Toner Container Shutter Interface for Leak-Free Port Alignment
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Solution Overview
Problem
Toner leakage occurs between replaceable units in image forming devices due to misalignment of shutters, leading to uncleanliness and contamination of electrophotographic components and print defects.
Innovation Solution
A toner container with a movable shutter mechanism that includes an engagement surface or projection to push open the developer unit's shutter during insertion, ensuring proper alignment and preventing toner leakage by using biasing members to maintain the shutter in a closed position until actuated by the device's corresponding surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If shutters are used to seal ports on replaceable units, then toner leakage is prevented, but the system becomes more complex and prone to misalignment issues
Solution Approach 1:
The patent combines the shutter mechanism with the replaceable unit housing, integrating the sealing function directly into the unit structure. The shutter is positioned such that it automatically seals the port when the replaceable unit is inserted into the image forming device, eliminating the need for separate positioning mechanisms and reducing overall system complexity while preventing toner leakage.
Solution Approach 2:
The shutter mechanism is designed to automatically seal the port based on the insertion of the replaceable unit itself. The physical act of inserting the replaceable unit triggers the shutter to close and seal the port, eliminating the need for external control systems or complex positioning algorithms. The system uses the replaceable unit's own insertion to activate the sealing function.
2Productivity
If shutters are made movable to allow toner delivery, then toner flow is enabled, but misalignment during insertion causes contamination
Solution Approach 1:
The shutter is pre-positioned in a sealed state within the replaceable unit before insertion. The design ensures that upon insertion, the shutter automatically transitions to the open position at the correct moment to allow toner delivery, then returns to the sealed position. This preliminary positioning and automatic transition eliminates misalignment issues and ensures reliable operation.
Solution Approach 2:
The shutter is designed as a dynamic component that can automatically transition between sealed and open states based on the operational requirements. The shutter responds to mechanical stimuli from the insertion and operation of the replaceable unit, dynamically adjusting its position to either seal the port or allow toner flow, thereby ensuring both reliability and productivity.
3Reliability
If shutters remain closed to prevent contamination, then component protection is improved, but toner delivery is blocked
Solution Approach 1:
The shutter operates in a periodic manner, alternating between sealed and open states. During normal operation, the shutter remains closed to protect components from contamination. When toner delivery is required, the shutter automatically opens to allow toner flow, then returns to the closed position after delivery is complete. This periodic action ensures both component protection and continuous productivity.
Solution Approach 2:
The shutter acts as an intermediary between the toner reservoir and the external environment. It selectively allows toner to pass through when needed while blocking contamination from entering the reservoir. The shutter's automatic opening and closing based on operational signals ensures that both protection and delivery functions are achieved without manual intervention.
Data Source
AI summary
A toner container for use with a developer unit of an image forming device according to one example embodiment includes a body having a front that leads during insertion of the toner container into the image forming device and a rear that trails during insertion of the toner container into the image forming device. An outlet port is positioned on a bottom of the body and adjacent to the front of the body for exiting toner from the toner container. An engagement surface is positioned at the bottom of the body and adjacent to the front of the body for contacting and pushing open a developer shutter of an inlet port of the developer unit in a direction of insertion of the toner container into the image forming device during insertion of the toner container into the image forming device.