Developing box

Abstract

The utility model discloses a developing box which is detachably arranged on an image forming device with a drum assembly, the drum assembly comprises a photosensitive drum and a box body which is used for storing a developing agent, and the box body is provided with a first end and a second end which are oppositely arranged in a first direction; the developing roller is rotatably arranged on the box body and can abut against the photosensitive drum; the driving part receives the power of the image forming device to rotate and is positioned at the first end; the separation assembly comprises a stress part and a force application part, the stress part is used for receiving the separation force of the image forming device and is arranged at the first end and / or the second end of the box body, the force application part is arranged at the second end of the box body, the force application part is arranged at the second end of the box body, and the force application part receives the separation force transmitted by the stress part to move and drives the box body to move; and the box body drives the developing roller to be separated from the photosensitive drum. According to the developing box, structures for receiving separating force can be prevented from being arranged at the two ends of the box body, the structure of the developing box is simplified, and cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic imaging equipment, in particular to a developing box. Background Art

[0002] The developing cartridge is a detachable part widely used in image forming devices. After the printing consumables of the image forming device are consumed, a new developing cartridge needs to be replaced. The developing cartridge can be installed on the drum assembly in the image forming device. The developing cartridge includes a developing roller, and the drum assembly includes a photosensitive drum. The developing cartridge contains a developer. The developing roller contacts the photosensitive drum and transfers toner to the photosensitive drum, so that the image forming device can use toner to form an image and meet the user's printing needs.

[0003] When there is no printing task, the image forming device needs to separate the photosensitive drum and the developing roller to avoid the developing roller and the photosensitive drum from being in contact. When there is a printing task, the image forming device needs to ensure close contact between the developing roller and the photosensitive drum. Therefore, it is necessary to set a forced pushing member on the drum assembly and a forced pushing member on the developing box. A separation force output member is set in the image forming device, and a separation force receiving member is set on the developing box. The forced pushing member and the forced pushing member are used to maintain close contact between the developing roller and the photosensitive drum. The separation force output member and the separation force receiving member are used to separate the developing roller and the photosensitive drum. In the prior art, the developing box needs to be provided with a separation force receiving member so that both ends of the developing roller are separated from the photosensitive drum at the same time, but this makes the structure of the developing box more complicated and increases the cost. Utility Model Content

[0004] The developing box of the utility model can effectively solve the problem of the complicated drum-roller separation structure of the existing developing box.

[0005] According to one aspect of the utility model, a developing cartridge is provided, which is detachably mounted on an image forming device having a drum assembly, wherein the drum assembly includes a photosensitive drum, and includes:

[0006] A box body, used for storing developer, the box body having a first end and a second end arranged opposite to each other in a first direction;

[0007] a developing roller rotatably disposed on the box body and capable of abutting against the photosensitive drum, wherein a rotation axis of the developing roller extends in the first direction;

[0008] a driving unit, receiving power from the image forming device to rotate, and located at the first end;

[0009] A separation component, comprising a force receiving portion and a force applying portion, wherein the force receiving portion is used to receive the separation force of the image forming device, the force receiving portion is arranged at the first end and / or the second end of the box body, and the force applying portion is arranged at the second end of the box body;

[0010] The force-applying portion receives the separation force transmitted by the force-receiving portion and moves, and drives the box body to move, so that the box body drives the developing roller to separate from the abutment with the photosensitive drum.

[0011] In some embodiments, the separation assembly also includes a transmission rod, which is movable relative to the box body, and the transmission rod extends in the first direction. The force-bearing portion is located at the first end, and the force-applying portion is located at the second end. The transmission rod transfers the separation force from the force-bearing portion to the force-applying portion, and the directions of the separation forces received by the force-bearing portion and the force-applying portion intersect with the first direction.

[0012] In some embodiments, the separation component comprises:

[0013] A force-bearing member, movably disposed at the first end, and the force-bearing portion is disposed at the force-bearing member;

[0014] A force applying member, movably disposed at the second end, the force applying portion being disposed at the force applying member;

[0015] The force receiving member and the force applying member are in contact with two ends of the transmission rod in the first direction respectively;

[0016] The force-bearing member receives the separation force and drives the transmission rod and the force-applying member to move. The force-applying member moves and abuts against the drum assembly to generate a reaction force, so that the force-applying member drives the box body to move.

[0017] In some embodiments, the movement directions of the force receiving member and the force applying member intersect with the first direction, and the transmission rod moves in the first direction.

[0018] In some embodiments, the first end and the second end are respectively provided with a first guide rail and a second guide rail, the extension direction of the first guide rail and the second guide rail intersects with the first direction, the force-bearing member and the force-applying member move along the first guide rail and the second guide rail respectively, and an installation groove is provided between the first end and the second end of the box body, and the transmission rod is movably located in the installation groove.

[0019] In some embodiments, the force-bearing portion rotates relative to the box body after receiving the separation force of the image forming device, the transmission rod rotates with the force-bearing portion and drives the force-applying portion to rotate, and the force-applying portion is in rotational contact with the drum assembly.

[0020] In some embodiments, the developing roller has a hollow portion extending along the first direction, the transmission rod is located in the hollow portion, and the transmission rod rotates relative to the developing roller.

[0021] In some embodiments, the separation force includes a first separation force and a second separation force, and the force-bearing portion includes a first force-bearing portion that receives the first separation force and a second force-bearing portion that receives the second separation force, the first force-bearing portion is located at the second end, and the second force-bearing portion is located at the first end, and the first force-bearing portion moves at the second end of the box body to drive the box body to move, and when viewed from a first direction, the first force-bearing portion and the second force-bearing portion at least partially do not overlap.

[0022] In some embodiments, the force-bearing member includes a first force-bearing member and a second force-bearing member, the first force-bearing member is movably arranged at the second end, the first force-bearing portion is arranged at the first force-bearing member, the second force-bearing member is fixedly arranged at the first end, the second force-bearing portion is arranged at the second force-bearing member, the first force-bearing member is in contact with the force-applying member, and the force-applying member receives the first separation force transmitted by the first force-bearing member and moves.

[0023] In some embodiments, the second end is provided with a first guide rail and a second guide rail, the extension directions of the first guide rail and the second guide rail intersect, the first force receiving member is movably arranged on the first guide rail, and the force applying member is movably arranged on the second guide rail.

[0024] In some embodiments, the separation assembly further includes a flexible member and a force-bearing member, the force-bearing portion is disposed on the force-bearing member, the flexible member receives the separation force transmitted by the force-bearing portion and moves relative to the box body, and the force-applying portion is disposed on the flexible member.

[0025] In some embodiments, a first guide rail and a second guide rail are provided at the second end, the force-bearing member is movably provided on the first guide rail, the flexible member is movably provided on the second guide rail, and the second guide rail is curved.

[0026] In some embodiments, after being driven by the force-bearing member, the flexible member moves in a curve relative to the box body and maintains its own shape.

[0027] In some embodiments, a force-applied portion is provided on the box body, one end of the flexible member is connected to the force-bearing member, and the other end of the flexible member is connected to the force-applied portion.

[0028] In some embodiments, the separation assembly further includes a support member, which is movably disposed at the second end and in contact with the drum assembly, the force-bearing portion receives the separation force to move the box body, and the support member moves relative to the box body.

[0029] In some embodiments, when the flexible member receives the separation force and moves, the flexible member abuts against the support member.

[0030] In some embodiments, the separation component comprises:

[0031] A force-bearing member, which is movably arranged at the second end, and the force-bearing part is arranged on the force-bearing member;

[0032] The force-applying member is constructed as a transmission wheel, is transmission-connected to the force-receiving member, and is rotatably disposed at the second end of the box body, and the force-applying portion is disposed on the transmission wheel;

[0033] The transmission wheel is in transmission connection with the force bearing member, and the box body further comprises a coupling member, which is in transmission connection with the transmission wheel.

[0034] In some embodiments, the force-bearing member includes a rack structure, the transmission wheel includes a gear structure, the engaging member includes a rack structure, and the transmission wheel is meshed with the force-bearing member and the force-applying member for transmission.

[0035] In some embodiments, the separation component comprises:

[0036] A force-bearing member, movably disposed at the second end, wherein the force-bearing portion is disposed on the force-bearing member;

[0037] A force-applying member is movably arranged at the second end, and the force-applying portion is arranged on the force-applying member; the moving direction of the force-applying member intersects with the moving direction of the force-receiving member;

[0038] The separation force is received by the force-bearing part, so that the force-bearing member moves and the projection of the force-applying member coincides with the projection of the force-applying member. The force-bearing member and the force-applying member generate a reaction force to cause the force-applying member to move. The force-applying part abuts against the drum assembly and generates a reaction force with the drum assembly to drive the box body to move.

[0039] In some embodiments, the second end is provided with a first guide rail and a second guide rail, the first guide rail has a first elastic member inside, the first elastic member abuts against the force-bearing member, the second elastic member is installed in the second guide rail, the force-bearing member and the force-applying member are movably arranged on the first guide rail and the second guide rail, respectively, and are moved and reset by the first elastic member and the second elastic member.

[0040] In some embodiments, the force-receiving member has a first magnetic member, and the force-applying member has a second magnetic member. When the force-receiving member moves and drives the first magnetic member and the second magnetic member to approach each other, a repulsive reaction force is generated, causing the force-applying member to move.

[0041] In some embodiments, the force-bearing member is rotatably disposed at the second end of the box body, and the first magnetic member is disposed on the force-bearing portion and swings simultaneously with the force-bearing portion, so that a repulsive reaction force is generated when the first magnetic member and the second magnetic member are relatively close to each other.

[0042] In some embodiments, the separation component comprises:

[0043] A force-bearing member, which is movably arranged at the second end, and the force-bearing part is arranged on the force-bearing member;

[0044] The force applying portion is fixedly arranged at the second end of the box body;

[0045] an abutment member slidably disposed at the second end of the box body;

[0046] The separation force is received by the force-bearing part, so that the force-bearing member moves and is inserted between the force-applying part and the abutting member, and the abutting member abuts against the drum assembly, forcing the force-applying part to move and drive the box body to move.

[0047] In some embodiments, a guide rail is provided at the second end, the force-bearing member is movably arranged in the guide rail, and a reset elastic member is provided in the guide rail, the reset elastic member abuts against the force-bearing member to move and reset the force-bearing member.

[0048] In some embodiments, the abutment member is provided with a limiting hole, and the second end of the box body is provided with a retaining member, the retaining member is inserted into the limiting hole and abuts against the abutment member, so that the abutment member slides along the limiting hole.

[0049] In some embodiments, the separation component comprises:

[0050] A force-bearing member, movably disposed at the second end of the box body, and the force-bearing portion is disposed on the force-bearing member;

[0051] A first rod, wherein the force-applying portion is disposed at one end of the first rod;

[0052] a second rod, one end of which is in contact with the drum assembly, and the other ends of the first rod and the second rod are rotatably connected to the force-bearing member;

[0053] The separation force of the force-bearing part causes the force-bearing member to move and drive the first rod and the second rod to rotate relative to each other, so as to expand the angle formed between the first rod and the second rod, and cause the first rod to drive the force-applying part to move and drive the box body to move.

[0054] In some embodiments, the separation assembly includes a swing rod, the swing rod is swingably disposed at the second end, the swing axis of the swing rod extends in the first direction, the force-applying portion is disposed at the free end of the swing rod; and the first end is provided with a force-bearing member that receives the separation force simultaneously with the swing rod;

[0055] The separation force is received by the force-bearing portion, so that the swing rod drives the force-applying portion to swing until the force-applying portion abuts against the drum assembly, and the swing rod and the drum assembly generate a reaction force to drive the box body to move.

[0056] In some embodiments, the separation assembly includes a swing rod, the swing rod is swingably disposed at the second end of the box body, the swing axis of the swing rod intersects with the first direction, and the force applying member is disposed at the free end of the swing rod;

[0057] The separation force is received by the force-bearing member, so that the swing rod drives the force-applying member to swing in a direction close to the box body, and the force-applying member abuts against the drum assembly and generates a reaction force with the drum assembly, so that the swing rod drives the box body to move.

[0058] In some embodiments, a reset elastic member is further included to drive the separation component to reset.

[0059] In some embodiments, an identification component is further included, the identification component includes a storage medium and an electrical contact surface, the electrical contact surface is electrically connected to the storage medium, the electrical contact surface is located at the first end of the box body, and the storage medium is used to store information about the developer box.

