Integrated toner cartridge and electrophotographic imaging equipment

Abstract

The utility model provides an integrated toner cartridge and electrophotographic imaging equipment, the integrated toner cartridge comprises an imaging unit and a developing unit, the imaging unit comprises a waste powder bin, a photosensitive drum and a driving wheel set, the photosensitive drum is rotatably installed on the waste powder bin, the end part of the photosensitive drum is provided with a photosensitive drum gear, and the driving wheel set is connected with the photosensitive drum gear. The developing unit comprises a powder bin, a developing roller and a stirring frame, the developing roller is rotationally installed on the powder bin, a developing roller gear is arranged at the end of the developing roller and meshed with the photosensitive drum gear, the stirring frame is rotationally installed on the powder bin, a stirring frame gear is arranged at the end of the stirring frame, and the stirring frame gear is meshed with the photosensitive drum gear. The transmission wheel set comprises a first idle wheel and a second idle wheel, the first idle wheel is meshed with the photosensitive drum gear, and the second idle wheel is meshed between the first idle wheel and the stirring frame gear. The electrophotographic imaging equipment is provided with the integrated toner cartridge, and the integrated toner cartridge adopts parallel power transmission, so that the transmission torque can be reduced, and the smooth transmission of the toner can be ensured.

Description

Technical Field

[0001] This utility model relates to the field of electrophotographic imaging technology, specifically, to the design of an integrated toner cartridge and an electrophotographic imaging device equipped with an integrated toner cartridge. Background Technology

[0002] Toner cartridges (such as integrated toner cartridges and separate toner cartridges) are one of the core components of electrophotographic imaging equipment. They store toner and convert the electrostatic latent image formed by the photosensitive drum into a visible image during the development process. A toner cartridge includes a photosensitive unit and a developing unit. The photosensitive unit includes a waste toner container and components such as a photosensitive drum, charging roller, and cleaning blade mounted on it. The developing unit includes a toner container and components such as a developing roller, stirring rack, and toner dispensing blade mounted on it. The photosensitive drum, developing roller, and stirring rack are powered via gear sets, allowing the power input from the drive source to control the rotation of these components.

[0003] Currently, the driving force transmission method for integrated toner cartridges is a series power transmission, such as... Figure 1 As shown, the photosensitive drum gear 91 receives driving force by engaging with the connecting recess on the drive head via the connecting protrusion 911 on it. This allows the power input from the drive source to be transmitted to the photosensitive drum gear 91 first, then from the photosensitive drum gear 91 to the developing roller gear 92, then from the developing roller gear 92 to the first idler gear 931 of the gear set 93, then from the first idler gear 931 to the second idler gear 932 of the gear set 93, and finally from the second idler gear 932 to the stirring rack gear 94. However, this series power transmission has the disadvantages of large transmission torque and complex transmission structure, which makes the connecting protrusion 911 and the connecting recess prone to wear, causing damage to the photosensitive drum gear 91, the drive head and the drive mechanism, shortening the service life of the integrated toner cartridge and the electrophotographic imaging equipment. In addition, excessive transmission torque will also affect the toner transfer effect, thus affecting the print quality. Summary of the Invention

[0004] To address the aforementioned problems, the main objective of this invention is to provide an integrated toner cartridge that employs parallel power transmission, thereby reducing transmission torque and ensuring smooth toner delivery.

[0005] Another objective of this invention is to provide an electronic photographic imaging device equipped with the aforementioned integrated toner cartridge.

[0006] To achieve the primary objective of this utility model, it provides an integrated toner cartridge comprising an imaging unit and a developing unit. The imaging unit includes a waste toner hopper and a photosensitive drum, the photosensitive drum being rotatably mounted on the waste toner hopper. A photosensitive drum gear is located at the end of the photosensitive drum, and a connecting protrusion is formed at the end of the photosensitive drum gear away from the drum body. The developing unit includes a toner hopper, a developing roller, and a stirring frame. The developing roller is rotatably mounted on the toner hopper, and a developing roller gear is located at the end of the developing roller, meshing with the photosensitive drum gear. The stirring frame is rotatably mounted on the toner hopper, and a stirring frame gear is located at the end of the stirring frame. The integrated toner cartridge also includes a transmission wheel assembly, comprising a first idler wheel and a second idler wheel. The first idler wheel meshes with the photosensitive drum gear, and the second idler wheel meshes between the first idler wheel and the stirring frame gear.

