Method for gray balance correction of a printing process
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United States of America Patent
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Sep 17, 2013
Grant Date -
Sep 29, 2011
app pub date -
Mar 24, 2011
filing date -
Mar 24, 2010
priority date (Note) -
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Abstract
In printing processes, even when a process calibration under predefined printing conditions is used, it is possible for deviations in the gray balance to occur. Attempts have been made to correct the deviations, for example by changing the layer thickness of the printing inks in the printing process, but that can lead to color deviations in other regions. A gray balance correction method with which wastage that regularly occurs can be reduced and an occurrence of undesired color fluctuations can be avoided, is achieved by using differences between black and chromatic gray areas in gray balance areas to replace the measured values from a first process calibration with corrected measured values and carrying out a new process calibration.
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