[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

EP2879878B1 - Method for setting the printing length of a printed image in a multicolor rotary printing machine - Google Patents

Method for setting the printing length of a printed image in a multicolor rotary printing machine Download PDF

Info

Publication number
EP2879878B1
EP2879878B1 EP13745820.4A EP13745820A EP2879878B1 EP 2879878 B1 EP2879878 B1 EP 2879878B1 EP 13745820 A EP13745820 A EP 13745820A EP 2879878 B1 EP2879878 B1 EP 2879878B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
format
circumferential speed
changed
format cylinder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP13745820.4A
Other languages
German (de)
French (fr)
Other versions
EP2879878B8 (en
EP2879878A2 (en
Inventor
Mario FRANKENBERG
Rainer Ehrenberg
Frank Westhof
Uwe HÖWELMEYER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EHRENBERG, RAINER
Frankenberg Mario
HOEWELMEYER, UWE
WESTHOF, FRANK
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP2879878A2 publication Critical patent/EP2879878A2/en
Application granted granted Critical
Publication of EP2879878B1 publication Critical patent/EP2879878B1/en
Publication of EP2879878B8 publication Critical patent/EP2879878B8/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F5/00—Rotary letterpress machines
    • B41F5/24—Rotary letterpress machines for flexographic printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B41F13/10—Forme cylinders
    • B41F13/12—Registering devices
    • B41F13/14—Registering devices with means for displacing the cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0081—Devices for scanning register marks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2200/00—Printing processes
    • B41P2200/10—Relief printing
    • B41P2200/12—Flexographic printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2213/00—Arrangements for actuating or driving printing presses; Auxiliary devices or processes
    • B41P2213/70—Driving devices associated with particular installations or situations
    • B41P2213/73—Driving devices for multicolour presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2233/00—Arrangements for the operation of printing presses
    • B41P2233/50—Marks on printed material
    • B41P2233/52—Marks on printed material for registering

Definitions

  • the invention relates to a method for adjusting the printing length of a printed image in a multicolor rotary printing press according to the preamble of claim 1.
  • the multicolor printed image is transferred to the printing substrate by successively transferring a plurality of printing cylinders, the so-called format cylinders, one color each onto the printing substrate, wherein the areas of the format cylinders carrying the ink deliver this ink completely or partially to the printing material.
  • Several overlapping colors eventually lead to the printed image.
  • the printing material is guided over one or more impression cylinders. If a single counter-pressure cylinder is present, then the format cylinders are employed on this counter-pressure cylinder, so that the printing inks can be completely transferred as far as possible. If there are several impression cylinders, then each impression cylinder is often assigned a single format cylinder. It can be assigned to each impression cylinder but also two or even more format cylinder.
  • peripheral speeds of all format cylinders should be identical and also coincide with the or the peripheral speeds of the impression cylinder or cylinders.
  • each individual cylinder is its own, position-controlled Drive equipped so that the peripheral speed can be set very accurately.
  • a high print quality is achieved.
  • the format cylinder or parts thereof - in particular the so-called sleeve - is usually to be exchanged for a larger or smaller circumference.
  • the register is subsequently readjusted, which is reflected both in the DE 195 27 199 A1 as well as in the EP 2 392 459 A1 is described.
  • the readjustment of the register leads to a waste of paper.
  • the object of the present invention is therefore to propose a method with which the spoiling accident is avoided.
  • the peripheral speed of the first format cylinder is changed according to the invention during the current printing operation relative to the peripheral speed of the impression cylinder.
  • the control and / or regulating device which advantageously runs as a program on a control computer, the amount of the desired peripheral speed of the forme cylinder or the desired deviation from the peripheral speed of the impression cylinder can be communicated. This can be done manually or according to a table which contains such values as a function of the time and / or the length of the already printed web length. It is also conceivable, however, a mathematical function or an empirically determined dependence, as in the cited document US Pat. No. 7,584,699 B2 is proposed. If the peripheral speed of the format cylinder is reduced relative to the peripheral speed of the impression cylinder, the result is an extended print image; however, if the peripheral speed of the format cylinder is increased, a shortened printed image is observed.
  • Flexographic printing is a high pressure process, i. the raised areas of the printing plate or printing plate are the printing areas.
  • the printing plates consist of flexible materials such as polymers, so that the printing plates can handle the bending stress caused by the slightly different peripheral speeds of the format cylinder and counterpressure roller.
  • each monochrome subpictures are to be printed to match the expression made by the first format cylinder with its changed speed.
  • the peripheral speeds of these format cylinders should be identical at least after a few revolutions.
  • not only at least one other, but all other format cylinders are changed simultaneously in their peripheral speeds with the first format cylinder.
  • the circumferential velocities mean the desired circumferential speeds.
  • the target peripheral speeds depend on the peripheral speed of the impression cylinder or cylinders and are only slightly changed relative to its or their peripheral speeds.
  • the actual peripheral speeds of the format cylinders can deviate from the desired speeds, as will be described below, since even further adjustment parameters influence the actual circumferential speed.
  • a well-adjusted longitudinal register ensures that the individual colors of a printed image are printed one above the other and thus form the desired printed image.
  • At least part of the printed image printed by the first format cylinder has the original circumferential speed, that is, the original print length. If another format cylinder, which has already been operated at a modified printing speed, now prints over this printed image, an error inevitably occurs in the longitudinal register. In this way waste is produced, which should be avoided.
  • a suitable measure to avoid waste is to control the other format cylinder as follows: Simultaneously with the specification of a new target peripheral speed, the longitudinal register is controlled, in the manner that despite changing the peripheral speed, the longitudinal register is maintained or at least only briefly disturbed.
  • Entirely without loss of waste can be managed if the control of the longitudinal register is carried out so that this also makes a change in the target peripheral speed, wherein the predetermined by the longitudinal register target peripheral speed in terms of magnitude is just as large as the change in the target peripheral speed for generating another print length, but this change counteracts. As a result, a peripheral speed which corresponds to the original peripheral speed remains.
  • the control of the longitudinal register is maintained until the point on the substrate at which the printed image begins with a changed printing length reaches the nip between the other format cylinder and the impression cylinder.
  • a control and / or regulation program which comprises a plurality of procedures.
  • procedures in the context of this application individual, program parts referred to fulfill a specific function. Such procedures can also be called functions. In the field of computer science but can also find other names for this.
  • Such a procedure can be used, for example, to control the target peripheral speeds and, for example, to receive the desired print length as input parameters.
  • a result would then be a value for the target circumferential speed, which is then transferred to the program part responsible for the position control of a format roller.
  • Another procedure intended for longitudinal registration of master cylinders may also set the value of the target peripheral speed calculate and this value provided with opposite sign and also calculate the length of time for the length of the longitudinal register setting in dependence on the position of the driven forme cylinder. These two values are also transferred to the program part responsible for the position control.
  • the two values for the differences of the target circumferential speed and the current peripheral speed of the impression cylinder are added to the current speed as a function of the advanced time t. If the time .DELTA.t has expired, the difference between the original peripheral speed and the target speed for changing the longitudinal register is equal to zero, so that the affected format cylinder is now in registration with the new target circumferential speed required to change the printing length, without the print image would have ever run out of the register.
  • the invention further comprises a control and / or regulating device, in which the program parts described above are implemented, and a printing machine, which comprises a said control and / or regulating device.
  • This printing machine is also equipped with one or more, a printing material transporting counter-pressure cylinders to which or to which one or more format cylinders are adjustable. In a particularly advantageous embodiment, this is a central cylinder flexographic printing machine.
  • the printing material is in particular a plastic web.
  • FIG. 1 shows a schematic representation of a flexographic printing machine 1, which comprises a central impression cylinder 2.
  • a printing material web 3 is fed in the direction of the arrow T, which is placed on the impression cylinder 2 by means of a pressure roller 4.
  • To the circumference of the impression cylinder 2 are several, in the illustrated embodiment 4, format cylinder 5, 6, 7, 8 distributed, each printing a color.
  • components of each printing machine include ink supply means for supplying the raised printing areas of the form cylinder with ink.
  • such a device generally comprises an anilox roller for coloring the printing areas and a doctoring chamber cooperating with the anilox roller.
  • FIG. 1 Components of the flexographic printing machine 1 shown, which serve the drive of cylinders.
  • the impression cylinder 2 is driven by its own drive 12.
  • the letter M stands for "motor". Even if the motor is operated with a given power that should lead to a constant speed, it can lead to synchronized fluctuations.
  • a speed detection device is provided, which is designated overall by the reference numeral 22 and which comprises a sensor 23, with which the markings 24 which are arranged on the impression cylinder 2, can be detected.
  • the detected markings are supplied to the evaluation and control unit 26 via a data line 25, which evaluates therefrom the markings detected per unit of time and from this determines the actual angular and circumferential speed. If there is a deviation from the desired angular velocity, the motor can be controlled accordingly, so that the target and actual speeds equalize. In this case, a controlled system is available. From the evaluation and control unit 26 performs a control line to the engine 12th
  • the individual format cylinders should in flexographic printing presses of the prior art at any time have the same peripheral speeds as the central impression cylinder 2.
  • the same controlled system is provided as for the impression cylinder 2.
  • Such a controlled system is shown only for the format cylinder 5, but at other format cylinders also available.
  • the drive carries in the case of the format cylinder 5, the reference numeral 15.
  • the control device here also includes the markers 31, the sensor 32 and the control line 33, which forwards the number of measured by the sensor marking to the evaluation and control unit 26. The latter sets these measurements in relation to a time unit and in turn determines the current peripheral speed of the format cylinder 5.
  • the current peripheral speed is compared with a desired speed, in which case the target speed is not a predetermined speed, but the actual speed of the impression cylinder. This procedure ensures that the peripheral speeds of the impression cylinder and the format cylinder are always the same.
  • the circumferential speeds of the format cylinders 5, 6, 7, 8 are changed relative to the impression cylinder, the corresponding differences are then added to the desired speeds of the format cylinders. These differences can result in a higher peripheral speed, resulting in a slightly shortened print length. Conversely, a reduced peripheral speeds leads to a prolonged printed image.
  • FIG. 2 An embodiment of a circuit or a program sequence is in the FIG. 2 shown.
  • the individual boxes of this figure are accordingly to be understood as circuit components or parts of a program, for example as procedures.
  • This controls the drive of a format cylinder.
  • the basis of the control of the drive the current peripheral speed of the impression cylinder.
  • path GDZ the distance traveled per unit time path of the impression cylinder
  • the total distance is multiplied by a factor which is greater or less than 1. This is done in the multiplier shown as box 500.
  • the result is a guideline that the scope of the format cylinder has to cover in a unit of time.
  • the motor M is controlled according to this specification.
  • FIG. 3 a procedure is shown, with the speed difference for all format cylinder réelleschbar at the same time, with a longitudinal register deviation is avoided.
  • the speed difference ⁇ v to the new speed v 2 is determined.
  • a resulting velocity curve is in the FIG. 3 a) shown, in which simply the peripheral speed of the respective forme cylinder was changed from v 1 to v 2 at a time t start .
  • this difference path is taken into account as a longitudinal register path to be corrected.
  • this longitudinal register path is now taken into account for as long as the printing material at a given peripheral speed is taken into account by the first format cylinder (see reference numeral 5 in FIG. 1 ) needs to be adjusted to the format cylinder.
  • the time required for this results at a given circumferential speed of the impression cylinder, which is equal to v 1 is, from the radius of the impression cylinder, which is a constant. Accordingly, the longitudinal register path is considered until the time t end .
  • time t start is the same for all format cylinders, the time t end depends on the spatial position of the respective format cylinder relative to the impression cylinder. Since no sensory measured values are used in this procedure for the adjustment of the longitudinal register, one can speak here of a correction of a virtual longitudinal register error. Such a correction of the longitudinal register error is in the FIG. 3 b) shown.
  • FIG. 3 c) now shows the resulting velocity curve for the considered format cylinder.
  • the speed difference ⁇ v and the speed change caused by the longitudinal register correction cancel each other out, so that the peripheral speed v 1 is maintained between the times t start and t end .
  • a printing press is the subject of the invention, in which an evaluation and control unit 26 is equipped with the described functions. So this evaluation and

