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:
Oct. 22, 2019
Filed:
Sep. 08, 2018
Applicant:
Hewlett-packard Development Company, L.p., Houston, TX (US);
Inventors:
Alexander Govyadinov, Corvallis, OR (US);
Adam L. Ghozeil, Corvallis, OR (US);
Boon Bing Ng, Singapore, SG;
Patrick Leonard, Leixlip, IE;
Raymond Connolly, Leixlip, IE;
Assignee:
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P., Spring, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/175 (2006.01); B41J 2/045 (2006.01); B41J 2/14 (2006.01); B41J 2/18 (2006.01);
U.S. Cl.
CPC ...
B41J 2/17566 (2013.01); B41J 2/0458 (2013.01); B41J 2/04541 (2013.01); B41J 2/1404 (2013.01); B41J 2/14072 (2013.01); B41J 2/14153 (2013.01); B41J 2/175 (2013.01); B41J 2/18 (2013.01); B41J 2002/14467 (2013.01); B41J 2202/11 (2013.01); B41J 2202/12 (2013.01);
Abstract
A print head has a fluid slot and a sensing chamber having a first port connected to the fluid slot and a second port. The sensing chamber contains an ink level sensor. A circulation passage extends from the fluid slot and is fluidly coupled to the second port. A fluid pump circulates fluid through the circulation passage.