Photographic material for the silver dye bleach process comprising an AZO dye, capable of laking, in gelatine
US4803151A · kind A · utility
1Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 11, 1987 |
| Grant date | Feb 7, 1989 |
| Priority date | — |
| Expiry date | Feb 11, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/28
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photographic material for the silver dye bleach process comprises, in at least one layer, a colloidal dispersion of azo in gelatine, the ratio of azo dye to gelatine being 1:1 to 1:10.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.