Developing cartridge

Abstract

The utility model discloses a developing box, can be detachably installed to imaging equipment with drum box. The drum box includes the casing, the forced push surface and the conductive part relative to the casing movement. The developing box includes the driving force receiving member of being located at the drive end, the developing member of rotating about the first direction extension axis, the supply member for conveying the developing agent, the powder outlet knife for adjusting the developing agent layer thickness and the developing support of being located at the non -drive end, is equipped with the forced push part on it, and when installation, the forced push surface of drum box abuts. The developing box is equipped with the electric power transmission spare still, is used for with the electric connection of conductive part, and at least one power supply of developing member, supply member or powder outlet knife. The position of electric power transmission spare receiving power and the abutment position of forced push part and forced push surface do not overlap. The design not only reduces the contact distance of forced push part and forced push assembly in the installation or dismounting process, reduces both wear and tear, can also avoid the damage of conductive part because of friction.

Description

[0001] This divisional application is a divisional application of Chinese utility model patent application filed on December 11, 2024, with application number 202423065534.0 and entitled "Developer Box". Technical Field

[0002] This utility model relates to the field of electrophotographic imaging technology, and in particular to a developing cartridge for electrophotographic imaging equipment. Background Technology

[0003] In electrophotographic imaging equipment, the developing cartridge works in conjunction with the drum cartridge and can be removed and replaced together from the equipment. To achieve the developing function, the developing cartridge needs to receive driving force and electricity from the imaging equipment. The electricity is generally transmitted to the power transmission components of the developing cartridge through conductive structures (such as internal and external conductive parts) on the drum cartridge housing, which power components such as the developing roller, toner delivery roller, or toner exit blade. Simultaneously, the drum cartridge often has a pushing surface that pushes the developing cartridge closer to the photosensitive drum during installation, ensuring accurate developing gap.

[0004] In existing technologies, the power transmission components (such as conductive terminals or adapters) of the developing cartridge and the forced push part are often located in the same area. This causes overlapping friction between the electrical contact points and the mechanical forced push part during the insertion or removal of the developing cartridge from the drum. On the one hand, the forced push part needs to slide a long distance along the pushing surface, resulting in increased surface wear on both, affecting positioning accuracy and service life. On the other hand, the conductive components (such as the internal conductive parts or movable conductive terminals on the drum) are also easily damaged by repeated scratching, leading to poor contact, increased resistance, or even power failure, which in turn causes image defects or equipment malfunctions.

[0005] Although some drum cartridges are equipped with internal and external conductive parts to connect to the power output terminal of the equipment, their internal conductive parts are often flush with or recessed with the movable conductive parts, making it difficult for the power receiving structure of the developing cartridge to make stable contact, further exacerbating the unreliability of the electrical connection.

[0006] Therefore, there is an urgent need for a developer cartridge structure that can effectively separate the power receiving position from the mechanical pushing position in space, thereby reducing frictional interference during installation / disassembly, reducing wear on key components, and improving electrical connection stability and overall reliability. Utility Model Content

[0007] In view of the above, this utility model provides a developing cartridge employing the following technical solution to solve the aforementioned technical problems. The specific solution is as follows:

[0008] A developing cartridge, detachably mounted to an imaging device together with a drum cartridge, the drum cartridge including a housing, a pushing surface, and a conductive element movable relative to the housing, the pushing surface for pushing the developing cartridge, characterized in that the developing cartridge includes: a driving force receiving element disposed at the driving end of the developing cartridge; a developing element receiving driving force from the driving force receiving element, the developing element rotating about a rotation axis extending in a first direction; a supply element for supplying developer to the developing element; a powder ejector for adjusting the developer layer thickness on the outer surface of the developing element; a developing support disposed at the non-driving end of the developing cartridge, the non-driving end being opposite to the driving end in the first direction, the developing support having a forced pushing portion that abuts against the pushing surface when the developing cartridge is mounted to the drum cartridge; and a power transmission element electrically connected to the conductive element to receive power, and the power transmission element being electrically connected to at least one of the developing element, the supply element, and the powder ejector; wherein the position of the power transmission element for receiving power is different from the position where the forced pushing portion abuts against the pushing surface.

