Developing cartridge

Abstract

The utility model provides a developing box which is detachably mounted to imaging equipment provided with a driving force output part and an electric power output part, the developing box is used for being matched with a drum box, the drum box comprises a shell, a photosensitive part, a forced pushing assembly and an electric power input part, and a developing box accommodating part for accommodating the developing box and a side wall are formed on the shell; the forced pushing assembly is positioned in the developing box accommodating part; the power input part is used for being in contact with the power output part to receive power; the developing cartridge includes: a developing housing; a developing member rotatably provided in the developing housing about a rotation axis extending in a first direction, for carrying a developer and supplying the developer to the photosensitive member; the power transmission part is at least electrically connected with the developing part; in the first direction, the electric power input part penetrates through the side wall, when the developing box is installed in the developing box containing part, the developing box is forced to be pushed by the forced pushing assembly, the developing part and the photosensitive part are close to each other, the electric power transmission part is in contact with the electric power input part, and the developing box with the structure can stably receive electric power.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electrophotographic imaging, and particularly relates to a developing box for an electrophotographic imaging device. BACKGROUND

[0002] The developing box is a container containing a developer, wherein a developing roller is rotatably arranged, the developing roller is used to carry the developer and supply the developer to the photosensitive drum, so that the latent image formed on the surface of the photosensitive drum is developed.

[0003] It is known that the developer reaches the photosensitive drum from the developing roller by using the electric field force formed between the developing roller and the photosensitive drum, which requires that the developing roller is applied with voltage when the developing box is used for imaging; a developing box is detachably installed in a drum box provided with a photosensitive drum, the drum box is further provided with a pushing member for pushing the developing box towards the photosensitive drum, the pushing member is further provided with a conductive member, the conductive member is used to receive the power supplied by the imaging device and supply the power to the developing roller through a power receiving member arranged in the developing box.

[0004] In order to effectively push the developing box by the pushing member, the power receiving member in the developing box needs to be continuously rubbed with the pushing member during the installation and removal of the developing box, which may cause the conductive member and the power receiving member to be worn out, so that the conductive stability of the developing box itself is deteriorated or the use of the subsequent developing box in the drum box is affected. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a developing box adopting the following technical scheme to solve the above technical problems, and the specific scheme is as follows:

[0006] The developing box is detachably installed in an imaging device provided with a driving force output member and a power output member, the developing box is used to cooperate with a drum box, the drum box comprises a shell, a photosensitive member, a pushing assembly and a power input member, the photosensitive member is rotatably arranged in the shell, the shell is formed with a developing box accommodating portion for accommodating the developing box, and the shell further has a side wall forming part of the developing box accommodating portion; the pushing assembly is located in the developing box accommodating portion; the power input member is used to receive the power by contacting the power output member; the developing box comprises: a developing shell for accommodating the developer; a developing member rotatably arranged in the developing shell along a rotation axis extending in a first direction, used to carry the developer and supply the developer to the photosensitive member; and a power transmission member electrically connected with the developing member; in the first direction, the power input member passes through the side wall, when the developing box is installed in the developing box accommodating portion, the developing box is pushed by the pushing assembly, the developing member and the photosensitive member are close to each other, and the power transmission member receives the power by contacting the power input member or the power output member.

[0007] The developing cartridge further comprises a supply member rotatably arranged in the developing housing for supplying the developer to the developing member, and a powder discharge blade for adjusting a thickness of a developer layer on an outer surface of the developing member, and at least one of the supply member and the powder discharge blade is electrically connected with the power transmission member.

[0008] In the first direction, the power input member comprises an outer conductive part located outside the side wall and an inner conductive part located inside the side wall, the outer conductive part and the inner conductive part are electrically connected, and the power transmission member is arranged to be in contact with the outer conductive part or the inner conductive part.

[0009] The push assembly comprises a push member, an elastic member and a conductive member, the conductive member and the push member are movable relative to the developing housing under the elastic force of the elastic member, and the conductive member is in contact with the power input member; in a second direction intersecting the first direction, the conductive member is exposed forward from the push member, and the push member further has a push surface facing forward; the developing cartridge further has a pushed part in abutment with the push surface, and the position of the power transmission member for receiving power is different from the position of the pushed part for abutting against the push surface.

[0010] The developing cartridge further comprises a developing support at least for supporting the developing member, and the power transmission member comprises a relay member and a positioning part for positioning the relay member, the relay member is arranged to be in abutment with the power input member / inner conductive part / overhang part, and the positioning part is part of the developing support or part of the developing housing.

