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:
Dec. 30, 2014
Filed:
Jun. 14, 2011
Zvi Shemer, Nes Ziona, IL;
Ziv Gilan, Kfar-Harif, IL;
Niv Shemtov, Rishon Letzion, IL;
Shlomo Harush, Nes-Ziona, IL;
Natty Levy, Raanana, IL;
Amit Porat, Rehovot, IL;
Zvi Shemer, Nes Ziona, IL;
Ziv Gilan, Kfar-Harif, IL;
Niv Shemtov, Rishon Letzion, IL;
Shlomo Harush, Nes-Ziona, IL;
Natty Levy, Raanana, IL;
Amit Porat, Rehovot, IL;
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A method of calibrating an optical density sensor comprising calculating a first pigment solid density value of an ink solution using a current first electrical output signal value from a photodetector, a current second electrical output signal value from a photodetector, and a current lens gap value, calculating a second pigment solid density value of the ink solution using a previously measured first electrical output signal value, a previously measured second electrical output signal value, and a previously measured lens gap value, comparing the current first electrical output signal value, the current second electrical output signal value, and the current lens gap value with the previously measured first electrical output signal value, the previously measure second electrical output signal value, and the previously measured lens gap value, and comparing the first pigment solid density value with the second pigment solid density value.