Feed-through multifunctional scanning device

Abstract

A feed type multifunctional scanning device includes a feeding mechanism, a scanning module and a controller. The feeding mechanism includes a pick-up roller and a separating roller which jointly feed a medium into a channel, and a feeding roller set. The scanning module is located downstream of the pick-up roller and the separating roller, wherein the feeding roller set feeds the medium through the scanning module so that the scanning module captures an image of the medium. The controller is electrically connected to the feeding mechanism and the scanning module for controlling the operation of the feeding mechanism and the scanning module. In a first mode, the pick-up roller is reversed and the separating roller is reversed. In a second mode, the pick-up roller is reversed and the separating roller is forward rotated.

Description

Technical Field

[0001] This invention relates to a feed-type multi-functional scanning device, and more particularly to a feed-type multi-functional scanning device capable of scanning general documents and special documents that are thicker than general documents. Background Technology

[0002] Traditional automatic sheet-fed scanners are primarily used for document scanning, especially in the commercial sector, such as banks, post offices, and various companies, to digitize paper documents. Automatic sheet-fed scanners have paper separation rollers at the paper inlet, which separate stacked sheets of paper to ensure that only one sheet enters the scanning channel at a time. Because the optical scanning head typically uses a contact image sensor (CIS) or charge-coupled device (CCD) image sensor, the height (spacing) of the scanning channel is usually very small to ensure image quality.

[0003] If the scanning channel is too large, the paper is prone to excessive drifting or shaking during the scanning process. In this case, the depth of field of the optical scanning head is insufficient, affecting the scanning quality. Therefore, the height of traditional scanning channels is usually designed to be very small, for example, about 0.2 mm to 1.5 mm, or even smaller.

[0004] However, when scanning thicker documents (such as books, pamphlets, passports, magazines, and periodicals), users cannot directly use traditional automatic sheet feeder scanners. Research has revealed two main reasons. First, the thickness of books or pamphlets is often too great to pass through the scanning channels of traditional automatic sheet feeder scanners. Second, when a user opens a book or pamphlet to a specific page and inserts it into the paper tray of a traditional automatic sheet feeder scanner, the paper separation rollers will separate the paper, potentially damaging the pages.

[0005] Therefore, the traditional method for scanning thicker documents such as books, pamphlets, passports, magazines, and periodicals is to use a flatbed scanner. The main procedure is to open the book or pamphlet to a specific page, place it flat on the scanner's platform, and let the scanner head move to perform the scan. These flatbed scanners are relatively bulky. Therefore, if rapid scanning of thick paper or books is required, it may be necessary to alternate between automatic sheet feeder scanners and flatbed scanners, which wastes considerable space in businesses or offices to accommodate more scanners. Summary of the Invention

[0006] Therefore, one object of the present invention is to provide a feed-type multi-functional scanning device capable of scanning general documents and documents such as books.

[0007] To achieve the above objectives, the present invention provides a feed-type multifunctional scanning device, comprising a feed mechanism, a scanning module, and a controller. The feed mechanism includes a paper-feeding roller and a paper-separating roller, which work together to feed media into a channel; and a feed roller assembly. The scanning module is located downstream of the paper-feeding roller and the paper-separating roller, wherein the feed roller assembly feeds the media through the scanning module, enabling the scanning module to capture images of the media. The controller is electrically connected to the feed mechanism and the scanning module, and is used to control the operation of the feed mechanism and the scanning module. In a first mode, the paper-feeding roller rotates in reverse, and the paper-separating roller rotates in reverse. In a second mode, the paper-feeding roller rotates in reverse, and the paper-separating roller rotates in forward.

[0008] The aforementioned feed-type multi-functional scanning device may further include: a first main body; a second main body connected to the first main body, such that the second main body can be in an open and closed state relative to the first main body; and a floating frame, which is floatingly disposed in the second main body to adapt to adjusting the height of the channel, wherein the paper separating roller is disposed in the floating frame and the paper picking roller is disposed in the first main body.

[0009] Through the above embodiments, a multi-functional scanning device can be realized, capable of capturing images from various media. Furthermore, the floating frame provides a compressible and deformable scanning channel structure to accommodate media of varying thicknesses.

[0010] To make the above description of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0011] Figure 1 This is a perspective view of a feed-type multi-functional scanning device according to a preferred embodiment of the present invention.

