| 主权项 |
1. A method for producing a planographic printing plate, comprising:
image-wise exposing a positive type planographic printing plate precursor including an intermediate layer and a positive type image-forming layer successively on a support, the intermediate layer having a coating amount after drying of from 2 mg/m2 to 200 mg/m2 and including a polymer including a repeating unit represented by the following formula (I-1) and a repeating unit represented by the following formula (I-2); and developing the exposed positive type planographic printing plate precursor using a treatment liquid having a pH of from 7 to 12: wherein, in the formula (I-1), R1 represents a hydrogen atom, a methyl group, or an ethyl group; L1 represents a single bond or —COO—(CH2CH2O)n—; and n represents an integer of from 1 to 12, and wherein, in the formula (I-2), R2 represents a hydrogen atom, a methyl group, or an ethyl group; R3 and R4 each independently represent an alkyl group having 1 to 3 carbon atoms; L2 represents a linking group selected from —COO—, —CONH—, or an alkylene group having 1 to 5 carbon atoms, or a linking group formed by connecting two or more of these; and L3 represents an alkylene group or —CH2CHOHCH2—. |
