Patent ID: 6818378
Filing Date: 2004-11-16
Classification: B41C,Y10S

Abstract:
A lithographic printing plate precursor comprising a support having provided thereon an image-recording layer containing a substance that absorbs light to generate heat, an aqueous alkali solution-soluble resin having phenolic hydroxy group and a polyvinyl acetal resin including an acid group having a pKa of not more than 5, wherein R10 represents an alkyl group which may have a substituent or a hydrogen atom; R11 represents an unsubstituted alkyl group; R12 represents an aliphatic or aromatic hydrocarbon group having a carboxylic acid group; R13 represents an aliphatic or aromatic hydrocarbon group having at least one group selected from a hydroxy group and a cyano group, which may have other substituent; n1, n2, n3, n4 and n5 each represent a mol % of each repeating unit in the following range; n1=5 to 85, n2=0 to 60, n3=0 to 20, n4=3 to 60 and n5=0 to 60.