Security Document Holes With Colored Ink Injection
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Solution Overview
Problem
Existing security documents face challenges in securely storing individualizing information, as they can be vulnerable to manipulation, counterfeiting, and falsification, particularly when the information is only printed on the surface and susceptible to abrasion or other damage.
Innovation Solution
A method involving the use of laser radiation to create holes in a security document substrate, where colored ink is injected into these holes using a printing process, ensuring the information is stored both internally and externally, providing high contrast and enhanced protection against forgery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If information is printed on the surface of the security document, then the information is easily applied and visible, but the information is vulnerable to manipulation, counterfeiting, and abrasion
Solution Approach 1:
The patent transitions information storage from a two-dimensional surface print to a three-dimensional embedded structure by creating holes within the substrate and filling them with colored ink. This dimensional change embeds the information within the document's interior, making it resistant to surface-level manipulation and abrasion while maintaining visibility through the substrate.
Solution Approach 2:
The patent implements nesting by placing the information-containing colored ink inside the holes created within the substrate. The information is nested within the document structure itself, surrounded by the substrate material, which provides physical protection against removal and falsification while allowing the information to remain visible through the transparent or translucent substrate.
2Reliability
If holes are created in the substrate and colored ink is injected, then information is securely embedded and protected, but the manufacturing process becomes more complex
Solution Approach 1:
The patent replaces traditional mechanical printing methods with a combination of laser technology and injection processes. The laser creates precise holes within the substrate, and the colored ink is then injected into these holes, eliminating the need for complex surface printing mechanisms while achieving secure information embedding.
Solution Approach 2:
The patent utilizes changes in the substrate's physical properties, specifically its transparency or translucency, to enable visibility of the embedded information. By selecting substrates with appropriate optical parameters, the patent allows the colored ink within the holes to be visible without requiring complex display mechanisms, thus simplifying the overall system while maintaining security.
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 method effectively secures information by embedding it within the substrate, making it difficult to counterfeit or alter, as the ink diffuses into the material, providing a high level of protection against environmental damage and forgery attempts.
Implementation Method 1
forming holes (15) in a surface (5) of the substrate (2)
Implementation Method 2
the ink diffuses into the material
Data Source
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AI summary
The invention relates to a method and device (30) for producing a security document (1) and to a security document (1). The invention is based on the basic concept of introducing holes (15) on the surface (5) of a substrate (2) of a security document (1) and to apply an ink (20) in said holes. Said ink is preferably designed such that it comprises colorants (53) which diffuse into the substrate (2). The ink (20) applied by printing is introduced deeper into the document than an ink (20) that is printed merely onto the surface (5) and is thereby better protected from tampering and/or damage during usage.