Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2008-12-16
2011-12-20
Feggins, Kristal (Department: 2861)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
Reexamination Certificate
active
08079676
ABSTRACT:
Features described herein relate to ejecting drops from a thin layer of fluid. Piezoelectric elements can generate a uniform high acoustic field, which is transferred through a segmented metal support structure and an acoustic horn. The sound waves generate capillary waves on a thin layer of fluid on a top surface of the acoustic horn. At sufficiently high amplitudes, the capillary waves begin to break apart, resulting in the ejection of drops from the thin layer of fluid.
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Fay Sharpe LLP
Feggins Kristal
Palo Alto Research Center Incorporated
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