Developing box and processing box

Abstract

The present invention relates to a developing cartridge detachably mounted to an image forming apparatus, the developing cartridge comprising: a developing housing partitioned into a developer chamber for accommodating a developer and a developing chamber by a partition plate provided therein, the partition plate having a communicating hole and an upper surface facing the developer chamber and a lower surface facing the developing chamber, the communicating hole penetrates through the upper surface and the lower surface, and a developing agent in the developing agent cavity enters the developing cavity through the communicating hole; the developing roller is rotatably arranged in the developing cavity and is used for bearing a developing agent; the rotating part is rotatably arranged in the developing agent cavity; the sealing assembly is located above the upper surface and connected with the rotating part, along with rotation of the rotating part, the sealing assembly is converted into a sealing releasing state from a sealing state, in the sealing state, the sealing assembly seals the communicating hole, in the sealing releasing state, the sealing assembly does not seal the communicating hole, and therefore the sealing assembly can seal the communicating hole. The action of releasing the sealing of the sealing assembly does not need to be performed by an end user.

Description

Technical Field

[0001] The present invention relates to the field of electrophotographic imaging, and particularly to a developing cartridge and a processing cartridge that are detachably mounted in an electrophotographic imaging device. Background Art

[0002] A developing cartridge is a container detachably mounted to an imaging device. The developing cartridge includes a developing housing and a developing roller rotatably disposed in the developing housing. A developer for development is accommodated in the developing housing. The developing roller is used to carry the developer and supply the developer to a photosensitive drum disposed opposite to the developing roller, so that an electrostatic latent image formed on the photosensitive drum is developed.

[0003] Furthermore, the developing cartridge is also provided with a seal. Before the developing cartridge is used by a user, the developer is sealed by the seal and will not leak. Before the user mounts the developing cartridge to the imaging device, the user needs to manually open the seal. Otherwise, even if the developing cartridge is correctly mounted to the imaging device, since the developer cannot be carried by the developing roller, imaging still cannot be achieved. Summary of the Invention

[0004] In view of this, the present invention provides a developing cartridge adopting the following technical solution and a processing cartridge having the developing cartridge to solve the above technical problems. Specifically:

[0005] A developing cartridge is detachably mounted to an imaging device. The developing cartridge includes: a developing housing separated by a partition disposed therein into a developer chamber and a developing chamber. The developer chamber is used to accommodate the developer. The partition has a communication hole and an upper surface facing the developer chamber and a lower surface facing the developing chamber. The communication hole penetrates through the upper surface and the lower surface. The developer in the developer chamber enters the developing chamber through the communication hole; a developing roller rotatably disposed in the developing chamber for carrying the developer; a rotating member rotatably disposed in the developer chamber; a sealing assembly located above the upper surface and connected to the rotating member. As the rotating member rotates, the sealing assembly changes from a sealed state to an unsealed state. In the sealed state, the sealing assembly seals the communication hole. In the unsealed state, the sealing assembly does not seal the communication hole.

[0006] In some embodiments, the sealing assembly includes a seal and a carrier. The carrier is used to carry the seal. The seal is removably disposed on the carrier. The seal includes a connecting portion and a sealing portion connected to each other. The sealing portion is used to seal the communication hole. The connecting portion is used to connect to the rotating member; the carrier includes a plurality of side plates and an opening located between the plurality of side plates. The sealing portion is mounted on the plurality of side plates. The opening is opposite to the communication hole; at least the seal is located above the upper surface of the partition.

[0007] In some embodiments, the seal is installed by welding, and the welding wires for welding the seal are disposed on the carrier or the seal; the welding wires include a plurality of welding wires disposed around the opening, and a protective space for accommodating the developer is formed between adjacent two welding wires.

[0008] In some embodiments, along the rotation direction of the rotating member, the welding wires located upstream of the opening and the welding wires located downstream of the opening both include a welding wire body and a protruding portion protruding from the welding wire body; among the welding wires located upstream of the opening, the protruding portion protrudes from the welding wire body toward the opening; among the welding wires located downstream of the opening, the protruding portion protrudes from the welding wire body away from the opening.

[0009] In some embodiments, among the welding wires located upstream of the opening, the protruding portion provided in the welding wire closest to the opening has at least one corner, and among the welding wires located downstream of the opening, the protruding portion provided in the welding wire farthest from the opening has at least one corner, and the tip of the corner faces the same direction as the rotation direction.

[0010] In some embodiments, among the welding wires located downstream of the opening, at least one of the left and right ends of the welding wire farthest from the opening is provided with a protruding portion.

[0011] In some embodiments, along the rotation direction of the rotating member, at least any two of the protruding portions are oppositely disposed.

[0012] In some embodiments, the rotating member includes a shaft body and a reinforcing portion connected to the shaft body, and the reinforcing portion is used to enhance the strength of the seal.

[0013] In some embodiments, the reinforcing portion is provided as at least one protrusion protruding from the shaft body.

[0014] The present invention also provides a processing cartridge, the processing cartridge includes a drum cartridge and the developing cartridge as described above, and the developing cartridge is movably connected to the drum cartridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a perspective view of the processing cartridge related to the present invention.

[0016] Figure 2 is Figure 1 a cross-sectional view taken along the AA direction in

[0017] Figure 3 is an exploded view of the seal assembly related to the present invention after being separated from the developing housing.

[0018] Figure 4 is a plan view of the carrier in the seal assembly related to the present invention.

[0019] Figure 5It is an exploded view of some components at the driving end of the processing cartridge according to the present invention.

[0020] Figure 6 It is a perspective view of the follower in the processing cartridge according to the present invention.

[0021] Figure 7 It is a perspective view observed from the front upper side after the conversion component is installed on the processing cartridge.

[0022] Figure 8A It is a state diagram when the driving member and the driven member in the conversion component cannot transmit the driving force.

[0023] Figure 8B It is a state diagram when the driving member and the driven member in the conversion component can transmit the driving force. Detailed implementation manners

[0024] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0025]

Basic structure of the processing cartridge

[0026] Figure 1 It is a perspective view of the processing cartridge according to the present invention; Figure 2 It is along Figure 1 The cross-sectional view taken along the AA direction in

[0027] As Figure 1 shown, the processing cartridge 100 includes a developing cartridge 10 and a drum cartridge 20 which are movably connected to each other. The developing cartridge 10 includes a developing housing 11 and a developing roller 12 rotatably provided in the developing housing 11. The drum cartridge 20 includes a drum housing 21 and a photosensitive drum 22 rotatably provided in the drum housing 21. The developing roller 12 and the photosensitive drum 22 are arranged opposite to each other. The developing roller 12 has a rotation axis L1 and is used to carry the developer T (as Figure 2 shown) accommodated in the developing housing 11. When the processing cartridge 100 performs imaging, an electrostatic latent image is formed on the surface of the photosensitive drum 22. The developing roller 12 is used to supply the developer T to the photosensitive drum 22 so that the electrostatic latent image is developed.

