Processing box

Abstract

The embodiment of the utility model provides a processing box. A separation mechanism of the processing box is operably arranged on a developing main body, the separation mechanism is provided with a separation surface, and a power receiving part is in driving connection with the separation mechanism. The separation mechanism has an initial state and a standby state, when the separation mechanism is in the initial state, the separation surface is located at a first position for avoiding the moving part, and the developing roller is in contact with the photosensitive drum; when the power receiving part works, the separating mechanism moves relative to the developing unit under the driving action of the power receiving part, so that the separating surface moves to a second position from a first position, the second position is located in the moving range of the moving part, and the separating mechanism is switched to a standby state; in a standby state, when the moving part moves to push the separating surface, the separating mechanism drives the developing unit to move relative to the photosensitive unit under the pushing action of the moving part, so that the developing roller is separated from the photosensitive drum. According to the processing box provided by the embodiment of the invention, the abrasion to the moving part 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 printer comprises a developing roller and a photosensitive drum, in the related art, the separating block of the process cartridge and the photosensitive drum are located on the same side of the moving part of the printer. After the printer is started, the moving part needs to pass the separating block to move to the working position between the separating block and the photosensitive drum.

[0003] Since the moving part and the separating block need to interfere in the up-down direction to push the separating block to drive the developing roller away from the photosensitive drum, when the moving part passes the separating block, the separating block of the process cartridge will press down the moving part, and the moving part will be bounced up after passing the separating block. However, in the related art, the separating block of the process cartridge is easy to cause wear to the moving part during the process of pressing down the moving part, thereby easily causing damage to the moving part. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the main purpose of the embodiments of the present application is to provide a process cartridge which reduces wear to the moving part.

[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 developing unit, which comprises a developing main body, a power receiving part and a developing roller, the developing roller and the power receiving part are movably arranged on the developing main body;

[0008] A photosensitive unit, which comprises a photosensitive main body and a photosensitive drum, the photosensitive drum is movably arranged on the photosensitive main body, and the photosensitive main body is movably connected with the developing main body;

[0009] A separating mechanism, which is movably arranged on the developing main body, the separating mechanism has a separating surface, and the power receiving part is drivingly connected with the separating mechanism;

[0010] The separation mechanism has an initial state and a standby state, when the separation mechanism is in the initial state, the separation surface is in a first position avoiding the moving member, and the developing roller and the photosensitive drum are in contact; when the power receiving portion is working, the separation mechanism is driven by the power receiving portion to move relative to the developing unit, so that the separation surface moves from the first position to a second position within the moving range of the moving member, and the separation mechanism switches to the standby state; in the standby state, when the moving member moves to push the separation surface, the separation mechanism drives the developing unit to move relative to the photosensitive unit under the pushing action of the moving member, so that the developing roller and the photosensitive drum are separated.

[0011] In an embodiment, when the processing cartridge is installed on the image forming device, and the separation mechanism is in any one of the initial state and the standby state, the separation surface and the photosensitive drum are located on opposite sides of the moving member along the front-rear direction of the processing cartridge.

[0012] In an embodiment, along the front-rear direction of the processing cartridge, when the separation surface is in the first position, the distance between the separation surface and the photosensitive drum is a first distance; when the separation surface is in the second position, the distance between the separation surface and the photosensitive drum is a second distance, and the first distance is greater than the second distance.

[0013] In an embodiment, the separation mechanism includes a separation gear and a movable assembly, the separation gear is slidably arranged on the developing main body and rotatable relative to the developing main body, the separation gear is in meshing transmission with the power receiving portion, and the movable assembly has the separation surface, the movable assembly is movably arranged on the developing main body and abuts against the separation gear.

[0014] When the power receiving portion is working, the separation gear rotates and slides relative to the developing main body under the driving action of the power receiving portion, and the separation gear pushes the movable assembly to switch the separation surface from the first position to the second position.

[0015] In an embodiment, the separation gear includes a gear main body, the gear main body is in meshing transmission with the power receiving portion; a part of the developing main body is recessed to form a first guide groove, the first guide groove extends towards the side close to the movable assembly along the rotation direction of the power receiving portion, the separation gear further includes a first guide column, the first guide column is arranged on the side of the gear main body close to the developing main body and slidably arranged in the first guide groove.

[0016] In one embodiment, the developing unit further comprises a cover arranged on the developing body, the separating mechanism is arranged between the cover and the developing body, a portion of the cover is recessed to form a second guide groove, the separating gear further comprises a second guide post arranged on a side of the gear body away from the developing body and slidably arranged in the second guide groove, and the movable assembly abuts against at least one of the first guide post and the second guide post.

[0017] In one embodiment, the movable assembly comprises a movable rod and a separating block, the separating block has the separating surface, one end of the movable rod is rotatably arranged on the developing body and abuts against the separating gear, and the separating block is movably arranged at the other end of the movable rod; the separating block is in sliding connection with the developing body in the front-rear direction of the process cartridge.

[0018] When the power receiving portion works, the separating gear pushes the movable rod to switch the separating surface from the first position to the second position in the front-rear direction.

