Processing box

Abstract

The utility model discloses a processing box which comprises a drum unit and a developing unit, and the developing unit can move between a first position and a second position relative to the drum unit; the first force receiving part is used for receiving the acting force of the first force applying part in the second direction to drive the developing unit to move relative to the drum unit; the second force receiving part is used for receiving the acting force of the second force applying part in a third direction crossed with the first direction and the second direction so as to drive the first force receiving part to move from an avoiding position where the acting force of the first force applying part cannot be received to a working position where the acting force of the first force applying part can be received in the first direction; the driving side end cover comprises a first through hole and a notch part, and the first force receiving piece is located in the range of the notch part when observed in the first direction. The first force receiving piece and the second force receiving piece are arranged, so that the photosensitive drum is in contact with the developing roller when the image forming device develops, and the photosensitive drum is separated from the developing roller when the image forming device stops working.

Description

Technical Field

[0001] The utility model relates to the technical field of image forming devices, in particular to a processing box. Background Art

[0002] Image forming devices use an electrophotographic imaging process to form images on recording materials. Examples of these devices include electrophotographic copiers, electrophotographic printers (e.g., laser beam printers and LED printers), fax machines, and word processors. These devices use a contact development method, where a developing member (developing roller) is in contact with a photosensitive drum to form an image. In such image forming devices, the developing roller is pressed toward the photosensitive drum with a predetermined pressure during the development process and contacts the surface of the photosensitive drum with a predetermined pressure. A process cartridge includes at least one of an electrophotographic photosensitive drum as an image bearing member and a process device (developer bearing member (developing roller)) capable of acting on the drum. The electrophotographic photosensitive drum is mounted on a photosensitive frame, and the process device is mounted on the developing frame. The electrophotographic photosensitive drum and the process device are integrally constructed to form a cartridge that can be removably mounted in the image forming device.

[0003] During operation of an image forming apparatus, a developer roller contacts and presses against a photosensitive drum, transferring the developer on the roller to the surface of the photosensitive drum where a specific electrostatic latent image is formed, completing the development process. However, when the developer roller is in contact with the photosensitive drum during inactivity, the developer carried on the roller is unnecessarily deposited on the drum. This deposited developer can contaminate the recording material and accelerate the degradation of the roller and / or developer due to the prolonged friction between the photosensitive drum and the developer roller. These issues can occur regardless of whether an elastic layer is provided on the surface of the developer roller. Therefore, to address these technical issues, it is necessary to separate the photosensitive drum and the developer roller during inactivity to extend the service life of both. Utility Model Content

[0004] According to one aspect of the present invention, a process cartridge is provided that is detachably mounted in a tray assembly of an image forming apparatus, the image forming apparatus including a first force applying member and a second force applying member, the process cartridge including:

[0005] a drum unit rotatably supporting a photosensitive drum, wherein the axis of the photosensitive drum extends along a first direction, and a photosensitive coupling is provided at one end of the photosensitive drum in the first direction;

[0006] A developing unit rotatably supports a developing roller, wherein the axis of the developing roller extends along a first direction, and the developing roller and the photosensitive drum are arranged relative to each other in a second direction intersecting the first direction; the developing unit is movable relative to the drum unit between a first position and a second position, wherein in the first position, the developing roller contacts the photosensitive drum, and in the second position, the developing roller is at least partially separated from the photosensitive drum; a developing coupling is provided at one end of the developing unit in the first direction;

[0007] a first force receiving member, configured to receive the force of the first force applying member in a second direction to drive the developing unit to move relative to the drum unit;

[0008] a second force receiving member, configured to receive a force applied by the second force applying member in a third direction intersecting the first direction and the second direction, so as to drive the first force receiving member to move in the first direction from a avoidance position unable to receive the force applied by the first force applying member to a working position capable of receiving the force applied by the first force applying member;

[0009] a driving side end cover, disposed at one end of the drum unit in the first direction, comprising a first through hole and a notch portion, wherein the photosensitive coupling is exposed through the first through hole and the developing coupling is exposed through the notch portion;

[0010] Viewed along the first direction, the first force receiving member is located within the range of the notch.

[0011] In some embodiments, the first force receiving member is slidably disposed on the developing unit along a first direction;

[0012] The developing unit is provided with a matching portion, and the first force receiving member is provided with a sliding portion matched with the matching portion;

[0013] One of the sliding portion and the matching portion is a slider, and the other is a sliding groove.

[0014] In some embodiments, the first force receiving member includes a force receiving portion that receives the force of the first force applying member, the force receiving portion includes a contact force receiving portion and a separation force receiving portion, and the first force applying member includes a contact force applying portion and a separation force applying portion;

[0015] The contact force receiving portion receives the contact force of the contact force applying portion to move the developing unit from the second position to the first position, and the separating force receiving portion receives the separating force of the separating force applying portion to move the developing unit from the first position to the second position.

[0016] In some embodiments, the distance the force receiving portion extends in the first direction is less than or equal to the distance the force receiving portion extends in the second direction or the third direction.

[0017] In some embodiments, the distance that the force receiving portion extends in the second direction remains constant along the third direction.

[0018] In some embodiments, the first force receiving member includes an oblique slot portion, the oblique slot portion being inclined relative to the first direction and the third direction;

[0019] The second force receiving member includes a driving portion, which is at least partially embedded in the inclined groove portion. When the second force receiving member receives the force of the second force applying member and moves in the third direction, the first force receiving member is moved from the avoidance position to the working position in the first direction through the sliding cooperation between the driving portion and the inclined groove portion.

[0020] In some embodiments, the second force receiving member is slidably disposed on the developing unit; a guide portion is provided on the developing unit, and a guided portion is provided on the second force receiving member, and the guide portion cooperates with the guided portion to guide the movement of the second force receiving member.

[0021] In some embodiments, one of the guiding portion and the guided portion is a guide groove, and the other is a guide post at least partially embedded in the guide groove;

[0022] The guide groove extends along a third direction.

[0023] In some embodiments, a reset member is further included for resetting the second force receiving member after the force of the second force applying member is removed, and the second force receiving member drives the first force receiving member to move from the working position to the avoidance position during the resetting process.

[0024] In some embodiments, the notch portion extends to the lower end and the rear end of the driving side end cover.

[0025] In some embodiments, the developing unit is provided with a developing cover at one end in the first direction, the driving side end cover is located outside the developing cover and at least partially overlaps with the developing cover, and when the developing unit moves relative to the drum unit, the developing cover moves relative to the driving side end cover.

[0026] In some embodiments, a retaining mechanism is further included, which is provided on the driving side end cover, and a protrusion that cooperates with the retaining mechanism is provided on the developing cover to keep the developing unit in the first position or the second position.

