A developing box

Abstract

The utility model discloses a developing box, which can be detachably mounted on an image forming device including a drum assembly, wherein the drum assembly includes a photosensitive drum, and the developing box includes: a box body, which is used to store a developer, wherein the box body has a first end and a second end arranged oppositely in a first direction, and has a third end and a fourth end arranged oppositely in a second direction, wherein the first direction and the second direction intersect; a developing roller, which is rotatably supported at the third end of the box body, wherein the rotation axis of the developing roller extends along the first direction, and the developing roller contacts the photosensitive drum to transfer the developer; a driving part, which is arranged at the first end of the box body and can receive the driving force of the image forming device; a separating component, which receives the separating force and drives the box body to move so as to separate the developing roller from the photosensitive drum; and the separating component is located at the first end or the second end of the box body. The developing box of the utility model is provided with a separating component at the first end or the second end of the box body, so that the structure is simpler, the operation is more stable, and the cost is lower.

Description

Technical Field

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

[0002] A developer cartridge is a detachable component widely used in image forming devices, and includes a developer roller. An image forming device is typically equipped with four developer cartridges corresponding to the four photosensitive drums on the device. Each developer cartridge contains a different color of developer. The developer roller contacts the photosensitive drum and transfers toner to the drum, allowing the image forming device to utilize various colors of toner for better imaging, meeting the user's diverse printing needs. To prevent prolonged contact between the developer roller and the photosensitive drum, which could damage the developer roller or drum, the developer cartridge separates from the photosensitive drum when it is no longer needed. Therefore, a separator is provided on the developer cartridge to receive the separation force provided by the image forming device, separating the developer roller from the photosensitive drum and ensuring the image quality of the image forming device. Utility Model Content

[0003] According to one aspect of the present invention, there is provided a developing cartridge detachably mounted on an image forming apparatus including a drum assembly, wherein the drum assembly includes a photosensitive drum, and the developing cartridge includes:

[0004] a box body for storing developer, the box body having a first end and a second end opposite to each other in a first direction, a third end and a fourth end opposite to each other in a second direction, and a fifth end and a sixth end opposite to each other in a third direction, wherein the first direction, the second direction, and the third direction intersect;

[0005] a developing roller rotatably supported at a third end of the cartridge body, wherein a rotation axis of the developing roller extends along a first direction, and the developing roller contacts the photosensitive drum to transfer developer;

[0006] a driving portion, disposed at the first end of the box body and capable of receiving a driving force of the image forming device;

[0007] A separation component receives the separation force to drive the box body to move so as to separate the developing roller from the photosensitive drum. The separation component is located at the first end or the second end of the box body.

[0008] In some embodiments, the separation assembly is located at the second end, and the separation assembly includes a force-bearing member and a force-applying member. The force-bearing member receives the separation force and moves relative to the box body in the second direction toward the developing roller, and drives the force-applying member to move in the first direction toward the box body, and then the force-applying member drives the box body to move in the second direction away from the photosensitive drum.

[0009] In some embodiments, a second force-bearing surface is provided on the box body, and the force-applying member includes a second force-applying surface. A starting end of one of the second force-bearing surface and the second force-applying surface extending in the first direction is closer to the second end than an end, and a starting end extending in the second direction is closer to the developing roller than an end. The second force-applying surface abuts against the second force-bearing surface and causes the box body to move in the second direction away from the photosensitive drum.

[0010] In some embodiments, the force-bearing member includes a first force-applying surface, the force-applying member includes a first force-bearing surface, the starting end of one of the first force-applying surface and the first force-bearing surface extending in the first direction is closer to the second end than the end, and the starting end extending in the second direction is farther away from the developing roller than the end, the first force-applying surface abuts against the first force-bearing surface and causes the force-applying member to move along the first direction.

[0011] In some embodiments, a second protective cover is provided at the second end of the box body, the second protective cover is slidably arranged on the box body, the force receiving member and the force applying member are movably arranged on the second protective cover, and the second protective cover abuts against the drum assembly.

[0012] In some embodiments, a second protective cover is provided at the second end of the box body, the second protective cover is slidably disposed on the box body, the force-receiving member and the force-applying member are movably disposed on the second protective cover, and the second protective cover abuts against the drum assembly;

[0013] The developing box also includes a bearing arranged at the second end of the box body and a powder feeding roller extending along the first direction, the bearing supports the developing roller and the powder feeding roller; the second protective cover is installed on the bearing and can slide relative to the bearing; the second force surface is arranged on the bearing.

[0014] In some embodiments, the separation component is located at the first end, and the separation component includes a force-bearing member, a transmission member, a limiting member, a force-applying member and a second elastic member. The transmission member and the limiting member are sleeved on the end portion of the developing roller located at the first end, the transmission member abuts against the limiting member, the limiting member abuts against the force-applying member to limit the force-applying member from moving in the second direction, the second elastic member abuts against the force-applying member and is in a compressed state, when the force-bearing member receives the separation force, it moves in the first direction and drives the transmission member and the limiting member to move in the first direction, and the force-applying member moves in the second direction toward the developing roller under the elastic force of the second elastic member.

[0015] In some embodiments, the force-applying member is provided with a first abutting surface, the starting end of the first abutting surface extending in the first direction is farther away from the second end than the end, and the starting end of the first abutting surface extending in the second direction is farther away from the fourth end than the end, and when the force-bearing member does not receive the separation force, the limiting member abuts against one end of the first abutting surface.

[0016] In some embodiments, the separation assembly further includes a first elastic member, which is sleeved on the end portion of the developing roller located at the first end, and the first elastic member abuts between the developing roller and the limiting member.

[0017] In some embodiments, the second end is provided with a second guide portion, and the separation component is a separation protrusion provided at the second end, the separation protrusion is fixedly mounted on the box body or formed integrally with the box body, and the separation protrusion extends along the first direction. In the second direction, the separation protrusion is closer to the fourth end than the second guide portion.

[0018] In some embodiments, the drum assembly includes a guide groove, the second guide portion abuts against the guide groove, the abutment between the second guide portion and the guide groove is a fulcrum swing, and the first end moves in the second direction toward and away from the photosensitive drum.

[0019] In some embodiments, a portion of the separation protrusion is further away from the first end than the second guide portion in the first direction; or

[0020] The separation protrusion has a force-bearing surface, wherein a starting end of the force-bearing surface extending in the second direction is farther away from the developing roller than an ending end, and a starting end extending in the third direction is closer to the fifth end than an ending end.

[0021] In some embodiments, the drum assembly includes a guide groove, and the second end is provided with a second guide portion abutting against the guide groove;

[0022] The separation component is a separation rod, which extends from the second end to the first end and is installed on the box body. The separation rod is provided with a force-bearing portion located at the second end. The force-bearing portion receives the separation force to make the developing box swing with the abutment between the second guide portion and the guide groove as a fulcrum, and the first end moves in the second direction toward and away from the photosensitive drum.

[0023] In some embodiments, the drum assembly includes a guide groove, and the second end is further provided with a second guide portion abutting against the guide groove;

[0024] The separation component includes a moving part, which is movably arranged at the second end, and the moving part includes a force-bearing part and a force-applying part; the force-bearing part receives the separation force to make the moving part move in the second direction relative to the box body toward the direction close to the developing roller, and the force-applying part can be inserted between the second guide part and the upper groove part of the guide groove.

[0025] In some embodiments, the force-applying portion is pointed, and the outer diameter of the force-applying portion gradually increases from front to back. As the movable member moves, the force-applying portion is inserted between the second guide portion and the upper groove portion of the guide groove, thereby increasing the distance between the second guide portion and the upper groove portion, thereby causing the developing box to move away from the photosensitive drum.

[0026] In some embodiments, a third elastic member is provided on the second guide portion, and the third elastic member abuts against the lower groove portion of the guide groove.

[0027] In some embodiments, the separation assembly includes a force-receiving member and a force-applying member, wherein the force-receiving member receives the separation force and moves in a third direction relative to the box body and drives the force-applying member to move in the second direction.

[0028] In some embodiments, the force-bearing member includes a first force-bearing surface and a second force-bearing surface for receiving the separation force, the first force-bearing surface is connected to the second force-bearing surface, and the first force-bearing surface and the second force-bearing surface form an included angle; in the second direction, the first force-bearing surface is farther away from the developing roller than the second force-bearing surface;

[0029] The force-bearing member also includes a first force-applying surface, a transition surface, and a second force-applying surface. The first force-applying surface and the second force-applying surface extend along a third direction intersecting the first direction and the second direction, and in the second direction, the second force-applying surface is closer to the developing roller than the first force-applying surface. The first force-applying surface is connected to the second force-applying surface through the transition surface, and the transition surface is inclined relative to the first force-applying surface and the second force-applying surface.

[0030] In some embodiments, the force applying member includes a housing, a third abutting member, and a seventh elastic member;

[0031] The shell is movably provided on the box body and abuts against the force-bearing member, the third abutting member is movably provided on the shell, and the seventh elastic member abuts against the third abutting member and the shell;

[0032] When the force-bearing member receives the separation force and moves, the shell abuts against the first force-applying surface, the transition surface, and the second force-applying surface in sequence, so that the shell drives the third abutting member and the seventh elastic member to move in the second direction toward the third end, and the third abutting member abuts against the drum assembly, and the seventh elastic member is compressed and stores elastic potential energy. Under the action of the elastic potential energy of the seventh elastic member, the developing box moves in the direction away from the photosensitive drum.

[0033] In some embodiments, a second protective cover is fixedly provided at the second end, the second protective cover includes a second abutting surface and a third abutting surface, the second abutting surface and the third abutting surface are arranged opposite to each other with a gap therebetween, the second abutting surface and the third abutting surface extend downwardly in a direction intersecting the second direction, the third abutting surface is closer to the developing roller than the second abutting surface, and along the extension direction of the second abutting surface and the third abutting surface, the gap between the two gradually decreases in the third direction, the second protective cover has a second opening, and the second opening is located below the third abutting surface;

[0034] The force-bearing member is movably mounted on the second protective cover;

[0035] The force applying member is disposed in the second protective cover and is located between the second abutting surface and the third abutting surface.

[0036] In some embodiments, the force applying member includes a housing, a fourth abutting member, a fifth abutting member, and an eighth elastic member;

[0037] The shell is movably provided on the box body, the shell abuts against the force-bearing member and the shell slides in the third direction relative to the box body, the fourth abutting member and the fifth abutting member are movably provided on the shell, the fourth abutting member abuts against the second abutting surface, the fifth abutting member includes a second abutting end, the second abutting end abuts against the third abutting surface; the eighth elastic member abuts between the fourth abutting member and the fifth abutting member respectively;

[0038] The second abutting end can be separated from the abutting contact with the third abutting surface and extend out of the second protective cover through the second opening.

[0039] In some embodiments, the drum assembly includes a force applying assembly for applying a pushing force to the developing cartridge to bring the developing roller into contact with the photosensitive drum;

[0040] The force applying assembly includes a third elastic component;

[0041] The developing cartridge includes a third urging portion and a fourth urging portion for receiving an urging force, wherein the third urging portion is farther away from the developing roller than the fourth urging portion in the second direction;

[0042] When the separation component does not receive the separation force, the force-applying component abuts against the third pushing portion, the third elastic component is compressed and has a second elastic force; when the separation component receives the separation force movement, the force-applying component moves relatively to abut against the fourth pushing portion, the third elastic component is compressed and has a third elastic force, and the third elastic force is smaller than the second elastic force.

[0043] In some embodiments, the separation assembly includes an abutment member and a second elastic member, the abutment member is movably disposed on the box body, and the second elastic member abuts against the abutment member;

[0044] When the separation assembly does not receive the separation force, the abutment member abuts against the drum assembly, the second elastic component is compressed and has a first elastic force, the second elastic force is greater than the first elastic force, and the third elastic force is less than the first elastic force.

[0045] In some embodiments, the separation assembly further comprises a force-bearing member, a force-applying member, and a pushing member movably disposed on the box body;

[0046] The force-bearing member abuts against the force-applying member, and the force-applying member abuts against the pushing member;

[0047] The force-receiving member receives the separation force to move and drives the force-applying member to move, and the force-applying member drives the pushing member to move along the first direction or the direction intersecting the first direction and the second direction.

[0048] In some embodiments, the third and fourth forced pushing portions are both provided on the forced pushing member; the forced pushing member is further provided with a transition surface, the transition surface connecting the third and fourth forced pushing portions; or,

[0049] The second end of the box body is provided with an abutting component, and the fourth forcing portion is arranged on the abutting component; the third forcing portion is arranged on the forcing member.

[0050] In some embodiments, before the force-bearing member receives the separation force, the force-applying component abuts against the third pushing portion;

[0051] The force-bearing member receives the separating member and moves in a direction intersecting the first direction and the second direction and drives the force-applying member to move in the third direction away from the fifth end. The force-applying member drives the pushing member to move in the first direction. The force-applying assembly moves from abutting against the third pushing portion to abutting against the fourth pushing portion. The abutting member moves under the action of the second elastic member and abuts against the drum assembly, causing the box body to move in a direction away from the photosensitive drum.

[0052] In some embodiments, at least one elastic component is further included for resetting the pushing member. The elastic component connects the pushing member and the box body. When the pushing member is driven to move by the force-applying member, the elastic component is deformed.

