Elimination of nucleation sites in pressure chamber for ink jet systems
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United States of America Patent
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Aug 7, 1990
Issued Date -
N/A
app pub date -
Jun 9, 1989
filing date -
Feb 22, 1988
priority date (Note) -
Expired
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Abstract
In the particular embodiments of the invention described in the specification, the pressure chamber for an ink jet system is coated with a smooth, conforming layer of a coating material, such as a xylylene polymer material, which is wettable by the ink used with the system to eliminate nucleation sites in the surfaces forming the walls of the chamber and thereby inhibit formation of bubbles from dissolved air contained in ink within the chamber when the ink is subjected to reduced pressure during operation of the ink jet system.
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