A processing box

Abstract

This application discloses a processing cartridge, comprising: a photosensitive drum; a first unit including the photosensitive drum; a developing roller for depositing developer onto the photosensitive drum; and a second unit including the developing roller. The first unit includes the photosensitive drum and a first frame, the photosensitive drum being rotatably supported by the first frame. The second unit includes a charging member and a second frame, the charging member being used to charge the photosensitive drum, and both the charging member and the developing roller being supported by the second frame. This application simplifies the structure of the first unit containing the photosensitive drum and reduces the complexity of the first unit.

Description

Technical Field

[0001] This application relates to the field of electrophotographic imaging technology, and more particularly to a processing box. Background Technology

[0002] A processing cartridge is a component that is detachably installed in an imaging device. The processing cartridge includes a photosensitive drum that can be exposed to laser or LED to form an electrostatic latent image on its surface, and a charging component that is electrically connected to the imaging device and can charge the photosensitive drum.

[0003] In related technologies, the charging component is usually mounted on the photosensitive drum unit together with the photosensitive drum, and the power connection component used to realize the electrical connection between the charging component and the imaging device also needs to be set on the photosensitive drum unit, which makes the structure of the photosensitive drum unit more complex. Utility Model Content

[0004] To address the aforementioned problems, this application provides a new processing box, primarily implemented through the following technical solutions:

[0005] A processing box, comprising:

[0006] Photosensitive drum;

[0007] The first unit contains a photosensitive drum;

[0008] The developing roller is used to deposit developer onto the photosensitive drum.

[0009] The second unit contains a developing roller;

[0010] The first unit includes a photosensitive drum and a first frame, wherein the photosensitive drum can be rotatably supported by the first frame;

[0011] The second unit includes a charging component and a second frame. The charging component is used to charge the photosensitive drum, and both the charging component and the developing roller are supported by the second frame.

[0012] This embodiment simplifies the structure of the first unit and reduces its complexity by placing the photosensitive drum separately on the first unit and the charging component on the second unit where the developing roller is located.

[0013] Optionally, the processing box further includes a movable component and a first elastic member. The movable component is movably connected to the second frame and abuts against the first frame at one end. The first elastic member is disposed between the movable component and the charging component and is configured to bias the movable component away from the charging component.

[0014] By adopting the above technical solution, it is helpful to transmit the clamping force that drives the charging component to move toward the photosensitive drum to the first elastic member, and convert the clamping force into the movement of the moving component relative to the surface of the first frame through the first elastic member. This can promptly transmit the clamping force from the charging component to the moving component, reducing the risk that the clamping force will directly act on the charging component and cause the charging component to press against the photosensitive drum, making it difficult for the second unit to move from the developing position to the separating position.

[0015] Optionally, the movable component includes a movable support and a movable contact portion connected to the movable support at one end. The movable support is movably connected to the second frame, and the other end of the movable contact portion abuts against the first frame.

[0016] The first elastic element can provide a biasing force for the movable support to move relative to the second frame, and the movable contact can follow the movable support to move along the surface of the first frame.

[0017] By adopting the above technical solution, a movable contact part is provided on the movable component to contact the surface of the first frame, and the movable contact part can move along the surface of the first frame following the movable support part. During the movement of the second unit, the movable contact part can move smoothly along the surface of the first frame, which helps to achieve smooth operation of the movable component.

[0018] Optionally, the first frame includes a housing contact portion, and the movable contact portion movably abuts against the housing contact portion;

[0019] The housing contact part has an arc-shaped surface, and the part of the moving contact part that contacts the housing contact part has an arc-shaped structure.

[0020] By adopting the above technical solution, the friction between the moving contact part and the housing contact part can be effectively reduced, further improving the smoothness of the moving component when moving relative to the surface of the first frame, and helping to improve the stability of the second unit moving relative to the first unit between the developing position and the separating position.

[0021] Optionally, the second frame includes a bearing plate, and the moving assembly further includes a guide post connected to the bearing plate. The guide post can move relative to the bearing plate under the biasing force provided by the first elastic member, and the end of the guide post moves along the surface of the first frame. The moving contact portion is configured as the end of the guide post that contacts the first frame.

[0022] By adopting the above technical solution, the guide post can provide guidance for the movement of the moving component relative to the second frame, which helps to achieve smooth movement of the moving component. The end of the guide post is constructed as a moving contact part, which can simplify the structure of the moving component.

[0023] Optionally, the bearing plate includes a first bearing plate and a second bearing plate. In a first direction in which the photosensitive drum extends, the first bearing plate and the second bearing plate are respectively disposed at both ends of the second frame, and the two ends of the charging member are rotatably supported on the first bearing plate and the second bearing plate.

[0024] By adopting the above technical solution, the charging component can be stably supported on the bearing plate of the second frame, which helps to improve the stability of the processing box.

[0025] Optionally, the movable component further includes a movable bracket connected to the movable support portion, and the movable contact portion is configured as a rolling element, which is rotatably connected to the movable bracket and can move along the surface of the first frame.

[0026] By adopting the above technical solution, the rolling element can further reduce the friction between the moving contact part and the surface of the first frame, reduce the wear of both, help improve their reliability, and ensure the imaging quality of the processing box.

[0027] Optionally, the second unit can move between a developing position where the developing roller can deposit developer from the developing roller onto the photosensitive drum and a separating position where at least a portion of the developing roller is separated from the photosensitive drum;

[0028] The processing box also includes:

[0029] The contact force receiving section is capable of receiving contact force to move the second unit from the separation position to the developing position when the second unit is in the separation position;

[0030] The separating force receiving section is capable of receiving a separating force used to move the second unit from the developing position to the separating position when the second unit is in the developing position.

