Cartridge Protection Cover for Developing Roller Deformation
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Solution Overview
Problem
The existing printer designs face challenges in reducing package size for transportation while preventing permanent deformation of the developing roller during shipment, which increases transportation costs due to the need for a separate separating member.
Innovation Solution
A cartridge system comprising a first cartridge with a photosensitive body, a second cartridge for toner supply, and a protection cover that can be attached or detached to accommodate the second cartridge, allowing it to be separated from the photosensitive body during transportation, thus reducing the package size and transportation costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the developing cartridge is detachably mounted in the drum unit to reduce package size for transportation, then the package size is reduced, but the developing roller may come into contact with the photosensitive drum causing permanent deformation
Solution Approach 1:
A separating member is attached to the drum unit before transportation to prevent contact between the developing roller and photosensitive drum. This preliminary protective action ensures that when the developing cartridge is detachably mounted for space-saving transportation, the developing roller remains protected from deformation.
2Reliability
If a separating member is attached to the drum unit to protect the developing roller during transportation, then the developing roller is protected from deformation, but the device complexity increases due to additional components
Solution Approach 1:
The separating member is integrated with the drum unit structure rather than being a completely separate component. This merging approach provides the necessary protection function while minimizing the increase in device complexity by utilizing existing structural elements.
3Ease of operation
If the separating member is detached before use after transportation, then the printer can be used normally, but the transportation cost is increased due to the need for assembly and disassembly operations
Solution Approach 1:
The separating member is designed with dynamic attachment and detachment capabilities, allowing it to be easily installed for transportation and removed for normal operation. This dynamic design enables the system to adapt between protective and operational states without permanent modification.
Data Source
AI summary
A cartridge includes: a first cartridge; a second cartridge; and a protection cover. The first cartridge includes: a photosensitive body; a photosensitive-body accommodating portion for accommodating the photosensitive body; and a cartridge mounting portion. The second cartridge is detachably mounted in the first cartridge and includes a developer carrier. The protection cover provides an attached state to be attached to the second cartridge and a detached state to be detached from the second cartridge. The protection cover at the attached state faces the developer carrier to protect the developer carrier. The second cartridge provides an accommodated position to be accommodated in the cartridge mounting portion when the protection cover is at the attached state, and a mounted position to be mounted in the cartridge mounting portion when the protection cover is at the detached state.