EP0096275A2 - Gravure printing plate to be clamped on a clamping cylinder, and process for its production - Google Patents

Gravure printing plate to be clamped on a clamping cylinder, and process for its production Download PDF

Info

Publication number
EP0096275A2
EP0096275A2 EP83105073A EP83105073A EP0096275A2 EP 0096275 A2 EP0096275 A2 EP 0096275A2 EP 83105073 A EP83105073 A EP 83105073A EP 83105073 A EP83105073 A EP 83105073A EP 0096275 A2 EP0096275 A2 EP 0096275A2
Authority
EP
European Patent Office
Prior art keywords
layer
printing
polymeric
printing plate
areas
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.)
Granted
Application number
EP83105073A
Other languages
German (de)
French (fr)
Other versions
EP0096275B1 (en
EP0096275A3 (en
Inventor
Heinz Mohr
Horst Dr. Hoffmann
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Publication of EP0096275A2 publication Critical patent/EP0096275A2/en
Publication of EP0096275A3 publication Critical patent/EP0096275A3/en
Application granted granted Critical
Publication of EP0096275B1 publication Critical patent/EP0096275B1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/18—Curved printing formes or printing cylinders
    • 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
    • B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41F27/1281—Devices for attaching printing elements or formes to supports for attaching flexible printing formes details of the printing plate ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/16—Curved printing plates, especially cylinders
    • B41N1/22—Curved printing plates, especially cylinders made of other substances
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N6/00—Mounting boards; Sleeves Make-ready devices, e.g. underlays, overlays; Attaching by chemical means, e.g. vulcanising

Definitions

  • the present invention relates to an intaglio printing plate with a polymeric printing layer applied to a dimensionally stable, flexible support, which is suitable for clamping onto an intaglio clamping cylinder.
  • the invention further relates to a method for producing such an intaglio printing plate.
  • rotogravure plates are generally clamped onto a cylinder base body using a suitable clamping device.
  • clamping cylinders with a cylinder channel with means for fastening and clamping the pressure plates are known and are also described in the literature (cf. e.g.
  • One problem here is the gap that forms at the abutment points of the pressure plate when it is clamped.
  • the squeegee which is aligned parallel to the cylinder axis, from being pressed into the gap and the squeegee from jumping and thus damaging the squeegee and the printing layer.
  • the present invention was based on the object of producing in a simple manner an intaglio printing plate with a plastic printing layer, which can be easily and easily clamped onto intaglio clamping cylinders without forming an annoying gap.
  • intaglio printing plates can be produced simply if, in the case of an intaglio printing plate, the polymeric printing layer, which is applied firmly to a dimensionally stable, flexible support, is removed from the support in the areas of the intaglio printing plate , removed, which are used to attach the plate to the clamping cylinder and have to be folded over for this.
  • the invention accordingly relates to a process for producing intaglio printing plates with a polymeric printing layer applied to a dimensionally stable, flexible support for mounting on an intaglio printing clamping cylinder, which is characterized in that the polymeric printing layer is removed from the areas of the support to be edged for mounting .
  • the invention further relates to the gravure printing plates produced in this way, suitable for clamping onto a clamping cylinder, in which the support is free of the polymeric printing layer in the areas to be folded over for clamping.
  • the invention furthermore relates to special embodiments of the method and the intaglio printing plates as described below.
  • the rotogravure plates according to the invention can be easily and easily attached to the conventional rotogravure clamping cylinders.
  • the polymeric printing layer in these intaglio printing plates extends only over the actual printing area corresponding to the cylinder circumference.
  • the edges of the polymeric printing layer are firmly and flush butted and pressed so that an almost joint-free surface without an annoying gap, which is formed during printing, is formed.
  • the polymeric printing layer has a layer thickness in the range of about 100 to 500 / um has since then a particularly good gap closure is achieved in the inventive intaglio printing plates.
  • the edging line running across the width of the printing plate can run perpendicular to the long sides of the printing plate and thus, after clamping, parallel to the cylinder axis;
  • these fold lines, up to which the polymeric printing layer is removed from the carrier run somewhat obliquely to the cylinder axis, ie not exactly perpendicular to the long sides of the printing plate.
  • the supports for the rotogravure plates according to the invention which are known and known per se are dimensionally stable and flexible support materials, in particular plate-shaped steel or aluminum sheets, but also, if appropriate, suitable plastic films.
  • the polymeric printing layer, which is applied to the support in an adherent manner, for example by means of a suitable adhesion promoter, can be a simple plastic layer, as is described, for example, in DE-OS 27 52 500, into which the ink-receiving depressions are mechanically engraved.
  • this printing layer is preferably a photopolymeric layer which is obtained by imagewise exposure and development of a photopolymerizable layer of a mixture of a polymeric binder, and thus compatible photopolymerizable, ethylenically unsaturated Monomers and / or oligomers and a photoinitiator has been generated (cf. DE-OS 20 54 833, DE-OS 20 61 287, DE-OS 3 128 949 and DE-OS 31 28 951).
  • the removal of the polymeric printing layer from the areas of the carrier that are to be folded over for fastening on the tensioning cylinder is advantageously carried out before the actual folding and can be done mechanically, for example, by cutting, milling or engraving.
  • the rotogravure plates according to the invention can be produced particularly easily and simply, in particular with the required accuracy and precision, if one starts from a light-sensitive recording material with a photopolymerizable layer of the type mentioned and described above adhered to a dimensionally stable, flexible support.
  • the photosensitive recording materials as described in DE-OS 31 28 949, to which reference is made here for details on the composition of these recording materials and on the production of gravure forms, have proven to be very advantageous.
  • the intaglio printing plates according to the invention are produced by means of these light-sensitive recording materials by, in a manner known per se, the photopolymerizable layer for producing the printing layer by means of a suitable template, for example by means of a screen or line positive or a halftone positive with a guide screen. is exposed imagewise with actinic light and with the formation of the grid and cell structure, the unexposed portions of the layer with the aid of a suitable developer liquid, in which the unexposed portions, but not the exposed portions of the layer are soluble, washed out and removed.
  • the exposure of the photopolymerizable layer is carried out in such a way that the photopolymerizable layer remains unexposed in the areas later to be folded over for clamping the printing plate, so that the photopolymeric layer in these areas when washed out with the developer liquid is removed at the same time as the remaining unexposed portions of this layer.
  • the exposure of the photopolymerizable layer is preferably carried out via a register in this embodiment of the method according to the invention. An intaglio printing plate according to the invention is thus obtained directly, in which the areas of the support to be folded over for clamping onto the tensioning cylinder are free of the polymeric printing layer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)

