Toner cartridge and laser printer

Abstract

The present application provides a toner cartridge and a laser printer for realizing the individual replacement of the toner cartridge, thereby reducing the replacement cost. The toner cartridge includes a cartridge body, a powder hopper, a first stirring rod, a first hopper door, a first hook, and a handle. The first side of the cartridge body is provided with an opening, and the second side of the cartridge body is provided with a window. The powder hopper is provided in the cartridge body, and is used to accommodate toner. The powder hopper is provided with a supply port exposed in the window at a position facing the window. The first stirring rod is provided in the powder hopper, and is used to transport the toner in the powder hopper to the supply port. The first hopper door is slidably provided on the side of the powder hopper facing the window. The first hopper door is provided with a slot, and the first hopper door can open or close the supply port when sliding. The first hook is provided on the second side of the cartridge body, and is used to engage with the slot when the first hopper door closes the supply port. The handle is slidably provided on the side of the powder hopper facing away from the window. The handle passes through the opening and is exposed to the outside of the cartridge body, and the handle is fixedly connected to the first hopper door.

Description

Technical Field

[0001] The present application relates to the technical field of printers, and in particular to a toner cartridge and a laser printer. Background Art

[0002] A laser printer is a printing output device that combines laser scanning technology with electronic photography technology. It has the advantages of fast printing speed and high image quality. The toner cartridge and toner cartridge used in laser printers are generally of one-piece or separate design. For toner cartridges with an one-piece design, users need to replace the toner cartridge together with the toner cartridge, which is costly to replace. In addition, users will touch the internal structure of the printer during the replacement process, resulting in a poor user experience. For toner cartridges with a separate design, although the toner cartridge and toner cartridge can be relatively independent, when replacing the toner cartridge, it is often necessary to remove the entire assembly of the toner cartridge and toner cartridge from the printer, then remove the depleted toner cartridge from the toner cartridge and install a new toner cartridge, and then install the entire assembly of the toner cartridge and toner cartridge into the printer. The replacement process is relatively cumbersome and the operability is poor. Summary of the Invention

[0003] The present application provides a toner cartridge and a laser printer, which are used to improve the reliability of the toner cartridge and reduce the cost of replacing the toner cartridge of the laser printer.

[0004] In a first aspect, the present application provides a toner cartridge, which may include a cartridge body, a powder hopper, a first stirring roller, a first door, a first latch, and a handle. The cartridge body may include a first side and a second side, the first side of the cartridge body may be provided with an opening, and the second side of the cartridge body may be provided with a window. The powder hopper may be disposed within the cartridge body for storing toner, and a supply port may be provided in the position of the powder hopper facing the window, which is exposed within the window. The first stirring roller may be disposed within the powder hopper for conveying toner from the powder hopper to the supply port. The first door may be slidably mounted on the side of the powder hopper facing the window, and may be provided with a latch slot, which allows the first door to open or close the supply port when it slides. The first latch may be disposed on the second side of the cartridge body, and may engage with the latch slot when the first door closes the supply port. The handle may be slidably disposed on the side of the powder hopper facing away from the window, and may be exposed outside the cartridge body through the opening. The handle may be fixedly connected to the first door.

[0005] In the above solution, the toner cartridge's toner refill port can be locked by the first door, thereby preventing toner leakage from the toner cartridge and improving the reliability of the toner cartridge. In addition, since the toner cartridge does not include components such as a photosensitive drum and a developing roller, the cost of replacing the toner cartridge is relatively low for laser printers.

[0006] In some possible implementations, the first hook may be provided on a side of the first door facing the powder bin, so that the first hook may retract to the inner side of the box body when subjected to an external force to unlock the first door, thereby opening the supply port.

[0007] In some possible embodiments, the first stirring rod includes a rotating shaft and multiple blades fixed on the rotating shaft. The multiple blades can be spirally arranged along the axial direction of the rotating shaft. When the rotating shaft rotates, the blades can drive the toner in the powder bin to produce spiral motion and transport the toner to the supply port.

[0008] Illustratively, the blade may be an arc-shaped structure, and the arc section of the blade is disposed close to the inner wall of the powder bin, so as to better match the shape of the inner wall of the powder bin, thereby achieving sufficient stirring of the toner.

[0009] In some possible implementation schemes, the angle between two adjacent blades may be between 75° and 90°.

[0010] In some possible implementations, the blade may be provided with a first scraper blade made of a flexible material. The end of the first scraper blade extends beyond the side of the blade facing away from the rotating shaft and contacts the inner wall of the powder hopper. When the rotating shaft rotates, the end of the first scraper blade may contact and rub against the inner wall of the powder hopper, thereby ensuring that the toner is fully stirred. Furthermore, because the first scraper blade is made of a flexible material, the friction between the first scraper blade and the inner wall of the powder hopper is reduced, thereby reducing the torque of the first stirring roller and reducing the load on the toner cartridge when transferring toner to the toner drum assembly.

[0011] In some possible implementations, a second scraper blade may be provided at the position of the rotating shaft corresponding to the supply port, with the end of the second scraper blade contacting the inner wall of the powder hopper. As the rotating shaft rotates, the second scraper blade can transfer toner at the supply port inside the powder hopper to the outside of the powder hopper, thereby improving toner delivery efficiency.

[0012] Exemplarily, the second scraper blade may also be made of a flexible material, so that the end of the second scraper blade may also contact and rub against the inner wall of the powder bin, thereby enabling the toner at the supply port to be fully stirred.

[0013] In a specific configuration, the number of the second scraping blades can be two, and the two second scraping blades can be centrally symmetrically arranged relative to the rotating shaft, thereby further improving the toner conveying efficiency.

[0014] In some possible embodiments, the handle may include a first slide rail, a handle body and a connecting arm, wherein the first slide rail may be arranged on the side of the powder bin facing away from the window, the handle body may be slidably assembled on the first slide rail, and the connecting arm may pass through the gap between the powder bin and the inner wall of the box body and be fixedly connected to the first bin door, so that when the user slides the handle body, the first bin door can be driven to slide synchronously to open or close the supply port.

[0015] In some possible embodiments, a second slide rail may be provided on the side of the powder bin facing the window, and the first door may be slidably mounted on the second slide rail. Along the direction from the first side of the box body to the second side thereof, the distance between the connection point of the connecting arm and the first door and the second slide rail may be no greater than 2 mm. The distance between the connection point of the connecting arm and the first door and the second slide rail is the distance between the force-bearing point of the first door and the second slide rail. The smaller this distance, the smaller the deflection torque applied to the first door, allowing the first door to slide more smoothly on the second slide rail.

