Ink Composition Surfactant Ratio for Mist Prevention
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Solution Overview
Problem
Ink jet recording methods face issues with mist formation, foreign matter precipitation, and poor initial filling due to low wettability and surfactant-induced misting, which affect image quality and apparatus reliability.
Innovation Solution
An ink composition containing specific polyoxyalkylene alkyl ether surfactants with a hydroxy group and an aldehyde group, optimized in mass ratio and concentration, to enhance foreign matter solubility, wettability, and prevent mist formation, ensuring stable ink storage and effective initial filling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a surfactant is used to improve initial filling performance and foreign matter solubility, then wettability and solubility are enhanced, but mist formation is facilitated
Solution Approach 1:
The patent changes the chemical parameters of the surfactant by specifying a particular structure with polyethylene oxide and polypropylene oxide units in a specific ratio range (0.2 to 2.0 for the polypropylene oxide portion). This parameter optimization allows the surfactant to provide adequate wettability for initial filling while reducing its tendency to generate mist, thus resolving the contradiction between ease of operation and harmful factors.
2Stability of the object's composition
If a surfactant is used to improve foreign matter solubility, then ink composition stability is enhanced, but mist occurrence is facilitated
Solution Approach 1:
The patent optimizes the molecular structure parameters of the surfactant, specifically the ratio of polypropylene oxide to polyethylene oxide units (0.2 to 2.0), to achieve a balance where the surfactant maintains high foreign matter solubility while minimizing mist generation. This parameter adjustment resolves the contradiction between composition stability and harmful factors.
3Ease of operation
If conventional surfactants are used, then wettability is improved, but mist pollution increases
Solution Approach 1:
The patent modifies the surfactant's molecular parameters by defining a specific structure with controlled ratios of polyethylene oxide and polypropylene oxide units. This parameter change enables the surfactant to maintain effective wettability for proper ink flow and filling while significantly reducing mist pollution, thus resolving the contradiction between ease of operation and harmful factors affecting the recording apparatus.
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 composition effectively prevents misting, improves foreign matter solubility, and ensures reliable initial filling and storage stability, even in compact printer heads, maintaining image quality and apparatus reliability.
Implementation Method 1
the ink composition at least contains a compound A and a compound B as polyoxyalkylene alkyl ether surfactants
Data Source
AI summary
An ink composition at least contains a compound A having a hydroxy group and a compound B having an aldehyde group as polyoxyalkylene alkyl ether surfactants. The mass ratio of the compound B to the compound A is 0.5×10−4 to 30×10−4.