Sheet Transport Device with Retrieval Space for Small Sheets
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Solution Overview
Problem
Existing sheet transport devices and image reading systems face difficulties in efficiently retrieving and organizing small-size sheets, such as business cards, due to the lack of a dedicated retrieval space, leading to disorderly stacking and accessibility issues.
Innovation Solution
A sheet transport device with a sheet accommodation section that includes a recessed area for small-size sheets, integrated with a retrieval space accessible from the upstream direction, allowing for organized stacking and easy retrieval by exposing the transport path in the opposite direction of the loading path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a sheet accommodation section is provided without a retrieval space, then small-size sheets can be accommodated, but the sheets cannot be retrieved easily and stacking becomes disorderly
Solution Approach 1:
The sheet accommodation section is divided into two functional zones: a loading area where sheets are deposited from the transport path, and a retrieval space accessible from the upstream direction. This segmentation allows sheets to be accommodated and retrieved through different access points, enabling easy retrieval without requiring complex mechanical mechanisms.
Solution Approach 2:
The retrieval space is created by exposing the transport path in the opposite direction to the loading direction, effectively utilizing the third dimension (depth) of the sheet accommodation section. This allows users to retrieve sheets from the front (upstream) while sheets are loaded from the back (downstream), eliminating the need for complex retrieval mechanisms.
2Area of stationary object
If sheets are accommodated in a compact output tray, then space is saved, but accessibility and retrieval of sheets become difficult
Solution Approach 1:
The output tray is segmented into a compact accommodation section for space efficiency and a dedicated retrieval space for accessibility. The retrieval space is positioned at the upstream end where sheets first enter the accommodation section, allowing users to access and retrieve sheets easily without requiring the entire tray to be large or open.
Solution Approach 2:
Instead of providing access to sheets from the downstream end (where the tray opening typically is), the invention provides access from the upstream end through the retrieval space. This inverted access approach allows compact tray design while maintaining easy sheet retrieval, as users can reach in from the front to grab sheets without moving other sheets.
3Productivity
If a dedicated retrieval space is provided for small-size sheets, then retrieval efficiency improves, but the device structure becomes more complex
Solution Approach 1:
The sheet accommodation section serves multiple functions: it accommodates sheets of various sizes, provides a dedicated retrieval space for efficient sheet access, and maintains the transport path integration. By making the accommodation section multi-functional rather than adding separate dedicated structures, the invention improves retrieval efficiency without significantly increasing device complexity.
Solution Approach 2:
The retrieval space is designed to be dynamically accessible from the upstream direction, allowing users to retrieve sheets at any time during operation. This dynamic access capability improves retrieval efficiency compared to static storage designs, while the overall structure remains integrated with the existing transport path rather than requiring additional complex mechanisms.
Data Source
AI summary
A sheet transport device includes a transport unit, a load section, and a sheet accommodation section. The transport unit has a transport path along which a sheet read at a read position is transported to an output unit. The sheet output by the output unit is loaded onto the load section. The sheet accommodation section is disposed downstream in an output direction of the sheet from an inner wall surface extending upward adjacent to the load section and has a recess capable of accommodating a sheet of a predetermined minimum size. A retrieval space through which the sheet accommodated in the sheet accommodation section is retrievable is provided by exposing the transport path in a direction opposite to a loading direction of the sheet.