[0007] As can be seen from the above, this design enables parallel power transmission between the photosensitive drum gear and the developing roller gear, as well as between the photosensitive drum gear and the transmission wheel assembly and the stirring frame gear. This allows the photosensitive drum gear to transmit driving force synchronously, effectively reducing transmission torque and solving the problem of high transmission torque in traditional series power transmission. It also makes the toner transfer within the toner cartridge smoother. Furthermore, it avoids damage to the photosensitive drum gear and the drive head of the electrophotographic imaging equipment caused by excessive transmission torque, extending the service life of the integrated toner cartridge and the electrophotographic imaging equipment. Moreover, the above design can effectively improve transmission efficiency and reduce energy loss.

[0008] In a preferred embodiment, the first idler wheel has a first tooth and a second tooth. The first tooth meshes with the photosensitive drum gear. The first pitch circle diameter of the first tooth is smaller than the fifth pitch circle diameter of the photosensitive drum gear, and the second pitch circle diameter of the second tooth is smaller than the first pitch circle diameter. The second idler wheel has a third tooth and a fourth tooth. The third tooth meshes with the second tooth. The third pitch circle diameter of the third tooth is larger than the second pitch circle diameter, and the fourth pitch circle diameter of the fourth tooth is smaller than the third pitch circle diameter. The fourth tooth meshes with the agitator gear, and the fourth pitch circle diameter is smaller than the sixth pitch circle diameter of the agitator gear.

[0009] As can be seen from the above, this design can achieve independent transmission ratio control, optimize transmission ratio design, and at the same time, it can achieve load diversion for the first idler wheel and the second idler wheel, reducing tooth surface contact stress.

[0010] A further proposed design is that the diameter of the third pitch circle is 1.2 to 2 times that of the second pitch circle, and the diameter of the sixth pitch circle is 1.8 to 2.5 times that of the fourth pitch circle.

[0011] As can be seen from the above, this design can ensure that the rotation speed of the stirring rack and the stirring effect of the toner in the powder hopper meet the usage requirements, while ensuring transmission efficiency and dynamic stability.

[0012] Another preferred option is that both the first idler gear and the second idler gear are single-layer gears.

[0013] As can be seen from the above, this design simplifies the structure of the first and second idler wheels while ensuring that the rotation of the mixing rack meets the requirements, and reduces the space required by the first and second idler wheels, which is conducive to increasing the powder hopper capacity.

[0014] A further proposed design is that the pitch circle diameter of the first idler wheel is smaller than that of the photosensitive drum gear, and the pitch circle diameter of the first idler wheel is equal to that of the second idler wheel, while the pitch circle diameter of the stirring frame gear is 1.8 to 2.5 times that of the second idler wheel.

[0015] As can be seen from the above, through the above design, the transmission ratio between the photosensitive drum gear, the transmission wheel set, and the stirring frame gear can be equivalent to the transmission ratio between the photosensitive drum gear, the first idler gear (or the second idler gear), and the stirring frame gear. This reduces the diameter of the stirring frame gear, preventing it from occupying too much space in the electrophotographic imaging equipment due to its large diameter, and avoids the need to design a special space and / or structure to avoid the stirring frame gear in the electrophotographic imaging equipment, thus simplifying the structure of the electrophotographic imaging equipment. At the same time, it also reduces the bending stress on the teeth of each gear, preventing the teeth of each gear from being overloaded.

[0016] Another preferred option is that the developing roller gear is a single-layer gear.

[0017] As can be seen from the above, since the developing roller gear does not need to participate in other subsequent transmission stages, designing the developing roller gear as a single-layer gear can effectively reduce the space occupied by the developing roller gear, thereby increasing the capacity of the powder hopper.

