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:
Apr. 14, 1987
Filed:
Dec. 27, 1983
Applicant:
Inventors:
Fuchio Kanno, Yokohama, JP;
Kazuo Kobayashi, Kawasaki, JP;
Koji Sakamoto, Tokyo, JP;
Toshio Kaneko, Tokyo, JP;
Wataru Yasuda, Yokohama, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
118648 ; 118651 ; 118653 ; 355 / ;
Abstract
A device for developing an electrostatic latent image formed on a photosensitive member includes a composite sleeve which is comprised of a cylindrical support, a dielectric layer formed on the support and a plurality of fine magnets serving as floating electrodes embedded in the dielectric layer and which is driven to rotate to carry magnetic toner as magnetically attracted to its outer peripheral surface.