A toner cartridge for preventing toner leakage

Abstract

This utility model relates to the field of toner cartridge technology, specifically a toner cartridge designed to prevent toner leakage. It includes a toner cartridge body, a toner compartment on the surface of the toner cartridge body, a convenient disassembly and assembly mechanism on the surface of the fixing cover and the toner compartment, a leak-proof mechanism on the surface of the sealing cover and the inner wall of the toner filling port, and a uniform toner dispensing mechanism on the surface of the stirring frame and the inner wall of the toner compartment. This utility model not only makes the toner cartridge more convenient for users to operate, but also saves time in disassembling and assembling the toner cartridge body and the toner compartment. It prevents toner leakage from the toner compartment, resulting in a higher overall seal and preventing toner blockage within the toner compartment. It ensures more uniform toner distribution into the toner cartridge body and facilitates user disassembly and replacement of the stirring frame.

Description

Technical Field

[0001] This utility model relates to the field of toner cartridge technology, specifically to a toner cartridge that prevents toner leakage. Background Technology

[0002] As a key component of a printer, the toner cartridge plays a crucial role in capturing image information through the photosensitive layer, charging the photosensitive layer through the charge roller, transferring toner, and maintaining the cleanliness and normal operation of the toner cartridge through the cleaning roller and the switching roller. The normal working condition of the toner cartridge is essential to print quality and printer performance. However, existing toner cartridges have some shortcomings in use. In order to meet the needs of implementation, a toner cartridge that prevents toner leakage is required.

[0003] Existing toner cartridges are prone to moisture absorption due to changes in ambient humidity. Moist toner can lead to decreased print quality and printer damage. Furthermore, the disassembly and assembly of existing cartridges are inconvenient, making them difficult for users and increasing the time required for these tasks. They also lack adequate toner leakage prevention, leading to toner leakage and compromising overall sealing. Additionally, uneven toner dispensing can cause blockages in the toner cartridge, further hindering toner distribution and making it difficult to replace the mixing rack. Utility Model Content

[0004] The purpose of this invention is to provide a toner cartridge that prevents toner leakage, thereby solving the problems mentioned in the background art, such as inconvenience in disassembling and assembling the toner cartridge body and toner compartment, insufficient performance in preventing toner leakage, and uneven toner dispensing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a toner cartridge for preventing toner leakage, comprising a toner cartridge body, a toner compartment on the surface of the toner cartridge body, a handle on the surface of the toner cartridge body, side covers on the surface of the toner cartridge body and the toner compartment via screws, a fixing cover on the surface of the toner cartridge body, a toner filling port on the surface of the toner compartment, the toner filling port communicating with the interior of the toner compartment, a sealing cover on the surface of the toner filling port, one end of the sealing cover extending into the interior of the toner filling port, a stirring rack inside the toner compartment, the stirring rack rotating in conjunction with the inner wall of the toner compartment, a convenient disassembly mechanism on the fixing cover and the surface of the toner compartment, a toner leakage prevention mechanism on the surface of the sealing cover and the inner wall of the toner filling port, and a uniform toner dispensing mechanism on the surface of the stirring rack and the inner wall of the toner compartment.

[0006] Preferably, the surface of the drum body is provided with a waste toner outlet, and the surface of the waste toner outlet is provided with a waste toner cover. One end of the waste toner cover extends into the interior of the waste toner outlet, and the fixed cover extends to one side of the toner compartment. The interior of the drum body is provided with a photosensitive drum, which rotates with the inner wall of the drum body. The interior of the drum body is provided with a charging roller, which rotates with the inner wall of the drum body. The interior of the drum body is provided with a developing roller, which rotates with the inner wall of the drum body. The inner wall of the drum body is equipped with a scraper for scraping toner, and the surface of the scraper contacts the surface of the developing roller. Both the inner walls of the drum body and the toner compartment are provided with toner outlets.

[0007] Preferably, the uniform powder dispensing mechanism consists of a support frame, a rotating frame, a gear frame, and a mounting screw. The inner wall of the toner chamber is equipped with a support frame for supporting the stirring frame. The surfaces of the stirring frame and the support frame are rotatably engaged with each other. The support frame and the stirring frame are detachably connected. The interior of the toner chamber is equipped with a gear frame, which is rotatably engaged with the inner wall of the toner chamber.

