EP0089015B1 - Method of registering and attaching printing plates on the plate cylinder of flexographic multicolour printing machines - Google Patents

Method of registering and attaching printing plates on the plate cylinder of flexographic multicolour printing machines Download PDF

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Publication number
EP0089015B1
EP0089015B1 EP83102350A EP83102350A EP0089015B1 EP 0089015 B1 EP0089015 B1 EP 0089015B1 EP 83102350 A EP83102350 A EP 83102350A EP 83102350 A EP83102350 A EP 83102350A EP 0089015 B1 EP0089015 B1 EP 0089015B1
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EP
European Patent Office
Prior art keywords
printing
cylinder
flat
cameras
line
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Expired
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EP83102350A
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German (de)
French (fr)
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EP0089015A1 (en
Inventor
Manfred Hornschuh
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Windmoeller and Hoelscher KG
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Windmoeller and Hoelscher KG
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Publication of EP0089015A1 publication Critical patent/EP0089015A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/005—Attaching and registering printing formes to supports
    • 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
    • B41F13/16—Registering devices with means for displacing the printing formes on the cylinders
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/36—Means for registering or alignment of print plates on print press structure

Definitions

  • the invention relates to a method according to the preamble of patent claim 1.
  • the object of the invention is therefore to provide a method according to the preamble of claim 1, with which the clichés can be applied in a simple and easy-to-use manner to the forme cylinder in the same way, even when the clichés relative to the assembly template Experience strain distortion.
  • the method according to the invention allows all clichés to be aligned and attached to the forme cylinder in a simple, precise and identical manner while avoiding parallax errors and other errors.
  • the operation is greatly facilitated by the fact that the assembly cylinder does not have to be aligned locally to the forme cylinders in a certain way.
  • the precisely fixed arrangement of the television cameras ensures that all clichés are mounted straight on each edge on the forme cylinders in accordance with the assembly template.
  • the errors caused by the stretching during the transfer from the assembly template to the clichés is thereby excluded in that the assembly template has been drawn in a distorted manner in the printed drawing compared to the print template in accordance with the expansion of the outside of the clichés applied to the forme cylinder.
  • DE-A-21 45 844 discloses a method for checking the color separations of a multicolor image intended for the production of printing pieces, in which the color separations are checked by means of a Ferusch video system.
  • the object is achieved according to the invention by the characterizing features of the patent claim 4 solved.
  • the distortion is carried out arithmetically, so that the creation of a corresponding distorted image can be omitted.
  • programs stored in ROMs or the like can be provided interchangeably.
  • a film negative of the size to be printed on the packaging or the like is first created, which corresponds to the later printed image.
  • the distortion factor in the direction of the image generated by the cliché stretching is determined by calculation taking into account the thickness of the cliché, the layer thickness of the adhesive that connects the cliché to the forme cylinder, the diameter of the cliché cylinder and the elongation factor of the cliché material used.
  • a new negative calculated strain factor is distorted.
  • This distorted negative photo is applied to the assembly cylinder, for example stuck on with scotch tape, and illuminated. It is also conceivable to provide the assembly cylinder with a fluorescent layer below the distorted negative photo.
  • the two cameras aimed at the mounting cylinder transmit the distorted image to the associated television screen via a mixer.
  • the prepared cliché is held loosely displaceable by vacuum suction.
  • the distance between the cameras and the surface of the cliché is set up exactly according to the cameras aimed at the assembly template.
  • the cliché held by the vacuum on the forme cylinder After the cliché held by the vacuum on the forme cylinder is aligned, it can be attached by adhesive strips that are adhesive on both sides in such a way that the areas of the cliché that have not been sung are raised and the adhesive strips are placed under. In a corresponding manner, the areas of the plate previously sucked in by the vacuum can then be glued onto the forme cylinder even after the vacuum has been switched off.
  • a mounting template that already takes the distortion into account is applied to the auxiliary or mounting cylinder according to a first method
  • an undistorted photo film is applied to the mounting cylinder according to a second method.
  • This image which is fixed in the correct position on the assembly cylinder, is then scanned by means of a scanner and a distorted image is output on the monitor via a computer.
  • this distorted image which corresponds to the cliché, the edge-narrow alignment of the clichés then takes place.
  • the cliché gluing and printing machine consists of a frame 2, in which the anilox roller 3, the forme cylinder 4, the impression cylinder 5 and further guide and deflection rollers are mounted.
  • the doctor blade 7 arranged above the ink fountain 6 is placed against the anilox roller 3 in the usual way.
  • the paint circulation is provided by a reservoir 8 provided with a pump, which is connected to the paint pan in the usual way by paint lines.
  • the paper to be printed is unwound from the roll 9 and wound onto the roll 10 after printing.
  • the plate to be assembled is first movably attached to the forme cylinder 4.
  • the mounting cylinder 13 is mounted with the mounting template attached to it.
  • the television cameras 15, 16, 17, 18 are adjustably supported on a support 14 fastened to the frame 2.
  • the television cameras 15, 16 are directed to points A and B located at a distance from one another on the assembly template, while the television cameras 17, 18 are set to the corresponding points C and D of the cliché 11 to be set up of the forme cylinder 4.
  • the images recorded by the television cameras 16, 18 are displayed one above the other on the monitor 19, while the images recorded by the television cameras 15, 17 are displayed on the monitor 20.
  • the cliché 11 is moved for its establishment on the forme cylinder 4 until the images of the points A and C or B and D appear congruently on the monitors 19 and 20. As soon as the coverage of the points on the monitors 19, 20 has been determined, the cliché is finally fixed on the forme cylinder 4 for the subsequent printing.
  • the printing takes place on the paper web 9, 10 for a given color. If the proof shows the desired result, the forme cylinder 4 with the cliché 11 is dismantled and used for the production in the printing unit of a known multi-cylinder flexographic printing machine.
  • a next forme cylinder for a different color is then inserted into the cliché gluing and printing machine described, the cliché being aligned and assembled in the manner described, before a test print is also carried out and this cylinder is also used in the production machine.
  • the clichés for all other forme cylinders are prepared one after the other in the same way.
  • the clichés can also be set up and attached to the forme cylinder in the printing units in which the forme cylinders remain for the subsequent printing.

