Inverted radial back-curling thermoelastic ink jet printing mechanism
AssigneeSilverbrook Research Pty Ltd
InventorsKia Silverbrook, Greg McAvoy
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 connected to the wafer substrate and extend radially inwardly towards the rim. Each actuator is configured so that a radially inner edge of each actuator is displaceable, with respect to the nozzle rim, 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 connected to the wafer substrate and extending radially inwardly towards the rim to form a portion of the nozzle chamber wall, each of said actuators being configured so that a radially inner edge of said each of said actuators is displaceable with respect to the nozzle rim 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.