Developing box

Abstract

The utility model discloses a developing box which comprises a box body used for storing a developing agent, the box body is provided with a first end and a second end which are oppositely arranged in a first direction, the box body is provided with a third end and a fourth end which are oppositely arranged in a second direction, and the first direction and the second direction are crossed; the developing roller can rotate around an axis extending in the first direction, and is positioned at the third end; the gear set is located at the first end and comprises a plurality of rotatable gears; the first driving part is located at the first end, receives external power to rotate and drives at least part of gears in the gear set to rotate, and the rotation axis of the first driving part intersects with the first direction. According to the scheme, the first driving piece receives the power from the drum assembly, or the first driving piece and the second driving piece are arranged to receive the power from the drum assembly and the image forming device at the same time, so that parts on the developing box can receive the power more stably to rotate.

Description

Technical Field

[0001] This application relates to the field of electronic imaging technology, specifically to a developing cartridge. Background Technology

[0002] The developing cartridge is a detachable component widely used in image forming apparatuses, which can be mounted onto the drum assembly within the apparatus. The developing cartridge is equipped with a power receiver (drive unit) that directly engages with the drive head (power output shaft) within the image forming apparatus to receive power and rotate. The power receiver then transmits power to the remaining gears and moving parts on the developing cartridge. In existing technology, the developing cartridge only has one power receiver that directly receives power from the drive head of the image forming apparatus. This power receiver needs to transmit power to multiple components, resulting in unstable power transmission. Utility Model Content

[0003] According to one aspect of the present invention, a developing cartridge is provided, comprising:

[0004] A housing for storing developer, the housing having a first end and a second end disposed opposite to each other in a first direction, and a third end and a fourth end disposed opposite to each other in a second direction, the first direction and the second direction intersecting.

[0005] The developing roller, rotatable about an axis extending in a first direction, is located at the third end;

[0006] A gear set, located at the first end, includes multiple rotatable gears;

[0007] A first driving member, located at the first end, receives external power to rotate and drive at least a portion of the gears in the gear set to rotate.

[0008] The rotation axis of the first driving member intersects the first direction.

[0009] In some embodiments, the developing cartridge is detachably mounted on a drum assembly including the photosensitive drum, the photosensitive drum being provided with a first gear, and the first drive member meshing with the first gear to receive power.

[0010] In some embodiments, the first driving member is a crown gear, and teeth are provided on the end face of the first driving member in the extension direction of the rotation axis of the first driving member.

[0011] In some embodiments, the angle between the rotation axis of the first drive member and the first direction is in the range of 30° to 90°.

[0012] In some embodiments, a second drive member is also included, which receives another external power to rotate about an axis extending in a first direction, in the second direction being further away from the developing roller than the first drive member.

[0013] In some embodiments, the first driving member drives a portion of the gears in the gear set to rotate, and the second driving member drives another portion of the gears in the gear set to rotate.

[0014] In some embodiments, the gear set includes a developing gear that rotates coaxially with the developing roller and receives power from the first driving member to drive the developing roller to rotate together.

[0015] In some embodiments, a rotating element and a detected part are also included, the detected part being located at the second end, the gear set including the rotating element, the rotating element receiving power transmitted by the first driving element to rotate, and the rotating element driving the detected part to move.

[0016] In some embodiments, a stirring rack is also included to stir the developer inside the cartridge, and the gear set further includes a stirring gear that rotates coaxially with the stirring rack and receives power from the second drive member to rotate.

[0017] In some embodiments, in the second direction, the distance between the first drive member and the third end is less than the distance between the first drive member and the fourth end.

[0018] In some embodiments, a storage medium is also included, the storage medium including an electrical contact surface electrically connected thereto, the electrical contact surface being located at the first end.

