Multi-chromatic Indicia Redundancy for Scratch-off Ticket Misprints
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Solution Overview
Problem
Existing lottery scratch-off tickets often suffer from 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 is created using multiple ink applications of different colors, ensuring that the information remains legible even if one or more colors fail to print, achieved through the use of CMYK process colors, secondary background colors, and inverted foreground and background combinations, maintaining a minimum grayscale equivalence threshold for legibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If single spot color indicia imaging is used, then the document is simpler to produce, but the reliability of correct printing is reduced due to inkjet head clogging
Solution Approach 1:
The patent changes the parameter of color representation from single spot color to multi-color (CMYK process colors). By using four different ink applications (Cyan, Magenta, Yellow, Black) instead of a single color, the system maintains manufacturing simplicity while dramatically improving printing reliability through color redundancy
Solution Approach 2:
The patent creates redundant copies of the indicia information using multiple color channels. Each piece of information is encoded across four different color layers, so if one color fails to print, the information can still be recovered from the remaining color copies
2Reliability
If multiple ink applications of different colors are used, then the redundancy and security of the document are enhanced, but the device complexity increases
Solution Approach 1:
The patent segments the printing process into four independent color channels (CMYK). Each color is applied separately through its own inkjet head, allowing the system to manage complexity by dividing the printing function into modular, independent segments that can be controlled and monitored separately
Solution Approach 2:
The patent makes the printing system multi-functional by using the same physical infrastructure (substrate, printing press) to achieve both primary printing and redundant security printing simultaneously. The multi-color system serves dual purposes: aesthetic/colorful documentation and fault-tolerant information preservation
3Quantity of substance
If monochromatic black or red indicia are used, then the printing cost is lower, but the aesthetic quality of the document is reduced
Solution Approach 1:
The patent transitions from monochromatic color schemes to full-color CMYK printing. This color transformation enables aesthetically pleasing documents with multiple hues and shades while maintaining cost-effectiveness through efficient use of standard process colors that are already widely available in printing infrastructure
4Reliability
If detailed legal disclaimers and automated press monitoring systems are implemented, then the mitigation of misprint problems is improved, but the device complexity and cost increase
Solution Approach 1:
The patent implements preliminary action by building redundancy directly into the printing process itself, rather than relying on post-printing detection or legal disclaimers. The multi-color encoding is prepared in advance so that fault tolerance is inherent in the document structure before any misprint can occur
Solution Approach 2:
The patent enables the document to self-correct for printing errors through its redundant color structure. If one color fails to print, the remaining colors automatically provide the necessary information without requiring external monitoring systems or legal interpretations to determine the intended meaning
Data Source
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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%.