Superparamagnetic Anti-Counterfeit Label with Opaque Shielding
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Solution Overview
Problem
Current magnetic anti-counterfeit labels have complex structures and low accuracy, making them difficult to manufacture, costly, and susceptible to counterfeiting, as they can be easily detected by optical instruments and MICR detectors.
Innovation Solution
A magnetic anti-counterfeit label comprising a substrate with a superparamagnetic ink layer, an opaque layer that visually hides the magnetic properties, and a protective non-magnetizable coating, allowing for easy printing on various surfaces and high identification accuracy using a simple identification system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If magnetic ink is used to form characters or patterns for anti-counterfeit labeling, then magnetic detection capability is achieved, but the label becomes detectable by MICR detectors and optical instruments, increasing susceptibility to counterfeiting
Solution Approach 1:
The patent introduces an opaque layer as an intermediary between the superparamagnetic ink layer and the external environment. This opaque layer visually hides the magnetic characters while allowing magnetic fields to pass through, creating a mediator that blocks optical detection but permits magnetic detection. This resolves the contradiction by making the label invisible to MICR detectors and optical instruments while maintaining magnetic detection capability for authentication.
Solution Approach 2:
The patent changes the magnetic properties of the ink from conventional magnetic ink to superparamagnetic ink. Superparamagnetic material exhibits strong magnetism only when exposed to an external magnetic field and becomes non-magnetic when the field is removed. This parameter change allows the label to be undetectable by standard MICR detectors under normal conditions while still being detectable by specialized superparameter detectors, thus reducing detectability while maintaining anti-counterfeit reliability.
2Measurement precision
If complex identification systems are used to improve detection accuracy, then identification precision increases, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent changes the magnetic response characteristics of the label by using superparamagnetic ink, which has distinct magnetic properties different from conventional magnetic materials. This parameter change enables the use of simpler detection systems because the superparameter effect provides a clear, unambiguous signal that is easy to distinguish from background noise, achieving high identification accuracy without requiring complex multi-layer detection systems.
Solution Approach 2:
The patent creates a simplified copy or representation of the magnetic signal characteristics. Instead of using complex multi-frequency or multi-mode magnetic signals that require sophisticated detection systems, the superparameter magnetic ink produces a simplified yet distinctive magnetic signature that can be detected by simpler devices, reducing system complexity while maintaining high identification accuracy.
3Ease of manufacture
If conventional magnetic ink is used for anti-counterfeit labels, then magnetic detection is possible, but the labels are easily counterfeited due to detectability by standard detectors
Solution Approach 1:
The patent changes the fundamental magnetic parameter of the ink from conventional magnetic properties to superparameter properties. This parameter change maintains ease of manufacture through standard printing processes while dramatically improving anti-counterfeit security. The superparameter characteristics create a magnetic signature that is undetectable by standard MICR detectors, making counterfeiting extremely difficult while preserving the simplicity of the manufacturing process.
Solution Approach 2:
The opaque layer serves as a protective intermediary that conceals the magnetic ink from visual and optical detection. This intermediary layer maintains the ease of printing and manufacturing while significantly enhancing security by preventing counterfeiters from visually inspecting or copying the magnetic pattern, thus resolving the contradiction between manufacturing ease and anti-counterfeit 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
The solution enables easy and cost-effective manufacturing, high accuracy in identification, and reduced susceptibility to counterfeiting by hiding magnetic properties from external detection, making it suitable for various applications such as files, paper money, and credit cards.
Implementation Method 1
the character, bar code, or pattern structure has a superparameter magnetic property
Data Source
Figure 1~2B
Figure 2C~4
Figure 5~6
AI summary
A magnetic anti-counterfeit label and identification system thereof, wherein the magnetic anti-counterfeit label (1) comprises a substrate (2), a magnetic ink layer, an opaque layer (4) and a protective coating (5). The magnetic ink layer covers the substrate (2). The opaque layer (4) covers the magnetic ink layer in order to visually hide the characters, bar code, and other patterns which are printed using magnetic ink. Additionally the protective coating (5) is composed of a polymer or a metal layer, which covers opaque layer (4). This identification system comprises a magnetic sensor (6) for sensing the magnitude of the magnetic field emitted by the magnetic anti-counterfeit label, a permanent magnet (7) or an electromagnet for magnetizing the magnetic anti-counterfeit label, a digital processing circuit (8) that is electrically connected to the magnetic sensor (6), and a frame (9) that is used to hold the magnetic sensor (6) and the digital processing circuit (8). The digital processing circuit (8) outputs a code corresponding to the magnetic anti-counterfeit label.