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. 17, 2018

Filed:

Jun. 30, 2016
Applicants:

Yoshihiro Asano, Kanagawa, JP;

Shingo Nagatsuka, Kanagawa, JP;

Takuya Murata, Tokyo, JP;

Kentaroh Kurosu, Kanagawa, JP;

Motoharu Takahashi, Kanagawa, JP;

Inventors:

Yoshihiro Asano, Kanagawa, JP;

Shingo Nagatsuka, Kanagawa, JP;

Takuya Murata, Tokyo, JP;

Kentaroh Kurosu, Kanagawa, JP;

Motoharu Takahashi, Kanagawa, JP;

Assignee:

Ricoh Company, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 1/04 (2006.01); B65H 7/20 (2006.01); H02P 3/02 (2006.01); B65H 5/06 (2006.01); G03G 15/00 (2006.01);
U.S. Cl.
CPC ...
B65H 7/20 (2013.01); B65H 5/062 (2013.01); G03G 15/5004 (2013.01); H02P 3/025 (2013.01); B65H 2403/92 (2013.01); B65H 2513/512 (2013.01); B65H 2515/702 (2013.01); B65H 2515/704 (2013.01); B65H 2801/06 (2013.01);
Abstract

A motor control device includes: an electric-current detection unit configured to detect an electric current that flows through a motor at a time when the motor is not to be driven; a voltage-polarity determining unit configured to determine polarity of a voltage corresponding to the detected electric current; and an operating-state management unit configured to perform control of stopping the motor depending on the polarity of the voltage.


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