Description

Die Erfindung betrifft ein Verfahren nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a method according to the preamble of patent claim 1.

Zur lagerichtigen Montage der Klischees auf den Formzylindern war es bisher üblich, den Standbogen als Kontrollbogen für den Stand des Klischees auf einen Montagezylinder zu kleben. Auf Druckbild gezeichnet. Die Paßlinien, also die Umrißlinien des Klischees, wurden sodann über einen Spiegel auf den Formzylinder übertragen. In das über den Spiegel übertragene Paßlinienbild wurde sodann das Klischee von Hand auf den Formzylinder aufgeklebt. Danach erfolgte eine manuelle Einfärbung des Klischees und Ausdruck auf den Standbogen. Nach endgültiger Ausrichtung des Klischees wurde sodann die Klischeewalze herausgenommen und die Klischeewalze für die nächste Farbe in die Montagevorrichtung eingehängt. Nach entsprechender Einspiegelung der Paßlinien wurde sodann auch auf dieser Klischeewalze oder Formzylinder das Klischee befestigt.For the correct mounting of the clichés on the forme cylinders, it was previously customary to glue the support sheet on a mounting cylinder as a control sheet for the status of the cliché. Drawn on printed image. The pass lines, i.e. the outline of the cliché, were then transferred to the forme cylinder using a mirror. The cliché was then glued onto the forme cylinder by hand in the pass line image transferred via the mirror. This was followed by manual inking of the cliché and printing on the signature. After the cliché was finally aligned, the cliché roller was then removed and the cliché roller for the next color was hung in the assembly device. After appropriate mirroring of the pass lines, the cliché was then attached to this cliché roller or forme cylinder.

Die Strichstärken der Paßlinien auf dem Standbogen wurden von Hand ausgeführt und waren daher zwangsläufig unterschiedlich. Diese unvermeidbaren Ungenauigkeiten in den Strichstärken wurden sodann über den Spiegel auf den Formzylinder übertragen, so daß eine genaue kantengerade Montage und Befestigung der Klischees nicht möglich war. Die Ungenauigkeiten wurden umso größer, je größer der Abstand des Spiegels von dem Formzylinder ist. Da entsprechend dem feinen Raster der Klischees eine genaue kantengerade Befestigung aller an dem Mehrfarbendruck beteiligten Klischees auf dem Formzylindern unbedingt notwendig ist, war nach dem bekannten Verfahren zur Befestigung der Klischees ein teilweiser Versatz der Rasterpunkte relativ zueinander unvermeidbar, so daß die gedruckten Farben "verschwommen" erschienen. Da der ungenaue Druck der nach dem bekannten Verfahren auf den Formzylindern befestigten Klischees auf deren schiefem Aufbringen beruhte, konnte das Druckbild auch durch eine Passer- und/oder Registerregelung nicht verbessert werden.The stroke widths of the registration lines on the signature were done by hand and were therefore inevitably different. These inevitable inaccuracies in the line widths were then transferred to the forme cylinder via the mirror, so that an exact, straight-edged mounting and fastening of the clichés was not possible. The inaccuracies became greater the greater the distance of the mirror from the forme cylinder. Since, according to the fine grid of the clichés, it is absolutely necessary to fix all the clichés involved in the multicolor printing on the forme cylinder, a partial offset of the halftone dots relative to one another was unavoidable according to the known method for fixing the clichés, so that the printed colors "blurred" appeared. Since the inaccurate printing of the clichés attached to the forme cylinders according to the known method was based on their crooked application, the printed image could not be improved even by register and / or register control.

