Intermediate Transfer Member Ceramer Layer Friction Stability
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Solution Overview
Problem
In electrophotographic processes, the transfer of multicolor toner images to a receiver member is inefficient due to the complexity of sequential transfers, leading to reduced output speed and potential image defects like mis-registration and slippage, particularly because existing intermediate transfer members experience reduced frictional coefficients over time due to fuser release agents, affecting registration and reliability.
Innovation Solution
An intermediate transfer member comprising a substrate with a cured static dissipative silicone compliant layer formed from UV light curable siloxane and a UV curing catalyst, and an outermost surface ceramer layer, which maintains high frictional properties and toner release efficiency across varying humidity conditions, ensuring stable image transfer and registration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a transport web is used to facilitate registration of images, then friction is required to drive image forming modules, but fuser release agents on the receiver member transport web reduce friction with increased usage, resulting in slippage and image defects
Solution Approach 1:
The patent changes the material composition of the intermediate transfer member surface from conventional polyurethane to silicone rubber, which fundamentally alters the friction parameters. Silicone rubber maintains stable friction coefficients across varying conditions and does not degrade like polyurethane, preventing slippage while ensuring consistent image registration throughout the component's service life
Solution Approach 2:
The patent uses a composite structure combining silicone rubber with conductive particles (such as carbon black or metal oxides) to create an intermediate transfer member that simultaneously provides stable friction properties and electrical conductivity. This composite material resolves the contradiction by maintaining both mechanical friction stability and electrical functionality without degradation
2Manufacturing precision
If sequential transfers are used to transfer multicolor toner images, then separate color images can be formed, but the output speed is reduced due to the number of sequential transfers required
Solution Approach 1:
The patent merges multiple color transfer operations into a single simultaneous transfer process. By using an intermediate transfer member with specific surface properties (silicone rubber composition), the system can transfer multiple color images onto a single receiver member in one operation, eliminating sequential transfers and dramatically increasing output speed while maintaining color separation precision
Solution Approach 2:
The patent introduces an intermediate transfer member as a mediator between the photoreceptor and receiver member. This intermediate member with silicone rubber surface properties enables efficient transfer of multiple color images simultaneously, acting as a mediator that facilitates high-speed multicolor transfer without the degradation issues of conventional materials
3Ease of operation
If conventional polyurethane compliant layers are used, then toner transfer can be achieved, but frictional coefficients are reduced over time due to fuser release agents, affecting registration and reliability
Solution Approach 1:
The patent changes the material parameter from polyurethane to silicone rubber, which has fundamentally different wear and friction characteristics. Silicone rubber does not degrade its friction properties over time like polyurethane, maintaining stable frictional coefficients throughout the component's operational life and preventing the friction reduction that leads to registration defects
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 intermediate transfer member enhances the efficiency and reliability of multicolor image transfer by maintaining consistent frictional properties and toner release characteristics, reducing image defects and improving the overall speed and accuracy of electrophotographic reproduction processes.
Implementation Method 1
a cured static dissipative silicone compliant layer formed from a UV light curable siloxane and a UV curing catalyst
Implementation Method 2
a cured static dissipative silicone compliant layer
Implementation Method 3
maintains high frictional properties and toner release efficiency
Data Source
AI summary
An intermediate transfer member for electrophotography includes a substrate, a cured static dissipative silicone compliant layer comprising crosslinked silicone polymer formed from a UV light curable siloxane and a UV curing catalyst, and an outermost surface ceramer layer. This intermediate transfer member can be incorporated into a suitable imaging apparatus for forming a toned image on a receiver element.