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:
Jun. 18, 2013
Filed:
Sep. 27, 2010
Applicants:
Daniel Clark Park, West Linn, OR (US);
Michael E. Jones, West Linn, OR (US);
Inventors:
Daniel Clark Park, West Linn, OR (US);
Michael E. Jones, West Linn, OR (US);
Assignee:
Xerox Corporation, Norwalk, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/175 (2006.01); F04C 29/02 (2006.01); F04B 39/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A bidirectional sealless ink pumping system used in an inkjet printing device includes a liquid ink reservoir and a pump. The pump moves ink from the reservoir through a pumping chamber to supply ink to printheads in the printer, and moves ink from a recirculation receptacle through the pumping chamber to the reservoir. A portion of the ink in the pumping chamber is drawn out of the pumping chamber to lubricate the moving member and is filtered before returning to the pumping chamber.