Talc-Exposed Sliding Layer for Abrasion-Resistant Image Fixing
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Solution Overview
Problem
Existing sliding members in image forming apparatuses face challenges with abrasion resistance due to the use of fluororesins, which are subject to ecological and human toxicity regulations, necessitating a replacement with a more durable and environmentally friendly material.
Innovation Solution
A sliding member with a sliding layer containing a heat-resistant thermoplastic resin and exposed talc particles, where the talc particles have an average diameter of 0.1 µm to 15 µm, an area proportion of 2% to 10%, and a specific roughness profile, enhancing abrasion resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fluororesin is used in the sliding member, then low friction and good sliding properties are achieved, but ecological and human toxicity issues arise and regulatory compliance becomes problematic
Solution Approach 1:
The patent changes the material composition parameters by replacing fluororesin with a blend of heat-resistant thermoplastic resin and specific fillers (talc, silica, glass fibers) in controlled proportions. This substitution maintains the sliding function while eliminating toxic properties, achieving compliance with environmental regulations without sacrificing operational performance
Solution Approach 2:
The patent employs composite materials by combining heat-resistant thermoplastic resin with multiple filler types (talc particles, silica particles, glass fibers) in specific ratios. This composite structure replicates the low-friction characteristics of fluororesin while providing non-toxic, environmentally compliant material properties
2Ease of operation
If fluororesin is used in the sliding member, then good sliding performance is maintained, but abrasion resistance deteriorates
Solution Approach 1:
The patent creates a composite material system where heat-resistant thermoplastic resin is combined with abrasive-resistant fillers (talc particles with 0.01-2 μm diameter, silica particles, and glass fibers). This composite structure provides both low-friction sliding performance and enhanced abrasion resistance, overcoming the limitation of fluororesin-based materials
Solution Approach 2:
The patent applies local quality enhancement by incorporating specific filler particles with controlled size distributions into the sliding surface layer. The talc particles (0.01-2 μm) and other fillers are distributed throughout the resin matrix to provide localized abrasion resistance at the sliding interface while maintaining overall low-friction characteristics
3Object-affected harmful factors
If heat-resistant thermoplastic resin is used instead of fluororesin, then environmental compliance is improved, but abrasion resistance may deteriorate
Solution Approach 1:
The patent successfully creates an environmentally compliant composite material by blending heat-resistant thermoplastic resin with abrasive-resistant fillers (talc, silica, glass fibers). This composite provides both non-toxic environmental compliance and superior abrasion resistance, eliminating the trade-off between environmental compliance and durability
Solution Approach 2:
The patent optimizes the compositional parameters of the heat-resistant thermoplastic resin blend, specifically controlling the particle diameter (0.01-2 μm for talc), content ratios (5-50 wt% fillers), and distribution within the resin matrix. These parameter optimizations ensure maximum abrasion resistance while maintaining environmental compliance and sliding performance
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 proposed sliding member exhibits superior abrasion resistance compared to fluororesin-based counterparts, reducing friction and suppressing abrasion powder generation, thus improving durability and compliance with environmental regulations.
Implementation Method 1
the sliding member has a resin layer obtained by blending a heat-resistant resin and an interlayer peeling resistance filler on a sliding surface side in contact with the belt member
Implementation Method 2
the proposed sliding member exhibits superior abrasion resistance compared to fluororesin-based counterparts, reducing friction and suppressing abrasion powder generation
Data Source
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AI summary
A sliding member includes a sliding layer that contains a heat-resistant thermoplastic resin other than a fluororesin and talc particles, in which the talc particles are exposed on a sliding surface, and an average diameter of exposed portions of the talc particles is 0.1 µm or more and 15 µm or less.