Bei einem aus der US-PS 28 85 924 bekannten Verfahren nach dem Oberbegriff des Patentanspruchs 1 sind auf zwei im Abstand voneinander liegende Punkte der Montagevorlage und des zu montierenden Klischees zwei Spiegelsysterne gerichtet, die genau fixierte und einander entsprechende Stellungen zu dem Montagezylinder und den der Reihe nach in die Montagestellung gebrachten Formzylindern aufweisen. Die beiden Bilder werden optisch in einem Okular gemischt. Dadurch kann das zunächst verschieblich auf dem Formzylinder gehaltene Klischee derart ausgerichtet werden, daß die über die Optik ausgegebenen Bilder deckungsgleich sind, worauf das Klischee in dieser Lage auf dem Formzylinder befestigt wird.In a method known from US-PS 28 85 924 according to the preamble of claim 1, two mirror systems are directed to two spaced apart points of the mounting template and the cliché to be mounted, the precisely fixed and corresponding positions to the mounting cylinder and the Have form cylinders placed in the assembled position one after the other. The two images are visually mixed in an eyepiece. As a result, the cliché, which is initially displaceably held on the forme cylinder, can be aligned in such a way that the images output via the optics are congruent, whereupon the cliché is attached to the forme cylinder in this position.

Bei diesem bekannten Verfahren ist nicht nur die Handhabung der beiden Spiegelsysteme unständlich, bei diesem kann auch die Dehnung der Klischees nicht berücksichtigt werden, wenn auf dem Montagezylinder als Druckvorlage ein unverzerrtes Ausgangsbild befestigt worden ist. Beim Flexodruck kommen üblicherweise relativ dicke Klischees (beispielsweise 3 mm) aus flexiblem Material zum Einsatz, die um den Formzylinder herumgelegt werden, so daß die Außenseiten der Klischees in der Umfangsrichtung, die der Druckrichtung entspricht, gedehnt werden. Diese Dehnung ist relativ zu der feinen Rasterung bereits so groß, daß sich in vielen Fällen die Klischees nicht lagerichtig auf den Formzylinder einrichten und befestigen lassen, wenn diese nicht berücksichtigt wird. Bei dem bekannten Verfahren der Ausrichtung der Klischees ist die Montagevorlage ein bereits mit Klischees belegter Zylinder. Eine Ausrichtung der Klischees auf einem Formzylinder ist nach dem bekannten Verfahren jedoch nicht möglich, wenn die auf den Montagezylinder befestigte Montagevorlage das unverzerrte Ausgangsbild ist.In this known method, not only is the handling of the two mirror systems incomprehensible, the stretching of the clichés cannot be taken into account if an undistorted original image has been attached to the assembly cylinder as a template. In flexographic printing, relatively thick clichés (for example 3 mm) made of flexible material are usually used, which are placed around the forme cylinder, so that the outer sides of the clichés are stretched in the circumferential direction, which corresponds to the printing direction. This stretch is already so great in relation to the fine grid that in many cases the clichés cannot be set up and fixed in the correct position on the forme cylinder if this is not taken into account. In the known method of aligning the clichés, the assembly template is a cylinder that is already covered with clichés. Alignment of the clichés on a forme cylinder is not possible according to the known method, however, if the assembly template attached to the assembly cylinder is the undistorted original image.

Aufgabe der Erfindung ist es daher, ein Verfahren nach dem Oberbegriff des Patentanspruchs 1 zu schaffen, mit dem sich die Klisches in einfacher und leicht zu handhabender Weise auf die Formzylinder in gleicher Weise kantengerade auch dann aufbringen lassen, wenn die Klischees relativ zu der Montagevorlage eine Verzerrung durch Dehnung erfahren.The object of the invention is therefore to provide a method according to the preamble of claim 1, with which the clichés can be applied in a simple and easy-to-use manner to the forme cylinder in the same way, even when the clichés relative to the assembly template Experience strain distortion.

Erfindungsgemäß wird diese Aufgabe durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst.According to the invention, this object is achieved by the characterizing features of patent claim 1.

