Processing box

Abstract

The invention discloses a process cartridge, 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 separating force receiving part is movably arranged on the developing unit and can move between a working position and an avoiding position, the separating force receiving part comprises a separating force receiving part used for receiving the separating force of the separating force applying part, and the separating force receiving part can receive the separating force of the separating force applying part to enable the developing unit to move from the first position to the second position; the shielding part is arranged on the developing unit, the separating force receiving part is completely located in the shielding range of the shielding part when observed along the rotating axis of the photosensitive drum, and the shielding part moves relative to the drum unit along with the developing unit. After the technical scheme is adopted, the separating force receiving piece for receiving the separating force in the processing box can be effectively protected, so that the developing roller and the photosensitive drum can be smoothly separated, and the service life of the processing box is prolonged.

Description

Technical Field

[0001] This invention relates to the field of electronic imaging equipment technology, and more particularly to a processing box. Background Technology

[0002] like Figure 1 As shown, the processing cartridge P for an electronic imaging device includes a developing unit 4 and a drum unit 5 connected together. The developing unit 4 is provided with a developing roller 41 and a separation force receiver 44, and the drum unit 5 is provided with a photosensitive drum 1. When the processing cartridge P needs to be developed, the developing roller 41 and the photosensitive drum 1 are in contact with each other. When the processing cartridge P does not need to be developed, the separation force receiver 44 receives a separation force from the electronic imaging device, causing the developing roller 41 and the photosensitive drum 1 to separate from each other. This can prevent irreversible deformation of the surface of the developing roller 41 or contamination of the surface of the photosensitive drum 1 by developer (such as toner) due to long-term contact between the developing roller 41 and the photosensitive drum 1, thereby improving the service life of the processing cartridge P.

[0003] The existing processing cartridge P is configured such that the photosensitive drum 1 and the developing roller 41 are in contact with each other, and the rotation axis of the photosensitive drum 1 is located below the rotation axis of the developing roller 41. When viewed along the rotation axis of the photosensitive drum 1, the surface of the separation force receiver 44 used to receive the separation force is located below the end cap. In other words, the surface of the separation force receiver 44 used to receive the separation force is exposed and not blocked by the end cap.

[0004] When the processing cartridge P has not yet been installed in the electronic imaging device, for example, when the processing cartridge P is placed on a table or during transportation, the separation force receiver 44 exposed outside the end cover may be worn or damaged, which may result in the processing cartridge P being unable to receive the separation force of the electronic imaging device after installation, thus causing the developing roller 41 and the photosensitive drum 1 to be unable to separate. Summary of the Invention

[0005] According to one aspect of the invention, a processing cartridge is provided, detachably mounted in an electronic imaging device, the electronic imaging device including a separation force applicator, comprising:

[0006] The drum unit rotatably supports the photosensitive drum;

[0007] The developing unit is rotatably supported by a developing roller. The developing unit is movable relative to the drum unit between a first position and a second position. In the first position, the developing roller is in contact with the photosensitive drum, and in the second position, the developing roller is separated from the photosensitive drum.

[0008] A separation force receiving member movably provided to the developing unit and capable of moving between a working position and a retreat position, the separation force receiving member including a separation force receiving portion for receiving the separation force of the separation force applying member, the separation force receiving member being capable of retreating from the separation force applying member in the retreat position, the separation force receiving portion being capable of receiving the separation force of the separation force applying member to move the developing unit from the first position to the second position in the working position;

[0009] A shielding portion provided to the developing unit, the separation force receiving portion being entirely located within a shielding range of the shielding portion as viewed along the rotation axis of the photosensitive drum, the shielding portion moving with the developing unit relative to the drum unit.

[0010] In some embodiments, one end of the developing unit in the length direction thereof is provided with a developing cover, and the shielding portion is provided at one end of the developing cover.

[0011] In some embodiments, when the developing unit is in the first position and the rotation axis of the photosensitive drum is located on the lower side of the rotation axis of the developing roller, a lower end of the separation force receiving member does not protrude beyond a lower end of the shielding portion as viewed along the rotation axis of the photosensitive drum.

[0012] In some embodiments, the separation force receiving member is movably provided to the developing cover.

[0013] In some embodiments, one end of the drum unit in the length direction thereof is provided with an end cover, and the end cover is at least partially located outside the developing cover.

[0014] The shielding portion is closer to the end cover than the separation force receiving member.

[0015] In some embodiments, the developing cover is provided with an extension portion extending from an end surface of the developing cover to the lower side of the end cover in the length direction of the developing unit, and the shielding portion is provided at one end of the extension portion away from the developing cover.

[0016] According to an aspect of the present application, there is provided another process cartridge detachably mountable in an electronic image forming apparatus including a separation force applying member, comprising:

[0017] A drum unit rotatably supporting a photosensitive drum;

[0018] A developing unit rotatably supporting a developing roller, the developing unit being capable of moving relative to the drum unit between a first position in which the developing roller is in contact with the photosensitive drum and a second position in which the developing roller is separated from the photosensitive drum;

[0019] The separating force receiving member is movably arranged in the developing unit and is capable of moving between a retreat position and a working position, the separating force receiving member comprises a separating force receiving part and a shielding part, in the retreat position, the separating force receiving member is capable of retreating from the separating force applying member, in the working position, the separating force receiving part is capable of receiving the separating force of the separating force applying member to move the developing unit from the first position to the second position, and the separating force receiving part is entirely located in the shielding range of the shielding part when viewed along the rotation axis of the photosensitive drum.

[0020] In some embodiments, after the processing cartridge is installed in place in the electronic image forming device, the separating force receiving member moves from the working position to the retreat position under the pushing force of the separating force applying member when the separating force applying member moves.

[0021] In some embodiments, the shielding part is located at one side of the separating force receiving part, and the shielding part is configured to block the movement of the separating force receiving member to the retreat position when the separating force receiving part receives the separating force.

[0022] In some embodiments, when the separating force receiving part abuts against the separating force applying member to receive the separating force, the shielding part abuts against the separating force applying member to block the movement of the separating force receiving member to the retreat position.

[0023] In some embodiments, the separating force receiving part and the shielding part are perpendicular to each other.

[0024] In some embodiments, the separating force receiving part is a slope.

[0025] In some embodiments, the separating force receiving part is obliquely arranged relative to the shielding part.