[0027] In some embodiments, the retaining mechanism includes an elastic member and an abutting member, the elastic member abuts between the driving side end cover and the abutting member, and the abutting member abuts against the protrusion under the action of the elastic member.

[0028] In some embodiments, the invention further comprises a connecting portion for movably connecting the developing unit to the drum unit; when viewed along the first direction, the connecting portion does not overlap with the developing coupling.

[0029] In some embodiments, the connecting portion is located outside the range of the notch portion.

[0030] In some embodiments, the connecting portion is located on the front side and / or the upper side of the developing coupling.

[0031] In some embodiments, the image forming apparatus includes a cartridge pressing member and a door cover, wherein the door cover is provided with a raised portion;

[0032] The processing box also includes a lifting mechanism that can abut against the tray component, so that the processing box is in a lifted position where the first force receiving member does not interfere with the protrusion when the processing box is not subjected to the force of the box pressing component.

[0033] In some embodiments, the lifting mechanism includes a contact component and an elastic component, one end of the elastic component abuts against the driving side end cover, and the other end abuts against the contact component, and the abutment component abuts against the tray component under the action of the elastic component, so that the processing box is in the lifted position.

[0034] In some embodiments, the abutment component is capable of sliding along a third direction.

[0035] In some embodiments, a guide rail extending along a third direction is provided on the driving side end cover, and the abutting component is slidably disposed in the guide rail.

[0036] In some embodiments, the device further includes a shielding portion disposed on the developing unit, wherein the shielding portion is capable of protecting the first force receiving member, and the shielding portion moves relative to the drum unit along with the developing unit.

[0037] In some embodiments, the shielding portion is provided at one end of the developing protective cover, and in the first direction, the shielding portion is closer to the driving side end cover than the first force receiving member.

[0038] In some embodiments, when viewed along the first direction, a lower end of the first force receiving member does not protrude beyond a lower end of the shielding portion.

[0039] In some embodiments, when viewed along the first direction, the blocking portion at least partially overlaps with the first force receiving member.

[0040] The beneficial effects of the present invention are as follows: the present invention provides a processing box provided with a first force receiving member and a second force receiving member, which enables the photosensitive drum to contact the developing roller when the image forming device is developing, and separates the photosensitive drum from the developing roller when the device stops working, thereby solving the technical problems in the prior art of long-term contact between the photosensitive drum and the developing roller causing toner to deposit on the photosensitive drum and thus contaminating the photosensitive drum, and long-term friction between the photosensitive drum and the developing roller accelerating the deterioration of the developing roller and / or the developer. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a structural diagram of an image forming device and a process cartridge in some embodiments of the present invention;

[0042] Figure 2 Schematic diagram of the overall structure of the processing box of some embodiments of the present utility model;

[0043] Figure 3 is a side view of a drive end of a process cartridge according to some embodiments of the present invention;

[0044] Figure 4 Schematic diagram of the structure of the drive side end cover of the process cartridge in some embodiments of the present utility model;

[0045] Figure 5 Schematic diagram of the structure of the developing cover of the process cartridge according to some embodiments of the present invention;

[0046] Figure 6 is a cross-sectional view of a driving end of a process cartridge according to some embodiments of the present invention;

[0047] Figure 7 It is a partially exploded schematic diagram of the driving end of the process cartridge according to some embodiments of the present invention;

[0048] Figure 8 A schematic structural diagram of a first force receiving member of a process cartridge according to some embodiments of the present invention;

[0049] Figure 9 It is a structural schematic diagram of a second force receiving member of a process cartridge according to some embodiments of the present utility model;

[0050] Figure 10 A schematic diagram of a process cartridge according to some embodiments of the present invention when mounted on a tray assembly;

[0051] Figure 11 It is a structural schematic diagram of a process cartridge according to some embodiments of the present invention when the first force receiving member is in an avoidance position;

[0052] Figure 12 This is a schematic structural diagram of the first force receiving member of the processing box in some embodiments of the present invention when it is in the working position. DETAILED DESCRIPTION

[0053] The present invention is further described in detail below with reference to the accompanying drawings. It is apparent that the embodiments described are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0054] It should be noted that the terms "first," "second," etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0055] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0056] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0057] In the above description, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0058] The following descriptions of directions are as follows:

[0059] The directions A1 and A2 are the first directions, the direction indicated by A1 is the positive direction of the first direction, and the direction indicated by A2 is the negative direction of the first direction;

[0060] The directions B1 and B2 are the second direction, the direction indicated by B1 is the positive direction of the second direction, and the direction indicated by B2 is the negative direction of the second direction;

[0061] The directions of C1 and C2 are the third direction, the direction pointed by C1 is the positive direction of the third direction, and the direction pointed by C2 is the negative direction of the third direction.

[0062] The first direction, the second direction and the third direction intersect with each other.

[0063] like Figure 1As shown, image forming apparatus 900 forms an image on a recording material using, for example, an electrophotographic imaging process. Image forming apparatus 900 includes, for example, an electrophotographic copier, an electrophotographic printer (such as an LED printer or a laser printer), or an electrophotographic printer-type facsimile machine. One or more process cartridges are detachably mounted within image forming apparatus 900. The process cartridges are mounted within image forming apparatus 900 via a tray assembly 930. Image forming apparatus 900 has an opening. Tray assembly 930 is configured to move from the opening in a substantially horizontal direction between an inner position and an outer position (in directions B1 and B2) when image forming apparatus 900 is mounted on a horizontal surface. Tray assembly 930 has multiple mounting portions, each of which is mounted in a corresponding mounting portion. The multiple process cartridges are arranged along directions B1 and B2. When tray assembly 930 is moved to the inner position, the multiple process cartridges move with tray assembly 930 into image forming apparatus 900. When a process cartridge needs to be replaced, the multiple process cartridges move with the tray assembly 930 to the exterior of image forming apparatus 900 (i.e., the outer position). The tray component 930 is further provided with an abutting portion 931 , which is arranged on the driving side of the tray component 930 . Each mounting portion is correspondingly provided with an abutting portion 931 , and the abutting portion 931 is a bump protruding upward.

[0064] like Figure 1 As shown, the image forming apparatus 900 further includes a rotatable door cover 940 that can close an opening on the image forming apparatus 900. A protrusion 941 is provided on the inner side of the door cover 940, and the protrusion 941 is provided near the driving side (the A1 direction side) of the image forming apparatus 900.

