Electrophotographic lithographic printing plate precursor contai

Details Electrophotographic lithographic printing plate precursor contai Electrophotographic lithographic printing plate precursor contai

1989-01-04

1991-02-26

McCamish, Marion C.

Radiation imagery chemistry: process, composition, or product th

Electric or magnetic imagery, e.g., xerography,...

Radiation-sensitive composition or product

430 96, 430 78, 430 49, G03G 5087

Patent

active

049961217

ABSTRACT:
An electrophotographic lithographic printing plate precursor comprising a conductive support having provided thereon at least one photoconductive layer containing photocondutive zinc oxide and a resin binder is disclosed, wherein the resin binder comprises at least one resin (A) containing at least one functional group capable of forming at least one hydroxyl group upon decomposition and at least one member selected from the group consisting of (B) a heat- and/or photo-curable resin and a crosslinking agent. Since the hydroxyl group formed in the resin (A) enhances hydrophilic properties of nonimage areas, the printing plate obtained from the precursor is resistant to background stains. This effect is further ensured by the crosslinked structure formed between the resin (A) and the resin (B) and/or a crosslinking agent.

REFERENCES:
patent: 3776724 (1973-12-01), Usmani
patent: 3912506 (1975-10-01), Merrill
patent: 3932181 (1976-01-01), Ray-Chaudhuri et al.
patent: 4547447 (1985-10-01), Ueda
patent: 4828952 (1989-05-01), Kato et al.

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