Gas separation: apparatus – Electric field separation apparatus – And serially arranged nonelectrical separator
Patent
1977-01-24
1979-03-27
Schilling, Richard L.
Gas separation: apparatus
Electric field separation apparatus
And serially arranged nonelectrical separator
96 563, 96 565, 96100N, G03C 700, G03C 140
Patent
active
041463960
ABSTRACT:
A two equivalent yellow, magenta or cyan coupler having various superior properties and suitable for use in color photographic systems and having a releasable group represented by the following general formula: ##STR1## wherein R represents a hydrogen atom, a halogen atom, an alkyl group, an alkenyl group, an aralkyl group, an aralkenyl group, an aryl group or a heterocyclic group; and Y represents the non-metallic atoms necessary to form a 5- to 7-membered ring together with the N atom forming a part thereof, a photographic light-sensitive material containing the two equivalent coupler and a method of forming color photographic images which comprises developing an imagewise exposed silver halide photographic emulsion with an aromatic primary amine developing agent in the presence of the two equivalent coupler.
REFERENCES:
patent: 3227551 (1966-01-01), Barr et al.
patent: 3620747 (1971-11-01), Marchant et al.
patent: 3839044 (1974-10-01), Salminen et al.
patent: 4009038 (1977-02-01), Arai et al.
Aono Toshiaki
Hirose Takeshi
Yokota Yukio
Fuji Photo Film Co. , Ltd.
Schilling Richard L.
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