Dynamic Transport Speed Control for Rolled Paper Print Jobs
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Solution Overview
Problem
In image forming apparatuses that print on rolled paper, scheduling multiple print jobs with different allowable transport speeds results in inefficiencies, leading to increased completion time and paper waste due to the need to use the lowest common transport speed, which can cause blanks in printing.
Innovation Solution
An information processing system that dynamically adjusts and varies the transport speed of rolled paper during print operations to ensure each print job operates within its allowable speed range, using a management server to control the image forming apparatus and optimize print job scheduling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the smallest allowable transport speed is used for all print jobs, then print quality and data processing are ensured, but the total printing time increases
Solution Approach 1:
The patent implements dynamic transport speed adjustment by varying the transport speed according to the specific requirements of each print job. The control unit adjusts the transport speed dynamically during the printing process, allowing each job to run at its optimal speed while ensuring data is processed in time. This resolves the contradiction by making the system adaptive rather than static.
Solution Approach 2:
The patent changes the transport speed parameter based on the allowable values specified for each print job. By adjusting this key parameter dynamically, the system can optimize printing time for each job while maintaining print quality. The control unit modifies the transport speed parameter to match the specific requirements of each print job in the queue.
2Loss of time
If higher transport speed is used, then printing time is reduced, but blanks may occur in the printed output
Solution Approach 1:
The patent implements a feedback mechanism where the control unit monitors the relationship between transport speed and data processing speed. Based on this feedback, the system adjusts the transport speed to ensure data is printed continuously without blanks. The control unit receives information about print job requirements and adjusts speeds accordingly to maintain print continuity.
Solution Approach 2:
The patent performs preliminary action by determining the allowable transport speed for each print job before printing begins. The control unit pre-calculates the optimal speed based on data processing capabilities and job requirements, ensuring that the transport speed is set appropriately from the start to prevent blanks while minimizing printing time.
3Productivity
If variable transport speed control is implemented, then printing efficiency is improved, but system complexity increases
Solution Approach 1:
The patent implements a universal control unit that can handle multiple print jobs with different speed requirements using a single integrated system. The control unit is designed to be multi-functional, managing speed adjustment, data processing coordination, and print quality maintenance for various job types. This reduces overall system complexity while maintaining high productivity.
Data Source
AI summary
An information processing system includes a processor that performs control, in the case where plural print jobs with different allowable values of a transport speed are consecutively scheduled on one roll of rolled paper, so as to increase and reduce the transport speed of each print job in such a range that the transport speed of the print job does not exceed the allowable value of the transport speed of the print job during execution of print operation corresponding to the print job.