Dual-Pathway Medium Transport for Sheet Inversion
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Solution Overview
Problem
Existing recording apparatuses face inefficiencies in throughput due to the need for larger rollers to handle larger sheets, which also affect the transportation of smaller sheets, leading to increased travel distance and time for smaller sheets.
Innovation Solution
A medium transporting device with dual pathways, where a first roller inverts the medium and a second roller applies a transporting force, allowing for selection of the pathway based on the medium's length, enabling shorter travel distances and times for smaller sheets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a large roller is used to invert large sheets, then large sheets can be inverted properly, but small sheets travel an extra distance and inversion time increases
Solution Approach 1:
The inversion pathway is divided into two separate pathways: a first inversion pathway for large sheets and a second inversion pathway for small sheets. This segmentation allows each pathway to be optimized for its specific sheet size, preventing small sheets from traveling unnecessary distances while maintaining the ability to handle both large and small sheets effectively.
Solution Approach 2:
The system dynamically selects which inversion pathway to use based on the detected sheet size. A sheet size detection unit identifies whether the sheet is large or small, and the control unit accordingly activates either the first inversion pathway (using the large roller) or the second inversion pathway (using a smaller roller), optimizing inversion time for each case.
2Device complexity
If a single inversion pathway is used for all sheet sizes, then the structure is simple, but throughput declines due to increased travel distance for small sheets
Solution Approach 1:
The single inversion pathway is segmented into two separate pathways with different roller sizes. This segmentation increases structural complexity but eliminates the throughput bottleneck caused by small sheets traveling unnecessary distances, as each pathway is optimized for its designated sheet size.
Solution Approach 2:
The system dynamically routes sheets through the appropriate pathway based on size detection. This dynamic selection mechanism ensures that small sheets use the optimized second pathway with the smaller roller, maintaining high throughput while large sheets continue to use the first pathway.
3Adaptability or versatility
If small sheets are transported through the inversion pathway designed for large sheets, then the same pathway handles all sizes, but the travel distance increases and throughput decreases
Solution Approach 1:
The universal inversion pathway is segmented into size-specific pathways. Instead of one pathway attempting to handle all sheet sizes, separate pathways are created where the second pathway is specifically optimized for small sheets, eliminating unnecessary travel distance and improving throughput for small sheet processing.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution allows for efficient inversion and transportation of sheets of different sizes, improving throughput by reducing unnecessary travel distances and times, particularly for smaller sheets.
Implementation Method 1
a second roller having a function of applying a transporting force to the medium using an outer peripheral surface of the second roller that faces both a pre-inversion medium transporting pathway and a post-inversion medium transporting pathway
Data Source
AI summary
A medium transporting device includes a first roller that inverts a medium supplied from a processing section side, the processing section processing the medium; a second roller that is located closer to the processing section than the first roller, the second roller having a function of inverting the medium supplied from the processing section side and a function of applying a transporting force to the medium using an outer peripheral surface of the second roller that faces both a pre-inversion medium transporting pathway for transporting a medium that has not been inverted by the first roller and a post-inversion medium transporting pathway for transporting a medium that has been inverted by the first roller; a medium transporting pathway that causes the medium supplied from the processing section side to be inverted along the second roller and causes the medium thus inverted to be supplied to the processing section side.