Processing box

Abstract

The embodiment of the utility model provides a processing box. The developing unit is movably arranged on the photosensitive unit, the developing unit comprises a developing main body, a developing roller and a separating sliding block, the developing roller is rotatably arranged on the developing main body, the separating sliding block is operably connected to the developing main body, the separating sliding block is provided with a stress surface, and the stress surface is used for being matched with the moving part. The separation sliding block has an initial state and a first stress state, when the separation sliding block is in the initial state, at least part of the stress surface faces the bottom side of the processing box and inclines relative to the horizontal plane, and the developing roller is in contact with the photosensitive drum; when the moving part abuts against the stress surface, the separation sliding block drives the developing roller to move, so that the developing roller is separated from the photosensitive drum, and the separation sliding block is switched to a first stress state. The processing box provided by the embodiment of the utility model can be conveniently detached from the moving part.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electrophotographic imaging, and particularly relates to a process cartridge. BACKGROUND

[0002] The process cartridge of the imaging device comprises a developing roller and a photosensitive drum, in the related art, the developing roller and the photosensitive drum are in contact to develop, and when not developing, the process cartridge is separated from the developing roller and the photosensitive drum by cooperating with a moving part of the imaging device.

[0003] However, the process cartridge in the related art is hindered by the moving part too much when being separated from the imaging device, and it is inconvenient to separate the two, and if a larger force is applied during the separation process, there is a risk of damaging the moving part and the process cartridge. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the main purpose of the embodiments of the present application is to provide a process cartridge which can be easily separated from the moving part.

[0005] To achieve the above-mentioned purpose, the technical scheme of the embodiments of the present application is as follows:

[0006] The embodiments of the present application provide a process cartridge, which is used for cooperating with a moving part of an imaging device, and the process cartridge comprises:

[0007] A photosensitive unit, which comprises a photosensitive main body and a photosensitive drum, and the photosensitive drum is rotatably arranged on the photosensitive main body;

[0008] A developing unit, which is movably arranged on the photosensitive unit, and the developing unit comprises a developing main body, a developing roller and a separation slider, the developing roller is rotatably arranged on the developing main body, the separation slider is operatively connected to the developing main body, and the separation slider has a force receiving surface which is used for cooperating with the moving part;

[0009] The separation slider has an initial state and a first force receiving state, when the separation slider is in the initial state, the force receiving surface is at least partially directed to a bottom side of the process cartridge and is inclined relative to a horizontal plane, and the developing roller is in contact with the photosensitive drum; when the moving part abuts against the force receiving surface, the developing roller is moved by the separation slider to separate the developing roller from the photosensitive drum, and the separation slider is switched to the first force receiving state.

[0010] In an embodiment, when the separation slider is in the initial state, the inclination angle between the force receiving surface and the horizontal plane is greater than or equal to 45° and less than or equal to 85°.

[0011] In one embodiment, the bottom end of the separation slider is a free end, and when the separation slider is in the initial state, the linear distance between the free end of the separation slider and the axis of the photosensitive drum is greater than or equal to 15 mm and less than or equal to 23 mm.

[0012] In one embodiment, the separation slider is located at one end of the developing main body, the processing cartridge includes a drive end cover arranged at one end of the photosensitive main body close to the separation slider, and the drive end cover is connected with the developing unit; the bottom end of the separation slider extends to the bottom side of the end cover bottom surface of the drive end cover;

[0013] At least part of the force receiving surface is located on the bottom side of the end cover bottom surface of the drive end cover; and / or,

[0014] The relative height of at least part of the force receiving surface is lower than the relative height of the photosensitive drum.

[0015] In one embodiment, the developing unit includes a cover, the separation slider is located at one end of the developing main body, the cover is located at one end of the developing main body where the separation slider is arranged, and part of the cover extends towards the bottom side to form a shielding part located on the side of the separation slider away from the developing main body.

[0016] In one embodiment, the processing cartridge includes a drive end cover arranged at one end of the photosensitive main body close to the separation slider, the drive end cover is connected with the developing unit, and the bottom end of the separation slider extends to the bottom side of the end cover bottom surface of the drive end cover to form a first area, and in a projection plane parallel to the shielding part, the projection of the first area is located within the projection range of the shielding part.

[0017] In one embodiment, the separation slider also has an abutting surface, the abutting surface is connected with the force receiving surface, during the installation of the processing cartridge to the image forming device, the moving part abuts against the abutting surface to push the separation slider to move relative to the developing roller, and the separation slider is in a second force receiving state; the separation slider moves to avoid the moving part to separate from the moving part, the separation slider is reset to the initial position, and the separation slider switches to the initial state.

[0018] In one embodiment, when the separation slider moves to avoid the moving part to separate from the moving part, the separation slider is reset to the initial position under the action of gravity; and / or,

[0019] The developing unit further comprises an elastic member, one end of the elastic member is arranged on the separation slider, and the other end of the elastic member is arranged on the developing main body, when the separation slider moves to be separated from the moving member by active avoidance, the separation slider is reset to the initial position under the elastic action of the elastic member.

[0020] In one embodiment, at least a partial region of the force receiving surface is a plane; or,

[0021] The force receiving surface is a curved surface which is convex outward in a middle region.

