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:
Dec. 04, 2018
Filed:
Apr. 17, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Hiroaki Watanabe, Odawara, JP;
Takumi Furukawa, Susono, JP;
Yuya Tomomizu, Yokohama, JP;
Kenya Terada, Suntou-gun, JP;
Toshiro Suzuki, Gotemba, JP;
Kenichi Yazawa, Suntou-gun, JP;
Kazuhiro Gesho, Kariya, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
The charging member includes: an electroconductive support; and an electroconductive elastic layer serving as a surface layer, wherein the elastic layer contains a binder, and holds electrically insulating hollow particles in such a state that at least a part of each of the hollow particles is exposed at a surface of the elastic layer, wherein the charging member has protrusions derived from the hollow particles in an outer surface of the charging member, and the outer surface of the charging member includes an outer surface of the elastic layer and an outer surface of an exposed portion of each of the hollow particles, and wherein the protrusions each have a depression in an outer surface of each of the protrusions, and an edge of the depression constitutes an apex in each of the protrusions.