[0019] In one embodiment, a portion of the developing body is recessed to form a third guide groove, a portion of a side of the separating block close to the developing body is protruded to form a third guide post, the third guide post is slidably arranged in the third guide groove, and the third guide groove extends in the front-rear direction to guide the separating block to slide in the front-rear direction; and / or,

[0020] a portion of an end of the movable rod away from the separating gear is recessed to form a fourth guide groove, a portion of a side of the separating block away from the developing body is protruded to form a fourth guide post, the fourth guide post is slidably arranged in the fourth guide groove, and the fourth guide groove extends in a direction different from the front-rear direction.

[0021] In one embodiment, the separating mechanism further comprises a reset spring connected with the movable assembly and the developing unit respectively; when the power receiving portion withdraws the driving force from the separating gear, the separating mechanism is switched to the initial state under the elastic force of the reset spring.

[0022] In one embodiment, the process cartridge further comprises an elastic member arranged between the photosensitive body and the developing body; when the power receiving portion withdraws the driving force from the separating gear, the separating mechanism is switched to the initial state, and the developing body is reset under the elastic force of the elastic member to make the developing roller and the photosensitive drum contact.

[0023] This application provides a processing cartridge, which includes a developing unit, a photosensitive unit, and a separation mechanism. The separation mechanism is operably mounted on the developing body and has a separation surface. A power receiving unit is driven to the separation mechanism. The separation mechanism has an initial state and a standby state. In the initial state, the separation surface is in a first position, avoiding the moving member, and the developing roller and photosensitive drum are in contact. When the power receiving unit is activated, the separation mechanism moves relative to the developing unit under the driving action of the power receiving unit, causing the separation surface to move from the first position to a second position. The second position is within the movement range of the moving member, and the separation mechanism switches to the standby state. In the standby state, when the moving member pushes the separation surface, the separation mechanism, under the pushing action of the moving member, drives the developing unit to move relative to the photosensitive unit, causing the developing roller and photosensitive drum to separate. That is, when the power receiving unit is not activated, the separation surface avoids the movement of the moving member; that is, the separation surface is outside the movement range of the moving member and not between the moving member and the photosensitive drum. Therefore, when the imaging equipment starts up, during the process of the moving part moving to the working position, since the power receiving unit is not activated, the separation mechanism will not interfere with the movement of the moving part, and will not press down on the moving part. This reduces wear on the moving part and minimizes the risk of damage. Furthermore, when it is necessary to separate the developing roller and the photosensitive drum, the power receiving unit can be activated to move the separation surface of the separation mechanism from the first position to the second position. This allows the moving part to drive the developing unit relative to the photosensitive unit by moving the pushing separation mechanism, thereby fulfilling the requirement for separating the developing roller and the photosensitive drum. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a processing box according to an embodiment of this application;

[0025] Figure 2 for Figure 1 Exploded view of the processing box;

[0026] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0027] Figure 4 for Figure 2 Schematic diagram of the split gear structure;

[0028] Figure 5 for Figure 2 Schematic diagram of the structure of the middle separation block;

[0029] Figure 6 for Figure 2 Schematic diagram of the movable rod in the middle;

[0030] Figure 7 for Figure 2Structure diagram of the protective cover

[0031] Figure 8 For Figure 1 Structure diagram of the developing unit from another perspective

[0032] Figure 9 For Figure 1 Structure diagram of the process cartridge from another perspective

[0033] Figure 10 For Figure 9 Structure diagram of the process cartridge; the protective cover is hidden in the diagram; the setting positions of the photosensitive drum and the developing roller are shown by dotted lines in the diagram, the separating mechanism is in the initial state, the power receiving portion is not working, and the moving member is in the initial position at the rear position

[0034] Figure 11 For Figure 9 Structure diagram of the process cartridge; the protective cover is hidden in the diagram; the setting positions of the photosensitive drum and the developing roller are shown by dotted lines in the diagram, the separating mechanism is in the initial state, the power receiving portion is not working, and the moving member is in the working position at the front position

[0035] Figure 12 For Figure 9 Structure diagram of the process cartridge; the protective cover is hidden in the diagram; the setting positions of the photosensitive drum and the developing roller are shown by dotted lines in the diagram, the separating mechanism is in the standby state, the power receiving portion is working, and the moving member is in the working position at the front position

[0036] Figure 13 For Figure 9 Structure diagram of the process cartridge; the protective cover is hidden in the diagram; the setting positions of the photosensitive drum and the developing roller are shown by dotted lines in the diagram, the power receiving portion is working, and the moving member pushes the separating mechanism backward.

[0037] Explanation of reference numerals

[0038] 10, developing unit; 11, developing main body; 11a, first guide groove; 11b, third guide groove; 12, power receiving portion; 13, developing roller; 14, protective cover; 14a, second guide groove; 20, photosensitive unit; 21, photosensitive main body; 22, photosensitive drum; 30, separating mechanism; 30a, separating surface; 31, separating gear; 311, gear main body; 312, first guide column; 313, second guide column; 32, movable assembly; 321, movable rod; 321a, fourth guide groove; 322, separating block; 3221, third guide column; 3222, fourth guide column; 33, return spring; 40, elastic member; 50, moving member. DETAILED DESCRIPTION

[0039] In the present application, the front-rear direction orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. Figure 10 It should be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, and do not 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 a limitation on the present application.

[0040] 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 "a plurality of" is two and more than two, unless otherwise explicitly and specifically limited.

