Developing box and processing box

Abstract

The utility model relates to a developing box and a processing box which are detachably arranged in an electrophotographic imaging device, the developing box comprises a developing shell, a developing cavity and a processing box, the developing shell is divided into the developing cavity and the developing cavity by a partition plate arranged in the developing shell, the developing cavity is used for accommodating a developing agent, and the partition plate is provided with a communicating hole for communicating the developing cavity with the developing cavity; a first driving force receiver; the developing roller is rotatably arranged in the developing cavity; the rotating part is rotatably arranged in the developing agent cavity; the sealing assembly has a sealing state for sealing the communicating hole; the conversion assembly has a connection state and a cut-off state, in the cut-off state, the rotating part does not receive the driving force from the first driving force receiving part and keeps static, and the sealing assembly is in a sealing state; in the connecting state, the rotating part can receive the driving force from the first driving force receiving part through the conversion assembly to rotate, and the sealing assembly is converted from the sealing state to the sealing releasing state, so that the sealing assembly is still in the sealing state when the developing box is used for testing on a machine.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electrophotographic imaging, and particularly relates to a developing box and a process cartridge which can be detachably installed in an electrophotographic imaging device. BACKGROUND

[0002] The developing box is a container which can be detachably installed in an imaging device, and includes a developing housing and a developing roller rotatably arranged in the developing housing. The developing housing contains a developer for developing, and the developing roller is used to carry the developer and supply the developer to a photosensitive drum arranged opposite to the developing roller, so that an electrostatic latent image formed on the photosensitive drum is developed.

[0003] Further, after being assembled, it is necessary to perform on-machine testing, and the developing box can be packaged and shipped out of the factory only after the testing is passed. The existing on-machine testing method is to add the developer to the developing roller, and then install the developing box in the imaging device to perform imaging. After the testing is completed, there is always a small amount of developer remaining on the developing roller. In order to remove the small amount of developer, the existing method is to disassemble the developing box again for cleaning, and then assemble it again. However, in the process of disassembling and assembling again, it is very likely to cause damage or contamination to other components in the developing box. SUMMARY

[0004] Therefore, the utility model provides a developing box adopting the following technical scheme and a process cartridge with the developing box to solve the above technical problems, specifically as follows:

[0005] The developing box can be detachably installed in an imaging device, and includes a developing housing, a partition plate arranged in the developing housing to divide the developing housing into a developer cavity and a developing cavity, the developer cavity being used to contain a developer, the partition plate having a communication hole communicating the developer cavity and the developing cavity, a first driving force receiving member used to receive a driving force from the imaging device, a developing roller receiving the driving force from the first driving force receiving member and rotatably arranged in the developing cavity to carry the developer, a rotating member rotatably arranged in the developer cavity, a sealing assembly connected with the rotating member, the sealing assembly being switched from a sealing state to an unsealing state with the rotation of the rotating member, in the sealing state, the sealing assembly seals the communication hole, and in the unsealing state, the sealing assembly does not seal the communication hole, and a switching assembly having a connected state and a cut-off state, in the cut-off state, the rotating member cannot receive the driving force from the first driving force receiving member and remains stationary, and the sealing assembly is in the sealing state, and in the connected state, the rotating member can rotate by receiving the driving force from the first driving force receiving member through the switching assembly, and the sealing assembly is switched from the sealing state to the unsealing state.

[0006] In some embodiments, the conversion assembly comprises: a driving member for receiving the driving force from the first driving force receiving member; a driven member for transmitting the driving force to the rotating member; an intermediate member configured to be movable between a first position and a second position, when the intermediate member is in the first position, the conversion assembly is in the cut-off state, and when the intermediate member is in the second position, the conversion assembly is in the connected state; a pushing member for applying a pushing force to the intermediate member so that the intermediate member is kept at least in the second position.

[0007] In some embodiments, the driving member, the driven member and the intermediate member are coaxially arranged.

[0008] In some embodiments, the driving member comprises a gear body, a through hole passing through the gear body along the rotation axis of the gear body to allow a part of the driven member to pass through, and a first transmission part for combining with the intermediate member to transmit the driving force to the intermediate member, and the gear body is configured to receive the driving force from the first driving force receiving member.

[0009] In some embodiments, the driven member comprises a driven body, a second transmission part and a driven transmission part connected with the driven body for transmitting the driving force to the rotating member, and a second transmission part for combining with the intermediate member to receive the driving force from the first driving force receiving member to drive the rotating member to rotate.

[0010] In some embodiments, the driven member further comprises a first limiting part, a second limiting part and a retaining part arranged along the circumferential direction of the driven body, the retaining part is located between the first limiting part and the second limiting part, and the first limiting part and the second limiting part are used to retain the intermediate member; the second limiting part is arranged adjacent to the second transmission part along the circumferential direction of the driven body.

[0011] In some embodiments, two protruding bodies are formed radially from the driven body, and the two protruding bodies are arranged at intervals along the circumferential direction of the driven body, the second transmission part is located between the two protruding bodies, and each protruding body is provided with a first limiting part, a second limiting part and a retaining part.

[0012] In some embodiments, the driven member further comprises a third limiting part connected with the driven body, when the developing cartridge is completed, at least a part of the driven body passes through the through hole, at least a part of the driven transmission part is located on one side of the gear body through the limitation of the third limiting part, and at least a part of the intermediate member is located on the other side of the gear body.

[0013] In some embodiments, the first transmission part and the second transmission part are both arranged as grooves, the intermediate member comprises an intermediate body and an intermediate transmission part connected with the intermediate body, the intermediate transmission part is used to combine with the first transmission part and the second transmission part to transmit the driving force; along the radial direction of the intermediate member, the size of the intermediate transmission part is greater than the maximum size of the protruding body.

[0014] This utility model also provides a processing box, which includes a drum box and a developing box as described above, wherein the developing box and the drum box are movably connected. Attached Figure Description

[0015] Figure 1 This is a perspective view of the processing box involved in this utility model.

