Developing box and processing box

Abstract

According to the developing box and the processing box with the developing box, the developing box comprises a developing shell and a developing roller rotatably arranged in the developing shell, a powder bin used for containing a developing agent is formed in the developing shell, and the developing roller is used for supplying the developing agent to the outside of the developing box; the direction parallel to the axial direction of the developing roller is the left-right direction, the direction intersected with the left-right direction is the front-back direction, and the direction intersected with the left-right direction and the front-back direction is the up-down direction; the developing box further comprises at least one first developing agent supplementing opening which is used for filling the powder bin with a developing agent and is communicated with the powder bin, the first developing agent supplementing opening is formed in the developing shell, and the opening direction of the first developing agent supplementing opening is not parallel to the left-right direction; in the vertical direction, the first developer supplementing opening is directly exposed above the developing box, and a user can directly supplement the developer into the powder bin, so that the operation is simple and quick, and the user who is not familiar with the structure of the developing box can conveniently fill the developer.

Description

Technical Field

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

[0002] The developing cartridge can be detachably installed into an imaging device. The developing cartridge includes a developing housing and a developing roller rotatably disposed in the developing housing. The developing housing has a receiving cavity for holding the developer required by the imaging device. The developing roller is used to supply the developer to the outside of the developing cartridge.

[0003] The developing cartridge also includes a developer replenishment port for adding developer to the receiving cavity. Generally, in the axial direction of the developing roller, the developer replenishment port is located at one end of the developing cartridge, and the developer replenishment port is set on the developing housing. In a developing cartridge with this configuration, the distance between adjacent components is close at the end where the developer replenishment port is located, the distribution of components appears crowded, and different components are prone to interference. In addition, the developer replenishment port is located at the end of the developing cartridge, and the opening direction of the developer replenishment port is consistent with the axial direction of the developing roller. After the developing cartridge is installed in the imaging equipment, it is difficult for the user to directly replenish the receiving cavity with developer. Furthermore, even if the user removes the developing cartridge from the imaging equipment, the developer replenishment port will be blocked by the end cap of the developing cartridge or the drum box used to house the developing cartridge, making it difficult to replenish developer. It can be seen that the existing design makes the developer replenishment operation complicated, and personnel unfamiliar with the operation may even damage the developing cartridge during the filling process. Utility Model Content

[0004] The developing cartridge and processing cartridge having the developing cartridge provided by this utility model can solve at least one of the above-mentioned technical problems. The specific technical solutions are as follows:

[0005] A developing cartridge is detachably installed into an imaging device. The developing cartridge includes a developing housing and a developing roller rotatably disposed within the developing housing. A powder hopper for containing developer is formed inside the developing housing. The developing roller supplies developer to the outside of the developing cartridge. The direction parallel to the axial direction of the developing roller is the left-right direction, and the direction intersecting the left-right direction is the front-back direction. The developing roller is installed into the imaging device along the forward direction, and the direction intersecting both the left-right and front-back directions is the up-down direction.

[0006] The developing cartridge also includes at least one first developer replenishment port for filling the powder container with developer. The first developer replenishment port is in communication with the powder container, is disposed on the developing housing, and the opening direction of the first developer replenishment port is not parallel to the left-right direction.

[0007] The developing housing includes an upper sidewall, a first sidewall, and a second sidewall. The first sidewall and the second sidewall are spaced apart and opposite to each other in the left-right direction. The first sidewall and the second sidewall are located at the left and right ends of the upper sidewall, respectively. The first developer replenishment port penetrates the upper sidewall of the developing housing.

[0008] In the vertical direction, the first developer replenishment port is exposed directly to the top of the developing chamber.

[0009] In the left-right direction, the first developer replenishment port is located at at least one of the left and right ends of the upper sidewall, and / or the first developer replenishment port is located in the middle of the upper sidewall.

[0010] The developing cartridge also includes a stirring member for stirring the developer, the stirring member being rotatably disposed in the powder hopper, with the developing roller located in front of the stirring member in the front-back direction; at least a portion of the first developer replenishment port is closer to the developing roller than the rotation center of the stirring member.

[0011] The cartridge also includes a stirring member for stirring the developer, which is rotatably disposed in the powder hopper. In the front-to-back direction, the developing roller is located in front of the stirring member. At least a portion of the projection of the first developer replenishment port in the vertical direction overlaps with the projection of the rotation path of the stirring member in the vertical direction.