[0016] In some possible embodiments, the first door may be provided with a first opening. When the first door slides to a position where the first opening is opposite to the feeding port, the first door may open the feeding port. When the first door slides to a position where the first opening is opposite to the feeding port, the first door may close the feeding port.

[0017] In a second aspect, the present application further provides a laser printer, which may include a housing, a toner cartridge assembly, and a toner cartridge according to any of the aforementioned possible embodiments. The housing has a mounting hole provided on a side thereof, the toner cartridge assembly is disposed within the housing, and the toner cartridge assembly may include a housing, a receiving slot provided on one side of the housing at a position corresponding to the mounting hole, and a powder inlet provided at the bottom of the receiving slot, which communicates with the interior of the housing. The toner cartridge can be assembled into the receiving slot through the mounting hole, with the toner cartridge's supply port positioned opposite the powder inlet, thereby enabling toner to be delivered to the toner cartridge assembly when the supply port is open.

[0018] In this solution, the toner cartridge and toner drum assembly are independently arranged, allowing the laser printer to replace the toner cartridge independently, simplifying the replacement process. The toner cartridge and toner drum assembly are arranged horizontally along the laser printer, which helps reduce the height of the laser printer compared to the existing vertical stacking method of toner cartridges and toner drum assemblies. When replacing the toner cartridge, the toner cartridge can be removed and installed in the installation hole on the side of the laser printer without opening the laser printer cover. The user will not be able to see the internal components of the printer other than the toner drum assembly during operation, thus improving the user experience.

[0019] In some possible embodiments, the toner cartridge assembly may further include a second door that is slidably disposed at the bottom of the receiving slot and can open or close the powder inlet when sliding. A rib is provided on the side of the second door facing the toner cartridge. The rib can be inserted into the slot of the first door when the toner cartridge is installed in the receiving slot. At this time, the first hook is deformed by the rib and retracts to the inside of the cartridge body, thereby contacting and locking the first door. When the first door slides driven by the handle, the second door will also slide synchronously with the first door due to the engagement between the rib and the slot. Therefore, when the first door opens the supply port, the second door can also open the powder inlet, thereby connecting the toner cartridge with the interior of the toner cartridge assembly.

[0020] In some possible embodiments, the second bin door may be provided with a second opening. When the second bin door slides to a position where the second opening is opposite to the powder inlet, the second bin door may open the powder inlet. When the second bin door slides to a position where the second opening is offset from the powder inlet, the second bin door may close the powder inlet.

[0021] In some possible embodiments, the bottom wall of the receiving groove may be provided with a second hook. The second hook may include a resilient arm, a hook body, and a raised portion. The hook body and raised portion may be located on the side of the resilient arm facing the toner cartridge. The hook body may be configured to engage with the second opening when the second compartment door closes the toner inlet. When the toner cartridge is installed in the receiving groove, the outer wall of the second side of the cartridge body may compress the raised portion, causing the resilient arm to bend toward the side away from the toner cartridge, thereby causing the hook body to bend in the same direction. This releases the second hook from locking the second compartment door, allowing the second compartment door to slide synchronously with the first compartment door.

[0022] In some possible embodiments, a limit arm may be provided at the bottom of the receiving slot, with a gap between the limit arm and the bottom of the receiving slot. When the first compartment door slides toward the direction of opening the supply port, the first compartment door can be inserted into the gap between the limit arm and the bottom of the receiving slot. The limit arm thereby limits the toner cartridge in the insertion direction between the toner cartridge and the receiving slot, preventing the toner cartridge from loosening or falling during operation of the laser printer.

[0023] In some possible implementations, the sidewalls of the receiving tank may be provided with a guide slot and a torsion spring, wherein the guide slot may extend along the depth direction of the receiving tank, one end of the torsion spring may be fixedly connected to the tank body, and the other end may have a curved portion, which may form a limiting space between the curved portion and the bottom of the guide slot. A limiting shaft that cooperates with the guide slot is provided at the end of the box body, and when the toner cartridge is installed into the receiving tank, the limiting shaft may be confined within the limiting space by the curved portion. This design, on the one hand, allows the user to more easily identify whether the toner cartridge is properly installed, and on the other hand, the curved portion can also apply a certain abutting force to the limiting shaft, so that the toner cartridge can be more stably fixed in the receiving tank.

[0024] In some possible embodiments, a first gear may be provided at one end of the rotating shaft of the first stirring roller, and the toner cartridge assembly may further include a drive motor and a gear set. The drive motor may be connected to the first gear through the gear set, thereby transmitting the driving force to the first gear through the gear set.

[0025] For example, the first gear can be positioned between the end of the toner hopper and the interior of the cartridge body. The toner cartridge assembly can also include a gear shaft, one end of which is positioned within the cartridge body and the other end of which extends into the receiving slot from the end of the receiving slot. A second gear is positioned at the end of the gear shaft positioned within the receiving slot, and the second gear automatically engages with the second gear when the toner cartridge is installed. A third gear is positioned at the end of the gear shaft positioned within the cartridge body, and the third gear is in transmission connection with the gear train, thereby enabling the drive output of the drive motor to be transmitted to the first stirring roller in sequence through the gear train and the gear shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of a partial structure of a laser printer provided in an embodiment of the present application;

[0027] Figure 2 for Figure 1 Schematic diagram of the internal structure of the laser printer shown in ;

[0028] Figure 3 A schematic diagram of the exploded structure of a toner cartridge provided in an embodiment of the present application;

[0029] Figure 4 A schematic diagram of a partial planar structure of a toner cartridge provided in an embodiment of the present application;

[0030] Figure 5 A schematic structural diagram of a first stirring rod provided in an embodiment of the present application;

[0031] Figure 6 A side view of a partial structure of a toner cartridge provided in an embodiment of the present application;

[0032] Figure 7 A schematic diagram of a partial structure of a toner cartridge provided in an embodiment of the present application;

[0033] Figure 8 This is a schematic structural diagram of a toner cartridge in an embodiment of the present application in a working state;

[0034] Figure 9 Schematic diagram of the structure of the toner cartridge in another working state according to an embodiment of the present application;

[0035] Figure 10 is a partially exploded schematic diagram of a toner cartridge assembly in an embodiment of the present application;

[0036] Figure 11 This is a schematic structural diagram of a toner cartridge assembly in an embodiment of the present application in a working state;

[0037] Figure 12 Schematic diagram of the structure of the toner cartridge assembly in another working state in an embodiment of the present application;

[0038] Figure 13 This is a schematic diagram of the first compartment door on the toner cartridge assembly side when the powder inlet is open;

[0039] Figure 14 This is a schematic diagram of the structure of the toner cartridge assembly after assembly with the toner cartridge;

[0040] Figure 15 for Figure 14 Schematic diagram of the partial cross-sectional structure of the assembly structure shown in FIG.