[0016] Figure 2 It is along Figure 1 A cross-sectional view after being cut along the AA direction.

[0017] Figure 3 This is an exploded view of the sealing component and the developing housing involved in this utility model after separation.

[0018] Figure 4 This is a plan view of the carrier component in the sealing assembly involved in this utility model.

[0019] Figure 5 This is an exploded view of some components of the processing box drive end involved in this utility model.

[0020] Figure 6 This is a perspective view of the driven component in the processing box involved in this utility model.

[0021] Figure 7 This is a three-dimensional view taken from the front and top after the conversion components have been installed into the processing box.

[0022] Figure 8A It is a state diagram of the driving and driven components in the conversion component when they are unable to transmit driving force.

[0023] Figure 8B It is a state diagram of the active and driven components in the conversion component when they are in a state where they can transmit driving force. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0025] [Basic Structure of the Processing Box]

[0026] Figure 1 This is a perspective view of the processing box involved in this utility model; Figure 2 It is along Figure 1 A cross-sectional view after being cut along the AA direction.

[0027] like Figure 1As shown, the processing cartridge 100 includes a developing cartridge 10 and a drum cartridge 20 movably connected to each other, the developing cartridge 10 including a developing housing 11 and a developing roller 12 rotatably disposed in the developing housing 11, the drum cartridge 20 including a drum housing 21 and a photosensitive drum 22 rotatably disposed in the drum housing 21, the developing roller 12 being oppositely arranged with the photosensitive drum 22, the developing roller 12 having an axis of rotation L1 and being configured to carry a developer T (such as toner) contained in the developing housing 11, as shown. Figure 2 As shown, the processing cartridge 100 includes a developing cartridge 10 and a drum cartridge 20 movably connected to each other, the developing cartridge 10 including a developing housing 11 and a developing roller 12 rotatably disposed in the developing housing 11, the drum cartridge 20 including a drum housing 21 and a photosensitive drum 22 rotatably disposed in the drum housing 21, the developing roller 12 being oppositely arranged with the photosensitive drum 22, the developing roller 12 having an axis of rotation L1 and being configured to carry a developer T (such as toner) contained in the developing housing 11, as shown.

[0028] Further, the processing cartridge 100 further includes a driving force receiving assembly for receiving a driving force from the image forming device, the driving force receiving assembly being configured to directly or indirectly drive the developing roller 12 and the photosensitive drum 22 to rotate.

[0029] In some embodiments, the driving force receiving assembly includes a first driving force receiving member 31 and a second driving force receiving member 32, wherein the first driving force receiving member 31 is configured to receive a driving force from the image forming device to directly or indirectly drive the developing roller 12 to rotate, and the second driving force receiving member 32 is configured to receive a driving force from the image forming 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 can be provided, and the driving force is received from the image forming 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] Further, the processing cartridge 100 further includes a first end cover 300 and a second end cover 400 respectively located at two ends of the processing cartridge 100, the developing cartridge 10 and the drum cartridge 20 being connected through the first end cover 300 and the second end cover 400, and the driving force receiving assembly being exposed outwardly through the first end cover 300.

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

[0033] As 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 being configured to force the developing roller 12 and the photosensitive drum 22 to maintain contact. Figure 2

[0034] ​In some embodiments, the processing cartridge 100 further comprises a powder feeding roller 13 rotatably arranged in the developing housing 11, the powder feeding roller 13 being in contact with the developing roller 12, and the powder feeding roller 13 supplies the developing agent T to the developing roller 12 during the imaging process of the processing cartridge 100.

[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-rear direction, and the direction intersecting with the left-right direction and the front-rear direction is the up-down direction, preferably, the left-right direction, the front-rear 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 along the front-rear 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 arranged is the lower side, and the side where the photosensitive drum 22 and the developing roller 12 are not arranged is the upper side, when the processing cartridge 100 is installed to the image forming apparatus, the side where the photosensitive drum 22 and the developing roller 12 are arranged is in the lower side.

[0036]

Stirring assembly and sealing assembly

[0037] As shown in Figure 2 the developing housing 11 encloses a containing cavity 14, the developing cartridge 10 further comprises a partition plate 15 arranged in the developing housing 11, the partition plate 15 has a communication hole (developing agent supply port) 151, and the partition plate 15 divides the containing cavity 14 into a developing agent cavity 14a and a developing cavity 14b, the communication hole 151 communicates the developing agent cavity 14a and the developing cavity 14b, the developing agent cavity 14a is used for storing the developing agent T, and the developing roller 12 is rotatably arranged in the developing cavity 14b, the partition plate 15 has opposite upper and lower surfaces 15a and 15b, the upper surface 15a faces the developing agent cavity 14a, and the lower surface 15b faces the developing cavity 14b, the communication hole 151 penetrates the upper and lower surfaces 15a and 15b, and the developing agent T in the developing agent cavity 14a can enter the developing cavity 14b through the communication hole 151.

[0038] In some embodiments, the developing cartridge 10 further comprises a powder feeding roller 13 rotatably arranged in the developing cavity 14b, the powder feeding roller 13 being in contact with the developing roller 12, and the powder feeding roller 13 supplies the developing agent T entering the developing cavity 14b to the developing roller 12; it should be understood that the powder feeding roller 13 can also not be necessarily arranged, at this time, the developing agent T entering the developing cavity 14b can be directly carried by the developing roller 12.

[0039] Further, the developing cartridge 10 further comprises a rotating member 16 rotatably arranged in the developer cavity 14a, and a sealing assembly 4 arranged above the upper surface 15a, specifically, the sealing assembly 4 is arranged on the upper surface 15 and connected with the rotating member 16, and the sealing assembly 4 is used to seal the communication hole 151, so as 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, and further cause the developer to leak or be damp, that is, the communication hole 151 should be in a sealed state by the sealing assembly 4 before the end user starts to use the processing cartridge 100; the sealing assembly 4 is arranged to be changed from a sealed state to an unsealed state with the rotation of the rotating member 16.

