Inkjet printhead heater elements with thin or non-existent...

Details Inkjet printhead heater elements with thin or non-existent... Inkjet printhead heater elements with thin or non-existent...

2005-04-04

2008-11-11

Luu, Matthew (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S009000, C347S061000

Reexamination Certificate

active

07448729

ABSTRACT:
A thermal inkjet printhead with a heater element disposed in each of the bubble forming chambers wherein, the heater element has a protective surface coating that is less than 0.1 μm thick while still being capable of ejecting more than 1 billion drops without failure. Removing most or all of the protective coatings from the heater reduces or eliminates the thermal insulation between the heater and the ink. Nucleating a bubble in the ink chamber requires a much shorter pulse of less energy thereby improving printhead efficiency.

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“Silicon Carbide”, Nov. 2, 2002, [online] Retrieved from Internet URL: www.accuratus.com/silicar.html, pp. 1-2.

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