Processing box

Abstract

The utility model discloses a processing box which is detachably arranged on an image forming device and comprises a drum unit connected with a developing unit, the drum unit comprises a photosensitive frame and a photosensitive drum, and the photosensitive frame rotatably supports the photosensitive drum; the photosensitive frame is provided with electrodes for receiving electric power output by the image forming device; the conductive part is mounted in the photosensitive frame, and the conductive part abuts against and is electrically connected with the outer surface of the photosensitive drum; the photosensitive drum abuts against the conductive part to form at least two abutting contact positions, and the electrodes are electrically connected with the conductive part to transmit electric power to the photosensitive drum. According to the invention, models with different charging performance requirements can be met, the number of the charging rollers can be reduced, the cost is reduced by adopting the single charging roller made of a lower-cost material, the charging roller can be assisted or replaced to charge the photosensitive drum, and the charging roller is omitted to reduce the cost.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic imaging, and particularly relates to a processing cartridge. Background Art

[0002] The processing cartridge is an important component of an image forming apparatus such as a printer. Generally, the processing cartridge has a drum unit and a developing unit. The drum unit includes a photosensitive drum for forming an electrostatic latent image on its surface, a charging roller for charging the surface of the photosensitive drum, a waste toner blade for removing residual waste toner on the surface of the photosensitive drum, a photosensitive drum electrode for supplying power to the photosensitive drum, a charging electrode for supplying power to the charging roller. The developing unit includes a developing roller for uniformly conveying a developer to the surface of the photosensitive drum, a developing electrode for supplying power to the developing roller, and the like.

[0003] Different printer models have different charging requirements. Some models have higher requirements for charging performance. To ensure that the photosensitive drum can stably receive charging, two charging rollers are provided in the drum unit for charging, resulting in a high cost of the processing cartridge. For models with low charging requirements, a single charging roller can be used for charging. However, when the charging roller fails, the photosensitive drum will have a charging obstacle, and there is no other auxiliary component for temporary conduction, which affects the electrostatic latent image of the processing cartridge. Summary of the Utility Model

[0004] The processing cartridge of the utility model can effectively solve the problem that the drum unit in the existing processing cartridge is not conducive to meeting the different charging requirements of different printer models.

[0005] According to one aspect of the utility model, a processing cartridge is provided, which is detachably installed in an image forming apparatus and includes:

[0006] A developing unit, including a developing frame and a developing roller, the developing frame rotatably supports the developing roller;

[0007] A drum unit, connected to the developing unit, the drum unit includes a photosensitive frame and a photosensitive drum, the photosensitive frame rotatably supports the photosensitive drum, and the photosensitive drum abuts against the developing roller; the photosensitive frame is provided with a charging electrode for receiving the power output by the image forming apparatus;

[0008] A conductive component, installed in the photosensitive frame, the conductive component abuts against and is electrically connected to the outer surface of the photosensitive drum;

[0009] The photosensitive drum and the conductive component abut against each other to form at least two abutting positions, and the power is transmitted to the photosensitive drum through the electrical connection between the charging electrode and the conductive component.

[0010] In some embodiments, the conductive component includes a charging roller and a conductive member. The charging roller and the conductive member are in electrical contact with the charging electrode. The charging roller abuts against the photosensitive drum to form the first abutting position, and the conductive member abuts against the photosensitive drum to form the second abutting position. Thus, the conductive member and the charging roller can charge the photosensitive drum simultaneously. The charging roller can use inexpensive conductive materials to save costs.

[0011] In some embodiments, in the rotation direction of the photosensitive drum, the charging roller is located on the downstream side of the conductive member.

[0012] In some embodiments, the charging roller includes a charging roller shaft and a conductive sponge disposed on the charging roller shaft. The conductive sponge is electrically connected to the photosensitive drum.

