Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Fenlong Lin0
John Randel LaCaze0
Jon Campbell0
Date of Patent
January 6, 2015
Patent Application Number
13777845
Date Filed
February 26, 2013
Patent Citations Received
Patent Primary Examiner
Patent 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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