Multi-chromatic indicia redundancy for lottery ticket printing
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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 legal disputes, as the use of single spot color indicia is prone to partial printing failures, which are not effectively mitigated by current solutions such as legal disclaimers or automated press monitoring systems.
Innovation Solution
The implementation of redundantly printed security-enhanced documents with multiple overlapping or closely registered variable indicia in different colors, ensuring that the information remains legible even if one or more printing components fail, achieved through the use of multiple ink applications and process colors, with a minimum grayscale equivalent threshold to maintain readability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If single spot color indicia are used for printing, then the manufacturing process is simple and cost-effective, but the reliability of the printed information deteriorates due to partial printing failures from clogged inkjet heads
Solution Approach 1:
The patent divides the single color printing task into multiple color segments (cyan, magenta, yellow, black) that are printed separately and combined. Each color component is printed by a separate inkjet head, so if one head fails, the other color segments remain intact and can still convey the indicia information when combined.
Solution Approach 2:
The patent changes the printing parameter from single-color to multi-color printing. By using process colors (CMYK) instead of a single spot color, the system creates redundant information representation where the combination of color segments produces the final indicia, and individual segments provide backup information.
2Difficulty of detecting and measuring
If automated press monitoring systems are implemented, then the detection capability of misprints is improved, but the device complexity and cost increase significantly
Solution Approach 1:
The patent makes the printing system self-monitoring by embedding redundant color segments within the indicia itself. The multi-color structure inherently provides verification capability - if one color segment is missing or malformed, the other segments remain and can indicate a printing issue without requiring external monitoring equipment.
3Reliability
If multi-chromatic indicia are printed with multiple overlapping colors, then the reliability and security of the indicia are enhanced, but the manufacturing complexity increases
Solution Approach 1:
The patent makes the multi-color printing system perform multiple functions simultaneously: it produces the final colorful indicia for aesthetic purposes, creates redundant information representation for reliability, and embeds security features against tampering. The same color segmentation process serves all three purposes at once.
Solution Approach 2:
The patent combines multiple color printing operations into a single integrated printing process. The cyan, magenta, yellow, and black inks are applied in sequence by separate heads but are merged into a single indicia structure, creating a unified output that benefits from all color segments working together while simplifying the overall manufacturing workflow.
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.