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:
Sep. 12, 1989
Filed:
Sep. 30, 1986
Nobuo Furutachi, Kanagawa, JP;
Tadahisa Sato, Kanagawa, JP;
Seiki Sakanoue, Kanagawa, JP;
Akio Mitsui, Kanagawa, JP;
Minoru Sakai, Kanagawa, JP;
Masakazu Morigaki, Kanagawa, JP;
Hidetoshi Kobayashi, Kanagawa, JP;
Nobuo Sakai, Kanagawa, JP;
Kiyoshi Nakazyo, Kanagawa, JP;
Takeshi Hirose, Kanagawa, JP;
Toshio Kawagishi, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer, said silver halide emulsion layer containing a pyrazoloazole series magenta coupler represented by general formula [I] ##STR1## wherein, R.sup.1 and R.sup.2 each represents a hydrogen atom or a substituent; and X represents a hydrogen atom or a releasing group which is released at the reaction with the oxidation product of an aromatic primary amine developing agent; at least one of said R.sup.1 and R.sup.2 is an alkyl group having a secondary or tertiary carbon atom directly bonded to the skeleton, at least one of said R.sub.1 and R.sub.2 is a sulfonamidoalkyl group or a sulfamoylalkyl group; and the magenta coupler may form a dimer or more polymer at the position of said R.sup.1, R.sup.2 or X. By the combined use of high boiling point organic solvent and ultraviolet absorbent, light fastness and coloring property are markedly improved.