[0028] Furthermore, the processing cartridge 100 further includes a driving force receiving component for receiving the driving force from the imaging device. The driving force receiving component is used to directly or indirectly drive the developing roller 12 and the photosensitive drum 22 to rotate.

[0029] In some embodiments, the driving force receiving component includes a first driving force receiving member 31 and a second driving force receiving member 32. Among them, the first driving force receiving member 31 is used to receive the driving force from the imaging device to directly or indirectly drive the developing roller 12 to rotate, and the second driving force receiving member 32 is used to receive the driving force from the imaging device to directly or indirectly drive the photosensitive drum 22 to rotate.

[0030] In some embodiments, only one of the first driving force receiving member 31 and the second driving force receiving member 32 may be provided, and the driving force is received from the imaging device through the first driving force receiving member 31 or the second driving force receiving member 32 to directly or indirectly drive the developing roller 12 and the photosensitive drum 22 to rotate.

[0031] Furthermore, the processing cartridge 100 further includes a first end cap 300 and a second end cap 400 respectively located at both ends of the processing cartridge 100. The developing cartridge 10 and the drum cartridge 20 are connected through the first end cap 300 and the second end cap 400, and the driving force receiving assembly is exposed outward through the first end cap 300.

[0032] In some embodiments, at least one of the first end cap 300 and the second end cap 400 is integrally formed with the drum housing 21. At this time, at least one of the first end cap 300 and the second end cap 400 will be regarded as a part of the drum cartridge 20.

[0033] As Figure 2 shown, the processing cartridge 100 further includes an elastic member 23 disposed between the developing housing 11 and the drum housing 21. The elastic member 23 is used to force the developing roller 12 and the photosensitive drum 22 to remain in contact.

[0034] In some embodiments, the processing cartridge 100 further includes a powder feeding roller 13 rotatably disposed in the developing housing 11. The powder feeding roller 13 is in contact with the developing roller 12, and during the imaging process of the processing cartridge 100, the powder feeding roller 13 supplies the developer T to the developing roller 12.

[0035] For the convenience of the following description, it is defined that the direction parallel to the rotation axis L1 is the left - right direction, the direction intersecting with the left - right direction is the front - back direction, and the direction intersecting with both the left - right direction and the front - back direction is the up - down direction. Preferably, the left - right direction, the front - back direction, and the up - down direction are orthogonal. Specifically, along the left - right direction, the side where the driving force receiving assembly is located is the driving side / left side, and the side opposite to the driving side / left side is the non - driving side / right side. The developing cartridge 10 and the drum cartridge 20 are arranged in the front - back direction, wherein the drum cartridge 20 is located in front of the developing cartridge 10, or in other words, the photosensitive drum 22 is located in front of the developing roller 12. Along the up - down direction, the side where the photosensitive drum 22 and the developing roller 12 are provided is the lower side, and the side where the photosensitive drum 22 and the developing roller 12 are not provided is the upper side. When the processing cartridge 100 is installed in the imaging device, the side where the photosensitive drum 22 and the developing roller 12 are provided is at the lower side.

[0036]

Stirring Assembly and Sealing Assembly

[0037] As Figure 2As shown, a developing housing 11 encloses to form a receiving cavity 14. The developing cartridge 10 further includes a partition 15 disposed in the developing housing 11. The partition 15 has a communication hole (developer supply port) 151, and the partition 15 divides the receiving cavity 14 into a developer cavity 14a and a developing cavity 14b. The communication hole 151 communicates the developer cavity 14a and the developing cavity 14b. The developer cavity 14a is used to store the developer T. A developing roller 12 is rotatably disposed in the developing cavity 14b. The partition 15 has opposite upper and lower surfaces 15a and 15b. The upper surface 15a faces the developer cavity 14a, and the lower surface 15b faces the developing cavity 14b. The communication hole 151 passes through the upper surface 15a and the lower surface 15b. The developer T in the developer cavity 14a can enter the developing cavity 14b through the communication hole 151.

[0038] In some embodiments, the developing cartridge 10 further includes a powder feeding roller 13 rotatably disposed in the developing cavity 14b. The powder feeding roller 13 contacts the developing roller 12, and the powder feeding roller 13 supplies the developer entering the developing cavity 14b to the developing roller 12. It should be understood that the powder feeding roller 13 may not be provided. In this case, the developer T entering the developing cavity 14b can be directly carried by the developing roller 12.

[0039] Further, the developing cartridge 10 further includes a rotating member 16 and a sealing assembly 4. The rotating member 16 is rotatably disposed in the developer cavity 14a. The sealing assembly 4 is located above the upper surface 15a. Specifically, the sealing assembly 4 is disposed on the upper surface 15 and connected to the rotating member 16. The sealing assembly 4 is used to seal the communication hole 151 to prevent the developer T in the developer cavity 14a from entering the developing cavity 14b through the communication hole 151 before the processing cartridge 100 reaches the end user, thereby causing developer leakage or moisture absorption. That is, before the end user starts using the processing cartridge 100, the communication hole 151 should be in a state sealed by the sealing member assembly 4. The sealing assembly 4 is configured such that as the rotating member 16 rotates, the sealing assembly 4 changes from a sealed state to an unsealed state.

[0040] The rotating member 16 is integrally elongated and can rotate about its rotation axis. The rotating member 16 includes a shaft body 161 and a coupling portion 162 disposed on the shaft body 161. The coupling portion 162 is used to connect to the sealing assembly 4. Thus, a part of the sealing assembly 4 can move relative to the developing housing 11 following the rotation of the rotating member 16.

[0041] Figure 3 is an exploded view of the separation of the sealing assembly related to the present invention from the developing housing; Figure 4 is a plan view of the carrier in the sealing assembly related to the present invention.

[0042] As Figure 3 andFigure 4 As shown, the sealing assembly 4 includes a carrier 41 and a seal 42. The carrier 41 is fixedly arranged on the partition plate 15 and is used to carry the seal 42. The seal 42 is used to seal the communication hole 151 and is arranged between the carrier 41 and the rotating member 16. Or rather, one end of the seal 42 is connected to the carrier 41 and the other end is connected to the rotating member 16. Therefore, the seal 42 can move relative to the developing housing 11 following the rotation of the rotating member 16. Eventually, the seal 42 changes from the sealed state of the communication hole 151 to the unsealed state where it no longer seals the communication hole 151.

[0043] The seal 42 is arranged on the carrier 41 in a removable manner. For example, the seal 42 is pasted on the carrier 41, or the seal 42 is welded to the carrier 41, or, through the action of magnetic attraction, the seal 42 is carried by the carrier 41. Hereinafter, the example where the seal 42 is welded to the carrier 41 will be used for illustration.

