Finisher Fastening Mechanism Speed Control for Vibration Suppression
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Solution Overview
Problem
Existing fastening devices in image forming apparatuses experience vibration due to simultaneous movement of staple and stapleless fastening mechanisms at the same speed, leading to operational inefficiencies.
Innovation Solution
A post-processing device is designed with a staple fastening device and a stapleless fastening device that move along a guiding part, where the stapleless fastening device operates at a slower speed than the staple fastening device during overlapping movements to reduce vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the stapleless fastening device and staple fastening device move at the same speed along the guiding part, then the device structure is simple and operation is easy, but vibration occurs reducing operational stability
Solution Approach 1:
The patent applies parameter changes by varying the moving speed of the stapleless fastening device relative to the staple fastening device. Specifically, the control unit adjusts the speed parameter of the stapleless fastening device to be different from that of the staple fastening device during overlapping movements, which suppresses vibration and improves operational stability without requiring complex structural modifications
2Reliability
If the stapleless fastening device moves slower than the staple fastening device during overlapping movements, then vibration is suppressed improving operational stability, but the total movement time increases reducing productivity
Solution Approach 1:
The patent applies dynamics by implementing dynamic speed adjustment of the stapleless fastening device based on real-time operational conditions. The control unit dynamically varies the moving speed during different phases of the fastening operation, allowing the system to optimize between vibration suppression and productivity by adapting speeds to specific movement scenarios rather than maintaining fixed speeds
3Device complexity
If both fastening devices move along the same guiding part, then device complexity is reduced and space is optimized, but vibration occurs when movements overlap at same speeds
Solution Approach 1:
The patent resolves the vibration issue while maintaining the simple guiding structure by changing the speed parameter of the stapleless fastening device. The control unit adjusts the speed to differ from the staple fastening device during overlapping movements along the shared guiding part, which suppresses vibration without requiring separate guiding structures or complex mechanical modifications
Data Source
AI summary
A post-processing device includes a staple fastening device that fastens a medium with a staple; a stapleless fastening device that fastens a medium without using the staple; and a guiding part that guides the staple fastening device and the stapleless fastening device such that the staple fastening device and the stapleless fastening device are movable in a width direction of a medium, in which a moving speed of the stapleless fastening device is slower than a moving speed of the staple fastening device when a moving timing of the staple fastening device and a moving timing of the stapleless fastening device overlap each other.