Developing box and processing box

Abstract

The utility model provides a developing box and a processing box which are detachably installed on imaging equipment, the developing box comprises a developing shell and a rotating piece installed on the developing shell, the rotating piece can rotate around a rotating axis parallel to a first direction, and the rotating piece comprises a first part, a rotating body and a second part which are connected and coaxially arranged, the developing box comprises a power receiving part for receiving power from the imaging equipment, one end, provided with the power receiving part, of the developing box is a conductive end, and the other end is a driving end; the first part is located at the conductive end and electrically connected with the power receiving piece; the first part is provided with a first surface intersected or perpendicular to the first direction, a conductive bracket with a supporting part is arranged in the developing box, the supporting part comprises a first side wall with a supporting surface, and the power output part of the power receiving part is propped against the supporting surface, so that the power output part has a trend of moving towards the developing roller shaft; in this way, the power output part can make closer contact with the first surface, and power is stably transmitted.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic photographic imaging, in particular to a developing box detachably installed in an electronic photographic imaging device and a processing box comprising the developing box. Background Art

[0002] The developing box can be installed to the imaging device in a detachable manner. The developing box includes a developing shell and a developing roller and a powder feeding roller installed in the developing shell. The developing roller includes a developing roller shaft and a developing roller layer, and the powder feeding roller includes a powder feeding roller shaft and a powder feeding roller layer. When the imaging device is imaging, the developing roller and the powder feeding roller need to be energized; a power receiving element for receiving power from the imaging device is provided in the developing box, and the output end of the power receiving element contacts the circumferential surface of the developing roller shaft and the circumferential surface of the powder feeding roller shaft to form an electrical connection, so that the developing roller and the powder feeding roller are energized; as the working time of the developing box increases, during the transmission of the said power, the contact between the output end of the power receiving element and the circumferential surface of the developing roller shaft and the circumferential surface of the powder feeding roller shaft is no longer tight, which will affect the transmission efficiency of the power. In some cases, the output end of the power receiving element is directly disconnected from the developing roller shaft and the powder feeding roller shaft, which will affect the normal operation of the developing box. Utility Model Content

[0003] The developer cartridge and the processing cartridge provided by the present invention can solve at least one of the above technical problems. The specific technical solutions are as follows:

[0004] A developing box, which can be detachably mounted to an imaging device, includes a developing housing and a rotating member mounted on the developing housing, the developing housing is used to accommodate a developer, the rotating member can rotate around a rotation axis parallel to a first direction, the rotating member includes a first part, a rotating body and a second part that are connected in sequence and coaxially arranged, the developing box also includes a power receiving member for receiving power from the imaging device, and along the first direction, one end of the power receiving member of the developing box is set as a conductive end, and the other end is set as a driving end.

[0005] The first part is located at the conductive end, the power receiving element is electrically connected to the first part, and the second part is located at the driving end; the first part has a first surface that intersects or is perpendicular to the first direction, and the first surface is used to contact the power receiving element and form an electrical connection; the first part also has a second surface adjacent to the first surface, and in the first direction, the distance between any point of the second surface and the driving end / second part is smaller than the distance between the first surface and the driving end / second part, and when the developing box is assembled, the power receiving element does not contact the second surface.

[0006] The developing box is provided with a conductive bracket at the conductive end, and the conductive bracket is detachably connected to the developing shell. The conductive bracket has a supporting portion for supporting the first part, and the supporting portion has a first side wall and a second side wall. In a first direction, the distance between the first side wall and the driving end is greater than the distance between the second side wall and the driving end. The first side wall and the second side wall enclose a accommodating cavity for accommodating the first part.

[0007] The power receiving part includes a power receiving portion, at least one power transmission portion and at least one power output portion connected in sequence, the power receiving portion is used to receive power from the imaging device, the power transmission portion is used to transmit power to the power output portion, the power transmission portion is not in contact with the first surface and the second surface, and the power output portion is used to transmit power to the rotating part; an avoidance portion connected to the accommodating cavity is provided on the second side wall, and at least a part of the power transmission portion is located in the avoidance portion.

