Developing cartridge and drum cartridge

Abstract

The utility model provides a developing box, which is used for being matched with a drum box, is detachably arranged on imaging equipment provided with a contact pin, and comprises a shell, a driving device and a driving device, a developing member rotatably provided in the housing about a rotation axis extending in a first direction; a stirring member; the driving force receiving part is used for receiving the driving force; the driving force transmission device comprises a first driving part, a middle driving part and a fourth driving part, the fourth driving part is arranged at the tail end of the stirring part, the middle driving part comprises a first large-diameter part and a first small-diameter part which are coaxially arranged, and in the first direction, the first large-diameter part is farther away from the shell than the first small-diameter part; the first large-diameter part is combined with the first driving piece, and the first small-diameter part is combined with the fourth driving piece; the forced pushing part is used for abutting against a forced pushing part in the drum box, and the forced pushing part is located between the driving force receiving piece and the stirring piece in the second direction intersecting with the first direction, so that stable contact can be formed between the chip assembly and the contact pin.

Description

Technical Field

[0001] The utility model relates to the field of electronic photographic imaging, in particular to a developing box and a drum box used for electronic photographic imaging equipment. Background Art

[0002] A developing box is a container for containing developer, generally including a driving force receiving member, a driving force transmitting device, a developing member and a stirring member. The driving force receiving member is used to receive the driving force from the imaging device. Through the driving force transmitting device, the developing member and the stirring member can be driven by the driving force to rotate. The developing member is used to carry the developer and supply it to the photosensitive member close to it, so that the electrostatic latent image on the surface of the photosensitive member is developed.

[0003] In order to enable the imaging device to obtain parameter information of the developing box, the developing box also includes a chip assembly for contacting the contact pin in the imaging device. The existing driving force transmission device includes a stirring member driving member for driving the stirring member to rotate. The stirring member driving member includes a large diameter portion and a small diameter portion. Along the direction of the rotation axis of the developing member, the large diameter portion is closer to the chip assembly than the small diameter portion.

[0004] In order to keep the developing member and the photosensitive member close to each other, a forced pushing portion is also provided in the developing box, and the forced pushing portion can receive the forced pushing force from the outside of the developing box. At the same time, the forced pushing portion is arranged close to the stirring member driving member, so that the space formed around the small diameter portion can just accommodate the forced pushing portion. Finally, the miniaturization of the developing box can be achieved.

[0005] In the actual operation of the developing box, the driving force receiving member and the driving force transmitting device will generate vibrations. Especially when the chip assembly, the driving force receiving member and the driving force transmitting device are arranged on the same side of the developing box, the chip assembly will be affected by greater vibrations, and thus, the contact between the chip assembly and the contact pin will become unstable. Utility Model Content

[0006] To this end, the utility model provides a developing box adopting the following technical solution to improve the contact stability between the chip component and the contact pin, specifically:

[0007] A developing box, used to cooperate with a drum box, the drum box and the developing box are installed together in a detachable manner to an imaging device provided with a contact pin, the developing box includes a shell for accommodating a developer; a developing member, which can be rotatably arranged in the shell around a rotation axis extending along a first direction, and is used to carry the developer; a stirring member, used to stir the developer; a driving force receiving member, used to receive a driving force from the imaging device; a chip assembly, having a first chip electrical contact portion for contacting the contact pin; the developing box also includes a driving force transmission device, including a first driving member, an intermediate driving member and a fourth driving member, the fourth driving member is arranged at the end of the stirring member, the first driving member is coaxially arranged with the driving force receiving member, the intermediate driving member includes a first large diameter portion and a first small diameter portion coaxially arranged, along the first direction, the first large diameter portion is farther away from the shell than the first small diameter portion, the first large diameter portion is combined with the first driving member, and the first small diameter portion is combined with the fourth driving member; a forced pushing portion, used to abut against the forced pushing portion in the drum box, along a second direction intersecting with the first direction, the forced pushing portion is located between the driving force receiving member and the stirring member.

[0008] In one embodiment, the developing box further includes an end cover for allowing the driving force receiving member to be exposed, and the chip assembly is disposed on any one of the end cover, the housing, the drum box, and the imaging device.

[0009] In one embodiment, the fourth driving member includes a second large diameter portion and a second small diameter portion coaxially arranged, the second large diameter portion is used to be combined with the first small diameter portion, and along the first direction, the second large diameter portion is closer to the housing than the second small diameter portion.