[0013] In some embodiments, the conductive member is provided with a metal sheet. The charging electrode abuts against the metal sheet, and the conductive member is electrically connected to the charging electrode through the metal sheet. Thus, the metal sheet enables the conductive member to be charged more evenly.

[0014] In some embodiments, the conductive component includes a conductive member and a conductive sub-member. The charging electrode transmits power to the conductive sub-member through the conductive member. The conductive sub-member abuts against the photosensitive drum to form the first abutting position, and the conductive member abuts against the photosensitive drum to form the second abutting position. Thus, another embodiment of the conductive component is provided, and the charging roller can be cancelled to save costs.

[0015] In some embodiments, the conductive member and the conductive sub-member form a bifurcated structure on the photosensitive drum. The power transmitted by the charging electrode is bifurcated and transmitted to the photosensitive drum through the conductive member and the conductive sub-member. Thus, the conductive component can generate shunt when transmitting power, so as to form multiple contact points with the photosensitive drum.

[0016] In some embodiments, the conductive sub-member and the conductive member adopt a split structure, and the conductive sub-member is disposed on the conductive member to form contact conduction. Thus, the conductive sub-member and the conductive member are two separate components, and the conductive sub-member can use materials such as conductive rubber and conductive plastic to save costs.

[0017] In some embodiments, the conductive sub-member is mounted on the photosensitive frame, and the conductive sub-member is in electrical contact with the conductive member. Thus, another embodiment of the conductive sub-member is provided, which can be mounted on the photosensitive frame and can conduct electricity through the charging electrode.

[0018] In some embodiments, the conductive component and the conductive member adopt an integrally formed structure, and the conductive component extends outward on the conductive member to abut against the photosensitive drum. Thus, the conductive component, as a separate component, can form multiple contact points with the photosensitive drum.

[0019] In some embodiments, the photosensitive frame has a rigid frame, and the conductive member is connected to the rigid frame to support the conductive member. The charging electrode abuts against the rigid frame, so that the charging electrode is electrically connected to the conductive member. Thus, the rigid frame is used to support the conductive member and can also serve as an intermediate component for transmitting electric power.

[0020] In some embodiments, the conductive member is configured as a waste toner blade for removing residual waste toner on the surface of the photosensitive drum. Thus, the conductive member simultaneously functions to remove waste toner from the photosensitive drum and charge the unexposed photosensitive drum.

[0021] In some embodiments, the range of the electrode voltage is 600V - 1300V.

[0022] In some embodiments, the resistance range of the conductive member is 104 - 1011Ω.

[0023] The processing cartridge of the present utility model has the following beneficial effects compared with the prior art:

[0024] In the photosensitive frame of the present application, a conductive component is provided for transmitting the electric power of the image forming apparatus. The conductive component is in surface contact electrical connection with the photosensitive drum, and at least two abutting contact positions can be formed when the conductive component contacts the photosensitive drum. Therefore, when transmitting electric power, the conductive component forms a more effective contact, which can meet the requirements of different models for charging performance, can also reduce the number of charging rollers used, and use a single charging roller made of a cheaper material to reduce costs. It can also assist or replace the charging roller to charge the photosensitive drum, and cancel the charging roller to reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of the processing cartridge of the present utility model;

[0026] Figure 2 is a disassembled structural diagram of the processing cartridge of the present utility model;

[0027] Figure 3 is a cross-sectional view of the developing unit in the present utility model;

[0028] Figure 4 is a schematic structural diagram of the processing cartridge of the present utility model from another angle;

[0029] Figure 5 is a partial schematic diagram of the driving assembly of the developing unit in the present utility model;

[0030] Figure 6 It is a schematic structural diagram of the drum unit in the present utility model;

[0031] Figure 7 It is a three-dimensional cross-sectional schematic diagram of the drum unit in the present utility model;

[0032] Figure 8 It is a schematic diagram of another embodiment of the charging electrode of the drum unit in the present utility model;

[0033] Figure 9 It is a schematic diagram of the conductive member with a metal sheet in the present utility model;

[0034] Figure 10 It is a cross-sectional view of the drum unit in the present utility model;

[0035] Figure 11 It is a schematic diagram of the integrally formed design of the conductive component in the present utility model;

[0036] Figure 12 It is a schematic diagram of the split structure of the conductive component in the present utility model.

