Processing box

Abstract

The embodiment of the utility model provides a processing box. A photosensitive drum of the photosensitive unit is rotatably arranged on a photosensitive main body, and the rotation axis of the photosensitive drum extends along a first direction. 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, the stress surface is used for being matched with the moving part, and the stress surface extends in the second direction; the second direction intersects the first direction. The separation sliding block has an initial state and a first stress state, when the separation sliding block is in the initial state, the separation sliding block is located at an initial position, and the developing roller is in contact with the photosensitive drum; when the moving part abuts against the stress face in the third direction, the separating sliding block drives the developing roller to move, so that the developing roller is separated from the photosensitive drum, and the separating sliding block is switched to the first stress state. According to the processing box, the damage risk can be reduced.

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 by cooperating with a moving part of the imaging device.

[0003] However, in the related art, the process cartridge and the moving part of the imaging device are easily damaged during cooperation, thereby reducing the service life of the device. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the main purpose of the embodiments of the present application is to provide a process cartridge capable of reducing damage risk.

[0005] To achieve the above 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, comprising a photosensitive main body and a photosensitive drum, the photosensitive drum is rotatably arranged on the photosensitive main body, and the rotation axis of the photosensitive drum extends along a first direction;

[0008] A developing unit, which is movably arranged on the photosensitive unit, and 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, the separation slider has a force receiving surface, the force receiving surface is used for cooperating with the moving part, the force receiving surface extends along a second direction, and the second direction intersects the first direction;

[0009] The separation slider has an initial state and a first force receiving state, when the separation slider is in the initial state, the separation slider is located at an initial position, and the developing roller is in contact with the photosensitive drum; when the moving part abuts against the force receiving surface along a third direction, the developing roller is driven to move by the separation slider, so that the developing roller is separated from the photosensitive drum, and the separation slider is switched to the first force receiving state; wherein the third direction is perpendicular to the first direction.

[0010] In an embodiment, the developing main body has a first end and a second end on opposite sides along the first direction, and the separation slider is located at the first end.

[0011] The force receiving surface is inclined towards the side close to the rotation axis of the photosensitive drum from the side close to the second end to the side away from the second end; or,

[0012] The force receiving surface is inclined towards the side away from the rotation axis of the photosensitive drum from the side close to the second end to the side away from the second end.

[0013] In an embodiment, the angle between the extension direction of the force receiving surface and the first direction is greater than 0° and less than or equal to 45°; and / or,

[0014] The moving member abuts against the force receiving surface along a third direction to separate the developing roller from the photosensitive drum, and the first direction is perpendicular to the third direction.

[0015] In an 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.

[0016] In an embodiment, the separation slider is located at one end of the developing main body, the process cartridge comprises a drive end cover, the drive end cover is arranged at the 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;

[0017] At least 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,

[0018] The relative height of at least part of the force receiving surface is lower than the relative height of the photosensitive drum; and / or,

[0019] The end cover bottom surface of the drive end cover is a curved surface.

[0020] In an embodiment, at least part of the force receiving surface is a plane or a curved surface.

[0021] In an embodiment, the developing unit comprises a cover, the separation slider is located at one end of the developing main body, the cover is located at the 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 at the side away from the developing main body of the separation slider.

[0022] In one embodiment, the processing cartridge comprises a driving end cover arranged at one end of the photosensitive body close to the separation slider, the driving 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 driving end cover to form a first area, in a projection plane parallel to the shielding part, the projection of the first area is located in the projection range of the shielding part.

[0023] In one embodiment, the separation slider further has an abutting surface, the abutting surface is connected with the stress surface, in the process of installing 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, the separation slider is in a second stress state; the separation slider moves to separate from the moving part by active avoidance, the separation slider is reset to the initial position, and the separation slider switches to the initial state.

[0024] In one embodiment, when the separation slider moves to separate from the moving part by active avoidance, the separation slider is reset to the initial position under the action of gravity; and / or,

[0025] 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 body, when the separation slider moves to separate from the moving part by active avoidance, the separation slider is reset to the initial position under the elastic action of the elastic member.

