Developing box

Abstract

The developing box comprises a box body, a developing assembly, a driving force receiving unit, an electric power receiving unit and a driver assembly, the box body is used for storing a developing agent, the developing assembly is installed in the box body and used for conveying the developing agent, and the driving force receiving unit is installed on the box body and is in transmission connection with the developing assembly. The power receiving unit is installed on the box body and can receive electric energy from the electrophotographic imaging device, the driver assembly is installed on the box body, is in transmission connection with the driving force receiving unit and provides driving force for the driving force receiving unit, and the driver assembly is electrically connected with the power receiving unit. According to the utility model, the problem that the gear set of the driving force receiving unit and the driving gear of the electrophotographic imaging device cannot be meshed or are not meshed completely in the process of mounting the developing box to the electrophotographic imaging device can be effectively solved; and the driver assembly is arranged in the developing box, so that the maintenance performance is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of electronic photographic imaging devices, in particular to a developing box. Background Art

[0002] The electrophotographic imaging device forms an image on a recording material by using an electrophotographic imaging type. The electrophotographic imaging device includes an electrophotographic copier, an electrophotographic printer (LED printer, laser beam printer, etc.), a fax machine, a multifunctional machine having multiple functions of these machines, a word processor, etc. Usually, the electrophotographic imaging device has a detachable processing box, and such a processing box can be divided into two types: an integrated box and a split box, wherein the split box is a box in which a developing box is separately provided from a drum assembly having a photosensitive drum, and the developing box can be detachably installed in the drum assembly.

[0003] In the prior art, the developing box includes rotating parts such as a developing roller and a powder feeding roller, and also includes a conductive unit and a driving force receiving unit, wherein the conductive unit is used to receive electric energy from the electronic photographic imaging device; the driving force receiving unit is used to receive driving force from the electronic photographic imaging device, and the driving force receiving unit includes a gear set. When the developing box is installed in the electronic photographic imaging device, the gear set and the driving gear in the electronic photographic imaging device are meshed with each other to transmit the driving force from the electronic photographic imaging device to the developing roller, the powder feeding roller and other parts to rotate them to complete the image formation work.

[0004] However, since the developer box in the prior art receives the driving force from the electronic photographic imaging device, the driving force can be transmitted only when the developer box is installed to the electronic photographic imaging device and the gear set of the developer box is engaged with the driving gear of the electronic photographic imaging device. Therefore, the prior art may have the problem that the gear set of the developer box and the driving gear of the electronic photographic imaging device cannot be engaged or is not fully engaged due to the installation error of the developer box. At the same time, the developer box receives the driving force from the electronic photographic imaging device, which is not conducive to the user's maintenance of the wear and aging of the driving parts during use, and the maintenance performance is low.

[0005] Therefore, a technical solution to the above problems is needed. Utility Model Content

[0006] In order to solve the technical problems existing in the prior art, the purpose of the utility model is to provide a developing box to solve the above-mentioned technical problems.

[0007] In order to achieve the purpose, the utility model adopts the following technical solutions:

[0008] A developing box is detachably mounted on an electronic photographic imaging device, wherein the electronic photographic imaging device is provided with a photosensitive drum, comprising:

[0009] A box body, used for storing developer;

[0010] A developing assembly is installed in the box body and is used to transport the developer to the photosensitive drum to develop an image;

[0011] A driving force receiving unit is mounted on the box body and is drivingly connected to the developing assembly;

[0012] a power receiving unit mounted on the housing and capable of receiving power from the electrophotographic imaging device; and

[0013] The driver assembly is mounted on the box body and is transmission-connected with the driving force receiving unit to provide driving force for the driving force receiving unit, and the driver assembly is electrically connected with the power receiving unit.

[0014] The developing box with the above-mentioned structure does not receive driving force from the electronic photographic imaging device, but realizes the driving rotation of the developing assembly through a built-in driver assembly. Therefore, it can effectively solve the problem that the gear group of the driving force receiving unit and the driving gear of the electronic photographic imaging device cannot be engaged or are not fully engaged during the process of installing the developing box to the electronic photographic imaging device. At the same time, the developing box has a built-in driver assembly, and maintenance of problems such as wear and aging of the driving parts can be carried out by simply disassembling the developing box from the electronic photographic imaging device, which greatly improves the maintenance performance.