[0008] Preferably, a rotating frame is mounted on the surface of the gear frame, and a mounting screw is mounted on the surface of one end of the stirring frame. One end of the mounting screw extends into the interior of the rotating frame and is threadedly fastened to the inner wall of the rotating frame.

[0009] Preferably, the easy disassembly and assembly mechanism consists of a fixing ring, a positioning slot, a positioning block, an anti-loosening sleeve, and a fastening screw. The fixing ring is installed on the surface of the center position of the fixing cover, and the anti-loosening sleeve is installed on the surface of the fixing ring.

[0010] Preferably, the surface of the anti-loosening sleeve is threaded with a fastening screw, one end of which passes through the anti-loosening sleeve, the fixing ring and the fixing cover in sequence and is fastened to the surface thread of the toner compartment. The surface of the toner compartment is equipped with a positioning block, and the inner wall of the fixing cover is provided with a positioning groove. The positioning groove and the surface of the positioning block are engaged with each other.

[0011] Preferably, the anti-leakage mechanism consists of a rubber ring, a silicone pad, a rubber block, and a fixing groove. The surface of the sealing cover is wrapped with a rubber ring, and the surface of the rubber ring is wrapped with a silicone pad for sealing the gap between the sealing cover and the powder filling port to prevent leakage. The surface of the silicone pad is in contact with the inner wall of the powder filling port.

[0012] Preferably, the inner wall of each powder filling port is equipped with equally spaced rubber clips, and the surface of each silicone pad is provided with a fixing groove, which engages with the surface of the rubber clip.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the toner cartridge that prevents toner leakage not only makes it more convenient for users to operate, but also saves the time of disassembling and assembling the toner cartridge body and the toner compartment, so that the toner inside the toner compartment can be prevented from leaking out during use, making the overall sealing of the toner cartridge higher, and preventing the toner inside the toner compartment from clogging during use, ensuring that the toner enters the interior of the toner cartridge body more evenly, and at the same time, making it convenient for users to disassemble and replace the stirring rack.

[0014] 1. With a convenient disassembly and assembly mechanism, the user places the toner cartridge on the surface of the drum unit, causing the drum unit to move the fixing cover to one side of the toner cartridge. At this time, the positioning block automatically engages with the positioning slot. The engagement of the positioning block and the positioning slot positions the drum unit and the toner cartridge in the correct installation position. Then, the user tightens the fastening screws on the surface of the fixing ring. The fastening screws secure the drum unit and the toner cartridge in place. The anti-loosening sleeving and the fastening screws prevent the fastening screws from coming loose, making the drum unit and the toner cartridge more stable during assembly and use. This achieves the function of convenient disassembly and assembly of the drum unit and the toner cartridge, making the drum unit more convenient for the user to operate and saving time in disassembling and assembling the drum unit and the toner cartridge.

[0015] 2. With an anti-leakage mechanism, the user places the sealing cap on the surface of the toner filling port, causing one end of the sealing cap to move into the interior of the toner filling port. The sealing cap moves the rubber ring and silicone pad, causing the rubber ring to move the silicone pad until it contacts the inner wall of the toner filling port. At this time, the rubber clip on the inner wall of the toner filling port automatically engages with the fixed slot. Under the engaging action of the rubber clip and the fixed slot, the sealing cap can be stably installed on the surface of the toner filling port. The combined action of the rubber ring and the silicone pad can prevent toner from leaking out from between the sealing cap and the toner filling port, thus achieving the function of preventing toner leakage from the drum. This ensures that the toner inside the drum does not leak out during use, resulting in a higher overall sealing performance of the drum during use.