[0060] Compared with the prior art, the developer box of the utility model has the following beneficial effects:

[0061] The separation component of the present application is only provided with a force-bearing part at one end of the box body for receiving the separation force of the image forming device, and the separation force is transmitted to the force-applying part through the separation component to drive the box body to move, so that the developing roller and the photosensitive drum can be separated from the abutment, avoiding the need to provide a structure for receiving the separation force at both ends of the box body, simplifying the structure of the developing box, and the separation force of the image forming device is transmitted from the force-bearing part to the force-applying part, which is not easy to cause hard contact of the separation force receiving part, and is conducive to cost saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] Figure 1 is a schematic structural diagram of a developing cartridge in Embodiment 1;

[0063] Figure 2 is a schematic structural diagram of the hidden protective cover at the first end of the developing box in the first embodiment;

[0064] Figure 3 is a schematic structural diagram of the first end of the developing cartridge in the first embodiment;

[0065] Figure 4 is a schematic structural diagram of the first protective cover in the first embodiment;

[0066] Figure 5 is a structural diagram of the second end in the first embodiment;

[0067] Figure 6 is a structural schematic diagram of the bearing in the first embodiment;

[0068] Figure 7 is an exploded view of the developing cartridge in the first embodiment;

[0069] Figure 8 is a schematic structural diagram of the developing cartridge in Embodiment 1 from another perspective;

[0070] Fig. 9 is a schematic structural diagram of the separation component in the first embodiment when the separation force is not received;

[0071] Fig.10 is a schematic diagram of the structure of the separation component receiving the separation force in the first embodiment;

[0072] Fig.11 is a schematic structural diagram of a developing cartridge in Embodiment 2;

[0073] Fig.12 is a schematic diagram of the structure of the separation component in the second embodiment;

[0074] Fig.13 is a cross-sectional view of the separation assembly and the developing roller in the second embodiment;

[0075] Fig.14 is a side view of the developing cartridge in the second embodiment;

[0076] Fig.15 is a schematic structural diagram of the separation component in the second embodiment when no separation force is received;

[0077] Fig.16 is a schematic diagram of the structure of the separation component receiving the separation force in the second embodiment;

[0078] Fig.17 is a schematic structural diagram of a developing cartridge in Embodiment 3;

[0079] Fig.18 is an exploded view of the second end of the developing cartridge in Embodiment 3;

[0080] Fig.19 is a schematic structural diagram of the bearing in the third embodiment;

[0081] Fig. 20 is a schematic structural diagram of a developing cartridge in Embodiment 4;

[0082] Fig.21is a schematic structural diagram of the second end of the developing cartridge in the fourth embodiment;

[0083] Fig. 22 It is an exploded view of the second end of the developing box in the fourth embodiment.

[0084] Fig.23 is a schematic diagram of the three-dimensional structure of the developing box in the fifth embodiment;

[0085] Fig.24 is a schematic diagram of the exploded structure of the separation component of the developing cartridge in the fifth embodiment;

[0086] Fig.25 is a schematic diagram of the three-dimensional structure when the developing cartridge is assembled to the drum assembly in the fifth embodiment;

[0087] Fig.26 It is a left side view of the fifth embodiment when the developing cartridge is assembled on the drum assembly and the developing roller is in contact with the photosensitive drum;

[0088] Fig. 27 It is a left side view of the fifth embodiment when the developing cartridge is assembled to the drum assembly and the developing roller is separated from the photosensitive drum;

[0089] Fig.28 is a schematic diagram of the three-dimensional structure of the second end of the box body of the developing box in the sixth embodiment;

[0090] Fig.29 is a schematic diagram of the exploded structure of the separation component in Example 6;

[0091] Fig.30 It is a left side view of the developing cartridge in Embodiment 6 when it is assembled on the drum assembly and the developing roller is in contact with the photosensitive drum;

[0092] Fig.31 It is a left side view of the sixth embodiment when the developing cartridge is assembled to the drum assembly and the developing roller is separated from the photosensitive drum;

[0093] Fig.32 is a schematic diagram of the three-dimensional structure of the second end of the box body of the developing box in the seventh embodiment;

[0094] Fig.33 is a schematic diagram of the exploded structure of the separation component in Embodiment 7;

[0095] Fig.34 is a schematic diagram of the exploded structure of the separation component in Embodiment 7 from another angle;

[0096] Fig.35 It is a left side view of the developing cartridge in the seventh embodiment when it is assembled on the drum assembly and the developing roller is in contact with the photosensitive drum;

[0097] Fig.36It is a left side view of the developing box in the seventh embodiment when it is assembled on the drum assembly and the developing roller is separated from the photosensitive drum;

[0098] Fig.37 It is a left side view of another embodiment of the seventh embodiment when the developing cartridge is assembled on the drum assembly and the developing roller is in contact with the photosensitive drum;

[0099] Fig.38 It is a left side view of another embodiment of the developing cartridge in the seventh embodiment when it is assembled on the drum assembly and the developing roller is separated from the photosensitive drum;

[0100] Fig.39 is a schematic diagram of the three-dimensional structure of the developing box in the eighth embodiment;

[0101] Fig.40 is a schematic diagram of the exploded structure of the separation assembly of the developing cartridge in the eighth embodiment;

[0102] Fig.41 It is a left side view of the developing cartridge in the eighth embodiment when it is assembled on the drum assembly and the developing roller is in contact with the photosensitive drum;

[0103] Fig.42 is a schematic diagram of the three-dimensional structure when the developing cartridge is assembled to the drum assembly in Embodiment 9;

[0104] Fig.43 It is a left side view of the developing cartridge in Embodiment 9 when it is assembled on the drum assembly and the developing roller is in contact with the photosensitive drum;

[0105] Fig.44 It is a left side view of the developing cartridge in Embodiment 9 when it is assembled on the drum assembly and the developing roller is separated from the photosensitive drum;

[0106] Fig.45 is a schematic diagram of the three-dimensional structure of the developing cartridge in the embodiment 10 when it is assembled to the drum assembly;

[0107] Fig.46 It is a left side view of the developing cartridge in the tenth embodiment when it is assembled on the drum assembly and the developing roller is in contact with the photosensitive drum;

[0108] Fig.47 It is a left side view of the developing cartridge in the tenth embodiment when it is assembled on the drum assembly and the developing roller is separated from the photosensitive drum;

[0109] Fig.48 This is another implementation of the swing rod in Example 10;

[0110] Fig.49 It is a three-dimensional structural schematic diagram of the eleventh embodiment in which the developing cartridge is assembled to the drum assembly and the developing roller is in contact with the photosensitive drum;

[0111] Fig.50 It is a three-dimensional structural schematic diagram of the eleventh embodiment in which the developing cartridge is assembled to the drum assembly and the developing roller and the photosensitive drum are separated;

[0112] Fig.51 It is a left side view of the developing cartridge in the eleventh embodiment when it is assembled on the drum assembly and the developing roller is in contact with the photosensitive drum;

[0113] Fig.52 It is a left side view of the developing box in the eleventh embodiment when it is assembled on the drum assembly and the developing roller is separated from the photosensitive drum;

[0114] Fig.53 is a schematic structural diagram of the first end of the developing cartridge in the twelfth embodiment;

[0115] Fig.54 It is an exploded view of the first end of the developing box in the twelfth embodiment. DETAILED DESCRIPTION

[0116] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0117] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0118] The utility model relates to a developing box which is detachably installed in a drum assembly of an image forming device. The image forming device includes, for example, an electronic photographic copier, an electronic photographic printer (LED printer, laser printer, etc.), an electronic photographic printer-type fax machine, etc.

[0119] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0120] Embodiment 1

[0121] like Figure 1-Figure 10 As shown, Figure 1 The developing box 1 according to one embodiment of the present invention is schematically shown. Figure 1As shown, the length direction of the developing box 1 is the left-right direction, the first direction is the left-right direction, the width direction of the developing box 1 is the front-back direction (second direction), and the height direction of the developing box 1 is the up-down direction (third direction), and the three directions intersect each other, preferably orthogonal. The developing box 1 is detachably mounted on the drum assembly of the image forming device, and the drum assembly is provided with a separation member 101 for applying a separation force and a photosensitive drum for forming an electrostatic latent image. The developing box 1 includes a box body 10, an identification assembly, a developing assembly, a transmission assembly, and a first protective cover 111.

[0122] The box body 10 is roughly rectangular in shape, and has a housing cavity for accommodating developer (such as toner) in the box body 10. In the left and right directions of the box body 10, there are a first end 11 (left side) and a second end 12 (right side) arranged oppositely, and in the front and rear directions, there are a third end 13 (front side) and a fourth end 14 (rear side) arranged oppositely, and in the up and down directions, there are a fifth end 15 (upper side) and a sixth end 16 (lower side) arranged oppositely, and the fifth end 15 is provided with a friction portion 151, and the friction portion 151 is provided with a plurality of ribs extending in the left and right directions, and the friction portion 151 is used to facilitate the user to pick up the developer box 1. The second end 12 of the box body 10 is provided with a powder filling port, and the powder filling port is used to fill the developer into the box body 10. In order to prevent the developer from leaking, a powder filling cover 126 matching the powder filling port is provided to seal the powder filling port. The second end 12 is also provided with a locked member (not shown). When the developing roller 131 is installed in the drum assembly, the locked member can be locked by the drum assembly to prevent the developing cartridge 1 from being separated. The transmission assembly is located at the first end 11 of the box body 10, and is used to receive the power output by the image forming device so that the developing assembly in the developing cartridge 1 is driven to rotate. The first protective cover 111 is detachably fixedly mounted on the first end 11 of the box body 10, and the first protective cover 111 at least covers part of the transmission assembly, and the first protective cover 111 is used to protect the transmission assembly.

[0123] like Figure 1 , Figure 3As shown, the identification component is located at the first end 11 of the box 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 be provided with a 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 can move relative to the box body 10. The storage medium 113 is detachably mounted on the bracket 112 and can move relative to the box body 10 with the bracket 112. In some embodiments, the bracket 112 and the first protective cover 111 are integrally formed, and the storage medium 113 can be directly mounted on the first protective cover 111. The storage medium 113 is used to store information of the developing box 1. When the developing box 1 is installed in the image forming device, the information is transmitted to the image forming device, so that the developing box 1 is recognized 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 can be electrically connected separately through an intermediate piece. In some embodiments, the bracket 112 may be fixedly connected to the box body 10 (not moving relative to the box body 10 ), thereby preventing the storage medium 113 from moving relative to the box body 10 .

[0124] The developing assembly includes a developing roller 131, a stirring frame (not shown), a powder feeding roller (not shown) and a powder discharge knife 132. The developing roller 131, the stirring frame and the powder feeding roller are rotatably supported by the box body 10. The rotation axes of the developing roller 131, the stirring frame and the powder feeding roller extend in the left-right direction (first direction). The powder feeding roller is arranged adjacent to the developing roller 131. The powder feeding roller is used to transfer the developer to the developing roller 131. In the front-to-back direction (second direction), the developing roller 131 is closer to the third end 13 (front side) than the powder feeding roller. The developing roller 131 is used to contact the photosensitive drum of the drum assembly to transfer the developer to the photosensitive drum. When the developing box 1 is installed on the drum assembly and located in the image forming device, the gravity direction of the developing box 1 is the direction in which the developing roller 131 approaches the photosensitive drum. The stirring frame is used to stir the developer in the developing chamber to generate friction in the developer to prevent the developer from agglomerating. The powder discharge knife 132 is disposed adjacent to the developing roller 131 . The powder discharge knife 132 extends along a first direction. The powder discharge knife 132 is used to abut against the developing roller 131 to control the thickness of the developer layer on the developing roller 131 .

[0125] The second end 12 of the box body 10 is also provided with a bearing 121, and the bearing 121 includes a first hole 123 and a second hole 124. The first hole 123 and the second hole 124 can be through holes or blind holes. In the present embodiment, they are preferably through holes. The developing roller 131 is inserted into the first hole 123 from right to left in the left-right direction, and the powder feeding roller is inserted into the second hole 124 from right to left in the left-right direction, that is, the bearing 121 rotatably supports the developing roller 131 and the powder feeding roller and is located at one end of the second end 12 in the left-right direction. When observed along the left-right direction, the bearing 121 and the powder filling cover 126 do not overlap.

[0126] like Figure 2 As shown, the transmission assembly is arranged at the first end 11, and the transmission assembly includes a driving part, a developing gear 41, a powder feeding gear 42, a first idler gear 43, a stirring gear 45 and a second idler gear. The driving part includes a power receiving part 40 and a driving gear 44, which can be integrally formed or combined. In the left-right direction, the driving gear 44 is closer to the first end 11 than the power receiving part 40. The power receiving part 40 is a groove structure that is recessed inward along the left-right direction, and a driven protrusion is arranged in the groove. The power receiving part 40 is used to receive the power output by the image forming device, thereby driving the driving gear 44 to rotate, so as to serve as the power source of the transmission assembly.

