Toner cartridge capable of fixing protective cover

Abstract

The utility model relates to the technical field of selenium drums, in particular to a selenium drum capable of fixing a protection cover, which comprises a selenium drum body, a waste powder cleaning mechanism is arranged on the surface of the selenium drum body and the inner wall of a powder outlet, and a fixing protection mechanism is arranged on the surfaces of a first cover body, the protection cover and a second cover body. And a quick replacement mechanism is arranged on the surfaces of the second cover body and the mounting seat. According to the toner cartridge, a user can conveniently align the developing roller to the mounting position of an external laser printer for mounting when the toner cartridge is used, meanwhile, the protective cover can cover the developing roller manually by the user, so that the toner cartridge is convenient and practical, the user can conveniently pour out waste powder in the waste powder bin of the toner cartridge body when the toner cartridge is used, and meanwhile, the use efficiency is improved. According to the toner cartridge, the phenomenon that waste powder leaks during use can be avoided, the developing roller is replaced according to the abrasion condition of the developing roller when the toner cartridge is used, and the phenomenon that the printing quality is affected due to aging of the developing roller in the use process of the toner cartridge is avoided.

Description

Technical Field

[0001] This utility model relates to the field of toner cartridge technology, specifically to a toner cartridge that can fix a protective cover. Background Technology

[0002] Printer toner cartridges, also known as photosensitive drums, not only determine the quality of prints but also the cost to the user. In laser printers, print quality is largely determined by the toner cartridge. However, existing toner cartridges still have some shortcomings. To meet user needs, a toner cartridge with a secure protective cover is required.

[0003] Existing toner cartridges cannot handle waste toner promptly or completely, and the waste toner cleaning process is relatively complicated, failing to meet user needs. Furthermore, existing toner cartridges lack a secure protective cover, making it inconvenient for users to align the developing roller with the external laser printer's mounting position, thus reducing practicality. Cleaning waste toner from existing cartridges is also inconvenient, making it difficult for users to empty the waste toner from the cartridge's waste toner compartment and prone to leakage. In addition, replacing the developing roller is cumbersome, hindering timely cartridge replacement and potentially leading to print quality issues due to developing roller aging. Utility Model Content

[0004] The purpose of this invention is to provide a toner cartridge that can fix the protective cover, thereby solving the problems mentioned in the background art, such as the inability to fix the protective cover when using the toner cartridge, the inconvenience of cleaning waste powder, and the cumbersome steps when replacing the developing roller, which prevent the toner cartridge from being replaced in a timely manner.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a toner cartridge capable of fixing a protective cover, comprising a toner cartridge body, a first cover mounted on the surface of the toner cartridge body, a second cover disposed on the surface of the toner cartridge body away from the first cover, protective covers disposed on the surfaces of the first cover and the second cover, the protective covers respectively rotatingly engaging with the surfaces of the first cover and the second cover, a support frame mounted on the surface of the first cover, a mounting base mounted on the surface of the second cover, a developing roller disposed on the surfaces of the support frame and the mounting base, a toner outlet opened on the surface of the toner cartridge body, a waste toner cleaning mechanism disposed on the surface of the toner cartridge body and the inner wall of the toner outlet, a fixing and protection mechanism disposed on the surfaces of the first cover, the protective cover and the second cover, and a quick replacement mechanism disposed on the surfaces of the second cover and the mounting base.

[0006] Preferably, the surface of the second cover is threaded with fastening screws, one end of which passes through the second cover and is threadedly fastened to the surface of the drum body. The two ends of the developing roller pass through the support frame and the mounting base respectively and are rotatably engaged with the surfaces of the support frame and the mounting base. The support frame, the developing roller and the mounting base are detachably connected. The surface of the drum body is equipped with a handle.

[0007] Preferably, the waste powder cleaning mechanism consists of a sealing plug, a fastening bolt, a sealing gasket, and a washer. The surface of the toner cartridge body is provided with a sealing plug for sealing the powder outlet. One end of the sealing plug extends into the interior of the powder outlet. The surface of the sealing plug is covered with a sealing gasket, and the sealing gasket is made of rubber.

