Security Element Using Magnetic Materials with Equal Remanence
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Security elements with magnetic materials used in documents of value are easily detectable, making them susceptible to forgery as the distribution of magnetic material can be imitated, thus failing to provide adequate protection against counterfeiting.
Innovation Solution
A security element incorporating at least two magnetic materials with different coercive field strengths but equal remanence, applied in various forms such as characters or patterns, which can be integrated into or onto a document substrate or a separate transfer material, ensuring the magnetic materials are equally magnetized and detectable only at specific points, thereby enhancing authenticity verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If magnetic material is applied onto documents of value for verification, then authenticity checking is enabled, but the security element becomes easily detectable and susceptible to forgery
Solution Approach 1:
The patent changes the magnetic parameters by using materials with different coercive field strengths (Hc1 and Hc2) while maintaining equal remanence (Mr). This parameter differentiation creates a magnetic signature that is difficult to replicate, as forgers would need to precisely match both the remanence and coercive field characteristics. The verification process uses magnetizing fields of specific strengths to selectively magnetize or demagnetize certain materials, creating a dynamic response pattern that authenticates the document.
Solution Approach 2:
The patent employs composite magnetic structures by combining at least two different magnetic materials (first magnetic material and second magnetic material) with distinct coercive field strengths. These materials are applied in specific patterns, arrangements, or layer configurations on the document. The composite nature creates a complex magnetic signature that requires precise replication of multiple material properties and spatial arrangements, significantly increasing the difficulty of forgery while maintaining reliable verification capability.
2Loss of information
If magnetic material distribution is used for coding and verification, then document type identification is enabled, but the magnetic material distribution can be easily imitated
Solution Approach 1:
The patent applies magnetic materials with different coercive field strengths in specific local areas, patterns, or arrangements on the document. Each region may contain different magnetic material compositions or configurations, creating a spatially varying magnetic signature. This local differentiation enables encoding of document-specific information while making replication difficult, as the forger would need to precisely reproduce both the spatial distribution and the specific magnetic properties of each local region.
Solution Approach 2:
The patent encodes information by varying magnetic parameters (coercive field strength, remanence, material composition) across different regions of the document. The verification system reads these parameter variations to identify document type and authenticity. Because the encoding relies on multiple magnetic parameters rather than simple presence/absence of magnetic material, the complexity of accurate replication increases significantly, reducing the ease of forgery while preserving information capacity.
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 high level of protection against forgery by ensuring that the magnetic materials are detectable only under specific conditions, making it difficult to imitate the distribution of magnetic material, thus enhancing the security and authenticity verification of documents of value.
Implementation Method 1
the magnetic materials have different coercive field strengths and are applied onto and/or incorporated in the security element in such a way that their remanence is equal
Implementation Method 2
the magnetic materials have different coercive field strengths and are applied onto and/or incorporated in the security element in such a way that their remanence is equal
Data Source
AI summary
The invention relates to a security element for protecting documents of value, which has magnetic material. Furthermore, the invention relates to a document of value, a transfer material and method for producing such security elements and documents of value as well as a method and an apparatus for checking such a security element or document of value.According to the invention the security element has at least two magnetic materials, wherein the magnetic materials have different coercive field strengths and are applied onto and/or incorporated in the security element in such a manner that their remanence is equally high.