Processing cartridge

Abstract

The present invention relates to the technical field of imaging devices, and particularly to a processing cartridge. The processing cartridge includes a second force receiving portion having a plurality of position states. When in the first position state, there is a gap between the second force receiving portion and the second pushing portion; when in the second position state, the second force receiving portion abuts against the second pushing portion; when the processing cartridge performs drum separation, the second force receiving portion is in the second position state. The second force receiving portion in the processing cartridge provided by the present invention has a plurality of position states, and when in the second position state, the second force receiving portion abuts against the second pushing portion to achieve drum separation of the processing cartridge, thus solving the problem that there is a risk that the force receiving device of the existing processing cartridge cannot pop out, thereby affecting drum separation.

Description

Technical Field

[0001] The present invention relates to the field of electrophotographic imaging technology, and particularly to a processing cartridge. Background Art

[0002] An electrophotographic imaging apparatus is a device that forms an image on a recording material through electrophotographic imaging processing technology, such as: electrophotographic copiers, laser printers, electrophotographic printers, fax machines, word processors, etc. An electrophotographic imaging apparatus generally includes a monochromatic electrophotographic imaging apparatus and a color electrophotographic imaging apparatus.

[0003] An existing electrophotographic imaging apparatus includes a main body and a processing cartridge detachably installed in the main body. Side walls are provided at both ends of the processing cartridge along its length direction. The inside of the processing cartridge generally includes one or more rotating components, such as a photosensitive element, a developing element, a charging element, a powder feeding element, a gear component, etc. Among them, the rotating element can be connected to a power receiving component and receive a driving force from the power receiving component. The power receiving component is usually provided on one side wall of the processing cartridge and receives a driving force from the main body of the electrophotographic imaging apparatus.

[0004] When the processing cartridge does not perform electrophotographic imaging work, in order to protect the developing element and the photosensitive element, the two are usually separated, that is, the developing element and the photosensitive element do not contact each other when electrophotographic imaging is not performed.

[0005] In the prior art, there is a force receiving device that rotates along the axis parallel to the rotating component. The force receiving device receives power from the electrophotographic imaging apparatus to perform roller drum separation. However, once the installation position of the processing cartridge is unstable, or the force receiving device in the prior art is interfered by components in the printer, there is a risk that the force receiving device cannot pop out, thereby affecting roller drum separation, contaminating the electrophotographic imaging content, reducing the printing quality, and causing irreversible wear on the surface of the photosensitive drum.

[0006] Therefore, there is an urgent need for a new type of processing cartridge to solve the above problems. Summary of the Invention

[0007] The present invention provides a processing cartridge to solve the problem that the existing processing cartridge has a risk that the force receiving device cannot pop out, thereby affecting roller drum separation.

[0008] The present invention provides a processing cartridge, the processing cartridge is detachably installed in an electrophotographic imaging apparatus, the electrophotographic imaging apparatus includes a second pushing portion, and the processing cartridge includes:

[0009] A developing roller and a first housing supporting the developing roller;

[0010] A photosensitive drum and a second housing supporting the photosensitive drum;

[0011] It is characterized in that the processing cartridge further includes a second force receiving portion, the second force receiving portion having a plurality of position states. When in the first position state, there is a gap between the second force receiving portion and the second pushing portion; when in the second position state, the second force receiving portion abuts against the second pushing portion.

[0012] When the processing cartridge performs drum separation, the second force receiving portion is in the second position state.

[0013] Optionally, the processing cartridge further includes an elastic member, and the elastic member can keep the second force receiving portion in the first position state.

[0014] Optionally, the processing cartridge is provided with a support frame, the second force receiving portion is arranged on the support frame and can translate along the length direction of the processing cartridge.

[0015] Optionally, the support frame is provided with a groove, the second force receiving portion is provided with a limiting portion, and the limiting portion is movably arranged in the groove.

[0016] Optionally, the processing cartridge further includes a first force receiving portion, and the electrophotographic apparatus further includes a first pushing portion. The first force receiving portion can abut against the first pushing portion so that the first force receiving portion can push the second force receiving portion to move along the length direction of the processing cartridge.

