PRINT HEAD AND MANUFACTURE THEREOF

摘要

PROBLEM TO BE SOLVED: To eject an ink drop stably outward. SOLUTION: A lower electrode is formed of a conductive material on one surface of a piezoelectric element 55 on the side of a diaphragm 54 and an upper electrode 56 is formed of a conductive material on the opposite surface of the piezoelectric element 55 while partially facing a part no recess is made in one surface of a channel plate. According to the structure, oscillation characteristics of the piezoelectric element 55 can be substantially prevented from fluctuating in a region facing the pressure chamber of the channel plate even if the upper electrode 56 is connected with a wire 62 and an ink drop can be ejected stably outward.