Photosensitive lithographic printing plate

摘要

A photosensitive lithographic printing plate having a photosensitive layer that comprises an o-naphthoquinone diazide compound and a vinyl polymer insoluble in water but soluble in an alkaline aqueous solution, wherein the vinyl polymer is a copolymer that comprises (A) units of a compound containing at least one phenolic hydroxyl group or at least one sulfonamido group and at least one polymerizable unsaturated bond and (B) units of a compound containing at least one alcoholic hydroxyl group and at least one polymerizable unsaturated bond.