[0026] In some embodiments, when the separating force receiving part abuts against the separating force applying member, the separating force receiving part receives the separating force and an acting force intersecting with the separating force, and the acting force keeps the separating force receiving member in the working position.

[0027] In some embodiments, when the developing unit is in the first position and the rotation axis of the photosensitive drum is located below the rotation axis of the developing roller, the lower end of the separating force receiving part does not protrude from the lower end of the shielding part when viewed along the rotation axis of the photosensitive drum.

[0028] The present application has the following beneficial effects: after the above technical solution is adopted, the separating force receiving member for receiving the separating force in the processing cartridge can be effectively protected, so that the developing roller and the photosensitive drum can be smoothly separated, thereby improving the service life of the processing cartridge. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1A cross-sectional view of a conventional process cartridge;

[0030] Figure 2 A structure diagram of a process cartridge according to an embodiment of the present application from one angle;

[0031] Figure 3 A structure diagram of a process cartridge according to an embodiment of the present application from another angle;

[0032] Figure 4 A partial structure diagram of a driving end of a process cartridge according to an embodiment of the present application;

[0033] Figure 5 A structure diagram of a driving side end cover and a chip according to an embodiment of the present application;

[0034] Figure 6 A structure diagram of a process cartridge according to an embodiment of the present application from still another angle;

[0035] Figure 7 A cooperation diagram of a developing guard and a separation force receiving member of a process cartridge according to an embodiment of the present application Figure 1 ;

[0036] Figure 8 A cooperation diagram of a developing guard and a separation force receiving member of a process cartridge according to an embodiment of the present application Figure 2 ;

[0037] Figure 9 A structure diagram of a developing guard of a process cartridge according to an embodiment of the present application;

[0038] Figure 10 A structure diagram of a separation force receiving member of a process cartridge according to an embodiment of the present application;

[0039] Figure 11 A partial structure diagram of a driving end of a process cartridge according to an embodiment of the present application;

[0040] Figure 12 A partial structure diagram of a driving end of a process cartridge according to a modified example of an embodiment of the present application from one angle;

[0041] Figure 13 A partial structure diagram of a driving end of a process cartridge according to a modified example of an embodiment of the present application from another angle;

[0042] Figure 14 A partial structure diagram of a driving end of a process cartridge according to an embodiment of the present application from one angle;

[0043] Figure 15 A partial structure diagram of a driving end of a process cartridge according to an embodiment of the present application from another angle;

[0044] Figure 16(a) and (b) are structural schematic diagrams of the separating force receiving member of the process cartridge according to Embodiment 2 of the present invention;

[0045] Figure 17 (a) and (b) are structural schematic diagrams of the process cartridge according to Embodiment 2 of the present invention;

[0046] Figure 18 (a) and (b) are structural schematic diagrams of the process cartridge according to Embodiment 2 of the present invention;

[0047] Figure 19 (a) and (b) are structural schematic diagrams of the separating force receiving member of the process cartridge according to Embodiment 2 of the present invention. DETAILED DESCRIPTION

[0048] The application will be further described below in details with reference to the drawings, obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of the present application.

[0049] It should be noted that the terms "first", "second" and the like are used only for the purpose of description, and should not be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0050] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection or communication with each other; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0051] In the present application, unless otherwise specifically defined and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0052] In the above description, the description with reference to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. Descriptive expressions of the above terms in the specification do not necessarily refer to the same embodiment or example. Also, the specific feature, structure, material or characteristic described can be combined in any appropriate manner in one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples, without contradiction.

[0053] The following description of the orientation is defined as follows in the specification:

[0054] A1 and A2 directions are 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;

[0055] B1 and B2 directions are second directions, 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;

[0056] C1 and C2 directions are third directions, the direction indicated by C1 is the positive direction of the third direction, and the direction indicated by C2 is the negative direction of the third direction.

[0057] The first direction, the second direction and the third direction intersect each other.

[0058] An electronic imaging device forms an image on a recording material using, for example, an electrophotographic imaging process. The electronic imaging device includes, for example, an electrophotographic copier, an electrophotographic printer (LED printer, laser printer, etc.), a facsimile machine of an electrophotographic printer type, and the like. A process cartridge is detachably mounted to the electronic imaging device, and the process cartridge contains a photosensitive drum 240, a developing roller 140 for developing an electrostatic latent image formed on the photosensitive drum 240, and the like. The electronic imaging device includes a drive head for transmitting a driving force of the electronic imaging device to the process cartridge to operate the process cartridge, and a separation force applying member for applying a separation force to the process cartridge to separate the developing roller 140 from the photosensitive drum 240.

[0059] Embodiment one

[0060] As Figure 2 and Figure 3As shown, this embodiment provides a processing cartridge, including a developing unit 100, a drum unit 200, a driving assembly, a chip 700, and a separation force receiver 400. The developing unit 100 includes a developing frame 110, a developing roller 140, a powder feeding roller, and a powder discharging blade. The drum unit 200 includes a photosensitive frame 210, a photosensitive drum 240, a charging roller, and a cleaning blade. The processing box is roughly rectangular in shape, with a length in the first direction (A1 and A2 directions), a width in the second direction (B1 and B2 directions), and a height in the third direction (C1 and C2 directions). One end of the processing box in the A1 direction is the driving end, and the other end in the A2 direction is the 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 processing box along the B1 direction is the front end. The direction from the drum unit 200 toward the developing unit 100 is the B2 direction. The end along the B2 direction is the rear end. The end of the processing box along the C1 direction is the upper end, and the end along the C2 direction is the lower end.

[0061] like Figure 2 and Figure 3 As shown, the developing frame 110 forms a toner storage hopper. The developing frame 110 is approximately in the shape of a long, rectangular box. The length of the developing frame 110 extends along a first direction (A1 and A2 directions). At both ends of the developing frame 110 along the length direction (A1 and A2 directions), there are drive-side supports 120 and conductive-side supports, respectively. The toner feed roller and the developing roller 140 are rotatably supported on the drive-side supports 120 and conductive-side supports at both ends of the developing frame 110 along the length direction. The toner feed roller and the developing roller 140 can rotate under the action of the driving assembly, and their axial directions are both along the length direction (first direction) of the developing frame 110. The toner feed roller contacts the developing roller 140 and can transport the toner in the toner hopper to the developing roller 140, where it is attracted by the charged developing roller 140.

