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. 01, 2015
Filed:
Jun. 20, 2014
Applicant:
Kyocera Document Solutions Inc., Osaka, JP;
Inventor:
Kimihiko Kobayashi, Osaka, JP;
Assignee:
KYOCERA Document Solutions Inc., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 15/08 (2006.01);
U.S. Cl.
CPC ...
G03G 15/086 (2013.01); G03G 15/0889 (2013.01);
Abstract
An image forming apparatus includes a developing device, a magnetic permeability detecting part and a developer amount measuring part. The developing device develops an image carrier by a contained developer. The magnetic permeability detecting part detects magnetic permeability of the developer in the developing device. The developer amount measuring part calculates a duty ratio of the magnetic permeability of the developer in the developing device on the basis of detected result of the magnetic permeability detecting part and measures a developer amount in the developing device on the basis of the duty ratio.