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Rotary Presses (AREA)

Description

Die Erfindung betrifft ein Verfahren zum Einstellen der Drucklänge eines Druckbildes in einer Mehrfarbenrotationsdruckmaschine nach dem Oberbegriff des Anspruchs 1.The invention relates to a method for adjusting the printing length of a printed image in a multicolor rotary printing press according to the preamble of claim 1.

In einer Mehrfarbenrotationsdruckmaschine wird das mehrfarbige Druckbild dadurch auf den Bedruckstoff übertragen, dass nacheinander mehrere Druckzylinder, die so genannten Formatzylinder, jeweils eine Farbe auf dem Bedruckstoff übertragen, wobei die die Druckfarbe tragenden Bereiche der Formatzylinder diese Druckfarbe ganz oder teilweise an den Bedruckstoff abgeben. Mehrere sich überlagernder Farben führen schließlich zum Druckbild.In a multicolor rotary printing machine, the multicolor printed image is transferred to the printing substrate by successively transferring a plurality of printing cylinders, the so-called format cylinders, one color each onto the printing substrate, wherein the areas of the format cylinders carrying the ink deliver this ink completely or partially to the printing material. Several overlapping colors eventually lead to the printed image.

Der Bedruckstoff wird dabei über einen oder mehrere Gegendruckzylinder geführt. Ist ein einziger Gegendruckzylinder vorhanden, so werden die Formatzylinder an diesen Gegendruckzylinder angestellt, so dass die Druckfarben möglicht vollständig übertragen werden. Sind mehrere Gegendruckzylinder vorhanden, so wird oft jedem Gegendruckzylinder ein einziger Formatzylinder zugeordnet. Es können jedem Gegendruckzylinder aber auch zwei oder noch mehr Formatzylinder zugeordnet sein.The printing material is guided over one or more impression cylinders. If a single counter-pressure cylinder is present, then the format cylinders are employed on this counter-pressure cylinder, so that the printing inks can be completely transferred as far as possible. If there are several impression cylinders, then each impression cylinder is often assigned a single format cylinder. It can be assigned to each impression cylinder but also two or even more format cylinder.

In der Regel sollten die Umfangsgeschwindigkeiten aller Formatzylinder identisch sein und auch mit der oder den Umfangsgeschwindigkeiten des oder der Gegendruckzylinder übereinstimmen. Bei den in heutiger Zeit genutzten Druckmaschinen ist jeder einzelner Zylinder mit einem eigenen, lagegeregelten Antrieb ausgestattet, so dass die Umfangsgeschwindigkeit sehr genau eingestellt werden können. Bei gleichen Umfangsgeschwindigkeiten aller am Druckprozess beteiligten Walzen wird eine hohe Druckqualität erzielt.In general, the peripheral speeds of all format cylinders should be identical and also coincide with the or the peripheral speeds of the impression cylinder or cylinders. In the printing presses used today, each individual cylinder is its own, position-controlled Drive equipped so that the peripheral speed can be set very accurately. At the same peripheral speeds of all rollers involved in the printing process, a high print quality is achieved.

