Medium Transport Device Skew Correction Flat Posture
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Solution Overview
Problem
Existing medium transport devices face inefficiencies in correcting medium inclination, particularly when the medium is transported in a curved posture, leading to insufficient correction and potential misalignment during printing processes.
Innovation Solution
A medium transport device comprising a positional corrector for correcting the medium's position in the width direction and an inclination corrector positioned on the upstream side, where the medium is transported in a flat posture, using skew correction rollers and an abutment gate for precise skew correction, allowing for independent control of roller speeds and positions to adjust the medium's inclination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the medium is transported in a curved posture for inclination correction, then the correction process can be performed, but the correction accuracy becomes insufficient
Solution Approach 1:
The medium is first transported in a flat posture through the inclination corrector before being subjected to curved transport for positional correction. This preliminary flattening action ensures that the medium is properly positioned and flattened before any curvature is introduced, thereby maintaining correction accuracy
Solution Approach 2:
The correction process is divided into two distinct stages: first, inclination correction in a flat posture using the inclination corrector; second, positional correction in a curved posture using the positional corrector. This segmentation allows each stage to optimize for its specific correction type without interference from the other
2Manufacturing precision
If the medium is transported in a flat posture for inclination correction, then the correction accuracy is improved, but the device complexity increases
Solution Approach 1:
The inclination corrector and positional corrector are merged into a single integrated device with a shared housing structure. Both correctors utilize common components such as the housing, support rollers, and drive mechanisms, reducing overall device complexity despite the two-stage correction process
Solution Approach 2:
The correction device performs multiple functions within a single unit: it provides both inclination correction (skew correction) and positional correction (lateral registration). The shared housing and support structures serve both correction stages, making the device more versatile without proportionally increasing complexity
Data Source
AI summary
A medium transport device includes a positional corrector configured to transport a medium and correct a position of the medium in a width direction of the medium by moving the medium in the width direction, and an inclination corrector configured to transport the medium and correct an inclination of the medium relative to a transport direction of the medium on an upstream side of the positional corrector in the transport direction, the inclination corrector being disposed at a position where the medium is transported in a flat posture.