| 摘要 |
In a liquid transporting apparatus, when a thickness of a vibration plate is Tv (mm), a coefficient of elasticity of the vibration plate is Ev (kg/mm2), a thickness Tp of a piezoelectric layer is Tp (mm), a coefficient of elasticity of the piezoelectric layer is Ep (kg/mm2), a length of a pressure chamber is Wc (mm), a length of partition wall sections in a width direction of the pressure chamber is Wa (mm), a thickness Ta of an adhesive layer interposed between the partition wall sections and the vibration plate is Ta (mm), a coefficient of elasticity of the adhesive layer is Ea (kg/mm2), and further when A=((Tv+Tp)3x(Ev+Ep)/2)/Wc1/2 and B=EaxWa/Ta, values of A and B satisfy a relationship of -0.03A-1200(1/B)+0.08>0. Accordingly, a fluctuation in a liquid transporting velocity due to difference in drive patterns of pressure chambers can be suppressed assuredly without performing any special process on a piezoelectric actuator.
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