[0031] By setting a force receiver on the processing cartridge to receive contact and separation forces, the developing roller can be kept separate from the photosensitive drum when the processing cartridge does not need to perform printing tasks. This avoids deformation of the outer surface of the developing roller caused by prolonged contact between the developing roller and the photosensitive drum, helps to improve the stability of the developing roller, and ensures image quality.

[0032] Optionally, the processing cartridge further includes a retainer, which includes a contact force receiving portion. The retainer is movably supported by the first unit or the second unit and is movable between a first position for stably holding the second unit in a separating position by the first unit and a second position for stably holding the second unit in a developing position by the first unit.

[0033] By adopting the above technical solution, even if the external separating force is removed, the retaining member can still stably hold the second unit in the separating position, which can reduce the contact time between the developing roller and the photosensitive drum when not printing, and help to improve the service life of the developing roller and the charging roller.

[0034] Optionally, the contact force receiving part and the separation force receiving part are separately arranged, with the contact force receiving part being movably supported by the first unit or the second unit, and the separation force receiving part being arranged on the second frame.

[0035] By adopting the above technical solutions, the space of the processing box can be made reasonable, which helps to improve the compactness of the overall structure of the processing box. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the processing box provided in Embodiment 1 of this application;

[0037] Figure 2 This is a schematic diagram of the processing box from another angle, as provided in Embodiment 1 of this application;

[0038] Figure 3 This is an exploded structural diagram of the processing box provided in Embodiment 1 of this application;

[0039] Figure 4 This is an exploded structural diagram of the first unit provided in Embodiment 1 of this application;

[0040] Figure 5 This is an exploded structural diagram of the second unit provided in Embodiment 1 of this application;

[0041] Figure 6 This is a schematic diagram of the structure of the first end of the processing box provided in Embodiment 1 of this application;

[0042] Figure 7 This is a schematic diagram of the structure of the second end of the processing box provided in Embodiment 1 of this application;

[0043] Figure 8 This is a schematic diagram of the structure of the first end of the processing box provided in Embodiment 1 of this application;

[0044] Figure 9 This is a schematic diagram of the processing box provided in Embodiment 2 of this application;

[0045] Figure 10 This is a schematic diagram of the processing box structure from another angle, provided in Embodiment 2 of this application;

[0046] Figure 11 This is a schematic diagram of the processing box provided in Embodiment 3 of this application;

[0047] Figure 12This is a schematic diagram of the structure of the moving component, charging component, and bearing plate provided in Embodiment 3 of this application;

[0048] Figure 13 This is an exploded structural diagram of the mobile component, charging component, and bearing plate provided in Embodiment 3 of this application;

[0049] Figure 14 This is a schematic diagram of the structure of the moving component provided in Embodiment 3 of this application;

[0050] Figure 15 This is a schematic diagram of the structure of another moving component provided in Embodiment 3 of this application;

[0051] Figure 16 This is a schematic diagram of the structure of the second unit at the developing position provided in Embodiment 3 of this application;

[0052] Figure 17 This is a schematic diagram of the structure of the second unit at the separation position provided in Embodiment 3 of this application. Detailed Implementation

[0053] Example 1

[0054] To make the objectives, technical solutions, and technical effects of the embodiments of this application clearer, the technical solutions of the processing box of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely preferred embodiments of this application, and not all embodiments. Other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are all within the protection scope of this application.

[0055] To facilitate the description of the processing box 100 in this application, the various directions of the processing box 100 will be defined below, such as... Figures 1 to 8 As shown, the extension direction of the photosensitive drum 12 is the first direction. In the first direction, the processing cartridge 100 has a first end 101 and a second end 102 opposite to each other, and the coupling member 25 is arranged at the first end 101 of the processing cartridge 100. The second direction intersects the first direction. In the second direction, the processing cartridge 100 has a third end 103 and a fourth end 104 opposite to each other. The chip electrical contact surface 311 is arranged at the third end 103 of the processing cartridge 100, and the photosensitive drum 12 is arranged at the fourth end 104 of the processing cartridge 100. The third direction intersects the first direction and the second direction. In the third direction, the processing cartridge 100 has a fifth end 105 and a sixth end 106 opposite to each other. The developing roller 23 is closer to the fifth end 105 of the processing cartridge 100 than the photosensitive drum 12.

[0056] like Figures 1 to 3As shown, this application discloses a processing box 100, which is detachably installed into an imaging device (not shown) having a power supply component, electrical contacts, a driving force application component, and a pushing component. In this application, the imaging device is an electrophotographic imaging device (i.e., a printer). The specific functions of the power supply component, electrical contacts, driving force application component, and pushing component of the imaging device will be described below in conjunction with the structure of the processing box 100.

[0057] like Figures 1 to 3 As shown, the processing cartridge 100 includes a first unit 10 and a second unit 20 detachably connected to each other. The first unit 10 includes a first housing 11 and a photosensitive drum 12 rotatably supported on the first housing 11; the first unit 10 is also referred to as a photosensitive drum unit or drum unit. The second unit 20 includes a second housing 21, a charging member 22, and a developing roller 23 rotatably supported on the second housing 21; the second unit 20 is also referred to as a developing unit. The first housing 11 and the second housing 21 are separate components, with the second housing 21 detachably connected to the first housing 11. The combined first housing 11 and the second housing 21 can be referred to as a housing. The first housing 11 is also referred to as a photosensitive drum frame, drum frame, or first frame; the second housing 21 is also referred to as a developing frame or second frame.

