Carbon powder supplementing box

Abstract

The utility model discloses a carbon powder supplementing box. The carbon powder supplementing box comprises a shell and a carbon powder container arranged in the shell, and a driving force input part used for receiving external rotation driving force is arranged on a carbon powder discharging part of the carbon powder container; wherein the carbon powder container is arranged to be capable of automatically discharging carbon powder along with rotation of the driving force input part. The carbon powder supplementing box disclosed by the utility model can realize automatic powder discharging and has the advantage of simplicity and convenience in powder adding operation.

Description

Technical Field

[0001] The present application relates to the field of electrophotographic imaging devices; specifically, it relates to a toner replenishment cartridge for replenishing toner to the developing unit of an electrophotographic imaging device. Background Art

[0002] When an electrophotographic imaging device operates, the developing unit (developing cartridge) supplies the toner stored therein to the photosensitive drum through a developing roller provided thereon, so as to develop the electrostatic latent image on the photosensitive drum. In the prior art, the developing unit is generally detachably installed in the main body of the electrophotographic imaging device, so as to facilitate replacing the developing unit or replenishing toner to the developing unit after the toner is exhausted.

[0003] In addition, the electrophotographic imaging device or the developing unit may also be configured with a toner replenishment cartridge capable of replenishing toner to the developing unit. In the prior art, since the toner in the toner replenishment cartridge is prone to agglomerate and coagulate together, it is necessary for the operator to shake or pat the toner replenishment cartridge in order to smoothly discharge the toner, resulting in inconvenient toner replenishment operation. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the main purpose of the present application is to provide a toner replenishment cartridge that can automatically promote the smooth discharge of toner.

[0005] To achieve the above main purpose, the present utility model discloses a toner replenishment cartridge, including a housing and a toner container provided in the housing. The toner container is provided with a toner discharge portion, and the toner discharge portion is provided with a driving force input portion for receiving an external rotational driving force; wherein, the toner container is arranged to automatically discharge toner as the driving force input portion rotates.

[0006] In some embodiments, the driving force input portion is rotatably sleeved on the toner discharge portion. One of the driving force input portion and the toner container has a protruding portion protruding along the axial direction of the driving force input portion, and the other of the driving force input portion and the toner container has a recessed portion recessed along the axial direction of the driving force input portion; as the driving force input portion rotates, the protruding portion can enter and exit the recessed portion, so that the toner container shakes along the axial direction of the driving force input portion and automatically discharges toner.

[0007] In some embodiments, the driving force input portion is rotatably sleeved on the toner discharge portion, and a fan is provided in the housing. The fan has fan blades provided on the driving force input portion; the toner container is provided with a one-way valve assembly, and the airflow generated when the airflow generating device operates enters the interior of the toner container through the one-way valve assembly to automatically discharge the toner.

[0008] In some embodiments, a screw for conveying toner to the toner discharge portion is provided in the housing of the toner container, and the screw is fixedly arranged relative to the housing; the toner container is rotatably arranged in the housing and can rotate along with the rotation of the driving force input portion.

[0009] In some embodiments, the driving force input portion is rotatably sleeved on the toner discharge portion, and the toner replenishing cartridge further includes:

[0010] A variable-volume member, arranged at one end of the toner container relative to the toner discharge portion;

[0011] A pressing member, configured to press the variable-volume member so that the gas in the variable-volume member enters the toner container;

[0012] Wherein, the pressing member is configured to press the variable-volume member in response to the rotation of the driving force input portion so as to automatically discharge the toner.

[0013] In some embodiments, the toner replenishing cartridge further includes: a pull rope, arranged to be wound as the driving force input portion rotates, and when the pull rope is wound, the pressing member moves towards the toner discharge portion direction, thereby pressing the variable-volume member.

[0014] Optionally, one end of the pull rope is connected to the driving force input portion and can be wound on the driving force input portion as the driving force input portion rotates.