[0015] Preferably, the driver assembly includes a controller, a driving motor, a driving head and a conductive member, the conductive member is electrically connected to the power receiving unit, the controller is connected to the driving motor and the conductive member, and the driving head is arranged at the driving end of the driving motor and is transmission-connected to the driving force receiving unit. Thus, the driver assembly is transmission-connected to the driving force receiving unit, and the driver assembly can provide driving force for the driving force receiving unit.

[0016] Preferably, the developing assembly includes a developing roller, a powder feeding roller, a stirring frame and a powder discharge knife arranged on the box body, and the driving force receiving unit includes a developing roller gear arranged at one end of the developing roller, a powder feeding roller gear arranged at one end of the powder feeding roller and a stirring frame gear arranged at one end of the stirring frame, and the developing roller gear, the powder feeding roller gear and the stirring frame gear are mutually transmission-connected. Thus, the developing assembly is transmission-connected to the driving force receiving unit.

[0017] Preferably, the driving head is connected to the stirring frame gear transmission. Thus, the driving force receiving unit is connected to the driver assembly transmission.

[0018] Preferably, the power receiving unit comprises a positive conductive sheet and a negative conductive sheet, and the positive conductive sheet and the negative conductive sheet are electrically connected to the conductive member through a powder feeding roller and a powder discharge knife, respectively. Thus, the power receiving unit is electrically connected to the driver assembly.

[0019] Preferably, the driving force receiving unit and the power receiving unit are arranged on opposite sides of the box body. Thus, the space design of the developing box is more reasonable.

[0020] Preferably, the driver assembly and the driving force receiving unit are arranged on the same side of the box body, thereby facilitating transmission connection between the driver assembly and the driving force receiving unit.

[0021] Preferably, a mounting groove for mounting the driver assembly is provided on the box body, thereby providing a specific mounting structure for the driver assembly.

[0022] Preferably, the developing box further comprises a protective cover, which is mounted on the box body and located outside the driving force receiving unit, so that the driving force receiving unit can be protected by the protective cover.

[0023] Preferably, the developing box further comprises a storage unit, and the storage unit is arranged at the rear end of the developing box installation direction. Thus, the electronic photographic imaging device can read the information of the developing box through the storage unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0025] Figure 1 It is a three-dimensional diagram of the developing box in the utility model installed in the electronic photographic imaging device;

[0026] Figure 2 It is a three-dimensional diagram of the developing box in the utility model observed from the top;

[0027] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of the A position in the middle;

[0028] Figure 4 It is a three-dimensional diagram of the developing box in the utility model observed from the bottom;

[0029] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of position B in the middle;

[0030] Figure 6 The conductive part of the utility model is electrically connected to the power receiving unit through the powder feeding roller and the powder discharge knife. Figure 1 ;

[0031] Figure 7 The conductive part of the utility model is electrically connected to the power receiving unit through the powder feeding roller and the powder discharge knife. Figure 2;

[0032] Figure 8 It is a cross-sectional view of the developing box in the utility model;

[0033] Fig. 9 It is a three-dimensional diagram of the protective cover in the utility model.

[0034] In the figure: 100, electronic photographic imaging device; 110, mounting portion; 120, cover; 121, contact pin portion; 200, developer box; 210, box body; 211, powder bin; 212, first opening; 213, mounting groove; 214, mounting column; 220, developer assembly; 221, developer roller; 222, powder feeding roller; 223, stirring frame; 224, powder knife; 2241, powder knife frame; 2242, powder blade; 2243, solid Stator; 230, driving force receiving unit; 231, developing roller gear; 232, powder feeding roller gear; 233, stirring frame gear; 240, power receiving unit; 241, positive conductive sheet; 242, negative conductive sheet; 250, driver assembly; 251, controller; 252, driving motor; 253, driving head; 2531, driving gear; 254, conductive member; 260, protective cover; 261, mounting hole; 270, storage unit. DETAILED DESCRIPTION

[0035] In order to better understand the technical solution of the present utility model, the embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0036] It should be clear that the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] like Figure 1 As shown, a developing cartridge 200 is detachably mounted on an electronic photographic imaging device 100. The electronic photographic imaging device 100 is provided with a mounting portion 110 for mounting the developing cartridge 200 and a drum assembly, wherein the drum assembly includes components such as a photosensitive drum. Specifically, a cover 120 is provided on the outer side of the mounting portion 110. The cover 120 is rotatably mounted on the electronic photographic imaging device 100 and can be used to open or close the mounting portion 110. Further, when the electronic photographic imaging device 100 involves color imaging, the developing cartridge 200 can accommodate developers of different colors. The drum assembly in the electronic photographic imaging device 100 can be installed with multiple developing cartridges 200 storing developers of different colors. For example, the drum assembly can be installed with four developing cartridges 200 storing developers of different colors, wherein black, cyan, red and yellow developers are respectively contained. The working method of the electronic photographic imaging device 100 is prior art and will not be described here.

