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. 13, 2016
Filed:
Jun. 26, 2013
Hiroyuki Kishida, Shizuoka, JP;
Shigenori Yaguchi, Shizuoka, JP;
Hiroshi Tohmatsu, Shizuoka, JP;
Koichi Sakata, Shizuoka, JP;
Hitoshi Iwatsuki, Shizuoka, JP;
Toyoaki Tano, Shizuoka, JP;
Hiroyuki Kishida, Shizuoka, JP;
Shigenori Yaguchi, Shizuoka, JP;
Hiroshi Tohmatsu, Shizuoka, JP;
Koichi Sakata, Shizuoka, JP;
Hitoshi Iwatsuki, Shizuoka, JP;
Toyoaki Tano, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
There is provided a carrier including magnetic core particles; and a coating layer on a surface of each of the magnetic core particles, wherein the coating layer contains electroconductive particles; wherein the electroconductive particles are electroconductive particles in which white inorganic pigments are coated with phosphorus-doped tin or tungsten-doped tin; and wherein a dope ratio of phosphorus or tungsten to tin in the phosphorus-doped tin or tungsten-doped tin is 0.010 to 0.100.