| 摘要 |
A piezoelectric transducer having inner electrodes placed on each laminated piezoelectric ceramic layer. The inner electrodes include a center electrode centered over each ink channel, two end electrodes aligned with partition walls defining each ink channel, and two border electrodes located between the center electrode and the two end electrodes. In each layer, two second areas defined by the two border electrodes and the two end electrodes are polarized in the laminating direction of the ceramic layers. Upon application of a drive voltage to the inner electrodes for a selected ink channel, resultant electric fields cause the two second areas in each layer over the selected ink channel to deform outwardly into parallelogram shapes by a shear effect, and cause two first areas in each layer over the selected ink channel to deform to enhance the deformation of the two second areas.
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