| 摘要 |
An ink-jet printing head including a cavity unit and an actuator superposed on each other, wherein the cavity unit has (a) a plurality of nozzles open in a front surface thereof and arranged in at least one row, (b) a plurality of pressure chambers corresponding to the nozzles, (c) a plurality of communication passages for communication between the respective pressure chambers and the respective nozzles, and (d) a manifold portion for storing an ink supplied from an ink supply source and re-filling the pressure chambers, and the actuator has a plurality of active portions which correspond to the respective pressure chambers and which are selectively operable to deliver the ink from the corresponding nozzles. The manifold portion or the actuator, or each of the manifold portion and the actuator consists of a plurality of divisions corresponding to respective length portions of each row of the nozzles and which are arranged in a direction substantially parallel to a direction of extension of each row of the nozzles.
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