Processing box

Abstract

The embodiment of the utility model provides a processing box. A developing roller and a movable part of the developing unit are movably arranged on a developing main body. A photosensitive body of the photosensitive unit is movably connected with the developing body. The positioning device is movably arranged on the developing unit. When the processing box is in a first state, the positioning device abuts against the movable part, the movable part is separated from the moving part, and the movable part is located at a first position where the developing roller makes contact with the photosensitive drum. And when the processing box is in a second state, the positioning device is separated from the movable part, and the movable part is propped against the movable piece and is located at a second position at which the developing roller is separated from the photosensitive drum. The positioning device is matched with the movable part to be switched between abutting connection and separation with the movable part, and the movable part is matched with the movable part to be switched between abutting connection and separation with the movable part, so that the processing box is at least switched between a first state and a second state. The processing box provided by the embodiment of the utility model can maintain a relatively good developing effect.

Description

Technical Field

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

[0002] The printer's processing cartridge includes a developing roller and a photosensitive drum. In related technologies, the developing roller and the photosensitive drum are in contact through a bonding process to perform the developing operation. However, prolonged contact between the developing roller and the photosensitive drum can cause the elastic layer of the developing roller to deform due to long-term pressure, thereby affecting the developing effect. Utility Model Content

[0003] In view of this, the main objective of the embodiments of this application is to provide a processing cartridge that can maintain a good developing effect.

[0004] To achieve the above objectives, the technical solution of this application embodiment is implemented as follows:

[0005] This application embodiment provides a processing box, which is used to cooperate with a movable part of an imaging device, and the processing box includes:

[0006] A developing unit, comprising a developing body, a developing roller, and a movable part, wherein the developing roller and the movable part are movably disposed on the developing body;

[0007] A photosensitive unit, comprising a photosensitive body and a photosensitive drum movably disposed on the photosensitive body, the photosensitive body being movably connected to the developing body;

[0008] A positioning device, which is movably disposed on the developing unit;

[0009] The processing box has at least a first state and a second state; when the processing box is in the first state, the positioning device abuts against the movable part, and the movable part is separated from the moving part, and the movable part is in a first position that causes the developing roller and the photosensitive drum to contact each other;

[0010] When the processing box is in the second state, the positioning device is separated from the movable part, the movable part abuts against the moving part, and the movable part is in a second position that separates the developing roller and the photosensitive drum;

[0011] The positioning device, by cooperating with the moving member, switches between contacting and separating from the movable part, and the movable part, by cooperating with the moving member, switches between contacting and separating from the moving member, causing the processing box to switch between at least the first state and the second state.

[0012] In one embodiment, the processing box includes a first elastic element and a second elastic element. The first elastic element is disposed at one end of the developing body near the developing roller, and the first elastic element is connected to the developing body and the movable part respectively, so as to apply a first torque to the developing body. The first torque causes the developing body to have a rotational effect that drives the developing roller to rotate in a first direction.

[0013] The second elastic element is disposed at the end of the developing body away from the developing roller, and the second elastic element is connected to both the developing body and the photosensitive body to apply a second torque to the developing body. The second torque causes the developing body to have a rotational effect that drives the developing roller to rotate in a second direction. The first torque is opposite to the direction of the second torque, the first direction is opposite to the direction of the second direction, and the first direction is the direction in which the developing roller rotates toward the side away from the photosensitive drum.

[0014] In one embodiment, when the processing box is in the second state, the first torque is greater than the second torque.

[0015] In one embodiment, the movable part includes an abutting end; when the processing cartridge is in the first state, the distance between the abutting end and the developing roller is a first gap; when the processing cartridge is in the second state, the abutting end abuts against the movable member and can move with the movable member, the distance between the abutting end and the developing roller is a second gap, and the minimum value of the second gap is less than the first gap.

[0016] In one embodiment, the processing box further includes a third state, in which the positioning device is separated from the movable part, and the movable part is separated from the moving member, and the movable part is in a third position that brings the developing roller and the photosensitive drum into contact.

[0017] The positioning device and the movable part cooperate with the moving part respectively to switch the processing box between the first state, the second state and the third state.

[0018] In one embodiment, the positioning device includes a first abutting part, a second abutting part, a third abutting part, and a rotating connecting part. The first abutting part, the second abutting part, and the third abutting part are respectively disposed on the rotating connecting part, which is rotatably disposed on the developing body. When the processing cartridge is in the first state, the first abutting part abuts against the movable part; when the processing cartridge is in the second state, the first abutting part separates from the movable part.

[0019] The movable member moves to selectively abut and push against one of the second and third abutting portions, causing the first abutting portion to rotate circumferentially around the rotating connection portion, thereby switching between abutting and separating from the movable portion.

[0020] In one embodiment, when the processing box is in the first state, the second abutment and the movable part are both located on the side of the moving member away from the photosensitive drum, and the third abutment is located on the side of the moving member close to the photosensitive drum; the moving member moves towards the side away from the photosensitive drum to abut against the second abutment and pushes the second abutment to rotate in a third direction, so that the first abutment is switched to separate from the movable part, and the moving member abuts against the movable part, and the processing box switches to the second state; wherein, the third direction is the direction in which the second abutment rotates towards the side away from the third abutment.

