A processing box

Abstract

The present invention discloses a processing box, which can be detachably installed in an imaging device including a force-applying member, including: a photosensitive drum; a developing roller; a driving force receiving member, which is arranged at one longitudinal side end of the processing box; a force receiving member, which is arranged on the same side end of the processing box as the driving force receiving member, and has a spacing force receiving part, which can receive the spacing force provided by the force-applying member to space the developing roller from the photosensitive drum; when the processing box is installed in the imaging device, the spacing force receiving part is positioned at the lower end side of the axis of the developing roller; when the processing box is installed in the imaging device, the force receiving member can be pushed by the force-applying member and move upward at least in the gravity direction. The technical problem that the force-applying member in the imaging device in the prior art is easily stuck when pushing the developing unit to rotate is solved.

Description

Technical Field

[0001] The present invention relates to a process cartridge used in an image forming apparatus such as a laser printer, a copier or a fax machine. Background Art

[0002] The imaging device forms an image on a recording material using an electrophotographic imaging process. Examples of imaging devices include electrophotographic copiers, electrophotographic printers (e.g., laser beam printers, LED printers), fax machines, word processors, and the like. The processing box includes at least one of an electrophotographic photosensitive drum as an image bearing member and a processing device (developer bearing member (developing roller)) capable of acting on the drum. The electrophotographic photosensitive drum and the processing device are integrally constructed as a box that can be detachably mounted in the imaging device. The box may include an integrated drum and a developing roller, or may include a drum, or may include a developing roller. A box including a photosensitive drum is a drum unit, and a box including a developing roller is a developing unit.

[0003] like Figure 1a and Figure 1b As shown, the prior art discloses a separation structure of a drum unit 101 and a developing unit 100, wherein the process cartridge is installed in the image forming device along the L direction, and a force member 105 in the image forming device moves along the M and N directions, and the force member 105 is supported at a predetermined position by a spring 106. When the process cartridge is installed in the image forming device along the L direction, a force receiving member 103 provided on the developing unit 100 presses the force member 105 to a compressed position, and the force member 105 moves in the N direction at the compressed position; when the protrusion 107 on the force member 105 passes over the force receiving member 103, the force member 105 is bounced up by the spring 106 and engages with the recess 108 on the force receiving member 103, and the force member 105 moves in the M direction again and pushes the developing unit 100 to rotate through the force receiving member 103, so that the developing roller 102 in the developing unit 100 is separated from the photosensitive drum 104 in the drum unit 101. The above technical solution uses a mechanism in which the protrusion on the force-applying member engages with the recess of the force-receiving member in the developing unit, so that the force-applying member is prone to getting stuck when pushing the developing unit to rotate. Since the force-applying member 105 in the imaging device needs to be pressed to retract, the spring 106 supporting the force-applying member 105 is always in a compressed state, which easily causes the spring 106 to be inflexible in rebounding, thereby causing the force-applying member 105 to be unable to normally engage with the force-receiving member 103. Summary of the invention

[0004] The purpose of the present invention is to solve the technical problem in the prior art that the force applying member in the imaging device is prone to get stuck when pushing the developing unit to rotate.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] A process cartridge is detachably mounted in an image forming device including a force applying member, the process cartridge comprising:

[0007] Photosensitive drum;

[0008] Developing roller;

[0009] A drum frame, used for supporting the photosensitive drum;

[0010] A developing frame, used for supporting the developing roller;

[0011] A driving force receiving member, disposed at one longitudinal side end of the process cartridge, for receiving a driving force in the image forming device to drive the developing roller to rotate;

[0012] a force receiving member, disposed on the same side end of the process cartridge as the driving force receiving member, having a spacing force receiving portion, the spacing force receiving portion being capable of receiving the spacing force provided by the force applying member to space the developing roller from the photosensitive drum;

[0013] When the process cartridge is installed in the image forming apparatus, the photosensitive drum is positioned at the lower end side of the process cartridge, the axis of the photosensitive drum is positioned at the lower end side of the axis of the developing roller, and the spacing force receiving portion is positioned at the lower end side of the axis of the developing roller;

[0014] When the process cartridge is mounted in the image forming apparatus, the force receiving member may be urged by the force applying member to move upward at least in the direction of gravity.