Abstract

1. A process for the production of a gravure printing plate which can be clamped on a plate cylinder in a gravure printing press and comprises a polymeric printing layer applied onto a dimensionally stable, flexible base, wherein the polymeric printing layer is removed from those areas of the base which are to be canted to enable the plate to be clamped.

Description

Die vorliegende Erfindung betrifft eine Tiefdruckplatte mit einer auf einem dimensionsstabilen, biegsamen Träger haftfest aufgebrachten polymeren Druckschicht, die zum Aufspannen auf einen Tiefdruck-Spannzylinder geeignet ist. Die Erfindung betrifft des weiteren Verfahren zur Herstellung einer solchen Tiefdruckplatte.The present invention relates to an intaglio printing plate with a polymeric printing layer applied to a dimensionally stable, flexible support, which is suitable for clamping onto an intaglio clamping cylinder. The invention further relates to a method for producing such an intaglio printing plate.

Zur Herstellung von Tiefdruckplatten mit Kunststoff-Druckschichten kann man entweder eine Kunststoffschicht auf einen geeigneten Druckschicht-Träger aufbringen und die farbaufnehmenden Vertiefungen (Näpfchen) in der Kunststoffschicht durch mechanische Gravur ausbilden (vgl. z.B. DE-OS 27 52 500) oder man geht von einem lichtempfindlichen Aufzeichnungsmaterial mit einer auf einem dimensionsstabilen Träger aufgebrachten photopolymerisierbaren Schicht aus, die man z.B. durch ein Raster- oder Strich-Positiv oder ein Halbton-Positiv mit Führungsraster-Vorlage bildmäßig mit aktinischem Licht belichtet und wobei man anschließend die nicht belichteten Anteile der Schicht unter Ausbildung der Näpfchen- und Rasterstruktur mit Hilfe einer Entwickler-Flüssigkeit auswäscht (vgl. z.B. DE-OS 20 54 833, DE-OS 20 61 287, JA-PS 41361/72, DE-OS 31 28 949 und DE-OS 31 28 951).For the production of gravure printing plates with plastic printing layers, one can either apply a plastic layer on a suitable printing layer support and form the ink-absorbing depressions (wells) in the plastic layer by mechanical engraving (see, for example, DE-OS 27 52 500) or one starts from one Photosensitive recording material with a photopolymerizable layer applied to a dimensionally stable support, which, for example exposed to actinic light through a screen or line positive or a halftone positive with a guide screen template and then the unexposed portions of the layer are washed out with the aid of a developer liquid to form the well and screen structure (cf. e.g. DE-OS 20 54 833, DE-OS 20 61 287, JA-PS 41361/72, DE-OS 31 28 949 and DE-OS 31 28 951).