[0041] Figure 16 for Figure 14 Schematic diagram of the partial cross-sectional structure of the assembly structure shown in FIG.

[0042] Reference numerals:

[0043] 1-Laser printer; 100-Casing; 200-Toner cartridge assembly; 300-Toner cartridge; 211-Receiving slot; 110-Mounting hole; 120-Cover; 310-Casing; 320-Handle; 330-Powder hopper; 340-First stirring roller; 350-First hopper door; 311-Front casing; 312-Cover; 331-Supply port; 332-First end of powder hopper; 333-Second end of powder hopper; 3121-Window; 341-Rotating shaft; 342-Blade; 3411-First fixing plate; 3412-Second fixing plate; 343-First scraper; 344-Second scraper; 360-First gear; 321-First slide rail; 322-Handle body; 323-Connecting arm; 313-Opening hole; 334-Second slide rail; 3231 -groove; 352-extension portion; 314-first hook; 353-slot; 210-bin body; 220-second bin door; 212-powder inlet; 2111-first end of the accommodating groove; 213-second gear; 214-third slide rail; 221-second opening; 215-second hook; 2151-elastic arm; 2152-hook body; 2153-raised portion; 216-second foam; 222-third foam; 223-convex rib; 217-limiting arm; 315-limiting shaft; 2112-guide slide; 218-torsion spring; 2181-bend portion; 2113-limiting space; 230-second stirring rod; 240-supply rod; 250-developing rod; 260-developing scraper; 270-photosensitive drum; 280-charging roller. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings.

[0045] A laser printer is a printing output device that combines laser scanning technology with electrophotography, offering advantages such as fast printing speed and high-quality imaging. The basic operating principle of a laser printer is to receive binary data from a computer, convert it into a video signal via a video controller, and then convert the video signal into a laser drive signal via a video interface or control system. The laser scanning system then generates a laser beam carrying the character information, and the electrophotography system forms an image of the laser beam and transfers it to paper.

[0046] In a laser printer, 70% of the imaging components are concentrated in the toner cartridge, and print quality is largely determined by the toner cartridge. The toner cartridge typically consists of a photosensitive drum, a developer roller, and a toner cartridge. The toner cartridge is a consumable component that supplies toner to the laser printer. When the toner cartridge is depleted, it must be replaced promptly to maintain optimal printing performance.

[0047] Currently, the toner cartridges and drums used in laser printers generally adopt either an integrated drum-and-toner design or a separate drum-and-toner design. In printers with an integrated drum-and-toner design, the toner cartridge and drum are integrated into the same device. When replacing the toner cartridge, the user needs to replace the drum cartridge along with the toner cartridge, resulting in high replacement costs. Furthermore, the user will touch the internal structure of the printer during the replacement process, resulting in a poor user experience. In printers with a separate drum-and-toner design, when replacing the toner cartridge, the user usually needs to remove the entire toner cartridge from the printer, remove the depleted toner cartridge from the drum, install a new toner cartridge, and then reinsert the entire toner cartridge into the printer. This replacement process is cumbersome and difficult to operate.

[0048] In view of this, an embodiment of the present application provides a toner cartridge and a laser printer including the toner cartridge, so as to achieve separate replacement of the toner cartridge without removing the toner cartridge, simplify the replacement process, and reduce replacement costs.

[0049] Figure 1 A schematic diagram of the partial structure of a laser printer provided in an embodiment of the present application is shown. Figure 2 for Figure 1 The internal structure diagram of the laser printer is shown in the figure. Figure 1 and Figure 2As shown, the laser printer 1 provided in the embodiment of the present application may include a housing 100, a toner cartridge assembly 200, and a toner cartridge 300. The toner cartridge assembly 200 and the toner cartridge 300 are disposed within the housing 100 and are detachably connected. In a specific implementation, the toner cartridge assembly 200 may be provided with a receiving groove 211. A mounting hole 110 is provided on the side of the housing 100 at a position corresponding to the receiving groove 211. The user may assemble the toner cartridge 300 into the receiving groove 211 through the mounting hole 110 so that the toner cartridge 300 can transport toner into the interior of the toner cartridge assembly 200. Since the mounting hole 110 is only connected to the receiving groove 211 of the toner cartridge assembly 200, the user will not see the internal components of the laser printer 1 other than the toner cartridge assembly 200 during the installation of the toner cartridge 300, resulting in a better overall operating experience. A cover 120 may be provided on the side of the housing 100. The cover 120 may be hinged to the housing 100 via a hinge or other structure. When the user replaces the toner cartridge 300, the cover 120 may be opened to expose the mounting hole 110. After replacement, the cover 120 may be closed to conceal the mounting hole 110 and the toner cartridge 300, thereby improving the appearance of the laser printer 1. Furthermore, although not shown in the figures, the laser printer 1 may further include devices such as a laser, an acousto-optic modulator, a high-frequency driver, a scanner, a synchronizer, and an optical deflector. These devices are well-known and conventional functional components of the laser printer 1, and their specific structural configurations are not described in detail herein.

[0050] Figure 3 This is a schematic diagram of the exploded structure of the toner cartridge provided in the embodiment of the present application. Figure 3 As shown, the toner cartridge 300 provided in the embodiment of the present application may include a box body 310, a handle 320, a powder bin 330, a first stirring rod 340 and a first bin door 350. The box body 310 may include a front shell 311 having a accommodating cavity and a cover body 312, and the cover body 312 is detachably connected to the front shell 311 to close the above-mentioned accommodating cavity. The powder bin 330 is housed in the accommodating cavity of the box body 310 and can be used to accommodate toner. The first stirring rod 340 is arranged in the powder bin 330, and the first stirring roller 340 can be used to stir the toner and transport the toner to a specific position in the powder bin 330.

