Developing cartridge

Abstract

The utility model provides a developing box can be detachably installed to the imaging equipment with detection spare, and the developing box includes developing casing, developing roller and the counter component for interacting with detection spare, the counter component includes the knob, rotatable spare and the forced pushing spare, the knob is used for the knob detection spare, when rotatable spare receives the driving force from the imaging equipment and rotates, the knob knob detection spare, rotatable spare is in rotatable position, when rotatable spare does not rotate, and the knob does not knob detection spare, rotatable spare is in stationary position, when the forced pushing spare is located non forced pushing position, rotatable spare is in rotatable position, when the forced pushing spare moves from non forced pushing position to forced pushing position, the forced pushing spare is used for receiving the force from the developing box outside to apply to the forced pushing rotatable spare, and rotatable spare converts from stationary position to rotatable position, through such setting, the counter component can reset fast, and the operation mode is simple and convenient, has reduced the operation difficulty of user.

Description

Technical Field

[0001] This utility model relates to the field of electrophotographic imaging technology, and in particular to a developing cartridge that can be detachably installed onto an imaging device. Background Technology

[0002] As a consumable material necessary for imaging equipment to perform imaging operations, the developing cartridge is equipped with a counting component. The counting component can trigger a detection device set in the imaging equipment. The imaging equipment identifies relevant information about the developing cartridge by using parameters such as the contact duration, number of contact, and contact interval between the counting component and the detection device. For example, it can identify whether the developing cartridge is new, the lifespan of the developing cartridge, and its model.

[0003] During the use of the developing cartridge, the imaging device may need to re-inspect the developing cartridge, for example, when the developer in the developing cartridge used for imaging by the imaging device is consumed and the user replenishes the developer; that is, the counting component needs to be reset so that the imaging device can detect it. Therefore, how to reset the counting component simply and quickly is a problem that researchers need to consider. Utility Model Content

[0004] This utility model provides a developing cartridge employing the following technical solution to solve at least one of the aforementioned technical problems. The specific technical solution is as follows:

[0005] A developing cartridge, detachably mounted to an imaging device equipped with a detection element, the developing cartridge includes...

[0006] The developer housing has a cavity for containing the developer.

[0007] The developing roller, rotatably mounted in the developing housing, is used to carry the developing agent;

[0008] A counting component is used to interact with the detection element, enabling the imaging device to obtain parameter information of the developing cartridge;

[0009] The counting component includes a toggle member, a rotatable member, and a pusher member. The toggle member is used to aggle the detection member. The toggle member and the rotatable member are connected to each other. The rotatable member can switch between a stationary position and a rotatable position.

[0010] When the rotatable part receives a driving force from the imaging device and rotates, and the actuating part actuates the detection part, the rotatable part is in a rotatable position.

[0011] When the rotatable part does not rotate and the actuating part does not actuate the detection part, the rotatable part is in a stationary position.

[0012] The pusher can switch between a pusher position and a non-pusher position. When the pusher is in the non-pusher position, the rotatable part is in the rotatable position. When the pusher moves from the non-pusher position to the pusher position, the pusher is used to receive a force applied from outside the developing cartridge to push the rotatable part, and the rotatable part switches from the stationary position to the rotatable position.

[0013] The rotatable component includes a rotatable component body and an actuating component disposed on the rotatable component body. The actuating component includes a mating portion for keeping the rotatable component in a stationary position and at least one forced pushing portion for being forced by the forced pushing component. When viewed along the rotation axis of the rotatable component, at least a portion of the mating portion coincides with the forced pushing portion in the radial direction of the rotatable component.

[0014] The rotatable component includes a mating portion for holding the rotatable component in a stationary position. The mating portion includes a first extension and a second extension that are connected to each other. Along the axial direction of the developing roller, the second extension is further away from the actuating component than the first extension. Along the rotation direction of the rotatable component, the size of the second extension is smaller than the size of the first extension.

[0015] The rotatable component includes a mating portion for holding the rotatable component in a stationary position. The mating portion includes a first extension and a second extension that are connected to each other. Along the axial direction of the developing roller, the second extension is further away from the actuating component than the first extension, and a notch is formed between the first extension and the first extension.

[0016] The rotatable component includes a rotatable component body and an actuating component disposed on the rotatable component body. The actuating component includes a mating part for keeping the rotatable component in a stationary position and at least one forced pushing part for being forced by the forced pushing component. Along the rotation direction of the rotatable component / actuating component, the size of the mating part does not exceed the size of the forced pushing part.

