WO2009083088A1

WO2009083088A1 - Coating device having separate cylinder drive

Info

Publication number: WO2009083088A1
Application number: PCT/EP2008/010247
Authority: WO
Inventors: Eva Paul; Jürgen Schölzig
Original assignee: Manroland Ag
Priority date: 2007-12-28
Filing date: 2008-12-04
Publication date: 2009-07-09
Also published as: DE102008059309B4; DE102008059309A1

Abstract

The invention relates to a drive configuration in a printing machine for improving the method of operation of film transfer, wherein at least one plate cylinder (12) has a coating system (2) for film transfer having a direct drive (2). An inking system (61-63) on the plate cylinder and associated with the plate cylinder (12) can further be decoupled from the main drive of the printing machine.

Description

Coating device with separate cylinder drive

The invention relates to a device in a machine for transferring imaging layers from a carrier film to printing sheet according to the preamble of patent claim 1 in conjunction with a method according to the preamble of patent claim 6.

It is known to produce metallic layers on printed sheets by means of a film transfer process. Thus, EP 0 569 520 B1 describes a printing material and a printing device using this material. In this case, a sheet-processing machine is shown, which has a feeder and a boom, between two units printing units and a coating unit are arranged. In at least one of the printing units, an adhesive pattern is applied by means of the planographic printing process. This adhesive pattern is applied in a cold printing process and has a specific imaging subject. In the printing unit following the coating unit with a counter-pressure cylinder and a press roller a film guide is provided. This is designed in such a way that a film strip or a transfer film is passed through the transfer nip of the coating unit between the impression cylinder and the press roll from a film supply roll. The foil strip is rewound on the outlet side after leaving the coating unit. The transfer film has a carrier layer on which imaging layers such as metallic layers, for example of aluminum, can be applied. Between the metallic layer and the carrier film, a separating layer is provided, which ensures that the metallic layer can be removed from the carrier layer. When printing sheets are transported through the printing unit, each sheet is given an adhesive pattern. Thereafter, the sheet is passed through the coating unit, wherein brought by means of the press roller on the impression cylinder resting sheet associated with the film material becomes. In this case, the downwardly lying metallic layer enters into a close connection with the areas provided with adhesive on the printed sheet. After further transporting the printing sheet, the metallic layer adheres only in the area provided with the adhesive pattern. The carrier film is thus removed from the metallic layer in the region of the adhesive pattern. The used in this way transfer film is wound up again. The print sheet is laid out in the coated state.

It is known to use such coating units, for example in printing units of printing presses. A disadvantage of the known devices is that they are often not flexible enough to use.

Furthermore, printing presses are known in which one of the drive of the other cylinder independent drive one or more plate cylinder is provided. The plate cylinder can be uncoupled from the main drive and positioned or shut down. The plate cylinder can also be provided with an auxiliary drive. Furthermore, the inking units and possibly the dampening units can be disconnected and engaged separately or in conjunction with the plate cylinder. Likewise, dyeing and dampening units can be driven separately.

The object of the invention is therefore to provide a device by means of which the transfer of an imaging layer to a sheet can be done economically and safely, the device should be easy to handle.

The solution of this problem results in a device according to the features of claim 1.

According to the invention, at least the coating unit is designed as an offset printing unit with a plate cylinder, wherein at least the plate cylinder has a drive independent of the other cylinders. The operating method is characterized in that setup operations for use of the coating unit as an offset printing unit during the execution of a print job with film transfer are performed.

In an operation of the printing machine with film transfer by application of functional or decorative film while the plate cylinder in the intended for the film transfer printing unit as a coating plant is stopped. This is preferably done in a neighboring rubber cylinder, which is then used as a press roller for the film transfer, releasing position. So here the cylinder channel of the plate cylinder can be compared to the blanket cylinder.

Furthermore, the dampening unit and / or the inking unit can also be shut down separately. The coating unit can again be used as a printing unit with ink application in a normal printing process following the printing process with film transfer. Such a printing unit is preferably equipped with means for automated printing plate change. Therefore, a set-up of this printing unit can be performed with minimal manpower.

These features also apply to the first printing unit used as an application unit for the adhesive application for film transfer. Therefore, there is also a quick conversion from the normal pressure on the adhesive application and in the reverse direction possible. In particular, the processes which reduce the set-up time by presetting are of particular advantage. For this purpose, the ink dosing systems, which also dose the glue in the applicator, can be preset and used in the scope of the retooling for the preparation of the printing press for film transfer. The same applies to the conversion of the order unit and the coating unit to a normal color print job after a print job with an integrated film transfer.