[0026] This application provides a processing cartridge, which includes a developing unit and a photosensitive unit. A photosensitive drum is rotatably mounted on a photosensitive body, and the rotation axis of the photosensitive drum extends along a first direction. The developing unit includes a developing body, a developing roller, and a separating slider. The developing roller is rotatably mounted on the developing body, and the separating slider is operably connected to the developing body. The separating slider has a force-receiving surface for cooperating with a moving member, and the force-receiving surface extends along a second direction. The separating slider has an initial state and a first force-receiving state. When the separating slider is in the initial state, it is in its initial position, and the developing roller is in contact with the photosensitive drum. When the moving member abuts against the force-receiving surface along a third direction, it drives the developing roller to move via the separating slider, causing the developing roller to separate from the photosensitive drum, and the separating slider switches to the first force-receiving state. Thus, on the one hand, the separating slider can cooperate with the moving member to switch between the initial state and the first force-receiving state, thereby realizing the switching between contact and separation between the developing roller and the photosensitive drum. On the other hand, since the extension direction of the force-bearing surface intersects the extension direction of the rotation axis of the photosensitive drum, that is, the force-bearing surface and the rotation axis of the photosensitive drum are not parallel, but relatively inclined. Therefore, when the moving part abuts against the force-bearing surface in a third direction, if the abutment force is too large, the contact position between the moving part and the force-bearing surface can be adaptively moved due to the relatively inclined setting of the force-bearing surface. This reduces the risk of damage to the moving part and the separation slider caused by hard compression, thereby reducing the risk of damage to the processing cartridge or imaging equipment and improving the service life of the processing cartridge and imaging equipment. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a processing box according to an embodiment of this application;

[0028] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0029] Figure 3 for Figure 1 Exploded view of the processing box;

[0030] Figure 4 for Figure 1 A structural schematic diagram of the central processing unit from another perspective;

[0031] Figure 5 for Figure 4 A magnified view of a section at point B in the middle;

[0032] Figure 6 for Figure 5 A schematic diagram of the structure of the separation slider;

[0033] Figure 7 In another embodiment of the processing box of this application, with Figure 4 A schematic diagram of the structure corresponding to point B in the middle;

[0034] Figure 8 For Figure 7 the structure diagram of the separating slider;

[0035] Figure 9 For Figure 3 the structure diagram of the protective cover;

[0036] Figure 10 For Figure 4 the sectional view at C-C, in which the arrow D represents the straight-line distance between the free end and the shaft center of the photosensitive drum;

[0037] Figure 11 For Figure 1 the schematic diagram of the cooperation between the processing cartridge and the moving member;

[0038] Figure 12 For Figure 11 the structure diagram of the moving member;

[0039] Figure 13 For Figure 11 the structure diagram of the moving member from another perspective;

[0040] Figure 14 For Figure 11 the schematic diagram of the cooperation between the processing cartridge and the moving member during the installation process, in which part of the processing cartridge is hidden, L1 represents the rotation center of the developing unit, L2 represents the rotation center of the separating slider, the abutting surface of the moving member and the separating slider abut, and the separating slider is in the second force state;

[0041] Figure 15 For Figure 11 the schematic diagram of the cooperation between the processing cartridge and the moving member during the installation process, in which the abutting surface of the moving member and the separating slider abut, and the separating slider is in the position avoiding the movement of the moving member, and the separating slider is in the second force state;

[0042] Figure 16 For Figure 11 the schematic diagram of the cooperation between the processing cartridge and the moving member during the developing operation, in which the separating slider is in the initial state;

[0043] Figure 17 For Figure 11 the schematic diagram of the cooperation between the processing cartridge and the moving member after the developing operation is stopped, in which the moving member and the separating slider are in contact;

[0044] Figure 18 For Figure 11 the schematic diagram of the cooperation between the processing cartridge and the moving member after the developing operation is stopped, in which the moving member and the separating slider abut, and the separating slider is in the first force state.

