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:
Jul. 24, 2001
Filed:
Dec. 22, 1999
Applicant:
Inventors:
Masato Okuyama, Odawara, JP;
Shigeo Tanaka, Odawara, JP;
Assignee:
Konica Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03C 1/005 ; G03C 1/494 ;
U.S. Cl.
CPC ...
G03C 1/005 ; G03C 1/494 ;
Abstract
A method of preparing a silver halide emulsion is disclosed, comprising the steps of forming a silver halide emulsion, subjecting the silver halide emulsion to chemical sensitization, and adding a sensitizing dye the silver halide emulsion, wherein the sensitizing dye exhibits an absorption maximum at a wavelength of not less than 730 nm, the pAg of the emulsion being adjusted to a range of from 7.50 to 8.25 after strating the chemical sensitization and before adding the sensitizing dye.