Patent ID: 6592208
Filing Date: 2003-07-15
Classification: B41J

Abstract:
An electrostatic ink jet head that includes a plurality of electrostatic actuators, each of said plurality of electrostatic actuators comprising:a nozzle; an ink liquid chamber that communicates with the nozzle; a diaphragm; and an electrode that faces the diaphragm, with a predetermined space being maintained between the electrode and the diaphragm, wherein a voltage is applied between the electrode and the diaphragm so as to deform the diaphragm due to static electricity, ink droplets are discharged by a mechanical recovering force of the deformed diaphragm, the electrode and the diaphragm form a non-parallel gap, and when the voltage is applied, a period of time during which the diaphragm is in contact with the electrode is 20% or less of a period of time required for forming one pixel.