[0065] like Figure 1As shown, the image forming device 900 further includes a first force applying member 910, a second force applying member 920, and a cartridge pressing member 950. The first force applying member 910, the second force applying member 920, and the cartridge pressing member 950 are all disposed on the drive side (the side in the A1 direction) of the image forming device 900, or on the conductive side (the side in the A2 direction) of the image forming device 900, or on both the drive side and the conductive side of the image forming device 900. Optionally, the cartridge pressing member 950 is fixedly mounted on the inner wall of the drive side of the image forming device 900. The first force applying member 910 is movable along the second direction (the B1 and B2 directions) and is used to apply a contact force and a separation force to the process cartridge. The first force applying member 910 is provided with a hollow portion 911 having a groove structure. The B1 sidewall of the hollow portion 911 is a separation force applying portion, and the B2 sidewall of the hollow portion is a contact force applying portion. The second force applying member 920 is configured to be able to move in a third direction (C1 and C2 directions), and the second force applying member 920 is linked to the door cover 940 through a connecting rod mechanism (not shown). When the door cover 940 is opened, the second force applying member 920 moves upward (moves in the C1 direction), and when the door cover 940 is closed, the second force applying member 920 moves downward (moves in the C2 direction).

[0066] The image forming device 900 also includes a driving head (not shown), which is used to transmit the driving force of the image forming device 900 to the processing box to make the processing box work. The driving head includes a developing driving head and a photosensitive driving head. The developing driving head and the photosensitive driving head are both arranged on the driving side of the image forming device 900 (the A1 direction side).

[0067] like Figure 2 and Figure 3 As shown, this embodiment provides a process cartridge detachably mounted on an image forming apparatus 900 , including a developing unit 100 , a drum unit 200 , a driving assembly, a holding mechanism, a first force receiving member 400 , and a second force receiving member 700 .

[0068] like Figure 2 and Figure 3As shown, the developing unit 100 includes a developing frame 110, a developing roller, a powder feed roller, a stirring frame, and a powder discharge blade, while the drum unit 200 includes a drum frame 210, an end cap, a photosensitive drum 220, and a charging roller. The process cartridge is generally rectangular, having a length in a first direction (directions A1 and A2), a width in a second direction (directions B1 and B2), and a height in a third direction (directions C1 and C2). One end of the process cartridge in the A1 direction is a driving end, and one end in the A2 direction is a conductive end. The developing unit 100 and the drum unit 200 are arranged opposite each other in the second direction. The direction from the developing unit 100 toward the drum unit 200 is the B1 direction. The end of the process cartridge along the B1 direction is the front end, the direction from the drum unit 200 toward the developing unit 100 is the B2 direction, and the end along the B2 direction is the rear end. The end of the process cartridge along the C1 direction is the upper end, and the end along the C2 direction is the lower end.

[0069] like Figure 2 As shown, the developing frame 110 forms a powder silo for storing toner. The developing frame 110 is roughly in the shape of an elongated box, and the length direction of the developing frame 110 extends along a first direction (directions A1 and A2). The developing frame 110 is provided with a drive side bearing 120 and a conductive side bearing at both ends of the length direction (directions A1 and A2), respectively. The stirring frame, powder feed roller, and developing roller are rotatably supported on the drive side bearing 120 and the conductive side bearing at both ends of the length direction of the developing frame 110. The stirring frame, powder feed roller, and developing roller can rotate under the action of the driving assembly, and the axial directions of the stirring frame, powder feed roller, and developing roller are all along the length direction (first direction) of the developing frame 110. The toner in the powder silo is stirred by the stirring frame to prevent the toner in the powder silo from clumping. At the same time, the toner is also transported toward the powder feed roller. The powder feed roller transports the toner to the developing roller, where it is adsorbed by the charged developing roller.

[0070] like Figure 2 As shown, the drum frame 210 also has a lengthwise direction, which coincides with the lengthwise direction of the developing frame 110 (both along the A1 and A2 directions). End caps are provided at both ends of the drum frame 210 in the first direction: a drive-side end cap 230 fixedly mounted on one end of the drum frame 210 in the A1 direction, and a conductive-side end cap 240 fixedly mounted on one end of the drum frame 210 in the A2 direction. The photosensitive drum 220 is rotatably supported on the drive-side end cap 230 and the conductive-side end cap 240. Specifically, the photosensitive drum 220 is disposed at the lower end (the C2 side) of the drum frame 210 in the height direction. Toner adsorbed by the developing roller is transferred to the photosensitive drum 220 via a potential difference between the developing roller and the photosensitive drum 220. The toner on the photosensitive drum 220 is then transferred via the transfer belt of the image forming apparatus 900 to form an image on a recording material (e.g., paper). The charging roller is used to charge the surface of the photosensitive drum 220 with uniform electric charge, so that the photosensitive drum 220 can absorb toner.

[0071] like Figure 2 and Figure 3 As shown, the drive assembly includes a photosensitive coupling 310, a developing coupling 320, a developing gear, a powder feeding gear, and a stirring gear. The drive assembly can be disposed at one or both ends of the process cartridge in the first direction (lengthwise direction). In this embodiment, the drive assembly is disposed at the same end of the developing unit 100 in the lengthwise direction, preferably the drive end (the end in the A1 direction). The photosensitive coupling 310 is disposed at one end of the photosensitive drum 220 in the A1 direction and is used to engage with the photosensitive drive head of the image forming device 900 to receive driving force, thereby driving the photosensitive drum 220 to rotate. The developing coupling 320, developing gear, and powder feeding gear are disposed on the outside of the drive-side bearing 120, while the stirring gear is disposed on the inside of the drive-side bearing 120. Specifically, the drive-side bearing 120 is provided with a support hole for supporting the developing coupling 320. The developing coupling 320 is used to engage with the developing drive head of the image forming device 900 and receive driving force. The developing gear is sleeved on the end of the developing roller shaft extending from the drive-side bearing 120, the powder feeding gear is sleeved on the end of the powder feeding roller shaft extending from the drive-side bearing 120, and the stirring gear is sleeved on the end of the stirring frame extending from the developing frame 110. The developing gear, powder feeding gear, and stirring gear directly or indirectly engage with the developing coupling 320, so that the developing coupling 320 transmits the received driving force, thereby driving the developing roller, powder feeding roller, and stirring frame to rotate. In the third direction, the developing coupling 320 is located above the photosensitive coupling 310 (the C1 direction side).

[0072] like Figure 3 As shown, a developer cover 140 is also provided outside the drive-side bearing 120. The developer cover 140 covers at least the developer gear, powder feed gear, stirring gear, and a portion of the developer coupling 320, thereby protecting the drive assembly. Specifically, the developer cover 140 includes a cylindrical portion 142, which protrudes along a side away from the developer frame 110. The cylindrical portion 142 is hollow and extends axially along the length of the developer frame 110. A portion of the developer coupling 320 extends from the interior of the cylindrical portion 142 to the outside of the developer cover 140.

