Image Forming Ink Container Control During Replacement
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Solution Overview
Problem
Existing image forming apparatuses require temporary printing stops when a recording agent container cover is opened during printing, reducing productivity due to the need to replace the container.
Innovation Solution
An image forming apparatus with a controller that detects the open/close state of container covers and usage state of recording agent containers, allowing for selective continuation or stoppage of printing based on container usage conditions, ensuring uninterrupted operation during replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the container cover is opened during printing to replace the recording agent container, then the container can be replaced, but printing must be stopped which reduces productivity
Solution Approach 1:
The system segments the container management function by providing multiple container loading devices (first and second container loading devices) that can independently hold different recording agent containers. This segmentation allows the system to switch between containers without interrupting the printing process, as one container can be replaced while another is in use.
Solution Approach 2:
The controller changes the operational state parameters by detecting the open/closed state of container covers and the usage state of containers, then dynamically adjusting printing operations. When a container cover is opened, the controller identifies whether the container is currently in use and either stops printing only for that container or switches to an alternative container, thereby maintaining overall productivity.
2Reliability
If printing stops when container cover is opened, then container safety is ensured, but productivity decreases due to interruptions
Solution Approach 1:
The system implements dynamic response based on real-time detection of container cover state and container usage status. Rather than a static stop-all-operations approach, the controller dynamically determines the appropriate action: stopping printing only when necessary (when the opened container is in use) or continuing printing by switching to another container (when the opened container is not in use). This dynamic approach maintains safety while minimizing productivity loss.
3Productivity
If multiple recording agent containers are provided, then uninterrupted printing is possible, but device complexity increases
Solution Approach 1:
The first and second container loading devices are designed with universal functionality, each capable of independently holding and supplying recording agent containers. This multi-functionality allows the system to maintain printing continuity through container switching without requiring fundamentally different mechanisms for each loading device, thereby managing complexity through standardized, interchangeable components.
Data Source
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AI summary
An image forming apparatus (1) on which a plurality of ink containers containing ink of the same color can be mounted includes container loading devices (32) that are detachably loaded with the ink containers, a container cover (321) that is provided in each of the container loading devices (32) and opens and closes a loading port of the container loading device (32), and a controller (100) that executes a stop process for stopping use of the ink container to stop printing when the ink container loaded in the container loading device (32) with the container cover (321) open is in use when the container cover (321) is opened during printing, but does not execute the stop process not to stop the printing when the ink container loaded in the container loading device (32) with the container cover (321) open is not in use.