Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Reexamination Certificate
2006-05-16
2006-05-16
Dougherty, Thomas M. (Department: 2834)
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
Reexamination Certificate
active
07045935
ABSTRACT:
An actuator comprises a laminated structure having a vibration plate, a lower electrode, a piezoelectric element, and an upper electrode laminated sequentially on a basic element, and then, at least the lower electrode of the two electrodes is a thin oxide film doped with La of single orientated crystal or monocrystal that contains Sr and Ti. Thus, it is made possible to materialize the micro miniaturized actuator having a strong structure of lamination with high adhesion, which is capable of obtaining large displacement with sufficient durability without spoiling the piezo-electrostrictive property thereof even with the small thickness of the piezoelectric element. With the micro miniaturized actuator thus structured, it is made possible to make a liquid discharge head more precisely.
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Ifuku Toshihiro
Matsuda Takanori
Takeda Ken'ichi
Wasa Kiyotaka
Canon Kabushiki Kaisha
Dougherty Thomas M.
Fitzpatrick ,Cella, Harper & Scinto
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