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:
Mar. 17, 1992
Filed:
Jan. 14, 1991
Applicant:
Inventor:
William E Yoerger, Rochester, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430108 ; 4301066 ; 430137 ;
Abstract
In the electrographic developer compositions, the performance of strontium ferrite or barium ferrite carrier particles is improved by treating the carrier particles with an aqueous acid solution. This treatment reduces the tendency toward early life dusting of strontium or barium ferrites and prevents contamination of the toner particles.