Developing cartridge

Abstract

The utility model provides a developing box which can be detachably arranged on a drum box. A whole body formed by the developing box and the drum box can be detachably arranged on imaging equipment provided with an electric power output piece. The drum box comprises a drum shell, a first power receiving piece arranged on the drum shell and a photosensitive drum rotatably arranged in the drum shell, and the first power receiving piece is used for receiving power from the power output piece; the developing box comprises a doctor blade, a developing shell for accommodating a developing agent, and a developing roller and a powder feeding roller which are rotatably arranged in the developing shell; the doctor blade is used for adjusting the thickness of the developing agent on the developing roller; the developing box further comprises a second electric power receiving piece, one end of the second electric power receiving piece is used for making contact with the first electric power receiving piece / the electric power output piece to receive electric power, and the other end of the second electric power receiving piece is used for being electrically connected with the doctor blade. Therefore, the developing box receives electric power only through the second electric power receiving part, and the manufacturing cost of the developing box is reduced.

Description

TECHNICAL FIELD

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

[0002] The developing box can be detachably installed to the imaging device in a direct or indirect manner, and the existing developing box needs to be first installed to a drum box provided with a photosensitive drum, and then the whole formed by the developing box and the drum box is detachably installed to the imaging device.

[0003] The developing box is provided with a conductive end cover at one end of the length direction of the developing box, the conductive end cover can be electrically connected with one end of the rotating shaft, and the conductive end cover can also be electrically connected with the imaging device through the drum box.

[0004] As described above, at least part of the rotating member, the power transmission member and the conductive end cover of the developing box are made of conductive materials, which increases the manufacturing cost of the developing box. UTILITY MODEL CONTENTS

[0005] The developing box provided by the utility model can solve at least one of the above technical problems, and the specific technical solutions are as follows:

[0006] The developing box can be detachably installed to the drum box, and the whole formed by the developing box and the drum box can be detachably installed to the imaging device provided with a driving force output member and a power output member.

[0007] The developing box comprises:

[0008] The developing shell is used for containing a developing agent.

[0009] The powder feeding roller is used for supplying the developing agent to the developing roller, is rotatably arranged in the developing shell, and comprises a powder feeding roller shaft and a powder feeding roller layer located on the radial outer side of the powder feeding roller shaft.

[0010] The developing roller is used for supplying the developing agent to the photosensitive drum, is rotatably arranged in the developing shell, and comprises a developing roller shaft and a developing roller layer located on the radial outer side of the developing roller shaft.

[0011] A powder outlet blade in contact with the developer roller layer for adjusting the thickness of the developer on the developer roller layer.

[0012] The developing cartridge further comprises a second power receiving member, one end of the second power receiving member being configured to contact the first power receiving member or the power output member to receive power, and the other end of the second power receiving member being configured to electrically connect with the powder outlet blade.

[0013] The developing cartridge further comprises a driving force receiving member for receiving driving force from the driving force output member, the driving force receiving member and the second power receiving member being located at two ends of the developing cartridge in the length direction, the end of the developing cartridge provided with the second power receiving member being an electrically conductive end, and the end of the developing cartridge provided with the driving force receiving member being a driving end, the direction in which the driving end points to the electrically conductive end being a right direction; the developing cartridge further comprises a right end cover located at the electrically conductive end, the right end cover being configured to support at least the developer roller shaft, the second power receiving member being mounted on the right end cover, and the right end cover, the developer roller shaft and the powder feeding roller shaft not being electrically connected with the second power receiving member.

[0014] At least one of the right end cover, the developer roller shaft and the powder feeding roller shaft is made of a non-conductive material.

[0015] The right end cover comprises a first positioning portion and a second positioning portion for fixing the second power receiving member, the second positioning portion comprising a first side plate, a second side plate and a mounting cavity located between the first side plate and the second side plate, and the right end cover being provided with a mounting opening located between the first side plate and the second side plate and communicating with the mounting cavity.

