Image forming apparatus

Abstract

The application discloses an image forming device, which comprises an imaging unit, a sheet bearing part, a first frame and a second frame arranged oppositely, an inner front cover, a first circuit board and a second circuit board, the first frame and the second frame are used for supporting the imaging unit, two ends of the inner front cover are connected with the first frame and the second frame respectively, the second circuit board is electrically connected with the first circuit board, and the distance from the second circuit board to the first frame is less than the distance from the second frame to the first frame; when the second circuit board and the sheet bearing part are projected to the same horizontal plane along the plumb direction, the projection of the second circuit board at least partially overlaps with the projection of the sheet bearing part. The second circuit board is installed on the front upper part of the whole image forming device, so that the signal interruption caused by shielding can be avoided, meanwhile, the second circuit board is hidden in the whole image forming device, which does not affect the appearance and does not occupy the extra internal and external space.

Description

Technical Field

[0001] This application relates to the field of communication technology for image forming apparatuses, and more specifically to an image forming apparatus. Background Technology

[0002] In recent years, image forming devices such as copiers, multifunction printers, printers, and fax machines have typically incorporated communication equipment. This equipment is used to establish communication with integrated circuit cards (IC cards) and information terminal devices such as smartphones and tablets. However, some image forming devices place the communication equipment at the rear or side of the unit. When the device is placed against a wall, signal interruption can occur. Installing the communication equipment externally affects the device's appearance and user experience. Summary of the Invention

[0003] In order to overcome the problems existing in the prior art, the main objective of this application is to provide an image forming apparatus that can prevent signal interruption by blocking without affecting the overall appearance and user experience.

[0004] To achieve the above objectives, this application specifically adopts the following technical solution: This application provides an image forming apparatus, including a main body, the main body comprising: Imaging unit, used to form an image on a sheet; A sheet support portion, used to support the sheet; A first frame and a second frame arranged opposite to each other are used to support the imaging unit; An inner front cover, the two ends of which are respectively connected to the first frame and the second frame; A first circuit board is used to control the imaging unit to perform imaging operations; and The second circuit board is electrically connected to the first circuit board, and the distance from the second circuit board to the first frame is less than the distance from the second frame to the first frame; When the second circuit board and the sheet support portion are projected onto the same horizontal plane along the plumb line, the projection of the second circuit board overlaps at least partially with the projection of the sheet support portion.

[0005] In some embodiments, the main body further includes a first support member, the two ends of which are respectively connected to the first frame and the second frame; The inner front cover, the first support member, the first frame, and the second frame form a receiving cavity; The second circuit board is located inside the receiving cavity.

[0006] In some embodiments, the main body further includes a second support member connected to at least one of the first frame, the second frame, the first support member, and the inner front cover, wherein the inner front cover, the first support member, the second support member, the first frame, and the second frame enclose the receiving cavity.

[0007] In some embodiments, the main body further includes a rear cover plate, which is connected to the first frame and the second frame, and the rear cover plate is disposed opposite to the inner front cover, wherein the distance between the second circuit board and the inner front cover is less than the distance between the second circuit board and the rear cover plate.

[0008] In some embodiments, the height of the second circuit board in the plumb line is not higher than the top height of the first frame or the top height of the second frame.

[0009] In some embodiments, in the direction in which the sheet is discharged from the body, the second circuit board is positioned downstream of the imaging unit.

[0010] In some embodiments, the second circuit board is configured as an expansion board to provide additional functionality to the first circuit board.

[0011] In some embodiments, the second circuit board is configured as a communication module for establishing communication with the user's terminal device.

[0012] In some embodiments, the first support member is made of resin.

[0013] In some embodiments, the second circuit board is detachably mounted on the first support member.

[0014] In some embodiments, the second circuit board is detachably mounted to the inner front cover.

