Integrated process cartridge and electrophotographic image forming system

Abstract

The application provides an integrated process cartridge and an electrophotographic imaging system, the electrophotographic imaging system comprising the integrated process cartridge, the integrated process cartridge comprising a housing, a photosensitive drum, two groups of biasing components, a charging roller, a developing roller and a cleaning component, the photosensitive drum being rotatably installed on the housing, the two groups of biasing components being distributed along the axial direction of the photosensitive drum, the biasing component comprising an elastic member and a supporting seat, the elastic member being connected between the housing and the supporting seat, the end of the charging roller being rotatably connected with the supporting seat, the elastic member forcing the charging roller to contact the photosensitive drum, the developing roller being rotatably installed on the housing and being separably contacted with the photosensitive drum, the end of the developing roller being provided with a developing gear, the cleaning component comprising a porous material, the porous material extending along the axial direction, and the porous material being in surface contact with the charging roller; one end of the photosensitive drum is provided with a photosensitive gear, the photosensitive gear being a first single-connection gear, and the first single-connection gear being a helical gear or a straight gear. The integrated process cartridge can reduce the transmission resistance, simplify the transmission gear structure and reduce the cost.

Description

Technical Field

[0001] This invention relates to the field of electrophotographic imaging technology, and more specifically to an integrated processing box and an electrophotographic imaging system equipped with the integrated processing box. Background Technology

[0002] In existing integrated processing cartridges used in electrophotographic imaging equipment, a cleaning blade is typically included to remove residual waste toner from the photosensitive drum surface to ensure cleanliness, and a waste toner hopper is configured to collect the scraped waste toner. This design occupies a significant amount of internal space, limiting the increase in toner capacity. Furthermore, the close contact between the cleaning blade and the photosensitive drum surface generates considerable frictional resistance, causing the photosensitive drum to experience high torque during rotation. To accommodate the high torque characteristics of the photosensitive drum, its end gear typically employs the following design: When the end gear uses a double helical gear, although it can reduce the impact of high torque on the printing effect to a certain extent and achieve a smoother and more precise power transmission, the production precision requirements of the double helical gear are extremely high, and the production cost is relatively large.

[0003] When a single-gear is used as the end gear, the structure of the single-gear is usually optimized by at least one of the following methods: increasing the module, increasing the tooth width, increasing the helix angle, positive displacement correction, using circular arc teeth or double circular arc teeth, and tooth tip edge modification, in order to reduce the impact of high torque on printing results. Among these: Increasing the module can thicken the tooth root and increase the pitch circle, thereby significantly improving bending strength and reducing tangential force. However, correspondingly, the radial dimension of the gear increases, requiring more space; the tip circle velocity increases, leading to increased dynamic load and noise; and the meshing velocity increases, increasing the risk of scuffing.

[0004] Increasing the tooth width reduces the load per unit tooth width, as well as the contact stress and bending stress. However, this correspondingly increases the axial dimension of the gear, resulting in a less compact structure. Furthermore, when the tooth width factor is too large, the load distribution along the tooth direction becomes severely uneven (tooth direction load concentration), which actually reduces the effective load-bearing capacity. In addition, the requirements for the parallelism and rigidity of the photosensitive drum core shaft system increase, and the machining difficulty also increases accordingly.

[0005] Increasing the helix angle can increase the overlap ratio, improve transmission smoothness, and distribute the load. However, correspondingly, the axial force increases significantly; and the risk of axial movement increases, requiring enhanced axial positioning; when the tooth surface sliding speed increases, the tendency for wear or scuffing increases, and the machining difficulty also increases accordingly.

[0006] Positive displacement correction can thicken the tooth root, improving bending strength. However, it can lead to a sharper tooth tip, reducing contact strength; the contact ratio may decrease, requiring synchronized displacement of the mating gears, increasing design complexity. Furthermore, it may reduce tooth tip clearance, causing interference.

[0007] Using circular arc teeth or double circular arc teeth can improve contact strength, but it requires extremely high installation accuracy, has high processing costs, and does not offer significant advantages in bending strength.