[0018] Another preferred embodiment is that the photosensitive drum gear, the developing roller gear, the stirring frame gear, the first idler gear, and the second idler gear are all helical gears.

[0019] As can be seen from the above, this design can improve the smoothness of the transmission and make each gear have a stronger load-bearing capacity and a higher transmission effect. At the same time, it can also adapt to high-speed heavy-load transmission environment to ensure that the stirring rack and developing roller can meet the usage requirements.

[0020] A further proposed solution is to have the waste toner hopper and the toner hopper movably connected, and the developing roller gear and the first idler gear to be separably meshed with the photosensitive drum gear.

[0021] As can be seen from the above, the separable meshing of the developing roller gear, the first idler gear, and the photosensitive drum gear makes cleaning the photosensitive drum more convenient, while also reducing the load and energy consumption of the drive mechanism of the electrophotographic imaging equipment during the photosensitive drum cleaning process.

[0022] A further embodiment includes an imaging unit that also includes a charging roller and a cleaning blade, both of which are mounted in a waste toner hopper. The blades of both the charging roller and the cleaning blade are in contact with the photosensitive drum. Along the rotation direction of the photosensitive drum, the cleaning blade is located upstream of the charging roller. The developing unit also includes a toner discharge blade, which is mounted on the toner hopper and has its blade in contact with the developing roller.

[0023] As can be seen above, the charging roller is used to charge the photosensitive drum, so that an electrostatic latent image is formed on the surface of the photosensitive drum after being irradiated by a laser beam; the cleaning blade can clean the surface of the photosensitive drum to ensure the uniformity of toner adhesion to the electrostatic latent image, thereby ensuring image quality; the toner removal blade is used to control the thickness and uniformity of the toner layer on the developing roller, so that the toner on the developing roller can be uniformly transferred to the electrostatic latent image formed on the photosensitive drum, thereby ensuring image quality.

[0024] To achieve another objective of this utility model, this utility model provides an electronic photographic imaging device, including a body and a drive mechanism. The body has a cartridge mounting cavity, the drive mechanism is installed inside the body, the drive head of the drive mechanism extends into the cartridge mounting cavity, and the protruding end of the drive head has a connecting recess. The aforementioned integrated toner cartridge is installed inside the cartridge mounting cavity, and the connecting recess and the connecting protrusion are connected in a cooperative manner.

[0025] As can be seen from the above, by using the aforementioned integrated toner cartridge, the electrophotographic imaging equipment can extend the service life of its drive mechanism. Attached Figure Description

[0026] Figure 1 This is a partial structural diagram of the existing integrated toner cartridge of this utility model, with some components omitted.

[0027] Figure 2 This is a structural diagram of the first embodiment of the integrated toner cartridge of this utility model.

[0028] Figure 3 This is a partial structural diagram of the first embodiment of the integrated toner cartridge of this utility model, after omitting the first part of the components.

[0029] Figure 4 This is a partial structural diagram of the second omitted component of the first embodiment of the integrated toner cartridge of this utility model.

[0030] Figure 5 This is a partial structural diagram of the first omitted component of the second embodiment of the integrated toner cartridge of this utility model.

[0031] Figure 6 This is a partial structural diagram of the second embodiment of the integrated toner cartridge of this utility model, after omitting some components.

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0033] First embodiment of integrated toner cartridge

[0034] Reference Figures 2 to 4 The integrated toner cartridge 100 includes an imaging unit 1, a developing unit 2, and a drive wheel assembly 3.

[0035] Imaging unit 1 includes waste toner hopper 11, photosensitive drum 12, charging roller and cleaning blade. Photosensitive drum 12 is rotatably mounted on waste toner hopper 11 around its own axis. Photosensitive drum 12 has a photosensitive drum gear 121 at its end. The end of photosensitive drum gear 121 away from the drum body of photosensitive drum 12 has a connecting protrusion 1211. The connecting protrusion 1211 is used to dock with the drive head 4 of the drive mechanism in the electrophotographic imaging device. Specifically, the protruding end of the drive head 4 has a connecting recess 41 that cooperates with the connecting protrusion 1211. When the integrated toner cartridge 100 is installed in the cartridge mounting cavity in the electrophotographic imaging device, the connecting protrusion 1211 of the photosensitive drum gear 121 docks with the connecting recess 41 of the drive head 4 so that the drive head 4 can drive the photosensitive drum 12 to rotate.

