Radial back-curling thermoelastic ink jet printing mechanism
AssigneeSilverbrook Research Pty Ltd
InventorKia Silverbrook
Life of this patent
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Abstract
A nozzle arrangement for an ink jet printhead includes a wafer substrate having a nozzle chamber defined therein. The nozzle arrangement has a nozzle chamber wall that defines an ink ejection port and a rim about the ink ejection port. A series of radially positioned actuators are attached to the nozzle rim and extend radially from the rim to form a portion of the nozzle chamber wall adjacent the rim. Each actuator is configured so that a radially outer edge of each actuator is displaceable into the chamber, upon actuation of the actuator and so that, upon such displacement, a pressure within the nozzle chamber is increased, resulting in the ejection of ink from the ejection port.
Claims8
A nozzle arrangement for an ink jet printhead, the nozzle arrangement comprising
- a wafer substrate having a nozzle chamber defined therein;
- a nozzle chamber wall that defines an ink ejection port and a rim about the ink ejection port;
- and
- a series of radially positioned actuators attached to the nozzle rim and extending radially from the rim to form a portion of the nozzle chamber wall adjacent the rim, each actuator being configured so that a radially outer edge of each actuator is displaceable into the chamber, upon actuation of the actuator and so that, upon such displacement, a pressure within the nozzle chamber is increased, resulting in the ejection of ink from the ejection port.
Dependencies are inferred from the claim text.