[0010] In one embodiment, the diameter of the second large diameter portion is greater than the diameter of the first small diameter portion.

[0011] In one embodiment, a diameter of the fourth driving member is greater than a diameter of the first small diameter portion.

[0012] In one embodiment, the drum box includes a second chip, a protrusion and a accommodating portion, the second chip has a second chip electrical contact portion for establishing a communication connection with an imaging device, the accommodating portion is used to accommodate the developing box, along a first direction, the second chip electrical contact portion is farther away from the accommodating portion than the protrusion, and the first chip electrical contact portion and the second chip electrical contact portion are located on the same side of the shell; the developing box also includes a vacant portion for cooperating with the protrusion, and along a second direction intersecting with the first direction, the vacant portion is located behind the driving force receiving member.

[0013] In one embodiment, along the second direction, the forced pushing portion and the vacant portion are respectively located on two sides of at least a portion of the chip component.

[0014] In one embodiment, the developing box further includes a powder feeding member arranged adjacent to the developing member and a bracket fixedly connected to the shell, at least one of the developing member and the powder feeding member passes through the bracket, and the forced pushing portion is arranged on the bracket.

[0015] In one embodiment, the opening is a groove provided on the end cover.

[0016] In one embodiment, when the intermediate driving member and the fourth driving member are both configured as gears, the number of teeth of the fourth driving member or the second large diameter portion is greater than the number of teeth of the first small diameter portion.

[0017] In one embodiment, the developing box further includes another stirring member and a sixth driving member disposed at the end of the other stirring member, wherein the sixth driving member is combined with the second large diameter portion or the fourth driving member.

[0018] The utility model also provides a drum box, which can be detachably installed to an imaging device, and the drum box includes a housing and a photosensitive member, the housing is used to accommodate a developing box detachably installed therein, the photosensitive member rotates around a rotation axis extending along a first direction, the drum box also includes a first chip electrical contact portion of a first chip and a second chip electrical contact portion of a second chip, the first chip electrical contact portion and the second chip electrical contact portion are both used to establish a communication connection with the imaging device, and the first chip stores parameter information of the developing box, and the second chip stores parameter information of the drum box, the developing box includes a shell for accommodating a developer; a developing member rotatably arranged in the shell around a rotation axis extending along the first direction, and used to carry the developer; an agitator A stirring member for stirring the developer; a driving force receiving member for receiving the driving force from the imaging device; characterized in that the developing box also includes a driving force transmission device, including a first driving member, an intermediate driving member and a fourth driving member, the fourth driving member is arranged at the end of the stirring member, the first driving member is coaxially arranged with the driving force receiving member, the intermediate driving member includes a first large diameter portion and a first small diameter portion coaxially arranged, along a first direction, the first large diameter portion is farther away from the shell than the first small diameter portion, the first large diameter portion is combined with the first driving member, and the first small diameter portion is combined with the fourth driving member; a forced pushing portion is used to abut with the forced pushing portion in the drum box, along a second direction intersecting with the first direction, the forced pushing portion is located between the driving force receiving member and the stirring member.

[0019] In some embodiments, the drum box is also provided with a protrusion, along the first direction, the second chip electrical contact portion is farther away from the accommodating portion than the protrusion, the first chip electrical contact portion and the second chip electrical contact portion are located on the same side of the accommodating portion, and the protrusion is used to cooperate with the vacant portion set in the developing box.

[0020] In some embodiments, the drum box also includes a drum box shell and a protrusion, the photosensitive member is rotatably arranged in the drum box shell, and the drum box shell forms the accommodating portion; along the first direction, the drum box shell has a first side plate and a second side plate arranged opposite to each other at an interval, the accommodating portion is located between the first side plate and the second side plate, and the second chip electrical contact portion and the protrusion are respectively located on both sides of the first side plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the developing box involved in the utility model.

[0022] Figure 2A It is a stereoscopic diagram of a drum box to which the developing box involved in the utility model is applicable.

[0023] Figure 2B The utility model is a schematic diagram of installing a developing box in a drum box.

[0024] Figure 3 It is a three-dimensional view of a developing box with a first forced push portion behind a hidden end cover.

[0025] Figure 4A It is a three-dimensional view of the developing box with the second forced pushing portion behind the hidden end cover.