[0016] 3. A uniform toner dispensing mechanism is incorporated. The gear set drives the gear frame to rotate. When the gear frame rotates, it drives the rotating frame and stirring frame to rotate inside the toner cartridge body. At this time, the stirring frame rotates on the surface of the support frame and the inner wall of the toner compartment, allowing the toner inside the toner compartment to enter the toner cartridge body evenly through the toner outlet. The stirring frame agitates the toner inside the toner compartment, preventing toner blockage. If the user needs to replace the stirring frame, they rotate the stirring frame, causing the mounting screw to rotate. The screw engages with the threaded connection between the mounting screw and the inner wall of the rotating frame, allowing the stirring frame to be removed from the surface of the support frame. This achieves the function of uniform toner dispensing from the toner cartridge, preventing toner blockage during use and ensuring more even toner distribution inside the toner cartridge body. It also facilitates easy disassembly and replacement of the stirring frame. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0019] Figure 3 This is an enlarged side view sectional diagram of the present invention;

[0020] Figure 4 For the present utility model Figure 2 A magnified schematic diagram of the uniform powder output mechanism;

[0021] Figure 5 For the present utility model Figure 3 An enlarged structural diagram of the easy-to-assemble and disassemble mechanism;

[0022] Figure 6 For the present utility model Figure 3 Enlarged structural diagram of the anti-powder leakage mechanism.

[0023] In the diagram: 1. Drum body; 101. Handle; 102. Side cover; 103. Toner compartment; 104. Waste toner cover; 105. Charging roller; 106. Photosensitive drum; 107. Developing roller; 108. Doctor blade; 109. Toner outlet; 110. Fixing cover; 111. Stirring frame; 112. Sealing cover; 113. Toner filling port; 2. Uniform toner dispensing mechanism; 21. Support frame; 22. Rotating frame; 23. Gear frame; 24. Mounting screw; 3. Easy disassembly and assembly mechanism; 31. Fixing ring; 32. Positioning slot; 33. Positioning block; 34. Anti-loosening sleeve; 35. Fastening screw; 4. Anti-leakage mechanism; 41. Rubber ring; 42. Silicone pad; 43. Rubber block; 44. Fixing slot. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. In addition, the terms "first", "second", "third", "upper", "lower", "left", "right", etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance. At the same time, in the description of the present utility model, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0025] This utility model provides a structure for a toner cartridge that prevents toner leakage, as follows: Figure 1 and Figure 2 As shown, the device includes a toner cartridge body 1, a toner compartment 103 on its surface, a handle 101 on its surface, and side covers 102 screwed onto the surfaces of the toner cartridge body 1 and the toner compartment 103. A waste toner inlet is provided on the surface of the toner cartridge body 1, and a waste toner cover 104 is provided on the surface of the waste toner inlet, with one end of the waste toner cover 104 extending into the interior of the waste toner inlet. A fixing cover 110 is installed on the surface of the toner cartridge body 1, extending to one side of the toner compartment 103. A photosensitive drum 106 is disposed inside the toner cartridge body 1, rotating in relation to the inner wall of the toner cartridge body 1. A charging roller 105 is disposed inside the toner cartridge body 1, and the charging roller 105 rotates in relation to the inner wall of the toner cartridge body 1. The drum body 1 is rotatably fitted with a developing roller 107 inside. The developing roller 107 rotates with the inner wall of the drum body 1. A scraper 108 for scraping toner is installed on the inner wall of the drum body 1. The surface of the scraper 108 contacts the surface of the developing roller 107. Both the drum body 1 and the inner wall of the toner compartment 103 are provided with toner outlets 109. The surface of the toner compartment 103 is provided with a toner filling port 113. The toner filling port 113 is connected to the inside of the toner compartment 103. A sealing cover 112 is provided on the surface of the toner filling port 113. One end of the sealing cover 112 extends into the inside of the toner filling port 113. A stirring rack 111 is provided inside the toner compartment 103. The stirring rack 111 rotates with the inner wall of the toner compartment 103.

[0026] Furthermore, such as Figure 3 and Figure 5As shown, the surfaces of the fixed cover 110 and the toner cartridge 103 are provided with a convenient disassembly and assembly mechanism 3. The convenient disassembly and assembly mechanism 3 consists of a fixed ring 31, a positioning groove 32, a positioning block 33, an anti-loosening sleeve 34, and a fastening screw 35. A fixed ring 31 is installed on the surface of the fixed cover 110 at the center position. An anti-loosening sleeve 34 is installed on the surface of the fixed ring 31. A fastening screw 35 is threadedly connected to the surface of the anti-loosening sleeve 34. One end of the fastening screw 35 passes through the anti-loosening sleeve 34, the fixed ring 31, and the fixed cover 110 in sequence and is threadedly fastened to the surface of the toner cartridge 103. A positioning block 33 is installed on the surface of the toner cartridge 103. A positioning groove 32 is opened on the inner wall of the fixed cover 110. The surfaces of the positioning groove 32 and the positioning block 33 engage with each other.