[0040] The rotating member 16 is in a long strip shape and can rotate around its rotation axis, and the rotating member 16 comprises a shaft body 161 and a connecting part 162 arranged on the shaft body 161, and the connecting part 162 is used to connect with the sealing assembly 4, so that a part of the sealing assembly 4 can move relative to the developing housing 11 with the rotation of the rotating member 16.

[0041] Figure 3 is an exploded view of the sealing assembly and the developing housing according to the present application; Figure 4 is a plan view of a bearing member in the sealing assembly according to the present application.

[0042] As shown in Figure 3 and Figure 4 , the sealing assembly 4 comprises a bearing member 41 and a sealing member 42, the bearing member 41 is fixedly arranged on the partition plate 15 and used to bear the sealing member 42, and the sealing member 42 is used to seal the communication hole 151 and arranged between the bearing member 41 and the rotating member 16, or in other words, one end of the sealing member 42 is connected with the bearing member 41 and the other end is connected with the rotating member 16, so that the sealing member 42 can move relative to the developing housing 11 with the rotation of the rotating member 16, and finally, the sealing member 42 is changed from a sealed state of the communication hole 151 to an unsealed state of no longer sealing the communication hole 151.

[0043] The sealing member 42 is arranged on the bearing member 41 in a removable manner, for example, the sealing member 42 is pasted on the bearing member 41, or the sealing member 42 is welded on the bearing member 41, or the sealing member 42 is carried by the bearing member 41 through magnetic attraction, and the following is described by taking the sealing member 42 welded on the bearing member 41 as an example.

[0044] The sealing member 42 comprises a connecting portion 421 and a sealing portion 422 connected with each other, the sealing portion 422 is used for sealing the communication hole 151, the connecting portion 421 is provided with a combined portion 423, the sealing member 42 is connected with the rotating member 16 by combining the combined portion 162 and the combined portion 423 with each other, for example, one of the combined portion 162 and the combined portion 423 is provided as a protrusion, and the other is provided as a groove or a through hole, the combined portion 162 and the combined portion 423 are combined by welding; in other realizable modes, the combined mode of the combined portion 162 and the combined portion 423 can also be adhesion, clamping and the like.

[0045] As shown in Figure 2 When the rotating member 16 rotates along the rotating direction r, the connecting portion 421 is pulled by the rotating member 16 and gradually winds on the rotating member 16, in the state that the connecting portion 421 is pulled tight, with the rotating member 16 continuing to rotate, the connecting portion 421 will pull the sealing portion 422, so that the sealing portion 422 changes from the sealing state to the unsealing state.

[0046] Generally, before the user starts to use the process cartridge 100, in order to prevent the sealing failure of the sealing portion 422, the sealing portion 422 is welded with the bearing member 41 as tight as possible, however, when the rotating member 16 rotates, the sealing portion 422 should be easily pulled, otherwise, the sealing member 42 can be pulled off, the driving component for driving the rotating member 16 to rotate, even the driving force receiving assembly and the driving force output member in the image forming device for outputting the driving force to the driving force receiving assembly can be damaged, for this reason, the utility model adopts the following technical scheme, so that the sealing portion 422 has good sealing effect and can be easily pulled by the rotating member 16.

[0047] As shown in Figure 4 The bearing member 41 comprises a plurality of side plates and an opening 410 between the plurality of side plates, the sealing portion 422 is installed on the plurality of side plates, when the bearing member 41 is installed, the plurality of side plates are opposite to the partition plate 15 and connected with each other, the opening 410 is opposite to the communication hole 151, similarly, the connecting mode between the plurality of side plates and the partition plate 51 is various, for example, adhesion, welding, magnetic connection and the like, as long as the bearing member 41 can be fixed to the partition plate 15, through the opening 410 and the communication hole 151, the developer T can flow between the developer cavity 14a and the developing cavity 14b.

[0048] In some embodiments, the carrier 41 comprises four side plates opposite to each other, specifically, a first side plate 41a and a third side plate 41c opposite to each other, and a second side plate 41b and a fourth side plate 41d opposite to each other, wherein the length of the first side plate 41a and the length of the third side plate 41c are both greater than the length of the second side plate 41b and the length of the fourth side plate 41d, preferably, the length of the first side plate 41a and the length of the third side plate 41c are equal, and the length of the second side plate 41b and the length of the fourth side plate 41d are equal, and both ends of the first side plate 41a and both ends of the third side plate 41c are connected with the second side plate 41b and the fourth side plate 41d, respectively, that is, the first side plate 41a, the second side plate 41b, the third side plate 41c and the fourth side plate 41d are connected in sequence and enclose the opening 410.

[0049] Further, each side plate of the carrier 41 is provided with a welding line, specifically, a first welding line 411 and a second welding line 412, wherein the first welding line 411 and the second welding line 412 are both arranged around the opening 410, and the first welding line 411 and the second welding line 412 are arranged at a distance from each other, and the first welding line 411 is farther away from the opening 410 than the second welding line 412, and a protection space 416 is formed between the first welding line 411 and the second welding line 412, so that even if one of the first welding line 411 and the second welding line 412 is disconnected from the sealing part 422 (soldering disconnection or virtual welding), the other one of the first welding line 411 and the second welding line 412 can still be well connected with the sealing part 422.

[0050] Since the second welding line 412 is closer to the opening 410 than the first welding line 411, the welding area formed by the second welding line 412 can be smaller than that of the first welding line 411, so that the soldering disconnection or virtual welding between the second welding line 412 and the sealing part 422 is more likely to occur; when a part of the second welding line 412 is disconnected from the sealing part 422, the second welding line 412 will form a gap allowing the developer T to pass through, so that the developer T enters the protection space 416 and exerts a pressing force on the first welding line 411, however, in the case of the second welding line 412, the total amount of developer entering the protection space 416 is limited, and the pressing force of the developer T on the first welding line 411 is smaller, thereby reducing the risk of disconnection between the first welding line 411 and the sealing part 422.