[0041] An embodiment of the present application provides a process cartridge, please refer to Figure 1 、 Figure 2 and Figure 10 , the process cartridge is used in cooperation with a moving part 50 of an image forming device, and the process cartridge comprises a developing unit 10, a photosensitive unit 20 and a separation mechanism 30.

[0042] Please refer to Figure 8 , the developing unit 10 comprises a developing main body 11, a power receiving part 12 and a developing roller 13, the developing roller 13 and the power receiving part 12 are movably arranged on the developing main body 11.

[0043] Please refer to Figure 2 , the photosensitive unit 20 comprises a photosensitive main body 21 and a photosensitive drum 22, the photosensitive drum 22 is movably arranged on the photosensitive main body 21, and the photosensitive main body 21 is movably connected with the developing main body 11.

[0044] Please refer to Figure 5 and Figure 13 , the separation mechanism 30 is movably arranged on the developing main body 11, the separation mechanism 30 has a separation surface 30a, and the power receiving part 12 is drivingly connected with the separation mechanism 30.

[0045] Please refer to Figures 10 to 13, the separating mechanism 30 has an initial state and a standby state, when the separating mechanism 30 is in the initial state, the separating surface 30a is in the first position of the moving member 50, the developing roller 13 and the photosensitive drum 22 are in contact; when the power receiving part 12 works, the separating mechanism 30 is driven by the driving action of the power receiving part 12 to move relative to the developing unit 10, so that the separating surface 30a moves from the first position to the second position, and the second position is within the moving range of the moving member 50, and the separating mechanism 30 switches to the standby state; in the standby state, when the moving member 50 moves to push the separating surface 30a, the separating mechanism 30 drives the developing unit 10 to move relative to the photosensitive unit 20 under the pushing action of the moving member 50, so that the developing roller 13 and the photosensitive drum 22 are separated.

[0046] Specifically, the image forming device can be any type of image forming apparatus such as a printer, a copier, a fax machine, etc. The image forming device includes a moving member 50 which can be used to cooperate with the process cartridge. When the power receiving part 12 works, the relative position between the developing roller 13 and the photosensitive drum 22 in the process cartridge can be switched by moving the moving member 50.

[0047] The developing roller 13 is movably arranged on the developing main body 11, and in fact, the developing roller 13 can rotate around the roller shaft to perform the developing work.

[0048] The power receiving part 12 can receive external driving force to drive the separating mechanism 30 to move relative to the developing unit 10. It should be noted that in some embodiments, the power receiving part 12 can directly receive driving force from the image forming device. In other embodiments, the power receiving part 12 can also receive driving force transmitted by the photosensitive unit 20, and the driving force of the photosensitive unit 20 is from the image forming device.

[0049] In addition, in addition to driving the separating mechanism 30 to move, the power receiving part 12 can also be drivingly connected to other structures of the developing unit 10 according to actual conditions. For example, the power receiving part 12 is drivingly connected to the developing roller 13 to drive the developing roller 13 to rotate.

[0050] The developing main body 11 is movable relative to the photosensitive main body 21, and the movement of the developing main body 11 can drive the developing roller 13 to move relative to the photosensitive unit 20, so that the developing roller 13 and the photosensitive drum 22 can be switched between contact and separation.

[0051] It should be noted that the movement mode of the developing main body 11 is not limited, which can be rotation, translation or other movable mode.

[0052] For example, the developing body 11 has a rotation axis, and the developing body 11 is capable of driving the developing roller 13 to rotate around the rotation axis. The relative position between the developing unit 10 and the photosensitive unit 20 is not fixed, so that the developing roller 13 and the photosensitive drum 22 can be switched between being in contact and being separated.

[0053] For another example, the developing body 11 adjusts the relative position with the photosensitive unit 20 through translation, so that the developing roller 13 and the photosensitive drum 22 are switched between being in contact and being separated.

[0054] The photosensitive drum 22 is movably arranged on the photosensitive body 21, and in fact, the photosensitive drum 22 can rotate around an axis to perform the developing work.

[0055] The photosensitive body 21 and the developing body 11 are movably connected, rather than fixedly connected. Thus, when the developing unit 10 moves as a whole, the photosensitive unit 20 will not be affected, and the developing roller 13 and the photosensitive drum 22 can be in contact and separated.

[0056] The separation mechanism 30 is operatively arranged on the developing body 11, which means that the separation mechanism 30 is arranged on the developing body 11, and the separation mechanism 30 can be driven to move the developing unit 10 by operating cooperation with the moving piece 50 and the power receiving part 12, and the specific structure form is not limited.

[0057] The separation surface 30a of the separation mechanism 30 is used to push the separation surface 30a of the moving piece 50 when the moving piece 50 moves, so as to drive the separation mechanism 30 and the developing unit 10 to move, so that the developing roller 13 and the photosensitive drum 22 are separated, when the separation mechanism 30 is in the standby state.

[0058] The power receiving part 12 is drivingly connected with the separation mechanism 30, and the two can be directly drivingly connected or indirectly drivingly connected through other transmission structures (such as transmission gears, etc.).

[0059] The initial state of the separation mechanism 30 refers to the state of the separation mechanism 30 when the power receiving part 12 is not working. In the initial state, the separation surface 30a of the separation mechanism 30 is in the first position. The first position is a position avoiding the movement of the moving piece 50, that is, an initial position outside the moving range of the moving piece 50 (such as shown in Figure 10 and Figure 11 In this state, no matter how the moving piece 50 moves in the moving range, the separation mechanism 30 will not be driven to move, and the developing roller 13 and the photosensitive drum 22 will not be separated.

