The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 2015
Filed:
Feb. 26, 2013
Inx International Ink Company, Owens Cross Roads, AL (US);
John Randel LaCaze, Hampton Cove, AL (US);
Jon Campbell, Huntsville, AL (US);
Fenlong Lin, Madison, AL (US);
INX International Ink Company, Owens Cross Roads, AL (US);
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.