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:
Apr. 03, 2018
Filed:
Jun. 30, 2014
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, Corvallis, OR (US);
James Michael Gardner, Corvallis, OR (US);
Assignee:
Hewlett-Packard Development, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/14 (2006.01); B41J 2/045 (2006.01); B41J 2/165 (2006.01);
U.S. Cl.
CPC ...
B41J 2/0451 (2013.01); B41J 2/0458 (2013.01); B41J 2/04541 (2013.01); B41J 2/14153 (2013.01); B41J 2/16579 (2013.01);
Abstract
An example device in accordance with an aspect of the present disclosure includes modules to communicate an input signal to an ink sample to obtain an ink signal, compare the ink signal to a reference value, and identify an indicator of nozzle chamber operation corresponding to the ink signal. A module may be contained on an inkjet printhead die, such that the device may generate the input signal on the inkjet printhead die.