Developing cartridge

Abstract

The utility model discloses a developing box, which has opposite conductive ends and driving ends in the left-right direction. The developing box comprises a developing member and a powder feeding member. The developing member comprises a rotatable developing roller shaft, and the powder feeding member comprises a powder feeding roller shaft. The driving end is provided with a driving force receiving member and a first powder feeding member gear, and the conductive end is provided with a second powder feeding member gear, a third idler gear and a second developing member gear. The first powder feeding member gear and the second powder feeding member gear are respectively sleeved on the two ends of the powder feeding roller shaft, and the second developing member gear is sleeved on the developing roller shaft. The driving force receiving member comprises a force receiving body and a first transmission body gear combined with the force receiving body. The first transmission body gear is engaged with the first powder feeding member gear. The third idler gear is simultaneously engaged with the second powder feeding member gear and the second developing member gear. The powder feeding member is directly driven by the driving end, and the developing member is driven by the idler gear in the conductive end. The double-end cooperative transmission is realized, the transmission stability and the uniformity of toner conveying are improved, and the degree of freedom of the structure design of the developing box is improved.

Description

Technical Field

[0001] This application relates to the field of electrophotographic imaging technology, and more particularly to a developing cartridge. Background Technology

[0002] In electrophotographic imaging equipment, the developing cartridge typically receives external driving force through the drive end, which in turn drives the developing element and the toner feeding element to rotate, completing the toner delivery and developing process.

[0003] In existing technologies, the driving force of the developing unit is mostly transmitted step-by-step through gears at the drive end, resulting in a complex structure and making it prone to affecting the uniformity of development due to poor gear meshing or insufficient torque. Furthermore, the toner feeding unit is usually only stressed on one side, and the asynchronous rotation of the two ends of the toner feeding rollers can easily cause uneven toner supply, leading to problems such as differences in image density or blank edges. To improve transmission reliability, some developing cartridges have attempted to increase the number of transmission gears, but this further compresses the internal space and limits the flexibility of the structural layout.

[0004] Therefore, there is an urgent need for a developer cartridge structure with a short transmission path, balanced force, and flexible layout to improve the stability of toner delivery and enhance design freedom. Utility Model Content

[0005] The developing cartridge provided by this utility model can solve at least one of the above-mentioned technical problems, and the specific technical solution is as follows:

[0006] A developing cartridge has opposing conductive ends and driving ends in a left-right direction. The developing cartridge includes: a developing element, which includes a developing roller shaft and is rotatable about a first axis parallel to the left-right direction; and a powder feeding element, which includes a powder feeding roller shaft and is used to feed developer to the developing element. The driving end is characterized by having a driving force receiving element and a first powder feeding gear, while the conductive end is characterized by having a second powder feeding gear, a third idler gear, and a second developing gear. The first and second powder feeding gears are respectively sleeved at both ends of the powder feeding roller shaft, and the second developing gear is sleeved on the developing roller shaft. The driving force receiving element includes: a force receiving body for receiving driving force from outside the developing cartridge; and a first conveying gear, which is engaged with the force receiving body. The first conveying gear meshes with the first powder feeding gear; wherein the third idler gear simultaneously meshes with both the second powder feeding gear and the developing gear.

[0007] In some embodiments, the developing cartridge includes an extension portion attached to one side of the conductive end of the developing cartridge. The extension portion has at least two through holes, and the developing cartridge has at least two limiting protrusions corresponding to the through holes, the limiting protrusions cooperating with the through holes.

[0008] In some embodiments, the through hole is provided with at least one limiting abutment in the circumferential direction, and the limiting abutment abuts against the limiting protrusion.

[0009] In some embodiments, the developing cartridge includes a developer adjustment member that extends in a left-right direction and is used to adjust the developer on the developing element. One end of the extension is connected to the developer adjustment member.

[0010] In some embodiments, the developing cartridge can be detachably connected to the drum housing and installed together in the imaging device, and the extension is connected to the electrodes of the imaging device or to the drum frame electrodes disposed on the drum frame of the drum housing.