For further setting time lowering, in particular the applicator can be provided with a paint supply device. For this purpose are already known Cartridge systems with exchangeable ink containers or stationary ink supply devices can be used. This adhesive or ink can be assigned variable to the order.

The inking unit can also be designed as a so-called short inking unit in the form of a so-called anilox inking unit. This is particularly advantageous for the adhesive application in the order. The printing machine can therefore also be combined with anilox inking units and conventional inking units.

As advantageous effects are mentioned here:

- Higher level of automation possible with less personnel

- Set-up times are reduced (automated removal of printing plates in the coating station or re-feeding for printing, changing in the order machine depending on the type of job) - Fast job change from film transfer to printing or vice versa and fast job changes when changing the subject in film transfer operation

- Energy savings through shut down units (plate cylinder and dyeing / dampening unit in operation with film transfer)

- No protective measures for dyeing / dampening unit during operation of the printing machine with film transfer, if no ink or dampening solution is applied in the coating unit

- Small residual amounts of adhesive or printing ink can be used up purposefully in conjunction with a sheet counter

The device can be used in an advantageous manner if an improvement in film utilization is to be achieved by dividing the transfer film into one or more partial film webs of lesser width. In combination with the above-mentioned method, it is thus also possible to use different types of film side by side.

In the following the invention is illustrated in more detail with reference to figures. Showing:

Figure 1: an overview of a printing press with a

Film transfer mechanism.

FIG. 1 shows a sheet-processing machine which consists of at least two printing units. The two printing units are used for the following purposes:

A printing sheet is provided with an imaging adhesive pattern in the first printing unit (applicator 1). Thereafter, in the subsequent printing unit together with a printing sheet, a transfer film 5 is passed through a transfer nip 6, the transfer film 5 being pressed in the transfer nip 6 by a press roll 3 against the printing sheet (coating unit 2).

The applicator 1, a known offset printing unit with an inking unit 11.1, a dampening unit 11.2, which are associated with a plate cylinder 12, a blanket cylinder 13 and a sheet leading impression cylinder 4. Likewise, a paint module can be used here, where the blanket cylinder 13 is a forme cylinder and is supplied with ink or adhesive, for example, by a chamber doctor blade and an anilox roller instead of the inking unit 11. The transfer nip 6 in the coating unit 2 is formed by a press roll 3 and an impression cylinder 4. Here, the press roller 3, the blanket cylinder and the impression cylinder 4 correspond to the impression cylinder of an offset printing unit. Furthermore, the press roller 3 can correspond to the forme cylinder and the impression cylinder 4 to the impression cylinder of a paint module of a sheet-fed press.

The transfer films 5 have a multilayer structure. They have a carrier layer on which an imaging layer is applied by means of a release layer. The separating layer serves to facilitate the lifting of the imaging layer from the carrier layer. The image-forming layer may be, for example, a metallized layer or a gloss layer or a texture layer or a colored layer or a layer containing one or more image patterns. The coating unit 2 is preferably assigned a film supply roll 8 on the side of the sheet feed to the coating unit 2. The film supply roll 8 has a rotary drive 7. The rotary drive 7 is required for the continuous controlled feeding of the transfer film to the coating unit 2 and is therefore controllable. Furthermore, a deflecting or tensioning roller is provided in the region of the film feed. Thus, the film web of the transfer film 5 is always held in the same tension against the press roller 3. On the downstream side of the coating unit 2 or printing unit, a film collecting roller 9 is shown. On the film collecting roll 9, the used film material is wound up again. Again, there is one for optimized production

Provide rotary actuator 7, which is controllable. In essence, the transfer film 5 could also be moved by the rotary drive 7 on the discharge side and kept taut on the inlet side by means of a brake or be moved by slip drives on the drain and / or the inlet side.

The transfer process of the imaging e.g. metallized layer on the printing paper takes place in the transfer nip 6 between the press roller 3 and the impression cylinder 4th

Likewise, a press roller 3 ¹ , as indicated in Figure 1 in the applicator 1, the transfer gap between blanket cylinder 13 and impression cylinder 4 downstream and assigned to the impression cylinder 4. By means of the press roller 3 ¹ , a transfer film 5 'can be placed on a sheet held on the printing cylinder 4, so that the imaging or metallization can be done there directly downstream of the imaging adhesive application.