[0015] Optionally, one end of the pull rope is connected to a rotating member, and the driving force input portion is in transmission cooperation with the rotating member so that the rotating member can rotate along with the driving force input portion to wind the pull rope on the rotating member.

[0016] In some embodiments, the toner replenishing cartridge further includes:

[0017] A push rod, configured to apply a force to the pressing member in response to the rotation of the driving force input portion, so that the pressing member moves towards the toner discharge portion direction to press the variable-volume member.

[0018] Further, a transmission mechanism is provided between the driving force input portion and the push rod, and the transmission mechanism includes:

[0019] A rack, configured to move along the axial direction of the driving force input portion;

[0020] An intermediate gear, the axis of rotation of which is perpendicular to the axis of rotation of the driving force input part; the intermediate gear includes a cylindrical gear and a first bevel gear, the cylindrical gear meshes with the rack, and the first bevel gear meshes with the second bevel gear of the driving force input part;

[0021] A lever is rotatably arranged on the toner container or the housing; one end of the lever is connected to the push rod, and the other end of the lever is connected to the rack.

[0022] In the toner replenishment cartridge of the present application, the toner container is arranged to automatically promote the smooth discharge of toner as the driving force input part rotates, which has the advantages of convenient use and simple structure.

[0023] In order to more clearly illustrate the purpose, technical solution and advantages of the present invention, the present invention will be further described in detail below with reference to the drawings and specific embodiments. Description of the Drawings

[0024] Figure 1 is the structural diagram of the toner replenishment cartridge in Embodiment 1;

[0025] Figure 2 is the axial sectional view of the toner replenishment cartridge in Embodiment 1;

[0026] Figure 3 is the exploded view of the structure of the toner replenishment cartridge in Embodiment 1;

[0027] Figure 4 is the structural diagram of the driving force input part and the toner container in the first perspective in Embodiment 1;

[0028] Figure 5 is the structural diagram of the driving force input part and the toner container in the second perspective in Embodiment 1;

[0029] Figure 6 is the structural diagram of the toner replenishment cartridge in Embodiment 2;

[0030] Figure 7 is the axial sectional view of the toner replenishment cartridge in Embodiment 2;

[0031] Figure 8 is the structural diagram of the toner replenishment cartridge in Embodiment 3;

[0032] Figure 9 is the axial sectional view of the toner replenishment cartridge in Embodiment 3;

[0033] Figure 10 is the structural diagram of the toner replenishment cartridge in Embodiment 4;

[0034] Figure 11 is the structural diagram of the pressing member and the toner container in Embodiment 4;

[0035] Figure 12 It is a structural diagram of the toner replenishment cartridge in Embodiment 4 after removing the housing;

[0036] Figure 13 It is a structural diagram of the toner replenishment cartridge in Embodiment 5 after removing the housing;

[0037] Figure 14 It is a structural diagram of the toner replenishment cartridge in Embodiment 6;

[0038] Figure 15 It is an axial sectional view of the toner replenishment cartridge in Embodiment 6;

[0039] Figure 16 It is a structural diagram of the toner replenishment cartridge in Embodiment 6 after removing the housing. Detailed implementation manners

[0040] Example 1

[0041] As Figures 1-5 shown, the toner replenishment cartridge of Embodiment 1 includes a housing 110, a toner container 120, and a driving force input portion 130. The toner container 120 is disposed within the housing 110. One end (e.g., the lower end) of the housing 110 is provided with an opening portion 111. The toner container 120 is provided with a toner discharge portion 121 at one end located at the opening portion 111. The toner discharge portion 121 is used to discharge the toner within the toner container 120. The driving force input portion 130 is rotatably sleeved on the toner discharge portion 121 for receiving an external rotational driving force.

