MANUFACTURING METHOD OF INKJET HEAD, AND INKJET HEAD

摘要

PROBLEM TO BE SOLVED: To reduce useless parts costs and manufacturing costs. SOLUTION: There are set a passage unit fabrication process of fabricating a passage unit including an ink passage which leads to nozzles, an actuator unit fabrication process of fabricating an actuator unit including a piezoelectric sheet which changes a volume of a pressure chamber, and a joint body fabrication process of fabricating a joint body by jointing the passage unit and the actuator unit to each other. There are also set a measurement process of measuring frequency characteristics of impedance for every activity part of the piezoelectric sheet included in the joint body, and a judgment process of judging whether or not an inkjet head is a good one on the basis of a deviation of a difference Fa-Fr between an antiresonance frequency Fa where the impedance becomes maximum and a resonance frequency Fr where the impedance becomes minimum. COPYRIGHT: (C)2005,JPO&NCIPI