PURPOSE: To obtain a means capable of bonding an actuator part with a flow path plate without using an adhesive in an on-demand type ink jet head produced by bonding the actuator part made of a piezoelectric element and the flow path plate made of a thermoplastic resin.
CONSTITUTION: A production of an on-demand type ink jet head in which on the surface of piezoelectric element 1 serving as a bonding surface, a solvent solution of a thermoplastic resin made of the same material as a flow path plate 4 is sprayed and dried to form a resin film 5A, or a film of a thermoplastic resin made of the same material as the flow path plate 4 is laminated; the flow path plate 4 is positioned through the resin film 5A or said film; and the film is heated and fused by an ultrasonic vibrator.
NARUSE OSAMU
AMEYAMA MINORU
ICHIKAWA KENICHI
HIRAKAWA TOSHIKAZU
ISHII YUICHIRO