Silver halide photographic material
US5376522A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1993 |
| Grant date | Dec 27, 1994 |
| Priority date | — |
| Expiry date | Aug 24, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/34
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A silver halide photographic material having photographic constituent layers on a support, which photographic material is characterized in that at least one of said photographic constituent layers is a silver halide emulsion layer, at least 50% in number of the light-sensitive silver halide grains in said silver halide emulsion layer being grains that contain at least 60 mol % of silver bromide, and at least one of said photographic constituent layers containing at least one of the compounds represented by the following general formula (I): EQU [HlAu.sub.m (L).sub.n (X).sub.p ].sub.q (I) where L is a 1igand in a 5- or 6-membered hetero ring; X is an anionic group; l is an integer of 0-2; m is an integer of 1 or 2; n is an integer of 1-3; p is an integer of 0-3; and q is an integer of 1-4. The silver halide photographic material has high sensitivity and yet it is improved in protection against deterioration in its photographic performance such as increased fog and degraded granularity due to storage after manufacture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.