The press roll 3 is provided with a press fabric 10, e.g. be provided as a plastic coating, comparable to a blanket or blanket. The press fabric 10 is held in a cylinder channel on jigs.

To ensure the efficiency of the coating process is provided that the film feed the transfer film 5 from the film supply roll 8 to Transfer nip 6 and the film collection roller 9 is controlled so that as far as possible, the transfer sheet 5 is then stopped when no transfer of the imaging layer is to take place. For this purpose, a control of the transfer film 5 can be carried out so that when passing a gripper of the sheet leading impression cylinder 4 receiving cylinder channel of the film feed is stopped.

An improved film utilization results from the fact that the transfer film 5 is divided into one or more Teilfolienbahnen lesser width. Within the coating unit 2 used for the film transfer, a web guide for transfer films 5 is shown, has film guide rollers 14, by means of which the transfer film 5 is supplied to the transfer nip 6 and discharged therefrom. In this case, openings arranged in contact with the coating unit 2 must be provided in accordance with the foil guide. These openings are designed so that the film webs 5 are easily fed and discharged and at the same time the protection function is fully retained.

If the film rolls 7, 8 are distributed over two printing towers as in FIG. 1, the guide of the film web 5 can be arranged parallel to the front side of the coating unit 2 or the protective devices 15 attached there after leaving the transfer gap 6. Thus, the passage between the coating unit 2 and a subordinate printing unit 50 remains accessible. The same applies to the access area between the applicator 1 and the Beschichtungwerk 2 when the film web 5 'is assigned via the press roller 3' the applicator 1 in the manner described above and arranged parallel to a front side Verschutzung 15 of the applicator 1 is.

To operate the printing press with integrated film transfer, three variants for guiding the transfer film web 5 are shown in FIG. a. Guide on the coating unit 2 on the side of the applicator 1 to the transfer gap 6 and approximately tangential to the press roller 3 through the transfer nip 6 b. Supply and discharge (here dashed lines) on the same side of the coating unit 2 to and around the press roller 3 around by the transfer nip 6th c. Transfer film 5 '(dashed lines) in the order unit 1 on side facing away from sheet supply side of the printing unit to / from the transfer nip 6' (press roller 3 '/ impression cylinder 4) out; Transfer nip 6 'is the dyeing or adhesive pressure serving nip between printing blanket cylinder 13 and impression cylinder 4 downstream.

In Figure 1, an approximately tangential film guide between the press roll 3 and the impression cylinder 4 with respect to the press roll 3 and the wrap of the press roll 3 is provided by less than 90 degrees. Thus, a defined contact of the film web 5 on the press roll 3 can be achieved and at the same time necessary conditions for a film timing in the transfer nip 6, e.g. also be created during a channel run and also for the use of narrow film webs 5.

The transport of the transfer film 5 can be monitored on or between film guide rollers of the film web 5 by providing one or more web tension measuring devices which have force measuring devices.

Electrical signals of the web tension measuring devices are evaluated. The additionally obtained information about the web tension as the actual value, in particular in the context of the aforementioned evaluations, can be used for the control of the printing or transfer process. For this purpose, the system can be coupled to a control station of the printing press. The setpoint values for maximum and minimum web tension can be set via the control station as a function of the type of transfer film 5 used and of printing or transfer conditions in the coating module 2, depending on the properties of the printing material, the adhesive or the press cover. Necessary data can be read via interfaces directly from data carriers to film supply rolls.

A device for automatic or semi-automatic replacement of printing plates / printing plates on the respective plate cylinder 12 of the applicator 1 or of the coating unit 2 is preferably provided in each case on the protective devices 15 or in the protective devices 15. In the embodiment according to FIG. 1, furthermore, a printing unit with a so-called short inking unit is shown in the coating unit 2. The short inking unit has a chamber doctor blade 61, an anilox roller 62 and an applicator roller 62. The chamber doctor blade 61 absorbs printing ink (or lacquer or adhesive or other coating media) and transfers this to the anilox roller 62. For this purpose, it is provided uniformly in its surface with very fine well-shaped depressions which receive the respective coating medium for continuous transfer. From the depressions, the coating medium is transferred to the application roller 63, which then delivers this to the printing plate / printing plate on the plate cylinder 12. Depending on the nature of the printing process, the transfer to the printing plate with the aid of a dampening unit 65 or controlled by the nature of the surface properties in dry offset or high pressure process. The anilox inking unit thus described has the advantage that a continuous supply of ink by means of the anilox roller 62 is ensured in a very short way. Such an anilox inking unit can also be arranged in the applicator 1 or other printing units associated with the printing press.