[0011] In some embodiments, a conductive bend is formed at the other end of the extension.

[0012] In some embodiments, the extension is a torsion spring.

[0013] In some embodiments, the developing cartridge includes a developer adjusting member that extends in a left-right direction for adjusting the developer on the developing element. The developer adjusting member also includes an extension integrally formed with the developer adjusting member.

[0014] In some embodiments, the diameter of the first conveying gear is larger than the diameter of the first powder feeding gear. The beneficial effects of this invention are: by directly driving the first powder feeding gear at the drive end and linking the second developing gear at the conductive end using a third idler wheel, dual-end coordinated transmission is achieved, improving transmission stability and toner delivery uniformity. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the developing cartridge provided in the first embodiment of this application.

[0017] Figure 2 for Figure 1 The diagram shows the structure of the hidden end cap of the developing cartridge drive end.

[0018] Figure 3 This is a schematic diagram of the structure of the hidden end cap of the developing cartridge provided in the second embodiment of this application.

[0019] Figure 4 for Figure 3The diagram shows a structural schematic of the developing cartridge from another perspective.

[0020] Figure 5 for Figure 3 The diagram shows the structure of the conductive end of the developing cartridge.

[0021] Figure 6 for Figure 3 A schematic diagram of another embodiment of the conductive end of the developing cartridge is shown.

[0022] Figure 7 This is a schematic diagram of the structure of the hidden end cap of the developing cartridge provided in the third embodiment of this application.

[0023] Figure 8 for Figure 7 The diagram shows the structure of the conductive end of the developing cartridge.

[0024] Figure 9 This is a schematic diagram of the structure of the hidden end cap of the developing cartridge provided in the fourth embodiment of this application.

[0025] Figure 10 for Figure 9 The diagram shows the structure of the conductive end of the developing cartridge.

[0026] Figure 11 This is a schematic diagram of the structure of the hidden end cap of the developing cartridge provided in the fifth embodiment of this application.

[0027] Figure 12 for Figure 11 The diagram shows a structural schematic of the developing cartridge from another perspective.

[0028] Figure 13 This is a schematic diagram of the processing box structure provided in the sixth embodiment of this application.

[0029] Figure 14 This is a structural schematic diagram of the end cap of the hidden portion of the developing cartridge provided in the seventh embodiment of this application.

[0030] Figure 15 for Figure 14 The diagram shows a structural schematic of the developing cartridge from another perspective.

[0031] Figure 16 for Figure 14 The diagram shows a structural schematic of the developing chamber from another perspective.

[0032] Figure 17 This is a schematic diagram of the structure of a developing cartridge provided in another embodiment of this application. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0034]

Example 1

[0035] Figure 1 This is a schematic diagram of the developing cartridge provided in the first embodiment of this application; Figure 2 for Figure 1 The diagram shows the structure of the hidden end cap of the developer cartridge drive end; as shown. Figure 1-2 As shown, in this embodiment, the developing cartridge 1 can be detachably connected to the drum cartridge 2 to form a processing cartridge. The developing cartridge 1 includes a housing 2 forming a developer chamber and a rotating component rotatably mounted in the housing 2. The rotating component can be, for example, a developing component 31 for conveying developer outward. The developing component 31 includes a developing roller shaft 311A. It can also be a powder feeding component arranged adjacent to the developing component 31 and conveying developer to the developing component 31. The powder feeding component includes a powder feeding component shaft / powder feeding roller shaft. It can also be a stirring component 33 located in the developer chamber 10. The stirring component 33 is used to stir the developer in the developer chamber 10, which can prevent the developer from clumping on the one hand and convey the developer to the powder feeding component on the other hand.

