Sheet Feeding Unit Opening Control for Print Accuracy
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Solution Overview
Problem
In production printing, there is a challenge in ensuring that the attributes of sheets fed to sheet feeding units in image forming apparatuses match the set attributes, leading to sheet jams and incorrect output, which deteriorates operator productivity.
Innovation Solution
An image forming apparatus with a sheet feeding device and an opening and closing controlling unit that receives instructions to assign sheets with specific attributes to designated sheet feeding units, physically opening the corresponding unit to ensure accurate feeding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the sheet feeding unit remains closed during sheet assignment, then the apparatus maintains a compact structure and prevents accidental sheet dispensation, but the operator cannot visually confirm sheet attributes and may experience feeding errors
Solution Approach 1:
The sheet feeding unit is opened in advance during the sheet assignment process, allowing the operator to visually confirm the sheet attributes (size, type, quantity) before the actual printing operation begins. This preliminary verification action prevents feeding errors while maintaining operational efficiency.
2Ease of operation
If the sheet feeding unit is opened during sheet assignment, then the operator can verify sheet attributes visually, but the apparatus structure becomes more complex and sheet dispensation may occur accidentally
Solution Approach 1:
The opening and closing of the sheet feeding unit is automatically controlled by the system based on the sheet assignment status. When a sheet is assigned to a sheet feeding unit, the system automatically opens it; when the assignment is complete, it automatically closes it. This eliminates the need for manual intervention and reduces operational complexity.
3Device complexity
If manual monitoring of sheet attributes is required, then the system maintains simple control logic, but operator productivity deteriorates due to increased attention requirements
Solution Approach 1:
The system provides automatic feedback to the operator by displaying sheet attribute information (size, type, quantity) on the display unit when a sheet is assigned to a sheet feeding unit. This visual feedback mechanism allows the operator to verify sheet attributes without manual monitoring, maintaining simple control logic while improving productivity.
Data Source
AI summary
An image forming apparatus includes a sheet feeding device having a plurality of sheet feeding units, an opening and closing controlling unit, and a receiving unit. The opening and closing controlling unit controls opening and closing of the sheet feeding unit. Where the receiving unit receives an instruction for assigning a sheet having selected one attribute to designated one sheet feeding unit, the opening and closing controlling unit opens the designated one sheet feeding unit.