It is further provided to apply a further color print to the printing plate 50 which is coated imagewise with a metallized layer in a printing unit 50 following the coating unit 2. In this case, the printed sheet from the coating unit 2 is transferred from the counter-pressure cylinder 4 via a sheet-transfer drum or a sheet-transfer unit to an impression cylinder 40 of the printing unit 50. The printing unit 50 has, as usual in offset printing units, the counter-pressure cylinder 40, an associated rubber or blanket cylinder 41 and a plate cylinder 43 associated therewith. The plate cylinder 43 are here shown schematically an inking unit 47 and a dampening unit 48 assigned. Between the counter-pressure cylinder 40 and the blanket cylinder 41, a further pressure gap 60 is formed. In this printing gap 60, a color image by means of ink from a spanned on the plate cylinder 43 pressure plate 44th from over a arranged on the blanket cylinder 41 cover (blanket) 42 applied to the previously printed or coated sheet. Also, the printing unit 50 is the operator side 15 assigned a protection, in which a device for automatic or semi-automatic replacement of printing plates / printing plates can be arranged.

The direction of the sheet transport is indicated on all impression cylinders 4, 40 in each case by a directional arrow. The sheet transport leads between the counter-pressure cylinders 4, 40 in addition via sheet transport cylinder or transfer drums 45, which can also be designed as skeleton drums.

In the press nip 60, an approximately line-shaped pressure is exerted on the printed sheet, which also acts on the image parts of the metallic coating. It is provided here that the pressure in the press nip 60 is matched to the pressure provided in the transfer nip 6.

To improve the adhesion of the transferred film parts in conjunction with a high-quality printing in the printing unit 50, the pressure is selected depending on the type and elastic property of the cover 42 arranged on the blanket cylinder 41 and the press fabric 10 arranged on the press roller 3. On the one hand, preferably a hard-elastic and in its surface opposite foil little adhesive, but possibly very finely profiled cover is selected on the press roller 3.

On the other hand, on the blanket cylinder 41, a cover suitable for the normal color printing is selected as a blanket, which is ink accepting and softer in elasticity than the reference of the press roller 3.

The pressing of the printing material (Druckbeistellung) in one of the column 6 or 60 results from the fact that there is a distance adjustment for the function setting of the elements involved (ie for the film transfer or color printing) so that the gap is smaller by a certain amount than that Thickness of the printed matter. Thus, the substrate is compressed when passing through the transfer nip 6 or the pressure column 60 by the fabric (press fabric 10 and blanket 42) deform due to their elasticity. The Druckbeistellung / printing pressure is thus a relative measure between the substrate thickness and the size of the functional position of the participating rollers / cylinders adjusting transfer gap 6 or the printing nip 60. In the coating unit 2 are substrate, carrier film, release layer, transfer layer and adhesive on the substrate adhesive layer by to guide the transfer nip 6. Thus, there is a thicker, more uniform layer structure with respect to the printing unit 50, in which coated printing material and ink layer to be printed pass through the press nip 60 and in the region of the applied transfer film a slightly greater pressure takes place. The pressure effect is adjusted between transfer nip 6 and nip 60 such that in the case of film transfer in the coating unit 2, the interacting surfaces in the transfer nip 6 preferably have the same or only a slightly greater distance than the surfaces in the nip 60. This results in the coating in the transfer nip 6 preferably a stronger pressure than in the printing nip 60, which can be tuned to a value favorable in the printing nip 60 of the printing unit 50 for the color printing value. This simplifies the device and thus ensures good print quality.

