Liquid jet head, method for producing liquid jet head, and liquid jet apparatus

摘要

A liquid jet head includes an actuator substrate on which a plurality of grooves is arranged, and a nozzle plate having nozzle holes communicated with the grooves. Drive electrodes extend in the longitudinal direction along both side surfaces of a wall portion of the grooves. An insulating film is disposed between the wall portion and the longitudinal end portions of the drive electrodes so that only the mid-portion of the drive elecrodes directly contacts the side surfaces of the wall portion. When a voltage is applied to the drive electrodes, only the region of the wall portion in the vicinity of the nozzle holes is actuated to eject liquid from the nozzle holes.

主权项

1. A liquid jet head comprising:
an actuator substrate having a plurality of grooves that are divided by a wall portion made of a piezoelectric body and that penetrate a first main surface and a second main surface of the actuator substrate; and a nozzle plate which is installed on the actuator substrate so as to cover an opening on the first main surface of the grooves, and which includes nozzle holes communicated with the grooves at their longitudinal middle portion; wherein a drive electrode extending from a first longitudinal end to a second longitudinal end in the longitudinal direction and an insulating film covering a part of a side surface of the wall portion are provided on the side surface of the wall portion, and wherein the insulating film is provided between the drive electrode and the wall portion at least at the first longitudinal end.