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:
Jan. 10, 1989
Filed:
Apr. 06, 1987
Keiji Ohbayashi, Hino, JP;
Shigeo Chino, Hino, JP;
Mitsuhiro Okumura, Hino, JP;
Kaoru Onodera, Odawara, JP;
Konishiroku Photo Industry Co., Ltd., Tokyo, JP;
Abstract
A process for forming a dye image is disclosed, in which a silver halide photographic light-sensitive material having a silver halide emulsion layer is developed by a color developer comprising an aromatic primary amine and an N,N- dialkylhydroxylamine. The silver halide emulsion layer contains a hydrophobic dye-forming coupler and a compound selected from the group consisting of compounds having a sterically hindered phenol group and polyalkylpiperidine compounds or the water soluble acid salt thereof. The dye image having a high maximum density and a high light-fastness can be obtained when the color developer without benzyl alcohol is used.