Image scanning device and image scanning equipment

Abstract

The present invention provides an image scanning device, comprising a shell, a paper feed roller, a transparent plate, a light bar and an elastic support member. The shell has a paper feed channel, which is connected to the outlet and the inlet on the shell surface. The transparent plate includes a first surface and a second surface relative to each other, and the first surface faces the paper feed roller. The light bar is located on the second surface of the transparent plate and is close to the outlet. The light bar includes a substrate and a plurality of light-emitting components. The light-emitting components are located on the substrate, wherein the paper feed roller is projected onto the light bar in the normal direction of the substrate, and there is a scanning interval between the projection and the light-emitting components. One end of the elastic support member is fixed to the shell, and the other end is supported on the transparent plate to provide a pushing force for the light bar and the transparent plate toward the paper feed roller. The present invention also provides an image scanning device having an image scanning device.

Description

Technical Field

[0001] The present invention belongs to the field of image scanning devices, and in particular relates to an image scanning device which moves a document by entraining it with a single driving shaft wheel. Background Art

[0002] Image scanning equipment is widely used in various fields, please refer to Figure 1 , a cross-sectional view of an embodiment of a conventional image scanning device. In this embodiment, multiple axles 6 are positioned adjacent to a photosensitive device 7 (CIS) to carry the paper 4 to be scanned. These axles 6 include a passive axle 61 and an active paper feed axle 62. Passive axle 61 is located on the same side as the photosensitive device 7. With this structure, problems such as up and down movement in the paper feed path 8, wrinkling of the paper 4, and paper jams are common, resulting in unclear scanned images.

[0003] Also, see Figure 2 , a cross-sectional view of another embodiment of a conventional image scanning device. During use, conventional image scanning equipment simultaneously moves the paper 4 along the axle 6 and faces the scanning light bar for scanning. Because scanning position P1 (where the scanning light bar scans the paper) is located tangent to the axle 6 and the substrate 5 (e.g., a glass plate), long-term use can cause the surface of the substrate 5 of the scanning light bar to become stained and ink-laden, making it difficult to clean. This can affect the quality of subsequent image scans. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides an image scanning device suitable for scanning documents. The image scanning device includes a housing, a paper feed roller, a transparent plate, a light bar, and an elastic support member.

[0005] The shell has a paper feeding channel which is connected to an outlet and an inlet on the shell surface. The paper feeding wheel is arranged on the shell and is partially located in the paper feeding channel.

[0006] The transparent plate is arranged in the shell and is at least partially located in the paper feeding channel. The transparent plate includes a first surface and a second surface relative to each other, and the first surface faces the paper feeding roller. The document enters from the entrance to enter between the paper feeding roller and the first surface. The light bar is located on the second surface of the transparent plate and is close to the exit. The light bar includes a substrate and a plurality of light-emitting components. The plurality of light-emitting components are distributed on the substrate in the extension direction of the substrate, wherein the paper feeding roller is projected onto the surface of the light bar in the normal direction of the substrate, and there is a scanning interval between this projection and the light-emitting components in the extension direction. One end of the elastic support is fixed to the shell, and the other end is supported on the transparent plate to provide a pushing force for the light bar and the transparent plate toward the paper feeding roller.

[0007] In one embodiment of the above-mentioned image scanning device, the scanning interval is less than 5 mm.

[0008] For the image scanning device described above, in one embodiment, the scanning interval is in the range of 2-3 mm.

[0009] In one embodiment of the image scanning device described above, the housing further includes a base, the base includes a groove, the transparent plate covers the notch of the groove, the light bar and the elastic support member are located in the groove, and the elastic support member is connected to the light bar.

[0010] As for the image scanning device described above, in one embodiment, the groove includes two extension walls extending from the sidewalls of the groove and respectively located above the light bar.

[0011] As for the image scanning device described above, in one embodiment, the shell includes an upper shell and a lower shell, one end of the upper shell is pivotally connected to the lower shell, the paper feeding wheel is located in the upper shell, the transparent plate, the light bar and the elastic support are located in the lower shell, and the upper shell and the lower shell are closed to form a paper feeding channel.

[0012] The present invention further provides an image scanning device, comprising any one of the above-mentioned image scanning devices and a multi-function printer, wherein the image scanning device is installed in the multi-function printer.

[0013] As for the image scanning device described above, in one embodiment, the image scanning device is located on one side of the MFP, the entrance is located above the exit, and the connection direction between the entrance and the exit is perpendicular to the ground.

