Developing box

Abstract

The utility model discloses a developing box, which is detachably mounted in an image forming device together with a drum assembly, and comprises a box body for storing a developing agent, a developing roller arranged on the box body, a driving part arranged at one end of the box body, a forced pushing part enabling the developing roller to be attached to a photosensitive drum, and an identification assembly for storing information of the developing box, the identification assembly comprises a storage medium and an electric contact surface, and transmits information of the developing box into the image forming device; the electric contact surfaces are arranged along a specific direction, a first line in the direction is L1, a second line penetrating through a force bearing point of the forced pushing piece for receiving the forced pushing force and the center of the developing roller is L2, a preset included angle a is formed between L1 and L2, and the value range of the preset included angle a is more than or equal to 0 degree and less than or equal to 60 degrees. By means of the structure, the storage medium can move relative to the developing box, and it is guaranteed that the electric contact faces can make stable contact with the electric contact pins. And the phenomenon of poor contact caused by deviation or separation of the electric contact surface and the electric contact pin due to movement of the storage medium along with the developing box is prevented.

Description

Technical Field

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

[0002] A developing cartridge is a detachable part widely used in an image forming apparatus. After the printing consumables of the image forming apparatus are consumed, a new developing cartridge needs to be replaced. The developing cartridge is provided with a storage medium for storing relevant information of the developing cartridge. When the developing cartridge is installed on the image forming apparatus, the electrical contact pins on the image forming apparatus come into contact with the storage medium so that the information in the chip can be read by the image forming apparatus, thereby enabling the image forming apparatus to identify the developing cartridge.

[0003] Most of the existing storage media are fixedly installed at one end of the developing cartridge. When the developing cartridge is separated from the drum roller of the drum assembly, the storage medium moves with the developing cartridge, resulting in poor contact caused by the offset or disconnection of the electrical contact surface and the electrical contact pins, so that the image forming apparatus cannot identify the developing cartridge. Summary of the Utility Model

[0004] In order to solve the technical problems existing in the prior art, the purpose of the utility model is to provide a developing cartridge to solve the above technical problems.

[0005] A developing cartridge can be detachably installed on a drum assembly having a photosensitive drum, and can be detachably installed together with the drum assembly into an image forming apparatus having electrical contact pins. The developing cartridge includes:

[0006] A cartridge body for storing a developer. The cartridge body has a first end and a second end disposed opposite to each other in a first direction, a third end and a fourth end disposed opposite to each other in a second direction, and a fifth end and a sixth end disposed opposite to each other in a third direction;

[0007] A developing roller is disposed at the third end of the cartridge body and can rotate around an axis extending in the first direction;

[0008] A driving part is disposed at the first end of the cartridge body for receiving a driving force input by the image forming apparatus;

[0009] A pushing component can receive a pushing force applied by the drum assembly when the developing cartridge is installed on the drum assembly, so that the developing roller is attached to the photosensitive drum;

[0010] An identification component for storing information of the developing cartridge. The identification component includes a storage medium having a plurality of electrical contact surfaces. The storage medium stores information of the developing cartridge, and the storage medium can be electrically connected to the electrical contact pins through the electrical contact surfaces, so as to transmit the information of the developing cartridge stored in the storage medium into the image forming apparatus;

[0011] A plurality of electrical contact surfaces are arranged along a specific direction. The first line in this direction is L1, and the second line passing through the force-receiving point of the pushing member to receive the pushing force and the center of the developing roller is L2. A preset angle a is formed between L1 and L2, and the value range of the preset angle a satisfies: 0° ≤ a ≤ 60°.

[0012] In one embodiment, the developing cartridge further includes a separating component. The separating component can receive the separating force applied by the image forming device and force the developing cartridge to move relative to the drum component. The arrangement direction of the plurality of electrical contact surfaces is the same as the direction in which the developing cartridge moves relative to the drum component after receiving the separating force.

[0013] In one embodiment, the separating component is arranged at both ends or one end of the cartridge body in the first direction. When the developing cartridge receives the separating force, it can move relative to the drum component in the second direction or the third direction, so that the developing roller is separated from the photosensitive drum.

[0014] The third line in the direction of the developing cartridge moving relative to the drum component after receiving the separating force is L3. A preset angle b is formed between L3 and L1, and the value range of the preset angle b satisfies: 0° ≤ a ≤ 45°.

[0015] In one embodiment, the storage medium and the separating component are arranged at the same end of the cartridge body in the first direction. When the developing cartridge receives the separating force and moves relative to the drum component in the second direction or the third direction, the storage medium can move relative to the cartridge body in the third direction or the first direction.

[0016] In one embodiment, the storage medium is arranged at one end of the cartridge body, and the separating component is arranged at the other end of the cartridge body in the first direction opposite to the storage medium. When the developing cartridge receives the separating force and moves relative to the drum component in the second direction or the third direction, the storage medium moves together with the cartridge body.

[0017] In one embodiment, the developing cartridge further includes an electrode. The electrode is connected to the developing roller and can be electrically connected to the image forming device to supply power to the developing roller. In the first direction, at least part of the electrode overlaps with part of the identification component.

[0018] In one embodiment, the electrode is divided into a first electrode and a second electrode. The developing cartridge further includes a first bearing, the identification component further includes a first bracket, the storage medium is arranged on the first bracket, and the first bearing and the first bracket are made of insulating materials. The first electrode and the second electrode are separated by the first bearing in the first direction.

[0019] In one embodiment, the developing cartridge further includes a connecting member. The storage medium and the electrical contact surface are separately arranged, and the storage medium is connected to the electrical contact surface through the connecting member.

[0020] In one embodiment, the electrical contact surface can be arranged at the first end of the cartridge body or at the second end of the cartridge body.

[0021] In one embodiment, the normal line passing through the plurality of electrical contact surfaces is parallel to the first direction or parallel to the third direction.

[0022] In one embodiment, the developing cartridge further includes a detected member disposed at the second end of the cartridge body. The detected member can move along with the rotation of the driving portion, so as to cooperate with the image forming apparatus to enable the developing cartridge to be detected by the image forming apparatus.

[0023] In one embodiment, the developing cartridge further includes a load-bearing portion symmetrically disposed along the first direction at the first end and the second end of the developing cartridge. When the developing cartridge cooperates with the drum assembly, the load-bearing portion contacts the drum assembly to support the weight of the developing cartridge.

