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:
Oct. 22, 2002
Filed:
Nov. 05, 1998
Heidelberger Druckmaschinen AG, Heidelberg, DE;
Abstract
To obtain colorimetric values intended for regulating inking on a printing press ( ) from a printed image ( ) produced by the printing press ( ), the printed image is measured calorimetrically in a plurality of pixels ( ) with respect to a selected color coordinate system. The color vectors thus obtained for each pixel ( ) are used to calculate color difference vectors to predetermined reference color vectors based on the same color coordinate system or reference color vectors determined from a reference printed sheet ( ). The color difference vectors are multiplied by a weighting factor determined from the ink coverage of the pixels ( ) and/or the color differences between the pixels ( ) and their neighboring pixels ( ). The color difference vectors weighted in this way can then be used as colorimetric values for regulating the inking on the printing press ( ).