| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a liquid jet head 1 capable of restricting the deterioration of a piezoelectric body by applying a reverse voltage to the piezoelectric body, without generating positive and negative high voltages. <P>SOLUTION: The liquid jet head 1 includes: a channel CA surrounded by wall members at least partially formed of a piezoelectric body PM that is subjected to polarization processing in one direction; a pair of electrodes EL sandwiching the piezoelectric body PM, for applying an electric field in a direction substantially orthogonal to the one direction; and a drive section CR for driving the piezoelectric body PM by setting the voltage of one of the pair of electrodes EL to a low voltage Vu having a small absolute value, and supplying a drive signal Vs to the other one of the pair of electrodes EL. The drive section CR includes a switching element SW for switching the voltage of the one of the pair of electrodes EL from the low voltage Vu to a high voltage Vh having a large absolute value. <P>COPYRIGHT: (C)2012,JPO&INPIT |
