Color Secure ID Card Laser Etching and Optically Variable Ink Overlay
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Solution Overview
Problem
Existing secure identification documents, such as passports and ID cards, lack aesthetic appeal and effective anti-counterfeiting features, particularly when produced with black-and-white laser-etched portraits, which are not artistic and can be easily falsified.
Innovation Solution
A method for producing a color secure identification document involves laser etching black-and-white identity information on a substrate, overlaying a color image with optically variable ink, and applying a transparent protective layer with second anti-counterfeiting marks, enhancing both aesthetic appeal and anti-counterfeiting capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If black-and-white laser etching is used for identity information, then anti-counterfeiting capability is improved, but aesthetic appeal deteriorates
Solution Approach 1:
The patent segments the identification document into multiple functional layers: a substrate layer with laser-etched black-and-white identity information for anti-counterfeiting, and a separate color image layer printed on the surface for aesthetic appeal. This segmentation allows each layer to fulfill its specific function independently while working together as a unified document.
Solution Approach 2:
The patent employs composite material structure by combining the substrate material (with laser-etched information) and the color image layer (with printed color portrait and text). This composite approach enables the document to simultaneously achieve the security properties of laser etching and the aesthetic properties of color printing.
2Shape
If color image is printed on black-and-white etched information, then aesthetic appeal is improved, but anti-counterfeiting capability deteriorates
Solution Approach 1:
The patent applies preliminary action by first etching the black-and-white identity information on the substrate through laser before printing the color image layer. This sequence ensures that the anti-counterfeiting features are established on the substrate first, and the color layer serves only as an aesthetic overlay that cannot compromise the underlying security features.
3Strength
If transparent protective layer is applied, then protection of color image is improved, but visibility of underlying information deteriorates
Solution Approach 1:
The patent uses a transparent protective layer (thin film) applied over the color image and underlying etched information. This thin film provides mechanical protection and security features while maintaining optical transparency, allowing the underlying black-and-white laser etched information to remain visible through the protective layer.
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 method produces a secure identification document with a color portrait that is more aesthetically pleasing and resistant to falsification, utilizing optically variable marks that are difficult to replicate, thereby improving the document's anti-counterfeiting features.
Implementation Method 1
etching identity information on the substrate of data surface of the document by laser, and the said identity information comprises a black-and-white image and text; as the substrate undergoes irreversible chemical changes after laser etching
Implementation Method 2
printing the first anti-counterfeiting mark on the personalized data surface with optically variable ink; and changing the color of the first anti-counterfeiting mark and curing the mark sequentially, so that an optically variable mark is generated on the personalized data surface
Data Source
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AI summary
The invention relates to the technical field of secure identification document, specifically to a method for producing a color secure identification document and a color secure identification document thereof. The method comprises: etching identity information on the substrate of the data surface of document by laser, and the identity information comprises a black-and-white image and text information; printing a color image on the black-and-white image with color ink so that the color image and the black-and-white image are aligned and coincide with each other to form a personalized data surface; and printing a transparent protective layer on the upper surface of the personalized data surface with a transparent varnish, wherein the protective layer covers the color image. The invention effectively prevents falsification of the color portrait; and the secure identification document produced by the invention is provided with the color portrait of the holder, which makes the document more aesthetic and meet modern people's aesthetic requirements for the secure identification document.