Security Document Edge Trimming with Odd Profiles
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Solution Overview
Problem
Existing methods for producing security documents are susceptible to counterfeiting due to limited protection against wear and tear, complex quality control, and restricted adjustability, which restricts the production of documents with beveled or odd edges.
Innovation Solution
A method and device for producing security documents with odd and/or beveled edges, allowing for increased protection against counterfeiting by incorporating a trimming trajectory that includes curved and uneven sections, enabling the creation of unique edge profiles that can encode information and enhance authenticity verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional die-cutting processes are used, then production efficiency is maintained, but the security documents lack unique edge profiles and are susceptible to counterfeiting
Solution Approach 1:
The patent applies curved trimming trajectories to create beveled and odd edge profiles on security documents. Instead of straight linear cuts, the cutting device follows curved paths to generate unique edge geometries that are difficult to replicate, directly enhancing forgery protection while maintaining manufacturing feasibility through programmable motion control
Solution Approach 2:
The invention introduces asymmetric edge profiles through odd contour trimming. The cutting process creates non-uniform, irregular edge patterns that differ from conventional symmetric rectangular cuts. This asymmetry serves as a security feature because replicated documents would need to precisely reproduce these complex asymmetric patterns, which is extremely difficult with traditional cutting methods
2Reliability
If trimming tools are made adjustable to create different edge profiles, then security features are improved, but setup time and cost increase
Solution Approach 1:
The patent employs a dynamic cutting system where the trimming trajectory can be programmatically adjusted without physical tool changes. The cutting device can dynamically modify its path to create different beveled and odd edge profiles through controlled motion along predefined trajectories, eliminating the need for time-consuming manual reconfiguration of rigid die-cutting tools
Solution Approach 2:
The invention changes the parameters of the cutting process by varying the trimming trajectory parameters (curvature, angle, depth) to create different edge profiles. This allows the same cutting device to produce multiple security document variants with distinct edge characteristics simply by modifying motion parameters rather than physical tooling, significantly reducing setup time
3Reliability
If complex trimming trajectories are implemented, then unique edge profiles are created, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical die-cutting systems with a programmable cutting device that follows controlled trajectories. Instead of using intricate mechanical linkages and adjustable dies, the system uses programmed motion control to generate complex curved and odd edge profiles, simplifying the mechanical structure while maintaining the capability to create sophisticated security features
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 enhanced security against forgery by allowing for the production of security documents with unique edge profiles that are difficult to replicate, facilitating quick and reliable authenticity checks and improving the overall security features of the documents.
Implementation Method 1
the trimming is carried out continuously in time and space along a trimming trajectory
Data Source
Figure 1~2
Figure 1a
Figure 3
AI summary
The invention relates to a device and a method for producing a security document (1) and to a security document, wherein the security document (1) is provided in an oversized format, and the security document (1) is cut in at least one peripheral area, wherein an odd and/or chamfered profile of at least a portion of the longitudinal edge (18a, 18b) and/or of at least a portion (20, 21) of a transverse edge (19a, 19b) of the security document (1) is produced by the cutting operation.