[0027] During implementation, the positioning block 33 automatically engages with the positioning slot 32. The engagement between the positioning block 33 and the positioning slot 32 positions the toner cartridge body 1 and the toner compartment 103. Subsequently, the user tightens the fastening screw 35 on the surface of the fixing ring 31. The fastening screw 35 secures the toner cartridge body 1 and the toner compartment 103 in place. The anti-loosening sleeving 34, in cooperation with the fastening screw 35, prevents the fastening screw 35 from coming loose, making the toner cartridge body 1 and the toner compartment 103 more stable during assembly and use, thus enabling the toner cartridge body 1 and the toner compartment 103 to be easily disassembled and reassembled.

[0028] Furthermore, such as Figure 3 and Figure 6 As shown, a powder leakage prevention mechanism 4 is provided on the surface of the sealing cover 112 and the inner wall of the powder filling port 113. The powder leakage prevention mechanism 4 consists of a rubber ring 41, a silicone pad 42, a rubber block 43, and a fixing groove 44. The surface of the sealing cover 112 is covered with a rubber ring 41, and the surface of the rubber ring 41 is covered with a silicone pad 42 for sealing the gap between the sealing cover 112 and the powder filling port 113 to prevent leakage. The surface of the silicone pad 42 is in contact with the inner wall of the powder filling port 113. The inner wall of the powder filling port 113 is equipped with equally spaced rubber blocks 43. The surface of the silicone pad 42 is provided with a fixing groove 44, and the fixing groove 44 and the surface of the rubber block 43 are engaged with each other.

[0029] During implementation, the user places the sealing cap 112 on the surface of the toner filling port 113, causing one end of the sealing cap 112 to move into the interior of the toner filling port 113. The sealing cap 112 drives the rubber ring 41 and the silicone pad 42 to move, causing the rubber ring 41 to drive the silicone pad 42 to contact the inner wall of the toner filling port 113. At this time, the rubber clip 43 on the inner wall of the toner filling port 113 automatically engages with the inside of the fixing slot 44. Under the engaging action of the rubber clip 43 and the fixing slot 44, the sealing cap 112 can be stably installed on the surface of the toner filling port 113. With the combined action of the rubber ring 41 and the silicone pad 42, the toner inside the toner cartridge 103 can be prevented from leaking out between the sealing cap 112 and the toner filling port 113, thus realizing the function of preventing toner leakage from the drum.

[0030] Furthermore, such as Figure 2 and Figure 4 As shown, a uniform powder dispensing mechanism 2 is provided on the surface of the stirring frame 111 and the inner wall of the toner hopper 103. The uniform powder dispensing mechanism 2 is composed of a support frame 21, a rotating frame 22, a gear frame 23, and a mounting screw 24. The inner wall of the toner hopper 103 is equipped with a support frame 21 for supporting the stirring frame 111. The surfaces of the stirring frame 111 and the support frame 21 rotate relative to each other. The support frame 21 and the stirring frame 111 are detachably connected. The inside of the toner hopper 103 is equipped with a gear frame 23. The gear frame 23 rotates relative to the inner wall of the toner hopper 103. The rotating frame 22 is installed on the surface of the gear frame 23. A mounting screw 24 is installed on the surface of one end of the stirring frame 111. One end of the mounting screw 24 extends into the interior of the rotating frame 22 and is threadedly fastened to the inner wall of the rotating frame 22.

[0031] During implementation, the gear set drives the gear frame 23 to rotate. When the gear frame 23 rotates, it drives the rotating frame 22 and the stirring frame 111 to rotate inside the drum body 1. At this time, the stirring frame 111 rotates on the surface of the support frame 21 and the inner wall of the toner compartment 103, so that the toner inside the toner compartment 103 can be evenly fed into the drum body 1 through the toner outlet 109. Under the action of the stirring frame 111, the toner inside the toner compartment 103 can be stirred to prevent toner blockage. Subsequently, if the user needs to replace the stirring frame 111, the user rotates the stirring frame 111, causing the stirring frame 111 to drive the mounting screw 24 to rotate. With the threaded engagement between the mounting screw 24 and the inner wall of the rotating frame 22, the stirring frame 111 can be removed from the surface of the support frame 21 and replaced to achieve the function of even toner dispensing from the drum.

