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:
Oct. 27, 2009
Filed:
Jul. 26, 2006
Junji Sato, Toyokawa, JP;
Junichi Tanii, Izumi, JP;
Yoshihiro Hara, Takatsuki, JP;
Akira Kosaka, Yao, JP;
Junji Sato, Toyokawa, JP;
Junichi Tanii, Izumi, JP;
Yoshihiro Hara, Takatsuki, JP;
Akira Kosaka, Yao, JP;
Konica Minolta Holdings, Inc., Tokyo, JP;
Abstract
Drive technology is provided which makes suitable low velocity driving and smooth changing of driving velocity possible and achieves reduced power consumption. In the driving device, the drive unit is driven which engages with drive shaft which moves back and forth in tandem with extension and contraction of the piezoelectric element. In this driving device, when the output cycle for cycle Te is repeated such that the voltages applied to the piezoelectric elementare the maximum value (+Vp), the minimum value (−Vp), and the middle value (0V), the movement velocity of the drive unitcan be changed by thinning the output cycle at cycle Tf. As a result, suitable low velocity driving can be carried out and power consumption can be reduced in the drive unit.