Double-sided scanning device and printer

Abstract

The present application discloses a double-sided scanning device and a printer, wherein the double-sided scanning device comprises: a paper channel, comprising a first scanning section, a C-shaped connecting section and a second scanning section connected in sequence; a first scanning window, arranged on a side of the first scanning section facing the second scanning section; a second scanning window, arranged on a side of the second scanning section facing away from the first scanning section, wherein the first scanning window and the second scanning window are staggered along the moving track of the paper, and the distance between the first scanning window and the second scanning window is less than the length of the paper to be scanned; a first scanning element, arranged outside the first scanning window; and a second scanning element, arranged outside the second scanning window. The present application improves the paper channel of the double-sided scanning device, thereby solving the problems of large structural dimensions and low scanning efficiency of the double-sided scanning device in the prior art due to the excessive length of the paper channel, and the problem of low scanning quality due to the light and shadow being captured by the opposite scanning element due to the scanning element being too close.

Description

Technical Field

[0001] The present application belongs to the technical field of printing equipment, and specifically relates to a double-sided scanning device and a printer using the double-sided scanning device. Background Art

[0002] When using a single-sided scanning device to scan both sides of a paper, the user must manually turn the paper over after scanning one page, and then scan the other page. This scanning method is slow and easily causes the problem of inconsistent paper feeding directions. Therefore, the prior art has developed a double-sided scanning device that can automatically scan both sides of a paper, so that the user can quickly complete the scanning of both sides of a single paper and avoid the problem of inconsistent paper feeding directions.

[0003] In a double-sided scanning device, two scanning elements are usually staggered on both sides of the paper channel, and the two scanning elements are used to scan one side of the paper respectively. At present, one design is to shorten the distance between the two scanning elements so that the two scanning elements can work at the same time, thereby improving the scanning efficiency. However, this design makes the two scanning elements too close, and the light and shadow of the two scanning elements irradiating the paper will affect each other, resulting in poor scanning quality; another design is to increase the distance between the two scanning elements so that the two scanning elements scan the two sides of the paper in turn. Although this design can avoid the influence of light and shadow on the scanning quality, it will also increase the number of components such as plates, connectors, transmission parts, etc., resulting in an increase in the structural size. At the same time, since the two sides of the paper need to be scanned one by one, the scanning efficiency will also be reduced. Summary of the invention

[0004] The purpose of the present application is to provide a double-sided scanning device and a printer using the double-sided scanning device, which can solve the problems of large structural size and low scanning efficiency caused by the long paper channel of the double-sided scanning device in the prior art, and the problem of low scanning quality caused by the light and shadow being captured by the opposite scanning element due to the scanning element being too close.

[0005] According to a first aspect of an embodiment of the present application, a double-sided scanning device is provided, comprising:

[0006] A paper passage provided between the paper inlet and the paper outlet, comprising a first scanning section, a C-shaped connecting section and a second scanning section connected in sequence;

[0007] A first scanning window, provided on a side of the first scanning section facing the second scanning section;

[0008] A second scanning window is arranged on a side of the second scanning section facing away from the first scanning section, and along the moving track of the paper, the first scanning window and the second scanning window are staggered, and the distance between the two is less than the length of the paper to be scanned;

[0009] A first scanning element, disposed outside the first scanning window, for scanning a first side of a paper to be scanned through the first scanning window;

[0010] The second scanning element is disposed outside the second scanning window and is used for scanning the second side of the paper to be scanned through the second scanning window.

[0011] In some optional embodiments, along the moving trajectory of the paper, the distance between the first scanning window and the second scanning window is 1 / 3 to 1 / 2 of the length of the paper to be scanned.

[0012] In some optional embodiments, the double-sided scanning device further includes:

[0013] The controller is connected to the first scanning element and the second scanning element respectively, and is used to control the first scanning element and the second scanning element to operate synchronously to perform double-sided scanning.

[0014] In some optional embodiments, the double-sided scanning device further includes:

[0015] A first transmission mechanism is disposed at a first end of the paper passage, and is used to move the paper to be scanned so as to be fed into the paper passage from the first end;

[0016] The second transmission mechanism is disposed at the second end of the paper passage, and is used for moving the paper to be scanned so as to be fed out from the second end of the paper passage.

