Dye diffusion transfer process wherein proteolytic enzyme decomp

Details Dye diffusion transfer process wherein proteolytic enzyme decomp Dye diffusion transfer process wherein proteolytic enzyme decomp

1984-07-03

1985-10-22

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...

430215, 430217, 430236, 430237, 430238, 430463, 430256, G03C 554, G03C 140, G03C 726

Patent

active

045488878

ABSTRACT:
Colored dye diffusion images are produced using a recording material containing, on a layer support (layer element 1), a first dye absorbent layer (layer element 2), a light-sensitive element containing silver halide emulsion layers and color-providing compounds (layer element 3) and optionally a second dye absorbent layer (layer element 4), in that order. An imagewise distribution of diffusible dyes is produced in the light-sensitive element in the course of development and transferred to the first dye absorbent layer.
The light-sensitive element is then decomposed by a treatment which decomposes its layers, e.g. by means of a proteolytic enzyme, but leaves the first dye absorbent layer intact. The second dye absorbent layer optionally present, which has a lower mordanting capacity than the first dye absorbent layer and serves to prevent contamination of the developer bath with diffusible dyes, is also decomposed.

REFERENCES:
patent: 3575703 (1971-04-01), Judd et al.
patent: 3620737 (1971-11-01), Etter et al.
patent: 3721558 (1973-03-01), Abbott et al.
patent: 4150977 (1979-04-01), Phillips
patent: 4379828 (1983-04-01), Liebe et al.
H. M. Barchet, Habilitation Thesis of the Math Nat. Faculty of the University of Leipzig.
Research Disclosure 16,101, McConalogue et al., 9/1977, p. 4.

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