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:
May. 24, 2011
Filed:
Feb. 25, 2008
Yasuyuki Fukunaga, Kanagawa, JP;
Masatake Ohmori, Kanagawa, JP;
Mitsuo Shinya, Kanagawa, JP;
Hirokazu Goto, Kanagawa, JP;
Toshiaki Nomura, Kanagawa, JP;
Yasuyuki Fukunaga, Kanagawa, JP;
Masatake Ohmori, Kanagawa, JP;
Mitsuo Shinya, Kanagawa, JP;
Hirokazu Goto, Kanagawa, JP;
Toshiaki Nomura, Kanagawa, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
A motor drive device drives a stepping motor having a rotor mounted on a rotating shaft with a capability of making a transition between a plurality of excitation modes. A motor control unit drives the stepping motor by controlling the rotor to move to a position corresponding to an excitation modes. A stop control unit controls, when stopping the stepping motor, a stop of the rotor at a position to which the rotor is moved by the motor control unit common to the excitation modes after the stop of the rotor is issued.