Diffusion transfer printing plate with acid gelatin under layer

Details Diffusion transfer printing plate with acid gelatin under layer Diffusion transfer printing plate with acid gelatin under layer

1995-04-13

1996-09-03

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Transfer procedure between image and image layer, image...

Diffusion transfer process, element, or identified image...

430227, 430229, G03C 852, G03F 707

Patent

active

055522580

ABSTRACT:
A process is described for producing a lithographic printing plate. The process comprises the steps of imagewise exposing a single sheet lithographic plate material consisting of a flexible support, having thereon a) at least an underlayer containing an acid ossein gelatin, b) a light sensitive silver halide layer, and c) a physical development nucleating surface layer, and, after said exposing, processing said plate material in a diffusion transfer developer or alkaline activator solution to develop imaged portions as hydrophilic areas and retain non-exposed areas as oleophilic areas on said plate.

REFERENCES:
patent: 4510228 (1985-04-01), Tschai et al.
patent: 4605609 (1986-08-01), Okazaki et al.
patent: 4606985 (1986-08-01), Takaya et al.
patent: 4743525 (1988-05-01), Yamamoto et al.
patent: 5399457 (1995-03-01), Davies et al.
Glafkides, Photographic Chemistry, vol. 1., 1958, Fountain Press, London pp. 280, 291, 293.

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