Processing box

Abstract

The embodiment of the utility model provides a processing box which comprises a photosensitive unit, and the photosensitive unit comprises a photosensitive drum, a charging roller, a brush and a blocking piece. The charging roller is in contact with the surface layer of the photosensitive drum. The brush makes contact with the surface layer of the charging roller, at least one side of the brush is provided with the blocking piece, and the blocking piece extends in the axial direction of the charging roller. The processing box provided by the embodiment of the utility model has relatively good cleanliness.

Description

Technical Field

[0001] This application relates to the field of electrophotographic imaging technology, and in particular to a processing box. Background Technology

[0002] The printer's processing cartridge includes a developing unit and a photosensitive unit. In related technologies, some toner particles inside the brush may drift to other areas of the processing cartridge, causing it to gradually become dirty and unclean over long-term use. Utility Model Content

[0003] In view of this, the main objective of the embodiments of this application is to provide a processing box with better cleanliness.

[0004] To achieve the above objectives, the technical solution of this application embodiment is implemented as follows:

[0005] This application embodiment provides a processing box, the processing box including a photosensitive unit, the photosensitive unit including:

[0006] Photosensitive drum;

[0007] A charging roller that contacts the surface of the photosensitive drum;

[0008] A brush that contacts the surface of the charging roller;

[0009] A baffle is provided on at least one side of the brush, and the baffle extends along the axial direction of the charging roller.

[0010] In one embodiment, the photosensitive unit further includes a conductive component having an electrical contact surface for electrical connection with an imaging device, the electrodes of the charging roller being electrically connected to the conductive component, and the brush being electrically connected to the conductive component.

[0011] In one embodiment, the photosensitive unit includes a housing assembly, the charging roller, the brush, and the photosensitive drum are disposed on the housing assembly, and along a first direction, opposite sides of the brush are respectively connected to the housing assembly and the charging roller, and at least a portion of the baffle extends to one side of the brush along a second direction, wherein the second direction is perpendicular to the first direction and the axial direction of the charging roller.

[0012] In one embodiment, the photosensitive unit includes a housing assembly and a chip. The photosensitive drum has a driving force receiving portion at one end along the axial direction. The chip has an electrical connection surface. The photosensitive drum, the charging roller, the brush, the baffle, the conductive component, and the chip are disposed on the housing assembly. The electrical contact surface and the electrical connection surface are exposed on the top surface of the housing assembly. Along the axial direction of the photosensitive drum, the electrical contact surface is located on the side of the electrical connection surface closer to the driving force receiving portion.

[0013] In one embodiment, the thickness of the baffle is greater than or equal to 0.05 mm and less than or equal to 2 mm.

[0014] In one embodiment, along the axial direction of the charging roller, the extension length of the baffle is greater than or equal to the extension length of the brush; and / or,

[0015] The baffle is made of PET material.

[0016] In one embodiment, the housing assembly includes a first wall, the brush is disposed on the side of the first wall away from the charging roller, and the baffle is attached to the side of the first wall along the second direction and extends toward the charging roller.

[0017] In one embodiment, the baffle and the first wall are bonded or welded together.

[0018] In one embodiment, the brush includes an elastic layer, a fixing layer, and a cleaning layer. The cleaning layer is disposed on the side of the fixing layer near the charging roller and is in contact with the surface of the charging roller. The elastic layer is disposed on the side of the fixing layer away from the cleaning layer and is connected to the housing assembly.

[0019] In one embodiment, the processing cartridge includes a developing unit, the developing unit includes a developing roller, and the photosensitive unit includes a movable component movably disposed on the housing assembly.

[0020] The movable component switches the developing roller and the photosensitive drum between separation and contact by movement; or,

[0021] When the imaging device performs a cleaning procedure, the developing roller and the photosensitive drum come into contact, and the movable component adjusts the voltage applied to the developing roller by the imaging device to regulate the toner transfer between the developing roller and the photosensitive drum.

