Stacked heater elements in a thermal ink jet printhead

Details Stacked heater elements in a thermal ink jet printhead Stacked heater elements in a thermal ink jet printhead

2007-09-04

2007-09-04

Stephens, Juanita D. (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S062000, C347S048000

Reexamination Certificate

active

10534829

ABSTRACT:
There is disclosed an ink jet printhead which comprises a plurality of nozzles (3) and one or more heater elements (10) corresponding to each nozzle (3). Each heater element is configured to heat a bubble forming liquid in the printhead to a temperature above its boiling point to form a gas bubble (12) therein. The generation of the bubble causes the ejection of a drop of an ejectable liquid (such as ink) through the respective corresponding nozzle, to effect printing. The printhead has a plurality of nozzle chambers (7) each corresponding to a respective nozzle, with a plurality of the heater elements being disposed within each chamber. The heater elements within each chamber are formed on different respective layers to one another.

REFERENCES:
patent: 4965594 (1990-10-01), Komuro
patent: 5706041 (1998-01-01), Kubby
patent: 5969005 (1999-10-01), Yamashita et al.
patent: 6019457 (2000-02-01), Silverbrook
patent: 6543879 (2003-04-01), Feinn et al.
patent: 6557977 (2003-05-01), Silverbrook
patent: 1170128 (2002-01-01), None
patent: 1024007 (2002-10-01), None
patent: WO-00/23279 (2000-04-01), None
The Fabrication and Reliability Testing of Ti/TiN Heaters, P. DeMoor, Proceeding of SPIE, Micromachining and Microfabrication Process Technology V, vol. 3874, pp. 284-293.

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