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. 13, 2016
Filed:
Dec. 11, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
Michihisa Magome, Mishima, JP;
Takashi Matsui, Mishima, JP;
Kozue Uratani, Mishima, JP;
Atsuhiko Ohmori, Suntou-gun, JP;
Masaki Yamada, Mishima, JP;
Minoru Ito, Susono, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Provided is a developing apparatus, including toner for developing an electrostatic latent image, a toner carrier for carrying the toner, and a regulating member for regulating a layer thickness of the toner carried by the toner carrier. The toner carrier is placed to be brought into contact with the electrostatic latent image bearing member. The toner carrier includes a substrate, an elastic layer, and a surface layer containing a urethane resin. The urethane resin has a partial structure derived from a reaction between a compound represented by the structural formula (1) and a polyisocyanate. The toner contains toner particles each containing a binder resin and a magnetic material, and inorganic fine particles. The toner has a weight average particle diameter (D4) of from 9.5 μm to 14.0 μm. The toner has a porosity of 50 or more and 56 or less.