[0008] Tooth tip trimming can reduce meshing impact and dynamic load, but it requires high gear machining accuracy and precise calculation of trimming amount; when the trimming amount is too large, the effective tooth height decreases and the contact ratio decreases.

[0009] Furthermore, the aforementioned reinforcement design places stringent requirements on gear materials. Therefore, the reinforcement design of single-gear transmissions under high torque requires a comprehensive approach considering factors such as materials, geometric parameters, and structural form, resulting in complex structural design, high production precision requirements, and high costs. Summary of the Invention

[0010] The primary objective of this invention is to provide an integrated processing box that reduces transmission resistance, simplifies the transmission gear structure, and is cost-effective.

[0011] Another object of the present invention is to provide an electrophotographic imaging system having the above-mentioned integrated processing box.

[0012] To achieve the first objective of this invention, the present invention provides an integrated processing cartridge, comprising a housing, a photosensitive drum, two sets of biasing assemblies, a charging roller, and a developing roller. The photosensitive drum is rotatably mounted on the housing. The two sets of biasing assemblies are distributed along the axial direction of the photosensitive drum. Each biasing assembly includes an elastic element and a support base. The elastic element is connected between the housing and the support base. Each end of the charging roller is rotatably connected to a support base. The elastic element forces the charging roller to contact the photosensitive drum. The developing roller is rotatably mounted on the housing and is in separable contact with the photosensitive drum. A developing gear is provided at the end of the developing roller. The integrated processing cartridge also includes a cleaning assembly comprising a porous material that extends axially and contacts the surface of the charging roller. A photosensitive gear is provided at one end of the photosensitive drum. The photosensitive gear is a first single-gear, which is either a helical gear or a spur gear.

[0013] As can be seen from the above, eliminating the cleaning blade effectively eliminates the frictional resistance generated by the cleaning blade on the photosensitive drum, significantly reducing the driving torque of the photosensitive drum. This allows for the use of lower-cost spur or helical gears for the photosensitive gears, and the low-torque operating environment helps extend the lifespan of the electrophotographic imaging equipment. Furthermore, eliminating the cleaning blade simplifies the structure of the integrated processing cartridge and helps increase the toner cartridge capacity. By using a cleaning component to clean the charging roller, firstly, the frictional resistance generated by the porous material contacting the surface of the charging roller is far less than the frictional resistance generated by the cleaning blade on the photosensitive drum, thus having little impact on the driving torque of the photosensitive drum. Secondly, the porous material adsorbs and contains the small amount of waste toner remaining on the surface of the charging roller, ensuring the charging effect of the charging roller on the photosensitive drum, guaranteeing the quality of the electrostatic latent image, and improving print quality.

[0014] In a preferred embodiment, the developing gear and the photosensitive gear are separably meshed; the photosensitive gear is used to mesh with a first drive head of an electrophotographic imaging device, or the integrated processing box further includes a drive force receiving head, which meshes directly or indirectly with the developing gear, and the drive force receiving head is used to mesh with a second drive head of an electrophotographic imaging device.

[0015] As can be seen from the above, the driving torque of the photosensitive drum is significantly reduced due to the elimination of the cleaning blade. Therefore, there is no need to use a double gear drive, and the printing quality requirements can be met by a single gear drive. This simplifies the drive structure and reduces production costs.

[0016] Another preferred embodiment is that the developing gear and the photosensitive gear are separated; the photosensitive gear is used to engage with the first drive head of the electrophotographic imaging device; the integrated processing box also includes a drive force receiving head, which directly or indirectly engages with the developing gear, and the drive force receiving head is used to engage with the second drive head of the electrophotographic imaging device.

[0017] As can be seen from the above, this design uses two separate drive systems to independently drive the photosensitive drum and the developing roller, effectively blocking the transmission of vibrations generated by the rotating developing roller, powder feeding roller, and stirring frame to the photosensitive drum, thereby avoiding printing defects caused by vibration and improving print quality.

[0018] A further embodiment includes a housing comprising a drum frame and a developing frame, wherein the photosensitive drum, bias assembly, and charging roller are all mounted on the drum frame, the developing frame is detachably connected to the drum frame, and the developing roller is mounted on the developing frame; the cleaning assembly also includes a bracket extending axially and connected to the housing, wherein porous material is mounted on the bracket.

