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Automatic document feeder having detachable sheet-pressing slice

Inactive Publication Date: 2008-11-27
PRIMAX ELECTRONICS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007]It is an object of the present invention to provide an automatic document feeder having a detachable sheet-pressing slice on a lower part of the automatic document feeder, in which the sheet-pressing slice is detachable and replaceable to be easily refreshed in order to overcome the problem of refreshing the fixed sheet-pressing slice in the prior art.

Problems solved by technology

This means of manually feeding the paper sheets is time-consuming and laboring.
The bent portion may adversely affect the scanning quality of the scanning apparatus 4.
Therefore, the maintenance of the automatic document feeder 1 is complicated.

Method used

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  • Automatic document feeder having detachable sheet-pressing slice
  • Automatic document feeder having detachable sheet-pressing slice
  • Automatic document feeder having detachable sheet-pressing slice

Examples

Experimental program
Comparison scheme
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first embodiment

[0031]Hereinafter, the operations of the detachable sheet-pressing slice 22 will be illustrated with reference to the schematic partial enlarged cross-sectional views of FIGS. 3A˜3D according to the present invention.

[0032]In FIG. 3A, the detachable sheet-pressing slice 22 has been mounted on the lower part of the sheet-feeding mechanism 21 of the automatic document feeder 2 for pressing the document S passing through the scanning window 40. As shown in FIG. 3B, the detachable sheet-pressing slice 22 is separated from the automatic document feeder 2. The detachable sheet-pressing slice 22 includes a fixing member 220 and a sheet-pressing member 221. The fixing member 220 is fixed on the lower part of the sheet-feeding mechanism 21 and used to support the sheet-pressing member 221. The sheet-pressing member 221 imparts a downward pressing force to the document S, thereby preventing the document S from rising up when passing through the scanning window 40 of the scanning apparatus 4. ...

second embodiment

[0036]In the automatic document feeder, the complementary engaging elements include the hook structure 3100 protruded from an inner wall of the retaining recess 310 and the concave structure 321 of the sheet-pressing member 320. By engagement of these engaging elements, the detachable sheet-pressing slice 32 is fixed on the lower part of the sheet-feeding mechanism 31. It is noted that, however, those skilled in the art will readily observe that numerous modifications and alterations may be made while retaining the teachings of the invention. For example, as shown in FIG. 4B, one or more salient structures 322 are protruded from the sheet-pressing member 320. The salient structures 322 are sustained against the inner wall of the of the retaining recess 310, thereby further facilitating fixing the detachable sheet-pressing slice 32 on the lower part of the sheet-feeding mechanism 31.

[0037]In the above embodiments, the concave structures 2101, 2200 and 321 are indentations. Alternativ...

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Abstract

The present invention provides an automatic document feeder having a detachable sheet-pressing slice. The automatic document feeder is mounted on a scanning apparatus having a scanning window. By means of the automatic document feeder, multiple documents are successively transported across the scanning window of the scanning apparatus to perform the scanning operation. The automatic document feeder includes a casing and a sheet-feeding mechanism. The detachable sheet-pressing slice is disposed at a lower part of the sheet-feeding mechanism. In a case that the detachable sheet-pressing slice is damaged, only the detachable sheet-pressing slice needs to be detached from the automatic document feeder and replaced with a new one. As a consequence, the maintenance of the detachable sheet-pressing slice is very easy and speedy.

Description

FIELD OF THE INVENTION[0001]The present invention relates to an automatic document feeder, and more particularly to an automatic document feeder having a detachable sheet-pressing slice.BACKGROUND OF THE INVENTION[0002]Scanning apparatuses are commonly used for scanning for example paper sheets. The scanned images can be converted into digital electronic files, which are then stored in a computer. Conventionally, for scanning several paper sheets, the paper sheets should be manually fed into the scanning apparatus one by one. This means of manually feeding the paper sheets is time-consuming and laboring. Nowadays, the scanning apparatus usually has an automatic document feeder for successively and continuously feeding many paper sheets. After a stack of papers to be scanned are placed on the sheet input tray of the automatic document feeder, the sheet-feeding mechanism of the automatic document feeder will successively transport the paper sheets across the scanning window of the sca...

Claims

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Application Information

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IPC IPC(8): B65H7/02
CPCB65H5/36B65H2404/6942B65H2801/39
Inventor LEE, HSIN-WEN
Owner PRIMAX ELECTRONICS LTD
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