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:
Mar. 05, 2019
Filed:
Aug. 23, 2017
Applicant:
Hewlett-packard Development Company, L.p., Houston, TX (US);
Inventors:
Daryl E. Anderson, Corvallis, OR (US);
Eric T. Martin, Corvallis, OR (US);
Peter James Fricke, Corvalllis, OR (US);
Assignee:
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P., Spring, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/045 (2006.01); B41J 2/165 (2006.01); B41J 2/175 (2006.01);
U.S. Cl.
CPC ...
B41J 2/0451 (2013.01); B41J 2/0458 (2013.01); B41J 2/04541 (2013.01); B41J 2/04555 (2013.01); B41J 2/04573 (2013.01); B41J 2/04588 (2013.01); B41J 2/04598 (2013.01); B41J 2/165 (2013.01); B41J 2/16579 (2013.01); B41J 2/175 (2013.01);
Abstract
In an example, a print head comprises a nozzle to be activated by a delayed fire pulse that is delayed from an initial fire pulse, a sensor to measure an impedance of the nozzle, and a detector to determine a first time instant following the delayed fire pulse for registering a first impedance measurement by the sensor.