Method for bleach-fixing of photographic elements
US4737450A · kind A · utility
12Cited by
10References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 6, 1987 |
| Grant date | Apr 12, 1988 |
| Priority date | — |
| Expiry date | Feb 6, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/144
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for the processing of photographic elements includes a bleach-fixing step utilizing a bleach-fixing composition comprising an aqueous alkaline solution of a peroxy compound and an ammonium or amine salt of a weak acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.