[0021] In one embodiment, during the process of the processing box switching from the second state to the first state, the movable member moves toward the side closer to the photosensitive drum to abut against the third abutment portion and pushes the third abutment portion to rotate in the fourth direction, so that the first abutment portion switches to abut against the movable portion, and the movable member separates from the movable portion, and the processing box switches to the first state; wherein, the fourth direction is opposite to the third direction.

[0022] In one embodiment, the first abutting portion, the second abutting portion, and the third abutting portion are all fixedly connected to the rotating connecting portion; or,

[0023] The second abutting part and the third abutting part are respectively fixedly connected to the rotating connecting part. The first abutting part has a first connecting hole and a waist-shaped hole. A portion of the third abutting part protrudes to form a first connecting post. A portion of the developing body protrudes to form a guide post. The first abutting part is rotatably sleeved on the first connecting post through the first connecting hole. The guide post passes through the waist-shaped hole to guide the first abutting part to rotate.

[0024] In one embodiment, the movable part is a movable rod, and a portion of the developing body opposite to the developing roller protrudes to form a second connecting post. The movable rod opposite to the developing roller has a second connecting hole, and the movable rod is sleeved on the second connecting post through the second connecting hole so that the movable rod can rotate around the second connecting post.

[0025] This application provides a processing cartridge, which includes a developing unit, a photosensitive unit, and a positioning device. The positioning device is movably disposed on the developing unit. The processing cartridge has at least a first state and a second state. When the processing cartridge is in the first state, the positioning device abuts against a movable part, and the movable part is separated from a moving member. The movable part is in a first position where the developing roller and the photosensitive drum are in contact. When the processing cartridge is in the second state, the positioning device is separated from the movable part, and the movable part abuts against the moving member. The movable part is in a second position where the developing roller and the photosensitive drum are spaced apart. The positioning device, by cooperating with the moving member, switches between abutting and separating from the movable part, and the movable part, by cooperating with the moving member, switches between abutting and separating from the moving member, thereby allowing the processing cartridge to switch between at least the first state and the second state. That is, by moving the moving member, the cooperation mode between the positioning device and the moving member, as well as the cooperation mode between the movable part and the moving member, can be changed, enabling the processing cartridge to switch between the first state and the second state, and thus enabling the developing roller and the photosensitive drum to switch between mutual contact and mutual spacing. Therefore, when the processing cartridge needs to perform development, it can switch to the first state, bringing the developing roller and photosensitive drum into contact. When the processing cartridge does not need to perform development, such as during cleaning or when not in use, the imaging device (such as a printer)'s internal program will switch the processing cartridge to the second state, separating the developing roller and photosensitive drum. This demonstrates that the developing roller and photosensitive drum can be spaced apart as needed, reducing the risk of deformation of the developing roller's elastic layer due to prolonged pressure, thus maintaining good development results and minimizing any significant impact on the development outcome. Simultaneously, when the processing cartridge needs to perform development, the developing roller and photosensitive drum can be brought into contact again, thus not affecting the normal development process of the processing cartridge. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a processing box according to an embodiment of this application;

[0027] Figure 2 for Figure 1 Exploded view of the processing box;

[0028] Figure 3 for Figure 1 Side view of the processing box;

[0029] Figure 4 for Figure 3 A partial sectional view of the central processing box;

[0030] Figure 5 for Figure 4 A schematic diagram showing the relationship between the developing unit and the photosensitive drum; the processing cassette is in the first state, and the moving part is in... Figure 5 The middle position;

[0031] Figure 6 for Figure 4 A schematic diagram showing the relationship between the developing unit and the photosensitive drum; the processing cassette is in the first state, and the moving part is in... Figure 6 The contact position (i.e., the left side position);

[0032] Figure 7 for Figure 4 A schematic diagram showing the relationship between the developing unit and the photosensitive drum; the processing cassette is in the second state, and the moving part is in... Figure 7 The separation position (i.e., the right side position) in the middle;

[0033] Figure 8 for Figure 4 A schematic diagram showing the relationship between the developing unit and the photosensitive drum; the processing cassette is in the second state, and the moving part is in... Figure 8 The middle position;

[0034] Figure 9 for Figure 4 A schematic diagram showing the relationship between the developing unit and the photosensitive drum; the processing cartridge is in the third state in the diagram.

[0035] Figure 10 This is a schematic diagram of the processing box according to another embodiment of this application;

[0036] Figure 11 for Figure 10 Exploded view of the processing box;

[0037] Figure 12 for Figure 10 Side view of the processing box; the processing box is in the first state in the figure;

[0038] Figure 13 for Figure 10 Side view of the processing box; the processing box is in the second state, and the moving part is in... Figure 13 The middle position;

[0039] Figure 14 for Figure 12 A partial sectional view of the central area;

[0040] Figure 15 for Figure 13 A partial sectional view of the central area;

[0041] Figure 16 for Figure 2 A schematic diagram of the structure of the central activity section;

[0042] Figure 17 for Figure 2 A schematic diagram of the positioning device.

[0043] Figure 18 for Figure 11 A schematic diagram of the positioning device.

