Diffusion transfer processing solutions with carboxymethyl hydr

Details Diffusion transfer processing solutions with carboxymethyl hydr Diffusion transfer processing solutions with carboxymethyl hydr

1976-03-10

1977-05-03

Klein, David

Gas separation: apparatus

Electric field separation apparatus

Electrode cleaner, apparatus part flusher, discharger, or...

96 3, 96 66R, 96 76C, 96 77, 106193J, 106197C, 106197R, G03C 700, G03C 554, G03C 148, G03C 140

Patent

active

040212416

ABSTRACT:
The present invention relates to photography and, more particularly, to diffusion transfer process photographic film units which comprise a photosensitive element adapted to provide, by diffusion transfer photographic processing, selective dyde image recordation of incident actinic radiation as a function of the point-to-point degree of photosensitive element exposure, which film unit includes a plurality of essential layers including a photosensitive silver halide layer having associated therewith dye image-forming material which is diffusible during processing as a function of the point-to-point degree of silver halide layer exposure to incident actinic radiation and a layer adapted to receive image-forming material diffusing thereto; means for applying an aqueous composition therebetween, said composition comprising 0.1-10%, by weight, of a viscosity increasing polymer comprising carboxymethyl hydroxyethyl cellulose. Optionally, said composition also includes titanium dioxide in a ratio of 1 to 10 g. of titanium dioxide per 0.1 g. of polymer.

REFERENCES:
patent: 3266894 (1966-08-01), Weyerts et al.
patent: 3415646 (1968-12-01), Land
patent: 3619155 (1971-11-01), Young
patent: 3647437 (1972-03-01), Land
patent: 3832175 (1974-08-01), Kemp

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