtaposed print heads 08 of the at least one Nozzle bar 04 aligned.

In a preferred embodiment, the relevant cleaning element 31 comprises at least one cleaning area 37, whereby preferably at least one print head 08 of at least one nozzle bar 04 can be cleaned and / or cleaned. In an alternative exemplary embodiment, the cleaning element 31 in question preferably comprises at least two cleaning areas 37. The at least two cleaning areas 37 in question are preferably connectable and / or connected by at least one connecting element 42. Thus, by means of the one relevant cleaning head 31, which comprises at least two connectable and / or connected cleaning areas 37, preferably at least two print heads 08 can be cleaned and / or cleaned, the at least two print heads 08 preferably in at least two different rows of print heads 08 are arranged in the y-direction. For example, a cleaning head 31 additionally or alternatively to the at least one cleaning area 37 comprises at least one wiper 52, which is arranged, for example, in direct contact with at least one exit surface 09 of a print head 08 to be cleaned.

In a preferred embodiment, the at least one printing unit 01 of the printing press comprises at least one nozzle bar 04 with at least two juxtaposed print heads 08, which delimit the at least one positioning gap 07, with at least one feed device 13 assigned to the respective positioning gap 07 and / or at least one of the relevant Cleaning device 18 associated with the print head 08 of the nozzle bar 04.

For example, the at least one feed device 13 is used in an operating state of the printing machine, with at least one printing material 03 being printable and / or being printed with at least one printing fluid. By ejecting at least one fluid, for example a gas and / or a gas mixture, in particular air, and / or a liquid, through the outlet opening 17 of the respective feed device 13, the penetration and / or deposition of, for example, pressurized fluid into the respective positioning gap 07 is made more difficult and / or prevented.

The at least one cleaning device 18, preferably the at least one cleaning area 37 of the at least one cleaning device 18, is preferably the at least one print head 08, more preferably the at least one exit surface 09 and / or the at least one contact surface 11 and / or the at least one positioning gap 07, trained contactless cleaning. The at least one cleaning device 18 cleans the at least one print head 08 of the print heads 08, preferably without contact. The at least one print head 08, preferably the at least one exit surface 09 of the at least one print head 08, of the at least one nozzle bar 04 is preferably cleaned without contact by the at least one cleaning device 18 with the at least one cleaning element 31 with the at least one fluid supply opening 38. The at least one cleaning area 37 of the at least one cleaning element 31 is preferably designed to clean the at least one exit surface 09 and / or the at least one contact surface 11 and / or the at least one positioning gap 07 in a contactless manner. This means that only an indirect contact, for example via a cleaning fluid, between the at least one cleaning area 37 and at least one of the components listed below of the at least one print head 08, preferably the at least one exit surface 09 and / or the at least one contact surface 11 and / or the at least one positioning gap 07 is present. The at least one cleaning area 37, preferably at least the at least one fluid supply opening 38, is preferably to the at least one print head 08, preferably at least to the at least one exit surface 09 and / or to the at least one contact surface 11 and / or to the at least one positioning gap 07, preferably permanently spaced at a distance greater than zero. Preferably the at least one cleaning area 37, preferably at least the at least one fluid supply opening 38, to the at least one print head 08, preferably at least to the at least one exit surface 09 and / or to the at least one contact surface 11 and / or to the at least one positioning gap 07, preferably arranged permanently without contact.

In at least one cleaning process, at least the at least one cleaning element 31 and / or the at least one cleaning unit 26 is preferably moved in the cleaning direction G. For example, the relevant cleaning element 31 and / or the relevant cleaning unit 26 has a constant speed along the cleaning direction G. The fluid supply opening 38 preferably ejects cleaning agent which comes into contact with the at least one exit surface 09 and / or the at least one contact surface 11 and / or the at least one positioning gap 07 of the relevant nozzle bar 04. The cleaning agent preferably cleans the at least one exit surface 09 and / or the at least one contact surface 11 and / or the at least one positioning gap 07 Contact surface 11 and / or of the positioning gap 07 in a preferably first removal step, preferably by applying negative pressure. The fluid suction 41 preferably sucks in a second removal step, for example, the cleaning agent and / or dirt which, for example, has remained and / or stuck on the outlet surface 09 and / or on the contact surface 11 and / or in the positioning gap 07 after the first removal step.

Alternatively or in addition, the cleaning element 31 and / or the cleaning unit 26 is preferably slowed down and / or stopped in its speed in the cleaning direction G at at least one position, which is assigned to a positioning gap 07, for example, whereby, for example, the relevant positioning gap 07 can be cleaned and / or is feasible. Preferred the at least one feed device 13 ejects a fluid, for example a gas and / or a gas mixture, in particular air, and / or a liquid, through the at least one outlet opening 17 during the at least one cleaning process. Thus, during the cleaning process, penetration and / or deposition of the cleaning agent into the respective positioning gap 07 is made more difficult and / or prevented.

For example, intensive cleaning of the at least one relevant positioning gap 07 is preferably carried out, with the cleaning element 31 and / or the cleaning unit 26 preferably slowing down and / or in its speed in the cleaning direction G at the at least one position which is preferably assigned to the respective positioning gap 07 is stopped and / or the feed device 13 ejects at least one fluid, for example a gas and / or a gas mixture, in particular air, and / or a liquid.

In a preferred embodiment of the cleaning element 31, the at least one cleaning element 31 has at least two sliding surfaces 32, which are arranged one behind the other in the cleaning direction G, preferably in alignment with one another. For example, the at least two sliding surfaces 32 are spaced apart from one another by a distance greater than zero. In particular, in the cleaning direction G, after the at least one cleaning area 37, in particular after the at least one fluid suction 41, and / or in front of the at least one second ramp 34, at least one edge 51 is arranged. The at least one cleaning region 37 is preferably raised in the z-direction compared to a surface of the cleaning element 31 after the at least one edge 51, in particular in the z-direction compared to the at least one second ramp 34. As a result, the distance between the cleaning element 31 and the at least one exit surface 09 of the at least one print head 08 is increased, preferably directly after the cleaning area 37, in particular after the at least one fluid suction 41. In particular, the at least one edge 51 prevents a smearing of pressure fluid, which at this point in time, preferably when the at least one Cleaning element 31 passes the relevant exit surface 09 on which at least one exit surface 09 is located. At least one of the at least two sliding surfaces 32 arranged one behind the other in the cleaning direction G is preferably arranged in the cleaning direction G after the at least one cleaning area 37, in particular on the at least one second ramp 34. This ensures optimal guidance of the cleaning element 31 in the area after the at least one cleaning area 37, so that a distance greater than zero from the at least one surface of the cleaning element 31 and / or the at least one second ramp 34, in particular in the z-direction, to the at least one exit surface 09 is guaranteed. When the at least one cleaning element 31 is positioned against the at least one print head 08 or vice versa and / or when the cleaning element 31 is moved in or against the cleaning direction G, the at least one sliding surface 32, preferably all sliding surfaces 32, is preferably orthogonal to the cleaning direction G in front or arranged behind the at least one exit surface 09, for example at a distance from the at least one exit surface 09 orthogonally to the cleaning direction G, that is to say preferably arranged laterally. The at least one sliding surface 32 preferably has a greater extent in the cleaning direction G than orthogonally to the cleaning direction G.

In a preferred embodiment of the at least one cleaning element 31, the cleaning element 31 has at least two cleaning areas 37, preferably four cleaning areas 37. The at least one cleaning element 31 preferably has as many cleaning areas 37 as the number of rows of print heads arranged next to one another, in particular in the x direction, of the nozzle bar 04 assigned to this cleaning element 31. The at least two cleaning areas 37 are preferably arranged next to one another orthogonally to the cleaning direction G and / or orthogonally to the y-direction and / or in the x-direction. At least two rows of print heads 08, preferably four rows of print heads 08, more preferably all rows of print heads 08 of a nozzle bar 04, are therefore preferred at the same time and / or cleaned with the at least one cleaning element 31 and / or can be cleaned.

For example, the at least one cleaning element 31, preferably if it comprises at least two cleaning areas 37, has at least one sliding surface 32 in each case in the x direction before a first cleaning area 37 and / or in the x direction after a last cleaning area 37. The at least one cleaning element 31 preferably has no additional sliding surface 32 between its first and last cleaning area 37. For example, additionally or alternatively, the at least one cleaning element 31, preferably if it comprises at least two cleaning areas 37, has at least one guide surface 36 in each case in the x direction before a first cleaning area 37 and / or in the x direction after a last cleaning area 37. The at least one cleaning element 31 preferably has no additional guide surface 36 between its first and last cleaning area 37.

In a preferred embodiment, the at least one nozzle bar 04 comprises at least two rows of print heads 08. The at least two rows of print heads 08 are each at an angle of at least 1 ° (one degree), preferably of at least 3 ° (three degrees), more preferably by 4 ° (four degrees), arranged to one another. This is particularly the case when the at least one nozzle bar 04 is opposed by a curved and / or cylindrical printing substrate guide element 02. The at least two rows of print heads 08 are preferably each at an angle of at least 1 ° (one degree), preferably of at least 3 ° (three degrees), more preferably of 4 ° (four degrees), with respect to a normal vector of the respective exit surfaces 09 arranged to each other.

A surface of the cleaning element 31 which has the at least one fluid supply 38 and the at least one fluid discharge 39 and the at least one is preferred Fluid suction 41 comprises, preferably the plane of the surface of the respective cleaning area 37, in each case arranged parallel to the at least one exit surface 09 of the at least one print head 08, which is assigned to this area and / or this cleaning area 37. This area and / or this cleaning area 37 is more preferably directed towards this at least one exit area 09. The normal vectors of at least two surfaces of the cleaning element 31, which each comprise at least one fluid supply 38 and at least one fluid discharge 39 and at least one fluid suction 41, preferably of the surfaces of the at least two cleaning areas 37 of the cleaning element 31, have an angle of at least 1 ° to one another ( one degree), preferably of at least 3 ° (three degrees), more preferably of 4 ° (four degrees).

At least one throttle is preferably arranged in the fluid supply 38, in particular a channel of the fluid supply 38. The at least one throttle is preferably designed to regulate the supply of cleaning agent to the at least one fluid supply opening 38, in particular as a function of the angular position and / or inclined position of the respective cleaning area 37.

For example, additionally or alternatively, the at least two cleaning areas 37 of a cleaning element 31 are arranged offset from one another in the cleaning direction G. As a result, they preferably map an offset of the existing rows of print heads 08 to one another.

The at least one cleaning element 31 preferably additionally has the at least one wiper 52 after the at least one cleaning area 37 in the cleaning direction G. The at least one wiper 52 is preferably designed as a wiper lip, for example made of rubber. The at least one wiper 52 preferably extends in the x direction over the entire length of the exit surface 09 of the at least one associated print head 08 in this direction. The at least one nozzle bar 04 is preferably arranged at least temporarily in the depot position, the third maintenance position.

The at least one printing unit 01 preferably comprises the at least one sealing element 56. The at least one sealing element 56 is preferably designed as a rubber lip. The at least one nozzle bar 04 preferably comprises the at least two print heads 08, more preferably at least four print heads 08, more preferably at least eight print heads 08, each with at least one exit surface 09 at least eight print heads 08 are preferably arranged in at least one row of print heads 08 along the longest side of the at least one nozzle bar 04, preferably in the y direction and / or transverse direction A. The at least one sealing element 56 is preferably at least temporarily in direct contact with the at least two print heads 08, preferably the at least four print heads 08, more preferably the at least eight print heads 08, and / or comes into direct contact at least temporarily. The at least one sealing element 56 is preferably arranged in direct contact with all print heads 08 of the at least one row along the longest side of the at least one nozzle bar 04, preferably in the y-direction and / or transverse direction A, at least at times.

