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:
Apr. 24, 2007
Filed:
Apr. 06, 2004
Brian D. Busch, Sudbury, MA (US);
Daniel P. Bybell, Medford, MA (US);
William J. Donovan, Hudson, MA (US);
Felix J. Lin, Chelmsford, MA (US);
Suhail S. Saquib, Shrewsbury, MA (US);
Jay E. Thornton, Watertown, MA (US);
Brian D. Busch, Sudbury, MA (US);
Daniel P. Bybell, Medford, MA (US);
William J. Donovan, Hudson, MA (US);
Felix J. Lin, Chelmsford, MA (US);
Suhail S. Saquib, Shrewsbury, MA (US);
Jay E. Thornton, Watertown, MA (US);
Other;
Abstract
Techniques are disclosed for performing color correction in a color printer. An RGB test image is printed to produce a printed calibration image. Colors in the printed calibration image are measured and compared to expected color values. A color corrector generates a printer lookup table (LUT) based on this comparison. The LUT may be generated based on models of the printer's print engine and previous LUTs. The color corrections are applied to subsequent print jobs to improve the quality of color output. Color measurement and correction may be performed using a closed-loop system contained within the printer that includes a color measurement device (such as a scanner) and a computer.