Für einen gegebenen Umfang der Formatzylinder, der jeweils auch identisch sein kann, ergibt sich durch ein einmaliges Abrollen des Formatzylinders die so genannte Drucklänge auf dem Bedruckstoff. Soll die Drucklänge verändert werden, so ist in der Regel der Formatzylinder oder Teile hiervon - insbesondere der so genannte Sleeve - gegen einen größeren oder kleineren Umfangs auszutauschen.For a given size of the format cylinder, which may also be identical, results from a one-time unwinding of the format cylinder, the so-called print length on the substrate. If the print length is to be changed, the format cylinder or parts thereof - in particular the so-called sleeve - is usually to be exchanged for a larger or smaller circumference.

Die Druckschrift US 7 684 699 B2 schlägt nun jedoch vor, die Umfangsgeschwindigkeit der Formatzylinder relativ zur Umfangsgeschwindigkeit des oder der Gegendruckzylinder zu verändern, um so die Drucklänge variieren zu können. Es wird davon ausgegangen, dass eine Veränderung von weniger als 1 % der ursprünglichen Drucklänge sich nicht oder zumindest nicht merklich auf die Druckqualität auswirkt. Der Hintergrund zu diesem Vorschlag ist, dass sich der bedruckte und wieder aufgewickelte Bedruckstoff, der aus Kunststoff besteht, im Laufe der Zeit in seiner Länge verändert. So kann es zu Relaxationseffekten kommen, die die Folie schrumpfen oder sich ausdehnen lassen. Um danach dennoch ein Druckbild der gewünschten Länge beobachten zu können, wird die Schrumpfung oder Dehnung antizipiert und im Druckprozess ein entsprechend verlängertes oder verkürztes Druckbild erzeugt, wobei die Formatzylinder nicht ausgetauscht werden.The publication US Pat. No. 7,684,699 B2 suggests, however, to change the peripheral speed of the format cylinder relative to the peripheral speed of the impression cylinder or cylinders, so as to be able to vary the printing length. It is assumed that a change of less than 1% of the original print length will not affect the print quality, or at least not noticeably. The background to this proposal is that the printed and rewound substrate, which is made of plastic, changes in length over time. This can lead to relaxation effects that shrink or stretch the film. In order to still be able to observe a printed image of the desired length, the shrinkage or stretching is anticipated and generated in the printing process, a correspondingly extended or shortened printed image, the format cylinder are not replaced.

Auch wenn heutige Druckmaschinen für jeden Zylinder einen lagegeregelten Antrieb umfassen, kann eine solche veränderte Einstellung der Umfangsgeschwindigkeiten in der Praxis nur im Stillstand der Druckmaschine vorgenommen werden. Dies ist sehr zeitraubend und damit kostenintensiv.Even if today's printing presses comprise a position-controlled drive for each cylinder, in practice such an altered setting of the peripheral speeds can only be made when the printing machine is at a standstill. This is very time consuming and therefore costly.

In der Offenlegungsschrift DE 195 27 199 A1 jedoch bereits vorgeschlagen, bei lagegeregelten Antrieben die Einstellung der Umfangsgeschwindigkeiten auch während des Druckbetriebes vorzunehmen. Auch den Druckschriften WO 2006/134070 A2 , WO 2010/07346 A1 und EP 0 796 733 A1 ist dieser Vorschlag zur entnehmen.In the published patent application DE 195 27 199 A1 However, it has already been proposed to make the setting of the peripheral speeds during the printing operation in position-controlled drives. Also the pamphlets WHERE 2006/134070 A2 . WO 2010/07346 A1 and EP 0 796 733 A1 this proposal can be found on.

Jedoch wird anschließend das Register nachgeregelt, was sowohl in der DE 195 27 199 A1 als auch in der EP 2 392 459 A1 beschrieben wird. Das Nachregeln des Registers führt jedoch zu einem Makulaturanfall.However, the register is subsequently readjusted, which is reflected both in the DE 195 27 199 A1 as well as in the EP 2 392 459 A1 is described. The readjustment of the register, however, leads to a waste of paper.

Die Aufgabe der vorliegenden Erfindung ist es daher, ein Verfahren vorzuschlagen, mit welchem der Makulaturanfall vermieden wird.The object of the present invention is therefore to propose a method with which the spoiling accident is avoided.

Die Aufgabe wird gelöst durch die Merkmale des Anspruchs 1.The object is solved by the features of claim 1.

Ausgehend von einem Verfahren nach dem Oberbegriff des Anspruchs 1 wird erfindungsgemäß die Umfangsgeschwindigkeit des ersten Formatzylinders während des laufenden Druckbetriebes relativ zur Umfangsgeschwindigkeit des Gegendruckzylinders verändert. Hierzu kann der Steuer- und/oder Regeleinrichtung, die vorteilhafterweise als Programm auf einem Steuer- und Regelcomputer läuft, der Betrag der gewünschten Umfangsgeschwindigkeit des Formzylinders oder die gewünschte Abweichung von der Umfangsgeschwindigkeit des Gegendruckzylinders mitgeteilt werden. Dies kann manuell oder gemäß einer Tabelle, die solche Werte in Abhängigkeit von der Zeit und/oder der Länge der bereits bedruckten Bahnlänge enthält, erfolgen. Denkbar ist aber auch eine mathematische Funktion oder eine empirisch ermittelte Abhängigkeit, wie es in der genannten Druckschrift US 7 584 699 B2 vorgeschlagen wird. Wird die Umfangsgeschwindigkeit des Formatzylinders relativ zur Umfangsgeschwindigkeit des Gegendruckzylinders verringert, so ergibt sind ein verlängertes Druckbild; wird die Umfangsgeschwindigkeit des Formatzylinders jedoch vergrößert, so beobachtet man ein verkürztes Druckbild.Starting from a method according to the preamble of claim 1, the peripheral speed of the first format cylinder is changed according to the invention during the current printing operation relative to the peripheral speed of the impression cylinder. For this purpose, the control and / or regulating device, which advantageously runs as a program on a control computer, the amount of the desired peripheral speed of the forme cylinder or the desired deviation from the peripheral speed of the impression cylinder can be communicated. This can be done manually or according to a table which contains such values as a function of the time and / or the length of the already printed web length. It is also conceivable, however, a mathematical function or an empirically determined dependence, as in the cited document US Pat. No. 7,584,699 B2 is proposed. If the peripheral speed of the format cylinder is reduced relative to the peripheral speed of the impression cylinder, the result is an extended print image; however, if the peripheral speed of the format cylinder is increased, a shortened printed image is observed.

Dieses Verfahren ist besonders vorteilhaft in einer Flexodruckmaschine anwendbar. Bei dem Flexodruck handelt es sich um ein Hochdruckverfahren, d.h. die erhabenen Bereiche der Druckplatte oder des Druckklischees sind die druckenden Bereiche. Die Druckklischees bestehen dabei aus flexiblen Materialien wie etwa Polymeren, so dass die Druckklischees die durch die leicht unterschiedlichen Umfangsgeschwindigkeiten von Formatzylinder und Gegendruckwalze hervorgerufene Biegebeanspruchung gut verkraften können.This method is particularly advantageous in a flexographic printing machine applicable. Flexographic printing is a high pressure process, i. the raised areas of the printing plate or printing plate are the printing areas. The printing plates consist of flexible materials such as polymers, so that the printing plates can handle the bending stress caused by the slightly different peripheral speeds of the format cylinder and counterpressure roller.