[0011] In some embodiments, the relay member is an elastic member made of a conductive material.

[0012] In some embodiments, the relay member is a conductive sheet, and the relay member is directly electrically connected with at least one of the developing member, the supply member and the powder discharge blade.

[0013] In some embodiments, the relay member is part of the developing support.

[0014] In some embodiments, a part of the relay member is reciprocable in the first direction.

[0015] In some embodiments, the relay member comprises a relay sheet, a retaining member and a contact member formed separately, the contact member is arranged to be in contact with the power input member to receive power, the relay sheet is arranged to be in contact with at least one of the developing member, the supply member and the powder discharge blade to transmit power, and the retaining member is arranged to retain the relay sheet and the contact member in an electrically connected state; the developing support or the developing housing is further provided with a receiving cavity for accommodating the contact member. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1A is a schematic view of the developing cartridge separated from the drum cartridge according to the present application.

[0017] Figure 1B is a perspective view of the drum cartridge according to the present application.

[0018] Figure 2 This is a perspective view of the conductive end of the developing cartridge according to Embodiment 1 of this utility model.

[0019] 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.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] Figure 7B This is a perspective view of the developing cartridge and the conductive components in the drum cartridge in the fifth embodiment of this utility model when they are in contact. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0026] [Overall structure of the developing chamber]

[0027] 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.

[0028] 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 cartridge 200, and a driving force output 92 for outputting driving force, the driving force output 92 outputs driving force to the developing cartridge 300 when the developing cartridge 300 develops in the imaging device; further, the imaging device is also provided with a device side urging member 93 for urging the driving force output 92 towards the developing cartridge 300; the developing cartridge 300 provided with the power transmission member 39 involved in each of the embodiments below will not interfere with the guide rail 91 during installation towards the imaging device or during removal from the imaging device.

[0029] The developing cartridge 300 includes a developing housing 3 for containing developer and supplying the developer towards the photosensitive member 21 described below, a rotating member rotatably provided in the developing housing 3, and a driving force receiving member 32 for receiving driving force from the driving force output 92 in the imaging device to drive the rotating member to rotate, the rotating member being at least any one of a developing member 31 for carrying the developer and a supply member 3b (as shown in Figure 5 The developing member 31 receives driving force from the driving force receiving member 32 to rotate around the rotation axis L.

[0030] In this definition, the direction in which the rotation axis L extends is the first direction, the direction intersecting the first direction is the second direction, and the direction intersecting the first direction and the second direction is the third direction, wherein, along the first direction, one end of the developing cartridge 300 provided with the driving force receiving member 32 is the driving end F / left, then, along the first direction, one end of the developing cartridge 300 not provided with the driving force receiving member 32 is the non-driving end / conductive end E / right; along the second direction, the developing member 31 is located at one end of the developing cartridge 300, and the developing member 31 is exposed towards the third direction, specifically, the developing cartridge 300 can be installed in the posture that the developing member 31 is located in front along the second direction, then, along the second direction, the direction opposite to the front is the back, the developing member 31 is exposed towards the upper of the third direction, then, along the third direction, the direction opposite to the upper is the lower.

[0031] Continue as Figure 1AAs shown, the developing cartridge 300 further comprises a driving end cover 34 and a developing bracket 38 connected with the developing housing 3, the driving end cover 34 and the developing bracket 38 are respectively located at two ends of the developing housing 3 along the first direction, the driving end cover 34 is arranged at the driving end F, the developing bracket 38 is arranged at the non-driving end E, and the driving force receiving member 32 is exposed from the driving end cover 34; further, the developing cartridge 300 further comprises a chip assembly 36, when the developing cartridge 300 is installed to the image forming device, the chip assembly 36 is used to establish a communication connection with the image forming device, and the position of the chip assembly 36 in the developing cartridge 300 can not be limited as long as the communication connection between the chip assembly 36 and the image forming device can be established.

[0032] Further, the developing cartridge 300 further comprises a powder outlet blade 3a, the powder outlet blade 3a is fixedly installed on the developing housing 3 and is used to adjust the toner layer thickness of the outer surface of the developing member 31, generally, at least a part of the powder outlet blade 3a is made of metal to enhance the strength of the powder outlet blade 3a.