[0045] Reference Signs List

[0046] 10, photosensitive unit; 11, photosensitive body; 12, photosensitive drum; 20, developing unit; 21, developing body; 211, first end; 212, second end; 22, developing roller; 23, separation slider; 23a, force receiving surface; 23b, abutting surface; 231, free end; 24, protective cover; 241, shielding portion; 25, elastic member; 26, fixing bracket; 30, driving end cover; 30a, end cover bottom surface; 40, moving member. DETAILED DESCRIPTION

[0047] In the present application, the "first direction", "second direction" and "third direction" orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and the "top" and "bottom" orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It should be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. Figure 5 The "top" and "bottom" orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. It should be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. Figure 10

[0048] In the description of the embodiments of the present application, the technical terms "first", "second", "third" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the technical features indicated. In the description of the embodiments of the present application, the meaning of "multiple" is two and more than two, unless otherwise explicitly and specifically limited.

[0049] Reference herein to "an embodiment" 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 occurrence of the phrase in various places in the specification is not necessarily all referring to the same embodiment, nor is it necessarily referring to a particular embodiment in an exclusive sense. It is explicitly and implicitly understood that the embodiments described herein are capable of combination.

[0050] An embodiment of the present application provides a process cartridge, please refer to Figure 1 , Figure 3 and Figure 11 , the process cartridge is used in cooperation with the moving member 40 of the image forming device, and the process cartridge comprises a photosensitive unit 10 and a developing unit 20.

[0051] Please refer to Figure 4 and Figure 5 , the photosensitive unit 10 comprises a photosensitive body 11 and a photosensitive drum 12, the photosensitive drum 12 is rotatably arranged on the photosensitive body 11, and the rotation axis of the photosensitive drum 12 extends along the first direction. ​

[0052] Referring to Figure 5 and Figure 7 The developing unit 20 is movably arranged on the photosensitive unit 10, the developing unit 20 comprises a developing main body 21, a developing roller 22 rotatably arranged on the developing main body 21, and a separation slider 23 operatively connected to the developing main body 21, the separation slider 23 has a force receiving surface 23a for cooperating with the moving member 40, the force receiving surface 23a extends along a second direction, the second direction intersects the first direction.

[0053] Referring to Figures 16 to 18 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 separation slider 23 is located at an initial position, 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 along a third direction, 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 switches to the first force receiving state; wherein the third direction is perpendicular to the first direction.

[0054] 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 comprises a moving member 40 which can be used to cooperate 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.

[0055] 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.

[0056] 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.

[0057] In fact, the developing main body 21 is movable relative to the photosensitive unit 10, by cooperating the separation slider 23 with the moving member 40, the relative movement between the developing unit 20 and the photosensitive unit 10 can be achieved, and thus the developing roller 22 and the photosensitive drum 12 can be switched between contact and separation.

[0058] 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.

[0059] 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 member 40 to move the developing roller 22. The specific arrangement mode is not limited.

[0060] For example, the separation slider 23 can be movably arranged on the developing body 21, i.e. the separation slider 23 can move relative to the developing body 21, such as rotation, translation, other movable manner or a combination of multiple movable manners. However, no matter what kind of movable manner the separation slider 23 adopts, it must meet the requirement that it can separate the developing roller 22 from the photosensitive drum 12 when the moving piece 40 abuts against the force receiving surface 23a.

[0061] 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.

[0062] The force receiving surface 23a of the separation slider 23 is used to cooperate with the moving piece 40, and the specific shape thereof is not limited.

[0063] For example, the force receiving surface 23a of the separation slider 23 is a plane. Thus, it is convenient for processing and manufacturing.

[0064] For another example, the force receiving surface 23a of the separation slider 23 is a curved surface. Thus, when the abutting force applied by the moving piece 40 is too large, the contact position of the moving piece 40 and the force receiving surface 23a can be adaptively moved.