[0024] Advantageous effects of the present utility model:

[0025] The developing cartridge includes a cartridge body for storing a developer, a developing roller disposed on the cartridge body, a driving portion disposed at one end of the cartridge body, a pressing assembly for making the developing roller fit with the photosensitive drum, and an identification assembly for storing information of the developing cartridge. The identification assembly includes a storage medium and electrical contact surfaces for transmitting the information of the developing cartridge into the image forming apparatus; the electrical contact surfaces are arranged along a specific direction. The first line in this direction is L1, and the second line passing through the force receiving point of the pressing member receiving the pressing force and the center of the developing roller is L2. A preset angle a is formed between L1 and L2, and the value range of the preset angle a satisfies: 0° ≤ a ≤ 60°. With the above structure, the storage medium can move relative to the developing cartridge, ensuring that the electrical contact surfaces and the electrical contact pins can be stably contacted. It prevents the phenomenon of poor contact caused by the deviation or detachment of the electrical contact surfaces and the electrical contact pins due to the movement of the storage medium along with the developing cartridge. Description of the drawings

[0026] Figure 1 is a schematic structural diagram of the developing cartridge installed on the drum assembly in the first embodiment;

[0027] Figure 2 is a schematic structural diagram of the drum assembly in the first embodiment;

[0028] Figure 3 is a schematic structural diagram of the developing cartridge in the first embodiment;

[0029] Figure 4 is a schematic structural diagram of the transmission assembly in the first embodiment;

[0030] Figure 5 is a schematic structural diagram of the second end of the cartridge body with the second protective cover hidden in the first embodiment;

[0031] Figure 6 is a schematic structural diagram of another perspective of the developing cartridge in the first embodiment;

[0032] Figure 7It is an exploded view of the identification component in the first embodiment;

[0033] Figure 8 It is a cross-sectional view of the first end in the first embodiment;

[0034] Figure 9 It is a schematic structural diagram of the identification component installed at the second end of the developing cartridge in the second embodiment;

[0035] Figure 10 It is an exploded view of the second end of the developing cartridge in the second embodiment;

[0036] Figure 11 It is a schematic structural diagram of the identification component installed at the first end of the developing cartridge in the second embodiment;

[0037] Figure 12 It is an exploded view of the second end of the developing cartridge in the third embodiment;

[0038] Figure 13 It is a schematic structural diagram of the developing cartridge in the fourth embodiment;

[0039] Figure 14 It is a side view of the second end of the developing cartridge in the fourth embodiment;

[0040] Figure 15 It is a schematic structural diagram of the developing cartridge in the fifth embodiment;

[0041] Figure 16 It is a side view of the second end of the developing cartridge in the fifth embodiment;

[0042] Figure 17 It is a schematic structural diagram of the drum assembly in the fifth embodiment;

[0043] Figure 18 It is a cross-sectional view of the developing cartridge and the drum assembly in the fifth embodiment.

[0044] Wherein: 1. Developing cartridge; 10. Cartridge body; 11. First end; 111. First cover; 1111. First movable hole; 1112. Second movable hole; 112. First guiding member; 113. First separating member; 114. Third separating member; 115. First load-bearing protrusion; 116. Second load-bearing protrusion; 12. Second end; 121. Second cover; 1211. Through hole; 122. Second guiding member; 123. Second separating member; 124. Third electrode; 125. Powder filling port; 13. Third end; 131. Developing roller; 14. Fourth end; 141. Handle; 142. First pushing member; 143. Second pushing member; 15. Fifth end; 16. Sixth end;

[0045] 2. Drum assembly; 21. Frame; 22. Photosensitive drum; 231. First force-applying member; 232. Second force-applying member; 24. Contact portion;

[0046] 31. Storage medium; 311. Electrical contact surface; 32. First bracket; 321. Installation part; 322. Fitting port; 323. First protrusion; 324. Second protrusion; 325. First mounting post; 33. Second bracket; 331. Insertion part; 332. Third moving hole; 34. Pawl part; 341. Contact part; 343. Second mounting post; 35. Elastic member; 36. Third bracket

[0047] 40. Power receiving part; 41. Developing gear; 42. Powder feeding gear; 431. Large-diameter driving gear; 432. Small-diameter driving gear; 441. Large-diameter first idler gear; 442. Small-diameter second idler gear; 45. Stirring gear; 46. Transmission gear; 47. Component to be detected; 471. Meshing part; 472. Part to be detected; 48. Bearing, 481. Shaft part; 4811. Electrical receiving part; 482. Main body part; 483. Bracket part; 484. Installation groove; 49. Component to be detected; 491. Meshing part; 492. Part to be detected

[0048] 51. First electrode; 511. First electrical receiving part; 512. First electrical transmission part; 52. Second electrode; 521. Second electrical receiving part; 522. Second electrical transmission part; 54. Connecting member; 55. Electrical terminal

[0049] L1. First line; L2. Second line; L3. Third line; a. Preset angle between the first line and the second line; b. Preset angle between the first line and the third line Detailed implementation manners

[0050] For a better understanding of the technical solution of the present utility model, the embodiments of the present utility model will be described in detail below with reference to the accompanying drawings

[0051] It should be clear that the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model

[0052] The present utility model will be further described in detail below with reference to the accompanying drawings

[0053] In the following description of directions, when observing in the direction perpendicular to the Figure 1 plane of the paper Figure 1 the left side of the plane of the paper is the left Figure 1 the right side of the plane of the paper is the right Figure 1 the upper side of the plane of the paper is the upper Figure 1 the lower side of the plane of the paper is the lower Figure 1 the near side of the plane of the paper is the front Figure 1The far side of the middle paper surface is the rear. An embodiment where the left - right direction is the first direction, an embodiment where the front - rear direction is the second direction, and an embodiment where the up - down direction is the third direction.

[0054] Embodiment 1:

[0055] As Figures 1 - 8 shown, this embodiment provides a developing cartridge, and the developing cartridge 1 is detachably mounted on the drum assembly 2.

[0056] The drum assembly 2 includes a frame 21, a photosensitive drum 22, a first biasing member 231, a second biasing member 232, and an abutting portion 24. The photosensitive drum 22 can rotate about an axis extending in the first direction, and the photosensitive drum 22 is supported by the frame 21. There is also an elastic member (not shown) between the first biasing member 231 and the second biasing member 232 and the frame 21, and the elastic member causes the first biasing member 231 and the second biasing member 232 to apply a forward pressing force along the second direction to the developing cartridge 1. When the developing cartridge 1 is mounted on the drum assembly 2, the developing cartridge 1 is supported by the frame 21.

[0057] As Figures 3 - 8 shown, the developing cartridge 1 includes a cartridge body 10, a developing assembly, a transmission assembly, a detected member, a first cover 111, a second cover 121, and an identification assembly.

