Electrostatic Ink Co-Polymer Resin for Low Background Contamination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electrostatic printing processes face challenges in achieving high-quality images with low background contamination and optimal resin-pigment interaction, leading to issues with viscosity and metallic appearance in electrostatic ink compositions.
Innovation Solution
The development of an electrostatic ink composition comprising a resin co-polymer formed from an alkylene monomer, an acrylic ester monomer, and a maleic anhydride monomer, with the acrylic ester monomer constituting at least 8 wt% of the co-polymer, which improves the interaction with conductive pigments and reduces background contamination by optimizing the resin-pigment contact and charging properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional resins are used in electrostatic ink compositions, then the ink can be formulated and applied, but background contamination increases and metallic appearance deteriorates
Solution Approach 1:
The patent changes the chemical composition parameters of the resin by specifying a co-polymer with at least 8 wt% acrylic ester monomer content. This parameter change optimizes the resin's interaction with conductive pigments, reduces background contamination, and improves metallic appearance while maintaining proper viscosity and charging properties
Solution Approach 2:
The patent uses a composite resin system formed from multiple monomers (alkylene, acrylic ester, and maleic anhydride) to achieve synergistic effects. The combination of these monomers creates a resin that simultaneously provides good pigment interaction, low background contamination, and proper electrostatic properties that single-component resins cannot achieve
2Manufacturing precision
If resin concentration is increased to improve film formation, then film quality improves, but viscosity increases causing application problems
Solution Approach 1:
The patent changes the resin's molecular structure parameters by specifying a co-polymer composition with particular monomer ratios (at least 8 wt% acrylic ester). This structural modification allows the resin to form quality films at lower concentrations, reducing viscosity while maintaining or improving film formation characteristics
3Ease of manufacture
If traditional ink compositions are used, then formulation is simple, but metallic appearance and wetting characteristics are insufficient
Solution Approach 1:
The patent employs a composite co-polymer resin system combining alkylene, acrylic ester, and maleic anhydride monomers. This composite approach enhances metallic appearance and wetting characteristics through the synergistic interaction of different monomer units, while the formulation remains practically simple with straightforward synthesis and application procedures
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 composition results in enhanced film formation, reduced background contamination, and improved metallic appearance in printed images, with better wetting and charging characteristics, leading to superior print quality and reduced viscosity issues.
Implementation Method 1
The charged toner particles adhere to the image areas of the latent image while the background areas remain clean
Data Source
AI summary
Herein is disclosed an electrostatic ink composition comprising a resin and a conductive pigment, wherein the resin comprises a co-polymer formed from an alkylene monomer, an acrylic ester monomer and a maleic anhydride monomer, wherein, in some examples, the acrylic ester monomer constitutes at least about 8 wt % of the co-polymer. Herein is also disclosed a print substrate having printed thereon an electrostatic ink comprising a resin and a conductive pigment, wherein the resin comprises a co-polymer formed from an alkylene monomer, an acrylic ester monomer and a maleic anhydride monomer, wherein, in some examples, the acrylic ester monomer constitutes at least about 8 wt % of the co-polymer.