[0065] For example, the force receiving surface 23a is an outwardly convex arc surface. For another example, the force receiving surface 23a is a wavy curved surface.

[0066] It should be noted that no matter what kind of type the force receiving surface 23a of the separation slider 23 is, it should extend along the second direction. That is, the extension direction of the force receiving surface 23a intersects with the extension direction of the rotation axis of the photosensitive drum 12, so that when the abutting force applied by the moving piece 40 is too large, the moving piece 40 can be adaptively moved to reduce the impact and reduce the damage.

[0067] The intersection angle between the second direction and the first direction can be set according to the actual situation.

[0068] For example, the included angle between the extension direction of the force receiving surface 23a and the first direction (see the angle α in Figure 5 and Figure 7 ) is greater than 0° and less than or equal to 45°. For example, 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 piece 40 can better push the separation slider 23 to separate the developing roller 22 from the photosensitive drum 12.

[0069] 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 apply force to the separation slider 23.

[0070] The 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 in the third direction to transmit force through the separation slider 23, thereby separating the developing roller 22 from the photosensitive drum 12.

[0071] In fact, when the process cartridge is in the 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 the developing operation, the image forming apparatus moves the moving member 40 in the third direction to abut against and push the force-receiving surface 23a of the separation slider 23, thereby separating the developing roller 22 from the photosensitive drum 12.

[0072] 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 against the force-receiving surface 23a of the separation slider 23, thereby bringing the developing roller 22 into contact with the photosensitive drum 12.

[0073] In fact, since the moving member 40 can abut against the force-receiving surface 23a in the third direction, the extension direction (i.e., the second direction) of the force-receiving surface 23a and the third direction are not the same.

[0074] It should be noted that the moving member 40 abuts against the force-receiving surface 23a in the third direction, 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 third 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 third direction to abut against the force-receiving surface 23a.

[0075] In the process cartridge provided in the embodiments of the present application, the rotation axis of the photosensitive drum 12 extends along a first direction, the separation slider 23 is movably arranged on the developing main body 21, the separation slider 23 has a force receiving surface 23a for cooperating with the moving member 40, and the force receiving surface 23a extends along a second direction. 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 separation slider 23 is located at an initial position, 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 along a third direction, the developing roller 22 is moved by the separation slider 23 to be separated from the photosensitive drum 12, and the separation slider 23 is switched 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, so as to switch the developing roller 22 between the contact with the photosensitive drum 12 and the separation from the photosensitive drum 12. On the other hand, since the extending direction of the force receiving surface 23a intersects with 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. In this way, when the moving member 40 abuts against the force receiving surface 23a along the third direction, if the abutting force is too large, since the force receiving surface 23a is arranged in a relatively inclined manner, the contact position of the moving member 40 and the force receiving surface 23a can be adaptively moved, so as to reduce the damage risk of the moving member 40 and the separation slider 23 caused by hard extrusion, thereby reducing the damage risk of the process cartridge or the image forming apparatus, and improving the service life of the process cartridge and the image forming apparatus.

[0076] In an embodiment, referring to Figures 3 to 6 , the developing main 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.

[0077] 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 larger, 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. In this way, when the abutting force of the moving member 40 abutting against the force receiving surface 23a along the third direction is too large, the force receiving surface 23a can guide the moving member 40 to be adaptively moved towards the side close to the second end 212, so as to reduce the damage to the apparatus as much as possible.

[0078] In an embodiment, referring to Figure 3 , Figure 7 and Figure 8The developing body 21 has a first end 211 and a second end 212 on opposite sides along the first direction, and the separating 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.

[0079] 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 part 40 abutting against the force receiving surface 23a is too large along the third direction, the force receiving surface 23a can guide the moving part 40 to move adaptively in the direction away from the second end 212, so as to reduce the damage to the equipment as much as possible.