Eine Schwierigkeit ergibt sich nun, wenn bei einem Mehrfarbendruck weitere, jeweils einfarbige Teilbilder passend zum durch den ersten Formatzylinder mit seiner veränderten Geschwindigkeit erfolgten Ausdruck gedruckt werden soll. In weiterer Ausgestaltung ist daher vorgesehen, gleichzeitig mit Veränderung der Umfangsgeschwindigkeit des ersten Formatzylinders auch die Umfangsgeschwindigkeit zumindest eines weiteren Formatzylinders zu verändern. Dabei sollten die Umfangsgeschwindigkeiten dieser Formatzylinder zumindest nach wenigen Umdrehungen identisch sein.A difficulty now arises when in a multi-color printing more, each monochrome subpictures are to be printed to match the expression made by the first format cylinder with its changed speed. In a further embodiment, it is therefore provided, at the same time as the peripheral speed of the first format cylinder changes, that the peripheral speed of at least one further format cylinder is also increased change. The peripheral speeds of these format cylinders should be identical at least after a few revolutions.

In weiterer Ausgestaltung der Erfindung werden nicht nur zumindest ein weiterer, sondern alle weiteren Formatzylinder gleichzeitig mit dem ersten Formatzylinder in ihren Umfangsgeschwindigkeiten verändert.In a further embodiment of the invention, not only at least one other, but all other format cylinders are changed simultaneously in their peripheral speeds with the first format cylinder.

Bei dem bisher beschriebenen, erfindungsgemäßen Verfahren sind mit den Umfangsgeschwindigkeiten die Sollumfangsgeschwindigkeiten gemeint. Dabei hängen die Soll-Umfangsgeschwindigkeiten von der Umfangsgeschwindigkeit des oder der Gegendruckzylinder ab und sind lediglich relativ zu dessen oder deren Umfangsgeschwindigkeiten leicht verändert. Die tatsächlichen Umfangsgeschwindigkeiten der Formatzylinder können dabei jedoch von den Sollgeschwindigkeiten abweichen, wie im Folgenden beschrieben wird, da noch weitere Stellparameter die tatsächlichen Umfangsgeschwindigkeit beeinflussen.In the method according to the invention described so far, the circumferential velocities mean the desired circumferential speeds. In this case, the target peripheral speeds depend on the peripheral speed of the impression cylinder or cylinders and are only slightly changed relative to its or their peripheral speeds. However, the actual peripheral speeds of the format cylinders can deviate from the desired speeds, as will be described below, since even further adjustment parameters influence the actual circumferential speed.

Bei einer gleichzeitigen Veränderung der Soll-Umfangsgeschwindigkeit verschiedener Formatzylinder ergibt sich das Problem, dass nun das Längsregister in der Regel nicht mehr passend eingestellt ist. Ein gut eingestelltes Längsregister stellt sicher, dass die einzelnen Farben eines Druckbildes übereinander gedruckt werden und sich so zu dem gewünschten Druckbild zusammensetzen.In a simultaneous change in the target peripheral speed of different format cylinder, the problem arises that now the longitudinal register is usually not adjusted properly. A well-adjusted longitudinal register ensures that the individual colors of a printed image are printed one above the other and thus form the desired printed image.

Bei gleichzeitiger Veränderung der Soll-Umfangsgeschwindigkeit zumindest zweier Formatzylinder weist zumindest ein Teil des vom ersten Formatzylinder ausgedruckten Druckbildes mit der ursprünglichen Umfangsgeschwindigkeit, also mit ursprünglicher Drucklänge auf. Druckt nun ein weiterer, bereits mit veränderter Druckgeschwindigkeit betriebener Formatzylinder über dieses Druckbild, so kommt es unweigerlich zu einem Fehler im Längsregister. Auf diese Weise wird Makulatur produziert, was vermieden werden sollte.With simultaneous change in the target circumferential speed of at least two format cylinders, at least part of the printed image printed by the first format cylinder has the original circumferential speed, that is, the original print length. If another format cylinder, which has already been operated at a modified printing speed, now prints over this printed image, an error inevitably occurs in the longitudinal register. In this way waste is produced, which should be avoided.

Eine geeignete Maßnahme, um Makulatur zu vermeiden, ist es, den weiteren Formatzylinder wie folgt anzusteuern: Gleichzeitig mit der Vorgabe einer neuen Soll-Umfangsgeschwindigkeit wird das Längsregister angesteuert, in der Weise, dass trotz veränderter Umfangsgeschwindigkeit das Längsregister erhalten bleibt oder zumindest nur kurzzeitig gestört ist.A suitable measure to avoid waste, it is to control the other format cylinder as follows: Simultaneously with the specification of a new target peripheral speed, the longitudinal register is controlled, in the manner that despite changing the peripheral speed, the longitudinal register is maintained or at least only briefly disturbed.

Ganz ohne Makulaturverlust lässt sich auskommen, wenn die Ansteuerung des Längsregisters so erfolgt, dass dieses ebenfalls eine Änderung der Soll-Umfangsgeschwindigkeit vornimmt, wobei die von dem Längsregister vorgegebene Soll-Umfangsgeschwindigkeit dem Betrage nach genauso groß ist wie die Änderung der Soll-Umfangsgeschwindigkeit zur Erzeugung einer anderen Drucklänge, dieser Änderung aber entgegenwirkt. Im Ergebnis verbleibt eine Umfangsgeschwindigkeit, die der ursprünglichen Umfangsgeschwindigkeit entspricht. Die Ansteuerung des Längsregisters bleibt so lange erhalten, bis der Punkt auf dem Bedruckstoff, an dem das Druckbild mit veränderter Drucklänge beginnt, den Walzenspalt zwischen dem weiteren Formatzylinder und dem Gegendruckzylinder erreicht. Dieser Zeitpunkt ist einfach zu berechnen und hängt über Δt = ΔL/vGegendruck lediglich von der Geschwindigkeit des Gegendruckzylinders (vGegendruck)ab, wobei ΔL der Abstand der Walzenspalte der beiden Formatzylinder mit dem Gegendruckzylinder, gemessen entlang der Oberfläche des Gegendruckzylinders, ist.Entirely without loss of waste can be managed if the control of the longitudinal register is carried out so that this also makes a change in the target peripheral speed, wherein the predetermined by the longitudinal register target peripheral speed in terms of magnitude is just as large as the change in the target peripheral speed for generating another print length, but this change counteracts. As a result, a peripheral speed which corresponds to the original peripheral speed remains. The control of the longitudinal register is maintained until the point on the substrate at which the printed image begins with a changed printing length reaches the nip between the other format cylinder and the impression cylinder. This time is easy to calculate and depends on .DELTA.t = .DELTA.L / v back pressure only on the speed of the impression cylinder (v back pressure ), where .DELTA.L is the distance of the nips of the two form cylinder with the impression cylinder, measured along the surface of the impression cylinder.

In einer bevorzugten Ausführungsform der Erfindung wird ein Steuer- und/oder Regelungsprogramm genutzt, welches mehrere Prozeduren umfasst. Als Prozeduren werden im Rahmen dieser Anmeldung einzelne, Programmteile bezeichnet, die eine bestimmte Funktion erfüllen. Solche Prozeduren können aber auch als Funktionen bezeichnet werden. Im Bereich der Informatik können sich aber auch andere Bezeichnungen hierfür finden.In a preferred embodiment of the invention, a control and / or regulation program is used which comprises a plurality of procedures. As procedures in the context of this application, individual, program parts referred to fulfill a specific function. Such procedures can also be called functions. In the field of computer science but can also find other names for this.

