| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid ejection apparatus that includes a piezoelectric element with an improved withstand voltage in a case that an upper electrode is made as a common electrode.SOLUTION: A liquid ejection apparatus includes: pressure generating chambers; piezoelectric elements each having a piezoelectric layer, a first electrode being an individual electrode provided on the pressure generating chamber side of the piezoelectric layer, and a second electrode being a common electrode provided on the side opposite to the first electrodes of the piezoelectric layer; and a driving means that supplies a drive waveform for driving the piezoelectric element to the piezoelectric element. The drive waveform supplied to the first electrode has a waveform for raising or lowering a voltage with reference to an intermediate voltage. The second electrode is applied with a reference voltage higher than the intermediate voltage. |
