| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithographic printing plate excellent in plate ware, stain resistance and stain resistance with lapse of time, and to provide a method for manufacturing a lithographic printing plate.SOLUTION: A lithographic printing plate precursor includes a support body, a photosensitive layer formed on the support body, and another layer optionally formed between the support body and the photosensitive layer. The photosensitive layer or another layer in contact with the support body contains a copolymer (A) which contains (a1) a repeating unit having a structure expressed by the formula in a side chain and (a2) a repeating unit having at least one of structures expressed by formulae (a2-1) to (a2-6) in a side chain. In the formula, Lrepresents a single-bonded divalent aromatic group having 6 to 14 carbon atoms, -C(=O)-O- or -C(=O)-NR-; Zrepresents a divalent linking group; Rrepresents a hydrogen atom, alkyl group, aryl group, heterocyclic group, sulfo group, alkyl sulfonyl group or aryl sulfonyl group; and R, Rand Rrepresent hydrogen atoms, halogen atoms or alkyl groups having 1 to 8 carbon atoms. |