[0062] like Figure 2 and Figure 3As shown, the photosensitive frame 210 encloses a waste powder bin for collecting waste powder, and has a length direction which is consistent with the length direction of the developing frame 110 (both along the A1 and A2 directions). The photosensitive frame 210 is provided with end covers at both ends in the first direction, namely, a driving side end cover 220 fixedly arranged at one end of the photosensitive frame 210 in the A1 direction and a conductive side end cover 230 fixedly arranged at one end of the photosensitive frame 210 in the A2 direction. The photosensitive drum 240 is rotatably supported on the driving side end cover 220 and the conductive side end cover 230, and specifically, the photosensitive drum 240 is arranged at the lower end side (the side of the C2 direction) of the photosensitive frame 210 in the height direction. The toner adsorbed by the developing roller 140 is transferred to the photosensitive drum 240 through the potential difference between the developing roller 140 and the photosensitive drum 240, and the toner on the photosensitive drum 240 is transferred to a recording material (such as paper) through a transfer belt of the electronic imaging device to form an image on the recording material. After the transfer, the cleaning blade is in linear contact with the photosensitive drum 240 to clean the surface of the photosensitive drum 240 of the toner which has not been completely transferred, i.e., waste powder, and the cleaned waste powder is stored in the waste powder bin. The charging roller is used to charge the surface of the photosensitive drum 240 with uniform charges, so that the photosensitive drum 240 can adsorb toner.

[0063] As Figures 2 to 4As shown, the drive assembly includes a photosensitive coupling 310, a developing coupling 320, a developing roller gear 330 and a powder feeding roller gear 340, which can be arranged at one or both ends of the process cartridge in the first direction (length direction). In this embodiment, the drive assembly is arranged at the same end of the process cartridge in the length direction, preferably the driving end (A1 direction end). The photosensitive coupling 310 is arranged at one end of the photosensitive drum 240 in the A1 direction, for engaging with the photosensitive driving head of the electronic imaging device to receive driving force and drive the photosensitive drum 240 to rotate. The developing coupling 320, the developing roller gear 330 and the powder feeding roller gear 340 are arranged outside the drive side bracket 120. Specifically, the drive side bracket 120 is provided with a support hole for supporting the developing coupling 320, which is used for engaging with the developing driving head of the electronic imaging device and receiving driving force. The developing coupling 320 is located at a position substantially in the middle of the developing unit 100 in the third direction. The developing roller gear 330 is sleeved on the end of the shaft of the developing roller 140 extending out of the drive side bracket 120, and the powder feeding roller gear 340 is sleeved on the end of the shaft of the powder feeding roller extending out of the drive side bracket 120. The developing roller gear 330 and the powder feeding roller gear 340 directly or indirectly engage with the developing coupling 320, so that the developing coupling 320 transmits the received driving force to drive the developing roller 140 and the powder feeding roller to rotate. In the third direction, the developing coupling 320 is located on the upper side (C1 direction side) of the photosensitive coupling 310. The rotation axis of the developing roller gear 330 is also located on the upper side (C1 direction side) of the photosensitive coupling 310, i.e. the rotation axis of the photosensitive drum 240 is located on the lower side (C2 direction side) of the rotation axis of the developing roller 140.

[0064] As shown, Figures 2 to 4 The drive side bracket 120 is further provided with a developing cover 130 outside, which covers the developing roller gear 330, the powder feeding roller gear 340 and part of the developing coupling 320, and can protect the drive assembly. Specifically, the developing cover 130 is provided with a cylindrical portion 131 protruding away from the developing frame 110, and the developing cover 130 is hollow inside to form a developing shaft hole 132, the axis of which extends in the first direction. Part of the developing coupling 320 passes through the developing shaft hole 132 to extend out of the developing cover 130.

[0065] As shown, Figures 2 to 4 The conductive side end cover 230 is arranged outside the conductive side bracket, and the drive side end cover 220 is arranged outside the developing cover 130. When viewed in the length direction of the process cartridge, the drive side end cover 220 at least partially overlaps the developing cover 130. The drive side end cover 220 and the conductive side end cover 230 cover at least part of the end of the photosensitive frame 210 and the developing frame 110, respectively. The drive side end cover 220 is fixedly connected with the end of the photosensitive frame 210.

[0066] like Figure 4 As shown, in this embodiment, the drive-side end cover 220 is provided with a photosensitive shaft hole 221 and a notch 222. When the drive-side end cover 220 is installed at the ends of the developing frame 110 and the photosensitive frame 210, a portion of the photosensitive coupling 310 is exposed through the photosensitive shaft hole 221, and a portion of the developing coupling 320 is exposed through the notch 222, so that the coupling can engage with the drive head of the electronic imaging device to receive driving force. The notch 222 extends upward and backward from the position corresponding to the developing coupling 320 to the upper and rear ends of the drive-side end cover 220, that is, a gap is cut out in the drive-side end cover 220, and most of the developing cover 130 is exposed through the notch 222. 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 222. In the case of partial maintenance, it can be achieved without removing the drive-side end cover 220, making maintenance more convenient.

[0067] like Figures 3 to 5As shown, in the embodiment, the chip 700 includes a storage part (not shown) and an electrical contact part 710, the storage part is electrically connected with the electrical contact part 710, and the storage part and the electrical contact part 710 are jointly arranged on the same substrate, i.e., the storage part and the electrical contact part 710 are integrally arranged. The storage part can include a wafer and a battery arranged on the substrate, and the storage part is configured to store information related to the processing cartridge. The electrical contact part 710 is arranged on one surface of the substrate, and the number of the electrical contact part 710 is two. The driving-side end cover 220 is provided with a chip mounting part 225, the chip mounting part 225 is located at the upper end surface (the end surface in the C1 direction) of the driving-side end cover 220, and the chip mounting part 225 includes a supporting part 2251 and a limiting part, the supporting part 2251 is used for supporting the chip 700, the supporting part 2251 is in a boss-shaped structure protruding from the upper end surface of the driving-side end cover 220, and the chip 700 can be fixed on and supported by the supporting part 2251 by means of pasting, clamping, welding or the like. When the chip 700 is mounted into the chip mounting part 225 of the processing cartridge, the electrical contact part 710 is arranged to face away from the processing cartridge (i.e., the electrical contact part 710 faces the C1 direction). The limiting part is located at the periphery of the chip 700 and is used for limiting the movement of the chip 700 in the first direction and the second direction. In the embodiment, the limiting part is a rib abutting against the periphery of the chip 700, the rib is arranged to protrude from the surface (the surface in the C1 direction) of the supporting part 2251, and the limiting part and the supporting part 2251 are in an integral molding structure or can be in a separate structure. The limiting part includes a first rib 2252, a second rib 2253, a third rib 2254 and a fourth rib 2255, the first rib 2252 and the third rib 2254 extend along the first direction and have a length corresponding to the length of the chip 700, the first rib 2252 and the third rib 2254 respectively abut the two sides of the chip 700 in the second direction, the second rib 2253 and the fourth rib 2255 extend along the second direction and have a length corresponding to the width of the chip 700, and the second rib 2253 and the fourth rib 2255 respectively abut the two sides of the chip in the first direction. The two ends of the first rib 2252 and the third rib 2254 are respectively connected with the second rib 2253 and the fourth rib 2255, so as to form a rectangular enclosing body to surround the chip 700, thereby limiting the movement of the chip 700 in the first direction and the second direction.

