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. 13, 2011
Filed:
Jul. 10, 2008
Kenneth Russell Ossman, Macedon, NY (US);
R. Enrique Viturro, Rochester, NY (US);
Kenneth Russell Ossman, Macedon, NY (US);
R. Enrique Viturro, Rochester, NY (US);
Xerox Corporation, Norwalk, CT (US);
Abstract
Methods and systems are provided to increase or optimize the illumination used with a sensor to measure printed ink colors on a substrate at high speed (up to 3 m/s) and high resolution. By modifying the number of light sources, their wavelengths and/or their relative intensities, the optical contrast can be increased or optimized to yield a higher signal-to-noise ratio and improved accuracy for the measurement of multiple colors. In one implementation, multiple LEDs with selected output peak wavelength may be used to achieve higher contrast imaging for each color.