Variable Film Layers for High-Quality Data Carrier Personalization
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Solution Overview
Problem
Existing data carriers face issues with poor color quality and restricted personalization methods due to full-surface modification, which limits flexibility and affects document-relevant properties during personalization processes.
Innovation Solution
A multi-layer data carrier production method involving a base layer and a transparent or translucent information layer with modified and unmodified subareas, utilizing different processing means such as lasers with specific wavelengths to personalize each area effectively, allowing for high-quality image representation and flexibility in personalization techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the entire surface of the information layer is modified with a receptive layer, then the document body becomes receptive to personalization processes, but the personalization quality deteriorates and certain personalization methods are prevented
Solution Approach 1:
The information layer is divided into modified sub-areas and unmodified sub-areas, allowing different processing tools to be applied to different regions. This segmentation enables high-quality personalization in unmodified areas while providing receptivity to personalization in modified areas, thus resolving the contradiction between versatility and quality.
Solution Approach 2:
Different regions of the information layer are given different properties: modified sub-areas have properties suitable for specific personalization processes, while unmodified sub-areas maintain their original high quality. This local differentiation allows each area to be optimized for its intended use, solving the contradiction between adaptability and manufacturing precision.
2Adaptability or versatility
If full-surface modification is applied to the information layer, then personalization can be achieved, but document-relevant properties are negatively affected and flexibility is limited
Solution Approach 1:
By segmenting the information layer into modified and unmodified sub-areas, the patent avoids applying modification across the entire surface. This allows personalization capability where needed while preserving document-relevant properties in unmodified areas, thus eliminating the harmful effects of full-surface modification.
Solution Approach 2:
The modification is extracted from being a universal full-surface treatment and applied only to specific sub-areas where personalization is required. This selective extraction of the modification function preserves the original properties of the information layer in unmodified areas, removing the harmful effects while maintaining personalization capability.
3Ease of manufacture
If a single processing tool is used for the entire information layer, then production is simplified, but high-quality personalization cannot be achieved in all areas
Solution Approach 1:
The information layer is segmented into sub-areas with different processing requirements, allowing appropriate processing tools to be selected for each region. This segmentation enables high-quality personalization in each area while maintaining relatively simple production processes, resolving the contradiction between ease of manufacture and manufacturing precision.
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 approach enables high-quality personalization across all areas without negative effects from layer properties, providing flexibility in personalization methods and maintaining document-relevant properties, while allowing for efficient production and secure information representation.
Implementation Method 1
the modified portion is absorbent with respect to light of said wavelength, and wherein the unmodified portion is transparent with respect to light of said wavelength. The laser light therefore cannot penetrate the information layer in the modified portion but can penetrate it in the unmodified portion.
Data Source
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AI summary
Disclosed is a method for producing a multi-layered data carrier (1), comprising at least one base layer (2), which has an upper side (3), and at least one transparent or translucent information layer (4), which is arranged on said upper side (3) and which contains personalised information (5a, 5b, 5c), the information layer (4) extending preferably entirely over the base layer (2), characterised in that the information layer (4) has at least one modified portion (6) and at least one unmodified portion (7), the information layer (4) being different in the unmodified portion (7) to the modified portion (6) in respect of its processing properties, and in that the information layer (4) is provided with personalised information (5a, 5b, 5c) in a personalisation step using at least one processing means (8, 9), the modified portion (6) of the information layer (4) reacting differently to the processing by the at least one processing means (8, 9) than the unmodified portion (7), whereby the information (5a) in the modified portion (6) is represented differently than the information (5b) in the unmodified portion.