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:
Jul. 28, 2009
Filed:
Aug. 25, 2006
Hiromichi Kobayashi, Kashiwa, JP;
Tsuyoshi Itagoshi, Kashiwa, JP;
Tomoyuki Suwa, Kashiwa, JP;
Toshio Honjo, Kashiwa, JP;
Hiromichi Kobayashi, Kashiwa, JP;
Tsuyoshi Itagoshi, Kashiwa, JP;
Tomoyuki Suwa, Kashiwa, JP;
Toshio Honjo, Kashiwa, JP;
Powdertech Co., Ltd., Kashiwa-shi, Chiba, JP;
Abstract
A carrier for an electrophotographic developer which is used as an electrophotographic developer in a mixture with a toner and which secures sufficiently the image density and can maintain high-quality images for a long period, and an electrophotographic developer using the carrier, are provided. A resin-filled ferrite carrier for electrophotographic developer obtained by filling, with a resin, avoid of a porous ferrite core whose void continues from the surface to reach the interior of the core, the carrier comprising a plurality of three-dimensional laminate structures in which resin layers and ferrite layers are alternately present, and an electrophotographic developer including the carrier and a toner, are employed.