The at least one sealing element 56 is preferably in operative connection with the at least one print head 08, in particular its exit surface 09, preferably the at least two print heads 08, more preferably the at least four print heads 08, when the at least one nozzle bar 04 is arranged in its depot position and the at least one cleaning device 18 is arranged in its position of use and preferably additionally the at least one cleaning element 31 is arranged in its storage position. The at least one sealing element 56 is preferably fastened to at least one support 57 and / or firmly connected to it. The at least one support 57 and / or the at least one sealing element 56 preferably each have a longitudinal direction which is directed along its longest extent. The longitudinal direction of the at least one sealing element 56 and / or the longitudinal direction of the at least one support 57 is preferably directed parallel to the longest side of the at least one nozzle bar 04, in particular parallel to the transverse direction A and / or parallel to the y-direction. The length of the at least one sealing element 56 along its longitudinal direction and / or the length of the at least one support 57 is preferably greater than the length of the at least one exit surface 09, more preferably the at least two exit surfaces 09, more preferably the at least four exit surfaces 09, more preferably of all exit surfaces 09 of the juxtaposed print heads 08 of the at least one nozzle bar 04.

The at least one printing unit 01 preferably comprises at least two sealing elements 56. One of the at least two sealing elements 56 is preferably arranged in front of the at least one exit surface 09 in the x direction. One of the at least two sealing elements 56 is preferably arranged in the x direction after the at least one exit surface 09. Preferably, one sealing element 56 is at least temporarily in direct contact, i.e. preferably in direct contact, with the at least one contact surface 11 of the at least one print head 08 of the at least two print heads 08, preferably with all contact surfaces arranged next to one another in the y-direction and / or transverse direction A. 11 of the print heads 08 arranged next to one another. The at least one exit surface 09, preferably the at least two exit surfaces 09, preferably all exit surfaces 09 of the print heads 08 arranged next to one another, are thus delimited at least in and against the x-direction by at least one sealing element 56 in each case and / or enclosed. The two sealing elements 56 in each case are preferably arranged on the at least one support 57 opposite one another in the x direction and spaced apart from one another. For example, the at least two opposing sealing elements 56 each have two connecting pieces. Preferably, a connecting piece in the y-direction at the front end of the nozzle bar 04 and a connecting piece in the y-direction at the rear end of the nozzle bar 04 are designed to connect the two mutually opposite sealing elements 56.

The at least two sealing elements 56 and the at least two print heads 08, preferably the at least four print heads 08, preferably all of the print heads 08 of a nozzle bar 04 arranged next to one another, preferably form a preferably at least partially closed spatial area when they are in operative connection with one another. More preferably, the at least two sealing elements 56 and the two connecting pieces and the at least two print heads 08, preferably the at least four print heads 08, preferably all of the print heads 08 of a nozzle bar 04 arranged side by side, form a preferably at least partially closed space when they are in operative connection with one another. The at least partially closed space area is preferably designed as a conservation area. The at least two sealing elements 56, preferably with the at least two print heads 08, more preferably additionally with the two connecting pieces, delimit the at least one conservation area. More preferably, the at least two sealing elements 56 and the at least two print heads 08 and the at least one support 57 form the at least one preservation area. The nozzle bar 04 preferably has exactly one preservation area per row of print heads 08 arranged next to one another in the y-direction and / or transverse direction A. More preferably, the precisely one conservation area per row of print heads 08 comprises all exit surfaces 09 of all print heads 08 in this row. The preservation area preferably includes an atmosphere that has at least one preservation medium. The at least one preservation medium preferably has at least air enriched with water and / or air enriched with pressurized fluid. For example, the preservation area is filled with at least one fluid, for example with air and / or with air enriched for example with water and / or with cleaning agent and / or with pressurized fluid, flushed and / or flooded. This atmosphere is preferably designed to be gentle on the at least one exit surface 09 and protects the pressure fluid of the at least two print heads 08 from drying out.

Preferably, the at least one conservation area is thus the at least one exit surface 09 of the at least two print heads 08, preferably the at least two exit surfaces 09, preferably arranged next to one another in the y-direction, more preferably the at least four preferably arranged next to one another in the y-direction, as opposed to their Surrounding area is at least temporarily designed to be sealing and / or the at least one preservation area is preferably designed to preserve pressure fluid of the at least two print heads 08, preferably of the at least four print heads 08. The at least one sealing element 56 is preferably designed in a sealing manner and / or seals at least two exit surfaces 09 of at least two print heads 08 of at least one row of print heads 08 of the at least one nozzle bar 04.

The at least one sealing element 56 is preferably arranged in the at least one cross member 22. The at least two print heads 08, preferably the at least four print heads 08, are preferably arranged in or on the at least one cross member 22 during direct contact with the at least one sealing element 56. As a result, the depot position is preferably determined by the position of the at least one cross member 22. For preservation, the at least one sealing element 56, preferably the at least two sealing elements 56, which are preferably opposite one another, are preferably brought into contact with the at least two print heads 08, preferably the at least four print heads 08. The at least one sealing element 56, preferably the at least two sealing elements 56, preferably opposite one another, can be moved and / or moved relative to the at least two print heads 08 into or out of the area between the at least one nozzle bar 04 and the transport path of the at least one printing substrate 03 educated. Preferably, the at least one sealing element 56, preferably the at least two sealing elements 56, which are preferably opposite one another, is relative to the at least two print heads 08 in a direction orthogonal to the longest side of the at least one nozzle bar 04, preferably orthogonal to the y-direction, and / or designed to be traversing and / or displaceable parallel to the at least one transport path of the at least one printing substrate 03. The at least one cross member 22 preferably has at least four sealing elements 56, which are designed to delimit at least two conservation areas that are different from one another. Preferably, two sealing elements 56 are arranged opposite one another in the crossbeam 22, as a result of which the at least four sealing elements 56 in the crossbeam 22 are designed to delimit at least two mutually different preservation areas. Preferably, additionally or alternatively, at least two cross members 22, preferably each with at least four sealing elements 56, are designed to be movable and / or movable together. Preferably, each row of print heads 08, for example two rows of print heads 08, of the at least one nozzle bar 04, for example four nozzle bars 04, of the printing unit 01 is assigned at least one sealing element 56, preferably two sealing elements 56.

In a preferred embodiment, the at least one cleaning device 18 comprises the at least one sealing element 56, preferably the at least two sealing elements 56. The at least one cleaning device 18 preferably has two sealing elements 56 per row of print heads 08 arranged next to one another in the y-direction, for example at least two rows , preferably exactly two rows. The cleaning device 18 preferably has the at least one support 57, preferably the at least two supports 57, more preferably in each case at least one support 57 for two mutually opposite sealing elements 56. The at least one support 57 and / or the at least one sealing element 56 is furthermore preferably arranged in the at least one cross member 22 designed as a collecting trough 22. The at least one collecting trough 22 preferably at least partially encloses the at least one support 57. the at least one cleaning device 18 preferably has the at least one cleaning element 31. The at least one cleaning element 31 is preferably arranged in the storage position when the at least one sealing element 56 is arranged in direct contact with the at least one print head 08. The at least one cleaning element 31 is preferably arranged in the storage position when the at least one sealing element 56 is arranged in at least temporary direct contact with the at least one print head 08.

The at least one cross member 22, in particular designed as a collecting trough 22, is preferably designed to collect fluid, for example pressurized fluid, and / or dirt. In particular, the at least one collecting trough 22 is designed to collect pressure fluid which is ejected from the at least one print head 08 in the depot position. The at least one collecting trough is preferably connected to a reservoir of fluid, for example for reprocessing or reuse, and / or a drain to which the collected fluid and / or the dirt are directed.

At least temporarily, the at least one cleaning device 18 is preferably arranged in the use position. The at least one nozzle bar 04 is then preferably arranged either at least in the cleaning position or in the depot position. The at least one cleaning device 18 is preferably designed to be at least partially cleaning the nozzle bar 04 arranged in the cleaning position. The at least one sealing element 56, preferably the at least two sealing elements 56, is preferably in direct contact with the at least one print head 08, preferably the at least two print heads 08, more preferably the at least four print heads 08, of the nozzle bar 04 arranged in the depot position. The at least one nozzle bar 04 is preferably arranged in the rest position or the first maintenance position before the arrangement in the depot position. The at least one nozzle bar 04 is preferably applied to the at least one sealing element 56, preferably lowered onto the at least two sealing elements 56. In particular, the at least one sealing element 56, preferably the at least two sealing elements 56, and / or the at least one cross member 22 is in a position that corresponds to the use position of the at least one cleaning device 18 while the at least one nozzle bar 04 is being lowered into the depot position. If the at least one cleaning device 18 is preferably arranged in the use position, the at least one nozzle bar 04 is optionally arranged at least in the first maintenance position, preferably cleaning position, or in the third maintenance position, preferably depot position. The at least one cleaning device 18 is preferably designed to at least partially clean the nozzle bar 04 arranged in the first maintenance position, the cleaning position. The at least one sealing element 56 is preferably arranged in direct contact with the at least one print head 08 of the nozzle bar 04 arranged in the third maintenance position, the depot position. The at least one cleaning device 18 is preferably arranged and / or is arranged in the use position. Preferably, the at least one nozzle bar 04 is optionally arranged and / or is arranged at least in the first maintenance position or in the third maintenance position. The at least one cleaning device 18 preferably at least partially cleans the nozzle bar 04 arranged in the first maintenance position, or preferably the at least one sealing element 56 comes into direct contact with the at least one print head 08 of the nozzle bar 04 arranged in the third maintenance position.

The at least one printing unit 01 preferably comprises at least one cleaning device 61. The at least one cleaning device 61 is preferably assigned to at least one nozzle bar 04 of the printing unit 01. For example, the cleaning device 61 is assigned to at least two, preferably all, of the nozzle bars 04 of the printing assembly 01. The at least one cleaning device 61 preferably comprises the at least one removal unit 63 with the at least one contact element 64. The at least one cleaning device 61 preferably comprises the at least one removal unit 63. More preferably, the cleaning device 61 comprises at least two, preferably at least four, removal units 63. More preferably the cleaning device 61 comprises at least as many removal units 63 as the printing assembly 01 has nozzle bars 04. More preferably, each row of print heads 08 of the at least one nozzle bar 04, in particular all nozzle bars 04 of the printing assembly 01, is assigned at least one removal unit 63 and / or at least temporarily comes into contact with at least one removal unit 63.

The at least one cleaning device 61 preferably comprises the at least one carrier 76. The at least one removal unit 63 is preferably arranged on the at least one carrier 76 and / or connected to the at least one carrier 76. At least two removal units 63 are preferably arranged on the at least one carrier 76, in particular on at least one common carrier 76, and / or connected to it. Exactly as many distance units 63 are preferably arranged on the at least one, in particular a common, carrier 76 as the at least one printing unit 01 comprises nozzle bar 04. Preferably, at least one removal unit 63 arranged on the at least one carrier 76 is assigned to each nozzle bar 04 and / or is at least temporarily in operative connection therewith.

The at least one cleaning device 61 preferably comprises the at least one guide element 62 and the at least one removal unit 63. The cleaning device 61 preferably comprises at least two removal units 63, preferably at least four removal units 63, more preferably as many removal units 63 as there are nozzle bars 04 in the relevant printing unit 01 are.

Preferably, the at least one distance unit 63 is in and / or opposite to the Cleaning direction G designed to move, in particular along the at least one guide element 62. Preferably, additionally or alternatively, the at least one guide element 62 is designed to move the at least one removal unit 63 in and / or against the cleaning direction G.

The at least one removal unit 63 preferably comprises the at least one contact element 64. More preferably, the at least one removal unit 63 comprises precisely one contact element 64. The at least one contact element 64 is preferably at least temporarily in direct contact with the at least one print head 08 in at least one contact area The at least one contact element 64 is preferably at least temporarily in direct contact with the at least one print head 08 of the at least one nozzle bar 04 arranged in the second maintenance position. The at least one removal unit 63, in particular the at least one contact element 64, preferably assigns the at least one contact area the at least one print head 08, in which the at least one contact element 64 and the at least one print head 08 are at least temporarily in direct contact with one another. More preferably, the at least one removal unit 63, in particular the at least one contact element 64, has exactly one contact area with the at least one print head 08. The at least one exit surface 09 of the at least one print head 08 is preferably arranged at least temporarily within the contact area of the at least one contact element 64 to the at least one print head 08. The at least one contact element 64 is preferably designed to clean the at least one print head 08, more preferably the at least one exit surface 09 and / or the at least one contact surface 11 and / or the at least one positioning gap 07, with at least occasional direct contact.