[0009] In some embodiments, the developing element and the supply element are supported by a developing bracket made of a conductive material.

[0010] In some embodiments, the developing bracket is characterized by having a second power transmission section for electrical connection with a supply component.

[0011] In some embodiments, the housing has a left side wall and a right side wall spaced apart from each other, and a developer cartridge receiving portion located between the left side wall and the right side wall, the developer cartridge receiving portion being used to receive a developer cartridge, the right side wall being provided with a power input element, the power input element including an inner conductive portion located on the side facing the developer cartridge receiving portion, and power being transmitted to a power transmission element in sequence through the inner conductive portion and the conductive element.

[0012] A developing cartridge, detachably mounted to an imaging device together with a drum cartridge, the imaging device being provided with a power output component, the drum cartridge including a pushing surface, a housing, and a conductive element movable relative to the housing, the pushing surface for pushing the developing cartridge, the housing having a left side wall and a right side wall spaced apart from each other, and a developing cartridge receiving portion located between the left side wall and the right side wall, the developing cartridge receiving portion for accommodating the developing cartridge, the right side wall having an inner conductive portion and an outer conductive portion, the inner conductive portion being located on the side of the right side wall facing the developing cartridge receiving portion, and the outer conductive portion being located on the side of the right side wall facing away from the developing cartridge receiving portion, characterized in that the inner conductive portion is in the first direction... The developing cartridge includes: a driving force receiving member disposed at the driving end of the developing cartridge; a developing member that receives driving force from the driving force receiving member and rotates about a rotation axis extending in a first direction; a forced pusher that abuts against a forced pusher surface when the developing cartridge is installed in the drum cartridge, the forced pusher being disposed at the non-driving end of the developing cartridge, the non-driving end being opposite to the driving end in the first direction; and an adapter that receives power by contacting a power output member, an external conductive member, or the extended portion, wherein the position of the adapter for receiving power is different from the position where the forced pusher abuts against the forced pusher surface.

[0013] In some embodiments, the developing cartridge includes a developing bracket and a developing housing for containing developer, the developing bracket being connected to the developing housing, and the adapter being supported by the developing bracket or the developing housing.

[0014] In some embodiments, a portion of the adapter is configured to reciprocate along a first direction.

[0015] In some embodiments, the developing cartridge includes a powder ejector for adjusting the thickness of the developer layer on the outer surface of the developing element and a third power transmission unit for electrically connecting to the powder ejector, the third power transmission unit being disposed on an adapter.

[0016] In some embodiments, the third power transmission unit is characterized as part of a developing bracket or adapter.

[0017] In some embodiments, the third power transmission unit is a conductive component independent of the developing bracket and the adapter.

[0018] The beneficial effects of this utility model are as follows: By setting the position of the power transmission component receiving power to not overlap with the contact position of the forced push part and the forced push surface, the contact distance between the forced push part and the forced push component during installation or disassembly can be reduced, thus reducing wear on both and preventing damage to the conductive components due to friction. Attached Figure Description

[0019] Figure 1AThis is a schematic diagram of the developing cartridge and drum cartridge after separation, which are related to this utility model.

[0020] Figure 1B This is a perspective view of the drum box involved in this utility model.

[0021] Figure 2 This is a perspective view of the conductive end of the developing cartridge according to Embodiment 1 of this utility model.

[0022] Figure 3 This is a perspective view of the developing cartridge and the conductive components in the drum cartridge in the first embodiment of this utility model when they are in contact.

[0023] Figure 4 This is a perspective view of the developing cartridge and the conductive components in the drum cartridge in embodiment two of this utility model when they are in contact.

[0024] Figure 5 This is a perspective view of the developing cartridge and the conductive components in the drum cartridge in the third embodiment of this utility model when they are in contact.

[0025] Figure 6 This is a perspective view of the developing cartridge and the conductive components in the drum cartridge in the fourth embodiment of this utility model when they are in contact.

