Printhead chip that incorporates micro-mechanical lever mechanisms
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United States of America Patent
Stats
-
Nov 7, 2006
Grant Date -
May 26, 2005
app pub date -
Jan 3, 2005
filing date -
Jul 15, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A printhead chip includes a substrate that incorporates drive circuitry and defines a plurality of ink inlet channels. Nozzle chamber structures are positioned on the substrate and define nozzle chambers in fluid communication with respective ink inlet channels and ink ejection ports in fluid communication with respective nozzle chambers. Elongate micro-electromechanical actuators are fast with the substrate at first ends to be connected to the drive circuitry so that second ends are displaceable reciprocally with respect to the substrate on receipt of electrical signals from the drive circuitry. Ink ejection members are positioned in respective nozzle chambers and are displaceable with respect to the substrate to eject ink from associated ink ejection ports. Micro-mechanical lever mechanisms are interposed between respective actuators and ink displacement members so that displacement of the actuators is transmitted to the ink displacement members.
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