[0008] The first side wall has a supporting surface, and in a direction intersecting with the first direction, the end of the supporting surface close to the avoidance portion is farther from the driving end in the first direction than the end of the supporting surface away from the avoidance portion.

[0009] When the developing cartridge is assembled, the power output portion is supported by the supporting surface.

[0010] The power output portion is provided with a protrusion protruding toward the rotating member / the first portion, and the protrusion is used to contact / abut against the first surface.

[0011] The rotating member is set to be one of a developing roller and a powder feeding roller, the powder feeding roller is used to transport the developer to the developing roller, and the developing roller is used to supply the developer to the photosensitive drum outside the developing box. The direction from the side where the developing roller is not installed to the side where the developing roller is installed is the forward direction, and the direction opposite to the forward direction is the backward direction. The front-to-back direction intersects with the first direction, and the direction intersecting with both the first direction and the front-to-back direction is the up-down direction.

[0012] The developing box is provided with a transmission assembly and a driving end cover at the driving end, and the driving end cover is detachably connected to the developing shell; the transmission assembly includes at least a powder feeding gear, and the driving force output by the imaging device is transmitted to the powder feeding roller through the powder feeding gear. The driving end cover has a shielding portion for shielding the powder feeding gear. When viewed from bottom to top, the shielding portion completely covers the powder feeding gear.

[0013] In the front-to-back direction, the developing box also includes a pushing assembly located at the rear end of the developing box, which is used to force the developing roller and the photosensitive drum to contact. The pushing assembly includes a first pushing part and a second pushing part. The first pushing part is arranged on the conductive bracket, and the second pushing part is arranged on the driving end cover.

[0014] The developing housing is provided with a powder filling port, through which the developer can be replenished into the developing housing; the conductive bracket also includes a sleeve portion for sleeved on a neck forming the powder filling port, the neck being connected to the developing housing, and at least a portion of the powder filling port being blocked by the sleeve portion.

[0015] The developing housing is provided with a powder filling port, through which the developer can be replenished into the developing housing; the conductive bracket also includes a socket portion for socketing on a neck forming the powder filling port, the neck being connected to the developing housing, and a through hole penetrating along a first direction being formed on the socket portion, the through hole being connected to the powder filling port.

[0016] The processing box includes a drum box and the above-mentioned developing box. The drum box includes a drum shell and a photosensitive drum rotatably arranged in the drum shell. The developing box can be accommodated by the drum shell. The surface of the photosensitive drum is used to form an electrostatic latent image. The developing roller is used to supply the developer to the surface of the photosensitive drum to develop the electrostatic latent image.

[0017] Compared with the prior art, on the one hand, the conductive bracket of the developing box provided by the utility model is provided with a support portion for supporting the first part of the rotating member, and the support portion includes a first side wall having a support surface, and the power output portion of the power receiving member abuts against the support surface. The support surface makes the power output portion have a tendency to move toward the developing roller shaft, so that the power output portion can form a closer contact with the first surface, and power can be transmitted more stably.

[0018] On the other hand, a first forced pushing portion is further provided on the conductive bracket, and a second forced pushing portion is further provided on the driving end cover. In the front-to-back direction, the first forced pushing portion and the second forced pushing portion are not provided on the developing shell. When the first forced pushing portion and / or the second forced pushing portion are worn or damaged and need to be replaced, or when the developing box is recycled and remanufactured, only the conductive bracket and / or the driving end cover with lower replacement cost need to be replaced, and the more expensive developing shell does not need to be replaced, thereby reducing manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1A and Figure 1B It is a three-dimensional diagram of the developing box involved in the present utility model.

[0020] Figure 2 This is an exploded view of some components of the conductive end of the developer box involved in the present invention.

[0021] Figure 3 It is a three-dimensional diagram of the conductive bracket of the developing box involved in the utility model.

