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. 20, 1990
Filed:
Jul. 07, 1988
Applicant:
Inventors:
Masayuki Takeda, Kanagawa, JP;
Masao Mochizuki, Kanagawa, JP;
Koichi Kumashiro, Kanagawa, JP;
Ikutaroh Nagatsuka, Kanagawa, JP;
Masayoshi Shinoki, Kanagawa, JP;
Takayoshi Aoki, Kanagawa, JP;
Assignee:
Fuji Xerox Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
4301066 ; 430108 ; 430111 ;
Abstract
A negative charging carrier for an electrophotographic developer is described, comprising a binder resin having dispersed therein a magnetic powder, wherein said carrier contains a fluorine-containing resin fine powder in an amount of from 5 to 50% by weight based on the total weight of the carrier. The carrier provides a developer for magnetic brush development having a prolonged life and a high rate of development.