发明授权
- 专利标题: Photographic element, compound, and process
- 专利标题(中): 摄影元素,复合和过程
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申请号: US09473933申请日: 1999-12-28
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公开(公告)号: US06197492B1公开(公告)日: 2001-03-06
- 发明人: William J. Begley , Frank D. Coms , Gary M. Russo
- 申请人: William J. Begley , Frank D. Coms , Gary M. Russo
- 主分类号: G03C108
- IPC分类号: G03C108
摘要:
Disclosed is a photographic element comprising a light-sensitive silver halide emulsion layer having associated therewith a cyan “NB coupler” having the formula (I): wherein: the term “NB coupler” represents a coupler of formula (I) that forms a dye for which the left bandwidth (LBW) using spin-coating is at least 5nm less than that of the same dye in solution form; Y is H or a coupling-off group; each Z″ and Z* is an independently selected substituent group where n is 0 to 4 and p is 0 to 2; W2 represents the atoms necessary to complete a heterocyclic ring group; and V is a sulfone or sulfoxide containing group; provided that the combined sum of the aliphatic carbon atoms in V, all Z″ and all Z* is at least 8. The element exhibits improved cyan dye hue.