| 摘要 |
PROBLEM TO BE SOLVED: To provide an ink jet printer comprising an electrode and a conduction part constituted of a pump drive part and a conduction driving part in which a disturbance pressure is eliminated by altering the conducting method of the electrode and an external circuit thereby deleting the conduction driving part, and high speed printing is achieved by shortening the ink ejection pressure period. SOLUTION: In order to conduct an electrical signal between the electrode and the external circuit, the conduction part disposed on the plane of a nozzle plate being boded to the pump drive part is disposed in the ink jet printer while being connected with the electrode by bonding the pump drive part and the nozzle plate on the bonding face thereof.
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