[0068] Further, the upper surfaces (surfaces in the C1 direction) of all the ribs of the limiting portion are not higher than the upper surface (surface in the C1 direction) of the chip 700, and the chip 700 is not limited in the third direction. When the chip 700 needs to be replaced, the chip 700 can still be disassembled or installed in the third direction. Further, the first rib 2252 and the third rib 2254 can be provided with an opening portion 2256 (a notch on the rib), which is arranged close to the second rib 2253. The opening portion 2256 can avoid the rib interfering with or obstructing the clamping tool during the assembly and disassembly of the chip 700, and facilitate the clamping tool clamping the chip 700 to be installed on the chip mounting portion 225 or disassembled from the chip mounting portion 225.

[0069] In some other embodiments, the two ends of the plurality of ribs can also be disconnected, as long as they can abut against the chip 700 and limit the chip 700. Alternatively, the limiting portion can also be four protruding columns arranged on the surface of the support portion 2251 and located at the four corner positions of the chip 700. Each protruding column abuts against one corner of the chip 700 to limit the chip 700 in the first direction and the second direction.

[0070] When the process cartridge is installed on the electronic image forming apparatus, the electrical contact portion 710 is in contact with and electrically connected to the electrical contact pin in the electronic image forming apparatus, thereby establishing the communication between the chip 700 and the electronic image forming apparatus, and the electronic image forming apparatus can read and write the information in the storage portion.

[0071] Alternatively, the chip mounting portion 225 can not be arranged on the driving side end cover 220, but a chip rack mounting portion can be arranged, and the chip 700 is mounted on the driving side end cover 220 through the chip rack.

[0072] During the operation of the electronic image forming apparatus, the developing roller 140 needs to abut against and contact the photosensitive drum 240. When the electronic image forming apparatus is not in operation, the developing roller 140 needs to be separated from the photosensitive drum 240 by a certain distance, so as to avoid the problems that the photosensitive drum is polluted by the excess developer (toner) attached on the developing roller 140, the developing roller 140 is deformed, or the photosensitive drum 240 is abraded, etc.

[0073] Based on this, the drum unit 200 and the developing unit 100 in this embodiment are configured to move relative to each other, so that the developing roller 140 and the photosensitive drum 240 can contact each other when the electronic imaging device is working and separate when it is not working. When the processing cartridge is installed in the electronic imaging device, the drum unit 200 (specifically the drive-side end cover 220 and / or the conductive-side end cover 230) is pressed by the pressing component in the electronic imaging device, and the drum unit 200 cannot move. The developing unit 100 is configured to move relative to the drum unit 200 between a first position and a second position. When the developing unit 100 is in the first position, the developing roller 140 is in contact with the photosensitive drum 240; when the developing unit 100 is in the second position, the developing roller 140 is separated from the photosensitive drum 240.

[0074] like Figure 3 and Figure 4 As shown, in this embodiment, the processing box further includes a connecting portion, a limiting portion 224, a limited portion 136, a separation force receiving member 400, and an elastic member 500, for realizing the movement of the developing unit 100 relative to the drum unit 200 between a first position and a second position; in the first position, the developing roller 140 is in contact with the photosensitive drum 240; in the second position, the developing roller 140 is separated from the photosensitive drum 240. Viewed along the axial direction (first direction) of the developing roller 140, the connecting portion does not overlap with the developing coupling 320.

[0075] like Figure 3 and Figure 4 As shown, in this embodiment, the connecting part includes a support part 135 and a guide part 223. The support part 135 is provided near one end of the developing cover 130 in the third direction, specifically on the end face of the developing cover 130 near its lower end. The drive-side end cover 220 is provided with a guide part 223 that cooperates with the support part 135. The support part 135 moves within the range of the guide part 223. The guide part 223 is located below the notch 222 in the third direction, and the support part 135 is also located below the notch 222, corresponding to the guide part 223. That is, when viewed along the axial direction of the developing roller 140, the connecting part is always located below the notch 222 and has no overlap with the notch 222. The developing coupling 320 and the cylindrical part 131 on the developing cover 130 are all within the range of the notch 222. Therefore, when viewed along the axial direction of the developing roller 140, the connecting part and the developing coupling 320 also have no overlap.

[0076] Specifically, such as Figure 3 and Figure 4As shown, the support part 135 is a cylindrical member formed on the end face of the developing cover 130, preferably a circular cylinder, and can also be a structure of other polygonal prism; the guide part 223 is a through hole or a through slot formed on the driving side end cover 220, the through hole or the through slot is an arc hole or an arc slot, the guide part 223 extends in the second direction, when assembled, the support part 135 is embedded into the guide part 223, the range of the guide part 223 limits the moving range of the support part 135, that is, limits the range of the swing of the developing unit 100 relative to the drum unit 200. Optionally, the connecting part can be provided with multiple, that is, the support part 135 and the guide part 223 can be provided with multiple groups, multiple connecting parts can be arranged around the notch part 222, and multiple connecting parts are all without overlapping parts with the developing coupling 320.

