Thermal ink-jet printhead with a suspended heating element in each ejector
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United States of America Patent
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Dec 22, 1998
Issued Date -
N/A
app pub date -
Sep 15, 1997
filing date -
Mar 4, 1996
priority date (Note) -
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Abstract
In a thermal ink-jet printhead, a set of heating elements are formed in the main surface of a semiconductor chip. Channels are formed by etching within the semiconductor chip underneath each of the heating elements, thereby exposing two main sides of each heating element within each ejector. Because two main surfaces of the heating element are accessible to liquid ink in each ejector, efficiency and thermal characteristics of the printhead are improved.
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