Planographic printing plate precursor

Details Planographic printing plate precursor Planographic printing plate precursor

2007-12-04

2007-12-04

Chu, John S. (Department: 1752)

Radiation imagery chemistry: process, composition, or product th

Diazo reproduction, process, composition, or product

Composition or product which contains radiation sensitive...

C430S157000, C430S175000, C430S176000, C430S302000, C101S465000

Reexamination Certificate

active

11066539

ABSTRACT:
A planographic printing plate precursor comprises a support and two or more positive recording layers which are formed on the support, contain a resin and an infrared absorbing agent and exhibit an increase in solubility in an aqueous alkali solution by exposure to infrared laser light, wherein the positive recording layer closest to the support among these two or more positive recording layers contains at least two types of resins among which at least one type forms a dispersion phase. It is preferable that the dispersion phase be formed of (1) a high-polymer compound incompatible with a high-polymer matrix or (2) a granular polymer selected from a microcapsule and a latex, and contains an infrared absorbing agent and an acid generator.

REFERENCES:
patent: 6140005 (2000-10-01), Van Damme et al.
patent: 6727031 (2004-04-01), Shimada et al.
patent: 0 981 442 (2003-09-01), None
patent: 11-218914 (1999-08-01), None
patent: 2001-281856 (2001-10-01), None
patent: WO01-46318 (2001-06-01), None

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