[0015] Furthermore, the force receiving member has a first side surface, the force applying member abuts against the first side surface to transmit the force for separating the developing roller and the photosensitive drum from each other to the force receiving member, and the first side surface is a vertical surface.

[0016] Furthermore, the process cartridge further comprises an end cover disposed at one side end of the developing cartridge frame, and the force receiving member is disposed on the end cover.

[0017] Furthermore, a first limiting portion and a second limiting portion are formed on the processing box, the distance between the first limiting portion and the second limiting portion becomes smaller from top to bottom, and the force receiving member can be movably installed between the first limiting portion and the second limiting portion.

[0018] Furthermore, an anti-slip component is attached to the force receiving member, and the force applying member applies force to the force receiving member by contacting the anti-slip component.

[0019] Furthermore, the anti-slip component is configured as a sponge.

[0020] Furthermore, a first limiting portion and a second limiting portion are formed on the processing box, and the force receiving member is installed between the first limiting portion and the second limiting portion. When the force receiving member receives the force transmitted by the force applying member to separate the developing roller and the photosensitive drum from each other, the first limiting portion and the second limiting portion limit the movement of the force receiving member in the direction of gravity.

[0021] Furthermore, the force applying member is connected to a spring, and when the process cartridge is installed to the imaging device, the pressure applied by the force receiving member to the force applying member is smaller than the urging force applied by the spring to the force applying member.

[0022] Furthermore, the force-applying member is connected to a spring, the force-receiving member is connected to an elastic member, and the urging force applied by the elastic member to the force-receiving member is smaller than the urging force applied by the spring to the force-applying member.

[0023] Furthermore, the developing frame is provided with a mounting hole, the force receiving member is provided with a rotation support portion which can be mounted in the mounting hole, and the force receiving member can be forced by the force applying member to rotate upward around the rotation support portion.

[0024] Compared with the prior art, the force receiving member of the process cartridge in the embodiment of the present invention is freely movable in the up-down direction, but is restricted in the left-right direction. Therefore, when the process cartridge is installed in the imaging device, the force receiving member can be moved to a position where it does not interfere with the force applying member in the imaging device; when the force applying member in the imaging device moves left-right, the force receiving member can cooperate with the force applying member to separate the developing roller and the photosensitive drum of the process cartridge from each other. The technical problem that the force applying member in the imaging device in the prior art is prone to getting stuck when pushing the developing unit to rotate is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1a and Figure 1b It is a schematic diagram of the cooperation between the processing box and the separation mechanism in the imaging device in the prior art;

[0026] Figure 2 is a schematic structural diagram of a process cartridge in an embodiment of the present invention;

[0027] Figure 3 is a schematic diagram of the exploded structure of the driving side of the process cartridge in an embodiment of the present invention;

[0028] Figure 4 is a schematic diagram of a force receiving member of a process cartridge in an embodiment of the present invention being assembled to a process cartridge frame;

[0029] Figure 5 is a schematic diagram of a state in which a force receiving member of the process cartridge cooperates with a force applying member in the image forming device when the process cartridge is installed in the image forming device in an embodiment of the present invention;

[0030] Figure 6 is a schematic diagram of a first state in which a force receiving member of the process cartridge cooperates with a force applying member in the image forming device when the process cartridge has been installed in the image forming device in an embodiment of the present invention;

[0031] Figure 7 is a schematic diagram of a second state in which a force receiving member of the process cartridge cooperates with a force applying member in the image forming device when the process cartridge has been installed in the image forming device in the embodiment of the present invention;

[0032] Figure 8 is a schematic diagram of a partial structure of the driving side in Embodiment 2 of the present invention;

[0033] Fig. 9 is a schematic diagram of the decomposed structure of the driving side in Embodiment 2 of the present invention;

