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. 12, 2015
Filed:
Dec. 27, 2010
Koichi Sakata, Shizuoka-ken, JP;
Minoru Masuda, Shizuoka-ken, JP;
Hisashi Nakajima, Shizuoka-ken, JP;
Kimitoshi Yamaguchi, Shizuoka-ken, JP;
Yutaka Takahashi, Kanagawa-ken, JP;
Hitoshi Iwatsuki, Shizuoka-ken, JP;
Saori Yamada, Shizuoka-ken, JP;
Toyoaki Tano, Shizuoka-ken, JP;
Koichi Sakata, Shizuoka-ken, JP;
Minoru Masuda, Shizuoka-ken, JP;
Hisashi Nakajima, Shizuoka-ken, JP;
Kimitoshi Yamaguchi, Shizuoka-ken, JP;
Yutaka Takahashi, Kanagawa-ken, JP;
Hitoshi Iwatsuki, Shizuoka-ken, JP;
Saori Yamada, Shizuoka-ken, JP;
Toyoaki Tano, Shizuoka-ken, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
A carrier for use in a two component developer for developing an electrostatic latent image is provided. The carrier includes a particulate core material; and a cover layer located on a surface of the core material and including a silicone resin and barium sulfate. The cover layer includes Ba and Si at an atomic ratio of from 0.01 to 0.08 as determined by X-ray photoelectron spectroscopy.