Für den Rotations-Tiefdruck werden solche Tiefdruckplatten im allgemeinen mittels einer geeigneten Spannvorrichtung auf einen Zylinder-Grundkörper aufgespannt. Entsprechende Spannzylinder mit einem Zylinderkanal mit Mitteln zum Befestigen und Spannen der Druckplatten sind bekannt und ebenfalls in der Literatur beschrieben (vgl. z.B.For rotogravure printing, such rotogravure plates are generally clamped onto a cylinder base body using a suitable clamping device. Corresponding clamping cylinders with a cylinder channel with means for fastening and clamping the pressure plates are known and are also described in the literature (cf. e.g.

Ein Problem hierbei ist der Spalt, der sich beim Aufspannen an den Stoßstellen der Druckplatte ausbildet. Um beim Druck ein Eindrücken der parallel zur Zylinderachse ausgerichteten Rakel in den Spalt und ein Springen der Rakel und damit eine Beschädigung von Rakel und Druckschicht zu vermeiden, wurde bereits vorgeschlagen, die Druckplatte so auf den Zylinder aufzuspannen, daß der Spalt leicht schräg zur Zylinderachse verläuft. Auch wenn somit das Eindrücken der Rakel in diesen Spalt und ein Springen der Rakel vermieden wird, füllt sich dieser Spalt beim Druck doch mit Farbe, die nicht abgerakelt werden kann, so daß sich der Spalt auf dem Druck abzeichnet.One problem here is the gap that forms at the abutment points of the pressure plate when it is clamped. In order to prevent the squeegee, which is aligned parallel to the cylinder axis, from being pressed into the gap and the squeegee from jumping and thus damaging the squeegee and the printing layer, it has already been proposed to clamp the printing plate onto the cylinder in such a way that the gap runs slightly obliquely to the cylinder axis . Even if the squeegee is not pressed into this gap and the squeegee does not jump, this gap fills up with ink that cannot be scraped off, so that the gap appears on the print.

Auch wenn bereits viele Versuche unternommen worden sind, Druckformen zu schaffen, die keine Stoßstellen aufweisen und dennoch leicht und einfach auf dem Zylinder-Grundkörper zu befestigen sind, ist es bis heute nicht gelungen, durch Aufspannen einer Tiefdruckplatte auf einen Spannzylinder eine spaltfreie Druckform zu erhalten. Vielmehr muß bis jetzt immer noch zur Vermeidung des Abdruckes der Spalt nachträglich, beispielsweise durch einen gesonderten Kunststoffstreifen, verschlossen werden.Even if many attempts have already been made to create printing forms that have no joints and are nevertheless easy and simple to attach to the cylinder base body, it has not yet been possible to obtain a gap-free printing form by clamping a gravure printing plate onto a clamping cylinder . Rather, the gap must still be closed subsequently, for example by a separate plastic strip, in order to avoid the impression.

Der vorliegenden Erfindung lag die Aufgabe zugrunde, in einfacher Weise eine Tiefdruckplatte mit Kunststoff-Druckschicht herzustellen, die sich leicht und problemlos auf Tiefdruck-Spannzylinder ohne Bildung eines störenden Spaltes aufspannen läßt.The present invention was based on the object of producing in a simple manner an intaglio printing plate with a plastic printing layer, which can be easily and easily clamped onto intaglio clamping cylinders without forming an annoying gap.

Es wurde nun überraschend gefunden, daß sich solche Tiefdruckplatten einfach herstellen lassen, wenn man bei einer Tiefdruckplatte die polymere Druckschicht, die haftfest auf einem dimensionsstabilen, biegsamen Träger aufgebracht ist, in den Bereichen der Tiefdruckplatte vom Träger , entfernt, die zum Befestigen der Platte auf dem Spannzylinder dienen und hierzu umgekantet werden müssen.It has now surprisingly been found that such intaglio printing plates can be produced simply if, in the case of an intaglio printing plate, the polymeric printing layer, which is applied firmly to a dimensionally stable, flexible support, is removed from the support in the areas of the intaglio printing plate , removed, which are used to attach the plate to the clamping cylinder and have to be folded over for this.