Das erfindungsgemäße Verfahren gestattet es, sämtliche Klischees unter Vermeidung von Parallaxenfehlern und anderer Fehler in einfacher, genauer und gleicher Weise auf den Formzylinder auszurichten und zu befestigen. Dabei wird die Arbeitsweise wesentlich dadurch erleichtert, daß der Montagezylinder nicht in einer bestimmten Weise örtlich zu den Formzylindern ausgerichtet zu werden braucht. Die genau fixierte Anordnung der Fernsehkameras sichert die jeweils kantengerade Montage sämtlicher Klischees auf den Formzylindern entsprechend der Montagevorlage. Die durch die Dehnungen hervorgerufenen Fehler bei der Übertragung von der Montagevorlage auf die Klischees ist dabei dadurch ausgeschlossen, daß die Montagevorlage gegenüber der Druckvorlage entsprechend der Dehnung der Außenseiten der auf die Formzylinder aufgebrachten Klischees in Druckzeichnung verzerrt gezeichnet worden sind.The method according to the invention allows all clichés to be aligned and attached to the forme cylinder in a simple, precise and identical manner while avoiding parallax errors and other errors. The operation is greatly facilitated by the fact that the assembly cylinder does not have to be aligned locally to the forme cylinders in a certain way. The precisely fixed arrangement of the television cameras ensures that all clichés are mounted straight on each edge on the forme cylinders in accordance with the assembly template. The errors caused by the stretching during the transfer from the assembly template to the clichés is thereby excluded in that the assembly template has been drawn in a distorted manner in the printed drawing compared to the print template in accordance with the expansion of the outside of the clichés applied to the forme cylinder.

Aus DE-A-21 45 844 ist ein Verfahren zur Kontrolle der zur Anfertigung von Druckstücken bestimmten Farbauszüge eines Mehrfarbenbildes bekannt, bei dem die Farbauszüge mittels eines Ferusch-Videosystems überprüft werden.DE-A-21 45 844 discloses a method for checking the color separations of a multicolor image intended for the production of printing pieces, in which the color separations are checked by means of a Ferusch video system.

Nach einem zweiten Vorschlag wird die gestellte Aufgabe erfindungsgemäß durch die kennzeichnenden Merkmale des Patentanspruchs 4 gelöst. Nach dieser Lösung wird also die Verzerrung rechnerisch vorgenommen, so daß die Erstellung eines entsprechenden verzerrten Bildes entfallen kann. Entsprechend der jeweiligen Dicke der Klischees und der Dicke des Klebstoffauftrags können in ROM's oder dergleichen gespeicherte Programme austauschbar vorgesehen werden.According to a second proposal, the object is achieved according to the invention by the characterizing features of the patent claim 4 solved. According to this solution, the distortion is carried out arithmetically, so that the creation of a corresponding distorted image can be omitted. Depending on the respective thickness of the clichés and the thickness of the adhesive application, programs stored in ROMs or the like can be provided interchangeably.

Um auch bei der Computerverzerrung identische Einstellungen der Kameras vornehmen zu können, können auf der Druckvorlage. durch eine bestimmte Farbe gekennzeichnete Linien quer zur Druckrichtung angeordnet werden, die unverzerrt übertragen werden.In order to be able to make identical camera settings even with computer distortion, you can use the print template. lines marked by a certain color are arranged transversely to the printing direction and are transmitted undistorted.

Zur Durchführung des erfindungsgemäßen Verfahrens wird also beispielsweise zunächst von dem auf der Verpackung oder dergleichen zu druckenden Bild ein Filmnegativ in der Größe erstellt, die dem späteren gedruckten Bild entspricht. Der durch die Klischeedehnung erzeugte Verzerrungsfaktor in Laufrichtung des Bildes wird rechnerisch ermittelt unter Berücksichtigung der Stärke des Klischees, der Schichtdicke des Klebers, die das Klischee mit dem Formzylinderverbindet, des Durchmessers des Klischeezylinders sowie des Dehnungsfaktors des eingesetzten Klischeematerials. Sodann wird ein neues Negativerrechneten Dehnungsfaktor verzerrt ist. Dieses verzerrte Negativfoto wird auf den Montagezylinder aufgebracht, beispielsweise mit Tesafilm aufgeklebt, und durchleuchtet. Es ist auch denkbar, den Montagezylinder unterhalb des verzerrten Negativfotos mit einer fluoreszierenden Schicht zu versehen. Die beiden auf den Montagezylinder gerichteten Kameras übertragen das verzerrte Bild über einen Mischer auf den zugehörigen Fernsehbildschirm. Sodann wird das vorbereitete Klischee lose durch Vakuumansaugung verschiebbar gehalten. Der Abstand der Kameras zur Oberfläche des Klischees wird entsprechend den auf die Montagevorlage gerichteten Kameras genau eingerichtet.To carry out the method according to the invention, for example, a film negative of the size to be printed on the packaging or the like is first created, which corresponds to the later printed image. The distortion factor in the direction of the image generated by the cliché stretching is determined by calculation taking into account the thickness of the cliché, the layer thickness of the adhesive that connects the cliché to the forme cylinder, the diameter of the cliché cylinder and the elongation factor of the cliché material used. Then a new negative calculated strain factor is distorted. This distorted negative photo is applied to the assembly cylinder, for example stuck on with scotch tape, and illuminated. It is also conceivable to provide the assembly cylinder with a fluorescent layer below the distorted negative photo. The two cameras aimed at the mounting cylinder transmit the distorted image to the associated television screen via a mixer. Then the prepared cliché is held loosely displaceable by vacuum suction. The distance between the cameras and the surface of the cliché is set up exactly according to the cameras aimed at the assembly template.

