Nozzle arrangement with thermally operated ink ejection piston

Details Nozzle arrangement with thermally operated ink ejection piston Nozzle arrangement with thermally operated ink ejection piston

2007-04-02

2008-12-16

Stephens, Juanita D (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S056000

Reexamination Certificate

active

07465026

ABSTRACT:
A nozzle arrangement is, provided for an inkjet printhead. The nozzle arrangement includes a wafer substrate assembly defining an ink inlet channel. A nozzle chamber structure is mounted to the wafer substrate assembly and defines a nozzle chamber in fluid communication with the ink inlet channel. The nozzle chamber structure further defines an ink ejection port through which ink in the nozzle chamber can be ejected. An electro-thermal actuator is mounted relative to the wafer substrate assembly and includes an electrically conductive heating element. A piston is coupled relative to the electro-thermal actuator so that, upon actuation of the actuator, the piston moves rectilinearly along the nozzle chamber to eject ink through the ink ejection port.

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