Silver halide photographic light-sensitive material with improve

Details Silver halide photographic light-sensitive material with improve Silver halide photographic light-sensitive material with improve

1988-04-12

1990-09-25

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430558, 430634, 430635, 430636, G03C 138, G03C 738

Patent

active

049593005

ABSTRACT:
A silver halide photographic light-sensitive material which is prevented from softening in gradiation of the toe proportion on the resultant characteristics curve during the storage of the material. The photographic material comprises a support having thereon at least one silver halide emulsion layer, and contains a magenta coupler represented by the following formula M-1 and at least one surface active agent having in the molecule thereof at least two groups selected from the group consisting of a carboxy group and salt thereof, a sulfonic group and a salt thereof and a salt of sulfric ester group. ##STR1## wherein Z represents a group of nonmetal atoms necessary for forming a nitrogen-containing heterocycle which may have a substituent group; X represents a hydrogen atom, or a group capable of being split off upon the reaction with the oxydized product of a color developing agent; and R represents a hydrogen atom or a substituent.

REFERENCES:
patent: 2992108 (1961-07-01), Knox et al.
Patent Abstracts of Japan, vol. 2, No. 84 (E-42( 7/8/78, p. 3693 E 78 JPA 53-49427 (4/5/78).
Research Disclosure No. 160 8/77 pp. 28-30, Abstract #16040, Industrial Opportunities Ltd., Havant, Hampshire, GB.
Chemical Abstracts, vol. 102, (1985), p. 531, Abstract 70 121 p, JPA 59 37815 (9/12/84).

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