[0022] In one embodiment, the developing main body has a developing bottom surface, when the separation slider is in the initial state, an included angle between the force receiving surface and the developing bottom surface is greater than 45° and less than 85°; or,

[0023] An outer diameter of the developing roller satisfies: when the separation slider is in the initial state, the force receiving surface is inclined to the bottom side of the process cartridge and relative to a horizontal plane; wherein the outer diameter of the developing roller is greater than or equal to 10 mm and less than or equal to 15 mm.

[0024] Embodiments of the present application provide a process cartridge, which comprises a photosensitive unit and a developing unit. A developing roller of the developing unit is rotatably arranged on a developing main body, a separation slider is operatively connected to the developing main body, the separation slider has a force receiving surface, and the force receiving surface is used to cooperate with a moving member. The separation slider has an initial state and a first force receiving state, when the separation slider is in the initial state, the force receiving surface is at least partially inclined to the bottom side of the process cartridge and relative to a horizontal plane, and the developing roller is in contact with the photosensitive drum. When the moving member abuts against the force receiving surface, the developing roller is moved by the separation slider to be separated from the photosensitive drum, and the separation slider is switched to the first force receiving state. Thus, on the one hand, the separation slider can cooperate with the moving member to switch the separation slider between the initial state and the first force receiving state, so as to switch the developing roller between the contact and the separation with the photosensitive drum. On the other hand, since the force receiving surface is inclined downward in the initial state, the inclined downward force receiving surface can play a certain guiding role in the process of separating the process cartridge from the image forming device, so as to reduce the resistance of the moving member to the force receiving surface to a certain extent, and to make the required force as small as possible in the separation process, so as to facilitate the separation of the process cartridge from the image forming device. Thus, without exerting excessive force, the separation of the process cartridge from the image forming device can be realized, so as to greatly reduce the risk of damage to the moving member and the separation slider. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 FIG. 1 is a structural schematic diagram of a process cartridge according to an embodiment of the present application;

[0026] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0027] Figure 3 for Figure 1 Exploded view of the processing box;

[0028] Figure 4 for Figure 3 A schematic diagram of the structure of the separation slider;

[0029] Figure 5 for Figure 3 Schematic diagram of the middle cover structure;

[0030] Figure 6 for Figure 1 A structural schematic diagram of the processing box from another perspective; the structure of the part shown by the dotted line in the figure is partially hidden; arrow B in the figure represents the straight-line distance between the free end and the axis of the photosensitive drum;

[0031] Figure 7 for Figure 6 A magnified view of a section at point C;

[0032] Figure 8 for Figure 1 A schematic diagram showing the cooperation relationship between the processing box and the moving parts;

[0033] Figure 9 This is a schematic diagram of the processing box according to another embodiment of this application;

[0034] Figure 10 for Figure 9 A schematic diagram of the structure of the separation slider;

[0035] Figure 11 for Figure 8 Structural diagram of the moving component;

[0036] Figure 12 for Figure 8 A structural schematic diagram of the moving component from another perspective;

[0037] Figure 13 for Figure 8 The diagram shows the interaction between the processing box and the moving parts during installation. Some areas of the processing box are hidden in the diagram. In the diagram, L1 represents the rotation center of the developing unit, and L2 represents the rotation center of the separating slider. The moving parts and the contact surfaces of the separating slider are in contact, and the separating slider is in the second stress state.

[0038] Figure 14 for Figure 8The diagram shows the interaction between the processing box and the moving part during installation. The moving part and the contact surface of the separating slider are in contact, and the separating slider is in a position to avoid the movement of the moving part. The separating slider is in the second force state.

[0039] Figure 15 for Figure 8 The diagram shows the interaction between the processing cartridge and the moving parts during the developing process, with the separation slider in its initial state.

[0040] Figure 16 for Figure 8 The diagram shows the interaction between the processing cartridge and the moving part after the developing process has stopped. The moving part is in contact with the force-bearing surface of the separation slider.

[0041] Figure 17 for Figure 8 The diagram shows the interaction between the processing cartridge and the moving part after the developing process has stopped. The moving part is in contact with the force-bearing surface of the separation slider, and the separation slider is in the first force-bearing state.

[0042] Explanation of reference numerals in the attached figures

[0043] 10. Photosensitive unit; 11. Photosensitive body; 12. Photosensitive drum; 20. Developing unit; 21. Developing body; 21a. Developing bottom surface; 211. First end; 212. Second end; 22. Developing roller; 23. Separation slider; 23a. Force-bearing surface; 23b. Abutment surface; 231. Free end; 24. Protective cover; 241. Shielding part; 25. Fixing bracket; 30. Drive end cover; 30a. End cover bottom surface; 40. Moving part. Detailed Implementation

[0044] In this application, the orientation or positional relationship of "top" and "bottom" is based on the appendix. Figure 6 The orientation or positional relationship shown, the "separation direction" orientation or positional relationship is based on the attached... Figure 17 The orientation or positional relationship shown is for illustrative purposes only and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0045] In the description of the embodiments of this application, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0046] Reference to an "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. As will be apparent to those of ordinary skill in the art, embodiments described herein can be combined with other embodiments.

[0047] An embodiment of the application provides a process cartridge, please refer to Figure 1 , Figure 3 , Figure 4 and Figure 8 , the process cartridge is used in cooperation with a moving member 40 of an image forming apparatus, and the process cartridge includes a photosensitive unit 10 and a developing unit 20.

