Inlet Shutter Mechanism for Detachable Process Unit Fluid Connection
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Solution Overview
Problem
Conventional image forming devices face issues with ensuring reliable fluid connection between developer cartridges and developing units due to insufficient fluid connection between toner outlet and inlet ports, especially when the process unit is moved or detached.
Innovation Solution
The image forming device incorporates a stationary main body, a movable process unit, an inlet shutter mechanism, and abutment portions to ensure fluid communication between offset communication ports, allowing for stable toner supply by positioning the process unit and shutters to maintain connection during movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the process unit is made detachable and movable relative to the main body, then the ease of operation and maintenance is improved, but the reliability of fluid connection between toner outlet ports and inlet ports deteriorates
Solution Approach 1:
The patent uses flexible shutters made of elastic material that can deform to maintain sealing contact between the movable process unit and the stationary main body. These shutters are positioned at communication ports and flexibly close or open passages based on the relative position of the process unit, ensuring reliable fluid connection even during movement and detachment.
Solution Approach 2:
The patent introduces flexible shutters as intermediary elements between the stationary main body and the movable process unit. These shutters act as mediators that maintain the fluid connection interface, opening passages when the process unit is properly positioned and closing them when detached, thus resolving the contradiction between detachability and connection reliability.
2Ease of operation
If the process unit is moved in the first direction for operation, then the ease of operation is improved, but the fluid connection between offset communication ports may be lost
Solution Approach 1:
The patent employs dynamic shutters that can change their state (open/closed) in response to the movement of the process unit. The shutters are positioned to respond to the first direction movement, automatically opening when the process unit moves to the operative position and closing when moved away, thus maintaining reliable fluid connection dynamically during operation.
Solution Approach 2:
The patent positions the shutters in advance at the communication ports with predetermined orientations. Before the process unit moves to the operative position, the shutters are already in place to establish fluid connection. This preliminary positioning ensures that when the process unit moves in the first direction, the offset communication ports are already aligned and connected.
Data Source
AI summary
An image forming device facilitating fluid communication between developer cartridges supported in a main body frame and a process unit in which developing units are accommodated in a drawer movable in a first direction and second direction opposite to the first direction. The developing units are arrayed in the first and second direction, and the process unit is formed with communication ports displaced from one another in a direction perpendicular to the first and second direction. An inlet shutter mechanism is provided to open the communication ports when the drawer is assembled to an operable position for image formation. The main body has abutment portions to open each shutter of the inlet shutter mechanism in accordance with the movement of the drawer to the operable position.