Photographic elements containing a de-aggregating compound and dye-forming coupler
US6841344B2 · kind B2 · utility
4Cited by
8References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2002 |
| Grant date | Jan 11, 2005 |
| Priority date | — |
| Expiry date | Mar 16, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/132
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to a photographic element comprising at least one light-sensitive silver halide emulsion layer having associated therewith in the same dispersion a certain de-aggregating hydrogen bond donating and hydrogen bond accepting compound and at least one pyrazole fused ring derivative coupler. The combination provides improved colour reproduction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.