[0080] In an embodiment, referring to Figure 2 and Figure 10 , the bottom end of the separating slider 23 is a free end 231, and when the separating slider 23 is in the initial state, the straight-line distance (see arrow D in Figure 10 ) between the free end 231 of the separating slider 23 and the axis of the photosensitive drum 12 is greater than or equal to 15 mm and less than or equal to 23 mm. Thus, the distance between the two is controlled within the above range, so that even if the process cartridge works for a long time and the distance between the moving part 40 and the separating slider 23 becomes larger, the moving part 40 can be prevented from being separated from the separating slider 23 during the movement of the separating slider 23 driving the developing roller 22, so that the effective separation of the photosensitive drum 12 and the developing roller 22 can be ensured.

[0081] The free end 231 is the bottom end of the separating slider 23, which refers to the distal end with higher degree of freedom. For example, the separating 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.

[0082] The specific value of the straight-line distance between the free end 231 of the separating 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.

[0083] 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 includes a driving end cover 30, which 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.

[0084] The bottom end of the separation slider 23 extends to the bottom side of the end cover bottom surface 30a of the drive end cover 30, and at least a partial area of the force receiving surface 23a is located at the bottom side of the end cover bottom surface 30a of the drive end cover 30. That is, the bottom end of the separation slider 23 extends out of the coverage range of the drive end cover 30. In this way, the force receiving surface 23a can be conveniently matched with the moving member 40, and the developing roller 22 can be conveniently separated from the photosensitive drum 12.

[0085] Specifically, the separation slider 23 and the drive end cover 30 are located at the same end of the process cartridge. The drive 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.

[0086] The bottom end of the separation slider 23 refers to the bottom area of the separation slider 23 when the process cartridge is in a normal working placement state and the moving member 40 does not exert a force on the separation slider 23.

[0087] The end cover bottom surface 30a of the drive end cover 30 refers to the bottom surface of the drive end cover 30 when the process cartridge is in a normal working placement state.

[0088] It should be noted that when the separation slider 23 is in the initial state, the force receiving surface 23a can be located at the bottom side of the end cover bottom surface 30a of the drive end cover 30 only in a partial area, or can be located at the bottom side of the end cover bottom surface 30a of the drive end cover 30 in the entire area.

[0089] In an embodiment, referring to Figure 1 and Figure 2 , the separation slider 23 is located at one end of the developing main body 21, the process cartridge includes the drive end cover 30, the drive end cover 30 is arranged at the end of the photosensitive main body 11 close to the separation slider 23, and the drive end cover 30 is connected with the developing unit 20.

[0090] The bottom end of the separation slider 23 extends to the bottom side of the end cover bottom surface 30a of the drive end cover 30, and at least a partial area of the force receiving surface 23a is located at the bottom side of the end cover bottom surface 30a of the drive end cover 30. That is, the bottom end of the separation slider 23 extends out of the coverage range of the drive end cover 30. In this way, the force receiving surface 23a can be conveniently matched with the moving member 40, and the developing roller 22 can be conveniently separated from the photosensitive drum 12.

[0091] The relative height of the force receiving surface 23a can be lower than the relative height of the photosensitive drum 12 only in a partial area, or can be lower than the relative height of the photosensitive drum 12 in the entire area.

[0092] In an embodiment, referring to Figure 1 , Figure 2 and Figure 10The separating slider 23 is located at one end of the developing main body 21. The processing cartridge includes a driving end cover 30 arranged at one end of the photosensitive main body 11 close to the separating slider 23, and the driving end cover 30 is connected with the developing unit 20.

[0093] 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, and the end cover bottom surface 30a of the driving end cover 30 is a curved surface. Thus, the force receiving surface 23a can be matched with the moving member 40, and the movement of the moving member 40 can be interfered by the end cover bottom surface 30a of the driving end cover 30 as little as possible.

[0094] 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, the opposite ends of the end cover bottom surface 30a are curved towards the top side in the third direction, and the middle region is protruded towards the bottom side.

