Axial Moving Cleaning Roller for Charging Body
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Solution Overview
Problem
Existing cleaning devices for charging rollers in image forming apparatuses are inefficient in removing contaminants and may cause image defects due to insufficient cleaning, leading to premature wear and charging marks.
Innovation Solution
A cleaning device with a rotating cleaning roller featuring a shaft and an elastic layer, supported by bearing members and a moving mechanism that periodically moves axially during rotation, effectively scrapes off contaminants from the charging roller, enhancing cleaning efficiency and extending its lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a stationary cleaning member is used to clean the charging roller, then the device structure is simple, but the cleaning efficiency is insufficient and contaminants are not thoroughly removed
Solution Approach 1:
The cleaning member is configured to rotate about an axis, transforming from a stationary component to a dynamic rotating component. This rotation enables the cleaning elastic layer to continuously contact and scrape contaminants from the charging roller surface, significantly improving cleaning efficiency while maintaining a relatively simple device structure through the use of bearing members for support.
2Productivity
If the cleaning member rotates continuously, then cleaning efficiency improves, but vibration increases causing premature wear and charging marks
Solution Approach 1:
The cleaning member rotates periodically rather than continuously, with the rotation synchronized to the charging roller rotation. This periodic rotation allows the cleaning elastic layer to contact the charging roller surface at specific intervals, effectively removing contaminants while reducing continuous vibration and mechanical stress, thereby preventing premature wear and charging marks.
Solution Approach 2:
The system utilizes controlled mechanical vibration through the periodic rotation and contact between the cleaning member and charging roller. The vibration is managed through the bearing members and the elastic properties of the cleaning layer, which absorb excessive vibrations while maintaining effective cleaning contact, thus preventing damage from harmful vibrations.
3Reliability
If a simple bearing support is used for the cleaning member, then device complexity is low, but vibration is not sufficiently suppressed leading to damage
Solution Approach 1:
Bearing members are introduced as intermediary components between the cleaning member shaft and the device housing. These bearing members provide rotational support while absorbing and dampening vibrations generated during the cleaning process. The elastic layer also acts as an intermediary that cushions the contact between the cleaning member and charging roller, further suppressing harmful vibrations.
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 provides improved cleaning efficiency, reducing image defects and extending the life of the charging roller by ensuring thorough removal of contaminants with each rotation, while minimizing vibration-induced damage.
Implementation Method 1
The elastic layer is brought into contact with a rotating charging body. The cleaning member cleans the charging body while rotating.
Implementation Method 2
The cleaning member cleans the charging body while rotating... effectively scrapes off contaminants from the charging roller
Data Source
AI summary
A cleaning device includes a cleaning member, a first bearing member, a second bearing member, and a moving mechanism. The cleaning member includes a shaft portion and an elastic layer disposed around the shaft portion. The elastic layer is brought into contact with a rotating charging body. The cleaning member cleans the charging body while rotating. The first bearing member supports a first end portion of the shaft portion while rendering the shaft portion rotatable. The second bearing member supports a second end portion of the shaft portion while rendering the shaft portion rotatable. The moving mechanism is supported by the first bearing member and the second bearing member. The moving mechanism periodically moves the shaft portion in an axial direction of the shaft portion together with a rotation of the cleaning member.