Dye diffusion transfer process employing compounds that release

Details Dye diffusion transfer process employing compounds that release Dye diffusion transfer process employing compounds that release

1978-06-21

1980-04-15

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...

430559, G03C 140, G03C 554, G03C 110

Patent

active

041982355

ABSTRACT:
Useful non-diffusible dye-giving compounds for the photographic dye diffusion transfer process are dye sulfonamides derived from enolamines or endiamines or tautomers thereof. The dye-giving compounds are oxidized by developer oxidation products and subsequently split under the conditions of alkaline development to release diffusible dyes. The compounds are of the following formula ##STR1## in which X is a dye moiety and R.sub.1, R.sub.2 and R.sub.3 have meanings given hereinafter.

REFERENCES:
patent: 2698795 (1955-01-01), Cressman et al.
patent: 2710803 (1955-06-01), Salminen et al.
patent: 3751406 (1973-08-01), Bloom
patent: 4053312 (1977-10-01), Fleckenstein
patent: 4055428 (1977-10-01), Koyama et al.
"Photographic Elements and Processes," Kestner et al., Research Disclosure No. 15157, 11/1976, pp.68-74.

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