The cleaning device 61 preferably comprises the at least two removal units 63. The at least two removal units 63 are preferred arranged together on the at least one carrier 76. The at least two distance units 63 preferably have an angle of inclination with respect to the z direction, which corresponds to an inclination with respect to the z direction of the at least one nozzle bar 04 and / or at least one print head 08 of the nozzle bar 04. The inclination preferably corresponds to the inclination of the associated nozzle bar 04 and / or its print head 08. For example, in the event that the transport path of the printing substrate 03 is curved within the printing unit 01 and thus the at least two nozzle bars 04 preferably have an inclination in the z-direction, If the at least two distance units 63 have an inclination, preferably with respect to the z-direction, which corresponds to the inclination of the nozzle bar 04 assigned to them and / or its at least one print head 08. For example, in the case of a flat, for example horizontal transport path, the at least two nozzle bars 04 and / or the at least two distance units 63 are preferably aligned and / or positioned flat, preferably horizontally. This preferably enables optimal application of the at least one contact element 64 to the at least one print head 08 and / or its cleaning.

In a preferred embodiment, the at least one contact element 64 is designed as a wiping element 64, more preferably as a wiping cloth 64. For example, the at least one contact element 64 is designed as a wipe 64 with a length of at least 50 cm (fifty centimeters), preferably of at least 1 m (one meter), more preferably of at least 1.5 m (one point five meters). More preferably, the at least one contact element 64 has a length greater than the extent of the nozzle bar 04 in the transverse direction A. The at least one wipe 64 is preferably lint-free. The cloth quality, in particular the roughness, of the at least one wiper 64 is preferably different according to the degree of soiling to be cleaned. For example, the at least one wiper 64 has a first roughness in the case of low soiling and a second roughness in the case of high soiling, the second roughness being higher than the first roughness. Preferably at least that is a wipe 64 can be exchanged and / or adjusted and / or is exchanged and / or adjusted according to the degree of soiling.

Preferably, in particular if the at least one contact element 64 is designed as a wiping element 64, the at least one cleaning device 61 is designed as a wiping device 61. Preferably, in particular if the at least one contact element 64 is designed as a wiping element 64, the at least one removal unit 63 is designed as a wiping unit 63.

The at least one removal unit 63 preferably comprises at least one pressure element 66, which is preferably designed as at least one pressure roller 66. The at least one pressing element 66 is preferably designed to press the at least one contact element 64, in particular designed as a wipe 64, at least temporarily against the at least one exit surface 09 and / or the at least one contact surface 11 and / or the at least one positioning gap 07 of the at least one print head 08. Preferably, the at least one pressure element 66 is resiliently mounted. The at least one resiliently mounted pressure element 66 is preferably set and / or adjustable with respect to its position in the z-direction. Preferably, additionally or alternatively, a contact pressure of the at least one contact pressure element 66 against the at least one print head 08 is preferably set and / or adjustable. In particular, a contact pressure of the at least one contact pressure element 66 with which the at least one contact element 64 is pressed against the at least one exit surface 09 and / or the at least one contact surface 11 and / or the at least one positioning gap 07, preferably via the spring-loaded mounting, for example the Stiffness of the storage and / or the position of the storage in the z-direction, set and / or adjustable.

The at least one removal unit 63 preferably has at least one supply 67 of the contact element 64, which is preferably designed as an unwinding device 67. For example, unused contact element 64, in particular in the form of a wipe 64, is collected on supply 67, which contact element 64 is output, preferably unwound, and / or can be unwound as required. The at least one contact element 64, which is arranged and / or collected on the supply 67, is preferably designed as a roll, for example as a supply roll. The at least one supply 67 is preferably arranged in at least one housing 74. For example, such a clean contact element 64 is protected from dirt and / or other external influences. The at least one reservoir 67 preferably has at least one element which generates braking force. For example, the element generating at least one braking force is designed as at least one spring and / or at least one pressure element. For example, the at least one housing 74 is designed as the element generating at least one braking force. The at least one reservoir 67 is preferably designed to adjust and / or introduce the tension of the at least one contact element 64, in particular designed as a wiper 64, along its guide path, preferably by the element generating at least one braking force. The braking force preferably counteracts a transport movement of the at least one contact element 64.

The at least one removal unit 63 preferably comprises at least one memory 68 of the at least one contact element 64, which is preferably designed as a winding device 68. The at least one memory 68 is preferably driven and / or connected to at least one drive. For example, contact element 64 is collected and / or collectable on memory 68, which was preferably previously used for cleaning at least one print head 08 and / or at least one exit surface 09 and / or at least one contact surface 11 and / or at least one positioning gap 07 and / or is usable. The at least one storage unit 68 is preferably designed to be wound up and / or the contact element 64 can be wound up in the at least one storage unit 68. The at least one contact element 64, preferably designed as a wipe 64, is preferably which is arranged and / or collected on the memory 68, designed as a roll, for example as a storage roll.

The at least one contact element 64 is preferably designed and / or can be guided from the at least one reservoir 67 via the at least one pressing element 66 to the at least one reservoir 68. This route is referred to above and below as the guide path of the contact element 64.

The at least one cleaning device 61 preferably has the at least one drive. The at least one memory 68 is preferably driven and / or connected to the at least one drive. The at least one drive is preferably designed to change the at least one contact element 64 with respect to the contact area to the at least one print head 08. The at least one contact element 64 is preferably designed to change at least its surface within the at least one contact area. The at least one contact element 64 preferably changes at least its surface, which is located within the at least one contact area. The at least one drive is preferably designed to wind the at least one contact element 64 on the at least one store 68 and / or to unwind from the at least one store 67. Preferably, in addition or as an alternative, the at least one drive is constructed pneumatically. This advantageously increases the resistance of the at least one removal unit 63 to fluids and / or environmental influences. For example, as an alternative, the at least one drive is designed as an electric motor.

The speed at which the at least one contact element 64 is changed with respect to the contact area to the at least one print head 08 is preferably adapted to a movement of the at least one removal unit 63 in the cleaning direction G and / or to the number of print heads 08 to be cleaned in a cleaning step and / or customizable. The at least one contact element 64 is preferably formed changing at least its surface within the at least one contact area. For example, the at least one contact element 64 is designed to continuously change at least its surface within the at least one contact area. Preferably, as an alternative, the at least one contact element 64 is designed to change at least its surface within the at least one contact area in a clocked and / or incremental manner. For example, the at least one distance unit 63 has a clock.

The at least one distance unit 63 preferably has at least one clock generator 78. The at least one clock generator 78 is preferably connected to the at least one drive or to the at least one drive, for example via at least one line 73 designed as a drive line 73. The at least one clock generator 78 is preferably designed as a linearly guided element, more preferably as at least one piston and / or at least one pneumatic cylinder. The at least one drive is preferably designed to drive the at least one clock generator 78, which is designed as a linearly guided element, pneumatically.

The at least one removal unit 63 preferably has at least one tap element 77. The at least one clock generator 78 is preferably designed to transmit at least one movement to the at least one tap element 77. The at least one pick-off element 77 is preferably designed as a toothed wheel and / or as a ratchet wheel. The at least one tap element 77 is preferably in operative connection with the at least one contact element 64; the at least one tap element 77 is preferably designed to drive the at least one contact element 64. The at least one tap element 77 is preferably designed to drive the at least one memory 68. The at least one storage unit 68 is preferably designed to wind up the at least one contact element 64, in particular through its drive.

The at least one clock generator 78 is preferably the at least one tap element 77 trained to drive. The at least one tap element 77 is preferably designed to drive the at least one memory 68. The at least one memory 68 is preferably designed to transmit at least one movement to the at least one contact element 64. The at least one clock generator 78 is preferably designed to transmit at least one movement, for example via at least one pulse, to the at least one tap element 77, which is designed to transmit this at least one movement to the at least one memory 68 and thus to the at least one contact element 64. The at least one clock generator 78 preferably comes into contact with the at least one tap element 77 in a linear stroke movement, i.e. forwards and / or backwards, and this at least one tap element 77 is thereby designed to move at least around part of its circumference. The at least one clock generator 78 is preferably designed to set the at least one tap element 77 in motion along a first direction of rotation at least twenty times, preferably thirty times, more preferably at least forty times, before it has completed a complete rotation of 360 ° (three hundred and sixty degrees). For example, each individual pulse which sets the at least one tap element 77 in motion is referred to as a single clock.

The at least one removal unit 63 preferably has at least one blocking element 79, for example a reverse rotation lock. The at least one blocking element 79 is preferably permanently in contact with the at least one tapping element 77. The at least one blocking element 79 is preferably designed to block the movement of the at least one tapping element 77, preferably selectively. Further preferably, the blocking element 79 is designed to allow only the first direction of rotation of the at least one tap element 77. In this case, the at least one blocking element 79 is preferably designed to block a rotation of the at least one tap element 77 counter to the first direction of rotation.

The at least one tap element 77 and / or the at least one is preferably Clock generator 78 and / or the at least one blocking element 79 arranged within the at least one housing 74.

For example, the at least one removal unit 63 comprises at least one deflection means 69. The at least one deflection means 69 is preferably arranged along the guide path of the contact element 64 between the at least one supply 67 and the at least one pressure element 66. For example, especially if the at least one contact element 64 is designed as a wiper 64, the wiper 64 is deflected and / or deflected starting from the at least one supply 67 along its guide path around the at least one deflection means 69 with respect to its transport direction T. In this way, direct contact between the contact element 64 and the at least one print head 08 is preferably only ensured in the at least one contact area, that is to say on the at least one pressure element 66. For example, in addition or as an alternative to the at least one braking force generating element, the tension of the at least one contact element 64, in particular designed as a wipe 64, is preferably adjustable and / or adjusted along its guide path by the at least one deflection means 69.

The at least one removal unit 63 preferably comprises at least one nozzle 71. The at least one nozzle 71 is preferably arranged along the guide path of the at least one contact element 64 between the at least one supply 67 and the at least one pressure element 66 and more preferably on the guide path of the contact element 64 and / or directed at the at least one contact element 64. The at least one nozzle 71 is preferably designed to spray fluid onto the at least one contact element 64 along the guide path of the at least one contact element 64 in front of the at least one contact area. The at least one deflection means 69 preferably comprises the at least one nozzle 71. The at least one deflection means 69 preferably comprises at least two nozzles 71, more preferably a plurality at nozzles 71. The at least one nozzle 71 is preferably arranged on the circumference of the at least one deflecting means 69 and directed towards the guide path of the at least one contact element 64. For example, at least two nozzles 71 are arranged next to one another along the circumference of the at least one deflection means 69.

The at least one nozzle 71 is preferably connected to a source of cleaning agent via at least one supply line 72. The at least one nozzle 71 is preferably fluid, preferably cleaning agent, for example pigmentless pressure fluid, designed to spray onto the at least one contact element 64, preferably along the guide path of the at least one contact element 64 in front of the at least one pressure element 66 and / or preferably in front of the at least one contact area. For example, especially if the at least one distance unit 63 has an inclination to a horizontal plane, preferably so that the at least one deflection means 69 has an inclination with its longitudinal axis to the horizontal plane, a first part of nozzles 71 of the at least two nozzles 71 can be controlled in each case, which is positioned higher than a second part of nozzles 71 of the at least two nozzles 71. For example, the at least one supply line 72 is then designed to transport cleaning agent at least to that part of nozzles 71 which is positioned higher than the respective at least one further part of nozzles 71. This uses the gravity of the cleaning agent in an advantageous manner. The cleaning agent is then preferably distributed independently between all nozzles 71.

The at least one contact element 64 is preferably dry when it is arranged on the at least one reservoir 67. The at least one contact element 64 is preferably moistened and / or converted into a damp or wet state by the spraying of cleaning agent from the at least one nozzle 71. For example, the cleaning agent is designed as an ink that does not contain any pigments. For example, in an alternative embodiment, a wet contact element 64 can be used and / or used, which already when it is arranged on the at least one reservoir 67 is formed moist or wet, for example soaked with cleaning agent. For example, in a further alternative embodiment, the contact element 64 is dry when it comes into direct contact with the at least one print head 08. Preferably, the contact element 64 is not sprayed with cleaning agent through the at least one nozzle 71 Cleaning step, a dry contact is produced between the at least one wiper 64 and the at least one print head 08.