Gegenstand der Erfindung ist demzufolge ein Verfahren zur Herstellung von Tiefdruckplatten mit einer auf einem dimensionsstabilen, biegsamen Träger aufgebrachten polymeren Druckschicht zum Aufspannen auf einen Tiefdruck--Spannzylinder, welches dadurch gekennzeichnet ist, daß man die polymere Druckschicht auf den zum Aufspannen umzukantenden Bereichen des Trägers entfernt.The invention accordingly relates to a process for producing intaglio printing plates with a polymeric printing layer applied to a dimensionally stable, flexible support for mounting on an intaglio printing clamping cylinder, which is characterized in that the polymeric printing layer is removed from the areas of the support to be edged for mounting .

Gegenstand der Erfindung sind weiterhin die so hergestellten, zum Aufspannen auf einen Spannzylinder geeigneten Tiefdruckplatten, bei welchen der Träger in den zum Aufspannen umzukantenden Bereichen frei von der polymeren Druckschicht ist. Gegenstand der Erfindung sind weiterhin spezielle Ausgestaltungsformen des Verfahrens und der Tiefdruckplatten gemäß der nachfolgenden Beschreibung.The invention further relates to the gravure printing plates produced in this way, suitable for clamping onto a clamping cylinder, in which the support is free of the polymeric printing layer in the areas to be folded over for clamping. The invention furthermore relates to special embodiments of the method and the intaglio printing plates as described below.

Die erfindungsgemäßen Tiefdruckplatten lassen sich leicht und problemlos auf den gebräuchlichen Tiefdruck-Spannzylindern befestigen. Durch das erfindungsgemäße Entfernen der polymeren Druckschicht vom Träger in den Bereichen der Druckplatte, die zur Befestigung der Druckplatte im Spannzylinder umgekantet werden, erstreckt sich bei diesen Tiefdruckplatten die polymere Druckschicht nur über die tatsächliche, dem Zylinderumfang entsprechende eigentliche Druckfläche. Im Gegensatz zu den herkömmlichen Tiefdruckplatten, bei denen sich die polymere Druckschicht über die gesamte Länge der Druckplatte erstreckt und dementsprechend beim Aufspannen auf einen Spannzylinder mit umgekantet und in den Zylinderspalt eingeführt wird, wobei sich an der Stoßstelle stets ein Spalt in der druckenden Oberfläche ausbildet, werden beim Aufspannen der erfindungsgemäßen Druckplatten die Kanten der polymeren Druckschicht fest und bündig gegeneinander gestoßen und gepreßt, so daß eine nahezu stoßstellenfreie Oberfläche ohne störenden Spalt, der sich beim Druck abbildet, entsteht.The rotogravure plates according to the invention can be easily and easily attached to the conventional rotogravure clamping cylinders. As a result of the inventive removal of the polymeric printing layer from the support in the areas of the printing plate which are folded over for fastening the printing plate in the tensioning cylinder, the polymeric printing layer in these intaglio printing plates extends only over the actual printing area corresponding to the cylinder circumference. In contrast to conventional intaglio printing plates, in which the polymeric printing layer extends over the entire length of the printing plate and is accordingly folded over when it is clamped onto a tensioning cylinder and inserted into the cylinder gap, with a gap always forming in the printing surface at the joint, be stretching the he printing plates according to the invention, the edges of the polymeric printing layer are firmly and flush butted and pressed so that an almost joint-free surface without an annoying gap, which is formed during printing, is formed.

Es hat sich dabei als vorteilhaft erwiesen, wenn bei den erfindungsgemäßen Tiefdruckplatten die polymere Druckschicht eine Schichtdicke im Bereich von etwa 100 bis 500/um besitzt, da dann ein besonders guter Spaltverschluß erzielt wird. Bei den erfindungsgemäßen Tiefdruckplatten kann die über die Breite der Druckplatte verlaufende Umkantungslinie zwar senkrecht zu den Längsseiten der Druckplatte und somit nach dem Aufspannen parallel zu der Zylinderachse verlaufen; in einer besonderen Ausgestaltungsform verlaufen diese Umkantungslinien, bis zu denen die polymere Druckschicht vom Träger entfernt wird, jedoch etwas schräg zur Zylinderachse, d.h. nicht genau senkrecht zu den Längsseiten der Druckplatte.It has proved to be advantageous if the polymeric printing layer has a layer thickness in the range of about 100 to 500 / um has since then a particularly good gap closure is achieved in the inventive intaglio printing plates. In the case of the intaglio printing plates according to the invention, the edging line running across the width of the printing plate can run perpendicular to the long sides of the printing plate and thus, after clamping, parallel to the cylinder axis; In a special embodiment, these fold lines, up to which the polymeric printing layer is removed from the carrier, run somewhat obliquely to the cylinder axis, ie not exactly perpendicular to the long sides of the printing plate.

