Barrier structure for thermal ink-jet printheads
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United States of America Patent
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-
Dec 27, 1988
Grant Date -
N/A
app pub date -
Jun 2, 1987
filing date -
Jun 2, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A three-sided barrier structure (22), comprising three walls (24a-c), is provided in conjunction with a resistor (10) used in a thermal ink-jet printhead. Placement of the structure less than about 25 .mu.m from the resistor results in longer resistor life and an improvement in the static bubble purging ability of the printhead.
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