Global Patent Index - EP 0770495 A1

EP 0770495 A1 19970502 - A method for making a lithographic printing plate involving on press development

Title (en)

A method for making a lithographic printing plate involving on press development

Title (de)

Verfahren zur Herstellung einer lithographischen Druckplatte mit auf der Druckpresse stattfindenden Entwicklung

Title (fr)

Procédé pour la fabrication d'une plaque lithographique avec développement sur presse

Publication

EP 0770495 A1 19970502 (EN)

Application

EP 96202554 A 19960912

Priority

  • EP 96202554 A 19960912
  • EP 95202871 A 19951024

Abstract (en)

The present invention provides a method for making a lithographic printing plate comprising the steps of: (1) mounting an imaging element comprising (i) on a hydrophilic surface of a lithographic base an image forming layer comprising hydrophobic thermoplastic polymer particles capable of coalescing under the influence of heat and dispersed in a hydrophilic binder and (ii) a compound capable of converting light to heat, said compound being comprised in said image forming layer or a layer adjacent thereto on a print cylinder of a printing press; (2) image-wise exposing said imaging element by means of a laser or LED; (3) and developing a thus obtained image-wise exposed imaging element by supplying an aqueous dampening liquid and/or ink to said image forming layer while rotating said print cylinder.

IPC 1-7

B41M 5/36; B41C 1/10

IPC 8 full level

B41C 1/10 (2006.01); B41M 5/36 (2006.01)

CPC (source: EP)

B41C 1/1025 (2013.01); B41M 5/366 (2013.01); B41C 2210/04 (2013.01); B41C 2210/08 (2013.01); B41C 2210/24 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0770495 A1 19970502; EP 0770495 B1 20020619

DOCDB simple family (application)

EP 96202554 A 19960912