Patent ID: 8993216
Filing Date: 2015-03-31
Classification: B41C,B41N

Abstract:
1. A method for producing a planographic printing plate, the method comprising, in the following order: subjecting a planographic printing plate precursor to image-wise light exposure, the planographic printing plate precursor comprising: a surface-hydrophilic support; and, on the surface-hydrophilic support, at least two recording layers including an alkali-soluble polymer compound, wherein at least one layer of the at least two recording layers is a positive-working recording layer comprising (A) an infrared absorbing agent and an outermost recording layer of the at least two recording layers comprises (B) a water-insoluble and alkali-soluble polymer compound that includes a repeating unit having a partial structure selected from the group consisting of a fluoroalkyl group and a siloxane structure and includes a repeating unit having an alkali-soluble group; and developing the planographic printing plate precursor after the image-wise light exposure using an alkali developer comprising a compound represented by the following Formula (C-2): wherein, in Formula (C-2), R