Security Mark Production Using Simultaneous Backing and Printing Dies
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Solution Overview
Problem
Current security measures for documents of value, such as banknotes and passports, lack advanced authentication features that can coexist with existing security elements and provide multiple verification methods, making them vulnerable to counterfeiting and difficult to reproduce.
Innovation Solution
A device and method that applies a security mark with a pre-designed image visible under light and temporarily revealable using ultraviolet light, infrared light, or heat, using simultaneous backing and printing dies combined with a grinding wheel, ensuring absolute position matching and multi-tone authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional watermarks are used for security authentication, then the security mark is visible when held to light and difficult to counterfeit, but it provides only a single verification method and lacks multi-layered authentication capabilities
Solution Approach 1:
The security mark is divided into two distinct components: a watermark layer visible when held to light, and a fluorescent layer visible under ultraviolet illumination. This segmentation allows each layer to provide independent verification, transforming a single-verification system into a multi-verification system that enhances both reliability and versatility
Solution Approach 2:
The patent embeds the fluorescent security layer within the paper structure at the same position as the watermark, creating a nested configuration where one security feature is positioned within another. This nested arrangement ensures perfect positional alignment between the watermark and fluorescent mark, allowing both verification methods to operate simultaneously without requiring separate positioning systems
2Reliability
If multiple security features are added to documents of value, then authentication capability is enhanced, but the complexity of the device and production process increases
Solution Approach 1:
The patent combines the watermark formation process and fluorescent mark application into a single integrated operation. The relief printing die simultaneously creates both the watermark by displacing paper fibers and transfers the fluorescent ink in one passing, eliminating the need for separate application steps and reducing device complexity while maintaining multi-layered security
Solution Approach 2:
The relief printing die serves multiple functions: it acts as the watermark template, the fluorescent ink transfer medium, and the positioning reference. This multi-functional tool consolidates what would traditionally require separate components, simplifying the production device while delivering enhanced authentication capabilities
3Measurement precision
If precise positioning of security marks is required for absolute position matching, then authentication accuracy is improved, but manufacturing precision requirements and production difficulty increase
Solution Approach 1:
The watermark pattern is formed first during the paper manufacturing process, establishing the precise position and orientation of the security mark before any fluorescent material is applied. This preliminary action creates a fixed reference framework that guides subsequent fluorescent ink transfer, ensuring perfect positional alignment without requiring high-precision positioning during the fluorescent application step
Solution Approach 2:
The fluorescent security mark uses the watermark pattern itself as its positioning template. The fluorescent ink transfers only to areas where the watermark exists, using the watermark's own structure to define the precise location and shape of the fluorescent mark. This self-positioning mechanism eliminates the need for external positioning systems and achieves perfect alignment automatically
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 secure, multi-verification security mark that is difficult to reproduce, enhancing authentication capabilities and compatibility with existing security features, while being cost-effective and easily integratable into industrial production processes.
Implementation Method 1
subjecting said sheet of paper to abrasion by a rotary grinding wheel so that said approach distance causes wearing out of said front without passing through said sheet of paper
Implementation Method 2
at least one inking roller positioned so as to make contact with said back and depositing fluorescent ink thereon
Implementation Method 3
at least an additional verification by temporarily revealing the same pre-designed image by applying a revealing means such as for example ultraviolet light
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A device for making security marks (1) by means of a plurality of simultaneously backing and printing dies (30), each with a pre-designed image (31), makes it possible to subject a sheet of paper (2) to an abrasion and printing method using the dies inked by inking rollers (25a-25d) with one or more inks not visible to the naked eye, but revealable by one or more temporarily applicable revealing stimuli: ultraviolet, infrared or polarized light, heat, etc., wherein the security mark (1) shows as authentication evidence a pre-designed image invisible to the naked eye, but which becomes visible in many different ways, such as one first verification against the light due to the image engraved on the obverse, and at least one second form of verification under a revealing stimulus: ultraviolet, infrared or polarized light, heat, etc., wherein all forms in which the images are revealed on the paper have an absolute matching location.