[0051] Figure 4 This is a partial planar structural diagram of the toner cartridge provided in the embodiment of the present application. Figure 3 and Figure 4 As shown, a supply port 331 may be provided on the side of the powder bin 330 facing the cover 312, and the supply port 331 may connect the interior of the powder bin 330 with the exterior. In a specific arrangement, the supply port 331 may be provided near one end of the powder bin 330 along its length, for example, near the first end 332 of the powder bin 330. The cross-sectional shape of the supply port 331 is not limited, for example, it may be Figure 4The rectangular shape shown in . Of course, in other embodiments, the cross-sectional shape of the supply port 331 can also be circular, elliptical or other regular or irregular shapes, which will not be elaborated here. Correspondingly, a window 3121 may be provided at a position on the cover body 312 corresponding to the supply port 331. The cross-sectional shape of the window 3121 may also be rectangular, circular, etc., and this application does not impose any restrictions on this. The cross-sectional area of ​​the window 3121 may be larger than the cross-sectional area of ​​the supply port 331 to fully expose the supply port 331. At this time, the toner in the powder bin 330 can be delivered to the toner cartridge assembly through the supply port 331 and the window 3121. It can be understood that the speed at which the toner cartridge 300 delivers toner to the toner cartridge assembly is related to the area of ​​the supply port 331. In this embodiment, the area of ​​the supply port 331 may be no less than 55mm 2 , to ensure the toner supply when the laser printer is working.

[0052] Figure 5 This is a schematic diagram of the structure of the first stirring rod provided in the embodiment of the present application. Figure 4 and Figure 5 As shown, the first stirring rod 340 may include a rotating shaft 341 and blades 342 disposed on the rotating shaft 341. In some embodiments, the rotating shaft 341 may be provided with a plurality of blades 342 at intervals. Along the axial direction of the rotating shaft 341, the plurality of blades 342 may be arranged roughly in a spiral shape, so that when the rotating shaft 341 rotates, the blades 342 can drive the toner in the powder bin 330 to produce a spiral motion, and transport the toner in the powder bin 330 from one end to the other end. It is understandable that the transport direction of the toner in the powder bin 330 can be determined by the rotation direction of the rotating shaft 341, so that Figure 4 Taking the first stirring roller 340 shown in the figure as an example, when the rotating shaft 341 rotates clockwise, the second end 333 of the powder bin 330 points to the direction of its first end 332, and the arrangement of the blades 342 tends to spiral upward, so that the toner can be transported from the second end 333 of the powder bin 330 to the first end 332, and then carried to the supply port 331 at the first end 332.

[0053] The material of blade 342 is not limited, and can be plastic, for example. Alternatively, blade 342 can have an arcuate structure. In this case, the straight section of blade 342 can be fixedly connected to shaft 341, while the arc section of blade 342 is positioned close to the inner wall of powder bin 330, thereby better matching the shape of the inner wall of powder bin 330 and achieving sufficient agitation of the toner. For example, blade 342 can have a semicircular structure.

[0054] Figure 6 This is a side view of the partial structure of the toner cartridge provided in the embodiment of the present application. Figure 5 and Figure 6As shown, in some embodiments, the rotating shaft 341 may include a first fixing plate 3411 and a second fixing plate 3412. The first fixing plate 3411 and the second fixing plate 3412 extend along the axial direction of the rotating shaft 341, respectively, and the first fixing plate 3411 and the second fixing plate 3412 may be arranged perpendicularly to each other. In this case, the cross-sectional shape of the rotating shaft 341 is approximately a cross-shaped structure. Multiple blades 342 may be arranged on the first fixing plate 3411. In a specific implementation, the straight sections of the blades 342 may be provided with notches, and the blades 342 may be fixed to the first fixing plate 3411 through the notches. In addition, of the two adjacent blades 342, one blade 342 may be arranged on one side of the second fixing plate 3412, and the other blade 342 may be arranged on the other side of the second fixing plate 3412, so that the multiple blades 342 arranged in sequence can form a spiral-like structure. In this embodiment, the angle α between two adjacent blades 342 may be between 75° and 90°. For example, the angle α between two adjacent blades 342 may be 75°, 80°, 83°, 90°, and so on.

[0055] In addition, in this embodiment of the present application, a first scraper 343 may be provided on the blade 342. The first scraper 343 may be generally rectangular in structure, with the end of the first scraper 343 extending beyond the side of the blade 342 facing away from the rotating shaft 341. In other words, the end of the first scraper 343 may be positioned beyond the arc segment of the blade 342. The first scraper 343 may be made of a flexible material, such as polyethylene glycol terephthalate (PET). When connecting the first scraper 343 to the blade 342, the first scraper 343 may be fixed to the blade 342 by gluing and hot-melting. The material of the first scraper 343 is relatively soft compared to the plastic blade 342. When the rotating shaft 341 rotates, the end of the first scraper 343 can contact and rub against the inner wall of the powder bin 330, thereby ensuring that the toner can be fully stirred, avoiding the toner conveying efficiency being too low due to the end of the blade 342 being squeezed by the inner wall of the powder bin 330 or failing to contact the inner wall. In addition, it can also reduce the torque of the first stirring roller 340, thereby reducing the load of the toner cartridge in conveying toner to the toner drum assembly.

[0056] Please continue to refer to Figure 5 and Figure 6A second scraper 344 may also be provided on the rotating shaft 341. The second scraper 344 may also have a generally rectangular structure. In a specific implementation, the second scraper 344 may be provided at a position on the rotating shaft 341 corresponding to the supply port. When the rotating shaft 341 rotates, the second scraper 344 can transfer toner at the supply port within the powder hopper 330 to the exterior of the powder hopper 330, thereby improving toner delivery efficiency. For example, the second scraper 344 may be made of PET. This allows the end of the second scraper 344 to rub against the inner wall of the powder hopper 330, thereby ensuring that the toner at the supply port is fully stirred. In addition, the number of the second scraper blades 344 can be two, and the two second scraper blades 344 can be arranged in a centrally symmetrical manner relative to the rotating shaft 341. For example, the two second scraper blades 344 can be fixed on the first fixed plate 3411 and are respectively located on both sides of the second fixed plate 3412; or, the two second scraper blades 344 can also be fixed on the second fixed plate 3412 and are respectively located on both sides of the first fixed plate 3411.

[0057] It should be understood that in some other embodiments, the blade 342 may also be an integrated spiral structure. In this case, the blade 342 may be directly arranged around the outer wall of the rotating shaft 341. This design can also realize the transportation of toner, and the details will not be elaborated here.

[0058] It should be noted that, in this embodiment, the toner cartridge 300 may further include a first gear 360. The first gear 360 may be disposed between the end of the powder bin 330 and the inner wall of the cartridge body, for example Figure 6 The following description uses the example of the first gear 360 being positioned at the first end 332 of the powder hopper 330. In this case, the first end 332 of the powder hopper 330 may be provided with a through-hole, through which the end of the rotating shaft 341 can extend to the exterior of the powder hopper 330 and be fixedly connected to the first gear 360. After the toner cartridge 300 is installed on the toner cartridge assembly, the toner cartridge assembly's drive motor can drive the first gear 360 to rotate, thereby driving the first stirring roller 340 to rotate synchronously.

