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. 23, 2021
Filed:
Apr. 24, 2017
Applicant:
Hewlett-packard Development Company, L.p., Spring, TX (US);
Inventors:
Daryl E Anderson, Corvallis, OR (US);
James Gardner, Corvallis, OR (US);
Berkeley Fisher, Corvallis, OR (US);
Assignee:
Hewlett-Packard Development Company, L.P., Spring, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/165 (2006.01); G01L 1/16 (2006.01); B41J 2/045 (2006.01);
U.S. Cl.
CPC ...
G01L 1/16 (2013.01); B41J 2/0451 (2013.01); B41J 2/04555 (2013.01); B41J 2/04586 (2013.01); B41J 2/16517 (2013.01); B41J 2/16579 (2013.01);
Abstract
A fluid ejection die includes a plurality of nozzles to eject fluid drops and a plurality of strain gauge sensors to sense strain. Each strain gauge sensor corresponds to a nozzle and passes the sensed strain to a controller to determine the health of the nozzle based on the sensed strain.