[0036] The developing element 31 rotates about a first axis, and the housing 2 extends along a first direction parallel to the first axis. The developing cartridge 1 also has a second direction perpendicular to the first direction and a third direction perpendicular to both the first and second directions. The first direction is defined as the left-right direction of the developing cartridge 1, the second direction is defined as the front-back direction perpendicular to the first direction, and the third direction is defined as the up-down direction perpendicular to both the first and second directions. (Refer to...) Figure 1 In the first direction, the left end 51 of the developing cartridge 1 is located to the left of the developing cartridge 1, and the right end 52 is located to the right of the developing cartridge 1; in the second direction, the front end 53 of the developing cartridge 1 is located in front of the developing cartridge 1, and the rear end 54 is located behind the developing cartridge 1; in the third direction, the upper end 55 of the developing cartridge 1 is located above the developing cartridge 1, and the lower end 56 is located below the developing cartridge 1. The left end 51 is the driving end, and the right end 52 is the conductive end; in other words, the driving end and the conductive end are opposite each other in the first / left-right direction.

[0037] Meanwhile, in this embodiment, such as Figure 2As shown, the driving force receiving member 41 located at the driving end includes a force receiving body 411A and a transmission body 412A that are coupled together. The force receiving body 411A is used to receive driving force from outside the developing cartridge 1 (e.g., imaging equipment, force application tools used by the user, etc.), and the transmission body 412A is used to transmit the driving force. Specifically, the transmission body 412A can transmit the driving force to at least one or more of the developing unit driving member, the powder feeding unit driving member, and the stirring unit driving member. Preferably, the transmission body 412A can be configured as a gear. More preferably, the force receiving body 411A and the transmission body 412A can be integrally formed.

[0038] Furthermore, the housing 2 has a left surface facing left, a right surface facing right, and a left end cover 27 and a right end cover 28 respectively connected to the housing 2, wherein the left end cover 27 is opposite to the left surface, and the right end cover 28 is opposite to the right surface, and at least a portion of the driving force receiving member 41 is exposed outward from the left end cover 27; at the same time, the developing member 31 also includes a first developing member gear 421A, which is sleeved on the end of the developing roller shaft 311A ​​near the driving end; the powder feeding member includes a first powder feeding member gear 431A, which is sleeved on the end of the powder feeding member shaft near the driving end; the stirring member 33 includes a first stirring member gear 441A, which is sleeved on the end of the stirring member shaft near the driving end.

[0039] Please continue to refer to Figure 2 In this embodiment, when the conveyor 412A is configured as a gear, the conveyor 412A may include a first conveyor gear 4121A and a second conveyor gear 4122A that mesh with or are integrally formed with each other, wherein, referring to Figure 1 and Figure 2 Along the left-right direction, the force-receiving body 411A, the first transmission gear 4121A, and the second transmission gear 4122A are arranged sequentially from left to right. More specifically, the first transmission gear 4121A is located between the force-receiving body 411A and the second transmission gear 4122A. The first transmission gear 4121A is used to directly connect to and mesh with the first developing element gear 311A ​​to achieve the purpose of transmitting driving force to the developing element 31. At the same time, the second transmission gear 4122A is used to directly or indirectly connect to the first powder feeding element gear 431A and the first stirring element gear 441A to transmit driving force to the powder feeding element and the stirring element.

[0040] In some embodiments, the diameter of the first conveyor gear 4121A can be larger than the diameter of the first developer gear 421A, the diameter of the first powder feeding gear 431A, and the diameter of the first agitator gear 441A, which can increase the transmission ratio between gears, reduce the output speed, and improve the development stability; or, in other embodiments, the diameter of the first developer gear 421A can be larger than the diameter of the first conveyor gear 4121A, the diameter of the first powder feeding gear 431A, and the diameter of the first agitator gear 441A, which can increase the torque of the developer 31 and enhance the uniformity of toner delivery, which is not limited here.

[0041] In some embodiments, along the direction from the drive end to the conductive end of the developing cartridge 1, the projection of the first developing gear 421A and the projection of the first powder feeding gear 431A at least partially overlap; and / or the projection of the first conveying gear 4121A at least partially overlaps with the projection of the first powder feeding gear 431A and the projection of the first stirring gear 441A.