[0012] Figure 2 for Figure 1 A block diagram of a multi-functional scanning device.

[0013] Figure 3 for Figure 1 A schematic diagram of the operation of the multi-functional scanning device in the first mode.

[0014] Figure 4 for Figure 1 A schematic diagram of the operation of the multi-functional scanning device in the second mode.

[0015] Figure 5 for Figure 1 A partial top view of the multi-functional scanning device.

[0016] Figure 6 for Figure 5 A partial 3D view of the corresponding transmission mechanism.

[0017] Figure 7 for Figure 3 A schematic diagram of the dual-motor drive configuration.

[0018] Figure 8 for Figure 3 A schematic diagram of a single-motor drive configuration.

[0019] Figure 9 for Figure 8 A partial 3D schematic diagram of a single-motor drive configuration.

[0020] Figure 10 for Figure 9 A magnified view of a portion of the image.

[0021] Figure 11 for Figure 1 The second main body is opened in a three-dimensional view.

[0022] Figure 12 for Figure 11 The floating frame is a partial 3D view in the first mode.

[0023] Figure 13 for Figure 11 The floating frame is another partial 3D view in the first mode.

[0024] Figure 14 for Figure 11 The floating frame is a partial 3D view in the second mode.

[0025] Figure 15 for Figure 14 A partial exploded 3D view of the floating frame.

[0026] Figure 16 This is a schematic diagram of the operation of the feed roller assembly in the first stage of the second mode.

[0027] Figure 17 This is a schematic diagram of the operation of the feed roller assembly in the second stage of the second mode. Explanation of reference numerals in the attached figures: D1, Direction; FR, feed roller assembly; H1, First mounting hole; H2, second mounting hole; M, Media; M1, thin section; M2, Thick section; MS, mode signal; P, channel; P1, First pin; P2, second pin; PL, straight line; PL', straight line; PR, pivot arm; PV, pivot point; 1. The primary subject; 2. Floating frame; 3. Second subject; 3A. Slide groove; 4. First floating component; 5. Second floating component; 6. Sliding components; 6H, mounting hole; 10. Feeding mechanism; 11. First pulley; 12. Paper-feeding roller; 12' Auxiliary paper-feeding roller; 12C. Transmission mechanism; 12C1, First Gear; 12C2, the second gear; 12C3, the third gear; 12C4, the fourth gear; 12C5, Torque limiter; 12C6, shaft bar; 12C7, Electromagnetic clutch; 12M, motor; 13. Second pulley; 14. Paper separating rollers; 14M, second motor; 15. Paper-collecting belt; 16. First roller; 17. Second roller; 18. First upper roller; 18A, Bracket; 19. Second upper roller; 19A. Pivot frame; 20. Scanning module; 21. First scanning head; 22. Second scanning head; 30. Controller; 40. Mode Selector; 50. User interface; 60. Detector; 70. Paper feed tray; 80. Paper output tray; 100. Feed-type multi-functional scanning device. Detailed Implementation

[0028] The primary motivation behind this invention is to integrate the functions of a traditional automatic sheet-fed scanner and a flatbed scanner. The architecture is mainly based on an automatic sheet-fed scanner, and the scanning mode can be changed by pressing a mode switch button. For example, users can switch between a general document scanning mode and a book scanning mode; the former is dedicated to scanning general documents, while the latter is dedicated to scanning thicker documents such as books, pamphlets, passports, magazines, and periodicals. This integration saves costs, reduces the space occupied by the scanner, and improves office space utilization.

[0029] Figure 1 This is a perspective view of a feed-type multi-functional scanning device according to a preferred embodiment of the present invention. Figure 2 for Figure 1 A block diagram of a multi-functional scanning device. Figure 3 for Figure 1 A schematic diagram of the operation of the multi-functional scanning device in the first mode. Figure 4 for Figure 1 A schematic diagram of the operation of the multi-functional scanning device in the second mode. (See diagram for example.) Figures 1 to 4 As shown, the feed-type multi-functional scanning device 100 of this embodiment includes a feed mechanism 10, a scanning module 20, and a controller 30.

