Sheet Post-Processing Apparatus Binding Time Measurement
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Solution Overview
Problem
In sheet post-processing apparatuses, the post-processing time calculation often results in errors due to assuming a maximum binding time, leading to waiting times even when binding is completed early, as the actual processing time varies over time.
Innovation Solution
The sheet post-processing apparatus measures the processing time during the first binding and notifies the image forming apparatus, allowing for accurate calculation of post-processing time, which can be adjusted for subsequent bindings, reducing waiting times by reflecting the measured time in subsequent jobs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the post-processing time is calculated using a predetermined maximum binding time, then the calculation is simple, but waiting time occurs even when binding is completed early
Solution Approach 1:
The system performs preliminary measurement of the actual binding time during the first binding operation and stores this measured value. This preliminary action allows subsequent post-processing time calculations to use the actual measured time rather than a conservative maximum estimate, thereby eliminating unnecessary waiting time while maintaining calculation simplicity.
Solution Approach 2:
The system implements a feedback mechanism where the actual binding time measured during the first binding operation is fed back into the time calculation system. This feedback loop allows the post-processing time to be dynamically adjusted based on actual performance data, resolving the contradiction between using a fixed maximum time (simple but causes waiting) and measuring actual time (accurate but requires additional measurement).
2Measurement precision
If the binding time is measured during the first binding, then accurate post-processing time can be calculated, but the system complexity increases
Solution Approach 1:
The binding mechanism performs self-measurement of its own operation time through built-in timing functionality. The control unit automatically measures the binding time during the first binding operation without requiring external measurement devices. This self-service approach achieves accurate measurement while minimizing additional system complexity.
Solution Approach 2:
The control unit that already exists for managing the binding operation is extended to also perform the timing and measurement functions. By making the control unit multi-functional (managing both binding control and time measurement), the system achieves accurate measurement capability without adding separate dedicated measurement hardware, thus limiting the increase in system complexity.
Data Source
AI summary
A sheet post-processing apparatus includes a control unit. When performing binding for binding a plurality of sheets a plurality of times continuously, the controller measures the processing time required for the binding during first binding and notifies an image forming apparatus of a post-processing time including the measured processing time.