[0032] Working principle: In use, first place the toner cartridge body 1 in the designated position. When assembling the toner cartridge body 1 and the toner compartment 103, the user places the toner compartment 103 on the surface of the toner cartridge body 1, causing the toner cartridge body 1 to move the fixing cover 110 to one side of the toner compartment 103. At this time, the positioning block 33 automatically engages with the positioning slot 32. The engagement between the positioning block 33 and the positioning slot 32 positions the toner cartridge body 1 and the toner compartment 103. Then, the user screws... The fastening screws 35 on the surface of the fastening ring 31 secure the drum body 1 and the toner cartridge 103 together. The anti-loosening sleeve 34, in cooperation with the fastening screws 35, prevents the fastening screws 35 from coming loose, making the drum body 1 and the toner cartridge 103 more stable during assembly and use. This allows for easy disassembly and assembly of the drum body 1 and the toner cartridge 103, making the drum more convenient for users to operate and saving time in disassembling and assembling the drum body 1 and the toner cartridge 103.

[0033] The user then pulls the sealing cap 112 outward to remove it from the surface of the toner filling port 113. Toner is then added to the toner cartridge 103 through the toner filling port 113. After adding toner, the user places the sealing cap 112 back onto the surface of the toner filling port 113, causing one end of the sealing cap 112 to move into the interior of the toner filling port 113. The sealing cap 112 moves the rubber ring 41 and the silicone pad 42, causing the rubber ring 41 to move the silicone pad 42 until it contacts the inner wall of the toner filling port 113. At this point, the rubber retainer on the inner wall of the toner filling port 113 engages. 43 automatically snaps into the fixed slot 44. Under the interlocking action of the rubber block 43 and the fixed slot 44, the sealing cover 112 can be stably installed on the surface of the toner filling port 113. With the combined action of the rubber ring 41 and the silicone pad 42, the toner inside the toner compartment 103 can be prevented from leaking out between the sealing cover 112 and the toner filling port 113, so as to achieve the function of preventing toner leakage from the drum. This ensures that the toner inside the toner compartment 103 can be prevented from leaking out during use, and the overall sealing performance of the drum is higher.

[0034] Subsequently, when the gear set inside the toner cartridge body 1 (not shown in the diagram) rotates, the gear set drives the gear carrier 23 to rotate. When the gear carrier 23 rotates, it drives the rotating frame 22 and the stirring frame 111 to rotate inside the toner cartridge body 1. At this time, the stirring frame 111 rotates on the surface of the support frame 21 and the inner wall of the toner compartment 103, so that the toner inside the toner compartment 103 can be evenly fed into the toner cartridge body 1 through the toner outlet 109. Under the action of the stirring frame 111, the toner inside the toner compartment 103 can be stirred, preventing toner blockage. Subsequently, if the user needs to... When replacing the mixing rack 111, the user rotates the mixing rack 111, causing the mixing rack 111 to drive the mounting screw 24 to rotate. With the threaded engagement between the mounting screw 24 and the inner wall of the rotating rack 22, the mixing rack 111 is removed from the surface of the support frame 21 and replaced. This ensures that the toner cartridge dispenses toner evenly, thus preventing toner blockage inside the toner compartment 103 during use. It also ensures that the toner enters the toner cartridge body 1 more evenly. At the same time, it facilitates the user's disassembly and replacement of the mixing rack 111, ultimately completing the use of the toner cartridge.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A toner cartridge for preventing toner leakage, comprising a cartridge body (1), characterized in that: The surface of the toner cartridge body (1) is provided with a toner compartment (103), and a handle (101) is installed on the surface of the toner cartridge body (1). Side covers (102) are screwed onto the surfaces of the toner cartridge body (1) and the toner compartment (103). A fixing cover (110) is installed on the surface of the toner cartridge body (1). A toner filling port (113) is opened on the surface of the toner compartment (103), and the toner filling port (113) is connected to the interior of the toner compartment (103). A sealing cover (112) is provided on the surface of the toner filling port (113). One end of the cover (112) extends into the interior of the powder filling port (113). The interior of the toner hopper (103) is provided with a stirring rack (111). The stirring rack (111) and the inner wall of the toner hopper (103) rotate and cooperate with each other. The fixed cover (110) and the surface of the toner hopper (103) are provided with a convenient disassembly and assembly mechanism (3). The surface of the sealing cover (112) and the inner wall of the powder filling port (113) are provided with a powder leakage prevention mechanism (4). The surface of the stirring rack (111) and the inner wall of the toner hopper (103) are provided with a uniform powder dispensing mechanism (2).