[0017] Optionally, the first force receiving portion is provided with a pushing block arranged in a triangular shape, and the second force receiving portion is provided with a receiving block arranged in a triangular shape. The pushing block can abut against the receiving block so that the second force receiving portion moves along the length direction of the processing cartridge.

[0018] Optionally, the first housing is provided with a support frame, and the second force receiving portion is rotatably arranged on the support frame.

[0019] Optionally, the support frame is provided with a support shaft, the second force receiving portion is provided with a hollow column, and the hollow column is sleeved outside the support shaft and enables the second force receiving portion to rotate relative to the support shaft.

[0020] Optionally, the support frame is further provided with a limiting block for restricting the rotation of the second force receiving portion, and the second force receiving portion is further provided with a second force receiving portion;

[0021] When the second force receiving portion is in the first position state, there is a gap between the second force receiving portion and the second pushing portion;

[0022] When the second force receiving portion is in the second position state, the second force receiving portion can be in contact with the second pushing portion.

[0023] Optionally, the processing cartridge further includes a first force receiving portion, and the electrophotographic imaging apparatus further includes a first pushing portion. The first force receiving portion can be in contact with the first pushing portion so that the first force receiving portion can push the second force receiving portion to rotate on the support frame.

[0024] Optionally, the first force receiving portion includes a buffer portion.

[0025] Optionally, the buffer portion is a U-shaped structure or an S-shaped structure.

[0026] Optionally, the first housing is further provided with an anti-disengagement portion. The anti-disengagement portion is located above the first force receiving portion, and at least a part of the projection of the anti-disengagement portion in the length direction of the processing cartridge coincides with the first force receiving portion.

[0027] The present invention provides a processing cartridge for an electrophotographic imaging apparatus. The electrophotographic imaging apparatus includes a first pushing portion and a second pushing portion. The processing cartridge includes:

[0028] A first housing including a developing roller;

[0029] A second housing including a photosensitive drum;

[0030] Characterized in that the processing cartridge further includes a second force receiving portion. The second force receiving portion has multiple states. When in the first position state, the second force receiving portion has a gap with the second pushing portion; when in the second position state, the second force receiving portion is in contact with the second pushing portion;

[0031] When the processing cartridge performs roller-drum separation, the second force receiving portion is in the second position state;

[0032] When in the first position and the second position, the height by which the second force receiving portion protrudes from the processing cartridge is higher than that of the first housing.

[0033] Optionally, the processing cartridge further includes an elastic member having a tendency to maintain the second force receiving portion in the first position.

[0034] Optionally, the processing cartridge further includes a first force receiving portion. The first force receiving portion can be in contact with the first pushing portion and push the second force receiving portion to the second position.

[0035] Optionally, the processing cartridge further includes a position-limiting block for restricting the movement of the second force receiving portion, and the first housing is provided with a anti-disengagement portion for preventing the second force receiving portion from disengaging.

[0036] After adopting the above technical solution, the beneficial effects are as follows:

[0037] The second force receiving portion in the processing cartridge provided by the present invention has multiple position states. When it is in the second position state, the second force receiving portion abuts against the second pushing portion to realize the separation of the roller drum of the processing cartridge. Thus, the problem that the existing processing cartridge has the risk that the force receiving device cannot pop out, thereby affecting the separation of the roller drum, is solved. Description of the Drawings

[0038] Figure 1 、 Figure 2 Schematic diagram of the electrophotographic apparatus accommodating the processing cartridge in Embodiment 1 and the positional relationship between the processing cartridge and the electrophotographic apparatus;

[0039] Figure 3 Stereoscopic view of the processing cartridge in Embodiment 1;

[0040] Figure 4 is Figure 3 Partial enlarged view of the right end;

[0041] Figure 5 、 Figure 6 Exploded view of the positional relationship between the second force receiving portion and the support frame in Embodiment 1;

[0042] Figure 7 Exploded view of the positional relationship between the first force receiving portion and the support frame in Embodiment 1;