[0051] The first wire 411 includes a first outer wire 411a arranged at the first side plate 41a, a second outer wire 411b arranged at the second side plate 41b, a third outer wire 411c arranged at the third side plate 41c, and a fourth outer wire 411d arranged at the fourth side plate 41d, the first outer wire 411a and the third outer wire 411c are oppositely arranged, the second outer wire 411b and the fourth outer wire 411d are oppositely arranged, both ends of the first outer wire 411a and both ends of the third outer wire 411c are connected with the second outer wire 411b and the fourth outer wire 411d, that is, the first outer wire 411a, the second outer wire 411b, the third outer wire 411c and the fourth outer wire 411d are sequentially connected, and the opening 410 is located between the first outer wire 411a, the second outer wire 411b, the third outer wire 411c and the fourth outer wire 411d.

[0052] In the rotation direction r of the rotating member 16, the first outer wire 411a is located downstream of the opening 410, and the third outer wire 411c is located upstream of the opening 410, and compared with the third outer wire 411c, the sealing portion 422 will be disconnected with the first outer wire 411a first; the first outer wire 411a includes a first outer wire main body 411a1 and at least one first protruding portion 411a2, which protrudes from the first outer wire main body 411a1 in a direction away from the opening 410 in the rotation direction r; the third outer wire 411c includes a third outer wire main body 411c1 and at least one second protruding portion 411c2, which protrudes from the second outer wire main body 411c1 in a direction of the opening 410 in the rotation direction r.

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

[0054] The second welding wire 412 includes a first inner welding wire 412a arranged at the first side plate 41a, a second inner welding wire 412b arranged at the second side plate 41b, a third inner welding wire 412c arranged at the third side plate 41c, and a fourth inner welding wire 412d arranged at the fourth side plate 41d, the first inner welding wire 412a and the third inner welding wire 412c are oppositely arranged, the second inner welding wire 412b and the fourth inner welding wire 412d are oppositely arranged, both ends of the first inner welding wire 412a and both ends of the third inner welding wire 412c are connected with the second inner welding wire 412b and the fourth inner welding wire 412d, that is, the first inner welding wire 412a, the second inner welding wire 412b, the third inner welding wire 412c and the fourth inner welding wire 412d are sequentially connected, and the opening 410 is located between the first inner welding wire 412a, the second inner welding wire 412b, the third inner welding wire 412c and the fourth inner welding wire 412d.

[0055] In the rotation direction r of the rotating member 16, the first inner welding wire 412a is located downstream of the opening 410, and the third inner welding wire 412c is located upstream of the opening 410, compared with the third inner welding wire 412c, the sealing portion 422 will be disconnected with the first inner welding wire 412a first; the first inner welding wire 412a includes a first inner welding wire body 412a1 and at least one fifth protruding portion 412a2, the fifth protruding portion 412a2 protrudes from the first inner welding wire body 412a1 in a direction away from the opening 410 in the rotation direction r; the third inner welding wire 412c includes a third inner welding wire body 412c1 and at least one sixth protruding portion 412c2, the second protruding portion 412c2 protrudes from the second inner welding wire body 412c1 in a direction of the opening 410 in the rotation direction r.

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

[0057] In order to make the sealing portion 422 and the bearing member 41 more smoothly disconnected, the first protruding portion 411a2, the second protruding portion 411c2, the fifth protruding portion 412a2 and the sixth protruding portion 412c2 have the following deformation mode:

[0058] In some embodiments, the first protruding portion 411a2, the second protruding portion 411c2, the fifth protruding portion 412a2 and the sixth protruding portion 412c2 are all arranged in multiple in the left-right direction.

[0059] In some embodiments, 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 along the rotation direction r.

[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 arranged in a substantially triangular shape, preferably, one corner of the triangle is substantially directed toward the rotation direction r, so that the seal portion 422 can be disconnected from the first / second wire 411 / 412 by firstly disconnecting from the corner, then gradually expanding to disconnect from the protrusion, and finally easily disconnecting from the 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 arranged in a substantially circular arc shape, preferably, the line connecting the vertex of the circular arc and the center of the circular arc is substantially parallel to the rotation direction r, so that the seal portion 422 can be disconnected from the first / second wire 411 / 412 by firstly disconnecting from the vertex of the circular arc, then gradually expanding to disconnect from the protrusion, and finally easily disconnecting from the 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 regular polygons such as rhombus, pentagon, hexagon, etc., or irregular polygons, as long as the protrusions have at least one corner with the corner tip directed toward the same direction as the rotation direction r, so as to facilitate the disconnection of the seal portion 422 from the carrier 41.

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

[0064] The third outer weld wire 411c is provided with at least one second protrusion 411c2, and the third inner weld wire 412c is provided with at least one sixth protrusion 412c2. Thus, through the second protrusion 411c2, the sealing part 422 can be smoothly disengaged from the first weld wire 411, and through the sixth protrusion 412c2, the sealing part 422 can be smoothly disengaged from the second weld wire 412. Preferably, along the left-right direction, multiple second protrusions 411c2 are spaced apart, and multiple sixth protrusions 412c2 are also spaced apart. This allows the sealing part 422 to simultaneously disengage from the carrier 41 / third outer weld wire 411c / third inner weld wire 412c 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 welding line 411a. Correspondingly, at least one of the left and right ends of the first inner welding line 412a, the left and right ends of the third inner welding line 412c, and the left and right ends of the third outer welding line 411c may also be provided with protrusions similar to the third protrusion 411a3 and the fourth protrusion 411a4.

