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. 12, 1990
Filed:
Aug. 04, 1988
Applicant:
Inventors:
Assignee:
Fuji Xerox Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430109 ; 430111 ;
Abstract
An electrophotographic developer is described, comprising toner particles and carrier particles, characterized in that the toner particles have a layer of externally additive agents comprising fine metal oxide particles having an electric resistance of 1.times.10.sup.2 to 1.times.10.sup.9 .OMEGA..multidot.cm and fine silica particles and cleaning aid particles, and the layer of externally additive agents does not have a chain like structure.