[0019] The beneficial effects of this utility model are: the first driving member of this solution receives power from the drum assembly, or the first driving member and the second driving member are set to simultaneously receive power from the drum assembly and the image forming apparatus, which enables the components on the developing cassette to receive power and rotate more stably. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the developing cartridge being installed onto the drum assembly in Embodiment 1;

[0021] Figure 2 This is an exploded view of the developing cassette and drum assembly in Embodiment 1;

[0022] Figure 3 This is a schematic diagram of the developing cartridge in Example 1;

[0023] Figure 4This is a structural schematic diagram of the developing cartridge from another angle in Embodiment 1;

[0024] Figure 5 This is a schematic diagram of the structure in Embodiment 1 where the first end conceals the first protective cover;

[0025] Figure 6 This is a schematic diagram of the structure in Embodiment 1 where the transmission assembly receives power from the drum assembly;

[0026] Figure 7 This is an exploded view of the developing cartridge in Example 1;

[0027] Figure 8 This is a schematic diagram of the structure of the second end of the developing cartridge in Example 1;

[0028] Figure 9 This is an exploded view of the first end of the developing cartridge in Example 2;

[0029] Figure 10 This is a schematic diagram of the structure of the first end of the developing cartridge in Example 2;

[0030] Figure 11 This is a schematic diagram of the transmission assembly and rotating component in Embodiment 2;

[0031] Figure 12 This is a schematic diagram of the engagement structure between the transmission component and the gear portion of the photosensitive drum in Embodiment 2;

[0032] Figure 13 This is a schematic diagram of the transmission assembly and rotating component with another structure in Embodiment 2;

[0033] Figure 14 This is an exploded view of the first end of the developing cartridge in Example 3. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0035] It should be noted that the terms "first," "second," etc., 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "fixation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between the components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] In the above description, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0039] In this specification, the left-right direction indicated in the attached drawings is the first direction, the front-back direction indicated in the attached drawings is the second direction, and the up-down direction indicated in the attached drawings is the third direction.

[0040] Example 1:

[0041] like Figures 1-8As shown, the developing cartridge 1 is detachably mounted on the drum assembly 2 of the image forming apparatus. The drum assembly 2 includes a frame 20 and a photosensitive drum 21. The frame 20 supports the developing cartridge 1, and the photosensitive drum 21 is rotatably supported by the frame 20. The rotation axis of the photosensitive drum 21 extends in a first direction. The photosensitive drum 21 receives the developer transferred from the developing cartridge 1 to form an electrostatic latent image. A gear section 22 is provided on the photosensitive drum 21 and rotates coaxially with it. The gear section 22 includes a first gear 221 and a second gear 222. The first gear 221 and the second gear 222 are coaxially arranged, and the second gear 222 is further away from the photosensitive drum 21 (towards the right) than the first gear 221. The first gear 221 is a spur gear, and the second gear 222 is a helical gear. The second gear 222 is used to receive the power output from the image forming apparatus.

[0042] The image forming apparatus is equipped with a detector for detecting the developing cartridge 1. When the developing cartridge 1 is triggered, the detector moves, enabling the image forming apparatus to recognize the developing cartridge 1.

[0043] The developing cartridge 1 includes a cartridge body 10, a transmission assembly, a cover, a detection assembly, and an identification assembly.

[0044] like Figure 3 and Figure 4 As shown, the cartridge 10 has a first end 11 and a second end 12 oppositely arranged in a first direction, a third end 13 and a fourth end 14 oppositely arranged in a second direction, and a fifth end 15 and a sixth end 16 oppositely arranged in a third direction. Developer is stored inside the cartridge 10. A handle 141 is provided at the fourth end 14 of the cartridge 10, allowing the user to pick up the developer cartridge 1 by gripping the handle 141. A guide plate 161 is located at the sixth end 16 of the cartridge 10, extending along the first direction and positioned between the first end 11 and the second end 12. When the developer cartridge 1 is mounted on the drum assembly 2 and both are mounted together in the image forming apparatus, the guide plate 161 is exposed through a placement hole on the drum assembly 2. When the image forming apparatus is in operation, the guide plate 161 is used to guide sheet material (e.g., paper). The protective cover includes a first protective cover 18 and a second protective cover 121. The first protective cover 18 is detachably fixedly installed at the first end 11 of the housing 10, and at least covers the transmission component portion, thus protecting the transmission component. The second protective cover 121 is detachably installed at the second end 12 of the housing 10, and at least covers the component being tested, thus protecting the component being tested.

