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:
Mar. 19, 1996
Filed:
Sep. 04, 1992
Yuki Mizukawa, Kanagawa, JP;
Hideaki Naruse, Kanagawa, JP;
Toshiyuki Watanabe, Kanagawa, JP;
Tadahisa Sato, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
Disclosed is a silver halide color photographic material having at least one silver halide emulsion layer on a support, in which at least one layer constituting the material contains a coupler of formula (I): ##STR1## where R.sub.1 represents an electron-attracting substituent having a Taft's substituent constant .sigma.* value of +0.52 or more; R.sub.2 represents a branched alkyl group; and X represents a pyrazolyl group. The material has excellent heat stability, sensitivity, gradation and color image fastness, and it also has excellent color forming capacity and absorption characteristics.