Process cartridge

Abstract

The utility model relates to detachably install to the developing cartridge in the imaging equipment provided with force applying part, and the developing cartridge includes: photosensitive unit has photosensitive casing and rotatably sets up photosensitive drum in photosensitive casing, and photosensitive drum extends along left and right directions, developing unit, developing unit with photosensitive unit movably connects, and developing unit has developing casing and rotatably sets up developing roller in developing casing, and developing roller extends along left and right directions, and developing roller and photosensitive drum can convert between close state and separation state, first force receiving member, relative to developing casing and moves along front and back directions, is used to receive the separating force that force applying part applied, to make developing roller and photosensitive drum convert from close state to separation state, second force receiving member, with first force receiving member and separate formation, rotatably set up relative to developing casing, is used to receive the restoring force that force applying part applied, to make developing roller and photosensitive drum convert from separation state to close state.

Description

Technical Field

[0001] This utility model relates to the field of electrophotographic imaging, and more particularly to a processing box that can be detachably installed in an electrophotographic imaging device. Background Technology

[0002] A processing box is provided with a first force receiver and a second force receiver. The processing box can be detachably installed into an imaging device provided with a force-applying element. The first force receiver is used to receive the separation force applied by the force-applying element to separate the developing roller and the photosensitive drum disposed in the processing box from each other. The second force receiver is used to receive the restoring force applied by the force-applying element to bring the developing roller and the photosensitive drum disposed in the processing box closer to each other.

[0003] However, since the first force receiver and the second force receiver are integrated, if one of them is damaged, both the first force receiver and the second force receiver need to be disassembled for repair or replacement, which is complicated and wasteful. Utility Model Content

[0004] This utility model provides a processing box to solve the above-mentioned technical problems. The specific solution is as follows:

[0005] A processing unit, detachably mounted to an imaging device equipped with a force-applying component, includes: a photosensitive unit having a photosensitive housing and a photosensitive drum rotatably disposed within the photosensitive housing, the photosensitive drum extending in a left-right direction; a developing unit movably connected to the photosensitive unit, the developing unit having a developing housing and a developing roller rotatably disposed within the developing housing, the developing roller extending in a left-right direction, the developing roller and the photosensitive drum being switchable between a close-up state and a separated state, the processing unit performing imaging operation when the developing roller and the photosensitive drum are in a close-up state, and not performing imaging operation when the developing roller and the photosensitive drum are in a separated state; a first force receiving member, movable relative to the developing housing in a front-back direction, for receiving a separation force applied by the force-applying component to change the developing roller and the photosensitive drum from a close-up state to a separated state; and a second force receiving member, separately formed from the first force receiving member, rotatably disposed relative to the developing housing, for receiving a restoring force applied by the force-applying component to change the developing roller and the photosensitive drum from a separated state to a close-up state.

[0006] When projected along the left-right direction, the straight line passing through the rotation center of the developing unit is parallel to the up-down direction; when the developing roller and the photosensitive drum are in the close-up and separated states, in the front-back direction, the pushing position of the second force receiving member that pushes the developing unit and the position of the second force receiving member that receives the restoring force are always on the same side of the straight line.

[0007] The first force receiving element is slidably disposed in the developing unit.

[0008] The second force receiver is rotatably disposed in the developing unit, and there is a gap between the second force receiver and the first force receiver in the left-right direction.

[0009] When viewed from the left and right, the second force receiver coincides with the first force receiver.

[0010] The developing unit is further provided with a second pushing part; the second force receiving member also includes a second main body and a third force receiving part and a fourth force receiving part connected to the second main body. In the rotation direction of the second force receiving member, the third force receiving part and the fourth force receiving part are spaced apart. The third force receiving part is used to receive the restoring force applied by the force applying member. Under its own gravity, the fourth force receiving part contacts the second pushing part. When the force applying member applies a restoring force to the third force receiving part, the fourth force receiving part is used to push the second pushing part.

