| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a liquid discharge device having a piezoelectric actuator having grooves on a piezoelectric layer, capable of suppressing variations in liquid discharge speeds among plural nozzles, by changing positions and shapes of the grooves.SOLUTION: A piezoelectric actuator 21 has plural grooves 51, 52 formed on circumferential parts of plural pressure chambers 37, of a piezoelectric layer 44. The plural grooves 51, 52 have different positions or shapes according to parameters related to ink discharge speeds corresponding nozzles 34, respectively.</p> |