[0008] Preferably, the surface of the sealing gasket is covered with a gasket for sealing and preventing powder leakage between the sealing plug and the powder outlet. The surface of the gasket is in contact with the inner wall of the powder outlet. The gasket is made of silicone. The surface of the sealing plug is threaded with a fastening bolt. One end of the fastening bolt passes through the sealing plug and is fastened to the surface thread of the toner cartridge body.

[0009] Preferably, the fixing protection mechanism consists of elastic clips, fixing posts, mounting screws, and mounting blocks. Fixing posts are installed on one side of both the first cover and the second cover. One end of the fixing post penetrates the protective cover and rotates with the inner wall of the protective cover. Elastic clips are installed on the surface of the fixing post, and the elastic clips engage with the inner wall of the protective cover.

[0010] Preferably, each of the protective covers has a mounting block installed on its surface, and a mounting screw is threaded onto the surface of each mounting block. One end of each mounting screw passes through the mounting block and is fastened to the surface threads of the first cover and the second cover, respectively.

[0011] Preferably, the quick-change mechanism consists of a positioning block, a guide slider, a nail body, and a guide groove. The surface of the second cover is provided with a guide groove, and a guide slider is provided inside the guide groove. The guide slider and the surface of the guide groove slide against each other. The surface of the guide slider is fixed to the surface at the bottom of the mounting base.

[0012] Preferably, a positioning block is installed on the surface of the guide slider, the positioning block is engaged with the inner wall of the second cover, and a nail is threadedly connected to the surface of the guide slider, one end of the nail penetrating the guide slider and being threadedly fastened to the inner wall of the second cover.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the toner cartridge with a fixed protective cover not only makes it easy for users to align the developing roller with the installation position of the external laser printer when using the toner cartridge, but also allows the user to manually close the developing roller, which is convenient and practical. It also makes it easy for users to empty the waste toner inside the waste toner compartment of the toner cartridge body when using the toner cartridge, and at the same time, it can prevent the leakage of waste toner during use. Furthermore, it allows the developing roller to be replaced according to the wear condition of the developing roller when using the toner cartridge, avoiding the phenomenon that the printing quality is affected by the aging of the developing roller during the use of the toner cartridge.

[0014] 1. With a fixed protection mechanism, the user can loosen the mounting screws on the mounting block surface and then rotate the protective cover on the surfaces of the first and second covers, causing the protective cover to rotate on the surface of the fixed post. At this time, the elastic clip is squeezed and contracts, moving away from the inner wall of the protective cover, thus moving the protective cover away from the surface of the developing roller. When it is necessary to install the toner cartridge body inside the laser printer, the user rotates the protective cover, causing it to move to one side of the developing roller. At this time, the elastic clip automatically locks into the inner wall of the protective cover. The user then tightens the mounting screws on the mounting block surface. Under the action of the protective cover, the surface of the second cover can be protected, realizing the function of fixing the toner cartridge to the protective cover. This makes it easy for the user to align the developing roller with the installation position of the external laser printer when using the toner cartridge. At the same time, the protective cover can also be manually closed by the user, which is convenient and practical.

[0015] 2. With a waste toner cleaning mechanism, the user loosens the fastening bolts on the sealing plug surface and then pulls the sealing plug on the toner outlet surface, causing the sealing plug to move away from the drum body. At this time, the sealing plug drives the sealing gasket and washer to move, causing the washer to move away from the inner wall of the toner outlet, thereby pulling the sealing plug out from the inside of the toner outlet. The user can then gently shake the drum body to allow all the waste toner inside the waste toner compartment to be discharged through the toner outlet. After cleaning, the user inserts the sealing plug back into the toner outlet. With the combined action of the sealing gasket and washer, leakage of waste toner from the waste toner compartment is prevented. The user then tightens the fastening bolts on the sealing plug surface, which installs the sealing plug on the surface of the drum body. This enables the drum to easily clean waste toner, making it convenient for the user to empty the waste toner from the drum body's waste toner compartment during use, while preventing leakage of waste toner during use.