[0033] [Overall structure of the drum cartridge]

[0034] The drum cartridge 200 comprises a housing 2, a photosensitive member 21 and a pushing assembly 23, the photosensitive member 21 is rotatably arranged in the housing 2, the housing 2 is further formed with a developing cartridge accommodating portion 22 for accommodating the developing cartridge 300, and the pushing assembly 23 is used to push the developing cartridge 300 towards the photosensitive member 21, the pushing assembly 23 comprises a left pushing assembly 23a arranged at the driving end and a right pushing assembly 23b arranged at the non-driving end, along the first direction, the housing 2 has a left side wall 2a and a right side wall 2b arranged in relative spacing, the developing cartridge accommodating portion 22 is located between the left side wall 2a and the right side wall 2b, and the pushing assembly 23 is also located between the left side wall 2a and the right side wall 2b, thus, the pushing assembly 23 is located in the developing cartridge accommodating portion 22, the left pushing assembly 23a is arranged close to the left side wall 2a, and the right pushing assembly 23b is arranged close to the right side wall 2b, or in other words, along the first direction, the left pushing assembly 23a is closer to the left side wall 2a than the right pushing assembly 23b, and the right pushing assembly 23b is closer to the right side wall 2b than the left pushing assembly 23a, the left side wall 2a and the right side wall 2b are both part of the developing cartridge accommodating portion 22.

[0035] In the utility model, the right side wall 2b is further provided with a power input member 26 used to be electrically connected with a power output member 94 in the image forming device, the right pushing assembly 23b comprises a right pushing member (referred to as "pushing member" for short) 23b1, an elastic member (not shown) and a conductive member 23b3, under the elastic force of the elastic member, the conductive member 23b3 and the pushing member 23b1 are both movable relative to the housing 2, that is to say, the pushing member 23b1 is movable relative to the conductive member 23b3; as Figure 1BAs shown, at least a part of the conductive member 23b3 is located in the urging member, so that the size of the right urging assembly 23b can be controlled, and the conductive member 23b3 can also serve as a guide when the urging member 23b1 moves, to ensure that the moving track of the urging member 23b1 does not deviate; along the second direction, the conductive member 23b3 is exposed forward from the urging member 23b1, and the urging member 23b1 also has a forward-facing urging surface 23b11, which is used to urge the developing cartridge 300.

[0036] Along the first direction, the power input member 26 penetrates through the right side wall 2b, like Figure 1B As shown, the power input member 26 includes an outer conductive part 261 located outside the right side wall 2b (the side away from the developing cartridge accommodating portion 22) and an inner conductive part 262 located inside the right side wall 2b (the side towards the developing cartridge accommodating portion 22), the outer conductive part 261 and the inner conductive part 262 are electrically connected, the outer conductive part 261 is used to be electrically connected with the power output member 94, and the inner conductive part 262 is used to supply power to the developing cartridge 300; along the second direction, the power input member 26 extends beyond the conductive member 23b3, specifically, a part of the power input member 26 is located in front of the conductive member 23b3, and at least the inner conductive part 262 has an overhanging part 263 beyond the conductive member 23b3 when viewed along the first direction.

[0037] In some embodiments, the conductive member 23b3 also receives power by directly contacting the inner conductive part 262, finally, the power output by the power output member 94 is transmitted to the developing cartridge 300 through the outer conductive part 261, the inner conductive part 262 and the conductive member 23b3 in turn, and at the same time, the developing cartridge 300 is also urged by the urging member 23b1, so that the right urging assembly 23b can not only supply power to the developing cartridge 300, but also urge the developing cartridge 300 to approach the photosensitive member 21.

[0038] In some embodiments, the conductive member 23b3 and the inner conductive part 262 can also be indirectly contacted, for example, a conductor is arranged between the two.

[0039] In some embodiments of the utility model, the developing cartridge 300 is provided with a power transmission member 39 which does not contact the conductive member 23b3, the power transmission member 39 receives power by contacting the power input member 26, which not only can simplify the power transmission path, but also can ensure that the developing cartridge 300 can receive power regardless of whether the power transmission member 39 contacts the conductive member 23b3.