[0058] As Figure 3 shown, the cartridge body 10 has a receiving cavity for accommodating the developer. The cartridge body 10 has a first end 11 and a second end 12 oppositely arranged in the first direction, a third end 13 and a fourth end 14 oppositely arranged in the second direction, and a fifth end 15 and a sixth end 16 oppositely arranged in the third direction. A handle 141 is provided on the cartridge body 10, and the handle 141 is located at the fourth end 14. The transmission assembly is located at the first end 11 of the cartridge body 10 and is used to receive the power output by the image forming apparatus to drive the developing assembly and the detected member in the developing cartridge. The first cover 111 is detachably and fixedly mounted on the first end 11 of the cartridge body 10, and the first cover 111 at least covers part of the transmission assembly. The first cover 111 is used to protect the transmission assembly. The detected member is located at the second end 12 of the cartridge body 10, and the detected member is used to be detected by the image forming apparatus to transmit the information of the developing cartridge to the image forming apparatus. The second cover 121 is detachably and fixedly mounted on the second end 12 of the cartridge body 10, and the second cover 121 at least covers part of the detected member. The second cover 121 is used to protect the detected assembly.

[0059] The developing assembly includes a developing roller 131, a stirring frame (not shown), and a powder feeding roller (not shown). The developing roller 131, the stirring frame, and the powder feeding roller are all rotatably installed in the accommodating cavity between the first end 11 and the second end 12. The rotation axes of the developing roller 131, the stirring frame, and the powder feeding roller all extend in the first direction. The powder feeding roller is disposed adjacent to the developing roller 131, and in the second direction, the developing roller 131 is closer to the third end 13 of the cartridge 10 than the powder feeding roller. The stirring frame is used to stir the developer in the developing chamber, causing friction of the developer and preventing the developer from caking, and conveying the developer to the powder feeding roller, so that the powder feeding roller can better supply the developer to the developing roller. The developing roller 131 is used to contact the photosensitive drum 22 to transfer the developer to the photosensitive drum 22.

[0060] As Figure 3 shown, the developing cartridge 1 includes a guiding assembly. The guiding assembly includes a first guiding member 112 and a second guiding member 122. The guiding assembly is used to cooperate with the drum assembly 2 when the developing cartridge 1 is installed on the drum assembly 2, thereby guiding the smooth installation of the developing cartridge 1. The first guiding member 112 is disposed at the first end 11 of the cartridge body 10 and protrudes outward relative to the first end 11. The second guiding member 122 is disposed at the second end 12 of the cartridge body 10 and protrudes outward relative to the second end 12. In this embodiment, the first guiding member 112 and the second guiding member 122 are overlapped. In other embodiments, the first guiding member 112 and the second guiding member 122 may not be overlapped or only one guiding member may be provided.

[0061] As Figure 3 and Figure 4 shown, the transmission assembly is disposed at the first end 11 of the cartridge body 10. The transmission assembly includes a driving portion rotatably installed on the first end 11 of the cartridge body 10. The rotation axis of the driving portion is parallel to the first direction. The driving portion includes a driving gear 43 and a power receiving portion 40 integrally formed coaxially. The driving gear 13 is closer to the first end 11 of the cartridge body 10 than the power receiving portion 40 in the first direction. In this embodiment, the driving gear 43 is composed of a large-diameter driving gear 431 and a small-diameter driving gear 432. The large-diameter driving gear 431 is closer to the first end 11 of the cartridge body 10 than the small-diameter driving gear 432 in the first direction. In other embodiments, the driving gear 43 may be a single-stage gear, and the specific setting is determined by the use environment, and the specific structure is not limited too much here. The power receiving portion 40 is used to be coupled with the power output shaft on the image forming device to receive the power output by the image forming device.

[0062] The transmission assembly further includes a developing gear 41, a powder feeding gear 42, an idler gear 44, and a stirring gear 45. The developing gear 41 is coaxially and fixedly installed at one end of the developing roller 131 close to the first end 11 of the cartridge 10. The powder feeding gear 42 is coaxially and fixedly installed at one end of the powder feeding roller close to the first end 11 of the cartridge 10. The stirring gear 45 is coaxially and fixedly installed at one end of the stirring frame close to the first end 11 of the cartridge 10. The idler gear 44 is rotatably installed at the first end 11 of the cartridge 10. In this embodiment, the idler gear 44 includes a large-diameter idler gear 441 and a small-diameter idler gear 442. In other embodiments, the idler gear 44 may be a single-stage gear, which is specifically set according to the use environment and will not be further limited herein. After the power receiving portion 40 receives the power output by the image forming apparatus, it drives the driving gear to rotate, and the driving gear transmits the power to each gear on the transmission assembly.

[0063] As Figure 3 shown, the developing cartridge 1 is provided with a separation assembly for receiving the separation force applied by the image forming apparatus so as to separate the developing roller 131 from the photosensitive drum 22. The separation assembly includes a first separating member 113 and a second separating member 123. Both the first separating member 113 and the second separating member 123 extend in the first direction. The first separating member 113 is located at the first end 11 of the cartridge 10, and the second separating member 123 is located at the second end 12 of the cartridge 10. In the second direction, the first separating member is located between the rotation axis of the power receiving portion 40 and the rotation axis of the developing roller 131. When the separation assembly receives the separation force applied by the drum assembly 2, the separation assembly drives the developing cartridge 1 to move backward in the second direction so that the developing roller 131 and the photosensitive drum 22 are disengaged. In this embodiment, the first separating member 113 and the second separating member 123 are overlapped in the first direction. In other embodiments, the first separating member 113 and the second separating member 123 may not be overlapped or only one separating member may be provided.

[0064] As Figure 3 and Figure 5 shown, a transmission gear 46 and a detected member 47 are provided at the second end 12 of the cartridge 10. The transmission gear 46 is fixedly installed at one end of the stirring frame close to the second end 12 of the cartridge 10, and the transmission gear 46 can rotate following the stirring frame. The detected member 47 is rotatably installed at the second end of the cartridge 10. The detected member 47 includes an engaging portion 471 and a detected portion 472. The engaging portion 471 is used for engaging with the transmission gear 46 to rotate following the transmission gear. The detected member 47 further includes a non-engaging portion (not shown). When the non-engaging portion faces the transmission gear 46, the detected member 47 does not rotate following the transmission gear 46. The detected portion 472 is an arc protrusion, and the detected portion 472 is used for triggering a detecting member in the image forming apparatus so that the developing cartridge 1 is detected by the image forming apparatus.