[0060] It should be noted that when the separation mechanism 30 is in the initial state, the separation mechanism 30 as a whole avoids the movement of the moving piece 50, so that the wear of the moving piece 50 can be reduced as much as possible during the movement of the moving piece 50 to the working position.

[0061] The standby state of the separation mechanism 30 refers to the state of the separation mechanism 30 when the power receiving part 12 is working (as shown in Figure 12 and Figure 13 indicated). In the standby state, the power receiving part 12 applies a driving force to the separation mechanism 30 to move the separation surface 30a of the separation mechanism 30 from the first position to the second position. The second position is within the movement range of the moving piece 50, so that the moving piece 50 can move to push the separation surface 30a of the separation mechanism 30.

[0062] It should be noted that in the standby state, when the separation surface 30a is at the second position, in some embodiments, the separation surface 30a can not be in contact with the moving piece 50, and there is a certain interval distance between them, but the separation surface 30a is still within the movement range of the moving piece 50, and the moving piece 50 can move to push the separation surface 30a to move.

[0063] Of course, in other embodiments, in the standby state, the separation surface 30a can also be in contact with the moving piece 50.

[0064] It should be noted that when the separation mechanism 30 is in the standby state and the separation surface 30a is at the second position, if the moving piece 50 does not move to push the separation surface 30a, the developing roller 13 and the photosensitive drum 22 are still in contact, and at this time the process cartridge can normally perform the developing work. If the moving piece 50 is moved to push the separation surface 30a when the separation mechanism 30 is in the standby state, the separation mechanism 30 can drive the developing main body 11 to move relative to the photosensitive unit 20, so that the developing roller 13 and the photosensitive drum 22 are separated.

[0065] In addition, if the power receiving part 12 stops working, the separation mechanism 30 will be out of the standby state, and even if the moving piece 50 moves to push the separation surface 30a, it will not drive the developing unit to move, so that the developing roller 13 and the photosensitive drum 22 are not separated.

[0066] It can be understood that in the standby state, when the moving piece 50 pushes the separation mechanism 30 to move, the specific position of the separation mechanism 30 relative to the photosensitive drum 22 will change, but the position of the separation mechanism 30 relative to the developing main body 11 will not change.

[0067] The specific arrangement between the power receiving portion 12, the separation mechanism 30, and the developing main body 11 is not limited as long as the separation surface 30a of the separation mechanism 30 is in the first position to avoid the moving member 50 when the power receiving portion 12 is not activated, and the separation surface 30a of the separation mechanism 30 is moved to the second position relative to the developing main body 11 to be in the moving range of the moving member 50 after the power receiving portion 12 is activated, so that the moving member 50 can move to separate the developing roller 13 and the photosensitive drum 22.

[0068] It should be noted that the separation surface 30a of the separation mechanism 30 is in the second position because the power receiving portion 12 can continuously apply driving force to the separation mechanism 30 after being activated, so that the separation surface 30a is maintained in the second position, thereby facilitating the pushing of the moving member 50. When the power receiving portion 12 stops driving, the separation surface 30a of the separation mechanism 30 moves from the second position back to the first position, and the separation mechanism 30 switches to the initial state, and the developing roller 13 and the photosensitive drum 22 re-contact.

[0069] It can be understood that the separation surface 30a is in the second position due to the driving of the power receiving portion 12. When the separation mechanism 30 is in the standby state, if the moving member 50 does not move to push the separation surface 30a, at this time, the moving member 50 will not drive the developing unit 10 to move relative to the photosensitive unit 20, and thus the developing roller 13 and the photosensitive drum 22 will not be separated (as shown in Figure 12 ). Of course, according to actual needs, if the moving member 50 moves to push the separation surface 30a, the separation mechanism 30 drives the developing unit 10 to move relative to the photosensitive unit 20, which will separate the developing roller 13 and the photosensitive drum 22 (as shown in Figure 13 ).

[0070] In the process cartridge of the present application, when the power receiving portion 12 is not working, the separation surface 30a avoids the movement of the moving member 50, i.e., the separation surface 30a is located outside the moving range of the moving member 50, and not between the moving member 50 and the photosensitive drum 22. Thus, when the image forming apparatus starts to activate, during the movement of the moving member 50 to the working position, since the power receiving portion 12 is not working, the separation mechanism 30 will not interfere with the movement of the moving member 50, and thus will not press the moving member 50, thereby reducing the wear of the moving member 50 and preventing the damage of the moving member 50 as much as possible. Moreover, when it is required to separate the developing roller 13 and the photosensitive drum 22, the power receiving portion 12 can be activated to move the separation surface 30a of the separation mechanism 30 from the first position to the second position. Thus, the moving member 50 can move to push the separation mechanism 30, and then drive the developing unit 10 to move relative to the photosensitive unit 20, thereby meeting the requirement of separating the developing roller 13 and the photosensitive drum 22.

[0071] In one embodiment, referring to Figures 10 to 13 When the process cartridge is mounted to the image forming device, and the separation mechanism 30 is in either of the initial state and the standby state, the separation surface 30a and the photosensitive drum 22 are located at opposite sides of the moving member 50 in the front-rear direction of the process cartridge. Thus, the wear of the separation mechanism 30 to the moving member 50 can be further reduced, and the service life of the moving member 50 can be improved.

