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. 06, 1990
Filed:
Oct. 19, 1987
Applicant:
Inventors:
Hidekiyo Tachibana, Kanagawa, JP;
Akihiko Noda, Kanagawa, JP;
Kazuo Terao, Kanagawa, JP;
Toshio Honjou, Chiba, JP;
Yukio Seki, Chiba, JP;
Hiroshi Endo, Chiba, JP;
Toshio Yokobari, Chiba, JP;
Assignees:
Fuji Xerox Co., Ltd., Tokyo, JP;
Nippon Iron Powder Co., Ltd., Chiba, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
4301066 ; 430108 ;
Abstract
A carrier of developers composed of a composition represented by (MO).sub.X (Fe.sub.2 O.sub.3) having bulk density of 1.8-3.4 g/Cm.sup.3 and magnetization of 10-30 emu/g in a magnetic field of 450-1000 O (oersted), where M is at least one metal selected from the group comprising lithium, manganese, nickel, zinc, cadmium, copper, cobalt, and magnesium.