Image Forming Apparatus Cleaning Member Position Adjustment
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Solution Overview
Problem
Electrophotographic image forming apparatuses face quality deterioration due to streaky stains on the image carrier caused by deteriorated cleaning members, which conventional methods cannot eliminate, leading to production stops until the cleaning member is replaced.
Innovation Solution
An image forming apparatus with a cleaning device, detector, and adjusting mechanism that detects streaky stains and adjusts the relative position between the image carrier and cleaning member to eliminate the stains, allowing continuous operation without replacing the cleaning member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the cleaning member is replaced to eliminate streaky stains, then image quality is improved, but production stops until replacement and device complexity increases
Solution Approach 1:
The invention makes the cleaning member replaceable and adjustable in position, allowing dynamic adaptation when streaky stains occur. The cleaning member can be quickly repositioned or replaced without complex disassembly, resolving the contradiction by enabling rapid response to image quality issues while maintaining production continuity.
Solution Approach 2:
The invention changes the positional parameters of the cleaning member relative to the image carrier. By adjusting the position of the cleaning member in the sub-scanning direction, the system can compensate for streaky stains caused by cleaning member deterioration, thereby improving image quality without stopping production.
2Productivity
If the cleaning member is not replaced to maintain production, then productivity is improved, but image quality deteriorates due to streaky stains
Solution Approach 1:
The system dynamically adjusts the cleaning member position based on detected streaky stain patterns. This dynamic adjustment allows the system to maintain image quality while continuing production, resolving the contradiction between productivity and image quality.
Solution Approach 2:
The invention introduces a feedback mechanism where the detection unit monitors for streaky stains and the control unit adjusts the cleaning member position accordingly. This closed-loop feedback system enables the maintenance of image quality during continuous production by automatically responding to quality deviations.
3Device complexity
If the cleaning member position is fixed to simplify the device, then device complexity is reduced, but the ability to eliminate streaky stains is lost
Solution Approach 1:
The invention introduces a simple positional adjustment mechanism that allows the cleaning member to be moved in the sub-scanning direction. This dynamic capability enables streaky stain elimination while adding minimal complexity to the device structure.
Solution Approach 2:
The cleaning member is designed with multi-functionality: it can be both fixed during normal operation and adjusted when needed. The same component serves both as a stable cleaning element and as an adjustable element for eliminating streaky stains, reducing the need for additional specialized components.
Data Source
AI summary
An image forming apparatus includes: a cleaning device including a cleaning member that abuts a surface of an image carrier and cleans a surface of the image carrier; a detector that detects a stain generated on the surface of the image carrier in a moving direction of the surface of the image carrier; an adjusting mechanism that adjusts a relative position between the image carrier and the cleaning member in a direction orthogonal to the moving direction; and a hardware processor that controls the relative position between the image carrier and the cleaning member by driving the adjusting mechanism based on information regarding the stain detected by the detector.