Printhead chip incorporating double action shutter mechanisms

Details Printhead chip incorporating double action shutter mechanisms Printhead chip incorporating double action shutter mechanisms

2006-02-28

2006-02-28

Stephens, Juanita D. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S020000

Reexamination Certificate

active

07004568

ABSTRACT:
A printhead chip includes a substrate that incorporates a drive circuitry layer and defines a plurality of ink inlet channels. A plurality of nozzle chamber structures is positioned on the substrate. Each nozzle chamber structure defines a nozzle chamber and an ink ejection port in fluid communication with the nozzle chamber. The nozzle chambers are in fluid communication with respective ink inlet channels. A plurality of shutter members is positioned in respective nozzle chambers. Each shutter member is displaceable in a plane substantially parallel to the substrate between a closed position in which the shutter member closes the respective ink inlet channel and an open position in which ink is permitted to flow into the respective nozzle chamber. A plurality of actuating mechanisms is connected to the drive circuitry layer and the respective shutter members to displace the shutter members between the open and closed positions on receipt of a signal from the drive circuitry layer.

REFERENCES:
patent: 5278585 (1994-01-01), Karz et al.
patent: 5612723 (1997-03-01), Shimura et al.
patent: 5821962 (1998-10-01), Kudo et al.
patent: 5872582 (1999-02-01), Pan
patent: 403153359 (1991-07-01), None

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