CN1533148A - clamping mechanism of automatic paper feeder - Google Patents

Abstract

A scanner includes a hook slot and an automatic paper feeder. The hook slot is arranged on the side of the scanner. The automatic paper feeder is provided with a hook and a force applying part, the hook is used to buckle with the hook slot so that the automatic paper feeder and the scanner are combined, and applying force on the force applying part can make the automatic paper feeder and the scanner separate. The scanner may also include a guide slope, which is arranged above the hook slot, and the hook can be buckled with the hook slot through the guide slope.

Description

Clamping Mechanism for Automatic Document Feeder

technical field

The invention relates to a clamping mechanism of an automatic paper feeder, in particular to a clamping mechanism of an automatic paper feeder applied in a scanner.

Background technique

A scanner is a device that captures images to scan photos, text pages, graphics and illustrations, and even three-dimensional objects such as coins or textiles, and converts them into digital formats that can be displayed, edited, stored and output by computers. Scanners can do a lot of work, such as: combining art graphics and photos in documents; scanning text into word processing software to save retyping time; scanning fax documents into databases or word processing software for storage; Add lively and lively images to multimedia; integrate image information in presentations so that they can express the theme more effectively, etc.

Many advantages make the scanner an indispensable peripheral device for general personal computer users or company lines. One example is a sheet-fed scanner with an automatic sheet feeder. The automatic document feeder not only enables the paper to be scanned to be fed into the scanning platform of the scanner automatically and conveniently, but also enables the scanner to scan documents quickly.

The working principle of the paper-fed scanner is that the document to be scanned is fed into the scanner platform by the automatic paper feeder configured on the scanner. Then, through the relative movement between the document to be scanned and the optical module, the light emitted by the light source in the optical module is irradiated on the document to be scanned to reflect the reflected light. Afterwards, the optical module receives the reflected light signal and converts it into an electrical signal for processing to complete the scanning work.

Generally speaking, the optical path length has a decisive influence on the quality of scanned images. The distance between the document to be scanned and the optical module (that is, the depth of field) is also related to the optical path length. Therefore, how to make the depth of field an appropriate and constant value so that the scanned image has the best quality has become the most urgent problem to be solved for the sheet-fed scanner. If there is a better coupling and fixing method between the automatic document feeder and the scanner, a suitable and constant depth of field can be kept between the document to be scanned and the optical module.

Contents of the invention

The object of the present invention is to provide a clamping mechanism of an automatic document feeder to achieve a proper and constant depth of field.

According to the purpose of the present invention, a clamping mechanism of an automatic document feeder is proposed. Wherein, the hook groove is arranged on the side of the scanner. The automatic document feeder is equipped with a hook and a force application part. The hook is used to engage with the hook groove so that the automatic document feeder can be combined with the scanner, and applying force to the force application part can make the automatic document feeder The paper tray is detached from the scanner. The scanner can also include a guiding slope, the guiding slope is arranged above the hook groove, and the hook can be engaged with the hook groove through the guiding slope.

Description of drawings

FIG. 1A is a perspective view of an automatic document feeder clamped on a scanner according to a preferred embodiment of the present invention;

FIG. 1B is a schematic cross-sectional view corresponding to the separation of the automatic document feeder and the scanner in FIG. 1A;

Fig. 1C is a schematic diagram of hooks and hook grooves fastened together;

FIG. 1D is a schematic diagram of applying force to the force-applying portion to make the hook disengage from the hook groove.

Detailed ways

The clamping mechanism of the automatic document feeder provided by the present invention utilizes the hook disposed on the automatic document feeder to engage with the hook groove disposed on the scanner, so that the automatic document feeder can be effectively fixed on the scanner. And because of this fixing method, an appropriate and constant depth of field can be obtained to improve the scanning quality of the scanned image.

Please refer to FIG. 1A , which shows a perspective view of an automatic document feeder clamped on a scanner according to a preferred embodiment of the present invention. Two sides of the automatic document feeder 100 have hooks 110 and force application parts 120 . The two sides of the scanner 130 have guiding slopes 140 and hook grooves 150 .

