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. 02, 2016
Filed:
Jan. 21, 2015
Fuji Xerox Co., Ltd., Tokyo, JP;
Yuji Terai, Kanagawa, JP;
Yohei Saito, Kanagawa, JP;
FUJI XEROX CO., LTD., Tokyo, JP;
Abstract
Provided is a charging roll, including a core body, and an elastic layer that is disposed on an outer circumferential surface of the core body, wherein, with respect to an approximation curve that extends an outer curve of the axial direction of the core body of an outer circumferential surface in a region other than both end portions of the outermost layer up to both end portions of the outermost layer, a maximum increase amount of the outer curve in both end portions of the outermost layer is equal to or less than 60 μm, and wherein a coefficient of friction of the outer circumferential surface at a position showing the maximum increase amount of the outer curve in both end portions of the outermost layer is equal to or less than 0.3, and a variation amount of the coefficient of friction is equal to or less than 30%.