| 摘要 |
An inkjet print head includes a piezoelectric actuator configured of stacked piezoelectric sheets with individual electrodes formed on the piezoelectric sheets. Positioning marks formed of the same material as the individual electrodes are formed one in each of the four corners of the piezoelectric sheets. A beam of light is radiated on the positioning marks in the stacked direction of the piezoelectric sheets, forming shadows of the positioning marks in each corner. The shadows are detected, and the center of gravity is determined for each shadow. Diagonal lines are drawn between the centers of gravity in opposing corners. The intersecting point of the diagonal lines serves as a reference point for bonding the piezoelectric actuator to the stacked cavity unit.
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