发明名称 Photographic element containing an azopyrazolone masking coupler exhibiting improved keeping
摘要 The invention provides a photographic element comprising a support bearing a light-sensitive photographic silver halide layer containing (1) a bicyclic azole coupler (2) an azopyrazolone masking coupler and (3) a low impact development inhibitor releasing (LIDIR) coupler having at least one hydrogen atom at the coupling site and which does not substantially reduce contrast in the layer in which it is coated.
申请公布号 US5641613(A) 申请公布日期 1997.06.24
申请号 US19960591122 申请日期 1996.01.25
申请人 EASTMAN KODAK COMPANY 发明人 BOFF, JANE SARAH;SINGER, STEPHEN PAUL
分类号 G03C7/00;G03C7/305;G03C7/32;G03C7/333;G03C7/38;G03C7/384;(IPC1-7):G03C7/305 主分类号 G03C7/00
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