[0042] Furthermore, one of the driving force input portion 130 and the toner container 120 has a protruding portion protruding along the axial direction of the driving force input portion 130, and the other of the driving force input portion 130 and the toner container 120 has a recessed portion recessed along the axial direction of the driving force input portion 130. Among them, the protruding portion is arranged to be able to enter and exit the recessed portion as the driving force input portion 130 rotates. When the protruding portion enters and exits the recessed portion, the toner container 120 can be jolted along the axial direction of the driving force input portion 130, thereby promoting the discharge of toner, and having the advantage of simple structure.

[0043] Specifically, as Figure 4 and 5As shown, the toner container 120 has a recessed portion 122 that is recessed along the axial direction of the driving force input portion 130. The recessed portion 122 is provided on the stepped surface 123 of the toner container 120, and the stepped surface 123 is provided at the upper end of the toner discharge portion 121; one end (upper end) of the driving force input portion 130 facing the stepped portion 123 has a protruding portion 131 that protrudes along the axial direction of the driving force input portion 130. The protruding portion 131 is arranged to be able to enter and exit the recessed portion 122 as the driving force input portion 130 rotates. Through the cooperation between the protruding portion 131 and the recessed portion 122, the toner container 120 can be jolted along the axial direction of the driving force input portion 130 to promote the discharge of toner from the toner discharge portion 121. It is easy to understand that the positions of the protruding portion 131 and the recessed portion 122 can be interchanged, which can also cause the toner container 120 to jolt.

[0044] The protruding dimension of the protruding portion 131 and the recessed dimension of the recessed portion 122 gradually change in the rotation direction R of the driving force input portion 130, for example, gradually decrease to form a structure similar to a spiral, so that the protruding portion 131 can stably exit from the recessed portion 122. The protruding portion 131 can also adopt other forms such as a cam, as long as it can make the toner container 120 jolt.

[0045] The number of the protruding portion 131 and the recessed portion 122 can both be one or more. Preferably, the number of the protruding portion 131 and the recessed portion 122 are respectively multiple (for example, four respectively), and the multiple protruding portions 131 and the multiple recessed portions 122 are evenly distributed around the rotation axis of the driving force input portion 130.

[0046] Furthermore, an elastic element 140 such as a compression spring can be provided at one end of the toner container 120 relative to the toner discharge portion 121. The elastic element 140 is used to apply elastic pressure to the toner container 120 along the axial direction of the driving force input portion 130. On the one hand, this can buffer the impact force received by the toner container 120 during jolting, and on the other hand, it can enable the reliable engagement between the protruding portion 131 and the recessed portion 122. The opposite ends of the elastic element 140 can act on the housing 110 and the toner container 120 respectively.

[0047] Among them, the housing 110 can be arranged to include an outer housing 110a and an inner housing 110b. The inner housing 110b can be slidably engaged with the toner container 120, and the elastic element 140 can be provided between the toner container 120 and the inner housing 110b. The housing 110 can also have only the outer housing 110a.

[0048] Example 2

[0049] As Figure 6 and 7As shown, the toner replenishment cartridge of Embodiment 2 includes a housing 210, a toner container 220, and a driving force input portion 230. The toner container 220 is disposed within the housing 210. One end (e.g., the lower end) of the housing 210 is provided with an opening portion 211. The toner container 220 is located at one end of the opening portion 211 and is provided with a toner discharge portion 221 for discharging the toner within the toner container 220. The driving force input portion 230 is rotatably sleeved on the toner discharge portion 221 for receiving an external rotational driving force.

[0050] A one-way valve assembly 240 that only allows air flow to enter its interior is provided on the toner container 220. The one-way valve assembly 240 is preferably disposed at one end of the toner container 220 relative to the toner discharge portion 221. The toner replenishment cartridge is further provided with an air flow generating device. The air flow generating device can be disposed within the housing 210, and the generated air flow can enter the toner container 220 via the one-way valve assembly 240, increasing the internal air pressure of the toner container 220 to promote toner discharge. In a non-toner discharging state, the one-way valve assembly 240 can ensure good airtightness of the toner container 220. The one-way valve assembly 240 can adopt a one-way ball valve, but is not limited thereto.