[0022] Figure 4 It is a three-dimensional diagram of the conductive bracket and the power receiving component of the developing box involved in the present invention after being combined.

[0023] Figure 5 It is a three-dimensional diagram of the power receiving component of the developing box involved in the present invention.

[0024] Figure 6 This is an exploded view of the developer cartridge of the present invention after the driving end cover and the developer shell are separated.

[0025] Figure 7 It is a three-dimensional diagram of the driving end cover and the transmission component of the developing box involved in the present invention after being combined.

[0026] Figure 8 This is a plan view of the driving end of the developing cartridge of the present invention observed from bottom to top.

[0027] Figure 9 It is a three-dimensional diagram of the conductive end of the developer box involved in the present invention.

[0028] Figure 10 It is a three-dimensional diagram of the driving end of the developing box involved in the present invention. DETAILED DESCRIPTION

[0029] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0030] [Developer cartridge]

[0031] The developing cartridge 100 can be detachably mounted to an image forming apparatus, such as Figure 1A and Figure 1B As shown, the developing box 100 includes a developing shell 10 and a rotating member rotatably mounted on the developing shell 10, the rotating member rotates around a rotation axis, and the direction parallel to the rotation axis is a first direction. The rotating member includes a first part, a rotating body and a second part connected in sequence, and the first part, the rotating body and the second part are coaxially arranged.

[0032] The developing box 100 also includes a power receiving member 30 for receiving power from the imaging device and a driving force receiving member 40 for receiving driving force from the imaging device. The power receiving member 30 and the driving force receiving member 40 are arranged at intervals in the first direction. In the first direction, the end of the developing box 100 where the power receiving member 30 is provided is a conductive end, and the end where the driving force receiving member 40 is provided is a driving end.

[0033] The first part is located at the conductive end, and the power receiving element 30 is electrically connected to the first part, so that the rotating element can be energized. The second part is located at the driving end, and the second part can be directly or indirectly driven to rotate by the driving force received by the driving force receiving element 40, so that the rotating element can be driven to rotate around the rotation axis; the first part has a first surface 24 intersecting with the first direction, and the first surface 24 is used to contact and form an electrical connection with the power receiving element 30. The first part also has a second surface 25 adjacent to the first surface 24. In the first direction, the distance between any point of the second surface 25 and the driving end / second part is less than the distance between the first surface 24 and the driving end / second part. The second surface 25 is a circumferential surface formed on the first part, and the second surface 25 does not contact the power receiving element 30; in some embodiments, the first surface 24 is perpendicular to the first direction.

[0034] Along the first direction, at least a portion of the first part protrudes from the rotating body in a direction away from the rotating body, and at least a portion of the second part protrudes from the rotating body in a direction away from the rotating body. The protruding directions of the first part and the second part are opposite.

[0035] For example, the rotating member is set to be one of the developing roller 20 and the powder feeding roller. When the imaging device performs imaging, the rotating member needs to be energized; the developing housing 10 is used to accommodate the developer required for imaging of the imaging device, and the powder feeding roller is used to transport the developer to the developing roller 20. The developing roller 20 is used to supply the developer to the photosensitive drum outside the developing box 100. The developing roller 20 rotates around the first rotation axis L1. When the imaging device forms an image, the developing roller 20 and the photosensitive drum contact each other.

[0036] In the following, for the convenience of description, the direction parallel to the first rotation axis L1 is defined as the left-right direction, the left-right direction is parallel to the first direction, the direction from the side where the developing roller 20 is not installed to the side where the developing roller 20 is installed is the forward direction, the direction opposite to the forward direction is the backward direction, the left-right direction intersects with the front-back direction, the direction intersecting with both the left-right direction and the front-back direction is the up-down direction, and at least a portion of the developing roller 20 is located in front of the powder feeding roller.

[0037] like Figure 1A and Figure 2 As shown, the developing housing 10 is provided with a powder filling port 12 , through which the developer can be replenished into the developing housing 10 ; the developing box 100 further includes a sealing member 11 for sealing the powder filling port 12 .