[0034] Fig.10 is a schematic diagram of the exploded structure of the force receiving component in Embodiment 2 of the present invention;

[0035] Fig.11 is a schematic diagram of a partial structure of a force receiving component in Embodiment 2 of the present invention;

[0036] Fig.12 is a schematic diagram of a first state of cooperation between a force receiving component and a force applying component in Embodiment 2 of the present invention;

[0037] Fig.13 is a schematic diagram of a second state of cooperation between the force receiving component and the force applying component in Embodiment 2 of the present invention;

[0038] Fig.14 is a partial structural schematic diagram of a force receiving component in Embodiment 3 of the present invention;

[0039] Fig.15 is a schematic diagram of the exploded structure of the force receiving component in Embodiment 3 of the present invention;

[0040] Fig.16 is a schematic diagram of the process of cooperation between the force receiving component and the force applying component in Embodiment 3 of the present invention;

[0041] Fig.17 It is a structural schematic diagram of adding an elastic member between the force receiving member and the powder bin body in Example 3 of the present invention. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and technical effect of the embodiment of the present invention clearer, the technical scheme of the developing unit of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the described embodiment is only a preferred embodiment of the present invention, not all embodiments. Based on the embodiment of the present invention, other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present invention.

[0043] Example 1

[0044] like Figure 2 , which is a schematic diagram of the structure of the processing box 1 in the embodiment of the present invention. The processing box 1 includes: a developing unit 2, including a developing frame, in which a developing roller 4 is accommodated; a drum unit 3, including a drum frame, accommodating a photosensitive drum 5; a driving force receiving member 9, which is arranged on one longitudinal side of the processing box 1 and can receive the power transmitted by the imaging device to drive the developing roller 4 to rotate; a side cover 6, which is arranged on the same side of the processing box 1 as the driving force receiving member 9, and supports one end of the developing unit 2 and the drum unit 3; a force receiving member 7, which is arranged on the developing unit 2 and can receive external force to push the developing unit 2 to rotate, so that the developing roller 4 in the developing unit 2 is separated from the photosensitive drum 5 in the drum unit 3.

[0045] like Figure 3 As shown, it is a schematic diagram of the exploded structure of the processing box 1 on the side where the side cover 6 is provided in this embodiment. In this embodiment, the side of the processing box 1 where the driving force receiving member 9 is provided is defined as the driving side. The developing frame includes the side cover 6, the end cover 8, the protective cover 10 and the powder bin body. Among them, the end cover 8, the driving force receiving member 9 and the protective cover 10 are all arranged on the driving side of the developing unit 2. Specifically, the end cover 8 is fixed to one side of the powder bin body of the developing unit 2, the driving force receiving member 9 is installed on the end cover 8, the protective cover 10 is sleeved on the driving force receiving member 9 and combined with the end cover 8, and the protective cover 10 passes through the through hole 6a formed on the side cover 6 and is supported by the side cover 6. In this embodiment, the force receiving member 7 is specifically arranged on the end cover 8. Optionally, the force receiving member 7 can also be arranged on the protective cover 10, or the force receiving member 7 can be arranged on the frame of the developing unit 2, as long as the force receiving member 7 receives the external force and pushes the developing unit 2 to rotate. To facilitate the following description, the directions described in this embodiment are briefly defined below. The direction of gravity in which the processing box 1 is installed in the imaging device is defined as the up and down direction, the longitudinal direction of the processing box 1 is defined as the front and back direction, and the direction perpendicular to the up and down direction and the left and right direction is called the left and right direction.

