Photographic elements containing a bleach accelerator precursor
US4923784A · kind A · utility
4Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1988 |
| Grant date | May 8, 1990 |
| Priority date | — |
| Expiry date | Nov 14, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/421
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Silver halide photographic elements are described containing, as a bleach accelerator precursor, a silver salt of an acid-containing, non-zwitterionic, organic thiol. The bleach accelerators are operable with a multiplicity of bleach compositions and help in reducing sensitizing dye stain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.