| 摘要 |
PROBLEM TO BE SOLVED: To release from the designing of a fluid passage wherein a flowing speed of ink at an irregular portion such as a nozzle in an ink pressurizing chamber is to be greater than that at the other portion in order to allow a bubble attached to the irregular portion to flow therefrom. SOLUTION: A pressure wave of which the frequency is greater than that of ink ejection is applied to a portion in the vicinity of a nozzle so that the ink flow for guiding bubbles at the portion to a pressurizing chamber is created thereby removing the bubbles. |