Characteristic of the inventive design is that applicator 1 and / or coating unit 2 and / or printing unit 50 and possibly other printing units each have a plate cylinder 12, 43, which is provided with a direct drive 70. The direct drive 70 is used in each case to drive the plate cylinder 12, 43 independently of the other cylinders of the printing press. The synchronization takes place by detecting the rotational position of one of the other cylinders of the printing press and corresponding tracking of the drive of the plate cylinder 12, 43. In the preferred embodiment, all cylinders coming into contact with the printing material, namely the counter-pressure cylinders 4, 40 and blanket cylinders or press rollers, are used 3, 13, 41 and the impression cylinders 4, 40 in the transport direction of the printing material connecting transfer drums 45 driven jointly by a main drive of the printing press. The entire mode of operation of the press concerned here is determined by one or more plate cylinders 12, 42 by means of a respective direct drive 70 independently of the other cylinders of the printing unit 50 and / or coating unit 2 and / or applicator 1 can be driven. Alternatively, the direct drive 70 can also be designed as an auxiliary drive, wherein the plate cylinder 12, 42 can be coupled by means of a coupling device optionally on the main drive of the printing press or on the auxiliary drive. The auxiliary drive is used when the plate cylinder 12, 42 is disconnected from the main drive of the printing press to perform setup operations or functions of the printing press by independently moving the plate cylinder 12, 42.

Furthermore, the plate cylinders 12, 42 associated with dampening units 11.2, 48, 65 and / or inking units 11.1, 61-63, 47 either driven separately or they are on the plate cylinders 12, 42 on / uncoupled. Thus, the operation of the dampening units 11.2, 48, 65 and / or inking units 11.1, 61-63, 47 in relation to the printing unit state independently, with respect to the functional state of the plate cylinder 12, 42 but be executed dependent.

The dampening units 11.2, 48, 65 and / or inking units 11.1, 61-63, 47 are preferably decoupled from the plate cylinder 12, 42 during production, coupled to the main drive and driven by the latter.

The basic functions of such an embodiment are as follows:

I. The plate cylinders 12, 42 equipped with a direct drive 70 can be moved independently of the remainder of the printing press in all operations that are necessary for equipping the printing press.

II. The plate cylinders 12, 42 can be moved together with or separately from the inking units 11.1, 61-63, 47 for cleaning, color pre-setting or color change.

IN THE. The plate cylinders 12, 42 can perform functions independent of the remainder of the printing press, such as printing plate removal / feeding or other set-up operations during the printing or coating process. This results in new production possibilities.

a) During operation of the printing press with film transfer by application of functional / decorative film, the plate cylinder 12 is first able to be shut down in the printing unit (coating unit 2) provided for the film transfer. This takes place, for example, in a position releasing the adjacent blanket cylinder (press roller 3 for film transfer) so that it can rotate freely without touching the plate cylinder 12. For this purpose, provided for printing plate tension cylinder channel 46 of the plate cylinder 12 in the coating unit 2 the blanket cylinder or the press roller 3 are compared.

b) Furthermore, it can be provided that dampening units 11.2, 48, 65 and / or inking units 11.1, 47, 61-63 are also separately drivable and / or can be stopped. Thus, the supply of ink, adhesive or coating media can be made variable by the printing unit preparation is freely controllable. Furthermore, the supply of coating media can be switched off. All these operations are important when using the printing press for film transfer. For this purpose, in the applicator 1 to prepare the supply of the adhesive together or independent of the ink supply in other printing units after the coating unit and control. Furthermore, an independent cleaning process can be carried out in the coating unit 2 if the film transfer is to be prepared and carried out there.

c) The coating unit 2 can be used again in a production process with a film transfer following normal printing process as a printing unit with inking. For this purpose, this printing unit is preferably equipped with facilities for automated printing plate change. Therefore, a conversion process of this printing unit can be performed after the film transfer with minimal manpower. The desired printing plate is automatically fed using the direct drive 70 in the printing unit (coating unit 2), while in other printing units (applicator 1, printing unit). 50) other conversions such as plate changes are performed. Furthermore, the empty inking unit 61-63 can now be filled with a desired printing ink. Taking account of safety concerns, all processes can also be carried out during the removal of the transfer film 5 from the coating plant 2.