[0038] refer to Figures 1 to 9 The present embodiment provides a developing box 200, which includes a box body 210, a developing assembly 220, a driving force receiving unit 230, a power receiving unit 240 and a driver assembly 250. The box body 210 generally includes a powder bin 211 for storing developer. The developing assembly 220 is arranged in the box body 210. When the developing box 200 is installed in the drum assembly of the electronic photographic imaging device 100, the developing assembly 220 is used to transport the developer in the powder bin 211 to the photosensitive drum of the drum assembly. The driving force receiving unit 230, the power receiving unit 240 and the driver assembly 250 are all arranged on the box body 210. The driving force receiving unit 230 is transmission-connected with the developing assembly 220, and can drive the developing assembly 220 to rotate in the box body 210 and transmit the developer. The power receiving unit 240 is electrically connected to part of the developing assembly 220, and can provide electrical energy to part of the developing assembly 220. Specifically, in this embodiment, the driving force receiving unit 230 and the power receiving unit 240 are arranged on different sides of the box body 210. The side where the driving force receiving unit 230 is arranged is the driving side of the box body 210, and the side where the power receiving unit 240 is arranged is the conductive side of the box body 210. The driving force receiving unit 230 and the driver assembly 250 are arranged on the same side of the box body 210. The driver assembly 250 is transmission-connected to the driving force receiving unit 230, and the driver assembly 250 is electrically connected to the power receiving unit 240. When the developing box 200 is installed in the electronic photographic imaging device 100, the power receiving unit 240 is electrically connected to the electronic photographic imaging device 100 and receives electric energy. The power receiving unit 240 transmits the electric energy to the driver assembly 250, so that the driver assembly 250 works, thereby providing driving force for the driving force receiving unit 230, so that the driving force receiving unit 230 drives the developing assembly 220 to transport the developer to the photosensitive drum of the drum assembly.

[0039] refer to Figure 8 The developing assembly 220 includes a developing roller 221, a powder feeding roller 222 and a stirring frame 223. The box body 210 is provided with a first opening 212 on one side. The developing roller 221 is rotatably arranged at the first opening 212, so that the developing roller 221 is arranged in the box body 210 and partially extends out of the box body 210. When the developing roller 221 rotates, the developer in the box body 210 can be delivered. The powder feeding roller 222 is arranged on the inner side of the developing roller 221, that is, it is farther away from the first opening 212 than the developing roller 221. It can transport the developer to the developing roller 221. The stirring frame 223 is arranged in the powder bin 211. On the one hand, it can transport the developer in the powder bin 211 to the powder feeding roller 222. On the other hand, it can stir the developer in the powder bin 211 to prevent the developer from agglomerating in the powder bin 211 and affecting the use and transportation of the developer.

[0040] refer to Figure 2 , Figure 3 and Figure 8 The developing assembly 220 further includes a powder knife 224, which includes a powder knife holder 2241, a powder blade 2242 and a fixing portion 2243. The powder knife holder 2241 is mounted on the box body 210, one end of the powder blade 2242 is fixedly connected to the powder knife holder 2241, and the other end is bent toward the developing roller 221 to be close to the developing roller 221. The powder blade 2242 can be used to control the thickness of the developer on the developing roller 221 to ensure that the thickness of the developer on the developing roller 221 is uniform. Specifically, in this embodiment, the powder knife holder 2241 is a metal knife holder, and the powder blade 2242 is a metal blade, both of which can conduct electricity. In the length direction of the box body 210, the two ends of the powder knife holder 2241 are fixed to the box body 210 through two fixing portions 2243 respectively.

