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. 18, 1979
Filed:
Jul. 31, 1978
Masatoshi Sugiyama, Minami-ashigara, JP;
Eiichi Kato, Minami-ashigara, JP;
Fuji Photo Film Co., Ltd., Minami-ashigara, JP;
Abstract
A silver halide photographic light-sensitive element which comprises at least one hydrophilic colloid layer containing at least one basic polymer and at least one oxonol dye of the following formula (I): ##STR1## wherein X represents a hydrogen atom, a halogen atom, an alkyl group, an akloxy group, an alkylthio group, an alkoxycarbonyl group or an amino group; Y represents a hydrogen atom, a halogen atom, a sulfo group, a lower alkyl group or a hydroxy group; L represents a methine group; M represents a cation; and n represents a positive integer of from 1 to 3. In this element, the hydrophilic colloid layer can be dyed selectively and the dye can be decolorized readily and completely.