Monolithic ink-jet printhead having a heater disposed...

Incremental printing of symbolic information – Ink jet – Ejector mechanism

Reexamination Certificate

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Details

C347S047000, C347S065000

Reexamination Certificate

active

07018017

ABSTRACT:
A monolithic ink-jet printhead includes a substrate having a lower ink chamber formed on an upper surface thereof, a manifold for supplying ink to the lower ink chamber formed on a bottom surface thereof, and an ink channel providing communication therebetween; a nozzle plate having a plurality of passivation layers and a metal layer sequentially stacked on the substrate, the nozzle plate having an upper ink chamber formed therein on a bottom surface of the metal layer, a nozzle in communication with the upper ink chamber formed on an upper surface of the metal layer, and a connection hole providing communication between the upper ink chamber and the lower ink chamber; a heater located between the upper ink chamber and the lower ink chamber for heating ink contained in the lower and upper ink chambers; and a conductor electrically connected to the heater to apply a current to the heater.

REFERENCES:
patent: 4882595 (1989-11-01), Trueba et al.
patent: 4894664 (1990-01-01), Tsung Pan
patent: 6000787 (1999-12-01), Weber et al.
patent: 6019457 (2000-02-01), Silverbrook
patent: 6120135 (2000-09-01), Murthy et al.
patent: 6595627 (2003-07-01), Min et al.
patent: 6652077 (2003-11-01), Maeng et al.
patent: 2002/0008738 (2002-01-01), Lee et al.
patent: 2002/0167553 (2002-11-01), Nikkel

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