[0044] The seal 42 includes a connecting portion 421 and a sealing portion 422 which are connected to each other. Among them, the sealing portion 422 is used to seal the communication hole 151, and the connecting portion 421 is provided with a portion to be joined 423. By joining the joining portion 162 and the portion to be joined 423 to each other, the seal 42 is connected to the rotating member 16. For example, one of the joining portion 162 and the portion to be joined 423 is set as a protrusion, and the other is set as a groove or a through hole, and the joining portion 162 and the portion to be joined 423 are joined by welding; in other achievable ways, the joining manner of the joining portion 162 and the portion to be joined 423 can also be adhesion, snap connection, etc.

[0045] As Figure 2 shown, when the rotating member 16 rotates along the rotation direction r, the connecting portion 421 is pulled by the rotating member 16 and gradually wound around the rotating member 16. In the state where the connecting portion 421 is tightened, as the rotating member 16 continues to rotate, the connecting portion 421 will pull the sealing portion 422, causing the sealing portion 422 to change from the sealed state to the unsealed state.

[0046] Generally, before the user starts using the processing cartridge 100, to prevent the sealing failure of the sealing portion 422, it is better that the sealing portion 422 is welded to the carrier 41 as tightly as possible. However, when the rotating member 16 rotates, the sealing portion 422 should be able to be easily pulled. Otherwise, the seal 42 may be broken, and the driving component for driving the rotation of the rotating member 16, and even the driving force receiving assembly and the driving force output member in the imaging device for outputting the driving force to the driving force output assembly will also be damaged. Therefore, the present invention adopts the following technical solution to enable the sealing portion 422 to have both a good sealing effect and be easily pulled by the rotating member 16.

[0047] AsFigure 4 As shown, the carrier 41 includes a plurality of side plates and an opening 410 located between the plurality of side plates. The sealing portion 422 is mounted on the plurality of side plates. When the carrier 41 is installed, the plurality of side plates face the partition 15 and are connected to each other. The opening 410 faces the communication hole 151. Similarly, the connection manner between the plurality of side plates and the partition 51 is various, such as bonding, welding, magnetic connection, etc., as long as the carrier 41 can be fixed to the partition 15. Through the opening 410 and the communication hole 151, the developer T can flow between the developer chamber 14a and the developing chamber 14b.

[0048] In some embodiments, the carrier 41 includes four side plates that are pairwise opposite, specifically, the first side plate 41a and the third side plate 41c that are oppositely arranged, and the second side plate 41b and the fourth side plate 41d that are oppositely arranged. Among them, the lengths of the first side plate 41a and the third side plate 41c are both greater than the lengths of the second side plate 41b and the fourth side plate 41d. Preferably, the lengths of the first side plate 41a and the third side plate 41c are equal, and the lengths of the second side plate 41b and the fourth side plate 41d are equal. Both ends of the first side plate 41a and both ends of the third side plate 41c are respectively connected to the second side plate 41b and the fourth side plate 41d. That is to say, the first side plate 41a, the second side plate 41b, the third side plate 41c, and the fourth side plate 41d are sequentially connected and enclose the opening 410.

[0049] Furthermore, each side plate of the carrier 41 is provided with bonding wires, and the bonding wires include a first bonding wire 411 and a second bonding wire 412. The first bonding wire 411 and the second bonding wire 412 are both arranged around the opening 410, and the first bonding wire 411 and the second bonding wire 412 are spaced apart from each other. The first bonding wire 411 is farther away from the opening 410 than the second bonding wire 412, and a protection space 416 is formed between the two. In this way, even if one of the first bonding wire 411 and the second bonding wire 412 is disconnected from the sealing portion 422 (weld detachment or poor welding), the other of the first bonding wire 411 and the second bonding wire 412 can still maintain a good connection with the sealing portion 422.

[0050] Since the second bonding wire 412 is closer to the opening 410 than the first bonding wire 411, the bonding area formed by the second bonding wire 412 may be smaller than that of the first bonding wire 411, resulting in a higher likelihood of solder joint detachment or poor soldering between the second bonding wire 412 and the sealing portion 422. When a part of the second bonding wire 412 is detached from the sealing portion 422, a notch allowing the developer T to pass through will be formed in the second bonding wire 412. As a result, the developer T enters the protection space 416 and exerts a squeezing force on the first bonding wire 411. However, with the presence of the second bonding wire 412, the total amount of the developer entering the protection space 416 is limited, and the squeezing force exerted on the first bonding wire 411 by the developer T is smaller, thereby reducing the risk of the first bonding wire 411 being detached from the sealing portion 422.

[0051] The first bonding wire 411 includes a first outer bonding wire 411a provided on the first side plate 41a, a second outer bonding wire 411b provided on the second side plate 41b, a third outer bonding wire 411c provided on the third side plate 41c, and a fourth outer bonding wire 411d provided on the fourth side plate 41d. The first outer bonding wire 411a and the third outer bonding wire 411c are oppositely arranged, the second outer bonding wire 411b and the fourth outer bonding wire 411d are oppositely arranged, and both ends of the first outer bonding wire 411a and both ends of the third outer bonding wire 411c are connected to the second outer bonding wire 411b and the fourth outer bonding wire 411d. That is to say, the first outer bonding wire 411a, the second outer bonding wire 411b, the third outer bonding wire 411c, and the fourth outer bonding wire 411d are connected in sequence, and the opening 410 is located between the first outer bonding wire 411a, the second outer bonding wire 411b, the third outer bonding wire 411c, and the fourth outer bonding wire 411d.

[0052] Along the rotation direction r of the rotating member 16, the first outer bonding wire 411a is located downstream of the opening 410, and the third outer bonding wire 411c is located upstream of the opening 410. Compared with the third outer bonding wire 411c, the sealing portion 422 will be detached from the first outer bonding wire 411a first. The first outer bonding wire 411a includes a first outer bonding wire main body 411a1 and at least one first protrusion 411a2. Along the rotation direction r, the first protrusion 411a2 protrudes from the first outer bonding wire main body 411a1 in a direction away from the opening 410. The third outer bonding wire 411c includes a third outer bonding wire main body 411c1 and at least one second protrusion 411c2. Along the rotation direction r, the second protrusion 411c2 protrudes from the third outer bonding wire main body 411c1 in a direction towards the opening 410.