[0011] In the rotational direction of the second force receiving member, the second pushing part is located between the third force receiving part and the fourth force receiving part.

[0012] The second force receiving member also includes a clearance portion disposed between the third force receiving portion and the fourth force receiving portion, the clearance portion being used to avoid the second pushing portion.

[0013] In the front-back direction, the position of the second force receiving member that pushes the second pushing part is further away from the straight line passing through the rotation center of the developing unit than the position of the third force receiving part that receives the restoring force, and the straight line is parallel to the up-down direction.

[0014] The processing box also includes a first end cap and an actuating member disposed on the first end cap. The actuating member is used to keep the developing roller and the photosensitive drum separated. In the vertical direction, the actuating member is located above the rotation center of the developing unit, and the second force receiving member is located below the rotation center of the developing unit. Attached Figure Description

[0015] Figure 1 This is a perspective view of the processing box involved in this utility model.

[0016] Figure 2 This is an exploded view of some components of the processing box involved in this utility model.

[0017] Figure 3 This is a schematic diagram of the first end cap and the first force receiving component in the processing box involved in this utility model.

[0018] Figure 4 This is a schematic diagram of the first end cap in the processing box involved in this utility model.

[0019] Figure 5A and Figure 5BThis is a schematic diagram of the first protective cover and the second force receiving component in the processing box involved in this utility model.

[0020] Figure 5C This is a schematic diagram of the first cover and the second force receiving component viewed from right to left in the left-right direction after the hidden part of the processing box of this utility model is removed and before the developing roller is separated from the photosensitive drum.

[0021] Figure 5D This is a schematic diagram of the processing box involved in this utility model when viewed from bottom to top along the vertical direction after the hidden parts are removed.

[0022] Figure 6A This is a schematic diagram of the processing box involved in this utility model, viewed from right to left, before the developing roller separates from the photosensitive drum.

[0023] Figure 6B This is a schematic diagram of the processing cartridge involved in this utility model, before the developing roller and photosensitive drum are separated, with some components hidden.

[0024] Figure 6C This is a schematic diagram of the developing roller and the photosensitive drum before separation when viewed from right to left in the left-right direction after the hidden parts of the processing box involved in this utility model are removed.

[0025] Figure 7A This is a schematic diagram of the processing box involved in this utility model, showing the developing roller and the photosensitive drum after separation when viewed from right to left in the left-right direction.

[0026] Figure 7B This is a schematic diagram of the processing cartridge involved in this utility model, after the developing roller and the photosensitive drum are separated and some components are hidden.

[0027] Figure 7C This is a schematic diagram showing the developing roller and photosensitive drum separated when viewed from right to left in the left-right direction after the hidden parts of the processing box involved in this utility model are removed. Detailed Implementation

[0028] The processing box 100 is designed for detachable installation into an imaging device equipped with a force-applying component, such as... Figure 1 and Figure 2As shown, the processing cartridge 100 includes a photosensitive unit 1 and a developing unit 2. The photosensitive unit 1 includes a photosensitive housing 11 and a photosensitive drum 12 rotatably disposed in the photosensitive housing 11. The photosensitive drum 12 has a first rotation axis L1 parallel to the left-right direction. The developing unit 2 includes a developing housing 21 and a developing roller 22 rotatably disposed in the developing housing 21. The developing roller 22 has a second rotation axis L2 parallel to the left-right direction. A toner receiving cavity for holding toner is formed in the developing housing 21. The developing roller 22 is used to carry toner. In the radial direction of the photosensitive drum 12 / developing roller 22, the developing roller 22 is disposed opposite to the photosensitive drum 12. When the processing cartridge 100 performs imaging work in the imaging device, the developing roller 22 supplies toner to the photosensitive drum 12 on which an electrostatic latent image is formed, so as to develop the electrostatic latent image.