[0048] The photosensitive unit 10 includes a photosensitive main body 11 and a photosensitive drum 12, and the photosensitive drum 12 is rotatably arranged on the photosensitive main body 11.

[0049] The developing unit 20 is movably arranged on the photosensitive unit 10, and the developing unit 20 includes a developing main body 21, a developing roller 22 and a separation slider 23, the developing roller 22 is rotatably arranged on the developing main body 21, and the separation slider 23 is operatively connected to the developing main body 21, and the separation slider 23 has a force receiving surface 23a, and the force receiving surface 23a is used in cooperation with the moving member 40.

[0050] Please refer to Figures 15 to 17 , the separation slider 23 has an initial state and a first force receiving state, when the separation slider 23 is in the initial state, the force receiving surface 23a is at least partially directed to a bottom side of the process cartridge and is inclined relative to a horizontal plane, and the developing roller 22 is in contact with the photosensitive drum 12; when the moving member 40 is in abutment with the force receiving surface 23a, the developing roller 22 is moved by the separation slider 23 to separate the developing roller 22 from the photosensitive drum 12, and the separation slider 23 is switched to the first force receiving state.

[0051] Specifically, the image forming apparatus can be any type of image forming device such as a printer, a copier, a fax machine, etc. The image forming apparatus includes a moving member 40, which can be used in cooperation with the process cartridge. By moving the moving member 40, the relative position between the developing roller 22 and the photosensitive drum 12 in the process cartridge can be switched.

[0052] The photosensitive drum 12 is rotatably arranged on the photosensitive main body 11, whereby the photosensitive drum 12 can rotate around an axis of rotation for developing work.

[0053] The developing roller 22 is rotatably arranged on the developing main body 21, whereby the developing roller 22 can rotate around a roller axis for developing work.

[0054] In fact, the developing main body 21 is movable relative to the photosensitive unit 10, and the relative movement between the developing unit 20 and the photosensitive unit 10 can be achieved by the cooperation between the separation slider 23 and the moving piece 40, so that the developing roller 22 and the photosensitive drum 12 can be switched between contact and separation.

[0055] It should be noted that the movement mode between the developing unit 20 and the photosensitive unit 10 is not limited, which can be rotation, translation, other movable mode or combination of multiple movable modes.

[0056] The separation slider 23 is operatively connected to the developing main body 21, which means that the separation slider 23 can be connected to the developing main body 21 by cooperating with the moving piece 40 to drive the developing roller 22 to move. The specific arrangement mode is not limited.

[0057] For example, the separation slider 23 can be movably arranged on the developing main body 21, that is, the separation slider 23 can move relative to the developing main body 21, such as rotation, translation, other movable mode or combination of multiple movable modes. However, no matter what movement mode the separation slider 23 adopts, it must meet the requirement that it can drive the developing roller 22 to separate from the photosensitive drum 12 when the moving piece 40 abuts against the stress surface 23a.

[0058] For another example, the process cartridge further comprises a driving end cover 30, and the separation slider 23 can also be movably arranged on the driving end cover 30. When the separation slider 23 cooperates with the moving piece 40, the separation slider 23 can move relative to the driving end cover 30 and drive the developing roller 22 to move.

[0059] The stress surface 23a of the separation slider 23 is used to cooperate with the moving piece 40, and the specific shape is not limited.

[0060] For example, please refer to Figure 2 and Figure 4 At least part of the stress surface 23a is a plane. Thus, the processing and manufacturing can be facilitated.

[0061] For another example, please refer to Figure 9 and Figure 10 The stress surface 23a is a curved surface with the middle region protruding outward. Thus, in the process of disassembling the process cartridge, the relative movement between the stress surface 23a and the moving piece 40 can be further guided, and the hindrance of the moving piece 40 to the process cartridge can be reduced.

[0062] Please refer to Figure 15 The initial state of the separation slider 23 refers to the state of the separation slider 23 when the process cartridge is in the normal working placement state and the moving piece 40 does not exert force on the separation slider 23.

[0063] Please refer to Figure 17The first force receiving state of the separation slider 23 refers to a state of the separation slider 23 when the moving member 40 abuts against the force receiving surface 23a to transmit force through the separation slider 23 so that the developing roller 22 is separated from the photosensitive drum 12.

[0064] In fact, when the process cartridge is in developing operation, and when the process cartridge is not assembled to the image forming apparatus, the separation slider 23 is in the initial state, and the developing roller 22 is in contact with the photosensitive drum 12. When the process cartridge is not in developing operation, the image forming apparatus moves the moving member 40 in the separation direction to abut against and push the force receiving surface 23a of the separation slider 23, thereby bringing and maintaining the developing roller 22 in the state of being separated from the photosensitive drum 12.

[0065] When the process cartridge needs to switch back to the developing operation, the image forming apparatus resets the moving member 40 to cancel the abutment of the moving member 40 against the force receiving surface 23a of the separation slider 23, so that the developing roller 22 is in contact with the photosensitive drum 12.

