Photographic couplers with N-heterocyclic development inhibiting

Details Photographic couplers with N-heterocyclic development inhibiting Photographic couplers with N-heterocyclic development inhibiting

1975-06-19

1978-04-25

Kimlin, Edward C.

Gas separation: apparatus

Electric field separation apparatus

Collecting electrode details

96 3, 96 29D, 96 562, 96 74, 96 76R, 96 77, 96 95, G03C 140, G03C 700, G03C 554, G03C 148

Patent

active

040860949

ABSTRACT:
A light-sensitive silver halide photographic material comprising a support having thereon at least one hydrophilic colloid layer which contains a color-forming coupler having a nitrogen-containing residue releasable on reaction of the coupler with an oxidation product of a color developing agent and which contains a thiocarbonyl group (S.dbd.C<), a selenocarbonyl group (Se.dbd.C<) or a telluriumcarbonyl group (Te.dbd.C<), the nitrogen atom of the nitrogen-containing residue being attached to the carbon atom in the coupling position of the coupler.

REFERENCES:
patent: 3148062 (1964-09-01), Whitmore et al.
patent: 3227551 (1966-01-01), Barr et al.
patent: 3277554 (1966-01-01), Barr et al.
patent: 3620747 (1971-11-01), Marchant
patent: 3733201 (1973-05-01), Barr
patent: 3770436 (1973-11-01), Fujiwhara et al.
patent: 3900322 (1972-08-01), Oishi et al.
patent: 3930866 (1976-01-01), Oishi et al.
"Yellow Forming Color Couplers" Research Disclosure #13013 2/1975.

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