Planographic printing plate precursor

Details Planographic printing plate precursor Planographic printing plate precursor

2005-08-22

2008-12-23

Chu, John S (Department: 1795)

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

C430S302000

Reexamination Certificate

active

07468234

ABSTRACT:
The planographic printing plate precursor according to the present invention includes: 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). The planographic printing plate precursor is superior in each of chemical resistance, solubilization discrimination, and image reproducibility.In Formula (1) above, X represents a bivalent connected group; R1represents an alkyl or aryl group; and x is 0 or 1.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; the rings B and C may bind to each other via a binding group; W1represents a carbonyl group, a thiocarbonyl group, or, —C(R25)═N—, wherein R25represents a hydrogen atom or a hydrocarbon group, and Q1represents an oxygen or sulfur atom, or an imino group; R21to R24each independently represents a hydrogen atom or a hydrocarbon group; and m and n are each independently 0 or 1.

REFERENCES:
patent: 6475698 (2002-11-01), Monk et al.
patent: 6921620 (2005-07-01), Hayakawa et al.
patent: 0 897 134 (1999-02-01), None
patent: 2001-133965 (2001-05-01), None
patent: 2002-517786 (2002-06-01), None
patent: WO 99/63407 (1999-12-01), None

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