Als Träger für die erfindungsgemäßen Tiefdruckplatten können die an sich üblichen und bekannten dimensionsstabilen und biegsamen Trägermaterialien dienen, insbesondere plattenförmige Stahl- oder Aluminiumbleche, aber gegebenenfalls auch geeignete Kunststoffolien. Die polymere Druckschicht, die haftfest beispielsweise mittels eines geeigneten Haftvermittlers auf dem Träger aufgebracht ist, kann eine einfache Kunststoffschicht sein, wie sie z.B. in der DE-OS 27 52 500 beschrieben ist, in die die farbaufnehmenden Vertiefungen mechanisch eingraviert sind. Bevorzugt ist diese Druckschicht jedoch eine photopolymere Schicht, die durch bildmäßiges Belichten und Entwickeln einer photopolymerisierbaren Schicht einer Mischung von einem polymeren Bindemittel, damit verträglichen photopolymerisierbaren, ethylenisch ungesättigten Monomeren und/oder Oligomeren und einem Photoinitiator erzeugt worden ist (vgl. DE-OS 20 54 833, DE-OS 20 61 287, DE-OS 3 128 949 und DE-OS 31 28 951).The supports for the rotogravure plates according to the invention which are known and known per se are dimensionally stable and flexible support materials, in particular plate-shaped steel or aluminum sheets, but also, if appropriate, suitable plastic films. The polymeric printing layer, which is applied to the support in an adherent manner, for example by means of a suitable adhesion promoter, can be a simple plastic layer, as is described, for example, in DE-OS 27 52 500, into which the ink-receiving depressions are mechanically engraved. However, this printing layer is preferably a photopolymeric layer which is obtained by imagewise exposure and development of a photopolymerizable layer of a mixture of a polymeric binder, and thus compatible photopolymerizable, ethylenically unsaturated Monomers and / or oligomers and a photoinitiator has been generated (cf. DE-OS 20 54 833, DE-OS 20 61 287, DE-OS 3 128 949 and DE-OS 31 28 951).

Das Entfernen der polymeren Druckschicht von den zum Befestigen auf dem Spannzylinder umzukantenden Bereichen des Trägers wird vorteilhaft vor dem eigentlichen Umkanten vorgenommen und kann beispielsweise mechanisch durch Spänen, Fräsen oder Gravieren erfolgen.The removal of the polymeric printing layer from the areas of the carrier that are to be folded over for fastening on the tensioning cylinder is advantageously carried out before the actual folding and can be done mechanically, for example, by cutting, milling or engraving.

Besonders leicht und einfach, insbesondere mit der erforderlichen Genauigkeit und Präzision, können die erfindungsgemäßen Tiefdruckplatten hergestellt werden, wenn man von einem lichtempfindlichen Aufzeichnungsmaterial mit einer auf einem dimensionsstabilen, biegsamen Träger haftfest aufgebrachten photopolymerisierbaren Schicht der oben erwähnten und beschriebenen Art ausgeht. Als sehr vorteilhaft haben sich dabei die lichtempfindlichen Aufzeichnungsmaterialien erwiesen, wie sie in der DE-OS 31 28 949 beschrieben sind, auf die wegen Einzelheiten zur Zusammensetzung dieser Aufzeichnungsmaterialien sowie zur Herstellung von Tiefdruckformen hieraus verwiesen wird.The rotogravure plates according to the invention can be produced particularly easily and simply, in particular with the required accuracy and precision, if one starts from a light-sensitive recording material with a photopolymerizable layer of the type mentioned and described above adhered to a dimensionally stable, flexible support. The photosensitive recording materials as described in DE-OS 31 28 949, to which reference is made here for details on the composition of these recording materials and on the production of gravure forms, have proven to be very advantageous.

