Secure Document Core Material with Covert UV Pigments
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Solution Overview
Problem
Counterfeiters are becoming increasingly sophisticated in creating counterfeit secure documents, necessitating more effective security measures that include covert features difficult to reproduce and interlocking relationships to detect tampering.
Innovation Solution
Incorporating a synthetic print media with non-reactive absorbent materials like clay and covert pigments that adhere to these materials, allowing for unique distributions encoded in machine-readable data carriers, enabling automated authentication through UV illumination and comparison with stored representations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional security features are used in documents, then manufacturing is simpler and cost is lower, but counterfeiters can more easily reproduce them
Solution Approach 1:
The patent applies local quality by incorporating covert security features at specific locations within the document structure. The absorbent material is distributed in non-uniform patterns, and covert inks are applied only in certain areas, creating localized security characteristics that are difficult to reproduce but do not complicate the entire document structure.
Solution Approach 2:
The patent uses composite materials by combining absorbent materials (such as clay particles) with covert ink formulations that respond to specific stimuli. This creates a multi-layered security feature where the interaction between the absorbent material and covert ink produces authentication characteristics that are difficult to counterfeit.
2Reliability
If covert security features are added to documents, then anti-counterfeiting capability improves, but detection and verification become more difficult
Solution Approach 1:
The patent employs color changes as a detection mechanism for covert security features. The covert inks are designed to change color or become visible under specific conditions (such as UV illumination or chemical treatment), allowing authentication personnel to easily detect the presence of security features without requiring complex equipment.
Solution Approach 2:
The patent uses periodic action in the form of stimuli-responsive covert features that can be activated on demand. The security features remain covert under normal conditions but can be periodically revealed through controlled application of UV light, heat, or chemical agents, enabling verification when needed.
3Reliability
If security features are made more sophisticated, then counterfeiting resistance improves, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies segmentation by dividing the security feature into multiple discrete components: the absorbent material layer, the covert ink formulation, and the specific distribution pattern. Each component can be manufactured and quality-controlled independently, then assembled into the final security feature, reducing the overall manufacturing precision requirements while maintaining high counterfeiting resistance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a secure document core with unique, tamper-proof features that remain constant over the document's life, enhancing authentication and preventing unauthorized reproduction.
Implementation Method 1
a covert material adhering to particles of the absorbent material
Implementation Method 2
a covert material adhering to particles of the absorbent material. One example of the absorbent material is clay, and an example of the covert material is a pigment that is detectable in response to non-visible light illumination, such as a fluorescing UV pigment
Data Source
AI summary
Particles conveying a code are incorporated into polymer matrix to form a core document substrate. These particles may be colored to create a distinctive look of the document that makes it unique for a particular document issuer and enables visual authentication. Addition of a covert attribute to the particle, such as a UV pigment or hidden layer of material, allows a covert, forensic characteristic and it also allows a mathematical description to be calculated describing the random distribution of a specific area on a document and then captured on it (e.g., in the bar code or magnetic stripe or digital watermark on an ID document).