Nachdem das durch das Vakuum auf dem Formzylinder gehaltene Klischee ausgerichtet ist, kann eine Befestigung durch beidseitig klebende Klebestreifen in der Weise erfolgen, daß die nicht angesangten Bereiche des Klischees angehoben und die Klebestreifen untergelegt werden. In entsprechender Weise können anschließend auch nach Abschalten des Vakuums die zuvor durch das Vakuum angesaugten Bereiche des Klischees auf den Formzylinder aufgeklebt werden.After the cliché held by the vacuum on the forme cylinder is aligned, it can be attached by adhesive strips that are adhesive on both sides in such a way that the areas of the cliché that have not been sung are raised and the adhesive strips are placed under. In a corresponding manner, the areas of the plate previously sucked in by the vacuum can then be glued onto the forme cylinder even after the vacuum has been switched off.

Während nach einem ersten Verfahren auf den Hilfs- oder Montagezylinder eine Montagevorlage aufgebracht wird, die bereits die Verzerrung berücksichtigt, wird nach einem zweiten Verfahren ein unverzerrter Fotofilm auf den Montagazylinder aufgebracht. Dieses lagerichtig auf dem Montagezylinder befestigte Bild wird sodann mittels eines Scanners abgetastet und über einen Computer wird ein verzerrtes Bild auf den Monitor ausgegeben. Mit diesen verzerrten Bild, das dem Klischee entspricht, erfolgt sodann die kantengersde Ausrichtung der Klischees.While a mounting template that already takes the distortion into account is applied to the auxiliary or mounting cylinder according to a first method, an undistorted photo film is applied to the mounting cylinder according to a second method. This image, which is fixed in the correct position on the assembly cylinder, is then scanned by means of a scanner and a distorted image is output on the monitor via a computer. With this distorted image, which corresponds to the cliché, the edge-narrow alignment of the clichés then takes place.

Ein Ausführungsbeispiel der Erfindung wird nachstehend anhand der Zeichnung, in deren einziger Fig. eine Klischee-Aufklebe- und Andruckmaschine mit aufgasetztem Montagezylinder, der Einrichtung dienen den Fernsehkameras und Monitoren perspektivisch dargestellt ist, näher erläutert.An embodiment of the invention is explained below with reference to the drawing, in the single Fig. A cliché sticking and pressing machine with gas-mounted mounting cylinder, the device serving the television cameras and monitors is shown in perspective.

Die Klischee-Aufklebe- und -Andruckmaschine besteht aus einem Gestell 2, in dem die Rasterwalze 3, der Formzylinder 4, der Gegendruckzylinder 5 und weitere Führungs- und Umlenkwalzen gelagert sind. Die oberhalb der Farbwanne 6 angeordnete Rakel 7 ist in üblicher Weise an die Rasterwalze 3 angestellt. Dem Farbumlauf dient ein mit einer Pumpe versehener Vorratsbehälter 8, der in üblicher Weise durch Farbleitungen mit der Farbwanne verbunden ist.The cliché gluing and printing machine consists of a frame 2, in which the anilox roller 3, the forme cylinder 4, the impression cylinder 5 and further guide and deflection rollers are mounted. The doctor blade 7 arranged above the ink fountain 6 is placed against the anilox roller 3 in the usual way. The paint circulation is provided by a reservoir 8 provided with a pump, which is connected to the paint pan in the usual way by paint lines.

Das zu badruckende Papier wird von der Rolle 9 abgewickelt und nach dem gedrucken auf die Rolle 10 aufgewickelt.The paper to be printed is unwound from the roll 9 and wound onto the roll 10 after printing.

Auf den Formzylinder 4 ist das zu montierende Klischee zunächst beweglich befestigt. In einem Aufbau 12 des Gestells 2 ist der Montagezylinder 13 mit der auf diesem befestigten Montagevorlage gelagert.The plate to be assembled is first movably attached to the forme cylinder 4. In a structure 12 of the frame 2, the mounting cylinder 13 is mounted with the mounting template attached to it.

