PRESENSITIZED PLATE FOR LITHOGRAPHIC PRINTING AND METHOD FOR PROCESSING SAME

摘要

A presensitized plate for lithographic printing which has excellent on-press developability and ensures excellent plate durability and which particularly exhibits excellent on-press developability even after long-term storage, characterized by: having, between a substrate and a polymerizable image-recording layer, an intermediate layer that contains a high-molecular compound comprising (a1) repeating units which each have a group adsorbable to the substrate and (a2) repeating units which each have a polyoxyalkylene group composed of 8 to 120 oxyalkylene repeating units; and containing a compound that bears an oxyalkylene group and has a molecular weight of 1500 or less in the intermediate layer and/or the polymerizable image -recording layer.