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:
Jul. 20, 1993
Filed:
Sep. 03, 1991
Tadashi Ogawa, Kanagawa, JP;
Nobuo Furutachi, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A silver halide color photographic material, which comprises a support and a silver halide emulsion layer, contains a pyrazoloazole type coupler represented by the following general formula (II) in the emulsion layer, to ensure high sensitivity and high gamma without attended by increase in fog: ##STR1## wherein R.sub.1 represents a hydrogen atom or a substituent group; X represents a hydrogen atom or a group releasable upon coupling with the oxidation product of an aromatic primary amine developing agent; or --NH--; Zb and Zc also represent a methine group, a substituted methine group, .dbd.N-- or --NH--, wherein the substituent of at least either of Zb and Zc is a tertiary alkyl group represented by ##STR2## provided that when Zc is the above-described substituted methine group having the tertiary alkyl group as a substituent, R.sub.1 is not such a tertiary alkyl group, and when Zb represents the above-described substituted methine group, either Za or Zc is --NH-- and the remainder is a methine group, a substituted methine group or .dbd.NH--, while when Zc represents the above-described substituted methine group, Za is --NH-- and Zb is a methine group, a substituted methine group or .dbd.N--. R.sub.2 represents an alkyl group or a halogen atom; and R.sub.3 and R.sub.4 each represents substituents as defined in the specification.