[0044] Explanation of reference numerals in the attached figures

[0045] 10. Developing unit; 11. Developing body; 111. Guide post; 112. Second connecting post; 12. Developing roller; 13. Movable part; 13a. Second connecting hole; 131. Abutting end; 20. Photosensitive unit; 21. Photosensitive body; 22. Photosensitive drum; 30. Positioning device; 31. First abutting part; 31a. First connecting hole; 31b. Waist-shaped hole; 32. Second abutting part; 33. Third abutting part; 331. First connecting post; 34. Rotating connecting part; 40. First elastic element; 50. Second elastic element; 60. Moving part; M1. First direction; M2. Second direction; M3. Third direction; M4. Fourth direction. Detailed Implementation

[0046] In this application, the orientation or positional relationship of "first direction M1", "second direction M2", "third direction M3" and "fourth direction M4" is based on the appendix. Figure 5 The orientation or positional relationship shown is for illustrative purposes only and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0047] In the description of the embodiments of this application, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0048] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0049] One embodiment of this application provides a processing box; please refer to [link / reference]. Figure 1 , Figure 2 , Figure 5 , Figure 10 and Figure 11 The processing box is used to cooperate with the moving part 60 of the imaging device. The processing box includes a developing unit 10, a photosensitive unit 20 and a positioning device 30.

[0050] The developing unit 10 includes a developing body 11, a developing roller 12, and a movable part 13, which are movably disposed on the developing body 11.

[0051] Please see Figure 3 and Figure 4 The photosensitive unit 20 includes a photosensitive body 21 and a photosensitive drum 22 movably disposed on the photosensitive body 21. The photosensitive body 21 is movably connected to the developing body 11.

[0052] The positioning device 30 is movably mounted on the developing unit 10.

[0053] Please see Figure 5 , Figure 6 , Figure 12 and Figure 14 The processing box has at least a first state and a second state. When the processing box is in the first state, the positioning device 30 abuts against the movable part 13 and the movable part 13 is separated from the moving part 60. The movable part 13 is in the first position that makes the developing roller 12 and the photosensitive drum 22 come into contact.

[0054] Please see Figure 7 , Figure 8 , Figure 13 and Figure 15 When the processing box is in the second state, the positioning device 30 is separated from the movable part 13, the movable part 13 abuts against the moving part 60, and the movable part 13 is in the second position that separates the developing roller 12 and the photosensitive drum 22.

[0055] The positioning device 30, by cooperating with the moving member 60, switches between contacting and separating from the movable part 13, and the movable part 13, by cooperating with the moving member 60, switches between contacting and separating from the moving member 60, thereby causing the processing box to switch between at least a first state and a second state.

[0056] Specifically, the imaging device can be any type of imaging device such as a printer, copier, or fax machine. The imaging device includes a movable component 60, which can cooperate with the processing cartridge. By moving the movable component 60, the relative positions between the developing roller 12 and the photosensitive drum 22 within the processing cartridge can be switched.

[0057] The developing roller 12 is rotatably mounted on the developing body 11, thereby enabling the developing roller 12 to rotate around the roller shaft and thus perform the developing operation.

[0058] In fact, the developing body 11 is movable relative to the photosensitive unit 20. Through the movement of the developing body 11, the developing roller 12 and the movable part 13 can be moved relative to the photosensitive unit 20, thereby allowing the developing roller 12 and the photosensitive drum 22 to switch between phase contact and phase separation.

[0059] It should be noted that the movement of the developing body 11 is not limited; it can be rotation, translation, or other movable movements.

[0060] For example, the developing body 11 has a rotating shaft, which can drive the developing roller 12 and the movable part 13 to rotate around the rotating shaft. The relative position between the developing unit 10 and the photosensitive unit 20 is not fixed, thereby allowing the developing roller 12 and the photosensitive drum 22 to switch between phase contact and phase separation.

[0061] For example, the developing body 11 adjusts its relative position to the photosensitive unit 20 by translational adjustment, so that the developing roller 12 and the photosensitive drum 22 switch between phase contact and phase separation.

[0062] The movable part 13 is movably provided on the developing body 11, which means that on the one hand, the movable part 13 is connected to the developing body 11, and on the other hand, the movable part 13 and the developing body 11 can be relatively displaced.

[0063] For example, one end of the movable part 13 is rotatably mounted on the developing body 11, and the other end of the movable part 13 is connected to the developing body 11 via a tension spring.

[0064] The photosensitive drum 22 is rotatably mounted on the photosensitive body 21, thereby enabling the photosensitive drum 22 to rotate around its axis for developing.

[0065] The photosensitive element 21 and the developing element 11 are movably connected, rather than fixedly connected. Therefore, when the developing unit 10 moves as a whole, it will not affect the photosensitive element 20, and the developing roller 12 and the photosensitive drum 22 can be in contact and spaced apart.

[0066] For example, at the end of the photosensitive body 21 and the developing body 11 that is away from the photosensitive drum 22 and the developing roller 12, the photosensitive body 21 and the developing body 11 are connected by a compression spring.

[0067] The positioning device 30 can move to abut against the movable part 13, thereby positioning the movable part 13. At the same time, the positioning device 30 can also move to avoid the movable part 13, thereby avoiding limiting the movable part 13.

[0068] The positioning device 30 can be movably set in a manner that can be set according to actual conditions. For example, the positioning device 30 can be rotatably set on the developing unit 10.

[0069] For example, the positioning device 30 is movably mounted on the developing unit 10 and can translate relative to the developing unit 10.

[0070] The processing box may include only the first and second states, or it may include other states.

