Charge Control Ink with Trifluoromethylsulfonyl Salt
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Solution Overview
Problem
Existing inks for ink-jet printers of a charge control type face challenges in achieving both high adhesion and abrasion resistance while minimizing the addition rate of conductive agents to maintain low resistance.
Innovation Solution
The ink composition includes a resin, a pigment, a conductive agent with a salt structure that generates an anion with a trifluoromethylsulfonyl group and a cation that is a quaternary ammonium cation or has an unsaturated heterocyclic structure, all dissolved in a non-aqueous solvent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the addition rate of conductive agent is reduced, then the solubility problem of inorganic conductive agents is avoided, but achieving low resistance becomes difficult
Solution Approach 1:
The patent changes the chemical parameters of the conductive agent by selecting organic substances with specific salt structures (trifluoromethylsulfonyl anion with quaternary ammonium or unsaturated heterocyclic cations) that have high solubility in non-aqueous solvents and resins, while maintaining low resistance properties
Solution Approach 2:
The patent creates a composite conductive system by combining specific anions (trifluoromethylsulfonyl) with specific cations (quaternary ammonium or unsaturated heterocyclic) to achieve synergistic effects of solubility and conductivity
2Illumination intensity
If the rate of colorant is increased, then visibility is ensured, but the rate of resin decreases leading to decreased adhesion and abrasion resistance
Solution Approach 1:
The patent optimizes the concentration parameters of each component, establishing a balanced formulation where colorant, resin, and conductive agent coexist without mutual interference, maintaining both visibility and mechanical strength
3Strength
If the addition rate of resin is increased, then adhesion and abrasion resistance are improved, but viscosity increases making printing difficult
Solution Approach 1:
The patent adjusts the viscosity parameter by selecting appropriate resin types and controlling resin concentration, while using non-aqueous solvents to maintain optimal flow properties for printing while ensuring sufficient adhesion and abrasion resistance
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
This approach allows for a reduced addition rate of the conductive agent while maintaining low resistance and ensuring good printing quality with high adhesion and abrasion resistance.
Implementation Method 1
the conductive agent has a salt structure that generates an anion and a cation in the non-aqueous solvent
Implementation Method 2
the conductive agent has a function to improve the conductivity of the ink and to reduce the resistance thereof
Implementation Method 3
ink particles ejected from a nozzle are charged and deflected by a deflection electrode, so that the ink is sprayed on a print surface
Data Source
AI summary
The purpose of the present invention is to provide an ink for ink-jet printers, the ink being able to be reduced in the content of an electroconductive agent and having low resistance. The ink for ink-jet printers of a charge control type according to the present invention, which is provided in order to overcome the problem, is characterized by comprising a resin, a pigment, an electroconductive agent, and a nonaqueous solvent, the electroconductive agent having a salt structure which generates an anion and a cation in the nonaqueous solvent, the anion having a trifluoromethylsulfonyl group and the cation being a quaternary ammonium cation or having an unsaturated heterocyclic structure.