| 摘要 |
An inkjet head including (a) an ink channel unit and (b) an actuator unit which are superposed on each other. The ink channel unit has (a- 1 ) nozzles, (a- 2 ) first recesses which are held in communication with the nozzles and which are formed in a recessed surface of the ink channel unit, and (a- 3 ) second recesses which are isolated from the nozzles and which are formed in the recessed surface. The actuator unit has (b- 1 ) a piezoelectric sheet straddling the first recesses, (b- 2 ) individual electrodes located in positions opposed to the respective first recesses, and (b- 3 ) a common electrode cooperating with each of the individual electrodes to define a portion of the piezoelectric sheet which is located between the common electrode and the each of the individual electrodes The actuator unit is fixed to the recessed surface of the ink channel unit by an adhesive, such that the first recesses are closed by the actuator unit so as to provide respective pressure chambers.
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