[0026] Figure 7A This is a perspective view of the power transmission component, developing bracket, and developing housing in the developing cartridge according to Embodiment 5 of this utility model after separation.

[0027] Figure 7B This is a perspective view of the developing cartridge and the conductive components in the drum cartridge in embodiment five of this utility model when they are in contact. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0029] [Overall structure of the developing chamber]

[0030] like Figure 1A As shown, the developing cartridge 300 can first mate with the drum cartridge 200, and then the mating body of the developing cartridge 300 and the drum cartridge 200 can be detachably installed into the imaging device. Alternatively, the developing cartridge 300 can be directly detachably installed into the imaging device, and the drum cartridge 200 can be pre-installed into the imaging device. Regardless of how the developing cartridge 300 is installed into the imaging device, as long as the drum cartridge 200 has the structure described below, the developing cartridge 300 involved in this utility model is applicable.

[0031] The imaging device is provided with a guide rail 91 for guiding the developing cartridge 300 and / or the combination of the developing cartridge 300 and the drum cassette 200, and a drive force output member 92 for outputting drive force. When the developing cartridge 300 is developed in the imaging device, the drive force output member 92 outputs drive force to the developing cartridge 300. Furthermore, the imaging device is also provided with a device-side pushing member 93 for pushing the drive force output member 92 toward the developing cartridge 300. When the developing cartridge 300, which is provided with the power transmission member 39 according to the following embodiments, is installed toward the imaging device or removed from the imaging device, the power transmission member 39 will not interfere with the guide rail 91.

[0032] The developing cartridge 300 includes a developing housing 3, a rotating member rotatably disposed within the developing housing 3, and a driving force receiving member 32. The developing housing 3 is used to contain developer and supply developer to the photosensitive element 21. The driving force receiving member 32 is used to receive driving force from a driving force output member 92 in the imaging device to drive the rotating member to rotate. The rotating member is a developing element 31 for carrying developer and a supply member 3b for delivering developer to the developing element 31 (e.g., a developing element 31 for carrying developer and a supply member 3b for delivering developer to the developing element 31). Figure 5 At least one of the following (shown), the developing element 31 receives a driving force from the driving force receiving element 32 and rotates about the rotation axis L.

[0033] Here, the direction in which the rotation axis L extends is defined as the first direction, the direction intersecting the first direction is defined as the second direction, and the direction intersecting both the first and second directions is defined as the third direction. Along the first direction, the end where the driving force receiver 32 is located is the driving end F / left. The end without the driving force receiver 32 along the first direction is the non-driving end / conductive end E / right. In other words, the driving end F / left is opposite to the driving end / conductive end E / right in the first direction. Along the second direction, the developing element 31 is located at one end of the developing cartridge 300, and the developing element 31 is exposed towards the third direction. Specifically, the developing cartridge 300 can be installed along the second direction with the developing element 31 in a front-facing position. The direction opposite to the front along the second direction is the rear. The developing element 31 is exposed upwards towards the third direction, and the direction opposite to the upwards along the third direction is the bottom.

[0034] Continue as Figure 1AAs shown, the developing cartridge 300 also includes a drive end cover 34 and a developing bracket 38 connected to the developing housing 3. Along the first direction, the drive end cover 34 and the developing bracket 38 are located at both ends of the developing housing 3. The drive end cover 34 is located at the drive end F, and the developing bracket 38 is located at the non-drive end E. The driving force receiving member 32 is exposed from the drive end cover 34. Furthermore, the developing cartridge 300 also includes a chip assembly 36. When the developing cartridge 300 is installed in an imaging device, the chip assembly 36 is used to establish a communication connection with the imaging device. It is feasible that the position of the chip assembly 36 in the developing cartridge 300 is not limited, as long as the chip assembly 36 can establish a communication connection with the imaging device.

[0035] Furthermore, the developing cartridge 300 also includes a powder dispensing blade 3a, which is fixedly mounted on the developing housing 3 and is used to adjust the thickness of the developer layer on the outer surface of the developing element 31. Generally, at least a portion of the powder dispensing blade 3a is made of metal to enhance its strength.