[0029] Continue as Figure 1 and Figure 2 As shown, the processing box 100 also includes a driving force receiving and transmitting assembly 3. The driving force receiving and transmitting assembly 3 includes a first driving force receiving component 311 and a driving force transmitting component 32. The first driving force receiving component 311 is used to combine with the driving force output component in the imaging device to receive driving force. The driving force transmitting component 32 can directly / indirectly transmit the driving force to the developing roller 22 to drive the developing roller 22 to rotate.

[0030] In the following text, the direction parallel to the photosensitive drum 12 / developing roller 22 is the left-right direction / longitudinal direction / axial direction. Further, the photosensitive drum 12 / developing roller 22 extends along the left-right direction. In the left-right direction, the first driving force receiver 311 is disposed at one end of the processing box 100. The end where the first driving force receiver 311 is disposed is defined as the driving end. In the left-right direction, the end opposite to the driving end is the non-driving end. The direction intersecting with the left-right direction is the front-back direction / lateral direction. The processing box 100 is installed forward and removed backward in approximately the front-back direction. The direction intersecting with both the left-right direction and the front-back direction is the up-down direction / vertical direction. Preferably, the left-right direction, the front-back direction, and the up-down direction are perpendicular to each other.

[0031] like Figure 1 and Figure 2 As shown, the processing box 100 also includes a first end cap 41. In the left-right direction, the first end cap 41 is disposed at the end of the photosensitive housing 11 / developing housing 21. The first end cap 41 is integrally or separately formed with the photosensitive housing 11. The developing unit 2 is movably connected to the photosensitive unit 1 through the first end cap 31. In some embodiments, the first driving force receiving member 311 is exposed through the first end cap 31 to receive driving force.

[0032] Continue as Figure 1 and Figure 2As shown, the processing cartridge 100 also includes a first support 23, which is detachably connected to the developing housing 21. The first support 23 is used to support at least the developing roller 22. At least a portion of the drive force transmission member 32 and the first drive force receiver 311 are rotatably mounted on the first support 23 / developing housing 21. Furthermore, the first support 23 is immovable relative to the developing housing 21.

[0033] Continue as Figure 1 and Figure 2 As shown, the processing box 100 also includes a first cover 24, in which at least a portion of the driving force transmission member 32 is blocked in the left-right direction to protect the driving force transmission member 32 and prevent the driving force transmission member 32 from being damaged by collision; furthermore, the first cover 24 is not movable relative to the developing housing 21.

[0034] In the left-right direction, the first end cap 41, the first protective cap 24, the first bracket 23, and the developing shell 21 are arranged sequentially from right to left.

[0035] In some embodiments, the first cover 24 includes a first cover body 241, a neck 242 disposed in the first cover body 241, a first exposure hole 243 passing through the neck 242, and a third guide portion 244 disposed in the first cover body 241. At least a portion of the first driving force receiver 311 is supported by the neck 242 and exposed from the second exposure hole 243. The neck 242 can make the rotation of the first driving force receiver 311 more stable. As one embodiment, the third guide portion 244 is provided with The third guide portion 244 is arc-shaped and located radially in the neck 242. It guides the rotation of the developing unit 2. The first end cap 41 is also provided with a third guided portion 414 that cooperates with the third guide portion 244. The third guided portion 414 guides the movement trajectory of the third guide portion 244. Further, the third guide portion 244 is configured as a protrusion and the third guided portion 414 is configured as a groove, or the third guide portion 244 is configured as a groove and a protrusion, and the third guided portion 414 is configured as a protrusion. Further, the rotation center of the developing unit 2 is the center of the third guide portion 244. In the left-right direction, the center of the third guide portion 244 coincides with the rotation center L4 of the first driving force receiving member 311. That is to say, the rotation center of the developing unit 2 coincides with the rotation center L4 of the first driving force receiving member 311.

