| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid jet head which inhibits increase of residual strain thereby inhibiting the deterioration of displacement magnitude of a piezoelectric element over a long period and achieves high reliability, and to provide a liquid jet device and an actuator device.SOLUTION: A liquid jet head includes: a passage formation substrate 10 provided with a pressure generation chamber 12 which communicates with a nozzle opening 21 for jetting a liquid; and an actuator device including a diaphragm 50 provided on the one surface side of the passage formation substrate 10 and multiple piezoelectric elements 300 formed on the diaphragm 50. The actuator device includes: two first piezoelectric elements 301 placed on facing positions at an end part of the pressure generation chamber 12 when viewed in at least one direction; and a second piezoelectric element 302 placed between the first piezoelectric elements 301. |