[0053] The beneficial effects of the present invention are as follows: the developer box of the present invention is provided with a separation component at the first end or the second end of the box body, which has a simpler structure, more stable operation and lower cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 This is a structural diagram of the developing cartridge in the first embodiment of the present invention;

[0055] Figure 2 This is a structural diagram of the first end of the developing cartridge in the first embodiment of the present utility model;

[0056] Figure 3 This is a structural diagram of the first end of the developing cartridge hiding the first protective cover in the first embodiment of the present invention;

[0057] Figure 4 This is a structural diagram of the second end of the developing cartridge in the first embodiment of the present utility model;

[0058] Figure 5 This is an exploded view of the second end of the developing cartridge in the first embodiment of the present invention;

[0059] Figure 6 This is a schematic structural diagram of the bearing in the first embodiment of the present invention;

[0060] Figure 7 This is a schematic structural diagram of the second protective cover in the first embodiment of the present utility model;

[0061] Figure 8 is a cross-sectional view of the second end of the developing cartridge in the first embodiment of the present invention;

[0062] Figure 9 This is a schematic structural diagram of the developing roller and the photosensitive drum in contact when no separation force is received in the first embodiment of the present invention;

[0063] Figure 10 This is a schematic structural diagram of the separation of the developing roller and the photosensitive drum when receiving the separation force in the first embodiment of the present invention;

[0064] Figure 11 This is an exploded view of another structure of the separation component in the first embodiment of the present invention;

[0065] Figure 12 This is a structural diagram of the developing cartridge in the second embodiment of the present utility model;

[0066] Figure 13This is an exploded view of the developing cartridge body in the second embodiment of the present utility model;

[0067] Figure 14 This is a schematic structural diagram of the first protective cover in the second embodiment of the present utility model;

[0068] Figure 15 This is a structural diagram of the first protective cover in the second embodiment of the present invention from another angle;

[0069] Figure 16 It is a partial schematic diagram of the developing cartridge in the second embodiment of the present utility model;

[0070] Figure 17 This is an exploded view of the first end of the developing cartridge in the second embodiment of the present utility model;

[0071] Figure 18 This is a structural diagram of the force-applying member in the second embodiment of the present utility model;

[0072] Figure 19 This is a partial schematic diagram of the separation component in the second embodiment of the present utility model;

[0073] Figure 20 is a cross-sectional view of the first end of the developing cartridge in the second embodiment of the present utility model;

[0074] Figure 21 This is a schematic structural diagram of the developing cartridge receiving the separation force in the second embodiment of the present utility model;

[0075] Figure 22 This is a structural schematic diagram of the separation of the developing roller and the photosensitive drum when receiving the separation force in the second embodiment of the present invention;

[0076] Figure 23 This is a schematic structural diagram of the developing cartridge in the third embodiment of the present invention;

[0077] Figure 24 This is a schematic structural diagram of the second end of the developing cartridge in the third embodiment of the present utility model;

[0078] Figure 25 This is a schematic structural diagram of the separation of the developing roller and the photosensitive drum in the third embodiment of the present invention;

[0079] Figure 26 This is a schematic structural diagram of another structure of the separation member in the third embodiment of the present invention;

[0080] Figure 27 This is a schematic structural diagram of a developing cartridge in a fourth embodiment of the present invention;

[0081] Figure 28 This is a schematic structural diagram of the developing cartridge receiving the separation force in the fourth embodiment of the present utility model;

[0082] Figure 29 This is a schematic structural diagram of a developing cartridge in a fifth embodiment of the present invention;

[0083] Figure 30 This is an exploded view of the second end of the developing cartridge in the fifth embodiment of the present invention;

[0084] Figure 31 This is a schematic structural diagram of a developing cartridge in a sixth embodiment of the present invention;

[0085] Figure 32 This is an exploded view of the elastic component in the sixth embodiment of the present utility model;

[0086] Figure 33 This is a structural diagram of the developer cartridge being mounted to the drum assembly in the sixth embodiment of the present invention;

[0087] Figure 34 This is a structural diagram of the second end of the developing cartridge in the seventh embodiment of the present utility model;

[0088] Figure 35 This is an exploded view of the second end of the developing cartridge in the seventh embodiment of the present utility model;

[0089] Figure 36 This is a schematic structural diagram of the second protective cover in the seventh embodiment of the present utility model;

[0090] Figure 37 This is a schematic structural diagram of the separation assembly in the seventh embodiment of the present utility model;

[0091] Figure 38 This is a structural diagram of a seventh embodiment of the present invention in which the developing cartridge is mounted on the drum assembly and does not receive a separation force;

[0092] Figure 39 This is a schematic structural diagram of the developing roller and the photosensitive drum in contact when no separation force is received in the seventh embodiment of the present invention;

[0093] Figure 40 This is a structural diagram of the developing cartridge in Embodiment 7 of the present invention, which is mounted on the drum assembly and receives the separation force;

[0094] Figure 41 This is a structural schematic diagram of the separation of the developing roller and the photosensitive drum when receiving the separation force in the seventh embodiment of the present invention;

[0095] Figure 42 This is an exploded view of the second end of the developing cartridge in the eighth embodiment of the present utility model;

[0096] Figure 43 This is a structural diagram of the second protective cover in the eighth embodiment of the present utility model;

[0097] Figure 44 This is a schematic structural diagram of the housing in the eighth embodiment of the present utility model;

[0098] Figure 45 This is a cross-sectional view of the separation component in the eighth embodiment of the present invention, where the separation component is located on the second protective cover and does not receive the separation force;

[0099] Figure 46 This is a cross-sectional view of the separation component in the eighth embodiment of the present invention, which is located on the second protective cover and receives the separation force;

[0100] Figure 47 This is a schematic structural diagram of an eighth embodiment of the present invention in which the developing cartridge is mounted on the drum assembly and does not receive a separation force;

[0101] Figure 48 This is a schematic structural diagram of the developing roller and the photosensitive drum in contact when no separation force is received in the eighth embodiment of the present invention;

[0102] Figure 49 This is a schematic structural diagram of the separation of the developing roller and the photosensitive drum when receiving the separation force in the eighth embodiment of the present invention;

[0103] Figure 50 This is a schematic structural diagram of the developing cartridge in the eighth embodiment of the present invention, which is mounted on the drum assembly and receives the separation force;

[0104] Figure 51 This is a schematic structural diagram of the second end of the developing cartridge in the ninth embodiment of the present invention;

[0105] Figure 52 This is a schematic structural diagram of a ninth embodiment of the present invention in which the second end of the developing cartridge hides the second protective cover;

[0106] Figure 53 This is an exploded view of the second end of the developing cartridge in the ninth embodiment of the present utility model;

[0107] Figure 54 This is a structural diagram of a bearing in a ninth embodiment of the present utility model;

[0108] Figure 55 This is a schematic structural diagram of the push member in the ninth embodiment of the present utility model;

[0109] Figure 56 This is a structural diagram of a ninth embodiment of the present invention in which the developing cartridge is mounted on the drum assembly and does not receive a separation force;

[0110] Figure 57 This is a structural diagram of the abutment member retracting to the third mounting portion when no separation force is received in the ninth embodiment of the present invention;

[0111] Figure 58 This is a structural diagram of the force-applying member abutting against the third pushing portion when the separation force is not received in the ninth embodiment of the present invention.

[0112] Figure 59 This is a schematic structural diagram of the developing roller and the photosensitive drum in contact when no separation force is received in the ninth embodiment of the present invention;

[0113] Figure 60 This is a schematic structural diagram of a ninth embodiment of the present invention in which the developing cartridge is mounted on the drum assembly and receives a separating force;

[0114] Figure 61 This is a structural diagram of the abutment member extending out of the third mounting portion when receiving the separation force in the ninth embodiment of the present invention;

[0115] Figure 62 This is a structural diagram of the force-applying member abutting against the fourth pushing portion when receiving the separation force in the ninth embodiment of the present invention.

[0116] Figure 63 This is a schematic structural diagram of the separation of the developing roller and the photosensitive drum when receiving the separation force in the ninth embodiment of the present invention;

[0117] Figure 64 This is a schematic structural diagram of the second end of the developing cartridge in the tenth embodiment of the present utility model;

[0118] Figure 65 This is an exploded view of the second end of the developing cartridge in the tenth embodiment of the present utility model;

[0119] Figure 66 This is a schematic structural diagram of the second end of the developing cartridge in the eleventh embodiment of the present utility model;

[0120] Figure 67 This is an exploded view of the second end of the developing cartridge in the eleventh embodiment of the present utility model;

[0121] Figure 68 It is a structural diagram of the bearing in the eleventh embodiment of the present utility model. DETAILED DESCRIPTION

[0122] 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.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] In the following descriptions of directions, perpendicular to Figure 1 When viewed from the middle of the paper, Figure 1 The left side of the paper is left. Figure 1 The right side of the middle paper is right, Figure 1 The upper side of the paper is the top. Figure 1 The lower side of the middle paper is the bottom. Figure 1 The near side of the middle paper is the front, Figure 1 The far side in the middle paper is the back. The left-right direction is an embodiment of the first direction, the front-back direction is an embodiment of the second direction, and the up-down direction is an embodiment of the third direction.

[0128] Example 1

[0129] like Figures 1-10 As shown, this embodiment provides a developing box 1, which is detachably mounted on a drum assembly of an image forming device. The image forming device is provided with a separation force output member 99, and the drum assembly is provided with a frame 91 for carrying the developing box 1 and a photosensitive drum 92 for forming an electrostatic latent image. The developing box 1 includes a box body 10, a developing assembly, a transmission assembly, a separation assembly, and an identification assembly.

[0130] like Figure 1 As shown, the box body 10 has a chamber for accommodating developer. The box body 1 has a first end 11 and a second end 12 oppositely disposed in a first direction. The box body 10 has a third end 13 and a fourth end 14 oppositely disposed in a second direction. The box body 10 has a fifth end 15 and a sixth end oppositely disposed in a third direction. The fifth end 15 is provided with a friction portion 151, which is provided with a plurality of ribs extending in the first direction. The friction portion 151 is used to facilitate the user to pick up the developer cartridge 1. The transmission assembly is located at the first end 11 of the box body 10 and is used to receive the driving force output by the image forming device to drive the developing assembly in the developer cartridge 1. A first protective cover 111 is detachably fixedly mounted on the first end 11 of the box body 1. The first protective cover 111 at least partially covers the transmission assembly and is used to protect the transmission assembly.

[0131] like Figure 1 and Figure 2 As shown, the developer cartridge 1 includes an identification component located at the first end 11 of the cartridge body 10. In this embodiment, the identification component includes a bracket 112 and a storage medium 113. In other embodiments, the identification component may only include the storage medium 113. The bracket 112 is detachably mounted on the first end 11, specifically, the bracket 112 is detachably mounted on the first protective cover 111, and the bracket 112 is movable relative to the cartridge body 10. The storage medium 113 is detachably mounted on the bracket 112 and can follow the bracket 112 in movement relative to the cartridge body 10. In some embodiments, the storage medium 113 can be directly mounted on the first protective cover 111. The storage medium 113 is used to store information about the developer cartridge 1. When the developer cartridge 1 is installed in an image forming device, the storage medium 113 transmits the information to the image forming device, allowing the developer cartridge 1 to be identified by the image forming device. The storage medium 113 also includes an electrical contact surface electrically connected thereto. The storage medium 113 and the electrical contact surface can be integrally formed or electrically connected separately via an intermediate component. In some embodiments, the bracket 112 may not move relative to the box body 10, thereby preventing the storage medium 113 from moving relative to the box body 10. The storage medium 113 may be a chip, and the electrical contact surface may be a terminal.

[0132] like Figure 1As shown, the developing assembly includes a developing roller 131, a stirring frame (not shown), and a powder feed roller (not shown). The developing roller 131, the stirring frame, and the powder feed roller are all rotatably mounted within the accommodating chamber between the first end 11 and the second end 12. The rotational axes of the developing roller 131, the stirring frame, and the powder feed roller all extend in a first direction. The powder feed roller is positioned adjacent to the developing roller 131, and in a second direction, the developing roller 131 is closer to the third end 13 of the housing 1 than the powder feed roller. The stirring frame is used to stir the developer within the developing chamber, causing friction in the developer to prevent clumping. The developing roller 131 is used to contact the photosensitive drum of the drum assembly to transfer the developer to the photosensitive drum. The developing assembly also includes a powder knife 132, which is positioned adjacent to the developing roller 131 and extends in the first direction. The powder knife 132 is used to contact the developing roller 131 to control the thickness of the developer layer on the developing roller 131.

[0133] like Figure 1 and Figure 2 As shown, the first end 11 of the cartridge body 10 is provided with a first protective cover 111 and an assembly 114. Assembly 114 can be mounted to the cartridge body 10 by being attached to the first protective cover 111, or it can be mounted directly to the cartridge body 10. Assembly 114 includes a first guide portion 1141 and a first urging portion 1142. The first guide portion 1141 is used to guide the developer cartridge 1 to be smoothly installed on the drum assembly when the developer cartridge 1 is installed. The first urging portion 1142 is used to receive the urging force applied by the drum assembly, thereby ensuring close contact between the developer roller 131 and the photosensitive drum. In the third direction, the first guide portion 1141 is located above the first urging portion 1142, and in the second direction, the first guide portion 1141 is located in front of the first urging portion 1142. A second guide portion 121 is provided at the second end 12, which functions similarly to the first guide portion 1141. The first guide portion 1141 and the second guide portion 121 respectively support one end of the developer roller. The urging force applying assembly includes a first urging portion 1142 , and the urging force applying assembly is used to receive the urging force applied by the force applying assembly of the drum assembly, so that the developing roller 131 and the photosensitive drum are in close contact.

[0134] like Figure 3 As shown, the transmission assembly is disposed at the first end 11 of the housing 10. The transmission assembly includes a driving portion, which includes a power receiving portion 40 and a driving gear 44. The power receiving portion 40 and the driving gear 44 can be integrally formed or assembled. In the first direction, the driving gear 44 is closer to the first end 11 than the power receiving portion 40. The power receiving portion 40 is exposed through a through hole in the first protective cover 111. The power receiving portion 40 is a groove that is concave inward along the first direction toward the first end 11. A driven protrusion is disposed in the groove. The power receiving portion 40 is used to receive the driving force output by the image forming device, thereby driving the driving gear 44 to rotate.

