Light-sensitive silver halide photographic material prevented in

Details Light-sensitive silver halide photographic material prevented in Light-sensitive silver halide photographic material prevented in

1991-09-23

1993-05-04

Wright, Lee C.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430558, G03C 738, G03C 134

Patent

active

052081400

ABSTRACT:
There is disclosed a light-sensitive silver halide photographic material having at least one light-sensitive emulsion layer and at least one non-light-sensitive emulsion layer of a support, the improvement wherein a coupler represented by the following formula (M-I) and an anti-fading additive having a quenching rate constant of a singlet oxygen of 1.times.10.sup.7 M.sup.-1 .multidot.sec.sup.-1 or more provided that 2,5-dialkylhydroquinones are excluded are contained in at least one layer of the light-sensitive emulsion layer, and a compound represented by the following formula (II) is contained in at least one layer selected from the light-sensitive emulsion layer and the non-light-sensitive emulsion layer. ##STR1## wherein Z represents a group of non-metallic atoms necessary for forming a nitrogen-containing heterocyclic ring, the ring formed by said Z may have a substitutent(s), X represents hydrogen atom or an eliminatable group by the reaction with an oxidized product of a color developing agent, and R represents hydrogen atom or a substituent, ##STR2## wherein R.sup.12 and R.sup.13 each represent secondary or tertiary alkyl group, provided that total carbon atoms of the alkyl groups represented by R.sup.12 and R.sup.13 are 20 or more.

REFERENCES:
patent: 4863840 (1989-09-01), Komorita
patent: 4863842 (1989-09-01), Kaneko et al.
patent: 4868100 (1989-09-01), Nishijima
patent: 4880733 (1989-11-01), Kaneko
patent: 4945031 (1990-07-01), Sakai et al.
patent: 5017465 (1991-05-01), Nishijima

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