Grease Composition for Image Forming Apparatus Resin Compatibility
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Solution Overview
Problem
Conventional grease compositions for image forming apparatuses have high friction coefficients and are not compatible with resin materials, leading to resource and energy inefficiencies and resin deterioration.
Innovation Solution
A grease composition comprising lithium soap as a thickener, synthetic hydrocarbon oil as a base oil, and polyethylene oxide wax as a lubricity improver, specifically designed for use in image forming apparatuses with metal and resin sliding surfaces, optimizing friction reduction and resin compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If conventional grease compositions are used to reduce friction, then the coefficient of friction decreases, but the resin materials deteriorate due to incompatibility
Solution Approach 1:
The patent changes the chemical composition parameters of the grease by selecting specific base oils (synthetic hydrocarbon oils with viscosity 5-30 mm²/s at 40°C) and additives that are chemically compatible with resin materials, thereby reducing friction without causing resin deterioration
Solution Approach 2:
The patent creates a composite grease formulation combining multiple components (thickener, base oil, lubricity improver) that work synergistically to provide both low friction and resin compatibility, effectively resolving the contradiction between friction reduction and material compatibility
2Force
If resins with low friction resistance are used for sliding surfaces, then friction is reduced, but the resins deteriorate upon prolonged contact with incompatible grease
Solution Approach 1:
The patent modifies the grease composition parameters to ensure chemical compatibility with low-friction resin materials, allowing the resins to maintain their low friction resistance property throughout their service life without deterioration
3Use of energy by moving object
If grease composition is optimized for lower friction, then energy efficiency improves, but compatibility with resin materials worsens
Solution Approach 1:
The patent optimizes the grease composition parameters including base oil viscosity (5-30 mm²/s at 40°C), thickener content (5-20 mass%), and lubricity improver content (0.1-10 mass%) to achieve both low friction for energy efficiency and chemical compatibility to prevent resin attack
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 grease composition significantly reduces friction and enhances durability while maintaining compatibility with resin materials, improving the overall performance and longevity of image forming apparatuses.
Implementation Method 1
the lubricity improver is a polyethylene oxide wax
Implementation Method 2
the thickener is a lithium soap
Data Source
AI summary
The invention provides a grease composition for use in an image forming apparatus, containing a thickener, a base oil and a lubricity improver, wherein the thickener is a lithium soap, the base oil is a synthetic hydrocarbon oil, the lubricity improver is a polyethylene oxide wax, and the image forming apparatus is equipped with a sliding member and a member for holding the sliding member which is driven to slide through the holding member via the grease composition, one of the sliding member or the holding member for the sliding member having a sliding surface formed from a metal, and the other having a sliding surface formed from a resin.