[0077] In this embodiment, as shown in Figures 2 to 6 As shown, the driving side end cover 220 is provided with a limiting part 224 near the upper edge of the notch part 222, that is, the upper end of the driving side end cover 220 and beside the notch part 222 is provided with the limiting part 224, the limiting part 224 is a protrusion formed on the inner wall of the driving side end cover 220, and the limiting part 224 extends in the A2 direction; the developing cover 130 is provided with a limited part 136 matched with the limiting part 224, the limited part 136 is a protrusion formed on the outer wall of the developing cover 130, and the limited part 136 extends in the A1 direction, the limiting part 224 contacts the limited part 136 when the developing unit 100 moves from the second position to the first position, and in the second direction, the limiting part 224 is located at the rear side (one side in the B2 direction) of the limited part 136, the contact between the limiting part 224 and the limited part 136 can play a limiting role, preventing the developing unit 100 from deviating from the first position. When the developing unit 100 is located at the first position, the lower end of the developing unit 100 is close to the lower end of the drum unit 200, so that the developing roller 140 can contact the photosensitive drum 240, and the support part 135 is located at one end in the B1 direction in the guide part 223; when the developing unit 100 is subjected to the force of the electronic imaging equipment and moves from the first position to the second position, the support part 135 moves from one end in the B1 direction to one end in the B2 direction in the guide part 223, the lower end of the developing unit 100 swings away from the drum unit 200 (generally in the B2 direction), driving the developing roller 140 to separate from the photosensitive drum 240, at the same time, the upper end of the developing unit 100 swings towards the drum unit 200 (generally moves in the B1 direction), and the limited part 136 moves along the B1 direction and separates from the limiting part 224.

[0078] As shown in Figures 2 to 11As shown, the movement of the developing unit 100 from the first position to the second position is achieved by the cooperation of the separation force receiver 400 and the separation force applicator (not shown) in the electronic imaging device. The separation force receiver 400 is movably disposed in the developing unit 100 and can rotate between the working position and the avoidance position; specifically, the separation force receiver 400 is rotatably mounted on the lower end (one end in the C2 direction) of the developing cover 130. The separation force receiver 400 is generally a long strip-shaped block member, the length of which extends along the second direction. The separation force receiver 400 includes a main body 410, on which a locking part 420, a sliding avoidance surface 430 and a separation force receiving part 440 are provided.

[0079] like Figures 7 to 10 As shown, the locking part 420 is disposed at one end of the main body 410 in the length direction. The developing cover 130 is provided with a connecting part 133 that cooperates with the locking part 420. Preferably, the locking part 420 is a slot formed on the main body 410, and the connecting part 133 is a locking post disposed near the lower end of the developing cover 130. The axial direction of the locking post extends along the third direction. After the locking part 420 is engaged with the locking post, the separation force receiving member 400 can rotate around the locking post. That is, the separation force receiving member 400 can rotate around the locking post in the plane formed by the first direction and the second direction. In other words, with the locking post as the axis, the end of the separation force receiving member 400 away from the locking part 420 can swing in the A1 direction or the A2 direction. Specifically, it can swing to the avoidance position in the A2 direction and to the working position in the A1 direction. In the working position, the separation force receiver 400 receives the separation force from the separation force applicator to separate the developing roller 140 from the photosensitive drum 240. The working position of the separation force receiver 400 is also its initial state. When the end of the separation force receiver 400 away from the locking part 420 rotates towards the A2 direction, the separation force receiver 400 rotates from the working position to the clearance position. Alternatively, the locking part 420 can be a locking post, and the engaging part 133 can be a locking groove, which can also achieve a rotatable connection between the separation force receiver 400 and the developing cover 130; it can also be a mutual cooperation between a through hole and a rotating shaft.

[0080] like Figures 2 to 8 As shown, at least a portion of the main body 410 of the separation force receiver 400 protrudes downward from the end face 134 of the developing cover 130. A groove is provided on the end face 134 for the separation force receiver 400 to rotate, while also limiting the rotation range of the separation force receiver 400. When the separation force receiver 400 abuts against the inner surface of the groove on one side in the A1 direction, its rotation in the A1 direction is stopped, and the separation force receiver 400 is in the working position. A sliding clearance surface 430 is provided on the main body 410. All or at least a portion of the sliding clearance surface 430 protrudes downward from the groove to the lower side of the end face 134, allowing the sliding clearance surface 430 to cooperate with the separation force application component of the electronic imaging device.

[0081] As shown in Figures 6 to 8 the embodiment, when the separation force receiving member 400 is assembled on the developing cover 130, the slide avoiding surface 430 is generally directed toward the A1 direction, the slide avoiding surface 430 is an outward convex arc surface, the extension direction of the slide avoiding surface 430 forms an acute angle with the extension direction of the separation force receiving member 400, and the extension direction of the slide avoiding surface 430 extends generally from the A2, B2 side to the A1, B1 side. Alternatively, the slide avoiding surface 430 can also be a plane; the slide avoiding surface 430 can also be an irregular surface formed by one or more arc surfaces and / or planes. The extension direction of the separation force receiving member 400 is perpendicular to the rotation axis of the photosensitive drum 240.

[0082] As shown in Figure 8 Figure 10 and Figure 11 the separation force receiving member 400 also has a separation force receiving portion 440, the separation force receiving portion 440 is located at the end of the main body 410 away from the clamping portion 420, the separation force receiving portion 440 is located on the B1 direction side of the slide avoiding surface 430, and the separation force receiving portion 440 is connected to the end of the slide avoiding surface 430 in the B1 direction, the separation force receiving portion 440 is generally directed toward the B1 direction, and the separation force receiving portion 440 can be a plane, which is parallel to the plane formed by the first direction and the third direction, and perpendicular to the plane formed by the first direction and the second direction. The separation force receiving portion 440 protrudes downward from the end surface 134 of the developing cover 130 in whole or at least a part, so that the separation force receiving portion 440 can be in contact with the separation force applying member to receive the separation force.

[0083] Further, as shown in Figure 4 , Figure 7 and Figure 8As shown, the processing cartridge further comprises a reset member 600 for applying a force to the separation force receiving member 400 to reset it from the avoiding position to the working position, the reset member 600 is elastic, and is compressed when the separation force applying member pushes the separation force receiving member 400 to rotate. Preferably, the reset member 600 is a torsion spring, which is installed on the developing cover 130. Specifically, the developing cover 130 is provided with a mounting seat 137 for mounting the torsion spring near the lower end, the coil of the torsion spring is sleeved on the mounting seat 137, one arm of the torsion spring abuts against the developing cover 130, and the other arm abuts against the abutting portion 450 of the main body 410 of the separation force receiving member 400. The torsion spring is configured to always apply a force to the separation force receiving member 400 in the direction of A1, so that the separation force receiving member 400 remains in the working position (i.e., the initial state of the separation force receiving member 400) under no other external force. Alternatively, the reset member 600 can be a compression spring, a tension spring, elastic rubber, elastic sponge or other elastic components, and can also be other reset structures in a non-elastic manner.

