Transport Device Curved Sandwiching Region Curl Correction
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Solution Overview
Problem
Existing curling correction devices for sheet-like media in image forming apparatuses face inefficiencies due to increased width of both sandwiching regions in the transport direction, leading to poor curling correction and complex structures.
Innovation Solution
A transport device with a first and second transport member, and a changing unit that adjusts the positional relationship between them to increase the width of one sandwiching region without increasing the other, forming curved surfaces to correct curling in opposite directions, thereby simplifying the structure and improving curling correction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If both the first sandwiching region and the second sandwiching region are increased in width in the transport direction, then the structure becomes more complex, but poor curling correction occurs
Solution Approach 1:
The invention makes the width of the sandwiching regions dynamically adjustable by introducing a changing unit that can vary the positional relationship between the first and second transport members. This allows the system to adapt the sandwiching region widths according to different curling correction needs, rather than being fixed or continuously increasing, thus resolving the contradiction between correction quality and structural complexity
Solution Approach 2:
The invention changes the parameter of sandwiching region width from a static or continuously increasing value to a controllable variable parameter. By using the changing unit to adjust the positional relationship between transport members, the system can optimize the width parameters of sandwiching regions for different curling conditions, achieving good curling correction without unnecessary structural complexity
2Manufacturing precision
If the width of one sandwiching region is increased without increasing the other, then curling correction is improved, but the positional relationship control becomes more difficult
Solution Approach 1:
The invention introduces a changing unit as an intermediary mechanism between the first and second transport members. This intermediary device simplifies the control of positional relationships by providing a dedicated mechanism (such as a movable support or adjustable mounting) that makes it easier to adjust the width of sandwiching regions without directly manipulating the complex interaction between both transport members
Solution Approach 2:
The invention segments the control of sandwiching region widths by allowing independent adjustment of the first and second sandwiching region widths through the changing unit. This segmentation enables precise control over each region's width separately, making it easier to achieve the desired positional relationship without having to coordinate both regions simultaneously
Data Source
AI summary
A transport device includes a first transport member that orbits in a predetermined direction and transports a sheet-like medium; a second transport member that forms a first sandwiching region that is curved and a second sandwiching region that is curved in a direction opposite to the first sandwiching region between the first transport member and the second transport member, and sandwiches and transports the medium in the first sandwiching region and the second sandwiching region; and a changing unit that changes a positional relationship between the first transport member and the second transport member so as to increase a width of the other of the first sandwiching region and the second sandwiching region in a transport direction of the medium without increasing a width of one of the first sandwiching region and the second sandwiching region in the transport direction of the medium.