[0053] In some embodiments, the first outer bonding wire 411a further includes at least one of a third protrusion 411a3 and a fourth protrusion 411a4. The third protrusion 411a3 is located at the junction of the first outer bonding wire 411a and the second outer bonding wire 411b, and the fourth protrusion 411a4 is located at the junction of the first outer bonding wire 411a and the fourth outer bonding wire 411d. In other words, the third protrusion 411a3 and the fourth protrusion 411a4 are respectively located at the left and right ends of the first outer bonding wire 411a. Thus, the third protrusion 411a3 can also be regarded as a part of the second outer bonding wire 411b, and the fourth protrusion 411a4 can also be regarded as a part of the fourth outer bonding wire 411d. Along the rotation direction r, both the third protrusion 411a3 and the fourth protrusion 411a4 protrude away from the opening 410.

[0054] The second bonding wire 412 includes a first inner bonding wire 412a disposed on the first side plate 41a, a second inner bonding wire 412b disposed on the second side plate 41b, a third inner bonding wire 412c disposed on the third side plate 41c, and a fourth inner bonding wire 412d disposed on the fourth side plate 41d. The first inner bonding wire 412a and the third inner bonding wire 412c are oppositely disposed, and the second inner bonding wire 412b and the fourth inner bonding wire 412d are oppositely disposed. Both ends of the first inner bonding wire 412a and both ends of the third inner bonding wire 412c are connected to the second inner bonding wire 412b and the fourth inner bonding wire 412d. That is to say, the first inner bonding wire 412a, the second inner bonding wire 412b, the third inner bonding wire 412c, and the fourth inner bonding wire 412d are sequentially connected, and the opening 410 is located among the first inner bonding wire 412a, the second inner bonding wire 412b, the third inner bonding wire 412c, and the fourth inner bonding wire 412d.

[0055] Along the rotation direction r of the rotating member 16, the first inner bonding wire 412a is located downstream of the opening 410, and the third inner bonding wire 412c is located upstream of the opening 410. Compared with the third inner bonding wire 412c, the sealing portion 422 will disconnect from the first inner bonding wire 412a first. The first inner bonding wire 412a includes a first inner bonding wire main body 412a1 and at least one fifth protrusion 412a2. Along the rotation direction r, the fifth protrusion 412a2 protrudes from the first inner bonding wire main body 412a1 away from the opening 410. The third inner bonding wire 412c includes a third inner bonding wire main body 412c1 and at least one sixth protrusion 412c2. Along the rotation direction r, the second protrusion 412c2 protrudes from the second inner bonding wire main body 412c1 toward the opening 410.

[0056] In some embodiments, at least one of the third protrusion 411a3 and the fourth protrusion 411a4 is provided, and the first inner bonding wire 412a may also be provided with a protrusion similar to at least one of the third protrusion 411a3 and the fourth protrusion 411a4. That is to say, at least one of the left and right ends of the first inner bonding wire 412a may also be provided with a protrusion protruding in a direction away from the opening 410, so that the sealing portion 422 can be smoothly separated from the second bonding wire 412.

[0057] To enable the sealing portion 422 to be more smoothly separated from the carrier 41, the first protrusion 411a2, the second protrusion 411c2, the fifth protrusion 412a2, and the sixth protrusion 412c2 have the following deformation modes:

[0058] In some embodiments, a plurality of the first protrusion 411a2, the second protrusion 411c2, the fifth protrusion 412a2, and the sixth protrusion 412c2 are all arranged at intervals in the left-right direction.

[0059] In some embodiments, along the rotation direction r, at least any two of the first protrusion 411a2, the second protrusion 411c2, the fifth protrusion 412a2, and the sixth protrusion 412c2 are oppositely arranged.

[0060] In some embodiments, at least one of the first protrusion 411a2, the second protrusion 411c2, the fifth protrusion 412a2, and the sixth protrusion 412c2 is generally triangularly arranged. Preferably, one angle of the triangle is approximately oriented towards the rotation direction r. Thus, the sealing portion 422 can be separated from the connection with this angle first, and then gradually expanded to separate the sealing portion 422 from the protrusion, and finally, the sealing portion 422 can be easily separated from the bonding wire.

[0061] In some embodiments, at least one of the first protrusion 411a2, the second protrusion 411c2, the fifth protrusion 412a2, and the sixth protrusion 412c2 is generally arc-shaped. Preferably, the line connecting the vertex of the arc and the center of the arc is substantially parallel to the rotation direction r. Thus, the sealing portion 422 can be separated from the connection with the vertex of the arc first, and then gradually expanded to separate the sealing portion 422 from the protrusion, and finally, the sealing portion 422 can be easily separated from the bonding wire.

[0062] In some embodiments, the shapes of the first protrusion 411a2, the second protrusion 411c2, the fifth protrusion 412a2, and the sixth protrusion 412c2 can be set not only to be generally triangular or generally arc-shaped as described above, but also to regular polygons such as rhombus, pentagon, hexagon, etc., or to irregular polygons, as long as the protrusion has at least one angle and the tip of the angle faces in the same direction as the rotation direction r, so as to facilitate the disconnection of the sealing portion 422 from the carrier 41.

[0063] In summary, in the first bonding wire 411 and the second bonding wire 412, at least one first protrusion 411a2 is provided on the first outer bonding wire 411a, and at least one fifth protrusion 412a2 is provided on the first inner bonding wire 412a. Thus, through the first protrusion 411a2, the sealing portion 422 can be smoothly disconnected from the first bonding wire 411, and through the fifth protrusion 412a2, the sealing portion 422 can be smoothly disconnected from the second bonding wire 412. Preferably, along the left-right direction, a plurality of first protrusions 411a2 are arranged at intervals, and a plurality of fifth protrusions 412a2 are also arranged at intervals. In this way, the sealing portion 422 can be disconnected from the carrier 41 / the first outer bonding wire 411a / the second inner bonding wire 412a simultaneously at multiple positions in the left-right direction.

[0064] At least one second protrusion 411c2 is provided on the third outer bonding wire 411c, and at least one sixth protrusion 412c2 is provided on the third inner bonding wire 412c. Thus, through the second protrusion 411c2, the sealing portion 422 can be smoothly disconnected from the first bonding wire 411, and through the sixth protrusion 412c2, the sealing portion 422 can be smoothly disconnected from the second bonding wire 412. Preferably, along the left-right direction, a plurality of second protrusions 411c2 are arranged at intervals, and a plurality of sixth protrusions 412c2 are also arranged at intervals. In this way, the sealing portion 422 can be disconnected from the carrier 41 / the third outer bonding wire 411c / the third inner bonding wire 412c simultaneously at multiple positions in the left-right direction.

[0065] As described above, the third protrusion 411a3 and the fourth protrusion 411a4 are respectively provided at the left and right ends of the first outer bonding wire 411a. Correspondingly, at least one of the left and right ends of the first inner bonding wire 412a, the left and right ends of the third inner bonding wire 412c, and the left and right ends of the third outer bonding wire 411c can also be respectively provided with protrusions similar to the third protrusion 411a3 and the fourth protrusion 411a4.