[0016] 3. Equipped with a quick-change mechanism, the user loosens the pins on the mounting base surface and then pulls the mounting base, causing it to move away from the developing roller. At this time, the mounting base drives the guide slider to slide inside the guide groove. Under the combined action of the guide slider and the guide groove, the mounting base is guided. The guide slider drives the positioning block away from the inner wall of the second cover. The user then pulls the developing roller to remove it from the surface of the support frame for replacement. This achieves the function of quick developing roller replacement for the toner cartridge, allowing the developing roller to be replaced according to its wear condition during use, thus avoiding the phenomenon of print quality being affected by developing roller aging during toner cartridge use. 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 Enlarged structural diagram of the waste powder cleaning mechanism;

[0021] Figure 5 For the present utility model Figure 2 Enlarged structural diagram of the fixed protection mechanism;

[0022] Figure 6 This is an enlarged structural schematic diagram of the quick-change mechanism of this utility model.

[0023] In the diagram: 1. Toner cartridge body; 101. First cover; 102. Protective cover; 103. Handle; 104. Support frame; 105. Developing roller; 106. Second cover; 107. Fastening screw; 108. Toner outlet; 109. Mounting base; 2. Waste toner cleaning mechanism; 21. Sealing plug; 22. Fastening bolt; 23. Sealing gasket; 24. Washer; 3. Fixing and protection mechanism; 31. Elastic clip; 32. Fixing post; 33. Mounting screw; 34. Mounting block; 4. Quick change mechanism; 41. Positioning block; 42. Guide slider; 43. Nail body; 44. Guide groove. 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 can fix a protective cover, such as... Figure 1 and Figure 2 As shown, the device includes a toner cartridge body 1. A first cover 101 is mounted on the surface of the toner cartridge body 1. A second cover 106 is disposed on the surface of the toner cartridge body 1 away from the first cover 101. Fastening screws 107 are threaded onto the surface of the second cover 106, with one end of each screw penetrating the second cover 106 and being threadedly fastened to the surface of the toner cartridge body 1. Protective covers 102 are disposed on the surfaces of the first cover 101 and the second cover 106, and the protective covers 102 are rotatably engaged with the surfaces of the first cover 101 and the second cover 106, respectively. A support frame 104 is mounted on the surface of the first cover 101, and a mounting base 109 is mounted on the surface of the second cover 106. A developing roller 105 is provided on the surface of the support frame 104 and the mounting base 109. The two ends of the developing roller 105 pass through the support frame 104 and the mounting base 109 respectively and rotate with the surfaces of the support frame 104 and the mounting base 109. The support frame 104, the developing roller 105 and the mounting base 109 are detachably connected. A handle 103 is mounted on the surface of the drum body 1, and a powder outlet 108 is opened on the surface of the drum body 1.

[0026] Furthermore, such as Figure 2 and Figure 4As shown, a waste toner cleaning mechanism 2 is provided on the surface of the toner cartridge body 1 and the inner wall of the toner outlet 108. The waste toner cleaning mechanism 2 consists of a sealing plug 21, a fastening bolt 22, a sealing gasket 23, and a washer 24. The surface of the toner cartridge body 1 is provided with a sealing plug 21 for sealing the toner outlet 108. One end of the sealing plug 21 extends into the interior of the toner outlet 108. The surface of the sealing plug 21 is covered with a sealing gasket 23, which is made of rubber. The surface of the sealing gasket 23 is covered with a washer 24 for sealing and preventing toner leakage between the sealing plug 21 and the toner outlet 108. The surface of the washer 24 is in contact with the inner wall of the toner outlet 108 and is made of silicone. The surface of the sealing plug 21 is threadedly connected with a fastening bolt 22. One end of the fastening bolt 22 passes through the sealing plug 21 and is threadedly fastened to the surface of the toner cartridge body 1.

