Oliff & Berridge
Longitudinal-effect type laminar piezoelectric/electrostrictive driver, and printing actuator using the driver
 A laminar longitudinal-effect type piezoelectric or electrostrictive driver which is displaced upon application of an electric field thereto. The driver includes laminar electro-mechanical converting elements each undergoes a displacement in a direction of the electric field due to the longitudinal mode of the reverse piezoelectric effect or the electrostrictive effect, and the temperature compensating elements each of which is interposed between the appropriate adjacent two laminar electro-mechanical converting elements. The temperature compensating elements have a higher coefficient of linear thermal expansion in the direction of the electric field or direction of displacement of the driver. The driver is suitably usable for an actuator for operating a print element of a printer, for example. 
Brother Kogyo Kabushiki Kaisha
H H H
H02N H04R H01L
inventional additional inventional
Yoshikazu Masaaki Masahiko Makoto
Takahashi Deguchi Suzuki Takeuchi