[0036] [The overall structure of the drum case]

[0037] The drum cartridge 200 includes a housing 2, a photosensitive element 21, and a push assembly 23. The photosensitive element 21 is rotatably disposed in the housing 2. The housing 2 also forms a developing cartridge receiving portion 22 for accommodating a developing cartridge 300. The push assembly 23 is used to push the developing cartridge 300 toward the photosensitive element 21. The push assembly 23 includes a left push assembly 23a disposed at the driving end and a right push assembly 23b disposed at the non-driving end. Along a first direction, the housing 2 has a left side wall 2a and a right side wall 2b disposed at a relative interval. The developing cartridge receiving portion 22 is located on the left side wall. Between the left side wall 2a and the right side wall 2b, the pusher assembly 23 is also located between the left side wall 2a and the right side wall 2b. Therefore, the pusher assembly 23 is located in the developing cartridge receiving portion 22. The left pusher assembly 23a is located close to the left side wall 2a, and the right pusher assembly 23b is located close to the right side wall 2b. In other words, along the first direction, the left pusher assembly 23a is closer to the left side wall 2a than the right pusher assembly 23b, and the right pusher assembly 23b is closer to the right side wall 2b than the left pusher assembly 23a. Both the left side wall 2a and the right side wall 2b are part of the developing cartridge receiving portion 22.

[0038] In this invention, the right side wall 2b is also provided with a power input component 26 for electrical connection with the power output component 94 in the imaging device. The right push assembly 23b includes a right push component (hereinafter referred to as "push component") 23b1, an elastic component (not shown), and a conductive component 23b3. Under the elastic force of the elastic component, both the conductive component 23b3 and the push component 23b1 can move relative to the housing 2. That is, the push component 23b1 can move relative to the conductive component 23b3. Figure 1BAs shown, at least a portion of the conductive element 23b3 is located within the pusher, thus the size of the right pusher assembly 23b can be controlled, and the conductive element 23b3 can also serve as a guide when the pusher 23b1 moves, ensuring that the movement trajectory of the pusher 23b1 does not deviate; along the second direction, the conductive element 23b3 is exposed forward from the pusher 23b1, and the pusher 23b1 also has a forward-facing pusher surface 23b11, which is used to push the developing cassette 300.

[0039] Along the first direction, the power input element 26 passes through the right side wall 2b, such as Figure 1B As shown, the power input component 26 includes an outer conductive portion 261 located on the outer side of the right side wall 2b (the side facing away from the developing cartridge 22) and an inner conductive portion 262 located on the inner side of the right side wall 2b (the side facing the developing cartridge 22). The outer conductive portion 261 and the inner conductive portion 262 are electrically connected, and the outer conductive portion 261 is used to be electrically connected to the power output component 94, while the inner conductive portion 262 is used to supply power to the developing cartridge 300. Along the second direction, the power input component 26 extends beyond the conductive component 23b3. Specifically, a portion of the power input component 26 is located in front of the conductive component 23b3. When viewed along the first direction, at least the inner conductive portion 262 has an extension portion 263 that extends beyond the conductive component 23b3.

[0040] In some embodiments, the conductive element 23b3 also directly contacts the inner conductive part 262 to receive power. Finally, the power output by the power output element 94 is transmitted to the developing cartridge 300 in sequence through the outer conductive part 261, the inner conductive part 262 and the conductive element 23b3. At the same time, the developing cartridge 300 is also pushed by the pusher 23b1. In this way, the right pusher assembly 23b can both supply power to the developing cartridge 300 and push the developing cartridge 300 closer to the photosensitive element 21.

[0041] In some embodiments, the conductive element 23b3 and the inner conductive part 262 may also be in indirect contact, for example, by providing a conductor between them.

[0042] In some embodiments of this utility model, the developing cartridge 300 is provided with a power transmission component 39 that does not contact the conductive component 23b3. The power transmission component 39 receives power by contacting the power input component 26. This not only simplifies the power transmission path, but also ensures that the developing cartridge 300 can receive power regardless of whether the power transmission component 39 is in contact with the conductive component 23b3.