[0012] The developing cartridge also includes a stirring member for stirring the developer, the stirring member being rotatably disposed in the powder hopper, with the developing roller located in front of the stirring member in the front-back direction; and at least a portion of the first developer replenishment port located in front of the rotation center of the stirring member in the front-back direction.

[0013] The developing chamber also includes a second developer replenishment port disposed on the first or second side wall of the developing housing. The second developer replenishment port is connected to the powder hopper, and the opening direction of the second developer replenishment port is not parallel to the opening direction of the first developer replenishment port.

[0014] The processing cartridge includes the aforementioned developing cartridge and a drum cartridge with a photosensitive drum. The developing roller is used to supply developer to the photosensitive drum, thereby developing the electrostatic latent image formed on the surface of the photosensitive drum.

[0015] The imaging device is provided with an exposure port for allowing the installation or removal of a developer cartridge or processing cartridge and a door cover covering the exposure port; the drum cartridge includes a drum housing with a waste toner compartment, the photosensitive drum being rotatably disposed in the drum housing, the waste toner compartment being used to contain waste developer, and the drum housing also having a discharge port for discharging waste developer, the opening direction of the discharge port being non-parallel to the left and right directions; when the door cover is opened, the discharge port and / or the first developer replenishment port are exposed through the exposure port.

[0016] Compared with the prior art, in the developing cartridge and processing box with the developing cartridge provided by this utility model, the first developer filling port of the developing cartridge is directly exposed to the top of the developing cartridge in the vertical direction. Users can directly add developer to the toner cartridge. This operation is simple and quick, which is convenient for users who are not familiar with the structure of the developing cartridge to fill the developer. It not only avoids damage to the developing cartridge by the user during the filling process, but also improves the user experience. Attached Figure Description

[0017] Figure 1 This is a perspective view of the developing cartridge according to Embodiment 1 of this invention.

[0018] Figure 2 This is the developing cartridge edge involved in Embodiment 1 of the present invention. Figure 1 Plan view after sectioning along the AA direction.

[0019] Figure 3 and Figure 4 This is a perspective view of the processing box involved in Embodiment 2 of this invention.

[0020] Figure 5 This is the processing box edge involved in the second embodiment of the present invention. Figure 3 Plan view after sectioning along the BB direction. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0022] [Example 1]

[0023] Figure 1 This is a perspective view of the developing cartridge according to Embodiment 1 of this invention; Figure 2 This is the developing cartridge edge involved in Embodiment 1 of the present invention. Figure 1 Plan view after sectioning along the AA direction.

[0024] The developing cartridge 100 can be detachably installed into the imaging device, such as... Figure 1 and Figure 2 As shown, the developing cartridge 100 includes a developing housing 1 and a developing roller 2 rotatably disposed in the developing housing 1. A powder hopper 13 for containing developer is formed inside the developing housing 1, and the developing roller 2 is used to supply developer to the outside of the developing cartridge 100.

[0025] The developing cartridge 100 also includes a stirring member 4 for stirring the developer. The stirring member 4 is rotatably disposed in the powder hopper 13. The stirring member 4 includes a stirring roller shaft 41 and stirring blades 42. The stirring blades 42 rotate together with the stirring roller shaft 41.

[0026] The direction parallel to the axial direction of the developing roller 2 is the left-right direction, and the direction intersecting the left-right direction is the front-back direction. The developing roller 2 and the stirring member 4 are arranged in the front-back direction. The direction from the end where the developing roller 2 is not set to the end where the developing roller 2 is set is the forward direction. At least a part of the developing roller 2 is exposed to the outside of the developing box. The developing box 100 is installed to the imaging device in the forward direction. In the front-back direction, the developing roller 2 is located in front of the stirring member 4. The direction intersecting both the left-right direction and the front-back direction is the up-down direction. Preferably, the left-right direction, the front-back direction, and the up-down direction are orthogonal to each other.

