发明授权
- 专利标题： Process for cleaning a photographic process device
- 专利标题（中）： 清洗摄影处理装置的方法
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申请号： US795353申请日： 1991-11-20
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公开(公告)号： US5198141A公开(公告)日： 1993-03-30
- 发明人: Charles M. Darmon , William G. Henry , Paul A. Schwartz
- 申请人： Charles M. Darmon , William G. Henry , Paul A. Schwartz
- 申请人地址： NY Rochester
- 专利权人： Eastman Kodak Company
- 当前专利权人： Eastman Kodak Company
- 当前专利权人地址： NY Rochester
- 主分类号： C11D7/08
- IPC分类号： C11D7/08 ; C11D7/10 ; C11D7/26 ; C23F1/44 ; G03C11/00
摘要：
Photographic processing devices such as stainless steel racks and tanks are cleaned to remove contaminants such as silver by contacting the devices with a cleaning solution comprising water, a mineral acid such as nitric acid, a soluble cerium (IV) salt such as ceric ammonium nitrate, and acetic acid. The cleaning solutions have a pH no greater than 1. The acetic acid inhibits the formation of a brown stain on in the stainless steel.
公开/授权文献
- US5831513A Magnetic field sensing device 公开/授权日：1998-11-03
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