[0051] The air flow generating device can be a fan. The fan can be disposed within the housing 210, for example, beside, below, or above the toner container 220, as long as the generated air flow can enter the toner container 220 through the one-way valve assembly 240. Specifically, as Figure 6 and 7 shown, a fan composed of a plurality of fan blades 250 is disposed on the driving force input portion 230. The fan blades 250 can rotate together with the driving force input portion 230. The fan blade air flow generated when the fan blades 250 rotate flows from the gap between the toner container 220 and the housing 210 towards the one-way valve assembly 240 ( Figure 7 the arrow in indicates the general flow path of the fan blade air flow), and the one-way valve assembly 240 is opened under the pressure of the fan blade air flow. The fan blade air flow enters the toner container 220, increasing the internal air pressure of the toner container 220 to promote toner discharge. Preferably, the one-way valve assembly 240 is provided with an air flow guiding portion (e.g., a tapered hole 241 is provided at the air inlet end of the one-way valve assembly 240) to prompt the fan blade air flow to enter the air passage of the one-way valve assembly 240.

[0052] The housing 210 can include an outer housing 210a and an inner housing 210b, but is not limited thereto. For example, it can have only the outer housing 210a.

[0053] Example 3

[0054] As Figure 8 and 9As shown in the figure, the toner replenishment cartridge of Embodiment 3 includes a housing 310 and a toner container 320. The toner container 320 is disposed within the housing 310. One end (e.g., the lower end) of the housing 310 is provided with an opening 311. The toner container 320 is provided with a toner discharge portion 321 at one end located at the opening 311. The toner within the toner container 320 can be discharged from the toner discharge portion 321.

[0055] A screw 340 is disposed within the toner container 320. The screw 340 is fixedly disposed relative to the housing 310, and the toner container 320 is rotatably disposed within the housing 310. When the toner container 320 rotates, the screw 340 rotates relative to the toner container 320, pushing the toner in the direction of the toner discharge portion 321, thereby facilitating the discharge of the toner. It has the advantages of simple structure, low manufacturing difficulty, and low cost.

[0056] The toner container 320 is configured to rotate by directly or indirectly receiving a driving force from an electrophotographic imaging device. Preferably, the toner discharge portion 321 itself is provided with a driving force receiving structure (driving force input portion) for receiving the rotational driving force, such that the toner container 320 directly receives the driving force from the electrophotographic imaging device and rotates, i.e., rotates along with the rotation of the driving force input portion, to simplify the structure. As a variation, the toner replenishment cartridge can also be separately provided with a driving force input portion for receiving the rotational driving force. For example, a driving force input portion is installed on the toner discharge portion 321, and this driving force input portion can transmit the rotational driving force to the toner container 320, causing the toner container 320 to rotate.

[0057] As Figure 9 shown in the figure, the housing 310 can include an outer housing 310a and an inner housing 310b. The inner housing 310b can be rotationally engaged with the toner container 320. The connecting seat 341 of the screw 340 can be fixedly connected to the inner housing 310b, and a dynamic seal fit can be formed between the connecting seat 341 and the toner container 320. The housing 310 can only have the outer housing 310a, and the connecting seat 341 of the screw 340 can be fixedly connected to the outer housing 310a.

[0058] Example 4

[0059] As Figures 10-12 shown in the figure, the toner replenishment cartridge of Embodiment 4 includes a housing 410, a toner container 420, and a driving force input portion 430. The toner container 420 is disposed within the housing 410. One end (e.g., the lower end) of the housing 410 is provided with an opening 411. The toner container 420 is provided with a toner discharge portion 421 at one end located at the opening 411. The toner discharge portion 421 is used to discharge the toner within the toner container 420. The driving force input portion 430 is rotatably sleeved on the toner discharge portion 421 for receiving an external rotational driving force.

