Photographic material and process comprising wash-out naphtholic coupler
US5151343A · kind A · utility
22Cited by
11References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 22, 1991 |
| Grant date | Sep 29, 1992 |
| Priority date | — |
| Expiry date | Aug 22, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/30523
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photographic naphtholic coupler comprising a ballast free naphtholic coupler moiety containing a --CONH.sub.2 group in the 2- position and a ballasted coupling-off group in the 4- position enables good wash out of dye formed upon oxidative coupling from a photographic material during processing of such a photographic material. Such a naphtholic coupler is useful in photographic silver halide materials and processes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.