Controlled layer of tantalum for thermal ink jet printer

Details Controlled layer of tantalum for thermal ink jet printer Controlled layer of tantalum for thermal ink jet printer

1998-11-06

2000-11-07

Barlow, John

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 64, B41J 205

Patent

active

061426121

ABSTRACT:
A thermal ink jet printhead has a protective layer of Ta with an optimum thickness of about 9,000 A deposited on a protective layer of SiC under deposition conditions determined by a regression equation. The protective layer of SiC has an optimum thickness of about 5,000 A. The life of a thermal ink jet printhead having these two optimum thicknesses is at least twenty times the life of a thermal ink jet printhead not having these two optimum thicknesses in at least one embodiment. Etching of the layer of SiC prior to depositing the layer of Ta further increases the life of a thermal ink jet printhead.

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patent: 5420618 (1995-05-01), Sekiya et al.
patent: 5892526 (1999-04-01), Asai

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