[0043] Figure 8 、 Figure 9 Schematic diagram of the main working principle of the force receiving device of the processing cartridge in Embodiment 1;

[0044] Figure 10 、 Figure 11 Stereoscopic view of the processing cartridge observed along the installation direction of the processing cartridge in Embodiment 1;

[0045] Figure 12 Top view of the processing cartridge observed along a plane parallel to the installation direction of the processing cartridge in Embodiment 2;

[0046] Figure 13 is Figure 12 Exploded view of the positional relationship between the first force receiving portion and the support frame in

[0047] Figure 14 Schematic diagram of a working process of the force receiving device in Embodiment 2;

[0048] Figure 15 Another schematic diagram of the working process of the force receiving device in Embodiment 2;

[0049] Figure 16 Another schematic diagram of the working process of the force receiving device in Embodiment 2;

[0050] Figure 17 Another schematic diagram of the working process of the force receiving device in Embodiment 2;

[0051] Figure 18 Schematic diagram of the positional relationship between the third limiting block and the first force receiving part in Embodiment 2;

[0052] Figure 19 Schematic diagram of the structure of the processing cartridge in Embodiment 4;

[0053] Figure 20 Schematic diagram of the structures of the first force receiving part and the second force receiving part in Embodiment 4. Detailed implementation manners

[0054] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0055] In the description of the present invention, unless otherwise clearly specified and defined, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; unless otherwise specified or stated, the term "plurality" means two or more; the terms "connection", "fixation", etc. should all be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0056] In the description of this specification, it should be understood that the orientation terms such as "upper" and "lower" described in the embodiments of the present invention are described from the angles shown in the accompanying drawings and should not be understood as limiting the embodiments of the present invention. In addition, in the context, it should also be understood that when it is mentioned that an element is connected "above" or "below" another element, it can not only be directly connected "above" or "below" another element, but also be indirectly connected "above" or "below" another element through an intermediate element.

[0057] Embodiment 1

[0058] Such as Figure 1 and Figure 2The figure shows a schematic diagram of the positional relationship between an electrophotographic apparatus for accommodating a processing cartridge, the processing cartridge, and the electrophotographic apparatus in this embodiment. The processing cartridge is detachably installed in the imaging apparatus. Four processing cartridges of different colors are installed in a processing cartridge holder 910 and enter the electrophotographic apparatus as the processing cartridge holder 910 is pushed into the interior of the electrophotographic apparatus. Inside the electrophotographic apparatus, there are also a first pushing portion 920 and a second pushing portion 930. When the processing cartridge is properly installed in the electrophotographic apparatus and the door of the electrophotographic apparatus is closed, the first pushing portion 920 rotates and pushes the parts on the processing cartridge along the installation direction of the processing cartridge; when the processing cartridge needs to perform a drum separation operation, the second pushing portion 930 pushes the parts on the processing cartridge in the direction opposite to the installation direction of the processing cartridge.

[0059] Figure 3 This is a perspective view of the processing cartridge in this embodiment, Figure 4 is Figure 3 a partial enlarged view of. Among them, Figure 4 is Figure 3 the part at the right end in. As Figure 3 shown, the processing cartridge includes a first housing 1101 and a second housing 1102. Among them, a developing roller (not shown in the figure) is provided in the first housing 1101, and the first housing 1101 is used to support the developing roller; a photosensitive drum (not shown in the figure) is provided in the second housing 1102, and the second housing 1102 is used to support the photosensitive drum.

[0060] In this embodiment, the force receiving device is located on the right side of the processing cartridge and in front of the installation direction relative to the installation direction of the processing cartridge. After being installed in the electrophotographic apparatus, the force receiving device is on the same side as the first pushing portion 920 and the second pushing portion 930 inside the electrophotographic apparatus. As Figure 4 shown, the processing cartridge further includes a force receiving device and a support frame 130. The force receiving device includes a first force receiving portion 110 and a second force receiving portion 120. The support frame 130 is used to support the first force receiving portion 110 and / or the second force receiving portion 120. The first force receiving portion 110 can be coupled to the first pushing portion 920 of the electrophotographic apparatus, and the second force receiving portion 120 can be coupled to the second pushing portion 930 of the electrophotographic apparatus.