[0016] The second power receiving member comprises a power receiving portion, an intermediate portion and a power output portion, the power receiving portion being configured to contact the first power receiving member / power output member, the power output portion being configured to electrically connect with the powder outlet blade, and the intermediate portion being configured to electrically connect the power receiving portion and the power output portion; the intermediate portion comprises a first connecting portion and a second connecting portion electrically connected with each other, the first connecting portion being electrically connected with the power receiving portion, and the second connecting portion being electrically connected with the power output portion, and the first connecting portion of the intermediate portion and the power receiving portion entering the mounting cavity through the mounting opening.

[0017] The power receiving portion comprises a first abutted portion and a second abutted portion connected with each other, the second side plate being provided with the first abutted portion, the first abutted portion having an abutment surface for abutting with the second abutted portion; the second positioning portion further comprises a limiting portion oppositely arranged with the abutment surface, the limiting portion being formed with an exposure opening communicating with the mounting cavity, and the first abutted portion being exposed through the exposure opening and configured to contact the first power receiving member or the power output member to receive power.

[0018] The limiting part further comprises a limiting surface opposite to the abutting surface, the limiting surface is used for preventing the first abutted part from directly separating from the exposure opening, and the limiting surface is farther away from the installation cavity than the exposure opening; the second abutted part is used for abutting with the limiting surface and the abutting surface.

[0019] The second power receiving part is installed to the right end cover, and the distance between the first abutted part and the installation cavity is farther than the distance between the exposure opening and the installation cavity.

[0020] The first side plate is provided with a spacing plate, a first limiting groove and a second limiting groove, and the spacing plate is located between the first limiting groove and the second limiting groove; the first connecting part of the middle part comprises a main body, and the main body is provided with a first matching part used for matching with the first limiting groove and the second limiting groove; during installation of the second power receiving part, the first matching part passes the spacing plate from the first limiting groove to the second limiting groove and is positioned in the second limiting groove.

[0021] The developing cartridge further comprises a chip, a chip support and a left end cover located at the driving end, the left end cover is spaced apart from the right end cover in the left-right direction, the chip is used for storing parameter information of the developing cartridge, the chip is installed to the chip support, the chip support is detachably installed on the left end cover, and the chip support is fixedly connected with the left end cover / developing shell.

[0022] The right end cover is provided with a clamping part used for matching with the drum cartridge, the clamping part is provided as a hook-shaped protrusion, the clamping part comprises a first part and a second part connected with each other, and the first part is inclined relative to the second part in a direction intersecting with the left-right direction.

[0023] Compared with the prior art, the developing cartridge provided by the utility model receives power from the power output part of the imaging device through the second power receiving part, the developing roller shaft, the photosensitive roller shaft and the right end cover do not form an electrical connection with the second power receiving part, and power is transmitted to the developing roller layer and the powder feeding roller layer only through the second power receiving part and the powder outlet knife, so that the right end cover, the developing roller shaft and the powder feeding roller shaft can be made of non-conductive materials, and therefore the developing cartridge can reduce the use of conductive materials and reduce the manufacturing cost of the developing cartridge. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1A And Figure 1B It is a perspective view of the developing cartridge.

[0025] Figure 2 It is a developing cartridge according to the utility model, and the plane view after cutting along the AA direction. Figure 1A

[0026] Figure 3 It is a perspective view of the conductive end of the developing cartridge.

[0027] ​Figure 4 is a perspective view of the right end cover of the developing box.

[0028] Figure 5 is a perspective view of the second power receiving member combined with the right end cover of the developing box.

[0029] Figure 6 is a partial enlarged view of the right end cover of the developing box.

[0030] Figure 7 is a perspective view of the second power receiving member of the developing box.

[0031] Figure 8 is a perspective view of the second power receiving member combined with the right end cover of the developing box.

