| 摘要 |
The liquid jet head (1) includes a base (2) having a plurality of pressure chambers (4) which include recesses (3), respectively, the pressure chambers being arranged in a front surface of the base in a predetermined direction, a piezoelectric substrate (5) which is joined to upper surfaces of the side walls (10) of the recesses. The piezoelectric substrate is uniformly polarized in a direction in parallel to a substrate surface of the piezoelectric substrate, and a pair of a front surface drive electrode (9a) and a back surface drive electrode (9b) on a front surface of the piezoelectric substrate, which is opposite to the pressure chamber side, and on a back surface of the piezoelectric substrate on the pressure chamber side, respectively, sandwich the piezoelectric substrate there between and extend to a side wall (10) of the recess substantially from a center of the open end. |