[0066] As Figure 4As shown, along the rotation direction r, among the bonding wires located upstream of the opening 410, the protrusion (the sixth protrusion 412c2) provided in the bonding wire closest to the opening 410 (the third inner bonding wire 412c) is preferably generally triangular. Among the bonding wires located downstream of the opening 410, the protrusion (the first protrusion 411a2) provided in the bonding wire farthest from the opening 410 (the first outer bonding wire 411a) is preferably generally triangular, so as to facilitate the sealing portion 422 to start disconnecting from the bonding wire. More preferably, the orientation of one angle of the triangle is the same as the rotation direction r of the rotating member 16.

[0067] The following will continue to describe the stirring assembly in conjunction with Figure 2 and Figure 3 Continue to describe the stirring assembly.

[0068] Generally, the developer T located in the developer chamber 14a needs to be continuously stirred to prevent the developer T from caking. At the same time, the stirred developer T is conveyed toward the communication hole 151. For this purpose, in existing products, stirring blades are usually installed on the rotating member 16. Thus, as the rotating member 16 rotates, the developer T is slapped by the stirring blades and conveyed toward the communication hole 151.

[0069] In the present invention, since the seal 42 can rotate with the rotating member 16 and move relative to the developing housing 11, finally, the seal 42 separated from the carrier 42 will be wound around the rotating member 16. The seal 42 wound around the rotating member 16 can be used as a stirring blade to achieve the function of stirring the developer T. Therefore, the stirring assembly can be considered to include the rotating member 16 and the seal 42.

[0070] However, since the seal 42 needs to be detachably combined with the carrier 41, the material of the seal 42 needs to be softer than that of a conventional stirring blade. For example, the stirring blade is made of hard PET, and the seal 42 is made of soft PVE. To enable the seal 42 wound around the rotating member 16 to stir the developer T, the rotating member 16 further includes a reinforcing portion 163 connected to the shaft body 161. The reinforcing portion 163 is used to enhance the strength of the seal 42. In this way, there is no need to separately provide a stirring blade on the rotating member 16 that is harder than the seal 42, which is beneficial to reducing the cost of the stirring assembly.

[0071] In some embodiments, the reinforcing portion 163 is provided as a protrusion protruding from the shaft body 161. Along the left - right direction, a plurality of protrusions 163 are arranged at intervals.

[0072] In some embodiments, the reinforcing portion 163 can also be provided as a protrusion extending along the left - right direction.

[0073]

Conversion Assembly

[0074] Figure 5 It is an exploded view of some components at the driving end of the processing cartridge according to the present invention; Figure 6 It is a perspective view of the follower in the processing cartridge according to the present invention; Figure 7 It is a perspective view observed from the front upper side after the conversion assembly is installed on the processing cartridge; Figure 8A It is a state diagram when the driving member and the driven member in the conversion assembly cannot transmit the driving force; Figure 8B It is a state diagram when the driving member and the driven member in the conversion assembly can transmit the driving force.

[0075] In the actual production process of the processing cartridge 100, after the processing cartridge 100 is assembled, the factory needs to conduct an on-machine test on the processing cartridge 100. Specifically, a little developer is added to the developing chamber 14b or the developing roller 12, and then the processing cartridge 100 is installed on the imaging device for a printing test.

[0076] As described above, the rotating member 16 rotates by receiving the driving force from the driving force receiving assembly, and one end of the sealing member 42 is connected to the rotating member 16, which enables the sealing member 42 to move relative to the developing housing 11 following the rotation of the rotating member 16. During the on-machine test of the processing cartridge 100, the rotating member 16 will be driven, and then, the sealing member 42 will also be driven. Finally, the sealing portion 422 is disconnected from the carrier member 41, and the sealing member 42 changes from the sealed state to the unsealed state. However, at this time, the processing cartridge 100 has not reached the end user. Therefore, to prevent the sealing member 42 from changing from the sealed state to the unsealed state during the on-machine test of the processing cartridge 100, a conversion assembly 6 is further provided in the processing cartridge 100. The conversion assembly 6 has a connected state and a cut-off state. In the connected state, the rotating member 16 can rotate by receiving the driving force from the driving force receiving assembly through the conversion assembly 6. In the cut-off state, the rotating member 16 cannot receive the driving force received from the driving force receiving assembly and remains stationary. Among them, the conversion assembly 6 is arranged to be able to at least convert from the connected state to the cut-off state. Preferably, the conversion assembly 6 can be converted between the connected state and the cut-off state. In this way, even if the conversion assembly 6 is assembled in the connected state during the assembly process of the processing cartridge 100, the conversion assembly 6 can be converted to the connected state without disassembling the processing cartridge 100.

[0077] It should be understood that regardless of the state of the conversion assembly 6, the driving force of the driving force receiving assembly or the first driving force receiving member 31 can always be transmitted to the developing roller 12 through the driving force transmission assembly.

[0078] As Figure 5As shown, the processing cartridge 100 further includes a driving force transmission assembly 5 for transmitting the driving force of the driving force receiving assembly or the first driving force receiving member 31 (hereinafter described as "the first driving force receiving member 31"). The driving force transmission assembly 5 at least includes a first transmission member 51, a developing driving member 54, and a stirring driving member 55. Among them, the first transmission member 5 is used to receive the driving force of the first driving force receiving member 31. The developing driving member 54 is disposed at the end of the developing roller 12, and the stirring driving member 55 is disposed at the end of the rotating member 16.

[0079] In some embodiments, the developing driving member 54 receives the driving force from the first transmission member 51. Then, the developing driving member 54 drives the developing roller 12 to rotate. At the same time, the first transmission member 51 is also combined with the conversion assembly 6, and the stirring driving member 55 is also combined with the conversion assembly 6. Further, the conversion assembly 6 can control whether the driving force of the first transmission member 51 is transmitted to the stirring driving member 55.

[0080] In some embodiments, the processing cartridge 100 further includes a powder feeding driving member 56. The powder feeding driving member 56 can also receive the driving force from the first transmission member 51. Then, the powder feeding driving member 56 drives the powder feeding member 13 to rotate.

[0081] In some embodiments, more transmission members can be provided in the driving force transmission assembly 5, such that the developing driving member 54, the powder feeding driving member 56, and the stirring driving member 55 respectively correspond to one transmission member. As Figure 5 shown, the first transmission member 51, the second transmission member 52, and the third transmission member 53 are coaxially disposed. Preferably, the three transmission members are coaxially and integrally formed with the first driving force receiving member 31. The first transmission member 51 is used to be combined with the developing driving member 54, the second transmission member 52 is used to be combined with the powder feeding driving member 56, and the third transmission member 53 is used to be combined with the conversion assembly 6. The stirring driving member 55 is still combined with the conversion assembly 6.