[0017] The counting assembly further includes a connecting member, which includes a guide rail for guiding the rotation of the rotatable component and a limiting portion for restricting the rotation of the rotatable component. The guide rail includes at least a second protrusion, and the limiting portion includes a first protrusion and a limiting cavity. In the axial direction of the developing roller, both the first and second protrusions are configured to extend from the developing housing toward a direction away from the receiving cavity. In the circumferential direction of the guide rail, the limiting cavity is formed as a groove between the first and second protrusions to prevent a portion of the rotatable component from disengaging.

[0018] In the axial direction of the developing roller, the size of the first protrusion is smaller than the size of the second protrusion.

[0019] The rotatable part body is provided with a toothed part and a toothless part. Along the rotation direction of the rotatable part, the toothed part and the toothless part are arranged adjacent to each other. The toothed part is used to receive driving force, while the toothless part cannot receive driving force.

[0020] The developing chamber is also provided with a stirring component and a stirring gear. The stirring component is used to stir the developer in the containing cavity, and the stirring gear is used to receive the driving force from the imaging device to drive the stirring component to rotate. The stirring gear is also used to transmit the driving force to the rotatable component.

[0021] When the toothed part is opposite to the stirring gear, the rotatable part is in a rotatable position; when the missing toothed part is opposite to the stirring gear, the rotatable part is in a stationary position.

[0022] The pusher includes a pressing part, a pushing part, and a retaining part. The pressing part and the pushing part are connected to each other. The pressing part is used to receive the force applied from outside the developing cartridge, forcing the pushing part to push the rotatable part, so that the rotatable part changes from a stationary position to a rotatable position. The retaining part is used to keep the pushing part in a non-pushing position.

[0023] The developing cartridge also includes a drive end cover that is coupled to the developing housing along the axial direction of the developing roller, and at least a portion of the pressing portion is exposed through the drive end cover.

[0024] Compared with the prior art, in the developing cartridge provided by this utility model, the size of the second extension is smaller than that of the first extension along the rotation direction of the rotatable member. With this arrangement, when the pushing member forces the rotatable member to rotate, the second extension is more likely to deform and thus more likely to pass over the first protrusion and disengage from the restricting cavity. Furthermore, when the developing cartridge needs to count again, the pressing part can receive the force applied from outside the developing cartridge, forcing the rotatable member to change from a stationary position to a rotatable position. The counting component can quickly reset and start counting again. This operation method is simple and convenient, reducing the difficulty of operation for users. Attached Figure Description

[0025] Figure 1 This is a perspective view of the developing cartridge involved in this utility model.

[0026] Figure 2 This is a perspective view of the bottom shell, drive end cover, stirring gear, and counting assembly of the developing cartridge involved in this utility model.

[0027] Figure 3 This is an exploded view of the bottom shell, drive end cover, stirring gear, and counting assembly of the developing cartridge involved in this utility model.

[0028] Figure 4A and Figure 4B This is a perspective view of the bottom shell, stirring gear, and counting assembly of the developing cartridge involved in this utility model.

[0029] Figure 5A and Figure 5BThis is a perspective view of the rotatable component of the counting assembly of the developing cartridge involved in this utility model.

[0030] Figure 6 This is a plan view of the rotatable component of the counting assembly of the developing cartridge involved in this utility model, viewed along the axial direction of the developing roller.

[0031] Figure 7 This is a partial perspective view of the bottom shell of the developing chamber of the developing cartridge involved in this utility model.

[0032] Figure 8 This is a perspective view of the pusher of the counting assembly of the developing cartridge involved in this utility model. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0034] The developing cartridge 100 is detachably mounted to an electrophotographic imaging device (hereinafter referred to as the "imaging device"), such as... Figure 1 and Figure 2 As shown, the developing cartridge 100 includes a developing housing 10 and a developing roller 20 rotatably disposed in the developing housing 10. The developing housing 10 includes a bottom shell 11 and a top cover 12 joined together in a direction intersecting the axial direction of the developing roller 20. A receiving cavity 13 for containing developer is formed between the bottom shell 11 and the top cover 12. The developing roller 20 is used to carry the developer and supply the developer to a photosensitive drum disposed opposite to the developing roller 20 outside the developing cartridge 100.

