Patent ID: 6403283
Filing Date: 2002-06-11
Classification: B41C,G03F,Y10S

Abstract:
A planographic printing plate material comprising an aluminum substrate and a negative working image recording layer provided on the substrate and comprised of the following four components (A) to (D):(A) at least one compound represented by general formula (I), (II), (III), (IV) or (V), or at least one polymer obtained by radical polymerization using at least one monomer represented by general formula (VI), (VII), (VIII), (IX) or (X): wherein R1, R2, R4 and R5 each represents a hydrocarbon group which has not more than 20 carbon atoms and which is optionally substituted; R3 represents a halogen atom, or a hydrocarbon group which has not more than 10 carbon atoms and which is optionally substituted, or an alkoxy group which has not more than 10 carbon atoms and which is optionally substituted; Ar1 and Ar2 each represents an aryl group which has not more than 20 carbon atoms and which is optionally substituted; R6 represents a divalent hydrocarbon group which has not more than 20 carbon atoms and which is optionally substituted; and n represents an integer from 0 to 4; wherein R7 represents a hydrogen atom, or a hydrocarbon group which has not more than 20 carbon atoms and which is optionally substituted; R8 represents a single bond, or a divalent hydrocarbon group which has not more than 20 carbon atoms and which is optionally substituted; R9, R11 and R12 each represents a hydrocarbon group which has not more than 20 carbon atoms and which is optionally substituted; Ar3 and Ar4 each represents an aryl group which has not more than 20 carbon atoms and which is optionally substituted; R10 represents a halogen atom, or a hydrocarbon group which has not more than 10 carbon atoms and which is optionally substituted or an alkoxy group which has not more than 10 carbon atoms and which is optionally substituted; R13 represents a divalent hydrocarbon group which has not more than 20 carbon atoms and which is optionally substituted; n represents an integer from 0 to 4; X represents a single bond, â€”COâ€”Oâ€” or â€”COâ€”NR14â€”; R14 represents a hydrogen atom, or a hydrocarbon group which has not more than 20 carbon atoms and which is optionally substituted;(B) at least one cross-linking agent that is a phenol compound having not less than two hydroxymethyl groups or alkoxymethyl groups in the molecule and containing 3 to 5 benzene nuclei, and having a molecular weight of not more than 1,200; (C) at least one infrared absorbing agent; and (D) at least one novolak resin, whose molecular weight is 800 to 200,000 as expressed in weight-average molecular weight and 400 to 60,000 as expressed in number-average molecular weight.