[0043] [Power transmission components]

[0044] (Example 1)

[0045] like Figure 2As shown, the power transmission component 39 includes a developing stand 38 and an adapter 30. The developing component 31 and the supply component 3b are supported by the developing stand 38. The adapter 30 is made of conductive material and is disposed on the developing stand 38. The adapter 30 is used to receive power by contacting the power input component 26. The power transmission component 39 is used to electrically connect with at least one of the developing component 31, the supply component 3b, and the powder exit blade 3a.

[0046] In some embodiments, the developing bracket 38 is made of a conductive material. In such cases, the developing bracket 38 can directly supply power to at least one of the developing element 31 and the supply element 3b. When the developing cartridge 300 is installed into the drum cartridge 200, to more clearly observe the interaction between the power transmission element 39 and the power input element 26... Figure 3 The diagram only shows a portion of the structure of the non-drive end of the developing cartridge 300, the power input component 26 in the drum cassette 200, and the power output component 94 in the imaging device, as shown below. Figure 3 As shown, the power output component 94 abuts against the outer conductive part 261, and the adapter 30 abuts against the inner conductive part 262 / extension part 263. In this way, the power output by the power output component 94 can be transmitted to at least one of the developing component 31 and the supply component 3b through the outer conductive part 261, the inner conductive part 262, the adapter 30 and the developing bracket 38.

[0047] Overall, the adapter 30 is supported by the developing bracket 38, and the adapter 30 is used to contact components outside the power transmission member 39 to receive power. Therefore, at least a part of the adapter 30 can be regarded as the power receiving part 393 of the power transmission member 39, and the developing bracket 38 can be regarded as the positioning part 390 of the adapter 30. That is, the adapter 30 is positioned by the positioning part 390. At the same time, the developing bracket 38 is also provided with at least one of a first power transmission part for electrical connection with the developing member 31 and a second power transmission part for electrical connection with the supply member 3b.

[0048] In some embodiments, the developing stand 38 is made of a non-conductive material. In such cases, the adapter 30 can be directly electrically connected to the developing member 31 and / or the adapter 30 can be directly electrically connected to the supply member 3b, but the adapter 30 is still supported and positioned by the developing stand 38, and the first power transmission part and / or the second power transmission part will be disposed on the adapter 30.

[0049] In some embodiments, the adapter 30 may not be supported by the developing bracket 38, but may be supported and positioned by the developing housing 3. In this case, a portion of the developing housing 3 will be regarded as the positioning part 390.

[0050] Continue as Figure 3As shown, the developing bracket 38 is also provided with a forced pushing part 381. When the developing cartridge 300 is installed into the drum cassette 200, the forced pushing part 381 abuts against the forced pushing surface 23b11, and the developing element 31 moves closer to the photosensitive element 21. In practice, the forced pushing of the developing cartridge 300 can be achieved regardless of whether the forced pushing part 381 abuts against the conductive element 23b3. Preferably, the forced pushing part 381 does not contact the conductive element 23b3, that is, the position where the power transmission element 39 / transfer element 30 contacts the power input element 26 to receive power is different from the position where the forced pushing part 381 contacts the forced pushing surface 23b11. The contact position, or in other words, the position for receiving power, does not overlap with the contact position. This not only reduces the contact distance between the forced push part 381 and the right forced push assembly 23b during the installation of the developer cartridge 300 toward or from the drum cartridge 200, thereby reducing wear on the forced push part 381 and the right forced push assembly 23b, but also prevents wear on the conductive component 23b3. This ensures that the user can install such a developer cartridge in the drum cartridge 200, where the forced push part of the developer cartridge can contact the conductive component 23b3, thus providing the user with greater choice.

[0051] In some embodiments, the forced pusher 381 may also be directly disposed on the developing housing 31.

[0052] In some embodiments, the adapter 30 is an elastic member mounted on the developing bracket 38 or the developing housing 3. During the installation of the developing cartridge 300, the adapter 30 abuts against the inner conductive part 262 and undergoes elastic deformation. Before the developing cartridge 300 is removed, the adapter 30 will maintain good contact with the inner conductive part 262. Preferably, the adapter 30 is configured as a torsion spring.

