Cylindrical Image Transfer Contact Control to Prevent Toner Disturbance
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Solution Overview
Problem
The transfer of a toner image onto a cylindrical object is disrupted due to the impact of a facing unit pressing against the transfer body during transport, causing disturbances in the formed image.
Innovation Solution
An image forming apparatus with a transfer unit and a facing unit that moves together with the object, utilizing a mechanism to bring the facing unit closer to the transfer unit in accordance with its movement, ensuring stable contact and minimizing image disturbances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the facing unit moves to the pressurization position to press the transfer material against the transfer body, then the image transfer is achieved, but the impact of entry causes disturbance in the toner image
Solution Approach 1:
The patent applies beforehand cushioning by introducing a buffer mechanism between the facing unit and the transfer body. The facing unit is designed to gradually approach the transfer body rather than making sudden contact, cushioning the impact before the actual pressurization occurs. This prevents the harmful impact disturbance while maintaining the necessary pressure for image transfer.
Solution Approach 2:
The patent implements dynamics by making the facing unit movable rather than fixed. The facing unit can dynamically adjust its position to approach the transfer body gradually, control the timing and magnitude of contact, and maintain optimal pressure during the transfer process. This dynamic adjustment eliminates the harmful impact while preserving the transfer function.
2Stability of the object's composition
If the facing unit presses against the transfer body during transport, then stable contact is achieved, but the toner image formation is disrupted due to entry impact
Solution Approach 1:
The buffer mechanism cushions the facing unit's approach to the transfer body, preventing sudden impacts that would disrupt toner image formation. This cushioning effect maintains contact stability while protecting the delicate image formation process from harmful disturbances.
Solution Approach 2:
The facing unit performs preliminary action by approaching the transfer body gradually before actual contact. This preliminary approach allows the system to prepare for contact, reduce impact velocity, and establish stable contact conditions without causing harmful disturbances to the toner image.
Data Source
AI summary
An image forming apparatus includes a transfer unit that comes into contact with an object to transfer an image to the object, a facing unit that moves together with the object in a transport direction of the object to bring the object into contact with the transfer unit, and a mechanism that brings the facing unit closer to the transfer unit in accordance with movement of the facing unit in the transport to bring the object into contact with the transfer unit and then further brings the facing unit and the transfer unit closer to each other.