Receipt Feed Port Structure for Stable Narrow Media Transport
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Solution Overview
Problem
Existing image reading devices face issues with unstable receipt posture during transport, leading to skewing, bending, or buckling, particularly when handling receipts of different width sizes, which affects setup stability and handling.
Innovation Solution
The medium transport device includes a support section with a support surface to stabilize the receipt posture, a small width medium feeding section with a guide for narrower receipts, and a medium pressing section to restrict the receipt's posture during discharge, ensuring stable transport and discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single feed port is used for all medium sizes, then the device structure is simple, but narrow media cannot be properly guided and will buckle or skew during transport
Solution Approach 1:
The feed port is divided into a first feed port for wide media and a second feed port for narrow media. The guide section is segmented with a first guide surface for wide media and a second guide surface for narrow media. This segmentation allows different media widths to be properly guided through appropriate pathways, preventing buckling and skewing while maintaining a relatively simple overall structure.
2Length of moving object
If elongated receipts are fed into the feed port, then the device can handle long media, but the receipts buckle or fall forward resulting in unstable posture
Solution Approach 1:
The guide section acts as an intermediary between the feed port and the transport path. It includes a guide surface that extends from the feed port along the transport direction, providing continuous support for elongated receipts. This intermediary structure prevents the receipts from buckling or falling forward by maintaining stable contact throughout the transport path.
3Adaptability or versatility
If a U-turn path is used for discharge, then the device can discharge media from multiple directions, but the discharged receipt may be bent or buckled and drawn into the feed port again
Solution Approach 1:
The guide section is configured to prevent the discharged receipt from being drawn back into the feed port. The guide surface extends sufficiently far and is positioned to create a physical barrier that stops the receipt before it can buckle and re-enter the feed port. This preliminary anti-action occurs at the point where the receipt exits the transport path, preventing the harmful effect before it can occur.
Data Source
AI summary
A medium transport device 4 includes a feeding section 7 having a first feed port 61 configured to feed a first medium 21 into the housing 5 at an upper section of a housing and a transport section 9 configured to transport the first medium in the transport direction F, wherein the feeding section includes a support section 13, which extends upward from the first feed port, and has a support surface 12 configured to support the first medium to be fed to the first feed port. a small width medium feeding section 27 configured to feed a second medium 22 having a smaller width dimension than the first medium 21, and the small width medium feeding section 27 is disposed at the first feed port 61 and includes a second feed port 28 configured to feed the second medium 22 into the housing and guide sections 31 and 32 configured to guide width direction edge sections 29 and 30 of the second medium.