[0065] The second end of the cartridge body 10 is also provided with a bearing 48 (i.e., the bearing 48 can be regarded as an electrode in this embodiment). The bearing 48 protrudes outward in the first direction, and the object to be detected rotates relative to the bearing 48. The bearing 48 is electrically connected to the developing roller 131 and the powder feeding roller. The bearing 48 is used to contact an electrical transmission member in the image forming apparatus to receive the voltage output by the image forming apparatus and transfer the voltage to the developing roller 131 and the powder feeding roller.

[0066] As Figure 6 shown, the developing cartridge 1 is also provided with a pressing component. The pressing component is used to receive the forward pressing force applied by the drum component 2 in the second direction so that the developing roller 131 and the photosensitive drum 22 are in close contact. The pressing component includes a first pressing member 142 and a second pressing member 143. In the second direction, the first pressing member 142 and the second pressing member 143 extend backward at the fourth end 14 in the second direction. The first pressing member 142 contacts the first force applying member 231 on the drum component 2, and the second pressing member 143 contacts the second force applying member 232, thereby contacting the forward pressing force applied by the drum component 2 in the second direction. In this embodiment, the first pressing member 142 and the second pressing member 143 are arranged overlappingly in the first direction. In other embodiments, the first pressing member 142 and the second pressing member 143 may not be arranged overlappingly or only one pressing member may be provided.

[0067] As Figure 1 、 Figure 3 、 Figure 6 、 Figure 7 and Figure 8 shown, the developing cartridge 1 is also provided with an identification component. The identification component is located at the first end 11 of the cartridge body 10. The identification component includes a storage medium 31, a first bracket 32, a second bracket 33, a pawl portion 34, and an elastic member 35. The storage medium 31 is used to store information of the developing cartridge 1. The storage medium 31 is detachably and fixedly installed on the first bracket 32. The storage medium 31 includes an electrical contact surface 311. The electrical contact surface 311 is electrically connected to a chip in the storage medium 31. The electrical contact surface 311 extends in the first direction, and the orientation of the electrical contact surface 311 is perpendicular to the first direction. In this embodiment, there are four electrical contact surfaces 311 provided on the storage medium 31, and the four electrical contact surfaces 311 are arranged in the second direction, that is, in this embodiment, the arrangement direction of the four electrical contact surfaces 311 is the same as the connection direction of the developing roller 131 and the pressing member. The number of the electrical contact surfaces 311 is not limited in this embodiment and can be set according to actual needs.

[0068] A plurality of electrical contact surfaces 311 are arranged along a specific direction. The first line in this direction is L1, and the second line passing through the center point of the developing roller 131 and the force-receiving point of the pushing force of the pushing member receiving drum assembly 2 is L2. The arrangement direction of the plurality of electrical contact surfaces 311 is the same as the direction where the pushing member and the developing roller are connected. In this embodiment, "the same direction" means parallel or having a certain included angle. As long as the direction of one has a component in the direction of the other, it is considered the same direction. Specifically, for L1 in the arrangement direction of the plurality of electrical contact surfaces 311, and L2 passing through the center point of the developing roller 131 and the force-receiving point on the pushing member receiving the pushing force, a preset included angle a is formed between L1 and L2. The value range of the preset included angle a is: 0° ≤ a ≤ 60°. As long as the preset included angle a is within this range, it is defined in this application that the arrangement direction of the plurality of electrical contact surfaces 311 is the same as the direction where the developing roller 131 and the pushing member are connected. That is, for L1 in the arrangement direction of the plurality of electrical contact surfaces 311 and L2 passing through the center point of the developing roller 131 and the force-receiving point on the pushing member receiving the pushing force, if the included angle conforms to the preset included angle a, it can be regarded as the same direction. In other embodiments of this application, for the arrangement direction of the plurality of electrical contact surfaces 311 being the same as the direction where the developing roller 131 and the pushing member are connected, it is defined in this way.

[0069] Furthermore, when the separating assembly receives the separating force of the image forming apparatus, it can move relative to the drum assembly 2, thereby separating the developing roller 131 from the photosensitive drum 22. The third line in the moving direction of the developing cartridge 1 after receiving the separating force is L3. The arrangement direction of the plurality of electrical contact surfaces 311 is the same as the moving direction of the developing cartridge after receiving the separating force. That is, a preset included angle b exists between L1 and L3. The preset included angle b satisfies the range: 0° ≤ b ≤ 45°. As long as the preset included angle b is within this range, it is defined in this application that the arrangement direction of the plurality of electrical contact surfaces 311 is the same as the direction of drum separation when the developing cartridge 1 receives the separating force. That is, for L1 in the arrangement direction of the plurality of electrical contact surfaces and L2 in the direction of drum separation of the developing cartridge, if the included angle conforms to the preset included angle b, it can be regarded as the same direction. In other embodiments of this application, for the arrangement direction of the plurality of electrical contact surfaces 311 being the same as the direction of drum separation when the developing cartridge receives the separating force, it is defined in this way.

[0070] The first bracket 32 includes a mounting portion 321, a mating port 322, a first protrusion 323, a second protrusion 324, and a third protrusion (not shown). The interior of the first bracket 32 is hollow. The mounting portion 321 is located at the upper end of the first bracket 32 in the third direction, and the storage medium 31 is detachably and fixedly mounted on the mounting portion 321. The mating port 322 extends in the third direction. In this embodiment, two mating ports 322 are provided and are respectively located on both sides of the first bracket 32 in the first direction. The first protrusion 323 is provided on one side of the first bracket 321 away from the first end 11 in the first direction and protrudes in the direction away from the first end 11. The second protrusion 324 and the third protrusion are provided on one side of the first bracket 32 close to the first end 11 in the first direction and extend in the direction close to the first end 11. The first cover 111 is provided with a first movable hole 1111 and a second movable hole 1112. In other embodiments, the first movable hole 1111 and the second movable hole 1112 are provided at the first end 11, and the second protrusion 324 and the third protrusion can be movably inserted into the first movable hole 1111 and the second movable hole 1112 respectively. The second bracket 33 includes an insertion portion 331 and a third movable hole 332. The second bracket 33 is fixedly mounted on the first end 11 through the insertion portion 311. The third movable hole 332 is a through hole extending in the first direction, and the first protrusion 323 can be movably inserted into the third movable hole 332. The second bracket 33 is used to prevent the first bracket 32 from falling off.

[0071] The first bracket 332 can move relative to the box body 10 and the second bracket 33 in the first direction, the second direction, and the third direction.

