Patent ID: 7462440
Filing Date: 2008-12-09
Classification: B41C,B41M,G03F

Abstract:
1. A lithographic printing plate precursor comprising: a support; and a photopolymerizing layer containing (A) an infrared absorbing agent, (B) a polymerization initiator, (C) a polymerizable compound, and (D) a binder polymer, the photopolymerizing layer being removable by at least one of a printing ink and dampening water, wherein the binder polymer has at least one of an ether group, an ester group, and an amido group in a side chain of a repeating unit constituting the binder polymer, said ether group, ester group and amido group being represented by the following formulae (1) to (3), respectively: wherein R represents a hydrogen atom or a methyl group; “a” represents an integer of 1,3, or 5; “b” represents an integer of from 2 to 5; “c” represents an integer of from 2 to 7; “1” represents an integer of from 2 to 100; and “m” and “n” each independently represents an integer of from 1 to 100.