The at least one contact element 63 cleans the at least one print head 08, in particular its exit surface 09 and / or the at least one contact surface 11, preferably by direct contact. For this purpose, the at least one removal unit 63 is preferably moved into the at least one deployment position. The at least one nozzle bar 04 is preferably lowered onto the at least one contact element 64 and is therefore preferably arranged in the second maintenance position. The removal unit 63 preferably has a movement relative to the at least one print head 08. The at least one removal unit 63 is preferably moved in the cleaning direction G, for example alternatively against the cleaning direction G. The at least one contact element 64 preferably comes into contact one after the other with the at least two print heads 08 arranged in a row.For example, the at least one contact element 64 wipes the at least one exit surface 09, preferably the at least two exit surfaces 09, and / or the at least one contact surface 11 , preferably the at least two contact surfaces 11, from. The surface of the at least one contact element 64 is preferably changed during the movement of the at least one removal unit 63 in or against the cleaning direction G. In this case, the contact element 64 is preferably unwound and / or wound up. Thus, with each forward movement in or against the cleaning direction G, another area of the occurs Contact element 64 in direct contact with the at least one print head 08. The change in the surface of the at least one contact element 64 is preferably caused by the at least one clock generator 78 and / or by the at least one tap element 77. For example, the at least one contact element 64 is designed to clean the at least one print head 08 only when moving in the cleaning direction G. For example, alternatively, the at least one contact element 64 is designed to clean the at least one print head 08 when moving in the cleaning direction G and when moving counter to the cleaning direction G.

The at least one printing unit 01 preferably comprises the at least one cleaning device 18 and the at least one cleaning device 61. The at least one cleaning device 18 and the at least one cleaning device 61 can preferably be moved independently of one another.

The at least one print head 08 of the at least one nozzle bar 04, preferably the at least one print head 08 of the at least one nozzle bar 04 arranged in the at least one maintenance position, is optionally in contact with the at least one cleaning device 18 and / or in contact with the at least one cleaning device 61 formed kicking. The at least one cleaning device 18 and / or the at least one cleaning device 61 preferably comes into contact with the at least one print head 08. Preferably, additionally or alternatively, the at least one cleaning device 18 and / or the at least one cleaning device 61 are at least temporarily in the area between the at least one nozzle bar 04 and the transport path from the at least one printing substrate 03. Preferably, additionally or alternatively, the at least one cleaning device 18 and / or the at least one cleaning device 61 are optionally moved into the area between the at least one nozzle bar 04 and the transport path of the at least one printing substrate 03. Further Preferably, the at least one cleaning device 18 and / or the at least one cleaning device 61 are moved independently of one another into the area between the at least one nozzle bar 04 and the transport path of the printing substrate 03. Preferably, additionally or alternatively, the at least one cleaning device 18 and / or the at least one cleaning device 61 are optionally arranged in the area between the at least one nozzle bar 04 and the transport path of printing substrate 03.

In a first arrangement of the optional arrangement, the at least one cleaning device 18, preferably the at least one cleaning element 31, is preferably arranged within the area between the at least one nozzle bar 04 and the transport path of printing substrate 03. The at least one cleaning device 61, preferably at least one removal unit 63, is then preferably arranged outside the area between the at least one nozzle bar 04 and the transport path of printing substrate 03. The at least one nozzle bar 04 is preferably arranged in the at least one maintenance position, preferably in the first maintenance position or, for example, in the third maintenance position. In the first arrangement, the at least one cleaning device 18 is preferably designed to clean the at least one print head 08 or, for example, to seal the at least one print head 08 by means of the at least one sealing element 56. In the first arrangement, the at least one removal unit 63 is preferably arranged in the at least one storage position.

Preferably additionally or alternatively, in a second arrangement of the optional arrangement, the at least one cleaning device 61, preferably the at least one removal unit 63, is arranged within the area between the at least one nozzle bar 04 and the transport path of printing substrate 03. Then preferably the at least one cleaning device 18, preferably at least the at least one cleaning element 31, is outside the area between the at least a nozzle bar 04 and the transport path of printing substrate 03 are arranged.

The at least one nozzle bar 04 is preferably arranged in the at least one maintenance position, preferably in the second maintenance position. In the second arrangement, the at least one cleaning device 61, preferably the at least one removal unit 63, is preferably designed to clean the at least one print head 08. In the second arrangement, the at least one cleaning device 18 is preferably arranged in the at least one storage position. In the second arrangement, the at least one cleaning element 31 is preferably arranged in the at least one storage position.

Preferably, additionally or alternatively, in a third arrangement of the optional arrangement, both the at least one cleaning device 18, preferably at least the at least one cleaning element 31, and the at least one cleaning device 61, preferably at least one removal unit 63, are outside the area between the at least a nozzle bar 04 and the transport path of printing substrate 03 are arranged. In the third arrangement, the at least one cleaning device 18 is preferably arranged in the at least one storage position. In the third arrangement, the at least one cleaning element 31 is preferably arranged in the at least one storage position. In the third arrangement, the at least one removal unit 63 is preferably arranged in the at least one storage position. The at least one nozzle bar 04 is preferably arranged in the third arrangement in the printing position.

Further preferably, the at least one nozzle bar 04 is first moved from the at least one printing position into the at least one rest position. The at least one nozzle bar 04 is then preferably moved from the at least one rest position into the at least one maintenance position. The at least one cleaning device 18 and / or the at least one cleaning device 61 in the area between the at least one nozzle bar 04 and the transport path are preferred proceed when the at least one nozzle bar 04 is arranged in the at least one rest position. Preferably, additionally or alternatively, the at least one nozzle bar 04 is optionally lowered onto the at least one cleaning device 18 or onto the at least one cleaning device 61. The at least one nozzle bar 04 is preferably arranged in the at least one maintenance position at least as a result of the lowering.

The at least one cleaning device 18 and / or the at least one cleaning device 61 preferably clean the at least one print head 08 at least temporarily.

In a preferred embodiment, the at least one sealing element 56, preferably the at least two sealing elements 56, and / or the at least one cleaning device 18 and / or the at least one cleaning device 61 is optionally arranged in contact with the at least one nozzle bar 04. Preferably, the at least one print head 08 of the at least one nozzle bar 04 is optionally in contact with the at least one cleaning device 18 and / or in contact with the at least one cleaning device 61 and / or in contact with the at least one sealing element 56, preferably the at least two sealing elements 56 , stepping trained and / or comes into contact. Preferably, the at least one print head 08 of the at least one nozzle bar 04 arranged in the at least one maintenance position is optionally in contact with the at least one cleaning device 18 and / or in contact with the at least one cleaning device 61 and / or in contact with the at least one sealing element 56, preferably the at least two sealing elements 56, formed so as to step and / or come into contact. The at least one cleaning device 18 is preferably designed to be movable and / or movable along the at least one guide element 53 and / or the at least one removal unit 63 is preferably designed to be movable and / or movable along the at least one guide element 62. Preferably, the at least one print head 08 is optionally by the at least one cleaning device 18 is cleaned and / or cleaned by the at least one cleaning device 61 or preserved and / or sealed against the surroundings of the print head 08 by the at least one sealing element 56, preferably the at least two sealing elements 56. Preferably, the at least one cleaning device 18 and / or the at least one cleaning device 61 optionally cleans the at least one print head 08, preferably the at least two print heads 08, more preferably the at least two print heads 08 of a row, the at least one nozzle bar 04, preferably the at least one nozzle bar 04 of the at least four nozzle bars 04.

The expression “optional” preferably describes above and below that there are at least two operating states to be distinguished from one another, for example at least three operating states. The at least two operating states can preferably be assumed independently of one another as a function of operating specifications or other conditions. If a first element and / or a second element come into contact with a third element, this preferably describes that, depending on operating specifications or other conditions, either the first element or the second element or both elements come into contact with the third element. For this purpose, the machine has the first element and the second element and the third element.

The at least one cleaning device 18 is preferably designed to come into optional contact with the at least one print head 08 and / or comes into contact when the at least one nozzle bar 04 has previously been in a printing operating state for at least one hour, preferably for at least two hours and / or if the at least one nozzle bar 04 has or will have a non-pressing operating state before or afterwards for at least one hour, preferably for at least two hours. The at least one cleaning device 18 is preferably optionally the at least one print head 08 designed to clean and / or optionally clean it if the at least one nozzle bar 04 has previously been in a printing operating state for at least one hour, preferably for at least two hours, and / or if the at least one nozzle bar 04 has been in a printing operating state before or afterwards for at least one hour has or will have a non-oppressive operating state for at least two hours. The at least one cleaning device 18 is preferably optionally arranged in the area between the at least one nozzle bar 04 and the transport path of printing material 03 if the at least one nozzle bar 04 has previously been in a printing operating state for at least one hour, preferably for at least two hours and / or if the at least one nozzle bar 04 has or will have a non-pressing operating state before or afterwards for at least one hour, preferably for at least two hours.

The at least one cleaning device 61 is preferably designed to come into optional contact with the at least one print head 08 and / or comes into contact and / or preferably cleans it and / or is preferably optionally in the area between the at least one nozzle bar 04 and the transport path of printing substrate 03 if the at least one nozzle bar 04 has previously had a printing operating state, i.e. transferred printing fluid to at least one printing substrate 03, for at least six hours, preferably at least eight hours, and / or if the at least one nozzle bar 04 was previously or afterwards for has or will have a non-oppressive operating state for at least four hours, preferably at least five hours, more preferably at least six hours. Additionally or alternatively, if the at least one nozzle bar 04 has pressure fluid which has a viscosity, preferably a dynamic viscosity, of at least 3 mPa * s (three millipascal seconds), preferably at least 4.5 mPa * s (four point five millipascal seconds) and / or which has a viscosity of a maximum of 6 mPa * s (six millipascal seconds), preferably a maximum of 5.5 mPa * s (five point five Millipascal second). Preferably, the preceding values of the viscosity relate to the viscosity between 20 ° C (twenty degrees Celsius) and 40 ° C (forty degrees Celsius), preferably of at least 25 ° C (twenty-five degrees Celsius) and / or a maximum of 35 ° C (thirty-five) Degrees Celsius), and / or were preferably determined in accordance with DIN EN ISO 2884-1: 2006-09. Additionally or alternatively, if the at least one nozzle bar 04 has printing fluid which has a pigment content of the printing fluid of at least 1%, preferably of at least 2%, more preferably of at least 3%, more preferably of at least 4%, and / or which preferably has a Pigment content of the printing fluid of a maximum of 18%, preferably of a maximum of 14%, more preferably of a maximum of 10%, more preferably of a maximum of 7%. Additionally or alternatively, if the at least one printing material 03 has, which is in the form of paper and / or cardboard and / or corrugated cardboard and / or cardboard, for example because the processing thereof places a particular load on the printing machine. Additionally or alternatively, if the at least one printing material 03 is designed as paper and / or cardboard and / or corrugated cardboard and / or cardboard, for example because the processing thereof places a particular load on the printing machine. Additionally or alternatively, if the at least one printing substrate 03 has a pigment coating of at least 5%, preferably at least 8%, more preferably at least 10%, of the total weight of the at least one printing substrate 03 and / or if the at least one printing substrate 03 has a pigment coating of a maximum of 30 %, preferably a maximum of 25%, more preferably a maximum of 20%, of the total weight of the at least one printing substrate 03. Additionally or alternatively, if the printing fluid is designed for packaging printing and / or for printing a packaging material.

The at least one sealing element 56, preferably the at least two sealing elements 56, is preferably formed and / or comes into contact with the at least one print head 08, preferably the at least two print heads 08, more preferably the at least four print heads 08, if the at least one nozzle bar 04 for at least thirty minutes, preferably for at least sixty minutes, one has non-oppressive operating state. The at least one sealing element 56 preferably comes into optional contact with the at least one print head 08 during the at least thirty minutes of the non-pressing operating state, preferably before or after the at least one cleaning device 18 and / or before or after the at least one cleaning device 61.