[0036] The charging roller is installed on the waste toner hopper 11 and is in approximately parallel contact with the photosensitive drum 12. The charging roller is used to charge the photosensitive drum 12 so that after the photosensitive drum 12 is irradiated by the laser beam in the electrophotographic imaging device, an electrostatic latent image is formed on its own surface. When the toner of the developing unit 2 is transferred to the electrostatic latent image of the photosensitive drum 12, the electrostatic latent image is developed.

[0037] A cleaning blade is installed on the waste toner hopper 11. The blade of the cleaning blade contacts the surface of the photosensitive drum 12. Along the rotation direction of the photosensitive drum 12, the cleaning blade is located at the upstream end of the charging roller. The cleaning blade is used to clean the photosensitive drum 12 after the transfer operation is completed, so as to scrape off the waste toner remaining on the photosensitive drum 12 and collect the waste toner into the waste toner hopper 11.

[0038] The developing unit 2 includes a toner hopper 21, a developing roller 22, a stirring frame 23, and a toner discharge blade. The toner hopper 21 is movably connected to the waste toner hopper 11. The toner hopper 21 stores toner to supply to the integrated toner cartridge 100. The developing roller 22 is rotatably mounted on the toner hopper 21 around its own axis of rotation, and the developing roller 22 is located at the toner outlet of the toner hopper 21, so that the developing roller 22 can transfer the toner in the toner hopper 21 to the photosensitive drum 12. The end of the developing roller 22 is provided with a developing roller gear 221. The developing roller gear 221 is detachably meshed with the photosensitive drum gear 121 through the movable connection between the toner hopper 21 and the waste toner hopper 11, so that the photosensitive drum 12 can drive the developing roller 22 to rotate synchronously through the photosensitive drum gear 121 and the developing roller gear 221.

[0039] The stirring rack 23 is rotatably mounted on the powder hopper 21. The stirring rack 23 is used to stir the toner stored in the powder hopper 21 to prevent the toner from clumping together. The end of the stirring rack 23 is provided with a stirring rack gear 231.

[0040] A toner scraper is installed on the toner hopper 21, with its blade located at the air outlet of the toner hopper 21 and in contact with the surface of the developing roller 22. The toner scraper is used to scrape the toner adsorbed on the surface of the developing roller 22 evenly, so that the toner adsorbed on the developing roller 22 is evenly distributed and the thickness of the toner layer is consistent, thus ensuring the development quality and imaging quality of the electrostatic latent image.

[0041] The transmission wheel assembly 3 includes a first idler wheel 31 and a second idler wheel 32. The first idler wheel 31 meshes with the photosensitive drum gear 121, and the second idler wheel 32 meshes between the first idler wheel 31 and the stirring frame gear 231. Preferably, the first idler wheel 31 is detachably meshed with the photosensitive drum gear 121 through a movable connection between the toner hopper 21 and the waste toner hopper 11. By allowing the developing roller gear 221, the first idler wheel 31, and the photosensitive drum gear 121 to be detachably meshed, the cleaning of the photosensitive drum 12 becomes more convenient, while also reducing the load and energy consumption of the drive mechanism of the electrophotographic imaging equipment during the cleaning process of the photosensitive drum 12.

[0042] By designing the linkage mechanism of the transmission wheel set 3, the transmission chains between the photosensitive drum gear 121 and the developing roller gear 221, and between the photosensitive drum gear 121 and the transmission wheel set 3 and the stirring rack gear 231, are connected in parallel for power transmission. When the photosensitive drum gear 121 synchronously transmits driving force, the transmission torque is reduced, effectively solving the problem of excessive transmission torque in traditional series power transmission, and making the transmission of toner in the toner cartridge 21 (mainly to the developing roller 22) smoother. In addition, this design can also effectively avoid damage to the photosensitive drum gear 121, drive head 4, etc. due to excessive transmission torque, which is beneficial to extending the service life of the integrated toner cartridge 100 and the electrophotographic imaging equipment. Furthermore, since the number of transmission stages on a single transmission chain is reduced, the transmission efficiency can be effectively improved and energy loss can be reduced.

