Image Forming Apparatus Toner Container Release
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Solution Overview
Problem
Conventional image forming apparatuses require users to manually switch operation modes and perform complex procedures to release the toner container for investigation during abnormalities, leading to increased time and effort, especially when the second control portion is stopped.
Innovation Solution
The image forming apparatus includes a regulation releasing method with a detection portion, restriction processing, switching processing, determination processing, and release processing, allowing for automatic determination of continued abnormalities and release of toner container restrictions during the stop mode, reducing user effort and time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the regulation portion restricts removal of the toner container during abnormality, then system reliability is improved, but ease of operation deteriorates when investigation is needed
Solution Approach 1:
The regulation portion dynamically changes its restriction state based on the operation mode. In normal mode, it restricts toner container removal to maintain system reliability. In stop mode, it releases the restriction to allow easy removal for investigation. This dynamic adaptation resolves the contradiction by making the system both reliable during operation and easy to operate when needed.
Solution Approach 2:
The system changes the parameter of restriction state (restricted/not restricted) based on the operation mode (normal/stop). When the operation mode switches to stop mode, the regulation portion changes its parameter from restricted to not restricted, allowing toner container removal for investigation while maintaining reliability during normal operation.
2Measurement precision
If manual mode switching and complex procedures are required, then control precision is improved, but time consumption increases
Solution Approach 1:
The system performs preliminary switching of the operation mode to stop mode before the user needs to remove the toner container. The control portion automatically detects the need for investigation and switches modes in advance, so when the user wants to remove the container, the regulation portion is already in the released state, saving time.
Solution Approach 2:
The control portion automatically detects abnormalities and switches the operation mode without requiring manual user intervention. The system serves itself by automatically transitioning to the appropriate mode based on detected conditions, eliminating the need for users to manually switch modes and reducing time consumption.
3Reliability
If the second control portion is stopped for safety, then safety is improved, but automation capability deteriorates
Solution Approach 1:
The control system is segmented into two independent control portions: the first control portion that continues to operate and can switch operation modes, and the second control portion that is stopped for safety during investigation. This segmentation allows the first control portion to maintain automation capability while the second remains stopped for safety.
Solution Approach 2:
The first control portion acts as an intermediary between the stopped second control portion and the regulation portion. It receives abnormality detection results, switches the operation mode accordingly, and controls the regulation portion to release restrictions, maintaining automation capability even when the second control portion is stopped.
Data Source
AI summary
An image forming apparatus includes a control portion, a switching processing portion, a determination processing portion, and a release processing portion. The control portion includes a detection portion that detects abnormality regarding an image forming portion, and controls the image forming portion. When the abnormality detected by the detection portion is a first abnormality, the switching processing portion switches an operation mode of the image forming apparatus from a normal mode to a stop mode in which the control portion is stopped. When a specific operation is performed in a case where the operation mode is the stop mode, the determination processing portion determines whether or not a second abnormality is continued, based on a record result of detection of the abnormality. When it is determined that the second abnormality is continued, the release processing portion releases regulation on a removal of a developer storing portion.