Image Forming System Automatic Tray Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In image forming systems, users may inadvertently set the wrong sheet feeding source, leading to improper sheet feeding and potential failure in printing special papers when attempting to use the manual bypass tray, due to lack of automatic detection and switching mechanisms.
Innovation Solution
An image forming system with an opening/closing detection part and a sheet feeding source setting part that automatically sets the manual bypass tray as the sheet feeding source when it is opened and a printing instruction is input, regardless of the previously set source, ensuring correct feeding from the manual tray.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the user manually changes the sheet feeding source from the sheet feeding cassette to the manual bypass tray, then the sheet feeding source can be switched, but the user may forget to change or input printing instruction while the sheet feeding cassette is still set, leading to incorrect sheet feeding
Solution Approach 1:
The system automatically detects when the manual bypass tray is opened and self-adjusts the sheet feeding source setting without requiring manual user input. The control unit monitors the tray state and automatically switches the sheet feeding source to the manual bypass tray when detected as open, making the system serve itself by eliminating the need for users to manually change settings.
Solution Approach 2:
The system implements a feedback mechanism where the control unit continuously monitors the state of the manual bypass tray through detection means. When the tray is opened, this state information is fed back to the control unit, which then automatically updates the sheet feeding source setting. This closed-loop feedback ensures the system state reflects the actual physical configuration.
2Reliability
If the system automatically switches sheet feeding source when manual bypass tray is opened, then correct sheet feeding is ensured, but the system complexity increases due to addition of detection part and control logic
Solution Approach 1:
The control unit serves multiple functions: it manages the image forming control, monitors the manual bypass tray state through the detection means, and automatically adjusts the sheet feeding source setting. By making the control unit multi-functional, the system avoids adding a separate dedicated control device, thus reducing overall system complexity while maintaining the automatic switching capability.
Solution Approach 2:
The detection means for monitoring the manual bypass tray state is integrated with the existing control unit rather than being a separate independent component. The control logic for automatic sheet feeding source switching is merged into the existing image forming control software. This consolidation reduces the number of discrete components and simplifies the system architecture.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
An image forming system (1) includes an image forming apparatus (2) having an apparatus main body (5), a sheet feeding cassette (6), a manual bypass tray (7), an opening/closing detection part (8) and a sheet feeding source setting part (42) . The apparatus main body (5) has an input part (11) to which a printing instruction is input. The sheet feeding source setting part (42) sets the sheet feeding cassette (6) or the manual bypass tray (7) as a sheet feeding source. When the opening/closing detection part (8) detects that the manual bypass tray (7) is displaced from the close posture to the open posture and the printing instruction is input to the input part (11), regardless of the sheet feeding source input to the input part (11), the sheet feeding source setting part (42) sets the manual bypass tray (7) as the sheet feeding source.