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:
Oct. 12, 1976
Filed:
May. 13, 1975
Toshio Nagashima, Ebina, JA;
Mitsuharu Nakaguchi, Ebina, JA;
Takuzo Tsukamoto, Ebina, JA;
Ryuzo Okada, Ebina, JA;
Hidetoshi Kito, Ebina, JA;
Kenichi Handa, Ebina, JA;
Fuji Xerox Co., Ltd., Tokyo, JA;
Abstract
In a magnetic brush developing device, the improvements comprising a plurality of developing rollers consisting of cylindrical stationary magnets each having a developing magnetic pole and disposed in facing relation to the surface of latent image forming member, and cylindrical sleeves rotating around each of said stationary magnets, said plurality of developing rollers being arranged along the surface of said latent image forming member in a manner that the developing magnetic poles have alternately opposite polarities, whereby delivery and receipt of the developing agent between the adjacent developing rollers are effected between the developing magnetic poles of adjacent developing rollers.