[0030] The feeding mechanism 10 includes a feeding roller assembly FR, a paper pick-up roller 12, and a paper separation roller 14. The paper pick-up roller 12 and the paper separation roller 14 work together to feed the medium M into the channel P.

[0031] The scanning module 20 is located downstream of the paper feed roller 12 and the paper separation roller 14 (relative to the direction in which the media M is fed). The feed roller assembly FR feeds the media M through the scanning module 20, enabling the scanning module 20 to capture images of the media M. In actual operation, the user places the media M on the feed tray 70, and after the media M is scanned, it is fed out to the output tray 80.

[0032] The controller 30 is electrically connected to the feed mechanism 10 and the scanning module 20, and is used to control the operation of the feed mechanism 10 and the scanning module 20. In the first mode, the paper take-up roller 12 rotates in reverse and the paper separation roller 14 rotates in reverse to perform the paper separation action, avoiding paper jams caused by multiple documents being fed in, thus allowing smooth feeding of general documents for scanning. In the second mode, the paper take-up roller 12 rotates in reverse and the paper separation roller 14 rotates in the forward direction, acting as a paper feed roller to feed thicker documents (such as books, pamphlets, passports, magazines, periodicals, and other thicker books) for scanning.

[0033] It is worth noting that when scanning books or booklets, if the paper separation roller 14 continues to rotate in the reverse direction, each page of the book or booklet will be separated by the paper separation roller 14, resulting in page damage. Therefore, when scanning books or booklets, the direction of the paper separation roller must be changed to clockwise to achieve the paper picking function.

[0034] It is understood that the effects of the present invention can be achieved with the above-described configuration features. For example, in the first mode, multi-page general documents that are not bound together can be scanned (defined as the first document), while in the second mode, a single document can be scanned (defined as the second document, the thickness of which may be equal to or greater than that of the general document, to avoid the single document being stretched in different directions). In addition, when the depth of field of the scanning module 20 is sufficient to maintain the scanning quality, a higher channel can be designed, and the above-described features can also be used to scan a single thick document. Therefore, the present invention is not limited to the following further detailed features.

[0035] Furthermore, although in this embodiment, clockwise rotation represents clockwise rotation and counterclockwise rotation represents counterclockwise rotation, this invention is not limited to this, because the reverse is also true. As long as the rotation direction is different, it can be arbitrarily regarded as clockwise or counterclockwise rotation.

[0036] Additionally, the feed-type multi-functional scanning device 100 may also include a mode selector 40 electrically connected to the controller 30 for outputting a mode signal MS to the controller 30, so that the controller 30 can control the feed mechanism 10 to enter a first mode or a second mode.

[0037] Furthermore, the feed-type multi-function scanning device 100 may also include a user interface 50, electrically connected to the controller 30, for allowing the user to select a first mode or a second mode to cause the mode selector 40 to output a mode signal MS. Embodiments of the user interface 50 include, but are not limited to, a touchscreen, a button switch, etc.

[0038] Alternatively, the feed-type multi-function scanning device 100 may also include a detector 60 electrically connected to the controller 30 for detecting the thickness of the medium M and causing the mode selector 40 to output a mode signal MS based on the thickness.

[0039] Therefore, the first mode and the second mode can be set by the user or can be switched automatically based on the detection results.

[0040] In terms of overall structure, the feed-type multi-functional scanning device 100 also includes a first main body 1, a second main body 3, and a floating frame 2. The first main body 1 is a fixed structure, typically placed on a desktop or work platform. The second main body 3 is connected to the first main body 1, for example, by a pivot connection, allowing the second main body 3 to be in an open and closed state relative to the first main body 1, for example, along... Figure 1The rotation direction allows the second body 3 to open relative to the first body 1, enabling the user to remove paper jams or perform cleaning and maintenance. The floating frame 2 is buoyantly positioned within the second body 3 to accommodate adjustments to the height of the channel P. The paper separating roller 14 is located within the floating frame 2, while the paper picking roller 12 is located within the first body 1. This allows the position of the paper separating roller 14 to float, accommodating media M of varying thicknesses. In this embodiment, a detector 60 is located within the second body 3 and can detect the position of the floating frame 2 to detect the thickness of the media M. Because the floating frame 2 is lifted by the pressure of the media M, its position corresponds to the thickness of the media M.

