Patent ID: 6454395
Filing Date: 2002-09-24
Classification: B41J

Abstract:
An electrostatic inkjet head comprising:a first, ink-chamber substrate comprising at least one ink chamber containing ink therein; at least one inkjet nozzle connected to the at least one inkjet chamber; and at least one vibration plate defining a part of the at least one ink chamber, the vibration plate being constructed to be elastically deformed so as to eject a droplet of ink from the at least one inkjet nozzle; and a second, electrode substrate comprising at least one individual electrode located opposite to the vibration plate with a predetermined gap therebetween, the individual electrode formed on a single crystal silicon substrate, and comprising a silicon film containing impurity atoms providing one of an n-type and a p-type conductivity to the individual electrode; and a plurality of gap spacers disposed on the single crystal silicon substrate, the gap spacers surrounding the individual electrode, and being made of an insulating film so as to define the gap between the individual electrode and the vibration plate, said gap spacers thereby being configured and adapted to produce a substantially uniform gap.