[0082] It should be understood that the first transmission member 51, the second transmission member 52, and the third transmission member 53 may also be non-coaxially disposed, or in other words, the first transmission member 51, the second transmission member 52, and the third transmission member 53 are formed separately, as long as the first transmission member 51, the second transmission member 52, and the third transmission member 53 can receive the driving force of the first driving force receiving member 31 and respectively transmit the driving force to the corresponding components.

[0083] In some embodiments, the processing cartridge 100 further includes a cover 17 and a bracket 18 fixedly disposed relative to the developing housing 11. In the left-right direction, the cover 17, the bracket 18, and the developing housing 11 are arranged in sequence. Among them, the bracket 18 is fixedly connected to the developing housing 11, and either the bracket 18 or the developing housing 11 is fixedly connected to the cover 17. The first driving force receiving member 31 is exposed through the cover 17 and supported by the bracket 18. The developing driving member 54, the stirring driving member 55, and the powder feeding driving member 56 are disposed between the bracket 18 and the developing housing 11; alternatively, at least one of the cover 17 and the bracket 18 can be omitted.

[0084] The conversion assembly 6 includes a driving member 61, a driven member 62, an intermediate member 63, and a pushing member 64. The driving member 61 is configured to receive the driving force of the first driving force receiving member 31. Specifically, the driving member 61 can be combined with any one of the first driving force receiving member 31, the first transmission member 51, the second transmission member 52, and the third transmission member 53, as long as it can receive the driving force from the first driving force receiving member 31. The driven member 62 is configured to transmit the driving force to the rotating member 16. Specifically, the driven member 62 is combined with the stirring driving member 55. The intermediate member 63 is configured to be movable between a first position and a second position. When the intermediate member 63 is in the first position, the conversion assembly 6 is in a cut-off state, and the sealing assembly 4 is in a sealed state. When the intermediate member 63 is in the second position, the conversion assembly 6 is in a connected state, and the sealing assembly 4 changes from the sealed state to the unsealed state. The pushing member 64 is configured to apply a pushing force to the intermediate member 63 so that the intermediate member 63 remains at least in the second position.

[0085] Specifically, the driving member 61 includes a gear body 614, a through hole 612, and a first transmission portion 613. Along the rotation axis of the gear body 614, the through hole 612 is disposed through the gear body 614 to allow a part of the driven member 62 to pass through. The first transmission portion 613 is configured to be combined with the intermediate member 63 to transmit the driving force to the intermediate member 63. For example, the first transmission portion 613 is a groove or a protrusion provided on the gear body 614. Figure 5 An example in which the first transmission portion 613 is provided as a groove is given. Preferably, the groove 613 communicates with the through hole 612 to facilitate the transmission of the driving force between the first transmission portion 613 and the intermediate member 63.

[0086] The intermediate member 63 includes an intermediate main body 631 and an intermediate transmission portion 632 connected to the intermediate main body 631. The intermediate transmission portion 632 is configured to be combined with the first transmission portion 613 to achieve the transmission of the driving force between the gear body 614 and the intermediate member 63. Preferably, the intermediate main body 631 and the intermediate transmission portion 632 are integrally formed. Figure 5An example is also given where the intermediate transfer portion 632 is provided to protrude from the intermediate main body 631. When the first transfer portion 613 is provided as a protrusion, the intermediate transfer portion 632 can be provided either as a groove that mates with the protrusion or as another protrusion that mates with the protrusion.

[0087] As Figure 6 shown, the follower 62 includes a follower main body 621, a second transfer portion 622, and a follower transfer portion 626. The follower transfer portion 626 is connected to the follower main body 621 and is used to transfer the driving force to the rotating member 16. For example, the follower transfer portion 626 is directly or indirectly combined with the stirring driving member 55 to transfer the driving force to the stirring driving member 55, and then the stirring driving member 55 drives the rotating member 16 to rotate. The second transfer portion 622 is used to be combined with the intermediate member 63 / intermediate transfer portion 632 to receive the driving force from the first transfer portion 613, thereby driving the follower 62 to rotate. Figure 6 An example is given where the second transfer portion 622 is provided as a groove and the follower transfer portion 626 is provided as a gear. Correspondingly, the stirring driving member 55 is also provided as a gear.

[0088] In an achievable manner, the second transfer portion 622 can also be provided as a protrusion. It can be seen that the shapes of the first transfer portion 613, the intermediate transfer portion 632, and the second transfer portion 622 do not have to be limited as long as the driving force can be transferred through the first transfer portion 613, the intermediate transfer portion 632, and the second transfer portion 622.

[0089] Furthermore, the follower 62 further includes a first limiting portion 624, a second limiting portion 625, and a holding portion 623 provided along the circumferential direction of the follower main body 621. The holding portion 623 is located between the first limiting portion 624 and the second limiting portion 625. The first limiting portion 624 and the second limiting portion 625 are used to hold the intermediate member 63 / intermediate transfer portion 632 in the holding portion 623. Along the circumferential direction of the follower main body 621, the second limiting portion 624 is adjacent to the second transfer portion 622. In this way, when the intermediate transfer portion 632 is no longer restricted by the second limiting portion 624, the intermediate transfer portion 632 can be combined with the second transfer portion 622.

[0090] Specifically, as Figure 6 shown, two protruding bodies 620 are formed to protrude radially from the follower main body 621. Along the circumferential direction of the follower main body 621, the two protruding bodies 620 are spaced apart. The second transfer portion 622 is located between the two protruding bodies 620. Each protruding body 620 is provided with the first limiting portion 624, the second limiting portion 625, and the holding portion 623.

[0091] In some embodiments, the protrusion 620 may not be provided, and the first limiting portion 624, the second limiting portion 625, the holding portion 623, and the second limiting portion 622 may be directly provided on the driven main body 621.

[0092] In some embodiments, the follower 62 further includes a third limiting portion (axial limiting portion) 627 connected to the driven main body 621. When the processing cartridge 100 / developer cartridge 10 is assembled, at least a part of the driven main body 621 passes through the through hole 612. Due to the limitation of the third limiting portion 627, at least a part of the driven transmission portion 626 is located on one side of the gear body 614, and at least a part of the intermediate member 63 is located on the other side of the gear body 614. Thus, the control of the intermediate member 63, the continuous rotation of the gear body 614, and the transmission of the driving force from the intermediate driven transmission portion 626 to the rotating member 16 can be mutually non-interfering. Preferably, the driving member 61, the follower 62, and the intermediate member 63 are coaxially arranged. Therefore, the overall structure of the conversion assembly 6 can be simplified, which is beneficial to improving the space utilization rate of the processing cartridge 100, and further realizing the miniaturization of the processing cartridge 100.