[0035] The developing cartridge 100 also includes a powder feeding roller and a stirring component, both rotatably disposed within the developing housing 10. The stirring component stirs the developer and supplies it to the powder feeding roller, which in turn supplies the developer to the developing roller 20. Figure 2 and Figure 3 As shown, the developing cartridge 100 is also provided with a stirring gear 40 and a driving force receiving member 30 for receiving driving force from the imaging device. The stirring gear 40 is used to receive driving force from the driving force receiving member 30 to drive the stirring member to rotate.

[0036] In some embodiments, the stirring gear 40 includes a first gear 41 and a second gear 42 arranged coaxially, one of which is used to receive driving force and the other is used to transmit driving force to other components. In some specific embodiments, in the axial direction of the developing roller 20, the second gear 42 is closer to the developing housing 10 / receiving cavity 13 than the first gear 41, and the radial dimension of the first gear 41 is smaller than the radial dimension of the second gear 42.

[0037] like Figure 1 and Figure 2As shown, the developing cartridge 100 also includes a drive end cover 50 connected to the developing housing 10 along the axial direction of the developing roller 20. A portion of the driving force receiving member 30 is covered by the drive end cover 50, and at least a portion of the stirring gear 40 is covered by the drive end cover 50.

[0038] In some embodiments, the developing cartridge 100 is also provided with a handle 60 for a user to grip.

[0039] The imaging device is equipped with a detection component for detecting the developing cartridge 100, such as... Figure 1 As shown, the developing cartridge 100 is also provided with a counting component 70 for interacting with the detection component. Through the interaction between the detection component and the counting component 70, the imaging device can obtain parameter information of the developing cartridge 100, such as whether the developing cartridge 100 is brand new, the service life of the developing cartridge 100, and the model of the developing cartridge 100. The process of the detection component interacting with the counting component 70 is called the counting process. A part of the counting component 70 is covered by the drive end cover 50.

[0040] like Figure 3 , Figure 4A and Figure 4B As shown, the counting assembly 70 includes a rotatable component 71, a connecting component 72, a pushing component 73, and a toggle component 74. The rotatable component 71 and the toggle component 74 are interconnected, and the toggle component 74 is used to actuate the detection component; as shown Figure 5A and Figure 5B As shown, the rotatable component 71 includes a rotatable component body 711 and an actuating component 712 disposed on the rotatable component body 711. In some embodiments, the actuating component 712 is disposed at the rotation center of the rotatable component body 711, or in other words, the rotation axis of the rotatable component body 711 passes through the actuating component 712.

[0041] The rotatable body 711 has an outer wall 711a and an inner wall 711b arranged opposite each other in the radial direction of the rotatable body 71. The rotatable body 711 is provided with a toothed portion 7111 and a toothless portion 7112 located on the outer wall 711a. The toothed portion 7111 and the toothless portion 7112 are arranged adjacent to each other along the rotation direction of the rotatable body 71. The rotatable body 71 has a rotatable position and a stationary position. When the toothed portion 7111 is opposite to and meshes with the stirring gear 40, the rotatable body 71 can receive the driving force from the imaging device and rotate, thereby actuating the detector 74. At this time, the rotatable body 71 is in the rotatable position, and the counting component 70 can count. When the toothless portion 7112 is opposite to the stirring gear 40 and the toothless portion 7112 cannot receive the driving force, the rotatable body 71 does not rotate, the actuating component 74 cannot actuate the detector, the rotatable body 71 is in the stationary position, and the counting component 70 stops counting.

[0042] In some embodiments, when the rotatable member 71 rotates, the actuating member 712 rotates together with the rotatable member 71. The actuating member 712 includes an actuating member body 7121, a mating part 7122, and at least one forced pushing part 7123. The mating part 7122 and the forced pushing part 7123 are both disposed on the actuating member body 7121. The actuating member body 7121 has a first surface 7121a and a second surface 7121b that are interconnected along the axial direction of the developing roller 20. The first surface 7121a extends along the rotation direction of the rotatable member 71, or in other words, the first surface 7121a extends along the circumferential direction of the actuating member body 7121 and along the axial direction of the developing roller 20. The second surface 7121b is formed as the surface of the actuating member body 7121 facing the developing housing 10 / receiving cavity 13.

