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:
Feb. 22, 1994
Filed:
Dec. 23, 1991
Applicant:
Inventors:
Paul C Julien, Webster, NY (US);
Robert J Gruber, Pittsford, NY (US);
John L Haack, Pittsford, NY (US);
Bing R Hsieh, Webster, NY (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430110 ; 430109 ; 430106 ;
Abstract
A process for the preparation of toner compositions with excellent humidity characteristics and comprised of resin particles, and pigment particles which comprises adding thereto metal oxide particles surface treated with a metal salt complex charge enhancing additive.