[0046] like Figure 4As shown, it is a schematic diagram of the mutual assembly of the force receiving member 7, the end cover 8 and the frame of the developing unit 2 in this embodiment. Among them, the force receiving member 7 can be movably mounted on the end cover 8. Specifically, the end cover 8 is formed with a first limiting portion 8a and a second limiting portion 8b, and a roughly "inverted eight" shaped accommodating opening 8c is formed between the first limiting portion 8a and the second limiting portion 8b. The two sides of the force receiving member 7 abut against the first limiting portion 8a and the second limiting portion 8b and are placed in the accommodating opening 8c, and can move up and down in the accommodating opening 8c. It should be noted that in this embodiment, the first side surface 7b and the second side surface 7c of the force receiving member 7 abut against the first limiting portion 8a and the second limiting portion 8b respectively, and the first side surface 7b is a vertical surface, and the second side surface 7c is an inclined plane. When the force receiving member 7 moves downward along the accommodating opening 8c, since the accommodating opening 8c becomes narrower and narrower from top to bottom (that is, the distance between the first limiting portion 8a and the second limiting portion 8b becomes smaller and smaller), the movable space of the force receiving member 7 in the accommodating opening 8c gradually becomes smaller, and the first limiting portion 8a and the second limiting portion 8b gradually clamp the force receiving member 7 to limit the movement (rocking) of the force receiving member 7 in the accommodating opening 8c; when the force receiving member 7 moves upward along the accommodating opening 8c, since the accommodating opening 8c becomes wider and wider from bottom to top (that is, the distance between the first limiting portion 8a and the second limiting portion 8b becomes larger and larger), the movable space of the force receiving member 7 in the accommodating opening 8c gradually becomes larger, and the movement (rocking) of the force receiving member 7 in the accommodating opening 8c will also become larger. It should also be noted that, in this embodiment, the contact surfaces between the first side surface 7b and the second side surface 7c of the force receiving member 7 and the first limiting portion 8a, the second limiting portion 8b are smooth, that is, the friction between the first side surface 7b and the second side surface 7c and the first limiting portion 8a, the second limiting portion 8b is very small. When the force receiving member 7 moves up and down in the accommodating opening 8c, the force receiving member 7 only needs a very small upward force to move upward in the accommodating opening 8c, and the force receiving member 7 can move downward in the accommodating opening 8c due to its own gravity.

[0047] Optionally, the first limiting portion 8a may also be used to prevent the force receiving member 7 from rotating relative to the frame of the developing unit after receiving the separation force of the force applying member 105. Specifically, a protrusion is provided on the first limiting portion 8a, which protrudes toward the accommodating portion accommodating the force receiving member 7, and the protrusion is configured to prevent the force receiving member 7 from sliding and loosening in the accommodating portion when the force receiving member 7 receives an external force and drives the developing unit to rotate relative to the drum unit.

[0048] In this embodiment, a through hole 7a is formed on the force receiving member 7, and a protrusion 2a is formed on the frame of the developing unit 2. When the end cover 8 with the force receiving member 7 is assembled to the frame of the developing unit 2, the protrusion 2a passes through the through hole 7a of the force receiving member 7 and limits the up and down movement of the force receiving member 7 in the accommodating opening 8c. In this way, the force receiving member 7 will not detach from the accommodating opening 8c.

[0049] The process of separating the developing roller 4 and the photosensitive drum 5 from each other by cooperating with the force receiving member 7 and the force applying member 105 in the image forming apparatus in this embodiment will be described in detail below with reference to the accompanying drawings.

[0050] For the convenience of description, the force receiving member 7 is moved downward to a position where it can receive the force of the force applying member 105, which is called the separation force receiving position. The force receiving member 7 is moved upward from the separation force receiving position to a higher position, which is called the withdrawal position. The force receiving member 7 can move between the separation force receiving position and the withdrawal position. Figure 5 As shown, it is a schematic diagram of the installation of the processing box 1 in the imaging device in this embodiment. When the processing box 1 is installed downwardly into the imaging device, the force receiving member 7 of the processing box 1 contacts the protrusion 107 of the force applying member 105 in the imaging device. Since the force receiving member 7 is movably mounted on the end cover 8 and can move upward with only a small upward force, the protrusion 107 of the force applying member 105 can force the force receiving member 7 to move upward to the withdrawn position. It can be understood that the force applying member 105 in the imaging device is supported by the spring 106, and the force receiving member 7 can move upward under the elastic force of the spring 106. At this time, the developing roller 4 and the photosensitive drum 5 of the processing box 1 are in contact with each other.