[0061] Figure 5 , Figure 6 is an exploded view, mainly revealing how the second force receiving portion 120 is fixed to the support frame 130. As Figure 5As shown, the second force receiving portion 120 includes an elastic member 121. Preferably, the elastic member 121 can push the second force receiving portion 120 to move away from the right end of the processing cartridge. Therefore, the second force receiving portion is located at a position away from the right end of the processing cartridge when no external force is applied. Of course, the elastic member 121 can also be disposed on the side of the second force receiving portion 120 close to the left end of the processing cartridge and pull the second force receiving portion 120 to move towards the left end. As Figure 6 shown, the second force receiving portion 120 further includes a limiting portion 122, which enables the second force receiving portion 120 to only translate along the length direction of the processing cartridge.

[0062] Preferably, the limiting portion 122 is a cross-shaped protrusion, and the support frame 130 includes a cross-shaped groove 131. Through the engagement of the limiting portion 122 and the cross-shaped groove 131, the second force receiving portion 120 can only translate along the length direction of the processing cartridge. Of course, the number of grooves and protrusions can also be appropriately increased or decreased, or other existing technologies in the mechanical field can be used to keep the second force receiving portion 120 only translating along the length direction of the processing cartridge. In this embodiment, only a preferred solution with a relatively simple process is introduced.

[0063] Figure 7 is an exploded view, mainly revealing how the first force receiving portion 110 is fixed to the support frame 130. Through the engagement of the groove 132 in the figure and the first force receiving portion 110, the first force receiving portion 110 can only translate along the installation direction of the processing cartridge.

[0064] Figure 8 and Figure 9 is a schematic diagram of the main working principle of the processing cartridge force receiving device. Preferably, the first force receiving portion 110 includes a pushing block 112, and the pushing block 112 is a right triangle, which is narrower towards the front in the installation direction of the processing cartridge and the hypotenuse faces near the right end of the processing cartridge; the second force receiving portion 120 includes a receiving block 123, and the receiving block 123 is a right triangle, which is wider towards the front in the installation direction of the processing cartridge and the hypotenuse faces near the left end of the processing cartridge.

[0065] As Figure 8 shown, when the processing cartridge is not installed in the electrophotographic apparatus or during the installation of the processing cartridge into the electrophotographic apparatus, the pushing block 112 does not push the receiving block 123; as Figure 9As shown, when the processing cartridge is installed in place in the electrophotographic apparatus and the door is closed, the first pushing portion 920 of the electrophotographic apparatus pushes the first force receiving portion 111 on the first force receiving part 110, causing the first force receiving part 110 to translate as a whole in the processing cartridge installation direction. The hypotenuse of the pushing block 112 is coupled with the hypotenuse of the receiving block 123, thereby pushing the second force receiving part 120 to move towards the right end of the processing cartridge, and finally causing the second force receiving portion 124 of the second force receiving part 120 to be in a position where it can be pushed by the second pushing portion 930 in the electrophotographic apparatus.

[0066] When the used processing cartridge is removed from the electrophotographic apparatus, after the door of the electrophotographic apparatus is opened, the first force receiving part 110 is no longer squeezed by the first pushing portion 920. Therefore, the elastic member 121 can push the second force receiving part 120 to move away from the right end of the processing cartridge, and through the abutment of the hypotenuse of the receiving block 123 and the inclined surface of the pushing block 112, reversely push the first force receiving part 110 to move in the opposite direction of the processing cartridge installation direction to restore to Figure 8 the state in

[0067] Preferably, a buffer portion 113 is further provided on the first force receiving part 110 to prevent jamming during the working process. Preferably, the buffer portion 113 is of a U-shaped structure, and a spring is provided at the U-shaped opening thereof, so that there is a certain clearance during the forced translation of the first force receiving part 110 under force.