[0060] Further, the toner replenishment cartridge further includes a volume variable member 440 and a pressing member 450. The volume variable member 440 can be disposed at one end of the toner container 420 relative to the toner discharge portion 421. The volume variable member 440 communicates with the inner cavity of the toner container 420. The pressing member 450 is used to apply pressure to the volume variable member 440 to compress the volume variable member 440. When the volume variable member 440 is compressed, the gas inside it will enter the toner container 420, increasing the air pressure inside the toner container 420 to facilitate toner discharge.

[0061] In the embodiment, the pressing member 450 is arranged to press the volume variable member 440 as the driving force input portion 430 rotates. The pressing member 450 is generally in a cylindrical structure and can be slidably sleeved on the toner container 420 from one end of the toner container 420 where the volume variable member 440 is provided. The pressing member 450 has a pressing plate 451 in contact with the volume variable member 440. When the pressing member 450 moves towards the toner discharge portion 421, the pressing plate 451 can compress the volume variable member 440. Preferably, the toner container 420 has a plurality of arc-shaped protrusions 422 arranged around the volume variable member 440, and correspondingly, arc-shaped holes 452 allowing the arc-shaped protrusions 422 to pass through are provided on the pressing plate 451 to increase the actual compressible amount of the volume variable member 440.

[0062] The toner replenishment cartridge further has a pull cord 460 for causing the pressing member 450 to move towards the toner discharge portion 421 to press the volume variable member 440. One end of the pull cord 460 can be connected to a rotating member 470 provided on the housing 410, and the other end of the pull cord 460 can be connected to the housing 410 or the pressing member 450, such as being connected to a pull cord fixing portion 412 provided on the inner wall of the housing 410. The middle section of the pull cord 460 bypasses the pressing plate 451, for example, bypassing the pressing plate 451 from above the pressing member 450. Preferably, the pull cord fixing portion 412 and the rotating member 470 are arranged on opposite sides of the toner container 420 to make the acting force exerted by the pull cord 460 on the pressing member 450 more uniform.

[0063] In the embodiment, the rotating member 470 is in transmission cooperation with the driving force input portion 430 to rotate as the driving force input portion 430 rotates. Among them, the rotation axes of the rotating member 470 and the driving force input portion 430 can be perpendicular to each other. For example, the driving force input portion 430 has a bevel gear 431, and the rotating member 470 has a bevel gear 471 meshing with the bevel gear 431, so that the rotating member 470 rotates as the driving force input portion 430 rotates. The pull cord 460 can be wound around the rotating member 470 as the rotating member 470 rotates. When the pull cord 460 is wound, it exerts an acting force on the pressing member 450, causing the pressing member 450 to move towards the toner discharge portion 421.

[0064] Preferably, the pressing plate 451 is provided with a limiting hole or a limiting groove 453 for the pulling rope to pass through, so as to prevent the pulling rope 460 from detaching from the pressing plate 451, and ensure that the pulling rope 460 can stably apply a force to the pressing member 450 during the winding process. The limiting hole or the limiting groove 453 can be arranged at the central position of the pressing plate 451.

[0065] Example 5

[0066] The difference between Embodiment 5 and Embodiment 4 lies in the different winding structures of the pulling rope. Only the winding structure of the pulling rope in Embodiment 5 will be specifically described below, and other unmentioned contents can refer to the relevant descriptions of the foregoing Embodiment 4.

[0067] In Embodiment 5, as Figure 13 shown, one end of the pulling rope 460 is connected to the driving force input part 430, and the other end of the pulling rope 460 can be connected to the housing 410 or the pressing member 450, for example, after bypassing the pressing plate 451 and then connected to the pressing member 450 or the housing 410. When the driving force input part 430 rotates, the pulling rope 460 is wound around the driving force input part 430, and then pulls the pressing member 450 to move towards the toner discharging part 421, so as to press the volume variable member 440, so that the gas in the volume variable member 440 enters the toner container 420 to promote the toner discharge. In this way, the setting of the rotating member 470 can be omitted to further simplify the structure.

