Layered Heat-Transfer Portion for Abrasion Resistance and Heat Conductivity
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Solution Overview
Problem
Existing image forming apparatuses face issues with abrasion and temperature distribution variations in the heat-transfer portions, leading to reduced image quality and increased manufacturing costs due to limited material choices for improving both abrasion resistance and heat conductivity.
Innovation Solution
The heat-transfer portion is designed with a multi-layered structure comprising a base material portion, a first layer with high abrasion resistance, and a second layer with high heat conductivity, formed through electrolytic and electroless plating methods, enhancing both properties without material limitations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single material is used for the heat-transfer portion, then manufacturing is simple, but both abrasion resistance and heat conductivity cannot be simultaneously optimized
Solution Approach 1:
The heat-transfer portion is constructed as a composite structure with a base material layer and a surface layer. The base material layer provides heat conductivity, while the surface layer provides abrasion resistance. This composite structure allows each layer to be optimized for its specific function, resolving the contradiction between abrasion resistance and structural simplicity.
2Reliability
If a single material is used for the heat-transfer portion, then manufacturing is simple, but heat conductivity cannot be sufficiently improved
Solution Approach 1:
The base material layer is specifically designed with high heat conductivity to efficiently transfer thermal energy from the heater to the medium. By separating the heat conduction function into a dedicated layer, the overall heat conductivity is improved without requiring the entire structure to be made of high-performance materials, thus managing complexity.
3Reliability
If a single material is used for the heat-transfer portion, then manufacturing is simple, but abrasion resistance deteriorates
Solution Approach 1:
The surface layer is made from a material with superior abrasion resistance properties and is applied only where contact with the medium occurs. This localized application of specialized material improves abrasion resistance at the contact surface while keeping the overall manufacturing process relatively simple through standardized coating or lamination techniques.
4Reliability
If high-performance materials are used throughout the heat-transfer portion, then heat conductivity improves, but manufacturing cost increases
Solution Approach 1:
High heat conductivity material is concentrated in the base material layer where thermal conduction is most critical, while the surface layer uses a different material optimized for abrasion resistance. This localized optimization ensures that expensive high-performance materials are used only where they provide the most benefit, reducing overall manufacturing cost while maintaining necessary heat conductivity.
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
This configuration improves abrasion resistance and heat conductivity, maintaining consistent temperature distribution and image quality while reducing manufacturing costs.
Implementation Method 1
transmit thermal energy supplied from the heater to the medium
Implementation Method 2
formed through electrolytic and electroless plating methods
Implementation Method 3
formed through electrolytic and electroless plating methods
Data Source
AI summary
A drying apparatus includes a heater and a heat-transfer portion. The heat-transfer portion comes into contact with a second surface of a belt-like medium to transmit thermal energy supplied from the heater to the medium, the second surface being a surface on a back side of a first surface of the medium onto which ink is ejected. Further, the heat-transfer portion includes a base material portion, a first layer portion, and a second layer portion. The base material portion is provided closer to an opposing surface that opposes the heater than a contact surface that comes into contact with the medium. The first layer portion forms the contact surface and has higher abrasion resistance than the base material portion. The second layer portion is provided between the first layer portion and the base material portion and has higher heat conductivity than the base material portion.