ORIGINAL PLATE FOR DIRECT-PATTERN WATERLESS PLANOGRAPHIC PRINTING PLATE

摘要

Disclosed is a directly imageable waterless lithographic printing plate precursor including at least a heat sensitive layer and a silicone rubber layer formed on a substrate in this order, wherein the heat sensitive layer contains at least a novolac resin, a polyurethane and a light-to-heat conversion material, and also has a phase separation structure including at least a phase containing a novolac resin and a phase containing a polyurethane. The present invention provides a directly imageable waterless lithographic printing plate precursor which has high sensitivity and is less likely to cause blister, that is, having wide latitude.