[0015] The image forming apparatus of this application includes an imaging unit, a sheet support, a first frame and a second frame arranged opposite to each other, an inner front cover, a first circuit board, and a second circuit board. The imaging unit is used to form an image on the sheet, the sheet support is used to support the sheet, the first circuit board is used to control the imaging unit to perform imaging operations, the first frame and the second frame are used to support the imaging unit, the two ends of the inner front cover are respectively connected to the first frame and the second frame, the second circuit board is electrically connected to the first circuit board, and the distance from the second circuit board to the first frame is less than the distance from the second frame to the first frame; when the second circuit board and the sheet support are projected onto the same horizontal plane along the plumb line, the projection of the second circuit board overlaps at least partially with the projection of the sheet support. Compared with the prior art, this application avoids signal interruption by installing the second circuit board between the first frame and the second frame, and the projections of the second circuit board and the sheet support in the plumb line at least partially overlap, that is, by installing the second circuit board at the upper front part of the entire image forming apparatus. At the same time, by hiding the second circuit board inside the entire image forming apparatus, it does not affect the appearance and does not occupy extra internal or external space. Attached Figure Description

[0016] Figure 1 A perspective view of an image forming apparatus provided in an embodiment of this application.

[0017] Figure 2 A perspective view of an image forming apparatus with a horizontally arranged front cover provided in an embodiment of this application.

[0018] Figure 3 This is a partial exploded view of the image forming apparatus provided in an embodiment of this application.

[0019] Figure 4 A connection structure diagram of the first frame, second frame, first support member, and second support member provided in the embodiments of this application.

[0020] Figure 5 A cross-sectional view of an image forming apparatus provided in an embodiment of this application.

[0021] Figure 6 This is a partial structural schematic diagram of the image forming apparatus provided in an embodiment of this application.

[0022] Figure 7 This is a partial structural schematic diagram of the image forming apparatus provided in an embodiment of this application from another perspective.

[0023] Figure 8 for Figure 7 A magnified view of section A in the image.

[0024] Figure 9 This is a schematic diagram of the 5G Wi-Fi module structure provided in an embodiment of this application.

[0025] Figure 10 This is a partial structural schematic diagram of an image forming apparatus without a second circuit board provided in an embodiment of this application.

[0026] Figure 11 for Figure 10 A magnified view of a section at point B.

[0027] Figure 12 for Figure 11 A schematic diagram of the positioning column.

[0028] Figure 13 for Figure 8 A schematic diagram of the structure of the first buckle in the middle.

[0029] Figure 14 for Figure 8 A schematic diagram of the structure of the second buckle.

[0030] Figure 15 This is a partial structural diagram of an image forming apparatus equipped with a 5G Wi-Fi module, provided in an embodiment of this application.

[0031] Figure 16 This is a partial structural diagram of an image forming apparatus equipped with a 2.4G Wi-Fi module, provided in an embodiment of this application.

[0032] Figure 17 This is a schematic diagram of the structure of a 2.4G Wi-Fi module provided in an embodiment of this application.

[0033] Figure 18 This is a partial exploded view of an image forming apparatus provided in another embodiment of this application.

[0034] Figure 19 A cross-sectional view of an image forming apparatus provided in another embodiment of this application.

[0035] Attached image labels: 1. First frame; 2. Second frame; 3. First support member; 31. Support member body; 311. First through hole; 32. Buckle structure; 321. Positioning post; 321a. Positioning part; 321b. Alignment part; 322. First buckle; 322a. Limiting part; 322b. First connecting part; 322c. Notch; 322d. Limiting protrusion; 323. Second buckle; 323a. Second connecting part; 323b. 324. Engaging part; 325. Supporting component; 33. Limiting component; 4. Engaging part; 4. Second supporting component; 41. Bending part; 42. Positioning protrusion; 43. Joining part; 5. Inner front cover; 6. Front cover plate; 7. Rear cover plate; 8. Top cover plate; 9. Side cover plate; 10. Second circuit board; 10a. Positioning hole; 10b. Second through hole; 11. Screw; 100. Main body; 101. Receiving cavity; 200. Image forming apparatus. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0037] In the description of this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; unless otherwise specified or explained, the term "multiple" refers to two or more; the terms "connected," "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0038] In the description of this specification, it should be understood that the directional terms such as "upper" and "lower" used in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should also be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0039] It should be noted that, in the following description, the first direction refers to the length extension direction of the image forming apparatus ( Figure 1 The X direction in the image forming apparatus refers to the direction of its width extension. Figure 1 In the Y direction), the third direction refers to the height extension direction of the image forming apparatus ( Figure 1The Z direction is defined in the image forming apparatus, where the X, Y, and Z directions are perpendicular to each other. The X direction is the left-right direction of the image forming apparatus, the Y direction is the front-back direction of the image forming apparatus, and the Z direction is the up-down direction of the image forming apparatus.