[0038] like Figure 2As shown, the developing roller 20 includes a developing roller layer 21 and a developing roller shaft 22, and the developing roller shaft 22 protrudes from the left and right ends of the developing roller layer 21 respectively. When viewed in the left-right direction, the developing roller shaft 22 falls within the projection range of the developing roller layer 21; the powder feeding roller includes a powder feeding roller layer and a powder feeding roller shaft 23, and the powder feeding roller shaft 23 protrudes from the left and right ends of the powder feeding roller layer respectively. When viewed in the left-right direction, the powder feeding roller shaft 23 falls within the projection range of the powder feeding roller layer.

[0039] The portion of the powder feed roller shaft 23 located at the conductive end and one of the portions of the developing roller shaft 22 located at the conductive end can be regarded as the first portion of the rotating part, and the powder feed roller layer and the developing roller layer 21 can be regarded as the rotating body of the rotating part; in one embodiment, the developing roller shaft 22 protrudes from the left and right ends of the developing roller layer 21, and the developing roller shaft 22 does not pass through the developing roller layer 21, and the powder feed roller shaft 23 protrudes from the left and right ends of the powder feed roller layer, and the powder feed roller shaft 23 does not pass through the powder feed roller layer; in another embodiment, the developing roller shaft passes through the developing roller layer 21, and the powder feed roller shaft 23 passes through the powder feed roller layer. At this time, the developing roller shaft 22 covered by the developing roller layer 21 and the powder feed roller shaft 23 covered by the powder feed roller layer can also be regarded as the rotating body of the rotating part.

[0040] In the left-right direction, the end surface of the developing roller shaft 22 / powder feeding roller shaft 23 farthest from the driving end can be regarded as the first surface 24, and the radially outer circumferential surface of the developing roller shaft 22 / powder feeding roller shaft 23 located at the conductive end can be regarded as the second surface 25.

[0041] (Conductive end of the developer cartridge)

[0042] like Figure 3 As shown, the developer box 100 is provided with a conductive bracket 60 at the conductive end, and the conductive bracket 60 is detachably connected to the developer shell 10, and the conductive bracket 60 has a support portion 61 for supporting the first part of the rotating member, and the support portion 61 is configured to be a groove formed on the conductive bracket 60, and the groove is open toward the developer shell 10 / first part / left side, and the support portion 61 has a first side wall 611 and a second side wall 612 connected to each other, and the first side wall 611 and the second side wall 612 enclose a accommodating cavity 613 for accommodating the first part, and the first side wall 611 is located on the right side of the second side wall 612, or in other words, in the first direction, the distance between the first side wall 611 and the driving end is greater than the distance between the second side wall 612 and the driving end.

[0043] The second side wall 612 is provided with a recess 614 in communication with the accommodating cavity 613, and the first side wall 611 has a support surface 615 inclined relative to a plane passing through the front-rear direction and the up-down direction, specifically, in the front-rear direction, one end of the support surface 615 close to the recess 614 is farther away from the driving end in the left-right direction than the other end away from the recess 614; in the preferred embodiment, the support surface 615 is provided as a plane.

[0044] When the power receiving member 30 is mounted on the conductive support 60 and the developing cartridge 100 is assembled, the power receiving member 30 is in abutment with the first surface 24, and the power receiving member 30 is not in contact with the second surface 25; as shown in Figure 2 、 Figure 4 and Figure 5 The power receiving member 30 includes a power receiving portion 31, at least one power transmission portion 32 and at least one power output portion 33 connected in sequence, the power receiving portion 31 is used to form an electrical connection with the image forming device to receive power, the power transmission portion 32 is used to transmit power to the power output portion 33, and the power output portion 33 is used to transmit power to the rotating member so that the rotating member can form an electrical connection with the image forming device; at least a part of the power transmission portion 32 is located in the recess 614, and the power transmission portion 32 is not in contact with the first surface 24 and the second surface 25.