[0072] That is, whether the separation mechanism 30 is in the initial state or in the standby state, the moving member 50 is located between the separation surface 30a and the photosensitive drum 22 in the front-rear direction of the process cartridge. The difference is that, in the initial state, the separation mechanism 30 is not located in the moving range of the moving member 50, while in the standby state, the separation surface 30a of the separation mechanism 30 is located in the moving range of the moving member 50 and abuts against the moving member 50.

[0073] In one embodiment, referring to Figure 10 and Figure 11 in the front-rear direction of the process cartridge, when the separation surface 30a is in the first position, the interval between the separation surface 30a and the photosensitive drum 22 is the first interval; referring to Figure 12 and Figure 13 when the separation surface 30a is in the second position, the interval between the separation surface 30a and the photosensitive drum 22 is the second interval, and the first interval is greater than the second interval. That is, in the front-rear direction, the first position of the separation surface 30a is more rearward (i.e., farther away from the photosensitive drum 22) than the second position. Thus, it can be ensured that the separation surface 30a does not interfere with the movement of the moving member 50 in the first position.

[0074] In one embodiment, referring to Figures 4 to 6 The separation mechanism 30 includes a separation gear 31 and a movable assembly 32. The separation gear 31 is slidably arranged on the developing main body 11 and rotatable relative to the developing main body 11. The separation gear 31 is in meshing transmission with the power receiving portion 12. The movable assembly 32 has the separation surface 30a. The movable assembly 32 is movably arranged on the developing main body 11 and abuts against the separation gear 31.

[0075] Referring to Figures 10 to 13 When the power receiving portion 12 is in operation, the separation gear 31 rotates and slides relative to the developing main body 11 under the driving action of the power receiving portion 12. The separation gear 31 pushes the movable assembly 32 to switch the separation surface 30a from the first position to the second position. On the one hand, the separation gear 31 in meshing transmission with the power receiving portion 12 can achieve better transmission effect. On the other hand, the movable assembly 32 is moved to move the separation surface 30a to the second position by the sliding of the separation gear 31 relative to the developing main body 11.

[0076] In fact, the outer periphery of the power receiving portion 12 is also formed with a gear structure, which can be used for meshing transmission with the separation gear 31. It should be noted that the number of gears of the separation gear 31 can be set according to actual conditions, and the separation gear 31 can include only one gear or multiple gears for transmission.

[0077] When the power receiving portion 12 rotates under the action of external driving force (for example, rotates under the driving of the imaging device or the photosensitive unit 20), the separation gear 31 can rotate while sliding relative to the developing main body 11, and by itself sliding to push the movable assembly 32, the separation surface 30a of the movable assembly 32 is moved to the second position.

[0078] For example, please refer to Figure 10 , the power receiving portion 12 rotates in the clockwise direction in the figure, and since the separation gear 31 is meshed with the power receiving portion 12, the separation gear 31 can rotate in the counterclockwise direction in the figure and can slide in the clockwise direction in the figure.

[0079] The movement mode of the movable assembly 32 is not limited and is set according to specific conditions. For example, rotation, sliding, or a combination of multiple movement modes.

[0080] The specific structure of the separation gear 31 is also not limited and is set according to specific conditions.

[0081] For example, please refer to Figure 4 , the separation gear 31 includes a gear main body 311, and the gear main body 311 is meshed with the power receiving portion 12 for transmission.

[0082] Please refer to Figure 3 , a part of the developing main body 11 is recessed to form a first guide groove 11a, and the first guide groove 11a extends towards the side close to the movable assembly 32 along the rotation direction of the power receiving portion 12, and the separation gear 31 further includes a first guide column 312, which is arranged on the side of the gear main body 311 close to the developing main body 11 and is slidably arranged in the first guide groove 11a. Thus, a better guiding effect can be achieved, and the separation gear 31 can be easily slid in the set direction to drive the movable assembly 32 to move.

[0083] Specifically, the gear main body 311 is a gear structure with teeth, which is meshed with the power receiving portion 12.

[0084] The first guide column 312 is arranged on the gear body 311 and extends into the first guide groove 11a of the developing body 11. It can be understood that the size of the first guide groove 11a along the extending direction is greater than the size of the first guide column 312, so that the first guide column 312 can slide along the extending direction of the first guide groove 11a under the driving action of the power receiving portion 12. Thus, the gear body 311 can be driven to slide relative to the developing body 11. Moreover, while the gear body 311 and the first guide column 312 slide, the gear body 311 can rotate due to the engagement between the gear body 311 and the power receiving portion 12.

[0085] It should be noted that the first guide groove 11a extends around the rotation direction of the power receiving portion 12, so that the first guide column 312 can slide conveniently.

[0086] For example, referring to Figure 4 、 Figure 7 and Figure 9 , the developing unit 10 further comprises a cover 14 arranged on the developing body 11, the separating mechanism 30 is arranged between the cover 14 and the developing body 11, a part of the cover 14 is recessed to form a second guide groove 14a, the separating gear 31 further comprises a second guide column 313 arranged on the gear body 311 away from the developing body 11 and slidably arranged in the second guide groove 14a, and the movable assembly 32 abuts against at least one of the first guide column 312 and the second guide column 313. Thus, on the one hand, the separating gear 31 can slide along the set direction conveniently under the better guiding action, so as to drive the movable assembly 32 to move. On the other hand, the separating gear 31 can abut against the movable assembly 32, so as to drive the movable assembly 32 to move relative to the developing body 11.