[0073] like Figure 2 and Figure 3 As shown, the conductive side end cap 240 is disposed outside the conductive side bearing, and the drive side end cap 230 is disposed outside the developer protective cover 140. When viewed along the length of the process cartridge, the drive side end cap 230 and the developer protective cover 140 at least partially overlap. The drive side end cap 230 and the conductive side end cap 240 each cover at least a portion of the end portion of the drum frame 210 and the developer frame 110, respectively. Optionally, the drive side end cap 230 is fixedly connected to the end portion of the drum frame 210.

[0074] like Figure 4As shown, a first through hole 231 and a notch portion 232 are provided on the driving side end cover 230. When the driving side end cover 230 is installed at the ends of the developing frame 110 and the drum frame 210, a portion of the photosensitive coupling 310 is exposed through the first through hole 231, and a portion of the developing coupling 320 is exposed through the notch portion 232, so that the coupling engages with the driving head of the image forming device 900 to receive the driving force. The notch portion 232 extends downward and backward from the position corresponding to the developing coupling 320 to the lower end and rear end of the driving side end cover 230, that is, a vacant part is dug out on the driving side end cover 230, so that the projection of the notch portion 232 in the axial direction of the developing roller is larger than the projection of the developing coupling 320 in the axial direction of the developing roller (the projection of the developing coupling 320 is located within the projection range of the notch portion 232), so that most of the developing cover 140 is exposed through the notch portion 232, and the internal structure of the processing box (especially the internal structure of the developing unit 100) can be observed to a certain extent through the notch portion 232. When local maintenance is required, it can be achieved without removing the driving side end cover 230, and maintenance is more convenient.

[0075] During the operation of the image forming device 900, the developing roller and the photosensitive drum 220 need to be in close contact. When the image forming device 900 is not working, the developing roller and the photosensitive drum 220 need to be separated by a certain distance to avoid the developing roller and the photosensitive drum 220 being in contact for a long time, which may cause the photosensitive drum 220 to be contaminated by excess developer attached to the developing roller, or the developing roller to be deformed or the photosensitive drum 220 to be worn.

[0076] Based on this, the drum unit 200 and the developer unit 100 in this embodiment are configured to be capable of relative movement, thereby enabling the developer roller and the photosensitive drum 220 to contact each other when the image forming apparatus 900 is in operation and to separate when not in operation. The process cartridge further includes a connecting portion for movably connecting the developer unit 100 and the drum unit 200, thereby enabling the developer unit 100 to move relative to the drum unit 200 between a first position and a second position. In the first position, the developer roller contacts the photosensitive drum 220, and in the second position, the developer roller separates from the photosensitive drum 220. When viewed along the axial direction (first direction) of the developer roller, the connecting portion does not overlap with the developer coupling 320.

[0077] like Figures 3 to 5As shown, in this embodiment, the process cartridge includes at least one connecting portion. Preferably, there are three connecting portions, which are spaced apart along the circumferential direction (the rotation direction of the developing coupling 320) on the periphery of the developing coupling 320. Specifically, they can be located on the front side and / or the upper side of the developing coupling 320. More or fewer connecting portions can be provided. The connecting portion includes a supporting portion 143 and a guiding portion 233 that cooperate with each other. The supporting portion 143 is provided on the developing cover 140. The supporting portion 143 can be provided on the front side (the side in the B1 direction) and / or the upper side (the side in the C1 direction) of the cylindrical portion 142 of the developing cover 140. The guiding portion 233 is provided on the driving side end cover 230. The position of the guiding portion 233 corresponds to the supporting portion 143, specifically, it is located on the front side and / or the upper side of the notch portion 232. The supporting portion 143 can move within the range of the guiding portion 233. Preferably, the support portion 143 is a cylindrical component formed on the developer protective cover 140, which protrudes along the A1 direction and is preferably cylindrical, but can also be other multi-faceted prism structures; the guide portion 233 is a through hole or a through groove formed on the drive side end cover 230, and the through hole or the through groove is an arc-shaped hole or an arc-shaped groove. During assembly, the support portion 143 is embedded in the guide portion 233, and the range of the guide portion 233 limits the movement range of the support portion 143, that is, it limits the range of swing of the developer unit 100 relative to the drum unit 200.

[0078] like Figure 6As shown, the process cartridge of this embodiment further includes a retaining mechanism for maintaining the developer unit 100 in the first or second position, that is, maintaining contact or separation between the developer roller and the photosensitive drum 220. The retaining mechanism is disposed on the drive-side end cover 230, and the developer protective cover 140 is provided with a protrusion 141 that cooperates with the retaining mechanism to maintain the developer unit 100 in the first or second position. Specifically, the drive-side end cover 230 is provided with a receiving portion. The receiving portion is a through-slot structure extending generally along the second direction, with an opening of the receiving portion located at one end in the direction B2. The retaining mechanism is mounted within the receiving portion. The holding mechanism includes a sleeve 510, an elastic member 520 and an abutting member 530. The sleeve 510 is fixedly installed in the accommodating portion of the drive side end cover 230. The sleeve 510 is hollow inside and has an opening at one end in the B2 direction (i.e., the opening toward the developer cover 140). The elastic member 520 and the abutting member 530 are installed in the sleeve 510. The abutting member 530 is located on the side of the sleeve 510 close to its opening (i.e., the side in the B2 direction). The elastic member 520 Confined between the abutment 530 and the inner bottom wall (inner wall in the direction B1) of the sleeve 510, the force of the elastic member 520 causes at least a portion of the abutment 530 to protrude outside the opening of the sleeve 510. Furthermore, the abutment 530 abuts against a protrusion 141 on the developer cover 140. The protrusion 141 is located near the side of the developer cover 140 facing the direction B1 and is approximately located in the middle of the developer cover 140 in the third direction. The abutment 530 is preferably a spherical member, the surface of which abuts against the protrusion 141 and, under the force of the elastic member 520, presses against the protrusion 141, thereby maintaining the developer unit 100 in the first position or the second position.

[0079] like Figure 6 As shown, before the processing box is installed on the image forming device 900, in order to avoid long-term contact between the developing roller and the photosensitive drum 220, the developing unit 100 is set to the second position, and the developing roller is separated from the photosensitive drum 220, that is, force is applied to make the lower end of the developing unit 100 move in the direction away from the photosensitive drum (B2 direction). During the movement, the protrusion 141 pushes the abutment 530 to overcome the force of the elastic member 520 and retract in the B1 direction. The protrusion 141 moves downward over the abutment 530, that is, the position of the protrusion 141 in the third direction is lowered. After the protrusion 141 passes over, the abutment 530 extends again in the B2 direction under the force of the elastic member 520 and abuts against the upper side of the protrusion 141, so that after the external force is removed, the developing unit 100 remains in the second position under the cooperation of the retaining mechanism and the protrusion 141, and the developing roller and the photosensitive drum 220 remain separated.