[0135] The transmission assembly also includes a developing gear 41, a powder feed gear 42, a first idler gear 43, a stirring gear 45, and a second idler gear. The powder feed gear 42 is meshed with the drive gear 44 to receive the driving force and rotate. The first idler gear 43 is meshed with both the powder feed gear 42 and the developing gear 41 to receive the driving force and transmit the driving force to the developing gear 41. The second idler gear includes a large-diameter second idler gear 461 and a small-diameter second idler gear 462. The large-diameter second idler gear 461 is farther from the first end 11 than the small-diameter second idler gear 462 in the first direction. The large-diameter second idler gear 461 is meshed with the drive gear 44 to receive the driving force and rotate. The small-diameter second idler gear 462 is meshed with the stirring gear 45 to cause the stirring gear 45 to rotate. In the second direction, the rotation axis of the stirring gear 45 is located between the rotation axis of the second idler gear and the rotation axis of the drive gear 44. The developing gear 41 is mounted on the end of the developing roller 131 located at the first end 11 and drives the developing roller 131 to rotate upon receiving a driving force. The powder feeding gear 42 is mounted on the end of the powder feeding roller located at the first end 11 and drives the powder feeding roller to rotate upon receiving a driving force. The stirring gear 45 is mounted on the end of the stirring frame located at the first end 11 and drives the stirring frame to rotate upon receiving a driving force. This embodiment does not limit the number of gears in the transmission assembly and the meshing relationship thereof, and these can be configured according to actual needs.

[0136] like Figure 4-Figure 6As shown, the second end 12 of the cartridge body 10 is provided with a bearing 122. Bearing 122 is used to support the developing roller 131 and the powder feed roller at one end of the second end 12 in the first direction. Bearing 122 includes a second urging portion 123, a second force-bearing surface 124, a first hole 125, a first support column 126, a first upper guide 127, and a first lower guide 128. These features may be integrally formed or assembled separately. The second urging portion 123 functions similarly to the first urging portion 1142, receiving the urging force applied by the drum assembly to maintain close contact between the developing roller 131 and the photosensitive drum. The urging force applying assembly includes the second urging portion 123. The second force-bearing surface 124 is specifically an inclined or curved surface, preferably an inclined surface in this embodiment. It extends in a direction intersecting the first and second directions, specifically extending leftward in the first direction and rearward in the second direction. In the first direction, its initial end is closer to the second end 12 than its final end, and in the second direction, its initial end is closer to the developing roller 131 than its final end. The first hole 125 is a through hole or a blind hole, and is used to support the developing roller 131 at one end of the second end 12 in the first direction. The first support column 126 extends along the first direction away from the second end 12. In this embodiment, the first support column 126 is specifically a cylinder, but in other embodiments, it can be other shapes such as a rectangular column. The first upper guide 127 and the first lower guide 128 are through holes or blind holes in the third direction. The extension direction of the first upper guide 127 and the first lower guide 128 is parallel to the second direction or intersects at a certain angle. In the third direction, the second force-bearing surface 124 is located between the first upper guide 127 and the first lower guide 128, and the first upper guide 127 and the first lower guide 128 are symmetrically arranged with respect to the second force-bearing surface 124.

[0137] like Figure 4 As shown, the second end 12 is further provided with a locked member 129 , which is locked by a locking member on the drum assembly when the developing cartridge 1 is mounted on the drum assembly to prevent the developing cartridge 1 from being separated from the drum assembly.

[0138] like Figure 5-Figure 7As shown, the second end 12 further includes a second protective cover 33, which is movably mounted on the bearing 122 or on the housing 10. The second protective cover 33 includes a first strip-shaped hole 331, a second strip-shaped hole 332, a third strip-shaped hole 333, a first connecting protrusion 334, a second connecting protrusion 335, a second support post 336, a second upper guide rail 337, and a second lower guide rail 338. The first strip-shaped hole 331 is a through hole extending along a first direction through the second protective cover 33. In other embodiments, it can also be a blind hole. The first strip-shaped hole 331 extends parallel to the second direction or intersects at a certain angle. The first support post 126 is inserted into the first strip-shaped hole 331, and the two can move relative to each other. Optionally, multiple support posts and strip-shaped holes can be provided on the bearing 122 and the second protective cover 33 to flexibly cooperate, allowing the second protective cover 33 to be more stably mounted on the bearing 122 and move relative to the bearing 122. The first connecting protrusion 334 protrudes upward in the third direction, and the second connecting protrusion 335 protrudes downward in the third direction. These protrusions are located at opposite ends of the protective cover 33 in the third direction. The first connecting protrusion 334 is inserted into the first upper guide 127 of the bearing 122 and can slide relative to the first upper guide 127 along the direction in which the first upper guide 127 extends. The second connecting protrusion 335 is inserted into the first lower guide 128 and can slide relative to the first lower guide 128 along the direction in which the first lower guide 128 extends. The second and third strip-shaped holes 332 and 333 are both through holes or blind holes extending through the second protective cover 33 in the third direction. In this embodiment, through holes are preferred. Both extend in the first direction and are located at opposite ends of the protective cover 33 in the third direction. The second supporting column 336 extends in the first direction toward the second end 12. In this embodiment, the second supporting column 336 is a cylinder; in other embodiments, it can be a rectangular column or other shape. The extension direction of the second upper guide rail 337 and the second lower guide rail 338 intersects with the second direction. In other embodiments, the extension direction may be parallel to the second direction. The second support column 336 is located between the second upper guide rail 337 and the second lower guide rail 338.

[0139] like Figure 4 and Figure 5As shown, the separation assembly is located at the second end 12. In other embodiments, the separation assembly may also be located at the first end 11, or the separation assembly is only provided at the second end 12 or the first end 11. The separation assembly includes a force-receiving member 31 and a force-applying member 32. The force-receiving member 31 and the force-applying member 32 are movable relative to the box body 10. The force-receiving member 31 is used to receive the separation force applied by the image forming device, and the force-applying member 32 is used to apply the separation force to the box body 10. The force-bearing member 31 is generally strip-shaped and includes a first force-bearing portion 311, a first force-applying portion 312, and a fourth strip-shaped hole 313. The fourth strip-shaped hole 313 is a through hole or a blind hole that extends through the force-bearing member 31 in the first direction and extends in the same direction as the second upper guide rail 337 and the second lower guide rail 338. The second support column 336 is inserted into the fourth strip-shaped hole 313 so that the second protective cover 33 supports the force-bearing member 31. The force-bearing member 31 is slidably positioned between the second upper guide rail 337 and the second lower guide rail 338. In the second direction, the first force-bearing portion 311 is further away from the developing roller 131 than the first force-applying portion 312. The first force-bearing portion 311 is configured to receive a separation force applied by the image forming device. Upon receiving the separation force, the force-bearing member 31 slides relative to the housing 10 in the direction in which the second upper guide rail 337 and the second lower guide rail 338 extend. The first force-applying portion 312 has a first force-applying surface 312. The first force-applying surface 312 can be an inclined surface or an arcuate surface. In this embodiment, the first force-applying surface 312 is preferably an arcuate surface. The first force-applying surface 312 extends forward along the second direction and extends leftward along the first direction. That is, in the first direction, the starting end of the extension is closer to the second end 12 than the end, and in the second direction, the starting end is farther away from the developing roller 131 than the end. In other embodiments, the force-bearing member 31 can also be directly slidably connected to the box body.

[0140] The force-applying member 32 is slidably mounted on the second protective cover 33. Specifically, a third connecting protrusion 321 and a fourth connecting protrusion 322 are provided at both ends of the force-applying member 32 in the third direction. The third connecting protrusion 321 protrudes upward along the third direction, and the fourth connecting protrusion 322 protrudes downward along the third direction. The third connecting protrusion 321 is inserted into the second strip hole 332 and slides along the extension direction of the second strip hole 332. The fourth connecting protrusion 322 is inserted into the third strip hole 333 and slides along the extension direction of the third strip hole 333. That is, the force-applying member 32 can slide along the first direction under the support of the second protective cover 33. In this embodiment, the force-applying member 32 is roughly cylindrical and has a cylindrical surface 323. When the force-receiving member 31 slides relative to the box body 10 under the separation force, the first force-applying portion 312 abuts against the cylindrical surface 323, so that the force-applying member 32 slides along the first direction toward the second end 12, that is, the cylindrical surface 323 can be regarded as the first force-receiving surface, and when the force-applying member 32 slides along the first direction, the cylindrical surface 323 abuts against the second force-receiving surface 124, that is, the cylindrical surface 323 can also be regarded as the second force-applying surface.

[0141] like Figure 9 and Figure 10 As shown, a first abutted portion 911 is provided on the drum assembly frame 91. When the developing cartridge 1 is mounted on the drum assembly, the second protective cover 33 of the developing cartridge 1 abuts against the first abutted portion 911 so that the second protective cover 33 cannot move forward in the second direction.

[0142] When the developer cartridge 1 is mounted on the drum assembly, and the two are mounted together in the image forming device, the image forming device recognizes the developer cartridge 1 by reading the information in the storage medium 113, and the developer cartridge 1 can operate normally in the image forming device. When the image forming device issues a separation command, the separation force output member 99 in the image forming device applies a separation force to the force-receiving member 31, causing the force-receiving member 31 to slide toward the developing roller 131 under the support of the second protective cover 33. The force-receiving member 31 abuts the force-applying member 32, causing the force-applying member 32 to slide toward the second end 12 (slide rightward). The force-applying member 32 abuts the second force-receiving surface 124, causing the bearing 122 to drive the cartridge body 10 to overcome the thrust received by the thrust-applying assembly and move away from the photosensitive drum. At this time, the second protective cover 33 and the cartridge body 10 are in a relative motion state, that is, the cartridge body 10 moves backward relative to the frame 91, and the second protective cover 33 does not move relative to the frame 91.

[0143] The specific separation process is as follows: during the sliding process of the force-bearing member 31, the extended end of the first force-applying surface 312 first abuts against the cylindrical surface 323 of the force-bearing member 32. As the force-bearing member 31 continues to slide, the first force-applying surface 312 gradually changes from abutting the end to abutting the starting end. During the abutment transition process, the force-bearing member 32 slides toward the second end 12 (slides to the right), and the cylindrical surface 323 simultaneously abuts against the second force-bearing surface 124. The cylindrical surface 323 first abuts against the extended end of the second force-bearing surface 124. As the force-bearing member 32 continues to slide, the cylindrical surface 323 finally abuts against the extended starting end of the second force-bearing surface 124. During this process, the second force-bearing surface 124 drives the developer cartridge 1 in a direction away from the photosensitive drum 92. That is, during the separation process, the force-bearing member 32 only moves in the first direction, and the force-bearing member 31 and the cartridge body 10 both have displacement in the second direction. In other embodiments, the movement direction of the force-bearing member 32 can also be intersecting with the first direction.

[0144] When the developing roller 131 and the photosensitive drum need to contact again, the separation force output member 99 no longer applies a separation force to the force receiving member 31. The first forcing portion 1142 and the second forcing portion 123 receive the forcing force applied by the drum assembly, causing the cartridge body 10 to move toward the photosensitive drum 92. The second force-bearing surface 124 applies a reaction force to the force-applying member 32, causing the force-applying member 32 to slide (move to the left) along the first direction away from the second end 12, and abuts against the force-applying member 31, causing the force-applying member 31 to slide in a direction away from the developing roller 131. The separation assembly is reset to wait for the next separation force. In some embodiments, an elastic member may be added. When the separation assembly receives the separation force, the elastic member is compressed to accumulate elastic potential energy. When the separation assembly no longer receives the separation force, the elastic member uses its own elastic potential energy to help the separation assembly move in the opposite direction to reset.

[0145] like Figure 11 As shown, in some embodiments, the force-applying member 32 can also be block-shaped, which has a first force-applying surface 3331 and a second force-applying surface 3332 relatively arranged in the first direction. In the first direction, the first force-applying surface 3331 is farther away from the second end 12 than the second force-applying surface 3332. The first force-applying surface 3331 and the second force-applying surface 3332 can be arc surfaces or inclined surfaces or end surfaces. The first force-applying surface 3331 is used to abut against the first force-applying surface 312 to make the force-applying member 32 move along the first direction, and the second force-applying surface 3332 is used to abut against the second force-applying surface 124 to transmit the separation force to the box body 10. In some embodiments, the first force-bearing surface 3331 of the force-applying member 32 is configured as an inclined surface or an arc surface, which extends forward in the second direction and extends leftward in the first direction, that is, in the first direction, its extension starting end is closer to the second end 12 than the end, and in the second direction, its starting end is farther away from the developing roller 131 than the end. The first force-applying surface 312 of the force-bearing member 31 is configured as an end surface, which can also achieve the first force-applying surface abutting the first force-bearing surface and causing the force-applying member to move along the first direction toward the box body. In other words, if one of the first force-applying surface of the force-bearing member 31 and the first force-bearing surface of the force-applying member 32 has its extension starting end closer to the second end 12 than the end in the first direction, and its starting end is farther away from the developing roller 131 than the end in the second direction, the first force-applying surface abutting the first force-bearing surface and causing the force-applying member to move along the first direction toward the box body. This embodiment does not limit the specific shapes of the force-bearing member 31 and the force-applying member 32, and any shape that can achieve the above-mentioned function is sufficient. Similarly, one of the second force-applying surface and the second force-receiving surface of the force-applying member has its starting end in the first direction closer to the second end 12 than its end, and its starting end in the second direction closer to the developing roller 131 than its end, so that the second force-applying surface can abut against the second force-receiving surface and cause the box body to move away from the photosensitive drum in the second direction, thereby separating the developing roller from the photosensitive drum.

[0146] Example 2

[0147] Unless otherwise specified, the structure of the developing cartridge in this embodiment is the same as that in embodiment 1. The main difference between this embodiment and embodiment 1 is the placement of the separation component in this embodiment, which is located at the first end 11 .

[0148] like Figure 12-13 As shown, the box body 10 includes an upper box body 101 and a lower box body 102, which are assembled together by gluing or welding. The lower box body 102 is provided with a first guide rail 1021, a second guide rail 1022, and a fifth connecting protrusion 1023. The first guide rail 1021 and the second guide rail 1022 both extend in the second direction. In the third direction, the first guide rail 1021 is located above the second guide rail 1022. The first guide rail 1021 is provided with a first guide protrusion 10211, which protrudes downward in the third direction. The second guide rail 1022 is provided with a second guide protrusion 10221, which protrudes upward in the third direction. The fifth connecting protrusion 1023 is a cross-shaped protrusion protruding in the second direction, but can also be a protrusion of other shapes.

