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: US09473644申请日: 1999-12-28
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公开(公告)号: US06190850B1公开(公告)日: 2001-02-20
- 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 5 nm 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 1 to 4 and p is 0 to 2; W2 represents the atoms necessary to complete a carbocyclic or 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; and the sum of the aliphatic carbon atoms in all Z″ substituents combined is at least 6; provided further that when W2 forms a carbocyclic aromatic ring, at least one Z″ is selected from the group consisting of alkoxy, alkylaryl, aryloxy, carbonamido, cyano, halogen, hydroxy, nitro, oxysulfonyl, sulfoxide, thio, and ureido groups. The element exhibits improved cyan dye hue.
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