[0059] Figure 7 This is a partial structural diagram of the toner cartridge provided in the embodiment of the present application. Figure 2 and Figure 7As shown, in some embodiments, the handle 320 may be disposed on the first side of the box body 310, that is, the side of the front shell 311 facing away from the cover body 312. In a specific implementation, the handle 320 may include a first slide rail 321 and a handle body 322. The first slide rail 321 may be fixedly disposed on the side of the powder hopper 330 facing away from the cover body 312 and may be arranged along the length (x-direction) of the powder hopper 330. The handle body 322 is slidably assembled on the first slide rail 321. The first side of the box body 310 may be provided with an opening 313, which may extend along the x-direction. The handle body 322 may pass through the opening 313 and be exposed to the outside of the box body 310 for easy user operation. In addition, the handle 320 can also include a connecting arm 323, one end of which is connected to the handle body 322, and the other end can pass through the gap between the powder bin 330 and the inner wall of the box body 310 and extend to the second side of the box body 310, that is, the side where the cover body 312 is located.

[0060] The first door 350 can be positioned on the second side of the box body 310. In this case, the outer wall of the powder hopper 330 can be provided with a second slide rail 334, which can also be arranged along the x-direction. The first door 350 can be slidably mounted on the second slide rail 334. It should be noted that the window 3121 defined on the second side of the box body 310 can be larger than the first door 350. In this case, the first door 350 can be slidably positioned within the window 3121 on the second side of the box body 310. The first door 350 is provided with a first opening 351, the shape of which can correspond to the shape of the replenishing port 331. Furthermore, a first foam 335 can be provided on the side of the powder hopper 330 facing the first door 350. The first foam 335 can be squeezed between the first door 350 and the outer wall of the powder hopper 330, thereby enhancing the sealing effect of the first door 350 on the replenishing port 331. It should be understood that a through hole matching the shape of the supply port 331 is provided on the first foam 335 at the position corresponding to the supply port 331 of the powder bin 330, so as to avoid obstruction of the supply port 331 when the first bin door 350 opens the supply port 331, thereby ensuring that the toner in the powder bin 330 can be smoothly transported to the toner cartridge assembly.

[0061] The first door 350 is fixedly connected to the connecting arm 323. Specifically, a groove 3231 may be provided at the end of the connecting arm 323 away from the handle body 322. The first door 350 may be provided with an extension 352, which is arranged toward the first side of the box body 310. The extension 352 can be embedded in the groove 3231, so that the inner wall of the groove 3231 can limit the extension 352 in the x-direction, thereby achieving a snap-fit ​​connection between the first door 350 and the connecting arm 323. When a user operates the handle body 322 to slide along the first slide rail 321, the first door 350, driven by the connecting arm 323, can move in the same direction along the second slide rail 334.

[0062] It should be noted that in order to improve the connection reliability between the handle body 322 and the first compartment door 350 and the movement stability of the first compartment door 350, in the embodiment of the present application, the number of the connecting arms 323 can be specifically two, and the two connecting arms 323 are arranged opposite to each other, and can respectively pass through the gap between the upper part of the powder bin 330 and the lower part of the powder bin 330 and the box body 310 to connect with the first compartment door 350. It should be noted that the directional terms such as "upper" and "lower" used in the toner cartridge 300 of the embodiment of the present application are mainly based on the position of the toner cartridge 300 at the bottom. Figure 3 The display orientation in the figure is used to illustrate the present invention and does not limit the orientation of the toner cartridge 300 in actual application scenarios.

[0063] Also, please refer to Figure 7 As shown, in this embodiment, the end of the connecting arm 323 can be positioned as close as possible to the second slide rail 334, that is, the engaging position of the connecting arm 323 and the first door 350 can be positioned as close as possible to the second slide rail 334. This can reduce the distance between the force point of the first door 350 and the second slide rail 334, thereby reducing the deflection torque applied by the connecting arm 323 to the first door 350, allowing the first door 350 to slide smoothly on the second slide rail 334, thereby improving the movement smoothness of the first door 350. By way of example, the distance between the engaging position of the connecting arm 323 and the first door 350 and the second slide rail 334 can be no greater than 2 mm.

[0064] Figure 8 Schematic diagram of the structure of the toner cartridge in a working state in an embodiment of the present application. Figure 9 This is a schematic diagram of the structure of the toner cartridge in another working state in the embodiment of the present application. Figure 7 、 Figure 8 and Figure 9As shown, the case body 310 may be provided with a first hook 314, which may be exposed in the window 3121 of the case body 310, for example, on a side of the window 3121 near the first end 332 of the powder hopper 330. The first door 350 may be provided with a slot 353. When the first door 350 slides to a side of the window 3121 near the first end 332 of the powder hopper 330, the slot 353 engages with the first hook 314 to lock the first door 350 in this position. At this time, the first opening 351 of the first door 350 is offset from the supply port of the powder hopper 330. The first door 350 can seal the supply port of the powder hopper 330, thereby preventing toner leakage from the powder hopper 330. When the first hook 314 is released from the engagement with the slot 353 due to an external force, the first door 350 can slide within the window 3121 driven by the handle 320. When the first door 350 slides to a position where the first opening 351 is aligned with the supply port, the toner in the powder hopper 330 can be sequentially delivered to the exterior of the toner cartridge 300 through the supply port, the first opening 351, and the window 3121. It will be appreciated that when the first door 350 is locked by the first hook 314, the handle 320 is also locked in a certain position. At this point, the user cannot unlock the first door 350 by sliding the handle 320, thereby preventing toner leakage due to misoperation.

[0065] It is worth mentioning that a limiting structure may be provided on the side of the first slide rail 321 away from the first end 332 of the powder hopper 330. This limiting structure can be used to block the handle body 322 when the first hopper door 350 opens the supply port, thereby preventing the handle body 322 from sliding further and causing the first hopper door 350 to block the supply port again, thereby ensuring smooth toner delivery to the toner cartridge assembly. Of course, in other embodiments, a similar limiting structure may also be provided on the side of the second slide rail 334 away from the first end 332 of the powder hopper 330 to block the first hopper door 350 when the supply port is opened. The details will not be elaborated on here.