[0072] The pawl portion 34 includes a contact portion 341 and a mating protrusion 342. The contact portion 341 is used to abut against the abutting portion 24 of the drum assembly 2. The mating protrusion 342 is a protrusion extending along the axial direction. In this embodiment, there are two mating protrusions 342. The pawl portion 34 is movably mounted on the first bracket 32, and the mating protrusion 342 can be movably located within the mating port 322. The elastic member 35 is installed inside the first bracket 32. One end of the elastic member 35 abuts against the interior of the first bracket 31, and the other end abuts against the pawl portion 34. A first mounting post 325 is provided inside the first bracket 32, and a second mounting post 343 is provided on the pawl portion 34. The two ends of the elastic member 35 can be respectively installed on the first mounting post 325 and the second mounting post 343, and the elastic member 35 can be compressed and extended. In this embodiment, the specific structures of the components in the identification assembly are not limited, as long as the storage medium 31 can move relative to the box body 10 or the bracket supporting the storage medium 31 can drive the storage medium 31 to move relative to the box body 10. In some embodiments, the identification assembly is provided at the second end 12 of the box body 10.

[0073] With the developing cartridge 1 installed on the drum unit 2, the developing cartridge 1 and the drum unit 2 are jointly installed in the image forming apparatus. During the installation process, the first bracket 31 drives the storage medium 31 to move relative to the cartridge body 10 so that the storage medium 31 avoids the components in the image forming apparatus. After the developing cartridge 1 and the drum unit 2 are completely installed in the image forming apparatus, the storage medium 31 contacts the electrical contact pins (not shown) in the image forming apparatus to transfer the information of the developing cartridge 1 to the image forming apparatus, so that the developing cartridge 1 is recognized by the image forming apparatus. There are multiple electrical contact pins in the image forming apparatus, and the number of the electrical contact pins matches the number of the electrical contact surfaces 311. In this embodiment, the number is set to four, and the arrangement direction of the four electrical contact pins is the same as the arrangement direction of the four electrical contact surfaces 311. The four electrical contact pins and the four electrical contact surfaces 311 are in one-to-one contact. If the four electrical contact pins and the four electrical contact surfaces 311 are not in one-to-one contact, the image forming apparatus cannot recognize the developing cartridge 1.

[0074] When the developing cartridge 1 stops working in the image forming apparatus and the image forming apparatus issues a separation command, the first separating member 113 and the second separating member 123 receive the separating force applied by the image forming apparatus and drive the developing cartridge 1 to move in the second direction away from the photosensitive drum 22. At this time, the developing roller 131 is gradually separated from the photosensitive drum 22. At this time, since the storage medium 31 can move relative to the cartridge body 10 with the first bracket 32, when the developing cartridge 1 moves away from the photosensitive drum 22, the storage medium 31 remains in contact with the electrical contact pins and the four electrical contact surfaces 311 remain in one-to-one contact with the four electrical contact pins, and the storage medium 31 moves relative to the cartridge body 10.

[0075] When the developing cartridge 1 needs to work again, the separating force applied by the image forming apparatus disappears, and the developing cartridge 1 moves in the direction close to the photosensitive drum 22 under the action of the urging component, so that the developing roller 113 is in close contact with the photosensitive drum 22, and the storage medium 31 moves relative to the cartridge body 10 again.

[0076] Embodiment 2

[0077] Except for special instructions, the structure of the developing cartridge in this embodiment is the same as that in Embodiment 1. The main difference between this embodiment and Embodiment 1 is that the position where the identification component is set and the orientation of the storage medium in this embodiment are different from those in Embodiment 1.

[0078] As Figure 9 and Figure 10As shown, the developing cartridge 1 includes a bearing 48. The bearing 48 is detachably mounted on the second end 12. A developing mounting hole (not shown) and a powder feeding mounting hole (not shown) are provided on the bearing 48. The developing mounting hole and the powder feeding mounting hole can be through holes penetrating the bearing 48 in the first direction or blind holes. One end of the developing roller 131 close to the second end 12 in the first direction is inserted into the developing mounting hole, and one end of the powder feeding roller close to the second end 12 in the first direction is inserted into the powder feeding mounting hole. That is, the bearing 48 supports one end of the developing roller 131 and the powder feeding roller close to the second end 12 in the first direction. The bearing 48 further includes a shaft portion 481 and a second guiding member 122. In this embodiment, it is preferred that the three can be integrally formed with the bearing 48. In some embodiments, the three can also be assembled and mounted on the bearing 48. In this embodiment, the shaft portion 481 is made of a conductive material. The shaft portion 481 extends in a direction away from the second end 12 in the first direction. The shaft portion 481 is partially exposed through the through hole 1211 on the second cover 121. An electric receiving portion 4811 is provided at the end of the shaft portion 481 away from the second end 12 in the first direction. The electric receiving portion 4811 is exposed through the through hole 1211 on the second cover 121. The electric receiving portion 4811 is used to contact an electric output member in the image forming apparatus to receive the voltage output by the image forming apparatus and transfer the voltage to the developing roller 131 and the powder feeding roller. That is, the same as in the first embodiment, the bearing 48 can be regarded as an electrode.

[0079] An identification component is further provided on the developing cartridge 1. The identification component is located at the second end 12 of the cartridge body 10. In this embodiment, the identification component includes a storage medium 31, a first bracket 32, a pawl portion 34, and an elastic member 35. The first bracket 32 is movably mounted on the pawl portion 34 in the axial direction 31. The first bracket 32 is an insulating member, that is, the first bracket 32 is made of a non-conductive insulating material. The inside of the first bracket 32 is hollow. An installation portion 321 and a mating hole 322 are provided on the first bracket 32. The installation portion 321 is located at one end of the first bracket 32 away from the second end 12 in the first direction. The mating hole 322 extends in the first direction. In this embodiment, two mating holes 322 are provided, respectively located on both sides of the first bracket 32. The mating hole 322 is matched with the pawl portion 34 of the bearing 48. The pawl portion 34 extends in a direction away from the second end 12 in the first direction. In the second direction, the pawl portion 34 is located between the shaft portion 481 and the second guiding member 122. In this embodiment, the pawl portion 34 is preferably provided with two pawls. That is, when the first bracket 32 is mounted on the bearing 48, the two pawls on the pawl portion 34 are respectively inserted into the two mating holes to prevent the first bracket 32 from detaching from the bearing 48 when moving relative to the bearing 48. In this embodiment, the number of pawls of the pawl portion 34 and the number of mating holes 313 on the bracket are not limited, and the two are matched.