[0040] Reference Figure 1 As shown, an embodiment of this application discloses an image forming apparatus 200, which can be a printer, copier, multifunction printer, fax machine, or all-in-one machine, etc. The image forming apparatus 200 includes a main body 100 and a consumable assembly (not shown in the figure). The main body 100 includes an imaging unit, a sheet carrier, a first circuit board, and a second circuit board. The consumable assembly can be mounted on the main body 100 and is used to provide consumables (such as toner) to the imaging unit. The sheet carrier is used to carry the sheet, and the imaging unit is used to form an image on the sheet. The first circuit board is connected to the imaging unit and is used to control the imaging unit to perform imaging operations. The second circuit board is connected to the first circuit board.

[0041] Reference Figure 2 and Figure 3 As shown, the main body 100 also includes a first frame 1, a second frame 2, a first support member 3, a second support member 4, an inner front cover 5, a front cover plate 6, a rear cover plate 7, an upper cover plate 8, and a side cover plate 9. The first frame 1 and the second frame 2 are arranged opposite to each other to support the imaging unit. The first support member 3 and the second support member 4 are arranged opposite to each other, and their two ends are respectively connected to the first frame 1 and the second frame 2 to form the inner frame of the main body 100. The two ends of the inner front cover 5 are respectively connected to one end of the first frame 1 and the second frame 2, and the two ends of the rear cover plate 7 are respectively connected to the other end of the first frame 1 and the second frame 2. The inner front cover 5 and the rear cover plate 7 are arranged opposite to each other, so that the inner front cover 5, the first support member 3, the second support member 4, the first frame 1, and the second frame 2 form a receiving cavity. The front cover plate 6 is connected to the first frame 1 and the second frame 2 and is located on the side of the inner front cover 5 facing away from the first support member 3 and the second support member 4. When the front cover plate 6 is rotated downwards to open, the front cover plate 6 can extend parallel to the bottom of the main body 100 to form a sheet material support part. The upper cover plate 8 is connected to the upper part of the first frame 1 and the second frame 2 and is used to cover the top of the main body 100. The side cover plate 9 is located on the outside of the first frame 1 and the second frame 2. The first support member 3 can be made of resin, and the first frame 1 and the second frame 2 can be sheet metal parts.

[0042] Simultaneously refer to Figure 3 and Figure 4As shown, the second support member 4 may include a bending portion 41, a positioning protrusion 42, and a connecting portion 43, while the first support member 3 may include a snap-fit ​​portion 33. During assembly, the second support member 4 can be positioned with the first frame 1 and the second frame 2 via the positioning protrusions 42 at both ends. Then, screws 11 are inserted from the outside to the inside into the frame and the bending portion 41, so that both ends of the second support member 4 are connected to the first frame 1 and the second frame 2 respectively via screws 11. Afterward, the snap-fit ​​portion 33 of the first support member 3 can be snapped into the connecting portion 43 of the second support member 4, and then the two ends of the first support member 3 are connected to the first frame 1 and the second frame 2 respectively via screws 11 to form the inner frame. Next, install the various cover plates. Specifically, align the positioning piece of the inner front cover 5 with the sheet metal parts (first frame, second frame), press the inner front cover 5 in, and engage the buckle of the inner front cover 5 with the opening on the front side of the sheet metal part. Then, first engage the side cover 9 with the opening on the bottom of the sheet metal part using its bottom buckle, then press the side cover 9 in, so that the buckle on the front side of the side cover 9 engages with the inner front cover 5, and the buckle on the rear side of the side cover 9 engages with the hole on the rear side of the sheet metal part. Next, align the positioning piece of the rear cover 7 with the positioning hole on the rear side of the side cover 9, press the rear cover 7 in, so that the buckle of the rear cover 7 engages with the opening on the rear side of the sheet metal part, and then lock the rear cover 7 onto the inner frame using screws. Then, connect the front cover 6 to the front inner cover 5 via a hinge so that the front cover 6 can be rotated open. Finally, connect the upper cover 8 to the top hinge of the inner frame so that the upper cover 8 can be rotated open.

