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. 21, 2009
Filed:
Oct. 18, 2006
Aditya Jayant Angal, Lexington, KY (US);
James Lesesne Bush, Iii, Lexington, KY (US);
William Everett Gardner, Louisville, KY (US);
Aditya Jayant Angal, Lexington, KY (US);
James Lesesne Bush, III, Lexington, KY (US);
William Everett Gardner, Louisville, KY (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
A method for generating a tonal response curve for a scanner includes (a) directing light from the scanner to a calibration target having a single uniform neutral tone; (b) measuring with the scanner an amount of incident light reflected from the calibration target to obtain a simulated optical density value associated with the calibration target and the amount of incident light; (c) changing the amount of the incident light; (d) repeating acts (b) and (c) until a predetermined number of simulated optical density values are accumulated; and (e) generating the tonal response curve for the scanner by matching each of the simulated optical density values with one of a plurality of reference optical densities.