Long Magnetic Code Security Thread for Banknote Authentication
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Solution Overview
Problem
Current document of value security features, such as magnetic coding, lack the ability to provide high information content and reliable authenticity verification, especially when it comes to distinguishing between genuine and counterfeit documents.
Innovation Solution
Incorporating a long magnetic code that spans the entire length of a security element within the document substrate, combined with additional machine-readable features like luminescent or magnetic print motifs, to create a unique and reliable combined code that enhances authenticity verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If traditional short magnetic codes are used in security elements, then the device complexity is low and ease of manufacture is high, but the information content is limited and authenticity verification reliability is insufficient
Solution Approach 1:
The magnetic code is segmented into multiple magnetic regions with different coercive field strengths (first magnetic region with first coercive field strength, second magnetic region with second coercive field strength). This segmentation allows encoding more information within the same physical space, increasing information content while maintaining manageable device complexity through systematic organization of magnetic segments.
Solution Approach 2:
Different regions of the magnetic code are assigned different local qualities, specifically different coercive field strengths. The first magnetic region has a first coercive field strength while the second magnetic region has a second coercive field strength. This local differentiation enables higher information density and improved verification reliability without proportionally increasing overall device complexity.
2Reliability
If multiple magnetic regions with different coercive field strengths are used, then information content and verification reliability improve, but manufacturing precision requirements increase
Solution Approach 1:
The security element with the magnetic code is embedded in the document substrate at a predetermined position before final document assembly. This preliminary positioning ensures that the magnetic code is correctly aligned with the document structure, reducing the manufacturing precision requirements for subsequent assembly steps while maintaining verification reliability.
Solution Approach 2:
The magnetic code acts as an intermediary verification element that bridges the security element and the document substrate. By embedding the security element with predetermined magnetic characteristics into the substrate, the system creates a reliable connection that ensures proper alignment and positioning, thereby reducing overall manufacturing precision requirements while maintaining high verification reliability.
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 solution provides high information content and reliable detection by magnetic sensors, effectively preventing counterfeiting by ensuring the magnetic code and additional features are aligned and integrated with register accuracy, thus improving the document's authenticity verification capabilities.
Implementation Method 1
the code for a security thread can be a magnetic code with a sequence of magnetic and non-magnetic areas
Implementation Method 2
The first magnetic region is arranged immediately adjacent to the second magnetic region along the predetermined direction
Data Source
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AI summary
The invention relates to a value document, comprising a value document substrate having a value document substrate control feature and an elongate security element, introduced into the value document substrate, having a security element control feature, wherein the security element extends from one end of the value document substrate to another end of the value document substrate and is introduced into the value document substrate such that the security element control feature is oriented with respect to the value document substrate control feature, and the security element has precisely one long magnetic code that extends essentially over the entire length of the elongate security element introduced into the value document substrate.