Patent ID: 6299290
Filing Date: 2001-10-09
Classification: B41J

Abstract:
An inkjet printhead apparatus comprising:a plurality of nozzle chambers each having a nozzle aperture defined in one wall thereof for the ejection of ink out of said chamber and a second aperture for the insertion of an actuator mechanism;an ink supply channel interconnected with said nozzle chamber;a paddle moveable by an actuator operable to eject ink from said nozzle chamber, said actuator including:a first portion located externally of said nozzle chamber anda second portion located internally of said nozzle chamber, supporting said paddle;an interconnecting portion interconnecting said first portion and said second portion through said second aperture, said interconnecting portion further including a protruding shield formed adjacent said second aperture and positioned so as to restrict the flow of fluid through said second aperture.