[0087] Specifically, the second guide column 313 is arranged on the gear body 311 and extends into the second guide groove 14a of the cover 14. It can be understood that the size of the second guide groove 14a along the extending direction is greater than the size of the second guide column 313, so that the second guide column 313 can slide along the extending direction of the second guide groove 14a under the driving action of the power receiving portion 12. Thus, the gear body 311 can be driven to slide relative to the developing body 11 and the cover 14. Moreover, while the gear body 311 and the second guide column 313 slide, the gear body 311 can rotate due to the engagement between the gear body 311 and the power receiving portion 12.

[0088] In fact, the second guide groove 14a also extends around the rotation direction of the power receiving portion 12, so that the second guide column 313 can slide conveniently.

[0089] According to actual conditions, the movable assembly 32 can be in abutment with only the first guide column 312, in abutment with only the second guide column 313, or in abutment with both the first guide column 312 and the second guide column 313. In this way, interference between the movable assembly 32 and the gear body 311 can be avoided.

[0090] In one embodiment, as shown in Figure 5 、 Figure 6 and Figure 10 , the movable assembly 32 includes a movable rod 321 and a separation block 322, the separation block 322 has a separation surface 30a, the movable rod 321 is rotatably arranged on the developing body 11, one end of the movable rod 321 is in abutment with the separation gear 31, and the separation block 322 is movably arranged at the other end of the movable rod 321; along the front-rear direction of the process cartridge, the separation block 322 is in sliding connection with the developing body 11.

[0091] When the power receiving portion 12 is in operation, the separation gear 31 pushes the movable rod 321, so that the separation surface 30a is switched from the first position to the second position along the front-rear direction. In this way, the separation surface 30a can slide along the front-rear direction, so as to adjust the relative position along the front-rear direction.

[0092] Specifically, the movable rod 321 can rotate relative to the developing body 11 about a rotation axis, along the extension direction of the movable rod 321, one end of the movable rod 321 is used for abutment with the separation gear 31, and the other end of the movable rod 321 is used for mounting the separation block 322.

[0093] It should be noted that when the separation gear 31 pushes the movable rod 321, since the separation block 322 is not fixedly connected with the movable rod 321 but movably connected, and the separation block 322 is also movably arranged on the developing body 11. Thus, the separation block 322 does not rotate with the rotation of the movable rod 321, but slides relative to the developing body 11 under the driving of the movable rod 321. In this way, movement from the first position to the second position along the front-rear direction can be realized.

[0094] It should be noted that the sliding connection manner between the separation block 322 and the developing body 11 is not limited.

[0095] Exemplarily, as shown in Figure 3 、 Figure 5 and Figure 10, a part of the area of the developing main body 11 is recessed to form a third guide slot 11b, a part of the area of the separation block 322 close to the side of the developing main body 11 is protruded to form a third guide column 3221, the third guide column 3221 is slidably arranged in the third guide slot 11b, and the third guide slot 11b extends along the front-rear direction to guide the separation block 322 to slide along the front-rear direction. In this way, a better guiding effect can be achieved to guide the separation surface 30a of the separation block 322 to switch between the first position and the second position.

[0096] Specifically, the third guide column 3221 is located at the side of the separation block 322 close to the developing main body 11 and extends into the third guide slot 11b of the developing main body 11. It can be understood that the size of the third guide slot 11b along the extension direction is greater than the size of the third guide column 3221, so that the third guide column 3221 can slide along the extension direction of the third guide slot 11b under the driving of the movable rod 321. In this way, the separation surface 30a of the separation block 322 can be moved from the first position to the second position.

[0097] Of course, in other embodiments, other connection modes can also be adopted between the separation block 322 and the developing main body 11. For example, a slide groove is formed at the side of the separation block 322 close to the developing main body 11, a guide rail is protruded from a part of the area of the developing main body 11, and the separation block 322 and the developing main body 11 are slidably connected through the slide groove and the guide rail.

[0098] It should be noted that the specific number of the third guide column 3221 can be determined according to actual conditions, which can be one or more.

[0099] The number of the third guide slot 11b can also be determined according to actual conditions, which can be one or more.

[0100] When a plurality of third guide columns 3221 are provided, one third guide column 3221 can be provided in one third guide slot 11b, or two or more third guide columns 3221 can be provided in one third guide slot 11b.

[0101] In an embodiment, please refer to Figure 5 , Figure 6 and Figure 10 , a part of the area of the end of the movable rod 321 away from the separation gear 31 is recessed to form a fourth guide slot 321a, a part of the area of the side of the separation block 322 away from the developing main body 11 is protruded to form a fourth guide column 3222, the fourth guide column 3222 is slidably arranged in the fourth guide slot 321a, and the extension direction of the fourth guide slot 321a is different from the front-rear direction. In this way, rotation can be converted into sliding of the separation block 322, so that the switching of the separation surface 30a between the first position and the second position can be better achieved.