[0045] like Figure 4As shown, the identification component includes a bracket 17 and a storage medium 171. The storage medium 171 is detachably mounted on the bracket 17. The bracket 17 is provided with a snap fastener, and the bracket 17 is detachably mounted on the first cover 18 or the housing 10 via the snap fastener. The storage medium 17 stores relevant information of the developing cartridge 1 and transmits the relevant information of the developing cartridge 1 to the image forming apparatus. The storage medium 17 includes an electrical contact surface electrically connected thereto, and the electrical contact surface is located at the first end 11.

[0046] like Figure 3 and Figure 7 As shown, the developing cartridge 1 is equipped with a developing roller 131, a powder feeding roller (not shown), and a stirring frame (not shown). The developing roller 131, powder feeding roller, and stirring frame are all rotatably supported by the cartridge body 10, and their rotation axes all extend along a first direction. The powder feeding roller delivers developer to the developing roller 131, which contacts the photosensitive drum 21, transferring the developer to the photosensitive drum 21. The stirring frame is used to stir the developer within the cartridge body 10 to prevent developer clumping. The developing cartridge 1 also includes a powder dispensing blade 132, which controls the thickness of the developer layer on the developing roller 131.

[0047] like Figure 5 and Figure 6 As shown, a transmission assembly is disposed at the first end 11. The transmission assembly includes a first driving member 40 rotatably mounted on the first end 11. The first driving member 40 is used to receive external power. In this embodiment, the first driving member 40 is preferably a gear. The first driving member 40 is rotatably supported by the housing 10. The rotation axis of the first driving member 40 intersects with the first direction. The housing 10 is provided with a first support column extending obliquely relative to the first direction. The first driving member 40 is rotatably supported on the first support column. In this embodiment, the angle between the rotation axis of the first driving member 40 and the first direction is preferably 45° to 90°, and more preferably about 60°. In some embodiments, it can simply intersect with the first direction. The first driving member 40 can be a crown gear, with its teeth protruding from the end face in the extension direction of the rotation axis of the first driving member 40. The first driving member 40 includes a first receiving gear and a first transmitting gear. The first receiving gear is located on one end face of the first driving member 40 in the axial direction, and the first transmitting gear is located on the other end face of the first driving member 40 in the axial direction. With the developing cartridge 1 installed in the drum assembly 2, the first receiving gear of the first driving member 40 meshes with the first gear 221 on the photosensitive drum 21. When the first gear 221 rotates, the first driving member 40 rotates along with the first gear 221. That is, in this embodiment, the external power of the transmission component comes from the drum assembly 2.

[0048] like Figure 5 and Figure 6As shown, the transmission assembly also includes a developing gear 41, a powder feeding gear 42, a stirring gear 43, and an idler wheel 45. The developing gear 41 is fixedly mounted on the end of the developing roller 131 near the first end 11 in the first direction. The developing gear 41 meshes with the first receiving gear of the first driving member 40 to receive the power transmitted by the first driving member 40 and drive the developing roller 131 to rotate together. The powder feeding gear 42 is coaxially fixedly mounted on the end of the powder feeding roller near the first end 11 and rotates together with the powder feeding roller. The stirring gear 43 is coaxially fixedly mounted on the end of the stirring frame near the first end 11 and rotates together with the stirring frame. The idler wheel 45 is rotatably disposed at the first end 11. The rotation axis of the idler wheel 45 is parallel to the first direction. In this embodiment, multiple idler wheels 45 are provided. These multiple idler wheels 45 can be the same or different, or the rotation axes of some of the multiple idler wheels 45 can intersect the first direction, depending on actual needs. The idler gear 45 meshes with the first transmission gear and transmits power to the developing gear 41, the powder feeding gear 42, and the stirring gear 43. In some embodiments, the first drive member 40 may directly mesh with the developing gear 41, the powder feeding gear 42, and the stirring gear 43. The first drive member 40 drives at least one gear located at the first end 11 in the developing cartridge 1.

[0049] When the developing cartridge 1 is installed on the drum assembly 2, the photosensitive drum 21 and the gear section 22 rotate together. At the same time, the first receiving gear of the first driving member 40 meshes with the first gear 221 in the gear section 22 and rotates with the gear section 22. The first transmission gear transmits power to the developing gear 41 and other gears, so that the developing roller 131 and the photosensitive drum 21 have the same power source and rotate synchronously to make the transfer of developer more stable.

