Receptive Solution Anion Ratio for Inkjet Stability
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Solution Overview
Problem
The storage stability of receptive solutions used in ink-jet recording is compromised due to the interaction between polyvalent metal salts and resin emulsions, leading to increased viscosity and nozzle clogging, which affects image quality and ejection stability.
Innovation Solution
A receptive solution is formulated with polyvalent metal salts, a water-soluble solvent, and a surfactant, where the anions have an OV/IV value ratio of 0.25 to 1.30 and the surfactant has an HLB value of 9 to 19, preventing adsorption of anions onto the resin emulsion, thereby improving storage and ejection stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If polyvalent metal salts are contained in the receptive solution to improve image quality, then image quality is improved, but viscosity increases and storage stability deteriorates
Solution Approach 1:
The patent changes the chemical parameters of the anions by specifying an OV/IV value ratio between 0.25 and 1.30. This parameter change modifies the interaction between anions and resin emulsion, preventing excessive adsorption that would increase viscosity and improve storage stability while maintaining image quality enhancement.
Solution Approach 2:
The patent creates a composite system by carefully selecting the combination of polyvalent metal salts with specific anion characteristics (OV/IV ratio) and resin emulsions. This composite approach balances the competing requirements of image quality improvement through metal salt interaction and storage stability through controlled anion-resin interaction.
2Manufacturing precision
If polyvalent metal salts are contained in the receptive solution to improve image quality, then image quality is improved, but nozzle clogging occurs due to precipitation
Solution Approach 1:
The patent modifies the chemical parameters of the anions (OV/IV value ratio of 0.25-1.30) to control their interaction with resin emulsion. This parameter optimization prevents excessive adsorption and precipitation that would cause nozzle clogging, while maintaining the image quality improvement function of polyvalent metal salts.
Solution Approach 2:
The anions act as intermediaries between the polyvalent metal salts and the resin emulsion. By selecting anions with specific OV/IV ratios, the patent mediates the interaction to prevent direct precipitation of metal salts that would cause nozzle clogging, while still allowing image quality enhancement to occur.
3Stability of the object's composition
If a resin emulsion is contained in the receptive solution to enhance storage stability, then storage stability is improved, but anion adsorption onto resin increases viscosity
Solution Approach 1:
The patent optimizes the anion parameters (OV/IV value ratio between 0.25 and 1.30) to control the strength of interaction with resin emulsion. This parameter adjustment ensures sufficient adsorption to improve storage stability by preventing metal salt precipitation, while limiting excessive adsorption that would increase viscosity and hinder ejection.
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 solution enhances storage stability and ejection stability by preventing anion adsorption onto the resin emulsion, reducing viscosity and nozzle clogging, and maintaining image quality during ink-jet printing.
Implementation Method 1
a surfactant in which a resin emulsion is contained as the resin, the polyvalent metal salts include ions of a polyvalent metal and anions of an organic substance
Implementation Method 2
based on the relationship between the anions of polyvalent metal salts and resin in the receptive solution, viscosity of the receptive solution increases and storage stability of the receptive solution deteriorates
Data Source
AI summary
To proved a receiving solution which has improved storage stability. A receiving solution for inkjet recording inks, which contains a polyvalent metal salt, a water-soluble solvent, a resin and a surfactant. This receiving solution for inkjet recording inks contains a resin emulsion as the resin; the polyvalent metal salt contains ions of a polyvalent metal and anions of an organic material; the (organic value)/(inorganic value) ratio, namely the OV/IV value of the anions of the organic material is 0.25 or more but less than 1.30; the HLB value of the surfactant is from 9 to 19 (inclusive); and the surfactant is represented by general formula (1). (In the formula, R1 represents an optionally branched alkylene group having 1 to 5 carbon atoms (inclusive); R2 represents a hydrogen atom or an optionally branched alkyl group having 1 to 3 carbon atoms (inclusive); R3 represents a hydrogen atom or an optionally branched alkyl group having 1 to 3 carbon atoms (inclusive); A represents 2 or 3; X represents ethylene oxide and/or propylene oxide; and n represents an integer.)