EJECTOR DEVICES, METHODS, DRIVERS, AND CIRCUITS THEREFOR

In a piezoelectric ejector assembly, a piezoelectric actuator is attached to an ejector mechanism, while a drive signal generator and a controller are coupled to the actuator. The drive signal generator is configured to generate a drive signal for driving the actuator to oscillate the ejector assemb...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LYNCH IYAM, WILKERSON JONATHAN RYAN, HUNTER CHARLES ERIC, PARROTT JEFFREY
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ATOMISING APPARATUS CORRECTION OF TYPOGRAPHICAL ERRORS ELECTRICITY i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME LINING MACHINES NOZZLES PERFORMING OPERATIONS PRINTING SELECTIVE PRINTING MECHANISMS SPRAYING APPARATUS SPRAYING OR ATOMISING IN GENERAL STAMPS TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	In a piezoelectric ejector assembly, a piezoelectric actuator is attached to an ejector mechanism, while a drive signal generator and a controller are coupled to the actuator. The drive signal generator is configured to generate a drive signal for driving the actuator to oscillate the ejector assembly. The controller is configured to control the drive signal generator to drive the actuator at a resonant frequency of the ejector assembly, and an auto-tuning circuit is provided to define the optimum drive signal frequency.