[0022] This application provides a processing cartridge. The photosensitive unit of the processing cartridge includes a photosensitive drum, a charging roller, a brush, and a baffle. The charging roller contacts the surface of the photosensitive drum, and the brush contacts the surface of the charging roller. By providing the brush, the toner adsorbed on the surface of the charging roller can be effectively cleaned. A baffle is provided on at least one side of the brush, and the baffle extends along the axial direction of the charging roller. Thus, the baffle can block some toner particles that have detached from the brush, reducing the phenomenon of toner particles on the brush falling into other areas of the processing cartridge. This reduces the possibility of the processing cartridge becoming dirty due to toner falling, and therefore improves the cleanliness of the processing cartridge during long-term use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a processing box according to an embodiment of this application;

[0024] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0025] Figure 3 for Figure 1 A schematic diagram of the separation of the photosensitive unit and the developing unit in the processing cartridge;

[0026] Figure 4 for Figure 3 Exploded view of the photosensitive unit;

[0027] Figure 5 This is an exploded view of a photosensitive unit according to another embodiment of this application;

[0028] Figure 6 for Figure 4 A partial structural diagram of the photosensitive unit;

[0029] Figure 7 for Figure 6 A partial structural diagram of the photosensitive unit from another perspective;

[0030] Figure 8 for Figure 7 A magnified view of a section at point B in the middle;

[0031] Figure 9 for Figure 4 A schematic diagram showing the interaction between the medium-sized brush and the conductive components;

[0032] Figure 10 for Figure 9 A magnified view of a section at point C;

[0033] Figure 11 for Figure 9 A schematic diagram of the structure of the first conductive steel sheet in the middle;

[0034] Figure 12 for Figure 9 A schematic diagram of the structure of the second conductive steel sheet in the middle;

[0035] Figure 13 for Figure 9 A schematic diagram showing the cooperation relationship between the conductive spring and the conductive support;

[0036] Figure 14 for Figure 1 A cross-sectional view of the central processing unit along the second direction;

[0037] Figure 15 for Figure 14 A magnified view of a section at point D.

[0038] Explanation of reference numerals in the attached figures

[0039] 10. Photosensitive unit; 11. Photosensitive drum; 111. Drive force receiving unit; 12. Conductive component; 12a. Electrical contact surface; 121. First conductive steel sheet; 121a. First abutment surface; 122. Second conductive steel sheet; 122a. Second abutment surface; 122b. Third abutment surface; 131. Charging roller; 132. Conductive spring; 133. Conductive support; 133a. Clamping hole; 14. Brush; 141. Elastic layer; 142. Fixing layer; 143. Cleaning layer; 15. Chip; 15a. Electrical connection surface; 16. Housing assembly; 161. First wall; 17. Movable component; 18. Baffle; 20. Developing unit; 21. Developing roller. Detailed Implementation

[0040] In this application, the "axial" orientation or positional relationship is based on the appendix. Figure 2 The orientations or positional relationships shown, "first direction" and "second direction" are based on the attached... Figure 15 The orientation or positional relationship shown is for illustrative purposes only and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0041] In the description of the embodiments of this application, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0042] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0043] One embodiment of this application provides a processing box, which includes a photosensitive unit 10. Please refer to [link to relevant documentation]. Figure 4 , Figure 5 and Figure 15 The photosensitive unit 10 includes a photosensitive drum 11, a charging roller 131, a brush 14, and a baffle 18.

[0044] The charging roller 131 contacts the surface of the photosensitive drum 11.

[0045] The brush 14 contacts the surface of the charging roller 131.

[0046] At least one side of the brush 14 is provided with a baffle 18, and the baffle 18 extends along the axial direction of the charging roller 131.

[0047] Specifically, the imaging device can supply power to the charging roller 131. The imaging device can be any type of imaging device such as a printer, copier, or fax machine. The processing box includes a photosensitive unit 10 and a developing unit 20.

