Process for producing positive color diffusion transfer images u

Details Process for producing positive color diffusion transfer images u Process for producing positive color diffusion transfer images u

1975-08-01

1976-12-21

Klein, David

Gas separation: apparatus

Magnetic separating means

And electric field separation apparatus

96 21, 96 22, 96 29D, 96 51, 96 54, 96 55, G03C 700, G03C 554, G03C 716

Patent

active

039986373

ABSTRACT:
Positive color diffusion transfer images are produced by a process that employs light-sensitive photographic elements containing dye-releasing redox agents. The dye-releasing redox agents may be a sulfonamido compound or a hydroquinone derivative which are capable of cleaving to release a diffusible color-providing moiety. A preferred process involves the use of black-and-white developer compositions and comprises

REFERENCES:
patent: 3227550 (1966-01-01), Whitmore et al.
patent: 3443940 (1969-05-01), Bloom et al.
patent: 3443943 (1969-05-01), Rogers et al.
patent: 3628952 (1971-12-01), Poschel et al.
patent: 3698897 (1972-10-01), Gompf et al.
patent: 3725062 (1973-04-01), Anderson et al.
patent: 3734726 (1973-05-01), Figueros et al.
B351,673 Jan. 1975, Fleckensteine et al. 96/3.

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