2. A toner cartridge for preventing toner leakage according to claim 1, characterized in that: The surface of the drum body (1) is provided with a waste toner inlet, and a waste toner cover (104) is provided on the surface of the waste toner inlet. One end of the waste toner cover (104) extends into the interior of the waste toner inlet. The fixed cover (110) extends to one side of the toner compartment (103). A photosensitive drum (106) is provided inside the drum body (1). The photosensitive drum (106) rotates with the inner wall of the drum body (1). A charging roller (105) is provided inside the drum body (1). The roller (105) rotates and engages with the inner wall of the drum body (1). The drum body (1) is provided with a developing roller (107). The developing roller (107) rotates and engages with the inner wall of the drum body (1). The inner wall of the drum body (1) is equipped with a scraper (108) for scraping powder. The surface of the scraper (108) is in contact with the surface of the developing roller (107). The inner walls of the drum body (1) and the toner compartment (103) are both provided with powder outlets (109).

3. A toner cartridge for preventing toner leakage according to claim 1, characterized in that: The uniform powder dispensing mechanism (2) consists of a support frame (21), a rotating frame (22), a gear frame (23), and a mounting screw (24). The inner wall of the toner hopper (103) is equipped with a support frame (21) for supporting the stirring frame (111). The surfaces of the stirring frame (111) and the support frame (21) rotate relative to each other. The support frame (21) and the stirring frame (111) are detachably connected. The inside of the toner hopper (103) is equipped with a gear frame (23). The gear frame (23) rotates relative to the inner wall of the toner hopper (103).

4. A toner cartridge for preventing toner leakage according to claim 3, characterized in that: A rotating frame (22) is mounted on the surface of the gear frame (23), and a mounting screw (24) is mounted on the surface of one end of the stirring frame (111). One end of the mounting screw (24) extends into the interior of the rotating frame (22) and is threadedly fastened to the inner wall of the rotating frame (22).

5. A toner cartridge for preventing toner leakage according to claim 1, characterized in that: The easy disassembly and assembly mechanism (3) consists of a fixing ring (31), a positioning slot (32), a positioning block (33), an anti-loosening sleeve (34), and a fastening screw (35). The fixing ring (31) is installed on the surface of the center position of the fixing cover (110), and the anti-loosening sleeve (34) is installed on the surface of the fixing ring (31).

6. A toner cartridge for preventing toner leakage according to claim 5, characterized in that: The surface of the anti-loosening sleeve (34) is threaded with a fastening screw (35). One end of the fastening screw (35) passes through the anti-loosening sleeve (34), the fixing ring (31) and the fixing cover (110) in sequence and is fastened to the surface of the toner cartridge (103). The surface of the toner cartridge (103) is equipped with a positioning block (33). The inner wall of the fixing cover (110) is provided with a positioning groove (32). The positioning groove (32) and the surface of the positioning block (33) are engaged with each other.

7. A toner cartridge for preventing toner leakage according to claim 1, characterized in that: The anti-leakage powder mechanism (4) consists of a rubber ring (41), a silicone pad (42), a rubber clip (43), and a fixing groove (44). The surface of the sealing cover (112) is covered with a rubber ring (41), and the surface of the rubber ring (41) is covered with a silicone pad (42) for sealing the gap between the sealing cover (112) and the powder filling port (113) to prevent leakage. The surface of the silicone pad (42) is in contact with the inner wall of the powder filling port (113).

8. A toner cartridge for preventing toner leakage according to claim 7, characterized in that: The inner wall of each powder filling port (113) is equipped with equally spaced rubber clips (43), and the surface of each silicone pad (42) is provided with a fixing groove (44), which engages with the surface of the rubber clips (43).

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