发明名称 Color photographic element
摘要 The invention provides a multilayer silver halide color photographic element comprising a support having coated thereon at least two red-sensitive silver halide emulsion layers having different sensitivity to red light, characterized in that the most sensitive of said red-sensitive silver halide emulsion layers comprises a core-shell silver bromoiodide tabular emulsion having a pure bromide core, a total silver iodide content lower than 10% and an aspect ratio higher than 4.0 and a Speed Enhancing (SE) cyan coupler represented by one of the following general formulas:wherein A represents (TIME)n-S-R1-R2, TIME being a timing group releasing S-R1-R2 with delay under developing conditions; n represents 0 or 1; R1 is a divalent linking group and R2 represents a water-solubilizing group or -NR3-R4, wherein R3 and R4, which may be the same or different, each represents a hydrogen atom or an aliphatic group having from 1 to 3 carbon atoms; R5 and R9 represent a non-diffusible ballasting group, R6 represents a group capable of substituting a hydrogen atom of the naphthol ring, m represents 0 to 3, R7 represents hydrogen or a halogen atom, R8 represents an alkyl group, and R10 represents an aryl group.The invention provides enhanced sensitometric properties, such as reduced formation of fog, increased speed and increased sensitivity.
申请公布号 US6511796(B2) 申请公布日期 2003.01.28
申请号 US20010861920 申请日期 2001.05.21
申请人 FERRANIA S.P.A. 发明人 ROCCA GIUSEPPE;POGGI ANTONIO;FAVA SIMONA
分类号 G03C1/005;G03C7/305;(IPC1-7):G03C1/46 主分类号 G03C1/005
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