[0027] The developing housing 1 includes an upper sidewall 111, a first sidewall 112, and a second sidewall 113. The first sidewall 112 and the second sidewall 113 are spaced apart and opposite to each other in the left-right direction. The first sidewall 112 and the second sidewall 113 are located at the left and right ends of the upper sidewall 111, respectively. The upper sidewall 111 faces upward toward the developing cartridge 100. The developing cartridge 100 also includes a driving force receiving member 6 for receiving driving force from the imaging device. The driving force receiving member 6 is used at least to directly or indirectly drive the developing roller 2 and the stirring member 4 to rotate. In the left-right direction, one of the first sidewall 112 and the second sidewall 113 is located at the same end of the developing housing 1 as the driving force receiving member 6.

[0028] In some embodiments, the developing cartridge 100 is also provided with a counter on the same side as the driving force receiver 6 in the left-right direction. The imaging device can identify the developing cartridge 100 through the counter and obtain the parameter information of the developing cartridge 100, including the model and service life of the developing cartridge 100.

[0029] In some embodiments, the developing cartridge also includes a powder feeding roller 3 for supplying developer to the developing roller 2, the powder feeding roller 3 being located between the developing roller 2 and the stirring member 4 in the front-to-back direction.

[0030] Continue as Figure 1 and Figure 2 As shown, the developing cartridge 100 also includes at least one first developer replenishment port 5 for replenishing developer to the powder container 13. The first developer replenishment port 5 is connected to the powder container 13. The first developer replenishment port 5 is disposed on the developing housing 1. In the vertical direction, the first developer replenishment port 5 is directly exposed to the top of the developing cartridge 100. The opening direction of the first developer replenishment port 5 is not parallel to the horizontal direction.

[0031] The first developer replenishment port 5 penetrates the upper sidewall 111 of the developing housing 1. Specifically, in the left-right direction, the first developer replenishment port 5 can be located at at least one of the left and right ends of the upper sidewall 111, and / or the first developer replenishment port 5 is located in the middle of the upper sidewall 111. In this configuration, the developer can be filled from different positions in the left-right direction of the developing cartridge 100, so that the developer filled into the powder hopper 13 is more evenly distributed in the powder hopper 13.

[0032] The first developer replenishment port 5 can be configured in the shape of a circle, a rhombus, or a rectangle.

[0033] At least a portion of the first developer replenishment port 5 is closer to the developing roller 2 than the rotation center N of the stirring member 4. In some embodiments, the minimum distance between the first developer replenishment port 5 and the developing roller 2 in the front-back direction is less than the distance between the rotation center N of the stirring member 4 and the developing roller 2.

[0034] In the front-to-back direction, at least a portion of the first developer replenishment port 5 is located in front of the rotation center N of the stirring member 4 / stirring roller shaft 41, and at least a portion of the projection of the first developer replenishment port 5 in the vertical direction overlaps with the projection of the rotation path M of the stirring member 4 in the vertical direction. With this arrangement, more developer can reach the front of the stirring member 4, thereby being conveyed to the developing roller 2 / powder feeding roller 3 more quickly. At the same time, when the replenished developer contains agglomerated developer, the stirring member 4 can also break up the agglomerated developer through the collision of the agglomerated developer with the stirring member 4, which facilitates the flow of developer.

[0035] The developing cartridge 100 also includes at least one seal for sealing the first developer replenishment port 5, the seal being matched with the first developer replenishment port 5.

[0036] In some embodiments, the developing cartridge 100 further includes a second developer replenishment port 8 disposed on the first sidewall 112 or the second sidewall 113 of the developing housing 1 (e.g., Figure 4 As shown), the second developer replenishment port 8 is also connected to the powder container 13. The opening direction of the second developer replenishment port 8 is not parallel to the opening direction of the first developer replenishment port. The user can also remove the developer cartridge 100 from the imaging device and fill the powder container 13 with developer through the second developer replenishment port 8 to reuse the developer cartridge 100. During the filling process, the first filling port 5 is sealed.

[0037] The developing cartridge 100 involved in this embodiment can be directly and detachably installed into the imaging device, or it can be first installed into a drum box with a photosensitive drum, and then the drum box and the developing cartridge 100 are detachably installed into the imaging device together. The drum box and the developing cartridge 100 are combined with each other, and the photosensitive drum is rotatably disposed in the drum box. The developing roller 2 is used to supply developer to the photosensitive drum, so that the electrostatic latent image formed on the surface of the photosensitive drum is developed.