[0014] As in the image scanning device described above, in one embodiment, the multi-function printer includes two passive drive axles and two active drive axles, the two passive drive axles being located on either side of a paper feed roller and being co-tangent to the paper feed roller in the same plane; the two active drive axles being located on either side of a transparent plate and being co-tangent to the plane where the first surface of the transparent plate is located.

[0015] The image scanning device of the present invention has a single drive shaft wheel (paper feed wheel), and the projection of the paper feed wheel on the transparent plate and the arrangement line of the light-emitting components have a scanning gap. Therefore, during scanning, the document will first be carried by the paper feed wheel and then pass through the scanning light bar. Through this structure, the problem of the transparent plate becoming dirty after long-term use can be effectively solved. It can also make the document appear smooth and wrinkle-free during the scanning process, so as to obtain a clear image, effectively solving the problems of the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0017] Figure 1 is a cross-sectional view of an embodiment of a conventional image scanning device;

[0018] Figure 2is a cross-sectional view of another embodiment of a conventional image scanning device;

[0019] Figure 3 is a schematic diagram of the appearance of an embodiment of the image scanning device of the present invention;

[0020] Figure 4 This is a schematic diagram of the appearance of an embodiment of the image scanning device of the present invention when the housing is opened;

[0021] Figure 5 yes Figure 3 In the embodiment shown, a cross-sectional view taken along line 5-5;

[0022] Figure 6 is a schematic diagram of the appearance of an embodiment of the image scanning device of the present invention;

[0023] Figure 7 It is a cross-sectional view of another embodiment of the image scanning device of the present invention.

[0024] Description of Figure Numbers:

[0025] 100: Image scanning equipment;

[0026] 1: Image scanning device;

[0027] 11: Shell;

[0028] 11a: Entrance;

[0029] 11b: Exit;

[0030] 11c: paper feeding channel;

[0031] 111: upper shell;

[0032] 112: lower shell;

[0033] 113: base;

[0034] 1131: groove;

[0035] 1131a: extension wall;

[0036] 1132: notch;

[0037] 12: paper feed wheel;

[0038] 13: transparent plate;

[0039] 131: first surface;

[0040] 132: second surface;

[0041] 14: light bar;

[0042] 141: surface;

[0043] 15: elastic support member;

[0044] 2: File;

[0045] 3: Office machine;

[0046] 31: Passive drive axle;

[0047] 32: Active drive axle;

[0048] 4: Paper;

[0049] 5: Substrate;

[0050] 6: axle;

[0051] 61: Passive axle;

[0052] 62: active paper feeding shaft;

[0053] 7: Photosensitive device;

[0054] 8: Paper feeding channel;

[0055] D: connection direction;

[0056] H: scanning interval;

[0057] F: Pushing force;

[0058] P1: scanning position;

[0059] P2: Scanning position. DETAILED DESCRIPTION

[0060] The following specific embodiments illustrate the embodiments of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this embodiment. On the contrary, the purpose of introducing the invention in conjunction with the embodiment is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will include many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description.

[0061] Directional terms used in the following embodiments, such as up, down, left, right, front, or rear, refer only to the directions in the accompanying drawings. Therefore, the use of directional terms is for illustrative purposes and is not intended to limit the present invention. Furthermore, the term "connected" herein encompasses both direct and indirect structural connections. Thus, if a first device is described as being connected to a second device, this means that the first device may be directly connected to the second device or indirectly connected to the second device via other devices or connections.

[0062] See also Figures 3 to 5 , Figure 3 FIG. 1 is a schematic diagram of the appearance of an image scanning device 1 according to an embodiment of the present invention. Figure 4 FIG. 1 is a schematic diagram of the appearance of an image scanning device 1 according to an embodiment of the present invention when the housing 11 is opened. Figure 5 for Figure 3 In the embodiment shown, a cross-sectional view is shown along line 5-5.

[0063] The image scanning device 1 is suitable for scanning a document 2 (such as Figure 5 As shown in FIG, the image scanning device 1 includes a shell 11, a paper feeding roller 12, a transparent plate 13, a light bar 14 and an elastic support member 15. The shell 11 has a paper feeding channel 11c, and the paper feeding channel 11c is connected to the outlet 11b and the inlet 11a on the surface of the shell 11. The paper feeding roller 12 is arranged in the shell 11 and is partially located in the paper feeding channel 11c. The paper feeding roller 12 is an axle electrically connected to the motor and actively driven. The transparent plate 13 is arranged in the shell 11 and is at least partially located in the paper feeding channel 11c. The transparent plate 13 includes a first surface 131 and a second surface 132 relative to each other, and the first surface 131 faces the paper feeding roller 12. In one embodiment, the transparent plate 13 can be glass, but the present invention is not limited to this. In some embodiments, the transparent plate 13 is a high-strength plastic material.

