EP 1524113 A2 20050420 - Method of making a heat-sensitive lithographic printing plate.
Title (en)
Method of making a heat-sensitive lithographic printing plate.
Title (de)
Herstellungsverfahren einer wärmeempfindlichen Flachdruckplatte
Title (fr)
Procédé de fabrication d'une plaque lithographique thermosensible
Publication
Application
Priority
- EP 04104688 A 20040927
- EP 03103828 A 20031016
Abstract (en)
A method of making a lithographic printing plate is disclosed which comprises the steps of (1) providing a lithographic printing plate precursor comprising (i) a support having a hydrophilic surface or which is provided with a hydrophilic layer and (ii) a coating provided thereon which comprises hydrophobic thermoplastic polymer particles; (2) exposing the precursor to IR-light or heat, thereby inducing coalescence of the thermoplastic polymer particles at exposed areas of the coating; (3) applying a hydrophilic protective layer on the coating ; and then, (4) while the precursor is mounted on a print cylinder of a printing press, developing the precursor by supplying an aqueous dampening liquid and/or ink to said precursor while rotating said print cylinder whereby the coating and the hydrophilic protective layer are removed from the support on the non-exposed areas. According to the above method, the hydrophilic protective layer can be applied by coating a solution by means a spray nozzle or a jet nozzle and wherein the applied hydrophilic protective layer improves clean-out in an on-press development.
IPC 1-7
IPC 8 full level
B41C 1/10 (2006.01); B41N 3/03 (2006.01); B41N 3/08 (2006.01)
CPC (source: EP)
B41C 1/1025 (2013.01); B41N 3/036 (2013.01); B41N 3/08 (2013.01); B41C 2201/02 (2013.01); B41C 2210/04 (2013.01); B41C 2210/08 (2013.01); B41C 2210/22 (2013.01); B41C 2210/24 (2013.01)
Citation (applicant)
- EP 1065049 A1 20010103 - AGFA GEVAERT NV [BE]
- EP 0770494 A2 19970502 - AGFA GEVAERT NV [BE]
- US 6387595 B1 20020514 - TENG GARY GANGHUI [US]
- EP 0816070 A1 19980107 - AGFA GEVAERT NV [BE]
- EP 1342568 A1 20030910 - AGFA GEVAERT NV [BE]
- EP 0659909 A1 19950628 - HOECHST AG [DE]
- EP 0537633 A1 19930421 - HOECHST AG [DE]
- EP 0292801 A2 19881130 - HOECHST AG [DE]
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1524113 A2 20050420; EP 1524113 A3 20051123; EP 1524113 B1 20100324
DOCDB simple family (application)
EP 04104688 A 20040927