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. 18, 2005
Filed:
Mar. 13, 2003
Seiji Yamashita, Kanagawa, JP;
Masatoshi Nakanishi, Kanagawa, JP;
Seiji Yamashita, Kanagawa, JP;
Masatoshi Nakanishi, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
The invention provides a silver halide emulsion, comprising: silver halide grains containing silver chloride as a primary component and further containing silver bromide; wherein, when an average value of a silver bromide content of the silver halide grains is represented by Y (mol %), a silver bromide content of at least 68% of the silver halide grains is from 0.82×Y (mol %) to 1.18×Y (mol %). Further, the invention provides a method of producing the silver halide emulsion, comprising the step of reacting at least a silver ion, a chlorine ion and a bromine ion; wherein a growth speed at a time of forming a silver bromine-containing phase in the reaction process is at least 60% of a critical growth speed.