Silver halide photographic materials

Details Silver halide photographic materials Silver halide photographic materials

1991-06-26

1994-09-27

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430552, 430553, 430554, 430555, 430556, 430557, 430558, 430957, G03C 732, G03C 736, G03C 738

Patent

active

053506669

ABSTRACT:
A silver halide photographic material having on a support, at least one photosensitive silver halide emulsion layer, which contains a coupler which releases at least two groups selected from the group consisting of a photographically useful group and a precursor thereof via a timing group upon undergoing a coupling reaction with an oxidized product of a developing agent, in which a plurality of photographically useful groups or precursors thereof are present on different atoms of the timing group, provided that when the plurality of photographically useful groups have a different function to each other, the timing group is not a group utilizing an intramolecular nucleophilic substitution reaction.

REFERENCES:
patent: 4409323 (1983-10-01), Sato et al.
patent: 4421845 (1983-12-01), Uemura et al.
patent: 4861701 (1989-08-01), Burns et al.
patent: 4871654 (1989-10-01), Vanmaele et al.
patent: 4994363 (1991-02-01), Koya et al.
patent: 5071735 (1991-12-01), Ichijima et al.
Translation of JP-01-154057 (Jun. 1989).
Patent Abstracts of Japan, vol. 13, No. 422(P-933)(3770), Sep. 20, 1989.
Patent Abstracts of Japan, vol. 14, No. 54 (P-999)(3997), Jan. 31, 1990.

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