[0102] Specifically, the fourth guide column 3222 is located at one side of the separation block 322 close to the movable rod 321, and extends into the fourth guide slot 321a of the movable rod 321. It can be understood that the size of the fourth guide slot 321a along the extension direction is greater than the size of the fourth guide column 3222, so that the fourth guide column 3222 can slide relative to the movable rod 321.

[0103] It should be noted that since the separation block 322 is slidably connected with the developing main body 11 along the front-rear direction on the one hand, and the sliding direction of the separation block 322 on the movable rod 321 is different from the front-rear direction on the other hand, thus the pushing force applied to the separation block 322 during the rotation of the movable rod 321 can be converted into two-directional movement, that is, on the one hand, it slides relative to the developing main body 11 along the front-rear direction, and on the other hand, it slides relative to the movable rod 321 along the extension direction of the fourth guide slot 321a. Thus, the switching of the separation surface 30a between the first position and the second position can be better achieved.

[0104] In an embodiment, referring to Figure 2 , the separation mechanism 30 further comprises a reset spring 33, the reset spring 33 is connected with the movable assembly 32 and the developing unit 10 respectively; when the power receiving part 12 withdraws the driving force on the separation gear 31, the separation mechanism 30 is switched to the initial state under the action of the elastic force of the reset spring 33. Thus, the reset of the separation mechanism 30 can be better achieved.

[0105] Specifically, when the separation mechanism 30 is switched from the initial state to the standby state under the driving action of the power receiving part 12, the reset spring 33 can be elastically deformed to generate elastic potential energy. After the power receiving part 12 withdraws the driving force on the separation gear 31, the reset spring 33 elastically recovers under the action of the elastic potential energy to push the separation mechanism 30 to move, so that the separation mechanism 30 resets, the separation surface 30a resets to the first position, and thus the separation mechanism 30 switches from the standby state back to the initial state.

[0106] In other embodiments, the processing cartridge can also not be provided with the reset spring 33. The reset of the separation mechanism 30 can be achieved by moving the moving part 50 of the image forming device to reset the separation mechanism 30. It can be understood that when the power receiving part 12 withdraws the driving force on the separation gear 31, the separation mechanism 30 is not in the standby state, and thus moving the moving part 50 to drive the separation mechanism 30 to reset will not separate the developing roller 13 and the photosensitive drum 22.

[0107] In an embodiment, referring to Figures 9 to 13The processing cartridge further comprises an elastic member 40 arranged between the photosensitive body 21 and the developing body 11; when the power receiving portion 12 withdraws the driving force from the separating gear 31, the separating mechanism 30 switches to the initial state, and the developing body 11 is reset under the elastic force of the elastic member 40, so that the developing roller 13 and the photosensitive drum 22 are in contact. Thus, the reset of the developing body 11 can be better achieved.

[0108] Specifically, the elastic member 40 is connected with the photosensitive body 21 and the developing body 11 respectively; when the power receiving portion 12 works, the moving member 50 pushes the separating mechanism 30, so that the developing body 11 moves relative to the photosensitive body 21, thereby separating the developing roller 13 and the photosensitive drum 22; in this process, the elastic member 40 is elastically deformed to generate elastic potential energy. When the power receiving portion 12 withdraws the driving force from the separating gear 31, the separating surface 30a is reset to the first position, and the developing body 11 can be reset under the elastic force of the elastic member 40, so that the developing roller 13 and the photosensitive drum 22 can be in contact again.

[0109] In an embodiment, the photosensitive body 21 comprises a photosensitive shell and two end covers, and the photosensitive shell is provided with one end cover at each of opposite ends in the extending direction, wherein the end cover and the photosensitive shell can be integrally formed or separately formed.

[0110] In an embodiment, please refer to Figure 10 When the power receiving portion 12 does not work, the separating mechanism 30 is in the initial state, and the separating surface 30a is in the first position, so that the developing roller 13 and the photosensitive drum 22 are in contact. After the processing cartridge is installed, the photosensitive drum 22, the moving member 50 and the separating surface 30a are arranged in sequence in the front-rear direction.

[0111] Please refer to Figure 11 When the imaging device is started, the moving member 50 of the imaging device moves forward to the working position, and since the power receiving portion 12 does not work, the separating surface 30a is still in the first position, so that the moving member 50 does not touch the separating surface 30a whether it moves forward or backward, and the developing roller 13 is still in contact with the photosensitive drum 22.

[0112] Please refer to Figure 12 When the imaging device is ready to perform the developing work, the power receiving portion 12 starts to work to drive the separating gear 31 to rotate and push the movable rod 321 to rotate, so that the separating surface 30a moves to the second position, and the separating mechanism 30 is in the standby state. At this time, the moving member 50 can be selected not to move, i.e., the moving member 50 is still in the working position, and the moving member 50 does not move to push the separating surface 30a to move, so that the developing roller 13 is still in contact with the photosensitive drum 22, and the developing work can be normally performed.

[0113] Please refer to Figure 13When the imaging device needs to perform a cleaning procedure, the developing roller 13 needs to be separated from the photosensitive drum 22. Thus, by moving the moving member 50 backward and keeping the power receiving portion 12 in the working state, the separation surface 30a will not move relative to the developing unit 10 but will be integrated with the developing unit 10. Thus, the moving member 50 can move the developing unit 10 by abutting and pushing the separation surface 30a, so as to separate the developing roller 13 from the photosensitive drum 22, thereby facilitating the cleaning procedure.