[0053] (Example 2)

[0054] The structures and components that are the same as those in Embodiment 1 will not be described again, such as... Figure 4 As shown, the power transmission component 39 in this embodiment also includes a third power transmission unit 394 for electrically connecting with the powder discharge blade 3a, so that the powder discharge blade 3a can also be powered.

[0055] The third power transmission unit 394 can be a conductive component independent of the developing bracket 38 and the adapter 30, or it can be formed as part of the developing bracket 38 or the adapter 30, as long as it can supply power to the powder discharge blade 3a.

[0056] (Example 3)

[0057] The structures and components that are the same as those in Embodiment 1 will not be described again, such as... Figure 5As shown, in this embodiment, the adapter 30 is a conductive sheet mounted on the developing bracket 38. When the developing cartridge 300 is installed on the drum cassette 200, the adapter 30 will contact the external conductive part 261. At this time, the power output by the power output unit 94 can be transmitted to the developing cartridge 300 through the external conductive part 261 and the adapter 30. Alternatively, the adapter 30 can directly contact the power output unit 94. In this case, the power output by the power output unit 94 can be transmitted to the developing cartridge 300 through the adapter 30.

[0058] The position where the power transmission component 39 / transfer component 30 contacts the power output component 94 to receive power is different from the position where the forced push part 381 abuts against the forced push surface 23b11, or in other words, the position for receiving power and the position for abutting do not overlap.

[0059] Similarly, in some embodiments, the developing stand 38 is made of a conductive material, and the power received by the adapter 30 is transmitted through the developing stand 38 to at least one of the developing element 31, the supply element 3b, and the powder exit blade 3a. In this case, at least a portion of the adapter 30 can be regarded as the power receiving part 393 of the power transmission element 39, and the developing stand 38 can be regarded as the positioning part 390 of the adapter 30. At the same time, the developing stand 38 is also provided with at least one of a first power transmission part 391 for electrical connection with the developing element 31 and a second power transmission part 392 for electrical connection with the supply element 3b.

[0060] In some embodiments, the developing stand 38 is made of a non-conductive material. In such cases, the adapter 30 can be directly electrically connected to at least one of the developing unit 31, the supply unit 3b, and the powder exit blade 3a. However, the adapter 30 will be supported by the developing stand 38 or the developing housing 3, and a first power transmission unit 391, a second power transmission unit 392, and a third power transmission unit 394 will be provided on the adapter 30.

[0061] (Example 4)

[0062] In this embodiment, the developing bracket 38 is made of conductive material, and the adapter 30 is formed as part of the developing bracket 38; as Figure 6 As shown, when the developing cartridge 300 is installed into the drum cartridge 200, the developing bracket 38 will directly contact the external conductive part 261. The power output from the power output unit 94 can be transmitted through the external conductive part 261 to at least one of the developing unit 31, the supply unit 3b, and the powder exiting blade 3a. Alternatively, the developing bracket 38 can directly contact the power output unit 94. In this case, the power output from the power output unit 94 can be transmitted through the developing bracket 38 to at least one of the developing unit 31, the supply unit 3b, and the powder exiting blade 3a.

[0063] The position where the power transmission component 39 / transfer component 30 contacts the power output component 94 to receive power is different from the position where the forced push part 381 abuts against the forced push surface 23b11, or in other words, the position for receiving power and the position for abutting do not overlap.

[0064] In this embodiment, the power transmission component 39 is simplified to only the developing bracket 38. Therefore, a part of the developing bracket 38 can be regarded as the adapter 30 / power receiving part 393, while another part of the developing bracket 38 can be regarded as the positioning part 390.

