Process Cartridge Guide Surface for Easier Drawer Attachment
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Solution Overview
Problem
The attachment of enlarged process cartridges to a drawer becomes difficult due to increased weight, making it challenging to easily attach them to the image forming apparatus.
Innovation Solution
The process cartridge is designed with a locking member that moves between locking and unlocking positions, allowing the developing roller to contact or separate from the photosensitive drum, and a rib and protrusion on the drawer that guide the cartridge during attachment, facilitating easy alignment and attachment to the drawer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the capacity of the process cartridge is enlarged, then the storage capacity is improved, but the attachment difficulty increases due to increased weight
Solution Approach 1:
The drawer is divided into multiple drawers, and the process cartridge is segmented into multiple process cartridges. Each individual process cartridge maintains a manageable size and weight for easy handling, while the collective storage capacity of multiple cartridges provides the required large capacity. This segmentation allows users to attach and detach individual lighter cartridges rather than handling one heavy large-capacity cartridge.
2Quantity of substance
If the capacity of the process cartridge is enlarged, then the storage capacity is improved, but the handling difficulty increases
Solution Approach 1:
The process cartridge is segmented into multiple smaller units that can be independently handled. Each segmented cartridge has reduced weight and dimensions, making them easier to manufacture, transport, and install. The modular segmented design allows standard manufacturing processes to be applied to each unit rather than requiring specialized handling for a single large-capacity cartridge.
3Quantity of substance
If the weight of the process cartridge is increased to enlarge capacity, then the storage capacity is improved, but the attachment ease deteriorates
Solution Approach 1:
Instead of increasing the weight of a single process cartridge to achieve larger capacity, the system segments the total capacity into multiple lighter cartridges. Each cartridge maintains an optimal weight for easy attachment and detachment, while the aggregate capacity of all cartridges together provides the required large storage capacity. This eliminates the need to handle heavy individual cartridges.
Solution Approach 2:
The solution transitions from a single-dimension approach (one large heavy cartridge) to a multi-dimensional approach (multiple smaller lighter cartridges arranged in multiple drawers). The capacity is distributed across different spatial dimensions (multiple drawers positioned at different locations), allowing large total capacity without requiring any single cartridge to be heavy or difficult to handle.
Data Source
AI summary
An image forming apparatus includes a housing, a drawer, and a process cartridge attachable to the drawer. The drawer can be drawn out of the housing toward one side in a first direction. The process cartridge includes: a process housing; a photosensitive drum rotatable about an axis extending in a second direction; a developing roller movable between a separated position and a contacting position relative to the photosensitive drum; and a locking member. The locking member is movable between a locking position for locking the developing roller at the separated position and an unlocking position for allowing the developing roller to move to the contacting position. The process cartridge is configured to contact a first surface of the drawer to be guided toward an attachment position on the drawer while the locking member is at the locking position during attachment of the process cartridge to the drawer.