Conductive Roller Elastic Foam Image Parallelism
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Solution Overview
Problem
Conductive rollers with elastic layers of high Young's modulus (>150 kPa) struggle to maintain image parallelism when transferring images to recording media, as their high hardness limits the adjustment of pressing force, leading to insufficient correction of image distortion.
Innovation Solution
A conductive roller design featuring a cylindrical elastic foam layer with a Young's modulus of 150 kPa or less, allowing for easier adjustment of image parallelism by incorporating a conductive covering layer and a layered structure that includes an intermediate and surface layer to enhance conductivity and resistance properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If an elastic layer with high Young's modulus (>150 kPa) is used in the conductive roller, then the structural strength and stability are improved, but the ability to adjust pressing force and correct image distortion deteriorates
Solution Approach 1:
The conductive roller is divided into multiple functional layers: a support member providing structural strength, an elastic layer with controlled Young's modulus (≤150 kPa) for pressing force adjustment, and an outer layer for image transfer. This segmentation allows each layer to independently fulfill its function without compromising others.
Solution Approach 2:
The Young's modulus of the elastic layer is specifically controlled to be 150 kPa or less, changing the physical parameter of material stiffness to enable sufficient elasticity for pressing force adjustment while maintaining overall roller strength through the layered structure.
2Stability of the object's composition
If an elastic layer with high Young's modulus (>150 kPa) is used, then the roller maintains its shape better, but the parallelism of transferred images cannot be easily increased
Solution Approach 1:
The roller structure is segmented into a rigid support member for shape stability and a compliant elastic layer for image parallelism adjustment. This allows the hard shell to maintain overall geometry while the soft inner layer adapts to correct image distortion.
Solution Approach 2:
The conductive roller uses a composite structure combining materials with different mechanical properties - a rigid support member (metal or hard plastic) for shape stability and a soft elastic material (rubber or elastomer with Young's modulus ≤150 kPa) for pressing force control and image parallelism correction.
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 conductive roller effectively increases the parallelism of transferred images by allowing for more precise adjustment of the pressing force, improving image transfer quality and reliability.
Implementation Method 1
the elastic layer includes a cylindrical elastic foam and has a Young's modulus of 150 kPa or less
Data Source
AI summary
A conductive roller includes a support member, an elastic layer disposed on an outer peripheral surface of the support member, and an outer layer disposed on an outer peripheral surface of the elastic layer. The elastic layer includes a cylindrical elastic foam and has a Young□s modulus of 150 kPa or less.