[0071] In fact, the first state of the processing cartridge is the state in which the developing roller 12 and the photosensitive drum 22 are in contact, which is the working state that enables the processing cartridge to perform normal developing work.

[0072] The second state of the processing cartridge is when the developing roller 12 and the photosensitive drum 22 are spaced apart, which means that the processing cartridge is not performing developing work. In this state, cleaning and other procedures can be performed.

[0073] In the first state, the positioning device 30 abuts against the movable part 13 to position the movable part 13 in a first position. When the movable part 13 is in the first position, and due to the abutment action of the positioning device 30, the movable part 13 will not contact the moving member 60, that is, the two are separated. The moving member 60 does not restrict the overall movement of the developing body 11, and the developing body 11 will be in a position that brings the developing roller 12 into contact with the photosensitive drum 22.

[0074] In the second state, the positioning device 30 is separated from the movable part 13, and the positioning device 30 does not limit the movable part 13. The movable part 13 moves relative to the developing body 11 until it comes into contact with the moving member 60. Thus, the moving member 60 can limit the movable part 13 to the second position. At the same time, since the positioning device 30 does not come into contact with the movable part 13, and the movable part 13 is movably connected to the developing body 11, the developing body 11 can move relative to the photosensitive unit 20 (e.g., translate or rotate) to space the developing roller 12 and the photosensitive drum 22 apart.

[0075] That is, by moving the movable member 60, one of the positioning device 30 and the movable member 60 abuts against the movable part 13, while the other separates from the movable part 13, thereby enabling the movable part 13 to switch between a first position and a second position, and thus enabling the developing roller 12 and the photosensitive drum 22 to switch between contact and interval.

[0076] It should be noted that the specific cooperation between the positioning device 30, the movable part 13 and the moving part 60 is not limited, as long as the moving part 60 can move to switch the contact relationship between the positioning device 30, the movable part 13 and the moving part 60, so that the processing box switches at least between the first state and the second state, thereby allowing the developing roller 12 and the photosensitive drum 22 to switch between phase contact and phase separation.

[0077] In the processing cartridge of this embodiment, the movement of the movable member 60 can change the engagement method between the positioning device 30 and the movable member 60, as well as the engagement method between the movable part 13 and the movable member 60. This allows the processing cartridge to switch between a first state and a second state, thereby switching the developing roller 12 and the photosensitive drum 22 between mutual contact and mutual spacing. Therefore, when the processing cartridge needs to perform developing operations, it can switch to the first state, bringing the developing roller 12 and the photosensitive drum 22 into contact. When the processing cartridge does not need to perform developing operations, such as during cleaning or when not in use, the internal program of the imaging device (e.g., a printer) switches the processing cartridge to the second state, separating the developing roller 12 and the photosensitive drum 22. Thus, the developing roller 12 and the photosensitive drum 22 can be spaced apart as needed, reducing the risk of deformation of the elastic layer of the developing roller 12 due to long-term pressure, thereby maintaining a good developing effect and minimizing its impact. At the same time, when the processing cartridge needs to perform development work, the developing roller 12 and the photosensitive drum 22 can be brought into contact, so as not to affect the normal development work of the processing cartridge.

[0078] In related technologies, the developing unit of the processing cartridge is equipped with a rotatable holding mechanism. This holding mechanism abuts against the housing of the photosensitive unit, preventing the developing roller and the photosensitive drum from contacting each other, thus preventing pressure on the surface of the developing roller. When development is required, a moving component on the imaging device pushes the holding mechanism of the processing cartridge, causing it to rotate and bringing the developing unit closer to the photosensitive unit for development. After the developing roller and photosensitive drum come into contact, the moving component immediately moves to a neutral position; the contact between the developing roller and photosensitive drum does not rely on the abutment of the moving component. After development is complete, the moving component reverses and abuts against the holding mechanism, causing the holding mechanism to rotate in the opposite direction and abut against the processing cartridge housing. The holding mechanism keeps the developing unit away from the photosensitive drum unit, keeping the developing roller away from the photosensitive drum, thus preventing pressure on the elastic layer of the developing roller. After separating the developing roller from the photosensitive drum, the moving component immediately returns to the neutral position and no longer abuts against the processing cartridge. The processing cartridge relies on the holding mechanism to maintain the continuous separation of the developing roller and photosensitive drum. However, in related technologies, the processing cartridge is kept in contact with the housing for a long time during transportation and storage before being installed into the imaging equipment. This causes the developing roller and the photosensitive drum to be separated. After being separated for a long time, the processing cartridge is then installed into the printer, which can cause the developing unit to not make good contact with the photosensitive drum unit, thus affecting the developing effect.

[0079] Before the processing cartridge of this embodiment is installed into the imaging device, the moving part 60 does not participate in the contact, and the movable part 13 abuts against the positioning device 30, which puts the processing cartridge in the first state, that is, the developing roller 12 and the photosensitive drum 22 are in contact. In other words, before the processing cartridge of this application is installed into the imaging device (such as during transportation and storage), the developing roller 12 and the photosensitive drum 22 can be kept in contact, thereby reducing the risk that the developing unit 10 and the photosensitive drum 22 unit may not make good contact, and maintaining a better developing effect. After the processing cartridge is installed into the imaging device, the positioning device 30, the moving part 60 and the movable part 13 can cooperate with each other, and the internal program of the imaging device (such as a printer) can control the processing cartridge to switch between the first state and the second state, which can reduce the risk that the developing effect will be affected by the long-term pressure deformation of the elastic layer of the developing roller 12 during product use, and further maintain a better developing effect.