[0066] In some embodiments, there can be two first hooks 314, which can be arranged vertically, that is, arranged side by side along the height direction of the toner cartridge 300. Accordingly, there can be two slots 353, which can be engaged with the two first hooks 314 in a one-to-one manner, thereby improving the locking reliability of the first compartment door 350.

[0067] Figure 10 Schematic diagram of a partial explosion of the toner cartridge assembly in the embodiment of the present application. Figure 11 Schematic diagram of the structure of the toner cartridge assembly in a working state in an embodiment of the present application. Figure 12 This is a structural diagram of the toner cartridge assembly in another working state in the embodiment of the present application. Figures 10 to 12As shown, the toner cartridge assembly 200 includes a chamber body 210 and a second chamber door 220. The aforementioned receiving groove 211 for receiving the toner cartridge is disposed on one side of the chamber body 210. A powder inlet 212 is disposed at the bottom of the receiving groove 211. The powder inlet 212 can connect the interior of the chamber body 210 with the receiving groove 211, that is, connect with the exterior of the chamber body 210. After the toner cartridge is installed in the receiving groove 211, the powder inlet 212 can be positioned opposite the supply port of the powder hopper. In addition, a second gear 213 can be disposed at the first end 2111 of the receiving groove 211. The second gear 213 can be in transmission connection with the drive motor of the toner cartridge assembly 200. After the toner cartridge is installed in place, the second gear 213 can automatically engage with the first gear of the toner cartridge, thereby transmitting the driving force of the drive motor to the first gear, thereby driving the first stirring rod of the toner cartridge to rotate.

[0068] A third rail 214 is provided at the bottom of the receiving tank 211. The third rail 214 extends in the x-direction, and the second door 220 is slidably mounted on the third rail 214. The second door 220 is provided with a second opening 221. The shape of the second opening 221 can correspond to the shape of the powder inlet 212. When the second door 220 is located on the side of the third rail 214 near the first end 2111 of the receiving tank 211, the second opening 221 and the powder inlet 212 are offset, and the second door 220 can close the powder inlet 212. When the second door 220 slides away from the first end 2111 of the receiving tank 211 until the second opening 221 is aligned with the powder inlet 212, the powder inlet 212 is opened, and the toner in the toner cartridge can enter the interior of the tank body 210 through the second opening 221 and the powder inlet 212.

[0069] In addition, a second hook 215 may be provided at the bottom of the receiving groove 211. For example, the second hook 215 may be provided near the first end 2111 of the receiving groove 211. The second hook 215 may include an elastic arm 2151, a hook body 2152, and a protrusion 2153 provided on a side of the elastic arm 2151 facing away from the interior of the chamber 210. The hook body 2152 is located at an end of the elastic arm 2151 away from the first end 2111 of the receiving groove 211, and the protrusion 2153 is located on a side of the hook body 2152 close to the first end 2111 of the receiving groove 211. When the second door 220 is positioned on the third rail 214 near the first end 2111 of the receiving groove 211, the hook body 2152 engages with the second opening 221 of the second door 220, and the protrusion 2153 is positioned outside the second opening 221. At this point, the second hook 215 locks the second door 220 in this position, preventing toner leakage from within the housing 210. When an external force acts on the protrusion 2153 toward the interior of the housing 210, the elastic arm 2151 bends toward the interior of the housing 210, thereby moving the hook body 2152 toward the interior of the housing 210. This releases the lock on the second door 220, allowing it to slide along the third rail 214.

[0070] In some embodiments, a second foam pad 216 may be provided at the bottom of the accommodating tank 211. The second foam pad 216 may be squeezed between the second door 220 and the bottom of the accommodating tank 211, thereby improving the sealing effect of the second door 220 on the powder inlet 212. Furthermore, a third foam pad 222 may be provided on the side of the second door 220 facing away from the interior of the cartridge body 210. After the toner cartridge is installed in the accommodating tank 211, the third foam pad 222 may be squeezed between the second door 220 and the first door, thereby reducing the risk of toner leakage between the toner cartridge and the toner cartridge assembly 200. Similarly, a through hole matching the shape of the powder inlet 212 is provided in the second foam pad 216 at the position corresponding to the powder inlet 212, and a through hole matching the shape of the second opening 221 of the second door 220 is provided in the third foam pad 222 at the position corresponding to the second opening 221 of the second door 220, thereby preventing the powder inlet 212 from being blocked when the second door 220 opens.

[0071] Please refer to Figure 8 、 Figure 9 、 Figure 11 and Figure 12As shown, a rib 223 is provided on the side of the second door 220 facing away from the interior of the housing 210. The dimensions of the rib 223 are approximately equal to those of the slot 353. When the toner cartridge 300 is installed in the receiving slot 211, the rib 223 inserts into the slot 353 of the first door 350. The first hook 314, squeezed by the rib 223, deforms and retracts into the interior of the housing 310, releasing the lock on the first door 350. Simultaneously, the outer wall of the housing 310 abuts against the protrusion 2153 of the second hook 215, exerting an external force toward the interior of the housing 210, causing the second hook 215 to release the lock on the second door 220. At this point, due to the interaction between the rib 223 and the slot 353, the first door 350 and the second door 220 are locked together in the x-direction. After the toner cartridge 300 is installed in place, when the user operates the handle to drive the first compartment door 350 to slide, the second compartment door 220 will also slide synchronously. In this way, when the first compartment door 350 slides to open the supply port, the second compartment door 220 also slides synchronously to open the powder inlet 212, thereby connecting the passage between the toner cartridge 300 and the interior of the toner drum assembly 200, so that the toner in the toner cartridge 300 can be smoothly transported to the interior of the toner drum assembly 200.

[0072] Figure 13 This is a schematic diagram of the first compartment door on the toner cartridge assembly side when the powder inlet is open. Figure 12 and Figure 13 As shown, in the embodiment of the present application, a limiting arm 217 may be provided at the bottom of the accommodating groove 211. The limiting arm 217 is located on a side of the third slide rail 214 away from the first end 2111 of the accommodating groove 211, and a certain gap may be provided between the limiting arm 217 and the bottom of the accommodating groove 211. After the toner cartridge 300 is installed in the accommodating groove 211, the user operates the handle to cause the first compartment door 350 and the second compartment door 220 to slide synchronously. When the supply port and the powder inlet 212 are opened, the first compartment door 350 may slide into the gap between the limiting arm 217 and the bottom of the accommodating groove 211. At this time, the side of the first compartment door 350 facing the powder bin 300 may abut against the limiting arm 217, thereby limiting the toner cartridge 300 in the insertion direction of the accommodating groove 211, preventing the toner cartridge 300 from loosening or falling during operation of the laser printer, thereby ensuring the reliability of the laser printer.

