INK-JET TYPE RECORDING HEAD, AND MANUFACTURE OF PIEZOELECTRIC VIBRATOR UNIT USED IN THE SAME

摘要

PROBLEM TO BE SOLVED: To prevent a shortcircuit or an electric conduction of internal electrodes because of a brake of an edge part, etc. SOLUTION: A distance L2 between a leading end 2a' of an internal electrode 2', 2' positioned at the outer side among internal electrodes 2, 2' buried in a piezoelectric material 4 spaced by a constant distance L2 from a leading end of a piezoelectric vibrator 5 at the side of a passage unit, and a leading end face of the piezoelectric vibrator 5 is set larger than a distance between a leading end of the other internal electrode 2, 2... of the same polarity and the leading end face of the piezoelectric vibrator. A long distance is secured between the internal electrode 2' at an edge part which is easy to brake and an external electrode 9 connected to an internal electrode 3 of the other polarity, thereby preventing an electric conduction.