Eine solche Prozedur kann beispielsweise der Steuerung der Soll-Umfangsgeschwindigkeiten dienen und beispielsweise als Eingabeparameter die Soll-Drucklänge erhalten. Ein Ergebnis wäre dann ein Wert für die Soll-Umfangsgeschwindigkeit, der dann dem für die Lageregelung einer Formatwalze zuständigen Programmteil übergeben wird.Such a procedure can be used, for example, to control the target peripheral speeds and, for example, to receive the desired print length as input parameters. A result would then be a value for the target circumferential speed, which is then transferred to the program part responsible for the position control of a format roller.

Eine weitere Prozedur, die für die Längsregistereinstellung von Formatzylindern gedacht ist, kann den Wert der Soll-Umfangsgeschwindigkeit ebenfalls berechnen und diesen Wert mit entgegen gesetztem Vorzeichen versehen und auch die Zeitdauer für die Länge der Längsregistereinstellung in Abhängigkeit von der Position des anzusteuernden Formatzylinders berechnen. Auch diese beiden Werte werden dem für die Lageregelung zuständigen Programmteil übergeben.Another procedure intended for longitudinal registration of master cylinders may also set the value of the target peripheral speed calculate and this value provided with opposite sign and also calculate the length of time for the length of the longitudinal register setting in dependence on the position of the driven forme cylinder. These two values are also transferred to the program part responsible for the position control.

Im Programmteil für die Lageregelung eines bestimmten Formatzylinders erfolgt nun die Addition der beiden Werte für die Differenzen der Sollumfangsgeschwindigkeit und der aktuellen Umfangsgeschwindigkeit des Gegendruckzylinders zur aktuellen Geschwindigkeit in Abhängigkeit von der fortgeschrittenen Zeit t. Ist die Zeit Δt abgelaufen, ist die Differenz zwischen der ursprünglichen Umfangsgeschwindigkeit und der Soll-Geschwindigkeit zur Änderung des Längsregisters gleich Null, so dass der betroffene Formatzylinder nun registergerecht mit der neuen Soll-Umfangsgeschwindigkeit läuft, die zur Änderung der Drucklänge erforderlich ist, ohne dass das Druckbild jemals aus dem Register gelaufen wäre.In the program part for the position control of a specific format cylinder, the two values for the differences of the target circumferential speed and the current peripheral speed of the impression cylinder are added to the current speed as a function of the advanced time t. If the time .DELTA.t has expired, the difference between the original peripheral speed and the target speed for changing the longitudinal register is equal to zero, so that the affected format cylinder is now in registration with the new target circumferential speed required to change the printing length, without the print image would have ever run out of the register.

Die Erfindung umfasst weiterhin eine Steuer- und/oder Regeleinrichtung, in welcher die zuvor beschriebenen Programmteile implementiert sind sowie eine Druckmaschine, die eine genannte Steuer- und/oder Regeleinrichtung umfasst. Diese Druckmaschine ist zudem mit einem oder mehreren, eine Bedruckstoffbahn transportierenden Gegendruckzylindern ausgestattet, an welchen oder an welche jeweils ein oder mehrere Formatzylinder anstellbar sind. In einer besonders vorteilhaften Ausführungsform handelt es sich hier um eine Zentralzylinder-Flexodruckmaschine. Bei dem Bedruckstoff handelt es sich insbesondere um eine Kunststoffbahn.The invention further comprises a control and / or regulating device, in which the program parts described above are implemented, and a printing machine, which comprises a said control and / or regulating device. This printing machine is also equipped with one or more, a printing material transporting counter-pressure cylinders to which or to which one or more format cylinders are adjustable. In a particularly advantageous embodiment, this is a central cylinder flexographic printing machine. The printing material is in particular a plastic web.

Weitere Ausführungsbeispiele ergeben sich aus den weiteren Ansprüchen und der Zeichnung. In dieser zeigen die einzelnen Figuren:

Fig. 1
Schematische Ansicht einer Flexodruckmaschine mit Regelungseinrichtung
Fig. 2
Ablauf eines erfindungsgemäßen Verfahrens zum Einstellen der Drucklänge
Fig. 3
Verschiedene Geschwindigkeitskurven eines Formatzylinders bei Beeinflussung dessen Geschwindigkeit
Further embodiments will become apparent from the other claims and the drawings. In this the individual figures show:
Fig. 1
Schematic view of a flexographic printing machine with control device
Fig. 2
Sequence of a method according to the invention for adjusting the print length
Fig. 3
Different speed curves of a format cylinder influencing its speed

Die Figur 1 zeigt eine schematische Darstellung einer Flexodruckmaschine 1, die einen zentralen Gegendruckzylinder 2 umfasst. In Richtung des Pfeils T wird eine Bedruckstoffbahn 3 in Richtung des Pfeils T zugeführt, die mittels einer Anpresswalze 4 auf den Gegendruckzylinder 2 aufgelegt wird. Um den Umfang des Gegendruckzylinders 2 sind mehrere, in dem gezeigten Ausführungsbeispiel 4, Formatzylinder 5, 6, 7, 8 verteilt, die jeweils eine Farbe verdrucken. Es wurde jedoch nur der erste nicht gezeigt, aber Bestandteil einer jeden Druckmaschine sind Einrichtungen zur Farbzuführung, mit denen die erhabenen druckenden Bereiche der Formatzylinder mit Druckfarbe versorgt werden. In Flexodruckmaschinen umfasst eine solche Einrichtung in der Regel eine Rasterwalze zur Einfärbung der druckenden Bereiche und eine mit der Rasterwalze zusammenwirkende Rakelkammer.The FIG. 1 shows a schematic representation of a flexographic printing machine 1, which comprises a central impression cylinder 2. In the direction of the arrow T, a printing material web 3 is fed in the direction of the arrow T, which is placed on the impression cylinder 2 by means of a pressure roller 4. To the circumference of the impression cylinder 2 are several, in the illustrated embodiment 4, format cylinder 5, 6, 7, 8 distributed, each printing a color. However, only the first one has not been shown, but components of each printing machine include ink supply means for supplying the raised printing areas of the form cylinder with ink. In flexographic printing machines, such a device generally comprises an anilox roller for coloring the printing areas and a doctoring chamber cooperating with the anilox roller.

Weiterhin sind in der Figur 1 Bestandteile der Flexodruckmaschine 1 gezeigt, die dem Antrieb von Zylindern dienen. So wird der Gegendruckzylinder 2 von einem eigenen Antrieb 12 angetrieben. In der Darstellung steht der Buchstabe M für "Motor". Auch wenn der Motor mit einer vorgegebenen Leistung betrieben wird, die zu einer konstanten Drehzahl führen sollte, kann es zu Gleichlaufschwankungen kommen. Um die tatsächliche Drehzahl feststellen zu können, ist eine Drehzahlerfassungseinrichtung vorgesehen, die insgesamt mit dem Bezugszeichen 22 bezeichnet ist und die einen Sensor 23 umfasst, mit welchem die Markierungen 24, welche am Gegendruckzylinder 2 angeordnet sind, erfassbar sind. Die erfassten Markierungen werden der Auswerte- und Steuereinheit 26 über eine Datenleitung 25 zugeführt, die daraus die pro Zeiteinheit erfassten Markierungen auswertet und hieraus die tatsächliche Winkel- und Umfangsgeschwindigkeit ermittelt. Sollte sich eine Abweichung zu der gewünschten Winkelgeschwindigkeit ergeben, kann der Motor entsprechend angesteuert werden, so dass sich Soll- und Istgeschwindigkeiten angleichen. In diesem Fall ist also eine Regelstrecke vorhanden. Von der Auswerte- und Steuereinheit 26 führt eine Steuerleitung zum Motor 12.Furthermore, in the FIG. 1 Components of the flexographic printing machine 1 shown, which serve the drive of cylinders. Thus, the impression cylinder 2 is driven by its own drive 12. In the illustration, the letter M stands for "motor". Even if the motor is operated with a given power that should lead to a constant speed, it can lead to synchronized fluctuations. In order to determine the actual speed, a speed detection device is provided, which is designated overall by the reference numeral 22 and which comprises a sensor 23, with which the markings 24 which are arranged on the impression cylinder 2, can be detected. The detected markings are supplied to the evaluation and control unit 26 via a data line 25, which evaluates therefrom the markings detected per unit of time and from this determines the actual angular and circumferential speed. If there is a deviation from the desired angular velocity, the motor can be controlled accordingly, so that the target and actual speeds equalize. In this case, a controlled system is available. From the evaluation and control unit 26 performs a control line to the engine 12th