[0149] like Figure 12 、 Figure 14 and Figure 15 As shown, the first protective cover 111 is detachably mounted on the first end 11, and a mounting portion 116 is provided on the first protective cover 111. The mounting portion 116 is a through hole or a blind hole extending along the first direction. In this embodiment, the mounting portion 116 is preferably a circular through hole, and a first guide groove 1161 and a second guide groove 1162 are provided on its inner wall. The first guide groove 1161 and the second guide groove 1162 are curved or straight lines extending in the first direction toward the first end 11. In this embodiment, the first guide groove 1161 and the second guide groove 1162 are preferably curved guide grooves. The first guide groove 1161 and the second guide groove 1162 extend along the circumference of the mounting portion 116 while extending along the first direction toward the first end 11. If the extension direction of the first guide groove 1161 and the extension direction of the second guide groove 1162 are infinitely extended, the extension lines of the two may intersect, and the first guide groove 1161 and the second guide groove 1162 are matched. In other embodiments, one guide groove or multiple guide grooves may be provided in the mounting portion 116.

[0150] like Figure 17 As shown, the developing roller 131 includes a rubber portion 1311 and a roller shaft portion 1312. The rubber portion 1311 is sleeved on the roller shaft portion 1312. The rubber portion 1311 is used to absorb the developer and contact the photosensitive drum 92 to transfer the developer. The roller shaft portion 1312 is used to receive the driving force to make the developing roller 131 rotate.

[0151] like Figures 16-20As shown, in this embodiment, the separation assembly is disposed near the first end 11. In other embodiments, the separation assembly may also be disposed near the second end 12. The separation assembly includes a force-bearing member 35, a transmission member 47, and a force-applying member 36. The force-bearing member 35 is generally cylindrical and is slidably mounted on the mounting portion 116 of the first protective cover 111. The force-bearing member 35 includes a third guide protrusion 351, a fourth guide protrusion 352, and a force-bearing protrusion 353. The third guide protrusion 351 and the fourth guide protrusion 352 are protrusions that protrude radially outward from the force-bearing member 35. The third guide protrusion 351 is located within the first guide groove 1161, and the fourth guide protrusion 352 is located within the second guide groove 1162. The force-receiving protrusion 353 is a protrusion of the force-receiving member 35 that protrudes along the first direction away from the first end 11 (protruding to the right). The force-receiving protrusion 353 is used to receive external force and cause the force-receiving member 35 to move. Specifically, the force-receiving member 35 rotates along the first direction toward the first end 11 (moving to the left) via the third guide protrusion 351 and the fourth guide protrusion 352, respectively, along the extending directions of the first guide groove 1161 and the second guide groove 1162. The number of guide protrusions on the force-receiving member 35 matches the number of guide grooves in the mounting portion 116. To facilitate installation, the guide protrusions may have a certain degree of elasticity, so that when the guide protrusions are installed in the guide grooves, they will deform, allowing for smooth installation. In some embodiments, the force-bearing member 35 can only move along the first direction after being subjected to force and can not rotate without force. Specifically, the guide groove in the mounting portion 116 is a linear guide groove, and the force-bearing protrusion 353 of the force-bearing member 35 is provided with an inclined surface whose extension direction intersects with the second direction. The inclined surface is used to receive external force, and by receiving the external force in the form of the inclined surface, a force is obtained that can make the force-bearing member 35 move along the first direction.

[0152] In this embodiment, the transmission member 47 is in the shape of a hollow cylinder, and the developing gear 41 is fixedly mounted on the transmission member 47. The transmission member 47 and the developing gear 41 are formed integrally or separately. The transmission member 47 is fixedly mounted on the roller shaft portion 1312 of the developing roller 131 at one end of the first end 11 in the first direction through a "D"-shaped connection. After receiving the driving force, the developing gear 41 drives the transmission member 47 to rotate, thereby causing the transmission member 47 to drive the developing roller 131 to rotate. The transmission member 47 is in contact with the force-bearing member 35. After the force-bearing member 35 receives the force generated from the outside and rotates in the first direction, the transmission member 47 receives the force transmitted by the force-bearing member 35 and moves in the first direction relative to the roller shaft portion 1312 in the first direction. In some embodiments, the transmission member 47 can be of other shapes, as long as it can be moved in the first direction under the force.

[0153] The force-applying member 36 is located inside the lower housing 102 and includes a first sliding portion 361, a second sliding portion 362, a first abutting surface 363, and a sixth connecting protrusion 364. The first sliding portion 361 and the second sliding portion 362 are symmetrically arranged in the third direction. The first sliding portion 361 is provided with a third guide groove 3611 extending in the second direction, and the second sliding portion 362 is provided with a fourth guide groove (not shown) extending in the second direction. The first sliding portion 361 is mounted on the first guide rail 1021, with the first guide protrusion 10211 inserted into the third guide groove 3611. The second sliding portion 362 is mounted on the second guide rail 1022, with the second guide protrusion 10221 inserted into the fourth guide groove, so that the force-applying member 36 is slidably mounted on the housing 10. To facilitate installation, the first guide protrusion 10211 and the second guide protrusion 10221 may have a certain degree of elasticity. The first sliding portion 361 also includes an abutment end 3612 located at the front end of the force applying member 36 in the second direction and configured to contact the drum assembly. A U-shaped or V-shaped hollow portion is formed between the first and second sliding portions 361, 362 to provide clearance for the roller shaft portion 3112 of the developing roller 131. The first abutment surface 363 is an arcuate or inclined surface, preferably an inclined surface in this embodiment. It extends leftward in the first direction and rearward in the second direction. Specifically, in the first direction, its starting point is farther from the second end 12 than its ending point, and in the second direction, its starting point is farther from the fourth end 14 than its ending point. The sixth connecting protrusion 364 is a cross-shaped protrusion protruding in the second direction. The fifth connecting protrusion 1023 and the sixth connecting protrusion 364 are arranged facing each other. The force applying member 36 is slidable relative to the first and second guide rails 1021, 1022 in the second direction. The force applying member 36 has a retracted state when not sliding and an extended state after sliding relative to the box body 10. It is known that the front end of the second sliding portion 362 of the force applying member 36 can also serve as an abutting end to abut on the drum assembly.

[0154] The separation assembly further includes a stopper 37, a first elastic member 38, and a second elastic member 39. In this embodiment, the stopper 37 is cylindrical and has a through hole extending through the stopper 37 in the first direction to facilitate installation of the stopper 37 on the roller shaft portion 1312 of the developing roller 131. In other embodiments, the stopper 37 may also be a rectangular column or other shape. The stopper 37 is used to limit the sliding movement of the force-applying member 36 in the second direction. The cylindrical surface of the stopper 37 abuts against the first abutting surface 363 of the force-applying member 36.

[0155] The first elastic member 38 and the second elastic member 39 can be elastic media such as compression springs or sponges. In this embodiment, both the first elastic member 38 and the second elastic member 39 are compression springs. The first elastic member 38 is mounted on the roller shaft portion 1312 of the developing roller 131 and can be compressed or stretched in a first direction. One end of the first elastic member 38 in the first direction abuts the end surface of the rubber portion 1311 of the developing roller 131 or the end surface of a component fixed to the developing roller 131, and the other end abuts the end surface of the limiting member 37. The first elastic member 38 is compressed by the force applied by the limiting member 38 and accumulates elastic potential energy. The second elastic member 39 can be compressed or stretched in a second direction. One end of the first elastic member 38 in the second direction is connected to the fifth connecting protrusion 1023, and the other end is connected to the sixth connecting protrusion 364. The second elastic member 39 can be compressed by the force-applying member 36 and accumulate elastic potential energy.

[0156] like Figure 12 、 Figure 21 and Figure 22 As shown, the drum assembly is provided with a photosensitive drum 92, a second abutted portion 93, and a separating block 94. The developing cartridge 1 is mounted on the drum assembly, and the two are installed together in the image forming apparatus. When the developing cartridge 1 does not receive the separating force applied by the separating block 94 of the drum assembly, the first elastic member 38 is in an extended state or not fully compressed, the second elastic member 39 is abutted by the force-applying member 36 and is in a compressed state, accumulating elastic potential energy, the limiting member 37 abuts against the first abutting surface 363 of the force-applying member 36, and the force-applying member 36 is in a retracted state.

[0157] When the separation block 94 on the drum assembly applies a separation force to the force-bearing protrusion 353 of the force-bearing member 35, the force-bearing protrusion 353 is subjected to force to rotate the force-bearing member 35 along the first guide groove 1161 and the second guide groove 1162 and move in the direction close to the first end 11 in the first direction, and the force-bearing member 35 abuts the transmission member 47, so that the transmission member 47 moves to the left along the first direction, and the transmission member 47 abuts the limiting member 37 so that the limiting member 37 follows the transmission member 47 to move to the left along the first direction, thereby causing the first elastic member 38 to be compressed and accumulate elastic potential energy, and the limiting member 37 moves while relative to the first abutting surface 363 of the force-applying member 36 The movement abuts, and the abutment between the limiting member 37 and the first abutment surface 363 approaches from the starting end to the end end of the first abutment surface 363 along the extension direction of the first abutment surface 363. At the same time, the force-applying member 36 moves forward along the second direction relative to the box body 10 under the action of the elastic potential energy of the second elastic member 39. The abutment end 3612 of the force-applying member 36 abuts on the second abutted portion 93 of the drum assembly. The drum assembly applies a reaction force to the developing box 1 through the second elastic member 39, so that the developing box 1 overcomes the thrust received by the thrust-applying assembly and retreats, thereby separating the developing roller 131 from the photosensitive drum 92, and the force-applying member 36 is in an extended state.

[0158] When the developing roller 131 and the photosensitive drum 92 need to contact again, the separation block 94 no longer applies a separation force to the force-bearing member 35, and the first elastic member 38 applies elastic potential energy to the limiting member 37, so that the limiting member 37 moves to the right along the first direction, and the abutment between the limiting member 37 and the first abutting surface 363 moves from the end of the first abutting surface 363 to the starting end in a direction opposite to the extension direction of the first abutting surface 363, so that the force-applying member 36 moves backward along the second direction to retract into the box body 10, and the limiting member 37 applies a reaction force to the transmission member 47 so that the transmission member 47 slides to the right along the first direction, and the transmission member 47 drives the force-bearing member 35 to rotate and slide in the direction away from the first end 11, and the separation assembly is reset to prepare for the next separation.

[0159] Example 3

[0160] Unless otherwise specified, the structure of the developing box in this embodiment is the same as that in the first embodiment. The main difference between this embodiment and the first embodiment is the different arrangement of the separation components.

[0161] like Figure 23-25 As shown, in this embodiment, the separation component is a separation protrusion 51, which is fixedly mounted on the second end 12 of the box body 10, and the separation protrusion 51 extends along a first direction toward a direction away from the second end 12, and the separation protrusion 51 is used to receive the separation force output by the separation force output member 99 of the image forming device so that the developing box 1 moves relative to the drum assembly. In the second direction, the separation protrusion 51 is located behind the second guide portion 121, that is, in the second direction, the separation protrusion 51 is closer to the fourth end than the second guide portion. The drum assembly is provided with a guide groove 95 for guiding the second guide portion 121 of the developer box 1. When the separation protrusion 51 receives the separation force and transmits the separation force to the developer box 1, the second guide portion 121 abuts against the guide groove 95, and uses the abutment between the two as a fulcrum, so that the developer box 1 swings. In this embodiment, the developer box 1 at least partially moves backward in the second direction around the fulcrum (away from the photosensitive drum), and the part located to the right of the fulcrum in the first direction (that is, the separation protrusion 51 has a part that is farther away from the first end 11 of the box body than the second guide portion 121 in the first direction) swings toward the direction away from the photosensitive drum 92, and the part located to the left of the fulcrum swings toward the direction close to the photosensitive drum 92. The contact part of the developing roller 131 and the photosensitive drum 92 is entirely or partially located to the right of the fulcrum, so that the developing roller 131 is completely or partially separated from the photosensitive drum 92. It can be seen that the contact point between the second guide portion 121 and the guide groove 95 in the first direction is located between the contact point between the separation force output member 99 and the separation protrusion 51 and the contact point between the developing roller 131 and the photosensitive drum 92. The separation protrusion 51 can also be formed integrally with the housing 10. A portion of the separation protrusion 51 is further away from the first end 11 of the housing than the second guide portion 121 in the first direction, which facilitates the separation protrusion to receive the separation force.

[0162] like Figure 26 As shown, in other embodiments, in order to more effectively transmit the force received by the separation protrusion to the first end 11, the separation protrusion can be extended from the second end 12 to the first end 11 to form a separation rod 52. The separation rod 52 is provided with a force-bearing portion 521 located at the second end 12, and the force-bearing portion 521 is used to receive the separation force applied by the separation force output member 99. The separation rod 52 is also provided with a mounting hole 522. The box body 10 is provided with a mounting groove 105 for mounting the separation rod 52. The mounting groove 105 is provided with a mounting post 1051 extending along the third direction. The separation rod 52 is located in the mounting groove 105, and the mounting post 1051 is inserted into the mounting hole 522. The developer cartridge 1 is also provided with a fixing member 523, which is used to fix the separation rod 52 to the box body 10. When the separation rod 52 receives the separation force, the separation rod 52 moves together with the box body 10.

[0163] Example 4

[0164] Unless otherwise specified, the structure of the developing box in this embodiment is the same as that in the third embodiment. The main difference between this embodiment and the third embodiment lies in the different arrangement of the separation component, that is, the different structure of the separation protrusion.