[0017] In some optional embodiments, both the first transmission mechanism and the second transmission mechanism are roller sets.

[0018] In some optional embodiments, along the moving trajectory of the paper, the distance between the first transmission mechanism and the second transmission mechanism is smaller than the length of the paper to be scanned.

[0019] In some optional embodiments, the first scanning segment is parallel to the second scanning segment.

[0020] In some optional embodiments, the paper channel is made of metal or a metal film layer is disposed on the outer surface of the paper channel.

[0021] In some optional embodiments, both the first scanning element and the second scanning element are charge coupled devices or contact image sensing elements.

[0022] According to a second aspect of an embodiment of the present application, a printer is provided, comprising a double-sided scanning device as described in any one of the aforementioned embodiments.

[0023] The above technical solution of the present application has the following beneficial technical effects:

[0024] The double-sided scanning device of the embodiment of the present application can solve the problems of large structural size and low scanning efficiency caused by the excessively long paper channel in the double-sided scanning device in the prior art, as well as the problem of low scanning quality caused by the light and shadow being captured by the opposite scanning element due to the scanning elements being too close, by setting a curved section at a position between the two scanning elements in the paper channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of a double-sided scanning device in an exemplary embodiment of the present application;

[0026] In the figure, 1, paper inlet; 2, paper outlet; 10, paper channel; 11, first scanning section; 12, C-line connecting section; 13, second scanning section; 20, first scanning window; 30, second scanning window; 40, first scanning element; 50, second scanning element; 60, first transmission mechanism; 70, second transmission mechanism; 80, paper to be scanned. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below in conjunction with specific implementations and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concepts of the present application.

[0028] In the description of the present application, it should be noted that the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0029] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0030] like Figure 1As shown, according to a first aspect of an embodiment of the present application, a double-sided scanning device is provided, comprising: a paper channel 10 arranged between a paper inlet 1 and a paper outlet 2, comprising a first scanning section 11, a C-shaped connecting section, and a second scanning section 13 connected in sequence; a first scanning window 20, arranged on a side of the first scanning section 11 facing the second scanning section 13; a second scanning window 30, arranged on a side of the second scanning section 13 facing away from the first scanning section 11, along a moving trajectory of the paper, the first scanning window 20 and the second scanning window 30 are staggered, and a distance between the two is less than a length of a paper 80 to be scanned; a first scanning element 40, arranged outside the first scanning window 20, for scanning the first side of the paper 80 to be scanned through the first scanning window 20; a second scanning element 50, arranged outside the second scanning window 30, for scanning the second side of the paper 80 to be scanned through the second scanning window 30.

[0031] In this embodiment, the first scanning section 11, the C-shaped connecting section and the second scanning section 13 of the paper channel 10 can be three parts of a channel or three connected channels. In this embodiment, the paper channel 10 is preferably designed as an integral whole, and the C-shaped connecting section is formed by bending, and its bending angle is determined according to the installation requirements, and can be bent by 120°, 140°, 160°, 180°, etc.

[0032] In this embodiment, the first scanning window 20 and the second scanning window 30 are made of transparent plates, such as glass, hard transparent plastic plates, etc. In this embodiment, the first scanning window 20 and the second scanning window 30 are preferably made of glass.

[0033] In a specific implementation, the steps of the method for manufacturing the double-sided scanning device described in this embodiment include:

[0034] The paper channel 10 is bent to form a C-shaped connecting section and a first scanning section 11 and a second scanning section 13 located at both ends thereof respectively; the first scanning section 11 and the second scanning section 13 are opened and glass is installed respectively to form a first scanning window 20 and a second scanning window 30; the first scanning element 40 and the second scanning element 50 are respectively arranged outside the first scanning window 20 and the second scanning window 30.

[0035] In a specific implementation, the two scanning windows of the double-sided scanning device described in this embodiment are staggered along the paper moving track, but because the staggered distance between the two is less than the length of the paper 80 to be scanned, the paper 80 to be scanned can cover the two scanning windows at the same time during the movement in the paper channel 10, so that the two sides of the paper 80 to be scanned can be scanned by two scanning elements at the same time. At the same time, because the first scanning section 11 and the second scanning section 13 of the double-sided scanning device are connected by a C-shaped connecting section, one of the two scanning windows is flipped. When the two scanning elements scan the two sides of the paper 80 to be scanned at the same time, the light source of one scanning element irradiates the paper through the scanning window to form a light shadow that will not be captured by the other scanning element, thereby not affecting the scanning quality of the other scanning element. Similarly, the light shadow formed by the other scanning element irradiating the paper through the other scanning window will not be captured by the scanning element. Therefore, the double-sided scanning device of the embodiment of the present application can realize double-sided scanning of paper without increasing the channel length, and at the same time, it can avoid the influence of light and shadow on the scanning quality.

