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:
Jul. 28, 2015
Filed:
Aug. 13, 2013
Natsuko Ishizuka, Kanagawa, JP;
Takuya Murata, Tokyo, JP;
Hiroyuki Kiguchi, Kanagawa, JP;
Takeo Seki, Kanagawa, JP;
Natsuko Ishizuka, Kanagawa, JP;
Takuya Murata, Tokyo, JP;
Hiroyuki Kiguchi, Kanagawa, JP;
Takeo Seki, Kanagawa, JP;
RICOH COMPANY, LIMITED, Tokyo, JP;
Abstract
A motor control device supplies a drive control signal to a drive circuit that drives a motor at a constant period using a motor drive signal based on the drive control signal, and shuts off the motor drive signal when a count value counted by a counter that reset the count value if a state of the motor changes exceeds a threshold corresponding to a plurality of driving periods of the motor. The motor control device includes: a control unit that controls a setting unit to set a rotational direction of the motor to a first rotational direction and a second rotational direction reverse to the first rotational direction at the constant period alternately, when a drive mode of the motor is a position holding mode to drive the motor so as to hold a rotational position of the motor.