Patent ID: 6213588
Filing Date: 2001-04-10
Classification: B41J,B82Y,G06K,G11C,H04N

Abstract:
An ink jet printhead comprising:a nozzle chamber having an ink ejection port in one wall of said chamber;an ink supply source interconnected to said nozzle chamber;an electrostatic actuator comprising a first planar electrode formed within a bottom substrate of the nozzle chamber and a moveable second planar electrode arranged above the first planar electrode and having a corrugated border portion, said second planar electrode being moveable to a pre-firing position adjacent to said first planar electrode, upon forming a potential difference across said electrodes, thereby causing said corrugated border portion of said second electrode to concertina, such that, upon reduction of said potential difference, said corrugated border portion returns to is quiescent position, thereby causing the ejection of ink from said nozzle chamber.