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. 31, 2013
Filed:
Jan. 25, 2011
Applicant:
Takeshi Kawauchi, Okayama, JP;
Inventor:
Takeshi Kawauchi, Okayama, JP;
Assignees:
Dowa Electronics Materials Co., Ltd., Tokyo, JP;
Dowa IP Creation Co., Ltd., Okayama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The carrier core particlesfor electrophotographic developer contain lithium as a core composition. When the carrier core particlesare immersed in pure water at a weight ratio of 1 part core particlesto 10 parts pure water and shaken, the amount of lithium that leaches out to the pure water is 0.10 ppm or lower.