An einem mit dem Gestell 2 befestigten Träger 14 sind vier Fernsehkameras 15, 16, 17, 18 einstellbar gehaltert. Die Fernsehkameras 15, 16 sind auf auf der Montagevorlage im Abstand voneinander befindliche Punkte A und B gerichtet, während die Fernsehkameras 17, 18 suf die entsprechenden Punkte C und D des einzurichtenden Klischees 11 des Formzylinders 4 eingestellt sind. Die von den Fernsehkameras 16, 18 aufgenommenen Bilder werden übereinanderliegend auf dem Monitor 19 wiedergegeben, während die von den Fernsehkameras 15, 17 aufgenommenen Bilder auf dem Monitor 20 dargestellt werden. Das Klischee 11 wird zu seiner Einrichtung auf dem Formzylinder 4 so lange bewegt, bis die Bilder der Punkte A und C bzw. B und D deckungsgleich auf den Monitoren 19 und 20 erscheinen. Sobald die Deckung der Punkte auf den Monitoren 19, 20 festgestellt worden ist, wird das Klischee auf dem Formzylinder 4 für den nachfolgenden Druck endgültig befestigt.Four television cameras 15, 16, 17, 18 are adjustably supported on a support 14 fastened to the frame 2. The television cameras 15, 16 are directed to points A and B located at a distance from one another on the assembly template, while the television cameras 17, 18 are set to the corresponding points C and D of the cliché 11 to be set up of the forme cylinder 4. The images recorded by the television cameras 16, 18 are displayed one above the other on the monitor 19, while the images recorded by the television cameras 15, 17 are displayed on the monitor 20. The cliché 11 is moved for its establishment on the forme cylinder 4 until the images of the points A and C or B and D appear congruently on the monitors 19 and 20. As soon as the coverage of the points on the monitors 19, 20 has been determined, the cliché is finally fixed on the forme cylinder 4 for the subsequent printing.

Zur abschließenden Überprüfung der Druckqualität der ausgerichteten, am Formzylinder befestigten Klischees erfolgt der Andruck auf der Papierbahn 9, 10 für eine vorgegebene Farbe. Zeigt der Andruck das gewünschte Ergebnis, wird der Formzylinder 4 mit dem Klischee 11 demontiert und für die Produktion in das Druckwerk einer bekannten Mehrzylinder-Flexodruckmaschine eingesetzt.For the final check of the print quality of the aligned clichés attached to the forme cylinder, the printing takes place on the paper web 9, 10 for a given color. If the proof shows the desired result, the forme cylinder 4 with the cliché 11 is dismantled and used for the production in the printing unit of a known multi-cylinder flexographic printing machine.

Anschließend wird in die beschriebene Klischee-Aufklebe- und -Andruck-maschine ein nächster Formzylinder für eine andere Farbe eingelegt, dessen Klischee in beschriebener Weise passergarecht ausgerichtet und montiert wird, bevor ebenfalls ein Probeandruck erfolgt und dieser Zylinder ebenfalls in die Produktionsmaschine eingesetzt wird.A next forme cylinder for a different color is then inserted into the cliché gluing and printing machine described, the cliché being aligned and assembled in the manner described, before a test print is also carried out and this cylinder is also used in the production machine.

Je nach der Anzahl der in der Produktionsmaschine gewünschten unterschiedlichen Farben werden in gleicher Weise nacheinander die Klischees für alle weiteren Formzylinder vorbereitet.Depending on the number of different colors required in the production machine, the clichés for all other forme cylinders are prepared one after the other in the same way.

Die Einrichtung und Befestigung der Klischees auf dem Formzylinder kann auch in den Druckwerken erfolgen, in denen die Formzylinder für den nachfolgenden Druck verbleiben.The clichés can also be set up and attached to the forme cylinder in the printing units in which the forme cylinders remain for the subsequent printing.

Claims (5)