[0041] On the other hand, the scanning module 20 includes a first scanning head 21 and a second scanning head 22, each of which may contain the aforementioned CIS or CCD image sensor. The first scanning head 21 is disposed in the first main body 1. The second scanning head 22 is disposed in the floating frame 2. The first scanning head 21 and the second scanning head 22 scan the image of the medium M, such as performing double-sided scanning, and during double-sided scanning, both the first scanning head 21 and the second scanning head 22 are kept in close contact with the medium M. It is understood that the first scanning head 21 or the second scanning head 22 may be omitted to perform single-sided scanning without affecting the implementation of the aforementioned floating mechanism.

[0042] The feed roller assembly FR includes multiple feed rollers (also known as paper rollers) respectively disposed in the first main body 1 and the floating frame 2, and each has a driving force for actively feeding the medium M. This avoids the feeding problem caused by the rollers temporarily separating from the medium M, as described later. More specifically, the feed roller assembly FR includes: a first lower roller 16 and a second lower roller 17, with the second lower roller 17 located downstream of the first lower roller 16; and a first upper roller 18 and a second upper roller 19, which work together with the first lower roller 16 and the second lower roller 17 to feed the medium M.

[0043] Figure 5 for Figure 1 A partial top view of the multi-functional scanning device. Figure 6 for Figure 5 A partial 3D view of the corresponding transmission mechanism. For example... Figure 5 and Figure 6 As shown, in this embodiment, the feeding mechanism 10 further includes: a first pulley 11 and a second pulley 13, both disposed upstream of the paper-feeding roller 12; and a paper-feeding belt 15, wherein the first pulley 11 drives the second pulley 13 to rotate via the paper-feeding belt 15, so that the paper-feeding belt 15 assists in driving the media M to the paper-feeding roller 12, preventing the automatic paper feeding action from being affected by the user not placing the media M properly. In addition, the second pulley 13 can also drive other auxiliary paper-feeding rollers 12' to increase the range of auxiliary paper feeding.

[0044] Figure 7 for Figure 3 A schematic diagram of a dual-motor drive configuration. (See diagram below.) Figure 7 As shown, the feeding mechanism 10 includes a motor 12M and a second motor 14M. Motor 12M is located in the first body 1 and drives the paper-taking roller 12 to rotate in reverse. The second motor 14M is located in the second body 3 and drives the paper-separating roller 14 to rotate clockwise or counterclockwise. Because dual motors are used in conjunction with corresponding transmission mechanisms, the mechanism design can be simplified, as there is no need to transmit power between the second body 3 and the first body 1.

[0045] Figure 8 for Figure 3 A schematic diagram of a single-motor drive configuration. (See diagram below.) Figure 8 As shown, the feeding mechanism 10 includes a motor 12M and a transmission mechanism 12C. The motor 12M is disposed on the first body 1 and drives the paper-feeding roller 12 to rotate in reverse. The motor 12M is coupled to the paper-separating roller 14 via the transmission mechanism 12C to drive the paper-separating roller 14 to rotate clockwise or counterclockwise. An example of a practical configuration with a single motor drive will be described below, but the invention is not limited thereto. The advantages of a single-motor drive configuration are reduced motor cost, reduced noise resonance caused by an additional motor, and reduced motor heat dissipation issues.

[0046] Figure 9 for Figure 8 A partial 3D schematic diagram of a single-motor drive configuration. Figure 10 for Figure 9 A magnified view of a portion of the image. For example... Figures 8 to 10 As shown, the main configuration uses a torque limiter in conjunction with an electromagnetic clutch. Therefore, the transmission mechanism 12C includes a first gear 12C1, a second gear 12C2, a third gear 12C3, a fourth gear 12C4, a torque limiter 12C5, a shaft 12C6, and an electromagnetic clutch 12C7.

[0047] The first gear 12C1 receives power from the motor 12M. The second gear 12C2 meshes with the first gear 12C1. A torque limiter 12C5 is coaxially mounted on the shaft 12C6 with the second gear 12C2 and selectively limits or stops the torque transmitted between the second gear 12C2 and the shaft 12C6. The third gear 12C3 meshes with the first gear 12C1 and is not coaxial with the second gear 12C2. The fourth gear 12C4 is mounted on the shaft 12C6, and the third gear 12C3 meshes with the fourth gear 12C4. An electromagnetic clutch 12C7 selectively couples the fourth gear 12C4 and the shaft 12C6. The electromagnetic clutch 12C7 is energized to couple the fourth gear 12C4 and the shaft 12C6, and de-energized to decouple the fourth gear 12C4 and the shaft 12C6. Coupling represents creating a path for power transmission, while decoupling represents creating a break in the power transmission path.