[0064] When the image scanning device 1 is used, a document 2 such as a paper containing text or patterns enters from the entrance 11a to enter between the paper feed roller 12 and the first surface 131. The light bar 14 is located on the second surface 132 of the transparent plate 13 and is close to the exit 11b. The light bar 14 includes a substrate and a plurality of light-emitting components (not shown), such as LEDs. The plurality of light-emitting components are distributed on the substrate in the extension direction of the substrate, wherein the paper feed roller 12 is projected onto the surface 141 of the light bar 14 in the normal direction of the substrate. There is a scanning interval H between this projection and the light-emitting components in the extension direction, such as Figure 5As shown. That is, the center of the paper feed roller 12 is projected onto the surface of the transparent plate 13 in the direction normal to the transparent plate 13, and the distance between the projections of the center of the light bar 14 and the projections of the light bar 14 in the direction normal to the transparent plate 13 is the same as the scanning interval H. The projection of the center line of the light bar 14 (in the extension direction) onto the surface of the transparent plate 13 is the scanning position P2 of the document 2. With this arrangement, during the scanning process of the document 2, the document 2 first contacts the paper feed roller 12, is driven by the paper feed roller 12, and then is scanned by the light bar 14. This structure allows the document 2 (such as paper) to appear smooth and wrinkle-free during the scanning process, and avoids the problem of dirt and ink on the transparent plate 13 after long-term use.

[0065] In one embodiment, the scanning interval H is less than 5 mm. Preferably, the scanning interval H is in the range of 2-3 mm.

[0066] One end of the elastic support member 15 is fixed to the shell 11, and the other end is supported on the transparent plate 13 to provide a pushing force F for the light bar 14 and the transparent plate 13 toward the paper feed wheel 12. In some embodiments, the elastic support member 15 is a coil spring, and in some embodiments, there are multiple elastic support members 15.

[0067] like Figure 4 and Figure 5 As shown, in this embodiment, the shell 11 includes an upper shell portion 111 and a lower shell portion 112, one end of the upper shell portion 111 is pivotally connected to the lower shell portion 112, the paper feeding wheel 12 is located in the upper shell portion 111, the transparent plate 13, the light bar 14 and the elastic support member 15 are located in the lower shell portion 112, and the upper shell portion 111 and the lower shell portion 112 are closed to form a paper feeding channel 11c.

[0068] In this embodiment, the housing 11 further includes a base 113, which includes a recess 1131. The transparent plate 13 covers a notch 1132 of the recess 1131. The light bar 14 and the elastic support member 15 are located within the recess 1131, and the elastic support member 15 is connected to the light bar 14. Furthermore, the recess 1131 includes two extension walls 1131a extending from the side walls of the recess 1131 and respectively located above the light bar 14.

[0069] As described above, in some embodiments, the elastic support member 15 is directly connected to the light bar 14 to provide a pushing force F for the light bar 14 and the transparent plate 13 toward the paper feed roller 12. In some embodiments, the elastic support member 15 is connected to the bottom wall of the groove 1131 to similarly provide a pushing force F for the light bar 14 and the transparent plate 13, thereby narrowing the paper feed passage 11 c and optimizing the scanning effect of the document 2.

[0070] See also Figure 6, is a schematic diagram of the appearance of an embodiment of the image scanning device 100 of the present invention. The image scanning device 100 includes the image scanning device 1 and the business machine 3 as described above. The image scanning device 1 is installed in the business machine 3 and can be installed inside or outside the business machine 3. The present invention is not limited thereto. Figure 6 In this embodiment, the image scanning device 1 is located on one side of the MFP 3, with the entrance 11a located above the exit 11b, and the connection direction D between the entrance 11a and the exit 11b being perpendicular to the ground. In this way, the document 2 (paper) can be scanned more smoothly and smoothly by the gravity of the document 2 (paper). Figure 5 shown).

