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. 30, 2013
Filed:
Apr. 07, 2009
Teruhiko Fujikura, Toyokawa, JP;
Munehiro Natsume, Toyokawa, JP;
Mutsuto Oe, Hoi-gun, JP;
Yuji Kobayashi, Toyohashi, JP;
Hiroyuki Yoshikawa, Toyohashi, JP;
Katsuyuki Ikuta, Toyokawa, JP;
Teruhiko Fujikura, Toyokawa, JP;
Munehiro Natsume, Toyokawa, JP;
Mutsuto Oe, Hoi-gun, JP;
Yuji Kobayashi, Toyohashi, JP;
Hiroyuki Yoshikawa, Toyohashi, JP;
Katsuyuki Ikuta, Toyokawa, JP;
Konica Minolta Business Technologies, Inc., Chiyoda-Ku, Tokyo, JP;
Abstract
A mount damper comprises electrode plates placed on a motor side and a support body side respectively, a control unit for adjusting voltage between the electrode plates, and an electrostrictive polymer member for changing a distance between the electrode plates by the voltage therebetween. The electrostrictive polymer member is also an elastic body sandwiched between the electrode plates and has a hardness changeable with a change in the interelectrode distance. A motor is mounted through this mount damper. The control unit adjusts voltage applied between the electrode plates to a value different from a value causing resonance of the motor and the electrostrictive polymer member, thereby absorbing vibration of the motor during rotation thereof, irrespective of a rotation speed. Thus, the mount damper and the image forming apparatus using it can reliably prevent resonance and absorb vibration constantly even if a device selectively uses plural levels of the rotation speed.