[0080] The storage medium 31 can move relative to the cartridge body 10 following the first bracket 32. In the second direction, the storage medium 31 is located between the detected member 47 and the developing roller 131. The orientation of the electrical contact surface 311 is parallel to the first direction. The electrical contact surface 311 is used for direct contact with the electrical contact pin in the image forming apparatus to transmit the information in the storage medium 31, and a plurality of electrical contact surfaces 311 are arranged in the second direction. In this embodiment, the storage medium 31 and the bearing 48 at least partially overlap in the first direction, that is, the storage medium 31 and the electrode are at least partially overlapped and arranged in the first direction. The elastic member 35 is installed inside the first bracket 32. In the first direction, one end of the elastic member 35 away from the second end 12 abuts against the first bracket 32, and one end close to the second end 12 abuts against the pawl portion 34. A first mounting post (not shown) is provided inside the first bracket 32, and a second mounting post 343 is provided on the pawl portion 34. Both ends of the elastic member 35 can be respectively installed on the first mounting post and the second mounting post 343. The elastic member 35 can be compressed and stretched. In this embodiment, the elastic member 35 is preferably a compression spring, and in some embodiments, it can also be other elastic materials such as a tension spring or a sponge.

[0081] During the process of installing the developing cartridge 1 into the image forming apparatus, in order to enable the storage medium 31 to avoid the components in the image forming apparatus, the storage medium 31 follows the first bracket 32 to move relative to the cartridge body 10 and the elastic member 35 is compressed. After passing over the components in the image forming apparatus, under the action of the elastic member 35, the storage medium 31 and the first bracket 32 move relative to the cartridge body 10 again so that the storage medium 31 can contact the electrical contact pin. Or, when the separation assembly receives the separation force output by the image forming apparatus and drives the developing cartridge 1 to move in a direction away from the photosensitive drum 22, the storage medium follows the first bracket 32 to move relative to the cartridge body 10 so that the storage medium 31 can always contact the electrical contact pin.

[0082] In this embodiment, the storage medium 31 and the electrode are arranged adjacent to each other, which can make the structural arrangement of the components on the developing cartridge 1 more compact, conducive to the miniaturization of the developing cartridge 1. And since the voltage received by the electrical receiving portion 4811 from the image forming apparatus is relatively strong, an insulating member (the first bracket 32) is provided between the storage medium 31 and the bearing 48 to prevent the storage medium 31 from receiving a strong voltage and causing damage to the storage medium 3.

[0083] Furthermore, the storage medium 31 includes an electrical contact surface 311, and the storage medium 31 is electrically connected to the electrical contact surface 311. In this embodiment, there are four electrical contact surfaces 311. The arrangement direction of the four electrical contact surfaces 311 is parallel to the second direction. The electrical contact surface 311 extends in the third direction, and the orientation of the electrical contact surface 311 is parallel to the first direction.

[0084] In a possible case, such as Figure 11As shown, this is a variant of the second embodiment. The first bracket 32 is fixedly installed on the first cover 111 or the box body 10 and protrudes in the first direction away from the first end 11. The identification component is located on the first end 11 of the box body 10. The third bracket 36 is movably installed on the first bracket 32. The third bracket 36 is used to support the storage medium 31 and drive the storage medium 31 to move relative to the box body 10. The side of the storage medium 31 with the electrical contact surface 311 faces away from the first end 11 in the first direction.

[0085] When the first separating member 113 and the second separating member 123 drive the developing cartridge 1 to move, the storage medium 31 maintains contact with the electrical contact pins, and the storage medium 31 moves relative to the box body 10.

[0086] Embodiment Three

[0087] Unless otherwise specified, the structure of the developing cartridge in this embodiment is the same as that in Embodiment One. The main difference between this embodiment and Embodiment One is that two electrodes are provided in this embodiment.

[0088] As Figure 12 shown, the developing cartridge 1 includes a bearing 48. The bearing 48 is detachably and fixedly installed at the second end 12. The bearing 48 includes a main body portion 482, a bracket portion 483, and an installation groove 484. In this embodiment, it is preferred that the three can be integrally formed with the bearing 48. In some embodiments, the three can also be combined. In this embodiment, the bearing 48 is an insulating member made of an insulating material. In this embodiment, the bracket portion 483 is the same as the first bracket 32 in Embodiment One. The main body portion 482 is plate-shaped. The main body portion 482 is provided with a developing installation hole (not shown) and a powder feeding installation hole (not shown). The developing installation hole and the powder feeding installation hole can be through holes penetrating the bearing 48 in the first direction or blind holes. One end of the developing roller 131 close to the second end 12 in the first direction is inserted into the developing installation hole, and one end of the powder feeding roller close to the second end 12 in the first direction is inserted into the powder feeding installation hole, that is, the bearing 48 supports one end of the developing roller 131 and the powder feeding roller close to the second end 12 in the first direction. The bracket portion 483 extends in the first direction away from the second end 12 on the basis of the main body portion 482. In the second direction, the bracket portion 483 is farther away from the developing roller 131 than the developing installation hole and the powder feeding installation hole. The installation groove 484 continues to extend in the direction away from the second end 12 on the basis of the bracket portion 483, that is, it is farther away from the second end 12 than the bracket portion 483 in the first direction. The installation groove 484 is specifically in the shape of a groove. In some embodiments, the bracket portion 483 can be integrally formed with the installation groove 484, and the two are movably installed on the main body portion 482.

[0089] As Figure 12As shown, the storage medium 31 is used to store information of the developing cartridge 1 and transmit the stored information to the image forming apparatus when the developing cartridge 1 is installed on the image forming apparatus. The storage medium 31 is detachably and fixedly installed on the installation groove 484, and in the second direction, the storage medium 33 is located between the detected member 49 and the developing roller 131. The storage medium 33 includes electrical contact surfaces, and the number of electrical contact surfaces is multiple. In this embodiment, preferably four, the electrical contact surfaces are electrically connected to the chip, the orientation of the electrical contact surfaces is parallel to the first direction, and the electrical contact surfaces are used to directly contact the electrical contact pins in the image forming apparatus to transmit the information in the storage medium 33. In this embodiment, the storage medium 31 and the bearing 48 at least partially overlap in the first direction, and the projection of the storage medium 31 and the driving part in the first direction at least partially overlap.