[0058] like Figure 1 , Figure 2 and Figure 4 As shown, the first housing 11 includes a first cover 111 disposed at a first end 101, a second cover 112 disposed at a second end 102, and a first main body portion 113 located at least a portion between the first cover 111 and the second cover 112. The first cover 111, the second cover 112, and the first main body portion 113 can be disposed separately, or at least one of the first cover 111 and the second cover 112 can be integrally formed with the first main body portion 113 to reduce the number of production molds, lower production costs, and improve assembly efficiency. The photosensitive drum 12 is rotatable about a photosensitive drum axis M1 extending along a first direction. Optionally, the photosensitive drum 12 is configured such that one end is rotatably supported on the first cover 111 and the other end is rotatably supported on the second cover 112.

[0059] like Figures 1 to 3 and Figure 5As shown, the second housing 21 can contain developer, and the developing roller 23 is rotatably supported between the first end 101 and the second end 102 of the second housing 21. Specifically, the second housing 21 includes a first bearing plate 211 disposed at the first end 101, a second bearing plate 212 disposed at the second end 102, and a second main body portion 213 located at least a portion between the first bearing plate 211 and the second bearing plate 212. The first bearing plate 211, the second bearing plate 212, and the second main body portion 213 can be separately disposed, or at least one of the first bearing plate 211 and the second bearing plate 212 can be integrally formed with the second main body portion 213 to reduce the number of production molds, reduce production costs, and improve assembly efficiency. The developing roller 23 can rotate about a developing roller axis M2 extending along a first direction. Optionally, the developing roller 23 is configured such that one end is rotatably supported on the first bearing plate 211 and the other end is rotatably supported on the second bearing plate 212. The charging component 22 is disposed between the first bearing plate 211 and the second bearing plate 212. Optionally, one end of the charging component 22 is connected to the first bearing plate 211 and the other end of the charging component 22 is connected to the second bearing plate 212.

[0060] When the first unit 10 is connected to the second unit 20, viewed along the first direction, at least a portion of the projection of the first bearing plate 211 along the first direction coincides with the first housing 11, and at least a portion of the projection of the second bearing plate 212 along the first direction coincides with the first housing 11. At this time, the charging component 22 is in contact with the photosensitive drum 12. The first bearing plate 211 and the second bearing plate 212 supporting the charging component 22 need to extend into the first main body 113 of the first unit 10. To avoid interference between the first bearing plate 211 and the second bearing plate 212 and the first main body 113 during installation, the first end 101 of the first main body 113 is provided with a first clearance portion 1131 that avoids the first bearing plate 211, and the second end 102 of the first main body 113 is provided with a second clearance portion 1132 that avoids the second bearing plate 212. In the state where the first unit 10 and the second unit 20 are connected, the first cover 111, the first bearing plate 211, the second bearing plate 212, and the second cover 112 are arranged sequentially in the first direction.

[0061] The charging component 22 can charge the photosensitive drum 12, causing the surface of the photosensitive drum 12 to carry a uniform charge. The charging component 22 can be configured as a charging roller 221, corona wire, cleaning scraper, sealing component, sponge, brush, etc. Preferably, the charging component 22 is configured as a charging roller 221. The following description uses the charging roller 221 as an example. It should be noted that those skilled in the art can select other equivalent charging structures according to actual needs, and the following description using the charging roller 221 as an example should not be construed as a limitation on the scope of protection.

[0062] The charging roller 221 is rotatable about the axis M3 of the charging component extending in the first direction. Specifically, the charging roller 221 can be configured such that one end is supported on the first bearing plate 211 and the other end is supported on the second bearing plate 212. The processing box also includes a connecting portion 2212 and a first elastic member 2213, wherein the connecting portion 2212 is movably connected to the second housing 21, and one end of the first elastic member 2213 abuts against the connecting portion 2212 and the other end abuts against the second housing 21. The connecting portion 2212 is engaged with at least one end of the charging roller 221. Preferably, two connecting portions 2212 are engaged with both ends of the charging roller 221, and the two connecting portions 2212 are movably connected to the first bearing plate 211 and the second bearing plate 212, respectively, so that the charging roller 221 is movably connected to the second housing 21. When the first unit 10 is connected to the second unit 20, the charging roller 221 contacts the surface of the photosensitive drum 12, and the first elastic member 2213 biases the charging roller 221 toward the photosensitive drum 12 to ensure the stability of the contact between the two.

[0063] like Figures 1 to 4 As shown, the processing cartridge 100 also includes a chip holder 30 and a chip 31 mounted on the chip holder 30. The chip 31 includes a chip electrical contact surface 311. The chip holder 30 is detachably mounted on the housing. Optionally, the chip holder 30 is detachably mounted on the first cover 111 of the first unit 10 or on the first main body 113. Optionally, in the second direction, at least a portion of the charging roller 221 is closer to the third end 103 of the processing cartridge 100 than the developing roller 23, and at least a portion of the charging roller 221 is closer to the chip electrical contact surface 311 than the developing roller 23 and the photosensitive drum 12. Optionally, in the second direction, the charging member axis M3 is closer to the chip electrical contact surface 311 than the developing roller axis M2. Optionally, the chip electrical contact surface 311, the charging member axis M3, and the photosensitive drum axis M1 are arranged sequentially in the second direction. Optionally, the chip electrical contact surface 311, the charging member axis M3, the developing roller axis M2, and the photosensitive drum axis M1 are arranged sequentially in the second direction.

[0064] Optionally, such as Figure 1 , Figure 5 and Figure 6 As shown, the second unit 20 also includes a powder feeding roller 24, which is rotatable about a powder feeding roller axis M4 extending in a first direction. In a second direction, at least a portion of the charging roller 221 is closer to the third end 103 of the processing box 100 than the powder feeding roller 24, and at least a portion of the charging roller 221 is closer to the chip electrical contact surface 311 than the powder feeding roller 24 and the photosensitive drum 12. Optionally, in the second direction, the charging component axis M3 is closer to the chip electrical contact surface 311 than the powder feeding roller axis M4, and the chip electrical contact surface 311, the charging component axis M3, and the powder feeding roller axis M4 are arranged sequentially in the second direction.