1. A method of correctly transferring the positions for the printing blocks on the form cylinders (4) of a flexographic printing machine for multicolor printing from the line-up flat secured to a line-up cylinder (13) or line-up table, characterized in that
before being secured to the line-up cylinder (13) the flat is drawn so as to be distorted in the printing direction (peripheral direction) relative to the copy for printing in consideration of the elongation of the outside of the printing block (11) applied to the form cylinder (4),
two television cameras (15, 16, 17, 18) disposed in mutually corresponding, exactly fixed positions relative to the line-up cylinder (13) and the form cylinders (4), which are consecutively moved to the mounting position, are directed to each pair of spaced apart points (A, B) of the flat and each pair of spaced apart points (C, D) of the printing block (11) to be mounted, and the two images of corresponding points (A, C; B, D) of the copy and of the printing block (11) are simultaneously displayed by means of a mixer on an associated television screen (19, 20),
the printing block (11) is initially displaceably held on the form cylinder (4) and is then lined up so that the images displayed on the television screens (19, 20) are congruent, and the printing block (11) is secured in that position to the form cylinder (4), and
the printing blocks (11) of the other form cylinders (4) used for multicolor printing are successively lined up on and fixed to the respective form cylinders (4) in dependence on the same flat.
2. A method according to claim 1, characterized in that the printing block (11) is held by sucked air as it is lined up on the form cylinder (4).
3. A method according to claim 1 or 2, characterized in that an identical height adjustment of the cameras (15 to 18) is effected in that the cameras (17,18) directed to the form cylinder (4) are adjusted until an image taken by said cameras of a portion of the flat applied to the form cylinder (4) on the level of the printing blocks (11) can be registered on the television screen (19, 20) with the corresponding image portion of the flat.
4. A method in accordance with the prior art part of claim 1, characterized in that two television cameras (15 to 18), which have exactly fixed, mutually corresponding positions relative to the line-up cylinder (13) and the form cylinders (4), which are consecutively moved to the line-up position, are directed to each pair of spaced apart points (A, B) of the flat and two spaced apart points (C, D) of the printing block (11) to be lined up, and the two images of corresponding points (A, C; B, D) of the copy and of the printing block (11) are simultaneously displayed via an associated mixer on an associated television screen (19, 20), the cameras (15, 16) which detect an undistorted flat that corresponds to the copy and is secured to the line-up cylinder (13) are controlled by an electronic computer in consideration of the elongation of the printing block (11) applied to the form cylinder (4) so that a distorted image of the flat is displayed via each of the two mixers on each of the two television screens,
the printing block (11) is initially displaceably held on the form cylinder (4) and is then so lined up that the images displayed on the television screen (19, 29) are congruent, and the printing block (11) is secured to the form cylinder (4) in that position, and
the printing blocks (11) on the other form cylinders (4) used for multicolor printing are consecutively lined up on and secured to said form cylinders (4) in dependence on the same flat.
5. A method according to claim 4, characterized in that an identical height adjustment of the cameras (15 to 18) is effected in that lines which are distinguished, e.g., by a specific colour, are transmitted by the computer without a distorsion relative to the printing direction.
EP83102350A 1982-03-16 1983-03-10 Method of registering and attaching printing plates on the plate cylinder of flexographic multicolour printing machines Expired EP0089015B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3209484 1982-03-16
DE19823209484 DE3209484A1 (en) 1982-03-16 1982-03-16 METHOD FOR FASTENING THE Clichés ON THE FORM CYLINDERS OF FLEXO PRINTING MACHINES FOR MULTI-COLOR PRINTING

Publications (2)

Publication Number Publication Date
EP0089015A1 EP0089015A1 (en) 1983-09-21
EP0089015B1 true EP0089015B1 (en) 1986-10-15

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EP83102350A Expired EP0089015B1 (en) 1982-03-16 1983-03-10 Method of registering and attaching printing plates on the plate cylinder of flexographic multicolour printing machines

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US (1) US4520389A (en)
EP (1) EP0089015B1 (en)
JP (1) JPS58177359A (en)
DE (2) DE3209484A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3827155A1 (en) * 1988-08-10 1990-02-15 Reiner Roosen METHOD AND DEVICE FOR DRILLING HOLES IN A PRESSURE PLATE

