Photographic elements containing magenta dye forming couplers and fade reducing compounds
US5561037A · kind A · utility
17Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1995 |
| Grant date | Oct 1, 1996 |
| Priority date | — |
| Expiry date | Apr 26, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/39296
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Dye fade in photographic images prepared from a silver halide photographic element having a light sensitive silver halide emulsion layer and a pyrazoloazole dye forming coupler is reduced by using a combination of stabilizer compounds of formula S, formula I and optionally formula R. ##STR1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.