[0019] As can be seen from the above, the structural design makes the cleaning components easy to disassemble, maintain and clean, which can not only ensure the stable imaging quality of the photosensitive drum electrostatic latent image, but also extend the overall service life of the integrated processing box.

[0020] A further embodiment is that the bracket and the drum frame are detachably connected, and / or the porous material is detachably connected to the bracket; when the bracket and the drum frame are detachably connected, the bracket is provided with a first snap-fit ​​structure, the drum frame is provided with a second snap-fit ​​structure, and the first snap-fit ​​structure and the second snap-fit ​​structure are fastened together, or the bracket is provided with a first magnetic attraction element, the drum frame is provided with a second magnetic attraction element, and the first magnetic attraction element and the second magnetic attraction element generate an attractive magnetic force between them; when the porous material is detachably connected to the bracket, the porous material is provided with a base band, and the base band is connected to the bracket by adhesive, and the base band is made of polyester material or nylon material.

[0021] As can be seen from the above, the design can further improve the convenience of disassembling, assembling, maintaining, and cleaning the cleaning components.

[0022] A further alternative is to use felt as the porous material, with a curved surface on the support that matches the outer contour of the charging roller, and the felt fixed on the curved surface; or to use sponge as the porous material.

[0023] As can be seen from the above, the bracket is designed to be adapted to the type of porous material, so that the porous material and the charging roller are fully in contact, thus ensuring the cleaning effect of the porous material on the charging roller.

[0024] A further approach is to have the first length of the porous material in the axial direction of the photosensitive drum greater than or equal to the second length of the charging roller.

[0025] As can be seen from the above, by making the first length of the porous material greater than or equal to the second length of the charging roller in the axial direction of the photosensitive drum, the porous material can completely cover the working surface of the charging roller along the axial direction, thereby ensuring that the surface cleanliness of the charging roller is uniform and consistent throughout the entire effective length range, avoiding differences in charging performance at different positions in the axial direction of the charging roller due to insufficient local cleaning, and thus ensuring the quality stability of the electrostatic latent image on the surface of the photosensitive drum.

[0026] To achieve the second objective of the present invention, the present invention provides an electrophotographic imaging system, including an electrophotographic imaging device, the electrophotographic imaging device including a body, the body having a processing box mounting cavity, wherein the aforementioned integrated processing box is detachably mounted in the processing box mounting cavity.

[0027] As can be seen from the above, by configuring the aforementioned integrated processing box, the electrophotographic imaging system can effectively reduce the driving load on its drive head, which helps to extend the service life of the electrophotographic imaging equipment and ensure print quality.

[0028] A further embodiment is that the electrophotographic imaging device also includes a first drive head and / or a second drive head, wherein the first drive head meshes with a photosensitive gear, and the second drive head meshes directly or indirectly with a developing gear.

[0029] As can be seen from the above, the integrated processing box can be adapted to different types of electrophotographic imaging equipment with single or dual drive heads, and has strong versatility and good compatibility.

[0030] A further proposed solution is that the first drive head is a second single gear, the tooth profile of which matches the tooth profile of the first single gear; or the first drive head is a double gear, the tooth profile of one of the gear rings of the double gear matches the tooth profile of the first single gear, and the gear ring meshes with the first single gear.

[0031] As can be seen from the above, this integrated processing box can mesh with both the single-gear drive head and the corresponding gear ring of the double-gear through the first single gear, thus adapting to electrophotographic imaging equipment equipped with single-gear drive heads or double-gear drive heads, and has good versatility and compatibility. Attached Figure Description

[0032] Figure 1 This is a structural schematic diagram of the first embodiment of the integrated processing box of the present invention.

[0033] Figure 2 This is a structural diagram of the first embodiment of the integrated processing box of the present invention with some components omitted.

[0034] Figure 3 This is a cross-sectional view of the first embodiment of the integrated processing box of the present invention, with some components omitted.

[0035] Figure 4 This is a structural diagram of the second embodiment of the integrated processing box of the present invention with some components omitted.

[0036] Figure 5 This is a structural diagram of the third embodiment of the integrated processing box of the present invention with some components omitted.

