Shear mode-type piezoelectric actuator and liquid droplet...

Details Shear mode-type piezoelectric actuator and liquid droplet... Shear mode-type piezoelectric actuator and liquid droplet...

2011-03-15

2011-03-15

Feggins, K. (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

07905579

ABSTRACT:
This invention provides a shear mode-type piezoelectric actuator using a piezoelectric ceramic composition free from lead having a high coercive electric field and a liquid ejection head having the shear mode-type piezoelectric actuator. The shear mode-type piezoelectric actuator is characterized by using a piezoelectric ceramic composition having a solid solution including a main component of general formula (1) and an auxiliary component of general formula (2) added in an amount of less than 1% by mole based on the total amount of the solid solution:in-line-formulae description="In-line Formulae" end="lead"?{LiX(K1-YNaY)1-X}(Nb1-Z-WTaZSbW)O3  General formula (1)in-line-formulae description="In-line Formulae" end="tail"?(Wherein 0≦x≦0.2, 0≦y≦1, 0<z≦0.4, 0<w≦0.2)in-line-formulae description="In-line Formulae" end="lead"?ABO3  General formula (2)in-line-formulae description="In-line Formulae" end="tail"?(Wherein A denotes Bi and B denotes at least one of Fe, In and Sc).

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U.S. Appl. No. 12/310,500, filed Feb. 26, 2009, Confirmation No. 6546.

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