The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 31, 1995
Filed:
Jun. 02, 1993
Shigeaki Otani, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A silver halide color photographic material is provided comprising at least one yellow-developable silver halide emulsion layer, at least one magenta-developable silver halide emulsion layer and at least one cyan-developable silver halide emulsion layer on a support, characterized in that said at least one cyan-developable silver halide emulsion layer comprises at least one cyan dye-forming coupler represented by the following general formula (Ia) and silver bromochloride or silver chloride emulsion grains substantially free of silver iodide having a silver chloride content of 95 mol % or more spectrally sensitized with at least one sensitizing dye having a reduction potential of -1.27 V (vs. SCE) or lower: ##STR1## wherein Za represents --NH-- or --CH(R.sub.3)--; Zb and Zc each represents --C(R.sub.4).dbd. or --N.dbd.; R.sub.1, R.sub.2 and R.sub.3 each represents an electron withdrawing group having a Hammett's substituent constant .sigma..sub.p value of 0.20 or more, with the proviso that the sum of .sigma..sub.p of R.sub.1 and R.sub.2 is 0.65 or more; R.sub.4 represents a hydrogen atom or substituent, with the proviso that if two R.sub.4 's are present in the general formula, they may be the same or different; X represents a hydrogen atom or a split-off group from the rest of the structure upon coupling reaction with an oxidation product of an aromatic primary amine color developing agent; and R.sub.1, R.sub.2, R.sub.3, R.sub.4 or X may be a divalent group which is connected to a dimer or higher polymer or a high molecular chain to form a homopolymer or copolymer. The silver halide emulsion to be incorporated in said cyan-developable silver halide emulsion layer is gold-sensitized.