Patent ID: 7468234
Filing Date: 2008-12-23
Classification: B41C

Abstract:
1. A planographic printing plate precursor, comprising: a support; and a photosensitive layer provided on the support and containing a polymer having the structural unit represented by the following Formula (1) and an acid coloring colorant represented by the following Formula (2), wherein, in Formula (1) above, X represents a bivalent connected group; R in Formula (2) above, rings A, B, and C each independently represent a mono- to tri-nuclear aromatic hydrocarbon group or a heterocyclic aromatic group; at least one of the rings B and C is substituted with at least one substituent group selected from the group consisting of amino, alkoxy, aryloxy, alkylthio, and arylthio groups; rings B and C may bind to each other via a binding group; W