[0127] The developing gear 41 is coaxially arranged on the developing roller 131, the powder feeding gear 42 is coaxially arranged on the powder feeding gear, and the stirring gear 45 is coaxially arranged on the stirring frame. The powder feeding gear 42 is meshed with the driving gear 44 to receive power and drive the powder feeding roller to rotate. The first idler gear 43 is meshed with the powder feeding gear 42 and the developing gear 41 at the same time to receive power and transmit the power to the developing gear 41, so that the developing gear 41 drives the developing roller 131 to rotate. 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 away from the first end 11 than the small-diameter second idler gear 462 in the left-right direction. The large-diameter second idler gear 461 is meshed with the driving gear 44 to receive power and rotate, and the small-diameter second idler gear 462 is meshed with the stirring gear 45 so that the stirring gear 45 receives power and rotates. In the front-back 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 driving gear 44. The developing gear 41 is coaxially mounted on the developing roller 131 and exposed to the first end 11, and drives the developing roller 131 to rotate when receiving power. The powder feeding gear 42 is coaxially mounted on the powder feeding roller and exposed to the first end 11, and drives the powder feeding roller to rotate when receiving power. The stirring gear 45 is coaxially mounted on the stirring frame and exposed to the first end 11, and drives the stirring frame to rotate when receiving power. When the power receiving part 40 receives power from the image forming device, the developing roller 131 abuts against the photosensitive drum and can be driven to rotate relative to realize an electrostatic latent image. This embodiment does not limit the number of gears and the meshing relationship of the transmission assembly, and can be set according to actual needs.

[0128] Among them, Figure 3 , 5 As shown in Figures 6, before the developing box 1 enters the developing working state, the developing box 1 needs to receive the pushing force applied by the drum assembly so that the developing roller 131 and the photosensitive drum can be closely abutted to perform the developing work. Therefore, the developing box 1 also includes a first pushing member 114 and a second pushing member 122 for receiving the pushing force applied by the drum assembly.

[0129] Specifically, the first forcing member 114 adopts a block structure, and can be installed on the first protective cover 111 in a detachable or integrally formed manner, and is exposed on the right side of the first protective cover 111. The first forcing member 114 has a forcing surface opposite to the developing roller 131, and is used to receive the forcing force applied by the drum assembly. It can be seen that the first forcing member 114 is located at the first end 11 of the driving box body 10 and is used to force the developing roller 131 to abut against the photosensitive drum. In addition, the first protective cover 111 is also provided with a protective cover through hole 1112, which penetrates the first protective cover 111 in the left-right direction. The protective cover through hole 1112 is used to expose the power receiving part 40 so that the power receiving part 40 receives the power output by the image forming device. The projection of the first forcing member 114 in the left-right direction does not overlap with the projection of the protective cover through hole 1112.

[0130] The second forced pushing member 122 is arranged on the bearing 121 located at the second end 12 of the box body 10. In this embodiment, the second forced pushing member 122 is formed integrally with the bearing 121. In other embodiments, the two can be a split combination. The second forced pushing member 122 has the same structure as the first forced pushing member 114, and also has a forced pushing surface opposite to the developing roller 131 and is used to receive the forced pushing force applied by the drum assembly. In this embodiment, the first forced pushing member 114 and the second forced pushing member 122 are preferably arranged to overlap in the left and right directions, and may not be arranged to overlap in other embodiments. It can be known that the second forced pushing member 122 is located at the second end 12 of the driving box body 10 to force the developing roller 131 to abut against the photosensitive drum. The first forced pushing member 114 and the second forced pushing member 122 simultaneously receive the forced pushing force to make the box body 10 move and make the developing roller 131 closely abut against the photosensitive drum. In addition, the second forced pushing member 122 is also an electrode that receives an external voltage in this embodiment. The second forced pushing member 122 receives the voltage and is electrically connected to the developing roller 131 and the powder feeding roller to transmit the voltage. In this embodiment, the entire bearing 121 is preferably made of conductive material. In some embodiments, the second pushing member 122 may be electrically connected to the developing roller 131 and the powder feeding roller through a conductive member such as a steel sheet. When the developing box 1 is in a non-developing working state, the developing roller 131 and the photosensitive drum need to be separated from each other to avoid damage caused by long-term contact. In this embodiment, the developing box 1 also includes a separation component, which is used to separate the developing roller 131 and the photosensitive drum from contact, wherein the separation component has a force-bearing portion and a force-applying portion, and the force-bearing portion is arranged on a single side of the box body 10, such as the first end 11 or the second end 12; in this embodiment, the force-bearing portion is located at the first end 11, and the force-bearing portion is used to receive an external separation force, and the force-applying portion is located at the second end 12 of the box body 10, and is used to receive the separation force transmitted from the force-bearing portion and drive the box body 10 to move, so as to separate the developing roller 131 from the photosensitive drum.

[0131] Specifically, Figure 7 , Figure 8As shown, the separation assembly includes a force-bearing member 31, a force-applying member 32 and a transmission member. The force-bearing member 31 adopts a slider structure and is movably arranged at the first end 11. In this embodiment, as shown in FIG. Figure 4 As shown, a first guide rail 1111 is provided on the first protective cover 111. The first guide rail 1111 may be formed integrally with the first protective cover 111 or may be formed by a combination of separate parts. In some embodiments, the first guide rail 1111 may also be directly mounted on the box body 10. The first guide rail 1111 extends in a direction away from the developing roller 131, and its extending direction intersects with the front-to-back direction and the up-and-down direction. The force-bearing member 31 is movably arranged in the first guide rail 1111, and moves relative to the box body 10 along the extending direction of the first guide rail 1111. The component 31 includes a first force-bearing surface 311 and a first force-applying surface 312. The first force-bearing surface 311 and the first force-applying surface 312 may be inclined surfaces or curved surfaces. In this embodiment, inclined surfaces are preferred. The extension directions of the first force-bearing surface 311 and the first force-applying surface 312 intersect. The first force-bearing surface 311 extends backward in the front-to-back direction and upward in the up-down direction. The first force-applying surface 312 extends backward in the front-to-back direction and rightward in the left-to-right direction. In the front-to-back direction, the first force-bearing surface 311 is closer to the developing roller 131 than the first force-applying surface 312. Among them, the first force-bearing surface 311 is a force-bearing portion.

[0132] The force-applying member 32 is movably arranged at the second end 12, and adopts a slider structure. In the present embodiment, a second guide rail 125 is also arranged on the bearing 121. The second guide rail 125 can be integrally formed with the bearing 121 or can be formed by a combination of separate parts, or can be directly arranged on the box body 10. The second guide rail 125 extends in a direction close to the developing roller 131, and the extension direction of the second guide rail 125 intersects with the front-to-back direction and the up-and-down direction. In the present embodiment, the projection of the first guide rail 1111 in the left-right direction is not completely overlapped with the projection of the second guide rail 125, and in other embodiments, the two can be completely overlapped. The force-applying member 32 is movably arranged in the second guide rail 125, and moves relative to the box body 10 along the extension direction of the second guide rail 125. The force-applying member 32 includes a second force-applying surface 321 and a second force-bearing surface 322. The second force-applying surface 321 and the second force-bearing surface 322 may be inclined surfaces or curved surfaces. In this embodiment, an inclined surface is preferred. In some embodiments, the second force-applying surface 321 may be an end surface. In the front-to-back direction, the second force-applying surface 321 is closer to the developing roller 131 than the second force-bearing surface 322. The extension direction of the second force-applying surface 321 intersects with the extension direction of the second force-bearing surface 322. The second force-applying surface 321 extends backward in the front-to-back direction and extends upward in the up-down direction. The second force-bearing surface 322 extends forward in the front-to-back direction and extends rightward in the left-right direction. It can be seen that the second force-bearing surface 322 is arranged opposite to the first force-applying surface 312. Among them, the second force-applying surface 321 is a force-applying portion.

[0133] The transmission member is a transmission rod 33, which is preferably a translation rod in this embodiment, and is movably arranged on the box body 10. A mounting groove is provided at the fifth end 15 of the box body 10, and the mounting groove extends along the left-right direction. The transmission rod 33 is movably installed in the mounting groove. The transmission rod 33 extends along the left-right direction. The transmission rod 33 includes a force-bearing end 331 and a force-applying end 332. The force-bearing end 331 (right side) and the force-applying end 332 (left side) are respectively located at the two ends of the transmission rod 33 in the left-right direction. In this embodiment, the force-applying end 332 is bent roughly in the up-down direction on the basis of the extension of the transmission rod 33 in the left-right direction, and may not be bent in other embodiments. The force-bearing end 331 is used to abut against the first force-applying surface 312 on the force-bearing member 31, and the force-applying end 332 is used to abut against the second force-bearing surface 322 on the force-applying member 32.

[0134] Working principle: Fig. 9 , Fig.10 As shown, when the image forming device issues a separation instruction, the separation member 101 on the drum assembly abuts against the first force-bearing surface 311 of the force-bearing member 31 and continuously applies a separation force to the force-bearing member 31, so that the force-bearing member 31 slides relative to the box body 10 in the first guide rail 1111 in a direction away from the developing roller 131, and the first force-applying surface 312 on the force-bearing member 31 abuts against the force-bearing end 331 of the transmission rod 33, so that the transmission rod 33 moves leftward relative to the box body 10 in the left-right direction, and then the force-applying end 332 of the transmission rod 33 applies a separation force to the second force-bearing surface 322 on the force-applying member 32, so that the force-applying member 32 moves closer to the developing roller 131. The direction of the roller 131 moves relative to the box body 10, and the second force-applying surface 321 abuts against the drum assembly, so that the box body 10 moves relative to the drum assembly in a direction away from the photosensitive drum, thereby realizing the separation of the developing roller 131 and the photosensitive drum, that is, in this embodiment, the force-bearing part is movably arranged at the first end 11 to receive the separation force to move the force-bearing part 31, and the force-applying part is movably arranged at the second end 12, and the second force-applying surface 321 acts on the drum assembly to generate a reaction force and acts on the box body 10, so that the box body 10 moves, so that the box body 10 moves in a direction away from the photosensitive drum, thereby driving the developing roller 131 to move and disengage from the abutment with the photosensitive drum.

[0135] When the developing roller 131 and the photosensitive drum need to contact again, the separating member 101 on the drum assembly no longer resists the force-receiving member 31. Under the action of the first pushing member 114 and the second pushing member 122 receiving the pushing force applied by the drum assembly, the developing box 1 moves toward the direction close to the photosensitive drum, and the drum assembly applies a reaction force to the force-applying member 32, so that the force-applying member 32 moves toward the direction away from the developing roller 131. The second force-bearing surface 322 applies a reaction force to the transmission rod 33 so that the transmission rod 33 moves to the right, and the transmission rod 33 applies a reaction force to the first force-applying surface 312 so that the force-bearing member 31 moves toward the direction close to the developing roller 131, that is, the force-bearing member 31, the force-applying member 32 and the transmission rod 33 are reset to the position when they do not receive the separating force. Alternatively, the box body 10 falls back to the position where the developing roller 131 is in close contact with the photosensitive drum 65 under the action of its own gravity.

[0136] Further, such as Fig. 9 As shown, the force-applying member 32 also includes a reset portion, which protrudes from the second end 12 in the left-right direction. A reset force-bearing surface is arranged on the reset portion, and the reset force-bearing surface is arranged toward the developing roller 131. When the forced pushing force received by the first pushing member 114 and the second pushing member 122 is insufficient to reset the force-bearing member 31, the force-applying member 32 and the transmission rod 33, the reset force provided by the image forming device can be used. Specifically, the image forming device is provided with a reset rod (not shown) near the second end 12, which is a rocker rod structure. In the front-to-back direction, the reset rod is closer to the developing roller 131 than the reset portion. When the developing box 1 moves away from the photosensitive drum, the reset rod swings toward the direction close to the developing roller 131, and the reset rod does not contact the reset portion. When the developing box 1 moves toward the photosensitive drum, the reset rod swings toward the direction away from the developing roller 131, the reset rod abuts on the reset portion, and the reset force-bearing surface receives the reset force provided by the reset rod, so that the force-applying member 32 moves along the second guide rail 125 toward the direction away from the developing roller 131, thereby driving the separation assembly to reset. If the urging force received by the first urging member 114 and the second urging member 122 is sufficient to reset the separation assembly, the reset portion may not be provided.

[0137] In some embodiments, a reset elastic member is further provided on the box body 10, and the reset elastic member can be provided at the first end 11 or the second end 12. When the separation force is not received, the reset elastic member is in an energy storage state. When the separation force is received, the components in the separation assembly trigger the reset elastic member to release elastic potential energy. Specifically, the movement of the force-bearing member 31 can trigger the reset elastic member to release elastic potential energy. The reset elastic member acts on the force-bearing member 31 or the transmission rod 33, so that the transmission rod 33 can better trigger the movement of the force-applying member 32. Alternatively, the reset elastic member can act on the force-applying member 32 to help the force-applying member 32 move toward the direction close to the developing roller 131.

