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Shear mode-type piezoelectric actuator and liquid droplet delivery head

A transmission device, piezoelectric technology, applied in the direction of inking device, piezoelectric effect/electrostrictive or magnetostrictive motor, generator/motor, etc., can solve the problems of manufacturing difficulties, environmental pollution, etc. , to achieve high frequency drive, improve the effect of displacement efficiency

Active Publication Date: 2009-08-19
KONICA MINOLTA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the piezoelectric ceramic composition composed of the above-mentioned PZT has excellent characteristics, but since lead is contained in its constituent elements, harmful lead is leached from industrial waste of PZT-containing products, so there is concern about causing environmental pollution
In recent years, due to the increasing awareness of environmental issues, it has become more and more difficult to manufacture products that cause environmental pollution such as PZT

Method used

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  • Shear mode-type piezoelectric actuator and liquid droplet delivery head
  • Shear mode-type piezoelectric actuator and liquid droplet delivery head
  • Shear mode-type piezoelectric actuator and liquid droplet delivery head

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Experimental program
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Effect test

Embodiment

[0117] A piezoelectric ceramic composition according to an example of the present invention was manufactured and its characteristics were evaluated.

[0118] The manufacturing method will be described in detail below.

[0119] First, high-purity Li with a purity of 99% or more is prepared as a raw material for the main component of the piezoelectric ceramic composition. 2 CO 3 、Na 2 CO 3 、K 2 CO 3 , Nb 2 o 5 、 Ta 2 o 5 , Sb 2 o 5 . After fully drying, using the above general formula {Li X (K 1-Y Na Y ) 1-X}(Nb 1-Z-W Ta Z Sb W )O 3 The stoichiometric ratio of x=0.04, y=0.52, z=0.1, w=0.06, that is, the above general formula is {Li 0.04 (K 0.48 Na 0.52 ) 0.96}(Nb 0.84 Ta 0.1 Sb 0.06 )O 3 The stoichiometric ratio was prepared.

[0120] Then mix the prepared raw materials in anhydrous acetone by ball milling for 24 hours, dry and prepare the mixture.

[0121] Next, the mixture was preliminarily calcined at 750° C. for 5 hours, and the preliminarily cal...

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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, General formula (1) {LiX(K1-YNaY)1-X}(Nb1-Z-WTaZSbW)O3 (Wherein 0< / =x< / =0.2, 0< / =y< / =1, 0<z< / =0.4, 0<w< / =0.2) General formula (2) ABO3 (Wherein A denotes Bi and B denotes at least one of Fe, In and Sc).

Description

technical field [0001] The present invention relates to a shear mode piezoelectric actuator and a droplet discharge head. Background technique [0002] As the piezoelectric ceramic composition, lead-containing PZT (PbTiO 3 -PbZrO 3 ) The composition is ceramics. This is because the above-mentioned PZT exhibits large piezoelectricity and has a high mechanical quality coefficient, and can easily produce materials with various characteristics to meet the requirements of various applications such as sensors, actuators, and filters. Furthermore, since the above-mentioned PZT has a high relative permittivity, it can also be used as a capacitor or the like. [0003] However, the piezoelectric ceramic composition composed of the above-mentioned PZT has excellent characteristics, but since its constituent elements contain lead, harmful lead is eluted from industrial waste of PZT-containing products, so there is concern about causing environmental pollution. In recent years, due t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L41/09B41J2/045B41J2/055C04B35/00H01L41/187H02N2/00H01L41/39
CPCC04B2235/768C04B2235/3201B41J2002/14225C04B2235/3274B41J2/14209C04B2235/3286C04B2235/3294C04B35/495B41J2202/03H01L41/187C04B2235/3203C04B2235/3224C04B2235/3298H10N30/853
Inventor 浦木信吾
Owner KONICA MINOLTA INC
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