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:
Jun. 01, 1993
Filed:
Sep. 04, 1991
Applicant:
Inventors:
Assignee:
Fuji Xerox Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ; G03C / ;
U.S. Cl.
CPC ...
430110 ; 430109 ; 430138 ; 430137 ;
Abstract
A toner comprising capsule particles composed of a core and an outer shell wherein the capsule particles have at least a substance capable of forming a radical at the surface thereof, and the capsule particles have adhered on the outer shell a copolymer comprising a hydrophilic vinyl monomer unit and a hydrophobic vinyl monomer unit. The toner exhibits stable chargeablity against environmental changes with a narrow charge distribution.