[0048] It should be noted that the brush 14 and the imaging device may be electrically connected or not electrically connected. For example, the imaging device may only supply power to the charging roller 131 and not to the brush 14, thus making the brush 14 uncharged. Of course, in other embodiments, the imaging device may supply power to both the charging roller 131 and the brush 14.

[0049] For example, the photosensitive unit 10 also includes a conductive component 12 having an electrical contact surface 12a for electrical connection with an imaging device. The electrodes of the charging roller 131 are electrically connected to the conductive component 12, and the brush 14 is electrically connected to the conductive component 12. In other words, by electrically connecting the brush 14, the electrodes of the charging roller 131, and the conductive component 12, the imaging device can supply power to the brush 14 via the conductive component 12 during a cleaning process. This charges the waste toner accumulated inside the brush 14, causing it to return to the surface of the charging roller 131 and transfer to the surface of the photosensitive drum 11, thus facilitating the removal of the waste toner. For example, it can be adsorbed by a transfer belt and placed into a waste toner collector. Therefore, when excessive waste toner accumulates in the brush 14, it can be transferred out of the brush 14, maintaining good cleaning ability of the brush 14.

[0050] Specifically, the conductive component 12 has good conductivity, and its electrical contact surface 12a is an electrical connection area for contacting the imaging device to form an electrical connection.

[0051] On the one hand, the conductive component 12 is electrically connected to the charging roller 131, which facilitates the imaging device to supply power to the charging roller 131 through the conductive component 12. On the other hand, the conductive component 12 is electrically connected to the brush 14, which facilitates the supply of power to the brush 14 to charge the waste toner accumulated inside the brush 14, thereby removing the waste toner from the brush 14 and greatly improving the cleaning effect of the brush 14.

[0052] For example, when there is not much waste toner accumulated on brush 14, during normal development of the processing cartridge, brush 14 can clean the surface of charging roller 131 to remove the waste toner. When a large amount of waste toner accumulates on brush 14, the imaging device supplies power to brush 14 during the cleaning procedure, causing the waste toner accumulated on brush 14 to transfer back to charging roller 131 and photosensitive drum 11, thus facilitating its removal.

[0053] It should be noted that the specific electrical connection method between the brush 14 and the conductive component 12 is not limited, as long as the conductive component 12 can conduct electricity to the brush 14.

[0054] For example, please see Figure 4 The brush 14 is in direct contact with the conductive component 12 to form an electrical connection.

[0055] For example, the brush 14 forms an electrical connection with the conductive component 12 through other conductive structures.

[0056] For example, please refer to Figure 5 The brush 14 is electrically connected to the conductive component 12 through the charging roller 131 (such as the elastic layer 141 of the charging roller 131 or electrodes).

[0057] Similarly, the electrodes of the charging roller 131 are electrically connected to the conductive component 12. This connection can be formed through direct contact or by the electrodes of the charging roller 131 contacting the conductive component 12 through other conductive structures.

[0058] The charging roller 131 contacts the surface of the photosensitive drum 11, which facilitates the application of charge to the surface of the photosensitive drum 11.

[0059] The brush 14 contacts the surface of the charging roller 131, which can brush off the waste toner from the surface of the charging roller 131, so that the surface of the charging roller 131 maintains a good cleaning effect and reduces the impact of waste toner on the developing effect.

[0060] The baffle 18 is a structure within the processing box used to prevent toner from the brush 14 from falling into other areas of the processing box. The baffle 18, brush 14, and charging roller 131 all extend in the same direction.

[0061] Depending on the actual situation, baffles 18 can be set on any one or more sides of the brush 14, and the specific setting method is determined according to the actual needs.

[0062] It should be noted that the specific dimensions, material, and shape of the baffle 18 can be determined according to the actual situation.

