Patent ID: 7273692
Filing Date: 2007-09-25
Classification: B41C,G03F,Y10S

Abstract:
1. A planographic printing plate material comprising a support and provided thereon, an image formation layer containing a colorant (a) having an absorption band in a wavelength region of from 700 to 1200 nm, a polymerization initiator (b) and a polymerizable ethylenically unsaturated compound (c), wherein the polymerizable ethylenically unsaturated compound (c) has a urethane bond in the molecule and wherein the polymerization initiator (b) is a compound represented by the following formula (1), wherein R 1 represents a hydrogen atom, a bromine atom, or a chlorine atom; R 2 represents a hydrogen atom or a first monovalent organic substituent, provided that R 1 and R 2 may combine with each other to form a ring; and X represents a bromine atom or a chlorine atom.