[0026] Figure 4B is observed along the direction perpendicular to the first direction Figure 4A A plan view of the developer cartridge shown.

[0027] Figure 5 It is a side view of the developing box involved in the utility model observed along the first direction.

[0028] Figure 6 It is a side view of the developing box involved in the utility model when viewed along the first direction after the end cover is hidden. DETAILED DESCRIPTION

[0029] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0030] The developing box 100 can be directly installed in a detachable manner to an imaging device provided with a contact pin, or first installed in a detachable manner to a drum box 200 provided with a photosensitive member, and then the drum box and the developing box 100 are detachably installed together to the imaging device provided with a contact pin. Regardless of the form in which the developing box 100 is arranged, the technical solution involved in the utility model is applicable.

[0031] The drum box 200 includes a drum box shell 201, a second chip 204 and a photosensitive member 202 rotatably arranged in the drum box shell 201, the second chip 204 stores parameter information of the drum box and has a second chip electrical contact portion 204a for establishing a communication connection with an imaging device, the drum box shell 201 is formed with a accommodating portion 203 for accommodating the developing box 100, along a first direction, the drum box shell 201 has a first side plate 201a and a second side plate 201b arranged opposite to each other at an interval, the accommodating portion 203 is located between the first side plate 201a and the second side plate 201b, and the second chip electrical contact portion 204a is arranged on the same side as the first side plate 201a.

[0032] Furthermore, the second chip 204 is movably arranged relative to the drum box shell 201 to enhance the stability of the contact between the second chip electrical contact portion 204a and the imaging device. The second chip 204 can be arranged to include a substrate and a second chip electrical contact portion 204a arranged on the substrate. It should be understood that, according to the design requirements of the product, the second chip 204 can also be arranged to include a substrate, a conductive portion arranged on the substrate, and a conductor in contact with the conductive portion, one end of the conductor is in contact with the conductive portion, and the other end of the conductor is used to contact with the imaging device. In this case, the other end of the conductor should be regarded as the second chip electrical contact portion 204a.

[0033] Furthermore, the drum box 200 also includes a protrusion 205 arranged on the first side plate 201a, and along the first direction, the protrusion 205 is toward the side where the accommodating cavity 203 is located, or in other words, along the first direction, the second chip electrical contact portion 204a and the protrusion 205 are respectively located on both sides of the first side plate 201a, wherein the second chip electrical contact portion 204a is farther away from the accommodating cavity 203 than the protrusion 205.

[0034] In some embodiments, the protrusion 205 in the drum box 200 may not need to be provided, but the developer box involved in the present invention is still applicable to such a drum box 200.

[0035] The developing cartridge 100 may be received by the receiving portion 203 , and the photosensitive member is used to form an electrostatic latent image on the surface thereof, so as to receive a developer supplied from a developing member 11 described below, so that the electrostatic latent image is developed.

[0036] As shown in the figure, the developing box 100 includes a shell 1, a rotating member, a driving force receiving member 3, a driving force transmitting device 5 and a chip assembly 4, wherein the shell 1 is used to accommodate the developer, the rotating member is rotatably arranged in the shell 1, the driving force receiving member 3 is used to receive the driving force from the imaging device, and the driving force is transmitted to the rotating member through the driving force transmitting device 5. When the developing box 100 is in a state of being installed to the imaging device, the chip assembly 4 contacts the contact pin so that the developing box 100 establishes a communication connection with the imaging device, so that the imaging device can obtain the parameter information of the developing box 100 stored in the chip assembly 4.

[0037] In the following, the direction in which the rotation axis of the rotating member extends is the first direction, the direction intersecting the first direction is the second direction, and the direction intersecting the first direction and the second direction is the third direction. Preferably, the first direction, the second direction and the third direction are orthogonal, and the photosensitive member 202 also rotates around the rotation axis extending along the first direction.

[0038] Along the first direction, the driving force receiving member 3 and the chip assembly 4 are arranged on the same side of the shell 1. Generally, the developing box 100 also includes an end cover 2 fixedly connected to the shell 1, and the end cover 2 includes an end cover body 21 and an exposure hole 22 arranged on the end cover body 21. The driving force receiving member 3 is exposed through the exposure hole 22, and the chip assembly 4 can be arranged on the shell 1 or the end cover 2.