[0095] In one embodiment, referring to Figure 3 , Figure 9 and Figure 11 , the developing unit 20 includes a cover 24, the separating slider 23 is located at one end of the developing main body 21, and the cover 24 is located at one end of the developing main body 21 where the separating slider 23 is arranged. Part of the cover 24 extends towards the bottom side to form a shielding part 241 located on the side of the separating slider 23 away from the developing main body 21. Thus, the separating slider 23 can be shielded from the outside, and thus better protection can be achieved.

[0096] Herein, the cover 24 and the separating slider 23 are located at the same end of the developing main body 21, the shielding part 241 is a region of the cover 24 for shielding the separating slider 23, and when the separating slider 23 is in the initial state, at least part of the shielding part 241 is located on the side of the separating slider 23 away from the developing main body 21.

[0097] In one embodiment, the processing cartridge includes the driving end cover 30 arranged at one end of the photosensitive main 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 to form a first region. In a projection plane parallel to the shielding part 241, the projection of the first region is located within the projection range of the shielding part 241.

[0098] That is, the region of the separating 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 part 241. Thus, the shielding effect of the shielding part 241 on the separating slider 23 can be greatly improved, and the protection effect can be further improved.

[0099] Referring to Figure 11 , the first region is Figure 11 the region of the separating slider 23 shielded by the shielding part 241.

[0100] In one embodiment, referring to Figure 2 , Figure 14 and Figure 15 , the separation slider 23 further has an abutting surface 23b, which is in contact with the force receiving surface 23a. During the process of mounting the process 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 to avoid the moving member 40 to separate from the moving member 40, and the separation slider 23 is reset to the initial position, and the separation slider 23 is switched to the initial state. Thus, the process cartridge can be better guided to be mounted to the image forming device, and the moving member 40 can be moved to the set position conveniently.

[0101] Specifically, along the third direction, 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 is in contact with the force receiving surface 23a.

[0102] In some embodiments, the abutting surface 23b and the force receiving surface 23a can be smoothly connected by an arc surface to facilitate the moving member 40 to move to the set position.

[0103] The second force receiving state of the separation slider 23 is that the abutting surface 23b of the separation slider 23 is abutted by the moving member 40 during the process of mounting the process cartridge to the image forming device, so that the separation slider 23 moves to avoid the movement of the moving member 40.

[0104] When the moving member 40 moves to separate 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.

[0105] It should be noted that the specific manner of resetting the separation slider 23 can be set according to actual conditions.

[0106] For example, when the separation slider 23 moves to separate from the moving member 40 by moving to avoid 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 only by the weight of the separation slider 23.

[0107] For example, referring to Figure 10The developing unit 20 further comprises an elastic member 25, one end of the elastic member 25 is arranged on the separation slider 23, and the other end of the elastic member 25 is arranged on the developing main body 21, when the separation slider 23 is moved to be separated from the moving member 40 by the moving member 40, the separation slider 23 is reset to the initial position under the elastic action of the elastic member 25. Thus, it can be ensured that the separation slider 23 can be reset, so as to facilitate the abutment of the moving member 40 and the stress surface 23a of the separation slider 23, and then the separation of the developing roller 22 and the photosensitive drum 12 is realized.

[0108] It should be noted that, according to the different arrangement positions of the elastic member 25, the elastic member 25 can be a compression spring or a tension spring.

[0109] In the process of installing the process cartridge into 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 25 is elastically deformed to store elastic force, when the separation slider 23 is separated from the moving member 40 by 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 25.

[0110] In a specific embodiment, referring to Figures 14 to 16 The separation slider 23 is rotatably arranged on the developing main body 21, in the process of installing the process cartridge into the image forming device, the force application area of the moving member 40 abuts against the abutment surface 23b of the separation slider 23, so as to make the separation slider 23 rotate 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 application area of the moving member 40 continues to move to the side of the stress 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 is reset, and the separation slider 23 switches to the initial state.

[0111] In an embodiment, referring to Figures 16 to 18 When the process cartridge is in developing work, the separation slider 23 is in the initial state, and when the process cartridge stops working, the image forming device performs a separation action, the moving member 40 moves in the third direction to abut against the stress surface 23a, and the moving member 40 pushes the separation slider 23 to drive the whole developing unit 20 to move, so that the developing roller 22 is away from the photosensitive drum 12.