[0114] When the cleaning procedure is completed, the program device stops working, the power receiving portion 12 also stops working, and the active rod 321 is no longer subjected to the continuous pushing force of the separation gear 31, so that the separation surface 30a can be brought back to the first position under the action of the reset spring 33 or the moving member 50, and the developing roller 13 and the photosensitive drum 22 are in contact again.

[0115] 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 connection with the embodiment or example are included in at least one embodiment or example 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 suitable manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the present application and the features of different embodiments or examples can be combined by those skilled in the art without contradiction.

[0116] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various modifications and changes to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application is 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 comprises: a developing unit, which comprises a developing main body, a power receiving part and a developing roller, the developing roller and the power receiving part being movably arranged on the developing main body; a photosensitive unit, which comprises a photosensitive main body and a photosensitive drum, the photosensitive drum being movably arranged on the photosensitive main body, and the photosensitive main body being movably connected with the developing main body; a separation mechanism, which is operatively arranged on the developing main body, has a separation surface, and is drivingly connected with the power receiving part; the separation mechanism has an initial state and a standby state, when the separation mechanism is in the initial state, the separation surface is in a first position which avoids the moving part, and the developing roller and the photosensitive drum are in contact; when the power receiving part works, the separation mechanism is driven by the power receiving part to move relative to the developing unit, so that the separation surface moves from the first position to a second position which is in a moving range of the moving part, and the separation mechanism switches to the standby state; in the standby state, when the moving part moves to push the separation surface, the separation mechanism drives the developing unit to move relative to the photosensitive unit under the pushing action of the moving part, so that the developing roller and the photosensitive drum are separated.

2. The process cartridge according to claim 1, wherein, When the processing cartridge is installed on the image forming device, and the separation mechanism is in any one of the initial state and the standby state, along a front-rear direction of the processing cartridge, the separation surface and the photosensitive drum are respectively located on opposite sides of the moving part.

3. The process cartridge according to claim 1 or 2, wherein, Along the front-rear direction of the processing cartridge, when the separation surface is in the first position, a distance between the separation surface and the photosensitive drum is a first distance; when the separation surface is in the second position, a distance between the separation surface and the photosensitive drum is a second distance, and the first distance is greater than the second distance.

4. The process cartridge according to claim 1 or 2, wherein The separation mechanism comprises a separation gear and a movable assembly, the separation gear is slidably arranged on the developing main body and rotatable relative to the developing main body, the separation gear is in meshing transmission with the power receiving part, and the movable assembly has the separation surface, the movable assembly is movably arranged on the developing main body and abuts against the separation gear; when the power receiving part works, the separation gear rotates and slides relative to the developing main body under the driving action of the power receiving part, and the separation gear pushes the movable assembly, so that the separation surface switches from the first position to the second position.

5. The process cartridge of claim 4 wherein, The separation gear comprises a gear main body, the gear main body is in meshing transmission with the power receiving part; a part of the developing main body is recessed to form a first guide groove, the first guide groove extends towards a side close to the movable assembly along a rotating direction of the power receiving part, the separation gear further comprises a first guide column, the first guide column is arranged on a side of the gear main body close to the developing main body and is slidably arranged in the first guide groove.

6. The process cartridge of claim 5 wherein, The developing unit further comprises a protective cover arranged on the developing body, the separating mechanism is arranged between the protective cover and the developing body, a partial area of the protective cover is recessed to form a second guide slot, the separating gear further comprises a second guide column arranged on a side of the gear body away from the developing body and slidably arranged in the second guide slot, and the movable assembly abuts against at least one of the first guide column and the second guide column.

7. The process cartridge of claim 4 wherein, The movable assembly comprises a movable rod and a separating block having the separating surface, the movable rod is rotatably arranged on the developing body, one end of the movable rod abuts against the separating gear, and the separating block is movably arranged at the other end of the movable rod; the separating block is in sliding connection with the developing body in the front-rear direction of the process cartridge; When the power receiving portion works, the separating gear pushes the movable rod to switch the separating surface from the first position to the second position in the front-rear direction.

8. The process cartridge of claim 7 wherein, A partial area of the developing body is recessed to form a third guide slot, a partial area of a side of the separating block close to the developing body is protruded to form a third guide column, the third guide column is slidably arranged in the third guide slot, and the third guide slot extends in the front-rear direction to guide the separating block to slide in the front-rear direction; and / or, A partial area of one end of the movable rod away from the separating gear is recessed to form a fourth guide slot, a partial area of a side of the separating block away from the developing body is protruded to form a fourth guide column, the fourth guide column is slidably arranged in the fourth guide slot, and the fourth guide slot extends in a direction different from the front-rear direction.

9. The process cartridge of claim 4 wherein, The separating mechanism further comprises a reset spring connected with the movable assembly and the developing unit respectively; when the power receiving portion withdraws the driving force from the separating gear, the separating mechanism is switched to the initial state under the elastic force of the reset spring.

10. The process cartridge of claim 4 wherein, The process cartridge further comprises an elastic member arranged between the photosensitive body and the developing body; when the power receiving portion withdraws the driving force from the separating gear, the separating mechanism is switched to the initial state, and the developing body is reset under the elastic force of the elastic member to make the developing roller and the photosensitive drum contact each other.

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