Printer Conveyance Control for Jam Clearance Speed
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Solution Overview
Problem
The one-sided continuous printing method, which allows for higher speed in double-side printing compared to traditional methods, faces challenges with sheet jamming and blackout issues, resulting in a larger number of sheets being held in the conveyance path, making it time-consuming to clear jams.
Innovation Solution
A printing system with a conveyance mechanism and control unit that allows selection between different double-side printing methods based on the maximum number of sheets in the conveyance mechanism, enabling the system to adapt and reduce the number of sheets in the path during printing, thereby minimizing jamming issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the one-sided continuous printing method is used to increase printing speed, then productivity is improved, but the number of sheets held in the conveyance path increases, leading to longer time required to clear jams when sheet jamming occurs
Solution Approach 1:
The system dynamically switches between one-sided continuous printing method and double-sided continuous printing method based on real-time detection of sheet jamming conditions. When sheet jamming is detected, the system transitions from the high-speed one-sided method to the double-sided continuous method, which maintains fewer sheets in the conveyance path, thereby reducing clearance time while restoring normal operation.
Solution Approach 2:
The sheet feeding unit is configured to detect sheet jamming conditions and provide feedback to the control system. This feedback mechanism enables the system to monitor the conveyance path status and automatically adjust the printing method in response to detected jams, creating a closed-loop control system that optimizes both speed and jam clearance efficiency.
2Productivity
If the one-sided continuous printing method is used, then printing processing speed is improved, but the number of sheets in the conveyance path increases, making the system more vulnerable to sheet jamming and blackout issues
Solution Approach 1:
The system employs dynamic method selection, switching between one-sided continuous printing and double-sided continuous printing based on detected sheet conditions. When sheet jamming or blackout is detected, the system transitions to the double-sided continuous method, which processes fewer sheets simultaneously in the conveyance path, thereby improving reliability and reducing vulnerability to jamming while maintaining high productivity during normal operation.
3Quantity of substance
If the double-sided continuous printing method is used, then the number of sheets in the conveyance path is reduced, but printing speed is lower compared to the one-sided continuous printing method
Solution Approach 1:
The system dynamically adjusts the printing method based on operational conditions. During normal operation with no sheet jamming detected, the system uses the one-sided continuous printing method to maximize printing speed. When sheet jamming is detected, it switches to the double-sided continuous printing method, which maintains a smaller number of sheets in the conveyance path, thus optimizing for reliability during problematic conditions while preserving speed during normal operation.
Data Source
AI summary
A printing system includes a printing unit performing printing on a sheet, a conveyance mechanism, a control unit, and a selection unit causing a user to select any one of a plurality of methods whose maximum numbers of sheets existing in the conveyance mechanism at the same time are different from each other. The control unit controls the printing unit and the conveyance mechanism to perform double-side printing processing depending on any one of the methods. The control unit performs double-side printing processing in accordance with the method selected by the selection unit.