[0050] like Figure 7 As shown, the developing cartridge 1 also includes a top cover 152, located at the fifth end 15 of the cartridge body 10. The top cover 152 includes a positioning post 1522, a guide groove 1523, and a first mounting buckle 1524. The positioning post 1522 is a cylindrical protrusion projecting upward in a third direction. The guide groove 1523 is a curved groove recessed in a third direction, extending in a second direction away from the developing roller 131.

[0051] like Figure 4 and Figure 7As shown, the first cover 18 is detachably fixed to the first end 11 of the housing 10. The first cover 18 includes a first guide 181 and a first pusher 182. The first guide 181 is disposed on the outer surface of the first cover 18 away from the first end 11. The first guide 181 is a cylindrical protrusion protruding to the right in a first direction. The first guide 181 is used to guide the developing cartridge 1 to be smoothly installed onto the drum assembly during the installation process. The first pusher 182 is located at the rear end of the first cover 18. The first pusher 182 protrudes in the direction away from the developing roller 131. The first pusher 182 is used to receive the pushing force applied by the drum assembly to the developing cartridge 1, so that the developing roller 131 is in close contact with the photosensitive drum 21. The first cover 18 also includes a trigger portion, which is located on the inner side of the cover 18 near the first end 11. The trigger portion is an irregular annular protrusion protruding in the direction near the first end 11. The trigger portion includes a plurality of trigger protrusions spaced apart along the circumference. The trigger protrusions are all arc-shaped protrusions extending in the direction near the first end 11 along the first direction and located on the circumference of the same circle. The central angles of the plurality of trigger protrusions can be the same or different. Each of the plurality of trigger protrusions is provided with a slope that is inclined relative to the first direction. In this embodiment, it is preferred that there are three trigger protrusions, namely a first trigger protrusion, a second trigger protrusion and a third trigger protrusion.

[0052] like Figure 4 As shown, the first cover 121 also includes a locking member 180, which is a protrusion protruding in the direction away from the developing roller 131. The locking member 180 is used to be locked by a locking member on the drum assembly 2 to prevent the developing cartridge 1 from disengaging from the drum assembly 2.

[0053] like Figure 7 and Figure 8 As shown, the second cover 121 is located at the second end of the housing 10. The second cover 121 includes a first connecting post 1211 and a second pushing part 1212. The first connecting post 1211 protrudes in a first direction, and the second pushing part 1212 protrudes in a direction away from the developing roller 131. The second pushing part 1212 has the same function as the first pushing part 182. In other embodiments, only one pushing part may be provided.

[0054] The component being tested includes a rotating part 3 and a transmission rod. The rotating part 3 receives power transmitted from the transmission assembly and rotates, driving the transmission rod to move.

[0055] like Figure 5 and Figure 7As shown, the rotating member 3 is preferably a gear and is disposed at the first end 11. The rotating member 3 is rotatably supported by the first cover 18 and can move relative to the first cover 18 in a first direction. The rotating member 3 includes a meshing part 31, a mounting hole 36, and a first abutment block 37. The meshing part 31 is used to mesh with the stirring gear 43 to receive power and rotate. The meshing part 31 includes a toothed part and a missing toothed part. That is, when the toothed part of the stirring gear 43 is opposite to it, the rotating member 3 meshes with the stirring gear 43 and rotates with the stirring gear 43; when the missing toothed part is opposite to the stirring gear 43, the rotating member 3 disengages from the stirring gear 43 and does not rotate with the stirring gear 43. That is, in this embodiment, all gears except the first driving member 40 can be regarded as forming a gear set. The first driving member 40 receives external power and causes the gear set to rotate.