[0037] Figure 6 This is a partial structural diagram of the electrophotographic imaging device of the electrophotographic system of the present invention.

[0038] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0039] First embodiment of integrated processing box Reference Figure 1 and Figure 2 The integrated processing box 100 includes a housing 1, a photosensitive drum 2, a biasing assembly 3, a charging roller 4, a developing roller 5, a powder feeding roller 6, and a cleaning assembly 7.

[0040] The housing 1 includes a drum frame 11 and a developing frame 12. The drum frame 11 and the developing frame 12 are detachably connected and movably connected, so that the photosensitive drum 2 and the developing roller 5 can be in relative contact or separated.

[0041] The photosensitive drum 2 is rotatably mounted on the drum frame 11 around its own axis, and a photosensitive gear 21 is provided at one end of the photosensitive drum 2. Two sets of biasing components 3 are mounted on the drum frame 11, distributed along the axial direction of the photosensitive drum 2. Each biasing component 3 includes an elastic element 31 and a support seat 32. The elastic element 31 is connected between the drum frame 11 and the support seat 32. The elastic element 31 is a compression spring, preferably with its axis facing and intersecting the axis of the photosensitive drum 2. Each end of the charging roller 4 is rotatably connected to a support seat 32. The elastic element 31 forces the support seat 32 to move towards the photosensitive drum 2, thereby controlling the charging roller 4 to maintain contact with the photosensitive drum 2 and ensuring the charging stability and charging effect of the charging roller 4 on the photosensitive drum 2.

[0042] The developing frame 12 is equipped with a toner hopper for storing toner. A developing roller 5 is rotatably mounted on the developing frame 12 about its own axis, and is located at the toner outlet of the toner hopper. The developing roller 5 transfers the toner from the toner hopper to the photosensitive drum 2 for developing the electrostatic latent image on the photosensitive drum 2. Furthermore, the developing frame 12 has a toner discharge blade at the toner outlet of the toner hopper. The blade of the discharge blade abuts against the outer circumferential surface of the developing roller 5. The discharge blade controls the thickness of the toner layer adsorbed on the developing roller 5 to ensure reliable toner transfer from the developing roller 5 to the photosensitive drum 2, thus ensuring the quality of the electrostatic latent image development on the photosensitive drum 2. A developing gear 51 is provided at one end of the developing roller 5, and the developing gear 51 is located at the photosensitive gear 21 of the photosensitive drum 2.

[0043] The toner delivery roller 6 is rotatably mounted on the developing frame 12 around its own axis. The toner delivery roller 6 is located inside the toner hopper and at the toner outlet. The toner delivery roller 6 is in contact with the developing roller 5 and is used to transfer the toner in the toner hopper to the developing roller 5 and to coat the developing roller 5 with toner. One end of the toner delivery roller 6 is provided with a toner delivery gear 61, which directly or indirectly meshes with the developing gear 51.

[0044] In this embodiment, an idler gear is provided between the developing gear 51 and the powder feeding gear 61, and the idler gear meshes with the developing gear 51 and the powder feeding gear 61 respectively; the developing gear 51 is separably meshed with the photosensitive gear 21, so that the driving force input by the photosensitive gear 21 can be transmitted to the developing roller 5 through the developing gear 51 to make the developing roller 5 rotate, and then transmitted to the powder feeding roller 6 through the idler gear and the powder feeding gear 61 to make the powder feeding roller 6 rotate.

[0045] In this embodiment, the photosensitive gear 21 is used to mesh with the first drive head of the electrophotographic imaging device to receive the driving force transmitted by the first drive head; and the photosensitive gear 21 transmits the driving force to the developing roller 5 through meshing with the developing gear 51, and transmits the driving force to the powder feeding roller 6 through the idler gear and the powder feeding gear 61.

[0046] Combination Figure 3The cleaning component 7 includes a porous material 71 that extends axially and contacts the surface of the charging roller 4. The porous material 71 is used to adsorb and contain a small amount of waste powder remaining on the surface of the charging roller 4, which can ensure the charging effect of the charging roller 4 on the photosensitive drum 2, guarantee the quality of the electrostatic latent image, and improve the print quality.