[0042]

Example 2

[0043] Figure 3 This is a schematic diagram of the structure of the hidden end cap of the developing cartridge provided in the second embodiment of this application; Figure 4 for Figure 3 A schematic diagram of the developing cartridge from another perspective; Figure 5 for Figure 3 The diagram shows the structure of the conductive end of the developing cartridge.

[0044] In this embodiment, as Figures 3-5 As shown, when the conveyor 412B is configured as a gear, the conveyor 412B may include a first conveyor gear 4121B and a second conveyor gear 4122B that mesh with each other or are integrally formed, wherein, referring to Figure 3 Along the left-right direction, the force-receiving body 411B, the first conveying gear 4121B, and the second conveying gear 4122B are arranged sequentially from left to right. More specifically, the first conveying gear 4121B is located between the force-receiving body 411B and the second conveying gear 4122B. The first powder feeding gear 431B is sleeved on the powder feeding roller shaft 321B. The first conveying gear 4121B is used to directly connect to and mesh with the first powder feeding gear 431B to achieve the purpose of transmitting driving force to the powder feeding component. At the same time, the second conveying gear 4122B is used to directly or indirectly connect to the first stirring gear 441B to transmit driving force to the stirring component.

[0045] Please continue reading Figures 3-5In this embodiment, the developing cartridge 1 is further provided with a second stirring gear 442B, a first idler wheel 61B, a second idler wheel 62B, a second powder feeding gear 432B, a third idler wheel 63B, and a second developing gear 422B at the conductive end in the first direction. The second developing gear 422B is sleeved on the developing roller shaft 311B, the second stirring gear 442B is sleeved on the stirring shaft 331B, and the second powder feeding gear 432B is sleeved on the powder feeding roller shaft 321B. This allows the driving force received by the first stirring gear 441B to be transmitted to the second stirring gear 422B through the stirring shaft 331B. The powder feeding component has gears at both ends, which can make the powder feeding component uniformly stressed and the powder supply more stable.

[0046] Simultaneously, the first idler wheel 61B meshes with the second stirring gear 422B, the second idler wheel 62B meshes with the first idler wheel 61B and the second powder feeding gear 432B, and the third idler wheel 63B meshes with the second powder feeding gear 432B and the second developing gear 422B. This allows the driving force to flow through the second stirring gear 422B, the first idler wheel 61B, the second idler wheel 62B, the second powder feeding gear 432B, and the third idler wheel 63B, and finally be transmitted to the second developing gear 422B.

[0047] It is understandable that, since the second developing element gear 422B is sleeved on the developing roller shaft 311B, the driving force transmitted to the second developing element gear 422B can drive the developing roller shaft 311B to rotate, thereby achieving the purpose of rotating the developing element 31B, and further improving the design freedom of the developing cartridge. By directly driving the first powder feeding element gear 431B through the driving end and linking the second developing element gear 422B through the third idler wheel 63B at the conductive end, dual-end coordinated transmission is achieved, improving transmission stability and toner delivery uniformity.

[0048] In other embodiments of this application, the conveyor 412B may include only the second conveyor gear 4122B, through which the driving force is transmitted to the first stirring gear 441B, and then to the second end of the developing cartridge 1 via the stirring shaft 331B. The second stirring gear 442B, the first idler wheel 61B, the second idler wheel 62B, the second powder feeding gear 432B, the third idler wheel 63B, and the second developing gear 422B are used to drive the powder feeding component and the developing component 31B to rotate, while also saving the need for the first conveyor gear 4121B and the first powder feeding gear 431B.

[0049] In other embodiments of this application, the gear diameters of the first idler wheel 61B, the second idler wheel 62B, and the third idler wheel 63B may be the same or different, and can be adjusted according to the actual situation.

[0050] In other embodiments of this application, such as Figure 6 As shown, since the stirring shaft 311B can receive driving force at the drive end, compared to Figure 5 In the case of the developer cartridge shown, this embodiment can also omit the second stirring gear 442B, the first idler wheel 61B, and the second idler wheel 62B, retaining only the third idler wheel 63B and simultaneously engaging the second powder feeding gear 432B and the second developer gear 422B, thereby achieving the purpose of rotating the developer roller shaft 331B.