[0043] Reference Figure 5 As shown, the second circuit board 10 is disposed within the receiving cavity 101, and the distance between the second circuit board 10 and the first support member 3 is less than the distance between the second circuit board 10 and the second support member 4. The distance between the second circuit board 10 and the first frame 1 is less than the distance between the second frame 2 and the first frame 1. That is, in the first direction, the second circuit board 10 is located between the first frame 1 and the second frame 2, such that when the second circuit board 10 and the sheet support portion are projected onto the same horizontal plane along the plumb line, the projection of the second circuit board 10 at least partially overlaps with the projection of the sheet support portion. In the third direction, the second circuit board 10 is closer to the first support member 3 than the second support member 4. In this embodiment, by installing the second circuit board 10 within the receiving cavity 101, that is, by installing the second circuit board on the upper front part of the image forming apparatus, the situation of signal interruption due to obstruction can be avoided. Furthermore, since the second circuit board 10 is hidden inside the image forming apparatus, it does not affect the appearance of the apparatus and does not occupy extra internal or external space, which is beneficial to reducing the height and weight of the apparatus.

[0044] In some embodiments, the distance between the second circuit board 10 and the inner front cover 5 is less than the distance between the second circuit board 10 and the rear cover 7, that is, in the second direction, the second circuit board 10 is closer to the inner front cover 5 relative to the rear cover 7. This embodiment, by making the distance between the second circuit board 10 and the inner front cover 5 less than the distance between the second circuit board 10 and the rear cover 7, that is, by mounting the second circuit board 10 on the upper front part of the image forming apparatus, further avoids signal interruption.

[0045] In some embodiments, the height of the second circuit board 10 in the plumb direction is not higher than the top height of the first frame 1 or the top height of the second frame 2. In the direction in which the sheet is discharged from the body, the second circuit board 10 is located downstream of the imaging unit, or in other words, the second circuit board 10 is closer to the inner front cover 5 relative to the imaging unit.

[0046] In this embodiment, the main body 100 is provided with a second support member 4, and the two ends of the second support member 4 are respectively connected to the first frame 1 and the second frame 2. It can be understood that in other embodiments, the second support member may also be connected to the first support member, or the second support member may also be connected to the inner front cover, or there may be no second support member, but only the first support member. If there is no second support member, the inner front cover, the first support member, the first frame and the second frame form a receiving cavity.

[0047] In this embodiment, the second circuit board 10 can be configured as a communication module. The communication module can be connected to the first circuit board via a connecting line, and a magnetic ring can be provided on the connecting line. The communication module can be used to establish communication with the user's terminal device. For example, the communication module can be used to establish a communication connection with IC cards, information terminals, etc., to realize information interaction between the image forming apparatus and IC cards or information terminals. The magnetic ring can be used to suppress electromagnetic interference on the communication line and improve the stability and reliability of communication. The communication module can be a Wi-Fi module (wireless local area network communication), an NFC module (short-range wireless communication), or a Bluetooth module, etc. The following description uses a 5G Wi-Fi module as an example.

[0048] Reference Figure 6As shown, the second circuit board 10 is detachably mounted on the side of the first support member 3 facing the second support member 4. Specifically, the first support member 3 includes a support member body 31 and a snap-fit ​​structure 32. The snap-fit ​​structure 32 is located on the side of the support member body 31 facing the second support member 4. The second circuit board 10 is detachably mounted on the first support member 3 through the snap-fit ​​structure 32, thereby placing the second circuit board 10 within the receiving cavity 101 formed by the inner front cover 5, the first support member 3, the second support member 4, the first frame 1, and the second frame 2. In this embodiment, by making the second circuit board 10 detachably connected to the first support member 3 through a snap-fit ​​mechanism, it facilitates disassembly and assembly by production line and after-sales personnel, has good overall stability, and can also install different models of the second circuit board 10, saving overall machine costs.

[0049] Reference Figures 7 to 9 As shown, the second circuit board 10 is provided with a positioning hole 10a, and the snap-fit ​​structure 32 includes a positioning post 321. The positioning post 321 is connected to the inner wall of the support body 31, and the positioning post 321 can pass through the positioning hole 10a. When installing the second circuit board 10, the positioning post 321 can be inserted into the positioning hole 10a of the second circuit board 10 to achieve positioning of the second circuit board 10. This embodiment, by providing mutually cooperating positioning posts 321 and positioning holes 10a, facilitates the positioning of the second circuit board 10 during installation and improves the installation efficiency of the second circuit board 10.

[0050] Reference Figures 10 to 12 As shown, the positioning post 321 includes a positioning part 321a and an alignment part 321b. One end of the positioning part 321a is connected to the support body 31, and the other end of the positioning part 321a is connected to the alignment part 321b. The cross-sectional area of ​​the alignment part 321b gradually decreases from the end near the positioning part 321a to the end away from the positioning part 321a. In this embodiment, by setting the end of the positioning post 321 to an approximately tapered structure, it is easier for the positioning post 321 to pass through the positioning hole 10a for positioning.

