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:
May. 17, 2016
Filed:
Feb. 05, 2015
Fuji Xerox Co., Ltd., Tokyo, JP;
Akihisa Maruyama, Kanagawa, JP;
FUJI XEROX CO., LTD., Tokyo, JP;
Abstract
A development roller includes a substantially cylindrical development sleeve that has an axis and rotates about the axis; and a magnet portion that is provided in the development sleeve and has plural magnetic poles. The development sleeve has a surface and a groove in the surface along a direction of the axis. The development sleeve has an outer peripheral surface and the groove has a bottom portion, the development sleeve having a deflection of the outer peripheral surface in a radial direction of the development sleeve being larger than about 20 μm and smaller than about 30 μm, and a deflection of the bottom portion in the radial direction being equal to or smaller than about 35 μm.