[0051]

Example 3

[0052] Figure 7 This is a schematic diagram of the structure of the hidden end cap of the developing cartridge provided in the third embodiment of this application; Figure 8 for Figure 7 The diagram shows the structure of the conductive end of the developing cartridge.

[0053] In this embodiment, as Figures 7-8 As shown, when the conveyor 412C is configured as a gear, the conveyor 412C may include a first conveyor gear 4121C and a second conveyor gear 4122C that mesh with each other or are integrally formed. The first conveyor gear 4121C is located on the outer side near the left end cover 27, and the second conveyor gear 4122C is located on the inner side away from the left end cover 27. The first conveyor gear 4121C is used to directly connect to and mesh with the first developing element gear 421C to achieve the purpose of transmitting driving force to the developing element 31C. At the same time, the second conveyor gear 4122C is used to directly or indirectly connect to the first powder feeding element gear 431C to transmit driving force to the powder feeding element.

[0054] Please continue reading Figure 7-8 In this embodiment, the developing cartridge 1 is further provided with a second developing gear 422C, a first idler wheel 61C, a second powder feeding gear 432C, a second idler wheel 62C, a third idler wheel 63C, and a second stirring gear 442C at its conductive end in the first direction. The second developing gear 422C is sleeved on the developing roller shaft 311C, so that the driving force received by the first developing gear 421C can be transmitted to the second developing gear 422C through the developing roller shaft 311C. At the same time, the second powder feeding gear 432C is sleeved on the powder feeding roller shaft 321C, so that the driving force received by the first powder feeding gear 431C can be transmitted to the second powder feeding gear 432C through the powder feeding roller shaft 321C.

[0055] It is understood that in this embodiment, the first idler wheel 61C simultaneously engages with the second developing element gear 422C and the second powder feeding element gear 432C, the second idler wheel 62C simultaneously engages with the second powder feeding element gear 432C and the third idler wheel 63C, and the third idler wheel 63C simultaneously engages with the second idler wheel 62C and the second stirring element gear 442C. This allows the driving force to flow through the second developing element gear 422C, the first idler wheel 61C, the second powder feeding element gear 432C, the second idler wheel 62C, and the third idler wheel 63C, and is finally transmitted to the second stirring element gear 442C, thereby driving the stirring element to rotate and stir the developer in the developing cartridge 1.

[0056] As can be seen, in this embodiment, by setting the above-mentioned transmission components, not only can the purpose of rotating the stirring component be achieved, but the degree of freedom of the developing cartridge can also be further improved. In addition, since the second developing component gear 422C and the second powder feeding component gear 432B both have their own driving force from the driving side of the developing cartridge 1, the transmission efficiency of the conductive side of the developing cartridge 1 can also be further improved.

[0057]

Example 4

[0058] Figure 9 This is a schematic diagram of the structure of the hidden end cap of the developing cartridge provided in the fourth embodiment of this application; Figure 10 for Figure 9 The diagram shows the structure of the conductive end of the developing cartridge.

[0059] In this embodiment, as Figures 9-10 As shown, the developing cartridge 1 is provided with a driving force receiving member, a first developing element gear 421D, a first idler gear 61D, and a second idler gear 62D at the driving end in the first direction. The driving force receiving member includes a force-receiving body 411D and a conveying body 412D that are coupled together. When the conveying body 412D is configured as a gear, the conveying body 412D may include a first conveying gear 4121D and a second conveying gear 4122D that are meshed with each other or integrally formed. Referring to... Figure 9 Along the left-right direction, the force-receiving body 411D, the first transmission gear 4121D, and the second transmission gear 4122D are arranged sequentially from left to right. In other words, the first transmission gear 4121D is located between the force-receiving body 411D and the second transmission gear 4122D. The first transmission gear 4121D is used to directly connect to the first idler gear 61D, while the second idler gear 62D connects the first idler gear 61D and the first developing element gear 421D to achieve the purpose of transmitting driving force to the developing element 31D. The transmission of the developing element gear through the two idler gears can buffer the transmission impact, reduce noise, and extend the gear life. At the same time, the second transmission gear 4122D is used to directly or indirectly connect to the first stirring element gear 441D to transmit driving force to the stirring element.