[0039] The chip assembly 4 includes a support member 41, a chip seat 42 and a first chip 43, wherein the first chip 43 stores parameter information of the developing box 100 and has a first chip electrical contact portion 431 for establishing a communication connection with the imaging device. Similar to the second chip 204, the first chip 43 can be configured to include a substrate and a first chip electrical contact portion 431 arranged on the substrate, or the first chip 43 can be configured to include a substrate, a conductive portion arranged on the substrate and a conductor in contact with the conductive portion, wherein one end of the conductor is in contact with the conductive portion, and the other end of the conductor is used to contact with the imaging device. In this case, the other end of the conductor should be regarded as the first chip electrical contact portion 431; along the first direction, the first chip electrical contact portion 431 and the second chip electrical contact portion 204a are located on the same side of the shell 1 / accommodating portion 203.

[0040] In the first chip 43, at least the first chip electrical contact portion 431 is arranged on the chip seat 42, and the chip seat 42 is movably arranged on the support member 41, and the support member 41 is fixedly connected to the shell body 1 or the end cover 2. The support member 41 and the shell body 1 or the end cover 2 can be separately arranged, or the support member 41 and the shell body 1 or the support member 41 are formed integrally with the shell body 1, or the support member 41 and the end cover 2 are formed integrally with the end cover 2. Therefore, the chip seat 42 (first chip 43) is movable relative to the shell body 1 or the end cover 2. Through such an arrangement, even if the driving force receiving member 3 of the developing box 100 vibrates during the developing process, the first chip electrical contact portion 431 can maintain stable contact with the contact pin; in an practicable manner, the chip seat 42 (first chip 43) can also be arranged in an immovable manner relative to the shell body 1 or the end cover 2.

[0041] In one embodiment, the chip assembly 4 (the first chip 43 or the first chip electrical contact portion 431) can also be provided on the drum box 200. In this case, the drum box 200 will be provided with the first chip 43 and the second chip 204 at the same time, or in other words, the drum box 200 will be provided with the first chip electrical contact portion 431 and the second chip electrical contact portion 204a at the same time. When the developer box 100 and the drum box 200 are installed together in the imaging device, the first chip 43 (the first chip electrical contact portion 431) can still establish a communication connection with the imaging device.

[0042] In one embodiment, the chip assembly 4 can also be set as an independent component. In this case, the chip assembly 4 can be set on any one of the end cover 2, the housing 1, the drum box 200 and the imaging device according to design requirements.

[0043] like Figure 1 As shown, along the first direction, the shell 1 has a first wall 1a and a second wall 1b spaced apart, the end cover 2 is fixedly mounted on the first wall 1a, the support member 41 is fixedly mounted on the end cover 2, and along the first direction, the support member 41 is arranged on the side of the end cover 2 facing away from the shell 1 / first wall 1a, so as to facilitate the assembly and disassembly of the chip assembly 4.

[0044] Furthermore, the end cover 2 also includes a groove 23 disposed on the end cover body 21. When the developer box 100 is installed to the drum box 200, the groove 23 is used to allow the corresponding protrusion 205 in the drum box 200 to enter. In some embodiments, by cooperating with the protrusion 205 in the drum box 200, the developer box 100 can be more stably supported in the drum box 200.

[0045] It is understandable that the groove 23 should not necessarily be limited to the end cover body 21. For example, by changing the structure of the end cover 2, a vacant portion is formed at the position where the groove 23 was originally set. When the developer box 100 is installed to the drum box 200, the protrusion 205 in the drum box 200 can also enter the vacant portion. It can be seen from this that a vacant portion is provided in the developer box 100 to allow the protrusion 205 in the drum box 200 to enter, and along the second direction, the vacant portion is located behind the chip assembly 4 / driving force receiving member 3.

[0046] like Figure 4A , Figure 5 and Figure 6 As shown, the rotating member includes a stirring member (first stirring member) 13 for stirring the developer and a developing member 11 for carrying the developer. When the developing box 100 is developing, the stirring of the stirring member 13 can prevent the developer from agglomerating. At the same time, the developer is transported toward the developing member 11. The developing member 11 is used to supply the developer it carries toward the photosensitive member, so that the electrostatic latent image formed on the photosensitive member can be developed. In some embodiments, the rotating member also includes a powder feeding member 12 arranged adjacent to the developing member 11, and the powder feeding member 12 is in contact with the developing member 11, and is used to supply the developer to the developing member 11.

