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:
Dec. 23, 2014
Filed:
Mar. 08, 2013
Shigenori Yaguchi, Shizuoka, JP;
Hiroshi Tohmatsu, Shizuoka, JP;
Koichi Sakata, Shizuoka, JP;
Hitoshi Iwatsuki, Shizuoka, JP;
Hiroyuki Kishida, Shizuoka, JP;
Toyoaki Tano, Shizuoka, JP;
Shigenori Yaguchi, Shizuoka, JP;
Hiroshi Tohmatsu, Shizuoka, JP;
Koichi Sakata, Shizuoka, JP;
Hitoshi Iwatsuki, Shizuoka, JP;
Hiroyuki Kishida, Shizuoka, JP;
Toyoaki Tano, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A carrier for developing electrostatic latent image, including a particulate magnetic core material; and a coated layer covering the surface of the particulate magnetic core material, wherein the coated layer includes a resin including a silicone resin and a methacrylic ester or an acrylic ester resin, and a filler including a substrate; and an electroconductive layer comprising tin dioxide (SnO), overlying the substrate, and wherein the carrier includes tin (Sn) in an amount not less than 0.5% by atom and has a ratio (Sn/Si) of tin (Sn) to silicon (Si) of from 0.03 to 0.2 when subjected to an XPS analysis.