Method and apparatus for silver recovery during photographic processing
US4343892A · kind A · utility
1Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 1980 |
| Grant date | Aug 10, 1982 |
| Priority date | — |
| Expiry date | May 12, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03D3/065
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The efficiency of silver recovery from photographic processing solutions is improved by the installation of a silver recovery water tank between the fix or blix tank and the wash water tank, which is provided with a mechanism for maintaining the silver concentration of said recovery tank at a substantially constant value, said mechanism comprising a detecting means for measuring the amount of the photographic material treated by the processing line involved and a means to supply water thereto operatable by signal from said detecting means.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.