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US 2003/0197913 A1Published application
Duplex scanning device
AssigneeSeiko Epson Corporation
InventorsKatsuyuki Endo, Hideki Furihata
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AssigneeSeiko Epson Corporation
InventorsKatsuyuki Endo, Hideki Furihata
Estimating the term…
A compact duplex scanner for scanning both sides of an original document scans a document smoothly without paper jams. A platen roller 8 is located opposite an image sensor 7 for scanning a paper 15 held therebetween as it is transported through a paper feed path 2b. The image sensor 7 and platen roller 8 are mounted on a rotary frame 90 designed to move circularly as a single unit around a rotary shaft positioned transversely to the paper feed path 2b. After the paper 15 is carried in a forward direction P and the front 15a of the paper 15 is scanned, the rotary frame 90 rotates 180 degrees, and the paper 15 is carried in a reverse direction to scan the back 15b.
A scanning device for scanning both sides of a single-sheet original document, comprising:
Dependencies are inferred from the claim text.
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With refeeding for double-sided scanning, e.g. using one scanning head for both sides of a sheet: inverting the scanning elements with respect to…
Conveying sheets before or after scanning: with refeeding for double-sided scanning, e.g. using one scanning head for both sides of a sheet
Conveying sheets before or after scanning: to the scanning position
From the scanning position: along at least a part of the same path as transport to the scanning position
Term end not estimated
1. Field of the Invention
The present invention relates to a scanning device used in products such as facsimile machines, scanners, and multi-function printers (MFP), and relates more particularly to a duplex scanning device for scanning both sides of an original document.
2. Description of the Related Art
FIG. 1 is a side view of a scanning device according to a preferred embodiment of the present invention showing the position from which scanning of the front of an original document begins;
FIG. 2 is a side view of the same embodiment showing the rotary frame being turned in order to scan the back of an original document;
FIG. 3 is a side view of the same embodiment showing the rotary frame reversed to the position from which scanning of the back of the original document begins;
A preferred embodiment of a scanning device according to the present invention is described below with reference to the accompanying figures.
FIG. 1 to FIG. 4 illustrate the configuration and operation of a scanning device according to this preferred embodiment of the invention; FIG. 5 and FIG. 6 are perspective views showing major components of the rotation mechanism of the same embodiment; and FIG. 7 and FIG. 8 are perspective views showing the scanner part in the same embodiment.
As shown in FIG. 1, a scanning device 1 according to this embodiment of the invention has a paper insertion opening 2a for receiving inserted paper (original document) 15 positioned on one end of the box-shaped housing 2 (also referred to as a stationary frame below), and a paper feed path (transportation path) 2b passing straight through the housing 2 from the paper insertion opening 2a to the paper exit 2c at the opposite end of the housing 2. This paper exit 2c enables the paper 15 to be temporarily ejected from the housing 2. A form sensor 3 is positioned near the paper insertion opening 2a for detecting the paper 15. A first feed roller pair 4 is positioned near the paper exit 2c of the housing 2.