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. 09, 2001
Filed:
Mar. 29, 1999
Tokuju Oikawa, Minami-ashigara, JP;
Fuji Photo Film Co., Ltd., Kanagawa-ken, JP;
Abstract
There is disclosed a silver halide photographic light-sensitive material, which comprises a support having thereon at least one spectrally sensitized light-sensitive silver halide emulsion layer, wherein the silver halide emulsion layer contains at least two kinds of silver halide emulsions, which are different in the concentration of at least one nitrogen-containing heterocyclic compound capable of forming a complex with silver, and wherein the emulsion layer or another hydrophilic colloid layer contains at least one hydrazine derivative, as a nucleating agent, and at least one of amine derivatives, onium salts, disulfide derivatives, or hydroxymethyl derivatives, as a nucleating accelerator. The light-sensitive material is high in sensitivity, extremely high in contrast, and high in blackening density; it makes both saving of a sensitizing dye and low dye stain possible; and the change in sensitivity is small in the production thereof.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile