Forge-proof Document Security via Perforation and Mirrored Laser Patterns
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current forge-proof documents lack advanced security features to effectively prevent forgery and counterfeiting, particularly in documents like passports and tickets, as existing security measures can be easily replicated by forgers.
Innovation Solution
Incorporating a unique combination of a perforation pattern and a mirrored image feature on both sides of the document, where the perforation pattern displays an image when viewed against a bright background and a corresponding image is visible when light is reflected, using techniques like laser engraving, inkjet printing, or laser printing, ensuring that the images align and coincide when viewed from different angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional security features (water marks, holograms) are used, then basic security against forgery is provided, but the security can be easily replicated by forgers with adequate technical knowledge
Solution Approach 1:
The document is divided into a front side and a back side, each containing security features that must correspond to each other. The perforation pattern on the front side must match the printed pattern on the back side, creating a segmented verification system that is difficult to replicate completely
Solution Approach 2:
The security verification extends from a single-sided feature to a multi-dimensional system involving both front and back sides of the document. The perforation pattern creates a three-dimensional effect with light transmission, while requiring correspondence with the two-dimensional printed pattern on the opposite side
2Reliability
If a perforation pattern is applied by mechanical means (conically formed needles), then a security feature is created, but cup-shaped edges or burrs are created that are easily discernible and indicate forgery
Solution Approach 1:
The mechanical perforation process using conically formed needles is replaced with a laser-based system. The laser ablates material without creating mechanical burrs or cup-shaped edges, producing a clean perforation that cannot be easily replicated by mechanical means and provides a tactile verification method
3Reliability
If corresponding image information is applied on both front and back sides, then validation is facilitated and authenticity is enhanced, but the complexity of the document structure increases
Solution Approach 1:
While corresponding image information is present on both sides, the features are asymmetric in their implementation: the front side has a perforation pattern that transmits light, while the back side has a printed pattern that reflects light. This asymmetric approach provides verification without requiring identical structures on both sides
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
This configuration significantly enhances security against forgery by making it difficult for counterfeiters to replicate the document, as the alignment and coincidence of images require precise technical knowledge and equipment, such as lasers, making it harder to produce a perfect forgery without detection.
Implementation Method 1
the perforation pattern which displays a first image information when viewed against a bright background... This measure has the advantage that at the position of the perforation the material, for instance paper, plastic or textile is completely removed
Implementation Method 2
a second security feature comprising a pattern which displays a second image information when light is reflected falling on the pattern... made e.g. by laser engraving
Data Source
Figure 1~4
Figure 5
Figure 6~7
AI summary
The present invention relates to a forge-proof document comprising: - a front side, - a back side, - a first security feature comprising a perforation pattern which displays a first image information when viewed against a bright background, and - a second security feature comprising a pattern which displays a second image information when light is reflected falling on the pattern, - wherein the first and the second image information to be displayed on the forge- proof document correspond with each other, - wherein the front side comprises the second security feature, - wherein the back side comprises the second security feature, and - wherein the second image information of the back side is the mirrored image information of the second image information of the front side.