[0047] Furthermore, the developing box 100 also includes a handle 14 connected to the shell 1, and the user can install and remove the developing box 100 by grasping the handle 14. Along the second direction, the developing component 11 and the handle 14 are respectively located at both ends of the shell 1. When the developing box 100 is installed, the developing component 11 faces forward and the handle 14 is located at the rear of the shell 1.

[0048] [Drive force transmission device]

[0049] like Figure 3 , Figure 4A and Figure 4B As shown, the driving force transmission device 5 includes a first transmission member 51, a second transmission member 52, a third transmission member 53, a fourth transmission member 54 and a fifth transmission member 55, wherein the first transmission member 51 is coaxially arranged with the driving force receiving member 3, and is used to transmit the driving force of the driving force receiving member 3 to the second driving member 52, the third driving member 53 and the fifth driving member 55, the second driving member 52 is arranged at the end of the powder feeding member 12, the fifth driving member 55 is arranged at the end of the developing member 11, the third driving member 53 serves as an intermediate driving member, and is also combined with the fourth driving member 54, and the fourth driving member 54 is arranged at the end of the stirring member 13, so that the driving force output by the first driving member 51 can drive the developing member 11, the powder feeding member 12 and the stirring member 13 to rotate.

[0050] The third driving member 53 includes a first large diameter portion 531 and a first small diameter portion 532 which are coaxially arranged, and the fourth driving member 54 includes a second large diameter portion 541 and a second small diameter portion 542 which are coaxially arranged, wherein the first large diameter portion 531 is combined with the first driving member 51, the first small diameter portion 532 is combined with the second large diameter portion 541, and the second small diameter portion 542 is used to transmit the driving force. Therefore, the third driving member 53 and the fourth driving member 54 can be arranged such that, along the first direction, the first large diameter portion 531 is larger than the first small diameter portion 532. The diameter portion 532 is farther away from the shell body 1 / first wall 1a, or in other words, the first large diameter portion 531 is closer to the chip assembly 4 than the first small diameter portion 532, and the second large diameter portion 541 is closer to the shell body 1 / first wall 1a than the second small diameter portion 542, or in other words, the second large diameter portion 541 is farther away from the chip assembly 4 than the second small diameter portion 542, and the diameter of the second large diameter portion 541 is larger than the diameter of the first small diameter portion 532, so that the rotation speed of the stirring member 13 can be reduced, and the noise generated when the stirring member 13 rotates can be reduced.

[0051] According to the design requirements of the developing cartridge 100, for example, the driving force output by the second small diameter portion 542 can be used to drive the counting component to rotate, or to drive other rotating parts to rotate. In practice, if there are no other parts that need to be driven in the developing cartridge 100, the second small diameter portion 542 can also be omitted, such as Figure 4A As shown, the fourth driving member 54 is only provided with the second large diameter portion 541 , and at this time the diameter of the fourth driving member 54 is still greater than the diameter of the first small diameter portion 532 .

[0052] Preferably, each driving member in the driving force transmission device 5 is configured as a gear. In this case, the first large diameter portion 531 is the first large gear, the first small diameter portion 532 is the first small gear, the second large diameter portion 541 is the second large gear, and the second small diameter portion 542 is the second small gear. The number of teeth of the fourth driving member 54 (the second large diameter portion 541) will be greater than the number of teeth of the first small diameter portion 532.

[0053] In one embodiment, each driving member may also be configured as a ratchet, a friction wheel, etc.

[0054] In one embodiment, Figure 6 As shown, another stirring member (second stirring member) 17 and a sixth driving member 56 located at the end of the other stirring member 17 can also be provided in the developing box 100. Along the second direction, the first stirring member 13 is located in front of the second stirring member 17. The sixth driving member 56 is directly or indirectly combined with the second large diameter portion 541 to drive the second stirring member 17 to rotate. When the first small diameter portion 532 is cancelled, the sixth driving member 56 will be directly or indirectly combined with the fourth driving member 54 to drive the second stirring member 17 to rotate.