[0065] Optionally, such as Figure 6 As shown, in the third direction, at least a portion of the charging roller 221 is closer to the sixth end 106 of the processing cartridge 100 than the developing roller 23, and the charging component axis M3 is closer to the sixth end 106 of the processing cartridge 100 than the developing roller axis M2. Optionally, in the third direction, the charging component axis M3, the photosensitive drum axis M1, and the developing roller axis M2 are arranged sequentially.

[0066] Optionally, such as Figure 6 As shown, in the third direction, at least a portion of the charging roller 221 is closer to the sixth end 106 of the processing cartridge 100 than the powder feeding roller 24, and the charging component axis M3 is closer to the sixth end 106 of the processing cartridge 100 than the powder feeding roller axis M4. Optionally, in the third direction, the charging component axis M4, the photosensitive drum axis M1, the developing roller axis M2, and the powder feeding roller axis M4 are arranged sequentially.

[0067] When the processing cartridge 100 performs a printing operation, the developing roller 23 carries the developer, and the charging roller 221 can uniformly charge the photosensitive drum 12. After the charged photosensitive drum 12 is selectively irradiated by the laser in the imaging device, an electrostatic latent image can be formed on the outer surface of the photosensitive drum 12. The developing roller 23 can transport the developer carried on the developing roller 23 to the photosensitive drum 12 through contact with the photosensitive drum 12 to develop the electrostatic latent image on it and form a developer image on the photosensitive drum 12. Subsequently, the developer image can be transferred to the transfer belt of the imaging device through contact between the photosensitive drum 12 and the transfer belt. Finally, the transfer belt can transfer the developer image to the recording medium (such as paper).

[0068] like Figure 1 , Figure 3 and Figure 5As shown, the processing box 100 also includes a coupling member 25. The coupling member 25 is disposed at the first end 101 of the housing in a first direction. The first cover 111 can cover at least a portion of the coupling member 25 to position the coupling member 25. The coupling member 25 can be coupled with the driving force application component of the imaging device to receive the rotational driving force output by it and rotate. In this way, the coupling member 25 can drive the developing roller 23 and the photosensitive drum 12 to rotate. Specifically, the coupling member 25 includes a first coupling member 251 and a second coupling member 252. The first coupling member 251 includes a first driving force receiving part 2511 and a first gear part 2512 connected to the first driving force receiving part 2511. The end of the developing roller 23 near the first end 101 of the processing box 100 is provided with a developing roller gear 231, and the end of the powder feeding roller 24 near the first end 101 of the processing box 100 is provided with a powder feeding roller gear 241. The developing roller gear 231 can rotate with the rotation of the first gear part 2512, thereby driving the developing roller 23 to rotate around the developing roller axis M2 extending in the first direction. The powder feeding roller gear 241 can rotate with the rotation of the first gear part 2512, thereby driving the powder feeding roller 24 to rotate along the powder feeding roller axis M4 extending in the first direction. Optionally, the developing roller gear 231 and the powder feeding roller gear 241 are both meshed with the first gear section 2512, and the first gear section 2512 can directly drive the developing roller gear 231 and the powder feeding roller gear 241 to rotate when it rotates.

[0069] The first coupling member 251 can be coupled to the first driving force applying member of the imaging device and can rotate by receiving the driving force output therefrom, thereby driving the developing roller 23 to rotate. The second coupling member 252 can be coupled to the second driving force applying member of the imaging device and can rotate by receiving the driving force output therefrom, thereby driving the photosensitive drum 12 to rotate. Optionally, the first coupling member 251 can be configured to receive the driving force of the imaging device to drive the developing roller 23 and the photosensitive drum 12 to rotate, or the second coupling member 252 can be configured to receive the driving force of the imaging device to drive the developing roller 23 and the photosensitive drum 12 to rotate. Viewed along the first direction, in the second direction, the charging roller 221 is closer to the third end 103 of the processing cartridge 100 than the second coupling member 252, and in the third direction, the charging roller 221 is closer to the sixth end 106 of the processing cartridge 100 than the first coupling member 251.

[0070] Optionally, such as Figure 1 and Figure 5 As shown, the second unit 20 also includes a bearing cover 214, which is fixedly connected to the first end 101 of the second housing 21. Specifically, the bearing cover 214 is fixedly connected to the first bearing plate 211. In the first direction, the bearing cover 214 is located between the first bearing plate 211 and the first cover 111. The bearing cover 214 can cover at least a portion of the first coupling member 251 to position the first coupling member 251. Optionally, the charging member 22 can be connected to both ends of the bearing cover 214.