[0068] Of course, using the inclined surface for forced pushing is only a preferred solution in this embodiment. There are many other ways in the prior art in the mechanical field, such as using hydraulic control or other various ways of control, which will not be elaborated here.

[0069] Figure 10 and Figure 11 are perspective views of the processing cartridge observed along the processing cartridge installation direction. Figure 10 Corresponding to Figure 8 the corresponding state in , so that during the process of installing the processing cartridge into the electrophotographic apparatus, interference between the second force receiving portion 124 and the second pushing portion 930 can be effectively avoided, and interference collision during the installation of the processing cartridge can be prevented; Figure 11 Corresponding to Figure 9 the state in , at this time the processing cartridge has been installed in place and the electrophotographic apparatus has closed the door. If the processing cartridge is to perform drum separation, the second pushing portion 930 pushes the second force receiving portion 124 to move in the opposite direction of the processing cartridge installation direction, and the drum can be separated according to the lever principle.

[0070] Embodiment 2

[0071] After the processing cartridge is loaded into the electrophotographic apparatus, the electrophotographic apparatus first inspects the toner cartridge. During this process, the second pushing portion 930 moves a certain distance along the installation direction of the processing cartridge. After the inspection is completed, once the processing cartridge needs to perform a drum separation operation, the second pushing portion 930 moves in the opposite direction of the installation direction of the processing cartridge and pushes the processing cartridge to perform drum separation. This embodiment provides a processing cartridge, and the parts not described are the same as those of the processing cartridge in the first embodiment.

[0072] Figure 12 is a top view of the processing cartridge observed along a plane parallel to the installation direction of the processing cartridge. The processing cartridge in this embodiment includes a first force receiving portion 210. The first force receiving portion 210 is similar to the first force receiving portion 110 in the first embodiment and can only translate along the installation direction of the processing cartridge and its opposite direction; a second force receiving portion 220. In this embodiment, viewed from Figure 12 the perspective of, the second force receiving portion 220 can rotate clockwise or counterclockwise. For the sake of simplicity, in this embodiment, the clockwise and / or counterclockwise descriptions of the second force receiving portion 220 both adopt Figure 12 the perspective in as the standard. The processing cartridge further includes a support frame 230. The support frame 230 includes a support shaft 231 that supports the rotation of the second force receiving portion 220. Preferably, it further includes a first limit block 232 and a second limit block 233 that limit the movement range of the second force receiving portion 220.

[0073] Figure 13 is an exploded view of the positional relationship between the second force receiving portion 220 and the support frame 230. An elastic member 221 pushes the second force receiving portion 220, so that the second force receiving portion 220 has a tendency to rotate counterclockwise. Preferably, the elastic member 221 is a torsion spring. One end of the torsion spring is connected to the second force receiving portion 220, and the other end is connected to the processing cartridge body or other components provided on the processing cartridge. The torsion spring 221 and the second force receiving portion 220 are both sleeved on the support shaft 231.

[0074] Figures 14 to 17 is a schematic diagram of the working process of the force receiving device in this embodiment. The first force receiving portion 210 is similar to that in the first embodiment and both include a first force receiving part 211 and a buffer part 213. The pushing block 212 has a different shape from the pushing block 112 in the first embodiment, but both are for pushing the second force receiving portion 220. The second force receiving portion 220 includes a receiving block 223 that contacts and is pushed by the pushing block 212, a hollow column 222 sleeved on the support shaft 231, and a second force receiving part 224 that contacts the second pushing portion 930.

[0075] Figure 14The states of the components when the processing cartridge is not installed in the electrophotographic apparatus and when the processing cartridge is installed in the electrophotographic apparatus. At this time, the first force receiving portion 210 is not in contact with the second force receiving portion 220. Due to the action of the elastic member 221, the second force receiving portion 220 has a tendency to rotate counterclockwise. However, due to the abutment of the first limiting block 232 and the receiving block 223 and / or the abutment of the second limiting block 233 and the second force receiving portion 224, the second force receiving portion 220 cannot continue to rotate counterclockwise. During the installation process, since the second force receiving portion 224 will not contact the second pushing portion 930, interference problems can be effectively avoided.

