Ink Jet Ink Composition for Plastic Media Adhesion and Odor Reduction
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Solution Overview
Problem
Existing ink jet ink compositions exhibit insufficient adhesion to plastic recording media and have odor issues due to the presence of aromatic group-containing monomers.
Innovation Solution
An ink jet ink composition comprising a monomer with less than 35% aromatic group-containing monomer and a resin with hydroxy or carboxy groups, or specific structural units, which improves adhesion to non-absorbent recording media while reducing odor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If aromatic group-containing monomers are used in the ink composition, then the coating provides good adhesion and processability, but the odor of the coating increases
Solution Approach 1:
The patent changes the chemical composition parameters by limiting aromatic group-containing monomers to less than 35 mass% and introducing specific resins with hydroxy/carboxy groups or ketone structural units, which reduces odor while maintaining adhesion through alternative chemical mechanisms
Solution Approach 2:
The patent introduces resins with hydroxy groups, carboxy groups, or ketone structural units as intermediary substances that mediate adhesion to plastic substrates, replacing the need for high concentrations of aromatic monomers and thereby reducing odor
2Ease of manufacture
If conventional ink compositions are used on plastic recording media, then the formulation is simple, but the adhesion between coating and recording medium is insufficient
Solution Approach 1:
The patent modifies the chemical parameters by incorporating resins with specific functional groups (hydroxy, carboxy, ketone) that enhance adhesion to plastic substrates while maintaining a relatively simple two-component formulation structure
Solution Approach 2:
The patent creates a composite ink composition by combining monomers with resins that have specific structural units, forming a composite material system that achieves superior adhesion to plastic recording media compared to conventional single-system formulations
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 composition achieves enhanced adhesion and reduced odor by utilizing resins with polar groups at the interface, ensuring improved attachment to recording media and minimizing aromatic monomer content.
Implementation Method 1
utilizing resins with polar groups at the interface, ensuring improved attachment to recording media
Implementation Method 2
an ejection step of ejecting the ink jet ink composition from an ink jet head and attaching the composition to a non-absorbent recording medium
Implementation Method 3
a curing step of curing the ink jet ink composition on the non-absorbent recording medium
Data Source
AI summary
An ink jet ink composition includes a monomer and a resin. The monomer does not include an aromatic group-containing monomer, or includes an aromatic group-containing monomer in an amount of less than 35 mass % based on the total amount of the ink jet ink composition. The resin includes at least one of an acrylic resin (A) having hydroxy groups or carboxy groups and a resin (B) having one or more structural units selected from the group consisting of predetermined structural units.