Title:
An electrostrictive actuator and a liquid discharge device
Document Type and Number:
Japanese Patent JP6107520
Kind Code:
B2
Abstract:
There is provided a piezoelectric actuator, including: first and second piezoelectric layers; a driving electrode arranged between the first and second piezoelectric layers; a second electrode maintained at a predetermined first electrical potential; and a third electrode maintained at a second electrical potential. A neutral plane of the piezoelectric actuator is positioned at a side opposite to the second piezoelectric layer relative to a center plane of the first piezoelectric layer in a direction of stacking of the first and second piezoelectric layers. A first portion of the first piezoelectric layer is sandwiched between the driving electrode and the second electrode, and a second portion of the second piezoelectric layer is sandwiched between the driving electrode and the third electrode. The first and second portions are polarized parallel to the stacking direction such that they are polarized in mutually opposite directions.
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Inventors:
Mizuno Taisuke
Takebayashi Mizuyo
Naito Kyohei
God Saki Shotaro
Masato Sueyasu
Keiji Kura
Takebayashi Mizuyo
Naito Kyohei
God Saki Shotaro
Masato Sueyasu
Keiji Kura
Application Number:
JP2013159708A
Publication Date:
April 05, 2017
Filing Date:
July 31, 2013
Export Citation:
Assignee:
Brother Industries, Ltd.
International Classes:
B41J2/14
Domestic Patent References:
| JP2010232604A | ||||
| JP2010262958A | ||||
| JP2010155386A | ||||
| JP2009083182A | ||||
| JP2010129760A | ||||
| JP2012156185A |
Attorney, Agent or Firm:
Yoshiyuki Kaji
Makoto Suhara
Toru Kimura
Makoto Suhara
Toru Kimura