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:
May. 05, 2015
Filed:
Mar. 12, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Satoshi Otake, Numazu, JP;
Masayoshi Shimamura, Yokohama, JP;
Yasutaka Akashi, Yokohama, JP;
Takuma Matsuda, Susono, JP;
Minoru Ito, Susono, JP;
Kazuhito Wakabayashi, Mishima, JP;
Atsushi Noguchi, Numazu, JP;
Hironori Mori, Mishima, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A developer carrying member is provided the surface layer of which can make a developer stable by controlling its triboelectric charging strongly and which can maintain a high image quality over a long period of time even where a developer made highly spherical-particle or a small-particle developer is used. The developer carrying member has a substrate and a surface layer. The surface layer is a cured product of a resin composition containing a binder resin, conductive particles, a quaternary ammonium salt and an azo metal complex compound, the binder resin has in the molecular structure at least one structure selected from the group consisting of an —NHgroup, an ═NH group and an —NH— linkage, and the azo metal complex compound is a compound represented by the formula (1) as defined in the specification.