Invisible Ink Identifier for Printed Material Management
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Solution Overview
Problem
Existing printed material management systems degrade the appearance of printed materials due to identification marks printed with the same toner as the text, making them difficult to manage and identify effectively.
Innovation Solution
A printing device and management system that uses invisible ink to print identifiers on printed materials, which are only visible under special light, allowing for effective management and identification while maintaining the appearance of the materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If identification marks are printed with the same toner as text, then the printed material can be managed and identified, but the appearance of the printed material is degraded
Solution Approach 1:
The patent applies color changes principle by using invisible ink that changes its optical properties under special light. The identification mark is printed with invisible ink that appears transparent under normal light but becomes visible when irradiated with specific wavelengths of light, thus resolving the contradiction between identification reliability and appearance quality
Solution Approach 2:
The patent applies parameter changes principle by altering the optical parameters of the ink material. The invisible ink has different reflectivity or fluorescence characteristics under different light conditions, allowing the identification mark to be invisible under normal viewing conditions but detectable under special light irradiation
2Ease of operation
If identification marks are printed with visible ink, then they are easily readable, but they compromise the aesthetic quality and professionalism of the document
Solution Approach 1:
The invisible ink undergoes color changes or optical property changes when exposed to special light wavelengths, making the identification mark readable only under controlled conditions while maintaining document aesthetics under normal viewing conditions
3Measurement precision
If multiple identification marks are printed for redundancy, then detection accuracy improves, but the appearance degradation increases
Solution Approach 1:
Multiple identification marks printed with invisible ink do not degrade appearance under normal light since they remain invisible. Under special light, multiple marks can be detected simultaneously, improving detection accuracy without compromising appearance quality
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 system reduces appearance degradation, enables multiple identifiers for redundancy, ensures thorough discarding, and restricts unauthorized copying by making identifiers invisible under normal light, thus enhancing management and security.
Implementation Method 1
The providing unit prints the identifier with invisible ink on the printed material, and the identifier is visually recognizable under special light and invisible under normal light
Data Source
AI summary
A printing device includes a providing unit configured to provide to a printed material an identifier for managing the printed material. The providing unit prints the identifier with invisible ink on the printed material. The identifier is visually recognizable under special light and invisible under normal light.