[0036] like Figure 1 and Figure 2As shown, the processing cartridge 100 also includes a separation and recovery component 5, which is used to switch the developing roller 22 and the photosensitive drum 12 between a close-up state and a separated state. Furthermore, when the developing roller 22 and the photosensitive drum 12 are in a close-up state, the processing cartridge 100 can perform imaging / development work. At this time, the developing roller 22 and the photosensitive drum 12 can be in contact or not in contact, as long as imaging work can be performed. When the developing roller 22 and the photosensitive drum 12 are in a separated state, the processing cartridge 100 does not perform imaging / development work.

[0037] In some implementations, such as Figure 2 As shown, the separation recovery member 5 includes a force receiving member 51 and an actuating member 52. In one embodiment, the force receiving member 51 and the actuating member 52 are formed separately. The force receiving member 51 is used to receive the force applied by the force-applying member to rotate the developing unit 2 relative to the photosensitive unit 1, thereby switching the developing roller 22 and the photosensitive drum 12 between a close state and a separated state. The actuating member 52 is used to keep the developing roller 22 and the photosensitive drum 12 in a separated state. For example, the actuating member 52 is movably / slidably disposed on the first end cover 41 in the left-right direction. The actuating member 52 is provided with a protrusion, and the first cover 24 is provided with a groove that mates with the protrusion. When the protrusion enters the groove, the developing roller 22 and the photosensitive drum 12 remain in a separated state, or in other words, the first cover 24 is locked relative to the first end cover 41.

[0038] In some implementations, such as Figure 1 and Figure 2 As shown, the force receiving component 51 includes a first force receiving element 511 and a second force receiving element 512. In one embodiment, the first force receiving element 511 and the second force receiving element 512 are separately formed. When one of the first force receiving element 511 or the second force receiving element 512 is damaged, it can be repaired or replaced simply by disassembling the damaged component, greatly improving operational convenience and reducing waste and cost savings. In the front-rear direction, there is a space 513 between the first force receiving element 511 and the second force receiving element 512, which is used to accommodate at least a portion of the force-applying component. Figure 6C As shown, when viewed in the left-right direction, the first force receiver 511 and the second force receiver 512 coincide, which can reduce the size of the gap space 513 in the front-back direction and reduce the stroke of the force-applying member; in some embodiments, such as Figure 5DAs shown, the first force receiver 511 and the second force receiver 512 do not contact each other in the left-right direction. That is, there is a gap between the first force receiver 511 and the second force receiver 512 in the left-right direction. Specifically, there is a gap between the first main body portion 5111 of the first force receiver 511 and the second force receiver 512 in the left-right direction to avoid interference between the first force receiver 511 and the second force receiver 512.

[0039] In some embodiments, the first force receiving member 511 is used to receive a first force (e.g., a separation force) applied by the force applying member to cause the developing housing 21 relative to the photosensitive housing 11 along r1 (e.g., Figure 6A The developing roller 22 rotates in the direction shown in the figure, thereby separating the developing roller 22 from the photosensitive drum 12. The second force receiving member 512 is used to receive the second force (e.g., restoring force) applied by the force applying member, so that the developing housing 21 rotates in the opposite direction to the photosensitive housing 11 in the direction shown in r1, thereby bringing the developing roller 22 and the photosensitive drum 12 closer to each other.

[0040] In some embodiments, the first force receiver 511 is movably disposed relative to the developing housing 21. As one embodiment, the first force receiver 511 is movably disposed on the first end cap 41 or at other locations on the developing unit 2. For example, the first force receiver 511 is movably disposed on the first end cap 41, and the first force receiver 511 is configured to move / slide in the front-back direction. Specifically, such as... Figure 2 , Figure 3 and Figure 4 As shown, the first force receiving member 511 includes a first main body 5111, a first force receiving part 5112, a second force receiving part 5113, and a first guided part 5114. The first force receiving part 5112, the second force receiving part 5113, and the first guided part 5114 are all connected to the first main body 5111. Preferably, the first force receiving part 5112, the second force receiving part 5113, and the first guided part 5114 are all integrally formed with the first main body 5111 to reduce the number of parts and reduce the complexity of assembly.

