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:
Nov. 03, 1998
Filed:
Aug. 06, 1996
Tetsuo Yamaguchi, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A silver halide photographic material is provided which comprises a support having thereon at least one light-sensitive silver halide emulsion layer wherein said light-sensitive layer or another hydrophilic colloidal layer provided on the support contains a compound represented by formula (I) and a hydrazine derivative represented by formula (II): ##STR1## wherein R.sup.1 and R.sup.2 may be the same or different and each represents a hydroxyl, hydroxylamino, amino, alkylamino, arylamino, aralkylamino, alkoxy, phenoxy, alkyl, aryl, alkylthio, or phenylthio group, ##STR2## wherein R.sup.3 represents an aliphatic or aromatic group; R.sup.4 represents a hydrogen atom, or an alkyl, aryl, alkoxy, aryloxy, amino or hydrazino group; G.sup.1 represents a --CO--, --SO.sub.2 --, --SO--, --P(O)R.sup.4, --CO--CO--, thiocarbonyl or iminomethylene group; and A.sup.1 and A.sup.2 each represents a hydrogen atom, or one of A.sup.1 and A.sup.2 represents a hydrogen atom and the other represents a substituted or unsubstituted alkylsulfonyl, arylsulfonyl or acyl group. In a preferred embodiment, the silver halide photographic material contains a redox compound which undergoes oxidation to release a development inhibitor.