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:
Sep. 30, 2014
Filed:
Jan. 25, 2007
Applicants:
Kazuo Ochiai, Kouriyama, JP;
Shinji Tanabe, Tokyo, JP;
Naoaki Narishige, Ichikawa, JP;
Inventors:
Assignee:
Nippon Chemical Industrial Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 13/08 (2006.01); G03G 9/00 (2006.01); G03G 9/097 (2006.01);
U.S. Cl.
CPC ...
G03G 9/09708 (2013.01);
Abstract
When being blended in a toner, a barium titanate external additive for toner enhances, in particular, the toner fluidity, electrical properties, and other relevant performance; concurrently achieves high image density and reduced background fog in a printer using the toner; and further reduces image defects, such as void, fading, and the like. An industrially advantageous producing method of the barium titanate external additive for toner is also provided. The external additive for toner of the present invention includes spherical barium titanate having a specific gravity of 5.6 g/ml or less.