Color photographic material containing a coupler composition comprising a pyrazoldtriazole magenta coupler and a carbonamide compound
US5258278A · kind A · utility
3Cited by
9References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1991 |
| Grant date | Nov 2, 1993 |
| Priority date | — |
| Expiry date | Jul 15, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/301
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Photographic coupler compositions comprise a pyrazolotriazole magenta dye-forming coupler and an performance-improving amount of a carbonamide compound. Improved performance is indicated by increased photographic speed, improved light stability of the resulting magenta dye and/or desired hypsochromic hue shifts in the resulting magenta dye. Color photographic materials and methods employ the coupler compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.