发明名称 Combinations of purine-releasing pyrazolone DIR couplers and pyrazolone or pyrazolotriazole imaging couplers
摘要 A photographic element comprises: (a) a support; and (b) at least one silver halide emulsion layer; wherein said emulsion layer contains (c) at least one magenta dye-forming pyrazolone DIR coupler of structure I; and (d) at least one magenta dye-forming imaging coupler of structure II, structure IIIa or structure IIIb, below: wherein the substituents are as defined in the specification.
申请公布号 US5989798(A) 申请公布日期 1999.11.23
申请号 US19970994663 申请日期 1997.12.19
申请人 EASTMAN KODAK COMPANY 发明人 MERKEL, PAUL B.;POSLUSNY, JERROLD N.;STEELE, DAVID A.
分类号 G03C7/24;G03C7/305;G03C7/32;G03C7/38;G03C7/384;(IPC1-7):G03C1/08;G03C7/26 主分类号 G03C7/24
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