[0056] The mounting hole 36 is a circular hole penetrating the rotating member 3 in a first direction. A support post on the first cover 18 is inserted into the mounting hole 36 to support the rotating member 3. In some embodiments, the rotating member 3 can also be directly supported by the housing 10. The first abutment block 37 is located radially inside the engagement portion 31. The first abutment block 37 protrudes radially and extends in the first direction. The first abutment block 37 is used to interact with the trigger portion on the first cover 18. When the first abutment block 37 abuts against a plurality of trigger protrusions, the rotating member 3 has a first position in the first direction. When the first abutment block 37 is located at the interval between the plurality of trigger protrusions, the rotating member 3 has a second position in the first direction. In the first direction, the first position is closer to the first end 11 than the second position.

[0057] like Figure 7 and Figure 8As shown, the transmission rod is preferably a swing rod 5, which includes a force-receiving end 51, a detection end 52, a positioning hole 53, a guided protrusion 54, a first arm 55, and a second arm 56. The positioning hole 53 is a circular hole penetrating the swing rod 5 in a third direction. The positioning hole 53 cooperates with the positioning post 1522 to allow the swing rod 5 to be rotatably mounted. The force-receiving end 51 is located at the right end of the swing rod 5 in a first direction. The force-receiving end 51 is used to be abutted by the rotating member 3, causing the swing rod 5 to swing around the positioning hole 53 as the swing point. The swing direction of the swing rod 5 intersects with the first direction. The detection end 52 is located at the left end of the swing rod 5 in the first direction. The detection end 52 is exposed through the through hole of the second cover 121. The detection end 52 (detected part) is used to trigger the detection member in the image forming apparatus, so that the developing cartridge 1 is detected by the image forming apparatus. When the rotating member 3 is in the first position, the detected end 52 is in the detection position. When the rotating member 3 is in the second position, the detected end 52 is in the non-detection position. The detected end 52 swings between the detection position and the non-detection position. In the second direction, the detection position is closer to the developing roller 131 than the non-detection position. The detected end 52 is also provided with a second connecting post 521 extending in the first direction. In the second direction, the first connecting post 1211 and the second connecting post 521 are arranged one in front of the other.

[0058] like Figure 7 As shown, the guided protrusion 54 is a protrusion that protrudes upward in a third direction. When the swing arm 5 is installed on the upper cover 152, the guided protrusion 54 is located in the guide groove 1523. When the swing arm 5 swings, the guided protrusion 54 moves in the guide groove 1523. The guided protrusion 54 is used to ensure the movement trajectory of the swing arm 5, so that the detected end 52 moves to the detection position.

[0059] like Figure 7 As shown, the developing cartridge 1 also includes a cover plate 151. The cover plate 151 is located above the upper cover 152 in the third-side upward direction. The cover plate 151 is provided with a second mounting buckle 1511 or a mounting through hole that cooperates with the first mounting buckle 1524. The cover plate 151 is detachably installed on the upper cover 152 and covers at least part of the swing arm 5. The cover plate 151 plays a protective role for the swing arm 5.

[0060] like Figure 7 and Figure 8 As shown, the developing cartridge 1 also includes a first elastic element 155 and a second elastic element 156. In this embodiment, the first elastic element 155 is preferably a tension spring. One end of the first elastic element 155 is connected to the first connecting post 1211, and the other end is connected to the second connecting post 521. When the detected end 52 is in the detection position, the first elastic element 155 is in a stretched state and has elastic force. The first elastic element 155 is used to apply elastic force to the detected end 52 so that the detected end 52 moves from the detection position to the non-detection position. That is, the first elastic element 155 is the first reset element.

[0061] The second elastic element 156 is preferably a compression spring, located between the rotating member 3 and the housing 10. The second elastic element 156 can be compressed and extended in the first direction. The second elastic element 156 is used to drive the rotating member 3 to move from the first position to the second position. That is, the second elastic element 156 is a second reset element.

[0062] When the first drive member 40 does not receive power from the drum assembly 2, the rotating member 3 meshes with the stirring gear 43, the first abutting block 37 abuts against the first trigger protrusion and is in the first position, the rotating member 3 is in abutting state with the rocker arm 5, and the detected end 52 is in the detection position and in contact with the detection element in the image forming apparatus, which is the first trigger. The first elastic member 155 is in a stretched state due to the detected end 52, and the second elastic member 156 is in a compressed state due to the abutment of the rotating member 3.