[0051] like Figure 6 , which is a schematic diagram of the first state of the process cartridge 1 in the imaging device in this embodiment. When the process cartridge 1 has been installed in the imaging device, the force member 105 in the imaging device moves to the left, and the protrusion 107 of the force member 105 passes over the force receiving member 7, that is, the force member 105 no longer abuts against the force receiving member 7 in the up and down direction, and the force member 105 moves to the left side of the force receiving member 7. The force receiving member 7 moves downward to the separation force receiving position under the action of its own gravity, and the force receiving member 7 is gradually clamped by the first limiting portion 8a and the second limiting portion 8b. At this time, the developing roller 4 and the photosensitive drum 5 of the process cartridge 1 are in contact with each other.

[0052] like Figure 7As shown, it is a schematic diagram of the second state of the processing box 1 in the imaging device in this embodiment. The force-applying member 105 in the imaging device moves to the right, and the protrusion 107 of the force-applying member 105 abuts against the first side surface 7b of the force receiving member 7. At this time, the first side surface 7b serves as a force-bearing surface. Specifically, the first side surface 7b of the force receiving member 7 is constructed as a vertical surface extending in the gravity direction. The force-applying member 105 applies a rightward force to the force receiving member 7 by squeezing the first side surface 7b through the protrusion 107. The force receiving member 7 then drives the developing unit 2 to rotate, and the developing roller 4 and the photosensitive drum 5 are gradually separated. In this process, the force receiving member 7 is clamped by the first limiting portion 8a and the second limiting portion 8b. Even if the force-applying member 105 generates an upward force in the process of pushing the force receiving member 7 to rotate, the force receiving member 7 will not move upward, and always maintains a state of abutting against the protrusion 107 of the force-applying member 105, so that the processing box 1 is maintained in a state where the developing roller 4 and the photosensitive drum 5 are separated from each other.

[0053] Preferably, in order to make the force receiving member 7 move downward to the force receiving position more smoothly, an elastic member may be connected to the upper end of the force receiving member 7, and the downward elastic force applied by the elastic member to the force receiving member 7 forces the force receiving member 7 to move downward from the withdrawn position to the force receiving position, so that the force receiving member 7 can be kept in a vertical position at all times, and the force receiving member 7 can be prevented from being stuck in the withdrawn position due to factors such as shaking. And the downward elastic force applied by the elastic member to the force receiving member 7 is smaller than the upward elastic force applied by the spring 106 to the force applying member 105, so that the force receiving member 7 can move upward to the withdrawn position under the action of the force applying member 105.

[0054] Preferably, in order to make the force receiving member 7 cooperate with the force applying member 105 and receive the separation force more stably, an anti-slip member is provided on the force receiving surface of the force receiving member 7, i.e., the first side surface 7b. Specifically, it can be provided as a sponge. The sponge is attached to the first side surface 7b. When the protrusion 107 abuts against the sponge, the sponge can be compressed to deform. The sponge will be compressed and automatically concave to form a notch where the protrusion 107 contacts the sponge. When the protrusion 107 forces the force receiving member 7 to move, the protrusion 107 cooperates with the notch formed on the sponge due to deformation and is not easy to slip, so that the force receiving member 7 receives the separation force of the force applying member 105 more stably. In addition to being provided as a sponge, the anti-slip member can also be provided in other forms, such as soft plastic and silicone.

[0055] It should be noted that, in the description of this embodiment, the terms "upward" and "downward" do not indicate or imply a specific orientation that the device or element referred to must have, that is, they do not only refer to "upward" and "downward" in the vertical direction. It can be understood that they can also be interpreted as "obliquely upward" and "obliquely downward" at a certain angle relative to the vertical direction. In the process of installing the processing box into the imaging device, the movement mode of the force receiving member 7 can be summarized as follows: when the processing box is installed in the imaging device, the force receiving member 7 can be pushed by the force applying member 105 and move upward at least in the direction of gravity.

