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:
Mar. 31, 1987
Filed:
Apr. 14, 1983
Kiyoshi Horie, Kanagawa, JP;
Tsuneo Noami, Kanagawa, JP;
Koji Masuda, Kanagawa, JP;
Koichi Saitoh, Kanagawa, JP;
Kazuo Maruyama, Kanagawa, JP;
Yoshihiko Fujimura, Kanagawa, JP;
Yuji Suemitsu, Kanagawa, JP;
Toshiro Yamamoto, Kanagawa, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
In electrostatic latent image developing process capable of effecting either positive or negative reproduction a magnetic toner of a high resistivity is controlled to form a magnetic brush having a potential insufficient for development. The toner chain constituting the brush is separated under the influence of an electric field between the developing roll and the image carrier, to produce toner particles having one polarity continuing with the developing roll, and particles of the opposite polarity transferred to the carrier.