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.

Date of Patent:
Apr. 21, 2015

Filed:

Oct. 03, 2013
Applicant:

Kyocera Document Solutions Inc., Osaka, JP;

Inventor:

Yukihiro Aikawa, Osaka, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/09 (2006.01); G03G 15/08 (2006.01);
U.S. Cl.
CPC ...
G03G 15/0829 (2013.01); G03G 15/0853 (2013.01);
Abstract

In an image forming apparatus, the magnetic sensor obtains an output value varying with a magnetic toner amount in a development device. The correlative data storing part prestores correlative data relating to the output value when there is no magnetic toner in the development device and the output value when the magnetic toner amount is a predetermined setting value. The standard value storing part prestores an initial value of a standard value being the output value when the magnetic toner amount is the setting value. The standard value setting part makes the standard value storing part store the output value corresponding to the magnetic toner amount being the setting value, as new standard value, by the output value when there is no magnetic toner in the development device and the correlative data. The toner amount deciding part decides the magnetic toner amount by the output value and the standard value.


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