| 摘要 |
PROBLEM TO BE SOLVED: To provide a piezoelectric ink jet printer having a simple structure, a low manufacturing cost, a high resolution, excellent durability and moisture resistance and being driven with a low voltage without causing any deterioration of insulation. SOLUTION: A piezoelectric ceramics layer 40 having an inner positive electrode layer 44 and a piezoelectric ceramics layer 40 having an inner negative electrode layer 42 are laid alternately, and a piezoelectric ceramics layer 40 having no inner electrode layer is laid on the uppermost layer to form a piezoelectric actuator where the inner electrode layer is not exposed. One of the inner positive electrode layer or the inner negative electrode layer is divided to face an ink channel in one and one correspondence and the other is formed over the all ink channels. The inner positive electrode layer and the inner negative electrode layer are continuously provided with electrode take-out parts at different positions and an external electrode is provided at a position where the electrode take-out part is exposed from the piezoelectric actuator.
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