Hue Error & Grayness

Posted: October 3, 2012 in Color

Hue Error & Grayness

To monitor the quality of your inks and to check for contamination, characteristics called hue error and grayness may be read from the solid process ink patches. Hue error is a measure of the deviation of the ink from a theoretically perfect process color. The larger the error, the smaller the gamut of colors that can problem, merely a characteristic of the ink. The term ‘‘error’’ is really a misnomer since it does not indicate a problem, merely a characteristic of the ink.

The grayness reading shows how ‘‘dirty’’ the ink is. For these measurements, a three-filter reading of the solid ink patches is taken and, again, the densitometer can calculate the results.

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