Concentrated photographic fixer additive and fixing compositions and method of photographic processing
US6440651B1 · kind B1 · utility
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5Claims
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Key dates
| Filing date | Oct 5, 2000 |
| Grant date | Aug 27, 2002 |
| Priority date | — |
| Expiry date | Oct 5, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/421
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Concentrated aqueous photographic fixing compositions include a photographic fixing agent and a compound represented by Structure I wherein R is carboxy or sulfo, m is an integer of from 0 to 7 and n is an integer of from 2 to 5. This compound is provided in a concentrated aqueous fixer additive composition. These compositions can be used to provide images in color photographic materials, and particularly in color reversal films, with reduced residual sensitizing dye stain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.