[0066] like Figure 4 As shown, along the rotation direction r, in the weld line upstream of the opening 410, the protrusion (sixth protrusion 412c2) provided in the weld line closest to the opening 410 (third inner weld line 412c) is preferably generally triangular, and in the weld line downstream of the opening 410, the protrusion (first protrusion 411a2) provided in the weld line furthest from the opening 410 (first outer weld line 411a) is preferably generally triangular, so as to facilitate the sealing part 422 to begin to disengage from the weld line. More preferably, the orientation of one corner of the triangle is in the same direction as the rotation direction r of the rotating member 16.

[0067] The following is combined with Figure 2 and Figure 3 Continuing with the description of the mixing components.

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

[0069] In the utility model, since the sealing member 42 can move relative to the developing housing 11 along with the rotation of the rotating member 16, finally, the sealing member 42 after being separated from the bearing member 42 will be wound on the rotating member 16, the sealing member 42 wound on the rotating member 16 can be used as a stirring blade to realize the function of stirring the developer T, therefore, the stirring assembly can be considered to comprise the rotating member 16 and the sealing member 42.

[0070] However, since the sealing member 42 needs to be combined with the bearing member 41 in a removable manner, the material of the sealing member 42 needs to be softer than the material of the conventional stirring blade, for example, the stirring blade is made of hard PET and the sealing member 42 is made of soft PVE, in order to enable the sealing member 42 wound on the rotating member 16 to stir the developer T, the rotating member 16 further comprises a reinforcing portion 163 connected with the shaft body 161, the reinforcing portion 163 is used for enhancing the strength of the sealing member 42, in this way, it is not necessary to additionally arrange a stirring blade with higher hardness than the sealing member 42 on the rotating member 16, which is favorable for reducing the cost of the stirring assembly.

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

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

[0073]

Conversion assembly

[0074] Figure 5 is an exploded view of part of the driving end of the process cartridge involved in the utility model; Figure 6 is a perspective view of the driven member in the process cartridge involved in the utility model; Figure 7 is a perspective view from the front upper side when the conversion assembly is installed to the process cartridge; Figure 8A is a state diagram when the driving force cannot be transmitted between the driving member and the driven member in the conversion assembly; Figure 8B is a state diagram when the driving force can be transmitted between the driving member and the driven member in the conversion assembly.

[0075] In the actual production process of the process cartridge 100, after the process cartridge 100 is assembled, the factory needs to test the process cartridge 100, specifically, a little developer is added to the developing cavity 14b or the developing roller 12, and then the process cartridge 100 is installed to the image forming equipment to perform printing test.

[0076] As described above, the rotating member 16 rotates by receiving a driving force from the driving force receiving assembly, and one end of the sealing member 42 is connected to the rotating member 16. This allows the sealing member 42 to move relative to the developing housing 11 as the rotating member 16 rotates. During the on-machine testing of the processing cartridge 100, the rotating member 16 will be driven, and consequently, the sealing member 42 will also be driven. Finally, the sealing part 422 will disengage from the carrier member 41, and the sealing member 42 will change from a sealed state to a desealed state. However, at this time, the processing cartridge 100 has not yet reached the end user. Therefore, to prevent the sealing member 42 from changing from a sealed state to a desealed state during the on-machine testing of the processing cartridge 100, the processing cartridge... The 100 also includes a conversion component 6, which has a connected state and a disconnected state. In the connected state, the rotating member 16 can rotate by receiving a driving force from the driving force receiving component through the conversion component 6. In the disconnected state, the rotating member 16 does not receive a driving force from the driving force receiving component and remains stationary. The conversion component 6 is configured to be able to switch from the connected state to the disconnected state. Preferably, the conversion component 6 can switch between the connected state and the disconnected state. In this way, even if the conversion component 6 is assembled into the connected state during the assembly of the processing box 100, it can be switched back to the connected state without disassembling the processing box 100.

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

[0078] like Figure 5 As shown, the processing box 100 also 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 referred to as "first driving force receiving member 31"), the driving force transmission assembly 5 including at least a first transmission member 51, a developing driving member 54 and a stirring driving member 55, wherein 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 drive 54 receives the driving force from the first transfer member 51, thereby driving the developing roller 12 to rotate. At the same time, the first transfer member 51 is also combined with the conversion assembly 6, and the stirring drive 55 is also combined with the conversion assembly 6. Thus, the conversion assembly 6 can control whether the driving force of the first transfer member 51 is transmitted to the stirring drive 55.

[0080] In some embodiments, the processing cartridge 100 further comprises a powder feeding driving member 56, which can also receive the driving force from the first transmission member 51, and in turn, the powder feeding driving member 56 drives the powder feeding member 13 to rotate.

[0081] In some embodiments, the driving force transmission assembly 5 can further comprise more transmission members, such that the developing driving member 54, the powder feeding driving member 56 and the stirring driving member 55 correspond to one transmission member respectively, for example, Figure 5 As shown, the first transmission member 51, the second transmission member 52 and the third transmission member 53 are coaxially arranged, and 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, the third transmission member 53 is used to be combined with the conversion assembly 6, and 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 can also be arranged in different axes, or in other words, the first transmission member 51, the second transmission member 52 and the third transmission member 53 are separately formed, 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 transmit the driving force to the corresponding components respectively.

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

[0084] The conversion assembly 6 comprises 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 from the first driving force receiving member 31, and in particular, 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 the driving force from the first driving force receiving member 31 can be received. The driven member 62 is configured to transmit the driving force to the rotating member 16, and in particular, 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 located at 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 located at the second position, the conversion assembly 6 is in a connected state, and the sealing assembly 4 is switched from the sealed state to an unsealed state. The pushing member 64 is configured to apply a pushing force to the intermediate member 63, so that the intermediate member 63 is kept at least at the second position.

[0085] In particular, the driving member 61 comprises a gear body 614, a through hole 612 and a first transmission portion 613. The through hole 612 is arranged through the gear body 614 along the rotation axis of the gear body 614, so as 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, so as to transmit the driving force to the intermediate member 63. For example, the first transmission portion 613 is a groove or a protrusion arranged on the gear body 614. Figure 5 An example in which the first transmission portion 613 is a groove is given. Preferably, the groove 613 is in communication with the through hole 612, so as to facilitate the transmission of the driving force between the first transmission portion 613 and the intermediate member 63.

