Light-sensitive silver halide photographic material prevented in color contamination
US5208140A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 23, 1991 |
| Grant date | May 4, 1993 |
| Priority date | — |
| Expiry date | Sep 23, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/301
- WIPO fieldOptics
- WIPO sectorInstruments
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…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.