Fluoroelastomer Intermediate Transfer Belt with Core-Shell Component
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Solution Overview
Problem
Existing intermediate transfer members in electrostatographic printing machines face issues with incomplete toner transfer due to charge exchange, leading to low resolution and image deterioration, and are sensitive to humidity and temperature changes, affecting resistivity and operational latitude.
Innovation Solution
A weldable intermediate transfer belt with a core-shell component comprising a metal oxide core and a hydrophobically treated silica shell dispersed in a fluoroelastomer, which maintains consistent resistivity and prevents charge exchange, ensuring high transfer efficiency and stability across varying conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional intermediate transfer members are used, then toner transfer can occur, but charge exchange leads to incomplete transfer and image deterioration
Solution Approach 1:
The patent changes the surface energy parameters of the intermediate transfer member by applying hydrophobic coatings and using low surface energy materials. This parameter change prevents charge exchange between toner and the transfer member surface, ensuring complete toner transfer without image deterioration while maintaining reliable image transfer functionality.
Solution Approach 2:
The patent employs composite material structures combining multiple layers with different properties: conductive layers for charge control, hydrophobic coating layers for preventing charge exchange, and low surface energy materials for complete toner release. This composite approach resolves the contradiction by integrating multiple functional properties in a single transfer member system.
2Adaptability or versatility
If intermediate transfer members operate in varying environmental conditions, then flexibility is improved, but resistivity changes affect operational stability
Solution Approach 1:
The patent incorporates materials and coatings specifically selected for their low hygroscopicity and minimal resistivity change across humidity and temperature variations. By changing the material parameters to be environmentally inert, the transfer member maintains stable resistivity while adapting to various operating conditions, resolving the contradiction between adaptability and stability.
3Productivity
If hydrophobic surfaces are applied to prevent charge exchange, then transfer efficiency improves, but surface treatment complexity increases
Solution Approach 1:
The patent applies hydrophobic coatings and low surface energy treatments during the manufacturing process rather than requiring post-manufacturing treatment. This preliminary action integrates the complexity into production, simplifying field application while achieving high transfer efficiency through pre-established hydrophobic surfaces that prevent charge exchange.
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 achieves high toner transfer efficiency, maintains image quality, and provides dimensional and electrical stability, reducing the impact of humidity and temperature changes on resistivity, thus enhancing the operational latitude of the printing process.
Implementation Method 1
a core-shell component comprised of a metal oxide core and a hydrophobically treated silica shell dispersed in a fluoroelastomer, which maintains consistent resistivity and prevents charge exchange
Implementation Method 2
excellent electrical and dimensional stability primarily because of the members water repelling characteristics
Data Source
AI summary
An intermediate transfer member that includes a core shell component wherein the core is, for example, comprised of a metal oxide, and the shell is comprised of a silica, which shell contains or includes a hydrophobic agent, and where the core shell is dispersed in or mixed with a fluoroelastomer.