[0027] During implementation, the user loosens the fastening bolt 22 on the surface of the sealing plug 21, and then pulls the sealing plug 21 on the surface of the toner outlet 108, causing the sealing plug 21 to move away from the drum body 1. At this time, the sealing plug 21 drives the sealing gasket 23 and the washer 24 to move, causing the washer 24 to move away from the inner wall of the toner outlet 108, thereby pulling the sealing plug 21 out from the inside of the toner outlet 108. The user gently shakes the drum body 1 to allow all the waste toner inside the waste toner compartment to be discharged through the toner outlet 108. After cleaning, the user inserts the sealing plug 21 back into the toner outlet 108. With the combined action of the sealing gasket 23 and the washer 24, leakage of waste toner inside the waste toner compartment is prevented. The user then tightens the fastening bolt 22 on the surface of the sealing plug 21, and the sealing plug 21 is installed on the surface of the drum body 1 under the action of the fastening bolt 22, so as to realize the function of convenient cleaning of waste toner from the drum.

[0028] Furthermore, such as Figure 2 and Figure 5 As shown, the surfaces of the first cover 101, the protective cover 102, and the second cover 106 are provided with a fixing protection mechanism 3. The fixing protection mechanism 3 is composed of an elastic clip 31, a fixing post 32, a mounting screw 33, and a mounting block 34. A fixing post 32 is installed on one side of the surface of the first cover 101 and the second cover 106. One end of the fixing post 32 passes through the protective cover 102 and rotates with the inner wall of the protective cover 102. An elastic clip 31 is installed on the surface of the fixing post 32. The elastic clip 31 is engaged with the inner wall of the protective cover 102. A mounting block 34 is installed on the surface of the protective cover 102. A mounting screw 33 is threadedly connected to the surface of the mounting block 34. One end of the mounting screw 33 passes through the mounting block 34 and is threadedly fastened to the surface of the first cover 101 and the second cover 106 respectively.

[0029] In practice, the user loosens the mounting screws 33 on the surface of the mounting block 34, and then rotates the protective cover 102 on the surface of the first cover 101 and the second cover 106, causing the protective cover 102 to rotate on the surface of the fixing post 32. At this time, the elastic clip 31 is squeezed and contracts, moving away from the inner wall of the protective cover 102, so that the protective cover 102 is away from the surface of the developing roller 105. When it is necessary to install the drum body 1 inside the laser printer, the user rotates the protective cover 102, causing the protective cover 102 to move to one side of the developing roller 105. At this time, the elastic clip 31 automatically snaps into the inner wall of the protective cover 102. The user then tightens the mounting screws 33 on the surface of the mounting block 34. Under the action of the mounting screws 33, the protective cover 102 is fixed on the surface of the first cover 101 and the second cover 106. Under the action of the protective cover 102, the surface of the second cover 106 can be protected, so as to realize the function of fixing the drum to the protective cover 102.

[0030] Furthermore, such as Figure 2 and Figure 6 As shown, the surfaces of the second cover 106 and the mounting base 109 are provided with a quick-change mechanism 4. The quick-change mechanism 4 consists of a positioning block 41, a guide slider 42, a nail body 43, and a guide groove 44. The surface of the second cover 106 is provided with a guide groove 44, and a guide slider 42 is provided inside the guide groove 44. The surfaces of the guide slider 42 and the guide groove 44 slide against each other. The surface of the guide slider 42 is fixed to the surface at the bottom of the mounting base 109. The surface of the guide slider 42 is equipped with a positioning block 41, which engages with the inner wall of the second cover 106. The surface of the guide slider 42 is threadedly connected to a nail body 43, one end of which passes through the guide slider 42 and is threadedly fastened to the inner wall of the second cover 106.

[0031] In practice, after prolonged use, the surface of the developing roller 105 will wear down, affecting print quality. Therefore, the developing roller 105 needs to be replaced. To replace it, the user loosens the nail 43 on the surface of the mounting base 109 and then pulls the mounting base 109, causing it to move away from the developing roller 105. At this time, the mounting base 109 drives the guide slider 42 to slide inside the guide groove 44. Under the combined action of the guide slider 42 and the guide groove 44, the mounting base 109 is guided. The guide slider 42 drives the positioning block 41 away from the inner wall of the second cover 106. The user then pulls the developing roller 105 to remove it from the surface of the support frame 104, thus replacing the developing roller 105 and enabling quick replacement of the developing roller 105 from the toner cartridge.