[0043] In some embodiments, the positions of the actuating member 712, the mating part 7122, and the forced pushing part 7123 are not limited to, for example, Figure 5A and Figure 5B As shown, for example, the mating part 7122 and the forced pushing part 7123 are both directly provided on the main body of the actuating member 7121.

[0044] The mating portion 7122 is used to hold the rotatable member 71 in a stationary position along the axial direction of the developing roller 20. The mating portion 7122 is configured to protrude from the second surface 7121b in a direction away from the rotatable member body 711. The mating portion 7122 includes a first extension 7122a and a second extension 7122b that are interconnected. Along the axial direction of the developing roller 20, the second extension 7122b is further away from the actuating member 74 than the first extension 7122a. Along the rotation direction of the rotatable member 71, the second extension 7122a... The size of 2b is smaller than the size of the first extension 7122a. A notch 7122c is formed between the first extension 7122b and the first extension 7122a. In other words, by providing the notch 7122c, the mating part 7122 is formed in a shape in which the first extension 7122a is larger and the second extension 7122b is smaller in the direction of rotation of the rotatable member 71. In this configuration, the second extension 7122b is more likely to deform and more likely to pass over the first protrusion 7231.

[0045] The forced pushing portion 7123 is for being pushed by the forced pushing member 73. Along the radial direction of the rotatable member 71 / acting member 712, the forced pushing portion 7123 is configured to protrude from the first surface 7121a toward a direction away from the radial center of the rotatable member 71 / acting member 712. The forced pushing portion 7123 has a forced pushing surface 7123a for being pushed by the forced pushing member 73. Figure 6As shown, along the rotation direction of the rotatable member 71 / actuator 712, the size of the mating part 7122 does not exceed the size of the forced push part 7123 / forced push surface 7123a. In other words, when viewed along the rotation axis of the rotatable member 71, at least a portion of the mating part 7122 coincides with the forced push part 7123 in the radial direction of the rotatable member 71. In this way, the forced push force on the forced push surface 7123a can be more fully utilized.

[0046] In some embodiments, the actuating member 712 is further provided with at least one support member 7124, which is configured to protrude from the first surface 7121a toward the radial center away from the rotatable member 71 / actuating member 712. The support member 7124 is connected to the inner wall 711b of the rotatable member body 711. Along the radial direction of the rotatable member 71, at least a portion of the support member 7124 is covered by the inner wall 711b / rotatable member body 71. In this configuration, the pushing force applied by the pushing member 73 can reach the rotatable member body 711, thereby enabling the rotatable member 71 to smoothly transition from a stationary position to a rotatable position, and the counting component 70 can start counting again.

[0047] In some embodiments, the support 7124 is connected to the forced push portion 7123. This arrangement facilitates the transmission of the forced push force and enhances the strength of the rotatable body 711.

[0048] The actuating member 712 is also provided with a mounting portion 7125 for cooperating with the connecting member 72. Through the cooperation between the connecting member 72 and the mounting portion 7125, the rotatable member 71 / actuating member 712 and the connecting member 72 are connected to each other. The mounting portion 7125 is configured as a through hole extending along the axial direction of the developing roller 20, or as a groove opening towards the developing housing 10 / receiving cavity 13 along the axial direction of the developing roller 20, or as a protrusion extending towards the developing housing 10 / receiving cavity 13 along the axial direction of the developing roller 20.

[0049] like Figure 7 As shown, the bottom shell 11 has a side facing away from the receiving cavity 13, and the side faces the drive end cover 50. The connecting member 72 is mounted on the side. The connecting member 72 includes a guide rail 721, a mounting part 722 and a limiting part 723. The mounting part 722 is used to engage with the mounted part 7125 so that the rotatable member 71 can rotate relative to the mounting part 722. The mounting part 722 is configured as a protrusion extending in a direction away from the developing housing 10 / receiving cavity 13, or as a groove with an opening facing away from the developing housing 10 / receiving cavity 13.

[0050] In some embodiments, the connecting member 72 is integrally formed with the developing housing 10 / bottom housing 11 / side panel, or it is formed separately.

[0051] The guide rail 721 is used to guide the rotation of the rotatable part 71 / fitting part 7122 / second extension part 7122b. The guide rail 721 is located on the radially outer side of the mounting part 722. In the axial direction of the developing roller 20, the guide rail 721 includes at least a second protrusion 7232 extending from the developing housing 10 / side toward the direction away from the receiving cavity 13.

