Toner Adhesion to PET Coated Paper via Polyester Resin Optimization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Toner base particles with styrene acrylic resin have insufficient adhesiveness to PET coated paper due to material incompatibility and poor interfacial adhesion, and excessive use of amorphous polyester resin increases costs and degrades storage stability.
Innovation Solution
A toner with a binder resin composition that includes a predetermined amount of polyester resin, where the ratio of polyester resin contact area to total contact area with PET coated paper is within a specific range, ensuring adequate adhesiveness and cost-effectiveness while maintaining storage stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If styrene acrylic resin is used as binder resin, then the toner has good storage stability, but the adhesiveness to PET coated paper is insufficient
Solution Approach 1:
The invention uses a composite binder resin system comprising both styrene acrylic resin and polyester resin. The styrene acrylic resin provides storage stability while the polyester resin component (at 2-20 mass% of total binder resin) provides compatibility with PET coated paper, achieving both requirements through material composition
2Strength
If amorphous polyester resin is used to improve adhesiveness to PET coated paper, then the adhesiveness is enhanced, but storage stability degrades and costs increase
Solution Approach 1:
The invention optimizes the quantity parameter of polyester resin content within the specific range of 2-20 mass% of total binder resin. This parameter optimization ensures sufficient adhesiveness to PET coated paper while preventing excessive moisture absorption that would degrade storage stability
3Strength
If amorphous polyester resin is used to improve adhesiveness to PET coated paper, then the adhesiveness is enhanced, but manufacturing costs increase
Solution Approach 1:
The invention optimizes the polyester resin content parameter within 2-20 mass% of total binder resin, finding the cost-effective range that provides sufficient adhesiveness without excessive material consumption. This optimized parameter range reduces manufacturing costs compared to high polyester resin formulations
4Strength
If the shell coverage with amorphous polyester resin is excessively high, then the adhesiveness to printing media is improved, but the cost increases and storage stability degrades
Solution Approach 1:
The invention applies polyester resin locally at the interface between toner and PET coated paper through optimized binder resin composition, rather than excessive shell coverage. This localized application provides sufficient adhesiveness while reducing overall polyester resin content to maintain storage stability
Solution Approach 2:
The invention changes the parameter of polyester resin content from excessive levels to an optimized range of 2-20 mass% of total binder resin, achieving the necessary adhesiveness with minimal material while preventing storage stability degradation
Data Source
AI summary
A toner comprising at least a binder resin,the binder resin including at least a polyester resin,wherein a content of the polyester resin is 2.5% by mass or more of a total mass of the toner, andwhen a total length of a portion of a cross section of a printed article produced by fixing the toner to a PET coated paper sheet under printing conditions including a printing temperature of 175° C., a printing speed of 16 ppm, and a printing density of 0.8 mg/cm2, the portion in which the polyester resin is in contact with the PET coated paper sheet, is defined as A, and a total length of a portion of the cross section, the portion in which the toner is in contact with the PET coated paper sheet, is defined as B, A and B satisfy Formula (1) below.0.05≤A/B≤0.55(1)