Process for bleaching silver halide photographic elements contai

Details Process for bleaching silver halide photographic elements contai Process for bleaching silver halide photographic elements contai

1976-03-29

1977-07-12

Brammer, Jack P.

Gas separation: apparatus

Electric field separation apparatus

Including gas flow distribution means

96 61R, 96 74, 96 90R, 96114, G03C 532, G03C 176

Patent

active

040351874

ABSTRACT:
Photographic elements are described which comprise a support having thereon at least one image dye-providing layer unit and at least one layer containing an immobile anionic organic acid having an equivalent weight based on acid groups of at least 70 and less than 800. In one embodiment of this invention, photographic elements can be contacted with a transition metal-ion complex such as a cobalt(III) ion complex before contact with a fixing bath and sufficient transition metal ion will be retained in the photographic element to bleach the silver in said element.

REFERENCES:
patent: 3022172 (1962-02-01), Ohba et al.
patent: 3411911 (1968-11-01), Dykstra
patent: 3411912 (1968-11-01), Dykstra
patent: 3676141 (1972-07-01), Hara et al.
patent: 3765891 (1973-10-01), Travis
patent: 3826652 (1974-07-01), Bissonette
patent: 3841873 (1974-10-01), Mowrey et al.

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