[0047] In this invention, the cleaning blade is eliminated, and the cleaning function is achieved by the porous material 71 contacting the surface of the charging roller 4. Based on this, the photosensitive gear 21 can be a first single-link gear, preferably a helical gear, but it can also be a spur gear. Because the cleaning blade is eliminated, the frictional resistance generated by the cleaning blade on the photosensitive drum 2 is eliminated, and the driving torque of the photosensitive drum 2 is significantly reduced. This significant reduction in driving torque means that the first single-link gear does not need to have high torque transmission capacity, thus eliminating the need for high-strength materials or complex reinforcement structures. This allows for greater freedom in material selection, geometric parameters, and structural design. Therefore, the photosensitive gear 21 can use lower-cost spur or helical gears, and low-torque operation reduces wear on the transmission system, thereby extending the service life of the electrophotographic imaging equipment. Furthermore, eliminating the cleaning blade simplifies the structure of the integrated processing cartridge 100 and helps increase the toner hopper capacity. Furthermore, since the frictional resistance generated by the contact between the porous material 71 and the surface of the charging roller 4 is much smaller than the frictional resistance generated by the cleaning scraper on the photosensitive drum 2, the influence of the porous material 71 on the driving torque of the photosensitive drum 2 can be ignored.

[0048] Furthermore, as in this embodiment, the cleaning component 7 also includes a bracket 72, which extends axially and is connected to the housing 1. The porous material 71 is mounted on the bracket 72. The bracket 72 is provided to better support the porous material 71, allowing the porous material 71 to fit more closely to the surface of the charging roller 4, thus ensuring a better cleaning effect on the charging roller 4.

[0049] The support 72 has an elongated structure. Along the axial direction of the photosensitive drum 2, the length of the support 72 is matched to the effective working length of the charging roller 4. The first length of the porous material 71 is greater than or equal to the second length of the charging roller 4 (greater than or equal to the effective working length). Because the first length of the porous material 71 is greater than or equal to the second length of the charging roller 4, the contact area between the porous material 71 and the charging roller 4 completely covers the effective working length of the charging roller 4 along the axial direction of the photosensitive drum 2. This allows surface foreign matter (such as toner and paper scraps) on the entire axial range of the charging roller 4 to be effectively removed, effectively preventing uneven axial charging of the charging roller 4 due to localized cleaning blind spots. Uniform axial charging of the charging roller 4 ensures the axial consistency of the electrostatic latent image formed on the surface of the photosensitive drum 2, thereby improving the stability of print quality.

[0050] Preferably, the bracket 72 is detachably connected to the drum frame 11. In this embodiment, the bracket 72 is provided with a first magnetic suction member 721, and the drum frame 11 is provided with a second magnetic suction member 111. Magnetic attraction is generated between the first magnetic suction member 721 and the second magnetic suction member 111. When the bracket 72 and the drum frame 11 are assembled, the first magnetic suction member 721 is aligned with the second magnetic suction member 111, and the two are fixedly connected under the action of magnetic attraction, thereby fixing the bracket 72 to the drum frame 11. It is understood that in other embodiments, a first snap-fit ​​structure can be provided on the bracket 72, and a second snap-fit ​​structure can be provided on the drum frame 11, with the first snap-fit ​​structure and the second snap-fit ​​structure engaging to achieve a detachable connection between the bracket 72 and the drum frame 11; or, the bracket 72 and the drum frame 11 can be connected by bolts. This design facilitates the disassembly, assembly, maintenance, and cleaning operations between the cleaning component 7 and the drum frame 11, ensuring the cleanliness of the charging roller 4 and guaranteeing printing quality.