[0080] In one embodiment, please refer to Figure 5 and Figure 7 The processing box includes a first elastic element 40 and a second elastic element 50. The first elastic element 40 is disposed at one end of the developing body 11 near the developing roller 12, and the first elastic element 40 is connected to the developing body 11 and the movable part 13 respectively, so as to apply a first torque to the developing body 11. The first torque causes the developing body 11 to have a rotational effect that drives the developing roller 12 to rotate along the first direction M1.

[0081] The second elastic element 50 is disposed at the end of the developing body 11 away from the developing roller 12, and is connected to both the developing body 11 and the photosensitive body 21 to apply a second torque to the developing body 11. This second torque causes the developing body 11 to have a rotational effect that drives the developing roller 12 to rotate along a second direction M2. The first torque and the second torque are in opposite directions, the first direction M1 and the second direction M2 are in opposite directions, and the first direction M1 is the direction in which the developing roller 12 rotates towards the side away from the photosensitive drum 22. Thus, in the first state, the developing roller 12 and the photosensitive drum 22 are in contact, while in the second state, they are spaced apart.

[0082] Specifically, the developing body 11 and the movable part 13 are connected by a first elastic member 40, so that the developing body 11 and the movable part 13 can move relative to each other.

[0083] It should be noted that the specific configuration of the first elastic element 40 can be set according to the actual situation, but the first elastic element 40 must satisfy the following: the first torque applied by the first elastic element 40 to the developing body 11 is used to drive the developing body 11 to rotate the developing roller 12 in the direction away from the photosensitive drum 22 (i.e., Figure 5 (Counterclockwise direction in the middle).

[0084] For example, the first elastic element 40 is a tension spring that is connected to the developing body 11 and the movable part 13 respectively, and the force applied by the first elastic element 40 to the developing body 11 is a pulling force toward the side away from the photosensitive drum 22.

[0085] Thus, the processing cartridge is in the second state, and the first elastic element 40 pulls the developing body 11 to rotate along the first direction M1, thereby driving the developing roller 12 to rotate along the first direction M1 to separate from the photosensitive drum 22.

[0086] The specific configuration of the second elastic element 50 can also be set according to the actual situation, but the second elastic element 50 must satisfy the following: the second torque applied by the second elastic element 50 to the developing body 11 is used to drive the developing body 11 to rotate the developing roller 12 in the direction closer to the photosensitive drum 22 (i.e. Figure 5 (clockwise direction).

[0087] For example, the second elastic element 50 is a compression spring connected to the developing body 11 and the photosensitive body 21 respectively, and the force applied by the second elastic element 50 to the developing body 11 is a thrust toward the side away from the photosensitive body 21.

[0088] Thus, when the processing cartridge is in the first state, the second elastic element 50 pushes the overall developing unit 10 to rotate along the second direction M2 so as to contact the photosensitive drum 22.

[0089] In one embodiment, please refer to Figure 8 When the processing cartridge is in the second state, the first torque is greater than the second torque. As a result, the first elastic element 40 can hold the developing body 11, and the developing body 11 will not rotate along the second direction M2 under the action of the second torque and the torque generated by other forces (such as the torque of gravity). This ensures that the developing roller 12 and the photosensitive drum 22 are spaced apart in the second state of the processing cartridge.

[0090] In some embodiments, when the processing box is in the second state, the first torque is equal to the second torque.

[0091] In one embodiment, please refer to Figure 5 , Figure 8 and Figure 16 The movable part 13 includes an abutment end 131. When the processing cartridge is in a first state, the distance between the abutment end 131 and the developing roller 12 is a first gap. When the processing cartridge is in a second state, the abutment end 131 abuts against the movable member 60 and can move with the movable member 60. The distance between the abutment end 131 and the developing roller 12 is a second gap, and the minimum value of the second gap is less than the first gap. Thus, when the processing cartridge is in the first state, the movable part 13 will not abut against the movable member 60, but only against the positioning device 30, which can avoid interference from the movable member 60.

[0092] Specifically, after the moving part 60 engages with the positioning device 30 to separate the positioning device 30 from the movable part 13, the moving part 60 abuts against the movable part 13, the developing roller 12 and the photosensitive drum 22 separate, and the processing cartridge enters the second state. Since the moving part 60 is movable, the abutting end 131 of the movable part 13 abuts against the moving part 60 and can move with it. Therefore, during the movement of the moving part 60, the distance between the abutting end 131 of the movable part 13 and the developing roller 12 (i.e., the second gap) changes. In other words, the second gap is actually a range value after the processing cartridge enters the second state. When the moving part 60 moves closer to the positioning device 30 to engage with it, causing the processing cartridge to switch from the second state back to the first state, the distance between the abutting end 131 of the movable part 13 and the developing roller 12 is the minimum value of the second gap.

[0093] Furthermore, since the minimum value of the second gap is less than the first gap, when the processing box switches to the first state, compared to the aforementioned critical point, due to the abutting action of the positioning device 30, the movable part 13 will be pushed to move towards the first direction M1, thereby enabling the separation of the movable part 13 from the moving part 60.