[0165] like Figure 27 and Figure 28 As shown, in this embodiment, the separation protrusion 53 is fixedly mounted on the second end 12 of the box body 10. The separation protrusion 53 has a force-bearing surface 531. The force-bearing surface 531 can be an inclined surface or an arc surface. In this embodiment, the arc surface is preferably an arc surface. The extension direction of the force-bearing surface 531 intersects the second direction and the third direction. The starting end of the force-bearing surface 531 extending in the second direction is farther away from the developing roller 131 than the end, and the starting end extending in the third direction is closer to the fifth end 15 than the end. The force-bearing surface 531 is used to receive the separation force generated by the abutment of the separation force output member 99. The abutment between the separation force applied by the separation force output member 99 and the force-bearing surface 531 changes along the extension direction of the force-bearing surface 531. That is, when the separation force output member 99 outputs the separation force, the abutment between the force-bearing surface 531 and the force-bearing surface 531 moves from the upper end to the lower end of the force-bearing surface 531. The separation protrusion 53 can also be integrally formed with the box body.

[0166] The separation protrusion 53 receives the separation force and transmits the separation force to the box body 10 of the developer cartridge 1. The developer cartridge 1 swings with the contact point between the second guide portion 121 and the guide groove 95 as the swing fulcrum. The swing direction X intersects the third direction and the second direction. The swing direction X is the same as or similar to the extension direction of the force-bearing surface 531. In this embodiment, the developer cartridge 1 at least partially moves around the fulcrum along the third direction away from the photosensitive drum. Specifically, the portion of the developer cartridge 1 located behind the swing fulcrum in the second direction swings toward the photosensitive drum 92, that is, swings upward and forward, and the portion located in front of the swing fulcrum swings away from the photosensitive drum 92, that is, swings downward and backward. The contact point between the developing roller 131 and the photosensitive drum 92 is located in front of the swing fulcrum. Therefore, the developing roller 131 separates from the photosensitive drum during the swinging of the developer cartridge 1.

[0167] Example 5

[0168] Unless otherwise specified, the structure of the developing box in this embodiment is the same as that in the fourth embodiment. The main difference between this embodiment and the fourth embodiment is the different arrangement of the separation components.

[0169] like Figure 29 and Figure 30 As shown, the guide groove 95 on the drum assembly is provided with an upper groove portion 951 and a lower groove portion 952. The second guide portion 121 of the developer cartridge 1 is provided with a filling portion 1211. The filling portion 1211 is a notch on the second guide portion 121. The filling portion 1211 is used to install the third elastic member 58 in the separation assembly. The third elastic member 58 is made of an elastic medium such as rubber. When the developer cartridge 1 is installed on the drum assembly, the second guide portion 121 is located in the guide groove 95, and the third elastic member 58 is in contact with the lower groove portion 952.

[0170] A guide rail 120 is provided on the bearing 122. The guide rail 120 extends in a direction close to the developing roller 131. The extension direction is generally parallel to the second direction or at a certain angle to the second direction. The guide rail 120 is used to mount the movable member 57 of the separation assembly. The movable member 57 is movably mounted on the guide rail 120. The movable member 57 includes a force-receiving portion 571 and a force-applying portion 572. The force-receiving portion 571 is used to receive the separation force applied by the separation force output member 99 of the image forming device to cause the movable member 57 to move forward relative to the guide rail 120. The force-applying portion 572 is pointed, and the outer diameter of the force-applying portion 572 gradually increases from front to back. The force-applying portion 572 is used to be inserted between the second guide portion 121 and the upper groove portion 951, so that the distance between the second guide portion 121 and the upper groove portion 951 gradually increases. Since the force-applying portion 572 increases the distance between the second guide portion 121 and the upper groove portion 951, the developing box 1 gradually moves in the direction away from the photosensitive drum 92, and when the developing box 1 moves, the third elastic member 58 abuts against the lower groove portion 952, causing the third elastic member 58 to deform. After the deformation, the third elastic member 58 gradually disengages from the lower groove portion 952 to provide more space for the force-applying portion 572 to be further inserted between the second guide portion 121 and the upper groove portion 951, thereby causing the developing box 1 to move further away from the photosensitive drum 92. When the moving member 57 stops moving, the distance between the second guide portion 121 and the upper groove portion 951 no longer changes, the third elastic member 58 at least partially disengages from the lower groove portion 952, and the developing roller 131 is separated from the photosensitive drum 92. In some embodiments, the third elastic member 58 may not disengage from the lower groove portion 952. The third elastic member 58 abuts against the lower groove portion 952, causing severe deformation, thereby providing sufficient space for the developing cartridge 1 to move away from the photosensitive drum 92.

[0171] When the developing roller 131 needs to contact the photosensitive drum 92 again, the separation force output member 99 cancels the contact with the moving member 57. Under the action of the forced pushing force on the developing box 1, the developing box 1 moves in the direction close to the photosensitive drum 92, and the moving member 57 moves in the opposite direction to exit between the second guide portion 121 and the upper groove portion 951. If the forced pushing force received by the forced pushing force applying assembly is not enough to make the moving member 57 move in the opposite direction to exit between the second guide portion 121 and the upper groove portion 951, a fourth elastic member 59 can be provided. The fourth elastic member 59 can be compressed or stretched along the moving direction of the moving member 57. A sleeve portion 573 is provided on the moving member 57, and the fourth elastic member 59 is sleeved on the sleeve portion 573. When the moving member 57 moves due to the separation force applied by the separation force output member 99, the fourth elastic member 59 is compressed to accumulate elastic potential energy. When the separation force disappears, the fourth elastic member 59 releases the elastic potential energy to make the moving member 57 move in the opposite direction to exit between the second guide portion 121 and the upper groove portion 951.

[0172] Example 6

[0173] Unless otherwise specified, the structure of the developing box in this embodiment is the same as that in Example 1. The main difference between this embodiment and Example 1 is that no separation component is provided, and no thrust applying component is provided at the first end 11 and the second end 12 of the box body 10.

[0174] like Figure 31-33 As shown, the sixth end 16 of the cartridge body 10 is provided with a first elastic component 55 and a second elastic component 56. The first elastic component 55 and the second elastic component 56 are arranged along a first direction. In the first direction, the first elastic component 55 is closer to the first end 11 than the second elastic component 56. In the second direction, the power receiving member 40 is located between the developing roller 131 and the first elastic component 55. The first elastic component includes a first mounting portion 551, a fifth elastic member 552, and a first abutting member 553. The first mounting portion 551 is a groove in the third direction. The first mounting portion 551 can be formed by directly recessing the cartridge body 10 or by being mounted on the cartridge body 10. The first abutting member 553 is movably mounted on the first mounting portion 551. The fifth elastic member 552 is located within the first mounting portion 551. The first elastic member 551 is an elastic medium such as a compression spring. One end of the fifth elastic member 552 abuts the first abutting member 553, and the other end abuts the first mounting portion 551. The second elastic assembly 56 includes a second mounting portion 561, a sixth elastic member 562, and a second abutting member 563. In this embodiment, the first elastic assembly 55 and the second elastic assembly 56 have the same structure, so the second elastic assembly 56 will not be described in detail. In some embodiments, only a single elastic assembly or multiple elastic assemblies may be provided. When the developer cartridge 1 is mounted on the drum assembly, the first elastic assembly 55 and the second elastic assembly 56 contact the drum assembly frame 91.

[0175] When the developing cartridge 1 is mounted on the drum assembly and the two are mounted together in the image forming device, when the power receiving member 40 does not receive the power output by the image forming device, the developing roller 131 is not in contact with or is not in full contact with the photosensitive drum 92. When the power receiving member 40 receives the driving force output by the image forming device, the driving force will generate a clockwise rotation A (in the direction of the image forming device) on the developing cartridge 1. Figure 33 The torque force (observation angle) causes the developer cartridge 1 to swing with the first elastic component 55 and the second elastic component 56 as support points. The first abutment 553 and the second abutment 563 move relative to the first mounting portion 551 and the second mounting portion 561, respectively. The fifth elastic member 552 and the sixth elastic member 562 are compressed and accumulate elastic potential energy. In the second direction, the portion of the developer cartridge 1 behind the fifth elastic member 552 and the sixth elastic member 562 swings downward relative to the drum assembly, while the portion of the developer cartridge 1 in front of the fifth elastic member 552 and the sixth elastic member 562 swings upward relative to the drum assembly, causing the developing roller 131 to contact the photosensitive drum 92.

[0176] When the image forming device issues a separation instruction to separate the developing roller 131 and the photosensitive drum 92, the image forming device stops outputting driving force to the developing box 1, the torque force disappears, the fifth elastic member 552 and the sixth elastic member 562 release the elastic potential energy to make the developing box 1 swing in the opposite direction, and the developing roller 131 separates from the photosensitive drum 92.

[0177] Example 7

[0178] Unless otherwise specified, the structure of the developing box in this embodiment is the same as that in the first embodiment. The main difference between this embodiment and the first embodiment is the different arrangement of the separation components.

[0179] like Figure 34-36 As shown, the second end 12 also includes a second protective cover 33a, which is detachably mounted on the box body 10, and the second protective cover 33a includes a first mounting hole 33a1, a first mounting guide rail 33a2 and a second mounting guide rail 33a3. The first mounting guide rail 33a2 and the second mounting guide rail 33a3 extend in a direction close to the developing roller 131, and the extending direction thereof intersects with the second direction and the third direction. In the first direction, the first mounting guide rail 33a2 is farther away from the second end 12 than the second mounting guide rail 33a3, and the size of the second mounting guide rail 33a3 in the third direction is larger than the size of the first mounting guide rail 33a2 in the third direction.

[0180] like Figures 34-37 As shown, the separation assembly includes a force-bearing member 31a and a force-applying member. The force-bearing member 31a is movably mounted on the second protective cover 33a through a first mounting hole 33a1. The force-bearing member 31a includes a first force-bearing surface 31a1, a second force-bearing surface 31a2, a first force-applying surface 31a3, a transition surface 31a4, and a second force-applying surface 31a5. The first force-bearing surface 31a1 and the second force-bearing surface 31a2 are configured to receive the separation force applied by the separation force output member 99 of the image forming device. The first force-bearing surface 31a1 and the second force-bearing surface 31a2 are connected to each other with a certain angle therebetween. Furthermore, the angle is greater than 90°. The first force-bearing surface 31a1 extends forward along the second direction and upward along the third direction. The second force-bearing surface 31a2 extends forward along the second direction and downward along the third direction. The transition surface 31a4 connects the first force surface 31a3 and the second force surface 31a5. The transition surface 31a4 is inclined relative to the first force surface 31a3 and the second force surface 31a5. The first force surface 31a3 and the second force surface 31a5 are roughly parallel and extend along the third direction. In the second direction, the second force surface 31a5 is closer to the developing roller 131 than the first force surface 31a3.

[0181] like Figure 35 and Figure 37As shown, the force-applying member includes a housing 36a, a third abutting member 36b, and a seventh elastic member 36c. The third abutting member 36b and the seventh elastic member 36c are movably supported by the housing 36a. The housing 36a includes an abutted end 36a1, a guide rail portion 36a2, and a connecting protrusion 36a3. The abutted end 36a1 is located at the rear end of the housing in the second direction. The abutted end 36a1 is abutted by the first force-applying surface 31a3, the transition surface 31a4, and the second force-applying surface 31a5 of the force-receiving member 31a, thereby enabling movement of the housing 36a relative to the cartridge body 10. The guide rail portion 36a2 is a semicircular groove extending in a direction toward the developing roller 131, in the same direction as the second mounting guide rail 33a3 of the second protective cover 33a. The connecting protrusion 36a3 is a protrusion located within the guide rail portion 36a2 and disposed proximate to the abutted end 36a1 in the second direction. The housing 36a is movably supported by the second mounting rail 33a3.

[0182] The third abutment member 36b includes a first guide portion 36b1, a second guide portion 36b2, and an abutment portion 36b3. The first guide portion 36b1 is a block-shaped structure that mates with the first mounting rail 33a2 and is slidably positioned within the first mounting rail 33a2. The second guide portion 36b2 mates with the guide rail portion 36a2 and is a semi-cylindrical protrusion that protrudes toward the second end 12. The second guide portion 36b2 is movably mounted within the guide rail portion 36a2, and both the first guide portion 36b2 and the second guide portion 36b2 extend in the same direction as the second mounting rail 33a3. The abutment portion 36b3 is the end of the third abutment member 36b that is distal to the connecting protrusion 36a3 and is configured to abut the drum assembly. The seventh elastic member 36c is located in the guide rail portion 36a2, with one end connected to the connecting protrusion 36a3 and the other end abutting or fixedly connected to the end of the third abutting member 36b away from the developing roller 131. The seventh elastic member 36c is an elastic medium similar to a compression spring or sponge.

[0183] like Figures 38-41As shown, the developer cartridge 1 is mounted on the drum assembly, and the two can be mounted together in an image forming apparatus. When the separation force output member 99 in the image forming apparatus does not apply a separation force to the developer cartridge 1, the abutting portion 36b3 of the third abutting member 36b does not contact or only slightly contacts the third abutted portion 912 on the frame 91, and the first force-applying surface 31a3 contacts the abutted end 36a1 of the housing 36a. When the separation force output member 99 begins to apply a separation force to the force-receiving member 31a, the separation force output member 99 abuts against the first force-receiving surface 31a1 of the force-receiving member 31a and moves relative to the first force-receiving surface 31a1 along the extension direction of the first force-receiving surface 31a1, causing the force-receiving member 31a to move downward relative to the second protective cover 33a through the first mounting hole 33a1. During the movement of the force-bearing member 31a under the separation force, the abutted end 36a1 of the shell 36a gradually changes from abutting the first force-applying surface 31a3 to abutting the transition surface 31a4, and the abutment between the two approaches the second force-applying surface 31a5 from the first force-applying surface 31a3 along the extension direction of the transition surface 31a4, so that the shell 36a drives the third abutting member 36b and the seventh elastic member 36c to move toward the direction close to the third abutted portion 912, and the abutting portion 36b3 of the third abutting member 36b remains in abutment with the third abutted portion 912, and the seventh elastic member 36c is continuously compressed and accumulates elastic potential energy. When the separation force output member 99 abuts against the second force-bearing surface 31a2, the second force-applying surface 31a5 abuts against the abutted end 36a1 and maintains abutment. Under the action of the elastic potential energy of the seventh elastic member 36c, the developing box 1 as a whole moves away from the photosensitive drum. The separation force output member 99 applies a separation force to the second force-bearing surface 31a2 and the two move relative to each other along the extension direction of the second force-bearing surface 31a2, and the developing roller 131 separates from the photosensitive drum 92.

