Treatment of image-forming laminated plate

Details Treatment of image-forming laminated plate Treatment of image-forming laminated plate

1983-07-18

1985-01-29

Louie, Won H.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making printing plates

430166, 430309, G03C 702

Patent

active

044966474

ABSTRACT:
An image-forming laminated plate, particularly a dry planographic printing unprocessed plate, comprising a base substrate, a photosensitive layer containing a substance with quinonediazide structure and a silicone rubber layer in laminating order is treated with a base after imagewise exposure. In addition, the image-forming laminated plate may be subjected to a whole surface slight exposure to the extent that 5 to 60 molar % of the quinonediazide structure in the photosensitive layer to be exposed is photo-decomposed into carboxylic acid structure before or after the usual imagewise exposure for obtaining a negative working plate, or the image-forming laminated plate may be subjected to a imagewise slight exposure to the same extent without the usual imagewise exposure for obtaining a positive working plate. The base-treatment alone or in combination with the slight exposure enhances both the adhesion of the photosensitive layer to the silicone rubber layer and the solvent resistance of the photosensitive layer in non-image areas.

REFERENCES:
patent: 3511178 (1970-05-01), Curtin
patent: 3677178 (1972-07-01), Gipe
patent: 3894873 (1975-07-01), Kobayashi et al.
patent: 4197128 (1980-04-01), Watanabe et al.
patent: 4342820 (1982-08-01), Kinashi et al.

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