[0094] In one embodiment, please refer to Figure 9 The processing box also includes a third state. When the processing box is in the third state, the positioning device 30 is separated from the movable part 13, and the movable part 13 is separated from the moving part 60. The movable part 13 is in a third position that brings the developing roller 12 and the photosensitive drum 22 into contact.

[0095] The positioning device 30 and the movable part 13, by cooperating with the moving part 60 respectively, enable the processing box to switch between the first state, the second state and the third state.

[0096] Specifically, the third state of the processing box is a state in which neither the positioning device 30 nor the moving part 60 abuts against the movable part 13. For example, the processing box is not installed in the imaging device, and the positioning device 30 is separated from the moving part 60. Therefore, during transportation and storage, there is no need to abut the positioning device 30 against the movable part 13, which reduces the risk of the movable part 13 failing due to contact.

[0097] In one embodiment, please refer to Figures 5 to 8 The positioning device 30 includes a first abutting part 31, a second abutting part 32, a third abutting part 33, and a rotating connecting part 34. The first abutting part 31, the second abutting part 32, and the third abutting part 33 are respectively disposed on the rotating connecting part 34, which is rotatably disposed on the developing body 11. When the processing box is in the first state, the first abutting part 31 abuts against the movable part 13. When the processing box is in the second state, the first abutting part 31 separates from the movable part 13.

[0098] The movable member 60, by moving, selectively abuts and pushes against one of the second abutting part 32 and the third abutting part 33, causing the first abutting part 31 to rotate circumferentially around the rotating connecting part 34, thereby switching between abutting and separating from the movable part 13. Thus, by moving the movable member 60, the rotation of the positioning device 30 can be effectively achieved, facilitating the switching of the positioning device 30 between abutting and separating from the movable part 13.

[0099] Specifically, the positioning device 30 is rotatably mounted on the developing body 11, and the rotating connection part 34 is the rotation center of the positioning device 30. By rotating the rotating connection part 34, the first abutting part 31, the second abutting part 32 and the third abutting part 33 can be driven to rotate.

[0100] The first abutting part 31 is used to abut and cooperate with the movable part 13, while the second abutting part 32 and the third abutting part 33 are used to abut with the moving part 60, so that the positioning device 30 rotates as a whole under the pushing of the moving part 60, thereby realizing the switching between the first abutting part 31 abutting and separating from the movable part 13.

[0101] It should be noted that the specific contact and engagement method between the moving part 60 and the positioning device 30 can be set according to the actual situation.

[0102] For example, please see Figure 5 and Figure 7 When the processing box is in the first state, the second abutment part 32 and the movable part 13 are both located on the side of the moving member 60 away from the photosensitive drum 22, and the third abutment part 33 is located on the side of the moving member 60 closer to the photosensitive drum 22. The moving member 60 moves towards the side away from the photosensitive drum 22 to abut against the second abutment part 32, and pushes the second abutment part 32 to rotate along the third direction M3, so that the first abutment part 31 switches to separate from the movable part 13, and the moving member 60 abuts against the movable part 13, and the processing box switches to the second state. Herein, the third direction M3 is the direction in which the second abutment part 32 rotates towards the side away from the third abutment part 33. Thus, the moving member 60 can easily cooperate with the positioning device 30, and the state switching of the processing box can be better realized.

[0103] Specifically, since the second abutment 32 and the movable part 13 are both located on the side of the moving member 60 away from the photosensitive drum 22 when the processing box is in the first state, the moving member 60 will abut against the second abutment 32 and the movable part 13 respectively when it moves towards the side away from the photosensitive drum 22.

[0104] Therefore, after the moving part 60 abuts against the second abutting part 32, it continues to move towards the side away from the photosensitive drum 22, which will push the positioning device 30 along the third direction M3 (i.e., Figure 5The first contact part 31 is separated from the movable part 13 by rotating counterclockwise.

[0105] Furthermore, as the moving part 60 moves toward the side away from the photosensitive drum 22, it will also come into contact with the movable part 13, causing the movable part 13 to drive the developing body 11 and the developing roller 12 to rotate toward the direction away from the photosensitive drum 22, so that the developing roller 12 and the photosensitive drum 22 are separated, thereby allowing the processing cartridge to switch to the second state.

[0106] In one embodiment, please refer to Figure 5 , Figure 7 and Figure 8 During the process of switching the processing box from the second state to the first state, the moving member 60 moves towards the side closer to the photosensitive drum 22 to abut against the third abutment part 33, and pushes the third abutment part 33 to rotate along the fourth direction M4, so that the first abutment part 31 switches to abut against the movable part 13, and the moving member 60 separates from the movable part 13, and the processing box switches to the first state; wherein, the fourth direction M4 is opposite to the third direction M3. Therefore, it is convenient for the moving member 60 to cooperate with the positioning device 30, and the state switching of the processing box can be realized better.

[0107] Specifically, since the third abutment 33 is located on the side of the moving member 60 closer to the photosensitive drum 22 when the processing box is in the second state, it will abut against the third abutment 33 when the moving member 60 moves toward the side closer to the photosensitive drum 22.

[0108] Therefore, after the moving part 60 abuts against the third abutment part 33, it continues to move towards the side closer to the photosensitive drum 22, which will push the positioning device 30 along the fourth direction M4 (i.e., Figure 5 The first contact part 31 is rotated clockwise, thereby causing the movable part 13 to re-engage.