[0051] Furthermore, the porous material 71 can be fixed to the bracket 72 by means of embedding, clamping, or bonding to prevent displacement or detachment of the porous material 71 during operation, ensuring continuous and stable cleaning function. Preferably, the porous material 71 is detachably connected to the bracket 72; for example, the porous material 71 has a base strip, which is detachably connected to the bracket 72 by an adhesive (such as double-sided tape), wherein the base strip is made of polyester fiber (polyester) or nylon material. This design allows the porous material 71 to be replaced separately, thereby extending the service life of the cleaning assembly 7. It is understood that, since the porous material 71 can be detached and replaced separately from the bracket 72, the bracket 72 and the drum frame 11 can also be fixed in a non-detachable manner (such as integral molding or permanent bonding) to further simplify the structure. With the rigid support of the bracket 72, the porous material 71 can maintain a constant contact pressure and a uniform contact area during the rotation of the charging roller 4, avoiding local cleaning failure due to deformation or collapse of the porous material 71, thereby effectively removing residual toner and paper scraps from the surface of the charging roller 4, maintaining the surface cleanliness of the charging roller 4, and ensuring the stability of charging quality.

[0052] The porous material 71 is preferably made of felt or sponge, both of which have good adsorption and elasticity, and can effectively adsorb and remove residual toner and paper scraps on the surface of the charging roller 4. When the porous material 71 is felt, the support 72 preferably has an arc surface that matches the outer circumferential contour of the charging roller 4. The felt is fixed on the arc surface so that the felt fits the outer circumferential contour of the charging roller 4, ensuring the cleaning effect on the charging roller 4. Since the felt is relatively dense and has a certain rigidity, the shaping support of the arc surface of the support 72 can keep the felt in a stable contact state and uniform contact pressure during the rotation of the charging roller 4, avoiding cleaning failure due to felt deformation. When the porous material 71 is a sponge, the sponge preferably has an arc surface that matches the outer contour of the charging roller 4, so that the arc surface fits the outer contour of the charging roller 4, while avoiding uneven contact pressure between the sponge and the charging roller 4. Because the sponge is soft and highly elastic, the pre-formed arc surface can achieve uniform contact with the charging roller 4 without relying on a specific mechanism of the support 72, thereby preventing excessive local pressure from causing excessive wear of the sponge or damage to the surface of the charging roller 4, and preventing insufficient local pressure from causing incomplete cleaning, ensuring the cleaning effect on the charging roller 4. It is understood that the specific type of porous material 71 and the corresponding structure of the support 72 can be selected and adjusted according to actual cleaning needs, cost requirements, and process conditions.

[0053] In summary, by eliminating the cleaning blade and replacing it with porous material 71 to clean the charging roller 4, the transmission resistance of the photosensitive drum 2 can be effectively reduced. This allows the photosensitive gear 21 to use a simpler single-gear structure (spur gear or helical gear), eliminating the need for high-torque reinforcement design and complex transmission structures such as double gears. This reduces the production cost of the transmission gears and extends the service life of the equipment. At the same time, eliminating the cleaning blade simplifies the structure of the integrated processing box 100, which helps to increase the toner hopper capacity. Furthermore, the detachable connection design of porous material 71 with the bracket 72 and drum frame 11 facilitates the maintenance and replacement of the cleaning component 7, ensuring the continuous stability of print quality.

[0054] Second embodiment of integrated processing box Reference Figure 4 The difference between this embodiment and the first embodiment of the integrated processing box is that: In this embodiment, the photosensitive gear 21 no longer meshes with the first drive head of the electrophotographic imaging device; and the idler gear is redesigned as a drive force receiving head 8, which directly meshes with the developing gear 51 and the powder feeding gear 61. The drive force receiving head 8 is used to mesh with the second drive head of the electrophotographic imaging device to receive the drive force transmitted by the second drive head, thereby transmitting the drive force to the developing roller 5 and the powder feeding roller 6 through meshing with the developing gear 51 and the powder feeding gear 61; at the same time, the drive force is transmitted to the photosensitive drum 2 through the meshing of the photosensitive gear 21 with the developing gear 51.

[0055] Of course, as an alternative, the driving force receiving head 8 and the developing gear 51 can be indirectly engaged (i.e., an idler gear is provided between them) and / or the driving force receiving head 8 and the powder feeding gear 61 can be indirectly engaged (i.e., an idler gear is provided between them).