Die einzelnen Formatzylinder sollen in Flexodruckmaschinen des Standes der Technik zu jedem Zeitpunkt die gleichen Umfangsgeschwindigkeiten aufweisen wie der zentrale Gegendruckzylinder 2. Dazu ist die gleiche Regelstrecke vorgesehen wie für den Gegendruckzylinder 2. Eine solche Regelstrecke ist zwar nur für den Formatzylinder 5 dargestellt, ist aber bei anderen Formatzylindern ebenfalls vorhanden. Zunächst ist es wichtig, dass jeder Formatzylinder durch einen eigenen Antrieb in Drehung versetzt wird. Der Antrieb trägt im Falle des Formatzylinders 5 das Bezugszeichen 15. Die Regeleinrichtung umfasst auch hier die Markierungen 31, den Sensor 32 und die Steuerleitung 33, die die Anzahl der durch den Sensor gemessenen Markierung an die Auswerte- und Steuereinheit 26 weiterleitet. Letztere setzt diese Messwerte in Bezug mit einer Zeiteinheit und ermittelt wiederum die aktuelle Umfangsgeschwindigkeit des Formatzylinders 5. Auch wird die aktuelle Umfangsgeschwindigkeit mit einer Sollgeschwindigkeit verglichen, wobei in diesem Fall die Sollgeschwindigkeit keine vorgegebene Geschwindigkeit ist, sondern die Istgeschwindigkeit des Gegendruckzylinders. Durch diese Vorgehensweise wird sichergestellt, dass die Umfangsgeschwindigkeiten von Gegendruckzylinder und Formatzylindern stets gleich sind.The individual format cylinders should in flexographic printing presses of the prior art at any time have the same peripheral speeds as the central impression cylinder 2. For this purpose, the same controlled system is provided as for the impression cylinder 2. Such a controlled system is shown only for the format cylinder 5, but at other format cylinders also available. First, it is important that each format cylinder is rotated by its own drive in rotation. The drive carries in the case of the format cylinder 5, the reference numeral 15. The control device here also includes the markers 31, the sensor 32 and the control line 33, which forwards the number of measured by the sensor marking to the evaluation and control unit 26. The latter sets these measurements in relation to a time unit and in turn determines the current peripheral speed of the format cylinder 5. Also, the current peripheral speed is compared with a desired speed, in which case the target speed is not a predetermined speed, but the actual speed of the impression cylinder. This procedure ensures that the peripheral speeds of the impression cylinder and the format cylinder are always the same.

Sollen nun erfindungsgemäß die Umfangsgeschwindigkeiten der Formatzylinder 5, 6, 7, 8 relativ zum Gegendruckzylinder geändert werden, so werden nun zu Sollgeschwindigkeiten der Formatzylinder die entsprechenden Differenzen hinzuaddiert. Diese Differenzen können eine höhere Umfangsgeschwindigkeit zur Folge haben, die in einer leicht verkürzten Drucklänge resultieren. Umgekehrt führt eine verringerte Umfangsgeschwindigkeiten zu einem verlängerten Druckbild.If, according to the invention, the circumferential speeds of the format cylinders 5, 6, 7, 8 are changed relative to the impression cylinder, the corresponding differences are then added to the desired speeds of the format cylinders. These differences can result in a higher peripheral speed, resulting in a slightly shortened print length. Conversely, a reduced peripheral speeds leads to a prolonged printed image.

Ein Ausführungsbeispiel einer Schaltung oder eines Programmablaufs ist in der Figur 2 gezeigt. Die einzelnen Kästchen dieser Figur sind dementsprechend als Schaltungsbestandteile oder Teile eines Programms, beispielsweise als Prozeduren, zu verstehen. Hiermit wird der Antrieb eines Formatzylinders gesteuert. Wie bereits beschrieben, ist die Grundlage der Ansteuerung des Antriebs die aktuelle Umfangsgeschwindigkeit des Gegendruckzylinders.An embodiment of a circuit or a program sequence is in the FIG. 2 shown. The individual boxes of this figure are accordingly to be understood as circuit components or parts of a program, for example as procedures. This controls the drive of a format cylinder. As already described, the basis of the control of the drive, the current peripheral speed of the impression cylinder.

Dieses ist im Kästchen 100 dargestellt, wobei hier der pro Zeiteinheit zurückgelegte Weg des Gegendruckzylinders (Weg GDZ) zugrunde gelegt wird. Bei einem Druck, bei dem noch nicht alle Formatzylinder im Register sind, wird die fehlende Wegdifferenz noch hinzuaddiert, um ein zufrieden stellendes Register zu erreichen. Die Wegedifferenz des Register wird in der Regel durch Registersensoren ermittelt, die die Druckmarken der einzelnen Farben abtasten. Die fehlende Wegdifferenz wird solange hinzuaddiert, bis das Register passt (SLängsregister). Dies ist mit dem Bezugszeichen 200 versehen. Die eigentliche Addition erfolgt im Baustein oder in der Prozedur 400.This is shown in box 100, where the distance traveled per unit time path of the impression cylinder (path GDZ) is used as the basis. At a pressure where not all of the format cylinders are still in register, the missing path difference is added to achieve a satisfactory register. The path difference of the register is usually determined by register sensors, which scan the print marks of the individual colors. The missing path difference is added until the register fits (S longitudinal register ). This is provided with the reference numeral 200. The actual addition takes place in the block or in the procedure 400.

Soll nun eine Geschwindigkeitsdifferenz zwischen Gegendruckzylinder und dem betreffenden Formatzylinder aufgeschaltet werden, so wird die Wegesumme mit einem Faktor multipliziert, der größer oder kleiner 1 ist. Dies geschieht im Multiplikator, der als Kästchen 500 gezeigt ist. Das Ergebnis ist eine Wegvorgabe, die der Umfang des Formatzylinders in einer Zeiteinheit zurückzulegen hat. Der Motor M wird gemäß dieser Vorgabe angesteuert.If now a speed difference between impression cylinder and the relevant format cylinder are switched, the total distance is multiplied by a factor which is greater or less than 1. This is done in the multiplier shown as box 500. The result is a guideline that the scope of the format cylinder has to cover in a unit of time. The motor M is controlled according to this specification.