[0041] refer to Figures 2 to 5 The driving force receiving unit 230 is arranged at one end of the box body 210 in the length direction, and includes a developing roller gear 231 arranged at one end of the developing roller 221, a powder feeding roller gear 232 arranged at one end of the powder feeding roller 222, and a stirring frame gear 233 arranged at one end of the stirring frame 223. Specifically, in this embodiment, the developing roller 221, the powder feeding roller 222 and the stirring frame 223 all have a rotating shaft arranged parallel to the length direction of the box body 210, and the developing roller 221, the powder feeding roller 222 and the stirring frame 223 are rotatably supported on the box body 210 by the rotating shaft, and a part of the rotating shafts of the developing roller 221, the powder feeding roller 222 and the stirring frame 223 protrudes from one end of the length direction of the box body 210, and the developing roller gear 231, the powder feeding roller gear 232 and the stirring frame gear 233 are respectively connected to the developing roller 221, the powder feeding roller 222 and the stirring frame 223. On the part of the rotating shaft extending at one end of the box body 210 in the length direction, the developing roller gear 231, the powder feeding roller gear 232 and the stirring rack gear 233 are all arranged on the same end of the box body 210; and the powder feeding roller gear 232 is a two-stage gear, the first-stage teeth of which mesh with the developing roller gear 231, and the other-stage teeth of which mesh with the stirring rack gear 233, so that the powder feeding roller gear 232, the developing roller gear 231 and the stirring rack gear 233 are connected to each other by transmission, and rotating one of them can make the other two rotate simultaneously, so that the developing assembly 220 can be driven to transport the developer.

[0042] refer to Figures 4 to 5The driver assembly 250 includes a controller 251, a driving motor 252, a driving head 253 and a conductive member 254. The controller 251 is electrically connected to the driving motor 252 and the conductive member 254. The conductive member 254 is electrically connected to the power receiving unit 240. The driving end of the driving motor 252 is connected to the driving head 253. The driving head 253 is transmission-connected to the driving force receiving unit 230. When the developing box 200 is installed on the electronic photographic imaging device 100, the electronic photographic imaging device 100 transmits electric energy to the power receiving unit 240. The power receiving unit 240 provides electric energy to the controller 251 through the conductive member 254. The controller 251 controls the driving motor 252 to work. The driving motor 252 drives the driving force receiving unit 230 to rotate through the driving head 253. Subsequently, the driving force receiving unit 230 transmits the driving force to the developing assembly 220, so that the developing assembly 220 transports the developer on the box body 210 to the photosensitive drum of the drum assembly. Specifically, in this embodiment, the driving head 253 is provided with a driving gear 2531, and the stirring frame gear 233 in the driving force receiving unit 230 is also a two-stage gear, whose first-stage teeth are meshed with the powder feeding roller gear 232, and the other-stage teeth are meshed with the driving gear 2531 on the driving head 253, so that the driving motor 252 drives the stirring frame gear 233 to rotate through the driving head 253, and then the stirring frame gear 233 drives the powder feeding roller gear 232 to rotate, and finally the powder feeding roller gear 232 drives the developing roller gear 231 to rotate, so that the developing assembly 220 rotates as a whole on the box body 210 to transport the developer to the photosensitive drum of the drum assembly. Alternatively, in some other embodiments, the driving gear 2531 of the driving head 253 can also be connected to the developing roller gear 231 or the powder feeding roller gear 232 in a transmission manner, as long as it can provide driving force for the driving force receiving unit 230, and the specific connection method is not limited here.

[0043] Further, refer to Figure 4 , a mounting groove 213 is provided on the box body 210, and the driver assembly 250 is installed in the mounting groove 213. Specifically, in this embodiment, a mounting groove 213 is provided at one end of the box body 210 where the driving force receiving unit 230 is installed, and the controller 251 and the driving motor 252 of the driver assembly 250 are installed in the mounting groove 213 by adhesive bonding or bolt fixing, etc., and the driving head 253 connected to the driving end of the driving motor 252 extends out of the mounting groove 213 and can be engaged with the stirring frame gear 233 of the driving force receiving unit 230, so that the driver assembly 250 and the driving force receiving unit 230 are located at the same end of the box body 210 and are transmission-connected, and at the same time, the conductive member 254 extends out of the mounting groove 213 and can be connected to the power receiving unit 240.