[0038] The imaging device is provided with an exposure port for allowing the development cartridge 100 or processing cartridge to be installed or removed, and a door cover covering the exposure port. When the door cover is opened, the first developer replenishment port 5 provided on the development cartridge 100 is exposed through the exposure port. The user can directly fill the toner hopper 13 with developer through the first developer replenishment port 5. During the filling process, the development cartridge 100 or processing cartridge does not need to be removed from the imaging device, nor does the development cartridge 100 need to be removed from the drum cartridge.

[0039] Compared with the prior art, the developing cartridge 100 and the processing cartridge having the developing cartridge 100 provided in this embodiment have the following beneficial effects:

[0040] Firstly, the first developer replenishment port 5 is located on the upper side wall 111, rather than on the first side wall 112 or the second side wall 113 of the developing housing 1. With this arrangement, the design freedom of the left and right ends of the developing cartridge 100 is increased, and the possibility of interference between different components installed at the left and right ends is reduced. For example, the distance between the driving force receiving component and the counting component is increased, so they will not affect each other.

[0041] Secondly, in the vertical direction, the first developer replenishment port 5 is directly exposed to the top of the developer cartridge 100, allowing users to directly replenish developer into the powder container 13. This operation is simple and quick, making it convenient for users who are not familiar with the structure of the developer cartridge 100 to fill the developer. This not only avoids damage to the developer cartridge during the filling process but also improves the user experience.

[0042] Thirdly, in the left-right direction, the first developer replenishment port 5 can be located at the left and right ends of the upper sidewall 111, and / or the first developer replenishment port 5 can be located in the middle of the upper sidewall 111. In this way, the developer can be filled from different positions in the left-right direction of the developer cartridge 100, so that the developer filled into the powder hopper 13 is more evenly distributed.

[0043] Fourthly, when the developer in the developer cartridge 100 is depleted and the user does not have a replacement developer cartridge 100, the user can refill the developer through the first developer replenishment port 5 as an emergency measure.

[0044] Fifthly, based on the fourth aspect, the developing cartridge 100 is also provided with a second developer replenishment port 8 on the first side wall 112 or the second side wall 113 of the developing housing. The second developer replenishment port 8 is also connected to the powder hopper 13. When filling the developer through the second developer replenishment port 8, the developing cartridge 100 needs to be taken out first and then filled. This filling method is more suitable for professionals or personnel familiar with the structure of the developing cartridge 100 to fill the developer. This allows the developing cartridge 100 to be reused, extends the service life of the developing cartridge 100, and avoids waste of resources.

[0045] The developing cartridge 100, which is equipped with both a first developer replenishment port 5 and a second developer replenishment port 8, can be reused by filling the first developer replenishment port 5 for emergency treatment and by filling the second developer replenishment port 8.

[0046] Sixthly, in the front-back direction, at least a portion of the first developer replenishment port 5 is located in front of the rotation center N of the stirring member 4. With this arrangement, more developer that is filled into the powder hopper 13 through the first developer replenishment port 5 can reach the front of the stirring member 4, thereby being conveyed to the developing roller 2 / powder feeding roller 3 more quickly.

[0047] In the seventh aspect, at least a portion of the projection of the first developer replenishment port 5 in the vertical direction overlaps with the projection of the rotation path M of the stirring member 4 in the vertical direction. In this way, when the replenished developer contains agglomerated developer, the stirring member 4 can also break up the agglomerated developer, making it easier for the developer to flow in the powder hopper 13.

[0048] [Example 2]

[0049] Figure 3 and Figure 4 This is a perspective view of the processing box according to Embodiment 2 of this invention; Figure 5 This is the processing box edge involved in the second embodiment of the present invention. Figure 3 Plan view after sectioning along the BB direction.

[0050] This embodiment provides a processing box C that can be detachably installed into an imaging device, such as... Figure 3 , Figure 4 and Figure 5 As shown, the processing box C includes a developing box 100 and a drum box 200 connected to each other. The drum box 200 includes a drum housing 21 and a photosensitive drum 22 rotatably disposed in the drum housing 21. A waste developer hopper 24 is formed in the drum housing 21 for containing waste developer. The waste developer refers to the developer on the photosensitive drum 22 that has not been used for imaging and has been removed. The drum housing 21 is also provided with a discharge port 23 for discharging waste developer. The opening direction of the discharge port 23 is not parallel to the left and right direction.