[0063] For example, the thickness of the baffle 18 is greater than or equal to 0.05 mm and less than or equal to 2 mm. Examples include 0.05 mm, 0.1 mm, 0.5 mm, 1 mm, 1.5 mm, or 2 mm. This allows the baffle 18 to achieve good blocking effect without being too large, thus reducing costs.

[0064] For example, along the axial direction of the charging roller 131, the extension length of the baffle 18 is greater than or equal to the extension length of the brush 14. In fact, the baffle 18 can block each area of ​​the brush 14 along the extension direction, thereby further improving the blocking effect of the baffle 18.

[0065] For example, the baffle 18 is made of PET (polyethylene terephthalate). This gives the baffle 18 high strength and toughness.

[0066] In the processing box of this embodiment, the charging roller 131 contacts the surface of the photosensitive drum 11, and the brush 14 contacts the surface of the charging roller 131. By providing the brush 14, the toner adsorbed on the surface of the charging roller 131 can be cleaned effectively. At least one side of the brush 14 is provided with a baffle 18, and the baffle 18 extends along the axial direction of the charging roller 131. Thus, the baffle 18 can block some toner particles that have detached from the brush 14, which can reduce the phenomenon of toner particles on the brush 14 falling into other areas of the processing box. This can reduce the possibility of the processing box becoming dirty due to toner falling, and thus can make the processing box cleaner during long-term use.

[0067] In one embodiment, please refer to Figures 1 to 4 The photosensitive unit 10 includes a housing assembly 16 and a chip 15. The photosensitive drum 11 has a driving force receiving portion 111 at one end along the axial direction. The chip 15 has an electrical connection surface 15a. The photosensitive drum 11, charging roller 131, brush 14, baffle 18, conductive component 12 and chip 15 are disposed on the housing assembly 16. The electrical contact surface 12a and the electrical connection surface 15a are exposed on the top surface of the housing assembly 16. Along the axial direction of the photosensitive drum 11, the electrical contact surface 12a is located on the side of the electrical connection surface 15a closer to the driving force receiving portion 111.

[0068] Specifically, the photosensitive drum 11 is mounted on the housing assembly 16. In fact, the photosensitive drum 11 is capable of rotating around an axis to perform the developing process.

[0069] The driving force receiving unit 111 of the photosensitive drum 11 is used to receive driving force from the imaging device. It should be noted that the photosensitive drum 11 includes a drum body and a driving force receiving unit 111 located at one end of the drum body. The driving force receiving unit 111 and the drum body can be an integral structure or a separate structure.

[0070] Furthermore, the driving force receiving unit 111 may only receive the driving force from the imaging device, without receiving the braking force. Of course, the driving force receiving unit 111 may also receive both the driving force and the braking force from the imaging device.

[0071] The function of the chip 15 in the photosensitive unit 10 can be determined according to the actual situation. For example, it can be used to record data such as toner balance, print coverage, and lifespan.

[0072] The electrical connection surface 15a of the chip 15 is an electrical connection area for contacting the imaging device to form an electrical connection.

[0073] The electrical contact surface 12a of the conductive component 12 and the electrical connection surface 15a of the chip 15 are both located on the top surface of the housing assembly 16, and both are oriented in the same direction and exposed to the external field of view. This facilitates the cooperation between the photosensitive unit 10 and the imaging device, enabling better electrical connection between the two.

[0074] It should be noted that the top surface of housing assembly 16 refers to the outer surface of housing assembly 16 located on the top side when the processing box is installed inside the imaging device.

[0075] In the axial direction of the photosensitive drum 11, the electrical contact surface 12a of the conductive component 12 is closer to the driving force receiving part 111 than the electrical connection surface 15a of the chip 15. This facilitates the docking of the photosensitive unit 10 with the imaging device and improves the stability of the electrical connection between the two.