[0032] Figure 9 is a plan view of the developing box observed in the direction from the conductive end to the driving end. DETAILED DESCRIPTION

[0033] Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0034] The developing box 100 can be detachably installed in an imaging device provided with a driving force output member and a power output member in a direct or indirect manner. Specifically, the developing box 100 is directly detachably installed in the imaging device, or the developing box 100 is first detachably installed in a drum box, the developing box 100 and the drum box are combined to form a process cartridge, and then the process cartridge is detachably installed in the imaging device. The drum box includes a drum shell, a first power receiving member provided on the drum shell, and a photosensitive drum 80 rotatably provided in the drum shell (as shown in Figure 2 The first power receiving member is used to receive power from the power output member, and the surface of the photosensitive drum 80 can form an electrostatic latent image.

[0035] Figure 1A and Figure 1B is a perspective view of the developing box of the present application; Figure 2 is a plan view of the developing box of the present application, which is cut along the AA direction. Figure 1A

[0036] The following will be described by taking the developing box 100 first installed in the drum box as an example. Figure 1A , Figure 1B and Figure 2 ​As shown, the developing cartridge 100 includes a developing housing 10, a developing roller 20, a powder feeding roller 30 and a powder discharge blade 40, the developing housing 10 is formed with a developer accommodating cavity 14 for accommodating a developer, and the developing roller 20 and the powder feeding roller 30 are rotatably arranged in the developing housing 10.

[0037] The powder feeding roller 30 includes a powder feeding roller shaft 31 and a powder feeding roller layer 32 located radially outside the powder feeding roller shaft 31, and the developing roller 20 includes a developing roller shaft 21 and a developing roller layer 22 located radially outside the developing roller shaft 21, the powder feeding roller layer 32 and the developing roller layer 22 are in contact with each other, so that the developer on the powder feeding roller layer 32 can be transported to the developing roller layer 22, and the developer on the developing roller layer 22 is transported to the photosensitive drum 80, and the powder discharge blade 40 is used to contact the developing roller layer 22 to adjust the thickness of the developer on the developing roller layer 22.

[0038] The developing cartridge 100 further includes a second power receiving member 50 and a driving force receiving member 60, the second power receiving member 50 is used to be electrically connected with the first power receiving member, so that the developing cartridge 100 can receive the power output by the power output member, and the driving force receiving member 60 is used to receive the driving force from the driving force output member, and the driving force received by the driving force receiving member 60 is at least used to drive the developing roller 20 and the powder feeding roller 30 to rotate, the second power receiving member 50 and the driving force receiving member 60 are respectively located at two ends of the developing cartridge 100, one end of the second power receiving member 50 is defined as a conductive end, and one end of the driving force receiving member 60 is defined as a driving end.

[0039] For the convenience of understanding and description below, it is defined that the direction in which the driving end of the developing cartridge 100 points to the conductive end is the right direction, that is, the driving end is the left end, and the conductive end is the right end.

[0040] Continuing as shown in Figure 1A and Figure 1B The developing cartridge 100 further includes a left end cover 11 located at the driving end and a right end cover 12 located at the conductive end, the right end cover 12 is at least used to support the developing roller shaft 21, and the left end cover 11 and the right end cover 12 are respectively connected with the developing housing 10, and the right end cover 12, the developing roller shaft 21 and the powder feeding roller shaft 31 all do not form an electrical connection with the second power receiving member 50.

[0041] The developing cartridge 100 further includes a chip 70 for storing parameter information of the developing cartridge 100 and a chip support 71 for mounting the chip 70, the chip support 71 is detachably mounted on the left end cover 11, and the chip support 71 is fixedly connected with the left end cover 11 / developing housing 10, or in other words, the chip support 71 cannot move relative to the left end cover 11 / developing housing 10.

[0042] In some embodiments, the right end cover 12, the developing roller shaft 21 and the powder feeding roller shaft 31 are made of non-conductive material, and the developing cartridge 100 receives the power output from the power output member through the second power receiving member 50.

[0043] In some embodiments, when the right end cover 12, the developing roller shaft 21 and the powder feeding roller shaft 31 are also made of conductive material, the right end cover 12, the developing roller shaft 21 and the powder feeding roller shaft 31 are not electrically connected with the second power receiving member 50, and the developing cartridge 100 still receives the power output from the power output member through the second power receiving member 50.

