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US 8,804,197 B2Granted
Print quality control method
OwnerTak kin Andrew Yaninventor
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Abstract
A print quality control method, including the steps of: providing a visual referring target on the printing substrate, setting a specific halftone of black “K”; creating a neutral grey tone i.e. NGT; placing tightly both MGT and NGT next to each other across the printing surface; and comparing both printed tones result. By adopting the grey balance theory and visual matching technique, the resultant can provide accurate ink balance information for the production personnel to immediate execute the correction on the imbalance inking condition during production.
Claims16
A print quality control method, comprising the steps of:
- providing a visual referring target on a printing substrate for color balance adjustment;
- setting a specific halftone of black “K” as a referring monochrome grey tone (MGT);
- creating a neutral grey tone (NGT), by accurately overprinting a cyan “C”, a magenta “M”, and a yellow “Y” color according to a pre-determined halftone value percentage;
- placing tightly both MGT and NGT next to each other across a printing surface;
- and
- comparing both printed tones result to control the grey tones color balance;
- wherein:
- the referring monochrome grey tone “K”, MGT is replaced by 100% single color and 50% halftone in a form of CMYK grouping, thereby providing additional printing condition information to an operator.
5 more elements
Dependencies are inferred from the claim text.