Ink pressure regulator with liquid-retaining structure
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United States of America Patent
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Aug 6, 2013
Grant Date -
Sep 22, 2011
app pub date -
May 30, 2011
filing date -
Oct 16, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
An ink pressure regulator for regulating a hydrostatic pressure of ink supplied to an inkjet printhead. The regulator includes an ink chamber having an ink outlet for fluid communication with the printhead via an ink line. A roof of the ink chamber includes: an air inlet; a regulator channel having a first end communicating with the air inlet and a second end communicating with a headspace of the chamber; and a liquid-retaining structure in fluid communication with the regulator channel. The liquid-retaining structure is positioned and configured for capturing ink from the headspace of the ink chamber. The regulator channel is dimensioned to regulate a hydrostatic pressure of the ink supplied to the printhead.
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