Also, the reverse setup of color printing on the film transfer is faster executable in the coating unit 2.

d) The variability also applies to the first printing unit used for the adhesive application for film transfer as an application unit 1. Therefore, in the application unit 1 a quick conversion from the normal pressure to the adhesive application and in the reverse direction is possible. In particular, the processes which reduce the set-up time by presetting on the inking unit 11.1 also apply here. For this purpose, the Farbdosiersysteme, which also dose the adhesive in the inking unit 11.1 of the applicator unit 1, can be preset and used in the scope of retooling for the preparation of the printing press for film transfer. The same advantages also apply to the conversion of the applicator 1 to a normal color print job after a print job with an integrated film transfer.

e) For further set-time lowering, in particular the applicator 1 can be provided with a paint supply device. For this purpose, already known cartridge systems with replaceable ink containers or stationary ink supply devices can be used. Adhesives or printing inks can thus be assigned to the applicator 1 in a simple and variable manner, prepared for delivery and removed again.

The inking unit can also be designed as a so-called short inking unit in the form of a so-called anilox inking unit. This is particularly advantageous for the application of adhesive in the applicator. The printing machine can therefore also be combined with anilox inking units and conventional inking units. As advantageous effects are mentioned here:

- Higher level of automation possible with less personnel

- Set-up times are reduced (automated removal of printing plates in the coating station or re-feeding for printing, change in the order machine depending on the type of order)

- Fast change of job from film transfer to printing or vice versa and fast job change when changing the subject in the film transfer operation

- Energy saving due to disused units (plate cylinder and dyeing / dampening unit in operation with film transfer) - No protective measures for dyeing / dampening unit during operation of the printing press with film transfer, if no ink or dampening solution is applied in the coating unit

The device can be used in an advantageous manner if an improvement in film utilization is to be achieved by dividing the transfer film into one or more partial film webs of lesser width. In combination with the aforementioned method, it is thus also possible to use different types of film side by side.

Alternatively, if no direct drives are to be used, it is possible to connect one, several or all plate cylinders 12, 43 by means of a clutch to the transmission of the printing press. Such a coupling is designed so that it allows a positionally correct in relation to the other cylinders of the printing press coupling of the plate cylinder 12, 46 to the main drive. The positioning can then be done via an auxiliary drive. Such an auxiliary drive is also suitable for moving the plate cylinder 12, 43 for set-up purposes, such as a plate change or cleaning operations.

Thus, each plate cylinder 12, 43 can be disconnected for setup purposes or in certain operating situations from the main drive of the printing press. examples For example, in a particularly advantageous manner, the plate cylinder 12 of the coating unit 2 can be stopped during an application process with integrated film transfer. This drive energy is saved. Furthermore, a danger point is reduced. Furthermore, cleaning work can be carried out from previous production processes or set-up work for subsequent production operations.

The mode of production of the printing press is then as follows:

- In normal print production in multi-color printing takes place with all or selected coupled plate cylinders 12, 43, the color transfer from the inking units to the sheet; stopped plate cylinders 12, 43 can be cleaned or prepared.

in a mode of operation with integrated film application, the plate cylinder or plates 12, 43 are uncoupled in the coating unit or units 2 (depending on where the one or more coating units 2 are arranged in the printing machine), stopped plate cylinders 12, 43 can be cleaned or be prepared.

- When changing the printing plates on one or more plate cylinders 12, 43, the affected plate cylinder 12, 43 are disconnected from the main drive and moved by means of auxiliary drives; Such set-up work can possibly also be carried out during one of the aforementioned modes of operation.

LIST OF REFERENCE NUMBERS

1 applicator

2 coating unit

3 press roll (3 ¹ )

4 impression cylinders

5 transfer film / film web (5 ¹ )

6 transfer gap (6 ¹ )

7 roller drive

8 foil supply roll

9 foil collecting roll

10 press clothing

11.1 inking unit

11.2 dampening unit

12 plate cylinders

13 rubber cylinders

14 film guide roller

15 print protection

16 dryers

17 inspection device

- 18 dancer roller

40 impression cylinders

41 blanket cylinder

42 blanket / blanket

43 plate cylinder

44 printing form / printing plate

45 transfer drum

46 cylinder channel

50 printing unit 60 pressure gap

61 chambered doctor blade

62 anilox roller 63 applicator roller

64.1 inking unit

64.2 dampening unit

70 Direct drive 71 Coupling

FA foil application

DB1 printing job / printing press

DB2 printing / printing

Claims

claims

1. Device for transfer of imaging layers from a transfer film

(5) on an image-wise coated with an adhesive sheet with a coating unit (2), the one common