In Figur 3 ist eine Vorgehensweise dargestellt, mit der die Geschwindigkeitsdifferenz für alle Formatzylinder zum selben Zeitpunkt aufschaltbar ist, wobei eine Längsregisterabweichung vermieden wird. Hierzu wird, ausgehend von der ursprünglichen Umfangsgeschwindigkeit v1, die Geschwindigkeitsdifferenz Δv zur neuen Geschwindigkeit v2 ermittelt. Eine resultierende Geschwindigkeitskurve ist in der Figur 3 a) dargestellt, bei der einfach die Umfangsgeschwindigkeit des betreffenden Formatzylinders von v1 auf v2 zu einem Zeitpunkt tStart umgestellt wurde.In FIG. 3 a procedure is shown, with the speed difference for all format cylinder aufzuschbar at the same time, with a longitudinal register deviation is avoided. For this purpose, starting from the original peripheral speed v 1 , the speed difference Δv to the new speed v 2 is determined. A resulting velocity curve is in the FIG. 3 a) shown, in which simply the peripheral speed of the respective forme cylinder was changed from v 1 to v 2 at a time t start .

Aus Δv wird der pro Zeiteinheit zurückgelegte Differenzweg ermittelt. Mit dem Zeitpunkt des Aufschaltens der neuen Geschwindigkeit v2, der wird dieser Differenzweg als zu korrigierender Längsregisterweg berücksichtigt. Dieser Längsregisterweg wird ab dem v1nun so lange berücksichtigt, wie der Bedruckstoff bei gegebener Umfangsgeschwindigkeit von dem ersten Formatzylinder (siehe Bezugszeichen 5 in Figur 1) zu dem einzustellenden Formatzylinder braucht. Die hierzu benötigte Zeitdauer ergibt sich bei gegebener Umfangsgschwindigkeit des Gegendruckzylinders, die ja gleich v1 ist, aus dem Radius des Gegendruckzylinders, der eine Konstante ist. Demnach wird der Längsregisterweg bis zum Zeitpunkt tEnde berücksichtigt. Während der Zeitpunkt tStart für alle Formatzylinder gleich ist, hängt der Zeitpunkt tEnde von der räumlichen Position des betreffenden Formatzylinders relativ zum Gegendruckzylinder ab. Da bei dieser Vorgehensweise für die Verstellung des Längsregisters keine sensorisch erfassten Messwerte verwendet werden, kann man hier von einer Korrektur eines virtuellen Längsregisterfehlers sprechen. Eine solche Korrektur des Längsregisterfehlers ist in der Figur 3 b) gezeigt.From Δv the distance traveled per unit of time is determined. With the time of switching on the new speed v 2 , this difference path is taken into account as a longitudinal register path to be corrected. From the v 1, this longitudinal register path is now taken into account for as long as the printing material at a given peripheral speed is taken into account by the first format cylinder (see reference numeral 5 in FIG FIG. 1 ) needs to be adjusted to the format cylinder. The time required for this results at a given circumferential speed of the impression cylinder, which is equal to v 1 is, from the radius of the impression cylinder, which is a constant. Accordingly, the longitudinal register path is considered until the time t end . While the time t start is the same for all format cylinders, the time t end depends on the spatial position of the respective format cylinder relative to the impression cylinder. Since no sensory measured values are used in this procedure for the adjustment of the longitudinal register, one can speak here of a correction of a virtual longitudinal register error. Such a correction of the longitudinal register error is in the FIG. 3 b) shown.

Die Figur 3 c) zeigt nun die daraus resultierende Geschwindigkeitskurve für den betrachteten Formatzylinder. Die Geschwindigkeitsdifferenz Δv und die durch die Längsregisterkorrektur hervorgerufene Geschwindigkeitsänderung heben sich genau auf, so dass zwischen den Zeitpunkten tStart und tEnde die Umfangsgeschwindigkeit v1 beibehalten wird.The FIG. 3 c) now shows the resulting velocity curve for the considered format cylinder. The speed difference Δv and the speed change caused by the longitudinal register correction cancel each other out, so that the peripheral speed v 1 is maintained between the times t start and t end .

Auf diese Weise wird erreicht, dass sozusagen ein Druckbild, was bereits bei der Ursprungsgeschwindigkeit im Druck war, auch vollständig bei dieser Geschwindigkeit fertig gedruckt wird. Dieser Ausdruck stellt also keine Makulatur dar.In this way, it is achieved that, as it were, a printed image, which was already printed at the original speed, is also printed completely at this speed. So this expression is not a waste.

Die beschriebene Vorgehensweise ist vorteilhaft, weil hier bei Druckmaschinen nach dem Stand der Technik regelungstechnisch nur wenig verändert werden muss, um das erfindungsgemäße Verfahren durchführen zu können. Die so genannte Drucklängenkorrektur, also die Geschwindigkeit v2 kann einfach aufgeschaltet werden. Zur Makulaturvermeidung kann nun einfach die auch im Stand der Technik vorhandene Funktion zur Längsregisterkorrektur mit berechneten (statt mit gemessenen) Werten beaufschlagt werden.The procedure described is advantageous because in printing presses according to the state of the art only a small amount of control technology has to be changed in order to be able to carry out the method according to the invention. The so-called print length correction, ie the speed v 2, can be switched on easily. To avoid waste, the function for longitudinal register correction, which is also available in the state of the art, can now be loaded with calculated (instead of measured) values.

Neben dem erfindungsgemäßen Verfahren ist auch eine Druckmaschine Gegenstand der Erfindung, bei der eine Auswerte- und Steuereinheit 26 mit den beschriebenen Funktionen ausgestattet ist. So kann diese Auswerte- undIn addition to the method according to the invention, a printing press is the subject of the invention, in which an evaluation and control unit 26 is equipped with the described functions. So this evaluation and

In der vorstehenden Beschreibung sowie den Zeichnungen und Ansprüchen sind verschiedene Ausführungsbeispiele und Merkmale eines erfindungsgemäßen Verfahrens und einer erfindungsgemäßen Vorrichtung beschrieben worden. Alle dieser Merkmale sind, soweit technisch sinnvoll, frei miteinander kombinierbar, ohne den Rahmen der vorliegenden Erfindung zu verlassen.In the foregoing description, as well as the drawings and claims, various embodiments and features of a inventive method and a device according to the invention have been described. All of these features are, as far as technically feasible, freely combinable with each other, without departing from the scope of the present invention.

Claims (5)

  1. Method for setting the printing length of a printed image in a multicolour rotary printing machine, in particular in a flexographic printing machine, having a first format cylinder and at least one further format cylinder,
    • the format cylinder being set on a common impression cylinder or on a plurality of impression cylinders, over which the printing material is guided, and
    • the circumferential speed of the first format cylinder being set relative to the circumferential speed of the impression cylinder,
    • the circumferential speed of the first format cylinder being changed relative to the circumferential speed of the impression cylinder during the running printing operation,
    • the longitudinal register also being set in the case of each format cylinder the circumferential speed of which is changed,
    characterized
    in that in the case of the relevant format cylinder, changing the circumferential speed and setting the longitudinal register are carried out simultaneously,
    in that an open-loop and closed-loop control program having at least one procedure for controlling the circumferential speed and having at least one procedure for controlling the longitudinal register is used, wherein, at the same time as the call to the procedure for controlling the circumferential speed, which uses the changed value of the circumferential speed as a new set point, the procedure for controlling the longitudinal register is also called.
  2. Method according to Claim 1,
    characterized in that
    at the same time as the circumferential speed of the first format cylinder is changed, the circumferential speed of at least one further format cylinder is also changed.
  3. Method according to the preceding claim,
    characterized in that
    at the same time as the circumferential speed of the first format cylinder is changed, the circumferential speed of all further format cylinders is also changed.
  4. Method according to one of the two preceding claims,
    characterized in that
    the first format cylinder and the at least one further format cylinder or all the further format cylinders have the same circumferential speeds.
  5. Method according to one of the preceding claims,
    characterized in that
    the change to the circumferential speed needed to set the longitudinal register has the same magnitude but the opposite sign as compared with the desired changed circumferential speed of the format cylinder.
EP13745820.4A 2012-07-31 2013-07-31 Method for setting the printing length of a printed image in a multicolor rotary printing machine Active EP2879878B8 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261677608P 2012-07-31 2012-07-31
PCT/EP2013/066127 WO2014020083A2 (en) 2012-07-31 2013-07-31 Method for setting the printing length of a printed image in a multicolor rotary printing machine