[0138] Embodiment 2

[0139] like Figure 11-Figure 16 As shown, the structure of the developing box 1 of this embodiment is mostly the same as that of the embodiment 1, except that the structure of the separation component of this embodiment is different. The separation component of this embodiment mainly uses rotational force to move the box body 10 and drive the developing roller 131 to separate from the photosensitive drum.

[0140] like Fig.12 As shown, the separation assembly in this embodiment includes a force-bearing member 35, a force-applying member 36 and a transmission member. The force-bearing member 35 is arranged at the first end 11 and has a cylindrical structure. The force-bearing member 35 has a force-bearing protrusion 351, which protrudes along the left and right directions and is exposed to the first end 11. The force-bearing protrusion 351 is used to receive the separation force applied by the drum assembly so as to drive the force-bearing member 35 to rotate. It can be seen that the force-bearing protrusion 351 in this embodiment is a force-bearing part. The force-applying member 36 is located at the second end 12 and has a cylindrical structure. The force-applying member 36 includes a force-applying protrusion 361, which protrudes along the radial direction of the force-applying member 36. The force-applying protrusion 361 is in an arc shape and is used to abut against the drum assembly. The force-applying member 36 can receive the separation force transmitted by the force-bearing member 35 through the transmission rod 37 and rotate. It can be seen that the force-applying protrusion 361 in this embodiment is a force-applying part. That is, the transmission rod 37 serving as a transmission member in this embodiment is a rotating rod, and the transmission rod 37 transmits the separation force by rotating.

[0141] Among them, Fig.13 As shown, in this embodiment, the inside of the developing roller 131 has a hollow portion extending in the left-right direction, and the transmission rod 37 extends in the left-right direction. The transmission rod 37 is arranged in the hollow inside of the developing roller 131. When the developing roller 131 rotates to transfer the developer to the photosensitive drum, the transmission rod 37 does not rotate with the developing roller 131. It can be understood that the inner wall of the developing roller 131 can rotate relative to the transmission rod 37. One end of the transmission rod 37 in the left-right direction is fixedly connected to the force-bearing member 35, and the other end of the transmission rod 37 in the left-right direction is fixedly connected to the force-applying member 36. Optionally, the transmission rod 37 is connected to the force-bearing member 35 and the force-applying member 36 by assembly, and the three can also be designed as an integral molding, and the three can rotate together.

[0142] Working principle: Fig.15 , Fig.16 As shown, when the drum assembly applies a separation force to the box body 10, the separation member 101 on the drum assembly applies a separation force to the force-bearing member 35, and the separation member 101 abuts against the force-bearing protrusion 351, so that the force-bearing protrusion 351 rotates and drives the force-bearing member 35 to rotate in the clockwise direction C ( Fig.14 Perspective, this paragraph is based on Fig.14As the transmission rod 37 rotates along the clockwise direction, the driving rod 37 is driven to rotate in the clockwise direction, so that the force-applying member 36 at the second end 12 rotates along with the transmission rod 37. The force-applying protrusion 361 rotates in the clockwise direction and begins to abut against the drum assembly, and generates a reaction force. As the transmission rod 37 continues to rotate along with the force-applying protrusion 351, the force-applying protrusion 361 continuously abuts against the drum assembly and drives the box body 10 to move in the direction away from the photosensitive drum through the reaction force, so as to realize the separation of the developing roller 131 and the photosensitive drum.

[0143] When the developing roller 131 and the photosensitive drum need to contact again, the separating member 101 no longer abuts against the force-bearing member 35, and under the action of the first pushing member 114 and the second pushing member 122, the box body 10 moves toward the direction close to the photosensitive drum, and the force-applying member 36 drives the transmission rod 37 and the force-bearing member 35 to rotate counterclockwise under the reaction force to reset, so that the developing roller 131 and the photosensitive drum are in close contact.

[0144] Optionally, if the forced pushing force received by the first pushing member 114 and the second pushing member 122 is insufficient to cause the separation component to rotate counterclockwise and reset, a reset elastic member may be provided on the box body 10. The reset elastic member accumulates elastic potential energy when the separation component rotates clockwise. When the force-bearing member 35 no longer receives the separation force, the separation component rotates counterclockwise to reset under the action of the elastic potential energy of the reset elastic member, that is, the reset force of the separation component is increased by the elastic potential energy of the reset elastic member.

[0145] In addition, since the force-bearing member 35 and the force-applying member 36 have arc surfaces facing forward, during the process of installing the developing box 1 into the drum assembly, the force-bearing member 35 and the force-applying member 36 can also serve as guide members for guiding the installation of the developing box 1, so that the developing box 1 can be smoothly installed into the drum assembly.

[0146] Embodiment 3

[0147] like Figure 17-Figure 19 As shown, the developing box 1 of this embodiment has most of the same structures as those of the first embodiment, except that the structure of the separation assembly of this embodiment is different, and the force-bearing part and the force-applying part of this embodiment are both movably arranged at the second end 12 of the box body 10, and the force-applying part can abut against the drum assembly and generate a reaction force to drive the box body 10 to move.

[0148] Specifically, Fig.17 , Fig.18As shown, the separation assembly includes a first force-bearing member 51 and a force-applying member 52. The first force-bearing member 51 and the force-applying member 52 are movably arranged at the second end 12. The first force-bearing member 51 and the force-applying member 52 adopt a slider structure and can slide linearly relative to the box body 10. The linear sliding includes linear sliding and also includes curved and broken line sliding. The first force-bearing member 51 includes a force-bearing portion 511 (first force-bearing portion) and a transmission portion 512. In the front-to-back direction, the force-bearing portion 511 is farther away from the developing roller 131 than the transmission portion 512. The force-bearing portion 511 is a protruding structure protruding from the first force-bearing member 51 toward the right in the left-right direction. The force-bearing portion 511 can receive the separation force applied by the image forming device so as to move the first force-bearing member 51. Specifically, the side of the force-bearing portion 511 facing away from the developing roller 131 receives the separation force (first separation force) applied by the image forming device. The transmission portion 512 is specifically a force-applying surface, which may be an inclined surface or a curved surface. In this embodiment, it is preferably an inclined surface, and its extension direction intersects the front-to-back direction and the up-to-down direction. Specifically, it extends forward along the front-to-back direction and extends downward along the up-to-down direction, that is, its extension starting end is farther away from the developing roller 131 than the end end in the front-to-back direction.

[0149] The force-applying member 52 includes a receiving portion 521 and a force-applying portion 522. In the front-to-back direction, the receiving portion 521 is closer to the first force-bearing member 51 than the force-applying portion 522. When viewed in the front-to-back direction, the force-applying member 52 has an overlapping portion with the developing roller 131. The receiving portion 521 is specifically a force-bearing surface, which may be an inclined surface or a curved surface. In this embodiment, it is preferably an inclined surface, and its extension direction intersects with the front-to-back direction and the up-down direction, specifically extending forward in the front-to-back direction and extending upward in the up-down direction, that is, the extension direction of the transmission portion 512 intersects with the extension direction of the receiving portion 521, and the receiving portion 521 can receive the separation force applied by the first force-bearing member 51. In this embodiment, the force-applying portion 522 is preferably a convex arc surface, and in other embodiments, it may be an end surface, an inclined surface, or a curved surface. The force-applying portion 522 is arranged opposite to the receiving portion 521. The force-applying member 52 further includes a mounting portion 523, which is located between the receiving portion 521 and the force-applying portion 522. The mounting portion 523 adopts a hollow structure that penetrates in the left-right direction, which is a through hole that penetrates the force-applying member 52, and in some embodiments, it can also be a blind hole. An abutting portion is also provided at one end of the mounting portion 523 close to the receiving portion 521. The force-applying member 52 moves under the action of the first force-bearing member 51, specifically, the transmission portion 512 abuts against the receiving portion 521 to drive the force-applying member 52 to move. Optionally, the receiving portion 521 can also be an end surface.

[0150] Among them, Fig.19As shown, the second end 12 of the box body 10 is further provided with a first guide rail 541 and a second guide rail 542, specifically, the first guide rail 541 and the second guide rail 542 are arranged on the bearing 121, and optionally, the first guide rail 541 and the second guide rail 542 can also be directly arranged on the box body 10, and the extension direction of the first guide rail 541 and the second guide rail 542 corresponds to the moving direction of the first force-bearing member 51 and the force-applying member 52, respectively. The first guide rail 541 extends forward along the front-to-back direction and extends downward along the up-down direction, and the second guide rail 542 extends forward along the front-to-back direction and extends upward along the up-down direction, that is, the extension directions of the two intersect, and the first force-bearing member 51 and the force-applying member 52 are at least partially movably arranged in the first guide rail 541 and the second guide rail 542, and the first guide rail 541 and the second guide rail 542 are in contact. In this embodiment, the second forced pushing member 122 is a part of the second guide rail 542. The bearing 121 is also provided with a support portion 544, which has two through holes that penetrate the body in the front-to-back direction, the two through holes are arranged in the left-right direction and have a spacing in the left-to-right direction, and the support portion 544 also has a structure for connecting the two through holes, the left end of the developing roller 131 is inserted into the two through holes to be supported by the support portion 544, the mounting portion 523 of the force-applying member 52 is sleeved on the left end of the developing roller 131 and is located between the two through holes, so that the force-applying member 52 is limited by the two through holes in the left-right and upward directions, and the extension direction of the mounting portion 523 is the same as the extension direction of the second guide rail 542, that is, the mounting portion 523 can move relative to the developing roller 131 along the extension direction. In addition, the mounting portion 523 is sleeved on the support portion 544 so that the force-applying member 52 is limited in the second guide rail 542 to prevent the force-applying member 52 from being separated.

[0151] Working principle: When the image forming device applies a separation force to the developing box 1, the separating member 101 in the image forming device abuts against the force-bearing portion 511 of the force-bearing member, so that the first force-bearing member 51 moves along the second guide rail 541 toward the direction close to the developing roller 131, and the transmitting portion 512 of the first force-bearing member 51 abuts against the receiving portion 521 of the force-applying member 52 and moves relatively. Specifically, the transmitting portion 512 abuts against the receiving portion 521 with different parts of itself to make the force-applying member 52 move toward the direction close to the photosensitive drum of the drum assembly, so that the force-applying portion 522 abuts against the drum assembly to generate a reaction force, and the force-applying member 52 forces the box body 10 to move in the direction away from the photosensitive drum to drive the developing roller 131 and the photosensitive drum to separate.

[0152] When the developing roller 131 and the photosensitive drum need to contact again, the separating member 101 on the image forming device does not apply a separating force on the first force-bearing member 51, that is, the developing box 1 no longer receives the separating force applied by the image forming device, and under the action of the pushing member, the developing box 1 moves toward the photosensitive drum, and the force-applying member 52 moves away from the photosensitive drum (downward and backward) to disengage from the drum assembly, and the force-applying member 52 applies a reaction force to the first force-bearing member 51 to make the first force-bearing member 51 move away from the photosensitive drum (upward and backward), and then the separating assembly is reset to wait for the next separation force.

[0153] Optional, such as Fig.18 As shown, the second end 12 of the box body 10 is also provided with a reset elastic member 53, which can be an elastic medium such as a spring that can generate elastic deformation. The mounting portion 523 of the force-applying member 52 and the supporting portion 544 of the bearing 121 form a receiving space, and the reset elastic member 53 is installed in the receiving space. One end of the reset elastic member 53 abuts against the abutting portion 524 on the mounting portion 523, and the other end abuts against the supporting portion 544, that is, the reset elastic member 53 abuts between the mounting portion 523 and the supporting portion 544. When the image forming device applies a separation force and causes the force-applying member 52 to be forced to move in a direction close to the photosensitive drum, the reset elastic member 53 is compressed and accumulates elastic potential energy. When the image forming device no longer applies a separation force, the elastic potential energy of the reset elastic member 53 can help the force-applying member 52 move in a direction away from the photosensitive drum to reset, so as to increase the reset force of the force-applying member 52. If the forced pushing force received by the forced pushing member is sufficient to reset the separation assembly, the force-applying member 52 may not be provided.

[0154] In some embodiments, in order to prevent the first force-bearing member 51 and the force-applying member 52 from detaching from the bearing 121, a limit member may also be provided at the second end 12. After the first force-bearing member 51 and the force-applying member 52 are installed on the bearing 121, the limit member will limit the two. The limit member may be a component such as a snap to limit the first force-bearing member 51 and the force-applying member 52 in the direction of action.

[0155] The separation assembly further includes a second force-bearing member (not shown), which is fixedly disposed at the first end 11, extends in the first direction, and a second force-bearing portion on the second force-bearing member abuts against a component on the drum assembly to receive a second separation force, and the second force-bearing member receives the second separation force to drive the first end 11 of the box body 10 to move together with the second end 12. When viewed from the first direction, the first force-bearing portion and the second force-bearing portion at least partially do not overlap.