[0066] It should be noted that the moving member 40 moves to abut against the force receiving surface 23a, and the moving manner of the moving member 40 during the abutment is not limited. For example, the moving member 40 only translates in the separation direction to abut against the force receiving surface 23a. For another example, the moving member 40 can rotate within a certain range while translating in the separation direction to abut against the force receiving surface 23a.

[0067] When the separation slider 23 is in the initial state, the force receiving surface 23a is at least partially directed to the bottom side of the process cartridge and is inclined relative to the horizontal plane. This means that, in the initial state, the force receiving surface 23a does not extend in the vertical direction, nor is directed to the top side of the process cartridge, but is directed to the bottom side. Moreover, the force receiving surface 23a is not parallel to the horizontal plane, but is inclined relative to the horizontal plane.

[0068] The force receiving surface 23a can be partially directed to the bottom side of the process cartridge and inclined relative to the horizontal plane, or can be entirely directed to the bottom side of the process cartridge and inclined relative to the horizontal plane.

[0069] It should be noted that, when the process cartridge is not in developing operation, the moving member 40 moves in the separation direction to abut against the force receiving surface 23a of the separation slider 23. During the process of disassembling the process cartridge from the image forming apparatus, the relative movement between the force receiving surface 23a and the moving member 40 is also in the separation direction. That is, on the one hand, the force receiving surface 23a needs to hinder the moving member 40 from moving in the separation direction when the process cartridge is not in developing operation, so as to maintain the state of the developing roller 22 being separated from the photosensitive drum 12. On the other hand, during the process of disassembling the process cartridge, the mutual hindering effect between the force receiving surface 23a and the moving member 40 should not be too large, so as to avoid the problem of difficulty in disassembling the process cartridge.

[0070] Thus, the force receiving surface 23a, by being arranged obliquely downward, can facilitate the abutment of the moving member 40 and can facilitate the guiding of the relative movement between the force receiving surface 23a and the moving member 40, so as to facilitate the separation of the two during the separation process, and can reduce the force applied during the separation process.

[0071] It should be noted that the oblique angle between the force receiving surface 23a and the horizontal plane can be set according to actual conditions.

[0072] For example, referring to Figure 6 , Figure 7 and Figure 9 , when the separation slider 23 is in the initial state, the oblique angle between the force receiving surface 23a and the horizontal plane (the included angle α in Figure 7 and Figure 9 ) is greater than or equal to 45° and less than or equal to 85°. For example, 45°, 60°, 75° or 85°. By controlling the oblique angle between the force receiving surface 23a and the horizontal plane within the above range, the separation of the processing cartridge and the moving member 40 during the separation process can be better facilitated.

[0073] In fact, the oblique angle between the force receiving surface 23a and the vertical plane is greater than or equal to 5° and less than or equal to 45°. For example, 5°, 15°, 30° or 45°.

[0074] It should be noted that no matter what type of force receiving surface 23a the separation slider 23 has, when the separation slider 23 is in the initial state, the force receiving surface 23a should be obliquely inclined relative to the horizontal plane towards the bottom side of the processing cartridge.

[0075] In the process cartridge provided in the embodiments of the present application, the separation slider 23 has an initial state and a first force receiving state. When the separation slider 23 is in the initial state, the force receiving surface 23a faces the bottom side of the process cartridge and is inclined relative to the horizontal plane, and the developing roller 22 is in contact with the photosensitive drum 12. When the moving member 40 abuts against the force receiving surface 23a to move the developing roller 22 by the separation slider 23 to separate the developing roller 22 from the photosensitive drum 12, the separation slider 23 switches to the first force receiving state. In this way, on the one hand, the separation slider 23 can cooperate with the moving member 40 to switch the separation slider 23 between the initial state and the first force receiving state, thereby switching the developing roller 22 between contact with and separation from the photosensitive drum 12. On the other hand, since the force receiving surface 23a faces the bottom side of the process cartridge and is inclined relative to the horizontal plane in the initial state of the separation slider 23, i.e., the force receiving surface 23a is inclined downward. Thus, during the process of detaching the process cartridge from the image forming apparatus, the downwardly inclined force receiving surface 23a can play a certain guiding role, thereby reducing the obstruction of the moving member 40 to the force receiving surface 23a to some extent, and enabling the required force to be as small as possible during the separation process, thereby facilitating the separation of the process cartridge from the image forming apparatus. In this way, the separation of the process cartridge from the image forming apparatus can be achieved without exerting excessive force, thereby greatly reducing the risk of damage to the moving member 40 and the separation slider 23.

[0076] In an embodiment, as shown in Figure 4 and Figure 6 , the bottom end of the separation slider 23 is a free end 231. When the separation slider 23 is in the initial state, the straight-line distance between the free end 231 of the separation slider 23 and the axis of the photosensitive drum 12 (see arrow B in Figure 6 ) is greater than or equal to 15 mm and less than or equal to 23 mm. In this way, by controlling the distance between the two within the above range, even if the distance between the moving member 40 and the separation slider 23 becomes larger due to long-term operation of the process cartridge, the moving member 40 can be prevented from disengaging from the separation slider 23 during the movement of the developing roller 22 by the separation slider 23, thereby ensuring effective separation of the photosensitive drum 12 and the developing roller 22.

[0077] Here, the free end 231 is the bottom end of the separation slider 23, which refers to the distal end with higher degrees of freedom. For example, the separation slider 23 has an abutting surface 23b connected to the force receiving surface 23a, and the free end 231 is the connection between the force receiving surface 23a and the abutting surface 23b.

