Inkjet printhead with bubble trap

Details Inkjet printhead with bubble trap Inkjet printhead with bubble trap

2008-07-22

2008-07-22

Vo, Anh T. N. (Department: 2861)

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

Reexamination Certificate

active

11246700

ABSTRACT:
An inkjet printhead with an array of nozzles, and corresponding actuators for ejecting ink through the nozzles; a plurality of ink inlet apertures in fluid communication with the nozzles, each of the ink inlet apertures having an ink permeable trap and a vent sized so that the surface tension of an ink meniscus across the vent prevents ink leakage; wherein during use, the ink permeable trap directs gas bubbles to the vent where they vent to atmosphere.By trapping the bubbles at the ink inlets and directing them to a small vent, they are effectively removed from the ink flow without any ink leakage. The trap can also double as an inlet priming feature to assist priming the chambers with ink.

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