Modular Cleaning Device Sub-Units for Selective Roller Replacement
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Solution Overview
Problem
Existing image forming apparatuses face high maintenance costs due to uneven wear of cleaning brush rollers, where the upstream roller handles more toner and is exhausted faster, necessitating premature replacement of the entire cleaning device.
Innovation Solution
A cleaning device with multiple cleaning members arranged consecutively and housed in casings, forming sub-units that are individually removable and replaceable, allowing for selective replacement of worn components while maintaining functionality of the other sub-units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple cleaning brush rollers are used to reliably remove residual toner, then cleaning reliability is improved, but maintenance cost increases due to uneven wear and premature replacement of the entire cleaning device
Solution Approach 1:
The cleaning device is divided into multiple independent sub-units, each containing a cleaning brush roller. This segmentation allows individual sub-units to be replaced independently when worn, rather than replacing the entire cleaning device. The sub-unit holder accommodates these modular sub-units, enabling selective replacement of only the worn component while retaining functional sub-units.
2Productivity
If the upstream cleaning brush roller handles more toner, then cleaning effectiveness is improved, but the roller is exhausted faster requiring premature replacement
Solution Approach 1:
By segmenting the cleaning system into independent sub-units with individual rollers, the patent enables selective replacement of only the worn upstream roller while retaining the still-functional downstream roller. This extends the overall service life of the cleaning device compared to replacing the entire assembly when one roller wears out.
Solution Approach 2:
The patent implements a strategy where worn components (individual rollers or sub-units) are discarded and replaced while recovering and retaining the functional components. This selective replacement approach maximizes the utilization of cleaning members and reduces waste.
3Reliability
If the entire cleaning device is replaced when one roller is exhausted, then reliability is maintained, but maintenance cost and waste increase
Solution Approach 1:
The modular segmented design allows the cleaning device to be maintained by replacing only the worn sub-unit rather than the entire device. This reduces component waste and lowers maintenance costs while preserving the reliability of the cleaning function through selective component replacement.
Solution Approach 2:
The patent implements a selective replacement strategy where only the exhausted roller or sub-unit is discarded while functional components are recovered and retained. This approach maintains cleaning reliability without the waste associated with replacing the entire device.
Data Source
AI summary
A cleaning device including: multiple cleaning members arranged consecutively in a direction of movement of a cleaning target to remove adhered substances from the cleaning target; multiple casings to individually hold and at least partially enclose the multiple cleaning members, respectively, the casings and the cleaning members together constituting multiple sub-units; and a sub-unit holder to hold the multiple sub-units, from which the sub-units are individually removable.