[0063] When the first drive member 40 receives the power output from the drum assembly 2 and starts to rotate, it drives the entire transmission assembly to rotate. The rotating member 3 follows the stirring gear 43 and starts to rotate. During the process of the first abutting block 37 abutting against the first trigger protrusion, the rotating member 3 is always in the first position in the first direction, and the detected end 52 is located in the detection position.

[0064] As the rotating member 3 continues to rotate, the first abutting block 37 disengages from the first trigger protrusion. The rotating member 3, under the elastic force of the second elastic member 166, moves to the right in the first direction. The first abutting block 37 is positioned at the interval between the first and second trigger protrusions, and the rotating member 3 is in the second position. The first elastic member 155 drives the swing arm 5 to swing, with the force-bearing end 51 swinging towards the developing roller 131, and the detected end 52 swinging away from the developing roller 131 from the detection position to the non-detection position.

[0065] The rotating component 3 continues to rotate, and the first abutting block 37 abuts against the inclined surface of the second trigger protrusion, causing the rotating component 3 to move to the left in the first direction to the first position. The rotating component 3 drives the swing arm 5 to swing, and the force-bearing end 51 swings away from the developing roller 131. The detected end 52 moves from the non-detection position to the detection position in the direction closer to the developing roller 131 and triggers the detection component, which is the second trigger. The first elastic element 155 and the second elastic element 156 accumulate elastic force.

[0066] The subsequent contact process is similar to the first triggering protrusion, and will not be described in detail here.

[0067] The missing tooth portion of the rotating component 3 is opposite to the stirring gear 43, and the rotating component 3 no longer rotates with the stirring gear 43. The rotating component 3 remains in contact with the rocker arm 5, and the detected end 52 is located in the detection position and remains in contact with the detected component, thus the image forming apparatus completes the identification of the developing cartridge 1.

[0068] In one embodiment, the rotating member 3 transmits power to the detected part through multiple rotating gears.

[0069] In another embodiment, the component being tested and the gear that drives the power to the component being tested may not be provided.

[0070] like Figure 8 As shown, the second end 12 is also provided with a second bearing 122, which is used to support the developing roller 131 and the powder feeding roller at one end near the second end 12 in the first direction. The second bearing 122 is provided with a second guide 1221, which is used to guide the installation of the developing cartridge 1 during the installation of the developing cartridge 1 to the drum assembly 2.

[0071] The second end 12 is also provided with an electrode 123, which is supported by the second bearing 122. The electrode 123 is used to receive electrical energy output from the image forming apparatus. After receiving the electrical energy output from the image forming apparatus, the electrode 123 transmits the electrical energy to the developing roller 131 and the powder feeding roller, so that the developing roller 131 and the powder feeding roller are charged to adsorb the developer.

[0072] like Figure 8 As shown, the second end 12 is also provided with a powder filling port 124, which penetrates the side wall of the second end 12 in the first direction, and the developer can be poured into the cartridge 10 through the powder filling port 124. In order to prevent developer leakage, a matching sealing cap is provided at the powder filling port 124.

[0073] Example 2:

[0074] Unless otherwise specified, this embodiment has the same structure as Embodiment 1. The difference between this embodiment and Embodiment 1 lies in the structure of the transmission component.

[0075] like Figures 9-12As shown, the transmission assembly in this embodiment includes a first driving member 40, a second driving member 44, a developing gear 41, a powder feeding gear 42, a stirring gear 43, and an idler wheel. The first driving member 40 and the second driving member 44 are used to receive external power. In the second direction, the second driving member 44 is further away from the developing roller 131 than the first driving member 40. The first driving member 40 is preferably a crown gear. The rotation axis X of the first driving member 40 intersects the first direction, and the angle A between the two is 45° to 90°, further 55° to 65°. In this embodiment, 58° or 60° is preferred. A first support column 101 is provided at the first end 11, which protrudes obliquely relative to the first direction. The first driving member 40 is rotatably supported by the first support column 101. In the second direction, the distance between the first driving member 40 and the third end 13 is less than the distance between the first driving member 40 and the fourth end 14. The first driving member 40 meshes with the first gear 221 on the photosensitive drum 21. When the first gear 221 rotates, the first driving member 40 rotates with the first gear 221. That is, the power of the first driving member 40 comes from the drum assembly 2.