[0037] In the figure: 1 - developing unit, 11 - developing frame, 111 - handle, 112 - developing blade, 113 - powder bin, 12 - developing roller, 13 - powder feeding roller, 14 - stirring frame, 15 - developing electrode, 161 - developing gear, 162 - powder feeding gear, 163 - stirring gear, 171 - first small idler gear, 172 - first large idler gear, 173 - second small idler gear, 174 - second large idler gear, 2 - drum unit, 21 - photosensitive frame, 211 - waste powder bin, 22 - drive head, 23 - charging electrode, 24 - photosensitive drum, 241 - photosensitive gear, 25 - charging roller, 3 - first end cap, 4 - second end cap, 5 - conductive member, 212 - steel frame, 51 - metal sheet, 52 - conductive sub-member, a - abutting contact position. Specific embodiments

[0038] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0039] It should be noted that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0040] The present utility model relates to a processing cartridge detachably installed in an image forming apparatus such as an electrophotographic copying machine, an electrophotographic printer (LED printer, laser printer, etc.), a facsimile machine of the electrophotographic printer type, etc.

[0041] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0042] Embodiment 1

[0043] Figure 1 Figure 100 schematically shows a processing cartridge according to an embodiment of the present utility model. As Figure 1 、 Figure 2 shown, for convenience of description, the length direction of the processing cartridge 100 is taken as the X-axis direction, the width direction of the processing cartridge 100 is taken as the Y-axis direction, and the height direction of the processing cartridge 100 is taken as the Z-axis direction. The three axes are mutually orthogonal. The processing cartridge 100 includes a developing unit 1, a drum unit 2, and a conductive member.

[0044] As Figure 3 、 Figure 4 shown, the developing unit 1 includes a developing frame 11, a developing roller 12, a powder feeding roller 13, a stirring frame 14, a developing electrode 15, and a driving assembly. The developing frame 11 is generally in a rectangular frame structure and has a hollow powder bin 113 inside for storing toner. A handle 111 is provided on the -Y-axis side of the developing frame 11 to facilitate user operation by hand. The developing roller 12 and the powder feeding roller 13 are rotatably supported on both sides of the X-axis of the developing frame 11. The axial directions of the developing roller 12 and the powder feeding roller 13 are parallel to the X-axis direction. The powder feeding roller 13 is closer to the opening of the powder bin and is used to output toner to the developing roller 12. A developing blade 112 is also provided on the developing frame 11 for scraping off excess toner on the developing roller 12. The stirring frame 14 is rotatably arranged in the powder bin for stirring the toner to prevent the toner from caking. The developing electrode 15 is located on the -X-axis side of the developing frame 11 for receiving power from the image forming apparatus. The developing roller 12 is in contact with the developing electrode 15 to achieve electrical connection, thereby realizing the transfer of power to the developing roller 12. The +X-axis side of the developing unit 1 is the driving side for receiving power from the image forming apparatus, as Figure 5As shown in the figure, the driving component is arranged on the driving side of the developing unit 1. The driving component includes a developing gear 161, a powder feeding gear 162, a stirring gear 163, a first idler gear and a second idler gear. The developing gear 161 is coaxially arranged at the shaft end of the developing roller 12. The powder feeding gear 162 is coaxially arranged at the shaft end of the powder feeding roller 13. The stirring gear 163 is coaxially arranged at the shaft end of the stirring frame 14. The first idler gear and the second idler gear are rotatably arranged on the developing frame 11. The first idler gear includes a first small idler gear 171 and a first large idler gear 172. The second idler gear includes a second small idler gear 173 and a second large idler gear 174. Among them, the developing gear 161 meshes with the first large idler gear 172. The first small idler gear 171 meshes with the powder feeding gear 162 and the second large idler gear 174. The second small idler gear 173 meshes with the stirring gear 163. When the developing gear 161 is driven, it drives the first idler gear to rotate. The rotation of the first idler gear drives the powder feeding gear 162 and the second idler gear to rotate, and finally makes the stirring gear 163 rotate, so as to realize the transmission of driving force.

