Duplex Recording Media Speed Control for Stack Alignment
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Solution Overview
Problem
Poor alignment of recording media on a stack portion in recording apparatuses, particularly in duplex recording scenarios, due to factors other than water content, leading to deterioration in alignment and sliding characteristics.
Innovation Solution
A recording apparatus with a conveyor system controlled by a controller to adjust the movement speed of recording media based on the image-recorded surfaces, where the speed of one recording medium is reduced when both surfaces of successive media are recorded, ensuring proper alignment by maintaining a smaller distance and increased pressing force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the water content of the recording medium is reduced to ensure proper alignment, then alignment is improved, but in duplex recording scenarios alignment deteriorates after a lapse of time
Solution Approach 1:
The patent applies dynamics by making the conveyor speed variable rather than fixed. The controller dynamically adjusts the conveyor speed based on the recording status of the recording medium surfaces. When both surfaces are recorded, the conveyor operates at a lower speed to ensure proper alignment, while other conditions allow normal speed operation. This dynamic adjustment resolves the contradiction by adapting the system behavior to specific operational contexts.
Solution Approach 2:
The patent changes the parameter of conveyor speed based on the recording conditions. By detecting whether both surfaces of successive recording media are recorded, the system adjusts the conveyor speed parameter accordingly. This parameter change allows the system to maintain alignment precision in duplex recording scenarios without requiring reduced water content, thereby resolving the alignment stability issue over time.
2Manufacturing precision
If the movement speed of recording media is reduced to improve alignment, then alignment is improved, but productivity is reduced
Solution Approach 1:
The patent applies local quality by making the speed reduction localized to specific conditions rather than applying it universally. The conveyor speed is reduced only when both surfaces of successive recording media are recorded (duplex recording scenario), while maintaining normal speed for other conditions. This selective application preserves alignment precision where needed without unnecessarily reducing productivity in other scenarios.
Solution Approach 2:
The system dynamically adjusts conveyor speed based on real-time detection of recording conditions. The controller monitors whether both surfaces of successive media are recorded and adjusts speed accordingly. This dynamic control allows the system to optimize between alignment precision and productivity by applying speed reduction only when necessary, rather than maintaining a constant reduced speed that would harm overall productivity.
Data Source
AI summary
A recording apparatus, including: a recording portion configured to record an image on each of recording media; a stack portion on which image-recorded recording media are stacked; a conveyor portion configured to convey each recording medium from a recording position at which the image is recorded toward the stack portion; and a controller configured to control the recording apparatus, wherein the controller is configured to control the conveyor portion such that, where two mutually opposable surfaces of two successive recording media that are to be successively stacked on the stack portion are both image-recorded surfaces on each of which an image has been recorded, a movement speed, when stacked, of one of the two successive recording media that is to be later stacked on the stack portion is made smaller, as compared with an instance where at least one of the two mutually opposable surfaces is not the image-recorded surface.