[0044] As shown in Figure 3 , Figure 4 and Figure 5 , the right end cover 12 comprises a first positioning part 121 and a second positioning part 122, and the second power receiving member 50 can be stably installed on the right end cover 12 by cooperating with the first positioning part 121 and the second positioning part 122; in some embodiments, the first positioning part 121 is a protruding column formed by extending from the side wall of the right end cover 12 facing the driving end to the direction away from the right end cover 12, and the second power receiving member 50 can be clamped on the first positioning part 121.

[0045] Figure 3 is a perspective view of a conductive end of the developing cartridge according to the present application; Figure 4 is a perspective view of a right end cover of the developing cartridge according to the present application; Figure 5 is a perspective view of the second power receiving member combined with the right end cover of the developing cartridge according to the present application; Figure 6 is an enlarged view of a part of the right end cover of the developing cartridge according to the present application.

[0046] As shown in Figure 3 , Figure 4 , Figure 5 and Figure 6 , the second positioning part 122 comprises a first side plate 123, a second side plate 124 and an installation cavity 125 combined with each other, the first side plate 123 is provided with a spacing plate 1231, a first limiting groove 1232 and a second limiting groove 1233, the spacing plate 1231 is used for spacing the first limiting groove 1232 and the second limiting groove 1233, the second side plate 124 is provided with a first abutting part 1241, and the first abutting part 1241 has an abutting surface 1242 used for abutting with the second conductive member 50.

[0047] The second positioning part 122 further has a limiting part 128 opposite to the abutting surface 1242, the limiting part 128 is formed with an exposure opening 127 communicated with the mounting cavity 125, thus the exposure opening 127 is opposite to the abutting surface 1242, the second power receiving part 50 contacts with the first power receiving part / power output part through the exposure opening 127 to receive power, preferably, the limiting part 128 is entirely formed as the exposure opening 127, thus the contact between the power receiving part 50 and the first power receiving part / power output part can be closer.

[0048] The right end cover 12 is further provided with a mounting opening 126 between the first side plate 123 and the second side plate 124, the mounting opening 126 is communicated with the mounting cavity 125, a part of the second power receiving part 50 enters the mounting cavity 125 through the mounting opening 126, the mounting opening 126 is arranged on the side wall of the right end cover 12 facing the driving end, thus the right end cover 12 can be closed at the end opposite to the mounting opening 126, and the second power receiving part 50 can be prevented from falling off.

[0049] Figure 7 It is a perspective view of the second power receiving part of the developing box.

[0050] As shown in Figure 7 , the second power receiving part 50 comprises a power receiving part 51, an intermediate part 52 and a power output part 53, the power receiving part 51 is used for contacting with the first power receiving part / power output part to receive power, the power output part 53 is used for connecting with the powder outlet knife 40, the intermediate part 52 is used for electrically connecting the power receiving part 51 and the power output part 53, the power of the image forming equipment is transmitted to the power receiving part 51 through the first power receiving part, is transmitted to the power output part 53 through the intermediate part 52, and is then transmitted to the powder outlet knife 40 through the power output part 53, then the powder outlet knife 40 transmits the power to the developing roller layer 22, finally, the power is transmitted to the powder outlet roller layer 32 by the developing roller layer 22.

[0051] Figure 8 It is a perspective view of the second power receiving part of the developing box combined with part assemblies of the right end cover.

[0052] As shown in Figure 5 , Figure 7 and Figure 8 , the power receiving part 51 comprises a first abutted part 511 and a second abutted part 512 connected with each other, the first abutted part 511 contacts with the first power receiving part / power output part through the exposure opening 127 to receive power, and the first abutted part 511 is connected with the first connecting part 523 and the second abutted part 512 at the same time.

[0053] The intermediate part 52 comprises a first connecting part 523 and a second connecting part 524 which are electrically connected to each other, the first connecting part 523 is electrically connected to the power receiving part 51, and the second connecting part 524 is electrically connected to the power output part 53, the first connecting part 523 and the power receiving part 51 can enter the mounting cavity 125 through the mounting opening 126, and the first abutted part 511 of the power receiving part 51 can form electrical connection with the first power receiving part / power output part through the exposure opening 127.

