| 摘要 |
PROBLEM TO BE SOLVED: To remove air bubbles accumulated in a bent part certainly and easily, even in case an inkjet head is constructed so that an ink flows bending into a pressure chamber almost orthogonally from a communicating hole in a cavity unit. SOLUTION: The inkjet head 1 is designed in such a way that the pressure chamber 24, covered by an actuator 21, allows the ink to flow along the actuator 21 toward one end 24b connected with a nozzle 23 from the other end 24a connected with the communicating hole 28, and that the communicating hole 28 is formed almost at right angles with the ink flowing direction in the pressure chamber 24 and also in an opposite direction to the actuator 21. Further, the ink passing through the communicating hole 28, is bent in its flow almost orthogonally at one end of the pressure chamber 24. Besides, a recessed part 50 is formed, at each pressure chamber 24, in the region of the actuator 21 corresponding with the communicating hole 28, in order to widen a section S1 at right angles with the flow of the ink at one end 24a of the pressure chamber 24. COPYRIGHT: (C)2007,JPO&INPIT
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