Printing System Priority Scheduling for Downtime Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In printing systems, when operations of multiple units are suspended due to paper jams or other causes, the varying preparation times for each unit lead to extended downtime and reduced productivity, as the system must perform unique preparation operations for each unit before resuming normal operations.
Innovation Solution
A printing system with a priority setting section that determines the order of removing suspension causes based on the preparation operation times of each unit, informing the user to prioritize the removal of causes according to the set priority, thereby reducing overall downtime and improving productivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the cause of suspension is removed from units in arbitrary order, then the user can perform removal operations, but the system downtime is extended due to varying preparation operation times
Solution Approach 1:
The system performs preliminary action by calculating and determining the optimal removal order of suspension causes before the user executes removal operations. The control section computes which unit's suspension cause should be removed first based on preparation operation times, ensuring that units requiring longer preparation time are addressed first. This preliminary ordering minimizes total system downtime while guiding the user through removal operations in the optimal sequence.
2Stability of the object's composition
If the system waits for all units to be ready before resuming operations, then operational stability is maintained, but productivity is reduced due to extended downtime
Solution Approach 1:
The system applies dynamics by implementing a dynamic, prioritized recovery strategy instead of a static, uniform approach. The control section dynamically determines the removal order based on each unit's preparation operation time, allowing the system to resume operations as soon as the highest-priority unit is ready. This dynamic ordering optimizes productivity by minimizing total downtime while maintaining operational stability through controlled, sequential resumption of units in the determined order.
3Reliability
If preparation operations are performed for all units simultaneously, then all units are ready for operation, but the time required for units with long preparation operations extends overall system downtime
Solution Approach 1:
The system applies local quality by treating each unit's preparation operation individually based on its specific characteristics rather than applying a uniform approach. The control section identifies which unit has the longest preparation operation time and prioritizes that specific unit for removal first. This localized, unit-specific ordering ensures that the unit requiring the most time is prepared first, minimizing overall system downtime while ensuring all units are properly ready for operation.
Data Source
AI summary
A printing system includes: a printing unit; a post-processing unit for performing predetermined post-processing on printed printing paper sheets ejected from the printing unit; a priority setting section, in which a priority of removal of a cause of suspension among the units when operations of each unit are suspended due to a predetermined cause is set in advance; and an informing section for informing the user to remove the cause of suspension according to the priority set in the priority setting section.