[0068] Preferably, a winding guiding part 423 can be arranged at a position on the toner container 420 close to the driving force input part 430 or on the driving force input part 430. The winding guiding part 423 is formed with a hole or a groove for the pulling rope 460 to pass through. After the pulling rope 460 passes through the winding guiding part 423, it turns, so that it can be stably wound around the driving force input part 430.

[0069] Example 6

[0070] The difference between Embodiment 6 and Embodiment 4 lies in the different pressing mechanisms of the volume variable member 440. Only the pressing mechanism of the volume variable member 440 in Embodiment 6 will be specifically described below, and other unmentioned contents can refer to the relevant descriptions of the foregoing Embodiment 4.

[0071] As Figures 14-16As shown, in Embodiment 6, the toner replenishment cartridge is provided with a substantially L-shaped push rod 510 for pushing the pressing member 450. The push rod 510 is arranged to apply a force to the pressing member 450 in response to the rotation of the driving force input portion 430, so that the pressing member 450 moves toward the toner discharge portion 421 to press the volume variable member 440, and the volume variable member 440 is compressed. When the volume variable member 440 is compressed, the gas inside it will enter the toner container 420, increasing the air pressure in the toner container 420 to promote toner discharge.

[0072] Further, a transmission mechanism is provided between the driving force input portion 430 and the push rod 450. The driving force input portion 430 can drive the push rod 510 to apply a force to the pressing member 450 through this transmission mechanism, and further enable the pressing member 450 to press the volume variable member 440. In the embodiment, the transmission mechanism includes an intermediate gear 520, a rack 530, and a lever 540. The rotation axis of the intermediate gear 520 is perpendicular to the rotation axis of the driving force input portion 430, and the rack 530 is arranged to move along the axial direction of the driving force input portion 430.

[0073] The rack 530 can be slidably arranged on the housing 410 or the pressing member 450, for example, slidably engaged with a guide groove 454 provided on the pressing member 450. The intermediate gear 520 can be rotatably arranged on the housing 410 and includes a cylindrical gear 522 and a bevel gear 521. Among them, the cylindrical gear 522 meshes with the rack 530, and the bevel gear 521 meshes with the bevel gear 431 of the driving force input portion 430. The lever 540 is rotatably arranged on the toner container 420 or the housing 410, for example, rotates around a rotation fulcrum 541 provided on the toner container 420. One end of the lever 540 is movably connected to the push rod 510 (for example, hinged), and the other end of the lever 540 is movably connected to the rack 530 (for example, abuts).

[0074] Taking Figure 16 the shown orientation as a reference, when the driving force input portion 430 receives a rotational driving force from the electrophotographic imaging device, it drives the rack 540 to move upward along the guide groove 454 through the intermediate gear 520. The lever 540 rotates around the rotation fulcrum 541 accordingly, so that the push rod 510 moves downward. The pressing portion 511 of the push rod 510 pushes the pressing member 450 to move toward the toner discharge portion 421, and the pressing plate 451 presses the volume variable member 440. The volume variable member 440 is compressed, and the gas inside it will enter the toner container 420, increasing the air pressure in the toner container 420 to promote toner discharge. Among them, the pressing portion 511 can be arranged in the limiting groove 453 on the pressing plate 451 to ensure that the pressing portion 511 stably applies a force to the pressing plate 451.

[0075] Although the present utility model has been depicted through the embodiments above, it should be understood that the above embodiments are only used to exemplarily describe the feasible implementation schemes of the present utility model, and should not be construed as limiting the protection scope of the present utility model. That is, any substitution or change made by those skilled in the art in accordance with the present utility model should also be covered by the protection scope of the claims of the present utility model.