[0071] like Figure 5 As shown, the second unit 20 also includes a powder discharge blade 26, which is used to adjust the thickness of the developer on the developing roller 23. Figure 2 and Figure 7 As shown, the processing box 100 also includes a first electrode 13 disposed on the second cover 112 of the first housing 11 and a second electrode 27 disposed on the second bearing plate 212 of the second housing 21. In a first direction, the first electrode 13 and the second electrode 27 are located at the second end 102 of the housing. One end of the first electrode 13 has a first electrical contact surface 131 that can make electrical contact with the power supply component of the imaging device, and the other end of the first electrode 13 makes electrical contact with the charging roller 221. The first electrode 13 is configured to receive power from the imaging device and transfer the power to the charging roller 221, thereby enabling the charging roller 221 to charge the photosensitive drum 12. Specifically, both the connecting portion 2212 and the first elastic member 2213 are conductive. The first elastic member 2213 is electrically connected to the first electrical contact surface 131, and the connecting portion 2212 is electrically connected to the first elastic member 2213. The power of the imaging device is transferred from the first electrical contact surface 131 to the first elastic member 2213, then from the first elastic member 2213 to the connecting portion 2212, and then from the connecting portion 2212 to the charging roller 221. Finally, the charging roller 221 transfers the power to the photosensitive drum 12 that is in contact with the charging roller 221. Here, the first electrical contact surface 131 is the portion of the first electrode 13 that contacts the power supply component of the imaging device. In the second direction, the first electrical contact surface 131 is closer to the third end 103 of the housing than the axis M3 of the charging member, and the first electrical contact surface 131 is closer to the chip electrical contact surface 311 than the axis M3 of the charging member. Optionally, as shown... Figure 7 As shown, in the second direction, the chip electrical contact surface 311, the first electrical contact surface 131, and the charging component axis M3 are arranged sequentially. Optionally, in the second direction, the chip electrical contact surface 311, the first electrical contact surface 131, the charging component axis M3, and the photosensitive drum axis M1 are arranged sequentially. One end of the second electrode 27 has a second electrical contact surface 271 that can electrically contact the power supply component of the imaging device, and the other end of the second electrode 27 is electrically connected to at least one of the developing roller 23, the powder feeding roller 24, and the powder exiting blade 26. The second electrode 27 is configured to receive power from the imaging device and transmit that power to at least one of the developing roller 23, the powder feeding roller 24, and the powder exiting blade 26. Here, the second electrical contact surface 271 is the portion of the second electrode 27 that contacts the power supply component of the imaging device.

[0072] like Figure 1 , Figure 3 and Figure 8As shown, in order to avoid deformation of the outer surface of the developing roller 23 due to prolonged contact between the developing roller 23 and the photosensitive drum 12, which would lead to image degradation, the developing roller 23 and the photosensitive drum 12 should be kept separated as much as possible when the processing cartridge 100 does not need to perform a printing task. For this purpose, the processing cartridge 100 also includes a first force receiving member (holding member), a second force receiving member, and a holding part 291 for keeping the developing roller 23 and the photosensitive drum 12 stably separated. In some embodiments, the first force receiving member and the second force receiving member can be integrally formed. After the first force receiving member and the second force receiving member are integrally formed, they can be referred to as force receiving members. In the first direction, the force receiving member is located at the first end 101 of the processing cartridge 100, and in the second direction, the force receiving member is located at the fourth end 104 of the processing cartridge 100. The first force receiver includes a contact force receiver 28, and the second force receiver includes a separating force receiver 29. In a first direction, the contact force receiver 28 and the separating force receiver 29 are located at the first end 101 and / or the second end 102 of the housing; in a second direction, the contact force receiver 28 and the separating force receiver 29 are located at the fourth end 104 of the housing; viewed along the first direction from the first end 101 toward the second end 102 of the housing, the contact force receiver 28 is closer to the photosensitive drum axis M1 than the separating force receiver 29; when the second unit 20 is in the developing position (the developing position is when the second unit 20 is in contact with the developing roller 23 and the photosensitive drum 12), When the processing cartridge 100 does not need to perform a printing task, the separating force receiving unit 29 is configured to receive a first pushing force from the pushing member of the imaging device, causing the second unit 20 to move from the developing position to the separating position (the separating position is when the second unit 20 is at least partially separated from the developing roller 23 and the photosensitive drum 12). During the movement of the second unit 20, the holding part 291 is movable and stably abuts between the first housing 11 and the second housing 21 (the holding part 291 is in the first position). Even if the first pushing force is subsequently removed from the separating force receiving unit 29, the separation of the developing roller 23 and the photosensitive drum 12 can be stably maintained by the holding part 291. When the second unit 20 is in the separating position and the processing cartridge 100 needs to perform a printing task, the contact force receiving unit 28 is configured to receive a second pushing force from the pushing member of the imaging device, and the holding part 291 disengages from the abutment of the first housing 11 (the holding part 291 is in the second position), causing the second unit 20 to move from the separating position to the developing position.In some embodiments, the contact force receiving portion 28 and the separating force receiving portion 29 are separately provided. Optionally, the contact force receiving portion 28 and the holding portion 291 are integrally formed. The contact force receiving portion 28 is movably supported by the first unit 10 or the second unit 20, and the separating force receiving portion 29 is provided on the second housing 21. That is, the first force receiving member includes the holding portion 291, the first force receiving member is movably supported by the first unit 10 or the second unit 20, and is movable between a first position for stably holding the second unit 20 in a separating position by the first unit 10 and a second position for stably holding the second unit 20 in a developing position by the first unit 10. Optionally, the separating force receiving portion 29 is connected to the bearing cover 214, or the separating force receiving portion 29 is integrally formed with the bearing cover 214. The separating force receiving portion 29 is configured as a protrusion of the bearing cover 214 protruding towards the fourth end 104 of the housing. Optionally, the surface of the separating force receiving portion 29 that contacts the imaging device is disposed downward.

[0073] like Figures 6 to 8 As shown, in the second direction, the charging component axis M3 is closer to the third end 103 of the housing than the contact force receiving part 28 and the separating force receiving part 29, and the charging component axis M3 is closer to the chip electrical contact surface 311 than the contact force receiving part 28 and the separating force receiving part 29. Further, a first straight line L1 is drawn connecting the photosensitive drum axis M1 and the charging component axis M3. The first straight line L1 intersects the surface of the photosensitive drum 12 at two points, one of which is close to the charging roller 221 and the other is far from the charging roller 221. A first tangent L2 is drawn through the intersection point far from the charging roller 221 of the two intersection points. The first tangent L2 divides the processing box 100 into a first part 107 and a second part 108. The photosensitive drum axis M1 and the charging component axis M3 are located in the first part 107 of the processing box 100. When the second unit 20 is in the separated position, at least a portion of the contact force receiving part 28 and / or the separating force receiving part 29 is located in the second part 108. This reduces interference between the contact force receiving section 28 and the separation force receiving section 29 and the photosensitive drum 12.