[0055] [Forced to push]

[0056] In order to keep the developing member 11 and the photosensitive member in a state of being close to each other, the developing box 100 also includes a forced pushing portion 16. When the developing box 100 is installed on the drum box 200, the forced pushing portion 16 abuts against the forced pushing portion provided in the drum box 200; when observed along the first direction, the forced pushing portion 16 is located within the range of the driving force transmission device 5, and along the second direction intersecting with the first direction, the forced pushing portion 16 is located between the driving force receiving member 3 and the stirring member 13, especially, the forced pushing portion 16 is arranged adjacent to the fourth driving member 54, which makes it very likely that the forced pushing portion 16 will interfere with the fourth driving member 54 (the second large diameter portion 541). The following introduces an implementation method for avoiding interference between the forced pushing portion 16 and the fourth driving member 54.

[0057] Method 1: Figure 3 As shown, the developing box 100 also includes a bracket 15 fixedly connected to the shell 1, and at least one of the developing part 11 and the powder feeding part 12 is supported by passing through the bracket 15. The forced pushing part 16 is arranged on the bracket 15, so that the forced pushing part 16 can avoid the second large diameter part 541.

[0058] The second method is to reduce the size of the forced pushing portion 16 or the size of the fourth driving member 54 (the second large diameter portion 541 ) so as to avoid interference between the forced pushing portion 16 and the fourth driving member 54 (the second large diameter portion 541 ).

[0059] Method three, such as Figure 4A and Figure 4B As shown, the forced push portion 16 is configured to include a first part 161 and a second part 162 that are connected to each other. In a direction intersecting with the first direction, the size of the first part 161 is different from the size of the second part 162. As shown in the figure, along the direction intersecting with the first direction, the second part 162 is opposite to the second large diameter portion 541, and the size of the first part 161 is larger than the size of the second part 162.

[0060] In the above-mentioned method 2 and method 3, the forced pushing portion 16 can be arranged on any one of the housing 1 and the end cover 2 .

[0061] [Beneficial Effects]

[0062] 1. As Figure 5As shown, when observed along the first direction, at least a portion of the fourth driving member 54 overlaps with the chip assembly 4, and the second large diameter portion 541 is arranged farther away from the shell 1 / first wall 1a than the second small diameter portion 542, or in other words, the second large diameter portion 541 is arranged closer to the chip assembly 4 / first chip 43 than the second small diameter portion 542. In the process of transmitting the driving force by the driving force transmission device 5, the shaking amplitude generated by the second large diameter portion 541 is significantly greater than the shaking amplitude generated by the second small diameter portion 542, which makes it easier for the chip assembly 4 / first chip 43 to break away from the contact pin.

[0063] In the utility model, when the second large diameter portion 541 is arranged closer to the shell body 1 / first wall 1a than the second small diameter portion 542, the second large diameter portion 541 with a larger shaking amplitude is arranged farther away from the chip assembly 4 / first chip 43, which is beneficial to reduce the impact of shaking on the chip assembly 4 / first chip 43 and improve the stability of the contact between the chip assembly 4 / first chip 43 and the contact pin.

[0064] 2. Along the second direction, the forced pushing portion 16 and the groove 23 (vacant portion) are respectively located on both sides of at least a portion of the chip assembly 4, or in other words, the forced pushing portion 16 and the groove 23 (vacant portion) are respectively located on both sides of at least a portion of the first chip 43. When the developing box 100 is in an installed state, the forced pushing portion 16 abuts against the forced pushing portion provided in the drum box 200, and the groove 23 (vacant portion) contacts the protrusion in the drum box 200. In this way, both ends of the chip assembly 4 (first chip 43) are positioned, so that the chip assembly 4 can be stably maintained, and accordingly, the first chip 43 can form a stable contact with the contact pin.

Claims

1. A developing box, used to cooperate with a drum box, wherein the drum box and the developing box are detachably mounted to an imaging device provided with a stylus, and the developing box comprises: A housing for containing a developer; A developing member, rotatably disposed in the housing about a rotation axis extending along a first direction, and configured to carry a developer; A stirring member, used for stirring the developer; A driving force receiving member, used for receiving a driving force from an imaging device; A chip assembly having a first chip electrical contact portion for contacting the contact pin; Characterized in that the developing box also includes, A driving force transmission device, comprising a first driving member, an intermediate driving member and a fourth driving member, wherein the fourth driving member is arranged at the end of the stirring member, the first driving member is coaxially arranged with the driving force receiving member, the intermediate driving member comprises a first large diameter portion and a first small diameter portion coaxially arranged, along a first direction, the first large diameter portion is farther away from the housing than the first small diameter portion, the first large diameter portion is combined with the first driving member, and the first small diameter portion is combined with the fourth driving member; The forced pushing portion is used to abut against the forced pushing portion in the drum cartridge, and along a second direction intersecting with the first direction, the forced pushing portion is located between the driving force receiving member and the stirring member.