[0056] As can be seen, unlike the driving force input method of the first embodiment of the integrated processing box 100, the driving force in this embodiment is input by the driving force receiving head 8 at the end face of the integrated processing box 100, and is transmitted to the photosensitive drum 2, the developing roller 5, and the powder feeding roller 6 through the gear set (including but not limited to the photosensitive gear 21, the developing gear 51, and the powder feeding gear 61). Similarly, since the cleaning blade is eliminated, the low torque characteristic of the photosensitive drum 2 can reduce the load on the second driving head and extend the life of the electrophotographic imaging equipment. In addition, the single-drive input method makes the structure of the integrated processing box 100 simpler and reduces the production cost.

[0057] Unlike the first embodiment, in this embodiment, the driving force is input from the driving force receiving head 8 at the end face of the integrated processing cartridge 100, and transmitted to the photosensitive drum 2, the developing roller 5, and the powder feeding roller 6 through a gear set (including but not limited to the photosensitive gear 21, the developing gear 51, and the powder feeding gear 61). Since the cleaning blade is eliminated, the driving torque of the photosensitive drum 2 is significantly reduced, thereby reducing the load on the driving force receiving head 8 and helping to extend the service life of the electrophotographic imaging equipment. Furthermore, the single-sided driving input method eliminates the need for another driving connection structure, making the structure of the integrated processing cartridge 100 simpler and further reducing production costs. The arrangement of the cleaning component 7 in this embodiment is the same as in the first embodiment, and will not be described again here.

[0058] Third embodiment of integrated processing box Reference Figure 5 The difference between this embodiment and the first embodiment of the integrated processing box is that: In this embodiment, the photosensitive gear 21 does not mesh with the developing gear 51, and the idler gear is redesigned as a drive force receiving head 8, which directly meshes with the developing gear 51 and the powder feeding gear 61. The drive force receiving head 8 is used to mesh with the second drive head of the electrophotographic imaging device to receive the drive force transmitted by the second drive head, thereby transmitting the drive force to the developing roller 5 and the powder feeding roller 6 through meshing with the developing gear 51 and the powder feeding gear 61.

[0059] Unlike the first embodiment, this embodiment employs a dual-drive head system: the photosensitive drum 2 is directly driven by the first drive head of the electrophotographic imaging device, while the developing roller 5 and the toner roller 6 are driven by the second drive head (the driving force is input via the drive force receiving head 8). Because the cleaning blade is eliminated, the driving torque of the photosensitive drum 2 is significantly reduced, thereby reducing the load on the first drive head and helping to extend the service life of the electrophotographic imaging device. Furthermore, since the dual drive heads operate independently, there is no need for meshing transmission between the photosensitive gear 21 and the developing gear 51, effectively blocking the transmission of vibration from the developing assembly to the photosensitive drum 2, avoiding printing defects caused by vibration, and improving print quality.

[0060] Example of an electrophotographic imaging system An electrophotographic imaging system includes an electrophotographic imaging device and an integrated processing unit. Combined with... Figure 6 The electronic photographic imaging device includes a body 200, and the body 200 is provided with a processing box mounting cavity 201; the integrated processing box is the integrated processing box described in any of the first to third embodiments of the above-mentioned integrated processing box, and the integrated processing box is detachably installed in the processing box mounting cavity 201.

[0061] When the integrated processing box described in the first embodiment of the integrated processing box is used, the electrophotographic imaging device may only have a first drive head 202. After the integrated processing box is installed in the processing box mounting cavity 201, the photosensitive gear meshes with the first drive head 202.

[0062] When the integrated processing box described in the second embodiment of the integrated processing box is used, the electrophotographic imaging device may only need to be equipped with a second drive head. After the integrated processing box is installed in the processing box mounting cavity 201, the drive force receiving head engages with the second drive head.

[0063] When the integrated processing box described in the third embodiment of the integrated processing box is used, the electrophotographic imaging device is provided with a first driving head 202 and a second driving head. After the integrated processing box is installed in the processing box mounting cavity 201, the photosensitive gear meshes with the first driving head 202, and the driving force receiving head meshes with the second driving head.

[0064] Specifically, the first drive head 202 is a second single-gear, the tooth profile of which matches the tooth profile of the first single-gear (i.e., the photosensitive gear); or the first drive head 202 is a double-gear, the tooth profile of one of the gear rings of the double-gear matches the tooth profile of the first single-gear, and this gear ring meshes with the first single-gear. Therefore, the integrated processing box, through the first single-gear, can mesh with both the single-gear drive head and the corresponding gear ring of the double-gear, thus adapting to electrophotographic imaging equipment equipped with either a single-gear drive head or a double-gear drive head, demonstrating good versatility and compatibility.