Transfer gap (6) forming counter-pressure cylinder (4) and a press roller (3) through which the transfer film (5) from a film supply roll (8), the press roller (3) is guided, such that they with the coated side of the on the impression cylinder (4) guided sheet lying and under pressure to transfer the coating together with the

Printing sheet through the transfer nip (6) is guided, characterized in that the applicator (1) and / or the coating unit (2) and / or at least one of the coating unit (2) downstream printing unit (50) each have a plate cylinder (12, 42) is assigned, such that drive or

Stopping the plate cylinder (12, 42) partially or completely mechanically independent of the drive of the other elements of the printing machine done

2. Apparatus according to claim 1, characterized in that the applicator (1) and / or the coating unit (2) and / or at least one of the coating unit (2) downstream printing unit (50) each have a plate cylinder (12, 42) with a direct drive (70) is assigned, such that the drive of the plate cylinder (12, 42) partially or completely mechanically independent of the drive of the other elements of the printing press.

3. A device according to claim 1, characterized in that the applicator (1) and / or the coating unit (2) and / or at least one of the coating unit (2) downstream printing unit (50) in each case a plate cylinder (12, 42) with a coupling (71) to the main drive of the printing press and with a plate cylinder (12, 43) optionally driving auxiliary drive is assigned, such that the drive of the plate cylinder (12, 42) optionally together the drive of other elements of the printing press via the main drive or separately via the auxiliary drive.

4. Apparatus according to claim 1 or 2, characterized in that one or more plate cylinders (12, 42) each associated with a drive motor as direct drive (70) and that the direct drive (70) by means of an electrical control with the main drive of the printing press is synchronized.

5. Apparatus according to claim 1 to 3, characterized in that one or more plate cylinders (12, 42) is associated with a drive motor as a direct drive (70) via a coupling device and that the direct drive (70) by means of the coupling device of the main drive of the printing press separable or can be synchronized with this.

6. Apparatus according to claim 2, 4 or 5, characterized in that a plate cylinder (12, 42) in each case at least one inking unit (11.1; 47; 61-63) is assigned via a coupling device and that the inking unit (11.1; 47; 61 63) can be separated from or synchronized with the main drive of the printing press by means of a further coupling device, such that the inking unit (11.1; 47; 61-63) can be selectively replaced by the plate cylinder (12).

42) or the main drive of the printing press can be driven.

7. Apparatus according to claim 2 to 6, characterized in that a plate cylinder (12, 42) in each case at least one dampening unit (11.2; 48; 65) can be connected via a coupling device.

8. A method for operating a printing press with a device for transfer of imaging layers with a coating unit (2), which comprises a common transfer nip (6) forming impression cylinder (4), a press roll (3) and a plate cylinder (12) after one or all of claims 1 to 7, characterized in that when using the coating unit (2) for the film transfer of the plate cylinder (12) in the coating unit (2) is driven or stopped independently of the main drive, wherein the effective surface of the plate cylinder ( 12, 42) can be positioned at a distance from the press roll (3).

9. The method according to claim 8, characterized in that when using the coating unit (2) for the film transfer, the inking unit (61-63) in the coating unit (2) is stopped, preferably at least the applicator roll / -n (63) of the plate cylinder ( 12, 42) are spaced.

10. The method according to claim 8 or 9, characterized in that before using the coating unit (2) for the film transfer at least one printing plate on the plate cylinder (12) and the inking unit (61- 63) in the coating unit (2) are cleaned, that the pressure plate of the

Plate cylinder (12, 42) removed and the transfer sheet (5) in the transfer nip (6) on the press roller (3) is inserted.

11. The method according to claim 8 to 10, characterized in that after use of the coating unit (2) for the film transfer and before its use for color printing during the Abrüstvorgänge for the film transfer, a printing plate on the plate cylinder (12) in the coating unit (2) fed and the inking unit (61-63) in the coating unit (2) are filled with printing ink, and that the transfer film (5) is removed from the transfer nip (6) on the press roller (3).

12. The method according to claim 10, characterized in that before use of the coating unit (2) for the film transfer at least one printing plate on the plate cylinder (12) in the applicator (1) and the inking unit (11.1) in the applicator (1) are cleaned, that the A printing plate is removed from the plate cylinder (12, 42) and fed to a printing plate with a film substrate for the application of adhesive, and that the inking unit (11.1) an adhesive for the film transfer is supplied in an adapted to the Folieniensu- th quantity distribution.