Die erfindungsgemäßen Tiefdruckplatten werden mittels dieser lichtempfindlichen Aufzeichnungsmaterialien hergestellt, indem in an sich bekannter Weise die photopolymerisierbare Schicht zur Erzeugung der Druckschicht durch eine geeignete Vorlage, z.B. durch ein Raster- oder Strich--Positiv oder ein Halbton-Positiv mit einer Führungsraster--Vorlage, bildmäßig mit aktinischem Licht belichtet wird und unter Ausbildung der Raster- und Näpfchenstruktur die unbelichteten Anteile der Schicht mit Hilfe einer geeigneten Entwickler-Flüssigkeit, in der die unbelichteten Anteile, nicht aber die belichteten Anteile der Schicht löslich sind, ausgewaschen und entfernt werden. In einer bevorzugten, weil sehr einfachen Ausführungsform dieses Verfahrens wird die Belichtung der photopolymerisierbaren Schicht so durchgeführt, daß die photopolymerisierbare Schicht in den später zum Aufspannen der Druckplatte umzukantenden Bereichen unbelichtet bleibt, so daß die photopolymere Schicht in diesen Bereichen beim Auswaschen mit der Entwickler-Flüssigkeit gleichzeitig mit den übrigen unbelichteten Anteilen dieser Schicht mit entfernt wird. Um die erforderliche Präzision und Paßgenauigkeit zu gewährleisten, wird in dieser Ausführungsform des erfindungsgemäßen Verfahrens die Belichtung der photopolymerisierbaren Schicht vorzugsweise über ein Register vorgenommen. Man erhält so direkt eine erfindungsgemäße Tiefdruckplatte, bei der die zum Aufspannen auf den Spannzylinder umzukantenden Bereiche des Trägers frei von der polymeren Druckschicht sind.The intaglio printing plates according to the invention are produced by means of these light-sensitive recording materials by, in a manner known per se, the photopolymerizable layer for producing the printing layer by means of a suitable template, for example by means of a screen or line positive or a halftone positive with a guide screen. is exposed imagewise with actinic light and with the formation of the grid and cell structure, the unexposed portions of the layer with the aid of a suitable developer liquid, in which the unexposed portions, but not the exposed portions of the layer are soluble, washed out and removed. In a preferred, because very simple embodiment of this method, the exposure of the photopolymerizable layer is carried out in such a way that the photopolymerizable layer remains unexposed in the areas later to be folded over for clamping the printing plate, so that the photopolymeric layer in these areas when washed out with the developer liquid is removed at the same time as the remaining unexposed portions of this layer. In order to ensure the required precision and accuracy of fit, the exposure of the photopolymerizable layer is preferably carried out via a register in this embodiment of the method according to the invention. An intaglio printing plate according to the invention is thus obtained directly, in which the areas of the support to be folded over for clamping onto the tensioning cylinder are free of the polymeric printing layer.

Claims (10)

1. Verfahren zur Herstellung von Tiefdruckplatten mit einer auf einem dimensionsstabilen und biegsamen Träger aufgebrachten polymeren Druckschicht zum Aufspannen auf einen Tiefdruck-Spannzylinder, dadurch gekennzeichnet, daß man die polymere Druckschicht auf den zum Aufspannen umzukantenden Bereichen des Trägers entfernt.1. A process for the production of gravure printing plates with a polymeric printing layer applied to a dimensionally stable and flexible support for mounting on a gravure clamping cylinder, characterized in that the polymeric printing layer is removed from the areas of the support to be edged for mounting. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß man die polymere Druckschicht auf den umzukantenden Bereichen des Trägers vor dem Umkanten entfernt.2. The method according to claim 1, characterized in that one removes the polymeric printing layer on the areas of the support to be edged before the edging. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die über die Breite der Druckplatte verlaufende Umkantungslinie schräg zu den Längsseiten der Druckplatte verläuft.3. The method according to claim 1 or 2, characterized in that the edging line extending across the width of the printing plate extends obliquely to the longitudinal sides of the printing plate. 4. Verfahren nach Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß die polymere Druckschicht etwa 100 bis 500/um dick ist.4. The method according to claims 1 to 3, characterized in that the polymeric printing layer is about 100 to 500 / µm thick. 5. Verfahren nach Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß man von einem lichtempfindlichen Aufzeichnungsmaterial mit einer auf einem dimensionsstabilen, biegsamen Träger aufgebrachten photopolymerisierbaren Schicht ausgeht, wobei man die photopolymerisierbare Schicht zur Erzeugung der Druckschicht durch eine geeignete Positiv-Vorlage bildmäßig mit aktinischem Licht belichtet, anschließend die nicht-belichteten Anteile der Schicht mit Hilfe einer Entwickler-Flüssigkeit, in der die nicht--belichteten Anteile, nicht aber die belichteten Anteile der Schicht löslich sind, auswäscht und die Schicht in den Bereichen, die zum Aufspannen auf den Spannzylinder umgekantet werden müssen, bis auf den Träger entfernt.5. Process according to Claims 1 to 4, characterized in that a light-sensitive material with a photopolymerizable layer applied to a dimensionally stable, flexible support is used, the photopolymerizable layer being used to produce the printing layer by means of a suitable positive template, imagewise with actinic light exposed, then the unexposed portions of the layer with the help a developer liquid, in which the non-exposed portions, but not the exposed portions of the layer, are soluble, and the layer is removed in the areas that have to be folded over for clamping onto the tensioning cylinder, except for the support. 6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß man die photopolymerisierbare Schicht derart belichtet, daß sie in den umzukantenden Bereichen unbelichtet bleibt und diese Bereiche gleichzeitig beim Auswaschen mit der Entwickler-Flüssigkeit mit entfernt werden.6. The method according to claim 5, characterized in that the photopolymerizable layer is exposed in such a way that it remains unexposed in the areas to be edged and these areas are removed at the same time during washing out with the developer liquid. 7. Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß die Belichtung der photopolymerisierbaren Schicht über ein Register vorgenommen wird.7. The method according to claim 6, characterized in that the exposure of the photopolymerizable layer is carried out via a register. 8. Tiefdruckplatte zum Aufspannen auf einen Tiefdruck--Spannzylinder mit einer auf einem dimensionsstabilen, biegsamen Träger aufgebrachten polymeren Druckschicht, dadurch gekennzeichnet, daß in den zum Aufspannen auf den Spannzylinder umzukantenden Bereichen der Träger frei von der polymeren Druckschicht ist.8. Gravure printing plate for mounting on a gravure printing cylinder with a polymeric printing layer applied to a dimensionally stable, flexible carrier, characterized in that in the areas to be folded over for clamping on the cylinder the carrier is free of the polymeric printing layer. 9. Tiefdruckplatte nach Anspruch 8, dadurch gekennzeichnet, daß die polymere Druckschicht eine Schichtdicke im Bereich von etwa 100 bis 500/um besitzt.9. gravure printing plate according to claim 8, characterized in that the polymeric printing layer has a layer thickness in the range of about 100 to 500 / um. 10. Tiefdruckplatte nach Ansprüchen 8 und 9, dadurch gekennzeichnet, daß die über die Breite der Druckplatte verlaufende Umkantungslinie, bis zu der der Träger frei von der polymeren Druckschicht ist, schräg zu den Längsseiten der Druckplatte verläuft.10. Gravure printing plate according to claims 8 and 9, characterized in that the fold line extending over the width of the printing plate, up to which the carrier is free of the polymeric printing layer, extends obliquely to the long sides of the printing plate.
EP83105073A 1982-06-04 1983-05-21 Gravure printing plate to be clamped on a clamping cylinder, and process for its production Expired EP0096275B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823221206 DE3221206A1 (en) 1982-06-04 1982-06-04 LOW PRINT PLATE FOR CLAMPING ON A LOW PRINT CLAMPING CYLINDER AND METHOD FOR THEIR PRODUCTION
DE3221206 1982-06-04

