发明授权
- 专利标题: Photographic elements containing scavengers for oxidized developing agent
- 专利标题(中): 含有氧化显影剂清除剂的摄影元素
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申请号: US397029申请日: 1995-03-01
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公开(公告)号: US5543277A公开(公告)日: 1996-08-06
- 发明人: Stephen P. Singer , John W. Harder
- 申请人: Stephen P. Singer , John W. Harder
- 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: G03C1/06
- IPC分类号: G03C1/06 ; G03C7/392 ; G03C1/46
摘要:
An improved photographic element comprises a support bearing at least-one silver halide emulsion layer having associated therewith a hydrazide compound that functions as a scavenger for oxidized developing agent. The hydrazide compound comprises at least one polyhydroxy aromatic nucleus or a precursor thereof and at least one moiety containing an ##STR1## group which is bonded to a ring carbon atom of the polyhydroxy aromatic nucleus or precursor thereof through a linking group. The linking group can be an oxy, thio, sulfinyl, sulfonyl or alkylene group or it can be a carbonyl group when the polyhydroxy aromatic nucleus comprises at least three hydroxyl groups.