Process for preparing positive-acting photosensitive lithographi

Details Process for preparing positive-acting photosensitive lithographi Process for preparing positive-acting photosensitive lithographi

1988-02-08

1989-04-25

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Diazo reproduction, process, composition, or product

Composition or product which contains radiation sensitive...

204 17, 204 33, 204 36, 204 383, 204 42, 204 58, 430165, 430166, 430168, 430276, 430278, G03C 194, G03C 154

Patent

active

048247570

ABSTRACT:
A process for preparing a positive-acting photosensitive lithographic printing plate precursor is described, comprising a combination of the steps of (a) electrolytically graining an aluminum plate in a nitric acid-based electrolyte, (b) etching the grained plate with an alkali, (c) anodizing the etched plate, and (d) forming a photosensitive layer containing an o-quinonediazide on the anodized plate.

REFERENCES:
patent: 3755116 (1973-08-01), Terai et al.
patent: 3834998 (1974-09-01), Watanabe et al.
patent: 4116695 (1978-09-01), Mori et al.
patent: 4301229 (1981-11-01), Sakaki et al.
patent: 4476006 (1984-10-01), Ohba et al.

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