[0109] Furthermore, since the first contact part 31 and the movable part 13 re-contact each other, the movable part 13 will separate from the moving part 60, and the moving part 60 will no longer restrict the movement of the developing unit 10. The developing roller 12 and the photosensitive drum 22 will re-contact each other, thereby causing the processing cartridge to switch to the first state.

[0110] In one specific embodiment, please refer to Figure 5 , Figure 6 and Figure 7 The moving part 60 has a contact position ( Figure 6 Left side position), middle position and separation position ( Figure 7 The three states (right side position). When the first contact part 31 contacts the movable part 13, the moving part 60 switches between the contact position and the middle position. During this process, the processing box is in the first state, and the developing roller 12 and the photosensitive drum 22 are in contact.

[0111] Please see Figure 5 and Figure 7 As the movable part 60 moves from the middle position to the separation position, the movable part 60 will successively abut against and push the second abutment part 32 and the movable part 13 to rotate. Figure 5 (in a counter-clockwise direction), causing the first contact part 31 and the movable part 13 to separate, the movable part 13 is unlocked, and the movable part 13 pulls the developing body 11 and the developing roller 12 to rotate along the first direction M1 via the first elastic element 40. Figure 5 (Counterclockwise direction); the movable part 13 abuts against the movable part 60 and moves with the movable part 60. During this process, the processing box switches from the first state to the second state, and the developing roller 12 and the photosensitive drum 22 separate.

[0112] Please see Figure 7 and Figure 8 As the moving part 60 moves from the separated position back to the middle position, the movable part 13 moves with the moving part 60, and the developing unit 10 as a whole rotates along the second direction M2 under the pushing force of the second elastic member 50. Figure 7 (in the clockwise direction), since the second abutment part 32 and the movable part 13 are still separated at this time, the first elastic element 40 will have a greater ability to pull the developing body 11 and the developing roller 12 along the first direction M1 (clockwise direction). Figure 7 The tendency of the developing roller 12 to rotate counterclockwise brings it closer to the moving part 13, thus maintaining the separation of the developing roller 12 and the photosensitive drum 22. During this process, the processing cartridge is in the second state.

[0113] As the movable part 60 switches back from the intermediate position to the contact position, the movable part 60 pushes the third abutment part 33 to rotate. Figure 8 (In the clockwise direction), the first abutment part 31 and the movable part 13 abut against each other again, the movable part 13 separates from the moving part 60, and the movable part 13 is abutted and locked by the first abutment part 31 again, so that the processing box switches from the second state back to the first state, and the developing roller 12 and the photosensitive drum 22 come into contact.

[0114] In one embodiment, please refer to Figure 17 The first abutting part 31, the second abutting part 32, and the third abutting part 33 are all fixedly connected to the rotating connecting part 34. In other words, the various structures of the positioning device 30 cannot move relative to each other and are rigidly connected, which simplifies the structure of the positioning device 30.

[0115] It should be noted that the positioning device 30 can be integrally formed or separately formed.

[0116] In one embodiment, please refer to Figure 18The second abutment portion 32 and the third abutment portion 33 are respectively fixedly connected to the rotating connecting portion 34. The first abutment portion 31 has a first connecting hole 31a and a waist-shaped hole 31b. A portion of the third abutment portion 33 protrudes to form a first connecting post 331, and a portion of the developing body 11 protrudes to form a guide post 111. The first abutment portion 31 is rotatably fitted onto the first connecting post 331 through the first connecting hole 31a. The guide post 111 passes through the waist-shaped hole 31b to guide the rotation of the first abutment portion 31. This improves the flexibility of the connection between the first abutment portion 31 and other structures, allowing the first abutment portion 31 to more flexibly engage and disengage from the movable portion 13 through rotation.

[0117] Specifically, the second abutting part 32, the third abutting part 33 and the rotating connecting part 34 are fixedly connected, while the connection of the first abutting part 31 is more flexible, making it easier to adjust the position of the first abutting part 31 so that the first abutting part 31 abuts against the movable part 13.

[0118] Through the cooperation of the first connecting hole 31a and the first connecting post 331, the first abutting part 31 can rotate relative to other structures of the positioning device 30 within a certain range. By providing the guide post 111 and the waist-shaped hole 31b, the rotation of the first abutting part 31 can be guided and restricted, and the first abutting part 31 can be guided to abut against the movable part 13.

[0119] In one embodiment, please refer to Figure 5 and Figure 16 The movable part 13 is a movable rod. A portion of the developing body 11 facing away from the developing roller 12 protrudes to form a second connecting post 112. The end of the movable rod facing away from the developing roller 12 has a second connecting hole 13a. The movable rod is sleeved on the second connecting post 112 through the second connecting hole 13a, so that the movable rod can rotate around the second connecting post 112. This facilitates the movement of the movable rod relative to the developing body 11.

[0120] In fact, the end of the movable rod close to the developing roller 12 and the photosensitive drum 22 is used to cooperate with the moving part 60 and the positioning device 30, while the end of the movable rod away from the developing roller 12 and the photosensitive drum 22 is used to rotatably connect with the developing body 11. This not only improves the flexibility of the connection between the movable rod and the developing body 11, but also facilitates the contact and cooperation with the moving part 60 and the positioning device 30 to realize the state switching between the developing roller 12 and the photosensitive drum 22.

