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. 15, 1987
Filed:
Jan. 10, 1985
Applicant:
Inventors:
Tadao Sugimoto, Kanagawa, JP;
Toshiaki Hayakawa, Kanagawa, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430567 ; 430569 ;
Abstract
A silver halide photographic emulsion and a method for production thereof are described, said emulsion comprising silver halide grains which are comprised of silver iodobromide and have a multilayer structure formed from a core and at least one covering layer and an aspect ratio below 5, said silver halide grains being chemically sensitized and having a halogen composition such that the difference in average iodide content beween adjacent layers, each of which has a substantially homogeneous iodide distribution, is not less than 10 mol %, and the iodide content in the outermost layer is not more than 40 mol %.