Breathable Carrier Belt with Decompression for Image Transfer
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Solution Overview
Problem
Existing carrier devices in image-forming systems face challenges in maintaining optimal pressure reduction and breathability, leading to issues with durability, carrying power, and toner image quality due to limitations in the design of carrier belts.
Innovation Solution
A carrier device featuring a circular belt made of breathable nonwoven fabric, hung on rolls with a decompression unit to reduce pressure and maintain a suitable hanging rate and friction coefficient, ensuring effective rotation and toner image transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a carrier belt is used in image-forming devices, then image transfer is enabled, but the belt may disengage from rolls or damage toner images due to insufficient pressure control and durability
Solution Approach 1:
The patent applies parameter changes by controlling the pressure reduction level in the vacuum chamber and optimizing the hanging rate of the carrier belt on the rolls. By adjusting these parameters, the belt maintains reliable engagement while preventing disengagement and toner image damage during operation.
Solution Approach 2:
The patent uses a vacuum chamber with pressure reduction capabilities to control the carrier belt operation. The pneumatic environment enables precise pressure control, which prevents belt disengagement from rolls and protects toner images from damage during the image transfer process.
2Force
If pressure reduction is applied to the carrier belt, then carrying power is improved, but breathability and durability may be compromised
Solution Approach 1:
The patent optimizes the pressure reduction level within a specific range to maintain sufficient carrying power while preserving belt breathability and durability. By controlling the vacuum degree parameter, the system achieves the right balance between these competing requirements.
Solution Approach 2:
The patent applies partial pressure reduction rather than complete vacuum, which is sufficient to improve carrying power without excessively compromising breathability and durability. This partial action approach achieves the needed effect while minimizing negative impacts.
3Productivity
If the carrier belt rotates at high speed, then productivity is improved, but stability and image quality may deteriorate
Solution Approach 1:
The vacuum chamber provides a controlled pneumatic environment that stabilizes the carrier belt during high-speed rotation. The pressure control mechanism ensures stable operation and consistent image quality even at increased transfer speeds, resolving the trade-off between productivity and stability.
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 enhances the durability and carrying power of the carrier belts while preventing accidents like disengagement or toner image damage, ensuring efficient image transfer and fixing processes.
Implementation Method 1
a decompression unit that reduces pressure in an area surrounded by the belt
Implementation Method 2
a circular belt made of a breathable nonwoven fabric
Data Source
AI summary
A carrier device includes: a circular belt made of a breathable nonwoven fabric; plural rolls on which the belt is hung so that the rolls contact a surface of an inner circumference of the belt, that causes the belt to rotate; and a decompression unit that reduces pressure in an area surrounded by the belt.