[0045] As Figure 2 , Figure 6 shown in the figure, the drum unit 2 is connected to the developing unit 1. The drum unit 2 includes a photosensitive frame 21, a driving head 22, a charging electrode 23, a photosensitive drum 24 and a charging roller 25. The photosensitive frame 21 is an open structure. The photosensitive frame 21 has a waste powder bin 211 for storing the excess waste powder on the surface of the photosensitive drum 24. The photosensitive drum 24 is rotatably supported on the photosensitive frame 21. The axial direction of the photosensitive drum 24 is parallel to the X-axis direction. The photosensitive drum 24 abuts against the developing roller 12. The +X-axis side of the photosensitive drum 24 has a photosensitive gear 241. The photosensitive gear 241 meshes with the developing gear 161 to drive the developing roller 12 to rotate. The driving head 22 is arranged on the +X-axis side of the drum unit 2 and is used to receive the driving force from the image forming device. The driving head 22 is coaxially arranged at the shaft end of the photosensitive drum 24 to drive the photosensitive drum 24 to rotate. The charging roller 25 is arranged in the photosensitive frame 21. Springs are arranged at both axial ends to keep the charging roller 25 in contact with the surface of the photosensitive drum 24. The charging roller 25 is used to charge the photosensitive drum 24. The charging electrode 23 is made of a conductive material. The charging electrode 23 is located on the -X-axis side (non-driving end) of the drum unit 2 and is used to receive the electric power from the image forming device. The charging roller 25 is in contact with the charging electrode 23 to achieve electrical connection, so as to transfer the electric power to the photosensitive drum 24 through the charging roller 25, thereby realizing the charging of the photosensitive drum 24. Therefore, when the driving head 22 receives the driving force, the developing roller 12 and the photosensitive drum 24 rotate relatively. The charged developing roller 12 and photosensitive drum 24 form an electrostatic latent image under the action of toner, and the printing work is realized.

[0046] In addition, as Figure 5As shown, the processing cartridge 100 further has a first end cap 3 and a second end cap 4. The first end cap 3 and the second end cap 4 cover both sides of the processing cartridge 100 in the X-axis direction. The first end cap 3 is disposed on the driving side of the processing cartridge 100 and is used to cover the driving assembly to protect the driving assembly from being interfered. The second end cap 4 is located on the non-driving side of the processing cartridge 100. Among them, the developing electrode 15 and the charging electrode 23 are mounted on the second end cap 4, and parts of the developing electrode 15 and the charging electrode 23 are exposed on the side wall of the second end cap 4 (-X-axis side) for facilitating receiving the power of the image forming apparatus.

[0047] As Figure 7 shown, the present application solves the problem that the high cost of the processing cartridge 100 is caused by the existing drum unit 2 being applicable to different models by setting a conductive member. In this embodiment, the conductive member includes a charging roller 25 and a conductive member 5. The charging roller 25 abuts against the photosensitive drum 24. The charging roller 25 receives the power of the image forming apparatus through the electrode on the photosensitive frame 21 and charges the photosensitive drum 24. The above electrode is preferably the charging electrode 23, and its voltage range is 600V - 1300V. In this embodiment, the charging roller 25 includes a charging roller shaft (not shown) and a conductive sponge disposed on the charging roller shaft. The conductive sponge is exposed on the surface of the charging roller 25 and can be electrically connected to the photosensitive drum 24. Among them, in the rotation direction of the photosensitive drum 24 ( Figure 10 clockwise), the charging roller 25 is located on the downstream side of the conductive member 5. It can be understood that the charging roller 25 is located on the -Y-axis side of the conductive member 5. The conductive member 5 can be made of a conductive material such as a conductive rubber strip or a conductive sponge. The outer shape of the conductive member 5 is a long strip structure, and it is detachably mounted in the photosensitive frame 21. The conductive member 5 abuts against the surface of the photosensitive drum 24. One end of the charging electrode 23 extends to the photosensitive frame 21 and is in contact electrical connection with the conductive member 5, so as to achieve contact conduction to transfer the power to the photosensitive drum 24.

