Acceleration of silver removal by thioether compounds
US5633124A · kind A · utility
9Cited by
29References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1994 |
| Grant date | May 27, 1997 |
| Priority date | — |
| Expiry date | Oct 20, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C7/421
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention provides a process for removal of silver halide from a silver halide photographic recording material by a processing solution with fixing ability (a fixer) containing thiosulfate as a fixing agent conducted in the presence of a thioether compound incorporated within a fixer formulation. It further provides a fixer formulation for use in said process. The fixer contains a maximum ammonium ion concentration of 0.9M.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.