Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2006-02-21
2006-02-21
Shah, Manish (Department: 2853)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S068000
Reexamination Certificate
active
07001014
ABSTRACT:
A piezoelectric thin film can achieve a large piezoelectric displacement. A chemical composition of the piezoelectric thin film is expressed by Pb1+a(ZrxTi1−x)O3+a(0.2≦a≦0.6 and 0.50≦x≦0.62). The crystal structure of the piezoelectric thin film is a mixture of a perovskite columnar crystal region (24) having an ionic defect in which a portion of the constitutive elements of an oxygen ion, a titanium ion, and a zirconium ion is missing and a perovskite columnar crystal region (25) of stoichiometric composition having no ionic defect. This configuration allows a residual compressive stress in the crystal to be relaxed by the perovskite columnar crystal region (24) having an ionic defect, thus achieving a large piezoelectric displacement (displacement amount).
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Kamada Takeshi
Kanno Isaku
Takayama Ryoichi
Torii Hideo
Hamre, Schumman, Mueller & Larson, P.C.
Shah Manish
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