[0054] In some embodiments, the limiting part 128 is only partially formed with the exposure opening 127, and the limiting part 128 further comprises a limiting surface 1281 which is arranged opposite to the abutting surface 1242, and the limiting surface 1281 is used to prevent the first abutted part 511 from directly separating from the mounting cavity 125 through the exposure opening 127, and compared with the exposure opening 127, the limiting surface 1281 is farther away from the mounting cavity 125.

[0055] According to the above description, compared with the exposure opening 127, the limiting surface 1281 is farther away from the mounting cavity 125, so, as shown in Figure 8 when the second power receiving part 50 is mounted to the right end cover 12, compared with the exposure opening 127, the distance between the first abutted part 511 and the mounting cavity 125 is farther, or in other words, the first abutted part 511 protrudes out of the exposure opening 127 in a direction away from the mounting cavity 125, such an arrangement can not only make the first abutted part 511 and the first power receiving part form closer contact, but also prevent the first abutted part 511 from directly separating from the mounting cavity 125 through the exposure opening 127.

[0056] The second abutted part 512 is used to abut against the limiting surface 1281 and the abutting surface 1242 of the first abutting part 1241, and under the joint action of the first abutting part 1241 and the limiting surface 1281, the power receiving part 51 / the first abutted part 511 is positioned in the mounting cavity 125.

[0057] The second power receiving part 50 / the intermediate part 52 is further provided with a first matching part 521 which is used to match with the first limiting groove 1232 and the second limiting groove 1233, the first matching part 521 is arranged on the first connecting part 523 of the intermediate part 52, the first connecting part 523 comprises a main body 5231, and the first matching part 521 is integrally formed with the main body 5231, the first matching part 521 is formed as a cantilever-shaped protrusion which protrudes from the main body 5231, the first matching part 521 comprises a fixed end 5211 and a movable end 5212 which are connected to each other, the fixed end 5211 is fixedly connected to the main body 5231, and under the action of an external force, the movable end 5212 can move relative to the main body 5231 / the fixed end 5211.

[0058] In the process of installing the second power receiving member 50 to the right end cover 12, the first matching part 521 passes the partition plate 1231 from the first limiting slot 1232 to the second limiting slot 1233, specifically, as the first connecting part 523 of the power receiving part 51 and the intermediate part 52 enters the installation cavity 125 from the installation opening 126, the first matching part 521 enters the first limiting slot 1232, then, as the installation process continues, the first matching part 521 passes the partition plate 1231 to enter the second limiting slot 1233, and the first matching part 521 is limited in the second limiting slot 1233, such arrangement can further fix the first connecting part 523 / power receiving part 51 in the right end cover 12, prevent the position of the first connecting part 523 / power receiving part 51 from changing, and affect the transmission of power.

[0059] The intermediate part 52 is also provided with a second matching part 522 for cooperating with the first positioning part 121, and the second matching part 522 is provided as a through hole; in the second power receiving member 50, the first matching part 521 is arranged close to the power receiving part 51, and the second matching part 522 is arranged close to the power output part 53, so that the second power receiving member 50 can be more stably positioned on the right end cover 412, and further prevent the position of the second power receiving member 50 from changing.

[0060] Figure 9 It is the plan view of the developing cartridge involved in the utility model along the direction from the conductive end to the driving end.

[0061] As Figure 3 and Figure 9 shown, the right end cover 12 is also provided with a clamping part 13, through the cooperation between the clamping part 13 and the drum cartridge, the developing cartridge 100 can be stably installed in the drum cartridge, the clamping part 13 is provided as a hook-shaped protrusion, and the clamping part 13 includes a first part 131 and a second part 132 connected with each other, and in the direction intersecting with the left-right direction, the first part 131 is inclined relative to the second part 132.