[0074] Furthermore, since the second unit 20 also includes other components such as the powder dispensing blade 26, in order to avoid interference between the charging roller 221 and the powder dispensing blade 26 or other components in the second unit 20 during the assembly of the processing box 100, which would lead to assembly failure, and to avoid interference between the charging roller 221 and the powder dispensing blade 26 or other components in the second unit 20 during use, the diameter D of the charging roller 221 should be appropriate. Preferably, 4mm ≤ D ≤ 10mm, more preferably, 6mm ≤ D ≤ 8.5mm.

[0075] In this embodiment, by separately setting the photosensitive drum 12 on the first unit 10 and setting the charging component 22 on the second unit 20 where the developing roller 23 is located, the structure of the first unit 10 (photosensitive drum unit) can be simplified and the complexity of the first unit 10 (photosensitive drum unit) can be reduced.

[0076] Example 2

[0077] like Figure 9 and Figure 10 As shown, Embodiment 2 of this utility model will be introduced next. Embodiment 2 discloses a processing box 200. The similarities between the processing box 200 and the processing box in Embodiment 1 will not be repeated in this embodiment. The difference is that the chip electrical contact surface 311 and the first electrical contact surface 131 of the processing box 200 are both arranged at the second end of the processing box 200. That is, in the first direction, the chip electrical contact surface 311, the first electrical contact surface 131 and the coupling member 25 are located at different ends of the housing, and in the first direction, the chip electrical contact surface 311 is farther away from the first end of the processing box 200 than the first electrical contact surface 131. In the second direction, the chip electrical contact surface 311 and the first electrical contact surface 131 face the top end (third end) of the processing box 200. In the third direction, the chip electrical contact surface 311 is closer to the front end (fifth end) of the processing box 200 than the first electrical contact surface 131. Observing from the first end of the housing towards the second end along the first direction, in the third direction, the contact force receiving part 28 is farther away from the photosensitive drum axis M1 than the separating force receiving part 29.

[0078] Example 3

[0079] like Figures 11 to 17 As shown, Embodiment 3 of this utility model will be introduced next. Embodiment 3 discloses a processing box 300. The processing box 300 is the same as the processing box in Embodiments 1-2, and will not be repeated in this embodiment. The difference is that this application also includes a movable component 40 connected to the charging component 22. Figures 11 to 13 As shown, the processing box 300 is typically provided with two moving components 40, one of which is located at the first end 101 of the processing box 300 and the other is located at the second end 102 of the processing box 300. The movement and function of the two moving components 40 are roughly the same. For ease of description, the moving component 40 located at the second end 102 will be used as an example for the following explanation.

[0080] The movable component 40 includes a movable support portion 41 and a movable contact portion 42 connected to the movable support portion 41. The movable support portion 41 is the main body of the movable component 40 and is used to support both ends of the charging member 22. One end of the movable support portion 41 is connected to a first elastic member 2213, which is disposed between the movable component 40 and the charging roller 221. The first elastic member 2213 is configured such that the movable support portion 41 is biased in a direction away from the charging roller 221. The other end of the movable support portion 41 is connected to the movable contact portion 42. Specifically, the movable support portion 41 has a first movable end portion 411 and a second movable end portion 412 disposed opposite to each other. The movable contact portion 42 is connected to the first movable end portion 411, and the first elastic member 2213 abuts against the second movable end portion 412. The movable support part 41 is movably connected to the second bearing plate 212, and the movable support part 41 can move relative to the second bearing plate 212. Specifically, the movable support part 41 is provided with a first guide part 413, and the second bearing plate 212 is provided with a second guide part 414 adapted to the first guide part 413. The first guide part 413 can be constructed as one of a guide groove and a guide protrusion, and the second guide part 414 can be constructed as the other of a guide groove and a guide protrusion. Preferably, the first guide part 413 is constructed as a guide groove, and the second guide part 414 is constructed as a guide protrusion. Here, the developing roller 23 and the charging roller 221 are respectively disposed on opposite sides of the rotation center of the second unit 20 relative to the first unit 10. When the second unit 20 moves from the developing position to the separating position, the end of the second unit 20 near the developing roller 23 moves away from the photosensitive drum 12, while the end of the second unit 20 near the charging roller 221 moves towards the photosensitive drum 12. Since the charging roller 221 is in contact with the photosensitive drum 12, the force driving the charging roller 221 to move towards the photosensitive drum 12 is transmitted to the first elastic member 2213, causing the first elastic member 2213 to drive the moving contact part 42 to move further away from the charging roller 221. In this way, by transmitting the clamping force of the driving charging roller 221 toward the photosensitive drum 12 to the first elastic member 2213, and converting this clamping force into the movement of the moving contact part 42 through the first elastic member 2213, the clamping force can be transmitted from the charging roller 221 to the moving assembly 40 in a timely manner. This reduces the risk that the clamping force would directly act on the charging roller 221, causing the charging roller 221 to press against the photosensitive drum 12, thus making it difficult for the second unit 20 to move from the developing position to the separating position. The process of the second unit 20 moving from the separating position to the developing position is the reverse of the process of the second unit 20 moving from the developing position to the separating position, and will not be described in detail here.

