Photographic elements containing development accelerator release compounds
US5221600A · kind A · utility
1Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1990 |
| Grant date | Jun 22, 1993 |
| Priority date | — |
| Expiry date | Dec 13, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/16
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Certain development inhibitor releasing compounds when incorporated in a photographic element at low levels provide development acceleration. The compounds release silver halide binding groups that are substituted with a group containing an ether oxygen atom and/or an imino nitrogen atom. They are especially useful in high speed color photographic materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.