Electrophotographic Photosensitive Member Surface Layer Wear Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electrophotographic photosensitive members face issues with wear resistance and chemical stability, leading to image deletion and defects, particularly under high-temperature and high-humidity conditions, where the chemical change of hole transportable compounds causes blurring of images.
Innovation Solution
Incorporating a polymerized product of a compound with a specific structural formula into the surface layer of the electrophotographic photosensitive member, which is free from amine structures and features a condensed polycyclic aromatic hydrocarbon group, enhancing wear resistance and electrical characteristics while suppressing image deletion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a surface layer with high wear resistance is formed in the electrophotographic photosensitive member, then wear resistance is improved, but chemical stability deteriorates because the surface layer hardly wears and chemical deterioration accumulates on the surface
Solution Approach 1:
The invention changes the chemical composition parameters of the surface layer by incorporating specific additives (fluorine-containing monomers, amine compounds, or siloxane compounds) into the hole transportable compound. This modifies the chemical stability parameter while maintaining wear resistance, allowing the surface layer to resist both mechanical wear and chemical deterioration through compositional adjustment rather than structural change alone.
Solution Approach 2:
The invention creates a composite material system by combining the hole transportable compound with specific additives in the surface layer. The composite structure consists of the base hole transportable compound reinforced with fluorine-containing monomers, amine compounds, or siloxane compounds, achieving synergistic effects where the composite provides both wear resistance and enhanced chemical stability that neither component alone could achieve.
2Reliability
If additives are incorporated into the surface layer to suppress chemical change of the hole transportable compound, then chemical stability is improved, but wear resistance may be compromised
Solution Approach 1:
The invention carefully controls the concentration and type of additives incorporated into the surface layer. By optimizing the amount of fluorine-containing monomer, amine compound, or siloxane compound added to the hole transportable compound, the invention achieves the desired chemical stability enhancement while maintaining sufficient wear resistance. The parameter optimization ensures that the additive concentration is high enough to provide chemical protection but not so high as to compromise the mechanical properties.
3Productivity
If the electrophotographic photosensitive member is used under high-temperature and high-humidity environment, then productivity is maintained, but image quality deteriorates due to image deletion caused by chemical change of the hole transportable compound
Solution Approach 1:
The invention applies preliminary anti-action by incorporating chemical stabilizing additives into the surface layer before the electrophotographic processes begin. The fluorine-containing monomers, amine compounds, or siloxane compounds are pre-incorporated to create a protective chemical environment that prevents oxidation and chemical change of the hole transportable compound during subsequent high-temperature and high-humidity operation, thereby preventing image deletion before it occurs.
Solution Approach 2:
The invention uses a sacrificial surface layer with additives that can be easily replaced. The surface layer containing the hole transportable compound and stabilizing additives is designed to be consumed or degraded under harsh conditions, but the entire photosensitive member can be quickly replaced without affecting productivity. This approach accepts that the surface layer will eventually deteriorate but ensures that the cost and time of replacement is minimal compared to the benefit of continuous operation under challenging environmental conditions.
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 solution provides improved wear resistance, reduced image defects, and enhanced electrical characteristics, effectively preventing image deletion and maintaining image quality even under challenging environmental conditions.
Implementation Method 1
enhancing wear resistance and electrical characteristics
Implementation Method 2
suppressing the chemical change of the hole transportable compound
Data Source
AI summary
Provided is an electrophotographic photosensitive member, including: a support; and a photosensitive layer formed on the support, in which a surface layer of the electrophotographic photosensitive member contains a polymerized product of a compound represented by the following structural formula (1).