Security Element Motif for Infrared Authentication and Orientation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Security elements in documents, such as security threads, face challenges in high-speed installation, where distinguishing the correct side is difficult due to asymmetrical construction and the risk of unintended rotation, leading to defects and scrap production.
Innovation Solution
Incorporating a motif element that reflects or absorbs infrared radiation differently than the marking layer, while being indistinguishable in the visible spectrum, providing a hidden security feature that enhances the dual function of the marking layer for correct-side arrangement and increased security against forgery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a marking layer is added to the back side of the effect layer to enable correct-side arrangement, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The marking layer is designed to serve dual functions: it marks the back side of the effect layer for correct-side arrangement during high-speed installation, and simultaneously provides security features through its interaction with the motif element in the infrared spectral range. This multi-functionality resolves the contradiction by making the added layer contribute to both operational ease and security enhancement.
Solution Approach 2:
The motif element is designed with specific local properties: it is designed to be indistinguishable from the marking layer in the visible spectral range but to absorb or reflect infrared radiation differently. This local differentiation in the infrared range provides security features without affecting the visible marking function, thus adding security capability without significantly increasing operational complexity.
2Reliability
If a motif element is added to provide infrared security features, then the security is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The motif element's design exploits parameter changes in the infrared spectral range rather than requiring precise visible differentiation. By designing the motif element to interact with infrared radiation differently from the marking layer while remaining indistinguishable in the visible range, the security feature is achieved through spectral parameter differentiation rather than precise spatial or visual differentiation, thereby reducing manufacturing precision requirements.
3Ease of operation
If the marking layer is designed to be conspicuous in the visible spectrum for easy detection, then the ease of operation is improved, but the security is worsened because it can be more easily replicated
Solution Approach 1:
The security feature is moved from the visible spectral dimension to the infrared spectral dimension. The motif element is designed to be indistinguishable from the marking layer in the visible range (maintaining ease of operation) but to interact differently with infrared radiation (providing security). This dimensional shift from visible to infrared provides security without compromising the visibility and detectability of the marking layer during installation.
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 motif element enhances the security of the security element by providing a hidden feature that is more secure than visible features, ensuring correct installation and reducing forgery risks through its interaction with the marking layer, which now serves both marking and security functions.
Implementation Method 1
The motif element is designed to reflect radiation of the light spectrum essentially in the same way as the marking layer and to absorb radiation of the infrared spectrum differently than the marking layer
Implementation Method 2
The motif element is designed to reflect radiation of the light spectrum essentially in the same way as the marking layer
Data Source
Figure 1~2
Figure 3
AI summary
The invention relates to a security element (1) of a security document, comprising an effect layer (2), a marking layer (3), and a motif element (4), wherein the effect layer (2) is formed with a first surface, the marking layer (3) is formed with a second surface, and the motif element (4) is formed with a third surface, wherein the first surface is at least as large as the second surface, and the second surface is larger than the third surface, wherein the motif element (4) is arranged on the marking layer (3), wherein the marking layer (3) is arranged on a back side (6) of the effect layer (2) and is designed to mark the back side (6) of the effect layer (2), wherein the marking layer (3) serves as a control aid for the correct orientation of the security element (1) on the security document, and wherein the motif element (4) is designed as a printed element produced by a printing process.wherein the motif element (4) is configured to reflect radiation of the light spectrum in the same way as the marking layer (3) and to absorb radiation of the infrared spectrum differently than the marking layer (3), or the motif element (4) is configured to be transparent in the light spectrum and to absorb radiation of the infrared spectrum differently than the marking layer (3).