[0184] When the separation force output member 99 cancels the separation force applied to the force-bearing member 31a, under the action of the forced pushing force applied by the pushing portion receiving the drum assembly, the developing box 1 moves toward the direction close to the photosensitive drum 92, and the force-applying member applies a reaction force to the force-bearing member 31a, so that the force-bearing member extends out of the second protective cover 33a to reset, and the abutted end 36a1 again passes through the transition surface 31a4 and contacts the first force-applying surface 31a3.

[0185] In some embodiments, the elastic member and the abutting member may be integrated, that is, the abutting member has a certain elastic deformation. When the abutting member moves, it is abutted and deformed, releasing elastic potential energy to make the developing box 1 move away from the photosensitive drum 92.

[0186] This embodiment does not limit the number and shape of the force-bearing surfaces and force-applying surfaces on the force-bearing member 31 a , nor does it limit the number of elastic members and the number of abutting members, as long as the above functions can be achieved.

[0187] Example 8

[0188] Unless otherwise specified, the structure of the developing cartridge in this embodiment is the same as that in embodiment 7. The main difference between this embodiment and embodiment 7 is that the arrangement of the separation components in this embodiment is different.

[0189] like Figure 42 As shown, the second end 12 of the box body 10 is provided with a third guide portion 125a, which can be provided on the bearing of the second end 12 or on the side wall of the second end 12. The third guide portion 125a extends forward along the second direction and extends downward along the third direction.

[0190] like Figure 42 and Figure 43 As shown, the second protective cover 33b is detachably mounted on the second end 12, and the second protective cover 33b includes a second abutting surface 33b1, a third abutting surface 33b2, a first opening 33b3 and a second opening 33b4. The second abutting surface 33b1 and the third abutting surface 33b2 are inclined surfaces or arc surfaces. The second abutting surface 33b1 and the third abutting surface 33b2 are arranged opposite to each other in the second direction, and there is a gap between them. The second abutting surface 33b1 and the third abutting surface 33b2 extend in a direction intersecting with the second direction. Both extend in a direction close to the developing roller 131, and their extension directions intersect, that is, the second abutting surface 33b1 and the third abutting surface 33b2 have a certain height difference in the third direction, and as the second abutting surface 33b1 and the third abutting surface 33b2 continue to extend along the extension direction, the height difference between the two in the third direction gradually decreases (that is, the gap between the second abutting surface 33b1 and the third abutting surface 33b2 gradually decreases). The second opening 33 b 4 is located below the third contact surface 33 b 2 , and the first opening 33 b 3 is farther away from the developing roller 131 than the second opening 33 b 4 in the second direction.

[0191] like Figure 42 、 Figure 44 and Figure 45As shown, the separation assembly is disposed at the second end and includes a force-bearing member 31b and a force-applying member. The force-bearing member 31b is movably mounted on the second protective cover 33b through the first opening 33b3. The force-bearing member 31b includes a first force-bearing surface 31b1, a second force-bearing surface 31b2, and a force-applying portion 31b3. In the second direction, the force-applying portion 31b3 is closer to the developing roller 131 than the first force-bearing surface 31b1 and the second force-bearing surface 31b2. The first force-bearing surface 31b1 is connected to the second force-bearing surface 31b2. The first force-bearing surface 31b1 is an arcuate surface that extends toward the developing roller 131. The extension direction intersects the second direction and the third direction. In the second direction, the starting end of the first force-bearing surface 31b1 is farther away from the developing roller 131 than the end end. In the third direction, the starting end of the first force-bearing surface 31b1 is located below the end end. In other embodiments, the first force-bearing surface 31b1 may also be an inclined surface. The second force-bearing surface 31b2 is an inclined surface extending toward the developing roller 131. Its extension direction intersects the second and third directions. Its starting point in the second direction is farther from the developing roller than its end. The starting point of the second force-bearing surface 31b2 is connected to the end of the first force-bearing surface 31b1. The extension direction of the first force-bearing surface 31b1 intersects the extension direction of the second force-bearing surface 31b2. The angle between the second force-bearing surface 31b2 and the second direction is smaller than the angle between the first force-bearing surface 31b1 and the second direction. The first and second force-bearing surfaces 31b1 and 31b2 are configured to receive the separation force applied by the separation force output member 99 of the image forming device, thereby causing the force-bearing member 31b to move.

[0192] like Figure 42 、 Figures 44 to 46 As shown, the force-applying member includes a housing 36d, a fourth abutting member 36e, a fifth abutting member 36f, and an eighth elastic member 36g. The fourth abutting member 36e, the fifth abutting member 36f, and the eighth elastic member 36g are mounted within the housing 36d. The housing 36d includes a third opening 36d1, a fourth opening 36d2, and a guided portion 36d3. The third opening 36d1 and the fourth opening 36d2 are two openings disposed opposite each other on the housing 36d. The guided portion 36d3 is configured to mate with the third guide portion 125a. The third guide portion 125a can be a smooth protrusion, while the guided portion 36d3 is a groove. The third guide portion 125a cooperates with the guided portion 36d3 to slide in the third direction relative to the box body 10 along the extension direction of the third guide portion 125a.

[0193] like Figure 42 、 Figures 44 to 46As shown, the fourth abutting member 36e includes a first abutting end 36e1 and a first connecting portion 36e2. The fifth abutting member 36f includes a second abutting end 36f1 and a second connecting portion 36f2. The first abutting end 36e1 is exposed outside the housing 36d through the third opening 36d1, and the second abutting end 36f1 is exposed outside the housing 36d through the fourth opening 36d2. The eighth elastic member 36g is an elastic medium such as a compression spring or sponge. One end of the eighth elastic member 36g is connected to the first connecting portion 36e2, and the other end is connected to the second connecting portion 36f2. In other words, the eighth elastic member 36g connects the fourth abutting member 36e and the fifth abutting member 36f. The eighth elastic member 36g can be compressed by the fourth abutting member 36e and the fifth abutting member 36f to produce deformation. The first abutting end 36e1 abuts the second abutting surface 33b1 of the second protective cover 33b, and the second abutting end 36f1 abuts the third abutting surface 33b2. The second abutting end 36f1 can be released from the abutting surface 33b2 and extend out of the second protective cover 33b through the second opening 33b4. The force-applying portion 31b3 of the force-receiving member 31b abuts against the housing 36d and can drive the force-applying member to move relative to the case body 10 along the extension direction of the third guide portion 125a.

[0194] like Figure 45 、 Figure 47 and Figure 48 As shown, when the developing box 1 is installed on the drum assembly 2, the two are installed together in the image forming device. When the separation force output member 99 applies a separation force to the developing box 1, the first abutting end 36e1 abuts against the second abutting surface 33b1, and the second abutting end 36f1 abuts against the third abutting surface 33b2. The second abutting end 36f1 does not extend out of the second protective cover 33b. The force-applying portion 31b3 of the force-bearing member 31b contacts the shell 36d but does not apply force to it to make it move. The developing roller 131 and the photosensitive drum 92 are in contact.

[0195] like Figure 46 、 Figure 49 and Figure 50 As shown, when the separation force output member 99 receives the instruction of the image forming device to apply separation force to the developing box 1, the separation force output member 99 abuts against the force-bearing member 31b, causing the force-bearing member 31b to move and abut against the shell 536d, causing the force-applying member to move, and then the second abutting end 36f1 extends out of the second protective cover 33b through the second opening 33b4 and abuts against the third abutted portion 912 of the drum assembly, causing the developing box 1 to move in a direction away from the photosensitive drum 92, so that the developing roller 131 is separated from the photosensitive drum 92.

[0196] Specifically, when the separation force output member 99 begins to apply the separation force to the force receiving member 31b, the separation force output member 99 abuts against the first force-bearing surface 31b1 of the force receiving member 31b, and further abuts against the starting end of the first force-bearing surface 31b1. As the separation force output member 99 further applies the separation force, the separation force output member 99 transitions from abutting against the starting end of the first force-bearing surface 31b1 to abutting against the end of the first force-bearing surface 31b1 along its extension direction. That is, the separation force output member 99 slides against the first force-bearing surface 31b1, causing the force receiving member 31b to move relative to the second protective cover 33b, specifically, retracting the force receiving member 31b into the second protective cover 33b. During the process of the force receiving member 31b retracting into the second protective cover 33b, the force applying portion 31b3 abuts against the housing 36d, causing the housing 36d to drive the force applying member to move along the extension direction of the third guide portion 125a. During the movement of the force-applying member, the first abutting end 36e1 maintains abutment with the second abutting surface 33b1, and the second abutting end 36f1 maintains abutment with the third abutting surface 33b2 and approaches the second opening 33b4. Since the extension directions of the second abutting surface 33b1 and the third abutting surface 33b2 intersect, when the fourth abutting member 36e and the fifth abutting member 36f respectively move and abut with the second abutting surface 33b1 and the third abutting surface 33b2, the fourth abutting member 36e and the fifth abutting member 36f approach each other, and the eighth elastic member 36g connecting the fourth abutting member 36e and the fifth abutting member 36f is compressed and accumulates elastic potential energy.

[0197] When the separation force output member 99 passes the end of the extension of the first force-bearing surface 31b1 and turns to abut the starting end of the extension of the second force-bearing surface 31b2, the force-bearing member 31b stops relative movement with the box body 10, and the second abutting end 36f1 disengages from the abutment with the third abutting surface 33b2. The eighth elastic member 36g releases the elastic potential energy so that the second abutting end 36f1 extends through the second opening 33b4 and abuts on the third abutted portion 912 of the drum assembly. The reaction force of the elastic potential energy causes the developing box 1 to move in the direction away from the photosensitive drum 92. The separation force output member 99 abuts on the second force-bearing surface 31b2 and moves relative to the second force-bearing surface 31b2, and the developing roller 131 separates from the photosensitive drum 92.

[0198] This embodiment does not restrict the number and shape of the force-bearing surfaces on the force-bearing member 31 b , and does not limit the number of elastic members and abutting members, and is sufficient to achieve the above functions.

[0199] Embodiment 9

[0200] Unless otherwise specified, the structure of the developing box in this embodiment is the same as that in the first embodiment. The main difference between this embodiment and the first embodiment is the different arrangement of the separation components.

[0201] like Figure 59As shown, in this embodiment, the drum assembly includes a force-applying assembly for applying a pushing force to the developing box so that the developing roller 131 contacts the photosensitive drum 92. The force-applying assembly includes a third elastic component 97 and a force-applying component 96. The force-applying component 96 is connected to the third elastic component 97 and is located on the front side of the third elastic component 97. The pushing force is provided by the elastic force of the third elastic component 97 and acts on the developing box through the force-applying component 96.

[0202] like Figure 51 and Figure 53 As shown, the second protective cover 33c is provided at the second end 12, and the second protective cover 33c is detachably mounted on the box body 10. The second protective cover 33c at least protects the separation component part. The second protective cover 33c includes a locked member 33c1 and a third mounting portion 33c2. In the second direction relative to the third end 13, the locked member 33c1 is arranged close to the fourth end 14. The locked member 33c1 is locked by the locking member on the drum assembly when the developing box 1 is installed on the drum assembly to prevent the developing box 1 from being separated from the drum assembly. In the second direction, relative to the fourth end 14, the third mounting portion 33c2 is arranged close to the third end 13. The third mounting portion 33c2 includes a first guide 33c21 and a seventh connecting protrusion 33c22. The first guide 33c21 and the seventh connecting protrusion 33c22 both extend in a direction away from the fourth end 14, and their extension directions intersect with the second direction and the third direction, specifically extending forward along the second direction and upward along the third direction. The first guide 33c21 is one or more bar-shaped holes or grooves. In this embodiment, two bar-shaped holes are preferably provided. The seventh connecting protrusion 33c22 is a cross-shaped protrusion, but may also be other shapes.

[0203] like Figures 51-54As shown, a bearing 122 is disposed at the second end 12 and is removably mounted on the cartridge body 10. The bearing 122 rotatably supports the developing roller 131 and the powder feed roller. The bearing 122 includes a fourth mounting portion 12a, a fifth mounting portion 12b, an abutment member 12c, a first protrusion 12d, a second protrusion 12e, and a first hole 125. The fourth mounting portion 12a includes a first stopper 12a1, a second stopper 12a2, and a second guide 12a3. The second guide 12a3 is a groove or a strip-shaped hole extending away from the fifth end 15. In this embodiment, the second guide 12a3 is preferably a groove extending downward in the third direction and forward in the second direction. The first stopper 12a1 and the second stopper 12a2 are located on opposite sides of the second guide 12a3 and are cantilevered protrusions with a certain degree of elasticity. In the third direction, the fifth mounting portion 12b is located below the fourth mounting portion 12a. The fifth mounting portion 12b includes a third guide and a second connecting protrusion 12b3. The third guide is a plurality of strip-shaped holes or grooves extending in the first direction. In this embodiment, the third guide is preferably a first strip-shaped hole 12b1 and a second strip-shaped hole 12b2. The second connecting protrusion 12b3 is a cross-shaped protrusion extending in the first direction. The abutment member 12c is positioned adjacent to the fifth mounting portion 12b. In the second direction, the abutment member 12c is closer to the third end 13 than the fifth mounting portion 12b. The abutment member 12c is provided with a fourth guide 12c1. The fourth guide 12c1 is a groove or strip-shaped hole extending in the first direction. In this embodiment, the fourth guide 12c1 is preferably a groove. The first protrusion 12d and the second protrusion 12e are both protrusions extending in the first direction, more preferably cylindrical protrusions. The first hole 125 is a through hole or a blind hole extending in the first direction. In this embodiment, the first hole 125 is preferably a through hole. The first hole 125 is used to rotatably support the developing roller 131. The bearing 122 further includes a powder feeding hole (not shown), which is used to rotatably support the powder feeding roller.