[0076] It can be understood that only the first limiting block 232 or the second limiting block 233 may be provided on the support frame 230, so that the first limiting block 232 abuts against the receiving block 223, or the second limiting block 233 abuts against the second force receiving portion 224. In this way, the effect that the second force receiving portion 220 cannot continue to rotate counterclockwise can be achieved, so that the second force receiving portion 224 will not contact the second pushing portion 930, thereby effectively avoiding interference problems.

[0077] Figure 15 The state after the door of the electrophotographic apparatus is closed. At this time, the first force receiving portion 210 is pushed to translate along the processing cartridge installation direction and pushes the second force receiving portion 220. However, due to the position of the second pushing portion 930 hindering the amplitude of the second force receiving portion 220 rotating clockwise, the second force receiving portion 220 cannot rotate completely. At this time, the buffer portion 213 on the first force receiving portion 210 deforms and the spring therein is compressed, so that the door of the electrophotographic apparatus can be smoothly closed.

[0078] Figure 16 The state during the detection of the electrophotographic apparatus. At this time, the second pushing portion 930 moves along the processing cartridge installation direction, thereby avoiding the position where the second force receiving portion 220 rotates clockwise, and the second force receiving portion 220 rotates to the Figure 16 position. After that, if the processing cartridge needs to perform a drum separation operation, the electrophotographic apparatus can control the second pushing portion 930 to move in the opposite direction of the processing cartridge installation direction to push the second force receiving portion 220 (the contact position is the second force receiving portion 224) to perform drum separation, as can be seen in the state such as Figure 17

[0079] Preferably, in order to make the position of the second force receiving portion 220 as fixed as possible during the drum separation process and reduce the incomplete drum separation caused by play, a third limiting block 234 is further provided on the support frame 230. The third limiting block 234 is set to be able to Figure 16 and Figure 17 ​in the state (i.e., when the first force receiving part 210 pushes the second force receiving part 220 to move to the limit position), it abuts against the second force receiving part 224, as Figure 18 shown, so that the force is stable during the drum separation process.

[0080] Embodiment III

[0081] On the basis of Embodiment II, a deformation can be made, that is, the second force receiving part 220 is rotated counterclockwise. When not installed, the second force receiving part 224 does not point to the front in the direction of the processing cartridge installation like in Embodiment II, but points to the rear in the direction of the processing cartridge installation. The pushing block 212 and the receiving block 223 are both arranged on the left side of the hollow column 222, and the position of the elastic member 221 is adjusted accordingly, so as to achieve mirror flipping and make the second force receiving part 220 rotate counterclockwise during the installation process.

[0082] Preferably, in order to set the limiting member with the same function as the third limiting block 234 in Embodiment II to help stabilize the position during the drum separation process, the block that moves linearly along the length direction of the processing cartridge in Embodiment I can be combined to abut against the second force receiving part 224 at the rear in the installation direction, or the third limiting block 234 that expands and contracts relative to the main body of the processing cartridge can be set. Whether it is a linearly moving or expanding and contracting block, it is pushed by the first force receiving part 210 during the movement process to expand and contract or move linearly.

[0083] Embodiment IV

[0084] This embodiment is further improved based on Embodiment VI according to the actual situation of trial production.

[0085] Figure 19 This is a schematic structural diagram of the processing cartridge in this embodiment. Only the right part for the drum separation structure is intercepted. Similar to Embodiment II, the processing cartridge in this embodiment includes a first force receiving part 310 and a second force receiving part 320 that acts with the second pushing part 930. This embodiment also includes an anti - detachment part 340. At least a part of the projection of the anti - detachment part 340 in the length direction of the processing cartridge coincides with the second force receiving part 320. The anti - detachment part 340 is used to prevent the second force receiving part 320 from detaching from the processing cartridge during the advancement process. Preferably, the anti - detachment part 340 is located on the first housing 1101 and protrudes from the first housing 1101 in a direction away from the processing cartridge.

