MANUFACTURING METHOD OF ELECTROMECHANICAL CONVERSION ELEMENT, ELECTROMECHANICAL CONVERSION ELEMENT, DROPLET DISCHARGE HEAD, DROPLET DISCHARGE DEVICE, AND IMAGE FORMING APPARATUS

摘要

PROBLEM TO BE SOLVED: To enable a reduction in dispersion of polarization characteristics between manufactured electromechanical conversion elements.SOLUTION: In a step of polarization treatment in a manufacturing method of a piezoelectric element 16, both an electrode pad 18 and electrode pad 20 are located in a charge supply area where the charge generated by corona discharge or glow discharge is supplied at the uniform charge amount per unit area, and the charge generated by corona discharge or glow discharge is supplied to the electrode pad 18 and electrode 20 to perform the polarization treatment to a piezoelectric film 162.