- 专利标题: Transition metal photoreduction systems and processes
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申请号: US63643申请日: 1979-08-02
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公开(公告)号: US4314019A公开(公告)日: 1982-02-02
- 发明人: Anthony Adin , James C. Fleming
- 申请人: Anthony Adin , James C. Fleming
- 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: G03C1/67
- IPC分类号: G03C1/67 ; G03C1/72
摘要:
A radiation-sensitive element is disclosed including a radiation-sensitive layer comprised of a cobalt(III)complex and a photoreductant. A process is disclosed in which the photoreductant is converted to a reducing agent by exposure to electromagnetic radiation longer than 300 nanometers. The reducing agent is then reacted with a cobalt(III)complex. Images can be recorded directly within the radiation-sensitive layer or in a separate image-recording element or layer by use of the residual cobalt(III)complex not exposed or one or more of the reaction products produced by exposure. By using the ammonia liberated from ammine ligand containing cobalt(III)complexes on exposure in combination with imagewise and uniform exposures, positive or negative images can be formed in diazo image-recording layers or elements associated with the radiation-sensitive layer. By the selection of amine-responsive reducing agent precursors, the amines released by the cobalt(III)complexes cause an amplified image.
公开/授权文献
- USD401316S Humidifier 公开/授权日:1998-11-17