Multi-chromatic indicia redundancy for scratch-off ticket integrity
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Solution Overview
Problem
Existing lottery scratch-off tickets face issues with misprints due to clogged inkjet heads, leading to incorrect prize interpretations and potential legal disputes, as single spot color indicia imaging is prone to failure, lacking redundancy and security against tampering.
Innovation Solution
A redundantly printed security-enhanced document with multiple overlapping variable indicia in different colors, ensuring that the information remains legible even if one or more printing components fail, using CMYK process colors or additional secondary colors for enhanced security and aesthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If single spot color indicia imaging is used, then the printing process is simple and fast, but the reliability of information delivery deteriorates due to inkjet head clogging causing misprints
Solution Approach 1:
The patent applies different colors (CMYK process colors or additional secondary colors) to different portions of the same indicium. This local differentiation ensures that if one color fails to print due to clogged inkjet heads, the remaining colors still convey the intended information, thereby maintaining reliability without sacrificing printing speed
Solution Approach 2:
The patent incorporates redundant color layers in advance during the printing process. By printing multiple colors that overlap to form the final indicium, the system prepares compensatory measures beforehand so that failure of one color layer does not result in complete information loss, thus cushioning against potential printing failures
2Ease of manufacture
If monochromatic black or red indicia are used, then the printing process is simple, but the security against tampering and misinterpretation deteriorates
Solution Approach 1:
The patent transitions from monochromatic indicia to multi-color indicia using CMYK process colors or additional secondary colors. This color differentiation makes tampering more detectable and reduces misinterpretation, as the specific color combination serves as an additional verification layer while maintaining manufacturing simplicity through standard printing processes
Solution Approach 2:
The patent combines multiple color layers (cyan, magenta, yellow, black, and optionally additional secondary colors) to create a composite indicium. This composite structure provides security against tampering and misinterpretation while being manufactured using conventional multi-color printing processes, thus maintaining ease of manufacture
3Reliability
If detailed legal disclaimers and automated press monitoring systems are implemented, then misprint issues are addressed, but the device complexity and cost increase
Solution Approach 1:
The patent extracts the reliability function from complex external systems (legal disclaimers and automated monitoring) and embeds it directly into the indicium design itself. By using multiple overlapping colors that inherently compensate for printing failures, the system achieves misprint mitigation without requiring additional monitoring equipment or complex legal frameworks
Solution Approach 2:
The multi-color indicium design is self-correcting and self-verifying. The overlapping color layers automatically compensate for printing failures without requiring external detection or correction systems, thereby achieving reliability improvement without increasing device complexity
Data Source
AI summary
A redundantly printed security-enhanced document, printing method and system ensure the meaning of the information imparted by variable indicia printed by redundant printing on the document with removable scratch-off coatings. By printing the variable indicia with multiple colors, redundancy and integrity of the intended indicia is achieved. Additionally, inverted color indicia countermeasures to pinprick attacks are also disclosed. 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. The resultant printed process color indicia maintains a grayscale equivalent level of a process color greater than or equal to the measured grayscale equivalent level of the substrate surface plus an additional contrast delta of 15%.