[0086] The intermediate member 63 comprises an intermediate body 631 and an intermediate transmission portion 632 connected to the intermediate body 631. The intermediate transmission portion 632 is configured to be combined with the first transmission portion 613, so as to realize the transmission of the driving force between the gear body 614 and the intermediate member 63. Preferably, the intermediate body 631 and the intermediate transmission portion 632 are integrally formed. Figure 5 An example in which the intermediate transmission portion 632 protrudes from the intermediate body 631 is also given. When the first transmission portion 613 is a protrusion, the intermediate transmission portion 632 can be configured as a groove matched with the protrusion, or as another protrusion matched with the protrusion.

[0087] As shown in FIG. 1, the intermediate member 63 is in the first position, and the conversion assembly 6 is in the cut-off state. The sealing assembly 4 is in the sealed state. Figure 6As shown, the driven member 62 comprises a driven main body 621, a second transmission part 622 and a driven transmission part 626, the driven transmission part 626 is connected with the driven main body 621 for transmitting driving force to the rotating member 16, for example, the driven transmission part 626 is directly or indirectly combined with the stirring driving member 55 to transmit driving force to the stirring driving member 55, and then the rotating member 16 is driven to rotate by the stirring driving member 55; the second transmission part 622 is used to combine with the intermediate member 63 / intermediate transmission part 632 to receive driving force from the first transmission part 613, so as to drive the driven member 62 to rotate, Figure 6 It is given that the second transmission part 622 is provided as a groove, and the driven transmission part 626 is provided as a gear. Correspondingly, the stirring driving member 55 is also provided as a gear.

[0088] In the implementable manner, the second transmission part 622 can also be provided as a protrusion. It can be seen that the shape of the first transmission part 613, the shape of the intermediate transmission part 632 and the shape of the second transmission part 622 can not be limited, as long as the driving force can be transmitted through the first transmission part 613, the intermediate transmission part 632 and the second transmission part 622.

[0089] Further, the driven member 62 further comprises a first limiting part 624, a second limiting part 625 and a retaining part 623 arranged along the circumferential direction of the driven main body 621, the retaining part 623 is located between the first limiting part 624 and the second limiting part 625, the first limiting part 624 and the second limiting part 625 are used to retain the intermediate member 63 / intermediate transmission part 632 in the retaining part 623, along the circumferential direction of the driven main body 621, the second limiting part 624 is arranged adjacent to the second transmission part 622, so that when the intermediate transmission part 632 is no longer limited by the second limiting part 624, the intermediate transmission part 632 can be combined with the second transmission part 622.

[0090] Specifically, as shown, Figure 6 Two protruding bodies 620 are formed by protruding radially from the driven main body 621, along the circumferential direction of the driven main body 621, the two protruding bodies 620 are arranged at intervals, and the second transmission part 622 is located between the two protruding bodies 620, and each protruding body 620 is provided with the first limiting part 624, the second limiting part 625 and the retaining part 623.

[0091] In some embodiments, the protruding body 620 can also not be provided, and the first limiting part 624, the second limiting part 625, the retaining part 623 and the second transmission part 622 can also be directly provided on the driven main body 621.

[0092] In some embodiments, the driven member 62 further comprises a third limiting portion (axial limiting portion) 627 connected with the driven main body 621, when the process cartridge 100 / developing cartridge 10 is completed to be assembled, at least a portion of the driven main body 621 passes through the through hole 612, at least a portion of the driven transmission portion 626 is located at one side of the gear body 614 by the limitation of the third limiting portion 627, at least a portion of the intermediate member 63 is located at the other side of the gear body 614, thereby, the control of the intermediate member 63, the continuous rotation of the gear body 614 and the driving force transmission from the intermediate driven transmission portion 626 to the rotating member 16 can not interfere with each other, preferably, the driving member 61, the driven member 62 and the intermediate member 63 are coaxially arranged, thus, the overall structure of the conversion assembly 6 can be simplified, which is beneficial to improve the space utilization of the process cartridge 100, and further realizes the miniaturization of the process cartridge 100.

[0093] As shown in Figure 8A Before the end user uses the process cartridge 100, the intermediate member 63 is located at the first position, due to the abutment between the urging member 64 and the intermediate member 63, under the urging effect of the urging member 64, the intermediate transmission portion 632 is kept in the holding portion 623, along the radial direction of the intermediate member 63, the size of the intermediate transmission portion 632 is greater than the maximum size of the protruding body 620, even if the intermediate member 63 slightly shakes, the intermediate transmission portion 632 can still be limited in the holding portion 623 by the first limiting portion 624 and the second limiting portion 625, at this time, the first transmission portion 613 and the second transmission portion 622 are not combined with the intermediate transmission portion 632, the gear body 614 is free to rotate under the driving force from the first driving force receiving member 31, but the driven transmission portion 626 is not driven and keeps stationary, correspondingly, the stirring driving member 55 and the rotating member 16 both keep stationary, thus, the factory can add a little developer T into the developing cavity 14b to test the process cartridge 100, the sealing member 42 will not be changed from the sealed state to the unsealed state.

[0094] In some embodiments, when the intermediate member 63 is located at the first position, the urging member 64 can not necessarily apply the urging force to the intermediate member 63, the intermediate member 63 is kept at the first position by other components or its own gravity.

