Toner Cartridge Shutter Locking for On-Demand Replenishment
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Solution Overview
Problem
Existing image forming apparatuses face challenges in efficiently supplying toner without requiring frequent replacement of process cartridges, especially when toner levels are low, and there is a need for improved systems that allow flexible toner replenishment methods.
Innovation Solution
A cartridge system with a movable shutter member and locking mechanism controlled by electric power, allowing toner supply from a detachable supply container, and a frame design with movable members for controlled toner ejection, ensuring seamless toner replenishment without full cartridge replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a process cartridge system is used where a photosensitive member and developer container are combined, then the apparatus structure is simplified, but the cartridge must be replaced frequently when toner is depleted
Solution Approach 1:
The system is divided into two independent parts: a process cartridge containing the photosensitive member and a separate supply container containing the toner reservoir. This segmentation allows the toner supply to be replenished independently without replacing the entire process cartridge, thereby reducing replacement frequency while maintaining structural simplicity.
Solution Approach 2:
The supply container is designed to be attachable to the process cartridge, with the toner supply mechanism nested within or alongside the cartridge structure. This nested configuration enables the toner reservoir to be refilled or replaced independently while maintaining integration with the process cartridge, thus reducing the need for frequent cartridge replacements.
2Productivity
If a sequential supply system with a developer supply case is used, then toner can be supplied on demand, but the system complexity increases
Solution Approach 1:
The toner supply function is extracted from the main process cartridge into a separate, detachable supply container. This extracted design allows the toner supply mechanism to operate independently with simpler control, enabling on-demand toner supply while reducing the complexity of the overall system by separating the supply function from the imaging function.
3Extent of automation
If a locking mechanism controlled by electric power is used to control shutter movement, then toner supply is automatically controlled, but the device complexity increases
Solution Approach 1:
The locking mechanism is designed to automatically engage and disengage based on the attachment state of the supply container. When the supply container is attached, the locking mechanism automatically unlocks to allow toner supply; when detached, it automatically locks. This self-service automation reduces the need for complex control circuits while achieving automatic toner supply control based on the physical state of the system.
Data Source
AI summary
A cartridge is configured to be attachable to a main body of an image forming apparatus and configured to receive toner supplied from a supply container. The cartridge includes a supply port configured to receive the toner supplied from the supply container, a shutter member configured to cover the supply port, and a locking member. The locking member is moved from a lock position to an unlock position to allow movement of the shutter member by using electric power supplied from the main body.