[0076] In one embodiment, please refer to Figure 14 and Figure 15 The photosensitive unit 10 includes a housing assembly 16, a charging roller 131, a brush 14, and a photosensitive drum 11 disposed on the housing assembly 16. Along a first direction, opposite sides of the brush 14 are respectively in contact with the housing assembly 16 and the charging roller 131. At least a portion of the baffle 18 extends to one side of the brush 14 along a second direction, wherein the second direction is perpendicular to the first direction and the axial direction of the charging roller 131. This significantly improves the blocking effect of the baffle 18, thereby enhancing the cleanliness of the processing box.

[0077] Specifically, the brush 14 is connected to the housing assembly 16 on one side along the first direction and contacts the charging roller 131 on the other side along the first direction. Baffles 18 are respectively provided on one side or opposite sides of the brush 14 along the second direction (the direction perpendicular to the first direction and the axial direction of the charging roller 131).

[0078] It is understandable that the baffle 18 may be entirely located on one side or opposite sides of the brush 14 along the second direction, or it may only be partially located on one side or opposite sides of the brush 14 along the second direction. This reduces the risk of toner on the brush 14 drifting along the second direction.

[0079] In one embodiment, please refer to Figures 6 to 8 , Figure 15 The housing assembly 16 includes a first wall 161, with the brush 14 disposed on the side opposite to the charging roller 131 on the first wall 161, and a baffle 18 attached to the first wall 161 along a second direction and extending toward the charging roller 131. This improves the installation stability of the baffle 18.

[0080] In other words, the baffle 18 is disposed on the first wall 161 of the housing assembly 16 and extends toward the charging roller 131 to block one side of the brush 14 in the second direction.

[0081] It should be noted that the connection method between the baffle 18 and the first wall 161 is not limited.

[0082] For example, the baffle 18 is bonded to the first wall 161, thereby facilitating the assembly and disassembly of the baffle 18.

[0083] For example, the baffle 18 is welded to the first wall 161. This improves the stability of the connection between the two.

[0084] In one embodiment, please refer to Figure 4 , Figure 5 and Figure 15 The brush 14 includes an elastic layer 141, a fixing layer 142, and a cleaning layer 143. The cleaning layer 143 is disposed on the side of the fixing layer 142 near the charging roller 131 and is in contact with the surface of the charging roller 131. The elastic layer 141 is disposed on the side of the fixing layer 142 away from the cleaning layer 143 and is connected to the housing assembly 16. This improves the installation stability of the brush 14 and allows it to effectively clean the charging roller 131.

[0085] Specifically, the elastic layer 141 is a structural layer used by the brush 14 to connect with the housing assembly 16. It is made of a material with a certain degree of elasticity, which can effectively buffer the force exerted on the brush 14 during the rotation of the charging roller 131, thereby improving the connection stability between the brush 14 and the housing assembly 16. For example, the elastic layer 141 is made of sponge material.

[0086] The cleaning layer 143 is the structural layer for the brush 14 to achieve a cleaning effect. It achieves a better cleaning effect by contacting the surface of the charging roller 131.

[0087] The fixing layer 142 can connect the cleaning layer 143 and the elastic layer 141 to make the overall integrity of the brush 14 better.

[0088] The area where the brush 14 is electrically connected to the conductive component 12 can be set according to the actual situation.

[0089] For example, the fixing layer 142 is electrically connected to the conductive component 12. This achieves good conductivity without affecting the cleaning effect of the cleaning layer 143 or the connection effect of the elastic layer 141.

[0090] It should be noted that the cleaning layer 143 and the fixing layer 142 are made of materials with a certain resistance value, while the elastic layer 141 is not limited.

[0091] For example, the elastic layer 141 is made of an insulating material. This improves the power supply efficiency of the imaging device to the brush 14.

[0092] For example, the resistance of the fixing layer 142 is greater than or equal to 2 megohms and less than or equal to 500 megohms. Examples include 2 megohms, 10 megohms, 100 megohms, 200 megohms, or 500 megohms. Controlling the resistance of the fixing layer 142 within this range allows for better compatibility with imaging equipment.

