Ink jet printhead with conformally coated heater
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United States of America Patent
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-
Sep 4, 2007
Grant Date -
Jan 19, 2006
app pub date -
Nov 17, 2003
filing date -
Nov 23, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
There is disclosed an ink jet printhead which includes a plurality of nozzles and one or more heater elements corresponding to each nozzle. 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 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. Each heater element is substantially covered by a conformal protective coating which has been applied to all sides of the heater element simultaneously so that the coating is seamless.
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Cited Art Landscape
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