[0095] As shown in Figure 8BAs shown, before the end user starts to use the processing cartridge 100, or after the on-machine test of the processing cartridge 100 is completed, only a push tool is needed to push the intermediate piece 63 to overcome the pushing force of the pushing piece 64, so that the intermediate transmission part 632 goes beyond the first limiting part 624, and under the gravity of the intermediate piece 63 itself and the pushing force of the pushing piece 64, the intermediate transmission part 632 combines with the first transmission part 613 (for example, the intermediate transmission part 632 enters the first transmission part 613); as mentioned above, since the gear body 614 can receive the driving force from the first driving force receiving piece 31 to keep rotating, the stop position of the gear body 614 will be random, and accordingly, the position of the second transmission part 622 is also random, and in Figure 8B some embodiments, the second transmission part 622 and the first transmission part 613 are opposite in the radial direction of the gear body 614, and the intermediate transmission part 632 can combine with the first transmission part 613 and the second transmission part 622 at the same time, and finally, with the rotation of the gear body 614, the driving force is transmitted to the driven piece 62 through the first transmission part 613, the intermediate transmission part 632 and the second transmission part 622 in turn, and then the driving force continues to be transmitted to the stirring driving piece 55 through the driven transmission part 626, and the rotating piece 16 is driven.

[0096] In some embodiments, when the intermediate transmission part 632 goes beyond the first limiting part 624, even if the second transmission part 622 and the first transmission part 613 are not opposite in the radial direction of the gear body 614, at this time, the intermediate transmission part 632 cannot combine with the first transmission part 613 and the second transmission part 622 at the same time, but with the continuous rotation of the gear body 614, the first transmission part 613 will always reach a position opposite to the second transmission part 622 in the radial direction of the gear body 614 at a certain time, and since the intermediate piece 63 is pushed by the pushing piece 64, under the gravity of the intermediate piece 63 itself and the pushing force of the pushing piece 64, the intermediate transmission part 632 combines with the first transmission part 613 and the second transmission part 622 at the same time, at this time, the intermediate piece 63 reaches the second position, and the driving force of the first driving force receiving piece 31 can be transmitted to the rotating piece 16 through the conversion assembly 6.

[0097] In some embodiments, the protective cover 17 and the bracket 18 also have an operation hole 170 therebetween, as Figure 7 shown, at least a part of the intermediate piece 63 is exposed through the swing operation hole 170, so that the end user can operate the intermediate piece 63 through the operation hole 170 to make the intermediate piece 63 deviate from the first position, or return to the first position from the second position; preferably, the first limiting part 624 is arranged as an inclined surface inclined with respect to the left-right direction, so as to facilitate the intermediate piece 63 to go beyond the first limiting part 624.

[0098]

Other Descriptions

[0099] Based on the inventive concept of the utility model, the utility model still 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 implementable 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 make the sealing member 42 switch 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, the direction conversion member can be arranged to force the sealing member 42 to switch from the sealed state to the unsealed state.

[0101] 2. The bearing member 41 can also not be arranged, that is, the bearing member 41 is formed integrally with the partition plate 15, at this time, the partition plate 15 can also be regarded as a bearing member, and the welding line will be formed on the partition plate 15.

[0102] 3. Whether the bearing member 41 is arranged or not, that is, whether the bearing member 41 is formed integrally with the partition plate 15 or not, the welding line can also be arranged on the sealing member 42.

[0103] 4. Since the sealing member 42 is installed in a manner other than the above-mentioned welding, it can also be achieved by the above-mentioned bonding, magnetic connection and the like, therefore, the sealing assembly 4 can be described as at least comprising the sealing member 42, the sealing member 42 is used for sealing the communication hole 151, and is arranged to be capable of switching from the sealed state to the contact sealing state.

[0104] 5. According to design requirements, the number of welding lines can also be more, for example, a third welding line, a fourth welding line, …, no matter how many welding lines are arranged, adjacent two welding lines always form a protection space capable of accommodating the developer, in general, along the rotation direction r, the protruding part arranged in the welding line upstream of the opening 410 always protrudes from the corresponding welding line body towards the opening 410, and the protruding part arranged in the welding line downstream of the opening 410 always protrudes from the corresponding welding line body away from the opening 410.

[0105] 6. The above describes an embodiment of arranging the conversion assembly 6 in the driving force transmission assembly 5, however, according to the inventive concept of the utility model, 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 connected state and the cut-off state.

[0106] 7. The sealing assembly 4 and the stirring assembly described above are arranged in the developing cartridge 10, thus, the technical scheme of the present application can be used not only in the process cartridge 100 comprising the developing cartridge 10 and the drum cartridge 20 simultaneously, but also in the developing cartridge 10 arranged independently of the drum cartridge 20, and the developing cartridge 10 can be detachably mounted to the image forming device.

[0107] 8. When the process cartridge 100 / developing cartridge 10 does not need to be tested, the conversion assembly 6 can not be arranged.

[0108] 9. In some embodiments, in order to facilitate the mounting of the carrier 41, an auxiliary part can be arranged on the upper surface of the partition plate 15 in advance, and the carrier 41 is indirectly fixed on the upper surface of the partition plate 15.

[0109]

Advantages

[0110] According to the above description, the present application can produce the following effects:

[0111] 1. Compared with the space of the developing chamber 14b, the space of the developer chamber 14a is much larger, and the sealing part 42 is arranged on the side of the partition plate 15 facing the developer chamber 14a, which not only makes the sealing part 42 easier to install, but also makes the sealing part 42 not interfere with the developing roller 12 and / or the powder feeding roller 13 in the developing chamber 14b.

[0112] 2. One end of the sealing part 42 is connected with the partition plate 15 / carrier 41, and the other end is connected with the rotating part 16, so that the sealing part 42 can move relative to the developing housing 11 with the rotation of the rotating part 16, and finally, the sealing part 42 can be changed from the sealed state to the unsealed state, without the need for manual unsealing of the sealing part 42, thereby reducing the use operation steps of the end user, and improving the use experience of the end user, especially for the end user who uses the image forming device for the first time, the structure will make the image forming device not be unable to image because the process cartridge 100 does not remove the sealing part 42.