[0043] Furthermore, using two idler gears connected between the photosensitive drum gear 121 and the stirring frame gear 231 avoids the problem of the size of the stirring frame gear 231 that exists when only one idler gear is used to connect the photosensitive drum gear 121 and the stirring frame gear 231. This avoids the problem of excessive space occupation of the internal space of the electrophotographic imaging device due to the stirring frame gear 231 being too large, and also eliminates the need for a specially designed space and / or structure to avoid the stirring frame gear 231 in the electrophotographic imaging device, simplifying the structure of the electrophotographic imaging device. Moreover, it can also reduce the bending stress of the teeth of each gear [such as the photosensitive drum gear 121, the stirring frame gear 231, and the idler gear (when there is only one)], avoiding overload of the teeth of each gear and excessive single-stage transmission ratio, ensuring lubrication reliability and transmission stability.

[0044] In addition, based on the above design, the developing roller gear 221 is preferably a single-layer gear. Since the developing roller gear 221 does not need to participate in other subsequent transmission stages, by designing the developing roller gear 221 as a single-layer gear, the space occupied by the developing roller gear 221 can be effectively reduced, which is conducive to increasing the capacity of the powder hopper 21, and also simplifies the structure of the developing roller gear 221 and the powder hopper 21.

[0045] In this embodiment, the first idler wheel 31 has a first tooth 311 and a second tooth 312. The first tooth 311 meshes with the photosensitive drum gear 121, and the first pitch circle diameter of the first tooth 311 is smaller than the fifth pitch circle diameter of the photosensitive drum gear 121. This design can prevent the first idler wheel 31 from excessively occupying the internal space of the integrated toner cartridge 100. Since the transmission wheel set 3 has two idler wheels, the rotation speed of the stirring frame 23 can be adjusted through the structural design of the two idler wheels, thereby ensuring that the rotation speed of the stirring frame 23 matches the rotation speed of the photosensitive drum 12 and the rotation speed of the developing roller 22 to ensure imaging quality. The second pitch circle diameter of the second tooth 312 is smaller than the first pitch circle diameter of the first tooth 311.

[0046] The second idler wheel 32 has a third tooth 321 and a fourth tooth 322. The third tooth 321 meshes with the second tooth 312, and the third pitch circle diameter of the third tooth 321 is larger than the second pitch circle diameter of the second tooth 312. The fourth pitch circle diameter of the fourth tooth 322 is smaller than the third pitch circle diameter of the third tooth 321. The fourth tooth 322 meshes with the stirring frame gear 231, and the fourth pitch circle diameter of the fourth tooth 322 is smaller than the sixth pitch circle diameter of the stirring frame gear 231, thereby effectively balancing the speed-increasing transmission between the first idler wheel 31 and the photosensitive drum gear 121.

[0047] Compared to using a single idler gear to connect the photosensitive drum gear 121 and the stirring frame gear 231, this invention achieves independent transmission ratio control and optimizes the transmission ratio design by designing the first idler gear 31 and the second idler gear 32. Simultaneously, it achieves load diversion between the first idler gear 31 and the second idler gear 32 to reduce tooth surface contact stress. Furthermore, the first idler gear 31 and the second idler gear 32 adopt a double-gear structure. Compared to replacing the first idler gear 31 with two coaxially distributed gears and the second idler gear 32 with two coaxially distributed gears, this design can better reduce the space occupied by the transmission gear set 3, thereby ensuring the capacity of the powder hopper 21.