[0076] like Figures 9-12 As shown, in this embodiment, the idler wheels include a first idler wheel 45a, a second idler wheel 46, a third idler wheel 47, a fourth idler wheel 48, and a fifth idler wheel 49, which are connected sequentially. In the second direction, the first idler wheel 45a is further away from the fourth end 14 than the other idler wheels. The first idler wheel 45a meshes with the first driving member 40 to rotate with the first driving member 40, and the axis of rotation of the first idler wheel 45a extends in the first direction. The first idler wheel 45a transmits power sequentially to the second idler wheel 46, the third idler wheel 47, the fourth idler wheel 48, and the fifth idler wheel 49 to make them rotate. The fifth idler wheel 49 meshes with the stirring gear 43 to transmit power to the stirring gear 43, which in turn transmits power to the rotating member 3, thereby causing the rotating member 3 to drive the rocker arm 5 to move. This embodiment does not limit the number of idler wheels or the meshing relationship between gears and can be set according to actual needs.

[0077] like Figures 9-12As shown, the second drive member 44 is rotatably supported by the housing 10, and its axis of rotation extends in a first direction. The second drive member 44 is used to receive the power output from the image forming apparatus (another external power source) and transmit the power to the developing gear 41 and the powder feeding gear 42. The second drive member 44 includes a power receiving part 441 and a transmission gear 442. In the first direction, the power receiving part 441 is further away from the first end 11 than the transmission gear 442. The power receiving part 441 is used to connect with the power output shaft in the image forming apparatus and rotate. The transmission gear 442 meshes with the developing gear 41 and the powder feeding gear 42 to follow the rotation of the second drive member 44 when the second drive member 44 rotates, thereby realizing the rotation of the developing roller 131 and the powder feeding roller. That is, in this embodiment, the gears other than the first drive member 40 and the second drive member 44 are regarded as a gear set. The first drive member 40 drives some of the gears in the gear set to rotate, and the second drive member 44 drives another part of the gear set to rotate.

[0078] like Figure 9 As shown, the first cover 18 is provided with a hole 187 and a protective portion 188. The hole 187 protects the second drive member 44 while allowing the power receiving portion 441 to be exposed so that the power receiving portion 441 can engage with the power output shaft. The protective portion 188 is crescent-shaped and at least partially covers the first drive member 40 to protect it.

[0079] In this embodiment, the developing cartridge 1 is provided with two driving components that receive external power. The first driving component 40 receives the power transmitted from the drum assembly 2 and transmits the power to the stirring rack and the component being tested. The second driving component 44 receives the power output from the power output shaft on the image forming apparatus and drives the developing gear 41 and the powder feeding gear 42 to rotate. Since the rotation of the developing roller 131 and the powder feeding roller will be subject to a certain resistance and thus consume a certain amount of power, this structure can reduce the resistance encountered by the first driving component 40 when rotating, and ensure that the first driving component 40 can stably transmit power to the component being tested.

[0080] In another embodiment, the first idler wheel 45a, the second idler wheel 46, the third idler wheel 47, and the fourth idler wheel 48 rotate by receiving power transmitted from the first driving member 40. The fifth idler wheel 49 meshes with the transmission gear 442 to receive power and simultaneously meshes with the stirring gear 43 to transmit power. That is, in this embodiment, the rotational power of the stirring gear 43 comes from the second driving member 44, thereby further reducing the resistance encountered by the first driving member 40 during rotation. Alternatively, the stirring gear 43 may directly mesh with the transmission gear 442.

[0081] like Figure 13As shown, a sixth idler wheel 430 is rotatably mounted at the first end 11. The sixth idler wheel 430 is coaxially mounted with the stirring gear 43. In this embodiment, the stirring gear 43 preferably supports the sixth idler wheel 430, but the stirring gear 43 does not apply any power to the sixth idler wheel 430, that is, no power is transmitted between them. Alternatively, the box body 10 or the first cover 18 can rotatably support the sixth idler wheel 430. The sixth idler wheel 430 is a two-stage gear. The sixth idler wheel 430 meshes with the fourth idler wheel 48 to receive power, and at the same time, the sixth idler wheel 430 meshes with the rotating component 3 to transmit power.