[0113] 3. As Figure 2As shown by the dotted line, during the movement of the seal 42 relative to the developing housing 11 with the rotation of the rotating member 16, the seal 42 is pulled upward by the rotating member 16, and the developing agent T added during the on-machine test of the process cartridge 100 will be pushed and gathered by the raised seal 42 / seal portion 422 toward the developing housing 11, however, due to the winding of the seal 42 on the rotating member 16, in the area where the developing agent T is gathered, the seal 42 / seal 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 / seal portion 422, and finally, the situation that the seal 42 / seal portion 422 cannot continue to move occurs.

[0114] Even if the gathered developing agent T is more, due to the fact that the left-right direction size of the process cartridge 100 is much larger than the front-rear direction size, in the case of the same volume of developing agent T, the developing agent T above the seal portion 422 of the present application will be more dispersed, and it is easier to hinder the movement of the seal 42 / seal portion 422.

[0115] 4. Since the seal 42 can be changed from the sealed state to the unsealed state with the rotation of the rotating member 16, and finally, the seal 42 is wound on the rotating member 16, therefore, the developing housing 11 can not have to additionally provide a hole for allowing the seal 42 to pass through, not only the structure of the developing housing 11 can be simplified, but also the problem of the developing agent T leakage caused by the setting of the hole can not be considered.

[0116] 5. In the prior art, the material hardness of the seal 42 is much lower than the hardness of the stirring blade, in the present application, by providing the reinforcing portion 163 in the rotating member 16, the seal 42 wound on the rotating member 16 is reinforced by abutting against the reinforcing portion 163, therefore, the seal 42 in the unsealed state can be used as a stirring blade, and the stirring blade can not be additionally provided on the rotating member 16, which is conducive to reducing the material cost and assembly cost of the developing cartridge 10 / process cartridge 100.

[0117] 6. Before the end user starts to use the process cartridge 100, in order to avoid that the seal 42 has been changed to the unsealed state, the conversion assembly 6 is further provided in the process cartridge 100 / developing cartridge 10, the conversion assembly 6 has the connected state and the disconnected state, before the end user starts to apply force to the process cartridge 100, the conversion assembly 6 is in the disconnected state, even if the process cartridge 100 is subjected to the on-machine test, the seal 42 can still remain in the sealed state.

Claims

1. A process cartridge detachably mountable to an image forming apparatus, characterized by comprising: The developing cartridge includes: a developing housing, a partition provided in the developing housing to divide the developing housing into a developer chamber for accommodating a developer and a developing chamber, the partition having a communication hole communicating the developer chamber and the developing chamber; a first driving force receiving member for receiving a driving force from an image forming apparatus; a developing roller receiving the driving force from the first driving force receiving member, rotatably provided in the developing chamber, for carrying the developer; a rotating member rotatably provided in the developer chamber; a sealing assembly connected to the rotating member, the sealing assembly being shifted from a sealing state in which the sealing assembly seals the communication hole to a seal release state in which the sealing assembly does not seal the communication hole as the rotating member rotates; a switching assembly having a cut-off state in which the rotating member is kept stationary without receiving the driving force from the first driving force receiving member and the sealing assembly is in the sealing state, and a connection state in which the rotating member is rotatable by receiving the driving force from the first driving force receiving member through the switching assembly and the sealing assembly is shifted from the sealing state to the seal release state.

2. The process cartridge according to claim 1, wherein, The switching assembly includes: a driving member for receiving the driving force from the first driving force receiving member; a driven member for transmitting the driving force to the rotating member; an intermediate member configured to be movable between a first position and a second position, the switching assembly being in the cut-off state when the intermediate member is in the first position, and the switching assembly being in the connection state when the intermediate member is in the second position; a pushing member for applying a pushing force to the intermediate member so that the intermediate member is kept at least in the second position.

3. The process cartridge of claim 2 wherein, The driving member, the driven member, and the intermediate member are coaxially arranged.

4. The process cartridge of claim 2 wherein, The driving member includes a gear body, a through hole passing through the gear body along an axis of rotation of the gear body to allow a portion of the driven member to pass through, and a first transmission portion for engaging with the intermediate member to transmit the driving force to the intermediate member, the gear body being configured to receive the driving force from the first driving force receiving member.

5. The process cartridge of claim 4 wherein, The driven member includes a driven body, a second transmission portion for engaging with the intermediate member to receive the driving force from the first driving force receiving member to drive the rotating member to rotate, and a driven transmission portion connected to the driven body for transmitting the driving force to the rotating member.

6. The process cartridge of claim 5 wherein, The driven member further includes a first limiting portion, a second limiting portion, and a holding portion arranged along a circumferential direction of the driven body, the holding portion being located between the first limiting portion and the second limiting portion, the first limiting portion and the second limiting portion being configured to hold the intermediate member at the holding portion. The second limiting portion is arranged adjacent to the second transmission portion along the circumferential direction of the driven body.

7. The process cartridge of claim 6 wherein, Two protruding bodies are radially protruded from the driven body, the two protruding bodies are arranged apart from each other along the circumferential direction of the driven body, the second transmission portion is located between the two protruding bodies, and each of the two protruding bodies is provided with the first limiting portion, the second limiting portion, and the holding portion.

8. The process cartridge of claim 7 wherein, The driven member further includes a third limiting portion connected to the driven body, at least a portion of the driven transmission portion is located on one side of the gear body and at least a portion of the intermediate member is located on the other side of the gear body by the limitation of the third limiting portion when at least a portion of the driven body passes through the through hole upon completion of assembly of the developing cartridge.

9. The process cartridge of claim 7 wherein, The first transmission part and the second transmission part are both provided as grooves, and the intermediate part comprises an intermediate body and an intermediate transmission part connected to the intermediate body, the intermediate transmission part being used to combine with the first transmission part and the second transmission part to transmit the driving force. In the radial direction of the intermediate part, the size of the intermediate transmission part is greater than the maximum size of the protruding body.

10. A process cartridge, characterized by, The processing box comprises a drum box and the developing box as claimed in any one of claims 1-9, and the developing box is movably connected with the drum box.

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