[0078] The specific value of the straight-line distance between the free end 231 of the separation slider 23 and the axis of the photosensitive drum 12 can be determined according to actual conditions, such as 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm, 21 mm, 22 mm, or 23 mm.

[0079] In an embodiment, as shown inFigure 3 and Figure 6 The separating slider 23 is located at one end of the developing body 21, and the process cartridge comprises a driving end cover 30, the driving end cover 30 is arranged at the end of the photosensitive body 11 close to the separating slider 23, and the driving end cover 30 is connected with the developing unit 20; the bottom end of the separating slider 23 extends to the bottom side of the end cover bottom surface 30a of the driving end cover 30.

[0080] At least part of the stress surface 23a is located at the bottom side of the end cover bottom surface 30a of the driving end cover 30. That is to say, the bottom end of the separating slider 23 extends to the bottom side of the driving end cover 30. In this way, the stress surface 23a can be conveniently matched with the moving piece 40, and then the developing roller 22 can be conveniently separated from the photosensitive drum 12.

[0081] Specifically, the separating slider 23 and the driving end cover 30 are located at the same end of the process cartridge. The driving end cover 30 is connected with the developing unit 20 and the photosensitive unit 10 respectively, so that the developing unit 20 and the photosensitive unit 10 can be connected together.

[0082] The bottom end of the separating slider 23 refers to the bottom region of the separating slider 23 when the process cartridge is in a normal working placement state and the moving piece 40 does not exert a force on the separating slider 23.

[0083] The end cover bottom surface 30a of the driving end cover 30 refers to the bottom surface of the driving end cover 30 when the process cartridge is in a normal working placement state.

[0084] It should be noted that when the separating slider 23 is in an initial state, the stress surface 23a can be located at the bottom side of the end cover bottom surface 30a of the driving end cover 30 only in part or in whole.

[0085] In an embodiment, referring to Figure 1 and Figure 2 The separating slider 23 is located at one end of the developing body 21, and the process cartridge comprises a driving end cover 30, the driving end cover 30 is arranged at the end of the photosensitive body 11 close to the separating slider 23, and the driving end cover 30 is connected with the developing unit 20; the bottom end of the separating slider 23 extends to the bottom side of the end cover bottom surface 30a of the driving end cover 30.

[0086] The relative height of at least part of the stress surface 23a is lower than the relative height of the photosensitive drum 12. That is to say, when the separating slider 23 is in an initial state, the bottom end of the separating slider 23 extends to the bottom side of the driving end cover 30 and extends to the bottom side of the photosensitive drum 12. In this way, the stress surface 23a can be conveniently matched with the moving piece 40, and then the developing roller 22 can be conveniently separated from the photosensitive drum 12.

[0087] The relative height of the force receiving surface 23a can be lower than the relative height of the photosensitive drum 12 in only a partial region, or the relative height of the force receiving surface 23a can be lower than the relative height of the photosensitive drum 12 in the entire region.

[0088] In one embodiment, referring to Figure 3 , Figure 5 and Figure 8 , the developing unit 20 includes a cover 24, the separation slider 23 is located at one end of the developing main body 21, the cover 24 is located at the end of the developing main body 21 where the separation slider 23 is located, and a portion of the cover 24 extends towards the bottom side to form a shielding portion 241 located on the side of the separation slider 23 away from the developing main body 21. Thus, the separation slider 23 can be shielded from the outside, thereby providing better protection.

[0089] The cover 24 and the separation slider 23 are located at the same end of the developing main body 21, the shielding portion 241 is a region of the cover 24 for shielding the separation slider 23, and when the separation slider 23 is in the initial state, at least a portion of the shielding portion 241 is located on the side of the separation slider 23 away from the developing main body 21.

[0090] In one embodiment, the processing cartridge includes a driving end cover 30 arranged at the end of the photosensitive main body 11 close to the separation slider 23, the driving end cover 30 is connected with the developing unit 20, the bottom end of the separation slider 23 extends to the bottom side of the end cover bottom surface 30a of the driving end cover 30 to form a first region, and in a projection plane parallel to the shielding portion 241, the projection of the first region is located within the projection range of the shielding portion 241.

[0091] That is, the region of the separation slider 23 extending to the bottom side of the end cover bottom surface 30a of the driving end cover 30 is located within the shielding range of the shielding portion 241. Thus, the shielding effect of the shielding portion 241 on the separation slider 23 can be greatly improved, and the protection effect can be further improved.

[0092] In one embodiment, referring to Figure 6 , Figure 8 , Figure 13 , Figure 14 and Figure 15 , the separation slider 23 further has an abutting surface 23b, the abutting surface 23b is connected with the force receiving surface 23a, and during the process of installing the processing cartridge to the image forming device, the moving member 40 abuts against the abutting surface 23b to push the separation slider 23 to move relative to the developing roller 22, and the separation slider 23 is in the second force receiving state. The separation slider 23 moves away from the moving member 40 by moving to separate from the moving member 40, the separation slider 23 is reset to the initial position, and the separation slider 23 is switched to the initial state. Thus, the processing cartridge can be better guided to be assembled to the image forming device, and the moving member 40 can be conveniently moved to the set position.