[0048] Preferably, as Figure 8As shown, the conductive member 5 is configured as a waste toner blade for scraping the residual waste toner on the surface of the photosensitive drum 24. The surface resistance of the conductive member 5 ranges from 104 to 1011 Ω, preferably from 105 to 109 Ω. The photosensitive frame 21 has a steel frame 212, and the steel frame 212 adopts a bent plate structure, which extends along the X-axis direction and has a length adapted to that of the conductive member 5. Among them, the steel frame 212 is fixedly connected inside the photosensitive frame 21, and the conductive member 5 is connected to the steel frame 212, that is, the conductive member 5 is supported by the steel frame 212 so as to be able to continuously abut against the photosensitive drum 24. Therefore, while scraping the waste toner, the conductive member 5 can also conduct electricity by contacting the photosensitive drum 24. The steel frame 212 is also made of a conductive material, such as a conductive metal, etc. At this time, one end of the charging electrode 23 can be directly abutted against the steel frame 212 to achieve contact conduction, that is, the power of the image forming device is transmitted to the photosensitive drum 24 in sequence through the charging electrode 23, the steel frame 212, and the conductive member 5. Of course, the charging electrode 23 can also be directly abutted against the conductive member 5.

[0049] In other embodiments, as Figure 9 shown, a metal sheet 51 with a lower resistance is provided on the surface of the conductive member 5. The metal sheet 51 can directly conduct electricity by contacting the conductive member 5. The metal sheet 51 covers part or all of the surface of the conductive member 5. At this time, the steel frame 212 has a supporting effect on the conductive member 5. One end of the charging electrode 23 is directly abutted against the metal sheet 51 to conduct electricity in contact, so as to realize electrical connection to the conductive member 5, thereby transmitting power to the photosensitive drum 24. Due to the conductive function of the metal sheet 51 on the conductive member 5, the conductive member 5 can be charged more evenly, and it can be more stable when transmitting power to the photosensitive drum 24, and it is not easy to occur the situation of conductive dispersion, so as to enhance the conductive performance of the conductive member 5.

[0050] It can be known that, as Figure 10 shown, at least two abutting contact positions a are formed by the abutting contact between the photosensitive drum 24 and the conductive member. In this embodiment, taking two abutting contact positions a as an example, the charging roller 25 abuts against the photosensitive drum 24 to form the first abutting contact position a, and the conductive member 5 abuts against the photosensitive drum 24 to form the second abutting contact position a. The increase of the abutting contact position a can be realized by adding the conductive member 5. The abutting contact position a is actually a way of contacting the photosensitive drum 24. In actual work, due to the shape relationship of the contact between the two, both the abutting contact between the charging roller 25 and the photosensitive drum 24 and the abutting contact between the conductive member 5 and the photosensitive drum 24 conduct electricity by forming a line contact, and have multiple point contacts with the photosensitive drum 24. When observed in cross-section, it conducts electricity by point contact.

[0051] Therefore, the charging electrode 23 transfers electric power to the photosensitive drum 24 through the charging roller 25 and the conductive member 5, avoiding the need to provide two or more charging rollers 25 for conduction. When the conductive member 5 can provide sufficient charging performance, the charging roller 25 can be eliminated. Even if the charging roller 25 cannot perform normal charging work, the conductive member 5 can still play an auxiliary charging role, or a charging roller 25 made of cheaper materials, such as a conductive sponge PCR, etc., can be used, all of which can reduce costs.