[0084] As shown in Figures 2 to 9 , Figure 11 , the processing cartridge of the embodiment further comprises a shielding portion 138, which is arranged on the developing unit 100 and can protect the separation force receiving member 400, and moves with the developing unit 100 relative to the drum unit 200. Specifically, the shielding portion 138 is a rectangular baffle structure (which can also be other geometric shapes), and is arranged at one end (the end in the direction of C2) of the developing cover 130. The shielding portion 138 extends downward along the direction of C2, and when the developing unit 100 is in the first position, as viewed along the rotation axis of the photosensitive drum 240 (the first direction), the lower end of the separation force receiving member 400 does not protrude beyond the lower end of the shielding portion 138. Preferably, there is a certain distance between the lower end of the separation force receiving member 400 and the lower end of the shielding portion 138. When the processing cartridge is placed on the desktop with the lower end facing the desktop, the shielding portion 138 contacts the desktop first, thereby protecting the separation force receiving member 400, and correspondingly, the separation force receiving portion 440 is also protected. Alternatively, the lower end of the shielding portion 138 can be flush with the lower end of the separation force receiving member 400, so that the separation force receiving member 400 is also protected by the shielding portion 138.

[0085] In the embodiment, in the first direction, the separation force receiving member 400 and the shielding portion 138 have an overlapping portion. Specifically, the shielding portion 138 at least overlaps the separation force receiving portion 440, and can at least protect the separation force receiving portion 440 (i.e., the separation force receiving portion 440 is entirely within the shielding range of the shielding portion 138). The shielding portion 138 can also overlap most or all of the separation force receiving member 400, and the size of the shielding portion 138 can be adjusted adaptively, which is not limited in the embodiment.

[0086] Further, in the first direction, the shielding portion 138 is closer to the driving side end cover 220 than the separation force receiving member 400, i.e. the shielding portion 138 is located on the A1 direction side (outer side) of the separation force receiving member 400, and when the process cartridge is subjected to a collision in the first direction, the shielding portion 138 can effectively protect the separation force receiving member 400. Further, the developing cover 130 is further provided with an extension portion 139 extending from the end surface 134 of the developing cover 130 to the lower side of the driving side end cover 220 in the A1 direction, and the shielding portion 138 is provided at the end of the extension portion 139 away from the developing cover 130 (the A1 direction end), i.e. the shielding portion 138 is located on the lower side of the driving side end cover 230 (the shielding portion 138 and the driving side end cover 230 have a coinciding portion in the third direction), but the shielding portion 138 does not protrude from the end surface of the driving side end cover 220 on the A1 direction side.

[0087] In some other embodiments, as shown in Figs. 13A and 13B, the process cartridge can also not be provided with the extension portion, and the shielding portion 138 is directly provided on the developing cover 130, and the shielding portion 138 and the driving side end cover 220 do not have a coinciding portion in the third direction. Figure 12 and Figure 13 In some other embodiments, as shown in Figs. 13A and 13B, the process cartridge can also not be provided with the extension portion, and the shielding portion 138 is directly provided on the developing cover 130, and the shielding portion 138 and the driving side end cover 220 do not have a coinciding portion in the third direction.

[0088] In the present embodiment, the shielding portion 138 is entirely made of a hard material, or can be entirely made of an elastic material, or can be partially made of a hard material and partially made of an elastic material; further, the shielding portion 138 can be integrally formed with the developing cover 130, or can be separately formed from the developing cover 130, for example, the portion of the shielding portion 138 made of a hard material is fixedly connected to the developing cover 130, and an elastic member such as a sponge or rubber is attached below the portion made of a hard material, and at this time, the portion made of a hard material can be regarded as a part of the developing cover 130, or the elastic member is directly provided below the developing cover 130 (fixedly connected by means of sticking, clamping or the like), and preferably, the elastic member is stuck to the lower end of the portion made of a hard material or directly attached to the developing cover 130.

[0089] In some other embodiments, the shielding portion 138 is movably connected with the developing cover 130, and the movement can be at least any one of rotation, sliding, translation, etc. For example, the shielding portion 138 is arranged to be retractable relative to the developing cover 130. When the shielding portion 138 is not subjected to a force, the shielding portion 138 is in a position where it is extended downward, so that the lower end of the separation force receiving member 400 does not protrude beyond the lower end of the shielding portion 138. When the shielding portion 138 is subjected to a force, the shielding portion 138 moves upward to a position where the lower end thereof is higher than or flush with the lower end of the separation force receiving member 400. In this way, the interference between the shielding portion 138 and the electronic image forming apparatus during the installation / dismounting of the process cartridge can be reduced. The force for forcing the shielding portion 138 to move can be applied by a user, for example, by manually pushing the shielding portion 138. Alternatively, a linkage structure can be provided to apply the force to the shielding portion 138 by a user. For example, the shielding portion 138 can be linked with a handle. When a user holds the handle to lift the process cartridge for installation or dismounting, the shielding portion 138 moves in linkage.

[0090] In the present embodiment, the shielding portion 138 is located outwardly and downwardly of the separation force receiving member 400, and can effectively protect the separation force receiving member 400. The separation force receiving member 400 can be protected by the shielding portion 138 before the process cartridge is installed in the electronic image forming apparatus or during transportation of the process cartridge, so that the separation force receiving member 400 can be prevented from being collided or abraded.

[0091] As shown in Figs. 1 and 2, the drum unit 200 and the developing unit 100 are arranged to be movable relative to each other. In the present embodiment, the drum unit 200 is arranged to be movable relative to the developing unit 100. In other embodiments, the developing unit 100 can be arranged to be movable relative to the drum unit 200. Figure 2 and Figure 3 As shown in Figs. 1 and 2, the drum unit 200 and the developing unit 100 are arranged to be movable relative to each other. In the present embodiment, the drum unit 200 is arranged to be movable relative to the developing unit 100. In other embodiments, the developing unit 100 can be arranged to be movable relative to the drum unit 200.

