Image Forming Method for Anti-Forgery Data Recording Medium
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Solution Overview
Problem
Existing methods for securing data recording media, such as ID cards, are vulnerable to forgery and alteration, particularly when protection films are separated and reused, as they lack effective mechanisms to prevent unauthorized changes or re-use of the film and the card.
Innovation Solution
An image forming method and apparatus that decompose image data into cyan, magenta, yellow, and black components, recording these components on separate members of a data recording medium, with one member being bonded to a protection film and the other to a base material, allowing the formation of an image by overlapping these components, ensuring that even if the protection film is separated, the image remains intact on both surfaces, preventing forgery or alteration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protection film is pasted on a data recording medium to prevent forgery, then security against forgery is improved, but the protection film can be separated and reused leading to vulnerability to forgery and alteration
Solution Approach 1:
The image data is decomposed into cyan, magenta, yellow, and black components, with different components recorded on different members (protection film and base material). This segmentation ensures that even if the protection film is separated, the complete image cannot be reconstructed without all components, preventing forgery and alteration.
2Reliability
If image data is recorded on separate members and bonded, then forgery prevention is improved, but the complexity of the image forming process increases
Solution Approach 1:
The patent combines multiple image recording operations into a single integrated process where cyan, magenta, yellow, and black components are recorded on separate members and then bonded together. This merging approach maintains security while managing process complexity through systematic integration of the multi-step process.
3Manufacturing precision
If multiple color components are recorded on separate members, then image security is improved, but the manufacturing process becomes more complex
Solution Approach 1:
Different color components (cyan, magenta, yellow, black) are recorded at specific locations on different members according to their respective positions in the final bonded structure. This local quality approach ensures precise alignment of color components while maintaining ease of manufacture by treating each component recording as an independent localized operation.
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 ensures that the image remains secure and intact on both the protection film and the base material, even if the film is separated, effectively preventing forgery or alteration of the ID card, and allows for easy discrimination of genuine and forged images using optical means.
Implementation Method 1
a laser beam is irradiated to form a monochrome image F2
Implementation Method 2
forming, on the base material, the monochrome image F2 obtained in step (B2) by means of laser engraving
Implementation Method 3
the polymer cover layer is applied to the inkjet printed layer and is joined to the polymer layer partial composite by thermal lamination
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
According to one embodiment, an image forming method includes recording in a first recording portion (13, 70), on a first member (41) of a data recording medium (M), a first portion (D2, F2, D3, F3) of an image (FC) to be recorded in the data recording medium (M); recording, in a second recording portion (12), a second portion (D1, F1, D4, F4) of the image (FC) on a bonding surface (35b) to be bonded to the first member (41), of a second member (35) of the data recording medium (M) which is to be bonded to the first member (41) and covers the first portion (D2, F2, D3, F3) of the image (FC) that has been recorded on the first member (41); combining the second portion (D1, F1, D4, F4) of the image (FC) with the first portion (D2, F2, D3, F3) of the image (FC) to form the image (FC); and bonding the second member (35) to the first member (41).