[0044] Further, refer to Figures 2 to 7, the conductive member 254 is electrically connected to the power receiving unit 240 through the powder feeding roller 222 and the powder discharge knife 224. Specifically, in the present embodiment, the powder feeding roller 222 includes a rotating shaft and a roller portion wrapped outside the rotating shaft, the rotating shaft of the powder feeding roller 222 is made of a conductive material, the powder discharge knife holder 2241 of the powder discharge knife 224 is made of a metal conductive material, the conductive member 254 and the driving force receiving unit 230 are located on the same side of the box body 210, the conductive member 254 includes a positive electrode and a negative electrode, and the positive electrode and the negative electrode of the conductive member 254 are respectively connected to the rotating shaft of the powder feeding roller 222 and the powder discharge knife holder 2241 on one end of the driving side of the box body 210; the power receiving unit 240 is arranged at the other end of the box body 210 opposite to the driving force receiving unit 230 in the length direction of the box body 210, that is, arranged on the conductive side of the box body 210, and at the power receiving unit 240, the power receiving unit 240 is arranged at the other end of the box body 210 opposite to the driving force receiving unit 230 in the length direction of the box body 210, that is, arranged on the conductive side of the box body 210, and at the power receiving unit 230, the power receiving unit 240 is electrically connected to the power receiving unit 230 on ... and A positive conductive sheet 241 and a negative conductive sheet 242 are provided on the receiving unit 240, and the positive conductive sheet 241 and the negative conductive sheet 242 are respectively connected to the rotating shaft of the powder feeding roller 222 and the powder discharge knife frame 2241 located on one end of the conductive side of the box body 210. The powder feeding roller 222 and the powder discharge knife frame 2241 receive electric energy from the electronic photographic imaging device 100 through the negative conductive sheet 242, and then transmit the electric energy from the conductive side of the box body 210 to the driving side, so that the conductive member 254 establishes electrical connection with the positive conductive sheet 241 and the negative conductive sheet 242 of the power receiving unit 240 through the rotating shaft of the powder feeding roller 222 and the powder discharge knife frame 2241 of the powder discharge knife 224, thereby providing electric energy for the controller 251. Alternatively, in some other embodiments, the positions of the positive conductive sheet 241 and the negative conductive sheet 242 are interchanged, that is, the positive conductive sheet 241 is used to connect to the powder discharge knife frame 2241, and the negative conductive sheet 242 is used to connect to the rotating shaft of the powder feeding roller 222. Accordingly, the positive electrode of the conductive member 254 is connected to the powder discharge knife frame 2241, and the negative electrode is connected to the rotating shaft of the powder feeding roller 222. As long as the power receiving unit 240 can transmit the electric energy received from the electronic photographic imaging device 100 to the driver assembly 250, the specific electrical connection method is not limited herein.

[0045] refer to Figure 3 , Figure 4 and Fig. 9The box body 210 is further provided with a protective cover 260, which covers the outer side of the driving force receiving unit 230 and is used to protect the driving force receiving unit 230 so that the driving force receiving unit 230 is not damaged. Specifically, in this embodiment, the protective cover 260 is provided with a plurality of mounting holes 261, and the rotating shafts of the developing roller 221, the powder feeding roller 222 and the stirring frame 223 extending out of the driving force receiving unit 230 are inserted into the mounting holes 261, so that the rotating shafts are not exposed to the outside and are protected from damage. A plurality of mounting posts 214 are also provided on the box body 210 at one end where the driving force receiving unit 230 is installed. Part of the mounting posts 214 are protrusions arranged on the end of the mounting groove 213 away from the box body 210, and part of them are cylindrical components located between the developing roller 221, the powder feeding roller 222 and the stirring frame 223 on the driving side and extending along the length direction of the box body 210. The diameter of the mounting hole 261 is slightly larger than the diameter of the mounting post 214. By installing the mounting hole 261 on the mounting post 214, the protective cover 260 is installed on the outside of the driving force receiving unit 230 to protect the driving force receiving unit 230.

[0046] refer to Figure 1 to Figure 2 The developing box 200 also includes a storage unit 270, which is arranged on the box body 210. The storage unit 270 is provided with information such as the model of the developing box 200 and the developer amount, and the position of the storage unit 270 on the developing box 200 corresponds to the position of the contact pin portion 121 set on the electronic photographic imaging device 100. When the developing box 200 is installed in the electronic photographic imaging device 100, the contact pin portion 121 abuts against the storage unit 270 and is electrically connected. Specifically, in this embodiment, the storage unit 270 is arranged at the rear end of the developer box 200 along the installation direction, and a contact pin portion 121 is provided on the cover 120 of the electronic photographic imaging device 100. When the developer box 200 is installed on the electronic photographic imaging device 100, that is, the developer box 200 is installed on the mounting portion 110, and the cover 120 is flipped to close the mounting portion 110, the contact pin portion 121 on the cover 120 abuts against and is electrically connected to the storage unit 270 on the developer box 200, so that the electronic photographic imaging device 100 can read the model information and developer quantity information on the developer box 200.