[0052] The limiting portion 723 is used to limit the rotation of the rotatable member 71 / fitting portion 7122 / second extension 7122b. The limiting portion 723 includes a first protrusion 7231 and a limiting cavity 7233. The first protrusion 7231 is configured to extend from the developing housing 10 / side toward the direction away from the receiving cavity 13. In the axial direction of the developing roller 20, the size of the first protrusion 7231 is smaller than the size of the second protrusion 7232. Along the circumferential direction of the guide rail 721, the limiting cavity 7233 is formed between the first protrusion 7231 and the second protrusion 7232 and is used to limit the disengagement of the second extension 7122b. The limiting cavity 7233 is formed as a groove recessed toward the developing housing 10 / receiving cavity 13. The first protrusion 7231 is used to limit a portion of the rotatable member 71 / second extension 7122b from disengaging from the limiting cavity 7233 along the circumferential direction of the guide rail 721.

[0053] The limiting part 723 is integrally formed with the guide rail 721. Specifically, the first protrusion 7231 and the second protrusion 7232 are integrally formed.

[0054] When the guide rail 721 is provided with multiple protrusions, the dimensions of the multiple protrusions are different along the axial direction of the developing roller 20.

[0055] like Figure 8 As shown, the push member 73 includes a pressing part 731, a pushing part 732, and a retaining member 733. The pressing part 731 and the pushing part 732 are interconnected. At least a portion of the pressing part 731 is exposed through the drive end cap 50 to allow the pressing part 731 to receive force applied from outside the developing cartridge 100. The pressing part 731 is used to force the pushing part 732 to abut against the forced pushing part 7123 / forced pushing surface 7123a, causing the rotatable member 71 to rotate, thereby causing the teeth 7111 to face the stirring gear 40, and the rotatable member 71 to change from a stationary position to a rotatable position. The retaining member 733 is located between the pressing part 731 and the drive end cap 50, and is used to force the pushing part 732 to disengage from the forced pushing part 7123 / forced pushing surface 7123a. That is, the retaining member 733 is used to keep the pushing member 73 in the following non-pushing position.

[0056] In some embodiments, the retainer 733 is configured as an elastic element.

[0057] In some embodiments, the retainer 733 is configured as an elastic arm.

[0058] The pushing member 73 can switch between a pushing position and a non-pushing position. When the pushing member 73 is in the non-pushing position, the rotatable member 71 is in a rotatable position. When the pushing member 73 moves from the non-pushing position to the pushing position, the pushing member 73 is used to receive a force applied from outside the developing cartridge 100 to force the rotatable member 71 to switch from the rest position to the rotatable position. Specifically, when a force from outside the developing cartridge 100 presses / is applied to the pressing part 731, the pressing part 731 forces the pushing part 732 to switch from the rest position to the rotatable position. The forced push part 7123 / forced push surface 7123a abuts against the forced push part 7123, causing the rotatable part 71 to rotate. The toothed part 7111 is opposite to the stirring gear 40, and the forced push part 73 moves from the non-forced push position to the forced push position. When the external force no longer presses the pressing part 731, under the action of the holding part 733, the pressing part 731 drives the forced push part 732 to move together toward a position away from the forced push part 7123 / forced push surface 7123a, and the forced push part 73 moves from the forced push position to the non-forced push position.

[0059] In some embodiments, the force used to press the pusher 73 can be the user's hand or an external force-applying component.

[0060] In some embodiments, the drive end cover 50 is provided with at least one abutted portion 51, and the pusher 73 is provided with at least one abutting portion 734 for interacting with the abutted portion 51. Through the interaction between the abutted portion 51 and the abutting portion 734, the pusher 73 can be prevented from detaching from the drive end cover 50 under the action of the retainer 733.

[0061] When the developing cartridge 100 is initially installed into the imaging device, the pushing member 73 is in the non-pushing position. The driving force receiving member 30 receives the driving force from the imaging device and transmits the driving force to the stirring gear 40. The stirring gear 40 rotates, and at the same time, the stirring gear 40 meshes with the teeth 7111 of the rotatable member 71, causing the rotatable member 71 to rotate. During the rotation of the rotatable member 71, the mating part 7122 / second extension 7122b moves along the guide rail 721, thereby realizing the counting. Finally, the second extension 7122b enters the limiting cavity 7233 and is limited by the first protrusion 7231. At this time, the missing tooth part 7112 of the rotatable member 71 is opposite to the stirring gear 40, the rotatable member 71 stops rotating, and the counting component 70 completes the counting.

