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. 15, 2014
Filed:
Jul. 30, 2010
Miriam Llorens Carrobe, Barcelona, ES;
Cesar Fernandez Espasa, San Diego, CA (US);
Jose Miguel Rodriguez, San Diego, CA (US);
Miriam Llorens Carrobe, Barcelona, ES;
Cesar Fernandez Espasa, San Diego, CA (US);
Jose Miguel Rodriguez, San Diego, CA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A short detection apparatus, system and method detect short circuits in an inkjet printhead using a comparison of measured current consumption and an estimate of current consumption based on print data. The apparatus includes a current sensor to measure current consumed by the printhead to eject a droplet of ink, a current estimator to estimate a current consumption of the printhead due to print data provided to the printhead, and a comparator to compare the measured consumed current to the estimated consumed current. A short circuit in the printhead is indicated when the comparison exceeds a predetermined threshold.