Inkjet printhead having ink flow preventing actuators

Details Inkjet printhead having ink flow preventing actuators Inkjet printhead having ink flow preventing actuators

2007-02-27

2007-02-27

Do, An H. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S065000

Reexamination Certificate

active

11478598

ABSTRACT:
An inkjet printhead is provided having an ink supply channel, a plurality of actuators each having a conductive heater, a paddle, and an arm interconnecting the heater and paddle, and a plurality of ink ejection chambers each having a first wall in which a first aperture for ink ejection is defined, a second wall in which a second aperture is defined through which the arm of an associated actuator passes so that the heater is outside the chamber and the paddle is inside the chamber, and a third wall in which a third aperture is defined through which ink from the ink supply channel is communicated. The arm of each actuator incorporates a protruding shield configured to restrict the flow of ink through the associated second aperture.

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