[0080] like Figure 6As shown, when the processing box performs the developing work, the developing roller and the photosensitive drum 220 need to be in close contact. The force of the image forming device 900 causes the developing unit 100 to move from the second position to the first position relative to the drum unit 200, that is, the lower end of the developing unit 100 moves toward the direction close to the photosensitive drum (moves in the B1 direction). At the same time, the protrusion 141 moves upward to push the abutment 530 to retract in the B1 direction and pass over the abutment 530. After the protrusion 141 passes over, the abutment 530 extends again under the action of the elastic member 520 and abuts against the lower side of the protrusion 141, so that the developing unit remains in the first position and the developing roller and the photosensitive drum 220 remain in contact.

[0081] The processing box of this embodiment cooperates with the first force applying member 910 and the second force applying member 920 of the image forming device 900 through the first force receiving member 400 and the second force receiving member 700 to realize the movement of the developing unit 100 between the first position and the second position.

[0082] like Figure 3 、 Figure 5 、 Figure 7 and Figure 8As shown, in this embodiment, the first force receiving member 400 is slidably mounted on the developing unit 100. The first force receiving member 400 is slidably mounted at the lower end of the developing unit 100 in the third direction (the end in the C2 direction). When viewed along the first direction, the first force receiving member 400 is located within the range of the notch 232. Specifically, when viewed along the first direction, the arc corresponding to the portion of the cylindrical portion 142 that does not overlap with the projection of the drive-side end cap 230 is a first arc L. The first arc L is the portion of the maximum circumference of the cylindrical portion 142 on the rear side (the side in the B2 direction) and the lower side (the side in the C2 direction). The center of the first arc L overlaps with the axis of the developing coupling 320. The angular range of the central angle corresponding to the first arc L is part of the range of the notch 232. The first force receiving member 400 being located within the range of the notch 232 means that the first force receiving member 400 is located within the angular range of the central angle corresponding to the first arc L. The first force receiving member 400 is movable along the first direction between a working position and a stowed position. Specifically, the first force receiving member 400 includes a force receiving portion 420 , a sliding portion 440 and an inclined groove portion 460 . The sliding portion 440 is used to slideably cooperate with the matching portion 146 provided at the lower end of the developer cover 140 in the third direction. One of the sliding portion 440 and the matching portion 146 is a slider, and the other is a sliding groove that slides with the slider. The sliding groove is arranged to extend along the first direction. The first force receiving member 440 can slide to the avoidance position along the A1 direction, and can also slide to the working position along the A2 direction. When in the avoidance position, the force receiving portion 420 of the first force receiving member 400 and the first force applying member 910 are staggered with each other in the second direction. The force receiving portion 420 does not contact the first force applying member 910 and cannot receive the force applied by the first force applying member 910. When in the working position, the force receiving portion 420 and the first force applying member 910 have an overlapping portion in the second direction. The force receiving portion 420 is in a position where it can receive the force (separation force or contact force) applied by the first force applying member 910, that is, the force receiving portion 420 enters the hollow portion 911 of the first force applying member 910.

[0083] like Figures 10 to 12As shown, the force receiving portion 420 is located at the lower end of the first force receiving member 400 in the third direction and at least partially protrudes from the lower end of the process cartridge. The force receiving portion 420 is a protruding block structure and includes a contact force receiving portion 421 and a separation force receiving portion 422. The contact force receiving portion 421 is a surface of the force receiving portion 420 facing the direction B2, and the separation force receiving portion 422 is a surface of the force receiving portion 420 facing the direction B1. That is, the contact force receiving portion 421 and the separation force receiving portion 422 are arranged opposite to each other in the second direction. The contact force receiving portion 421 abuts the contact force applying portion of the first force applying member 910 to receive the contact force, causing the developing unit 100 to move from the second position to the first position. The separation force receiving portion 422 abuts the separation force applying portion of the first force applying member 910 to receive the separation force, causing the developing unit 100 to move from the first position to the second position. The distance that the force receiving portion 420 extends in the first direction is less than or equal to the distance that it extends in the second direction or the third direction, that is, the width of the force receiving portion 420 in the first direction is less than or equal to its width in the second direction, and the width of the force receiving portion 420 in the first direction is also less than or equal to its width in the third direction. Furthermore, when viewed from the first direction, the distance that the force receiving portion 420 extends in the second direction remains unchanged along the third direction, that is, the width of the force receiving portion 420 in the second direction is the same from top to bottom (along the third direction).

[0084] like Figure 8 As shown, the bevel portion 460 is located on the upper side of the force receiving portion 420, and the bevel portion 460 is inclined relative to the third direction and the first direction. The bevel portion 460 is inclined from the C1, A2 side to the C2, A1 side. The bevel portion 460 is used to cooperate with the second force receiving member 700 to enable the first force receiving member 400 to move in the first direction.

[0085] like Figure 5 、 Figure 7 、 Figure 9 As shown, the second force receiving member 700 is slidably arranged between the driving side bearing 120 and the developing cover 140, the second force receiving member 700 can slide in the third direction, the second force receiving member 700 can receive the force of the second force applying member 920 and move downward (move along the C2 direction), the second force receiving member 700 is a rod-shaped member or a strip-shaped member, and the second force receiving member 700 includes a pressure-receiving portion 720 and a driving portion 740.

[0086] like Figure 9 、 Figure 11 、 Figure 12 As shown, the pressure receiving portion 720 is provided at the upper end of the second force receiving member 700 in the third direction, and at least partially protrudes from the upper ends of the driving side bearing 120 and the developing cover 140 , for receiving the downward force of the second force applying member 920 .

[0087] like Figure 7 and Figure 9 As shown, the driving portion 740 is disposed at the lower end of the second force receiving member 700 . The driving portion 740 is a convex column structure, at least a portion of which is embedded in the inclined groove portion 460 of the first force receiving member 400 .

[0088] Before the processing box is installed in the image forming device 900, the developing unit 100 is in the second position (i.e., the drum roller is separated), and the first force receiving member 400 is in the avoidance position, that is, the first force receiving member 400 is on the side away from the developing frame 110 in the first direction (the A1 direction side), and the driving part 740 is located at a position near the upper end of the inclined groove part 460.