[0062] The developing cartridge 100 also includes at least one protection member, when the developing rollers 20 at the left and right ends of the developing roller layer 22 contact with the photosensitive drum, the protection member can weaken the extrusion of the photosensitive drum 80 to the developing roller 20 / developing roller layer 22, and then, the contact area of the photosensitive drum 80 and the developing roller layer 22 is reduced, and even if the developing roller 20 and the photosensitive drum 80 do not separate from each other but still maintain the mutual contact during the non-imaging period of the developing cartridge 100, the risk of damage to the developing roller 20 caused by the long-term extrusion of the photosensitive drum 80 can also be reduced.

[0063] [Beneficial effects]

[0064] Compared with the prior art, the developing box 100 has the following beneficial effects:

[0065] In the first aspect, the developing box 100 receives power from the power output part of the imaging device through the second power receiving part 50, the developing roller shaft 21, the photosensitive roller shaft 31 and the right end cover 12 are not electrically connected with the second power receiving part 50, and the power is only transmitted to the developing roller layer 22 and the powder feeding roller layer 32 through the second power receiving part 50 and the powder outlet knife 40. In this way, the right end cover 12, the developing roller shaft 21 and the powder feeding roller shaft 31 can be made of non-conductive materials, so that the developing box 100 can reduce the use of conductive materials and reduce the manufacturing cost of the developing box 100.

[0066] In the second aspect, during the transmission of power, the power is only transmitted to the developing roller layer 22 and the powder feeding roller layer 32 through the second power receiving part 50, so that the risk of short circuit can be reduced.

[0067] In the third aspect, the developing box 100 no longer sets a separating member for separating the developing roller 20 and the photosensitive drum 80, and the developing box 100 is provided with a protection part at the left and right ends of the developing roller layer 22. The protection part can weaken the extrusion of the photosensitive drum 80 to the developing roller 20 / developing roller layer 22, and reduce the contact area between the photosensitive drum 80 and the developing roller layer 22.

[0068] During the non-imaging period of the developing box 100, even if the developing roller 20 and the photosensitive drum 80 are not separated from each other but still in contact with each other, the risk of damage to the developing roller 20 caused by long-term extrusion of the photosensitive drum 80 can be reduced. In addition, the manufacturing cost of the developing box 100 without the separating member is reduced, and the design freedom of the developing box 100 is improved.

[0069] In the fourth aspect, the right end cover 12 is provided with a mounting port 126 for mounting the power receiving part 51 and the first connecting part 523 in the second power receiving part 50. The mounting port 126 is arranged on the side wall of the right end cover 12 facing the driving end. In this way, one end of the right end cover 12 opposite to the mounting port 126 can be closed to prevent the conductive part from falling off.

Claims

1. A developing cartridge detachably mountable to a drum cartridge, the developing cartridge and the drum cartridge constituting an entirety which is detachably mountable to an image forming apparatus provided with a driving force output member and an electric power output member; the drum cartridge including a drum housing, a first electric power receiving member provided on the drum housing for receiving electric power from the electric power output member, and a photosensitive drum rotatably provided in the drum housing; the developing cartridge including: a developing housing for accommodating a developer; a powder feeding roller for supplying the developer to a developing roller, rotatably provided in the developing housing, including a powder feeding roller shaft and a powder feeding roller layer located radially outward of the powder feeding roller shaft; the developing roller for supplying the developer to the photosensitive drum, rotatably provided in the developing housing, including a developing roller shaft and a developing roller layer located radially outward of the developing roller shaft, the powder feeding roller layer being in contact with the developing roller layer so that the developer on the powder feeding roller layer can be supplied to the developing roller layer; a powder regulating blade in contact with the developing roller layer for regulating a thickness of the developer on the developing roller layer; characterized in that the developing cartridge further includes a second electric power receiving member, one end of the second electric power receiving member being configured to be in contact with the first electric power receiving member or the electric power output member for receiving electric power, and the other end of the second electric power receiving member being configured to be electrically connected to the powder regulating blade.