[0093] Specifically, along the moving direction of the moving member 40, the abutting surface 23b and the force receiving surface 23a are respectively located at opposite sides of the separation slider 23, and the abutting surface 23b and the force receiving surface 23a are connected.

[0094] In some embodiments, the connection between the abutting surface 23b and the force receiving surface 23a can be smoothly transitioned through an arc surface, so as to facilitate the moving member 40 to move to the set position.

[0095] The second force receiving state of the separation slider 23 is that, in the process of installing the process cartridge to the image forming device, the abutting surface 23b of the separation slider 23 is abutted by the moving member 40, so that the separation slider 23 is moved to avoid the movement of the moving member 40.

[0096] When the moving member 40 moves to be separated from the separation slider 23, the separation slider 23 can be reset to switch back to the initial state due to the absence of the abutting force of the moving member 40.

[0097] It should be noted that the specific manner of resetting the separation slider 23 can be set according to actual conditions.

[0098] For example, when the separation slider 23 is moved to be separated from the moving member 40 by actively avoiding the moving member 40, the separation slider 23 is reset to the initial position under the action of gravity. Thus, the structure of the process cartridge can be simplified, and the reset of the separation slider 23 can be realized by the self-weight of the separation slider 23.

[0099] For another example, the developing unit 20 further includes an elastic member, one end of the elastic member is arranged on the separation slider 23, and the other end of the elastic member is arranged on the developing main body 21. When the separation slider 23 is moved to be separated from the moving member 40 by actively avoiding the moving member 40, the separation slider 23 is reset to the initial position under the elastic action of the elastic member. Thus, it can be ensured that the separation slider 23 can be reset, so as to facilitate the abutting of the moving member 40 and the force receiving surface 23a of the separation slider 23, and further realize the separation of the developing roller 22 and the photosensitive drum 12.

[0100] It should be noted that, according to the different arrangement positions of the elastic member, the elastic member can be a compression spring or a tension spring.

[0101] In the process of installing the process cartridge to the image forming device, the moving member 40 pushes the separation slider 23 to move relative to the developing roller 22, and the elastic member is elastically deformed to store elastic force. When the separation slider 23 is moved to be separated from the moving member 40 by actively avoiding the moving member 40, the separation slider 23 can be reset to the initial position under the action of the elastic force stored by the elastic member.

[0102] In an embodiment, please refer to Figure 6, the developing main body 21 has a developing bottom surface 21a, and the angle between the force receiving surface 23a and the developing bottom surface 21a is greater than 45° and less than 85° when the separation slider 23 is in the initial state. For example, the angle is 45°, 60°, 75° or 85°. That is, in the initial state, the force receiving surface 23a is not perpendicular to the developing bottom surface 21a. By setting the force receiving surface 23a to be inclined to the developing bottom surface 21a, the force receiving surface 23a is inclined towards the bottom side of the process cartridge and relative to the horizontal plane.

[0103] Of course, in other embodiments, the force receiving surface 23a can also be inclined towards the bottom side of the process cartridge and relative to the horizontal plane in other ways.

[0104] For example, the outer diameter of the developing roller 22 satisfies: when the separation slider 23 is in the initial state, the force receiving surface 23a is inclined towards the bottom side of the process cartridge and relative to the horizontal plane. In this embodiment, the outer diameter of the developing roller 22 is greater than or equal to 10 mm and less than or equal to 15 mm. For example, the outer diameter of the developing roller 22 is 10 mm, 11 mm, 12 mm, 13 mm, 14 mm or 15 mm.

[0105] In this embodiment, the outer diameter of the developing roller 22 is controlled to be in the range of 10 mm to 15 mm. Compared with the developing roller 22 in the related art, the outer diameter of the developing roller 22 in this embodiment is larger. That is, after the process cartridge is installed on the image forming apparatus, in the initial state, the developing roller 22 is in contact with the photosensitive drum 12, and by increasing the outer diameter of the developing roller 22, the separation slider 23 is deflected as a whole, so that the force receiving surface 23a is inclined towards the bottom side of the process cartridge and relative to the horizontal plane.

[0106] It should be noted that the outer diameter of the developing roller 22 refers to the diameter of the outer surface of the developing roller 22, that is, the diameter of the outermost layer of the developing roller 22.

[0107] For example, the developing roller 22 includes a roller shaft and an elastomer outside the roller shaft, and the outer diameter of the developing roller 22 is the outer diameter of the surface of the elastomer.

[0108] In a specific embodiment, please refer to Figures 13 to 15 The separation slider 23 is rotatably arranged on the developing main body 21. During the process of installing the process cartridge on the image forming apparatus, the force receiving area of the moving member 40 abuts against the abutting surface 23b of the separation slider 23, so that the separation slider 23 rotates in the first rotation direction, and the free end 231 of the separation slider 23 moves upward to avoid the moving member 40. When the force receiving area of the moving member 40 continues to move to the side of the force receiving surface 23a of the separation slider 23, the separation slider 23 rotates in the second rotation direction, the free end 231 of the separation slider 23 resets, and the separation slider 23 switches to the initial state.