[0093] For example, the resistance of the cleaning layer 143 is greater than or equal to 2 megohms and less than or equal to 500 megohms. Examples include 2 megohms, 10 megohms, 100 megohms, 200 megohms, or 500 megohms. Controlling the resistance of the cleaning layer 143 within this range allows for better compatibility with imaging equipment.

[0094] In one embodiment, the cleaning layer 143 includes bristles made of filamentous material. Specifically, the bristles have a vertical, filamentous structure. This results in a better cleaning effect.

[0095] The specific material of the bristles can be set according to the actual situation, such as nylon or rayon.

[0096] The connection method between the cleaning layer 143 and the fixing layer 142 is not limited. For example, the cleaning layer 143 may be adhered to the fixing layer 142 or woven into the fixing layer 142.

[0097] The connection method between the elastic layer 141 and the fixing layer 142 is not limited. For example, the elastic layer 141 and the fixing layer 142 are bonded together with double-sided adhesive.

[0098] In one embodiment, along the axial direction of the photosensitive drum 11, the length of the brush 14 is greater than or equal to 220 mm and less than or equal to 240 mm. For example, 220 mm, 230 mm, or 240 mm. By controlling the length of the brush 14 within the above range, the brush 14 can be better matched with the charging roller 131, and the brush 14 can be easily arranged within the housing assembly 16.

[0099] In one embodiment, along the direction of the cleaning layer 143 away from the elastic layer 141, the thickness of the cleaning layer 143 is greater than or equal to 1 mm and less than or equal to 5 mm, such as 1 mm, 3 mm, or 5 mm. By controlling the thickness of the cleaning layer 143 within the above range, the brush 14 can achieve a better cleaning effect.

[0100] In one embodiment, the width of the brush 14 is greater than or equal to 4 mm and less than or equal to 8 mm along the width direction. For example, 4 mm, 6 mm, or 8 mm. By controlling the width of the brush 14 within the above range, the brush 14 can be better matched with the charging roller 131, and the brush 14 can be easily arranged within the housing assembly 16.

[0101] In one embodiment, please refer to Figures 9 to 11 The conductive component 12 includes a first conductive steel sheet 121, the side of the first conductive steel sheet 121 facing away from the charging roller 131 having an electrical contact surface 12a, and one end of the brush 14 being electrically connected to the first conductive steel sheet 121. This allows the conductive component 12 to have good structural stability and conductivity.

[0102] It should be noted that the specific connection method between the brush 14 and the first conductive steel sheet 121 is not limited.

[0103] For example, please see Figure 9 and Figure 12 The conductive component 12 further includes a second conductive steel sheet 122. The first conductive steel sheet 121 has a first abutment surface 121a on the side near the charging roller 131, and the second conductive steel sheet 122 has a second abutment surface 122a on the side near the brush 14. The second conductive steel sheet 122 has a third abutment surface 122b on the side away from the brush 14. The second abutment surface 122a abuts against one end of the brush 14, and the third abutment surface 122b abuts against the first abutment surface 121a, so that the brush 14 is electrically connected to the first conductive steel sheet 121 through the second conductive steel sheet 122. This improves the conductivity of the conductive component 12 and ensures a stable connection between the brush 14 and the conductive component 12.

[0104] Specifically, the second conductive steel sheet 122 is disposed between the ends of the brush 14, and the opposite ends of the second conductive steel sheet 122 abut against the ends of the first conductive steel sheet 121 and the brush 14 respectively, thereby facilitating the electrical connection between the ends of the brush 14 and the first conductive steel sheet 121.

[0105] The specific structural form of the first conductive steel sheet 121 and the second conductive steel sheet 122 is not limited.

[0106] For example, please see Figure 9 and Figure 11 The first conductive steel sheet 121 is folded over on the side near the charging roller 131 to form a first contact surface 121a.

