Print Control Apparatus Managing Continuous Sheet Discharge
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Solution Overview
Problem
Existing printing apparatuses face issues with clogging and inefficiency when printing on both sides of a continuous sheet, particularly when the discharge destination is full, leading to incomplete printing and potential discarding of sheets.
Innovation Solution
A print control apparatus and method that optimizes the control of a continuous sheet printing process by managing sheet discharge and inversion, allowing continuous printing on one side before switching to the other, using a control unit with a CPU, ROM, RAM, and external interfaces to manage sheet conveyance, cutting, and sorting, ensuring efficient use of available trays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If printing is performed on both sides of a continuous sheet by feeding, printing, cutting, winding, and re-feeding, then printing efficiency is improved, but clogging occurs when the discharge destination is full causing incomplete printing and sheet waste
Solution Approach 1:
The control unit determines in advance whether the discharge destination can accommodate the printed sheet before initiating the printing process. This preliminary check prevents clogging by ensuring discharge capacity is available, thereby maintaining both printing efficiency and completion reliability without requiring manual intervention or sheet discarding.
2Speed
If the printing process continues without checking discharge availability, then printing speed is maintained, but sheets may be discarded and process interruption occurs
Solution Approach 1:
The control unit continuously monitors the discharge destination's capacity status and uses this feedback information to control the printing process. When the discharge destination is full, the system receives feedback and automatically adjusts by pausing or stopping the printing process, preventing sheet waste while maintaining optimal printing speed during available capacity periods.
3Reliability
If manual intervention is required to stop and discard sheets, then clogging is resolved, but operational complexity increases and productivity decreases
Solution Approach 1:
The control unit automatically manages the printing process by monitoring discharge destination capacity and controlling sheet feeding, printing, and process continuation or pause without requiring manual intervention. This self-service capability maintains process continuity and reliability while preserving automatic operation and productivity.
Data Source
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AI summary
In order to prevent a printing process from clogging by reason of being incapable of discharging a sheet to a discharge destination in the case of duplex printing on a continuous sheet, the number of pages to be printed continuously on the same side of the sheet is decided so that the number of required discharging destinations conforms to the number of available discharge destinations. Then, according to the decision, printing on the same side of the sheet is performed, and the sheet is discharged to the respective discharge destinations.