[0062] When the developing cartridge 100 needs to be counted again, the user removes the developing cartridge 100 from the imaging device and presses the pressing part 731 of the pushing member 73. The pressing part 731 forces the pushing part 732 to abut against the forced pushing part 7123 / forced pushing surface 7123a, causing the rotatable member 71 to rotate. The pushing member 73 moves from the non-pushing position to the pushing position, and the teeth 7111 face the stirring gear 40 to receive the driving force. The rotatable member 71 changes from the stationary position to the rotatable position. When the developing cartridge 100 is reinstalled into the imaging device, the counting component 70 can count again. When the user no longer presses the pressing part 731, the pushing member 73 moves from the pushing position to the non-pushing position under the action of the holding member 733.

[0063] During the process of the rotatable member 71 changing from a stationary position to a rotatable position, the second extension 7122b can pass over the first protrusion 7231 and leave the restrictive cavity 7233 by the force applied to the forced push portion 7123 by the force applied by the forced push member 73.

[0064] [Beneficial Effects]

[0065] Compared with the prior art, the developing cartridge 100 provided by this utility model has the following beneficial effects:

[0066] In the first aspect, in the mating part 7122 of the actuating member 712, along the rotation direction of the rotatable member 71, the size of the second extension 7122b is smaller than the size of the first extension 7122a. With this arrangement, when the pushing member 73 forces the rotatable member 71 to rotate, the second extension 7122b is more likely to deform, and thus more likely to pass over the first protrusion 7231 and disengage from the restricting cavity 7233.

[0067] Secondly, the guide rail 721 is used to guide the rotation of the mating part 7122 / second extension 7122b. A limiting cavity 7233 for limiting / accommodating the second extension 7122b is formed between the second protrusion 7232 of the guide rail 721 and the first protrusion 7231 of the limiting part 723. The limiting cavity 7233 is formed as a groove recessed toward the developing housing 10 / accommodating cavity 13. The first protrusion 7231 is used to limit the second extension 7122b from disengaging from the limiting cavity 7233. With this arrangement, when the rotatable member 71 is in a stationary position, the first protrusion 7231 can limit the second extension 7122b in the limiting cavity 7233, preventing the second extension 7122b from disengaging, thereby preventing the counting component 70 from counting again and affecting the detection result of the imaging device.

[0068] Thirdly, along the rotation direction of the rotatable member 71 / acting member 712, the size of the mating part 7122 does not exceed the size of the forced pushing part 7123 / forced pushing surface 7123a, so that the forced pushing force on the forced pushing surface 7123a can be more fully utilized.

[0069] Fourthly, the first protrusion 7231 and the second protrusion 7232 are integrally formed. With this configuration, the positions of the first protrusion 7231 and the limiting cavity 7233 will not change. When the second extension 7122b is located in the limiting cavity 7233, the first protrusion 7231 can better limit the second extension 7122b and prevent the second extension 7122b from deviating and affecting the counting component 70.

[0070] Fifthly, the counting component 70 is also provided with a pusher 73. When the developing cartridge 100 needs to count again, the user can press the pressing part 731 of the pusher 73 to force the rotatable part 71 to change from a stationary position to a rotatable position, and the counting component 70 can start counting again. The force that forces the rotatable part 71 to rotate again comes from the user's hand. This operation method is not only simple and quick, but also does not require other complex components to cooperate, which simplifies the structure of the developing cartridge 100.

[0071] Sixthly, in conjunction with the first and fifth aspects, when the counting component 70 needs to recount, the rotatable part 71 needs to be switched from the stationary position to the rotatable position, that is, the counting component 70 needs to be reset. In this utility model, the counting component 70 can be quickly reset by means of the pusher 73 and the second extension 7122b, without the need to disassemble the drive end cover 50. This operation method is simple and convenient, reducing the difficulty of operation for users.