For example, additionally or alternatively, the at least one contact surface 11 is cleaned independently of the at least one exit surface 09. For example, the at least one contact surface 11 is cleaned by at least one further, second cleaning head, which differs from the cleaning element 31 described above, preferably designed as a first cleaning head 31, for example in the type of cleaning of the cleaning device 18 to be carried out and / or for the exclusive cleaning of the at least a contact surface 11 is formed. For example, the at least one second cleaning head is arranged in the at least one cleaning unit 26 in addition or as an alternative to the first cleaning head 31. For example, the at least one second cleaning head can be removed or inserted from the at least one cleaning unit 26. The at least one second cleaning head is preferably fastened in the at least one cleaning unit 26 by a closure, preferably a plug-in system. In particular, the first cleaning head 31 arranged in the at least one cleaning unit 26 can thus be exchanged and / or exchanged for the second cleaning head or vice versa at least temporarily, for example during intensive cleaning of the at least one contact surface 11.

List of reference symbols

01 printing unit, non-impact printing unit, inkjet printing unit 02 substrate guide element 03 substrate 04 nozzle bar 05 -

06 Positioning guide 07 Positioning gap 08 Print head, inkjet print head 09 Exit surface 10

11 Contact surface, spacer surface

12th

13 Feed device, nozzle, cleaning nozzle

14 feed element

15 -

16 outlet element, limiting element

17 Outlet opening, recess

18 cleaning device

19 Guide system (18) 0 1 cleaning drive 2 traverse, collecting tray 3 support device, first, positioning aid 4 support device, second, cleaning aid 5 - 6 cleaning unit (18) 7 carrier Mounting element Power element - cleaning element, cleaning head, first (18) sliding point, sliding surface ramp, first, entrance ramp, second, exit ramp - guide device, guide surface cleaning area fluid supply, fluid supply opening fluid discharge opening, first, fluid discharge - fluid discharge opening, second, fluid suction connection element outlet element, opening element cleaning guide - positioning bracket Opening angle, discharge angle, suction angle - edge of wiper guide element (18) cross member, fastening (18) - sealing element 57 edition

58 -

59 -

60 -

61 Cleaning device, wiping device

62 guide element (61)

63 Distance unit, wiping unit (61)

64 contact element, wiping element, wiping cloth (61)

65 -

66 Pressure element, pressure roller

67 Supply, unwinder

68 Storage, take-up device

69 deflection means

70 -

71 nozzle (63)

72 feed line

73 line, drive line

74 housing

75 -

76 carriers

77 pick-off element

78 clock generator

79 blocking element

80 -

81 swivel element (61) x x direction y y direction z z direction T direction of transport

A cross direction

L outlet direction

G Cleaning direction, direction, horizontal

Claims

Expectations

1. Printing machine, the printing machine comprising at least one printing unit (01) with at least four nozzle bars (04) each with at least one print head (08), at least one nozzle bar (04) of the at least four nozzle bars (04) at least one print head (08) with at least one exit surface (09), the at least one printing unit (01) comprising at least one cleaning device (18), the at least one cleaning device (18) comprising at least one cleaning element (31) with at least one fluid supply opening (38), the at least one cleaning device (18) has at least one storage position and at least one use position, characterized in that the at least one cleaning device (18) in the at least one storage position along a transport direction (T) of printing material (03) before or after an area between the at least a nozzle bar (04) and the transport path of printing material (03) is arranged, wherein the Tran sport direction (T) is determined at the position of the transport path of printing material (03) below the at least one nozzle bar (04).

2. Printing machine according to claim 1, characterized in that the at least one fluid supply opening (38) of the at least one cleaning element (31) of the at least one cleaning device (18) arranged in the storage position to at least one opening of the at least one exit surface (09) of the at least one The print head (08) has a relative distance in the x-direction and / or in the transport direction (T) that the relative distance of the at least one fluid supply opening (38) of the at least one cleaning element (31) of the at least one cleaning device (18) arranged in the storage position to the at least one opening of the at least one exit surface (09) of the at least one print head (08) at least twice as large as one Expansion of the at least one cleaning device (18) in the transport direction (T).

3. Printing machine according to claim 1 and / or 2, characterized in that the at least one cleaning device (18) is arranged in the at least one use position within the area between the at least one nozzle bar (04) and the transport path of printing material (03).

4. Printing machine according to claim 2 and / or 3, characterized in that the at least one fluid supply opening (38) of the at least one cleaning element (31) of the at least one cleaning device (18) arranged in the use position to the at least one opening of the at least one exit surface ( 09) of the at least one print head (08) has a relative distance in the x-direction and / or in the transport direction (T) that the relative distance of the at least one fluid supply opening (38) of the at least one cleaning element (31) of the at least one in the use position arranged cleaning device (18) to the at least one opening of the at least one exit surface (09) of the at least one print head (08) is at most once as large as the extension of the at least one cleaning device (18) in the transport direction (T).

5. Printing machine according to claim 1 and / or 2 and / or 3 and / or 4, characterized in that the at least one cleaning device (18) has at least one guide system (19), that the at least one guide system (19) has at least one guide element ( 53) includes.

6. Printing machine according to claim 5, characterized in that the at least one storage position and the at least one use position are arranged along the at least one guide element (53) that the at least one Storage position and the at least one use position are spaced apart from one another by a distance greater than zero.

7. Printing machine according to claim 5 and / or 6, characterized in that the at least one guide element (53) is designed as a linear guide and / or rail.

8. Printing machine according to claim 5 and / or 6 and / or 7, characterized in that the at least one guide element (53) has at least one guide path, that the guide path is arranged along the at least one guide element (53) in a plane whose normal vector corresponds to a transverse direction (A) and / or a y-direction, and / or that the guide path along the at least one guide element (53) within the plane has a larger horizontal component than its vertical component.

9. Printing machine according to claim 5 and / or 6 and / or 7 and / or 8, characterized in that the at least one cleaning device (18) is at a distance from the at least one guide element (53) of the at least one guide system (19) is constant.

10. Printing machine according to claim 1 and / or 2 and / or 3 and / or 4 and / or 5 and / or 6 and / or 7 and / or 8 and / or 9, characterized in that at least one nozzle bar (04) of the has at least four nozzle bars (04) at least one printing position and at least one maintenance position.

11. Printing machine according to claim 10, characterized in that the at least one nozzle bar (04) is optionally arranged in the printing position or in the at least one maintenance position.

12. Printing machine according to claim 10 and / or 11, characterized in that the at least one maintenance position is arranged in the vertical direction above the printing position.

13. Printing machine according to claim 10 and / or 11 and / or 12, characterized in that a distance of the at least one print head (08) of the nozzle bar (04) arranged in the at least one maintenance position from the transport path of printing material (03) is greater than in the printing position.

14. Printing machine according to claim 13, characterized in that the distance is directed in a vertical direction and / or in a z-direction.

15. Printing machine according to claim 10 and / or 11 and / or 12 and / or 13 and / or 14, characterized in that the at least one nozzle bar (04) is arranged in a printing operating state of the printing machine in the printing position.

16. Printing machine according to claim 10 and / or 11 and / or 12 and / or 13 and / or 14 and / or 15, characterized in that the at least one exit surface (09) of a print head (08) arranged in the printing position is different from the one provided The transport path for at least one printing substrate (03) and / or of at least one printing substrate (03) and / or of a printing substrate guide element (02) assigned to the respective nozzle bar (04) is at a distance of at most 5 mm (five millimeters) and / or which is at least 0.5 mm (zero point five millimeters).

17. Printing machine according to claim 10 and / or 11 and / or 12 and / or 13 and / or 14 and / or 15 and / or 16, characterized in that the at least one maintenance position, the cleaning position, a positioning of the at least one Nozzle bar (04) during a contactless cleaning of the at least one exit surface (09) of the at least one print head (08) of the at least one nozzle bar (04) corresponds to the at least four nozzle bars (04).

18. Printing machine according to claim 10 and / or 11 and / or 12 and / or 13 and / or 14 and / or 15 and / or 16 and / or 17, characterized in that the at least one nozzle bar (04) of the at least four nozzle bars (04) has at least one rest position that a distance of the at least one print head (08) of the nozzle bar (04) arranged in the at least one rest position from the transport path of printing material (03) is greater than in the printing position and in the at least one maintenance position and / or that the rest position is arranged in the vertical direction above the printing position.

19. Printing machine according to claim 1 and / or 2 and / or 3 and / or 4 and / or 5 and / or 6 and / or 7 and / or 8 and / or 9 and / or 10 and / or 11 and / or 12 and / or 13 and / or 14 and / or 15 and / or 16 and / or 17 and / or 18, characterized in that the at least one cleaning device (18) with the at least one print head (08) is ejected via at least one cleaning fluid through which at least one fluid supply opening (38) is designed to come into indirect contact at least at times.

20. Printing machine according to claim 1 and / or 2 and / or 3 and / or 4 and / or 5 and / or 6 and / or 7 and / or 8 and / or 9 and / or 10 and / or 11 and / or 12 and / or 13 and / or 14 and / or 15 and / or 16 and / or 17 and / or 18 and / or 19, characterized in that the at least one cleaning element (31) has at least one storage position and at least one insert position.

21. Printing machine according to claim 20, characterized in that the at least one cleaning element (31) in the at least one storage position along a longest side of the at least one nozzle bar (04) and / or along a y-direction outside the area between the at least one nozzle bar (04) and a transport path for the printing material (03), and / or that the at least one fluid supply opening (38) of the at least one cleaning element (31) arranged in the storage position to the at least one opening of the at least one exit surface (09) of the at least one print head (08) has a relative distance in the y-direction and / or in the transverse direction A, that the relative distance of the at least one fluid supply opening (38) of the at least one cleaning element (31) arranged in the storage position to the at least one opening of the at least one exit surface (09) of the at least one print head (08) at least twice as large as an extension in the transverse direction (A) of the at least an exit surface (09) of the at least one print head (08) of the at least one through the at least one cleaning device device (18) to be cleaned nozzle bar (04).

22. Printing machine according to claim 20 and / or 21, characterized in that the at least one cleaning element (31) is arranged in the at least one use position within the area between the at least one nozzle bar (04) and the transport path of the printing material (03), and / or that the at least one fluid supply opening (38) of the at least one cleaning element (31) arranged in the use position is at a relative distance in the y direction and / or from the at least one opening of the at least one exit surface (09) of the at least one print head (08) in transverse direction A that the relative distance of the at least one fluid supply opening (38) of the at least one cleaning element (31) arranged in the use position to the at least one opening of the at least one exit surface (09) of the at least one print head (08) is at most once as large such as an expansion in the transverse direction (A) of the at least one exit surface (09) of the at least one Druckko pfes (08) of the at least one through the at least one cleaning device (18) cleaning nozzle bar (04).

23. Printing machine according to claim 1 and / or 2 and / or 3 and / or 4 and / or 5 and / or 6 and / or 7 and / or 8 and / or 9 and / or 10 and / or 11 and / or 12 and / or 13 and / or 14 and / or 15 and / or 16 and / or 17 and / or 18 and / or 19 and / or 20 and / or 21 and / or 22, characterized in that the printing unit (01) has at least two cleaning devices (18).

24. Printing machine according to claim 23, characterized in that at least two nozzle bars (04) of the at least four nozzle bars (04) each come into contact with at least one cleaning device (18) of the at least two cleaning devices (18).

25. Printing machine according to claim 23 and / or 24, characterized in that the at least two cleaning devices (18) are jointly connected to the at least one guide system (19) and / or that the at least two cleaning devices (18) simultaneously the at least one storage position or which have at least one use position.

26. Printing machine according to claim 23 and / or 24 and / or 25, characterized in that the at least two cleaning devices (18) have at least one common guide system (19) and / or that the at least two cleaning devices (18) have at least one common guide element ( 53).

27. Printing machine according to claim 23 and / or 24 and / or 25 and / or 26, characterized in that the at least two cleaning devices (18) have an angle of inclination with respect to a z-direction, which is an inclination with respect to the z-direction of the nozzle bar ( 04) and / or at least one Print head (08) of the nozzle bar (04) corresponds.

28. Printing machine according to claim 23 and / or 24 and / or 25 and / or 26 and / or 27, characterized in that the at least two cleaning devices (18) have at least two common guide systems (19) that each have at least one of the at least two Guide systems (19) is arranged in the transverse direction (A) and / or in the y-direction in front of the at least one nozzle bar (04) and / or that in each case at least one of the at least two guide systems (19) in the transverse direction (A) and / or in y -Direction according to which at least one nozzle bar (04) is arranged.

