| 摘要 |
The ink replenishment frequency is increased in an inkjet head having nozzles for injecting ink. Independent dampers (13) are provided in ink supply passages (18) to impart an acoustic capacitance to the ink supply passages (18), and therefore a reciprocal action is generated between the pressure chambers (16) and the ink supply passages (18), whereby the operation of ink replenishment can be stimulated. Accordingly, the ink replenishment frequency can be increased by a factor of approximately {square root}3, without having to provide functional elements in the ink supply passage.
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