[0093] As Figure 8A shown, before the end user uses the processing cartridge 100, the intermediate member 63 is in the first position. Since the pushing member 64 abuts against the intermediate member 63, under the pushing action of the pushing member 64, the intermediate transmission portion 632 is held in the holding portion 623. Along the radial direction of the intermediate member 63, the size of the intermediate transmission portion 632 is larger than the maximum size of the protrusion 620. Even if the intermediate member 63 generates slight shaking, the intermediate transmission portion 632 can still be restricted in the holding portion 623 by the first limiting portion 624 and the second limiting portion 625. At this time, neither the first transmission portion 613 nor the second transmission portion 622 is combined with the intermediate transmission portion 632. The gear body 614 receives the driving force from the first driving force receiving member 31 and rotates freely, but the driven transmission portion 626 is not driven and remains stationary. Correspondingly, the stirring driving member 55 and the rotating member 16 both remain stationary. Therefore, the factory can add a little developer T into the developing chamber 14b to perform the on-machine test of the processing cartridge 100, and the seal 42 will not change from the sealed state to the unsealed state.

[0094] In some embodiments, when the intermediate member 63 is in the first position, the pushing member 64 may not apply a pushing force to the intermediate member 63, and the intermediate member 63 is held in the first position by using other components or its own gravity.

[0095] As Figure 8BAs shown, before the end user starts using the processing cartridge 100, or after the on-machine test of the processing cartridge 100 is completed, only a toggling tool needs to be used to toggle the middle member 63 to overcome the urging force of the urging member 64, so that the middle bottom 632 crosses the first limiting portion 624. Under the action of the gravity of the middle member 63 itself and the urging force applied by the urging member 64, the middle transfer portion 632 is combined with the first transfer portion 613 (for example, the middle transfer portion 632 enters the first transfer portion 613); as described above, since the gear body 614 can receive the driving force from the first driving force receiving member 31 and remain rotating, the stop position of the gear body 614 will be random. Correspondingly, the position where the second transfer portion 622 is located is also random. In Figure 8B , the second transfer portion 622 and the first transfer portion 613 are opposite in the radial direction of the gear body 614. The middle transfer portion 632 can be combined with the first transfer portion 613 and the second transfer portion 622 at the same time. Finally, as the gear body 614 rotates, the driving force is sequentially transmitted to the driven member 62 through the first transfer portion 613, the middle transfer portion 632, and the second transfer portion 622. Subsequently, the driving force continues to be transmitted to the stirring driving member 55 through the driven transfer portion 626, and the rotating member 16 is driven.

[0096] In some embodiments, when the middle transfer portion 632 crosses the first limiting portion 624, even if the second transfer portion 622 and the first transfer portion 613 are not opposite in the radial direction of the gear body 614, at this time, the middle transfer portion 632 will not be able to be combined with the first transfer portion 613 and the second transfer portion 622 at the same time. However, as the gear body 614 continues to rotate, the first transfer portion 613 will always reach a position opposite to the second transfer portion 622 in the radial direction of the gear body 614 at a certain moment. Since the middle member 63 is urged by the urging member 64, under the action of the gravity of the middle member 63 itself and the urging force of the urging member 64, the middle transfer portion 632 is combined with the first transfer portion 613 and the second transfer portion 622 at the same time. At this time, the middle member 63 reaches the second position, and the driving force of the first driving force receiving member 31 will be able to be transmitted to the rotating member 16 through the conversion assembly 6.

[0097] In some embodiments, there is also an operation hole 170 between the protective cover 17 and the bracket 18. As Figure 7 shown, at least a part of the middle member 63 is exposed through the swing operation hole 170. Therefore, the end user can operate the middle member 63 through the operation hole 170 to make the middle member 63 deviate from the first position or return from the second position to the first position; preferably, the first limiting portion 624 is set as an inclined surface inclined relative to the left-right direction to facilitate the middle member 63 to cross the first limiting portion 624.

[0098]

Other descriptions

[0099] Based on the inventive concept of the present invention, the present invention also has the following variations:

[0100] 1. The rotation axis of the rotating member 16 is preferably parallel to the left - right direction. However, in an achievable manner, the rotation axis of the rotating member 16 can also intersect the left - right direction, as long as the rotation of the rotating member 16 can cause the seal member 42 to change from the sealed state to the unsealed state. For example, the rotation axis of the rotating member 16 is inclined or perpendicular to the left - right direction. When the rotation axis of the rotating member 16 is perpendicular to the left - right direction, a direction - converting member can be provided to force the seal member 42 to change from the sealed state to the unsealed state.

[0101] 2. The carrier member 41 may not be provided, or rather, the carrier member 41 and the partition plate 15 are integrally formed. At this time, the partition plate 15 can also be regarded as the carrier member, and the bonding wires will be formed on the partition plate 15.

[0102] 3. Whether or not the carrier member 41 is provided, or rather, whether or not the carrier member 41 and the partition plate 15 are integrally formed, the bonding wires can also be provided on the seal member 42.

[0103] 4. Since the seal member 42 can be installed not only by welding as described above, but also by bonding, magnetic connection, etc., the sealing assembly 4 can be described as at least including the seal member 42, which is used to seal the communication hole 151 and is arranged to be able to change from the sealed state to the unsealed state.

[0104] 5. According to the design requirements, the number of the bonding wires can be more. For example, a third bonding wire, a fourth bonding wire... are provided. No matter how many bonding wires are provided, a protective space for accommodating the developer is always formed between adjacent two bonding wires. Generally speaking, along the rotation direction r, the protrusions provided in the bonding wires upstream of the opening 410 always protrude from the corresponding bonding wire body towards the direction close to the opening 410, and the protrusions provided in the bonding wires downstream of the opening 410 always protrude from the corresponding bonding wire body towards the direction away from the opening 410.

[0105] 6. The above describes the implementation manner of arranging the conversion assembly 6 in the driving - force transmission assembly 5. However, according to the inventive concept of the present invention, the conversion assembly 6 can also be arranged between the first driving - force receiving member 31 and the driving - force transmission assembly 5, or between the stirring driving member 55 and the rotating member 16, as long as the conversion assembly 6 can have the connection state and the cut - off state.

[0106] 7. The above-described sealing assembly 4 and stirring assembly are both disposed in the developing cartridge 10. Therefore, the technical solution of the present invention can be used not only in the processing cartridge 100 that simultaneously includes the developing cartridge 10 and the drum cartridge 20, but also in the developing cartridge 10 disposed independently of the drum cartridge 20. The developing cartridge 10 can also be detachably mounted to the imaging device.

[0107] 8. When it is not necessary to perform an on-machine test on the processing cartridge 100 / developing cartridge 10, the conversion assembly 6 may not be provided.

[0108] 9. In some embodiments, to facilitate the installation of the carrier 41, an auxiliary member may be pre-mounted on the upper surface of the partition 15. At this time, the carrier 41 will be indirectly fixed on the upper surface of the partition 15.