[0051] Similar to Embodiment 1, the developing housing 1 of the developing cartridge 100 has a powder hopper 13 for containing developer formed inside, a first developer replenishment port 5 is provided on the upper side wall 111 of the developing housing 1, and a second developer replenishment port 8 is provided on the first side wall 112 or the second side wall 113 of the developing housing 1.

[0052] Similar to Embodiment 1, at least a portion of the projection of the first developer replenishment port 5 in the vertical direction overlaps with the projection of the rotation path M of the stirring member 4 in the vertical direction. In this embodiment, at least a portion of the first developer replenishment port 5 is farther away from the developing roller 2 than the rotation center N of the stirring member 4. In some embodiments, the arrangement of the first developer replenishment port 5 is the same as in Embodiment 1, and at least a portion of the first developer replenishment port 5 is closer to the developing roller 2 than the rotation center N of the stirring member 4.

[0053] The imaging device is provided with an exposure port for allowing the installation or removal of the developing cartridge 100 or the processing cartridge 200, and a cover covering the exposure port. When the cover is opened, the first developer replenishment port 5 is exposed through the exposure port, and the user can directly fill the toner hopper 13 with developer. During the filling process, neither the processing cartridge C nor the developing cartridge 100 needs to be removed from the imaging device, simplifying the developer filling operation. In addition, the discharge port 23 is also exposed through the exposure port, and the user can use a special tool to directly suck out the waste developer from the waste toner hopper 24 through the discharge port 23. During the discharge of the waste developer, neither the processing cartridge C nor the drum cartridge 200 needs to be removed from the imaging device, simplifying the operation steps.

[0054] Compared with the prior art, the processing box C provided in this embodiment has the following beneficial effects:

[0055] Firstly, the first developer replenishment port 5 is located on the upper side wall 111, rather than on the first side wall 112 or the second side wall 113 of the developing housing 1. With this arrangement, the design freedom of the left and right ends of the developing cartridge 100 is increased, and the possibility of interference between different components installed at the left and right ends is reduced. For example, the distance between the driving force receiving component and the counting component is increased, so they will not affect each other.

[0056] Secondly, in the vertical direction, the first developer replenishment port 5 is directly exposed to the top of the developer cartridge 100, allowing users to directly replenish developer into the powder container 13. This operation is simple and quick, making it convenient for users who are not familiar with the structure of the developer cartridge 100 to fill the developer. This not only avoids damage to the developer cartridge during the filling process but also improves the user experience.

[0057] Thirdly, in the left-right direction, the first developer replenishment port 5 can be located at the left and right ends of the upper sidewall 111, and / or the first developer replenishment port 5 can be located in the middle of the upper sidewall 111. In this way, the developer can be filled from different positions in the left-right direction of the developer cartridge 100, so that the developer filled into the powder hopper 13 is more evenly distributed.

[0058] Fourthly, when the developer in the developer cartridge 100 is depleted and the user does not have a replacement developer cartridge 100, the user can refill the developer through the first developer replenishment port 5 as an emergency measure.

[0059] Fifthly, based on the fourth aspect, the developing cartridge 100 is also provided with a second developer replenishment port 8 on the first side wall 112 or the second side wall 113 of the developing housing. The second developer replenishment port 8 is also connected to the powder hopper 13. When filling the developer through the second developer replenishment port 8, the developing cartridge 100 needs to be taken out first and then filled. This filling method is more suitable for professionals or personnel familiar with the structure of the developing cartridge 100 to fill the developer. This allows the developing cartridge 100 to be reused, extends the service life of the developing cartridge 100, and avoids waste of resources.

[0060] The developing cartridge 100, which is equipped with both a first developer replenishment port 5 and a second developer replenishment port 8, can be reused by filling the first developer replenishment port 5 for emergency treatment and by filling the second developer replenishment port 8.

[0061] Sixthly, in the front-back direction, at least a portion of the first developer replenishment port 5 is located in front of the rotation center N of the stirring member 4. With this arrangement, more developer that is filled into the powder hopper 13 through the first developer replenishment port 5 can reach the front of the stirring member 4, thereby being conveyed to the developing roller 2 / powder feeding roller 3 more quickly.