[0107] For example, please refer to Figure 9 and Figure 12 The second conductive steel sheet 122 is folded on the side near the brush 14 to form a second contact surface 122a, and the second conductive steel sheet 122 is folded on the side near the first conductive steel sheet 121 to form a third contact surface 122b.

[0108] In one embodiment, please refer to Figure 9 and Figure 13 The conductive component 12 includes a first conductive steel sheet 121. The side of the first conductive steel sheet 121 facing away from the charging roller 131 has an electrical contact surface 12a. The photosensitive unit 10 also includes a charging roller 131 and a conductive spring 132 disposed at one end of the charging roller 131. The two opposite ends of the conductive spring 132 are electrically connected to the charging roller 131 and the first conductive steel sheet 121, respectively.

[0109] Specifically, the conductive spring 132 has good conductivity and elastic deformation capability. The first conductive steel sheet 121 is electrically connected to the charging roller 131 through the conductive spring 132. Thus, while ensuring good stability of the electrical connection between the charging roller 131 and the conductive component 12, the impact on the rotation of the charging roller 131 can be reduced.

[0110] In one embodiment, please refer to Figure 9 and Figure 13 The photosensitive unit 10 also includes a conductive bracket 133 with a clamping hole 133a. One end of the charging roller 131 passes through the clamping hole 133a. The first conductive steel sheet 121 has a first abutting surface 121a on the side near the charging roller 131. One end of the conductive spring 132 abuts against the first abutting surface 121a, and the other end of the conductive spring 132 abuts against the conductive bracket 133. This further reduces the impact on the rotation of the charging roller 131.

[0111] Specifically, the conductive support 133 is a support structure with conductive properties and has a clamping hole 133a. By inserting one end of the charging roller 131 into the clamping hole 133a, the charging roller 131 can rotate relative to the conductive support 133. At the same time, it can maintain a good electrical connection between the conductive support 133 and the charging roller 131.

[0112] The two ends of the conductive spring 132 are respectively connected to the conductive bracket 133 and the first conductive steel sheet 121, and the specific connection method is not limited.

[0113] For example, a portion of the first abutment surface 121a protrudes towards the side closest to the charging roller 131 to form a mounting post. One end of the conductive spring 132, which abuts against the first abutment surface 121a, is sleeved on the mounting post and abuts against the first abutment surface 121a. This facilitates the positioning of the conductive spring 132 and also enables a stable electrical connection between the conductive spring 132 and the first conductive steel sheet 121.

[0114] In one embodiment, the processing cartridge includes a developing unit 20, which includes a developing roller 21. The photosensitive unit 10 includes a movable component 17, which is movably disposed on the housing assembly 16. The movable component 17 is movable to switch the developing roller 21 and the photosensitive drum 11 between separation and contact. Thus, by moving the movable component 17, the relative positional relationship between the developing roller 21 and the photosensitive drum 11 can be adjusted. During the developing process, the developing roller 21 and the photosensitive drum 11 are in contact, enabling normal developing. During the cleaning process, the movable component 17 can be moved to separate the developing roller 21 and the photosensitive drum 11, preventing toner from the developing roller 21 from adsorbing onto the surface of the photosensitive drum 11.

[0115] In another embodiment, please refer to Figures 1 to 5 The processing cartridge includes a developing unit 20, which includes a developing roller 21. The photosensitive unit 10 includes a movable component 17, which is movably mounted on the housing assembly 16. When the imaging device performs a cleaning procedure, the developing roller 21 and the photosensitive drum 11 come into contact. The movable component 17 adjusts the voltage applied to the developing roller 21 by the imaging device to regulate the toner transfer between the developing roller 21 and the photosensitive drum 11. Thus, by moving the movable component 17, the voltage applied to the developing roller 21 by the imaging device can be switched, so that the developing roller 21 of the developing unit 20 does not need to be separated from the photosensitive drum 11 when the imaging device performs a cleaning procedure.