[0065] (Example 5)

[0066] In this embodiment, the adapter 30 includes a separately formed adapter piece 301, a retainer 302, and a contact piece 303. The contact piece 303 is used to receive power by contacting the power input piece 26. The adapter piece 301 is used to transmit power by contacting at least one of the developing piece 31, the supply piece 3b, and the powder discharge blade 3a. The retainer 302 is used to hold the adapter piece 301 and the contact piece 303 in an electrically connected state. Preferably, the retainer 302 is configured as an elastic member. Therefore, the contact piece 303 can be regarded as the power receiving part 393 in the power transmission piece 39. The adapter piece 301 is used to form at least one of the first power transmission part 391, the second power transmission part 392, and the third power transmission part 394 in the power transmission piece 39. The developing bracket 38 can be regarded as the positioning part 390 in the power transmission piece 39. At this time, the adapter 30 is supported by the developing bracket 38.

[0067] In some embodiments, the adapter 30 may also be supported by the developing housing 3, in which case a portion of the developing housing 3 will be regarded as the positioning part 390.

[0068] In some embodiments, the developing bracket 38 may also be made of a conductive material, and at least one of the developing bracket 38 and the adapter piece 301 may form at least one of a first power transmission part 391, a second power transmission part 392, and a third power transmission part 394.

[0069] In some embodiments, when the developing bracket 38 is made of a conductive material, the adapter 301 can be omitted, and the retainer 302 directly abuts against the developing bracket 38. In this case, the developing bracket 38 will form at least one of a first power transmission section 391, a second power transmission section 392, and a third power transmission section 394.

[0070] like Figure 7A As shown, the developing bracket 38 or developing housing 3 is also provided with a receiving cavity 382, ​​the adapter 30 can be received by the receiving cavity 382, ​​the contact 303 is confined within the receiving cavity 382, ​​and the retaining member 302 is preferably an elastic member, such as... Figure 7BAs shown, when the developing cartridge 300 is installed into the drum cassette 200, the contact 303 abuts against the inner conductive part 262. Along the first direction, the contact 303 retracts by overcoming the elastic force of the retaining part 302 and moving towards the developing housing 3. The retaining part 302 undergoes elastic deformation, and the contact 303 maintains stable contact with the inner conductive part 262. The power output by the power output unit 94 can be transmitted to the developing cartridge 300 through the outer conductive part 261, the inner conductive part 262, the contact 303, and the retaining part 302.

[0071] When the developing cartridge 300 is removed from the drum cassette 200, the contact 303 no longer abuts against the inner conductive part 262, the retaining member 302 releases its elastic force, and the contact 303 is pushed out in the direction away from the developing housing 3 along the first direction until the contact 303 is restricted by the limiting member provided inside or outside the receiving cavity 382. It can be seen that the contact 303 in this embodiment can reciprocate along the first direction, or in other words, a part of the power transmission member 39 / transfer member 30 can reciprocate along the first direction.

[0072] In this embodiment, the position where the power transmission component 39 / transfer component 30 contacts the power input component 26 to receive power is different from the position where the forced push part 381 abuts against the forced push surface 23b11. In other words, the position for receiving power and the position for abutting do not overlap.

[0073] [Beneficial Effects]

[0074] As described above, the developing cartridge 300 of this utility model is provided with a power transmission component 39. When the developing cartridge 300 is installed in the drum box 200, the power transmission component 39 directly contacts the power input component 26 to receive power. At the same time, the forced push part 381 also abuts against the right forced push component 23b / forced push surface 23b11 in the drum box 200. Therefore, the developing element 31 is forced towards the photosensitive element 21, and the power transmission component 39 can stably receive power. The power transmission path is shortened. Regardless of whether the forced push part 381 contacts the conductive element 23b3 in the right forced push component 23b, the forced push of the developing cartridge 300 can be realized.

[0075] When the forced push part 381 is not in contact with the conductive element 23b3, the conductive element 23b3 will not be worn. Therefore, even if the user replaces the developing cartridge with one that can contact the conductive element 23b3, the conductivity of the conductive element 23b3 will not decrease. Furthermore, even if the power transmission element 39 in the developing cartridge 300 is worn, the user can detect and replace it in time.

[0076] When the forced push part 381 comes into contact with the conductive part 23b3, the power transmission part 39 can still receive power directly from the power input part 26, and the power transmission part 39 and the forced push part 381 can also serve as backups for each other to prevent one of them from being unable to receive power stably; furthermore, even if the power transmission part 39 in the developing cartridge 300 is worn, the user can detect and replace it in time.