Claims

1. A toner supply box, comprising a housing and a toner container disposed in the housing, the toner container being provided with a toner discharge portion, the toner discharge portion being provided with a driving force input portion for receiving an external rotational driving force; characterized in that: The toner container is configured to automatically discharge toner as the driving force input portion rotates; The driving force input part can be rotatably mounted on the carbon powder discharge part, and one of the driving force input part and the carbon powder container has a protrusion protruding along the axial direction of the driving force input part, and the other of the driving force input part and the carbon powder container has a recessed part recessed along the axial direction of the driving force input part; as the driving force input part rotates, the protrusion can enter and exit the recessed part, so that the carbon powder container shakes along the axial direction of the driving force input part and automatically discharges the carbon powder.

2. A toner supply box, comprising a housing and a toner container disposed in the housing, the toner container being provided with a toner discharge portion, the toner discharge portion being provided with a driving force input portion for receiving an external rotational driving force; characterized in that: The toner container is configured to automatically discharge toner as the driving force input portion rotates; The driving force input part is rotatably mounted on the carbon powder discharge part, and a fan is arranged in the shell, and the fan has blades arranged on the driving force input part; the carbon powder container is provided with a one-way valve assembly, and the airflow generated by the fan when working enters the interior of the carbon powder container through the one-way valve assembly to automatically discharge the carbon powder.

3. A toner supply box, comprising a housing and a toner container disposed in the housing, the toner container being provided with a toner discharge portion, the toner discharge portion being provided with a driving force input portion for receiving an external rotational driving force; characterized in that: The toner container is configured to automatically discharge toner as the driving force input portion rotates; A screw for conveying toner to the toner discharge portion is disposed in the toner container, and the screw is fixedly disposed relative to the shell; the toner container is rotatably disposed in the shell and can rotate along with the rotation of the driving force input portion.

4. A toner supply box, comprising a housing and a toner container disposed in the housing, the toner container being provided with a toner discharge portion, the toner discharge portion being provided with a driving force input portion for receiving an external rotational driving force; characterized in that: The toner container is configured to automatically discharge toner as the driving force input portion rotates; the driving force input portion is rotatably mounted on the toner discharge portion; The toner refill box also includes: A variable volume member, disposed at one end of the toner container opposite to the toner discharge portion; A pressing component, used for pressing the variable volume component so that the gas in the variable volume component enters the toner container; The pressing component is configured to press the variable volume member in response to the rotation of the driving force input portion, so that the carbon powder is automatically discharged.

5. The toner refill box according to claim 4, characterized in that Also includes: The pull cord is arranged to be wound along with the rotation of the driving force input portion, and when the pull cord is wound, the pressing member moves toward the toner discharge portion, thereby pressing the variable volume member.

6. The toner refill box according to claim 5, characterized in that: One end of the pull rope is connected to the driving force input part, and can be wound around the driving force input part as the driving force input part rotates.

7. The toner refill box according to claim 5, characterized in that: One end of the pull rope is connected to a rotating member, and the driving force input part is in transmission cooperation with the rotating member, so that the rotating member can rotate along with the driving force input part to wind the pull rope around the rotating member.

8. The toner refill box according to claim 4, characterized in that Also includes: The push rod is configured to apply a force to the pressing member in response to the rotation of the driving force input portion, so that the pressing member moves toward the toner discharge portion to press the variable volume member.

9. The toner refill box according to claim 8, characterized in that: A transmission mechanism is provided between the driving force input portion and the push rod, and the transmission mechanism comprises: A rack, arranged to move along the axial direction of the driving force input portion; An intermediate gear, whose rotation axis is perpendicular to the rotation axis of the driving force input part; the intermediate gear comprises a cylindrical gear and a first bevel gear, the cylindrical gear is meshed with the rack, and the first bevel gear is meshed with the second bevel gear of the driving force input part; A lever is rotatably arranged on the carbon powder container or the shell; one end of the lever is connected to the push rod, and the other end of the lever is connected to the rack.

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