[0045] The power output portion 33 is used to contact the first surface 24 but not the second surface 25; when the developing cartridge 100 is assembled, the power output portion 33 is supported by the support surface 615, which makes the power output portion 33 have a tendency to move towards the first part, thereby making the power output portion 33 more closely contact the first surface 24; in some embodiments, the power output portion 33 is provided with a protrusion 331 protruding towards the first part, and the protrusion 331 is in contact with the first surface 24.

[0046] (Driving end of the developing cartridge)

[0047] As Figure 6As shown, the developing box 100 is provided with a driving end cover 70 at the driving end, and the driving end cover 70 is detachably connected to the developing shell 10. In the left and right directions, the developing shell 10 is located between the driving end cover 70 and the conductive bracket 60; the developing box 100 also includes a transmission component 80, at least a portion of the transmission component 80 is covered by the driving end cover 70, and the transmission component 80 includes at least a driving gear 81, a powder feeding gear 82 and a developing gear 83. The driving gear 81 is connected to the driving force receiving member 40 in the left and right directions. The driving force received by the driving force receiving member 40 is transmitted to the powder feeding gear 82 through the engagement of the driving gear 81 with the powder feeding gear 82, and is also transmitted to the developing gear 83 through the engagement of the driving gear 81 with the developing gear 83, so that the powder feeding roller and the developing roller 20 are driven to rotate.

[0048] The driving end cover 70 is provided with a first through hole 71, and the driving force receiving member 40 is exposed on the left side of the driving end cover 70 through the first through hole 71. That is, the driving force receiving member 40 is connected to the imaging device through the first through hole 71 and receives the driving force; Figure 7 and Figure 8 As shown, the driving end cover 70 also has a shielding portion 72, which is used to shield the powder feeding gear 82. When viewed from bottom to top, the shielding portion 72 completely covers the powder feeding gear 82. This arrangement can prevent the powder feeding gear 82 from interfering with other components and affecting the normal operation of the developer box 100. At the same time, it can also prevent impurities from falling onto the powder feeding gear 82.

[0049] In some embodiments, when viewed in the left-right direction, the power receiving portion 31 in the power receiving element 30 falls outside the projection range of the driving gear 81. Such a setting can reduce the impact of the vibration of the driving force receiving element 40 / driving gear 81 on the electrical connection between the power receiving element 30 and the imaging device.

[0050] like Figure 9 and Figure 10 As shown, the developer box 100 also includes a pushing assembly that can be pushed by a pushing block in the imaging device. In the front-to-back direction, the pushing assembly is located at the rear end of the developer box 100, and the pushing block can make the developer box 100 move forward as a whole, thereby keeping the developing roller 10 and the photosensitive drum in contact; the pushing assembly includes a first pushing portion 62 and a second pushing portion 73, the first pushing portion 62 is arranged on the conductive bracket 60, and the second pushing portion 73 is arranged on the driving end cover 70, and the first pushing portion 62 and the second pushing portion 73 are not arranged on the developer housing 10. When the first pushing portion 62 and / or the second pushing portion 73 are worn or damaged and need to be replaced, or when the developer box 100 is recycled and remanufactured, only the conductive bracket 60 and / or the driving end cover 70 with lower cost need to be replaced, and the developer housing 10 with higher cost does not need to be replaced, thereby reducing manufacturing costs.

[0051] The conductive bracket 60 further comprises a sleeving portion 63 sleeved on a neck portion 121 forming the powder filling port 12, the neck portion 121 being connected with the developing housing 10, so that the pushing force received by the pushing assembly can be stably and accurately transmitted to the developing housing 10 through the neck portion 121, ensuring that the developing cartridge 100 can move stably forward; in some embodiments, the neck portion 121 is not arranged in the developing cartridge 100, and at this time, the pushing force is transmitted to the developing housing 10 through the conductive bracket 60.