[0048] In the first mode, when the electromagnetic clutch 12C7 is energized, the torque that can be transmitted is greater than the torque that the torque limiter 12C5 can transmit. The fourth gear 12C4 and the shaft 12C6 are coupled. The first gear 12C1 rotates in reverse, the second gear 12C2 and the third gear 12C3 rotate in the clockwise direction, and the fourth gear 12C4 rotates in reverse. The torque limiter 12C5 limits or stops the torque (clockwise rotation) transmitted by the second gear 12C2 to the shaft 12C6. Therefore, the second gear 12C2 cannot drive the shaft 12C6 to rotate in the clockwise direction, causing the shaft 12C6 to rotate in reverse and drive the paper separating roller 14 to rotate in reverse.

[0049] In the second mode, when the electromagnetic clutch 12C7 is not energized, the fourth gear 12C4 and the shaft 12C6 are decoupled, the first gear 12C1 rotates in reverse, the second gear 12C2 and the third gear 12C3 rotate in the clockwise direction, and the fourth gear 12C4 rotates in reverse (but does not drive the shaft 12C6 because of decoupling). The torque limiter 12C5 does not limit or stop the torque transmitted from the second gear 12C2 to the shaft 12C6, causing the shaft 12C6 to rotate in the clockwise direction and drive the paper separating roller 14 to rotate in the clockwise direction.

[0050] Figure 11 for Figure 1 The second main body 3 is opened in a three-dimensional view. Figure 12 for Figure 11 The floating frame 2 is a partial 3D view in the first mode. Figure 13 for Figure 11 The floating frame 2 is in another partial 3D view in the first mode, where the hollow arrow indicates that it is subjected to the downward pressure of the spring. Figure 14 for Figure 11 The floating frame is a partial 3D view in the second mode. Figure 15 for Figure 14 A partially exploded 3D view of the floating frame 2. (See attached image.) Figures 11 to 15 As shown, the floating frame 2 includes a first floating member 4, a second floating member 5, and a sliding member 6. The second floating member 5 is pivotally connected to the first floating member 4. The sliding member 6 is pivotally connected to the second floating member 5 and slidably connected to the second body 3 (e.g., via a groove 3A), allowing the first floating member 4 and the second floating member 5 to be relatively flattened and bent. This allows the floating frame 2 to be raised in segments, making the feeding process smoother.

[0051] Furthermore, the first pin P1 of the first floating member 4 is pivotally mounted into the first mounting hole H1 of the second floating member 5, and the second pin P2 of the first floating member 4 is pivotally mounted into the second mounting hole H2 of the second floating member 5 and the mounting hole 6H of the sliding member 6. Thus, the up-and-down movement of the sliding member 6 can be converted into a segmented pivoting movement of the first floating member 4 and the second floating member 5.

[0052] Figure 16 This is a schematic diagram of the operation of the feed roller assembly FR in the first stage of the second mode. Figure 17 This is a schematic diagram illustrating the operation of the feed roller assembly FR in the second stage of the second mode. (See diagram below.) Figures 16-17 As shown, floating frame 2 (can be Figure 14 The first floating member 4 or the second floating member 5) is lifted by the thick part M2 of the media M, and then lifts the bracket 18A of the first upper roller 18 upwards. The bracket 18A lifts the second scanning head 22. The bracket 18A is pressed downwards by the spring force, which can be relative to the second body 3 ( Figure 1 Sliding and / or rotation. When the thick part M2 has not yet reached the second upper roller 19, the second lower roller 17 contacts the thin part M1 of the medium M, and the second upper roller 19 contacts the thin part M1, so there is no problem that the second upper roller 19 cannot feed the medium M. However, considering the issues of wear and service life, in order to maintain the stability of feeding, the above rollers all have active driving capability.