[0156] Embodiment 4

[0157] like Figure 20-22As shown, the developing box 1 of this embodiment has most of the same structures as those of the first embodiment, except that the structure of the separation component of this embodiment is different. The force-bearing portion of this embodiment is movably arranged at the second end 12 of the box body 10, and the force-bearing portion transfers the separation force to the force-applying portion to drive the box body 10 to move.

[0158] like Fig.21 , Fig. 22 As shown, the separation assembly of this embodiment is arranged at the second end 12 of the box body 10. In some embodiments, the separation assembly can also be arranged at the first end 11. The separation assembly includes a force-bearing member 55, a transmission member 561 and a force-applying member 562, which can be connected by an axial hole structure or formed in one piece.

[0159] The force-bearing member 55 adopts a slider structure, which is movably arranged on the box body 10. In this embodiment, the force-bearing member 55 adopts a plate-like structure and can move along a straight line. Optionally, a curved motion can also be adopted. The force-bearing member 55 includes a force-bearing surface 551 and a first connecting portion 552. The force-bearing surface 551 is a curved surface. In other embodiments, the force-bearing surface 551 can also be a straight surface. The first connecting portion 552 is specifically a hole structure. The connecting hole can be a through hole or a blind hole. In this embodiment, a blind hole is preferably used. The force-bearing surface 551 and the first connection portion 552 are respectively located on both sides of the force-bearing member 55, specifically, the force-bearing surface 551 is located on the side facing away from the developing roller 131 (the rear side of the force-bearing member 55), and the first connection portion 552 is located on the side facing the developing roller 131 (the front side of the force-bearing member 55). The force-bearing surface 551 is used to receive the separation force applied by the image forming device so that the force-bearing member moves relative to the box body 10. In this embodiment, the force-bearing surface 551 is the force-bearing portion, and the first connection portion 552 is used to connect with the transmission member 561. In this embodiment, the force-bearing surface 551 is the force-bearing portion.

[0160] The second end 12 of the box body 10 is provided with a first guide rail 571, and the first guide rail 571 is specifically arranged on the bearing 121. The first guide rail 571 can be straight or curved. In the present embodiment, it is preferably straight. The first guide rail 571 extends in a direction close to the developing roller 131, and its extension direction is roughly parallel to the front-to-back direction, or it can intersect with the front-to-back direction. The force-bearing member 55 is movably arranged in the force-bearing member 55, and the force-bearing member 55 can move along the first guide rail 571 after receiving the separation force.

[0161] like Fig. 22As shown, the transmission member 561 is a flexible member made of a flexible material, which is roughly in the shape of a strip. After the force-bearing member 55 abuts, it can make a curved motion relative to the box body 10 without deformation (maintaining its own shape). The above deformation includes only slight deformation. In other embodiments, the transmission member 561 can also be a medium such as a brake line that can make a curved motion without deformation. One end of the transmission member 561 is connected to the force-bearing member 55, and the other end is connected to the force-applying member 562, so that the force-bearing member 55 transmits the separation force to the force-applying member 562. In some embodiments, the transmission member 561 can directly serve as a force-applying member to directly apply the separation force to the box body 10, and the other end of the transmission member is a force-applying part.

[0162] The transmission member 561 includes a second connection portion 5611 and a third connection portion 5612, which are both ends of the connection member 561. The second connection portion 5611 is used to engage with the first connection portion 552 so that the force-bearing member 55 and the connection member 5615 are connected. Specifically, the second connection portion 5611 is inserted into the first connection portion 552. In some embodiments, the first connection portion 552 can also be a connection protrusion, and the second connection portion 5611 is a connection hole, and the two are connected to each other. The force-applying member 562 is made of a hard material with a block structure. The force-applying member 562 is provided with a fourth connection portion 5621, which is specifically a blind hole. The third connection portion 5612 is inserted into the fourth connection portion 5621 so that the connection member 561 and the force-applying block 562 are connected. In some embodiments, the fourth connection portion 5621 can also be a connection protrusion, and the third connection portion 5612 is a blind hole, and the two are connected to each other. The second end 12 of the box body 10 is further provided with a force-applied portion 127, which may be integrally formed with the box body 10 or mounted on the box body 10. The force-applied portion 127 is closer to the sixth end 16 in the vertical direction, and the force-applied portion 127 can abut against the force-applying member 562 to receive the separation force applied by the force-applying member 562. In this embodiment, the portion of the force-applying member 562 that abuts against the force-applied portion 127 is the force-applying portion.

[0163] The second end 12 of the box body 10 is provided with a second guide rail 572, which is specifically arranged on the bearing 121. The second guide rail 572 adopts a curved structure, and the second guide rail 572 is connected to the first guide rail 571. The second guide rail 572 bends and extends forward and downward to form a guide rail similar to an arc. The force member is movably arranged in the second guide rail 572, and specifically the transmission member 561 can make a curved motion along the second guide rail 572. Optionally, the second guide rail 572 can also be formed by connecting two or more sections of straight or curved guide rails. In other embodiments, the bearing 121 is also provided with a guide rail structure for slidably supporting the force member 562. It can be known that when the transmission member 561 receives the separation force transmitted by the force-bearing member 55 and makes a curved motion relative to the box body 10 and at the same time makes the force-applying member 562 abut against the force-applied portion 127 and drives the box body 10 to move, the box body 10 moves in a direction away from the photosensitive drum, thereby achieving the disengagement of the developing roller 131 and the photosensitive drum.

[0164] Furthermore, in order to facilitate the transmission member 561 to smoothly perform curved motion in the second guide rail 572, a mounting tube 58 is further provided in the second guide rail 572, and the mounting tube 58 is installed on the second guide rail 572 by gluing or welding, etc. The mounting tube 58 is arranged in close contact with the second guide rail 572, that is, the mounting tube 58 is fixedly supported by the second guide rail 572, and the transmission member 561 is movably installed in the mounting tube 58, and the extension curves of the transmission member 561, the second guide rail 572 and the mounting tube 58 are the same. In other embodiments, the mounting tube 58 may not be provided, and the transmission member 561 may be directly installed on the second guide rail 572, and a guide rail structure matching the transmission member 561 may be provided.

[0165] Working principle: When the image forming device starts to apply a separation force to the developer box 1, the separation member 101 in the image forming device abuts against the force-bearing surface 551 of the force-bearing member 55, so that the force-bearing member 55 slides on the first guide rail 571 in the direction close to the developing roller 131, and the force-bearing member 55 transfers the separation force to the transmission member 561, so that the transmission member 561 slides along the second guide rail 572, and the transmission member 561 transfers the separation force to the force-applying member 562, so that the force-applying member 562 abuts against the force-applied portion 127 to transfer the separation force to the box body 10. As the separation member 101 continues to apply the separation force, the force-bearing member 55 and the transmission member 561 slide on the first guide rail 571 and the second guide rail 572 relative to the box body 10 respectively, and the box body 10 continues to move in the direction away from the photosensitive drum, thereby causing the developing roller 131 and the photosensitive drum to break contact.

[0166] In this embodiment, the separation force toward the photosensitive drum is converted into a separation force away from the photosensitive drum by sliding in a sliding curve, and the separation force acts on the box body 10, so that the developing roller 131 and the photosensitive drum are separated.

[0167] When the developing roller 131 and the photosensitive drum need to contact again, the separating member 101 no longer abuts against the force-bearing member 55, and under the action of the pushing member, the box body 10 moves toward the direction close to the photosensitive drum, and the force-bearing member 55 and the force-applying member 531 move in opposite directions along the first guide rail 571 and the second guide rail 572 respectively, so that the separating assembly is reset and the developing roller 131 and the photosensitive drum are in close contact again.

[0168] In some embodiments, Fig. 20 As shown, if the forced pushing force received by the forced pushing member is not enough to reset the separation assembly, a reset elastic member 59 may be provided. The reset elastic member 59 may be a tension spring or a compression spring. In this embodiment, a compression spring is preferably provided. The reset elastic member 59 is sleeved on the second connecting portion 5611 of the transmission member 561. One end of the reset elastic member 59 abuts against the force-bearing member 55, and the other end abuts against the mounting tube 58, that is, the reset elastic member 59 is provided between the mounting tube 58 and the force-bearing member 55. When the separation assembly moves under the separation force, the reset elastic member 59 is compressed to accumulate elastic potential energy. When the separation assembly no longer receives the separation force, the reset elastic member 59 releases the elastic potential energy to reset the separation assembly. If the forced pushing force received by the forced pushing member is sufficient to reset the separation assembly, the reset elastic member 59 may not be provided.

[0169] Embodiment 5

[0170] like Figure 23-Figure 27 As shown, the developing box 1 of this embodiment has most of the same structures as those of the first embodiment, except that the structure of the separation component of this embodiment is different. The separation component of this embodiment is arranged at the second end 12 of the box body 10, the force-bearing part can move on the box body 10, and the force-applying part directly acts on the box body 10 after receiving the separation force transmitted by the force-bearing part to drive the box body 10 to move.

[0171] like Fig.23 , Fig.24As shown, the separation assembly includes a force-bearing member 61 and a force-applying member. The force-bearing member 61 is a block structure with a rack, the teeth of the force-bearing member 61 are located at the lower side, the force-bearing member 61 has a first sliding portion 611 and a force-bearing block 612, the first sliding portion 611 and the force-bearing block 612 are integrally formed with the force-bearing member 61, the first sliding portion 611 is a columnar structure protruding from the force-bearing member 61 toward the right along the left-right direction, the force-bearing block 612 is located on the upper side of the force-bearing member 61 for receiving the separation force of the image forming device, and in this embodiment, the force-bearing block 612 is the force-bearing portion. The second end 12 of the box body 10 is provided with a first guide rail 61a and a second guide rail 63a in parallel. The first guide rail 61a and the second guide rail 63a can be integrally formed on the second end 12 of the box body 10, or can be arranged on other parts and then assembled to the box body 10. In this embodiment, the first guide rail 61a and the second guide rail 63a are integrally formed on the bearing 121, and the first guide rail 61a and the second guide rail 63a extend approximately in the front and rear directions. The first sliding portion 611 is movably arranged in the first guide rail 61a, so that the force-bearing member 61 can move along the first guide rail 61a.

[0172] like Fig.24 As shown, the force applying member is a transmission wheel 63, which is rotatably arranged at the second end 12 of the box body 10. The transmission wheel 63 is specifically a gear structure. The transmission wheel 63 includes a second sliding portion 631 and a supporting protrusion 632. The second sliding portion 631 is located on the right side of the transmission wheel 63, and the supporting protrusion 632 is located on the left side of the transmission wheel 63. The teeth of the transmission wheel 63 are located between the second sliding portion 631 and the supporting protrusion 632. The second sliding portion 631 is movably arranged in the second guide rail 63a, so that the transmission wheel 63 can move on the box body 10, as shown in FIG. Fig.25 As shown, the drum assembly 6 is provided with a support groove 66, and the support protrusion 632 can abut against the support groove 66, so that the driving wheel 63 can be supported by the drum assembly 6. When the developing box 1 is installed on the drum assembly 6, the support protrusion 632 on the driving wheel 63 falls into the support groove 66 and is supported by the support groove 66. At this time, the gravity of the driving wheel 63 is applied to the drum assembly 6 instead of the box body 10. In order to reduce the wear of the support protrusion 632 on the drum assembly 6, the support protrusion 632 and the driving wheel 63 can be arranged to be rotatably connected, so that the support protrusion 632 is subjected to friction after being supported by the drum assembly 6 and will not rotate with the driving wheel 63, thereby avoiding the wear of the drum assembly 6. In this embodiment, the separation force is transmitted between the driving wheel 63 and the force-bearing member 61 by the gear rack meshing method.

[0173] The second end 12 of the box body 10 is provided with a coupling member 62. The coupling member 62 adopts a rack structure and is fixedly arranged on the lower side of the second guide rail 63a, that is, the second guide rail 63a is closer to the developing roller 131 than the second rack in the vertical direction. The coupling member 62 can be integrally formed on the second end 12 of the box body 10, or it can be arranged on other parts and then assembled to the box body 10. In this embodiment, the coupling member 62 is integrally formed on the bearing 121. The teeth of the force-bearing member 61 and the coupling member 62 are both meshed with the teeth of the transmission wheel 63, and the force-bearing member 61 and the coupling member 62 are respectively located on both sides of the transmission wheel 63 in the vertical direction, that is, in this embodiment, the transmission wheel 63 is the force-applying part, and the coupling member 62 is the force-applied part. Working principle: As Fig.26 , Fig. 27 As shown, when the image forming device issues a drum-roller separation instruction, the separation member 101 starts to move, so that the separation member 101 contacts the force block 612 and presses the force block 612 forward, so that the force member 61 moves downward from the first position to the second position, and the force member 61 drives the transmission wheel 63 to rotate clockwise, and the transmission wheel 63 drives the coupling member 62 to move backward. The coupling member 62 and the bearing 121 are integrally formed, and the bearing 121 is fixed on the box body 10. Therefore, the coupling member 62 drives the second end 12 of the box body 10 to move backward together, so that the developing roller 131 is out of contact with the photosensitive drum 65.