[0071] See also Figure 7 , is a cross-sectional view of another embodiment of the image scanning device 100 of the present invention. In this embodiment, the image scanning device 1 is installed inside the multi-function printer 3. The image scanning device 1 can be applied to a multi-function printer 3 having two passive drive axles 31 and two active drive axles 32. Figure 7 As shown, the two passive drive axles 31 are respectively located on both sides of the paper feeding wheel and are co-tangent to the paper feeding wheel in the same plane; the two active drive axles 32 are respectively located on both sides of the transparent plate 13 and are co-tangent to the plane where the first surface 131 of the transparent plate 13 is located. Figure 7 The embodiment shown can be applied to scanning large-sized documents 2. Since the image scanning device 1 is provided, the document 2 can be scanned smoothly and without wrinkles, and the occurrence of black background in the image after scanning can be reduced.

[0072] At least one embodiment of the image scanning device of the present invention has a single drive shaft wheel, namely a paper feed wheel, and a scanning gap is provided between the projection of the transparent plate and the arrangement line of the light-emitting components (i.e., the scanning line). Therefore, during scanning, the document is first carried by the paper feed wheel and then by the scanning light bar. This structure can effectively solve the problem of the transparent plate becoming dirty after long-term use, and can make the document appear smooth and wrinkle-free during the scanning process, so as to obtain a clear image, effectively solving the problems of the prior art. In addition, in one embodiment, the image scanning device is mounted on a business machine, with the connection direction of the inlet and outlet perpendicular to the ground. Scanning in this manner can make the scanning operation smoother due to the effect of gravity.

[0073] In summary, the above embodiments provided by the present invention are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical concepts disclosed herein shall be encompassed by the claims of the present invention.

Claims

1. An image scanning device, characterized in that: Suitable for scanning documents, the image scanning device comprises: The housing has a paper feeding channel, the paper feeding channel communicating with an outlet and an inlet on a surface of the housing; a paper feeding wheel, disposed on the housing and partially located in the paper feeding channel; a transparent plate disposed on the housing and at least partially located in the paper feeding passage; the transparent plate comprises a first surface and a second surface opposite to each other, the first surface facing the paper feeding wheel; The document enters from the entrance to enter between the paper feeding wheel and the first surface; a light bar located on the second surface of the transparent plate and close to the outlet, the light bar comprising a substrate and a plurality of light-emitting components, the plurality of light-emitting components being distributed on the substrate in an extension direction of the substrate, wherein the paper feed wheel is projected onto the surface of the light bar in a normal direction of the substrate, a scanning interval being formed between the projection of the paper feed wheel on the surface of the light bar and the plurality of light-emitting components in the extension direction, a distance between the projection of the center of the paper feed wheel on the first surface of the transparent plate in a normal direction of the transparent plate and the projection of the center of the light bar on the first surface of the transparent plate in a normal direction of the transparent plate being the same as the scanning interval; the center line of the light bar projected onto the first surface of the transparent plate is a scanning position of the document; and An elastic support member has one end fixed to the housing and the other end supported on the transparent plate to provide a pushing force for the light bar and the transparent plate toward the paper feeding wheel.

2. The image scanning device according to claim 1, wherein: The scanning interval is less than 5 mm.

3. The image scanning device according to claim 2, wherein: The scanning interval ranges from 2 to 3 mm.

4. The image scanning device according to claim 1, wherein: in, The shell further includes a base, the base includes a groove, the transparent plate covers the notch of the groove, the light bar and the elastic support member are located in the groove, and the elastic support member is connected to the light bar.

5. The image scanning device according to claim 4, wherein: in, The groove includes two extension walls extending from the side wall of the groove and respectively located above the light bar.

6. The image scanning device according to claim 1, wherein: The shell includes an upper shell and a lower shell, one end of the upper shell is pivotally connected to the lower shell, the paper feeding wheel is located in the upper shell, the transparent plate, the light bar and the elastic support are located in the lower shell, and the upper shell and the lower shell are closed to form the paper feeding channel.

7. An image scanning device, characterized in that: Include: The image scanning device according to any one of claims 1 to 6; and A multi-function printer, wherein the image scanning device is installed in the multi-function printer.

8. The image scanning device according to claim 7, wherein: The image scanning device is located on one side of the MFP, the entrance is located above the exit, and the connection direction between the entrance and the exit is perpendicular to the ground.

9. The image scanning device according to claim 7, wherein: The multi-function printer includes two passive drive axles and two active drive axles, the two passive drive axles are respectively located on both sides of the paper feeding wheel and are co-tangent to the paper feeding wheel in the same plane; the two active drive axles are respectively located on both sides of the transparent plate and are co-tangent to the plane where the first surface of the transparent plate is located.

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