[0112] When the process cartridge switches back to the developing work, the moving member 40 moves in the opposite direction to be separated from the stress surface 23a, and the separation slider 23 is reset under the action of the self-weight and / or the elasticity of the elastic member 25, and the developing roller 22 recontacts the photosensitive drum 12.

[0113] In an embodiment, referring to Figure 6The separating slider 23 is protruded on one side of the separating slider 23 close to the cover 24 to form a first positioning column and a first guide column, and is protruded on the other side of the separating slider 23 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 26 arranged on the developing main body 21, and the fixing support 26 is located between the developing main body 21 and the cover 24. The fixing support 26 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 greater than the cross-sectional size of the first guide column, and the opening size of the second guide slot is greater 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.

[0114] In an embodiment, referring to Figures 11 to 13 The imaging device further comprises a positioning plate having a third guide slot extending along a third direction. A portion of the moving member 40 is protruded 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.

[0115] In an embodiment, when the separating slider 23 is in the initial state, the force receiving surface 23a is inclined relative to the horizontal plane and faces the bottom side of the process cartridge. That is, in the initial state, the force receiving surface 23a does not extend along the vertical direction, nor faces the top side of the process cartridge, but faces the bottom side. Moreover, the force receiving surface 23a is not parallel to the horizontal plane, but is inclined relative to the horizontal plane.

[0116] By adopting the inclined downward arrangement, the relative movement between the force receiving surface 23a and the moving member 40 can be guided, so that the process cartridge and the moving member 40 can be separated in the separating process, and the force applied in the separating process can be reduced.

[0117] It should be noted that the inclination angle between the force receiving surface 23a and the horizontal plane can be set according to actual conditions.

[0118] For example, when the separating slider 23 is in the initial state, the inclination angle between the force receiving surface 23a and the horizontal plane is greater than or equal to 45° and less than or equal to 85°, such as 45°, 60°, 75° or 85°. By controlling the inclination angle between the force receiving surface 23a and the horizontal plane within the above range, the process cartridge and the moving member 40 can be better separated in the separating process.

[0119] In fact, the inclination angle between the force receiving surface 23a and the vertical direction is greater than or equal to 5° and less than or equal to 45°, such as 5°, 15°, 30° or 45°.

[0120] Note that the force receiving surface 23a of the separation slider 23 is inclined toward the bottom side of the process cartridge and relative to the horizontal plane, regardless of the type of the force receiving surface 23a. The force receiving surface 23a is inclined toward the bottom side of the process cartridge and relative to the horizontal plane when the separation slider 23 is in the initial state.

[0121] In one embodiment, the developing body 21 has a developing bottom surface, and the force receiving surface 23a is inclined to the developing bottom surface by an angle greater than 0° and less than 90° when the separation slider 23 is in the initial state. That is, the force receiving surface 23a is not perpendicular to the developing bottom surface in the initial state. By inclining the force receiving surface 23a to the developing bottom surface, the force receiving surface 23a is inclined toward the bottom side of the process cartridge and relative to the horizontal plane.

[0122] Of course, in other embodiments, the force receiving surface 23a can be inclined toward the bottom side of the process cartridge and relative to the horizontal plane in other ways.

[0123] For example, the outer diameter of the roller shaft of the developing roller 22 satisfies the condition that the force receiving surface 23a is inclined toward the bottom side of the process cartridge and relative to the horizontal plane when the separation slider 23 is in the initial state. The outer diameter of the roller shaft of the developing roller 22 is greater than or equal to 10 mm and less than or equal to 15 mm. For example, 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, or 15 mm.

