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:
Oct. 30, 2007
Filed:
Jun. 04, 2004
Yoichi Kamikoriyama, Saitama, JP;
Kenji Suzuoka, Saitama, JP;
Takashi Nakashima, Saitama, JP;
Kazuya Kinoshita, Saitama, JP;
Yuji Sato, Chiba, JP;
Hiromichi Kobayashi, Chiba, JP;
Takeshi Gondo, Chiba, JP;
Takashi Hikichi, Chiba, JP;
Yoichi Kamikoriyama, Saitama, JP;
Kenji Suzuoka, Saitama, JP;
Takashi Nakashima, Saitama, JP;
Kazuya Kinoshita, Saitama, JP;
Yuji Sato, Chiba, JP;
Hiromichi Kobayashi, Chiba, JP;
Takeshi Gondo, Chiba, JP;
Takashi Hikichi, Chiba, JP;
Mitsui Mining & Smelting Co., Ltd., Tokyo, JP;
Powdertech Co., Ltd., Chiba, JP;
Abstract
Provided are a carrier for electrophotography developers prepared by generating a slight amount of byproducts such as water, alcohol, etc, which carrier is free from release of a magnetic powder, has excellent mechanical strength and durability, and good environmental stability, and further can restrain occurrence of toner spent condition and has favorable fluidity and excellent capability of imparting charging to a toner, a two-component developer comprising the carrier and a method for forming an image using the developer. The carrier for electrophotography developers comprises a magnetic powder dispersed binder resin, the binder resin material comprises (A) a polysiloxane compound having an epoxy group as a functional group and (B) a polysiloxane compound having a group capable of ring-opening addition reaction with the epoxy group of the polysiloxane compound (A), and the binder resin is a silicone resin prepared by curing with ring-opening addition reaction of the epoxy resin. The developer comprises the carrier for electrophotography developers and the toner particle. The method for forming an image comprises developing a static latent image by the developer with an alternating electric field.