[0060] Please continue reading Figure 9 and Figure 10 In this embodiment, the conductive end of the developing cartridge 1 in the first direction is further provided with a second developing gear 422D, a third idler wheel 63D, and a second powder feeding gear 432D. The second developing gear 422D is sleeved on the developing roller shaft 31D, and the third idler wheel 63D is connected to both the second developing gear 422D and the second powder feeding gear 432D. This allows the driving force to flow through the developing roller shaft 31D, the second developing gear 422D, and the third idler wheel 63D, and finally be transmitted to the second powder feeding gear 432D, thereby driving the powder feeding component to rotate.

[0061]

Example 5

[0062] In this embodiment, as Figure 11 and Figure 12 As shown, when the conveyor 412E is configured as a gear, the conveyor 412E may include a first conveyor gear 4121E and a second conveyor gear 4122E that mesh with each other or are integrally formed. The first conveyor gear 4121E is located on the outer side near the left end cover 27, and the second conveyor gear 4122E is located on the inner side away from the left end cover 27. The first conveyor gear 4121E is used to directly connect to the first powder feeding component gear 431E to transmit the driving force to the powder feeding component. At the same time, the second conveyor gear 4122E is used to directly or indirectly connect to the first stirring component gear 441E to transmit the driving force to the stirring component.

[0063] Please continue to refer to Figure 11 and Figure 12 In this embodiment, the developing cartridge 1 also includes a conveyor belt 80, which is simultaneously encircled by the first powder feeding gear 431E and the first developing gear 421E. This allows the driving force received by the first powder feeding gear 431E to be transmitted to the first developing gear 421E through the conveyor belt 80, thereby driving the developing element 31E to rotate. Furthermore, it saves the need for an idler wheel, thus optimizing the space on the driving end side of the developing cartridge 1 and saving the manufacturing cost of the developing cartridge 1.

[0064]

Example 6

[0065] In this embodiment, as Figure 13As shown, the developing cartridge 1 can be detachably connected to the drum cartridge 2 to form a processing cartridge. The developing cartridge 1 also includes a developer adjustment member 70, which extends from the driving end of the developing cartridge 1 in a first direction to the conductive end and is used to adjust the developer on the developing cartridge. The developer adjustment member 70 also includes an extension 71, which is integrally or separately formed with the developer adjustment member 70. The extension 71 is disposed at the conductive end of the developing cartridge 1 in the first direction and extends toward the electrode of the imaging device and is connected to the electrode of the imaging device. This allows the developer adjustment member 70 to receive power from the imaging device without the need for additional conductive parts, thereby saving materials and costs. Furthermore, by avoiding the use of conductive parts, the volume of the conductive end of the developing cartridge 1 can be optimized.

[0066] In some embodiments, the extension 71 of the developer conditioning member 70 may also be connected to a drum frame electrode disposed on the drum frame 91 of the drum housing 9, thereby enabling the developer conditioning member 70 to receive power from other locations.

[0067] In some embodiments, the extension 71 of the developer conditioning member 70 may also be configured to avoid the developing frame or drum 91.

[0068] In some embodiments, the extension 71 of the developer adjustment member 70 is provided with a bend, thereby optimizing the overall length of the processing cartridge in the longitudinal direction by providing the bend.

[0069]

Example 7

[0070] In this embodiment, as Figure 14 and Figure 15 As shown, when the conveyor 412F is configured as a gear, the conveyor 412F may include a first conveyor gear 4121F and a second conveyor gear 4122F that mesh with each other or are integrally configured. The first conveyor gear 4121F is located on the outer side near the left end cover 27, and the second conveyor gear 4122F is located on the inner side away from the left end cover 27. (It should be noted that the second conveyor gear 4122F is used to directly connect to the first stirring gear 441F to transmit driving force to the first stirring gear 441F.)

