Polycarbonate Card Color Personalization via Photon-Sensitive Layer Manipulation
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Solution Overview
Problem
Current methods for personalizing identity cards with color images are either insecure or require expensive equipment and complex manufacturing processes, especially when trying to produce secure, tamper-proof color images on polycarbonate cards.
Innovation Solution
A technology that uses a print-pixel grid and photon-sensitive layers, where a transparent layer is altered to opaque and an opaque layer is altered to transparent using specific wavelengths and intensities of photons, allowing for secure, tamper-resistant color image creation on identity cards using inexpensive customer-premises equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If surface printed color personalization is used, then color images can be placed on identity cards, but security is compromised compared to laser engraved photos inside the polycarbonate layer structure
Solution Approach 1:
The patent embeds the color image layers (cyan, magenta, yellow, black layers) within the polycarbonate card structure itself, nesting them between the front and back laminations. This nesting ensures the color images are as secure as the card structure, preventing tampering while maintaining color capability.
Solution Approach 2:
The patent uses composite material structures combining polycarbonate layers with integrated color pigment layers. The color images are created by selectively removing material to reveal underlying color layers, creating a composite structure that is both colorful and secure within the card body.
2Manufacturing precision
If digital printing is used before product collation, then high quality color images can be placed on identity cards, but the manufacturing process becomes highly complicated and requires expensive equipment
Solution Approach 1:
The color layers (cyan, magenta, yellow, black) are pre-printed onto the polycarbonate layers during the manufacturing process before final assembly. This preliminary action allows standard equipment to create high-quality color images that are integrated into the card structure, eliminating the need for complex post-manufacturing digital printing equipment.
Solution Approach 2:
The patent divides the color image creation into separate color layers (cyan, magenta, yellow, black) that are printed and assembled independently during manufacturing. This segmentation allows each layer to be processed with standard equipment, and the final color image emerges from the combination of these pre-printed layers, simplifying the overall manufacturing process.
3Adaptability or versatility
If D2T2 technology is used for color personalization, then color images can be produced on polycarbonate cards, but an overlay film must be applied which adds complexity
Solution Approach 1:
The patent merges the color image layers directly into the polycarbonate card structure during manufacturing, combining the personalization function with the card body structure. This integration eliminates the need for separate overlay films, as the color images are embedded within the card itself rather than applied as a surface layer.
4Reliability
If laser engraving is used to produce gray-scale images, then secure personalization is achieved, but color images cannot be produced
Solution Approach 1:
The patent uses color changes by incorporating cyan, magenta, yellow, and black pigment layers within the card structure. By selectively removing material to reveal these color layers, the system produces full-color images while maintaining the security of embedded features, overcoming the gray-scale limitation of traditional laser engraving.
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
Enables the secure, tamper-resistant personalization of identity cards with color images in a post-manufacturing environment, allowing for mass production followed by cost-effective personalization at customer locations, enhancing security and simplifying the manufacturing process.
Implementation Method 1
The image area consists of several layers of material located between a substrate and a lamination layer. The bottom layer of these image-area layers is a print-pixel grid which is covered by a transparent layer and an opaque layer of photon-sensitive materials. The transparent layer may be selectively altered to some level of opaque and the opaque layer may be selectively altered to transparent when exposed to photons.
Data Source
AI summary
Personalization of identity card by producing a color image thereon by selectively exposing photon-sensitive layers on the card to change between transparent and opaque thereby selectively revealing opaque colors from the photon-sensitive layer or from a printed substrate. Other systems and methods are disclosed.