发明授权
- 专利标题： Photographic developing compositions and use thereof in the processing of photographic elements
- 专利标题（中）： 摄影显影组合物及其在照相元件加工中的应用
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申请号： US278736申请日： 1994-07-22
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公开(公告)号： US5503966A公开(公告)日： 1996-04-02
- 发明人: Sylvia Adae-Amoakoh , Bruce M. Resnick
- 申请人： Sylvia Adae-Amoakoh , Bruce M. Resnick
- 申请人地址： NY Purchase
- 专利权人： International Paper Company
- 当前专利权人： International Paper Company
- 当前专利权人地址： NY Purchase
- 主分类号： G03C5/26
- IPC分类号： G03C5/26 ; G03C5/30 ; G03C5/305 ; G03C5/38
摘要：
Photographic developing compositions are provided that are free of dihydroxybenzene developing agents and are used in the processing of photographic elements. The developing compositions have a pH in the range of from 10.1 to 10.9 and comprise at least 0.17 moles per liter of an ascorbic acid developing agent, 0.3 to 0.5 moles per liter of a sulfite and 0.2 to 0.4 moles per liter of a carbonate buffer. Also provided is an ecologically advantageous method for processing photographic elements which utilizes the non-toxic developing compositions.
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