[0048] Specifically, the third pitch circle diameter of the third tooth 321 is preferably 1.2 to 2 times the second pitch circle diameter of the second tooth 312; the sixth pitch circle diameter of the stirring frame gear 231 is preferably 1.8 to 2.5 times the fourth pitch circle diameter of the fourth tooth 322; the first pitch circle diameter of the first tooth 311 is preferably 1.01 to 1.2 times the second pitch circle diameter; and the fifth pitch circle diameter of the photosensitive drum gear 121 is preferably 1.5 to 2.5 times the pitch circle diameter of the first tooth 311. This design ensures that the rotation speed of the stirring frame 23 and the stirring effect on the toner in the powder hopper 21 meet the usage requirements, while also guaranteeing transmission efficiency and dynamic stability. In addition, the photosensitive drum gear 121, the developing roller gear 221, the stirring rack gear 231, the first idler gear 31 and the second idler gear 32 are preferably helical gears to improve the smoothness of the transmission, and make each gear have a stronger load-bearing capacity and a higher transmission effect. At the same time, they can also adapt to high-speed heavy-load transmission environments to ensure that the stirring rack 23 and the developing roller 22 can meet the usage requirements.

[0049] In summary, the design of the integrated toner cartridge 100 enables parallel power transmission between the photosensitive drum gear 121 and the developing roller gear 221, and between the photosensitive drum gear 121 and the transmission wheel set 3 and the stirring rack gear 231. This reduces transmission torque when the photosensitive drum gear 121 synchronously transmits driving force, effectively solving the problem of excessive transmission torque inherent in traditional series power transmission. This avoids damage to the toner cartridge and electrophotographic imaging equipment caused by excessive transmission torque, extending their service life. It also allows for smoother toner transfer within the toner hopper 21. Furthermore, the parallel power transmission reduces the space occupied by the gear sets (including the photosensitive drum gear 121, developing roller gear 221, stirring rack gear 231, and transmission wheel set 3), helping to increase the capacity of the toner hopper 21 and improving transmission efficiency while reducing energy loss.

[0050] Second embodiment of integrated toner cartridge

[0051] Reference Figure 5 and Figure 6 The difference between this embodiment and the first embodiment of the integrated toner cartridge lies in the structure of the first idler wheel 51 and the second idler wheel 52. Specifically, in this embodiment:

[0052] Both the first idler wheel 51 and the second idler wheel 52 are single-layer gears. This design ensures that the rotation of the mixing rack 23 meets the requirements, while simplifying the structure of the first idler wheel 51 and the second idler wheel 52. It also reduces the space required by the first idler wheel 51 and the second idler wheel 52, which is conducive to increasing the powder hopper capacity.

[0053] The pitch circle diameter of the first idler wheel 51 is smaller than that of the photosensitive drum gear 121, and the pitch circle diameter of the first idler wheel 51 is equal to that of the second idler wheel 52. Through this design, the transmission ratio between the photosensitive drum gear 121, the transmission wheel set 5, and the stirring frame gear 231 can be equivalent to the transmission ratio between the photosensitive drum gear 121, the first idler wheel 51 (or the second idler wheel 52), and the stirring frame gear 231. This reduces the diameter of the stirring frame gear 231, preventing it from excessively occupying space within the electrophotographic imaging device, and avoids the need for specially designed clearance and / or clearance structures within the electrophotographic imaging device, simplifying its structure. Simultaneously, it reduces the bending stress on the teeth of each gear, preventing overload operation. The pitch circle diameter of the stirring rack gear 231 is preferably 1.8 to 2.5 times that of the pitch circle diameter of the second idler gear 52; the pitch circle diameter of the photosensitive drum gear 121 is preferably 1.5 to 2.5 times that of the pitch circle diameter of the first idler gear 51.

[0054] Example of an electrophotographic imaging device

[0055] An embodiment of an electrophotographic imaging device includes a body, a drive mechanism, and an integrated toner cartridge. The integrated toner cartridge is the type described in the first or second embodiment above. The body has a cartridge mounting cavity, the drive mechanism is mounted within the body, and the drive head of the drive mechanism extends into the cartridge mounting cavity. The protruding end of the drive head has a connecting recess within the cartridge mounting cavity, and the connecting recess of the drive head engages with the connecting protrusion of the photosensitive drum gear. By using the aforementioned integrated toner cartridge, the electrophotographic imaging device can extend its lifespan.