[0073] Figure 14 This is a structural diagram of the toner cartridge assembly and the toner cartridge after assembly. Figure 15 for Figure 14 The schematic diagram of the partial cross-section structure of the assembly structure at AA is shown in FIG. Figures 13 to 15As shown, in this embodiment, a limiting shaft 315 may be provided at the end of the cartridge body 310 along the length of the toner cartridge 300, and a guide slot 2112 may be provided on the sidewall of the accommodating groove 211. When the toner cartridge 300 is installed in the accommodating groove 211, the limiting shaft 315 may be correspondingly assembled in the guide slot 2112, thereby limiting the insertion process of the toner cartridge 300 through the cooperation between the limiting shaft 315 and the guide slot 2112. In addition, a torsion spring 218 may be provided in the accommodating groove 211. One end of the torsion spring 218 is fixedly connected to the cartridge body 210, and the other end has a curved portion 2181. The curved portion 2181 may be located above the guide slot 2112 and may be bent toward a side away from the guide slot 211. In this case, a limiting space 2113 may be formed between the curved portion 2181 and the bottom of the guide slot 2112. When the limiting shaft 315 slides along the guide groove 2112 toward the bottom of the accommodating groove 211, the curved portion 2181 elastically deforms under the abutment of the limiting shaft 315 when passing through the curved portion 2181, allowing the limiting shaft 315 to pass under the curved portion 2181 and enter the rear limiting space 2113. The curved portion 2181 then elastically returns to its initial position, confining the limiting shaft 315 within the limiting space 2113. This design allows the user to more easily identify whether the toner cartridge 300 is properly installed. Furthermore, the curved portion 2181 can apply a certain abutting force to the limiting shaft 315, allowing the toner cartridge 300 to be more stably fixed within the accommodating groove 211.

[0074] Figure 16 for Figure 14 The schematic diagram of the partial cross-section structure of the assembly structure shown in FIG. Figure 16 As shown, the toner cartridge assembly 200 may further include a second stirring roller 230, a supply roller 240, a developing roller 250, a developing scraper 260, a photosensitive drum 270, and a charging roller 280, all disposed within the cartridge body 210. The second stirring roller 230, the supply roller 240, the developing roller 250, and the photosensitive drum 270 are sequentially arranged in a direction away from the powder inlet 212, with the peripheral surface of the supply roller 240 in contact with the peripheral surface of the developing roller 250, and the peripheral surface of the developing roller 250 in contact with the peripheral surface of the photosensitive drum 270. The developing scraper 260 is disposed on one side of the developing roller 250, for example, above the developing roller 250, and is disposed in contact with the peripheral surface of the developing roller 250. Thus, when the developing roller 250 rotates, the developing scraper 260 can generate friction with the peripheral surface of the developing roller 250. The charging roller 280 is disposed on one side of the photosensitive drum 270 , for example, above the photosensitive drum 270 , and the peripheral surface of the charging roller 280 contacts the peripheral surface of the photosensitive drum 270 .

[0075] When the supply port 331 and the powder inlet 212 are opened, the toner in the toner cartridge 300 is transported into the hopper body 210 by the action of the first stirring rod 340. The toner is then transported to the left side of the hopper body 210 by the action of the second stirring rod 230 located at the powder inlet 212. The supply rod 240 located to the left of the second stirring rod 230 is then coated with toner on its circumferential surface as it rotates. The structure of the second stirring rod 230 can be similar to that of the first stirring rod 340, and will not be further described here.

[0076] The surface material of the developing roller 250 is charged rubber. As the supply roller 240 rotates in opposite directions with the developing roller 250, the toner is squeezed and coated onto the surface of the developing roller 250. In this case, the toner exhibits no polarity. When the developing roller 250, carrying the toner, rotates and intersects with the developing scraper 260, the tip of the developing scraper 260 discharges electricity, imparting a negative charge to the toner. Under the influence of the developing scraper 260 and the magnetic field, the toner forms a relatively thin and evenly distributed toner mist on the surface of the developing roller 250.

[0077] The photosensitive drum 270 is a photosensitive device that conducts when exposed to light. The photoconductive coating on the surface of the drum 270 is uniformly charged by the charging roller 280 before scanning and exposure. When the laser within the laser printer scans the laser beam onto the drum 270 in a dot matrix, the scanned points become conductive due to exposure, and the charge is rapidly released from the conductive substrate to the ground. Unscanned points retain their original charge, forming a potential difference latent image, also known as an electrostatic latent image, on the surface of the drum 270. When the photosensitive drum, carrying the electrostatic latent image, rotates into contact with the developer roller 250 carrying toner, it attracts the oppositely charged toner from the developer roller 250 onto the surface of the drum 270, forming a toner image.

[0078] When the photosensitive drum 270 carrying the toner image continues to rotate and reaches the graphic transfer device, the printing paper is also sent between the photosensitive drum 270 and the graphic transfer device. At this time, the image transfer device releases a strong voltage on the back of the printing paper, attracting the toner image on the photosensitive drum 270 to the printing paper, and then the printing paper carrying the toner image is sent to the high-temperature fixing device for heating, pressurization and hot melting. The toner melts and soaks into the printing paper, and finally the printed text or image is output.

[0079] It should be noted that the toner cartridge assembly 200 may also include a gear set and a drive motor. Specifically, the gear set may include a plurality of gears corresponding to the photosensitive drum 270, the developing roller 250, the supply roller 240, and the second stirring roller 230. These gears are meshed in sequence, and the drive motor may be connected to the gears on the photosensitive drum 270. In this way, the driving force output by the drive motor can be transmitted to the photosensitive drum 270, the developing roller 250, the supply roller 240, and the second stirring roller 230 in sequence, thereby driving the entire operation of the toner cartridge assembly 200. In addition, a gear shaft may be provided on the right side of the second stirring roller 230. One end of the gear shaft is located inside the housing 210 and meshes with the gear on the second stirring roller 230 via a third gear. The other end of the gear shaft can extend into the accommodating groove from the end of the accommodating groove, and the aforementioned second gear is provided on this end of the gear shaft. In this way, the driving force transmitted to the second stirring roller 230 by the drive motor can continue to be transmitted to the right side of the gear shaft, and ultimately transmitted to the first gear of the toner cartridge 300.