[0081] Optionally, the moving assembly 40 further includes a guide post 415, which passes through the second bearing plate 212 and is movable relative to the second bearing plate 212. Specifically, when the second unit 20 moves relative to the first unit 10 between the developing position and the separating position, the guide post 415 is movable relative to the second bearing plate 212. When the second unit 20 is in the developing position, the extension amount of the guide post 415 beyond the second bearing plate 212 is less than the extension amount of the guide post 415 beyond the second bearing plate 212 when the second unit 20 is in the separating position.

[0082] The movable contact portion 42 is the part of the movable assembly 40 that contacts the first housing 11. One end of the movable contact portion 42 is connected to the movable support portion 41, and the other end of the movable contact portion 42 movably abuts against the first housing 11. When the first unit 10 is connected to the second unit 20, the movable contact portion 42 is located in the area of ​​the second clearance portion 1132, and the first housing 11 is provided with a housing contact portion 1133 that contacts the movable contact portion 42. Optionally, the housing contact portion 1133 is constructed as the surface of the second clearance portion 1132. Optionally, in order to reduce the friction between the movable contact portion 42 and the housing contact portion 1133, reduce the wear between the movable contact portion 42 and the housing contact portion 1133, and reduce the risk of the second unit 20 getting stuck when moving between the developing position and the separating position, the portion of the movable contact portion 42 that contacts the housing contact portion 1133 is constructed as an arc-shaped structure or a sloped structure (e.g., Figure 14 As shown, the housing contact portion 1133 is constructed with a smoothly transitioned arcuate surface. When the second unit 20 moves relative to the first unit 10 between the developing position and the separating position, the movable contact portion 42 moves along the housing contact portion 1133. Optionally, the movable contact portion 42 is constructed as the end of the guide post 415 that contacts the housing contact portion 1133. Optionally, the movable contact portion 42 is provided at the first movable end 411 of the movable support portion 41.

[0083] like Figures 11 to 13 As shown, in order to further reduce the friction between the moving contact portion 42 and the housing contact portion 1133, the moving contact portion 42 is constructed as a rolling element, for example, a roller 421 (such as...). Figures 11 to 13The housing contact portion 1133 is configured with an arcuate surface adapted to the surface of the roller 421. The moving assembly 40 also includes a moving bracket 43 supporting the roller 421. Specifically, the moving bracket 43 is disposed at the first moving end 411 of the moving support portion 41, and the first moving end 411 is configured as the moving bracket 43, on which the roller 421 is rotatably supported. The first elastic member 2213 is configured such that the moving bracket 43 and the roller 421 are biased toward the housing contact portion 1133. When the second unit 20 moves relative to the first unit 10 between the developing position and the separating position, the roller 421 rolls along the housing contact portion 1133, wherein the distance between the roller 421 and the charging roller 221 when the second unit 20 is in the developing position is less than the distance between the roller 421 and the charging roller 221 when the second unit 20 is in the separating position. Optionally, when the second unit 20 moves relative to the first unit 10 between the developing position and the separating position, the roller 421 can move relative to the second bearing plate 212 between a position close to the second bearing plate 212 and a position far away from the second bearing plate 212. Here, the developing roller 23 and the charging roller 221 are respectively disposed on opposite sides of the rotation center of the second unit 20 relative to the first unit 10. When the second unit 20 moves from the developing position to the separating position, the end of the second unit 20 close to the developing roller 23 moves away from the photosensitive drum 12, while the end of the second unit 20 close to the charging roller 221 moves closer to the photosensitive drum 12. Since the charging roller 221 is in contact with the photosensitive drum 12, the force driving the charging roller 221 to move towards the photosensitive drum 12 is transmitted to the first elastic member 2213, causing the first elastic member 2213 to drive the moving bracket 43 to move further away from the charging roller 221. The moving bracket 43 drives the roller 421 to extend further out of the second bearing plate 212. In this way, by transmitting the clamping force of the driving charging roller 221 toward the photosensitive drum 12 to the first elastic member 2213, and converting this clamping force into movement of the moving bracket 43 and roller 421 through the first elastic member 2213, the clamping force can be promptly transmitted from the charging roller 221 to the moving assembly 40. This reduces the risk that the clamping force would directly act on the charging roller 221, causing the charging roller 221 to press against the photosensitive drum 12, making it difficult for the second unit 20 to move from the developing position to the separating position. The process of the second unit 20 moving from the separating position to the developing position is the reverse of the process of the second unit 20 moving from the developing position to the separating position, and will not be described in detail here.

[0084] Optionally, such as Figure 15As shown, the movable contact portion 42 is configured as a ball bearing 422, which is rotatably supported on the movable support 43. The housing contact portion 1133 is configured as an arcuate surface adapted to the surface of the ball bearing 422. The first elastic member 2213 is configured such that the movable support 43 and the ball bearing 422 are biased toward the housing contact portion 1133. When the second unit 20 moves relative to the first unit 10 between the developing position and the separating position, the ball bearing 422 rolls along the housing contact portion 1133, wherein the distance between the ball bearing 422 and the charging roller 221 when the second unit 20 is in the developing position is smaller than the distance between the ball bearing 422 and the charging roller 221 when the second unit 20 is in the separating position. Optionally, when the second unit 20 moves relative to the first unit 10 between the developing position and the separating position, the ball bearing 422 can move relative to the second bearing plate 212 between a position close to the second bearing plate 212 and a position away from the second bearing plate 212. Here, the developing roller 23 and the charging roller 221 are respectively located on opposite sides of the rotation center of the second unit 20 relative to the first unit 10. When the second unit 20 moves from the developing position to the separating position, the end of the second unit 20 near the developing roller 23 moves away from the photosensitive drum 12, while the end of the second unit 20 near the charging roller 221 moves towards the photosensitive drum 12. Since the charging roller 221 is in contact with the photosensitive drum 12, the pressing force that drives the charging roller 221 to move towards the photosensitive drum 12 is transmitted to the first elastic member 2213, causing the first elastic member 2213 to drive the moving bracket 43 to move further away from the charging roller 221. The moving bracket 43 drives the ball bearing 422 to extend further out of the second bearing plate 212. In this way, by transmitting the clamping force of the driving charging roller 221 toward the photosensitive drum 12 to the first elastic member 2213, and converting this clamping force into the movement of the moving bracket 43 and the ball bearing 422 through the first elastic member 2213, the clamping force can be transmitted from the charging roller 221 to the moving assembly 40 in a timely manner. This reduces the risk that the clamping force would directly act on the charging roller 221, causing the charging roller 221 to press against the photosensitive drum 12, making it difficult for the second unit 20 to move from the developing position to the separating position. The process of the second unit 20 moving from the separating position to the developing position is the reverse of the process of the second unit 20 moving from the developing position to the separating position, and will not be described in detail here.