[0056] Example 2

[0057] Next, Embodiment 2 of the present invention is described. Figures 8 to 10 As shown, the moving direction of the force receiving member 7 and the pre-engagement position with the force applying member 105 in the image forming apparatus in the second embodiment of the present invention are different from those in the first embodiment.

[0058] In this embodiment, the force receiving assembly 20 includes a force receiving member 701 and a control device for controlling the movement of the force receiving member 701. The control device includes a force receiving rod 21, a control rod 22, a return spring 23 and a biasing member 24. The force-bearing rod 21 can abut against a rib plate 10a provided in the protective cover 10 to limit the force-bearing rod 21 from moving toward the inner side of the developing unit 2 when receiving force. Specifically, one side end of the force-bearing rod 21 can abut against the rib plate 10a. One end of the force-bearing rod 21 and one end of the control rod 22 are movably connected. Specifically, a protruding column 21a is provided at one side end of the force-bearing rod 21, and a hole 22a matching the protruding column 21a is provided at one end of the control rod 22. By inserting the protruding column 21a into the hole 22a, the control rod 22 and the force-bearing rod 21 can rotate relative to each other. A hook 22b is also provided on the control rod 22, and a hook 10c is also provided on the protective cover 10. By hooking the two ends of the return spring 23 on the hooks 22b and 10c respectively, and combining the blocking effect of the rib plate 10a on the force-bearing rod 21, the force-bearing rod 21 and the control rod 22 can be kept in an initial position, in which at least a part of the force-bearing rod 21 protrudes from the developing unit frame, and the protruding part is used to receive external force. A mounting hole 10b is provided on the protective cover 10, and a circular protrusion 22c is provided on the control rod 22 to be inserted into the mounting hole 10b. The control rod 22 can rotate with the joint of the circular protrusion 22c and the mounting hole 10b as a fulcrum. A force-applying portion 22d is provided at the other end of the control rod 22 for applying force to the force receiving member 701. A protruding guide column 11a extending in the longitudinal direction of the developing unit 2 is provided at a position adjacent to the force receiving member 701 on the powder bin body 11 of the developing unit 2, and a sliding groove 701c matching the protruding guide column 11a is provided on the force receiving member 701, and the sliding groove 701c can slide along the protruding guide column 11a. The biasing member 24 provided between the protective cover 10 and the force receiving member 701 is used to force the force receiving member 701 to a biased position in the longitudinal direction of the developing unit. The force applying end 22d of the force receiving member 701 is provided with a force applying surface 22d1, and the force receiving member 701 is provided with a forced pushing surface 701a. When the control lever 22 rotates around the circular protruding column 22c, the force applying surface 22d1 can force the force receiving member 701 to move in the longitudinal direction of the developing unit by forcing the forced pushing surface 701a.

[0059] Combine the following Figure 12 to Figure 13 The process in which the force receiving member 701 engages with the force applying member 105 in the image forming apparatus and receives the separation force in this embodiment is described.

