Information Recording Body Transparent Ink Layer Security
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Solution Overview
Problem
Existing information recording mediums using electronic watermark technology are difficult to read and decode with general-purpose devices and are prone to counterfeiting, as they require specialized decoding applications and are easily duplicated.
Innovation Solution
An information recording medium comprising a base material with a lustrous ink layer, a colored ink layer forming a first pattern, and a transparent ink layer forming a second pattern, where the second pattern includes information convertible into a specific code and is difficult to visually recognize, allowing easy reading with general-purpose devices while being resistant to counterfeiting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electronic watermark technology is used with a lustrous layer and transparent layer, then security against counterfeiting is improved, but readability with general-purpose devices deteriorates
Solution Approach 1:
The information recording medium is segmented into multiple functional layers: a lustrous layer for security, a transparent layer for information encoding, and a base material. This segmentation allows each layer to serve its specific function while collectively solving both security and readability requirements
Solution Approach 2:
The transparent layer containing machine-readable information is nested within or alongside the lustrous layer. The transparent layer's information is positioned such that it can be accessed by general-purpose devices while the lustrous layer provides security, creating a nested structure where both functions coexist
2Measurement precision
If a dedicated decoding application program is required, then decoding accuracy is improved, but device complexity and ease of use deteriorate
Solution Approach 1:
The transparent layer is designed to be readable by universal general-purpose devices such as smartphones without requiring dedicated decoding applications. The information encoding uses standard formats that can be processed by existing camera and image processing capabilities of common devices
Solution Approach 2:
The information in the transparent layer is encoded in a format that can be easily copied and read by general-purpose devices using their existing imaging and processing capabilities, eliminating the need for specialized decoding hardware or software
3Reliability
If image information is embedded in the printed material, then security is improved, but visual recognizability deteriorates
Solution Approach 1:
Different regions of the printed material have different optical properties: the lustrous layer provides security features with specific reflectivity, while the transparent layer contains information that is visually subtle but machine-readable. This local differentiation allows security and information embedding without compromising overall visual appearance
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 enables easy reading and decoding of the information recording medium with general-purpose devices and provides enhanced security against counterfeiting by utilizing a transparent ink layer that is difficult to visually recognize.
Implementation Method 1
the third printed layer formed by a transparent ink on the same side as the one surface, in which the second printed layer forms a first pattern, the third printed layer forms a second pattern
Data Source
Figure 1(a)~1(b)
Figure 2(a)~2(c)
Figure 3A
AI summary
The present invention addresses the problem of providing: an information recording body which can be easily read and deciphered by a typical reading device and for which reproduction or the like is difficult; and a reading device or the like for said information recording body. This information recording body 1 comprises a substrate 2, a bright ink layer 5 formed from bright ink on one surface of the substrate 2, a colored ink layer 3 formed from colored ink, and a transparent ink layer 4 formed from transparent ink, wherein: the colored ink layer 3 forms a first pattern 100; the transparent ink layer 4 forms a second pattern 200; the entire areas of the first pattern 100 and the second pattern 200 are superimposed, in plan view, on the region where the bright ink layer 5 is formed; the second pattern 200 includes information that can be converted into a specific code; and at least part of the second pattern 200 is superimposed on the first pattern 100.