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:
Jun. 21, 2011
Filed:
Mar. 30, 2007
Applicants:
Issei Shinmura, Kashiwa, JP;
Kanao Kayamoto, Kashiwa, JP;
Inventors:
Issei Shinmura, Kashiwa, JP;
Kanao Kayamoto, Kashiwa, JP;
Assignee:
Powertech Co., Ltd., Kashiwa-shi, Chiba, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
There are adopted an electrophotographic resin-coated ferrite carrier having a carrier core coated with a resin, wherein a product of an apparent density ρ (g/cm), average particle size d (μm) and BET specific surface area S (m/g) of the carrier core satisfies the following condition, a method for producing the same, and an electrophotographic developer.4.5≦ρ×8.5 (20≦≦45)