29. Printing machine according to claim 1 and / or 2 and / or 3 and / or 4 and / or 5 and / or 6 and / or 7 and / or 8 and / or 9 and / or 10 and / or 11 and / or 12 and / or 13 and / or 14 and / or 15 and / or 16 and / or 17 and / or 18 and / or 19 and / or 20 and / or 21 and / or 22 and / or 23 and / or 24 and / or 25 and / or 26 and / or 27 and / or 28, characterized in that the at least one printing unit (01) comprises at least one cleaning device (61), that the at least one cleaning device (61) has at least one removal unit (63) with at least comprises a contact element (64).

30. Printing machine according to claim 29, characterized in that the at least one cleaning device (61) is designed to come into direct contact with the at least one print head (08).

31. Printing machine according to claim 29 and / or 30, characterized in that the at least one contact element (64) is designed as a wiper (64).

32. Printing machine according to claim 29 and / or 30 and / or 31, characterized in that the at least one removal unit (63) has at least one Has storage position and at least one use position.

33. Printing machine according to claim 32, characterized in that the at least one removal unit (63) is arranged in the at least one use position within the area between the at least one nozzle bar (04) of the at least four nozzle bars (04) and the transport path of a printing material (03) and / or that the at least one contact element (64) of the at least one distance unit (63) arranged in the deployment position is at a relative distance in the y-direction from the at least one opening of the at least one exit surface (09) of the at least one print head (08) and / or in the transverse direction (A) that the relative distance of the at least one contact element (64) of the at least one distance unit (63) arranged in the use position to the at least one opening of the at least one exit surface (09) of the at least one print head (08 ) a maximum of once as large as an extension in the transverse direction (A) of the at least one exit surface (09) of the to at least one print head (08) of the at least one nozzle bar (04) to be cleaned by the at least one removal unit (63).

34. Printing machine according to claim 32 and / or 33, characterized in that the at least one removal unit (63) in the at least one storage position along a longest side of the at least one nozzle bar (04) and / or along a y-direction outside the area between the at least one nozzle bar (04) and the transport path of the printing material (03) is arranged, and / or that the at least one contact element (64) of the at least one distance unit (63) arranged in the storage position to the at least one opening of the at least one exit surface ( 09) of the at least one print head (08) has a relative distance in the y-direction and / or in the transverse direction (A) that the relative distance of the at least one contact element (64) of the at least one distance unit (63) arranged in the storage position to the at least an opening of the at least one exit surface (09) of the at least one print head (08) at most once as large as an extension in the transverse direction (A) of the at least one exit surface (09) of the at least one print head (08) of the at least one through the at least one removal unit (63) to be cleaned is the nozzle bar (04).

35. Printing machine according to claim 32 and / or 33 and / or 34, characterized in that the at least one cleaning device (61) has at least one guide element (62), that the at least one removal unit (63) along the at least one guide element (62) is arranged along a longest side of the at least one nozzle bar (04) and / or along a y-direction in the at least one storage position or in the at least one use position.

36. Printing machine according to claim 29 and / or 30 and / or 31 and / or 32 and / or 33 and / or 34 and / or 35, characterized in that the at least one cleaning device (61) comprises at least two removal units (63), that the at least two distance units (63) are arranged together on at least one carrier (76), that the at least two distance units (63) have an angle of inclination with respect to a z-direction, which is an inclination with respect to the z-direction of the associated nozzle bar (04) and / or at least one print head (08) of the associated nozzle bar (04).

37. Printing machine according to claim 29 and / or 30 and / or 31 and / or 32 and / or 33 and / or 34 and / or 35 and / or 36, characterized in that optionally the at least one cleaning device (18) or the at least a cleaning device (61) are arranged in the area between the at least one nozzle bar (04) and the transport path for printing material (03), and / or that optionally the at least one cleaning device (18) or the at least one cleaning device (61) is designed to come into contact with the at least one print head (08).

38. Printing machine according to claim 10 and / or 11 and / or 12 and / or 13 and / or 14 and / or 15 and / or 16 and / or 17 and / or 18 and / or 19 and / or 20 and / or 21 and / or 22 and / or 23 and / or 24 and / or 25 and / or 26 and / or 27 and / or 28 and / or 29 and / or 30 and / or 31 and / or 32 and / or 33 and / or 34 and / or 35 and / or 36 and / or 37, characterized in that the at least one maintenance position is designed as a first maintenance position, that at least one second maintenance position is designed as a second maintenance position.

39. Printing machine according to claim 38, characterized in that the at least one nozzle bar (04) is arranged in the second maintenance position upon contact with the at least one cleaning device (61) and / or that the first maintenance position is a different position from the second maintenance position is at least one nozzle bar (04).

40. Printing machine according to claim 37 and / or 38 and / or 39, characterized in that in a first arrangement of the optional arrangement the at least one cleaning device (18) within the area between the at least one nozzle bar (04) and the transport path of printing material ( 03) is arranged and that at least the at least one removal unit (63) is arranged outside the area between the at least one nozzle bar (04) and the transport path of printing material (03), and / or that in a second arrangement of the optional arrangement the at least one Removal unit (63) is arranged within the area between the at least one nozzle bar (04) and the transport path of printing material (03) and that the at least one cleaning device (18) is outside the area between the at least one Nozzle bar (04) and the transport path of printing material (03) is arranged, and / or that in a third arrangement of the optional arrangement both the at least one cleaning device (18) and at least one removal unit (63) outside the area between the at least a nozzle bar (04) and the transport path of printing material (03) are arranged.

41. Printing machine according to claim 38 and / or 39 and / or 40, characterized in that the at least one nozzle bar (04) in the first maintenance position has a first distance from a transport path of printing material (03), that the at least one nozzle bar (04 ) in the second maintenance position has a second distance to the transport path, that the second distance of the second maintenance position of the nozzle bar (04) is less than in the first maintenance position and / or that the distance of the at least one print head (08) in the second maintenance position arranged nozzle bar (04) from the transport path of printing material (03) is larger than in the printing position.

42. Printing machine according to claim 37 and / or 38 and / or 39 and / or 40 and / or 41, characterized in that the at least one cleaning device (18) is designed to come into optional contact with the at least one print head (08), if the at least one nozzle bar (04) has previously been in a printing operating state for at least one hour and / or if the at least one nozzle bar (04) has or will be in a non-pressing operating state for at least one hour before or afterwards, and / or that the at least one cleaning device (18) is optionally arranged in the area between the at least one nozzle bar (04) and the transport path of printing material (03) if the at least one nozzle bar (04) has previously been in a printing operating state for at least one hour and / or if the at least one nozzle bar (04) before or afterwards for has been or will be in a non-oppressive operating state for at least one hour.

43. Printing machine according to claim 37 and / or 38 and / or 39 and / or 40 and / or 41 and / or 42, characterized in that the at least one cleaning device (61) is in optional contact with the at least one print head (08) is formed when the at least one nozzle bar (04) has previously exhibited a printing operating state for at least six hours and / or if the at least one nozzle bar (04) has or will have a non-printing operating state before or after for at least four hours and / or if the at least one nozzle bar (04)

Having pressure fluid which has a viscosity of at least 3 mPa * s (three millipascal seconds) and / or which has a maximum viscosity

6 mPa * s (six millipascal seconds) and / or if the at least one nozzle bar (04) has pressure fluid which has a pigment content of the pressure fluid of at least 1% and / or which has a pigment content of the pressure fluid of at most 18%, and / or if at least one printing material (03) is in the form of paper and / or cardboard and / or corrugated cardboard and / or cardboard, and / or if the at least one printing material (03) has a pigment coat of at least 5% of the total weight of the at least one printing material (03 ) and / or if the at least one printing material (03) has a pigment coating of a maximum of 30% of the total weight of the at least one printing material (03).

44. Printing machine according to claim 1 and / or 2 and / or 3 and / or 4 and / or 5 and / or 6 and / or 7 and / or 8 and / or 9 and / or 10 and / or 11 and / or 12 and / or 13 and / or 14 and / or 15 and / or 16 and / or 17 and / or 18 and / or 19 and / or 20 and / or 21 and / or 22 and / or 23 and / or 24 and / or 25 and / or 26 and / or 27 and / or 28 and / or 29 and / or 30 and / or 31 and / or 32 and / or 33 and / or 34 and / or 35 and / or 36 and / or 37 and / or 38 and / or 39 and / or 40 and / or 41 and / or 42 and / or 43, characterized in that a contact of the at least one print head (08) to the at least one cleaning device (18) corresponds to an indirect contact and / or that the contact of the at least one print head (08) to the at least one cleaning device (18) is a contactless cleaning corresponds to at least one exit surface (09) of the at least one print head (08).

45. Printing machine according to claim 1 and / or 2 and / or 3 and / or 4 and / or 5 and / or 6 and / or 7 and / or 8 and / or 9 and / or 10 and / or 11 and / or 12 and / or 13 and / or 14 and / or 15 and / or 16 and / or 17 and / or 18 and / or 19 and / or 20 and / or 21 and / or 22 and / or 23 and / or 24 and / or 25 and / or 26 and / or 27 and / or 28 and / or 29 and / or 30 and / or 31 and / or 32 and / or 33 and / or 34 and / or 35 and / or 36 and / or 37 and / or 38 and / or 39 and / or 40 and / or 41 and / or 42 and / or 43 and / or 44, characterized in that in each case at least one nozzle bar (04) of the at least four nozzle bars (04) of the at least one Printing unit (01) has cyan (C) or magenta (M) or yellow (Y) or black (K) as the color of a printing fluid.

46. Printing machine according to claim 1 and / or 2 and / or 3 and / or 4 and / or 5 and / or 6 and / or 7 and / or 8 and / or 9 and / or 10 and / or 11 and / or 12 and / or 13 and / or 14 and / or 15 and / or 16 and / or 17 and / or 18 and / or 19 and / or 20 and / or 21 and / or 22 and / or 23 and / or 24 and / or 25 and / or 26 and / or 27 and / or 28 and / or 29 and / or 30 and / or 31 and / or 32 and / or 33 and / or 34 and / or 35 and / or 36 and / or 37 and / or 38 and / or 39 and / or 40 and / or 41 and / or 42 and / or 43 and / or 44 and / or 45, characterized in that the Printing unit (01) has at least four cleaning devices (18) so that in each case one cleaning device (18) of the at least four cleaning devices (18) is designed to clean one nozzle bar (04) of the at least four nozzle bars (04).

47. Printing machine according to claim 1 and / or 2 and / or 3 and / or 4 and / or 5 and / or 6 and / or 7 and / or 8 and / or 9 and / or 10 and / or 11 and / or 12 and / or 13 and / or 14 and / or 15 and / or 16 and / or 17 and / or 18 and / or 19 and / or 20 and / or 21 and / or 22 and / or 23 and / or 24 and / or 25 and / or 26 and / or 27 and / or 28 and / or 29 and / or 30 and / or 31 and / or 32 and / or 33 and / or 34 and / or 35 and / or 36 and / or 37 and / or 38 and / or 39 and / or 40 and / or 41 and / or 42 and / or 43 and / or 44 and / or 45 and / or 46, characterized in that the printing unit (01) has at least one sealing element ( 56) includes.

48. Printing machine according to claim 47, characterized in that the at least one sealing element (56) is arranged in a third maintenance position, the depot position, in direct contact with the at least one nozzle bar (04).

49. Printing machine according to claim 48, characterized in that a third distance of the at least one nozzle bar (04) in the third maintenance position to the transport path of printing material (03) is different from a first distance of the at least one nozzle bar (04) in the first maintenance position Distance is that the third distance is less than the first distance and / or that the third distance of the at least one print head (08) of the nozzle bar (04) arranged in the at least one third maintenance position from the transport path of printing material (03) is greater than in the printing position.

50. Printing machine according to claim 47 and / or 48 and / or 49, characterized characterized in that the at least one cleaning device (18) comprises the at least one sealing element (56).

51. Printing machine according to claim 48 and / or 49 and / or 50, characterized in that the at least one nozzle bar (04) is arranged in the third maintenance position, the depot position, when the at least one cleaning device (18) is in the at least one use position is arranged and when the at least one cleaning element (31) is arranged in the storage position.

52. Printing machine according to claim 47 and / or 48 and / or 49 and / or 50 and / or 51, characterized in that the at least one sealing element (56) has at least two exit surfaces (09) of at least two print heads (08) of at least one row of print heads (08) of at least one nozzle bar (04) of the at least four nozzle bars (04) is sealingly designed.