[0109] In an embodiment, please refer to Figures 15 to 17When the developing unit 20 is in the developing state, the separating slider 23 is in the initial state. When the developing unit 20 is in the separating state, the image forming apparatus performs the separating operation, the moving member 40 moves along the separating direction to abut against the force receiving surface 23a, and pushes the separating slider 23 to move the developing unit 20 as a whole, so that the developing roller 22 is separated from the photosensitive drum 12.

[0110] When the developing unit 20 is switched back to the developing state, the moving member 40 moves along the opposite direction to separate from the force receiving surface 23a, and the separating slider 23 is reset under the gravity and / or the elastic force of the elastic member, so that the developing roller 22 is in contact with the photosensitive drum 12 again.

[0111] In one embodiment, referring to Figure 4 and Figure 5 , the separating slider 23 protrudes on the side close to the cover 24 to form a first positioning column and a first guide column, and protrudes on the side away from the cover 24 to form a second guide column. The cover 24 has a positioning hole and a first guide slot. The developing unit 20 further comprises a fixing support 25 arranged on the developing body 21, and the fixing support 25 is located between the developing body 21 and the cover 24. The fixing support 25 has a second guide slot. The first positioning column is arranged in the positioning hole, the first guide column is arranged in the first guide slot, and the second guide column is arranged in the second guide slot. The opening size of the first guide slot is larger than the cross-sectional size of the first guide column, and the opening size of the second guide slot is larger than the cross-sectional size of the second guide column. Thus, the separating slider 23 can rotate around the first positioning column within a certain range.

[0112] In one embodiment, referring to Figure 8 , Figure 11 and Figure 12 , the image forming apparatus further comprises a positioning plate having a third guide slot extending along the separating direction. A part of the moving member 40 protrudes to form a second positioning column, and the second positioning column is arranged in the third guide slot. The moving member 40 can move along the third guide slot and rotate around the second positioning column.

[0113] In an embodiment, the rotation axis of the photosensitive drum 12 extends along a first direction. The force receiving surface 23a extends along a second direction, which intersects the first direction. When the moving member 40 abuts against the force receiving surface 23a along a separation direction, the separation slider 23 is switched to the first force receiving state to drive the developing roller 22 to move by the separation slider 23 to separate the developing roller 22 from the photosensitive drum 12, wherein the separation direction is perpendicular to the first direction. Thus, since the extending direction of the force receiving surface 23a intersects the extending direction of the rotation axis of the photosensitive drum 12, that is, the force receiving surface 23a is not parallel to the rotation axis of the photosensitive drum 12 but is relatively inclined, when the moving member 40 abuts against the force receiving surface 23a along the separation direction, if the abutting force is too large, the contact position of the moving member 40 and the force receiving surface 23a can be adaptively moved to reduce the risk of damage to the moving member 40 and the separation slider 23 caused by hard extrusion, thereby reducing the risk of damage to the process cartridge or the image forming apparatus and improving the service life of the process cartridge and the image forming apparatus.

[0114] The intersection angle between the second direction and the first direction can be set according to actual conditions.

[0115] For example, the included angle between the extending direction of the force receiving surface 23a and the first direction is greater than 0° and less than or equal to 45°, such as 10°, 20°, 30°, 40° or 45°. By controlling the intersection angle between the second direction and the first direction within the above range, the moving member 40 can better push the separation slider 23 to separate the developing roller 22 from the photosensitive drum 12.

[0116] In fact, since the moving member 40 can abut against the force receiving surface 23a along the separation direction, the extending direction of the force receiving surface 23a (i.e. the second direction) and the separation direction are also different.

[0117] In an embodiment, referring to Figure 3 , the developing body 21 has a first end 211 and a second end 212 on opposite sides along the first direction, and the separation slider 23 is located at the first end 211. From the side close to the second end 212 to the side away from the second end 212, the force receiving surface 23a is arranged to be inclined towards the side close to the rotation axis of the photosensitive drum 12.

[0118] That is, the distance between the side close to the second end 212 of the force receiving surface 23a and the rotation axis of the photosensitive drum 12 is greater, and the distance between the side away from the second end 212 of the force receiving surface 23a and the rotation axis of the photosensitive drum 12 is smaller. Thus, when the moving member 40 abuts against the force receiving surface 23a along the separation direction with too large an abutting force, the force receiving surface 23a can guide the moving member 40 to adaptively move towards the direction close to the second end 212 to reduce damage to the equipment as much as possible.

[0119] In an embodiment, referring to Figure 3 The developing body 21 has a first end 211 and a second end 212 on opposite sides along the first direction, and the separation slider 23 is located at the first end 211. From the side close to the second end 212 to the side away from the second end 212, the force receiving surface 23a is arranged to be inclined towards the side away from the rotation axis of the photosensitive drum 12.

[0120] That is, the distance between the side of the force receiving surface 23a close to the second end 212 and the rotation axis of the photosensitive drum 12 is smaller, and the distance between the side of the force receiving surface 23a away from the second end 212 and the rotation axis of the photosensitive drum 12 is larger. Thus, when the abutting force of the moving member 40 abutting against the force receiving surface 23a along the separation direction is too large, the force receiving surface 23a can guide the moving member 40 to move adaptively towards the direction away from the second end 212, so as to reduce the damage to the equipment as much as possible.