[0060] When the processing box is installed in the imaging device, the biased position of the force receiving member 701 is set in the longitudinal direction of the developing unit so as not to overlap with the force applying member 105 in the imaging device. Therefore, the processing box can be smoothly installed in the imaging device along the left and right direction perpendicular to the longitudinal direction of the developing unit. As the door cover in the imaging device is closed, the force receiving assembly 20 arranged on the processing box can receive the external force in the imaging device. Specifically, the inner wall in the imaging device applies pressure to the force-bearing rod 21, and the force-bearing rod 21 and the control rod 22 begin to be stressed together. Since the force-bearing rod 21 is blocked by the rib 10a, , so the control lever 22 starts to rotate around the circular protruding column 22c, and operates the force receiving member 701 to move toward the force applying member 105 in the imaging device through the force applying surface 22d1. At this time, in the longitudinal direction of the developing unit, at least a part of the force applying member 105 and the force receiving member 701 overlap each other. Therefore, the force receiving member 701 is blocked by the force applying member 105 and stops on one side of the force applying member 105. At this time, the control lever 22 is squeezed by the force from the inner wall of the imaging device and has a certain amount of deformation. When the imaging device pre-rotates and drives the force applying member 105 to move to the left (see Figure 6 ), in the longitudinal direction of the developing unit, the force-applying member 105 will be released from the overlapping state with the force-receiving member 701, and the elastic recovery of the control rod 22 can force the force-receiving member 701 to continue to move a certain distance in the longitudinal direction so that the force-applying member 105 overlaps with the force-receiving member 107 in the left-right direction, and the force-receiving member 107 can receive the separation force of the force-applying member 105 to separate the developing roller from the photosensitive drum. When the box needs to be taken out, as the door cover in the imaging device is opened, the imaging device cancels the force on the force-receiving assembly 20, and under the elastic force of the return spring 23, the control rod 22 rotates in the opposite direction to return to the preset initial position, and the control rod 22 cancels the pressing force on the force-receiving member 701, and the force-receiving member 701 returns to the biased position under the biasing force of the biasing member 24, and the processing box can be taken out smoothly.

[0061] Example 3

[0062] Next, Embodiment 3 of the present invention is received. In this embodiment, the force receiving member 702 is provided in a rotatable and movable structure.

[0063] like Fig.14 and Fig.15 As shown, a mounting hole 11b is provided on the powder bin body 11, and a rotation support portion 702a which can be installed in the mounting hole 11b is provided on the force receiving member 702, and the force receiving member 702 can rotate relative to the powder bin body 11 by inserting the rotation support portion 702a into the mounting hole 11b. An anti-slip member 7021 is also attached to the side of the force receiving member 702 separating the force receiving side, and preferably, the anti-slip member 7021 is configured as a sponge.

[0064] like Fig.16 As shown in (a) to (c), when the process cartridge is initially installed in the imaging device, as the door cover of the imaging device is closed, the force receiving member 702 is initially located on the left side of the force applying member 105 in the imaging device. At this time, the force receiving member 702 may be in a position separated from the force applying member 105, or may be in contact with the force applying member 105 and pressed by the force applying member 105 to rotate upward by a certain angle. As the imaging device is pre-rotated, the force applying member 105 begins to move from right to left. During the process of the force applying member 105 moving from right to left, the force receiving member 702 is forced to rotate upward, and the force applying member 105 passes over the force receiving member 702 after rotating upward, and finally as shown in FIG. Fig.16 As shown in (c), the force applying portion of the force applying member 105 is on the left side of the force receiving member 702, and the force receiving member 702 will rotate downwards to return to the position under the action of its own gravity. Fig.16 (a) in the middle position and in contact with the anti-slip member 7021. In this position, the force receiving member 702 can receive the spacing force of the force applying member 105. When the force applying member 105 is controlled by the imaging device from Fig.16 When the center position (c) moves from left to right, the force member 105 applies force to the force receiving member 702 to separate the developing roller from the photosensitive drum. This arrangement can make it easier for the force receiving member 702 to move upward when pushed by the force member 105 and avoid interference with the force member 105.

[0065] Preferably, in order to enable the force receiving member 702 to more flexibly return to a force receiving position where it can receive the separation force of the force-applying member 105 after rotating upward, an elastic member 26 can be arranged between the force receiving member 702 and the powder bin body 11, and the elastic force of the elastic member 26 can be utilized to assist the force receiving member 702 in rotating downward back to the force receiving position.