The automatic document feeder 100 and the scanner 130 were originally separated. The combination of the automatic document feeder 100 and the scanner 130 is by pressing the automatic document feeder 100, so that the hook 110 can go down along the guide inclined surface 140 with an inclined angle, and is opposite to the hook groove 150 located below the guide inclined surface 140. Fasten and combine.

During the downward movement of the hook 110 along the guide slope 140 , the hook 110 is slightly and gradually stretched apart as the downward displacement increases. When the hook 110 slides to the hook groove 150 , the hook 110 firmly buckles the hook groove 150 , so that the automatic document feeder 100 and the scanner 130 are combined together.

The force applying part 120 on the automatic document feeder 100 has the function of detaching the automatic document feeder 100 from the scanner 130 . That is, pressing the force application portion 120 with force can make the hook 110 be stretched apart by force. The hook 100 stretched by force is no longer restricted by the hook groove 150 , if force is applied to lift the automatic document feeder 100 upwards, the automatic document feeder 100 can be separated from the scanner 130 .

Please refer to FIG. 1B , which shows a schematic cross-sectional view of the separation of the automatic document feeder and the scanner corresponding to FIG. 1A . The hook 110 of the automatic document feeder 100 is engaged with the hook groove 150 of the scanner 130 through the guide slope 140 , so as to achieve the purpose of combining the automatic document feeder 100 and the scanner 130 .

FIG. 1C shows a schematic diagram after the hook 110 is fastened to the hook groove 150 , and FIG. 1D shows a schematic diagram of applying a force F on the force application portion 120 to disengage the hook 110 from the hook groove 150 .

In the above-mentioned preferred embodiment, both the guiding slope 140 and the hooking groove 150 can be integrally formed with the scanner 130 . The hook 110 can be integrally formed with the automatic document feeder 100 .

The position of the hook groove 150 is fixed on the scanner 130 and will not change. Therefore, as long as the hook 110 is engaged with the hook groove 150 , the relative position between the automatic document feeder 100 and the scanner 130 can be determined and will not change. Therefore, the depth of field between the document to be scanned (not shown in the figure) and the optical module (not shown in the figure) can be fixed. And if the depth of field is appropriate, it can be established that the documents to be scanned are fed into the automatic document feeder 100 each time, and the scanned images scanned by the scanner 130 can have the best scanning quality.

The clamping mechanism of the automatic document feeder disclosed in the above-mentioned embodiments of the present invention is applied in a scanner, and its advantage is that there is an appropriate and constant depth of field between the document to be scanned and the optical module. Accordingly, the scanner can scan out the scanned image with the best image quality according to the document to be scanned fed by the automatic document feeder.

In summary, the present invention has been disclosed in combination with the above preferred embodiment, but it is not intended to limit the present invention. Any person skilled in the art can make various modifications and changes without departing from the spirit and scope of the present invention. modification, so the protection scope of the present invention should be defined by the claims.

Claims (5)

1. scanner comprises:

One colludes groove, is disposed at the side of this scanner; And

One automatic paper feeder comprises:

One trip is disposed on this automatic paper feeder, and this trip is in order to collude the groove snapping with this, so that this automatic paper feeder combines with this scanner; And

One force section is disposed on this automatic paper feeder, forces in this force section this automatic paper feeder and this scanner are broken away from.

2. scanner as claimed in claim 1 wherein also comprises a guide ramp, and this guide ramp is disposed at this top of colluding groove, and this trip colludes groove by this guide ramp and this and is interlockingly connected.

3. scanner as claimed in claim 2, wherein this guide ramp and this scanner are one-body molded.

4. scanner as claimed in claim 1, wherein this colludes groove and this scanner is one-body molded.

5. scanner as claimed in claim 1, wherein this trip and this automatic paper feeder are one-body molded.

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