[0116] Specifically, during the developing process, the developing roller 21 and the photosensitive drum 11 are in contact. The voltage applied to the developing roller 21 by the imaging equipment allows the toner on the developing roller 21 to be properly adsorbed onto the photosensitive drum 11, thus enabling normal developing. However, during the cleaning process, the developing roller 21 and the photosensitive drum 11 remain in contact. The moving component 17 prevents the voltage applied to the developing roller 21 from easily adsorbing the toner onto the photosensitive drum 11, thus eliminating the need for separation between the developing roller 21 and the photosensitive drum 11.

[0117] In the description of this application, the references to terms such as "in one embodiment," "in some embodiments," "in a specific embodiment," or "exemplary," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine the different embodiments or examples described in this application, as well as the features of the different embodiments or examples.

[0118] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the scope of protection of this application.

Claims

1. A processing box, characterized in that, The processing box includes a photosensitive unit, the photosensitive unit comprising: Photosensitive drum; A charging roller that contacts the surface of the photosensitive drum; A brush that contacts the surface of the charging roller; A baffle is provided on at least one side of the brush, and the baffle extends along the axial direction of the charging roller.

2. The processing box according to claim 1, characterized in that, The photosensitive unit further includes a conductive component having an electrical contact surface for electrical connection with an imaging device, the electrodes of the charging roller being electrically connected to the conductive component, and the brush being electrically connected to the conductive component.

3. The processing box according to claim 1, characterized in that, The photosensitive unit includes a housing assembly, the charging roller, the brush, and the photosensitive drum are disposed on the housing assembly. Along a first direction, opposite sides of the brush are respectively connected to the housing assembly and the charging roller. At least a portion of the baffle extends to one side of the brush along a second direction, wherein the second direction is perpendicular to the first direction and the axial direction of the charging roller.

4. The processing box according to claim 2, characterized in that, The photosensitive unit includes a housing assembly and a chip. The photosensitive drum has a driving force receiving portion at one end along the axial direction. The chip has an electrical connection surface. The photosensitive drum, the charging roller, the brush, the baffle, the conductive component, and the chip are disposed on the housing assembly. The electrical contact surface and the electrical connection surface are exposed on the top surface of the housing assembly. Along the axial direction of the photosensitive drum, the electrical contact surface is located on the side of the electrical connection surface closer to the driving force receiving portion.

5. The processing box according to any one of claims 1-4, characterized in that, The thickness of the baffle is greater than or equal to 0.05 mm and less than or equal to 2 mm.

6. The processing box according to any one of claims 1-4, characterized in that, Along the axial direction of the charging roller, the extension length of the baffle is greater than or equal to the extension length of the brush; and / or, The baffle is made of PET material.

7. The processing box according to claim 3, characterized in that, The housing assembly includes a first wall, the brush is disposed on the side of the first wall away from the charging roller, and the baffle is attached to the side of the first wall along the second direction and extends toward the charging roller.

8. The processing box according to claim 7, characterized in that, The baffle plate is bonded or welded to the first wall.

9. The processing box according to claim 3 or 4, characterized in that, The brush includes an elastic layer, a fixing layer, and a cleaning layer. The cleaning layer is disposed on the side of the fixing layer near the charging roller and is in contact with the surface of the charging roller. The elastic layer is disposed on the side of the fixing layer away from the cleaning layer and is connected to the housing assembly.

10. The processing box according to claim 4, characterized in that, The processing cartridge includes a developing unit, the developing unit includes a developing roller, and the photosensitive unit includes a movable component, which is movably disposed on the housing assembly. The active component switches the developing roller and the photosensitive drum between separation and contact by movement; or, When the imaging device performs a cleaning procedure, the developing roller and the photosensitive drum come into contact, and the movable component adjusts the voltage applied to the developing roller by the imaging device to regulate the toner transfer between the developing roller and the photosensitive drum.

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