Ink ejection nozzle employing volume varying ink ejecting means

Incremental printing of symbolic information – Ink jet – Ejector mechanism

Reexamination Certificate

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Reexamination Certificate

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08061814

ABSTRACT:
A nozzle arrangement includes a substrate defining an ink supply passage; a first endless wall extending from the substrate and bounding the ink supply passage; an elongate actuator anchored at a fixed end to the substrate and configured to reciprocally bend towards and away from the substrate on receipt of an electrical current; and a cover terminating a free end of the actuator, the cover defining a second endless wall suspended from the cover within the confines of the first endless wall to define an ink chamber with the first endless wall. The reciprocal bending of the actuator varies a volume of the ink chamber and effects ejection of ink from the ink chamber through an ink ejection port defined in the cover. The first and second endless walls define a gap having a width conducive to the formation of a fluidic seal effected via surface tension of the ink.

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patent: 6276782 (2001-08-01), Sharma et al.
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patent: 7654643 (2010-02-01), Silverbrook
patent: 2002/0075347 (2002-06-01), Sharma et al.
patent: 2010/0097430 (2010-04-01), Silverbrook
patent: 2001-096758 (2001-04-01), None
patent: WO 99/03680 (1999-01-01), None

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