发明授权
- 专利标题: Photographic element
- 专利标题(中): 摄影元素
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申请号: US09266178申请日: 1999-03-10
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公开(公告)号: US06420103B1公开(公告)日: 2002-07-16
- 发明人: James S. Honan , Thomas A. Rosiek , Brian Thomas , David D. Miller
- 申请人: James S. Honan , Thomas A. Rosiek , Brian Thomas , David D. Miller
- 主分类号: G03C138
- IPC分类号: G03C138
摘要:
Silver halide light sensitive photographic elements are disclosed comprising a support bearing at least one yellow image forming hydrophilic colloid layer comprising a yellow dye-forming coupler and a trialkyl citrate coupler solvent of the formula C3H4(OH)(CO2R)3, where each R independently represents an alkyl group and the total number of carbon atoms for the three R groups combined is greater than 6. The combination of such citrate ester solvents with yellow dye forming couplers in photographic elements leads to both good reactivity and good image-dye light stability. The advantages of the invention are particularly useful for photographic color paper elements on reflective supports.
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