Security Document Individualization via Perforated Lamination
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Solution Overview
Problem
Decentralized security document individualization methods lack the same level of forgery-proofing as centrally produced documents, as protective layers can be easily removed or replaced, reducing the security of the documents against subsequent falsifications.
Innovation Solution
A lamination body with perforation openings on its outer surface, allowing individualization information to be printed through these openings onto an inner information layer, creating a monolithic connection that makes manipulation difficult, combined with inkjet printing for precise color representation and diffusion of colorants into the material layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If individualization information is printed on the outer surface of a document blank, then decentralized individualization is enabled, but the security against falsification is reduced because protective layers can be easily removed or replaced
Solution Approach 1:
The individualization information is nested within the lamination body structure by printing through perforation openings onto an information layer that is integrated into the laminated document blank. This nesting ensures the information is embedded within the security document structure rather than merely surface-applied, making it resistant to removal or replacement while enabling decentralized production.
Solution Approach 2:
The lamination body is pre-prepared with perforation openings and an information layer before the individualization process. This preliminary preparation allows the individualization information to be subsequently printed through the openings onto the information layer in a decentralized manner, while the pre-established lamination structure provides the security against falsification that would otherwise require centralized production.
2Reliability
If a lamination body with perforation openings is used to print individualization information onto an information layer, then security against falsification is enhanced, but the device complexity increases
Solution Approach 1:
The lamination body is segmented into distinct functional layers: an outer material layer with perforation openings, an information layer for receiving individualization information, and potentially other security layers. This segmentation allows each layer to perform its specific function while maintaining overall security, and the modular structure can be manufactured using standard lamination processes.
Solution Approach 2:
The outer material layer incorporates perforation openings that create a porous structure, allowing printing material to pass through to the information layer. This porous design enables the security enhancement without requiring completely opaque or solid structures, and the perforations can be created using conventional punching or drilling techniques during lamination body manufacture.
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 enhances the security of decentralized security documents by making it difficult to remove or replace individualization information, maintaining a high level of protection against falsifications, similar to centrally produced documents, while allowing for decentralized production.
Implementation Method 1
The preparations are printed on the outer surface in such a way that at least one part of the individualization information is printed through the perforation openings onto the information layer
Implementation Method 2
which includes colorants that diffuse into the substrate
Data Source
Figure 1~4
Figure 2a~2b
Figure 5a~5c
AI summary
The invention relates to a method for individualizing a security document (90, 80), comprising the steps of providing a document blank (10; 110), wherein the document blank (10; 110) comprises a lamination body (11); providing a digital printing device (120); printing on at least one outer surface (19) of the lamination body (11) by means of the digital printing device (120) by means of at least one preparation in order to introduce individualization information (18) into the lamination body (11); wherein the document blank (10; 110) having a lamination body (11) is provided, which at least in an individualization region (17) in an outer material layer (13) adjacent to the at least one outer surface (19) has a plurality of perforation openings (14) that penetrate the outer material layer (13) to an information layer (15), and the individualization information (18) is printed onto the outer surface (19) in such a way that at least some (18-1) of the individualization information (18) is printed onto the information layer (15) through the perforation openings (14). The invention further relates to a system (100) for individualizing documents, comprising: one or more document blanks (110) having a lamination body (11); a digital printing device (120), wherein the lamination body (11) has a material layer (13) adjacent to an outside (19) and having perforation openings (14), which penetrate said outer layer (13) adjacent to the outer surface (19) to an information layer (15), and the printing device (120) is designed in such a way that at least some (18-1) of the individualization information (18) is printed onto the information layer (15) through the perforation openings (14).