[0040] [Power transmission member]

[0041] (Example one)

[0042] As shown, the power input member 26 includes an outer conductive part 261 located outside the right side wall 2b (the side away from the developing cartridge accommodating portion 22) and an inner conductive part 262 located inside the right side wall 2b (the side towards the developing cartridge accommodating portion 22), the outer conductive part 261 and the inner conductive part 262 are electrically connected, the outer conductive part 261 is used to be electrically connected with the power output member 94, and the inner conductive part 262 is used to supply power to the developing cartridge 300; along the second direction, the power input member 26 extends beyond the conductive member 23b3, specifically, a part of the power input member 26 is located in front of the conductive member 23b3, and at least the inner conductive part 262 has an overhanging part 263 beyond the conductive member 23b3 when viewed along the first direction. 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] Continue as Figure 3As shown, the developing support 38 is further provided with a forced pushing part 381, when the developing cartridge 300 is installed to the drum cartridge 200, the forced pushing part 381 abuts against the forced pushing surface 23b11, the developing member 31 is close to the photosensitive member 21, in practice, whether the forced pushing part 381 abuts against the conductive member 23b3 or not, the forced pushing of the developing cartridge 300 can be realized, preferably, the forced pushing part 381 does not contact the conductive member 23b3, that is, the position of the power transmission member 39 / adapter 30 for receiving power by contacting the power input member 26 is different from the position of the forced pushing part 381 for abutting against the forced pushing surface 23b11, or in other words, the position for receiving power and the position for abutting do not overlap, not only can the contact distance between the forced pushing part 381 and the right forced pushing assembly 23b be reduced during the installation of the developing cartridge 300 to the drum cartridge 200 or the removal of the developing cartridge 300 from the drum cartridge 200, thereby reducing the wear of the forced pushing part 381 and the right forced pushing assembly 23b, but also can prevent the conductive member 23b3 from being worn, thereby not affecting the user to install such a developing cartridge in the drum cartridge 200, the forced pushing part of which can contact the conductive member 23b3, so that the user's selectivity is higher.

[0048] In some embodiments, the forced pushing part 381 can also be directly provided on the developing housing 31.

[0049] In some embodiments, the adapter 30 is an elastic member installed on the developing support 38 or the developing housing 31, during the installation of the developing cartridge 300, the adapter 30 abuts against the inner conductive part 262 and is elastically deformed, 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 provided as a torsion spring.

[0050] (Example Two)

[0051] The same structures and components of the present embodiment as those of Example One will not be described again, such as Figure 4 As shown, the power transmission member 39 in the present embodiment further includes a third power transmission part 394 for electrically connecting with the powder outlet knife 3a, in this way, the powder outlet knife 3a can also be powered.

[0052] The third power transmission part 394 can be an independent conductive member from the developing support 38 and the adapter 30, or can be formed as part of the developing support 38 or the adapter 30, as long as it can realize the power supply to the powder outlet knife 3a.

[0053] (Example Three)

[0054] The same structures and components of the present embodiment as those of Example One 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] (Example 4)

[0059] 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.

[0060] 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.

[0061] 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.

[0062] (Example 5)

[0063] 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 keep 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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 to the drum cartridge 200, the contact piece 303 is in abutment with the inner conductive part 262, and the contact piece 303 is retracted in the first direction against the elastic force of the retaining piece 302 to move towards the direction close to the developing housing 3, the retaining piece 302 is elastically deformed, the contact piece 303 is in stable contact with the inner conductive part 262, and the electric power output by the electric power output piece 94 can be transmitted to the developing cartridge 300 through the outer conductive part 261, the inner conductive part 262, the contact piece 303 and the retaining piece 302.

[0068] When the developing cartridge 300 is taken out from the drum cartridge 200, the contact piece 303 is no longer in abutment with the inner conductive part 262, and the retaining piece 302 releases the elastic force, the contact piece 303 is pushed out in the first direction to move away from the developing housing 3 until the contact piece 303 is limited by the limiting piece arranged inside or outside the accommodating cavity 382, and it can be seen that the contact piece 303 in the embodiment can reciprocate in the first direction, or in other words, a part of the electric power transmission piece 39 / adapter piece 30 can reciprocate in the first direction.

[0069] In the embodiment, the position of the electric power transmission piece 39 for receiving electric power in contact with the electric power input piece 26 is different from the position of the forced pushing part 381 for being in abutment with the forced pushing surface 23b11, or in other words, the position for receiving electric power and the position for abutment do not overlap.