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4743324A (en) * 1986-08-20 1988-05-10 W. R. Grace & Co., Cryovac Div. Printing plate mounter
JPS6453897A (en) * 1987-08-26 1989-03-01 Toshiba Corp Postscript type automatic printer
NL8800416A (en) * 1988-02-18 1989-09-18 Anderson & Vreeland Bv POSITIONING DEVICE FOR FLEXIBLE PRESSURE PLATES.
JP2727361B2 (en) * 1989-07-22 1998-03-11 株式会社新川 Plate monitoring method and device in marking device
JP2757036B2 (en) * 1989-08-26 1998-05-25 株式会社新川 Marking method and device
DE8912428U1 (en) * 1989-10-19 1991-02-21 Roosen, Reiner, 6450 Hanau, De
US5132911A (en) * 1989-12-27 1992-07-21 Leader Engineering Fabrication, Inc. Apparatus for mounting and proofing printing plates
US5136948A (en) * 1990-10-31 1992-08-11 Kabushiki Kaisha Shinkawa Marking method and apparatus
US5260780A (en) * 1991-11-15 1993-11-09 Threadmasters, Inc. Visual inspection device and process
US5317971A (en) * 1992-08-26 1994-06-07 Deye Jr Charles E Pin register mounter and method of mounting flexographic plates
US5355797A (en) * 1992-12-28 1994-10-18 Van Dam Machine, B.V. Device for printing objects comprising means for bringing the images of a number of printing plates in register and method applied with the device
US5488781A (en) * 1994-12-13 1996-02-06 Av Flexologic B.V. Positioning apparatus for printing plates
DK0728580T3 (en) * 1995-02-24 1999-11-29 Bieffebi Spa Machine for mounting flexible printing plates on plate holder cylinders in flexographic printing machines and for printing the sample
US5633676A (en) * 1995-08-22 1997-05-27 E. L. Harley Inc. Apparatus and method for mounting printing plates and proofing
US5752445A (en) * 1996-09-26 1998-05-19 All Graphic, S.R.L. Printing mantle for printing indicia on corrugated cardboard substrates
US5850789A (en) * 1997-07-22 1998-12-22 E. I. Du Pont De Nemours And Company Method and apparatus for mounting printing plates
US6117615A (en) * 1999-07-28 2000-09-12 E. I. Du Pont De Nemours And Company Method for mounting multiple printing elements onto a cylindrical element
NL1023431C2 (en) * 2003-05-14 2004-11-16 Av Flexologic Bv Regulated positioning device for flexible printing plates.
EP1742797B1 (en) * 2004-05-04 2012-01-11 SYS Tec. S.R.L. Method and machine for aligning flexographic printing plates on printing cylinders
ITBO20040749A1 (en) 2004-12-02 2005-03-02 Bieffebi Spa MACHINE FOR THE ASSEMBLY OF A FLEXOGRAPHIC CLICHE REGISTER WITH A VIRTUAL INFORMATION SYSTEM
ITBS20050066A1 (en) * 2005-06-01 2006-12-02 Sys Tec S R L METHOD AND MACHINE TO ALIGN FLEXOGRAPHIC PRINTING SHEETS ON PRINTING CYLINDERS
EP2026132B1 (en) 2007-08-16 2013-03-13 E. I. Du Pont de Nemours and Company Process for making a cylindrically-shaped photosensitive element for use as a printing form
EP2154572B1 (en) 2008-08-15 2017-05-03 E. I. du Pont de Nemours and Company Process for making a cylindrically-shaped photosensitive element for use as a printing form
DE102012214824A1 (en) * 2012-08-21 2014-02-27 Ball Europe Gmbh Method and device for aligning printing plates on printing cylinders

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD67445A (en) *
US2417496A (en) * 1944-08-22 1947-03-18 William C Huebner Predetermined register device for printing elements and the like
US2885924A (en) * 1953-11-17 1959-05-12 S-Hertogenbosch Max Cahen Optical apparatus for use in accurately positioning printing plates on a printing cylinder
GB1031931A (en) * 1962-02-16 1966-06-02 Rolf Turo Raivio Register microscope for precision measured mounting work of printing surface or its components
FR1316880A (en) * 1962-03-05 1963-02-01 Linotype Machinery Ltd Apparatus for registering printing elements on printing presses
US3494234A (en) * 1965-08-10 1970-02-10 Sachiko Kojima Apparatus for automatic delivery and cutting of tapes
US3463476A (en) * 1966-04-18 1969-08-26 Chem Products Corp Vacuum chuck
DE1772016A1 (en) * 1968-03-21 1971-01-07 Ibm Deutschland Arrangement for mask adjustment with the light microscope when manufacturing integrated semiconductor circuits, in particular integrated transistors
CH506393A (en) * 1969-12-16 1971-04-30 Bobst Fils Sa J Method for positioning off-machine printing plates intended for a rotary press, and apparatus for carrying out this method
DE2145844A1 (en) * 1971-09-14 1973-03-22 Schmalz Siegfried K DEVICE AND METHOD FOR CHECKING THE COLOR STRUCTURES OF A MULTICOLOR IMAGE INTENDED FOR THE PRODUCTION OF PRINTING BLOCKS
DK446373A (en) * 1973-08-14 1975-04-14 Bates Ventil Sekke Co As
US3988535A (en) * 1975-11-04 1976-10-26 Western Electric Company, Inc. Automated positioning
US4389669A (en) * 1981-02-27 1983-06-21 Ilc Data Device Corporation Opto-video inspection system
US4481533A (en) * 1981-11-27 1984-11-06 Lenkeit Industries, Inc. Method and apparatus for successively positioning sheets of material with precision for punching aligning holes in the sheets enabling the sheets to be used in the manufacture of composite circuit boards
US4449452A (en) * 1982-05-28 1984-05-22 Rapid Packaging Services Pty. Ltd. Rapid plate mounter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3827155A1 (en) * 1988-08-10 1990-02-15 Reiner Roosen METHOD AND DEVICE FOR DRILLING HOLES IN A PRESSURE PLATE

Also Published As

Publication number Publication date
JPS58177359A (en) 1983-10-18
EP0089015A1 (en) 1983-09-21
US4520389A (en) 1985-05-28
DE3366873D1 (en) 1986-11-20
DE3209484A1 (en) 1983-09-29

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