[0174] When the image forming device stops issuing the drum-roller separation command, that is, when the force-bearing member 61 no longer receives the separation force of the image forming device, pressure is no longer applied to the force-bearing block 612, so that the box body 10 falls back to the position where the developing roller 131 contacts the photosensitive drum 65 under the action of its own gravity and the thrust.

[0175] Embodiment 6

[0176] like Figure 28-Figure 31 As shown, the developer box 1 of this embodiment has most of the same structures as those of the first embodiment, except that the structure of the separation assembly of this embodiment is different.

[0177] like Fig.28 , Fig.29As shown, the separation assembly includes a movable member 67 and a support member 68, and the movable member 67 includes a sliding portion 671 and a flexible member 672, which can be a separate combination or an integral formation. The sliding portion 671 adopts a slider structure, which is located on the right side of the movable member 67. The second end 12 of the box body 10 is provided with a first guide rail 67a, and the extension direction of the first guide rail 67a intersects with the front-to-back direction. The sliding portion 671 is movably arranged on the first guide rail 67a, so that the sliding portion 671 can be displaced relative to the box body 10 in the front-to-back direction. The flexible member 672 can be a flexible part such as a wire rope or a nylon rope. The second end 12 of the box body 10 is also provided with a hook portion 104, which is specifically designed to be integrally formed with the box body 10, and can also be arranged on the bearing 121. One end of the flexible member 672 is connected to the hook portion 104, and the other end of the flexible member 672 is fixedly connected to the sliding portion 671. It can be seen that the sliding part 671 is a force-bearing member, and the part of the sliding part 671 that is abutted by the image forming device to receive the separation force is the force-bearing part, and the sliding part 671 can move along the first guide rail 67a and drive the flexible member 572 to move. In this embodiment, the hook 104 is the force-applied part, the flexible member 672 is the force-applying member, and the end of the flexible member 672 connected to the hook 104 is the force-applying part.

[0178] like Fig.29 As shown, the support member 68 adopts a slider structure, which is movably arranged at the second end 12 of the box body 10. The second end 12 of the box body 10 is also provided with a second guide rail 68a, which extends in the front-to-back direction. The extension direction of the second guide rail 68a is not parallel to the extension direction of the first guide rail 67a. A support sliding portion 683 is provided on the right side of the support member 68. The support member 68 is movably arranged in the second guide rail 68a through the support sliding portion 683. The support member 68 is relatively provided with a first surface 681 and a second surface 682 in the front-to-back direction. Both are arc end surface structures. In the front-to-back direction, the hook portion 104 is closer to the developing roller 131 than the first surface 681. In the up-down direction, the support member 68 is located between the hook portion 104 and the first guide rail 67a. Part of the flexible member 672 can abut against the first surface 681 and can slide relative to the first surface 681. The second surface 682 can abut against the support groove 66 of the drum assembly 6. Fig.30 As shown, when the developing box 1 is installed on the drum assembly 6, the second surface 682 of the support member 68 contacts the support groove 66 on the drum assembly 6 so that the support member 68 is supported by the drum assembly 6, that is, the gravity of the support member 68 is applied to the drum assembly 6 rather than the box body 10.

[0179] Working principle: Fig.30 , Fig.31As shown, when the image forming device issues an instruction to separate the drum and roller, the separation member 101 applies a separation force to the movable member 67, so that the sliding portion 671 moves from the first position to the second position along the first guide rail 67a, thereby pulling the flexible member 672. The flexible member 672 is supported by the support member 68 and bends, so that the end of the flexible member 672 connected to the movable member 67 is displaced downward in the front-to-back direction as the movable member 67 moves, and the end of the flexible member 672 connected to the hook portion 104 pulls the box body 10 to displace backward in the front-to-back direction, and the support member 68 and the box body 10 move relative to each other, so that the hook portion 104 drives the box body 10 and the developing roller 131 to displace as a whole, so that the developing roller 131 is out of contact with the photosensitive drum 65, thereby realizing the same drum and roller separation function as in Example 3. The specific contact process between the developing roller 131 and the photosensitive drum 65 is the same as in Example 5 and will not be repeated.

[0180] Embodiment 7

[0181] like Figure 32-Figure 38 As shown, the developing box 1 of this embodiment has most of the same structures as those of the first embodiment, except that the structure of the separation component of this embodiment is different. The separation component of this embodiment is arranged at the second end 12 of the box body 10, and the magnetic principle is used to enable the box body 10 to move.

[0182] like Figure 32-34 As shown, the separation component of this embodiment includes a force-bearing member 71, a force-applying member 72, a first elastic member 73 and a second elastic member 74. The force-bearing member 71 is movably arranged at the second end 12 of the box body 10. The force-bearing member 71 has a force-bearing protrusion 711, which protrudes from the left side of the force-bearing member 71 and is used to receive the separation force of the image forming device. In this embodiment, the force-bearing protrusion 711 is a force-bearing part. A first magnetic member 712 is fixedly arranged on the force-bearing member 71, and the first magnetic member 712 is exposed on the left side of the force-bearing member 71. The force-bearing member 71 is also provided with a first sliding portion 713, which protrudes from the right side of the force-bearing member 71 and is arranged opposite to the first magnetic member 712. The design comprises a first guide rail 71a provided at the second end 12 of the box body 10, and the first guide rail 71a is integrally arranged on the box body 10. An assembled design may also be adopted. The force-bearing member 71 can move along the first guide rail 71a. Specifically, the first sliding portion 713 is movably arranged in the first guide rail 71a, and the second elastic member 74 is arranged in the first guide rail 71a. The second elastic member 74 is preferably a spring, and the two ends of the second elastic member 74 respectively abut against the first sliding portion 713 and the inner wall of the first guide rail 71a. When the force-bearing member 71 moves forward along the first guide rail 71a under the separation force, the second elastic member 74 is compressed to accumulate elastic potential energy.

[0183] like Fig.34As shown, the force-applying member 72 is movably arranged at the second end 12 of the box body 10, specifically, the force-applying member 72 can move along the left-right direction, and the force-applying member 72 is located in front of the force-receiving member 71 in the front-back direction. The force-applying member 72 is provided with a second magnetic member 721, a second sliding portion 722 and a force-applying protrusion 723. The second magnetic member 721 is exposed to the right side of the force-applying member 72, and is arranged opposite to the first magnetic member 712. The second sliding portion 722 protrudes from the right side of the force-applying member 72. A second guide rail is provided at the second end 12 of the box body 10 72a, the second guide rail 72a adopts an inner groove structure, which is recessed to the right along the left and right direction of the box body 10, the second sliding part 722 is movably arranged in the second guide rail 72a to drive the force-applying member 72 to move, the first elastic member 73 is arranged in the second guide rail 72a, one end of the first elastic member 73 is connected to the second sliding part 722, and the other end is connected to the inner wall of the second guide rail 72a, and the first elastic member 73 is preferably a tension spring, which is used to generate elastic potential energy for the force-applying member 72 to move and reset after the force-applying member 72 is forced to move. The force-applying protrusion 723 adopts an inclined convex structure, and the structure of the force-applying protrusion 723 extends to the left and backward, so that the force-applying protrusion 723 has a gradually increasing size difference from the left side to the right side, and the force-applying protrusion 723 can abut against the support groove 66 of the drum assembly 6. In this embodiment, the force-applying part is the force-applying protrusion 723.

[0184] Working principle: Fig.35 , Fig.36 As shown, when the force-bearing protrusion 711 receives the separation force of the image forming device, the first sliding portion 713 and the first magnetic member 712 overcome the elastic force of the second elastic member 74 and move forward along the first guide rail 71a, the second elastic member 74 is compressed, and the first magnetic member 712 moves to a position opposite to the second magnetic member 721. At this time, the first magnetic member 712 and the second magnetic member 721 have the same magnetic pole relative to each other and produce repulsion, so that the second magnetic member 721 drives the force-applying member 72 to move left along the second guide rail 72a, so that the force-applying protrusion 723 slides left, and the first elastic member 73 accumulates elastic potential energy, thereby causing the supporting surface of the force-applying protrusion 723 to abut against the drum assembly 6, so that the drum assembly 6 applies a reaction force to the supporting surface, so that the force-applying protrusion 723 drives the second end 12 of the box body 10 to move backward under the action of the reaction force, thereby realizing the same drum-roller separation function as in Example 5, and the rest of the parts are the same as in Example 5 and are not repeated here. When the image forming device no longer applies a separation force to the force-bearing protrusion 711, the elastic force of the second elastic member 74 causes the first sliding portion 713 to drive the force-bearing member 71 to return to its original position, and the second sliding portion 722 moves to the right and returns to its original position under the elastic force of the first elastic member 73. At the same time, the box body 10 falls back to a position where the developing roller 131 is in close contact with the photosensitive drum 65 under the action of its own gravity.

[0185] In this embodiment, the first elastic member 73 and the second elastic member 74 may not be provided, and the developing box 1 can make the drum roller contact only by the action of its own gravity or the action of the thrust.

[0186] In some embodiments, Fig.37 , Fig.38 As shown, the first guide rail 71a and the first sliding portion 713 may not be provided, but the force-bearing member 71 may be rotatably installed on the second end 12 of the box body 10, and the first magnetic member 712 is fixedly connected to the force-bearing member 71, that is, the first magnetic member 712 can rotate relative to the box body 10 together with the force-bearing member 71. When the force-bearing member 71 receives the separation force, it drives the first magnetic member 712 to rotate clockwise from the first position to the second position relative to the second magnetic member 721, and the second magnetic member 721 can also make the force-applying member 72 move leftward along the second guide rail 72a under the action of the repulsive force. A reset elastic member 75 may also be provided on the force-bearing member 71. In this embodiment, the reset elastic member 75 is a tension spring, one end of which is fixedly connected to the second end 12 of the box body 10 and the other end is fixedly connected to the force-applying member 72. When the separation force is withdrawn, the elastic force of the tension spring can pull the force-applying member 72 back and reset it.

[0187] Embodiment 8

[0188] like Figure 39-Figure 41 As shown, the developing box 1 of this embodiment has most of the same structures as those of the first embodiment, except that the structure of the separation component of this embodiment is different. The separation component of this embodiment is arranged at the second end 12 of the box body 10, the force-bearing part can move on the box body 10, and the force-applying part acts on the box body 10 after the separation force transmitted by the force-bearing part, thereby driving the box body 10 to move.

[0189] like Fig.39 , Fig.40As shown, the separation assembly of this embodiment is arranged at the second end 12, and the separation assembly includes a force-bearing member 77 and an abutting member 78. The force-bearing member 77 adopts a slider structure, which is movably arranged at the second end 12 of the box body 10. The force-bearing member 77 has a force-bearing protrusion 771 and an insertion portion 772 that are relatively arranged in the front-to-back direction. The force-bearing protrusion 771 is used to receive the separation force of the image forming device. In the front-to-back direction, the force-bearing protrusion 771 is farther away from the developing roller 131 than the insertion portion 772. In this embodiment, the force-bearing protrusion 771 is the force-bearing portion. The insertion portion 772 is the end structure of the force-bearing member 77. The insertion portion 772 has a first separation inclined surface 7721 and a second separation inclined surface 7722. The first separation inclined surface 7721 and the second separation inclined surface 7722 make the insertion portion 772 form a "V" tip structure. After receiving the separation, the force-bearing protrusion 771 can drive the first separation inclined surface 7721 and the second separation inclined surface 7722 to move. The second end 12 of the box body 10 is provided with a guide rail 77a, which can be integrally arranged on the bearing 121 or assembled on the box body 10. The guide rail 77a extends approximately along the front-to-back direction, and the force-bearing member 77 is movably arranged in the guide rail 77a, and the insertion portion 772 and the force-bearing protrusion 771 can be exposed at the front and rear sides of the guide rail 77a, respectively. The second end 12 of the box body 10 is provided with a force-applying protrusion 106, which is convexly formed toward the left along the left-right direction, and can be integrally formed with the box body 10. The force-applying protrusion 106 is arranged adjacent to the second forced pushing member 122, and the first separation inclined surface 7721 can abut against the force-applying protrusion 106. In this embodiment, the force-applying protrusion 106 is a force-applying portion.

[0190] A reset protrusion 773 is also provided at the right end of the force-bearing member 77, and the reset protrusion 773 protrudes to the right. A supporting surface is provided in the guide rail 77a, and a reset elastic member 774 is installed between the supporting surface and the reset protrusion 773. The reset elastic member 774 can be compressed in the front-to-back direction and is used for moving and resetting the force-bearing member 77.

