Chemically Reactive Security Ink for Fraud Detection

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing security documents are vulnerable to fraudulent modifications, as current chemically reactive inks are not effective in detecting alterations made using solvents, particularly in areas with toner ink, where solvent-based methods are less effective.

Innovation Solution

A chemically reactive security ink comprising a solvent-soluble dye and a non-drying vehicle, which changes color or becomes transparent when exposed to solvents, is used to mask hidden messages on security documents, making tampering evident by revealing a warning message.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If solvent-sensitive inks are used to mask alterations, then fraud detection is improved, but the ink may be completely removed by prolonged solvent exposure, making the security feature ineffective

Engineering Contradiction:

Improvefraud detection reliabilityVSAvoidduration of ink persistence

Core Design Contradiction:

ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The patent applies parameter changes by modifying the chemical composition of the ink vehicle to include specific resins (polyvinyl alcohol, carboxymethyl cellulose, or starch) that alter the ink's solubility characteristics. These parameter changes enable the ink to resist complete removal by solvents while maintaining its solvent-sensitive masking function, thus resolving the contradiction between fraud detection reliability and ink persistence duration.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses composite materials by combining solvent-sensitive dyes with specific resinous vehicles (polyvinyl alcohol, carboxymethyl cellulose, or starch) to create an ink formulation that exhibits both solvent sensitivity for fraud detection and enhanced resistance to complete removal. This composite approach allows the ink to maintain its security function while preventing total dissolution under prolonged solvent exposure.

Inventive Principle:

Principle #40Composite materials

2Ease of operation

If check washing with solvents is used to remove valid data, then fraudulent alteration is enabled, but the effectiveness is reduced in areas with toner ink

Engineering Contradiction:

Improveease of fraudulent alterationVSAvoidsolvent effectiveness against toner ink

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent converts the harmful effect of solvent exposure into a beneficial security feature. The solvent-sensitive ink is designed to be removed by solvents (enabling detection of alteration attempts) while the resinous vehicle components provide resistance to complete removal. This creates a situation where solvent exposure reveals fraud attempts through the masking ink's selective removal pattern, turning the potential harm of solvent effectiveness into a beneficial detection mechanism.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Reliability

If bleeding ink with non-drying vehicle is used, then security features are enhanced, but the ink may not provide sufficient resistance to complete solvent removal

Engineering Contradiction:

Improvesecurity feature reliabilityVSAvoidink substance loss to solvent

Core Design Contradiction:

ReliabilityVSLoss of substance

Solution Approach 1:

The patent applies parameter changes by modifying the ink vehicle composition to include specific resinous components (polyvinyl alcohol, carboxymethyl cellulose, or starch) that alter the ink's solubility and resistance characteristics. These parameter changes enable the ink to maintain sufficient substance resistance to solvent removal while preserving the bleeding and security feature reliability, thus resolving the contradiction between security enhancement and substance loss resistance.

Inventive Principle:

Principle #35Parameter changes

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 ink effectively prevents fraudulent alterations by revealing a hidden message when solvent is applied, providing robust fraud protection and compatibility with laser printing processes.

Implementation Method 1

The chemically reactive security ink comprises a solvent soluble dye and a non-drying vehicle

Methodology Applied

Scientific EffectSolubility: Solvation

Data Source

PatentUS8622436B2Chemically reactive security ink, a method of use of such ink, and security documents incorporating such ink

Publication Date: 2014.01.07 TAYLOR COMMUNICATIONS INC

AI summary

A document uses a chemically reactive security ink to facilitate security, making it more difficult to alter a genuine security document. The chemically reactive security ink masks a warning word or message on a security document. The hidden warning word or message is revealed when the document is subjected to chemical washing.