[0070] [Advantages]

[0071] As described above, the developing cartridge 300 in the utility model is provided with the electric power transmission piece 39, when the developing cartridge 300 is installed to the drum cartridge 200, the electric power transmission piece 39 directly receives electric power in contact with the electric power input piece 26, at the same time, the forced pushing part 381 is also in abutment with the right forced pushing assembly 23b / forced pushing surface 23b11 in the drum cartridge 200, thus the developing piece 31 is forced to move close to the photosensitive piece 21, and the electric power transmission piece 39 can stably receive electric power, the electric power transmission path is shortened, and the developing cartridge 300 can be forced to move whether the forced pushing part 381 is in contact with the conductive piece 23b3 in the right forced pushing assembly 23b or not.

[0072] When the forced pushing part 381 is not in contact with the conductive piece 23b3, the conductive piece 23b3 will not be abraded, so that even if the user replaces the developing cartridge capable of being in contact with the conductive piece 23b3, the conductive performance of the conductive piece 23b3 will not be reduced, and further, even if the electric power transmission piece 39 in the developing cartridge 300 is abraded, the user can find and replace it in time.

[0073] When the forced pushing part 381 is in 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 pushing part 381 can also back up each other to prevent one of them from being unable to stably receive power; further, even if the power transmission part 39 in the developing cartridge 300 is worn out, the user can find and replace it in time.

Claims

1. A developing cartridge detachably mounted to an image forming apparatus provided with a driving force output member and an electric power output member, the developing cartridge being configured to cooperate with a drum cartridge including a housing, a photosensitive member, a pusher assembly, and an electric power input member, the photosensitive member being rotatably provided in the housing, the housing being formed with a developing cartridge accommodating portion for accommodating the developing cartridge, and the housing further having a side wall forming a part of the developing cartridge accommodating portion. The urging assembly is located in the developing cartridge accommodating portion; The power input is configured to receive power by contacting the power output; The developing cartridge comprises: A developing housing configured to accommodate a developer; A developer rotatably disposed in the developing housing about a rotational axis extending along a first direction, configured to carry the developer and supply the photosensitive member; A power transfer electrically connected to at least the developer; In the first direction, the power input passes through the side wall, when the developing cartridge is installed into the developing cartridge accommodating portion, the developing cartridge is urged by the urging assembly, the developer and the photosensitive member are close to each other, and the power transfer receives power by contacting the power input or the power output. The developing cartridge further comprises a supply rotatably disposed in the developing housing, configured to supply the developer to the developer, and a powder outlet blade configured to adjust a thickness of a developer layer on an outer surface of the developer, at least one of the supply and the powder outlet blade is electrically connected to the power transfer.

2. The process cartridge according to claim 1, wherein In the first direction, the power input comprises an outer conductive portion located outside the side wall and an inner conductive portion located inside the side wall, the outer conductive portion and the inner conductive portion are electrically connected, and the power transfer is configured to contact the outer conductive portion or the inner conductive portion.

3. The process cartridge of claim 1, wherein, The urging assembly comprises an urging member, an elastic member, and a conductive member, the conductive member and the urging member are movable relative to the developing housing under the elastic force of the elastic member, and the conductive member contacts the power input; 4. The process cartridge of claim 1, wherein, In a second direction intersecting the first direction, the conductive member is exposed forwardly from the urging member, and the urging member further has an urging surface facing forwardly; The developing cartridge further has a urged portion abutting against the urging surface, and the power transfer is configured to receive power at a position different from a position of the urged portion for abutting against the urging surface. The developing cartridge further comprises a developing support configured to support at least the developer, and the power transfer comprises a relay and a positioning portion configured to position the relay, the relay is configured to abut against the power input / inner conductive portion / overhang portion, and the positioning portion is part of the developing support or part of the developing housing.

5. The process cartridge of claim 1, wherein, The relay is an elastic member made of a conductive material.

6. The process cartridge of claim 5 wherein, The relay is a conductive sheet, and the relay is directly electrically connected to at least one of the developer, the supply, and the powder outlet blade.

7. The process cartridge of claim 5 wherein, The relay is part of the developing support.

8. The process cartridge of claim 5 wherein, A portion of the relay is configured to reciprocate along the first direction.

9. The process cartridge of claim 5 wherein, The relay comprises a relay sheet, a retaining member, and a contact member, the contact member is configured to receive power by contacting the power input, the relay sheet is configured to transfer power by contacting at least one of the developer, the supply, and the powder outlet blade, and the retaining member is configured to retain the relay sheet and the contact member in an electrically connected state, and the developing support or the developing housing further comprises a receiving cavity configured to receive the contact member.

10. The process cartridge of claim 9 wherein, ​

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