[0086] Figure 20 This is a schematic structural diagram of the first force receiving part 310 and the second force receiving part 320 in this embodiment. As Figure 20As shown, in this embodiment, a new buffer portion 313 is provided. Its function is similar to that of the buffer portion 213, except that the shape has slightly changed, from the original "U" shape to an "S" shape. Such a design enables the buffer portion 313 to withstand a greater amount of deformation, making the component work more stably. As Figure 4 and Figure 19 shown, in each of the above embodiments, the second force receiving portion is disposed at the upper part after the processing cartridge is installed in the electrophotographic apparatus, and preferably, the protrusion of the second force receiving member at the upper part is higher than the first housing both at the first position and the second position.

[0087] The foregoing is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A processing cartridge detachably installed in an electrophotographic apparatus, the electrophotographic apparatus including a second pushing portion, the processing cartridge including: A developing roller and a first housing supporting the developing roller; A photosensitive drum and a second housing supporting the photosensitive drum; Characterized in that the processing cartridge further includes a second force receiving portion having a plurality of position states. When in the first position state, there is a gap between the second force receiving portion and the second pushing portion; when in the second position state, the second force receiving portion abuts against the second pushing portion; When the roller and the drum of the processing cartridge are separated, the second force receiving portion is in the second position state; When in the first position and the second position, the height by which the second force receiving portion protrudes from the processing cartridge is higher than that of the first housing, and the distance between the second force receiving portion and the first housing in the height direction of the processing cartridge remains unchanged.

2. The processing cartridge according to claim 1, wherein The processing cartridge further includes an elastic member that can maintain the second force receiving portion in the first position state.

3. The processing cartridge according to claim 2, characterized in that, The processing cartridge is provided with a support frame, and the second force receiving portion is disposed on the support frame and can translate along the length direction of the processing cartridge.

4. The processing cartridge according to claim 3, characterized in that, The support frame is provided with a groove, and the second force receiving portion is provided with a limiting portion that is movably disposed in the groove.

5. The processing cartridge according to claim 4, wherein The processing cartridge further includes a first force receiving portion, and the electrophotographic apparatus further includes a first pushing portion. The first force receiving portion can abut against the first pushing portion so that the first force receiving portion can push the second force receiving portion to move along the length direction of the processing cartridge.

6. The processing cartridge according to claim 5, characterized in that, The first force receiving portion is provided with a triangular pushing block, and the second force receiving portion is provided with a triangular receiving block. The pushing block can abut against the receiving block so that the second force receiving portion moves along the length direction of the processing cartridge.

7. The processing cartridge according to claim 2, characterized in that, The first housing is provided with a support frame, and the second force receiving portion is rotatably disposed on the support frame.

8. The processing cartridge according to claim 7, wherein, The support frame is provided with a support shaft, and the second force receiving portion is provided with a hollow column sleeved outside the support shaft, enabling the second force receiving portion to rotate relative to the support shaft.

9. The process cartridge according to claim 7, characterized in that, The support frame is further provided with a limiting block for restricting the rotation of the second force receiving portion, and the second force receiving portion is further provided with a second force receiving portion; When the second force receiving portion is in the first position state, there is a gap between the second force receiving portion and the second pushing portion; When the second force receiving portion is in the second position state, the second force receiving portion can abut against the second pushing portion.

10. The processing cartridge according to claim 7, wherein The processing cartridge further includes a first force receiving portion, and the electrophotographic apparatus further includes a first pushing portion. The first force receiving portion can abut against the first pushing portion so that the first force receiving portion can push the second force receiving portion to rotate on the support frame.

11. The processing cartridge according to claim 5 or 10, characterized in that, The first force receiving portion includes a buffer portion.

12. The processing cartridge according to claim 11, wherein The buffer portion is a U-shaped structure or an S-shaped structure.

13. The processing cartridge according to claim 5 or 10, wherein The first housing is further provided with a anti - detachment portion, the anti - detachment portion is located above the first force receiving portion, and at least a part of the projection of the anti - detachment portion in the length direction of the processing cartridge coincides with the first force receiving portion.

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