Inkjet printhead having enclosed inkjet actuators
AssigneeSilverbrook Research Pty Ltd
InventorKia Silverbrook
Life of this patent
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Abstract
An inkjet printhead is provided having a plurality of ink ejection nozzles. Each nozzle has a substrate incorporating circuitry for supplying an electrical current and a channel for supplying ink, a chamber on the substrate in fluid communication with the channel, an aperture in fluid communication with the chamber, a micro-electromechanical actuator on the substrate electrically connected to the circuitry to be displaced on receipt of the electrical current thereby ejecting ink from the aperture, and an enclosure on the substrate enclosing the micro-electromechanical actuator.
Claims9
An inkjet printhead comprising a plurality of ink ejection nozzles, each nozzle comprising:
- a substrate incorporating circuitry for supplying an electrical current and a channel for supplying ink;
- a chamber on the substrate in fluid communication with the channel;
- an aperture in fluid communication with the chamber;
- a micro-electromechanical actuator on the substrate electrically comprising conductive, thermally expandable material connected to the circuitry so as to be heated on receipt of the electrical current thereby causing displacement of the actuator and ejection of ink from the aperture;
- and
- an enclosure on the substrate enclosing the micro-electromechanical actuator.
Dependencies are inferred from the claim text.