[0051] In some embodiments, the support body 31 and the positioning post 321 are both made of plastic, and the positioning post 321 and the support body 31 are integrally formed.

[0052] Simultaneously refer to Figure 8 , Figure 9 and Figure 11As shown, the support body 31 has a first through hole 311, the second circuit board 10 has a second through hole 10b, and the latching structure 32 includes a first latch 322 and a second latch 323. The two ends of the first latch 322 pass through the second through hole 10b and the first through hole 311 respectively, so that one end of the first latch 322 engages with the second circuit board 10, and the other end engages with the support body 31. One end of the second latch 323 is connected to the support body 31, and the other end engages with the side of the second circuit board 10. This embodiment typically includes a first latch 322 and a second latch 323 to facilitate the installation of the second circuit board 10 onto the support body 31 by engaging the first latch 322 and the second latch 323; and by fixing the second circuit board 10 with the first latch 322 and the second latch 323, the movement of the second circuit board 10 in the vertical, horizontal, and longitudinal directions can be restricted.

[0053] Reference Figure 13 As shown, the first buckle 322 includes a limiting part 322a, a first connecting part 322b, and a limiting protrusion 322d. Both ends of the first connecting part 322b are connected to the limiting part 322a and the limiting protrusion 322d, respectively, and the end of the first connecting part 322b with the limiting protrusion 322d has a notch 322c. The limiting part 322a can cooperate with the second through hole 10b for limiting, and the limiting protrusion 322d can cooperate with the first through hole 311 for limiting. In this embodiment, by providing a notch 322c at the end of the first connecting part 322b with the limiting protrusion 322d, the end of the first connecting part 322b with the notch 322c is made to elastically deform, thereby facilitating the passage of the end of the first connecting part 322b with the notch 322c through the second through hole 10b and the first through hole 311.

[0054] Reference Figure 14 As shown, the second latch 323 includes a second connecting portion 323a and an engaging portion 323b. The second connecting portion 323a is connected to the support body 31 and extends in a third direction. The engaging portion 323b is connected to the end of the second connecting portion 323a away from the support body 31 and engages with the side of the second circuit board 10. In this embodiment, by including the second connecting portion 323a and the engaging portion 323b in the second latch 323, it is easier for the second latch 323 to undergo elastic deformation to engage the second circuit board 10.

[0055] In some embodiments, the first buckle 322 and the second buckle 323 are both made of plastic, and the second buckle 323 is integrally formed with the support body 31.

[0056] Continue to refer to Figure 11As shown, the snap-fit ​​structure 32 also includes multiple support components 324 and multiple limiting components 325. The multiple support components 324 are respectively connected to the support body 31 to support the second circuit board 10. The multiple limiting components 325 are respectively connected to the support body 31 to limit the second circuit board 10 to prevent it from moving.

[0057] Reference Figure 15 As shown, when installing the 5G Wi-Fi module, first adjust the position of the 5G Wi-Fi module so that the positioning post 321 is aligned with the positioning hole 10a. Then, press the 5G Wi-Fi module towards the support body so that the positioning post 321 passes into the positioning hole 10a. At the same time, the second buckle 323 deforms, and the side of the 5G Wi-Fi module passes over the engaging part 323b and is engaged by the engaging part 323b. Then, squeeze the end of the first buckle 322 with the notch 322c so that the end of the first buckle 322 with the notch 322c undergoes elastic deformation. Then, the end of the first buckle 322 with the notch 322c passes through the second through hole 10b and the first through hole 311 in sequence. Then, release the first buckle 322, and the two ends of the first buckle 322 are engaged with the 5G Wi-Fi module and the support body, respectively. When disassembling the 5G Wi-Fi module, the first clip 322 and the second clip 323 are elastically deformed, and then the 5G Wi-Fi module can be removed directly.