[0121] In the description of this application, the references to terms such as "in one embodiment," "in some embodiments," "in a specific embodiment," or "exemplary," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine the different embodiments or examples described in this application, as well as the features of the different embodiments or examples.

[0122] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the protection scope of this application.

Claims

1. A processing box, characterized in that, The processing box is used to cooperate with a moving part of the imaging device, and the processing box includes: A developing unit, comprising a developing body, a developing roller, and a movable part, wherein the developing roller and the movable part are movably disposed on the developing body; A photosensitive unit, comprising a photosensitive body and a photosensitive drum movably disposed on the photosensitive body, the photosensitive body being movably connected to the developing body; A positioning device, which is movably disposed on the developing unit; The processing box has at least a first state and a second state; when the processing box is in the first state, the positioning device abuts against the movable part, and the movable part is separated from the moving part, and the movable part is in a first position that causes the developing roller and the photosensitive drum to contact each other; When the processing box is in the second state, the positioning device is separated from the movable part, the movable part abuts against the moving part, and the movable part is in a second position that separates the developing roller and the photosensitive drum; The positioning device, by cooperating with the moving member, switches between contacting and separating from the movable part, and the movable part, by cooperating with the moving member, switches between contacting and separating from the moving member, causing the processing box to switch between at least the first state and the second state.

2. The processing box according to claim 1, characterized in that, The processing box includes a first elastic element and a second elastic element. The first elastic element is disposed at one end of the developing body near the developing roller, and the first elastic element is connected to the developing body and the movable part respectively, so as to apply a first torque to the developing body. The first torque causes the developing body to have a rotational effect that drives the developing roller to rotate in a first direction. The second elastic element is disposed at the end of the developing body away from the developing roller, and the second elastic element is connected to both the developing body and the photosensitive body to apply a second torque to the developing body. The second torque causes the developing body to have a rotational effect that drives the developing roller to rotate in a second direction. The first torque is opposite to the direction of the second torque, the first direction is opposite to the direction of the second direction, and the first direction is the direction in which the developing roller rotates toward the side away from the photosensitive drum.

3. The processing box according to claim 2, characterized in that, When the processing box is in the second state, the first torque is greater than the second torque.

4. The processing box according to claim 1, characterized in that, The movable part includes an abutting end; when the processing box is in the first state, the distance between the abutting end and the developing roller is a first gap; when the processing box is in the second state, the abutting end abuts against the movable member and can move with the movable member, the distance between the abutting end and the developing roller is a second gap, and the minimum value of the second gap is less than the first gap.

5. The processing box according to claim 1, characterized in that, The processing box also includes a third state, in which the positioning device is separated from the movable part and the movable part is separated from the moving part, and the movable part is in a third position that brings the developing roller and the photosensitive drum into contact. The positioning device and the movable part cooperate with the moving part respectively to switch the processing box between the first state, the second state and the third state.

6. The processing box according to any one of claims 1-5, characterized in that, The positioning device includes a first abutting part, a second abutting part, a third abutting part, and a rotating connecting part. The first abutting part, the second abutting part, and the third abutting part are respectively disposed on the rotating connecting part, which is rotatably disposed on the developing body. When the processing cartridge is in the first state, the first abutting part abuts against the movable part; when the processing cartridge is in the second state, the first abutting part separates from the movable part. The movable member moves to selectively abut and push against one of the second and third abutting portions, causing the first abutting portion to rotate circumferentially around the rotating connection portion, thereby switching between abutting and separating from the movable portion.

7. The processing box according to claim 6, characterized in that, When the processing box is in the first state, the second abutment and the movable part are both located on the side of the moving member away from the photosensitive drum, and the third abutment is located on the side of the moving member close to the photosensitive drum; the moving member moves towards the side away from the photosensitive drum to abut against the second abutment and pushes the second abutment to rotate in a third direction, so that the first abutment is switched to separate from the movable part, and the moving member abuts against the movable part, and the processing box switches to the second state; wherein, the third direction is the direction in which the second abutment rotates towards the side away from the third abutment.

8. The processing box according to claim 7, characterized in that, During the process of the processing box switching from the second state to the first state, the moving member moves toward the side closer to the photosensitive drum to abut against the third abutment and pushes the third abutment to rotate in the fourth direction, so that the first abutment switches to abut against the movable part, and the moving member separates from the movable part, and the processing box switches to the first state; wherein, the fourth direction is opposite to the third direction.

9. The processing box according to claim 6, characterized in that, The first abutting part, the second abutting part, and the third abutting part are all fixedly connected to the rotating connecting part; or, The second abutting part and the third abutting part are respectively fixedly connected to the rotating connecting part. The first abutting part has a first connecting hole and a waist-shaped hole. A portion of the third abutting part protrudes to form a first connecting post. A portion of the developing body protrudes to form a guide post. The first abutting part is rotatably sleeved on the first connecting post through the first connecting hole. The guide post passes through the waist-shaped hole to guide the first abutting part to rotate.

10. The processing box according to any one of claims 1-5, characterized in that, The movable part is a movable rod. A portion of the developing body at the end opposite to the developing roller protrudes to form a second connecting post. The movable rod at the end opposite to the developing roller has a second connecting hole. The movable rod is sleeved on the second connecting post through the second connecting hole so that the movable rod can rotate around the second connecting post.

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