Toner Set Resolving Adhesion and Color Forming Contradiction
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Solution Overview
Problem
Existing toner sets for electrostatic image development face challenges in achieving high color forming characteristics and preventing color image peeling, particularly when using a combination of white and color toners with different binder resins, where compatibility issues lead to low adhesion and excessive mixing.
Innovation Solution
A toner set comprising a white toner with polyester resin and a non-white color toner with a vinyl resin, where the mass ratio of polyester resin to vinyl resin in the color toner particles is between 0.7 and 10, ensuring moderate compatibility and adhesion between the toner particles, thereby improving color forming characteristics and preventing peeling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a white toner with polyester resin and a color toner with vinyl resin are used together, then color forming characteristics are improved, but adhesion between toner particles deteriorates
Solution Approach 1:
The patent applies parameter changes by adjusting the mass ratio of polyester resin to vinyl resin in the color toner particles to fall within a specific range (0.7 ≤ C ≤ 10). This quantitative control of resin composition optimizes both color forming characteristics and adhesion between toner particles, resolving the contradiction between image quality and bonding strength.
Solution Approach 2:
The patent uses composite materials by combining polyester resin and vinyl resin in the color toner particles with a controlled mass ratio. This composite resin system leverages the advantages of both resins while mitigating their individual drawbacks, achieving both good color forming characteristics and adequate adhesion.
2Manufacturing precision
If polyester resin and vinyl resin are combined in color toner particles, then color forming characteristics improve, but compatibility between toner particles deteriorates
Solution Approach 1:
The patent resolves the compatibility issue by changing the compositional parameters of the color toner particles, specifically controlling the mass ratio of polyester resin to vinyl resin within the range 0.7 ≤ C ≤ 10. This parameter optimization ensures moderate compatibility between different toner particle types while maintaining excellent color forming characteristics.
3Manufacturing precision
If resin composition in toner particles is optimized for color forming, then image quality improves, but adhesion and compatibility deteriorate
Solution Approach 1:
The patent achieves a balanced optimization by adjusting the mass ratio parameter of polyester resin to vinyl resin in the color toner particles to fall within 0.7 ≤ C ≤ 10. This parameter control simultaneously improves image quality while maintaining reliable adhesion and compatibility between toner particles.
Solution Approach 2:
The patent employs composite resin materials with controlled composition ratios to achieve multiple objectives simultaneously. The composite structure of polyester and vinyl resins in specific proportions provides both excellent color forming characteristics for image quality and adequate adhesion/compatibility for reliability.
Data Source
AI summary
A toner set for electrostatic image development includes a white toner including white toner particles containing a polyester resin and a white colorant, and a non-white color toner including color toner particles containing a vinyl resin, a polyester resin, and a color colorant, in which a mass ratio C of the polyester resin to the vinyl resin in the color toner particles is 0.7 or more and 10 or less.