Patent ID: 6534237
Filing Date: 2003-03-18
Classification: B41C,Y10S

Abstract:
A heat-sensitive lithographic printing plate precursor comprising a support having provided thereon a hydrophilic layer having a cross-linked structure which comprises a metal colloid-containing cross-linked polymer or a condensate of an organic hydrophilic polymer and a silane coupling agent, and a layer containing a polymer having on a side chain a group in which the solubility in water of the polymer can be changed by heat, said layer being provided on the hydrophilic layer wherein said polymer having on a side chain a group in which the solubility in water of the polymer can be changed by heat is a polymer having a secondary alkyl group represented by formula (6): wherein L represents an organic group comprising a multivalent nonmetallic atom connected to a main chain of a polymer; R6 and R7 each represents a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group; and R6 and R7 may form a ring together with a secondary carbon atom with which they are combined.