Piezoelectric inkjet printhead

Details Piezoelectric inkjet printhead Piezoelectric inkjet printhead

2007-05-31

2010-11-16

Feggins, K. (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

07832846

ABSTRACT:
A piezoelectric inkjet printhead that includes a flow channel plate; an ink flow channel that is formed in the flow channel plate and includes an ink inlet through which ink enters, a plurality of pressure chambers to which ink to be ejected is filled, a manifold which is a path for supplying ink from the ink inlet to the pressure chambers, a plurality of restrictors that connect the manifold to the pressure chambers, and a plurality of nozzles to eject ink from the pressure chambers to the outside; and a plurality of piezoelectric actuators formed on the flow channel plate to provide a driving power to each of the pressure chambers to eject ink to the outside, wherein the manifold includes a plurality of individual manifolds defined by a plurality of first barrier ribs, which respectively correspond to the pressure chambers. In the process of ejecting ink to the outside, ink that flows back from the pressure chambers towards the individual manifolds through the restrictors does not influence adjacent pressure chambers, thus preventing cross-talk.

REFERENCES:
patent: 2005/0083379 (2005-04-01), Chikamoto
patent: 2003-50477 (2003-06-01), None

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