[0053] In this embodiment, the second upper roller 19 is pivotally connected to the pivot frame 19A at the pivot point PV via the pivot arm PR. When the thick portion M2 reaches the second upper roller 19, the second upper roller 19 pivots relative to the pivot frame 19A via the pivot arm PR, and is lifted by the thick portion M2 and moves downstream. At this time, the center connection between the second lower roller 17 and the second upper roller 19 is... Figure 16 The straight line PL becomes Figure 17 The straight line PL' forms an angle with PL'. Specifically, the pivot frame 19A is pressed down by the spring force and can be lifted up along the direction D1. At the same time, the pivot arm PR also pivots, causing the second upper roller 19 to move upward to a position suitable for the thickness M2. At this time, the pivot frame 19A does not need to move with the floating frame 2, but only floats adaptively relative to the second main body 3.

[0054] Understandably, when all the rollers have active driving capability, it is permissible for them to temporarily detach from the medium M. In this case, the first lower roller 16, the second lower roller 17, and the first upper roller 18 can still drive the medium M, so the pivot arm PR can be omitted.

[0055] In this example, the types of books that can be scanned are limited by their thickness. Considering design constraints, based on the diameter of the paper rollers at the front and rear of the optical scanning head, for example, when the paper roller diameter is 14mm, the maximum book thickness that can be scanned is 7mm. At a thickness of 7mm, scanning everyday pamphlets, passports, magazines, etc., is generally not a problem.

[0056] However, to scan thicker books, the diameter of the paper rollers needs to be increased. For example, a paper roller diameter of 20mm can scan books up to 10mm thick. A paper roller diameter of Φ40mm can scan books up to 20mm thick. Simply put, the maximum thickness of books that can be scanned is approximately the radius of the paper rollers.

[0057] This invention proposes a compressible and deformable scanning channel structure. When scanning books, the user can switch settings on the operation panel of the scanner body. The switch mainly changes the rotation direction of the paper separation roller. For example, before switching, the paper separation roller rotates counterclockwise, while after switching, the paper separation roller will rotate clockwise.

[0058] When the paper-separating roller has become a paper-carrying roller, it can generate sufficient paper-carrying force. As the book is placed in the scanner and passes through the scanning channel, the scanning channel can float or compress according to the book's actual thickness to automatically adjust the appropriate thickness or height, providing suitable channel spacing. This allows it to replace the function of a flatbed scanner for book scanning, saving space and achieving multiple uses.

[0059] It is worth noting that all the above embodiments can be appropriately combined, replaced, or modified to provide a variety of appropriate effects.

[0060] The specific embodiments described in the detailed description of the preferred embodiments are only used to facilitate the illustration of the technical content of the present invention, and are not intended to narrowly limit the present invention to the above embodiments. All variations and implementations made without departing from the spirit of the present invention and the scope of the patent application are within the scope of the present invention.

Claims

1. A feed-type multi-functional scanning device, characterized in that, Include: The feeding mechanism includes: a paper-feeding roller and a paper-separating roller, which work together to feed the medium into the channel; and a feeding roller assembly. A scanning module is located downstream of the paper-feeding roller and the paper-separating roller, wherein the feed roller assembly feeds the media through the scanning module, enabling the scanning module to capture images of the media; as well as A controller, electrically connected to the feeding mechanism and the scanning module, is used to control the operation of the feeding mechanism and the scanning module, wherein: In the first mode, the paper-feeding roller reverses direction, and the paper-separating roller reverses direction; and In the second mode, the paper-taking roller rotates in reverse, and the paper-separating roller rotates in forward.

2. The feed-type multi-functional scanning device as described in claim 1, characterized in that, It also includes a mode selector, electrically connected to the controller, for outputting a mode signal to the controller to control the feeding mechanism to enter the first mode or the second mode.

3. The feed-type multi-functional scanning device as described in claim 2, characterized in that, It also includes a user interface electrically connected to the controller for allowing the user to select the first mode or the second mode to cause the mode selector to output the mode signal.

4. The feed-type multi-functional scanning device as described in claim 1, characterized in that, The feeding mechanism further includes: The first pulley and the second pulley are located upstream of the paper-feeding roller; and A paper-feeding belt, wherein the first pulley drives the second pulley to rotate via the paper-feeding belt, so that the paper-feeding belt assists in driving the medium to the paper-feeding roller.