[0071] Furthermore, in this embodiment, please continue to refer to... Figure 14 and Figure 15The developing cartridge 1 is also provided with a first idler wheel 61F and a second idler wheel 62F that mesh with each other at the drive end in the first direction. The first idler wheel 61F meshes with the first conveyor gear 4121F and the second idler wheel 62F at the same time, so that the driving force can be transmitted to the first idler wheel 61F. At the same time, since the first idler wheel 61F meshes with the second idler wheel 62F and the second idler wheel 62F meshes with the first developing component gear 421F and the first powder feeding component gear 431F, it is possible to achieve the purpose of driving the developing roller and the powder feeding roller to rotate, while also reducing the size of the first developing component gear 421F and the second powder feeding component gear 431F, so as to improve the component adaptability and reduce the production and manufacturing costs.

[0072] In some embodiments, such as Figure 14 As shown, in the width direction (i.e., the second direction) of the developing cartridge 1, the first idler wheel 61F and the second idler wheel 62F can be located between the first developing element gear 421F and the first conveying element gear 4121F; at the same time, in the height direction (i.e., the third direction) of the developing cartridge 1, the second idler wheel 62F can be located between the first idler wheel 61F and the first powder feeding element gear 431F, thereby making the gear arrangement at the driving end of the developing cartridge 1 more compact, so as to further improve the transmission efficiency of the driving end of the developing cartridge 1 and optimize the volume of the developing cartridge 1.

[0073] In some embodiments, such as Figures 14-16 As shown, the developing cartridge 1 may have a first protrusion 34 and a second protrusion 35 at its driving end in the first direction. A first idler wheel 61F is fitted onto the first protrusion 34, and a second idler wheel 62F is fitted onto the second protrusion 35, thereby achieving the purpose of fixing the first idler wheel 61F and the second idler wheel 62F, and further improving the transmission reliability of the driving end of the developing cartridge 1. Please continue reading... Figures 14-16 In this embodiment, the first protrusion 34 and the second protrusion 35 are respectively provided with a first slot 341 and a second slot 351. The inner side of the left end cover 27 can be provided with a first limiting protrusion 36 corresponding to the first slot 341 and a second limiting protrusion 37 corresponding to the second slot 351. When the left end cover 27 is installed on the housing 2, the first limiting protrusion 36 is inserted into the first slot 341 and the second limiting protrusion 37 is inserted into the second slot 351. This can further improve the overall physical strength of the driving end of the developing cartridge 1, so as to avoid the first protrusion 34 and the second protrusion 35 bending due to excessive stress during operation, which would cause the first idler wheel 61F and the second idler wheel 62F to become misaligned and thus fail to transmit driving force.

[0074] Furthermore, such as Figure 16As shown, in some embodiments, the developer adjustment member 70 extends from the driving end of the developing cartridge 1 in a first direction to the conductive end and is used to adjust the developer on the developing element. The developer adjustment member 70 also includes a conductive sheet-shaped extension 71, which is attached to one side of the conductive end of the developing cartridge 1. One end of the extension 71 is connected to the developer adjustment member 70, and the other end of the extension 71 forms a conductive bend 713 for connecting to the push-pull part 11. It can be understood that the push-pull part 11 mentioned in this embodiment is used to force the developing cartridge 1 to be closer to the drum cartridge 9 when the developing cartridge 1 and the drum cartridge 9 are combined to achieve a better imaging effect. At the same time, the push-pull part 11 in this embodiment can be conductive and can be connected to the drum frame electrode when the developing cartridge 1 and the drum cartridge 9 are combined, so that the developer adjustment member 70 can receive power from the drum frame, thereby eliminating the need for additional conductive parts and saving materials and costs.

