Method for determining color and/or density values and printing apparatus configured for the method
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United States of America Patent
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Apr 7, 2009
Grant Date -
Apr 12, 2007
app pub date -
Nov 3, 2006
filing date -
May 3, 2004
priority date (Note) -
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Abstract
In a method for determining color and/or density values for use in monitoring and regulating a printing process in a printing apparatus, specifically in a sheet-fed offset printing press, measuring areas of a printed sheet are measured photoelectrically during the printing process, directly in or on the running printing apparatus. From the measured values obtained in the process, the color and/or density values for the relevant measuring areas are formed. From the measurement, measured value deviations caused directly in the printing process with respect to a measurement outside the printing process can be corrected computationally.
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