Claims

1. A developing cartridge, detachably mounted to an imaging device together with a drum cartridge, the drum cartridge comprising a housing, a pushing surface, and a conductive element movable relative to the housing, the pushing surface being used to push the developing cartridge, characterized in that, The developing cartridge includes: A driving force receiver is disposed at the driving end of the developing cartridge; The developing element receives a driving force from the driving force receiving element and rotates about a rotation axis extending in a first direction. A supply component for conveying developer to the developing component; A powder discharge blade is used to adjust the thickness of the developer layer on the outer surface of the developing element; A developing bracket is disposed at the non-driving end of the developing cartridge, the non-driving end being opposite to the driving end in a first direction. The developing bracket has a forced pushing portion, which abuts against the forced pushing surface when the developing cartridge is installed into the drum cartridge. A power transmission element is electrically connected to the conductive element to receive power, and the power transmission element is used to be electrically connected to at least one of the developing element, the supply element, and the powder exiting blade; The position where the power transmission component receives power is different from the position where the forced push part abuts against the forced push surface.

2. The developing cartridge according to claim 1, characterized in that, The developing element and the supply element are supported by a developing bracket, which is made of a conductive material.

3. The developing cartridge according to claim 2, characterized in that, The developing bracket is provided with a second power transmission section for electrical connection with the supply component.

4. The developing cartridge according to claim 1, characterized in that, The housing has a left side wall and a right side wall that are spaced apart from each other, and a developing cartridge receiving portion located between the left side wall and the right side wall. The developing cartridge receiving portion is used to receive the developing cartridge. The right side wall is provided with a power input component, which includes an inner conductive portion located on the side facing the developing cartridge receiving portion. Power is transmitted to a power transmission component in sequence through the inner conductive portion and the conductive component.

5. A developing cartridge, detachably mounted to an imaging device together with a drum cartridge, the imaging device being provided with a power output component, the drum cartridge including a pushing surface, a housing, and a conductive element movable relative to the housing, the pushing surface for pushing the developing cartridge, the housing having a left side wall and a right side wall spaced apart from each other, and a developing cartridge receiving portion located between the left side wall and the right side wall, the developing cartridge receiving portion for receiving the developing cartridge, the right side wall having an inner conductive portion and an outer conductive portion, the inner conductive portion being located on the side of the right side wall facing the developing cartridge receiving portion, and the outer conductive portion being located on the side of the right side wall facing away from the developing cartridge receiving portion, characterized in that... The inner conductive portion has a portion extending beyond the conductive element in a first direction, and the developing cartridge includes: A driving force receiver is disposed at the driving end of the developing cartridge; A developing element that receives a driving force from a driving force receiving element, the developing element rotating about a rotation axis extending in a first direction; The forced push part abuts against the forced push surface when the developing cartridge is installed into the drum cartridge. The forced push part is located at the non-driving end of the developing cartridge, and the non-driving end is opposite to the driving end in a first direction. An adapter that receives power by contacting a power output component, an external conductive part, or an extended part, wherein the position of the adapter for receiving power is different from the position where the forced push part abuts against the forced push surface.

6. The developing cartridge according to claim 5, characterized in that, The developing cartridge includes a developing bracket and a developing housing for containing developer, the developing bracket being connected to the developing housing, and the adapter being supported by the developing bracket or the developing housing.

7. The developing cartridge according to claim 6, characterized in that, A portion of the adapter is configured to reciprocate along a first direction.

8. The developing cartridge according to claim 5, characterized in that, The developing cartridge includes a powder ejector blade for adjusting the thickness of the developer layer on the outer surface of the developing element and a third power transmission unit for electrically connecting to the powder ejector blade, the third power transmission unit being disposed on the adapter.

9. The developing cartridge according to claim 8, characterized in that, The third power transmission unit is part of the developing bracket or adapter.

10. The developing cartridge according to claim 8, characterized in that, The third power transmission unit is a conductive component independent of the developing bracket and the adapter.

Images