[0090] As Figure 12 shown, the developing cartridge 1 further includes an electrode assembly, and the electrode assembly is used to receive the voltage output by the image forming apparatus. In this embodiment, the electrode assembly includes a first electrode 51 and a second electrode 52. The first electrode 51 and the second electrode 52 are separated by an insulating member. In this embodiment, the first electrode 51 and the second electrode 52 are separated by the bearing 48. The first electrode 51 is used to transmit the received voltage to the developing roller 131, and the second electrode 52 is used to transmit the received voltage to the powder feeding roller. The first electrode 51 includes a first electrical receiving portion 511 and a first electrical transmitting portion 512. In the first direction, the first electrical receiving portion 511 is closer to the detected member 49 than the first electrical transmitting portion 512. The first electrical transmitting portion 512 is connected to one end of the developing roller 131 close to the second end 12 in the first direction. More specifically, the first electrical transmitting portion 512 has a hole portion, and one end of the developing roller 131 close to the second end 12 in the first direction is inserted into the first hole portion. The first electrical receiving portion 511 contacts the first electrical transmitting member in the image forming apparatus to receive the voltage output in the image forming apparatus and transmit the voltage to the developing roller 131. In the second direction, at least part of the storage medium 31 is farther from the developing roller 131 than the first electrical receiving portion 511.

[0091] The second electrode 52 includes a second electrical receiving portion 521 and a second electrical transmitting portion 522. In the second direction, the second electrical receiving portion 521 is farther from the developing roller 131 than the second electrical transmitting portion 522. The second electrical transmitting portion 522 is connected to one end of the powder feeding roller close to the second end 12 in the first direction. More specifically, the second electrical transmitting portion 522 has a second hole portion, and one end of the powder feeding roller close to the second end 12 in the first direction is inserted into the second hole portion. The second electrical receiving portion 521 contacts the second electrical transmitting member in the image forming apparatus to receive the voltage output in the image forming apparatus and transmit the voltage to the powder feeding roller. In the second direction, the second electrical receiving portion 522 is closer to the detected member 49 than the first electrical receiving portion 512. In the third direction, the storage medium 31 is located below the first electrical receiving portion 521.

[0092] In this embodiment, the storage medium 31 and the electrode assembly are disposed adjacent to each other, which can make the structural arrangement of the components on the developing cartridge 1 more compact, facilitating the miniaturization of the developing cartridge 1. Moreover, since an insulating member is provided between the electrode assembly and the storage medium 31, the storage medium 31 can be prevented from being affected by the electrode assembly, ensuring the normal operation of the storage medium 31.

[0093] Embodiment Four:

[0094] Unless otherwise specified, the structure of the developing cartridge in this embodiment is the same as that in Embodiment Three. The main difference between this embodiment and Embodiment Two lies in that the position of the storage medium in this embodiment is different from that in Embodiment Two.

[0095] As Figures 13 - 14 shown, in this embodiment, the storage medium 31 is no longer fixedly installed in the installation groove 484, but is fixedly installed at the sixth end 16 of the cartridge body 10. The developing cartridge 1 is provided with electrical terminals 55, which are fixedly installed in the installation groove 484. The electrical terminals 55 are used for direct contact with the electrical contact pins in the image forming apparatus. In this embodiment, the electrical terminals 55 are preferably conductive steel sheets, and in other embodiments, they can be other conductive materials. There are multiple electrical terminals 55. In this embodiment, four electrical terminals 55 are provided to match the electrical contact surface. In the second direction, at least a part of the electrical terminals 55 is farther from the developing roller 131 than the first electrical receiving portion 511. In the third direction, at least a part of the electrical terminals 55 is located below the second electrical receiving portion 521. The electrical terminals 55 are separated from the first electrode 51 and the second electrode 52 by a bearing 48 serving as an insulating member. The developing cartridge 1 further includes connecting members 54. There are multiple connecting members 54. In this embodiment, four connecting members 54 are provided to match the electrical contact surface. The connecting members 54 are conductive members. In this embodiment, the connecting members 54 are preferably conductive wires. In some embodiments, the connecting members 55 are conductive steel sheets or copper sheets. One end of the connecting member 54 is connected to the electrical contact surface of the storage medium 31, and the other end is connected to the electrical terminal 55. Moreover, the connecting members 54 are connected to the electrical contact surface and the electrical terminal 55 in a one-to-one correspondence, that is, the connecting members 54 are used to connect the electrical contact surface and the electrical terminal 55, so that the information in the storage medium 31 is transmitted to the image forming apparatus through the electrical terminals 55. In some other embodiments, the electrical terminals 55 and the connecting members 54 are integrally formed and then directly connected to the electrical contact surface, which can specifically be an integrally formed steel sheet.

[0096] Embodiment Five:

[0097] Unless otherwise specified, the structure of the developing cartridge in this embodiment is the same as that in Embodiment Two. The main difference between this embodiment and Embodiment Two is that the storage medium in this embodiment cannot move relative to the cartridge body.

[0098] As Figures 15 - 18As shown, the developing cartridge 1 includes a third separating member 114. In this embodiment, only one third separating member 114 is provided. The third separating member 114 is located at the first end 11. In this embodiment, the third separating member 114 is provided on the first cover 111 and extends in the first direction away from the first end 11. In some embodiments, the third separating member 114 can be directly provided on the cartridge body 10. The third separating member 114 is used to receive the separating force applied by the image forming apparatus, so that the third separating member 114 drives the developing cartridge 1 to move in the third direction away from the photosensitive drum 22, so that the developing roller 131 is disengaged from contact with the photosensitive drum 22. A force-receiving surface is provided on the third separating member 114. The force-receiving surface is an inclined surface or an arc surface. The force-receiving surface extends to the right in the first direction and extends downward in the third direction. The force-receiving surface is used to contact with the force-applying rod on the image forming apparatus to receive the separating force applied by the image forming apparatus. When the image forming apparatus issues a separating instruction, the force-applying rod approaches the third separating member 114 in the first direction, and abuts against the force-receiving surface during the movement in the first direction, so that the third separating member 114 drives the developing cartridge 1 to move in the third direction away from the photosensitive drum 22.

[0099] The developing cartridge 1 further includes a load-bearing assembly. The load-bearing assembly is used to support the developing cartridge 1 when the developing cartridge 1 is installed on the drum assembly 2. The load-bearing assembly includes a first load-bearing protrusion 115 and a second load-bearing protrusion 116. The first load-bearing protrusion 115 is located at the first end 11. In this embodiment, the first load-bearing protrusion 115 is provided on the first cover 111 and extends in the first direction away from the first end 11. In some embodiments, the first load-bearing protrusion 115 can be directly provided on the cartridge body 10. The second load-bearing protrusion 116 is located at the second end 12. The second load-bearing protrusion 116 is provided on the cartridge body 10 and extends in the first direction away from the second end 12. In this embodiment, the first load-bearing protrusion 115 and the second load-bearing protrusion 116 are overlapped in the first direction. In other embodiments, the two may not be overlapped or only one load-bearing protrusion is provided.

