Method for processing silver dye bleach materials
US3963492A · kind A · utility
7Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1974 |
| Grant date | Jun 15, 1976 |
| Priority date | — |
| Expiry date | Oct 1, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C5/44
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a simplified method for processing silver dye bleach material by (1) silver developing, (2) dye and silver bleaching (3) silver fixing and (4) soaking. The sequence (1), (2), (3), (4) is followed and the bleaching bath (2) contains (a) a strong acid, (b) a water-soluble iodide, (c) a water-soluble oxidizing agent (d) an antioxidant and (e) a dye bleach catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.