5. The feed-type multi-functional scanning device as described in claim 1, characterized in that, Also includes: First subject; A second body, connected to the first body, such that the second body can be in an open and closed state relative to the first body; and A floating frame is buoyantly disposed within the second main body to accommodate adjustments to the height of the channel, wherein the paper separating roller is disposed within the floating frame, and the paper picking roller is disposed within the first main body.

6. The feed-type multi-functional scanning device as described in claim 5, characterized in that, The scanning module includes: A first scanning head is disposed in the first main body; and A second scanning head is disposed in the floating frame, and the first scanning head and the second scanning head scan the image of the media.

7. The feed-type multi-functional scanning device as described in claim 5, characterized in that, The feeding roller assembly comprises multiple feeding rollers, which are respectively disposed in the first main body and the floating frame, and all have a driving force for actively feeding the media.

8. The feed-type multi-functional scanning device as described in claim 5, characterized in that, The feeding mechanism mentioned above includes: A motor, disposed in the first main body, drives the paper-feeding roller to reverse direction; and A second motor is disposed in the second main body and drives the paper separating roller to rotate clockwise or counterclockwise.

9. The feed-type multi-functional scanning device as described in claim 5, characterized in that, The feeding mechanism mentioned above includes: A motor, disposed in the first body, drives the paper-feeding roller to reverse direction; and The transmission mechanism connects the motor to the paper-sliding roller to drive the paper-sliding roller to rotate clockwise or counterclockwise.

10. The feed-type multi-functional scanning device as described in claim 9, characterized in that, The transmission mechanism includes: The first gear receives power from the motor; The second gear meshes with the first gear; A torque limiter is coaxially disposed on the shaft with the second gear and selectively limits or stops the torque transmitted between the second gear and the shaft. The third gear meshes with the first gear; The fourth gear is mounted on the shaft, and the third gear meshes with the fourth gear; An electromagnetic clutch selectively couples the fourth gear and the shaft, wherein the electromagnetic clutch is energized to couple the fourth gear and the shaft, and de-energized to decouple the fourth gear and the shaft, wherein: When the electromagnetic clutch is energized, the fourth gear and the shaft are coupled, the first gear rotates in reverse, the second and third gears rotate in clockwise, and the fourth gear rotates in reverse. The torque limiter limits or stops the torque transmitted from the second gear to the shaft, causing the shaft to rotate in reverse and drive the paper separating roller to rotate in reverse. When the electromagnetic clutch is not energized, the fourth gear and the shaft are decoupled, the first gear rotates in reverse, the second gear and the third gear rotate in the clockwise direction, the fourth gear rotates in reverse, and the torque limiter does not limit or stop the torque transmitted by the second gear to the shaft, so that the shaft rotates in the clockwise direction and drives the paper separating roller to rotate in the clockwise direction.

11. The feed-type multi-functional scanning device as described in claim 5, characterized in that, The floating frame includes: First floating component; A second floating element, pivotally connected to the first floating element; and A slider is pivotally connected to the second floating member and slidably connected to the second body, such that the first floating member and the second floating member can be flattened and bent relative to each other.

12. The feed-type multi-functional scanning device as described in claim 11, characterized in that, The first pin of the first floating member is pivotally mounted to the first mounting hole of the second floating member, and the second pin of the first floating member is pivotally mounted to the second mounting hole of the second floating member and the mounting hole of the sliding member.

13. The feed-type multi-functional scanning device as described in claim 5, characterized in that, The feed roller assembly includes: A first lower roller and a second lower roller, wherein the second lower roller is located downstream of the first lower roller; and The first upper roller and the second upper roller work together with the first lower roller and the second lower roller to feed the medium, wherein the floating frame is lifted by the thick part of the medium and lifts the support of the first upper roller, and the support lifts the second scanning head of the scanning module.

14. The feed-type multi-functional scanning device as described in claim 13, characterized in that, When the thick portion has not yet reached the second upper roller, the second lower roller contacts the thin portion of the medium, and the second upper roller contacts the thin portion.

15. The feed-type multi-functional scanning device as described in claim 14, characterized in that, The second upper roller is pivotally connected to the pivot frame via a pivot arm. When the thick portion reaches the second upper roller, the second upper roller pivots relative to the pivot frame via the pivot arm, and is lifted by the thick portion and moves downstream.

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