[0036] In addition, since the channel length is not increased, the installation space and the devices required for the channel can be saved, which is conducive to reducing the structural size and reducing the manufacturing cost.

[0037] In some embodiments, along the moving track of the paper, the distance between the first scanning window 20 and the second scanning window 30 is 1 / 3 to 1 / 2 of the length of the paper 80 to be scanned.

[0038] In some embodiments, the double-sided scanning device further includes: a controller, connected to the first scanning element 40 and the second scanning element 50 respectively, for controlling the first scanning element 40 and the second scanning element 50 to operate synchronously to perform double-sided scanning.

[0039] In some embodiments, the double-sided scanning device further includes: a first transmission mechanism 60 disposed at the first end of the paper passage 10, used to move the paper 80 to be scanned so that it is fed in from the first end of the paper passage 10; a second transmission mechanism 70 disposed at the second end of the paper passage 10, used to move the paper 80 to be scanned so that it is fed out from the second end of the paper passage 10. In some preferred embodiments, the first transmission mechanism 60 and the second transmission mechanism 70 are respectively connected to a controller and operate synchronously under the control of the controller.

[0040] In some embodiments, the first transmission mechanism 60 and the second transmission mechanism 70 are both roller sets.

[0041] In some embodiments, along the moving track of the paper, the distance between the first transmission mechanism 60 and the second transmission mechanism 70 is less than the length of the paper to be scanned 80. In a specific implementation, after the first transmission mechanism 60 feeds the paper to be scanned 80 into the first end of the paper channel 10, the paper to be scanned 80 can be continuously moved to gradually cover the first scanning window 20 and the second scanning window 30 until the front end of the paper to be scanned 80 enters the action range of the second transmission mechanism 70, so that the scanned paper can continue to move under the action of the second transmission mechanism 70 and finally be fed out of the paper channel 10. This design can further shorten the length of the paper channel 10 and reduce the transmission mechanism required for paper movement.

[0042] In some embodiments, the first scanning segment 11 is parallel to the second scanning segment 13 .

[0043] In some embodiments, the paper channel 10 is made of metal or a metal film layer is provided on the outer surface of the paper channel 10. In a specific implementation, since the first scanning element 40 and the second scanning element 50 are both electronic devices, due to the limitation of the installation space, the distance between the first scanning element 40 and the second scanning element 50 is relatively close, which is easy to generate electromagnetic interference. By using a metal paper channel 10 or providing a metal film layer on the outer surface of the paper channel 10, electromagnetic waves can be effectively blocked, thereby avoiding electromagnetic interference, which is conducive to improving the reliability of the device.

[0044] In some embodiments, the first scanning element 40 and the second scanning element 50 are both charge coupled devices or contact image sensing elements. In this embodiment, the first scanning element 40 and the second scanning element 50 are preferably contact image sensing elements.

[0045] like Figure 1As shown, a double-sided scanning device comprises: a paper passage 10 arranged between a paper inlet 1 and a paper outlet 2, comprising a first scanning section 11, a C-shaped connecting section and a second scanning section 13 connected in sequence; a first scanning window 20, arranged on a side of the first scanning section 11 facing the second scanning section 13; a second scanning window 30, arranged on a side of the second scanning section 13 facing away from the first scanning section 11, along a moving track of the paper, the first scanning window 20 and the second scanning window 30 are staggered, and the distance between the two is less than the length of the paper 80 to be scanned; a first scanning element 40, arranged outside the first scanning window 20, for scanning the first side of the paper 80 to be scanned through the first scanning window 20; a second scanning element 50, arranged on the second scanning window 30 The first transmission mechanism 60 is provided at the first end of the paper passage 10, and is used to move the paper 80 to be scanned so that it can be fed in from the first end of the paper passage 10; the second transmission mechanism 70 is provided at the second end of the paper passage 10, and is used to move the paper 80 to be scanned so that it can be fed out from the second end of the paper passage 10; the controller is connected to the first scanning element 40 and the second scanning element 50 respectively, and is used to control the first scanning element 40 and the second scanning element 50 to operate synchronously to perform double-sided scanning; the controller is also connected to the first transmission mechanism 60 and the second transmission mechanism 70, and is used to control the first transmission mechanism 60 and the second transmission mechanism 70 to operate synchronously;

[0046] Wherein, along the moving track of the paper, the distance between the first transmission mechanism 60 and the second transmission mechanism 70 is smaller than the length of the paper 80 to be scanned.

