Ink jet nozzle having an actuator mechanism located about an ejection port
AssigneeSilverbrook Research Pty Ltd
InventorsKia Silverbrook, Gregory John McAvoy
Life of this patent
Estimating the term…
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.
Claims9
An ink jet nozzle arrangement comprising:
- a nozzle chamber including a first wall in which an ink ejection port is defined;
- and
- an electrothermal bend actuator for effecting ejection of ink from the chamber through the ink ejection port on demand, the actuator being formed in the first wall of the nozzle chamber;
- said actuator extending substantially from adjacent said ink ejection port to other walls defining the nozzle chamber.
Dependencies are inferred from the claim text.