Claims

1. A developing cartridge, detachably mounted to an imaging device equipped with a detection element, the developing cartridge comprising: The developer housing has a cavity for containing the developer. The developing roller, rotatably mounted in the developing housing, is used to carry the developing agent; A counting component is used to interact with the detection element, enabling the imaging device to obtain parameter information of the developing cartridge; Its features are, The counting component includes a toggle member, a rotatable member, and a pusher member. The toggle member is used to aggle the detection member. The toggle member and the rotatable member are connected to each other. The rotatable member can switch between a stationary position and a rotatable position. When the rotatable part receives a driving force from the imaging device and rotates, and the actuating part actuates the detection part, the rotatable part is in a rotatable position. When the rotatable part does not rotate and the actuating part does not actuate the detection part, the rotatable part is in a stationary position. The pusher can switch between a pusher position and a non-pusher position. When the pusher is in the non-pusher position, the rotatable part is in the rotatable position. When the pusher moves from the non-pusher position to the pusher position, the pusher is used to receive a force applied from outside the developing cartridge to push the rotatable part, and the rotatable part switches from the stationary position to the rotatable position.

2. The developing cartridge according to claim 1, characterized in that, The rotatable component includes a rotatable component body and an actuating component disposed on the rotatable component body. The actuating component includes a mating portion for keeping the rotatable component in a stationary position and at least one forced pushing portion for being forced by the forced pushing component. When viewed along the rotation axis of the rotatable component, at least a portion of the mating portion coincides with the forced pushing portion in the radial direction of the rotatable component.

3. The developing cartridge according to claim 1, characterized in that, The rotatable component includes a mating portion for holding the rotatable component in a stationary position. The mating portion includes a first extension and a second extension that are connected to each other. Along the axial direction of the developing roller, the second extension is further away from the actuating component than the first extension. Along the rotation direction of the rotatable component, the size of the second extension is smaller than the size of the first extension.

4. The developing cartridge according to claim 1, characterized in that, The rotatable component includes a mating portion for holding the rotatable component in a stationary position. The mating portion includes a first extension and a second extension that are connected to each other. Along the axial direction of the developing roller, the second extension is further away from the actuating component than the first extension, and a notch is formed between the first extension and the first extension.

5. The developing cartridge according to claim 1, characterized in that, The rotatable component includes a rotatable component body and an actuating component disposed on the rotatable component body. The actuating component includes a mating part for keeping the rotatable component in a stationary position and at least one forced pushing part for being forced by the forced pushing component. Along the rotation direction of the rotatable component / actuating component, the size of the mating part does not exceed the size of the forced pushing part.

6. The developing cartridge according to claim 1, characterized in that, The counting assembly further includes a connecting member, which includes a guide rail for guiding the rotation of the rotatable component and a limiting portion for restricting the rotation of the rotatable component. The guide rail includes at least a second protrusion, and the limiting portion includes a first protrusion and a limiting cavity. In the axial direction of the developing roller, both the first and second protrusions are configured to extend from the developing housing toward a direction away from the receiving cavity. In the circumferential direction of the guide rail, the limiting cavity is formed as a groove between the first and second protrusions to prevent a portion of the rotatable component from disengaging.

7. The developing cartridge according to claim 6, characterized in that, In the axial direction of the developing roller, the size of the first protrusion is smaller than the size of the second protrusion.

8. The developing cartridge according to claim 2 or 5, characterized in that, The rotatable part body is provided with a toothed part and a toothless part. Along the rotation direction of the rotatable part, the toothed part and the toothless part are arranged adjacent to each other. The toothed part is used to receive driving force, while the toothless part cannot receive driving force. The developing chamber is also provided with a stirring component and a stirring gear. The stirring component is used to stir the developer in the containing cavity, and the stirring gear is used to receive the driving force from the imaging device to drive the stirring component to rotate. The stirring gear is also used to transmit the driving force to the rotatable component. When the toothed part is opposite to the stirring gear, the rotatable part is in a rotatable position; when the missing toothed part is opposite to the stirring gear, the rotatable part is in a stationary position.

9. The developing cartridge according to claim 8, characterized in that, The pusher includes a pressing part, a pushing part, and a retaining part. The pressing part and the pushing part are connected to each other. The pressing part is used to receive the force applied from outside the developing cartridge, forcing the pushing part to push the rotatable part, so that the rotatable part changes from a stationary position to a rotatable position. The retaining part is used to keep the pushing part in a non-pushing position.

10. The developing cartridge according to claim 9, characterized in that, The developing cartridge also includes a drive end cover that is coupled to the developing housing along the axial direction of the developing roller, and at least a portion of the pressing portion is exposed through the drive end cover.

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