Material for color photography

Details Material for color photography Material for color photography

1979-08-28

1981-05-19

Brown, J. Travis

Radiation imagery chemistry: process, composition, or product th

Imaged product

Nonsilver image

430386, 430387, 430554, 430555, 430558, G03C 700

Patent

active

042685923

ABSTRACT:
Light-sensitive recording material for color photography, which contains, in at least one silver halide emulsion layer, at least one magenta coupler of the formula ##STR1## in which A is a 5-membered, heterocyclic, unsaturated ring system which contains 2 or 3 hetero-atoms, at least one of which is a nitrogen atom, and can be fused with a benzene ring and which is substituted by at least one ballast group, R is a substituted or unsubstituted aryl radical, R.sub.1 is hydrogen, halogen, alkyl, alkoxy, halogenoalkyl, alkylsulfonyl or aryloxy and X is a radical detachable during the coupling reaction.
The magenta couplers show high reactivity (high maximum density), which facilitates accelerated processing of the photographic materials, and minimal fogging. The couplers also have good fastness to light.

REFERENCES:
patent: 2619419 (1952-11-01), Jennen
patent: 3615506 (1971-10-01), Abbott et al.
patent: 3684514 (1972-08-01), Iwama et al.
patent: 3930866 (1976-01-01), Oishi et al.
patent: 4070191 (1978-01-01), Imamura et al.

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