[0085] In some alternative implementations, the pressing force that drives the charging roller 221 to move toward the photosensitive drum 12 can be directly converted into a force that drives the moving contact part 42 to extend further out of the second bearing plate 212 by reasonably configuring the length of the first elastic element 2213 and the distance of the moving contact part 42 extending out of the second bearing plate 212, thereby achieving the purpose of avoiding jamming when the second unit 20 moves between the developing position and the separating position.

[0086] In some alternative implementations, the housing contact portion 1133 may be disposed on a contact member independent of the first housing 11. This contact member is made of a material with a low coefficient of friction and is connected to the first housing 11 to reduce the frictional force of the housing contact portion 1133 on the moving contact portion 42, thereby facilitating the smooth movement of the second unit 20 between the developing position and the separating position.

[0087] In this embodiment, by transmitting the clamping force of the driving charging roller 221 toward the photosensitive drum 12 to the first elastic member 2213, and by converting the clamping force into the movement of the moving contact part 42 through the first elastic member 2213, the clamping force can be transmitted from the charging roller 221 to the moving component 40 in a timely manner. This reduces the risk that the clamping force will directly act on the charging roller 221, causing the charging roller 221 to press against the photosensitive drum 12, which would make it difficult for the second unit 20 to move from the developing position to the separating position. This helps the second unit 20 to move smoothly between the developing position and the separating position.

[0088] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A processing box, comprising: Photosensitive drum; The first unit includes the photosensitive drum; A developing roller, used to deposit developer onto the photosensitive drum; The second unit includes the developing roller; The first unit is characterized in that it includes the photosensitive drum and the first frame, and the photosensitive drum can be rotatably supported by the first frame; The second unit includes a charging component and a second frame. The charging component is used to charge the photosensitive drum, and both the charging component and the developing roller are supported by the second frame.

2. The process cartridge according to claim 1, wherein, The processing box further includes a movable component and a first elastic member. The movable component is movably connected to the second frame and one end abuts against the first frame. The first elastic member is disposed between the movable component and the charging component. The first elastic member is configured to bias the movable component toward a direction away from the charging component.

3. The process cartridge of claim 2 wherein, The movable component includes a movable support and a movable contact portion connected at one end to the movable support. The movable support is movably connected to the second frame, and the other end of the movable contact portion abuts against the first frame. The first elastic element can provide a biasing force for the movable support relative to the second frame, and the movable contact can follow the movable support along the surface of the first frame.

4. The process cartridge of claim 3 wherein, The first frame includes a housing contact portion, and the movable contact portion movably abuts against the housing contact portion; The housing contact portion is constructed with an arc-shaped surface, and the portion of the movable contact portion that contacts the housing contact portion is constructed with an arc-shaped structure.

5. The process cartridge according to any one of claims 3-4, wherein, The second frame includes a bearing plate, and the moving assembly further includes a guide post connected to the bearing plate. The guide post is movable relative to the bearing plate under the biasing force provided by the first elastic element, and the end of the guide post moves along the surface of the first frame. The moving contact portion is configured as the end of the guide post that contacts the first frame.

6. The process cartridge of claim 5 wherein, The bearing plate includes a first bearing plate and a second bearing plate. In the first direction of extension of the photosensitive drum, the first bearing plate and the second bearing plate are respectively disposed at both ends of the second frame. The two ends of the charging member are rotatably supported on the first bearing plate and the second bearing plate.

7. The process cartridge of claim 3 wherein, The movable component further includes a movable bracket connected to the movable support portion. The movable contact portion is configured as a rolling element, which is rotatably connected to the movable bracket and can move along the surface of the first frame.

8. The process cartridge of claim 1, wherein, The second unit is movable between a developing position where the developing roller can deposit developer from the developing roller onto the photosensitive drum and a separation position where at least a portion of the developing roller is separated from the photosensitive drum; The processing box also includes: The contact force receiving section is capable of receiving a contact force for moving the second unit from the separation position to the developing position when the second unit is in the separation position; The separating force receiving section is capable of receiving a separating force for moving the second unit from the developing position to the separating position when the second unit is in the developing position.

9. The process cartridge of claim 8 wherein, The processing cartridge further includes a retainer comprising the contact force receiving portion, the retainer being movably supported by the first unit or the second unit, and being movable between a first position for stably holding the second unit at the separation position by means of the first unit and a second position for stably holding the second unit at the developing position by means of the first unit.

10. The process cartridge of claim 8 wherein, The contact force receiving part and the separation force receiving part are separately arranged. The contact force receiving part is movably supported by the first unit or the second unit, and the separation force receiving part is arranged on the second frame.

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