[0089] like Figures 7 to 9 As shown, when the door cover 940 in the image forming apparatus 900 is closed and the second force applying member 920 presses down on the pressure receiving portion 720, the entire second force receiving member 700 moves downward relative to the developing frame 110. The driving portion 740 moves along the inclined groove portion 460 and applies a pushing force thereto, causing the first force receiving member 400 to tend to move in the directions C2 and A2. However, because the movement of the first force receiving member 400 is restricted by the engagement portion 146 and the sliding portion 440, the first force receiving member 400 only moves in the direction A2 to the working position, with no movement in the third direction. The first force receiving member 400 moves in the direction A2, and the force receiving portion 420 enters the hollow portion 911 of the first force applying member 910, reaching the working position where it can receive the force applied by the first force applying member 910.

[0090] like Figure 2 、 Figure 3 、 Figure 7 As shown, the process cartridge further includes a reset member 620 for resetting the second force receiving member 700 after the force of the second force applying member 920 is removed. The reset member 620 is disposed between the pressure receiving portion 720 and the developer protective cover 140. The reset member 620 is preferably a compression spring. When the pressure receiving portion 720 is pressed down by the second force applying member 920, the reset member 620 is compressed and deformed. The second force receiving member 700 drives the first force receiving member 400 to move from the avoidance position to the working position. When the force of the second force applying member 920 is removed, (For example, after opening the door cover 940 of the image forming device 900), the reset member 620 recovers its shape, driving the pressure-receiving portion 720 to reset upward to its initial position, the second force receiving member 700 moves upward, and the driving portion 740 moves along the inclined groove portion 460 and applies a pushing force to the inclined groove portion 460, so that the first force receiving member 400 has a tendency to move in the directions of C1 and A1, but since the first force receiving member 400 is restricted from moving in the third direction, the first force receiving member 400 only moves along the A1 direction to the avoidance position.

[0091] like Figure 5 、 Figure 7 and Figure 9 As shown, a guided portion 750 can also be provided on the second force receiving member 700, and a guiding portion 144 that cooperates with the guided portion 750 can be provided on the developing cover 140. One of the guided portion 750 and the guiding portion 144 is a guide groove, and the other is a guide column. The guide groove can be set to extend along a third direction, and the guide column can be a cylindrical protrusion. When installed, the guide column is inserted into the guide groove, which can guide and limit the movement of the second force receiving member 700.

[0092] The number of the guided portion 750 and the guiding portion 144 can be at least one. In this embodiment, the number of the guided portion 750 and the guiding portion 144 are both set to two, which are respectively arranged at the upper and lower ends of the second force receiving member 700 and the developing cover 140 in the third direction. The guided portion 750 located at the upper end of the second force receiving member 700 is a guide groove, and the guiding portion 144 located at the upper end of the developing cover 140 is a guide column; the guided portion 750 located at the lower end of the second force receiving member 700 is a guide column, and the guiding portion 144 located at the lower end of the developing cover 140 is a guide groove.

[0093] Optionally, the guided portions 750 at the upper and lower ends of the second force receiving member 700 can be set as guide grooves or guide posts, and the guide portions 144 at the upper and lower ends of the developing cover 140 can be set as guide posts or guide grooves, as long as they can play the role of guiding and positioning the movement of the second force receiving member 700.

[0094] Optionally, the guided portion 750 may also be provided at other positions of the second force receiving member 700 except the upper and lower ends, and the guide portion 144 on the developing cover 140 may also be adaptively adjusted in position so that the two can cooperate.

[0095] Since the first force receiving member 400 has no moving component in the third direction, that is, the force receiving portion 420 always protrudes from the lower end of the processing box, when the tray component 930 moves with the processing box between the internal position and the external position, the force receiving portion 420 protruding from the lower end of the processing box may interfere with the protrusion 941 on the inner side of the door cover 940, hindering the movement of the tray component 930 and possibly causing damage to the force receiving portion 420.

[0096] Based on this, the processing box also includes a lifting mechanism for abutting against the abutment 931 on the tray component 930, so that the processing box is in a lifted position when it is not subjected to the force of the box pressing component 950, that is, the driving end of the processing box is lifted. When in the lifted position, the force receiving portion 420 is located on the upper side of the raised portion 941 of the door cover 940 and will not interfere with the raised portion 941. The tray component 930 can be moved out / in smoothly.

[0097] like Figure 3 、 Figure 4、 Figure 10 As shown, in this embodiment, the lifting mechanism is provided on the drum unit 200, specifically, on the drive side end cover 230, and is disposed near the upper end and rear end of the drive side end cover 230. The lifting mechanism includes an abutting member 810 and an elastic member 820. The abutting member 810 is movably provided on the drive side end cover 230 along a third direction. The drive side end cover 230 is provided with a guide rail 234 extending along the third direction. The abutting member 810 is slidably disposed within the guide rail 234 and is a slider structure. The elastic member 820 is disposed within the guide rail 234, with its upper end abutting the C1 end of the guide rail 234 and its lower end abutting the abutting member 810. The elastic expansion and contraction direction of the elastic member 820 is along the third direction. The elastic member 820 is configured to maintain the abutting member 810 in a position abutting the C2 end of the guide rail 234 when not subjected to any other external force. A hook portion may be provided at the C2 direction end of the guide rail 234 to abut against the abutting component 810 , thereby preventing the abutting component 810 from falling off the guide rail 234 .

[0098] Before the processing box is installed to the image forming device 900, the developing unit 100 is in the second position (i.e., the drum roller separation state), and the first force receiving member 400 is in the avoidance position, i.e., the first force receiving member 400 is on the side away from the developing frame 110 in the first direction (the A1 direction side).

[0099] like Figure 10 As shown, when the processing box is installed on the mounting portion of the tray component 930, the abutment component 810 abuts against the abutment portion 931 on the tray component 930. Under the action of the elastic component 820, the driving end of the processing box is raised (in the raised position), and the position of the force receiving portion 420 is also raised, and will not protrude downward from the bottom of the tray component 930. When the tray component 930 moves along the second direction (B2 direction) with the processing box toward the inside of the image forming device 900, the force receiving portion 420 passes from the upper side of the protrusion 941 of the door cover 940, and the two will not interfere with each other.

[0100] like Figure 11 As shown, during the process of installing the processing box into the image forming device 900, when the tray component 930 moves into the internal position with the processing box, the box pressing component 950 presses against the upper end surface of the drive side end cover 230, or presses against other end surfaces of the processing box (such as the surface on the developing frame 110), so that the processing box is pressed down, the elastic component 820 is compressed, and the first force receiving member 400 moves downward with the processing box. At this time, the force receiving portion 420 and the first force applying member 910 have an overlapping part in the third direction, but the first force receiving member 400 is still in the avoidance position, and the force receiving portion 420 and the first force receiving member 400 are still in a staggered state.

