Patent ID: 6695439
Filing Date: 2004-02-24
Classification: B41J

Abstract:
A piezoelectric transducer, comprising:a piezoelectric plate, which is made of piezoelectric material and which has a pair of opposite surfaces, the piezoelectric plate having at least one actuating portion desired to be deformed and at least two non-actuating portions, each actuating portion being located as being interposed between corresponding two non-actuating portions, each actuating portion having a center, the piezoelectric plate being polarized in a pair of polarized directions, which are slanted with respect to both of a surface direction and a thickness direction and which are symmetrical with respect to the center of each actuating portion, the surface direction being defined along the opposite surfaces of the piezoelectric plate, the thickness direction being defined along a thickness of the piezoelectric plate and substantially perpendicular to the surface direction; and a pair of driving electrodes, each of which is provided on a corresponding surface of the piezoelectric plate, the pair of driving electrodes being for applying an electric field that extends substantially perpendicularly to the polarized directions, thereby causing the actuating portion to be deformed in a direction substantially perpendicular to the surface direction.