[0041] Furthermore, the first force-receiving part 5112 is used to receive the separation force applied by the force-applying member, and the second force-receiving part 5113 is used to interact with the first cover 24. In some embodiments, such as Figure 2 , Figure 5A and Figure 5BAs shown, the first cover 24 is also provided with a first pushing part 246. The first pushing part 246 is used to interact with the second force receiving part 5113. Specifically, when the force applying member applies a separation force to the first force receiving member 511 / first force receiving part 5112, the second force receiving part 5113 is used to push the first pushing part 246, thereby driving the first cover 24 to rotate in the direction shown by r1. When the force applying member applies a restoring force to the second force receiving member 512, the second force receiving part 5113 is used to be pushed by the first pushing part 246.

[0042] In some implementations, such as Figure 2 , Figure 3 and Figure 4 As shown, the first force-receiving part 5112 extends in the front-back direction. In the front-back direction, the first force-receiving part 5112 / the second force-receiving part 5113 is spaced apart from the first guided part 5114. Furthermore, in the front-back direction, the first force-receiving part 5112 / the second force-receiving part 5113 is located in front of the first guided part 5114. In the vertical direction, the first force-receiving part 5112 is located below the second force-receiving part 5113.

[0043] In some implementations, such as Figure 2 and Figure 3 As shown, the first force-receiving part 5112 has a first force-receiving surface 5112a that receives the separation force applied by the force-applying member, and the second force-receiving part 5113 has a second force-receiving surface 5113a that interacts with the first cover 24. Both the first force-receiving surface 5112a and the second force-receiving surface 5113a are parallel to the left-right direction, and both the first force-receiving surface 5112a and the second force-receiving surface 5113a intersect the front-back direction / up-down direction. Further, the first force-receiving surface 5112a and the second force-receiving surface 5113a are set as inclined surfaces. Specifically, the first force-receiving surface 5112a is inclined to the rear-downward direction, and the second force-receiving surface 5113a is inclined to the front-upward direction. The first force-receiving surface 5112a and the second force-receiving surface 5113a can be parallel to each other or not parallel.

[0044] In some implementations, such as Figure 3 and Figure 4 As shown, a first guide portion 415 is provided on the first end cap 41, and a first guided portion 5114 is used to cooperate with the first guide portion 415 so that it can move / slide in the front-back direction. As one embodiment, the first guide portion 415 is configured as a protrusion and extends in the front-back direction, and the first guided portion 5114 is configured as a groove.

[0045] In some implementations, such as Figure 3 and Figure 4As shown, the first end cap 41 is also provided with a first limiting part 4161 and a second limiting part 4162. In the front-rear direction, the first limiting part 4161 is located at the front end of the first guide part 415, and the second limiting part 4162 is located at the rear end of the first guide part 415. The first limiting part 4161 and the second limiting part 4162 are used to limit the distance that the first force receiving member 511 moves / slides in the front-rear direction, and are also used to prevent the first force receiving member 511 from falling out of the first guide part 45.

[0046] In some embodiments, the second force receiver 512 is movably disposed relative to the developing housing 21. As one embodiment, the second force receiver 512 is movably disposed on the first cover 24 or at other locations on the developing unit 2. For example, the second force receiver 512 is movably disposed on the first cover 24, and the second force receiver 512 is configured to rotate about a third rotation axis L3 parallel to the left-right direction. Specifically, as... Figure 2 , Figure 5A and Figure 5B As shown, the second force receiving member 512 includes a second main body 5121, a third force receiving part 5122, a fourth force receiving part 5123, and a second guided part 5124. The third force receiving part 5122, the fourth force receiving part 5123, and the second guided part 5124 are all connected to the second main body 5121. Preferably, the second main body 5121, the third force receiving part 5122, the fourth force receiving part 5123, and the second guided part 5124 are integrally formed to reduce the number of parts and reduce the complexity of assembly.

