Developing Apparatus Filter and Shutter for Toner Leakage Control
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Solution Overview
Problem
Existing image forming apparatuses require frequent replacement of development units when toner levels are low, which is costly and inconvenient.
Innovation Solution
A development apparatus with a detachable toner container and a mechanism that includes a reception port, a filter to prevent toner passage, and a main unit shutter to control communication between the toner container and the storage unit, allowing for easy toner supply without replacing the development unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the development unit is replaced frequently when toner levels are low, then the image forming apparatus can maintain proper toner supply, but the operational cost increases and user convenience deteriorates
Solution Approach 1:
The development unit is segmented into a reusable main body and a detachable toner container. The toner container can be separated and replaced independently, allowing users to refill toner without replacing the entire development unit. This segmentation enables cost-effective toner supply while maintaining reliability.
Solution Approach 2:
The toner container is extracted as a separate detachable component from the development unit. This extraction allows the toner container to be removed and replaced independently, enabling users to refill toner without disposing of or replacing the entire development unit, thus improving ease of operation while maintaining toner supply reliability.
2Ease of operation
If a detachable toner container system is implemented, then user convenience improves and operational costs reduce, but the device complexity increases
Solution Approach 1:
The attachment unit is segmented into functional components including a receptacle, a filter assembly, and a shutter mechanism. These segmented components work together to enable simple toner refilling operations while managing the overall device complexity through modular design.
Solution Approach 2:
The filter and shutter mechanism are designed to automatically perform functions during the toner refilling process. The filter self-regulates toner flow, and the shutter automatically opens/closes based on container attachment, reducing the need for complex manual controls and simplifying user operation.
3Ease of operation
If the opening is always open for toner supply, then toner refilling is convenient, but toner leakage and contamination increase
Solution Approach 1:
The shutter is designed as a dynamic component that automatically changes state based on container attachment. It closes when the toner container is detached to prevent leakage, and opens when the container is properly attached to enable toner supply. This dynamic behavior resolves the contradiction between accessibility and leakage prevention.
Solution Approach 2:
The filter acts as an intermediary component between the toner container and the storage chamber. It allows controlled passage of toner while blocking contaminants and preventing unauthorized leakage, thus enabling convenient toner supply while minimizing harmful effects.
4Reliability
If the filter is always in place to prevent toner passage, then toner containment is improved, but air flow restriction increases
Solution Approach 1:
The filter is designed as a porous component that allows air to pass through while blocking toner particles. This porous structure enables the filter to contain toner effectively without significantly restricting air flow, thus resolving the contradiction between toner containment and air flow management.
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
This solution enables efficient and cost-effective toner supply by allowing users to refill toner without replacing the entire development unit, improving usability and reducing operational costs.
Implementation Method 1
a filter configured to cover the opening, permit a passage of air and disturb a passage of toner
Data Source
AI summary
A development apparatus to and from which a toner container is attachable and detachable includes a developing roller, a storage unit configured to store toner to be carried by the developing roller, an attachment unit to and from which the toner container is attachable and detachable and provided with a reception port for receiving toner from the toner container to the storage unit, an opening through which an inside of the storage unit and an outside of the storage unit communicate with each other, a filter configured to cover the opening, permit a passage of air and disturb a passage of toner, and a main unit shutter movable between a non-communication position and a communication position and configured to shield the opening when the main unit shutter is located at the non-communication position and open the opening when the main unit shutter is located at the communication position.