[0124] In the present embodiment, the outer diameter of the roller shaft 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 roller shaft of the developing roller 22 in the present embodiment is greater. That is, after the process cartridge is installed in the image forming apparatus, the developing roller 22 is in contact with the photosensitive drum 12 in the initial state, and the outer diameter of the roller shaft of the developing roller 22 is increased, so that the separation slider 23 is deflected as a whole, and the force receiving surface 23a is inclined toward the bottom side of the process cartridge and relative to the horizontal plane.

[0125] In the description of the present application, the description with reference to the terms "in one embodiment", "in some embodiments", "in a specific embodiment", or "exemplary" and the like means that the specific features, structures, materials or characteristics described in connection 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 directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, 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.

[0126] 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, the photosensitive unit comprising a photosensitive body and a photosensitive drum, the photosensitive drum being rotatably arranged on the photosensitive body, an axis of rotation of the photosensitive drum extending along a first direction; a developing unit, the developing unit being movably arranged on the photosensitive unit, the developing unit comprising a developing body, a developing roller and a separation slider, the developing roller being rotatably arranged on the developing body, the separation slider being operatively connected to the developing body, the separation slider having a force receiving surface, the force receiving surface being used to cooperate with the moving part, the force receiving surface extending along a second direction, the second direction intersecting the first direction; the separation slider having an initial state and a first force receiving state, when the separation slider is in the initial state, the separation slider is located at an initial position, the developing roller is in contact with the photosensitive drum; when the moving part abuts against the force receiving surface along a third direction, the developing roller is moved by the separation slider to separate the developing roller from the photosensitive drum, the separation slider is switched to the first force receiving state; wherein the third direction is perpendicular to the first direction.

2. The process cartridge according to claim 1, wherein, the developing body having a first end and a second end on opposite sides along the first direction, the separation slider being located at the first end; from a side close to the second end to a side away from the second end, the force receiving surface is arranged to be inclined towards a side close to the axis of rotation of the photosensitive drum; or from a side close to the second end to a side away from the second end, the force receiving surface is arranged to be inclined towards a side away from the axis of rotation of the photosensitive drum.

3. The process cartridge of claim 1, wherein, an angle between an extension direction of the force receiving surface and the first direction is greater than 0° and less than or equal to 45°.

4. 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.

5. The process cartridge according to any one of claims 1-4, wherein, the separation slider is located at one end of the developing body, the processing cartridge comprising a drive end cover, the drive end cover being arranged at an end of the photosensitive body close to the separation slider, and the drive end cover being connected to the developing unit; a bottom end of the separation slider extending to a bottom side of an end cover bottom surface of the drive end cover; at least a partial area 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 partial area of the force receiving surface is lower than a relative height of the photosensitive drum; and / or the end cover bottom surface of the drive end cover is a curved surface protruding towards the bottom side.

6. The process cartridge of any one of claims 1-4, wherein, at least a partial area of the force receiving surface is a plane or a curved surface.

7. The process cartridge of any one of claims 1-4, wherein, the developing unit comprising a cover, the separation slider being located at one end of the developing body, the cover being located at the end of the developing body where the separation slider is arranged, a partial area of the cover extending towards the bottom side to form a shielding part located at a side of the separation slider away from the developing body.

8. The process cartridge of claim 7 wherein, The processing box comprises a driving end cover arranged at one end of the photosensitive main body close to the separation slider, the driving 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 driving end cover to form a first area, in the projection plane parallel to the shielding part, the projection of the first area is located in the projection range of the shielding part.

9. The process cartridge of any one of claims 1-4, wherein, The separation slider also has an abutting surface, the abutting surface is connected with the stress surface, in the process of installing the processing box to the imaging equipment, the moving part abuts against the abutting surface to push the separation slider to move relative to the developing roller, the separation slider is in a second stress state; the separation slider moves to separate from the moving part by active avoidance, the separation slider resets to the initial position, and the separation slider switches to the initial state.

10. The process cartridge of claim 9 wherein, When the separation slider moves to separate from the moving part by active avoidance, the separation slider resets to the initial position under the action of gravity; And / or, The developing unit also 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 part by active avoidance, the separation slider resets to the initial position under the elastic action of the elastic member.

Images