Instant ticket redundancy via multi-chromatic indicia with photoreceptor sensitivity to different wavelengths of light
A redundantly printed security-enhanced document, printing method, and system for better ensuring that the meaning of the information imparted by variable indicia printed by redundant printing indicia on a document protected by a removable Scratch-Off Coating (SOC). By printing the variable indicia with multiple colors, redundancy and integrity of the intended indicia is achieved relative to the perception of human eye photoreceptor cones. The redundantly printed document, methods, and systems enhance the overall appearance of the redundantly printed document, and reduce possible consequences resulting from misprinted variable indicia.
1. A method of producing a redundantly printed security-enhanced document comprising a substrate and process color variable indicia representing variable information printed on the substrate, the process color variable indicia comprising a plurality of different component colors, the method comprising:
verifying the plurality of different component colors for the process color variable indicia by:
determining a variable indicia illuminating light color temperature,
determining, using the variable indicia illuminating light color temperature and red, green, and blue channels of an additive color model, an average grayscale equivalent level of each of the plurality of different component colors,
attenuating the determined average grayscale equivalent level of each of the plurality of different component colors with at least one value for at least one of the red, green, or blue channels of the additive color model,
determining which of the plurality of different component colors exhibit an attenuated grayscale equivalent level greater than or equal to a predetermined minimum threshold in at least one of the red, green, or blue channels of the additive color model, and
ensuring that a minimum of two of the plurality of different component colors to be used for the process color variable indicia each exhibit an attenuated grayscale equivalent level greater than or equal to the predetermined minimum threshold in at least one of the red, green, or blue channels of the additive color model, and such that a failure of printing of any one of the component colors for the process color variable indicia does not alter the meaning of the variable information represented by the other selected component color;
sending instructions intended to cause separate print heads to print the selected component colors to form the process color variable indicia on the substrate; and
applying a scratch-off coating covering at least a portion of the process color variable indicia on the substrate.
2. The method of claim 1 , wherein the variable indicia illuminating light color temperature is 3,200° Kelvin (K).
3. The method of claim 2 , which comprises digitally emulating the illuminating light color temperature of 3,200° Kelvin (K) using a standard Adobe Photoshop RGB, 8-bit, profile.
4. The method of claim 1 , which comprises attenuating the average grayscale equivalent level for each component color when viewed through the blue channel by 7% in the additive color model.
5. The method of claim 1 , which comprises attenuating the average grayscale equivalent level for each component color when viewed through the red channel by 3% in the additive color model.
6. The method of claim 1 , further comprising printing the variable indicia in four component colors.
7. The method of claim 6 , wherein the printed four component colors are cyan, magenta, yellow, and black.
8. The method of claim 1 , wherein the information relates to an intended value of the document.
9. The method of claim 1 , wherein the printed process color variable indicia are alphanumeric characters.
10. The method of claim 1 , wherein the printed process color variable indicia are icons or figures.
11. The method of claim 1 , wherein the predetermined minimum threshold is 15%.
12. The method of claim 1 , which comprises attenuating the average grayscale equivalent level for each component color when viewed through the red channel by multiplying the average grayscale equivalent level by 0.2126 in the additive color model.
13. The method of claim 1 , which comprises attenuating the average grayscale equivalent level for each component color when viewed through the green channel by multiplying the average grayscale equivalent level by 0.7152 in the additive color model.
14. The method of claim 1 , which comprises attenuating the average grayscale equivalent level for each component color when viewed through the blue channel by multiplying the average grayscale equivalent level by 0.0722 in the additive color model.
15. A method of producing a redundantly printed security-enhanced document comprising a substrate and process color variable indicia representing variable information printed on the substrate, the process color variable indicia comprising a plurality of different component colors, the method comprising:
verifying the plurality of different component colors for the process color variable indicia by:
determining, using red, green, and blue channels of an additive color model, an average grayscale equivalent level of each of the plurality of different component colors,
attenuating the determined average grayscale equivalent level of each of the plurality of different component colors with at least one value for at least one of the red, green, or blue channels of the additive color model,
determining which of the plurality of different component colors exhibit an attenuated grayscale equivalent level greater than or equal to a predetermined minimum threshold in at least one of the red, green, or blue channels of the additive color model, and
ensuring that a minimum of two of the plurality of different component colors to be used for the process color variable indicia each exhibit an attenuated grayscale equivalent level greater than or equal to the predetermined minimum threshold in at least one of the red, green, or blue channels of the additive color model, and such that a failure of printing of any one of the component colors for the process color variable indicia does not alter the meaning of the variable information represented by the other selected component color;
sending instructions intended to cause separate print heads to print the selected component colors to form the process color variable indicia on the substrate; and
applying a scratch-off coating covering at least a portion of the process color variable indicia on the substrate.
16. The method of claim 15 , which comprises attenuating the average grayscale equivalent level for each component color when viewed through the blue channel by 7% in the additive color model.
17. The method of claim 16 , further comprising printing the variable indicia in four component colors.
18. The method of claim 15 , wherein the information relates to an intended value of the document.
19. The method of claim 15 , wherein the printed process color variable indicia are alphanumeric characters.
20. A method of producing a redundantly printed security-enhanced document comprising a substrate and process color variable indicia representing variable information printed on the substrate, the process color variable indicia comprising a plurality of different component colors, the method comprising:
verifying the plurality of different component colors for the process color variable indicia by:
determining a variable indicia illuminating light color temperature,
determining, using the variable indicia illuminating light color temperature and red, green, and blue channels of an additive color model, an average grayscale equivalent level of each of the plurality of different component colors,
attenuating the determined average grayscale equivalent level of each of the plurality of different component colors with at least one value for at least one of the red, green, or blue channels of the additive color model,
determining which of the plurality of different component colors exhibit an attenuated grayscale equivalent level greater than or equal to a predetermined minimum threshold in at least one of the red, green, or blue channels of the additive color model, and
ensuring that a minimum of two of the plurality of different component colors to be used for the process color variable indicia each exhibit an attenuated grayscale equivalent level greater than or equal to the predetermined minimum threshold in at least one of the red, green, or blue channels of the additive color model;
sending instructions intended to cause separate print heads to print the selected component colors to form the process color variable indicia on the substrate; and
applying a scratch-off coating covering at least a portion of the process color variable indicia on the substrate.