2. The process cartridge according to claim 1, wherein the developing cartridge further including a driving force receiving member for receiving a driving force from the driving force output member, the driving force receiving member and the second electric power receiving member being located at two ends of the developing cartridge in a length direction of the developing cartridge, the developing cartridge being provided with the one end of the second electric power receiving member as an electrically conductive end and the one end of the driving force receiving member as a driving end, the driving end being directed in a right direction with respect to the electrically conductive end; the developing cartridge further including a right end cover located at the electrically conductive end, the right end cover being configured to support at least the developing roller shaft, the second electric power receiving member being mounted on the right end cover, the right end cover, the developing roller shaft and the powder feeding roller shaft being free of electrical connection with the second electric power receiving member.

3. The process cartridge of claim 2 wherein, at least one of the right end cover, the developing roller shaft and the powder feeding roller shaft is made of a non-electrically conductive material.

4. The process cartridge of claim 2 wherein, the right end cover includes a first positioning portion and a second positioning portion for fixing the second electric power receiving member, the second positioning portion including a first side plate, a second side plate and a mounting cavity located between the first side plate and the second side plate; the right end cover is provided with a mounting opening located between the first side plate and the second side plate and in communication with the mounting cavity; the second electric power receiving member includes an electric power receiving portion, an intermediate portion and an electric power output portion, the electric power receiving portion being configured to be in contact with the first electric power receiving member / the electric power output member, the electric power output portion being configured to be electrically connected to the powder regulating blade, and the intermediate portion being configured to electrically connect the electric power receiving portion and the electric power output portion; the intermediate portion includes a first connecting portion and a second connecting portion electrically connected to each other, the first connecting portion being electrically connected to the electric power receiving portion, and the second connecting portion being electrically connected to the electric power output portion, the first connecting portion of the intermediate portion and the electric power receiving portion entering the mounting cavity through the mounting opening.

5. The process cartridge of claim 4 wherein, the electric power receiving portion includes a first abutted portion and a second abutted portion connected to each other, the first side plate is provided with the first abutted portion, the first abutted portion having an abutment surface for abutting against the second abutted portion; The second positioning part further has a limiting part opposite to the abutting surface, and an exposure opening is formed in the limiting part and communicates with the mounting cavity, the first abutted part is exposed through the exposure opening and is used for contacting the first power receiving member or the power output member to receive power.

6. The process cartridge of claim 5 wherein, The limiting part further comprises a limiting surface opposite to the abutting surface, the limiting surface is used for preventing the first abutted part from directly separating from the exposure opening, and the limiting surface is farther away from the mounting cavity than the exposure opening; and the second abutted part is used for abutting against the limiting surface and the abutting surface.

7. The process cartridge of claim 5 wherein, The second power receiving member is mounted to the right end cover, and the distance between the first abutted part and the mounting cavity is farther than the distance between the exposure opening and the mounting cavity.

8. The process cartridge of claim 4 wherein, The first side plate is provided with a spacing plate, a first limiting groove and a second limiting groove, and the spacing plate is located between the first limiting groove and the second limiting groove; the first connecting part of the intermediate part comprises a main body, and the main body is provided with a first matching part used for matching the first limiting groove and the second limiting groove; during the mounting process of the second power receiving member, the first matching part passes through the spacing plate from the first limiting groove to the second limiting groove and is positioned in the second limiting groove.

9. The process cartridge according to any one of claims 2 to 8, wherein, The developing cartridge further comprises a chip, a chip support and a left end cover at the driving end, the left end cover is spaced apart from the right end cover in the left-right direction, the chip is used for storing parameter information of the developing cartridge, the chip is mounted to the chip support, the chip support is detachably mounted on the left end cover, and the chip support is fixedly connected with the left end cover / developing shell.

10. The process cartridge according to any one of claims 2 to 8, wherein, The right end cover is provided with a clamping part used for matching the drum cartridge, the clamping part is provided as a hook-shaped protrusion, the clamping part comprises a first part and a second part connected with each other, and the first part is inclined relative to the second part in a direction intersecting the left-right direction.

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