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:
Aug. 24, 2010
Filed:
May. 11, 2006
Atsushi Hirota, Nagoya, JP;
Chitoshi Ueki, Kokubu, JP;
Atsushi Hirota, Nagoya, JP;
Chitoshi Ueki, Kokubu, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Abstract
The lnkjet printer has a pressure chamber, a plezoelectric actuator, and a controller. The plezoelectrlc actuator has a piezoelectric film, a first electrode, a second electrode, and a third electrode. The first electrode, positioned in the region facing the pressure chamber, and the third electrode, positioned adjacent to the first electrode, are attached on one surface of the piezoeiectric film. The second electrode is attached on an opposite surface of the piezoelectric film and overlaps the first and third electrodes. To discharge ink, the controller applies an ink discharge signal between the first and second electrodes comprising an advanced voltage change from a predetermined voltage to the lower voltage and a subsequent voltage change from the lower voltage to the predetermined voltage. The controller also applies a peripheral signal between the second and thIrd electrodes to prevent changes in characteristics of the piezoelectrlc actuator that may affect ink discharge.