[0121] In an embodiment, the separation slider 23 is located at one end of the developing body 21, and the processing cartridge comprises a driving end cover 30, which is arranged at the end of the photosensitive body 11 close to the separation slider 23, and the driving end cover 30 is connected with the developing unit 20.

[0122] The bottom end of the separation slider 23 extends to the bottom side of the end cover bottom surface 30a of the driving end cover 30, and the end cover bottom surface 30a of the driving end cover 30 is a curved surface. Thus, the cooperation of the force receiving surface 23a and the moving member 40 can be facilitated, and the interference of the end cover bottom surface 30a of the driving end cover 30 to the movement of the moving member 40 can be reduced as much as possible.

[0123] It should be noted that the specific shape of the end cover bottom surface 30a of the driving end cover 30 is not limited. For example, along the separation direction, the opposite ends of the end cover bottom surface 30a are curved towards the top side, and the middle region is protruded towards the bottom side.

[0124] In the description of the present application, the description of the terms "in an embodiment", "in some embodiments", "in a specific embodiment", or "exemplary" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the exemplary description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the person skilled in the art can combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0125] The above descriptions are only the preferred embodiments of the present application, and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, and the like made within the principle and technical scope of the present application are included in the protection scope of the present application.

Claims

1. A process cartridge, characterized by, The processing cartridge is used to cooperate with a moving part of an image forming device, and the processing cartridge comprises: a photosensitive unit, which comprises a photosensitive main body and a photosensitive drum rotatably arranged on the photosensitive main body; a developing unit movably arranged on the photosensitive unit, the developing unit comprising a developing main body, a developing roller rotatably arranged on the developing main body, and a separation slider operatively connected to the developing main body, the separation slider having a force receiving surface for cooperating with the moving part; the separation slider has an initial state and a first force receiving state, when the separation slider is in the initial state, the force receiving surface is at least partially inclined towards a bottom side of the processing cartridge relative to a horizontal plane, and the developing roller is in contact with the photosensitive drum; when the moving part abuts against the force receiving surface, the developing roller is moved by the separation slider to separate the developing roller from the photosensitive drum, and the separation slider is switched to the first force receiving state.

2. The process cartridge according to claim 1, wherein, when the separation slider is in the initial state, the force receiving surface is inclined to the horizontal plane by an angle greater than or equal to 45° and less than or equal to 85°.

3. The process cartridge of claim 1, wherein, a bottom end of the separation slider is a free end, when the separation slider is in the initial state, a straight line distance between the free end of the separation slider and an axis of the photosensitive drum is greater than or equal to 15 mm and less than or equal to 23 mm.

4. The process cartridge according to any one of claims 1 to 3, wherein, the separation slider is located at one end of the developing main body, the processing cartridge comprises a drive end cover arranged at one end of the photosensitive main body close to the separation slider, and the drive end cover is connected to the developing unit; a bottom end of the separation slider extends to a bottom side of an end cover bottom surface of the drive end cover; at least a part of the force receiving surface is located at the bottom side of the end cover bottom surface of the drive end cover; and / or, a relative height of at least a part of the force receiving surface is lower than a relative height of the photosensitive drum.

5. The process cartridge of any one of claims 1-3, wherein, the developing unit comprises a cover, the separation slider is located at one end of the developing main body, the cover is located at one end of the developing main body where the separation slider is arranged, and a part of the cover extends towards the bottom side to form a shielding part located at a side of the separation slider away from the developing main body.

6. The process cartridge of claim 5 wherein, the processing cartridge comprises a drive end cover arranged at one end of the photosensitive main body close to the separation slider, the drive end cover is connected to the developing unit, a bottom end of the separation slider extends to a bottom side of an end cover bottom surface of the drive end cover to form a first area, and a projection of the first area in a projection plane parallel to the shielding part is located within a projection range of the shielding part.

7. The process cartridge of any one of claims 1-3, wherein, the separation slider further has an abutting surface, the abutting surface is connected to the force receiving surface, during installation of the processing cartridge to the image forming device, the moving part abuts against the abutting surface to move the separation slider relative to the developing roller, the separation slider is in a second force receiving state; the separation slider moves away from the moving part to separate from the moving part, the separation slider is reset to an initial position, and the separation slider is switched to the initial state.

8. The process cartridge of claim 7 wherein, When the separation slider moves to separate from the moving member by active avoidance of the moving member, the separation slider resets to the initial position under the action of gravity; And / or, The developing unit further comprises an elastic member, one end of the elastic member is arranged on the separation slider, and the other end of the elastic member is arranged on the developing main body, when the separation slider moves to separate from the moving member by active avoidance of the moving member, the separation slider resets to the initial position under the elastic action of the elastic member.

9. The process cartridge of any one of claims 1-3, wherein, At least part of the force receiving surface is a plane; or, The force receiving surface is a curved surface with the middle region protruding outward.

10. The process cartridge of any one of claims 1-3, wherein, The developing main body has a developing bottom surface, when the separation slider is in the initial state, the included angle between the force receiving surface and the developing bottom surface is greater than 45° and less than 85°; or, The outer diameter of the developing roller satisfies: when the separation slider is in the initial state, the force receiving surface is inclined to the bottom side of the process cartridge and relative to the horizontal plane; wherein the outer diameter of the developing roller is greater than or equal to 10 mm and less than or equal to 15 mm.

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