[0032] Working principle: When using, first place the toner cartridge body 1 in the designated position. During packaging and transportation, the protective cover 102 protects the surface of the developing roller 105 at the front end of the toner cartridge body 1, preventing toner from scattering and falling off, and also preventing damage to the developing roller 105 from external pressure. Before installing the toner cartridge body 1, the user needs to open the protective cover 102. The user loosens the mounting screws 33 on the surface of the mounting block 34, and then rotates the protective cover 102 on the surfaces of the first cover 101 and the second cover 106, causing the protective cover 102 to rotate on the surface of the fixing post 32. At this time, the elastic clip 31 is compressed and contracts, moving away from the inner wall of the protective cover 102, thus moving the protective cover 102 away from the surface of the developing roller 105. When needed... When the toner cartridge body 1 is installed inside the laser printer, the user rotates the protective cover 102, causing the protective cover 102 to move to one side of the developing roller 105. At this time, the elastic clip 31 automatically snaps into the inner wall of the protective cover 102. The user then tightens the mounting screws 33 on the surface of the mounting block 34. Under the action of the mounting screws 33, the protective cover 102 is fixed to the surface of the first cover 101 and the second cover 106. The protective cover 102 can protect the surface of the second cover 106, thereby realizing the function of fixing the toner cartridge to the protective cover 102. This makes it easy for the user to align the developing roller 105 with the installation position of the external laser printer when using the toner cartridge. At the same time, the protective cover 102 can also be manually closed by the user, which is convenient and practical.

[0033] Subsequently, before adding toner to the inside of the drum unit 1, the waste toner inside the waste toner compartment needs to be cleaned. The user loosens the fastening bolt 22 on the surface of the sealing plug 21, and then pulls the sealing plug 21 on the surface of the toner outlet 108, causing the sealing plug 21 to move away from the drum unit 1. At this time, the sealing plug 21 drives the sealing gasket 23 and the washer 24 to move, causing the washer 24 to move away from the inner wall of the toner outlet 108, thereby pulling the sealing plug 21 out from the inside of the toner outlet 108. The user then gently shakes the drum unit 1 to allow all the waste toner inside the waste toner compartment to pass through the toner outlet 108. After cleaning the waste toner cartridge, the user inserts the sealing plug 21 into the toner outlet 108. With the combined action of the sealing gasket 23 and the washer 24, the waste toner inside the cartridge is prevented from leaking out. The user then tightens the fastening bolt 22 on the surface of the sealing plug 21. Under the action of the fastening bolt 22, the sealing plug 21 is installed on the surface of the toner cartridge body 1, so as to realize the function of easy cleaning of waste toner from the toner cartridge. This makes it convenient for the user to pour out the waste toner inside the waste toner cartridge body 1 when using the toner cartridge, and at the same time, it can prevent the waste toner from leaking out during use.

[0034] Subsequently, after prolonged use, the surface of the developing roller 105 will wear down, affecting print quality. At this point, the developing roller 105 needs to be replaced. To replace it, the user loosens the nail 43 on the surface of the mounting base 109 and then pulls the mounting base 109, causing it to move away from the developing roller 105. This causes the mounting base 109 to slide the guide slider 42 inside the guide groove 44. Under the combined action of the guide slider 42 and the guide groove 44, the mounting base 109 is guided. The guide slider 42 moves the positioning block 41 away from the inner wall of the second cover 106. The user then pulls the developing roller 105 to remove it from the surface of the support frame 104, thus replacing the developing roller 105. This allows for quick replacement of the developing roller 105 during toner cartridge use, ensuring that the developing roller 105 is replaced according to its wear condition, preventing print quality issues caused by aging of the developing roller 105 during toner cartridge use, and ultimately completing the toner cartridge usage process.