Publications (3)

Publication Number Publication Date
EP0096275A2 true EP0096275A2 (en) 1983-12-21
EP0096275A3 EP0096275A3 (en) 1986-03-12
EP0096275B1 EP0096275B1 (en) 1988-07-27

Family

ID=6165379

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83105073A Expired EP0096275B1 (en) 1982-06-04 1983-05-21 Gravure printing plate to be clamped on a clamping cylinder, and process for its production

Country Status (3)

Country Link
EP (1) EP0096275B1 (en)
JP (1) JPS58224795A (en)
DE (2) DE3221206A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0306986A2 (en) * 1987-09-11 1989-03-15 OFFICINE MECCANICHE GIOVANNI CERUTTI S.p.A. Printing plate for rotary printing

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2285116A (en) * 1938-10-12 1942-06-02 Interchem Corp Printing plate
US3191532A (en) * 1963-12-26 1965-06-29 Miehle Goss Dexter Inc Plate clamping mechanism for rotary printing press
GB1046373A (en) * 1964-05-11 1966-10-26 Paper Converting Machine Co An improved method of preparing printing plates
DE2003325A1 (en) * 1970-01-26 1971-08-19 Leo Heinrichson Method and device for correcting photosensitive plates, films or sheets
US3765329A (en) * 1971-09-28 1973-10-16 A Kirkpatrick Cylinder cover fastening devices
US3973496A (en) * 1973-10-29 1976-08-10 Ball Corporation Apparatus for mounting and locking printing plates

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2285116A (en) * 1938-10-12 1942-06-02 Interchem Corp Printing plate
US3191532A (en) * 1963-12-26 1965-06-29 Miehle Goss Dexter Inc Plate clamping mechanism for rotary printing press
GB1046373A (en) * 1964-05-11 1966-10-26 Paper Converting Machine Co An improved method of preparing printing plates
DE2003325A1 (en) * 1970-01-26 1971-08-19 Leo Heinrichson Method and device for correcting photosensitive plates, films or sheets
US3765329A (en) * 1971-09-28 1973-10-16 A Kirkpatrick Cylinder cover fastening devices
US3973496A (en) * 1973-10-29 1976-08-10 Ball Corporation Apparatus for mounting and locking printing plates

