Photographic developer/amplifier compositions
US5837431A · kind A · utility
0Cited by
4References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1997 |
| Grant date | Nov 17, 1998 |
| Priority date | — |
| Expiry date | Dec 5, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/144
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Processing of color photographic materials can be accomplished using an aqueous redox amplifier composition comprising a color developing agent, an antioxidant therefor, hydrogen peroxide, and a stabilizing amount of nitrite ions to reduce dye loss during storage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.