[0047] Furthermore, the third force-receiving part 5122 is used to receive the restoring force applied by the force-applying member, and the fourth force-receiving part 5123 is used to interact with the first cover 24.

[0048] In some implementations, such as Figure 2 , Figure 5A and Figure 5B As shown, in the rotational direction of the second force receiving member 512, the third force receiving part 5122 and the fourth force receiving part 5123 are arranged at intervals.

[0049] In some implementations, such as Figure 2 , Figure 5A and Figure 5B As shown, a second guide portion 245 is provided on the first cover 24, and a second guided portion 5124 is used to cooperate with the second guide portion 245. For example, the second guided portion 5124 and the second guide portion 245 are rotatably cooperated. As one embodiment, the second guide portion 245 is configured as a protrusion / axis and extends in the left-right direction, and the second guided portion 5124 is configured as a groove / hole.

[0050] In some implementations, such as Figure 2 , Figure 5A and Figure 5B As shown, a second pushing part 247 is also provided on the first cover 24. The second guide part 245 and the second pushing part 247 are spaced apart in the front-rear direction. The second pushing part 247 is used to contact the fourth force-receiving part 5123. Specifically, as shown... Figure 5C As shown, when the third force-receiving part 5122 is not subjected to the second force applied by the force-applying member, in its natural state, that is, under its own weight, the fourth force-receiving part 5213 contacts the second pushing part 247, and the second pushing part 247 restricts the second force receiving member 512 from rotating in the opposite direction as shown in r1. When the force-applying member applies a restoring force to the third force-receiving part 5122 / second force receiving member 512, the fourth force-receiving part 5123 is also used to push the second pushing part 247, thereby driving the first cover 24 to rotate in the opposite direction as shown in r1. In addition, during the process of installing the processing box 100 into the imaging device, the second force receiving member 512 will rotate in the direction shown in r1 after colliding with the components (e.g., the force-applying member) in the imaging device, thereby avoiding interference with the components in the imaging device and preventing the processing box 100 from being installed smoothly. Furthermore, when the second force receiving member 512 rotates in the direction shown in r1, the fourth force-receiving part 5213 and the second pushing part 247 disengage.

[0051] In some implementations, such as Figure 5C As shown, in the rotational direction of the second force receiver 512, the second pushing part 247 is located between the third force receiving part 5122 and the fourth force receiving part 5123. Furthermore, the second force receiver 512 also includes a clearance part 5125 disposed between the third force receiving part 5122 and the fourth force receiving part 5123. The clearance part 5125 is used to avoid the second pushing part 247, so as to prevent interference between the second main body part 5121 and the second pushing part 247 when the second force receiver 512 rotates in the direction shown by r1.

[0052] In some implementations, such as Figure 2 , Figure 5A and Figure 5B As shown, a third limiting part 248 is also provided on the first cover 24. In the left-right direction, the third limiting part 248 is located at the end of the second guide part 245. The third limiting part 248 is used to prevent the second force receiving member 512 from falling out of the second guide part 245.

[0053] like Figure 5CAs shown, when projected along the left-right direction, before the developing roller 22 separates from the photosensitive drum 12, that is, when the developing roller 22 and the photosensitive drum 12 are close together, the first straight line L5 is parallel to the up-down direction and passes through the rotation center L4 of the developing unit 2, and the second straight line L6 is parallel to the up-down direction and passes through the first rotation axis L1 of the photosensitive drum 12. In the front-back direction, the third rotation axis L3 of the second force receiving member 512 is located between the first straight line L5 and the second straight line L6. In the front-back direction, the pushing position B of the second force receiving member 512 that pushes the first cover 24 / developing housing 21 / developing unit 2 is farther away from the first straight line L5 than the restoring force receiving position A of the second force receiving member 512 that receives the restoring force.