[0052] In some embodiments, the sleeving portion 63 is formed with a through hole penetrating in the first direction, the through hole being communicated with the powder filling port 12, so that when the developing cartridge 100 needs to be supplemented with the developer, the conductive bracket 60 does not need to be disassembled, and the user can conveniently supplement the developer; in some embodiments, at least a part of the powder filling port 12 is shielded by the sleeving portion 63.

[0053] [processing cartridge]

[0054] The developing cartridge 100 provided by the utility model is also applicable to a processing cartridge, the processing cartridge can be detachably installed to an electrophotographic imaging device, and the processing cartridge comprises the developing cartridge 100 and a drum cartridge combined with each other, the drum cartridge comprises a drum housing and a photosensitive drum rotatably arranged in the drum housing, and an electrostatic latent image can be formed on the surface of the photosensitive drum.

[0055] [beneficial effects]

[0056] Compared with the prior art, the developing cartridge 100 provided by the utility model has the following beneficial effects:

[0057] In a first aspect, the conductive bracket 60 is provided with a support portion 61 for supporting the first part of the rotating member, the support portion 61 comprises a first side wall 611 with a support surface 615, the power output portion 33 of the power receiving member 30 abuts against the support surface 615, the support surface 615 makes the power output portion 33 have a tendency to move towards the developing roller shaft 22, so that the power output portion 33 can form closer contact with the first surface 24, and power can be more stably transmitted.

[0058] In a second aspect, the support portion 61 comprises a second side wall 612 connected with the first side wall 611, the first side wall 611 and the second side wall 612 enclose a containing cavity 613 for containing the first part, and the second side wall 612 is provided with an avoiding portion 614 communicated with the containing cavity 613; after the developing cartridge 100 is assembled, the power transmission portion 32 in the power receiving member 30 does not contact the first surface 24 and the second surface 25, so that the power receiving member 30 can be prevented from short circuiting, wearing and the like.

[0059] Thirdly, a first pushing portion 62 is further provided on the conductive bracket 60, and a second pushing portion 73 is further provided on the driving end cover 70. In the front-to-back direction, the first pushing portion 62 is provided at the rear end of the conductive bracket 60, and the second pushing portion 73 is provided at the rear end of the driving end cover 70; the first pushing portion 62 and the second pushing portion 73 are not provided on the developing housing 10. When the first pushing portion 62 and / or the second pushing portion 73 are worn or damaged and need to be replaced, or when the developing box 100 is recycled and remanufactured, only the conductive bracket 60 and / or the driving end cover 70 with lower replacement cost need to be replaced, and the developing housing 10 with higher cost does not need to be replaced, thereby reducing the manufacturing cost.

[0060] Fourthly, the driving end cover 70 also has a shielding portion 72, which is used to shield the powder feeding gear 82. When viewed from bottom to top, the shielding portion 72 completely covers the powder feeding gear 82. This arrangement can prevent the powder feeding gear 82 from interfering with other components, and at the same time, it can also prevent impurities from falling onto the powder feeding gear 82; in addition, when the processing box / developing box 100 falls or is hit, the shielding portion 72 can protect the powder feeding gear 82 to avoid damage, and at the same time, this can make the appearance of the developing box 100 more beautiful.

Claims

1. A developer cartridge, removably mounted to an imaging device, comprising a developer housing and a rotatable member mounted on the developer housing, the developer housing being configured to accommodate developer, the rotatable member being rotatable about a rotation axis parallel to a first direction, the rotatable member comprising a first portion, a rotating body, and a second portion, which are sequentially connected and coaxially arranged, the developer cartridge further comprising a power receiving member for receiving power from the imaging device, wherein, along the first direction, one end of the power receiving member of the developer cartridge is configured as a conductive end, and the other end is configured as a driving end; It is characterized in that The first part is located at the conductive end, the power receiving element is electrically connected to the first part, and the second part is located at the driving end; the first part has a first surface that intersects or is perpendicular to the first direction, and the first surface is used to contact the power receiving element and form an electrical connection; the first part also has a second surface adjacent to the first surface, and in the first direction, the distance between any point of the second surface and the driving end / second part is smaller than the distance between the first surface and the driving end / second part, and when the developing box is assembled, the power receiving element does not contact the second surface.