[0062] In the seventh aspect, at least a portion of the projection of the first developer replenishment port 5 in the vertical direction overlaps with the projection of the rotation path M of the stirring member 4 in the vertical direction. In this way, when the replenished developer contains agglomerated developer, the stirring member 4 can also break up the agglomerated developer, making it easier for the developer to flow in the powder hopper 13.

[0063] Eighthly, when the processing cartridge C is installed in the imaging device and the imaging device is turned on, the discharge port 23 is also directly exposed. The user can use a tool to directly suck out the waste developer from the waste toner container 24 through the discharge port 23. During the discharge process, the processing cartridge C / drum box 200 does not need to be removed from the imaging device, which makes the operation of discharging waste developer easier and facilitates the user to reuse the processing cartridge C.

Claims

1. A developing cartridge, detachably mounted to an imaging device, the developing cartridge including a developing housing and a developing roller rotatably disposed within the developing housing, the developing housing having a powder hopper for containing developer, and the developing roller for supplying developer to the outside of the developing cartridge; The direction parallel to the axial direction of the developing roller is the left-right direction, and the direction intersecting the left-right direction is the front-back direction. The developing roller is installed into the imaging equipment along the forward direction, and the direction intersecting both the left-right and front-back directions is the up-down direction. Its features are, The developing cartridge also includes at least one first developer replenishment port for filling the powder container with developer. The first developer replenishment port is in communication with the powder container, is disposed on the developing housing, and the opening direction of the first developer replenishment port is not parallel to the left-right direction.

2. The developing cartridge according to claim 1, characterized in that, The developing housing includes an upper sidewall, a first sidewall, and a second sidewall. The first sidewall and the second sidewall are spaced apart and opposite to each other in the left-right direction. The first sidewall and the second sidewall are located at the left and right ends of the upper sidewall, respectively. The first developer replenishment port penetrates the upper sidewall of the developing housing.

3. The developing cartridge according to claim 1, characterized in that, In the vertical direction, the first developer replenishment port is exposed directly to the top of the developing chamber.

4. The developing cartridge according to claim 2, characterized in that, In the left-right direction, the first developer replenishment port is located at at least one of the left and right ends of the upper sidewall, and / or the first developer replenishment port is located in the middle of the upper sidewall.

5. The developing cartridge according to claim 1, characterized in that, The developing cartridge also includes a stirring member for stirring the developer, the stirring member being rotatably disposed in the powder hopper, with the developing roller located in front of the stirring member in the front-back direction; At least a portion of the first developer replenishment port is closer to the developing roller than the rotation center of the stirring component.

6. The developing cartridge according to claim 1, characterized in that, The developing cartridge also includes a stirring member for stirring the developer, the stirring member being rotatably disposed in the powder hopper, with the developing roller located in front of the stirring member in the front-back direction; At least a portion of the projection of the first developer replenishment port in the vertical direction overlaps with the projection of the rotation path of the stirring member in the vertical direction.

7. The developing cartridge according to claim 1, characterized in that, The developing cartridge also includes a stirring member for stirring the developer, the stirring member being rotatably disposed in the powder hopper, with the developing roller located in front of the stirring member in the front-back direction; In the front-to-back direction, at least a portion of the first developer replenishment port is located in front of the rotation center of the stirring member.

8. The developing cartridge according to any one of claims 2 to 7, characterized in that, The developing chamber also includes a second developer replenishment port disposed on the first or second side wall of the developing housing. The second developer replenishment port is connected to the powder hopper, and the opening direction of the second developer replenishment port is not parallel to the opening direction of the first developer replenishment port.

9. A processing box, detachably mounted to an imaging device, characterized in that, The processing cartridge includes a developing cartridge as described in any one of claims 1 to 8 and a drum cartridge having a photosensitive drum, wherein the developing roller is used to supply developer to the photosensitive drum, thereby developing an electrostatic latent image formed on the surface of the photosensitive drum.

10. The processing box according to claim 9, characterized in that, The imaging device is provided with an exposure port for allowing the installation or removal of a developing cartridge or a processing cartridge, and a door cover covering the exposure port. The drum housing includes a drum shell with a waste toner compartment, and the photosensitive drum is rotatably disposed in the drum shell. The waste toner compartment is used to contain waste developer. The drum shell is also provided with a discharge port for discharging waste developer. The opening direction of the discharge port is not parallel to the left-right direction. When the door is opened, the discharge port and / or the first developer replenishment port are exposed through the exposure port.

Images