Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2011-05-10
2011-05-10
Do, An H (Department: 2853)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S054000
Reexamination Certificate
active
07938507
ABSTRACT:
A nozzle arrangement for an inkjet printhead includes a substrate with a layer of drive circuitry, the substrate defining an ink chamber with an ink supply channel etched through the substrate; and a roof structure having a roof layer over the chamber. The roof structure includes a nozzle rim positioned around an ejection port defined in the roof layer above the chamber; a plurality of actuators radially spaced about, and displaceable with respect to, the nozzle rim, each actuator having an internal copper core for receiving therethrough a current, each actuator configured to thermally expand into the chamber upon receiving the current; and a series of struts interspersed between the actuators to support the nozzle rim with respect to the roof layer.
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McAvoy Gregory John
Silverbrook Kia
Do An H
Silverbrook Research Pty Ltd
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