[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 capable of securing a protective cover, comprising a toner cartridge body (1), characterized in that: A first cover (101) is mounted on the surface of the toner cartridge body (1). A second cover (106) is provided on the surface of the toner cartridge body (1) away from the first cover (101). Protective covers (102) are provided on the surfaces of the first cover (101) and the second cover (106). The protective covers (102) are rotatably engaged with the surfaces of the first cover (101) and the second cover (106), respectively. A support frame (104) is mounted on the surface of the first cover (101), and a mounting bracket (104) is mounted on the surface of the second cover (106). The mounting base (109) has a developing roller (105) on its surface, the support frame (104) and the mounting base (109) have a powder outlet (108) on their surface, the surface of the drum body (1) and the inner wall of the powder outlet (108) have a waste powder cleaning mechanism (2), the surface of the first cover (101), the protective cover (102) and the second cover (106) have a fixing protection mechanism (3), and the surface of the second cover (106) and the mounting base (109) have a quick replacement mechanism (4).

2. A toner cartridge capable of fixing a protective cover according to claim 1, characterized in that: The surface of the second cover (106) is threaded with fastening screws (107). One end of the fastening screw (107) passes through the second cover (106) and is threadedly fastened to the surface of the drum body (1). The two ends of the developing roller (105) pass through the support frame (104) and the mounting base (109) respectively and rotate with the surfaces of the support frame (104) and the mounting base (109). The support frame (104), the developing roller (105) and the mounting base (109) are detachably connected. The surface of the drum body (1) is equipped with a handle (103).

3. A toner cartridge capable of fixing a protective cover according to claim 1, characterized in that: The waste powder cleaning mechanism (2) consists of a sealing plug (21), a fastening bolt (22), a sealing gasket (23), and a washer (24). The surface of the toner cartridge body (1) is provided with a sealing plug (21) for sealing the powder outlet (108). One end of the sealing plug (21) extends into the interior of the powder outlet (108). The surface of the sealing plug (21) is covered with a sealing gasket (23), which is made of rubber.

4. A toner cartridge capable of fixing a protective cover according to claim 3, characterized in that: The surface of the sealing gasket (23) is covered with a gasket (24) for sealing and preventing powder leakage between the sealing plug (21) and the powder outlet (108). The surface of the gasket (24) is in contact with the inner wall of the powder outlet (108). The gasket (24) is made of silicone. The surface of the sealing plug (21) is threaded with a fastening bolt (22). One end of the fastening bolt (22) passes through the sealing plug (21) and is threadedly fastened to the surface of the toner cartridge body (1).

5. A toner cartridge capable of fixing a protective cover according to claim 1, characterized in that: The fixed protection mechanism (3) is composed of an elastic clip (31), a fixing post (32), a mounting screw (33), and a mounting block (34). The first cover (101) and the second cover (106) are both equipped with a fixing post (32) on one side. One end of the fixing post (32) penetrates the protective cover (102) and rotates with the inner wall of the protective cover (102). The surface of the fixing post (32) is equipped with an elastic clip (31), and the elastic clip (31) is engaged with the inner wall of the protective cover (102).

6. A toner cartridge capable of fixing a protective cover according to claim 1, characterized in that: Mounting blocks (34) are installed on the surface of each protective cover (102). Mounting screws (33) are threadedly connected to the surface of each mounting block (34). One end of each mounting screw (33) passes through the mounting block (34) and is threadedly fastened to the surface of the first cover (101) and the second cover (106) respectively.

7. A toner cartridge capable of fixing a protective cover according to claim 1, characterized in that: The quick-change mechanism (4) consists of a positioning block (41), a guide slider (42), a nail body (43), and a guide groove (44). The surface of the second cover (106) is provided with a guide groove (44), and a guide slider (42) is provided inside the guide groove (44). The guide slider (42) and the surface of the guide groove (44) slide against each other. The surface of the guide slider (42) is fixed to the surface at the bottom of the mounting base (109).

8. A toner cartridge capable of fixing a protective cover according to claim 7, characterized in that: The guide slider (42) is equipped with a positioning block (41), which engages with the inner wall of the second cover (106). The guide slider (42) is threaded with a nail (43), one end of which passes through the guide slider (42) and is threadedly fastened to the inner wall of the second cover (106).

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