[0052] Embodiment 2

[0053] Most of the structures of this embodiment are the same as those of Embodiment 1. The difference lies in the construction method of the conductive component, and in this embodiment, the charging of the charging drum can be omitted, and the photosensitive drum 24 can be charged directly through the conduction of the conductive component.

[0054] As Figure 11 、 Figure 12 shown, in this embodiment, the conductive component includes a conductive member 5 and a conductive sub-member 52. Both the conductive member 5 and the conductive sub-member 52 are made of the same conductive material as above, and both the conductive member 5 and the conductive sub-member 52 are in contact with the surface of the photosensitive drum 24 to conduct electricity. The structure of the conductive member 5 is the same as that of Embodiment 1. Of course, the conductive member 5 can be configured as a waste toner blade for scraping the residual waste toner on the photosensitive drum 24. The conductive sub-member 52 can be a member extending on the conductive member 5, and the conductive sub-member 52 conducts electricity through the conductive member 5. Two implementation structures of the conductive member 5 and the conductive sub-member 52 are provided, namely an integral structure and a split structure.

[0055] As Figure 11 shown, the conductive member 5 and the conductive sub-member 52 are integrally formed, that is, the conductive component is a separate member, and the conductive sub-member 52 is the part extending on the conductive member 5. The conductive sub-member 52 has the same length as the conductive member 5, and the conductive sub-member 52 forms a bifurcated structure on the conductive member 5. When observed in cross-section, the conductive member 5 and the conductive sub-member 52 form a "person" - shaped structure. Similarly, the conductive member 5 is connected to the steel frame 212 to support the conductive member 5, and the charging electrode 23 abuts against the steel frame 212. During actual charging, after the charging electrode 23 receives the electric power from the image forming device, the electric power is sequentially transferred from the charging electrode 23, the steel frame 212, the conductive member 5 or the conductive sub-member 52 to the photosensitive drum 24. It can be seen that the conductive member 5 and the conductive sub-member 52 are bifurcated and integrally formed, increasing the contact points with the photosensitive drum 24 and enhancing the charging efficiency.

[0056] As Figure 12As shown, the conductive member 5 and the conductive sub-member 52 adopt a split structure, which has the same shape as the integral structure. The difference is that the conductive component is split into two components, namely the conductive member 5 and the conductive sub-member 52. At this time, the conductive sub-member 52 is connected to the conductive member 5, and can be fixedly connected or detachably connected (snap-connected). The charging electrode 23 can transfer electric power to the steel frame 212 and then to the conductive sub-member 52 through the conductive member 5. The conductive sub-member 52 can be made of materials such as conductive rubber or conductive plastic to save costs.

[0057] For the above conductive components with either integral or split structures, the charging electrode 23 can contact the steel frame 212 for conduction, and then transfer the electric power to the conductive member 5 and the conductive sub-member 52 through the steel frame 212. The charging electrode 23 can also directly contact the conductive member 5 or the conductive sub-member 52 for conduction to charge the photosensitive drum 24. The steel frame 212 can play a supporting role.

[0058] In other embodiments, the conductive sub-member 52 can also be installed in the photosensitive frame 21. For example, both sides of the X-axis of the conductive sub-member 52 are connected inside the photosensitive frame 21, and the conductive sub-member 52 contacts the charging electrode 23 for conduction, so that the charging electrode 23 can transfer the electric power to the photosensitive drum 24 through the conductive member 5 and the conductive sub-member 52.

