PROCESS FOR PRODUCING LITHOGRAPHIC PRINTING PLATE AND LITHOGRAPHIC PRINTING PLATE

摘要

A process for producing a lithographic printing plate which comprises a step of subjecting a positive presensitized plate for lithographic printing to image-wise exposure and a step of developing the thus exposed plate with a treatment fluid having a pH of 7 to 12, said positive presensitized plate being provided with both an intermediate layer that contains a polymer comprising repeating units represented by general formula (I-1) and repeating units represented by general formula (I-2) and that has a dry-base coating weight of 2 to 200 mg/m2 and a positive image forming layer on the substrate successively.