[0191] like Fig.40 , Fig.41As shown, the abutment member 78 is movably arranged at the second end 12 of the box body 10, and the abutment member 78 is specifically arranged on the bearing 121. The abutment member 78 can be moved roughly in the up-down direction. The abutment member 78 has a first abutment end 781, a second abutment end 782 and a waist-shaped hole 783. The first abutment end 781 and the second abutment end 782 are relatively arranged at the two ends of the abutment member 78 in the up-down direction, and both adopt a circular arc end surface structure. In the up-down direction, the first abutment end 781 is farther away from the photosensitive drum 65 than the second abutment end 782. The first abutment end 781 can abut against the second separation inclined surface 7722, and the second abutment end 782 can abut against the support groove 66 of the drum assembly 6. The waist-shaped hole 783 adopts a through-hole structure, which is arranged between the first abutment end 781 and the second abutment end 782. The end of the developing roller 131 supported on its left side is the developing end 131a, and the developing end 131a can be inserted into the waist-shaped hole 783. A retainer 105 is also fixedly arranged on the second end 12 of the box body 10. The retainer 105 is inserted into the waist-shaped hole 783 and a buckle structure is arranged at the left end of the retainer 105. The buckle structure is used to abut against the left end of the abutment 78 to prevent the abutment 78 from detaching from the box body 10 to the left. Since the retainer 105 and the developing end 131a are both inserted into the waist-shaped hole 783, the sliding range of the abutment 78 is limited by the end of the developing roller 131 and the retainer 105. In this embodiment, the waist-shaped hole 783 is a limiting hole. The retainer 105 is located between the developing end 131a and the force-applying protrusion 106 in the up and down direction.

[0192] In this embodiment, when the developing cartridge 1 is mounted on the drum assembly 6 , the abutting member 78 is located in the supporting groove 66 and the supporting grooves 66 abut against each other, so that the developing cartridge 1 is positioned by the drum assembly 6 .

[0193] Working principle: The force-bearing member 77 receives the separation force provided by the image forming device and moves downward from the non-working position to the working position. In the working position, the insertion portion 772 is inserted between the force-applying protrusion 106 and the first abutting end 781 of the abutting member 78, and the reset elastic member 774 is compressed. As the insertion portion 772 is inserted between the force-applying protrusion 106 and the first abutting end 781, the insertion size of the insertion portion 772 in the up-down direction gradually increases, and because the second abutting end 782 of the abutting member 78 abuts against the support groove 66 on the drum assembly 6, when the insertion portion 772 is inserted between the abutting member 78 and the force-applying protrusion 106, the force applied to the abutting member 78 cannot cause the abutting member 78 to move upward relative to the drum assembly 6. Thereby, the force applied by the insertion portion 772 to the force-applying protrusion 106 causes the force-applying protrusion 106 to drive the box body 10 to overcome the pushing force of the second pushing member 122 and move downward relative to the drum assembly 6, so that the developing roller 131 moves relative to the drum assembly 6 together with the box body 10, and the developing roller 131 is disengaged from the abutment with the photosensitive drum 65.

[0194] When the image forming device stops applying the separation force to the force-bearing member 77, the elastic force of the reset elastic member 774 causes the force-bearing member 77 to move backward and leave between the force-applying protrusion 106 and the abutment member 78, so that the force-applying protrusion 106 drives the box body 10 to move upward under the action of the forced thrust, so that the developing roller 131 moves upward together with the box body 10 to a position in contact with the photosensitive drum 65 and enters a state of close abutment.

[0195] Embodiment 9

[0196] like Figure 42-Figure 44 As shown, the developing box 1 of this embodiment has most of the same structures as those of the eighth embodiment, except that the structure of the separation component of this embodiment is different. The separation component of this embodiment is arranged at the second end 12 of the box body 10, and adopts a connecting rod rotation structure. The force-bearing part can move on the box body 10, and the force-applying part acts on the box body 10 after the separation force transmitted by the force-bearing part, thereby driving the box body 10 to move.

[0197] like Fig.42 As shown, the separation component of this embodiment is arranged at the second end 12 of the box body 10, and the separation component includes a force-bearing member 81, a first rod 82 and a second rod 83. The force-bearing member 81 adopts a slider structure, which is movably arranged at the second end 12 of the box body 10. The moving direction of the force-bearing member 81 intersects with the up-down direction and the front-back direction. The second end 12 of the box body 10 is provided with a first guide rail 81a, and the first guide rail 81a can be integrally arranged on the box body 10, or can be installed to the box body 10 in an assembled manner. The force-bearing member 81 is movably arranged on the first guide rail 81a, and the end of the force-bearing member 81 exposed on the first guide rail 81a is provided with a force-bearing surface 811, which adopts an inclined surface shape inclined relative to the third direction, or can also adopt a curved surface shape. The force-bearing surface 811 extends forward and upward to receive the separation force of the image forming device. In this embodiment, the force-bearing surface 811 is a force-bearing portion.

[0198] like Fig.43 As shown, the first rod 82 and the second rod 83 are rotatably connected to the force-bearing member 81, and the first rod 82 and the second rod 83 are arranged at the end opposite to the force-bearing surface 811, and the first rod 82 and the second rod 83 can rotate relative to each other, wherein a positioning column 107 is fixedly provided at the second end 12 of the box body 10, and the positioning column 107 protrudes to the left from the box body 10, and the second end of the first rod 82 is connected to the positioning column 107, and the first end of the first rod 82 is rotatably connected to the first end of the second rod 83, and the second end of the second rod 83 is an abutting rod end 831, which adopts an arc end face shape, and the abutting rod end 831 can abut

[0199] On the support groove 66 of the drum assembly 6. It can be understood that when the developing roller 131 is in contact with the photosensitive drum 65, there is a first angle between the first rod 82 and the second rod 83, and when the developing roller 131 is in a separated state from the photosensitive drum 65, there is a second angle between the first rod 82 and the second rod 83, and the first angle is smaller than the second angle, that is, the angle between the first rod 82 and the second rod 83 gradually increases during the separation process of the developing roller 131 and the photosensitive drum 65.

[0200] Working principle: Fig.43 , Fig.44 As shown, the force-bearing surface 811 is provided with a separation force by the image forming device, so that the force-bearing member 81 slides along the first guide rail 81a, thereby pushing the first rod 82 and the second rod 83 to move, so that the first rod 82 and the second rod 83 rotate relative to the end of the force-bearing member 81. Since the second rod 83 is abutted on the drum assembly 6 and cannot move, the angle between the first rod 82 and the second rod 83 gradually increases from the first angle to the second angle, and then the first rod 82 rotates and supports the movement of the box body 10 through the positioning column 107, and supports the second end 12 of the box body 10 backward, so that the second end 12 of the box body 10 moves relative to the drum assembly 6, so as to drive the developing roller 131 to disengage from the abutment with the photosensitive drum 65. That is, in this embodiment, the first rod 82 and the second rod 83 act together to form a force-applying portion. When the image forming device cancels the separation force, the developing box 1 rotates the first rod 82 under the action of its own weight, so that the force-bearing member 81 moves and resets.

[0201] Embodiment 10

[0202] like Figure 45-Figure 48 As shown, the developing box 1 of this embodiment has most of the same structures as those of the eighth embodiment, except that the structure of the separation component of this embodiment is different. The separation component of this embodiment is arranged at the second end 12 of the box body 10, and adopts a rocker rod rotating structure. The force-bearing part can move on the box body 10, and the separation component can abut against the drum assembly 6. The force-applying part transmits the separation force through the force-bearing part and then acts on the drum assembly 6 to generate a return force to drive the box body 10 to move.

[0203] like Fig.45As shown, the separation component of the present embodiment is arranged at the second end 12 of the box body 10, and the separation component includes a swing rod 85. The swing rod 85 is swingably arranged at the second end 12 of the box body 10, and its swing axis is parallel to the left and right direction. The swing rod 85 has a fixed end and a free end that are relatively arranged. The fixed end of the swing rod 85 is rotatably connected to the box body 10, and the fixed end of the swing rod 85 is closer to the rear side of the box body 10. The free end of the swing rod 85 is provided with a force-applying protrusion 851, and the force-applying protrusion 851 adopts an arc end face shape, so that the contact is smoother. The force-applying protrusion 851 can abut against the supporting groove 66 of the drum assembly 6. In the present embodiment, the force-applying protrusion 851 is a force-applying part, and the force-bearing part is arranged on the swing rod 85. The force-bearing part can be the body of the swing rod 85, which is used to receive the separation force of the image forming device. The separation force of the image forming device can be applied between the fixed end and the free end of the swing rod 85.

[0204] like Fig.46 As shown, the drum assembly 6 is provided with an abutting protrusion 6a, which is arranged adjacent to the support groove 66. In the front-to-back direction, the abutting protrusion 6a and the support groove 66 have a height difference, and the abutting protrusion 6a is farther away from the developing roller 131 than the support groove 66. The force-applying protrusion 851 of the swing lever 85 can abut against the abutting protrusion 6a by swinging. A reset elastic member 86 is also fixedly provided at the second end 12 of the box body 10. The reset elastic member 86 is preferably a tension spring. One end of the reset elastic member 86 is connected to the box body 10, and the other end thereof is connected to the swing lever 85. The reset elastic member 86 is used to provide elastic potential energy for resetting the swing lever 85.

[0205] Working principle: Fig.46 , Fig.47As shown, when the separator 101 in the image forming device is in operation, the separator 101 contacts the main part (the part between the fixed end and the free end) of the swing rod 85, thereby applying a separation force to the swing rod 85, so that the swing rod 85 rotates counterclockwise from the non-working position to the working position by a certain angle. When the swing rod 85 is in the non-working position, the force-applying protrusion 851 of the swing rod 85 is in the support groove 66. When the swing rod 85 is in the working position, the force-applying protrusion 851 of the swing rod 85 abuts against the abutting protrusion 6a on the drum assembly 6, and the reset elastic member 86 accumulates elastic potential energy. That is, in the process of the swing rod 85 swinging from the non-working position to the working position, the swing rod 85 comes into contact with the abutting protrusion 6a on the drum assembly 6 and receives the reaction force applied by the abutting protrusion 6a, so that the swing rod 85 drives the developing box 1 to move backward, and then the second end 12 of the box body 10 receives the backward force and moves, so that the developing roller 131 is separated from the abutment with the photosensitive drum 65. When the image forming device cancels the separation force on the rocker arm 85, the developing box 1 drives the rocker arm 85 to reset and swing under the action of its own weight and the elastic force of the reset elastic member 86, and the force-applying protrusion 851 abuts against the supporting groove 66 again, and the developing roller 131 and the photosensitive drum 65 are in a close contact position.

[0206] In addition, a stop block 108 and an elastic member for abutting against the rear wall or top cover of the image forming device can be provided on the fourth end 14 of the box body 10. The elastic member is preferably a spring. The elastic member is installed between the stop block 108 and the fourth end 14 of the box body 10, so that when the developing box 1 moves backward, the elastic member is compressed. When the separation member 101 of the image forming device stops applying the separation force, the elastic force of the elastic member causes the developing box 1 to move forward and move from the drum-roller separation state to the contact state.

[0207] In other embodiments, Fig.48 As shown, in order to enable the developing box 1 to adapt to the separating member 101 (such as a separating cam) in different image forming devices, the portion between the fixed end and the free end of the rocker arm 85 can be provided with an arc portion 852 to prevent the separating member 101 from having an excessive stroke, causing the free end of the rocker arm 85 to be unable to stay in a position in contact with the abutting protrusion 6a on the drum assembly 6.

[0208] Embodiment 11

[0209] like Figure 49-Figure 52 As shown, the developer box 1 of this embodiment has most of the same structures as those of the tenth embodiment, except that the partial structures and swinging modes of the separation components of this embodiment are different.

[0210] like Fig.49 and Fig.50As shown, the separation assembly of this embodiment includes a swing rod 87, which is swingably disposed at the second end 12 of the box body 10, and the swing axis of the swing rod 87 is parallel to the up and down direction. The swing rod 87 has a fixed end and a free end that are relatively disposed, and the fixed end of the swing rod 87 is rotatably disposed on the box body 10, as shown in FIG. Fig.50 As shown, the free end of the swing lever 87 is provided with a force-applying abutment portion 871, which is an inclined structure protruding to the right, and there is a height difference between the left and right sides of the force-applying abutment portion 871. The right side of the force-applying abutment portion 871 is closer to the fixed end of the swing lever 87 than the left side, so as to form a shape similar to a truncated cone. When the developing roller 131 and the photosensitive drum 65 are in abutment and in the developing operation, the right side of the force-applying abutment portion 871 can abut against the support groove 66 of the drum assembly 6. In this embodiment, the force-applying abutment portion 871 is a force-applying portion, and the force-receiving portion is arranged on the body of the swing lever 87, located between the fixed end and the free end of the swing lever 87, and is used to receive the separation force of the image forming device. Furthermore, the second end 12 of the box body 10 is provided with a resetting elastic member 88, and the resetting elastic member 88 abuts between the side wall of the bearing 121 and the force-applying abutting portion 871, wherein the bearing 121 is also provided with a protruding structure adapted to the resetting elastic member 88, and the resetting elastic member 88 can be sleeved on the protruding structure to prevent the resetting elastic member 88 from being separated. When the force-applying abutting portion 871 approaches the second end 12 (bearing 121) of the box body 10, the resetting elastic member 88 is compressed to accumulate elastic potential energy.