53. Printing machine according to claim 47 and / or 48 and / or 49 and / or 50 and / or 51 and / or 52, characterized in that the at least one sealing element (56) in one direction relative to the at least two print heads (08) orthogonal to a longest side of the at least one nozzle bar (04) and / or parallel to the at least one transport path of the at least one printing material (03) is designed to be movable and / or movable.

54. Printing machine according to claim 47 and / or 48 and / or 49 and / or 50 and / or 51 and / or 52 and / or 53, characterized in that the at least one cleaning element (31) is arranged in the storage position when the at least one sealing element (56) in which at least temporarily direct contact with at least one print head (08) is arranged.

55. Printing machine according to claim 47 and / or 48 and / or 49 and / or 50 and / or 51 and / or 52 and / or 53 and / or 54, characterized in that the at least one cleaning device (18) is arranged in the use position is that the at least one nozzle bar (04) is optionally arranged at least in the first maintenance position or in the third maintenance position, that the at least one cleaning device (18) is designed to be at least partially cleaning the nozzle bar (04) arranged in the first maintenance position, that the at least one sealing element (56) is arranged in direct contact with the at least one print head (08) of the nozzle bar (04) arranged in the third maintenance position.

56. Printing machine according to claim 47 and / or 48 and / or 49 and / or 50 and / or 51 and / or 52 and / or 53 and / or 54 and / or 55, characterized in that the at least one print head (08) of the at least one arranged nozzle bar (04) is either in contact with the at least one cleaning device (18) or in contact with the at least one cleaning device (61) or in contact with the at least one sealing element (56).

57. Printing machine according to claim 56, characterized in that the at least one sealing element (56) is designed to come into optional contact with the at least one print head (08) when the at least one nozzle bar (04) has a non-pressing one for at least thirty minutes Has operating condition.

58. Printing machine according to claim 1 and / or 2 and / or 3 and / or 4 and / or 5 and / or 6 and / or 7 and / or 8 and / or 9 and / or 10 and / or 11 and / or 12 and / or 13 and / or 14 and / or 15 and / or 16 and / or 17 and / or 18 and / or 19 and / or 20 and / or 21 and / or 22 and / or 23 and / or 24 and / or 25 and / or 26 and / or 27 and / or 28 and / or 29 and / or 30 and / or 31 and / or 32 and / or 33 and / or 34 and / or 35 and / or 36 and / or 37 and / or 38 and / or 39 and / or 40 and / or 41 and / or 42 and / or 43 and / or 44 and / or 45 and / or 46 and / or 47 and / or 48 and / or 49 and / or 50 and / or 51 and / or 52 and / or 53 and / or 54 and / or 55 and / or 56 and / or 57, characterized in that an x direction corresponds to a direction along a shortest side of the respective nozzle bar (04) and / or that a y direction corresponds to a direction along a longest side of the respective nozzle bar (04) corresponds and / or that a z-direction is parallel to a normal vector of a plane, which plane is spanned by the x-direction and the y-direction, and / or that the z-direction is a vertical direction, and / or that a Transverse direction (A) is a direction along a longest side of the at least one nozzle bar (04) and / or that the transverse direction (A) is parallel to the y-direction and / or that the transverse direction htung (A) is parallel to a working width, and / or that a transport direction (T) is a direction provided for a printing operating state of the at least one printing unit (01) of the printing machine in which the printing material (03) in the event of its presence at each point of the transport path is transported and / or that the transport direction (T) is orthogonal to the transverse direction (A) and / or that the transport direction (T) is parallel to the x-direction in a location of the smallest distance of a relevant print head (08) to the Is the transport route.

59. Printing machine according to claim 1 and / or 2 and / or 3 and / or 4 and / or 5 and / or 6 and / or 7 and / or 8 and / or 9 and / or 10 and / or 11 and / or 12 and / or 13 and / or 14 and / or 15 and / or 16 and / or 17 and / or 18 and / or 19 and / or 20 and / or 21 and / or 22 and / or 23 and / or 24 and / or 25 and / or 26 and / or 27 and / or 28 and / or 29 and / or 30 and / or 31 and / or 32 and / or 33 and / or 34 and / or 35 and / or 36 and / or 37 and / or 38 and / or 39 and / or 40 and / or 41 and / or 42 and / or 43 and / or 44 and / or 45 and / or 46 and / or 47 and / or 48 and / or 49 and / or 50 and / or 51 and / or 52 and / or 53 and / or 54 and / or 55 and / or 56 and / or 57 and / or 58, characterized in that the longest side of the at least a nozzle bar (04) is that side of the at least one nozzle bar (04), along which side at least two print heads (08) are arranged in a row, and / or that the shortest side of the at least one nozzle bar (04) is orthogonal to its longest side is arranged and / or that only one print head (08) is arranged in each row along the shortest side of the at least one nozzle bar (04).

60. Printing machine according to claim 1 and / or 2 and / or 3 and / or 4 and / or 5 and / or 6 and / or 7 and / or 8 and / or 9 and / or 10 and / or 11 and / or 12 and / or 13 and / or 14 and / or 15 and / or 16 and / or 17 and / or 18 and / or 19 and / or 20 and / or 21 and / or 22 and / or 23 and / or 24 and / or 25 and / or 26 and / or 27 and / or 28 and / or 29 and / or 30 and / or 31 and / or 32 and / or 33 and / or 34 and / or 35 and / or 36 and / or 37 and / or 38 and / or 39 and / or 40 and / or 41 and / or 42 and / or 43 and / or 44 and / or 45 and / or 46 and / or 47 and / or 48 and / or 49 and / or 50 and / or 51 and / or 52 and / or 53 and / or 54 and / or 55 and / or 56 and / or 57 and / or 58 and / or 59, characterized in that the area between the at least one nozzle bar (04) and the transport path of printing material (03) is a spatial area which is the shortest distance between at least one exit surface (09) of the at least one print head (08) of the at least st has a nozzle bar (04) and the transport path, and / or that the area between the at least one nozzle bar (04) and the transport path of printing material (03) is a spatial area within at least two delimitation planes, the at least two delimitation planes perpendicular to one plane stand, which has at least one exit surface (09) of the at least one print head (08) of the at least one nozzle bar (04) of the at least four nozzle bars (04), and wherein the at least one nozzle bar (04) is delimited in the transport direction (T) of printing material (03) by one delimitation plane of the at least two delimitation planes.

61. A method for cleaning at least one nozzle bar (04) of at least one printing unit (01), wherein the at least printing unit (01) comprises at least four nozzle bars (04) each with at least one print head (08), at least one cleaning device (18) at least one Print head (08) cleans at least one nozzle bar (04) of the at least four nozzle bars (04) with at least one cleaning element (31) arranged in an operating position and having at least one fluid supply opening (38), characterized in that the at least one cleaning device (18) in at least a storage position along a transport direction (T) of printing material (03) is arranged before or after an area between the at least one nozzle bar (04) and the transport path of printing material (03), the transport direction (T) at the position of the transport path of printing material (03) is determined below the at least one nozzle bar (04).

62. The method according to claim 61, characterized in that at least one exit surface (09) of at least one print head (08) of at least one nozzle bar (04) of the at least four nozzle bars (04) is cleaned without contact by the at least one cleaning device (18).

63. The method according to claim 62, characterized in that the at least one fluid supply opening (38) of the at least one cleaning element (31) of the at least one cleaning device (18) arranged in the storage position to at least one opening of the at least one exit surface (09) of the at least one The print head (08) is arranged at a relative distance in the x direction and / or in the transport direction (T) that the relative distance of the at least a fluid supply opening (38) of the at least one cleaning element (31) of the at least one cleaning device (18) arranged in the storage position to the at least one opening of the at least one exit surface (09) of the at least one print head (08) at least twice as large as an extension of the is at least one cleaning device (18) in the transport direction (T).

64. The method according to claim 61 and / or 62 and / or 63, characterized in that the at least one cleaning device (18) along at least one guide element (53) of at least one guide system (19) from the at least one storage position to at least one use position or vice versa is moved.

65. The method according to claim 64, characterized in that the at least one cleaning device (18) is arranged in the at least one use position within the area between the at least one nozzle bar (04) and the transport path of the at least one printing material (03), and / or that the at least one fluid supply opening (38) of the at least one cleaning element (31) of the at least one cleaning device (18) arranged in the use position is at a relative distance from the at least one opening of the at least one exit surface (09) of the at least one print head (08) x-direction and / or in the transport direction (T) that the relative distance of the at least one fluid supply opening (38) of the at least one cleaning element (31) of the at least one cleaning device (18) arranged in the use position to the at least one opening of the at least an exit surface (09) of the at least one print head (08) at most ei n times as large as the extent of the at least one cleaning device (18) in the transport direction (T).

66. The method according to claim 64 and / or 65, characterized in that the at least one cleaning device (18) is moved along the at least one guide element (53) along a guide path in a plane with a larger horizontal component than a vertical component.

67. The method according to claim 61 and / or 62 and / or 63 and / or 64 and / or 65 and / or 66, characterized in that at least one nozzle bar (04) of the at least four nozzle bars (04) is optionally in a printing position or in at least one maintenance position is arranged.

68. The method according to claim 67, characterized in that the at least one nozzle bar (04) is moved in a direction with a larger vertical component and a smaller horizontal component from the printing position to the at least one maintenance position and / or from the at least one maintenance position to the printing position .

69. The method according to claim 67 and / or 68, characterized in that the at least one nozzle bar (04) is arranged in the at least one maintenance position in the vertical direction above the printing position.

70. The method according to claim 67 and / or 68 and / or 69, characterized in that at least one printing material (03) in a printing operating state by the at least one print head (08) of the at least one nozzle bar (04) arranged in the printing position of the at least four nozzle bars (04) is printed with pressure fluid.

71. The method according to claim 67 and / or 68 and / or 69 and / or 70, characterized in that the at least one nozzle bar (04) is first moved from the at least one printing position into at least one rest position that the at least one nozzle bar (04) is then moved from the at least one rest position into the at least one maintenance position.

72. The method according to claim 67 and / or 68 and / or 69 and / or 70 and / or 71, characterized in that the at least one maintenance position is designed as a first maintenance position, that at least one second maintenance position is designed as a second maintenance position.

73. The method according to claim 72, characterized in that the at least one nozzle bar (04) is positioned in the first maintenance position during the contactless cleaning of the at least one exit surface (09) of the at least one print head (08) of the at least one nozzle bar (04).

74. The method according to claim 61 and / or 62 and / or 63 and / or 64 and / or 65 and / or 66 and / or 67 and / or 68 and / or 69 and / or 70 and / or 71 and / or 72 and / or 73, characterized in that the at least one cleaning element (31) is in at least one storage position along a longest side of the at least one nozzle bar (04) and / or along a y-direction outside the area between the at least one nozzle bar (04) and the transport path of the printing material (03) is arranged, and / or that the at least one fluid supply opening (38) of the at least one cleaning element (31) arranged in the storage position to the at least one opening of the at least one exit surface (09) of the at least one print head ( 08) is arranged at a relative distance in the y-direction and / or in the transverse direction (A) that the relative distance of the at least one fluid supply opening (38) of the at least one cleaning element (31) arranged in the storage position increases the at least one opening of the at least one exit surface (09) of the at least one print head (08) at least twice as large as an extension in the transverse direction (A) of the at least one exit surface (09) of the at least one The print head (08) of the at least one nozzle bar (04) to be cleaned by the at least one cleaning device (18).

75. The method according to claim 61 and / or 62 and / or 63 and / or 64 and / or 65 and / or 66 and / or 67 and / or 68 and / or 69 and / or 70 and / or 71 and / or 72 and / or 73 and / or 74, characterized in that the at least cleaning element (31) is arranged in the use position within the area between the at least one nozzle bar (04) and a transport path for printing material (03), and / or that the at least a fluid supply opening (38) of the at least one cleaning element (31) arranged in the use position to the at least one opening of the at least one exit surface (09) of the at least one print head (08) at a relative distance in the y-direction and / or in the transverse direction (A ) is arranged that the relative distance of the at least one fluid supply opening (38) of the at least one cleaning element (31) arranged in the use position to the at least one opening of the at least one exit surface (09) of the at least one print head (08) at most once as large as an extension in the transverse direction (A) of the at least one exit surface (09) of the at least one print head (08) of the at least one nozzle bar (04) to be cleaned by the at least one cleaning device (18).

