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:
Dec. 24, 1991
Filed:
Jun. 05, 1991
Yoshio Inagaki, Kanagawa, JP;
Keiichi Adachi, Kanagawa, JP;
Keisuke Shiba, Kanagawa, JP;
Yuji Mihara, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
Silver halide photographic material which has a hydrophilic colloid layer containing a solid micrograin dispersion of compounds represented by the following general formula (I): ##STR1## wherein, T.sup.0, T.sup.1 and T.sup.2 each independently represents a hydrogen atom, a halogen atom or a cyano, nitro, carboxy, alkyl, aryl, alkoxy, aryloxy, alkylthio, arylthio, alkylsulfonyl, arylsulfonyl, sulfamoyl, carbamoyl, amino, sulfonamido, carbonamido, ureido, sulfamoylamino, hydroxyl, alkenyl or acyl group, R.sup.3 and R.sup.4 each independently represents a hydrogen atom, a halogen atom or an alkoxy, alkyl, alkenyl, aryloxy or aryl group, R.sup.5 and R.sup.6 each independently represents a hydrogen atom or a group in which hydrogen atom substitution is possible, and R.sup.7 and R.sup.8 each independently represents an alkyl, aryl, vinyl, acyl or alkyl- or arylsulfonyl group, provided that rings may be formed by linkage of T.sup.1 with T.sup.2, R.sup.3 with R.sup.5, R.sup.4 with R.sup.6, R.sup.7 with R.sup.8, R.sup.5 with R.sup.7 and R.sup.6 with R.sup.8. The compound of formula (I) is designed to dye specific hydrophilic colloid layers in the photographic material and to decolor rapidly during development processing.