| 摘要 |
PROBLEM TO BE SOLVED: To prevent incomplete or erroneous ejection by connecting a printed board with electrodes formed on a substrate through a conductive material disposed on the inside of the end part of the printed board before connection. SOLUTION: A recess 20 is made in an electrode substrate 12 and a second electrode, i.e., an individual electrode 21, facing a diaphragm 18 through a specified gap is formed on the bottom face of the recess 20. Electrode pad 23 of the individual electrode 21 is connected through a conductive material, i.e., an anisotropic conductive film 26, with a printed board 25 comprising a flexible print cable connected with an external circuit in order to apply a driving waveform to the individual electrode 21. The anisotropic conductive film 26 is disposed on the inside of the end part of the printed board 25 before connection. Since the anisotropic conductive film 26 does nottouch a conductive member, e.g. the diaphragm 18, incomplete or erroneous ejection can be prevented.
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