Water-Based Inkjet Ink for Tampering Detection
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Solution Overview
Problem
Current tampering detection methods for securities using fluorescent dyes require special light sources for detection and are not environmentally or human-safe, while organic solvent-soluble dyes are costly and pose safety risks due to potential harm from disperse or oil-soluble dyes.
Innovation Solution
A water-based inkjet ink containing disperse or oil-soluble dyes without cyano and azo groups, such as quinophthalone or anthraquinone dyes, is developed for visual tampering detection, which is safer and more cost-effective, allowing for easy detection of tampering attempts using organic solvents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If fluorescent dyes are used for tampering detection, then detection capability is improved, but safety and environmental harm worsen
Solution Approach 1:
The patent replaces expensive, harmful fluorescent dyes with inexpensive, safe water-based ink formulations that achieve the same tampering detection function without requiring special detection equipment, thereby eliminating environmental and safety hazards
Solution Approach 2:
The patent substitutes the optical detection system (fluorescent dyes requiring UV light sources) with a simple visual inspection system using water-based inks that show tampering under natural light, replacing complex detection mechanisms with a simpler alternative
2Ease of operation
If organic solvent-soluble dyes are used for tampering detection, then visual detection capability is improved, but cost and safety worsen
Solution Approach 1:
The patent changes the chemical composition parameters of the ink by using water-based formulations with specific dyes (C.I. Disperse Yellow 54, C.I. Disperse Red 53, C.I. Disperse Blue 72) instead of organic solvent-soluble dyes, achieving both visual detection capability and cost reduction
3Stability of the object's composition
If disperse or oil-soluble dyes are used, then color fastness is improved, but safety and environmental impact worsen
Solution Approach 1:
The patent creates a composite water-based ink formulation combining multiple safe dye components (disperse and/or oil-soluble dyes without cyano and azo groups) with water and auxiliary agents, achieving both color fastness and environmental safety
4Object-affected harmful factors
If water-based ink with safe dyes is used, then safety is improved, but detection capability may worsen
Solution Approach 1:
The patent creates a simplified version of tampering detection that copies the essential function of fluorescent dye detection but uses safe water-based inks visible under natural light, eliminating the need for UV light sources while maintaining detection capability
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 water-based inkjet ink enables safe and cost-effective visual detection of tampering on securities, reducing production costs and environmental hazards while ensuring high safety standards.
Implementation Method 1
A water-based inkjet ink containing disperse or oil-soluble dyes without cyano and azo groups... enables safe and cost-effective visual detection of tampering on securities
Data Source
AI summary
A water-based inkjet ink for tampering prevention which readily allows detection of evidence of tampering by visual inspection using a variety of organic solvents on the written content of a printed article for financial securities or the like, a method for inkjet printing using the same, and a printed article. The water-based inkjet ink for tampering detection contains at least one type of disperse or oil-soluble dye which includes no cyano groups or azo groups, at least one type of dispersing agent, at least one type of water-soluble organic solvent and water.