2. The developing cartridge according to claim 1, characterized in that: The developing box further includes an end cover for allowing the driving force receiving member to be exposed, and the chip assembly is provided on any one of the end cover, the housing, the drum box, and the image forming device.

3. The developing cartridge according to claim 2, characterized in that: The fourth driving member includes a second large diameter portion and a second small diameter portion coaxially arranged, the second large diameter portion is used to be combined with the first small diameter portion, and along the first direction, the second large diameter portion is closer to the housing than the second small diameter portion.

4. The developing cartridge according to claim 3, characterized in that: The diameter of the second large diameter portion is larger than the diameter of the first small diameter portion.

5. The developing cartridge according to claim 2, characterized in that: The diameter of the fourth driving member is larger than the diameter of the first small diameter portion.

6. The developing cartridge according to claim 2, characterized in that: The drum cartridge includes a second chip, a protrusion and a receiving portion, the second chip having a second chip electrical contact portion for establishing a communication connection with an imaging device, the receiving portion for receiving a developing cartridge, the second chip electrical contact portion being farther away from the receiving portion than the protrusion along a first direction, and the first chip electrical contact portion and the second chip electrical contact portion being located on the same side of the housing; The developing box also includes a vacant portion for cooperating with the protrusion, and the vacant portion is located behind the driving force receiving member along a second direction intersecting with the first direction.

7. The developing cartridge according to claim 6, wherein: Along the second direction, the forced pushing portion and the vacant portion are respectively located on two sides of at least a portion of the chip component.

8. The developing cartridge according to claim 7, wherein: The developing box also includes a powder feeding member arranged adjacent to the developing member and a bracket fixedly connected to the shell. At least one of the developing member and the powder feeding member passes through the bracket, and the forced pushing portion is arranged on the bracket.

9. The developing cartridge according to claim 6, wherein: The vacant portion is a groove arranged on the end cover.

10. The developing cartridge according to any one of claims 1, 5 to 9, characterized in that: When the intermediate driving member and the fourth driving member are both configured as gears, the number of teeth of the fourth driving member is greater than the number of teeth of the first small diameter portion.

11. The developing cartridge according to claim 3 or 4, characterized in that: When the intermediate driving member and the fourth driving member are both configured as gears, the number of teeth on the second large diameter portion is greater than the number of teeth on the first small diameter portion.

12. The developer cartridge according to claim 1 or 2, characterized in that: The developing box also includes another stirring member and a sixth driving member arranged at the end of the other stirring member, and the sixth driving member is combined with the second large diameter portion or the fourth driving member.

13. A drum cartridge, detachably mounted to an imaging device, the drum cartridge comprising a housing portion and a photosensitive member, the housing portion being used to accommodate a developing cartridge detachably mounted therein, the photosensitive member rotating about a rotation axis extending along a first direction, characterized in that: The drum cartridge further comprises a first chip electrical contact portion of the first chip and a second chip electrical contact portion of the second chip, wherein the first chip electrical contact portion and the second chip electrical contact portion are both used to establish a communication connection with the imaging device, and the first chip stores parameter information of the developing cartridge, and the second chip stores parameter information of the drum cartridge; The developer box includes: A housing for containing a developer; A developing member, rotatably disposed in the housing about a rotation axis extending along a first direction, and configured to carry a developer; A stirring member, used for stirring the developer; A driving force receiving member, used for receiving a driving force from an imaging device; Characterized in that the developing box also includes, A driving force transmission device, comprising a first driving member, an intermediate driving member and a fourth driving member, wherein the fourth driving member is arranged at the end of the stirring member, the first driving member is coaxially arranged with the driving force receiving member, the intermediate driving member comprises a first large diameter portion and a first small diameter portion coaxially arranged, along a first direction, the first large diameter portion is farther away from the housing than the first small diameter portion, the first large diameter portion is combined with the first driving member, and the first small diameter portion is combined with the fourth driving member; The forced pushing portion is used to abut against the forced pushing portion in the drum cartridge, and along a second direction intersecting with the first direction, the forced pushing portion is located between the driving force receiving member and the stirring member.

Images