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. 16, 2016
Filed:
Nov. 04, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
Kazunari Hagiwara, Yokohama, JP;
Tatsuaki Orihara, Tokyo, JP;
Shuhei Tokiwa, Tokyo, JP;
Yasuyuki Matsumoto, Kawasaki, JP;
Manami Haraguchi, Yokohama, JP;
Atsushi Nakamoto, Tokyo, JP;
Yasuhiro Horiguchi, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A developing roller that is capable of carrying toner on a surface thereof, and that supplies the toner carried on the surface to a surface of a photosensitive drum when a voltage is applied thereto, includes: an elastic layer; and a surface layer that covers the elastic layer and contains aluminum oxide, wherein the aluminum oxide of the surface layer contains tetracoordinated aluminum atoms and hexacoordinated aluminum atoms existing in a higher proportion than the tetracoordinated aluminum atoms.