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. 09, 2013
Filed:
Oct. 01, 2010
Hisashi Nakajima, Numazu, JP;
Kimitoshi Yamaguchi, Numazu, JP;
Minoru Masuda, Numazu, JP;
Yutaka Takahashi, Yokohama, JP;
Koichi Sakata, Shizuoka-ken, JP;
Hitoshi Iwatsuki, Numazu, JP;
Saori Yamada, Numazu, JP;
Toyoaki Tano, Numazu, JP;
Hisashi Nakajima, Numazu, JP;
Kimitoshi Yamaguchi, Numazu, JP;
Minoru Masuda, Numazu, JP;
Yutaka Takahashi, Yokohama, JP;
Koichi Sakata, Shizuoka-ken, JP;
Hitoshi Iwatsuki, Numazu, JP;
Saori Yamada, Numazu, JP;
Toyoaki Tano, Numazu, JP;
Ricoh Company Limited, Tokyo, JP;
Abstract
A carrier, including a magnetic particulate core material and a resin layer on the core material, wherein the resin layer includes a resin obtained by heat treatment of a copolymer including a site derived from a monomer component having the following formula (1) and a site derived from a monomer component having the following formula (2), and includes a cross-linked material obtained by hydrolysis of the copolymer to produce a silanol group and condensation using an organotitanium compound: wherein Rrepresents a hydrogen atom or a methyl group; m represents an alkylene group having 1 to 8 carbon atoms; Rrepresents an alkyl group having 1 to 4 carbon atoms; Rrepresents an alkyl group having 1 to 8 carbon atoms, or an alkoxy group having 1 to 4 carbon atoms; X represents 10 to 90 mol %; and Y represents 10 to 90 mol %.