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:
Sep. 01, 2020
Filed:
Jul. 26, 2019
Fuji Xerox Co., Ltd., Tokyo, JP;
Kosuke Narita, Kanagawa, JP;
Akihiro Nonaka, Kanagawa, JP;
Hiroko Kobayashi, Kanagawa, JP;
Yasuhiko Kinuta, Kanagawa, JP;
Fuyuki Kano, Kanagawa, JP;
Yuki Tagawa, Kanagawa, JP;
FUJI XEROX CO., LTD., Tokyo, JP;
Abstract
A charging device includes: a charging member that charges an image holding member according to a contact charging method, and includes a conductive substrate and a surface layer provided on the conductive substrate; and a clean member that cleans the charging member while contacting the charging member, and includes a shaft and a foamed elastic layer provided on the shaft, wherein a ratio of a distance between irregularities in an axial direction of the surface layer in the charging member (Sm) to a width of a nodal section of a foam cell wall surface protruding from a surface of the foamed elastic layer in the clean member (W) satisfies 2.4≤Sm/W≤5.9.