[0204] like Figure 51-53As shown, in this embodiment, the separation assembly includes a force-bearing member 31c, a force-applying member 32c, a pushing member 60, an abutting member 62, and a second elastic member 63. The force-bearing member 31c is slidably disposed at the second end 12 of the housing 10. The force-bearing member 31c is restrained by a second protective cover 33c to prevent the force-bearing member 31c from falling off. The force-bearing member 31c can receive the separation force applied by the separation force output member 99 of the image forming device and slide relative to the housing 10. The force-bearing member 31c includes a first force-bearing portion 31c1, a first support hole 31c2, a second support hole 31c3, and a first force-applying portion 31c4. In the second direction, the first force-bearing portion 31c1 is farther away from the developing roller 131 than the first force-applying portion 31c4. The first force-bearing portion 31c1 is a protrusion extending along the first direction. The first force-bearing portion 31c1 is used to receive the separation force applied by the separation force output member 99, causing the force-bearing member 31c to perform linear motion. The first support hole 31c2 and the second support hole 31c3 are strip-shaped holes, which may also be strip-shaped grooves in some embodiments. The first support hole 31c2 and the second support hole 31c3 extend in the same direction as the sliding direction of the force-bearing member 31c, both extending forward in the second direction and downward in the third direction. A third protrusion 122d extending in the first direction is also provided on the second end 12, which is further a cylindrical protrusion. The first support hole 31c2 is mounted on the third protrusion 122d, and the second support hole 31c3 is mounted on the first protrusion 12d, so that the force-bearing member 31c can be slidably supported by the bearing 122 and the third protrusion 122d. In this embodiment, two support holes 31c2 are preferably provided to ensure the stability of the force-bearing member 31c. In other embodiments, one or more support holes 31c2 may be provided.

[0205] like Figure 51-53As shown, the force-applying member 32c is slidably disposed at the second end 12 of the box body 10. The force-applying member 32c is driven by the force-receiving member 31c to slide relative to the box body 10. The force-applying member 32c includes a second force-receiving portion 32c1, a third force-receiving portion 32c2, a second force-applying portion 32c3, a first guide protrusion 32c4, a third support hole 32c5, and a fourth support hole (not shown). The second force-receiving portion 32c1 and the third force-receiving portion 32c2 are two connected force-receiving surfaces, both of which are abutted by the first force-applying portion 31c4 of the force-receiving member 31c. In the third direction, the second force-applying portion 32c3 is located below the second force-receiving portion 32c1 and the third force-receiving portion 32c2, and the second force-applying portion 32c3 is an inclined surface. The first guide protrusion 32c4 is located on the side of the force-applying member 32c in the first direction, proximal to the second end 12, and extends along the first direction. The first guide protrusion 32c4 is inserted into the second guide 12a3 to enable the force-applying member 32c to slide along the extension direction of the second guide 12a3. The third support hole 32c5 and the fourth support hole extend in the same direction as the second guide 12a3. The third support hole 32c5 and the fourth support hole are bar-shaped holes. In some embodiments, they can also be bar-shaped grooves or only one support hole. The first limiting member 12a1 is inserted into the third support hole 32c5, and the second limiting member 12a2 is inserted into the fourth support hole to prevent the force-applying member 32c from disengaging.

[0206] like Figure 51-53 and Figure 55As shown, the urging member 60 is slidably disposed at the second end of the cassette body 10. The urging member 60 is driven by the force-applying member 32c to slide relative to the cassette body 10. The urging member 60 includes a third urging portion 601 and a fourth urging portion 602. The third urging portion 601 and the fourth urging portion 602 are configured to receive the urging force of the drum assembly to bring the developing roller 131 into close contact with the photosensitive drum 92. In the second direction, the third urging portion 601 is further away from the developing roller 131 than the fourth urging portion 602. When viewed from the first direction, the third urging portion 601 overlaps with the first urging portion 1142. The urging member 60 also includes a fourth force-bearing portion 603 and a fifth force-bearing portion 604, which are connected surfaces. The fourth force-bearing portion 603 and the fifth force-bearing portion 604 are configured to be abutted by the second force-applying portion 32c3 of the force-applying member 32c to cause the urging member 60 to slide along the first direction toward the second end 12, i.e., to the right. The pushing member 60 also includes a second guide protrusion 605, a third guide protrusion 606 and a fourth guide protrusion 607. The second guide protrusion 605 and the third guide protrusion 606 are arranged on the two side surfaces of the pushing member 60 in the second direction and each protrudes outward. The second guide protrusion 605 and the third guide protrusion 606 are convenient for installation. The fourth guide protrusion 607 is arranged on the lower side surface of the pushing member 60 in the third direction and protrudes outward. The second guide protrusion 605 and the third guide protrusion 606 are respectively inserted into the fourth guide 12c1 and the first strip hole 12b1, and the fourth guide protrusion 607 is inserted into the second strip hole 12b2, so that the pushing member 60 slides along the first direction when it is abutted by the force-applying member 32c. The side of the urging member 60 that is closer to the developing roller 131 in the second direction abuts against the abutment component 12c of the bearing 122 so that the urging force received by the urging member 60 can be more effectively transmitted to the developing roller 131. In some embodiments, the urging member 60 may not abut against other components. The urging member 60 also includes a transition surface 608, which is an inclined surface or an arc surface that is inclined relative to the third urging portion 601 and the fourth urging portion 602. The transition surface 608 connects the third urging portion 601 and the fourth urging portion 602.

[0207] The second end 12 is also provided with a first elastic component 61, and the first elastic component 61 can be an elastic medium such as a compression spring or sponge. In this embodiment, the first elastic component 61 is preferably a compression spring. One end of the first elastic component 61 close to the second end 12 in the first direction is sleeved on the second connecting protrusion 12b3 and abuts against the bearing 122, and the other end abuts against the pushing member 60. When the pushing member 60 is abutted by the force-applying member 32c and slides to the right along the first direction, the first elastic component 61 is compressed and accumulates elastic potential energy.

[0208] like Figure 51 and Figure 53As shown, the abutment member 62 is movably mounted within the third mounting portion 33c2 and is configured to abut against a fourth abutted portion 914 provided on the drum assembly frame 91. The abutment member 62 includes an abutting surface 621, a fifth guide protrusion 622, and a sixth guide protrusion 623. The abutment surface 621 directly abuts against the fourth abutted portion 914. The fifth and sixth guide protrusions 622 and 623 are respectively provided on two side surfaces of the abutment member 62 in the third direction and each protrudes outward. The fifth and sixth guide protrusions 622 and 623 have a certain degree of elasticity to facilitate installation. The fifth and sixth guide protrusions 622 and 623 are respectively inserted into two strip-shaped holes in the first guide 33c21 to guide the abutment member 62 in the direction in which the first guide 33c21 extends. The second elastic member 63 is mounted within the third mounting portion 33c2. One end of the second elastic member 63 is sleeved onto the seventh connecting protrusion 33c22 and abuts against the inner wall of the third mounting portion 33c2. The other end of the second elastic member 63 abuts against the abutment member 62 and can be compressed or stretched along the extension direction of the first guide 33c21. The second elastic member 63 is an elastic medium such as a compression spring or sponge. In this embodiment, a compression spring is preferably used.

[0209] like Figures 56-63 As shown, the developer cartridge 1 is detachably mounted on the drum assembly. When the separation force output member 99 does not apply a separation force to the force receiving member 31c, the abutting member 62 is retracted within the third mounting portion 33c2 and abuts against the fourth abutted portion 914. The second elastic member 63 is compressed and exerts a first elastic force. The first force-applying portion 31c4 of the force receiving member 31c abuts against the second force-receiving portion 32c1 of the force-applying member 32c, and the second force-applying portion 32c3 abuts against the fourth force-receiving portion 603 of the urging member 60. The first elastic member 61 is uncompressed, the force-applying member 96 abuts against the third urging portion 601, and the third elastic member 97 is compressed and exerts a second elastic force. The second elastic force is greater than the first elastic force, ensuring close contact between the developing roller 131 and the photosensitive drum 92. The second protrusion 12e is supported on the supporting surface 915.

[0210] When the separation force output member 99 applies a separation force to the force receiving member 31c, the separation force output member 99 abuts against the first force receiving portion 31c1, causing the force receiving member 31c to slide relative to the box body 10 along the extension direction of the first support hole 31c2. The first force applying portion 31c4 abuts against the third force receiving portion 32c2 of the force applying member 32c, causing the force applying member 32c to slide relative to the box body 10 along the extension direction of the second guide 12a3. The second force-applying portion 32c3 abuts against the fifth force-bearing portion 604 of the pushing member and causes the pushing member 60 to slide to the right along the first direction. The force-applying component 96 no longer abuts against the third pushing portion 601. The force-applying component 96 approaches the fourth pushing portion 602 from the third pushing portion 601 through the transition surface 608. The first elastic component 61 is compressed, and the third elastic component 97 releases part of the elastic force and causes the force-applying component 96 to move in a direction close to the developing roller 131. The force-applying component 96 abuts against the fourth pushing portion 602. At this time, the third elastic component 97 has a third elastic force, which is smaller than the first elastic force.

[0211] Because the third elastic force exerted by the partially released elastic force of the third elastic member 97 is less than the first elastic force exerted by the second elastic member 63, the abutting member 62 extends relative to the third mounting portion 33c2 under the action of the partially released elastic force of the second elastic member 63 and pushes against the fourth abutted portion 914, causing the cartridge body 10 to move away from the photosensitive drum 92, gradually separating the developing roller 131 from the photosensitive drum 92. At the same time, the second protrusion 12e moves relative to the supporting surface 915 on the supporting surface 915 to ensure smooth separation of the developing roller 131 from the photosensitive drum 92. In some embodiments, the second protrusion 12e may not be provided.

[0212] When the separation force output member 99 no longer applies a separation force to the force-bearing member 31c, the pushing member 60 moves to the left along the first direction under the action of the first elastic member 61, and the transition surface 608 abuts against the force-applying member 96, causing the force-applying member 96 to move away from the developing roller 131. The force-applying member 96 abuts against the third pushing portion 601 again, and the third elastic member 97 has the second elastic force again. The abutting member 62 retracts into the third mounting portion 33c2, and the second elastic member 63 continues to exert elastic force and has the first elastic force again, and the developing roller 131 is in close contact with the photosensitive drum 92.

[0213] It can be seen that in this embodiment, the pushing member 60 and the bearing 122 are made of conductive materials such as conductive resin or metal, that is, the pushing member 60 in this embodiment can be regarded as an electrode for receiving the voltage output by the image forming device, and the pushing member 60 is electrically connected to the developing roller 131 and the powder feeding roller to transmit the voltage to the developing roller 131 and the powder feeding roller.

[0214] In some embodiments, the force-applying assembly may include only the third elastic component 97 , omitting the force-applying component 96 , and the third elastic component 97 may directly abut against the third pushing portion 601 or the fourth pushing portion 602 , thereby achieving the same effect.

[0215] Example 10

[0216] Unless otherwise specified, the structure of the developing cartridge in this embodiment is the same as that in embodiment 9. The main difference between this embodiment and embodiment 9 is that the third urging portion and the fourth urging portion are provided on different components in this embodiment.

[0217] like Figure 64 and Figure 65 As shown, in this embodiment, a third pushing portion 60a1 is provided on the pushing member 60a, and a fourth pushing portion 12c2 is provided on the abutting member 12c. When the separation component does not receive the separation force, the third pushing portion 60a1 is abutted by the force-applying member 96. After the separation component receives the separation force, the pushing member 60a moves to the right along the first direction, and the force-applying member 96 abuts against the fourth pushing portion 12c2.

[0218] In this embodiment, the second end 12 is further provided with a fourth elastic component 64 and a fifth elastic component 65. The fourth elastic component 64 and the fifth elastic component 65 are elastic media such as compression springs, tension springs or sponges. In this embodiment, compression springs are preferably used. Both can be compressed or stretched along the first direction. The fourth elastic component 64 is mounted on the third protrusion 122d, and the fifth elastic component 65 is mounted on the first protrusion 12d. In the first direction, the fourth elastic component 64 and the fifth elastic component 65 are located between the force-bearing member 31c and the side wall of the second end 12. During the installation of the developer cartridge 1 following the drum assembly into the image forming apparatus, the force-bearing member 31c may interfere with components within the image forming apparatus. To avoid such components, the force-bearing member 31c abuts against the components and slides rightward in the first direction to avoid the components. The fourth elastic member 64 and the fifth elastic member 65 are compressed. After the developer cartridge 1 is fully installed in the image forming apparatus, the force-bearing member 31c slides leftward in the first direction under the elastic action of the fourth elastic member 64 and the fifth elastic member 65 to return to a position abutted by the separation force output member 99. In some embodiments, only one elastic member may be provided to act upon the force-bearing member 31c.

[0219] In other embodiments, the fourth elastic component 64 and the fifth elastic component 65 may not be provided, and the first force-bearing portion 31c1 of the force-bearing member 31c may undergo a certain elastic deformation when abutted to avoid interfering components in the image forming device.

[0220] Example 11

[0221] Unless otherwise specified, the structure of the developing cartridge in this embodiment is the same as that in embodiment 9. The main difference between this embodiment and embodiment 9 is that the pushing member in this embodiment does not move along the first direction.

[0222] like Figures 66-68 As shown, the bearing 122 is provided with a fourth mounting portion 12a, a first protrusion 12d, a second protrusion 12e, and a first hole 125, identical to those in the first embodiment. The bearing 122 also includes a sixth mounting portion, a fourth forcing portion 12f, a first connecting member 12g, and a second connecting member 12h. The sixth mounting portion includes a first strip-shaped hole 12i and a second strip-shaped hole 12j for guidance. The first and second strip-shaped holes 12i and 12j extend downward in the third direction and forward in the second direction. The fourth forcing portion 12f is configured to receive the forcing force applied by the force-applying component 96 when the separation assembly receives the separation force applied by the separation force output member 99. The first and second connecting members 12g and 12h are both hook-shaped.