[0065] Finally, it should be emphasized that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An integrated processing box, including: case; A photosensitive drum, which is rotatably mounted on the housing; Two sets of biasing assemblies are distributed along the axial direction of the photosensitive drum. Each biasing assembly includes an elastic element and a support base, with the elastic element connected between the housing and the support base. A charging roller, each end of which is rotatably connected to one of the support seats, and the elastic element forces the charging roller into contact with the photosensitive drum; A developing roller is rotatably mounted on the housing and is in separable contact with the photosensitive drum. A developing gear is provided at the end of the developing roller. Its features are: The integrated processing box also includes a cleaning component, which comprises a porous material that extends along the axial direction and contacts the charging roller surface. One end of the photosensitive drum is provided with a photosensitive gear, which is a first single gear, and the first single gear is a helical gear or a spur gear.

2. The integrated processing box according to claim 1, characterized in that: The developing gear and the photosensitive gear can be separably engaged; The photosensitive gear is used to mesh with the first drive head of the electrophotographic imaging device, or The integrated processing box also includes a driving force receiving head, which directly or indirectly meshes with the developing gear, and the driving force receiving head is used to mesh with the second driving head of the electrophotographic imaging device.

3. The integrated processing box according to claim 1, characterized in that: The developing gear is separated from the photosensitive gear; The photosensitive gear is used to mesh with the first drive head of the electrophotographic imaging device; The integrated processing box also includes a driving force receiving head, which directly or indirectly meshes with the developing gear, and the driving force receiving head is used to mesh with the second driving head of the electrophotographic imaging device.

4. The integrated processing box according to any one of claims 1 to 3, characterized in that: The housing includes a drum frame and a developing frame. The photosensitive drum, the bias assembly, and the charging roller are all mounted on the drum frame. The developing frame is detachably connected to the drum frame, and the developing roller is mounted on the developing frame. The cleaning assembly also includes a bracket that extends along the axial direction and is connected to the housing, with the porous material mounted on the bracket.

5. The integrated processing box according to claim 4, characterized in that: The bracket is detachably connected to the drum frame, and / or The porous material is detachably connected to the support; When the bracket is detachably connected to the drum frame The bracket is provided with a first snap-fit ​​structure, and the drum frame is provided with a second snap-fit ​​structure. The first snap-fit ​​structure and the second snap-fit ​​structure are fastened together. The bracket is provided with a first magnetic attraction element, and the drum frame is provided with a second magnetic attraction element. The first magnetic attraction element and the second magnetic attraction element generate a magnetic attraction force between them. When the porous material is detachably connected to the bracket, the porous material has a base strip, which is connected to the bracket by an adhesive. The base strip is made of polyester or nylon.

6. The integrated processing box according to claim 4, characterized in that: The porous material is felt, and the bracket has an arc surface that matches the outer periphery of the charging roller; the felt is fixed to the arc surface; or The porous material is a sponge.

7. The integrated processing box according to claim 6, characterized in that: Along the axial direction of the photosensitive drum, the first length of the porous material is greater than or equal to the second length of the charging roller.

8. An electrophotographic imaging system, comprising an electrophotographic imaging device, the electrophotographic imaging device including a body, the body having a processing box mounting cavity, characterized in that, The integrated processing box as described in any one of claims 1 to 7 is detachably installed within the processing box mounting cavity.

9. The electrophotographic imaging system according to claim 8, characterized in that: The electrophotographic imaging device also includes: A first driving head, which meshes with the photosensitive gear; and / or The second drive head directly or indirectly meshes with the developing gear.

10. The electrophotographic imaging system according to claim 9, characterized in that: The first drive head is a second single-gear, and the tooth profile of the second single-gear matches the tooth profile of the first single-gear; or The first drive head is a double gear, and the tooth profile of one of the gear rings matches the tooth profile of the first single gear, and the gear ring meshes with the first single gear.

Images