[0075] In addition, please continue to refer to Figure 16 In the above embodiment, the extension 71 may have at least two through holes, and the developing cartridge 1 is provided with a third limiting protrusion 38 and a fourth limiting protrusion 39 corresponding to the through holes. The third limiting protrusion 38 and the fourth limiting protrusion 39 extend from the conductive end of the developing cartridge 1 in a direction away from the housing 2. The third limiting protrusion 38 and the fourth limiting protrusion 39 can be integrally formed with the housing 2 or separately formed. When the extension 71 is attached to the conductive end side of the developing cartridge 1, the third limiting protrusion 38 and the fourth limiting protrusion 39 can achieve a limiting effect on the extension 71. At the same time, if Figure 16 As shown, the third limiting protrusion 38 and the fourth limiting protrusion 39 respectively mate with the two through holes of the extension 71. The extension 71 may also be provided with at least one limiting abutment portion (such as...) in the circumferential direction of the through holes. Figure 16 The first limiting abutment portion 711 and the second limiting abutment portion 712 shown are used to abut against the third limiting protrusion 38 and the fourth limiting protrusion 39 respectively to achieve a better limiting effect on the extension portion 71 and further prevent the extension portion 71 from sliding or loosening after installation.

[0076] In some embodiments, the extension 71 may be a torsion spring connected at one end to the developer adjustment member 70 and at the other end to the push member 11.

[0077] In some embodiments, the developing cartridge 1 may be provided with multiple idler wheels at the drive end to achieve the purpose of transmitting driving force, which is not limited here.

[0078] In some embodiments, such as Figure 17 As shown, the extension 71 of the developer conditioning member 70 can be in the form of a conductive sheet, and is disposed at the conductive end of the developer cartridge 1 and connected to the electrode of the developer cartridge 1.

[0079] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0080] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0081] The developing cartridges provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A developing cartridge having opposing conductive ends and driving ends in a left-right direction, the developing cartridge comprising: A developing element, the developing element including a developing roller shaft, which can rotate about a first axis parallel to the left and right directions; and A powder feeding component, comprising a powder feeding roller shaft, is used to feed developer to a developing component; The driving end is characterized by having a driving force receiving component and a first powder feeding gear, and the conductive end is characterized by having a second powder feeding gear, a third idler gear, and a second developing gear. The first and second powder feeding gears are respectively sleeved on both ends of the powder feeding roller shaft, and the second developing gear is sleeved on the developing roller shaft. The driving force receiving component includes: A force-receiving body, the force-receiving body being used to receive driving force from outside the developing cassette; and The first conveying gear is engaged with the force-receiving body, and the first conveying gear meshes with the first powder feeding gear; The third idler gear meshes simultaneously with the second powder feeding gear and the developing gear.

2. The developing cartridge according to claim 1, characterized in that, The developing cartridge includes an extension portion, which is attached to one side of the conductive end of the developing cartridge. The extension portion has at least two through holes, and the developing cartridge has at least two limiting protrusions corresponding to the through holes. The limiting protrusions cooperate with the through holes.

3. The developing cartridge according to claim 2, characterized in that, The through hole is provided with at least one limiting abutment in the circumferential direction, and the limiting abutment abuts against the limiting protrusion.

4. The developing cartridge according to claim 2 or 3, characterized in that, The developing chamber includes a developer adjustment component that extends in a left-right direction and is used to adjust the developer on the developing unit. One end of the extension is connected to the developer adjustment component.

5. The developing cartridge according to claim 2 or 3, characterized in that, The developing cartridge can be detachably connected to the drum housing and installed together in the imaging device. The extension is connected to the electrodes of the imaging device or to the drum frame electrodes disposed on the drum frame of the drum housing.

6. The developing cartridge according to claim 4, characterized in that, The other end of the extension has a conductive bend.

7. The developing cartridge according to claim 6, characterized in that, The extension is a torsion spring.

8. The developing cartridge according to claim 1, characterized in that, The developing chamber includes a developer adjusting member that extends in a left-right direction and is used to adjust the developer on the developing unit. The developer adjusting member also includes an extension portion that is integrally formed with the developer adjusting member.

9. The developing cartridge according to claim 1, characterized in that, The diameter of the first conveyor gear is larger than the diameter of the first powder feeding gear.

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