Ink supply system for ink jet printers
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United States of America Patent
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Jan 6, 2015
Issued Date -
N/A
app pub date -
Feb 26, 2013
filing date -
Feb 26, 2013
priority date (Note) -
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Abstract
An ink supply system for ink jet printers includes a recirculation tank coupled to a recirculation pump configured to provide a substantially pulseless flow of ink. A heating assembly having an ink conduit formed into a spiral in thermal contact with at least one heating element receives ink from the pump and outlets to a sensor assembly with temperature and pressure sensors that measure ink parameters both as the ink enters a printhead and is returned from the printhead. The returned ink is then ported to a recirculation tank from which the pump draws the recirculating ink. An air pump is coupled to the recirculation tank in order to maintain a substantial vacuum within the tank.
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