[0109]

Beneficial Effects

[0110] According to the above description, the present invention can achieve the following beneficial effects:

[0111] 1. In comparison, the space of the developer chamber 14a is much larger than that of the developing chamber 14b. The seal 42 is disposed on the side of the partition 15 facing the developer chamber 14a, which not only makes it easier to install the seal 42, but also prevents the seal 42 from interfering with the developing roller 12 and / or the powder feeding roller 13 in the developing chamber 14b.

[0112] 2. One end of the seal 42 is connected to the partition 15 / carrier 41, and the other end is connected to the rotating member 16. In this way, the seal 42 can move relative to the developing housing 11 as the rotating member 16 rotates. Finally, the seal 42 can be changed from the sealed state to the unsealed state without manually unsealing the seal 42, thereby reducing the operation steps of the end user and being beneficial to improving the use experience of the end user. Especially for the end user who uses the imaging device for the first time, this structure will prevent the imaging device from being unable to image because the processing cartridge 100 has not removed the seal 42.

[0113] 3. As Figure 2As shown by the dashed line in the figure, during the movement of the seal 42 relative to the developing cartridge 11 as the rotating member 16 rotates, the seal 42 is pulled upward by the rotating member 16. Even if the developing agent T added during the on-machine test of the processing cartridge 100 is not completely consumed, as the seal 42 moves, this developing agent T will be pushed and gathered by the lifted seal 42 / sealing portion 422 towards the direction close to the developing cartridge 11. However, since the seal 42 is wound around the rotating member 16, in the area where the developing agent T gathers, the seal 42 / sealing portion 422 will not be bent into a U shape, so that the gathered developing agent T is clamped in the U-shaped seal 42 / sealing portion 422, ultimately resulting in the situation where the seal 42 / sealing portion 422 cannot move forward.

[0114] Even if there is a large amount of the gathered developing agent T, since the left-right dimension of the processing cartridge 100 is much larger than the front-back dimension, in the case of the same volume of the developing agent T, the developing agent T above the sealing portion 422 involved in the present invention will be more dispersed and more likely to hinder the movement of the seal 42 / sealing portion 422.

[0115] 4. Since the seal 42 can be changed from the sealed state to the unsealed state as the rotating member 16 rotates, and finally, the seal 42 is wound around the rotating member 16, therefore, the developing cartridge 11 does not need to be additionally provided with a hole allowing the seal 42 to pass through. This can not only simplify the structure of the developing cartridge 11, but also eliminate the need to consider the problem of leakage of the developing agent T caused by the setting of the hole.

[0116] 5. In the prior art, the hardness of the material of the seal 42 is much lower than that of the stirring blade. In the present invention, by providing a reinforcing portion 163 in the rotating member 16, the seal 42 wound around the rotating member 16 is enhanced in strength by abutting against the reinforcing portion 163. Therefore, the seal 42 in the unsealed state can be used as a stirring blade, and there is no need to additionally provide a stirring blade on the rotating member 16, which is beneficial to reducing the material cost and assembly cost of the developing cartridge 10 / processing cartridge 100.

[0117] 6. Before the end user starts to use the processing cartridge 100, in order to prevent the seal 42 from being changed to the unsealed state, a conversion component 6 is further provided in the processing cartridge 100 / developing cartridge 10. The conversion component 6 has a connected state and a cut-off state. Before the end user starts to apply force to the processing cartridge 100, the conversion component 6 is in the cut-off state. Even if the on-machine test of the processing cartridge 100 is carried out, the seal 42 can still remain in the sealed state.

Claims

1. A developing cartridge detachably mounted to an image forming apparatus, characterized in that, The developing cartridge includes: A developing housing which is divided by a partition disposed therein into a developer chamber for accommodating a developer and a developing chamber. The partition has a communication hole and an upper surface facing the developer chamber and a lower surface facing the developing chamber. The communication hole penetrates through the upper surface and the lower surface, and the developer in the developer chamber enters the developing chamber through the communication hole; A developing roller rotatably disposed in the developing chamber for carrying the developer; A rotating member rotatably disposed in the developer chamber; A sealing assembly located above the upper surface and connected to the rotating member. As the rotating member rotates, the sealing assembly changes from a sealed state to an unsealed state. In the sealed state, the sealing assembly seals the communication hole, and in the unsealed state, the sealing assembly does not seal the communication hole.

2. The developing cartridge according to claim 1, wherein The sealing assembly includes a seal and a carrier. The carrier is used for carrying the seal, and the seal is removably disposed on the carrier. The seal includes a connecting portion and a sealing portion connected to each other. The sealing portion is used for sealing the communication hole, and the connecting portion is used for connecting to the rotating member; The carrier includes a plurality of side plates and an opening located between the plurality of side plates. The sealing portion is mounted on the plurality of side plates, and the opening is opposite to the communication hole; At least the seal is located above the upper surface of the partition; 3. The developing cartridge according to claim 2, wherein The seal is mounted by welding, and welding wires for welding the seal are disposed on the carrier or the seal; the welding wires include a plurality of welding wires evenly wound around the opening, and a protective space for accommodating the developer is formed between adjacent two welding wires; 4. The developing cartridge according to claim 3, wherein Along the rotation direction of the rotating member, the welding wires located upstream of the opening and the welding wires located downstream of the opening both include a wire body and a protruding portion protruding from the wire body; Among the welding wires located upstream of the opening, the protruding portion protrudes from the wire body towards the opening; Among the welding wires located downstream of the opening, the protruding portion protrudes from the wire body away from the opening; 5. The developing cartridge according to claim 4, wherein, Among the welding wires located upstream of the opening, the protruding portion provided in the welding wire closest to the opening has at least one corner. Among the welding wires located downstream of the opening, the protruding portion provided in the welding wire farthest from the opening has at least one corner, and the tip of the corner faces in the same direction as the rotation direction; 6. The developing cartridge according to claim 4, wherein Among the welding wires located downstream of the opening, at least one of the left and right ends of the welding wire farthest from the opening is provided with a protruding portion; 7. The developing cartridge according to claim 4, wherein Along the rotation direction of the rotating member, at least any two of the protruding portions are oppositely disposed; 8. The developing cartridge according to any one of claims 2-7, characterized in that, The rotating member includes a shaft body and a reinforcing portion connected to the shaft body. The reinforcing portion is used for enhancing the strength of the seal; 9. The developing cartridge according to claim 8, wherein, The reinforcing portion is provided as at least one protrusion protruding from the shaft body; 10. Process cartridge, characterized in that, The processing cartridge includes a drum cartridge and the developing cartridge according to any one of claims 1-9. The developing cartridge is movably connected to the drum cartridge.

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