EP 1614540 B1 20080917 - Method for making a lithographic printing plate
Title (en)
Method for making a lithographic printing plate
Title (de)
Verfahren zur Herstellung einer lithographischen Druckplatte
Title (fr)
Procédé de production d'une plaque d'impression lithographique
Publication
Application
Priority
- EP 04103248 A 20040708
- EP 05105728 A 20050628
Abstract (en)
[origin: EP1614540A1] A method for making a lithographic printing plate is disclosed which comprises the steps of: (i) providing a negative-working, heat-sensitive lithographic printing plate precursor comprising a support having a hydrophilic surface or which is provided with a hydrophilic layer and a coating provided thereon, the coating comprising an image-recording layer which comprises hydrophobic thermoplastic polymer particles and a hydrophilic binder, wherein the hydrophobic thermoplastic polymer particles have an average particle size in the range from 45 nm to 63 nm, and wherein the amount of the hydrophobic thermoplastic polymer particles in the image-recording layer is at least 70 % by weight relative to the image-recording layer; (ii) exposing the coating to heat or infrared light, thereby inducing coalescence of the thermoplastic polymer particles at exposed areas of the coating; developing the precursor by applying an aqueous alkaline solution, thereby removing non-exposed areas of the coating from the support, wherein the aqueous alkaline solution has a pH ‰¥ 10 and comprises a surfactant.
IPC 8 full level
B41C 1/10 (2006.01)
CPC (source: EP)
B41C 1/1025 (2013.01); B41C 2201/02 (2013.01); B41C 2201/14 (2013.01); B41C 2210/04 (2013.01); B41C 2210/06 (2013.01); B41C 2210/22 (2013.01); B41C 2210/24 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 05105728 A 20050628