2. The developing cartridge according to claim 1, wherein The developer cartridge is provided with a conductive bracket at the conductive end, the conductive bracket being detachably connected to the developer housing, the conductive bracket having a supporting portion for supporting the first portion, the supporting portion having a first side wall and a second side wall, in a first direction, a distance between the first side wall and the driving end is greater than a distance between the second side wall and the driving end, and the first side wall and the second side wall enclose a receiving cavity for receiving the first portion; The power receiving part includes a power receiving portion, at least one power transmission portion and at least one power output portion connected in sequence, the power receiving portion is used to receive power from the imaging device, the power transmission portion is used to transmit power to the power output portion, the power transmission portion is not in contact with the first surface and the second surface, and the power output portion is used to transmit power to the rotating part; an avoidance portion connected to the accommodating cavity is provided on the second side wall, and at least a part of the power transmission portion is located in the avoidance portion.

3. The developing cartridge according to claim 2, wherein: The first side wall has a supporting surface, and in a direction intersecting with the first direction, the end of the supporting surface close to the avoidance portion is farther from the driving end in the first direction than the end of the supporting surface away from the avoidance portion.

4. The developing cartridge according to claim 3, wherein: When the developing cartridge is assembled, the power output portion is supported by the supporting surface.

5. The developing cartridge according to claim 3, wherein: The power output portion is provided with a protrusion protruding toward the rotating member / the first portion, and the protrusion is used to contact / abut against the first surface.

6. The developing cartridge according to claim 3, wherein: The rotating member is configured as one of a developing roller and a powder feeding roller, the powder feeding roller is configured to feed the developer to the developing roller, and the developing roller is configured to supply the developer to the photosensitive drum outside the developing cartridge, the direction from the side where the developing roller is not mounted to the side where the developing roller is mounted is a forward direction, the direction opposite to the forward direction is a backward direction, the front-to-back direction intersects the first direction, and the direction intersecting both the first direction and the front-to-back direction is a vertical direction; The developing box is provided with a transmission assembly and a driving end cover at the driving end, and the driving end cover is detachably connected to the developing shell; the transmission assembly includes at least a powder feeding gear, and the driving force output by the imaging device is transmitted to the powder feeding roller through the powder feeding gear. The driving end cover has a shielding portion for shielding the powder feeding gear. When viewed from bottom to top, the shielding portion completely covers the powder feeding gear.

7. The developing cartridge according to claim 6, wherein: In the front-to-back direction, the developing box also includes a pushing assembly located at the rear end of the developing box, which is used to force the developing roller and the photosensitive drum to contact. The pushing assembly includes a first pushing part and a second pushing part. The first pushing part is arranged on the conductive bracket, and the second pushing part is arranged on the driving end cover.

8. The developing cartridge according to claim 2, wherein: The developing housing is provided with a powder filling port, through which the developer can be replenished into the developing housing; the conductive bracket also includes a sleeve portion for sleeved on a neck forming the powder filling port, the neck being connected to the developing housing, and at least a portion of the powder filling port being blocked by the sleeve portion.

9. The developing cartridge according to claim 2, wherein: The developing housing is provided with a powder filling port, through which the developer can be replenished into the developing housing; the conductive bracket also includes a socket portion for socketing on a neck forming the powder filling port, the neck being connected to the developing housing, and a through hole penetrating along a first direction being formed on the socket portion, the through hole being connected to the powder filling port.

10. A process cartridge, characterized in that The processing box includes a drum box and a developing box as described in any one of claims 1 to 9, the drum box includes a drum shell and a photosensitive drum rotatably arranged in the drum shell, the developing box can be accommodated by the drum shell, the surface of the photosensitive drum is used to form an electrostatic latent image, and the developing roller is used to supply developer to the surface of the photosensitive drum to develop the electrostatic latent image.

Images