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:
Jul. 02, 2019
Filed:
Mar. 29, 2018
Applicant:
Hewlett-packard Development Company, L.p., Houston, TX (US);
Inventors:
Adam L. Ghozeil, Corvallis, OR (US);
Scott A. Linn, Corvallis, OR (US);
David Maxfield, Corvallis, OR (US);
Andrew Van Brocklin, Corvallis, OR (US);
Assignee:
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/175 (2006.01); B41J 2/14 (2006.01);
U.S. Cl.
CPC ...
B41J 2/17566 (2013.01); B41J 2/1404 (2013.01); B41J 2002/14354 (2013.01); B41J 2002/17579 (2013.01);
Abstract
In an implementation, a printhead includes a nozzle and a fluid channel. A sensor plate is located within the fluid channel. An impedance measurement circuit is coupled to the sensor plate to measure impedance of fluid within the channel during a fluid movement event that moves fluid past the sensor plate.