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. 10, 2011
Filed:
Sep. 29, 2006
Ayumu Matsumoto, Kirishima, JP;
Naoto Iwao, Nagoya, JP;
Ayumu Matsumoto, Kirishima, JP;
Naoto Iwao, Nagoya, JP;
Kyocera Corporation, Kyoto, JP;
Brother Kogyo Kabushiki Kaisha, Aichi, JP;
Abstract
It is possible to minimize the amplitude of residual vibration of a piezoelectric actuator so as to maintain the image quality of a formed image at a preferable level in case of an ink jet head, for example. A liquid discharge device includes a control unit () for ON/OFF control of a drive voltage applied to the piezoelectric actuator. The control unit () has a micro vibration control section () for drive-controlling a drive circuit so as to micro-vibrate the piezoelectric actuator in a waiting state not discharging a liquid drop from a nozzle, in a range that no liquid drop is discharged in the nozzle. The piezoelectric ink jet head includes the liquid discharge device. The drive method is for micro-vibrating the piezoelectric actuator in the waiting state not discharging a liquid drop from the nozzle, in a range that no liquid drop is discharged from the nozzle.