Single-Layer Photoreceptor Binder Network for Humid Corrosion
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Solution Overview
Problem
Existing positively chargeable electrophotographic photoreceptors suffer from corrosion-induced color spot generation and wear issues due to electrical singular points under high temperature and humidity conditions, leading to leakage current and degradation of the photosensitive layer.
Innovation Solution
A positively chargeable electrophotographic photoreceptor with a single layer-type photosensitive layer containing a binder resin composed of resin A with an elastic deformation rate of 53.0% or more and resin B with an elastic deformation rate difference of 12% to 17% relative to resin A, forming an interpenetrating polymer network structure to enhance durability and reduce corrosion-induced color spot generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single layer-type photosensitive layer contains resin A with high elastic deformation rate (53.0% or more) and resin B with elastic deformation rate difference of 12% to 17%, then wear resistance and corrosion resistance are improved, but color spot generation occurs under high temperature and humidity conditions
Solution Approach 1:
The patent precisely controls the elastic deformation rate parameters of resin A (53.0% or more) and resin B (elastic deformation rate difference of 12% to 17% relative to resin A) to optimize the balance between wear resistance and corrosion resistance, reducing color spot generation while maintaining durability
Solution Approach 2:
The photosensitive layer uses a composite binder resin system combining resin A and resin B with specific elastic deformation rate relationships, creating an interpenetrating polymer network structure that simultaneously provides wear resistance and corrosion resistance without causing color spot generation
2Ease of manufacture
If the photosensitive layer uses conventional binder resins, then manufacturing is easier, but corrosion-induced color spot generation and wear issues occur
Solution Approach 1:
The patent specifies precise elastic deformation rate parameters for resin A (53.0% or more) and resin B (elastic deformation rate difference of 12% to 17% relative to resin A), transforming conventional binder resin selection into a parameter-controlled process that maintains ease of manufacture while dramatically improving corrosion resistance and eliminating color spot generation
3Productivity
If the photoreceptor operates under high temperature and humidity conditions, then productivity is maintained, but leakage current and degradation of the photosensitive layer occur
Solution Approach 1:
The interpenetrating polymer network structure formed by resin A and resin B with specific elastic deformation rate relationships creates a composite material that maintains photosensitive layer stability under high temperature and humidity conditions, preventing leakage current and degradation while allowing continuous operation and maintaining productivity
Data Source
AI summary
A positively chargeable electrophotographic photoreceptor includes a single layer-type photosensitive layer that contains a hole transport material, an electron transport material, a charge generation material, and a binder resin, in which the binder resin contains a resin A having an elastic deformation rate of 53.0% or more and a resin B having an elastic deformation rate difference of 12% or more and 17% or less with respect to the resin A.