Heat-sensitive imaging element for providing a lithographic printing plate

摘要

A heat-sensitive lithographic printing plate in which the occurrence of stains in printing can be prevented without increasing the exposure of a laser, comprising a support having provided thereon a hydrophilic layer having a crosslinked structure, and a layer containing a polymer having on a side chain a group in which the solubility in water can be changed by heat, the layer being provided on the hydrophilic layer.