Presensitized plate comprising two photosensitive layers wherein

Details Presensitized plate comprising two photosensitive layers wherein Presensitized plate comprising two photosensitive layers wherein

1991-06-13

1998-05-05

Chu, John S.

Radiation imagery chemistry: process, composition, or product th

Diazo reproduction, process, composition, or product

Composition or product which contains radiation sensitive...

430166, 430191, 430192, 430193, 4302731, 4302781, 430302, G03F 7095, G03F 7023

Patent

active

057472165

ABSTRACT:
A presensitized plate which comprises a roughened and anodized aluminum plate having provided thereon a positive working light-sensitive composition layer which comprises a dye and can be made soluble in a developer upon exposure to light, wherein the dye concentration in the portion of the light-sensitive layer adjacent to or near the substrate is lower than that in the other portions of the light-sensitive layer.
The presensitized plate according to the present invention has less color staining than PS plates of the prior art do and thus has excellent examining properties for plate-quality. The presensitized plate also has remarkable advantages of less stains around image-deleted areas during printing and high printing durability.

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