CPC H04N 1/6027 (2013.01) [A63F 3/0655 (2013.01); H04N 1/506 (2013.01); H04N 1/6008 (2013.01); H04N 1/6088 (2013.01); A63F 3/0665 (2013.01)] | 20 Claims |
9. A method of producing a redundantly printed security-enhanced document comprising a substrate with process color variable indicia representing variable information printed on the substrate, the process color variable indicia comprising a plurality of component colors, the method comprising:
determining a variable indicia illuminating light color temperature;
determining, utilizing an additive color model, a grayscale equivalent level of each component color of the process color variable indicia with each Red, Green, and Blue (RGB) channels;
determining each of the component colors of the process color variable indicia to ensure that the component colors exhibit a level greater than or equal to a predetermined Signal-to-Noise-ratio threshold relative to a background of the substrate surrounding the variable indicia when viewed in any of red, green, or blue channels of an additive color model as calculated by a Modified Weber's Fraction equation in at least one channel of the additive color model, such that a failure of the printing any one of the component colors of the process color variable indicia does not alter a meaning of the variable information represented by the other component color of the variable indicia;
sending instructions intended to cause print heads to print the component colors to form the process color variable indicia on the substrate with separate print heads; and
applying a scratch-off coating covering at least a portion of the process color variable indicia.
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