Value Document Substrate Feature Substance Coding
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Solution Overview
Problem
Existing value documents, such as bank notes, lack the ability to simultaneously enhance authentication security and allow for the recognition of the document's type or value, particularly in machine processing applications.
Innovation Solution
Incorporating a first feature substance uniformly into the substrate and applying a luminescent and infrared absorbent feature substance in a coding format on the surface, allowing different user groups to perform authenticity checks and value recognition using distinct properties, with the luminescent substance emitting in the infrared range and the absorbent substance absorbing in a specific spectral range, making it difficult to imitate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a homogeneous mixture of two substances with different physical properties is used for high security authentication, then authentication security is improved, but the ability to recognize document type or value is lost
Solution Approach 1:
The patent divides the feature substances into separate functional groups: one substance (or mixture) provides authentication security through difficult-to-detect properties, while another substance provides machine-readable coding for document type recognition. This segmentation allows each substance to fulfill its specific function without compromising the other, resolving the contradiction between security and information retention.
Solution Approach 2:
The patent applies different properties of feature substances to different functional requirements: certain substances are positioned or configured to provide high-security authentication characteristics, while other substances are configured to provide machine-readable information. This local differentiation of quality allows simultaneous achievement of security and recognition capabilities.
2Reliability
If elaborate authenticity check is performed, then security level is improved, but additional effort and complexity for value recognition is increased
Solution Approach 1:
The patent segments the detection system into separate functional modules: one module handles authenticity verification using substances with difficult-to-detect properties, while another module handles value recognition using machine-readable coding. This segmentation allows each module to operate independently with appropriate complexity only where needed, reducing overall system complexity.
Solution Approach 2:
The patent uses machine-readable coding that creates a simplified representation of document information that can be rapidly processed without requiring elaborate analysis. This copying approach allows value recognition to occur through straightforward detection of coded patterns rather than complex analysis of document features.
3Adaptability or versatility
If feature substances are used for both authenticity check and value recognition, then versatility is improved, but security against forgery is worsened due to increased detectability
Solution Approach 1:
The patent segments the feature substances into distinct functional categories: authentication substances with hidden or difficult-to-detect properties, and coding substances with machine-readable characteristics. This segmentation ensures that the authentication properties remain concealed from potential forgers while still enabling versatile functionality through the separate coding system.
Solution Approach 2:
The patent assigns different detectability qualities to different feature substances: authentication substances are designed with properties that are difficult to detect or analyze, while coding substances are designed with properties that are easily detectable by machines but do not compromise security. This local differentiation of quality allows multi-functionality without increasing forgery risk.
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
This approach provides increased security against falsification and enables both authenticity and value recognition without additional effort, while keeping the methods used by different user groups separate and secure, preventing security breaches across user groups.
Implementation Method 1
The second feature substance is formed by a luminescent substance
Implementation Method 2
the third feature substance by a material absorbent in a special spectral range
Data Source
AI summary
The invention relates to a value document, in particular a bank note, having a value document substrate and different feature substances for checking the value document. According to the invention, a first feature substance is incorporated into the volume of the substrate of the value document, and second and third feature substances are applied to the value document substrate in a printing ink jointly and in the form of a coding. The second feature substance is formed by a luminescent substance, and the third feature substance by a material absorbent in a special spectral range. The two substances are used for the value recognition of different user groups.