[0047] When the developing box 200 of the utility model is used, the developing box 200 is installed on the electronic photographic imaging device 100, and the positive conductive sheet 241 and the negative conductive sheet 242 provided on the power receiving unit 240 of the developing box 200 are in contact with and electrically connected to the electronic photographic imaging device 100. The electric energy of the electronic photographic imaging device 100 is transmitted to the conductive member 254 through the power receiving unit 240, the powder discharging knife frame 2241, and the rotating shaft of the powder feeding roller 222, which is the controller 251 of the driver assembly 250. Electric energy is provided, and the controller 251 controls the driving motor 252 to rotate. The driving motor 252 drives the stirring frame gear 233 to rotate through the driving head 253. The stirring frame gear 233 rotates while driving the powder feeding roller gear 232 and the developing roller gear 231 to rotate, so that the stirring frame 223, the powder feeding roller 222 and the developing roller 221 all rotate in the box body 210, and then the developer is transported in the box body 210 to the photosensitive drum of the drum assembly in the electronic photographic imaging device 100 for image formation.

[0048] The developing box of the utility model does not receive driving force from the electronic photographic imaging device, but realizes the driving rotation of the developing component by means of a built-in driver assembly. Therefore, it can effectively solve the problem that during the process of installing the developing box to the electronic photographic imaging device, the gear set of the driving force receiving unit and the driving gear of the electronic photographic imaging device cannot be engaged or is not fully engaged. At the same time, the developing box has a built-in driver assembly, and maintenance of problems such as wear and aging of the driving parts can be carried out by simply disassembling the developing box from the electronic photographic imaging device, which greatly improves the maintenance performance.

[0049] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A developing cartridge, detachably mounted on an electronic photographic imaging device, wherein the electronic photographic imaging device is provided with a photosensitive drum, characterized in that: The developing box comprises: A box body, used for storing developer; A developing assembly, installed in the box body, used for conveying the developer to the photosensitive drum for developing an image; A driving force receiving unit, mounted on the box body and drivingly connected to the developing assembly; a power receiving unit mounted on the housing and capable of receiving power from the electrophotographic imaging device; and A driver assembly is mounted on the box body and is transmission-connected to the driving force receiving unit to provide driving force for the driving force receiving unit. The driver assembly is electrically connected to the power receiving unit.

2. A developing cartridge according to claim 1, characterized in that: The driver assembly includes a controller, a driving motor, a driving head and a conductive member, wherein the conductive member is electrically connected to the power receiving unit, the controller connects the driving motor and the conductive member, and the driving head is arranged at the driving end of the driving motor and is transmission-connected to the driving force receiving unit.

3. A developing box according to claim 2, characterized in that: The developing assembly includes a developing roller, a powder feeding roller, a stirring frame and a powder discharge knife arranged on the box body, and the driving force receiving unit includes a developing roller gear arranged at one end of the developing roller, a powder feeding roller gear arranged at one end of the powder feeding roller and a stirring frame gear arranged at one end of the stirring frame, and the developing roller gear, the powder feeding roller gear and the stirring frame gear are connected to each other through transmission.

4. A developing cartridge according to claim 3, characterized in that: The driving head is connected to the stirring frame through gear transmission.

5. A developing cartridge according to claim 3, characterized in that: The power receiving unit comprises a positive conductive sheet and a negative conductive sheet, and the positive conductive sheet and the negative conductive sheet are electrically connected to the conductive member through the powder feeding roller and the powder discharge knife respectively.

6. A developing cartridge according to any one of claims 1 to 5, characterized in that: The driving force receiving unit and the power receiving unit are disposed on opposite sides of the case.

7. A developing cartridge according to any one of claims 1 to 5, characterized in that: The driver assembly and the driving force receiving unit are disposed on the same side of the case.

8. A developing cartridge according to any one of claims 1 to 5, characterized in that: The box body is provided with a mounting slot for mounting the driver assembly.

9. A developing cartridge according to any one of claims 1 to 5, characterized in that: The invention also includes a protective cover which is mounted on the box body and is located outside the driving force receiving unit.

10. A developing cartridge according to any one of claims 1 to 5, characterized in that: A storage unit is also included, and the storage unit is arranged at the rear end of the developing box along the installation direction.

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