Image Forming Apparatus Control for Sheet-Type Compatibility
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Solution Overview
Problem
Existing image forming apparatuses face issues with defective fixing performance and print quality degradation due to inappropriate combinations of sheet size and type, which can also damage the fixing device when users incorrectly specify print settings without changing the sheet type.
Innovation Solution
An image forming apparatus equipped with a combination table that stores appropriate sheet size and type combinations, a print setting controller that adjusts settings to match these combinations, and a display controller that notifies users of changes, ensuring proper print settings are maintained.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the user specifies print settings without verifying sheet type compatibility, then the printing operation can be executed quickly, but defective fixing performance and print quality degradation occur
Solution Approach 1:
The system performs preliminary verification of sheet type compatibility before executing the printing operation. The control unit checks whether the specified sheet type is appropriate for the given sheet size and printing conditions in advance, preventing defective fixing performance before it occurs.
Solution Approach 2:
The system provides feedback to the user when an inappropriate sheet type is detected. The control unit notifies the user of the incompatibility between the specified sheet type and the printing conditions, allowing the user to correct the setting before printing begins.
2Ease of operation
If the user changes sheet size without updating sheet type, then the print setting can be modified easily, but fixing offset and device damage may occur
Solution Approach 1:
The system performs preliminary verification to detect changes in sheet size that require sheet type updates. Before the printing operation begins, the control unit checks whether the current sheet type is still appropriate after the user modifies the sheet size setting.
Solution Approach 2:
The system provides feedback to the user when a sheet size change renders the current sheet type inappropriate. The control unit notifies the user of the incompatibility, preventing fixing offset and potential device damage.
3Manufacturing precision
If the system verifies sheet type compatibility before printing, then print quality is maintained, but additional verification steps increase operation time
Solution Approach 1:
The system performs self-verification of sheet type compatibility using automatically acquired information about the sheet and printing conditions. The control unit checks compatibility without requiring additional manual input from the user, minimizing verification time while maintaining print quality.
Data Source
AI summary
A print setting controller decides whether a combination of a sheet size and a sheet type specified for print setting is included in a combination table. When the combination of the sheet size and the sheet type specified for the print setting is included in the combination table, a controller executes a print job according to the print setting. When the combination of the sheet size and the sheet type specified for the print setting is not included in the combination table, the print setting controller selects a sheet type appropriate for the sheet size specified as the print setting, from the combination table, and changes the sheet type thus far designated to the selected sheet type. A display controller causes a display device to display a message to the effect that the sheet type has been changed.