[0101] like Figure 12As shown, after the door cover 940 is closed, the door cover 940 and the second force applying member 920 move downward (in the C2 direction), pressing the pressure portion 720 of the second force receiving member 700. This causes the entire second force receiving member 700 to move downward relative to the developing frame 110. The driving portion 740 moves along the inclined groove portion 460 and applies a pushing force to the inclined groove portion 460, causing the first force receiving member 400 to move in the A2 direction. The force receiving portion 420 enters the hollow portion 911 of the first force applying member 910, i.e., reaches a working position capable of receiving the force applied by the first force applying member 910. Simultaneously, the transfer belt in the image forming apparatus 900 rises until it contacts the photosensitive drum 220, the developing drive head engages with the developing coupling 320, and the photosensitive drive head engages with the photosensitive coupling 310, placing the process cartridge in a developing state.

[0102] When the image forming device 900 performs the developing operation, the first force applying member 910 moves in the B1 direction, contacts the force receiving portion 420 of the first force receiving member 400 and applies a contact force in the B1 direction to it. The contact force also acts on the entire developing unit 100, causing the developing unit 100 to move from the second position to the first position relative to the drum unit 200, and the developing roller contacts the photosensitive drum 220. During the movement of the developing unit 100, the protrusion 141 moves upward to push the abutment 530 to retract in the B1 direction and pass over the abutment 530. After the protrusion 141 passes over, the abutment 530 extends again in the B2 direction under the action of the elastic member 520, and abuts on the lower side of the protrusion 141, so that the developing unit 100 remains in the first position and the developing roller and the photosensitive drum 220 maintain a stable contact state.

[0103] When the image forming device 900 finishes the developing work, the first force applying member 910 moves in the B2 direction, applies a separation force in the B2 direction to the force receiving portion 420, so that the developing unit 100 moves from the first position to the second position relative to the drum unit 200, and the developing roller is separated from the photosensitive drum 220. At the same time, the abutment member 530 of the retaining mechanism moves from the lower side to the upper side relative to the protrusion 141, so that the developing unit 100 remains in the second position, and the developing roller and the photosensitive drum 220 remain in a stable separation state.

[0104] When it is necessary to take out / replace the processing cartridge, the door cover 940 is opened, and the second force applying member 920 is linked to move upward. The second force applying member 920 no longer presses the second force receiving member 700. The second force receiving member 700 moves upward and is reset to its initial position under the action of the reset member 620. The second force receiving member 700 moves upward, and the driving portion 740 moves along the inclined groove portion 460 and applies a pushing force to the inclined groove portion 460, so that the first force receiving member 400 moves along the A1 direction to the avoidance position, and then the tray component 930 is pulled out along the B1 direction. The force receiving portion 420 will not contact the first force applying member 910. Interference occurs; in the process of the tray component 930 moving out of the image forming device 900 along the B1 direction, the processing box will be out of contact with the box pressing component 950, that is, the box pressing component 950 no longer presses the processing box, and the elastic component 820 of the lifting mechanism is deformed and restored. The processing box returns to the raised position (that is, the driving end of the processing box is lifted) under the action of the elastic component 820, and the force receiving portion 420 is located on the upper side of the protrusion 941 of the door cover 940 and will not interfere with the protrusion 941. The tray component 930 is smoothly pulled out of the image forming device 900, and the processing box can be taken out / replaced.

[0105] like Figure 2 and Figure 7 As shown, the process cartridge further includes a shielding portion 145, which is disposed in the developing unit 100 and is used to protect the first force receiving member 400, particularly the force receiving portion 420. The shielding portion 145 moves with the developing unit 100 relative to the drum unit 200. Specifically, the shielding portion 145 is a baffle structure and is disposed at the lower end (the end in the C2 direction) of the developing cover 140. When viewed in the first direction, the lower end of the force receiving portion 420 does not protrude beyond the lower end of the shielding portion 145. Preferably, a certain distance is provided between the lower end of the first force receiving member and the lower end of the shielding portion 145. When the process cartridge is placed on a table with its lower end facing the table, the shielding portion 145 contacts the table before the first force receiving member 400. The shielding portion 145 protects the first force receiving member 400, and accordingly, the force receiving portion 420 is also protected. Optionally, the lower end of the shielding portion 145 is flush with the lower end of the first force receiving member 400. In the first direction, the first force receiving member 400 and the shielding portion 145 have overlapping portions. Specifically, the shielding portion 145 at least overlaps with the force receiving portion 420, thereby providing protection for the force receiving portion 420. The shielding portion 145 may also overlap with most or all of the first force receiving member 400. The size of the shielding portion 145 can be adaptively adjusted, and this is not limited in this embodiment. In the first direction, the shielding portion 145 is closer to the drive-side end cover 220 than the first force receiving member 400, that is, the shielding portion 145 is located on the A1 side (outer side) of the first force receiving member 400. When the process cartridge is subjected to a collision along the first direction, the shielding portion 145 can provide effective protection for the first force receiving member 400.

[0106] In this embodiment, the shielding portion 145 is made entirely of hard material, or entirely of elastic material, or partially of hard material and partially of elastic material; further, the shielding portion 145 can be formed integrally with the developer shield 140, or can be formed separately from the developer shield 140. For example, the portion of the shielding portion 145 made of hard material is fixedly connected to the developer shield 140, and an elastic member such as sponge or rubber is attached below the portion made of hard material. In this case, the portion made of hard material can be regarded as a part of the developer shield 140, or the above-mentioned elastic member is directly arranged below the developer shield 140 (which can be fixed by gluing, snapping, etc.). Preferably, the elastic member is glued to the lower end of the portion made of hard material or directly attached to the developer shield 140.

[0107] In some other embodiments, the shielding portion 145 is movably combined with the developer cover 140, and the movability can be at least any one of rotation, sliding, translation, etc. For example, the shielding portion 145 is configured to be retractable relative to the developer cover 140. When the shielding portion 145 is not subjected to an action force, the shielding portion 145 is in a downwardly extending position, so that the lower end of the first force receiving member 400 does not protrude beyond the lower end of the shielding portion 145. When the shielding portion 145 is subjected to an action force, the shielding portion 145 moves upward to a position where its lower end is higher than or flush with the lower end of the first force receiving member 400. This can reduce the interference between the shielding portion 145 and the image forming device 900 during the installation / disassembly of the processing box. The force that forces the shielding portion 145 to move can be applied by the user, for example, by manually moving the shielding portion 145; a linkage structure can also be provided to apply force to the shielding portion 145, for example, by linking the shielding portion 145 with a handle, so that when the user grasps the handle and lifts the processing box for installation or removal, the shielding portion 145 moves in linkage.

