Piezoelectric element drive circuit and method


Application Number: 00107735
Application Date: 2000.05.24
Publication Number: 1274644
Publication Date: 2000.11.29
Priority Information: 1999/5/24 JP 143647/1999
International: B41J2/045
Applicant(s) Name: NEC Corp.
Address:
Inventor(s) Name: Narai Kyoichi
Patent Agency Code: 11021
Patent Agent: liu xiaofeng
Abstract A piezoelectric element driving circuit for driving a plurality of piezoelectric elements disposed in a plurality of head units is disclosed, that comprises a plurality of power amplifiers for driving the plurality of head units, a plurality of flexible flat cables for connecting the plurality of head units and the plurality of power amplifiers, and a drive waveform signal generating circuit for supplying a drive waveform signal to the plurality of head units, wherein each of the plurality of head units has a switch device wherein the plurality of power amplifiers are disposed corresponding to the plurality of head units, the plurality of power amplifiers supplying a drive waveform signal so as to drive the plurality of head units.