[0092] As shown in Figs. 1 and 2, the drum unit 200 and the developing unit 100 are arranged to be movable relative to each other. In the present embodiment, the drum unit 200 is arranged to be movable relative to the developing unit 100. In other embodiments, the developing unit 100 can be arranged to be movable relative to the drum unit 200. Figures 2 to 11As shown, after the process cartridge is installed in place in the image forming device, at this time the separation force receiving member 400 is in the working position, the separation force applying member of the electronic image forming device starts to move, when the separation force applying member moves in the B1 direction, the separation force applying member contacts the sliding avoiding surface 430, the separation force applying member slides along the sliding avoiding surface 430 and applies a pushing force to the sliding avoiding surface 430, the pushing force makes the separation force receiving member 400 swing around the joint 133 towards the A2 direction, from the working position to the avoiding position, so that the separation force applying member can continue to move in the B1 direction, during the swing of the separation force receiving member 400, the reset member 600 is compressed and deformed, when the separation force applying member moves to a position where it is separated from the sliding avoiding surface 430, the pushing force of the separation force applying member to the sliding avoiding surface 430 disappears, the reset member 600 elastically deforms to recover, and pushes the separation force receiving member 400 to swing towards the A1 direction, from the avoiding position to the working position, when the separation force receiving member 400 reaches the working position, the separation force receiving part 440 of the separation force receiving member 400 is opposite to the separation force applying member, i.e. the two at least partially coincide in the second direction, the separation force applying member and the separation force receiving part 440 can not contact, or can contact but have no interaction force, at this time the preparation state of the electronic image forming device is completed, and the developing work can be carried out.

[0093] When the electronic image forming device is not working, the separation force applying member moves in the B2 direction, the separation force applying member contacts the separation force receiving part 440 and applies a separation force to the separation force receiving part 440, the separation force received by the separation force receiving part 440 acts on the entire developing unit 100 via the separation force receiving member 400, after the developing unit 100 is forced, the lower end of the developing unit 100 swings in the direction away from the drum unit 200 (generally in the B2 direction), the developing unit 100 moves from the first position to the second position, and drives the developing roller 140 to separate from the photosensitive drum 240, at the same time, the upper end of the developing unit 100 moves in the direction close to the photosensitive drum 240 (generally in the B1 direction), and compresses the elastic member 500.

[0094] When the electronic image forming device needs to work, the separation force applying member moves in the B1 direction, the separation force of the separation force applying member to the separation force receiving part 440 is removed, the elastic member 500 deforms to recover, and pushes the developing unit 100 to move from the second position to the first position, the developing roller 140 contacts the photosensitive drum 240, and the developing work can be carried out.

[0095] Embodiment Two

[0096] This embodiment provides another process cartridge, which is different from the first embodiment in that the structure of the shielding part is different.

[0097] As shown in the figure, the shielding part 300 is arranged on the lower end of the developing unit 100, and is arranged on the side of the developing unit 100 away from the drum unit 200. Figures 14 to 17As shown, in this embodiment, the shielding portion 460 is arranged on the main body 410 of the separation force receiving member 400, and is located on one side of the separation force receiving portion 440. Specifically, the shielding portion 460 is located on the A1 side of the separation force receiving portion 440 and extends along the B1 direction, that is, the shielding portion 460 is located in the plane formed by the second direction and the third direction, and the separation force receiving portion 440 intersects (preferably, is perpendicular to) the shielding portion 460. The lower end (C2 direction end) of the shielding portion 460 is lower than or flush with the lower end (C2 direction end) of the separation force receiving portion 440, and when viewed along the rotation axis of the photosensitive drum 240 (the first direction), the lower end of the separation force receiving portion 440 does not protrude beyond the lower end of the shielding portion 460. In this way, when the process cartridge is placed on a desktop, the shielding portion 460 comes into contact with the desktop before the separation force receiving portion 440, thereby protecting the separation force receiving member 400.

[0098] In this embodiment, in the first direction, the shielding portion 460 is located on the outside (A1 side) of the separation force receiving portion 440, and the separation force receiving portion 440 is completely located within the shielding range of the shielding portion 460. When the process cartridge receives a collision in the first direction, the shielding portion 460 can effectively protect the separation force receiving portion 440.

[0099] In this embodiment, the shielding portion 460 is a substantially rectangular baffle structure (the length direction extends along the third direction, and the width direction extends along the second direction), and can also be arranged in other geometric shapes as long as it can completely shield the separation force receiving portion 440. The shielding portion 460 can be entirely made of a hard material, entirely made of an elastic material, partially made of a hard material, and partially made of an elastic material. Further, the shielding portion 460 can be integrally formed with the separation force receiving member 400, or can be separately formed from the separation force receiving member 400. For example, the portion of the shielding portion 460 made of a hard material is fixedly connected to the separation force receiving member 400, and an elastic member such as a sponge or rubber is attached to the portion made of a hard material. In this case, the portion made of a hard material can be regarded as a part of the main body 410, or the elastic member can be directly arranged on the main body 410 (and can be fixed by means of adhesion, clamping, etc.).

[0100] In this embodiment, the lower end of the separation force receiving portion 440 does not protrude beyond the lower end of the shielding portion 460, and the shielding portion 460 shields the separation force receiving portion 440 from the outside, thereby effectively protecting the separation force receiving portion 440 from being collided, worn, etc.

[0101] As Figures 14 to 17As shown, when the separation force receiving member 400 is in the working position, the separation force receiving portion 440 is opposite to the separation force applying member 900, when the separation force receiving portion 440 contacts the separation force applying member 900 and receives the separation force, the separation force receiving member 400 has a tendency to move from the working position to the avoiding position (i.e. the end of the separation force receiving member 400 away from the card turning portion 420 has a tendency to swing towards the A2 direction), which will affect the separation force receiving member 400 to receive the separation force. The blocking portion 460 can also block the separation force receiving member 400 to move to the avoiding position when the separation force receiving portion 440 receives the separation force. Specifically, the separation force receiving portion 440 of the present embodiment is a plane (a plane parallel to the first direction and the third direction, a plane perpendicular to the first direction and the second direction), i.e. the separation force receiving portion 440 is perpendicular to the blocking portion 460, when the separation force receiving portion 440 contacts the end surface of the separation force applying member 900, the blocking portion 460 also abuts against the side surface of the separation force applying member 900 on the A1 direction side, so that the separation force receiving member 400 cannot rotate, thereby blocking the separation force receiving member 400 to move to the avoiding position, ensuring that the separation force applying member 900 and the separation force receiving portion 440 are in stable contact, and the separation force can be stably transmitted.