[0054] like Figure 7C As shown, when projected along the left-right direction, after the developing roller 22 and the photosensitive drum 12 are separated, that is, when the developing roller 22 and the photosensitive drum 12 are in the separated state, in the front-back direction, the third rotation axis L3 of the second force receiving member 512 can be located in front of or behind the first straight line L5, or the first straight line L5 can also pass through the third rotation axis L3 of the second force receiving member 512. That is, in the up-down direction, the third rotation axis L3 of the second force receiving member 512 can also coincide with the first straight line L5.

[0055] In addition, such as Figure 5C and Figure 7C As shown, before and after the developing roller 22 separates from the photosensitive drum 12, in the front-to-back direction, the pushing position B of the second force receiving member 512 that pushes the first cover 24 / developing housing 21 / developing unit 2 and the restoring force receiving position A of the second force receiving member 512 that receives the restoring force are always located on the same side of the first straight line L5.

[0056] like Figure 6A , Figure 6B and Figure 6C As shown, the processing cartridge 100 can perform imaging / development operations. When the processing cartridge 100 does not need to perform imaging / development operations, the force-applying member applies a separation force to the first force receiver 511 / first force-receiving part 5112. The first force receiver 511 is forced to move / slide forward along the first guide part 415 in the front-back direction, thereby driving the second force-receiving part 5113 to push the first pushing part 247 on the first cover 24, causing the first cover 24 to rotate in the direction shown by r1, and driving the first bracket 23 / developing housing 21 to rotate relative to the photosensitive unit 1 in the direction shown by r1, thereby driving the developing roller 22 to separate from the photosensitive drum 12. At this time, as shown by r1, the first force receiver 23 / developing housing 21 rotates relative to the photosensitive unit 1 in the direction shown by r1. Figure 7A and Figure 7C As shown, the developing roller 22 and the photosensitive drum 12 are in a separated state.

[0057] When the processing cartridge 100 needs to perform imaging / development again, such as Figure 7A , Figure 7B and Figure 7C As shown, the force-applying member applies a restoring force to the second force-receiving member 512 / third force-receiving part 5122. The second force-receiving member 512 is forced to rotate around the third rotation axis L3 / second guide part 245 in the opposite direction of the direction shown by r1, thereby driving the fourth force-receiving part 5213 to push the third limiting part 246 on the first cover 24, causing the first cover 24 to rotate in the opposite direction of the direction shown by r1, and driving the first bracket 23 / developing housing 21 to rotate relative to the photosensitive unit 1 in the opposite direction of the direction shown by r1, thereby driving the developing roller 22 to approach the photosensitive drum 12. At this time, as Figure 6A and Figure 6C As shown, the developing roller 22 and the photosensitive drum 12 are in a close proximity state; and when the first cover 24 rotates in the opposite direction of the direction shown by r1, it also drives the first pushing part 247 on the first cover 24 to push the second force receiving part 5113 of the first force receiving member 511, thereby causing the first force receiving member 511 to move backward / slide and reset along the first guide part 415 in the front-back direction.

[0058] Beneficial effects:

[0059] 1. The first force receiver 511 and the second force receiver 512 are set separately. When one of the first force receiver 511 and the second force receiver 512 is damaged, it is only necessary to disassemble the damaged component for repair or replacement, which greatly improves the convenience of operation, reduces waste, and saves costs.

[0060] 2. When viewed from the left and right direction, the first force receiving member 511 and the second force receiving member 512 coincide, which can reduce the size of the gap space 513 in the front and back direction and reduce the stroke of the force applying member.

[0061] 3. In the left-right direction, the first force receiver 511 and the second force receiver 512 do not contact each other. That is, in the left-right direction, there is a gap between the first force receiver 511 and the second force receiver 512 to avoid interference between the first force receiver 511 and the second force receiver 512.