[0223] The pushing member 60b is movably mounted on the sixth mounting portion. The pushing member 60b serves as a third pushing portion, receiving the pushing force applied by the force-applying member 96 when the separation assembly is not receiving the separation force. The pushing member 60b is provided with two connecting protrusions that are respectively inserted into the first strip hole 12i and the second strip hole 12j. When the separation assembly receives the separation force, the pushing member 60b is abutted by the force-applying member 32c, and the extension direction of the first strip hole 12i moves relative to the box body 10, so that the pushing member 60b avoids the force-applying member 96, thereby causing the force-applying member 96 to abut the fourth pushing portion 12f. The pushing member 60b includes a third hook-shaped connecting member 60b1 and a fourth connecting member 60b2. As in the first embodiment, this embodiment can also have the third and fourth pushing portions disposed on the same component.

[0224] The second end 12 is further provided with a sixth elastic member 66 and a seventh elastic member 67. The sixth elastic member 66 and the seventh elastic member 67 are elastic media such as tension springs or compression springs, preferably tension springs in this embodiment. The sixth elastic member 45 is connected to the first connecting member 12g at one end and to the third connecting member 60b1 at the other end. The seventh elastic member 67 is connected to the second connecting member 12h at one end and to the fourth connecting member 60b2 at the other end. When the pushing member 60b is abutted by the force-applying member 32c and slides along the extension direction of the first strip-shaped hole 12i, the sixth elastic member 66 and the seventh elastic member 67 are stretched and accumulate elastic force. When the separation assembly is no longer receiving the separation force, the pushing member 60b is forced to slide in the opposite direction under the action of the sixth elastic member 66 and the seventh elastic member 67.

[0225] 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 developing cartridge, detachably mounted on an image forming device including a drum assembly, wherein the drum assembly includes a photosensitive drum, characterized in that: The developing box comprises: A box body for storing developer, the box body having a first end and a second end opposite to each other in a first direction, a third end and a fourth end opposite to each other in a second direction, and a fifth end and a sixth end opposite to each other in a third direction, wherein the first direction, the second direction and the third direction intersect; a developing roller rotatably supported at a third end of the cartridge body, wherein a rotation axis of the developing roller extends along a first direction, and the developing roller contacts the photosensitive drum to transfer a developer; A driving unit, disposed at the first end of the box body, capable of receiving a driving force of the image forming device; A separation component receives the separation force to drive the box body to move so as to separate the developing roller from the photosensitive drum, and the separation component is located at the first end or the second end of the box body.

2. The developing cartridge according to claim 1, characterized in that: The separation component is located at the second end, and the separation component includes a force-bearing member and a force-applying member. The force-bearing member receives the separation force and moves relative to the box body in the second direction toward the developing roller, and drives the force-applying member to move in the first direction toward the box body, and then the force-applying member drives the box body to move in the second direction toward the direction away from the photosensitive drum.

3. The developing cartridge according to claim 2, characterized in that: A second force-bearing surface is provided on the box body, and the force-applying member includes a second force-applying surface. A starting end of one of the second force-bearing surface and the second force-applying surface extending in the first direction is closer to the second end than an end, and a starting end extending in the second direction is closer to the developing roller than an end, and the second force-applying surface abuts against the second force-bearing surface and causes the box body to move in the second direction away from the photosensitive drum.

4. The developing cartridge according to claim 2, wherein: The force-bearing member includes a first force-applying surface, and the force-applying member includes a first force-bearing surface. A starting end of one of the first force-applying surface and the first force-bearing surface extending in the first direction is closer to the second end than the end, and a starting end extending in the second direction is farther away from the developing roller than the end. The first force-applying surface abuts against the first force-bearing surface and causes the force-applying member to move along the first direction.

5. The developing cartridge according to any one of claims 2 to 4, characterized in that: A second protective cover is provided at the second end of the box body. The second protective cover is slidably arranged on the box body. The force receiving member and the force applying member are movably arranged on the second protective cover. The second protective cover abuts against the drum assembly.

6. The developing cartridge according to claim 3, characterized in that: A second protective cover is provided at the second end of the box body, the second protective cover is slidably arranged on the box body, the force receiving member and the force applying member are movably arranged on the second protective cover, and the second protective cover abuts against the drum assembly; The developing box also includes a bearing arranged at the second end of the box body and a powder feeding roller extending along the first direction, the bearing supports the developing roller and the powder feeding roller; the second protective cover is installed on the bearing and can slide relative to the bearing; the second force surface is arranged on the bearing.

7. The developing cartridge according to claim 1, characterized in that: The separation component is located at the first end, and the separation component includes a force-bearing member, a transmission member, a limiting member, a force-applying member and a second elastic member. The transmission member and the limiting member are sleeved on the end portion of the developing roller located at the first end. The transmission member abuts against the limiting member, and the limiting member abuts against the force-applying member to limit the force-applying member from moving in a second direction. The second elastic member abuts against the force-applying member and is in a compressed state. When the force-bearing member receives the separation force, it moves in the first direction and drives the transmission member and the limiting member to move in the first direction. Under the elastic force of the second elastic member, the force-applying member moves in the second direction toward the developing roller.

8. The developing cartridge according to claim 7, wherein: The force-applying member is provided with a first abutting surface, the starting end of the first abutting surface extending in the first direction is farther away from the second end than the end, and the starting end extending in the second direction is farther away from the fourth end than the end. When the force-bearing member does not receive the separation force, the limiting member abuts against one end of the first abutting surface.

9. The developing cartridge according to claim 7, wherein: The separation component further includes a first elastic member, which is sleeved on the end portion of the developing roller located at the first end, and the first elastic member abuts between the developing roller and the limiting member.

10. The developing cartridge according to claim 1, wherein: The second end is provided with a second guide portion, and the separation component is a separation protrusion arranged at the second end, the separation protrusion is fixedly mounted on the box body or formed integrally with the box body, the separation protrusion extends along the first direction, and in the second direction, the separation protrusion is closer to the fourth end than the second guide portion.

11. The developing cartridge according to claim 10, characterized in that: The drum assembly includes a guide groove, the second guide portion abuts against the guide groove, the abutment between the second guide portion and the guide groove is a fulcrum swing, and the first end moves in a second direction toward a direction away from the photosensitive drum.

12. The developing cartridge according to claim 10, characterized in that: A portion of the separation protrusion is further away from the first end than the second guide portion in the first direction; or, The separation protrusion has a force-bearing surface, a starting end of the force-bearing surface extending in the second direction is farther away from the developing roller than a terminal end, and a starting end of the force-bearing surface extending in the third direction is closer to the fifth end than an endpoint.

13. The developing cartridge according to claim 1, wherein: The drum assembly includes a guide groove, and the second end is provided with a second guide portion abutting against the guide groove; The separation component is a separation rod, which extends from the second end to the first end, and is installed on the box body. The separation rod is provided with a force-bearing portion located at the second end, and the force-bearing portion receives the separation force to make the developing box swing with the abutment between the second guide portion and the guide groove as a fulcrum, and the first end moves in the second direction toward a direction away from the photosensitive drum.

14. The developing cartridge according to claim 1, wherein: The drum assembly includes a guide groove, and the second end is further provided with a second guide portion abutting against the guide groove; The separation component includes a moving member, which is movably arranged at the second end, and the moving member includes a force-bearing portion and a force-applying portion; the force-bearing portion receives the separation force to make the moving member move in the second direction relative to the box body toward the direction close to the developing roller, and the force-applying portion can be inserted between the second guide portion and the upper groove portion of the guide groove.

15. The developing cartridge according to claim 14, characterized in that: The force-applying portion is pointed, and its outer diameter gradually increases from front to back. As the movable member moves, the force-applying portion is inserted between the second guide portion and the upper groove portion of the guide groove, thereby increasing the distance between the second guide portion and the upper groove portion, thereby causing the developing box to move away from the photosensitive drum.

16. The developing cartridge according to claim 14, characterized in that: The second guide portion is provided with a third elastic member, and the third elastic member abuts against the lower groove portion of the guide groove.

17. The developing cartridge according to claim 1, characterized in that: The separation assembly includes a force-receiving member and a force-applying member. The force-receiving member receives the separation force and moves in a third direction relative to the box body and drives the force-applying member to move in a second direction.

18. The developing cartridge according to claim 17, characterized in that: The force-bearing member comprises a first force-bearing surface and a second force-bearing surface for receiving the separation force, the first force-bearing surface is connected to the second force-bearing surface, and the first force-bearing surface and the second force-bearing surface have an included angle; in the second direction, the first force-bearing surface is farther away from the developing roller than the second force-bearing surface; The force-bearing member also includes a first force-applying surface, a transition surface, and a second force-applying surface. The first force-applying surface and the second force-applying surface extend along a third direction intersecting the first direction and the second direction, and in the second direction, the second force-applying surface is closer to the developing roller than the first force-applying surface. The first force-applying surface is connected to the second force-applying surface via the transition surface, and the transition surface is inclined relative to the first force-applying surface and the second force-applying surface.

19. The developing cartridge according to claim 18, characterized in that: The force applying member includes a shell, a third abutting member and a seventh elastic member; The shell is movably disposed on the box body and abuts against the force-bearing member, the third abutting member is movably disposed on the shell, and the seventh elastic member abuts against the third abutting member and the shell; When the force-bearing member receives the separation force and moves, the shell abuts against the first force-applying surface, the transition surface, and the second force-applying surface in sequence, so that the shell drives the third abutting member and the seventh elastic member to move in the second direction toward the third end, and the third abutting member abuts against the drum assembly, and the seventh elastic member is compressed and stores elastic potential energy. Under the action of the elastic potential energy of the seventh elastic member, the developing box moves in the direction away from the photosensitive drum.

20. The developing cartridge according to claim 17, wherein: The second end is fixedly provided with a second protective cover, the second protective cover includes a second abutting surface and a third abutting surface, the second abutting surface and the third abutting surface are arranged opposite to each other with a gap therebetween, the second abutting surface and the third abutting surface extend downwardly in a direction intersecting the second direction, the third abutting surface is closer to the developing roller than the second abutting surface, along the extending direction of the second abutting surface and the third abutting surface, the gap between the two in the third direction gradually decreases, the second protective cover is provided with a second opening, and the second opening is located at the lower side of the third abutting surface; The force-bearing member is movably mounted on the second protective cover; The force applying member is disposed in the second protective cover and is located between the second abutting surface and the third abutting surface.

21. The developing cartridge according to claim 20, characterized in that: The force applying member includes a shell, a fourth abutting member, a fifth abutting member and an eighth elastic member; The shell is movably arranged on the box body, the shell abuts against the force-bearing member and the shell slides in the third direction relative to the box body, the fourth abutting member and the fifth abutting member are movably arranged on the shell, the fourth abutting member abuts against the second abutting surface, the fifth abutting member includes a second abutting end, and the second abutting end abuts against the third abutting surface; the eighth elastic member abuts between the fourth abutting member and the fifth abutting member respectively; The second abutting end can be separated from the abutting contact with the third abutting surface and extend out of the second protective cover through the second opening.

22. The developing cartridge according to claim 1, characterized in that: The drum assembly includes a force-applying assembly for applying a pushing force to the developing box to make the developing roller contact with the photosensitive drum; The force applying assembly includes a third elastic component; The developing box comprises a third urging portion and a fourth urging portion for receiving an urging force, wherein the third urging portion is farther away from the developing roller than the fourth urging portion in the second direction; When the separation component does not receive the separation force, the force-applying component abuts against the third pushing portion, the third elastic component is compressed and has a second elastic force; when the separation component receives the separation force movement, the force-applying component moves relatively to abut against the fourth pushing portion, the third elastic component is compressed and has a third elastic force, and the third elastic force is smaller than the second elastic force.

23. The developing cartridge according to claim 22, characterized in that: The separation assembly comprises an abutment member and a second elastic member, wherein the abutment member is movably arranged on the box body, and the second elastic member abuts against the abutment member; When the separation assembly does not receive the separation force, the abutment member abuts against the drum assembly, the second elastic component is compressed and has a first elastic force, the second elastic force is greater than the first elastic force, and the third elastic force is less than the first elastic force.

24. The developing cartridge according to claim 23, characterized in that: The separation assembly also includes a force-bearing member, a force-applying member and a forced-pushing member movably arranged on the box body; The force receiving member abuts against the force applying member, and the force applying member abuts against the forced pushing member; The force receiving member receives the separation force to move and drives the force applying member to move, and the force applying member drives the pushing member to move along the first direction or the direction intersecting the first direction and the second direction.

25. The developing cartridge according to claim 24, characterized in that: The third forced pushing portion and the fourth forced pushing portion are both arranged on the forced pushing member; the forced pushing member is also provided with a transition surface, and the transition surface connects the third forced pushing portion and the fourth forced pushing portion; or, The second end of the box body is provided with an abutting component, and the fourth forced pushing portion is arranged on the abutting component; and the third forced pushing portion is arranged on the forced pushing member.

26. The developing cartridge according to claim 24, characterized in that: Before the force-bearing member receives the separation force, the force-applying assembly abuts against the third forced pushing portion; The force-bearing member receives the separating member and moves in a direction intersecting the first direction and the second direction and drives the force-applying member to move in the third direction away from the fifth end. The force-applying member drives the pushing member to move in the first direction. The force-applying assembly moves from abutting against the third pushing portion to abutting against the fourth pushing portion. The abutting member moves under the action of the second elastic member and abuts against the drum assembly, causing the box body to move in a direction away from the photosensitive drum.

27. The developing cartridge according to any one of claims 24 to 26, characterized in that: It also includes at least one elastic component for resetting the forced pushing member, wherein the elastic component connects the forced pushing member and the box body, and when the forced pushing member is driven to move by the force applying member, the elastic component is deformed.

Images