[0059] It can be seen that in this embodiment, two abutting contact positions a can still be formed on the surface of the conductive component and the photosensitive drum 24. That is, the conductive member 5 abuts against the photosensitive drum 24 to form the first abutting contact position a, and the conductive sub-member 52 abuts against the photosensitive drum 24 to form the second abutting contact position a. The addition of the abutting contact position a can be achieved by adding the conductive sub-member 52. Similarly, the conductive member 5, the conductive sub-member 52 and the photosensitive drum 24 have multiple contact points to enhance the charging efficiency. When it is applied to models with low charging requirements, it can assist or replace the charging roller 25 to charge the photosensitive drum 24, so as to cancel the charging roller 25 and reduce costs.

[0060] The above is only a preferred embodiment of the present invention. For the sake of concise description, not all possible combinations of the various technical features in the above embodiments are described. It is not a limitation to the present invention in any form. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A processing cartridge detachably mounted in an image forming apparatus, characterized in that, Comprising: A drum unit, the drum unit includes a photosensitive frame and a photosensitive drum, the photosensitive frame rotatably supports the photosensitive drum; the photosensitive frame is provided with an electrode for receiving the power output by the image forming apparatus; A conductive member, installed within the photosensitive frame, the conductive member is in abutting contact and electrically connected to the outer surface of the photosensitive drum; The photosensitive drum and the conductive member form at least two abutting contact positions in abutting contact, and the power is transmitted to the photosensitive drum through electrical connection between the electrode and the conductive member.

2. The processing cartridge according to claim 1, wherein, The conductive member includes a charging roller and a conductive member, the charging roller and the conductive member are in contact electrical connection with the electrode, the charging roller is in abutting contact with the photosensitive drum to form the first abutting contact position, and the conductive member is in abutting contact with the photosensitive drum to form the second abutting contact position.

3. The processing cartridge according to claim 2, wherein In the rotation direction of the photosensitive drum, the charging roller is located on the downstream side of the conductive member.

4. The processing cartridge according to claim 2, characterized in that, The charging roller includes a charging roller shaft and a conductive sponge provided on the charging roller shaft, and the conductive sponge is electrically connected to the photosensitive drum.

5. The processing cartridge according to claim 2, wherein The conductive member is provided with a metal sheet, the electrode abuts against the metal sheet, and the conductive member is electrically connected to the electrode through the metal sheet.

6. The processing cartridge according to claim 1, wherein The conductive member includes a conductive member and a conductive sub-member, the electrode transmits power to the conductive sub-member through the conductive member, the conductive sub-member is in abutting contact with the photosensitive drum to form the first abutting contact position, and the conductive member is in abutting contact with the photosensitive drum to form the second abutting contact position.

7. The processing cartridge according to claim 6, wherein, The conductive member and the conductive sub-member form a bifurcated structure on the photosensitive drum, and the power transmitted by the electrode is bifurcated and transmitted to the photosensitive drum through the conductive member and the conductive sub-member.

8. The processing cartridge according to claim 7, wherein, The conductive sub-member and the conductive member adopt a split structure, and the conductive sub-member is arranged on the conductive member to form contact conduction.

9. The processing cartridge according to claim 8, wherein, The conductive sub-member is installed on the photosensitive frame, and the conductive sub-member is in contact electrical connection with the conductive member.

10. The processing cartridge according to claim 7, wherein The conductive sub-member and the conductive member adopt an integrally formed structure, and the conductive sub-member extends outward on the conductive member to abut against the photosensitive drum.

11. The processing cartridge according to any one of claims 2-10, characterized in that, The photosensitive frame has a rigid frame, the conductive member is connected to the rigid frame to support the conductive member, and the electrode abuts against the rigid frame, so that the electrode is electrically connected to the conductive member.

12. The processing cartridge according to claim 11, wherein, The conductive member is configured as a waste toner blade for removing residual waste toner on the surface of the photosensitive drum.

13. The processing cartridge according to claim 11, wherein, The range of the electrode voltage is between 600V and 1300V.

14. The processing cartridge according to claim 11, wherein The resistance range of the conductive member is between 104 and 1011Ω.

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