[0102] In some other embodiments, as Figure 18 and Figure 19As shown, the processing cartridge can also set the separation force receiving portion 440a as an inclined surface, i.e. translate the A1 direction end of the separation force receiving portion 440a to the B1 direction, make the A1 direction end of the separation force receiving portion 440a flush with the B1 direction end of the shielding portion 460, i.e. the separation force receiving portion 440a (inclined surface) is perpendicular to the plane formed by the first direction and the second direction, intersects the plane formed by the first direction and the third direction, the inclined surface is inclined from the A1, B1 direction side to the A2, B2 direction side, the separation force receiving portion 440a is inclinedly arranged relative to the shielding portion 460, as viewed in the A2 direction, the separation force receiving portion 440a is still completely shielded by the shielding portion 460, i.e. the shielding portion 460 can effectively protect the separation force receiving portion 440 from the outside (A1 direction side). In addition, the separation force receiving portion 440a arranged as an inclined surface can also serve to stably contact the separation force applying member 900 with the separation force receiving portion 440, i.e. the separation force receiving portion 440a can also receive the force to keep the separation force receiving member 400 in the working position. Specifically, when the separation force applying member 900 moves along the B2 and contacts the separation force receiving portion 440a (inclined surface), the separation force receiving portion 440a has components in the B2 direction and the A1 direction (the directions of the two components intersect), the component in the B2 direction is the separation force, and the component in the A1 direction can press the separation force receiving member 400 to the position (i.e. the working position) abutting against the inner surface of the groove of the developing cover 130 in the A1 direction, the separation force receiving member 400 cannot rotate to the avoiding position, ensuring that the separation force applying member 900 stably contacts the separation force receiving portion 440a, and the separation force can be stably transmitted.

[0103] The processing cartridge of the present embodiment has the same other structures as those of Embodiment One, which will not be described herein.

[0104] The above only describes some embodiments of the present application. Those skilled in the art can make several modifications and improvements without departing from the inventive concept, which are all within the protection scope of the present application.

Claims

1. A processing cartridge, detachably mounted in an electronic imaging device, the electronic imaging device including a separation force application element, characterized in that, include: The drum unit rotatably supports the photosensitive drum; The developing unit is rotatably supported by a developing roller. The developing unit is movable relative to the drum unit between a first position and a second position. In the first position, the developing roller is in contact with the photosensitive drum, and in the second position, the developing roller is separated from the photosensitive drum. A separation force receiver is movably disposed in the developing unit and is capable of moving between a working position and a retraction position. The separation force receiver includes a separation force receiving part for receiving the separation force of the separation force applying member. In the retraction position, the separation force receiver is capable of retraction from the separation force applying member. In the working position, the separation force receiving part is capable of receiving the separation force of the separation force applying member to move the developing unit from a first position to a second position. A shielding part is disposed in the developing unit. When viewed along the rotation axis of the photosensitive drum, the separation force receiving part is completely located within the shielding range of the shielding part, and the shielding part moves with the developing unit relative to the drum unit.

2. The processing box according to claim 1, characterized in that, The developing unit has a developing cover at one end along its length, and the shielding part is located at one end of the developing cover.

3. The processing box according to claim 1, characterized in that, When the developing unit is in the first position and the rotation axis of the photosensitive drum is located below the rotation axis of the developing roller, when viewed along the rotation axis of the photosensitive drum, the lower end of the separation force receiving member does not protrude from the lower end of the blocking part.

4. The processing box according to claim 2, characterized in that, The separation force receiver is movably disposed on the developing cover.

5. The processing box according to claim 4, characterized in that, One end of the drum unit along its length is provided with an end cap, and the end cap is at least partially located outside the developing cover; The shielding portion is closer to the end cap than the separation force receiving member.

6. The processing box according to claim 5, characterized in that, The developing cover has an extension that extends from the end face of the developing cover along the length of the developing unit to the lower side of the end cover. The shielding part is located at the end of the extension away from the developing cover.

7. A processing cartridge, detachably mounted in an electronic imaging device, the electronic imaging device including a separation force application element, characterized in that, include: The drum unit rotatably supports the photosensitive drum; The developing unit is rotatably supported by a developing roller. The developing unit is movable relative to the drum unit between a first position and a second position. In the first position, the developing roller is in contact with the photosensitive drum, and in the second position, the developing roller is separated from the photosensitive drum. A separation force receiver is movably disposed in the developing unit and is capable of moving between a avoidance position and a working position. The separation force receiver includes a separation force receiving part and a blocking part. In the avoidance position, the separation force receiver can avoid the separation force applying member. In the working position, the separation force receiving part can receive the separation force of the separation force applying member to move the developing unit from a first position to a second position. When viewed along the rotation axis of the photosensitive drum, the separation force receiving part is completely within the blocking range of the blocking part.

8. The processing box according to claim 7, characterized in that, After the processing box is installed in the electronic imaging device, the separation force receiving component moves from the working position to the avoidance position under the pushing force of the separation force applying component when it moves.

9. The processing box according to claim 8, characterized in that, The blocking part is located on one side of the separation force receiving part, and the blocking part is configured to prevent the separation force receiving part from moving to the avoidance position when the separation force receiving part receives the separation force.

10. The processing box according to claim 9, characterized in that, When the separating force receiving part abuts against the separating force applying member to receive the separating force, the blocking part abuts against the separating force applying member to prevent the separating force receiving member from moving to the avoidance position.

11. The processing box according to claim 10, characterized in that, The separation force receiving part is perpendicular to the shielding part.

12. The processing box according to claim 8, characterized in that, The separation force receiving part is an inclined surface.

13. The processing box according to claim 12, characterized in that, The separation force receiving part is inclined relative to the shielding part.

14. The processing box according to claim 12, characterized in that, When the separating force receiving part comes into contact with the separating force applying member, the separating force receiving part receives the separating force and the force intersecting with the separating force, and the force keeps the separating force receiving member in the working position.

15. The processing box according to any one of claims 7-14, characterized in that, When the developing unit is in the first position and the rotation axis of the photosensitive drum is located below the rotation axis of the developing roller, when viewed along the rotation axis of the photosensitive drum, the lower end of the separation force receiving part does not protrude from the lower end of the blocking part.

Images