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:
Jan. 13, 2009
Filed:
Dec. 07, 2005
Yoichi Kamikoriyama, Ageo, JP;
Kenji Suzuoka, Ageo, JP;
Takashi Nakashima, Ageo, JP;
Kazuya Kinoshita, Ageo, JP;
Yuji Sato, Kashiwa, JP;
Hiromichi Kobayashi, Kashiwa, JP;
Takeshi Gondo, Kashiwa, JP;
Takashi Hikichi, Kashiwa, JP;
Yoichi Kamikoriyama, Ageo, JP;
Kenji Suzuoka, Ageo, JP;
Takashi Nakashima, Ageo, JP;
Kazuya Kinoshita, Ageo, JP;
Yuji Sato, Kashiwa, JP;
Hiromichi Kobayashi, Kashiwa, JP;
Takeshi Gondo, Kashiwa, JP;
Takashi Hikichi, Kashiwa, JP;
Mitsui Mining and Smelting Co., Ltd., Tokyo, JP;
Powdertech Co., Ltd., Chiba, JP;
Abstract
A carrier for electrophotographic developer comprises a resin carrier core comprising a binder resin and magnetic powder dispersed in the binder resin, and a coating layer comprising a coating resin on a surface of the core, the binder resin being a silicone resin obtained by curing of a polysiloxane compound (A) having an epoxy group and a polysiloxane compound (B) having a group capable of reacting with the epoxy group, due to a ring-opening addition reaction; the binder resin containing a functional group which is an epoxy group and/or a group capable of reacting with an epoxy group; the coating resin containing a functional group capable of reacting with the functional group of the binder resin; the functional group of the coating resin and the function group of the binder resin forming a chemical bond.