| 摘要 |
An inkjet head has: a channel unit having a plurality of nozzles and a plurality of pressure chambers respectively communicating with the nozzles; and an actuator unit on the channel unit and having a piezoelectric sheet, a plurality of individual electrodes respectively arranged to positionally correspond to the pressure chambers respectively and a common electrode sandwiching the piezoelectric sheet together with the plurality of individual electrodes. The actuator unit has a thickness of 20 mum to 100 mum and a surface roughness of the end face of the actuator unit including an intersection with channel unit and the actuator unit is 0.15 mum to 0.5 mum, and at least part of the end face is sealed by a resin film.
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