[0066] In the above embodiments, the movement mode of the force receiving member can be summarized as follows: the force receiving member has a spacing force receiving position relative to the developing frame, which can contact the force applying member in the imaging device and receive the spacing force that separates the developing roller from the photosensitive drum, and an avoidance position different from the spacing force receiving position. Specifically, in the above-mentioned avoidance position and spacing force receiving position, the force receiving part of the force receiving member that receives the separation force of the force applying member has a different position relative to the developing frame. The different positions can be different positions in the longitudinal direction of the processing box, or in the up and down directions of the processing box, or in both the longitudinal direction and the up and down directions of the processing box. As long as it is satisfied that, at the spacing force receiving position, the force receiving member can contact the force applying member and receive the force that separates the developing roller and the photosensitive drum, and the force applying member is allowed to move freely left and right at the avoidance position. In addition, since there is a driving force receiving member 9 on the driving side of the processing box, when the driving force receiving member 9 receives the driving force in the imaging device and rotates, a large torque will be generated to make the developing roller close to the photosensitive drum. Even if a clutch structure is added between the driving force receiving member 9 and the developing unit in the prior art, a torque will be produced. Therefore, setting the force receiving member 702 on the driving side of the processing box can use a smaller separation force to overcome the above-mentioned torque that makes the developing roller close to the photosensitive drum.

[0067] Compared with the prior art, the force receiving member of the process cartridge in the embodiment of the present invention is freely movable in the up-down direction, but is restricted in the left-right direction. Therefore, when the process cartridge is installed in the imaging device, the force receiving member can be moved to a position where it does not interfere with the force applying member in the imaging device; when the force applying member in the imaging device moves left-right, the force receiving member can cooperate with the force applying member to separate the developing roller and the photosensitive drum of the process cartridge from each other. The technical problem that the force applying member in the imaging device in the prior art is prone to getting stuck when pushing the developing unit to rotate is solved.

[0068] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A process cartridge, detachably mounted in an image forming apparatus including a force applying member, the force applying member being connected to a spring, the process cartridge comprising: Photosensitive drum; Developing roller; A drum frame, used for supporting the photosensitive drum; A developing frame, used for supporting the developing roller; A driving force receiving component, disposed at one longitudinal side end of the process cartridge, for receiving a driving force in the image forming device to drive the developing roller to rotate; a force receiving member, disposed on the same side end of the process cartridge as the driving force receiving member, having a spacing force receiving portion, the spacing force receiving portion being capable of receiving the spacing force provided by the force applying member to space the developing roller from the photosensitive drum; When the process cartridge is installed in the image forming apparatus, the photosensitive drum is positioned on the lower end side of the process cartridge, and the spacing force receiving portion is positioned on the lower end side of the axis of the developing roller; It is characterized in that when the processing box is installed in the imaging device, the force receiving member can be pushed by the force applying member and move upward at least in the direction of gravity; the force receiving member is connected to an elastic member, and the pushing force applied by the elastic member to the force receiving member is smaller than the pushing force applied by the spring to the force applying member.

2. The process cartridge according to claim 1, wherein: The force receiving member has a first side surface, the force applying member abuts against the first side surface to transmit the force that separates the developing roller and the photosensitive drum from each other to the force receiving member, and the first side surface is a vertical surface.

3. A process cartridge according to claim 1, characterized in that: The process cartridge further includes an end cover provided at one side end of the developing frame, and the force receiving member is provided on the end cover.

4. A process cartridge according to claim 1, characterized in that: A first limiting portion and a second limiting portion are formed on the process box, the distance between the first limiting portion and the second limiting portion decreases from top to bottom, and the force receiving member is movably installed between the first limiting portion and the second limiting portion.

5. A process cartridge according to claim 1, characterized in that: An anti-slip component is attached to the force receiving member, and the force applying member applies a force to the force receiving member by contacting the anti-slip component.

6. A process cartridge according to claim 5, characterized in that: The anti-slip component is configured as a sponge.

7. A process cartridge according to claim 1, characterized in that: A first limiting portion and a second limiting portion are formed on the processing box, and the force receiving member is installed between the first limiting portion and the second limiting portion. When the force receiving member receives the force transmitted by the force applying member to separate the developing roller and the photosensitive drum from each other, the first limiting portion and the second limiting portion limit the movement of the force receiving member in the direction of gravity.

8. A process cartridge according to claim 1, characterized in that: During mounting of the process cartridge to the image forming apparatus, the pressure applied by the force receiving member to the urging member is smaller than the urging force applied by the spring to the urging member.

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