Patent ID: 6863383
Filing Date: 2005-03-08
Classification: B41J

Abstract:
1. A piezoelectric transducer, comprising: a plurality of piezoelectric ceramic layers; and a plurality of electrodes spaced in a direction along a plane of the piezoelectric ceramic layers as well as in a thickness direction of the piezoelectric ceramic layers, the plurality of electrodes including: wherein upon application of a drive voltage to the first and second sets of electrodes, an electric field is generated in each of the second areas perpendicular to the polarization direction and each of the second areas is obliquely deformed by a piezoelectric shear effect to unidirectionally shift the first area, and an electric field is generated in the first area parallel to the polarization direction and the first area is deformed by a piezoelectric longitudinal effect to increase the thickness of the piezoelectric ceramic layers.