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:
Aug. 08, 2000
Filed:
Nov. 02, 1999
Applicant:
Inventor:
Alain D Sismondi, Nice, FR;
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430569 ; 430567 ; 430607 ; 430613 ;
Abstract
The present invention relates to a process for the manufacturing of a silver halide element comprising a silver halide emulsion-making step, a chemical or optical sensitization step, and a silver halide emulsion coating step, characterized in that the process comprises the step of adding to the silver halide emulsion, after the chemical or optical sensitization step and before the coating step, an aryl compound having at least two substituents each of these represented by an hydroxyl group and/or a sulfonic group in an amount of less than 0.03 moles per mole of silver. The aryl compound increases the speed to Dmin ratio when used in a silver halide element.