[0108] In this embodiment, the shielding portion 145 is further outward and lower than the first force receiving member 400, which can effectively protect the first force receiving member 400, so that the first force receiving member 400 can be protected by the shielding portion 145 before the processing box is installed in the image forming device 900 or during transportation, avoiding collision, wear and other situations of the first force receiving member 400.

[0109] The above descriptions are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A process cartridge detachably mounted in a tray assembly of an image forming apparatus, the image forming apparatus comprising a first force applying member and a second force applying member, wherein: The processing box includes: a drum unit rotatably supporting a photosensitive drum, wherein the axis of the photosensitive drum extends along a first direction, and a photosensitive coupling is provided at one end of the photosensitive drum in the first direction; A developing unit rotatably supports a developing roller, wherein the axis of the developing roller extends along a first direction, and the developing roller and the photosensitive drum are arranged relative to each other in a second direction intersecting the first direction; the developing unit is movable relative to the drum unit between a first position and a second position, wherein in the first position, the developing roller contacts the photosensitive drum, and in the second position, the developing roller is at least partially separated from the photosensitive drum; a developing coupling is provided at one end of the developing unit in the first direction; a first force receiving member, configured to receive the force of the first force applying member in a second direction to drive the developing unit to move relative to the drum unit; a second force receiving member, configured to receive a force applied by the second force applying member in a third direction intersecting the first direction and the second direction, so as to drive the first force receiving member to move in the first direction from a avoidance position unable to receive the force applied by the first force applying member to a working position capable of receiving the force applied by the first force applying member; a driving side end cover, disposed at one end of the drum unit in the first direction, comprising a first through hole and a notch portion, wherein the photosensitive coupling is exposed through the first through hole and the developing coupling is exposed through the notch portion; Viewed along the first direction, the first force receiving member is located within the range of the notch.

2. The process cartridge according to claim 1, wherein The first force receiving member is slidably disposed on the developing unit along a first direction; The developing unit is provided with a matching portion, and the first force receiving member is provided with a sliding portion matched with the matching portion; One of the sliding portion and the matching portion is a slider, and the other is a sliding groove.

3. The process cartridge according to claim 1, wherein The first force receiving member includes a force receiving portion that receives the force of the first force applying member, the force receiving portion includes a contact force receiving portion and a separation force receiving portion, and the first force applying member includes a contact force applying portion and a separation force applying portion; The contact force receiving portion receives the contact force of the contact force applying portion to move the developing unit from the second position to the first position, and the separating force receiving portion receives the separating force of the separating force applying portion to move the developing unit from the first position to the second position.

4. The process cartridge according to claim 3, wherein: The distance that the force receiving portion extends in the first direction is less than or equal to the distance that the force receiving portion extends in the second direction or the third direction.

5. The process cartridge according to claim 3, wherein: A distance that the force receiving portion extends in the second direction remains constant along the third direction.

6. The process cartridge according to claim 1, wherein The first force receiving member includes an oblique groove portion, the oblique groove portion being inclined relative to the first direction and the third direction; The second force receiving member includes a driving portion, which is at least partially embedded in the inclined groove portion. When the second force receiving member receives the force of the second force applying member and moves in the third direction, the first force receiving member is moved from the avoidance position to the working position in the first direction through the sliding cooperation between the driving portion and the inclined groove portion.

7. The process cartridge according to claim 6, wherein: The second force receiving member is slidably disposed on the developing unit; a guide portion is provided on the developing unit, and a guided portion is provided on the second force receiving member. The guide portion cooperates with the guided portion to guide the movement of the second force receiving member.

8. The process cartridge according to claim 7, wherein: One of the guiding portion and the guided portion is a guide groove, and the other is a guide post at least partially embedded in the guide groove; The guide groove extends along a third direction.

9. The process cartridge according to claim 6, wherein: It also includes a reset member for resetting the second force receiving member after the force of the second force applying member is removed, and during the resetting process of the second force receiving member, the first force receiving member is driven to move from the working position to the avoidance position.

10. The process cartridge according to claim 1, wherein The notch portion extends to the lower end and the rear end of the driving side end cover.

11. The process cartridge according to claim 1, wherein The developing unit is provided with a developing cover at one end in the first direction, the driving side end cover is located outside the developing cover and at least partially overlaps with the developing cover, and when the developing unit moves relative to the drum unit, the developing cover moves relative to the driving side end cover.

12. The process cartridge according to claim 11, wherein It also includes a holding mechanism, which is arranged on the driving side end cover. The developing protective cover is provided with a protrusion that cooperates with the holding mechanism to keep the developing unit in the first position or the second position.

13. The process cartridge according to claim 12, wherein: The holding mechanism includes an elastic member and a contact member. The elastic member is in contact between the driving side end cover and the contact member. The contact member is in contact with the protrusion under the action of the elastic member.

14. The process cartridge according to claim 1, wherein It also includes a connecting portion for movably connecting the developing unit and the drum unit; when viewed along the first direction, the connecting portion does not overlap with the developing coupling.

15. The process cartridge according to claim 14, wherein The connecting portion is located outside the range of the notch portion.

16. The process cartridge according to claim 14, wherein The connection portion is located on the front side and / or the upper side of the developing coupling.

17. The process cartridge according to claim 1, wherein The image forming device includes a box pressing component and a door cover, and the door cover is provided with a protrusion; The processing box also includes a lifting mechanism that can abut against the tray component, so that the processing box is in a lifted position where the first force receiving member does not interfere with the protrusion when the processing box is not subjected to the force of the box pressing component.

18. The process cartridge according to claim 17, wherein The lifting mechanism includes a contact component and an elastic component, one end of the elastic component contacts the driving side end cover, and the other end contacts the contact component, and the contact component contacts the tray component under the action of the elastic component, so that the processing box is in the raised position.

19. The process cartridge according to claim 18, wherein The abutting component is slidable along a third direction.

20. The process cartridge according to claim 19, wherein The driving side end cover is provided with a guide rail extending along the third direction, and the abutting component is slidably arranged in the guide rail.

21. The process cartridge according to claim 11, wherein The invention further includes a shielding portion provided on the developing unit, wherein the shielding portion can protect the first force receiving member, and the shielding portion moves relative to the drum unit along with the developing unit.

22. The process cartridge according to claim 21, wherein The shielding portion is provided at one end of the developing cover, and in a first direction, the shielding portion is closer to the driving side end cover than the first force receiving member.

23. The process cartridge according to claim 21, wherein When viewed along the first direction, a lower end of the first force receiving member does not protrude beyond a lower end of the shielding portion.

24. The process cartridge according to claim 21, wherein When viewed along the first direction, the shielding portion at least partially overlaps with the first force receiving member.

Images