[0058] Reference Figure 16 and Figure 17 As shown, in some other embodiments, the second circuit board can be a 2.4G Wi-Fi module. When installing the 2.4G Wi-Fi module, first adjust the position of the 2.4G Wi-Fi module so that the positioning post 321 is aligned with the positioning hole 10a. Then press the 2.4G Wi-Fi module towards the support body so that the positioning post 321 passes into the positioning hole 10a. Then squeeze the end of the first buckle 322 with the notch 322c so that the end of the first buckle 322 with the notch 322c undergoes elastic deformation. Then the end of the first buckle 322 with the notch 322c passes through the second through hole 10b and the first through hole 311 in sequence. Then release the first buckle 322, so that the two ends of the first buckle 322 are engaged with the 2.4G Wi-Fi module and the support body respectively. Since the 2.4G Wi-Fi module is smaller in area than the 5G Wi-Fi module, it can be stably fixed by simply limiting its position using the positioning post 321 and the first latch 322. When removing the 2.4G Wi-Fi module, the first latch 322 undergoes elastic deformation, after which the 2.4G Wi-Fi module can be directly removed.

[0059] Reference Figure 18 and Figure 19 As shown, in some embodiments, the second circuit board 10 can also be detachably mounted on the side of the inner front cover 5 facing the first support member 3 and the second support member 4, and the second circuit board 10 can also be configured as an extension board, which provides additional functions for the first circuit board. Exemplarily, the inner front cover 5 has a snap-fit ​​structure on the side facing the first support member 3 and the second support member 4, and the second circuit board 10 is detachably mounted on the inner front cover 5 via the snap-fit ​​structure. The snap-fit ​​structure on the inner front cover 5 and the snap-fit ​​structure on the first support member 3 can be the same, and their engagement methods are also the same, which will not be described in detail here.

[0060] Of course, in other embodiments, the second circuit board 10 can also be fixed to the inside of the inner front cover by screws, or a fixing groove can be provided in the inner front cover, and the second circuit board can be inserted into the corresponding fixing groove, and other parts can be used to press the opening of the fixing groove.

[0061] The mounting structure of the second circuit board of the image forming apparatus of this application is simple, easy to install, highly stable, low in cost, and highly versatile, with minimal impact on the overall appearance and size of the image forming apparatus.

[0062] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An image forming apparatus, characterized in that, Includes a subject, the subject comprising: Imaging unit, used to form an image on a sheet; A sheet support portion, used to support the sheet; A first frame and a second frame arranged opposite to each other are used to support the imaging unit; An inner front cover, the two ends of which are respectively connected to the first frame and the second frame; A first circuit board is used to control the imaging unit to perform imaging operations; and The second circuit board is electrically connected to the first circuit board, and the distance from the second circuit board to the first frame is less than the distance from the second frame to the first frame; When the second circuit board and the sheet support portion are projected onto the same horizontal plane along the plumb line, the projection of the second circuit board overlaps at least partially with the projection of the sheet support portion.

2. The image forming apparatus according to claim 1, characterized in that, The main body also includes a first support member, the two ends of which are respectively connected to the first frame and the second frame; The inner front cover, the first support member, the first frame, and the second frame form a receiving cavity; The second circuit board is located inside the receiving cavity.

3. The image forming apparatus according to claim 2, characterized in that, The main body also includes a second support member, which is connected to at least one of the first frame, the second frame, the first support member, and the inner front cover. The inner front cover, the first support member, the second support member, the first frame, and the second frame enclose the receiving cavity.

4. The image forming apparatus according to claim 1, characterized in that, The main body also includes a rear cover plate, which is connected to the first frame and the second frame, and the rear cover plate is disposed opposite to the inner front cover. The distance between the second circuit board and the inner front cover is less than the distance between the second circuit board and the rear cover plate.

5. The image forming apparatus according to claim 1, characterized in that, The height of the second circuit board in the plumb line is not higher than the top height of the first frame or the top height of the second frame.

6. The image forming apparatus according to claim 1, characterized in that, In the direction in which the sheet is discharged from the body, the second circuit board is positioned downstream of the imaging unit.

7. The image forming apparatus according to claim 1, characterized in that, The second circuit board is configured as an expansion board to provide additional functionality to the first circuit board.

8. The image forming apparatus according to claim 7, characterized in that, The second circuit board is configured as a communication module for establishing communication with the user's terminal device.

9. The image forming apparatus according to claim 2, characterized in that, The first support member is made of resin.

10. The image forming apparatus according to claim 2, 3, or 9, characterized in that, The second circuit board is detachably mounted on the first support member.

11. The image forming apparatus according to any one of claims 2 to 9, characterized in that, The second circuit board is detachably mounted on the inner front cover.

Images