[0100] As Figure 16 shown, a third electrode 124 and a powder filling port 125 are provided at the second end 12 of the developing cartridge 1. The third electrode 124 is used to receive the electric energy output by the image forming apparatus. The third electrode 124 is electrically connected to the developing roller 131 and the powder feeding roller, so as to transfer the electric energy to the developing roller and the powder feeding roller. When observed from the first direction, the third electrode 124 overlaps with the developing roller 131. The powder filling port 125 is used to allow the developer to enter the accommodating cavity. When observed from the first direction, the powder filling port 125 does not overlap with the second cover 121.

[0101] As Figure 16As shown, the storage medium 31 is fixedly arranged on the second cover 121 and supported by the second cover 121. The storage medium 31 and the separating member are respectively located at two ends of the cartridge 10 in the first direction. The storage medium is used to store information of the developing cartridge 1 and transfer the information to the image forming apparatus. The storage medium 31 includes an electrical contact surface 311, which is electrically connected to the storage medium 31. The electrical contact surface 311 is used to contact an electrical contact pin in the image forming apparatus to transfer the information in the storage medium 31 to the image forming apparatus. The electrical contact surface 311 faces the first direction and extends along the second direction. In this embodiment, there are four electrical contact surfaces 311, and the four electrical contact surfaces 311 are arranged along the third direction. The number of the electrical contact surfaces 311 is not limited in this embodiment and can be set according to actual requirements. In this embodiment, the arrangement direction of the four electrical contact surfaces 311 is the same as the direction in which the developing roller 131 and the photosensitive drum 22 are separated.

[0102] When the third separating member 114 receives the separating force output by the image forming apparatus and drives the first end of the developing cartridge 1 to move away from the photosensitive drum 22, the storage medium 31 remains in contact with the electrical contact pin, and the storage medium 31 does not move relative to the cartridge 10.

[0103] The above are only some embodiments of the present utility model. For those of ordinary skill in the art, without departing from the creative concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model.

Claims

1. A developing cartridge, which can be detachably mounted on a drum assembly having a photosensitive drum, and can be detachably mounted together with the drum assembly in an image forming device having an electric contact pin, characterized in that: The developing box comprises: A box body for storing developer, the box body having a first end and a second end opposite to each other in a first direction, a third end and a fourth end opposite to each other in a second direction, and a fifth end and a sixth end opposite to each other in a third direction; a developing roller, which is disposed at the third end of the box body and can rotate around an axis extending along the first direction; A driving unit, which is arranged at the first end of the box body and is used to receive a driving force input by the image forming device; A forced pushing assembly, which can receive the forced pushing force applied by the drum assembly when the developing box is installed on the drum assembly, so that the developing roller is in contact with the photosensitive drum; an identification component, used for storing information of a developing cartridge, the identification component comprising a storage medium having a plurality of electrical contact surfaces, the storage medium storing information of the developing cartridge, and the storage medium being electrically connected to the electrical contact pins through the electrical contact surfaces, so as to transmit the information of the developing cartridge stored in the storage medium to the image forming device; The multiple electrical contact surfaces are arranged along a specific direction, the first line in the direction is L1, the second line passing through the force point of the pushing member of the pushing assembly receiving the pushing force and the center of the developing roller is L2, and a preset angle a is formed between L1 and L2, and the value range of the preset angle a satisfies: 0°≤a≤60°.

2. A developing cartridge according to claim 1, characterized in that: The developing box also includes a separation component, which can receive the separation force applied by the image forming device to force the developing box to move relative to the drum assembly, and the arrangement direction of the multiple electrical contact surfaces is the same as the direction in which the developing box moves relative to the drum assembly after receiving the separation force.

3. A developing box according to claim 2, characterized in that: The separation assembly is arranged at both ends or one end of the box body in the first direction, and the developing box receives the separation force and can move relative to the drum assembly in the second direction or the third direction to separate the developing roller from the photosensitive drum; The third line on which the developing box receives the separation force relative to the moving direction of the drum assembly is L3, and a preset angle b is formed between L3 and L1, and the value range of the preset angle b satisfies: 0°≤a≤45°.

4. A developing cartridge according to claim 3, characterized in that: The storage medium and the separation assembly are arranged at the same end of the box body in the first direction. When the developing box receives the separation force and moves relative to the drum assembly along the second direction or the third direction, the storage medium can move relative to the box body along the third direction or the first direction.

5. A developing cartridge according to claim 3, characterized in that: The storage medium is arranged at one end of the box body, and the separation assembly is arranged at the other end of the box body opposite to the storage medium in the first direction. When the developing box receives the separation force and moves along the second direction or the third direction relative to the drum assembly, the storage medium moves together with the box body.

6. A developing cartridge according to claim 1, characterized in that: The developing box also includes an electrode, which is connected to the developing roller and can be electrically connected to the image forming device to supply power to the developing roller. In a first direction, at least a portion of the electrode overlaps a portion of the identification component.

7. A developing cartridge according to claim 6, characterized in that: The electrode is divided into a first electrode and a second electrode, the developing box also includes a first bearing, the identification component also includes a first bracket, the storage medium is arranged on the first bracket, the first bearing and the first bracket are made of insulating material, and the first electrode and the second electrode are separated by the first bearing in a first direction.

8. A developing cartridge according to claim 1, characterized in that: The developing box further comprises a connecting piece, the storage medium and the electrical contact surface are separately arranged, and the storage medium is connected to the electrical contact surface via the connecting piece.

9. A developing cartridge according to claim 1, characterized in that: The electrical contact surface may be arranged at the first end of the box body or at the second end of the box body.

10. A developing cartridge according to claim 9, characterized in that: A normal line passing through the plurality of electrical contact surfaces is parallel to the first direction or parallel to the third direction.

11. A developing cartridge according to claim 1, characterized in that: The developing box further comprises a detected member, which is arranged at the second end of the box body. The detected member can move with the rotation of the driving part, so as to cooperate with the image forming device so that the developing box is detected by the image forming device.

12. A developing cartridge according to claim 1, characterized in that: The developing box also includes a load-bearing portion, which is symmetrically arranged at the first end and the second end of the developing box along the first direction. When the developing box is matched with the drum assembly, the load-bearing portion contacts the drum assembly to support the weight of the developing box.

Images