Ink-jet printhead with improved ink ejection linearity and...

Incremental printing of symbolic information – Ink jet – Ejector mechanism

Reexamination Certificate

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C347S065000

Reexamination Certificate

active

10864390

ABSTRACT:
An ink-jet printhead includes a substrate having an ink chamber and a manifold, a nozzle plate formed on the substrate, first and second heaters, first and second conductors, and first and second ink channels. The nozzle plate includes a plurality of passivation layers formed of an insulating material, a heat dissipation layer formed on the passivation layers and made of a thermally conductive material, and a nozzle passing through the nozzle plate and in flow communication with the ink chamber. The first and second heaters and conductors are interposed between adjacent passivation layers of the nozzle plate. The ink channels are interposed between the ink chamber and the manifold, for providing flow communication between the ink chamber and the manifold. The first and second heaters, conductors and ink channels are symmetric with respect to the nozzle.

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patent: 1 215 048 (2002-06-01), None
patent: 1 215 048 (2002-06-01), None
patent: 60-204374 (1985-10-01), None

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