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0306986A2 (en) * 1987-09-11 1989-03-15 OFFICINE MECCANICHE GIOVANNI CERUTTI S.p.A. Printing plate for rotary printing
EP0306986A3 (en) * 1987-09-11 1989-11-15 Officine Meccaniche Giovanni Cerutti S.P.A. Method for joining the ends of a printing plate for rotary printing, and the printing plate so realised

Also Published As

Publication number Publication date
DE3377481D1 (en) 1988-09-01
DE3221206A1 (en) 1983-12-08
EP0096275B1 (en) 1988-07-27
EP0096275A3 (en) 1986-03-12
JPS58224795A (en) 1983-12-27
JPH0249640B2 (en) 1990-10-30

Similar Documents

Publication Publication Date Title
EP0280922B1 (en) Process for the seamless joining of the ends and/or edges of light-sensitive layers, and their use in the production of printing plates
DE3877560T2 (en) METHOD FOR PRODUCING A PRINT INK IMAGE AND IMPRESSIONS THEREOF.
EP1800187B1 (en) Method and device for the production of photopolymerisable cylindrical jointless flexographic printing elements
DE69500578T2 (en) FASTENERS
DE1140080B (en) Plate for the production of relief printing forms by photopolymerization
EP0175189B1 (en) Light-handenable seating mass, especially for filling the split between the ends of printing plates stretched on a forme cylinder
EP0863435B1 (en) Material and process for covering the edges of photopolymerizable printing plates for flexographic printing
DE2542815A1 (en) PRINT FORMS AND METHODS FOR THEIR PRODUCTION
CH646645A5 (en) PRINTING MACHINE.
EP0281770A1 (en) Process for coating printing cylinders or cores with a continuous photosensitive registration layer
DE4243750C5 (en) Process for producing a printing form for gravure printing, screen printing, flexographic printing or offset printing
DE3546024C2 (en)
EP0286020B1 (en) Method of joining the cut-up edges of photopolymerised flexographic formes
DE10318042A1 (en) Process for the production of photopolymerizable, cylindrical, endlessly seamless flexographic printing elements and their use for the production of cylindrical flexographic printing plates
DE3736180A1 (en) METHOD FOR CLOSING AND / OR SEALING OPENINGS, CAVES OR SPACES IN PRINTING PLATES APPLIED ON FORM CYLINDERS
EP0565818A2 (en) Method for photochemically or mechanically producing flexible printing plates
EP0096275B1 (en) Gravure printing plate to be clamped on a clamping cylinder, and process for its production
DE4007248A1 (en) Flexographic printing plates prodn. - by imagewise exposure of photopolymerisable layer from the front followed by overall exposure from the rear
DE3600918C2 (en)
DE2844426B1 (en) Process for the edge connection of light-curable, thermoplastic, elastomer printing plates
DE2050285C3 (en) Process for the production of screen printing stencils made of metal
DE60102790T2 (en) Method for producing a printing plate
DE2323453A1 (en) PRESENSITIZED PLANOGRAPHIC PRINT PLATE
DE3532099A1 (en) PIN REGISTER SYSTEM FOR ANILINE PRINTING PLATES
DE3120964A1 (en) Contact exposure method

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

AK Designated contracting states

Designated state(s): BE CH DE FR GB IT LI NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): BE CH DE FR GB IT LI NL

17P Request for examination filed

Effective date: 19860129

17Q First examination report despatched

Effective date: 19870428

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE FR GB IT LI NL

ITF It: translation for a ep patent filed

Owner name: ING. C. GREGORJ S.P.A.

REF Corresponds to:

Ref document number: 3377481

Country of ref document: DE

Date of ref document: 19880901

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
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

26N No opposition filed
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19920409

Year of fee payment: 10

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

Ref country code: CH

Payment date: 19920410

Year of fee payment: 10

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

Ref country code: GB

Payment date: 19920430

Year of fee payment: 10

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

Ref country code: BE

Payment date: 19920506

Year of fee payment: 10

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

Ref country code: DE

Payment date: 19920514

Year of fee payment: 10

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

Ref country code: NL

Payment date: 19920531

Year of fee payment: 10

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

Ref country code: GB

Effective date: 19930521

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

Ref country code: LI

Effective date: 19930531

Ref country code: CH

Effective date: 19930531

Ref country code: BE

Effective date: 19930531

BERE Be: lapsed

Owner name: BASF A.G.

Effective date: 19930531

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

Ref country code: NL

Effective date: 19931201

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19930521

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

Ref country code: FR

Effective date: 19940131

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: DE

Effective date: 19940201

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST