High-speed and well-preservable silver halide photographic light-sensitive material
US5004680A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1989 |
| Grant date | Apr 2, 1991 |
| Priority date | — |
| Expiry date | Jun 1, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C2001/03535
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A silver halide photographic light-sensitive material is disclosed which has a high speed with a low fog and is improved on the long-term preservability. The light-sensitive material comprises a support having thereon a photographic component layer including at least one silver halide emulsion layer, in which the silver halide emulsion layer comprises silver halide grains, each of which are comprised of two or more phases different in the silver iodide content, wherein the average silver iodide content of the grain is higher than the silver iodide content of the external phase of the grain, and to at least one layer included the photographic component layer is added elementary sulfur in a step of manufacturing process of the silver halide photographic light-sensitive material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.