[0047] In a specific implementation, the operation steps of the double-sided scanning device described in this embodiment include:

[0048] 1. The controller receives a scanning instruction, and controls the first scanning element 40, the second scanning element 50, the first transmission mechanism 60 and the second transmission mechanism 70 to operate synchronously according to the received scanning instruction;

[0049] 2. The first transmission mechanism 60 feeds the paper 80 to be scanned at the paper inlet 1 into the paper passage 10;

[0050] 3. The first transmission mechanism 60 continues to move the paper 80 to be scanned, so that it first passes through the first scanning window 20, and the first scanning element 40 scans the first side of the paper 80 to be scanned;

[0051] 4. The paper 80 to be scanned is continuously moved by the first transmission mechanism 60, and before the scanning of the first side of the paper 80 to be scanned is completed, the paper passes through the second scanning window 30, and the second scanning unit scans the second side of the paper to be scanned;

[0052] 5. The first transmission mechanism 60 continues to move the paper 80 to be scanned, and before the scanning of the first side and the second side of the paper 80 to be scanned is completed, the paper 80 enters the action range of the second transmission mechanism 70;

[0053] 6. The second transmission mechanism 70 drives the paper 80 to be scanned to continue moving until the scanning of the first side and the second side of the paper 80 to be scanned is completed, and the paper 80 to be scanned is fed out from the paper passage 10.

[0054] The embodiment of the present application also provides a printer, comprising the double-sided scanning device as described in any of the above embodiments. The specific structure and beneficial effects of the printer are the same as those described in the above embodiments, and will not be described in detail here.

[0055] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A double-sided scanning device, characterized in that: include: A paper passage provided between the paper inlet and the paper outlet, comprising a first scanning section, a C-shaped connecting section and a second scanning section connected in sequence; A first scanning window, provided on a side of the first scanning section facing the second scanning section; A second scanning window is arranged on a side of the second scanning section facing away from the first scanning section, and along the moving track of the paper, the first scanning window and the second scanning window are staggered, and the distance between the two is less than the length of the paper to be scanned; A first scanning element, disposed outside the first scanning window, for scanning a first side of a paper to be scanned through the first scanning window; A second scanning element is disposed outside the second scanning window and is used to scan the second side of the paper to be scanned through the second scanning window; a controller, connected to the first scanning element and the second scanning element respectively, and used to control the first scanning element and the second scanning element to operate synchronously to perform double-sided scanning; A first transmission mechanism is disposed at a first end of the paper passage, and is used to move the paper to be scanned so as to be fed into the paper passage from the first end; The second transmission mechanism is disposed at the second end of the paper passage, and is used to move the paper to be scanned so as to be fed out from the second end of the paper passage; Along the moving track of the paper, the distance between the first transmission mechanism and the second transmission mechanism is less than the length of the paper to be scanned.

2. The double-sided scanning device according to claim 1, characterized in that: Along the moving track of the paper, the distance between the first scanning window and the second scanning window is 1 / 3 to 1 / 2 of the length of the paper to be scanned.

3. The double-sided scanning device according to claim 1, characterized in that: The first transmission mechanism and the second transmission mechanism are both roller sets.

4. The double-sided scanning device according to claim 1, characterized in that: The first scanning section is parallel to the second scanning section.

5. The double-sided scanning device according to claim 1, characterized in that: The paper passage is made of metal or a metal film layer is disposed on the outer surface of the paper passage.

6. The double-sided scanning device according to claim 1, characterized in that: The first scanning element and the second scanning element are both charge coupled devices or contact image sensing elements.

7. A printer, characterized in that: It comprises a double-sided scanning device as described in any one of claims 1 to 6.

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