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. 28, 1993
Filed:
Dec. 06, 1990
Applicant:
Inventor:
David L Cole, Rochester, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430569 ; 430567 ;
Abstract
The invention is generally accomplished by at the end of precipitation of a bromoiodide silver halide emulsion, adding a soluble chloride salt to the precipitation prior to emulsion washing. The chloride salt may be added in an amount between 0.05 and about 5 moles per liter of the precipitation. Further, it is preferred that after adding the chloride, the precipitation be held for at least about 10 minutes after the chloride salt addition prior to the washing to remove salts. Further, it is preferred that the salt removal, holding after chloride addition, and precipitation be carried out at about the same temperature.