Conductive Elastic Layer Chlorine Ion Control
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Solution Overview
Problem
Conductive members with epichlorohydrin rubber-based elastic layers in image forming apparatuses face issues with resistance variation due to uneven distribution of free chlorine ions, leading to charging failures and density unevenness in high-temperature high-humidity environments.
Innovation Solution
A conductive member with a conductive substrate and a conductive elastic layer containing epichlorohydrin rubber, where the amount of free chlorine ions is controlled between 1 μg/g and 80 μg/g to prevent excessive resistance increase or decrease, ensuring stable electron transfer and resistance maintenance across varying environmental conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the amount of free chlorine ions in the conductive elastic layer is increased to improve ionic conduction, then conductivity is enhanced, but resistance increases significantly in high-temperature high-humidity environments causing charging failures
Solution Approach 1:
The patent controls the concentration parameter of free chlorine ions within a specific range (1-80 μg/g) to optimize the balance between ionic conduction and resistance stability. This parameter optimization prevents excessive resistance increase in high-temperature high-humidity environments while maintaining sufficient conductivity for reliable charging operation.
Solution Approach 2:
The conductive elastic layer is formulated as a composite material containing epichlorohydrin rubber combined with conductive agents and controlled free chlorine ion content. This composite structure integrates the elastic properties of the rubber with the conductive properties of the additives, achieving both mechanical flexibility and electrical conductivity while mitigating the harmful effects of chlorine ion distribution.
2Object-affected harmful factors
If the amount of free chlorine ions is decreased to reduce resistance variation, then resistance stability improves, but ionic conduction capability is reduced
Solution Approach 1:
The patent identifies and controls the free chlorine ion concentration within the optimal range of 1-80 μg/g, which is sufficient to provide ionic conduction capability while limiting resistance variation. This precise parameter control ensures that the material maintains both conductivity and stability under varying environmental conditions.
3Strength
If epichlorohydrin rubber is used in the conductive elastic layer to provide elasticity and conductivity, then mechanical flexibility and conductive properties are improved, but uneven distribution of free chlorine ions occurs leading to density unevenness
Solution Approach 1:
The patent optimizes the concentration parameter of free chlorine ions to 1-80 μg/g, which suppresses the uneven distribution effect and prevents density unevenness while maintaining the elasticity and conductivity provided by epichlorohydrin rubber.
Solution Approach 2:
The conductive elastic layer is designed as a composite material system where epichlorohydrin rubber provides the elastic matrix and conductive network, while the controlled free chlorine ion content (1-80 μg/g) ensures uniform distribution and prevents density variations, achieving both mechanical and electrical performance with manufacturing precision.
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 controlled amount of free chlorine ions in the conductive elastic layer prevents significant resistance changes, reducing the occurrence of charging failures and density unevenness, while maintaining sufficient conductivity, even in high-temperature high-humidity environments.
Implementation Method 1
a conductive elastic layer disposed on the conductive substrate and exhibiting ionic conduction
Data Source
AI summary
A conductive member includes a conductive substrate; and a conductive elastic layer disposed on the conductive substrate and exhibiting ionic conduction. The conductive elastic layer contains an elastic material containing epichlorohydrin rubber, and the amount of free chlorine ions in the conductive elastic layer is 1 μg/g or more and 80 μg/g or less.