PLANOGRAPHIC PRINTING MASTER PLATE AND PRODUCTION METHOD THEREFOR

摘要

To provide an on-press development type lithographic printing plate precursor excellent in ink receptivity and printing durability. A lithographic printing plate precursor which includes a support, an image-recording layer which contains a sensitizing dye, a polymerization initiator and a polymerizable compound and an unexposed area of which is capable of being removed by supplying after exposure, at least any of printing ink and dampening water on a printing machine, and an overcoat layer containing a water-soluble resin in this order, wherein the overcoat layer is substantially not mixed with the image-recording layer.