[0080] As can be seen from the above description, the toner cartridge 300 and the toner drum assembly 200 in the embodiment of the present application are independently arranged and interlocked, allowing the laser printer to replace the toner cartridge 300 independently. The replacement process is relatively simple, and because the toner cartridge 300 does not contain components such as the photosensitive drum 270 and the developer roller 250, the replacement cost is also relatively low. In addition, the toner cartridge 300 and the toner drum assembly 200 are arranged along the horizontal direction (e.g., length or width) of the laser printer. Compared with the vertical stacking method of the toner cartridge 300 and the toner drum assembly 200 in the prior art, this helps to reduce the height of the laser printer. When replacing the toner cartridge 300, it is only necessary to remove and install the toner cartridge 300 in the mounting hole on the side of the laser printer without opening the laser printer cover. The user will not see the internal components of the printer other than the toner drum assembly 200 during operation, thus helping to improve the user experience.

[0081] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A toner cartridge, characterized in that: It includes a box body, a powder bin, a first stirring stick, a first bin door, a first hook and a handle, wherein: The box body comprises a first side and a second side opposite to each other, the first side of the box body is provided with an opening, and the second side of the box body is provided with a window; The powder bin is disposed in the box body, the powder bin is used to accommodate toner, and a supply port exposed in the window is provided in the powder bin facing the window; The first stirring rod is disposed in the powder bin and is used to transport the toner in the powder bin to the supply port; The first door is slidably disposed on a side of the powder bin facing the window, and a slot is provided on the first door. The first door can open or close the supply port when sliding. The first hook is provided on the second side of the box body, and is used to engage with the card slot when the first door closes the supply port; The handle is slidably arranged on a side of the powder bin facing away from the window, the handle passes through the opening and is exposed to the outside of the box body, and the handle is fixedly connected to the first bin door.

2. The toner cartridge according to claim 1, wherein The first hook is arranged on a side of the first bin door facing the powder bin.

3. The toner cartridge according to claim 1, wherein The first stirring rod includes a rotating shaft and a plurality of blades fixed on the rotating shaft, and the plurality of blades are spirally arranged along the axial direction of the rotating shaft.

4. The toner cartridge according to claim 3, wherein: The angle between two adjacent blades is 75° to 90°.

5. The toner cartridge according to claim 3, wherein: A first scraper is provided on the blade. The first scraper is made of a flexible material. An end of the first scraper extends beyond a side of the blade away from the rotating shaft and contacts an inner wall of the powder bin.

6. The toner cartridge according to claim 3, wherein: A second scraper is provided at a position of the rotating shaft corresponding to the feeding port, and an end portion of the second scraper can contact the inner wall of the powder bin.

7. The toner cartridge according to claim 6, wherein: There are two second scrapers, and the two second scrapers are centrally symmetrically arranged relative to the rotating shaft.

8. The toner cartridge according to any one of claims 1 to 7, wherein: The handle includes a first slide rail, a handle body and a connecting arm. The first slide rail is arranged on the side of the powder bin facing away from the window. The handle body is slidably assembled on the first slide rail. The connecting arm passes through the gap between the powder bin and the inner wall of the box body and is fixedly connected to the first bin door.

9. The toner cartridge according to claim 8, wherein A second slide rail is provided on the side of the powder bin facing the window, and the first bin door is slidably assembled on the second slide rail; Along the direction from the first side of the box body to the second side, the distance between the connection position of the connecting arm and the first compartment door and the second slide rail is no more than 2 mm.

10. The toner cartridge according to any one of claims 1 to 7, wherein: The first door is provided with a first opening. When the first door slides until the first opening is opposite to the feeding port, the first door opens the feeding port; when the first door slides until the first opening is opposite to the feeding port, the first door closes the feeding port.

11. A laser printer, characterized in that: The toner cartridge comprises a housing, a toner cartridge assembly, and the toner cartridge according to any one of claims 1 to 10, wherein: The side of the shell is provided with a mounting hole; The toner cartridge assembly is disposed in the housing, and includes a bin body, a receiving groove is provided on one side of the bin body at a position corresponding to the mounting hole, a powder inlet is provided at the bottom of the receiving groove, and the powder inlet is communicated with the interior of the bin body; The toner cartridge can be assembled into the accommodating groove through the mounting hole, and the supply port of the toner cartridge is opposite to the powder inlet.

12. The laser printer according to claim 11, wherein The toner cartridge assembly further includes a second door, which is slidably disposed at the bottom of the accommodating tank and can open or close the powder inlet when sliding. A convex rib is provided on a side of the second door facing the toner cartridge, and the convex rib is used to be plugged into the card slot of the first door when the toner cartridge is installed in the accommodating slot, and to squeeze the first hook to the outside of the card slot.

13. The laser printer according to claim 12, wherein: The second bin door is provided with a second opening. When the second bin door slides to a position where the second opening is opposite to the powder inlet, the second bin door opens the powder inlet; when the second bin door slides to a position where the second opening is offset from the powder inlet, the second bin door closes the powder inlet.

14. The laser printer according to claim 13, wherein A second hook is provided at the bottom of the accommodating groove, the second hook comprising an elastic arm, a hook body and a protruding portion provided on a side of the elastic arm facing the toner cartridge, the hook body being configured to engage with the second opening when the second bin door closes the toner inlet; The second side outer wall of the box body can press the protrusion when the toner cartridge is installed in the accommodating groove, so that the elastic arm bends toward the side away from the toner cartridge, thereby releasing the engagement between the hook body and the second opening.

15. The laser printer according to any one of claims 11 to 14, wherein: A limiting arm is provided at the bottom of the accommodating groove, and a gap is formed between the limiting arm and the bottom of the accommodating groove; When the first door slides in a direction to open the supply port, the first door can be inserted into a gap between the limiting arm and the bottom of the accommodating groove.

16. The laser printer according to any one of claims 11 to 14, wherein: The side wall of the accommodating groove is provided with a guide groove and a torsion spring, wherein the guide groove extends along the depth direction of the accommodating groove, one end of the torsion spring is fixedly connected to the bin body, and the other end has a bent portion, and a limiting space is formed between the bent portion and the bottom of the guide groove; The end of the box body is provided with a limiting shaft that cooperates with the guide sliding groove. When the toner cartridge is installed in the accommodating groove, the limiting shaft is limited in the limiting space by the curved portion.

17. The laser printer according to any one of claims 11 to 14, wherein: The first stirring rod includes a rotating shaft, and a first gear is provided at one end of the rotating shaft; The toner cartridge assembly further includes a driving motor and a gear set, and the driving motor is transmission-connected to the first gear via the gear set.

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