76. The method according to claim 64 and / or 65 and / or 66 and / or 67 and / or 68 and / or 69 and / or 70 and / or 71 and / or 72 and / or 73 and / or 74 and / or 75 , characterized in that the printing unit (01) has at least two cleaning devices (18), that the at least two cleaning devices (18) are jointly connected to the at least one guide system 19 and / or by the at least one guide system 19 together from the at least one use position in the at least one storage position or vice versa are moved.

77. The method according to claim 61 and / or 62 and / or 63 and / or 64 and / or 65 and / or 66 and / or 67 and / or 68 and / or 69 and / or 70 and / or 71 and / or 72 and / or 73 and / or 74 and / or 75 and / or 76, characterized in that the at least one print head (08) of the at least one nozzle bar (04) of the at least four nozzle bars (04) by at least one cleaning device (61) at least one removal unit (63) arranged in at least one operating position is cleaned with at least one contact element (64) designed as a wiper (64).

78. The method according to claim 77, characterized in that the at least one nozzle bar (04) is positioned in the second maintenance position upon contact with the at least one cleaning device (61).

79. The method according to claim 77 and / or 78, characterized in that the at least one removal unit (63) is arranged in the at least one use position within the area between the at least one nozzle bar (04) and the transport path of printing material (03), and / or that the at least one contact element (64) of the at least one distance unit (63) arranged in the use position to the at least one opening of the at least one exit surface (09) of the at least one print head (08) at a relative distance in the y-direction and / or is arranged in the transverse direction (A) that the relative distance of the at least one contact element (64) of the at least one distance unit (63) arranged in the use position to the at least one opening of the at least one exit surface (09) of the at least one print head (08) a maximum of once as large as an extension in the transverse direction (A) of the at least one exit surface (09) of the at least one Druckko pfes (08) of the at least one nozzle bar (04) to be cleaned by the at least one removal unit (63).

80. The method according to claim 77 and / or 78 and / or 79, characterized in that the at least one removal unit (63) is in at least one storage position along a longest side of the at least one nozzle bar (04) and / or along a y-direction outside of the area between the at least one nozzle bar (04) and the transport path of the printing material (03), and / or that the at least one removal unit (63) is in at least one storage position along a longest side of the at least one nozzle bar (04) and / or is arranged along a y-direction outside the area between the at least one nozzle bar (04) and the transport path of the printing material (03), and / or that the at least one contact element (64) of the at least one removal unit (63) arranged in the storage position the at least one opening of the at least one exit surface (09) of the at least one print head (08) at a relative distance in the y-direction g and / or is arranged in the transverse direction (A) that the relative distance of the at least one contact element (64) of the at least one distance unit (63) arranged in the storage position to the at least one opening of the at least one exit surface (09) of the at least one print head (08) is at most once as large as an extension in the transverse direction (A) of the at least one exit surface (09) of the at least one print head (08) of the at least one nozzle bar (04) to be cleaned by the at least one removal unit (63).

81. The method according to claim 77 and / or 78 and / or 79 and / or 80, characterized in that the at least one removal unit (63) along at least one guide element (62) along a longest side of the at least one nozzle bar (04) and / or is moved along a y-direction.

82. The method according to claim 77 and / or 78 and / or 79 and / or 80 and / or 81, characterized in that the at least one cleaning device (61) comprises at least two removal units (63) that in each case one removal unit (63) comes into contact with at least one row of the print heads (08) and / or that all removal units (63) come into contact with one row of the print heads (08) at the same time .

83. The method according to claim 77 and / or 78 and / or 79 and / or 80 and / or 81 and / or 82, characterized in that optionally the at least one cleaning device (18) / or the at least one cleaning device (61) the at least a print head (08) of the at least one nozzle bar (04) which cleans at least four nozzle bars (04).

84. The method according to claim 77 and / or 78 and / or 79 and / or 80 and / or 81 and / or 82 and / or 83, characterized in that optionally the at least one cleaning device (18) or the at least one cleaning device (61 ) be moved into the area between the at least one nozzle bar (04) and the transport path for printing material (03).

85. The method according to claim 83 and / or 84, characterized in that the at least one cleaning device (18) optionally cleans the at least one print head (08) if the at least one nozzle bar (04) has previously been in a printing operating state for at least one hour and / or if the at least one nozzle bar (04) has or will have a non-pressing operating state before or afterwards for at least one hour.

86. The method according to claim 83 and / or 84 and / or 85, characterized in that the at least one cleaning device (61) comes into optional contact with the at least one print head (08) if the at least one nozzle bar (04) previously at least has been in a printing operating state for six hours and / or if the at least one nozzle bar (04) was previously or then has or will have a non-pressing operating state for at least four hours and / or if the at least one nozzle bar (04) has pressure fluid which has a viscosity of at least 3 mPa * s (three millipascal seconds) and / or which has a viscosity of has a maximum of 6 mPa * s (six millipascal seconds), and / or if the at least one nozzle bar (04) has pressure fluid which has a pigment content of the pressure fluid of at least 1% and / or which has a pigment content of the pressure fluid of at most 18%, and / or if at least one printing material (03) is in the form of paper and / or cardboard and / or corrugated cardboard and / or cardboard, and / or if the at least one printing material (03) has a pigment coating of at least 5% of the total weight of the at least one printing material ( 03) and / or if the at least one printing material (03) has a pigment coating of a maximum of 30% of the total weight of the at least one printing material (03).

87. The method according to claim 61 and / or 62 and / or 63 and / or 64 and / or 65 and / or 66 and / or 67 and / or 68 and / or 69 and / or 70 and / or 71 and / or 72 and / or 73 and / or 74 and / or 75 and / or 76 and / or 77 and / or 78 and / or 79 and / or 80 and / or 81 and / or 82 and / or 83 and / or 84 and / or 85 and / or 86, characterized in that the printing unit (01) has at least four cleaning devices (18), that each cleaning device (18) cleans one nozzle bar (04) of the at least four nozzle bars (04).

88. The method according to claim 61 and / or 62 and / or 63 and / or 64 and / or 65 and / or 66 and / or 67 and / or 68 and / or 69 and / or 70 and / or 71 and / or 72 and / or 73 and / or 74 and / or 75 and / or 76 and / or 77 and / or 78 and / or 79 and / or 80 and / or 81 and / or 82 and / or 83 and / or 84 and / or 85 and / or 86 and / or 87, characterized in that at least one sealing element (56) is arranged in a depot position in direct contact with the at least one nozzle bar (04).

89. The method according to claim 88, characterized in that a third maintenance position is designed as the depot position.

90. The method according to 89, characterized in that the at least one cleaning device (18) is arranged in the use position, that the at least one nozzle bar (04) is optionally arranged at least in the first maintenance position or in the third maintenance position, that the at least one cleaning device (18) at least partially cleans the nozzle bar (04) arranged in the first maintenance position or that the at least one sealing element (56) comes into direct contact with the at least one print head (08) of the nozzle bar (04) arranged in the third maintenance position.

91. The method according to 88 and / or 89 and / or 90, characterized in that the at least one print head (08) of the at least one nozzle bar (04) is optionally in contact with the at least one cleaning device (18) or in contact with the at least one Cleaning device (61) or comes into contact with the at least one sealing element (56).

92. The method according to 91, characterized in that the at least one sealing element (56) comes into optional contact with the at least one print head (08) when the at least one nozzle bar (04) is in a non-printing operating state for at least thirty minutes.

93. The method according to 88 and / or 89 and / or 90 and / or 91 and / or 92, characterized in that the at least one sealing element (56) has at least two Exit surfaces (09) of at least two print heads (08) of at least one row of print heads (08) of at least one nozzle bar (04) of the at least four nozzle bars (04) and / or that the at least one sealing element (56) relative to the at least two print heads (08) is moved in a direction orthogonal to a longest side of the at least one nozzle bar (04) and / or parallel to the at least one transport path of the at least one printing material (03).

94. The method according to claim 61 and / or 62 and / or 63 and / or 64 and / or 65 and / or 66 and / or 67 and / or 68 and / or 69 and / or 70 and / or 71 and / or 72 and / or 73 and / or 74 and / or 75 and / or 76 and / or 77 and / or 78 and / or 79 and / or 80 and / or 81 and / or 82 and / or 83 and / or 84 and / or 85 and / or 86 and / or 87 and / or 88 and / or 89 and / or 90 and / or 91 and / or 92 and / or 93, characterized in that the longest side of the at least one nozzle bar (04) is the Side of the at least one nozzle bar (04), along which side at least two print heads (08) are arranged in a row, and / or that the shortest side of the at least one nozzle bar (04) is arranged orthogonally to its longest side and / or that only one print head (08) is arranged in a row along the shortest side of the at least one nozzle bar (04).

95. The method according to claim 61 and / or 62 and / or 63 and / or 64 and / or 65 and / or 66 and / or 67 and / or 68 and / or 69 and / or 70 and / or 71 and / or 72 and / or 73 and / or 74 and / or 75 and / or 76 and / or 77 and / or 78 and / or 79 and / or 80 and / or 81 and / or 82 and / or 83 and / or 84 and / or 85 and / or 86 and / or 87 and / or 88 and / or 89 and / or 90 and / or 91 and / or 92 and / or 93 and / or 94, characterized in that an x-direction along a direction corresponds to a shortest side of the respective nozzle bar (04) and / or that a y-direction corresponds to a Corresponds to the direction along a longest side of the respective nozzle bar (04) and / or that a z-direction is parallel to a normal vector of a plane, which plane is spanned by the x-direction and the y-direction, and / or that the z- Direction is a vertical direction, and / or that a transverse direction (A) is a direction along a longest side of the at least one nozzle bar (04) and / or that the transverse direction (A) is parallel to the y-direction and / or that the Transverse direction (A) is parallel to a working width, and / or that a transport direction (T) is a direction provided for a printing operating state of the at least one printing unit (01) of the printing machine in which the printing material (03) in the event of its presence at each point of the transport path is transported and / or that the transport direction (T) is orthogonal to the transverse direction (A) and / or that the transport direction (T) is parallel to the x-direction in a location of the least The distance between a relevant print head (08) and the transport path is.

96. The method according to claim 61 and / or 62 and / or 63 and / or 64 and / or 65 and / or 66 and / or 67 and / or 68 and / or 69 and / or 70 and / or 71 and / or 72 and / or 73 and / or 74 and / or 75 and / or 76 and / or 77 and / or 78 and / or 79 and / or 80 and / or 81 and / or 82 and / or 83 and / or 84 and / or 85 and / or 86 and / or 87 and / or 88 and / or 89 and / or 90 and / or 91 and / or 92 and / or 93 and / or 94 and / or 95, characterized in that a contact of the at least one print head (08) to the at least one cleaning device (18) corresponds to an indirect contact and / or that the contact of the at least one print head (08) to the at least one cleaning device (18) a contactless cleaning of the at least one exit surface (09) of the corresponds to at least one print head (08).

97. The method according to claim 61 and / or 62 and / or 63 and / or 64 and / or 65 and / or 66 and / or 67 and / or 68 and / or 69 and / or 70 and / or 71 and / or 72 and / or 73 and / or 74 and / or 75 and / or 76 and / or 77 and / or 78 and / or 79 and / or 80 and / or 81 and / or 82 and / or 83 and / or 84 and / or 85 and / or 86 and / or 87 and / or 88 and / or 89 and / or 90 and / or 91 and / or 92 and / or 93 and / or 94 and / or 95 and / or 96, characterized in that the area between the at least one nozzle bar (04) and the transport path of printing material (03) is a spatial area , which has the shortest distance between at least one exit surface (09) of the at least one print head (08) of the at least one nozzle bar (04) and the transport path, and / or that the area between the at least one nozzle bar (04) and the transport path of printing material (03) is a spatial area within at least two delimitation planes, the at least two delimitation planes being perpendicular to a plane which the at least one exits s area (09) of the at least one print head (08) of the at least one nozzle bar (04) of at least four nozzle bars (04), and wherein the at least one nozzle bar (04) in the transport direction (T) of printing material (03) through a respective delimitation plane which is limited to at least two boundary levels.