[0062] 4. The pushing position B of the second force receiving member 512 pushing the first cover 24 / developing housing 21 / developing unit 2 is further away from the straight line L5 than the restoring force receiving position A of the second force receiving member 512 receiving the restoring force. In this way, the developing unit 2 can more easily achieve the opposite rotation in the direction shown by r1, thereby making it easier to achieve the contact between the developing roller 22 and the photosensitive drum 12, and the force application requirement of the force applying member can be reduced.

Claims

1. A processing box, detachably mounted into an imaging device equipped with a force-applying component, characterized in that, The processing box includes: A photosensitive unit has a photosensitive housing and a photosensitive drum rotatably disposed in the photosensitive housing, the photosensitive drum extending in a left-right direction; The developing unit is movably connected to the photosensitive unit. The developing unit has a developing housing and a developing roller rotatably disposed in the developing housing. The developing roller extends in the left-right direction. The developing roller and the photosensitive drum can switch between a close-to-close state and a separated state. When the developing roller and the photosensitive drum are in the close-to-close state, the processing box can perform imaging operations. When the developing roller and the photosensitive drum are in the separated state, the processing box does not perform imaging operations. The first force receiving member moves relative to the developing housing in the front-back direction to receive the separation force applied by the force applying member, so that the developing roller and the photosensitive drum change from a close state to a separated state. The second force receiver, which is separately formed from the first force receiver, is rotatably disposed relative to the developing housing and is used to receive the restoring force applied by the force-applying member so that the developing roller and the photosensitive drum change from a separated state to a close state.

2. The processing box according to claim 1, characterized in that, When projecting along the left-right direction, the straight line passing through the rotation center of the developing unit is parallel to the up-down direction; When the developing roller and the photosensitive drum are in a close-up or separated state, in the front-to-back direction, the pushing position of the second force receiver that pushes the developing unit and the position where the second force receiver receives the restoring force are always on the same side of a straight line.

3. The processing box according to claim 1, characterized in that, The first force receiving element is slidably disposed in the developing unit.

4. The processing box according to claim 1, characterized in that, The second force receiver is rotatably disposed in the developing unit, and there is a gap between the second force receiver and the first force receiver in the left-right direction.

5. The processing box according to claim 4, characterized in that, When viewed from the left and right, the second force receiver coincides with the first force receiver.

6. The processing box according to claim 4, characterized in that, The developing unit is also provided with a second pushing part; The second force receiving member further includes a second main body and a third force receiving part and a fourth force receiving part connected to the second main body. In the rotation direction of the second force receiving member, the third force receiving part and the fourth force receiving part are spaced apart. The third force receiving part is used to receive the restoring force applied by the force applying member. Under its own gravity, the fourth force receiving part contacts the second pushing part. When the force applying member applies a restoring force to the third force receiving part, the fourth force receiving part is used to push the second pushing part.

7. The processing box according to claim 6, characterized in that, In the rotational direction of the second force receiving member, the second pushing part is located between the third force receiving part and the fourth force receiving part.

8. The processing box according to claim 7, characterized in that, The second force receiving member also includes a clearance portion disposed between the third force receiving portion and the fourth force receiving portion, the clearance portion being used to avoid the second pushing portion.

9. The processing box according to claim 8, characterized in that, in In the front-back direction, the pushing position of the second force receiving member that pushes the second pushing part is further away from the straight line passing through the rotation center of the developing unit than the position of the third force receiving part that receives the restoring force, and the straight line is parallel to the up-down direction.

10. The processing box according to any one of claims 3-9, characterized in that, The processing box also includes a first end cap and an actuating member disposed on the first end cap. The actuating member is used to keep the developing roller and the photosensitive drum separated. In the vertical direction, the actuating member is located above the rotation center of the developing unit, and the second force receiving member is located below the rotation center of the developing unit.

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