| 主权项 |
1. A lithographic printing plate precursor comprising a polymerizable image-recording layer on a support, wherein the lithographic printing plate precursor comprises an intermediate layer containing a polymer compound including a repeating unit (a1) having a support-adsorbing group and a repeating unit (a2) having a polyoxyalkylene group having a repeating number of oxyalkylene units of from 8 to 120 between the support and the polymerizable image-recording layer, the precursor contains a compound having a molecular weight of 1,500 or less and having an oxyalkylene group in at least one of the intermediate layer and the polymerizable image-recording layer, and the repeating unit (a1) is a repeating unit having, in a side chain, at least one of the following structures capable of interacting with a surface of the support represented by formulas (a1-1), (a1-2), (a1-3), (a1-4) and (a1-5): wherein in formulae (a1-1), (a1-2), (a1-3), (a1-4) and (a1-5), M11 and M12 each independently represents a hydrogen atom, a metal atom belonging to alkali metal or alkaline earth metal or an ammonium group, R11 to R13 each independently represents a hydrogen atom or an alkyl group, Y1 represents a single bond or a divalent connecting group selected from the group consisting of —CO—, —O—, —HN—, a divalent aliphatic group, a divalent aromatic group and a combination of these groups, and * indicates a site connecting to a main chain of the polymer compound. |