Publications (3)

Publication Number Publication Date
EP2879878A2 EP2879878A2 (en) 2015-06-10
EP2879878B1 true EP2879878B1 (en) 2016-06-15
EP2879878B8 EP2879878B8 (en) 2016-09-14

Family

ID=48948399

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13745820.4A Active EP2879878B8 (en) 2012-07-31 2013-07-31 Method for setting the printing length of a printed image in a multicolor rotary printing machine

Country Status (4)

Country Link
US (1) US9789680B2 (en)
EP (1) EP2879878B8 (en)
ES (1) ES2590654T3 (en)
WO (1) WO2014020083A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012103853B4 (en) * 2012-05-02 2022-10-13 Windmöller & Hölscher Kg Method for the parallel alignment of at least two cylinders to each other and calibration device
JP6270133B2 (en) * 2014-02-12 2018-01-31 株式会社小森コーポレーション Flexible electronic device manufacturing equipment
WO2016028801A2 (en) * 2014-08-19 2016-02-25 Mark Andy, Inc. Method and apparatus for improving the fidelity of printed or formed images compared to its original artwork
JP7156198B2 (en) * 2019-07-25 2022-10-19 株式会社村田製作所 Gravure printing device and manufacturing method of multilayer ceramic capacitor
US12007690B2 (en) 2020-06-19 2024-06-11 Eastman Kodak Company Flexographic printing with repeating tile of randomnly-positioned feature shapes
US12044970B2 (en) 2020-06-19 2024-07-23 Eastman Kodak Company Flexographic printing with repeating tile including different randomly-positioned feature shapes

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19527199C2 (en) * 1995-07-26 2002-10-31 Baumueller Nuernberg Gmbh Flexographic printing machine and its use
DE19611048A1 (en) 1996-03-20 1997-09-25 Windmoeller & Hoelscher Printing machine, preferably flexographic printing machine
US7384505B2 (en) * 2003-10-30 2008-06-10 Sca Hygiene Products Gmbh Method of manufacturing a hygiene paper product, apparatus for such manufacture and hygiene paper product
US7584699B2 (en) 2004-07-10 2009-09-08 Clopay Plastic Products Company, Inc. Method for correcting print repeat length variability in printed extensible materials and product
DE102006003013B4 (en) * 2005-06-17 2011-03-03 Koenig & Bauer Aktiengesellschaft flexographic printing
DE502007006335D1 (en) * 2006-10-23 2011-03-03 Fischer & Krecke Gmbh ROTARY PRINTING MACHINE AND METHOD FOR ADJUSTING A ROLLER OF THE SAME
US8844437B2 (en) * 2007-04-27 2014-09-30 Kimberly-Clark Worldwide, Inc. Process and system for aligning printed images with perforated sheets
GB0900431D0 (en) 2009-01-12 2009-02-11 Emerson & Renwick Ltd Printing methods and related apparatus
EP2340003B1 (en) * 2009-08-21 2013-07-24 The Procter and Gamble Company Absorbent articles having both distinct and identical graphics and apparatus and method for printing such absorbent articles
EP2392459B1 (en) * 2010-06-02 2015-09-02 Müller Martini Holding AG Method and device for register control of a printing press
ES2573838T3 (en) * 2013-10-07 2016-06-10 Comexi Group Industries, S.A.U Central printing drum printing machine

Also Published As

Publication number Publication date
US9789680B2 (en) 2017-10-17
WO2014020083A2 (en) 2014-02-06
WO2014020083A3 (en) 2014-03-27
US20150183206A1 (en) 2015-07-02
ES2590654T3 (en) 2016-11-23
EP2879878B8 (en) 2016-09-14
EP2879878A2 (en) 2015-06-10

Similar Documents

Publication Publication Date Title
EP0415881B1 (en) Combination rotary printing machine, particularly for printing securities
EP1924435B1 (en) Printing press and method for register adjustment
EP1303403B1 (en) Method for regulating the tension of a web
EP1820650B1 (en) Control of a printing press via a torsion model
DE102007008392B4 (en) Integrated quality control
DE10013876B4 (en) Method for controlling the coloring when printing with a printing machine
EP2879878B1 (en) Method for setting the printing length of a printed image in a multicolor rotary printing machine
EP2392459B1 (en) Method and device for register control of a printing press
DE102013209698A1 (en) Printing element for sheet fed press, has plate cylinder whose corrected position value is computed from setpoint position value and additive scope register desired value determined based on coordinate-dependent scope additive register
DE102011118904A1 (en) Production plant with single drive
DE102012214585B4 (en) Method for registering in each case at least one printing plate on at least two plate cylinders of a printing press and a system for register control
DE4218761A1 (en) Pre-adjustment of registration devices on rotary printing presses - involves standstill or very slow running of sheet feed while registration mark sensors are repositioned
DE102007034835A1 (en) Shaftless printing machine e.g. cardboard printing machine, operating method, involves presetting processing length of printed product by speeds of driven processing axle i.e. ink-transferring axle
DE102015017063B4 (en) Method for adapting a printed image and/or at least one cylinder cover to a change in the printing material in a printing press
EP2109577B1 (en) Printing press for printing printing-material webs and method for setting and maintaining the register of a printing press of this type
DE102007044758A1 (en) Printing substrate's color measuring method for printing machine i.e. sheet-fed printing press, involves delivering signal to color measuring device, and making color measurement on substrate after delivering signal to device
DE102015017071B4 (en) Method for adapting a printed image and/or at least one cylinder cover to a change in the printing material in a printing press
DE102015017062B4 (en) Method for adapting a printed image and/or at least one cylinder cover to a change in the printing material in a printing press
DE102015204855B4 (en) Method for adapting at least one cylinder elevator to a change of substrate in a printing machine
DE102007063852B3 (en) Integrated quality control
EP2325009B1 (en) Method for determining preset values for a colour deck of a printer
DE102013005911A1 (en) Offset printing process
EP1754598A2 (en) Process to control a machine for sheet processing

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20150302

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20160111

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: FIAMMENGHI-FIAMMENGHI, CH

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

RIN2 Information on inventor provided after grant (corrected)

Inventor name: EHRENBERG, RAINER

Inventor name: HOEWELMEYER, UWE

Inventor name: FRANKENBERG, MARIO

Inventor name: WESTHOF, FRANK

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 806287

Country of ref document: AT

Kind code of ref document: T

Effective date: 20160715

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502013003425

Country of ref document: DE

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: WESTHOF, FRANK

Owner name: HOEWELMEYER, UWE

Owner name: EHRENBERG, RAINER

Owner name: WINDMOELLER & HOELSCHER KG

Owner name: FRANKENBERG, MARIO

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20160615

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160615

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160615

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160915

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2590654

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20161123

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160615

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160916

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160615

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160615

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160615

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160615

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160615

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160615

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160615

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161015

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160615

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160615

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20161017

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502013003425

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160615

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160731

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160816

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160731

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20170331

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

26N No opposition filed

Effective date: 20170316

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160731

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160615

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160731

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160615

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20130731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160615

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160615

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160615

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160615

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160615

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160615

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 806287

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180731

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240731

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20240724

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20240806

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CZ

Payment date: 20240711

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20240722

Year of fee payment: 12