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:
Nov. 12, 2013
Filed:
Feb. 12, 2008
Volker Smektala, Camas, WA (US);
Volker Smektala, Camas, WA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A method of detecting low ink levels in an integrated print head includes calibrating the integrated print head and producing a baseline temperature rise, performing an end-of-life test to produce a second temperature rise; and comparing the second temperature rise and the baseline temperature rise to estimate ink levels within the integrated print head. A computer product for detection of end-of-life events in integrated inkjet print heads includes computer code to perform a calibration procedure when an integrated print head is first connected to a printer; computer code to perform an end-of-life test on the integrated print head after a triggering event; and computer code to compare end of life test results with a baseline result from the calibration procedure.