[0082] Example 3:

[0083] Unless otherwise specified, the structure of this embodiment is the same as that of Embodiment 2. The difference between this embodiment and Embodiment 2 lies in the structure of the transmission component.

[0084] like Figure 14 As shown, the first driving member 40 is a crown gear. The rotation axis of the first driving member 40 intersects with the first direction. Preferably, the intersection angle is 30° to 90°. In this embodiment, it is preferably 60°. The first driving member 40 is used to receive external power and rotate. Furthermore, the first driving member 40 meshes with the first gear 221 to receive power.

[0085] like Figure 14 As shown, the transmission assembly includes a first idler gear 49, which comprises a first part 491 and a second part 492. In a first direction, the first part 491 is further away from the sidewall of the first end 11 than the second part 492. The first part 491 is a spur gear, which meshes with the first drive member 40 to receive power and rotate. The second part 492 is a helical gear, which meshes with the developing gear 41 to rotate the developing gear 41, thereby causing the developing roller 131 to rotate. That is, in this embodiment, the first drive member 40 receives power transmitted by the gear part 22 and rotates, meaning that the developing roller 131 and the photosensitive drum 21 have the same power source, thus ensuring that their rotation is synchronized, allowing the developing roller 131 to more stably deliver developer to the photosensitive drum 21. The remaining gears in the transmission assembly receive power transmitted by the second drive member 44 and rotate.

[0086] In some embodiments, the powder feeding gear 42 may also mesh with the first idler gear 49 to receive power and rotate.

[0087] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A developing cartridge comprising: a cartridge body for storing a developer, the cartridge body having a first end and a second end disposed opposite each other in a first direction, and a third end and a fourth end disposed opposite each other in a second direction, the first direction and the second direction intersecting each other; a developing roller rotatable about an axis extending in the first direction, the developing roller being located at the third end; a gear set located at the first end, the gear set including a plurality of rotatable gears; a first driving member located at the first end, the first driving member being rotatable by receiving an external power and driving at least some of the gears of the gear set to rotate. The first driving member has a rotational axis intersecting the first direction.

2. The process cartridge according to claim 1, wherein: The developing cartridge is detachably mounted on a drum assembly including the photosensitive drum, the photosensitive drum having a first gear disposed thereon, the first driving member engaging the first gear to receive the power.

3. The process cartridge of claim 2, wherein: The first driving member is a crown gear, the first driving member having a tooth disposed on an end surface of the first driving member in an extension direction of the rotational axis of the first driving member.

4. The process cartridge of claim 2 wherein: The first driving member has a rotational axis intersecting the first direction.

5. The process cartridge of claim 1, wherein: The developing cartridge further includes a second driving member, the second driving member being rotatable about an axis extending in the first direction by receiving another external power, the second driving member being located further from the developing roller than the first driving member in the second direction.

6. The process cartridge of claim 5 wherein: The first driving member drives some of the gears of the gear set to rotate, and the second driving member drives another some of the gears of the gear set to rotate.

7. The process cartridge of claim 6, wherein: The gear set includes a developing gear coaxially rotatable with the developing roller, the developing gear being driven to rotate by the first driving member.

8. The process cartridge of claim 6, wherein: The developing cartridge further includes a rotating member and a detected portion, the detected portion being located at the second end, the gear set including the rotating member, the rotating member being rotatable by receiving the power from the first driving member, the rotating member driving the detected portion to move.

9. The process cartridge of claim 6 wherein: The developing cartridge further includes a stirring frame for stirring the developer in the cartridge body, the gear set further including a stirring gear coaxially rotatable with the stirring frame, the stirring gear being rotatable by receiving the power from the second driving member.

10. The process cartridge of claim 1, wherein: In the second direction, a distance between the first driving member and the third end is smaller than a distance between the first driving member and the fourth end.

11. The process cartridge of claim 1, wherein: The developing cartridge further includes a storage medium including an electrical contact surface electrically connected thereto, the electrical contact surface being located at the first end.

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