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US 6,309,048 B1Granted
Inkjet printhead having an actuator shroud
AssigneeSilverbrook Research Pty Ltd
InventorKia Silverbrook
Life of this patent
Estimating the term…
Abstract
An inkjet printhead constructed by MEMS processes has a number of nozzle chambers incorporating ink ejection paddles moved within the chambers by external thermal bend actuators. The actuators are covered by protective covering shells formed by deposition and etching simultaneously with the formation of the nozzle chamber walls.
Claims5
An inkjet printhead comprising:
- a plurality of nozzle chambers each having an ink ejection aperture in one wall thereof and an actuator interconnection aperture in a second wall thereof;
- a moveable ink ejection paddle located within the nozzle chamber and moveable under the control of an external thermal actuator through said actuator interconnection aperture for the ejection of ink out of said ink ejection aperture;
- said external actuator being covered by a protective covering shell around the operational portions of said actuator, spaced apart from said actuator.
Dependencies are inferred from the claim text.