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:
Mar. 29, 2016
Filed:
Nov. 05, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
Tatsuaki Orihara, Tokyo, JP;
Shuhei Tokiwa, Tokyo, JP;
Kazunari Hagiwara, Yokohama, JP;
Manami Haraguchi, Yokohama, JP;
Makoto Fukatsu, Suntou-gun, JP;
Atsushi Nakamoto, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
In an image forming apparatus having a photosensitive drum that carries a toner image, a developing roller is provided to be capable of rotating while carrying toner and supplies the toner to the photosensitive drum in order to develop a latent image, and a voltage applying device applies a voltage to the developing roller. The developing roller includes a conductive base layer and a surface layer covering the base layer, and a surface charge density of the developing roller is equal to or smaller than a surface charge density of the toner.