Securing Device for Photoconductor and Developing Roller Spacing
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Solution Overview
Problem
Existing image forming apparatuses face variations in the space between the developing roller and the photoconductor due to vibration, leading to potential degradation in image quality.
Innovation Solution
An image forming apparatus is designed with a photoconductor unit, developing device, space maintaining device, pressing device, and securing device, where the developing device is connected to the photoconductor unit using removably secured connecting devices to maintain a consistent space and stabilize the developing roller's position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the developing device is not connected to the photoconductor unit, then the structure is simpler and easier to assemble, but the space between the developing roller and photoconductor varies due to vibration
Solution Approach 1:
The connection structure is divided into a connecting member with a connecting arm, and a securing device with a securing protrusion and groove. This segmentation allows the developing device to be flexibly connected to the photoconductor unit while maintaining stable spacing, resolving the contradiction between connection reliability and structural simplicity.
Solution Approach 2:
The connecting member acts as an intermediary between the developing device and the photoconductor unit. It transmits the spacing from the photoconductor unit to the developing device while allowing for vibration absorption, thus maintaining space consistency without requiring a rigid complex structure.
2Reliability
If the developing device is connected rigidly to the photoconductor unit, then vibration impact is reduced, but the space variation due to vibration cannot be suppressed
Solution Approach 1:
The connecting arm is designed with rotational freedom at the connection portion, allowing it to dynamically adjust its angle in response to vibrations. This dynamic adjustment maintains the spacing between the developing roller and photoconductor while absorbing position variations, resolving the contradiction between space consistency and position stability.
Solution Approach 2:
The connection structure allows the connecting arm to change its angular parameter dynamically. By permitting angular adjustment while maintaining the radial distance (spacing), the system achieves space consistency without rigid position fixation, overcoming the contradiction between space stability and position flexibility.
Data Source
AI summary
An image forming apparatus includes a photoconductor unit, a developing device, a space maintaining device, a pressing device, a securing device, and at least one connecting device. The photoconductor unit includes a photoconductor and a first part. The developing device includes a developing roller and a second part. The space maintaining device has a third part, is provided in the photoconductor unit or the developing device, and is brought into contact with the first part or the second part at the third part so as to maintain a space between the developing roller and the photoconductor. The pressing device presses the developing device toward the photoconductor unit. The securing device is removable. The at least one connecting device secures the photoconductor unit and the developing device by using the securing device so as to connect the photoconductor unit and the developing device to each other.