Invention Grant
US5958245A Method for regenerating seasoned aqueous fixing or bleach/fixing
solutions
失效
再生调味水性固定或漂白/固定液的方法
- Patent Title: Method for regenerating seasoned aqueous fixing or bleach/fixing solutions
- Patent Title (中): 再生调味水性固定或漂白/固定液的方法
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Application No.: US841226Application Date: 1997-04-29
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Publication No.: US5958245APublication Date: 1999-09-28
- Inventor: Didier J. Martin , Christian G. Guizard , Jean-Francois Diaz
- Applicant: Didier J. Martin , Christian G. Guizard , Jean-Francois Diaz
- Applicant Address: NY Rochester
- Assignee: Eastman Kodak Company
- Current Assignee: Eastman Kodak Company
- Current Assignee Address: NY Rochester
- Priority: FRX9605593 19960429
- Main IPC: B01D61/02
- IPC: B01D61/02 ; C02F1/44 ; G03C5/395 ; G03C7/44 ; G03D13/00 ; B01D61/00
Abstract:
The invention concerns a method and a device for the selective extraction of the halide ions from photographic baths. According to the invention, the solutions to be treated are subjected to a first nanofiltration step 2 in diafiltration mode, then to a second nanofiltration step 3 in concentration mode. The method makes it possible to prolong the activity of the fixing or bleaching/fixing baths during the processing of photographic products.
Public/Granted literature
- US4187637A Toy vehicle Public/Granted day:1980-02-12
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