[0056] Finally, it should be emphasized that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An integrated toner cartridge, comprising: an image forming unit, the image forming unit comprising a waste toner bin and a photosensitive drum, the photosensitive drum being rotatably mounted on the waste toner bin, an end of the photosensitive drum being provided with a photosensitive drum gear, the photosensitive drum gear being formed with a coupling protrusion at an end away from a drum body of the photosensitive drum; a developing unit, the developing unit comprising a toner bin, a developing roller and a stirring frame, the developing roller being rotatably mounted on the toner bin, an end of the developing roller being provided with a developing roller gear, the developing roller gear being engaged with the photosensitive drum gear, the stirring frame being rotatably mounted on the toner bin, an end of the stirring frame being provided with a stirring frame gear; characterized in that the integrated toner cartridge further comprises a transmission wheel set, the transmission wheel set comprising: a first idler wheel, the first idler wheel being engaged with the photosensitive drum gear; a second idler wheel, the second idler wheel being engaged between the first idler wheel and the stirring frame gear. 2.The integrated toner cartridge according to claim 1, characterized in that: the first idler wheel has a first tooth portion and a second tooth portion, the first tooth portion being engaged with the photosensitive drum gear, a first pitch circle diameter of the first tooth portion being smaller than a fifth pitch circle diameter of the photosensitive drum gear, a second pitch circle diameter of the second tooth portion being smaller than the first pitch circle diameter; the second idler wheel has a third tooth portion and a fourth tooth portion, the third tooth portion being engaged with the second tooth portion, a third pitch circle diameter of the third tooth portion being larger than the second pitch circle diameter, a fourth pitch circle diameter of the fourth tooth portion being smaller than the third pitch circle diameter, the fourth tooth portion being engaged with the stirring frame gear, the fourth pitch circle diameter being smaller than a sixth pitch circle diameter of the stirring frame gear. 3.The integrated toner cartridge according to claim 2, characterized in that: the third pitch circle diameter is 1.2 times to 2 times of the second pitch circle diameter; the sixth pitch circle diameter is 1.8 times to 2.5 times of the fourth pitch circle diameter. 4.The integrated toner cartridge according to claim 1, characterized in that: the first idler wheel and the second idler wheel are single-layer gears. 5.The integrated toner cartridge according to claim 4, characterized in that: a pitch circle diameter of the first idler wheel is smaller than a pitch circle diameter of the photosensitive drum gear, and the pitch circle diameter of the first idler wheel is equal to a pitch circle diameter of the second idler wheel, a pitch circle diameter of the stirring frame gear being 1.8 times to 2.5 times of the pitch circle diameter of the second idler wheel. 6.The integrated toner cartridge according to claim 1, characterized in that: the developing roller gear is a single-layer gear. 7.The integrated toner cartridge according to claim 1, characterized in that: the photosensitive drum gear, the developing roller gear, the stirring frame gear, the first idler wheel and the second idler wheel are helical gears. 8.The integrated toner cartridge according to any one of claims 1 to 7, characterized in that: the waste toner bin is movably connected with the toner bin, the developing roller gear and the first idler wheel are disengageably engaged with the photosensitive drum gear. 9.The integrated toner cartridge according to claim 8, characterized in that: The imaging unit further comprises a charging roller and a cleaning blade, both of which are installed on the waste powder bin, and the blade of the charging roller and the cleaning blade are in contact with the photosensitive drum, and the cleaning blade is located at the upstream end of the charging roller in the rotation direction of the photosensitive drum. The developing unit further comprises a powder outlet blade, which is installed on the powder bin, and the blade of the powder outlet blade is in contact with the developing roller.

10. An electrophotographic image forming apparatus comprising a main body having a cartridge mounting cavity and a drive mechanism installed in the main body, a drive head of the drive mechanism extending into the cartridge mounting cavity, and an extension end of the drive head having a coupling recess, characterized in that: The cartridge mounting cavity is installed with the integrated toner cartridge according to any one of claims 1 to 9, and the coupling recess is connected with the coupling convex portion.

Images