[0211] Working principle: Fig.51 , Fig.52 As shown, when the separation force of the image forming device is output to the swing rod 87, the swing rod 87 has a tendency to swing around its fixed end, the outer peripheral surface of the force-applying contact portion 871 slides on the support groove 66, and the force-applying contact portion 871 gradually approaches the second end 12 of the box body 10, and the reset elastic member 88 is compressed, so that the force-applying contact portion 871 receives the reaction force provided by the drum assembly 6, that is, the force-applying contact portion 871 performs a circular motion during this process, so the force-applying contact portion 871 applies a forward force to the drum assembly 6, and the force-applying contact portion 871 is supported by the drum assembly 6 and is limited and cannot move forward relative to the drum assembly 6, so that the swing rod 87 props up the second end 12 of the box body 10 backward, and the reset elastic member 88 is compressed. The box body 10 drives the developing roller 131 to move and disengage from the abutment with the photosensitive drum 65.

[0212] When the image forming device cancels the separation force output to the rocker arm 87, the rocker arm 87 is forced to slide in the direction away from the second end 12 of the box body 10 (to the left) under the action of the deadweight of the developing box 1 and the elastic potential energy of the reset elastic member 88, so that the rocker arm 87 is reset and swung, and the box body 10 drives the developing roller 131 to move and tightly abut against the photosensitive drum 65.

[0213] Embodiment 12

[0214] like Fig.53 , Fig.54 As shown, the structure of the developing box 1 of this embodiment is mostly the same as that of the embodiment 1, except that the transmission assembly of this embodiment is arranged in a different structure, and the first idler wheel 43 is omitted, and power is transmitted by belt drive.

[0215] The transmission assembly includes a driving unit, a second idler, a stirring gear 45, a transmission member, a first rotating member 48, and a second rotating member 49. The driving unit includes a power receiving unit 40 and a driving gear 44. The power receiving unit 40, the driving gear 44, the second idler, and the stirring gear 45 are the same as those in the first embodiment, and are not described in detail here. The first rotating member 48 is fixedly mounted on the right side end of the developing roller 131, and the second rotating member 49 is fixedly mounted on the right side end of the powder feeding roller. The first rotating member 48 and the second rotating member drive the developing roller 131 and the powder feeding roller to rotate respectively by receiving the power transmitted by the driving unit. The first rotating member 48 and the second rotating member transmit power to the driving unit in a non-gear manner. In this embodiment, a transmission belt 47 is specifically used for transmission, that is, the transmission member in this embodiment is specifically a transmission belt 47.

[0216] The first rotating member 48 is provided with a first transmission groove 481, which is arranged around the first rotating member 48 along the rotation direction of the first rotating member 48 and is recessed in the radial direction. The second rotating member 49 is provided with a second transmission groove 491, which is arranged around the second rotating member 49 along the rotation direction of the second rotating member 49 and is recessed in the radial direction. The driving part is provided with a third transmission groove 401, which is arranged around the driving part around the rotation direction of the driving part and is recessed in the radial direction, and the third transmission groove 401 is closer to the first end 11 than the power receiving part 40 in the left-right direction.

[0217] like Fig.54As shown, the transmission belt 47 is installed on the first rotating member 48, the second rotating member 49 and the driving part at the same time, so that the first rotating member 48 and the second rotating member 49 are connected to the driving part. The transmission belt 47 is an "8"-shaped drive, which includes a first wrapping portion 471 and a second wrapping portion 472. In the second direction, the second wrapping portion 472 is closer to the stirring gear 45 than the first wrapping portion 471. The first wrapping portion 471 is sleeved on the third transmission groove 401, and the second wrapping portion 472 is sleeved on the first transmission groove 481 and the second transmission groove 491 at the same time. When the power receiving part 40 receives the power output by the image forming device so that the driving part starts to rotate, the first looping part 471 of the transmission belt 47 follows the driving part to rotate in the first rotation direction, the first looping part 471 of the transmission belt 47 drives the second looping part 472 to rotate, and the second looping part 472 drives the first rotating member 48 and the second rotating member 49 to start rotating. Since the transmission belt 47 is in the shape of "8", the rotation direction of the first rotating member 48 and the second rotating member 49 is the second rotation direction opposite to the first rotation direction, and the developing roller 131 and the powder feeding roller respectively follow the first rotating member 48 and the second rotating member 49 to rotate along the second rotation direction, that is, if the first rotation direction of the driving part is clockwise, the second rotation direction of the first rotating member 48 and the second rotating member 49 is counterclockwise.

[0218] The above description is only a preferred embodiment of the present invention. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments are described. This does not limit the present invention in any form. Therefore, any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A developing cartridge, detachably mounted on an image forming device having a drum assembly, wherein the drum assembly comprises a photosensitive drum, characterized in that: include: A box body, used for storing developer, the box body having a first end and a second end arranged opposite to each other in a first direction; a developing roller rotatably disposed on the box body and capable of abutting against the photosensitive drum, wherein a rotation axis of the developing roller extends in the first direction; a driving unit, receiving power from the image forming device to rotate, and located at the first end; A separation component, comprising a force receiving portion and a force applying portion, wherein the force receiving portion is used to receive the separation force of the image forming device, the force receiving portion is arranged at the first end and / or the second end of the box body, and the force applying portion is arranged at the second end of the box body; The force-applying portion receives the separation force transmitted by the force-receiving portion and moves, and drives the box body to move, so that the box body drives the developing roller to separate from the abutment with the photosensitive drum.

2. The developing cartridge according to claim 1, characterized in that: The separation assembly also includes a transmission rod, which is movable relative to the box body, and extends in the first direction. The force-bearing portion is located at the first end, and the force-applying portion is located at the second end. The transmission rod transfers the separation force from the force-bearing portion to the force-applying portion, and the directions of the separation forces received by the force-bearing portion and the force-applying portion intersect with the first direction.

3. The developing cartridge according to claim 2, characterized in that: The separation component comprises: A force-bearing member, movably disposed at the first end, and the force-bearing portion is disposed at the force-bearing member; A force applying member, movably disposed at the second end, the force applying portion being disposed at the force applying member; The force receiving member and the force applying member are in contact with two ends of the transmission rod in the first direction respectively; The force-bearing member receives the separation force and drives the transmission rod and the force-applying member to move. The force-applying member moves and abuts against the drum assembly to generate a reaction force, so that the force-applying member drives the box body to move.

4. The developing cartridge according to claim 3, characterized in that: The movement directions of the force receiving member and the force applying member intersect with the first direction, and the transmission rod moves in the first direction.

5. The developing cartridge according to claim 4, characterized in that: The first end and the second end are respectively provided with a first guide rail and a second guide rail, the extension direction of the first guide rail and the second guide rail intersects with the first direction, and the force receiving member and the force applying member move along the first guide rail and the second guide rail respectively. A mounting groove is provided between the first end and the second end of the box body, and the transmission rod is movably located in the mounting groove.

6. The developing cartridge according to claim 2, characterized in that: The force-bearing portion and the force-applying portion are respectively located at two ends of the transmission rod in the first direction. The force-bearing portion rotates relative to the box body after receiving the separation force of the image forming device. The transmission rod rotates with the force-bearing portion and drives the force-applying portion to rotate. The force-applying portion rotates and abuts against the drum assembly.

7. The developing cartridge according to claim 6, wherein: The developing roller has a hollow portion extending along the first direction. The transmission rod is located in the hollow portion. The transmission rod rotates relative to the developing roller.

8. The developing cartridge according to claim 1, wherein: The separation force includes a first separation force and a second separation force, and the force-bearing portion includes a first force-bearing portion that receives the first separation force and a second force-bearing portion that receives the second separation force. The first force-bearing portion is located at the second end, and the second force-bearing portion is located at the first end. The first force-bearing portion moves at the second end of the box body to drive the box body to move. When observed from the first direction, the first force-bearing portion and the second force-bearing portion at least partially do not overlap.

9. The developing cartridge according to claim 8, characterized in that: It also includes a force-applying member and a force-bearing member, the force-applying part is arranged on the force-applying member, and the force-bearing member includes a first force-bearing member and a second force-bearing member, the first force-bearing member is movably arranged at the second end, the first force-bearing part is arranged on the first force-bearing member, the second force-bearing member is fixedly arranged at the first end, the second force-bearing part is arranged on the second force-bearing member, the first force-bearing member is in contact with the force-applying member, and the force-applying member receives the first separation force transmitted by the first force-bearing member and moves.

10. The developing cartridge according to claim 9, characterized in that: The second end is provided with a first guide rail and a second guide rail, the extension directions of the first guide rail and the second guide rail intersect, the first force receiving member is movably arranged on the first guide rail, and the force applying member is movably arranged on the second guide rail.

11. The developing cartridge according to claim 1, characterized in that: The separation assembly further comprises a flexible member and a force-bearing member, the force-bearing portion is arranged on the force-bearing member, the flexible member receives the separation force transmitted by the force-bearing portion and moves relative to the box body, and the force-applying portion is arranged on the flexible member.

12. The developing cartridge according to claim 11, characterized in that: A first guide rail and a second guide rail are provided at the second end, the force-bearing member is movably provided on the first guide rail, the flexible member is movably provided on the second guide rail, and the second guide rail is in a curved shape.

13. The developing cartridge according to claim 11, characterized in that: After being driven by the force-bearing member, the flexible member moves in a curve relative to the box body and maintains its own shape.

14. The developing cartridge according to claim 11, characterized in that: The box body is provided with a force-applied portion, one end of the flexible member is connected to the force-bearing member, and the other end of the flexible member is connected to the force-applied portion.

15. The developing cartridge according to claim 14, characterized in that: The separation assembly further comprises a support member, which is movably arranged at the second end and in contact with the drum assembly. The force-bearing portion receives the separation force to move the box body, and the support member moves relative to the box body.

16. The developing cartridge according to claim 15, characterized in that: When the flexible member receives the separation force and moves, the flexible member abuts against the support member.

17. The developing cartridge according to claim 1, characterized in that: The separation component comprises: A force-bearing member, which is movably arranged at the second end, and the force-bearing part is arranged on the force-bearing member; A force applying member, which is constructed as a transmission wheel and is rotatably arranged at the second end of the box body, and the force applying part is arranged on the transmission wheel; The transmission wheel is in transmission connection with the force bearing member, and the box body further comprises a coupling member, which is in transmission connection with the transmission wheel.

18. The developing cartridge according to claim 17, characterized in that: The force-bearing member includes a rack structure, the transmission wheel includes a gear structure, the engaging member includes a rack structure, and the transmission wheel is meshed with the force-bearing member and the force-applying member for transmission.

19. The developing cartridge according to claim 1, characterized in that: The separation component comprises: A force-bearing member, movably disposed at the second end, wherein the force-bearing portion is disposed on the force-bearing member; A force-applying member is movably arranged at the second end, and the force-applying portion is arranged on the force-applying member; the moving direction of the force-applying member intersects with the moving direction of the force-receiving member; The separation force is received by the force-bearing part, so that the force-bearing member moves and the projection of the force-applying member coincides with the projection of the force-applying member. The force-bearing member and the force-applying member generate a reaction force to cause the force-applying member to move. The force-applying part abuts against the drum assembly and generates a reaction force with the drum assembly to drive the box body to move.

20. The developing cartridge according to claim 19, characterized in that: The second end is provided with a first guide rail and a second guide rail, the first guide rail has a first elastic member inside, the first elastic member abuts against the force-bearing member, the second elastic member is installed in the second guide rail, the force-bearing member and the force-applying member are movably arranged on the first guide rail and the second guide rail respectively, and are moved and reset by the first elastic member and the second elastic member.

21. The developing cartridge according to claim 20, characterized in that: The force-receiving member has a first magnetic member, and the force-applying member has a second magnetic member. When the force-receiving member moves and drives the first magnetic member and the second magnetic member to approach each other relatively, a repulsive reaction force is generated, so that the force-applying member moves.

22. The developing cartridge according to claim 21, characterized in that: The force-bearing member is rotatably arranged at the second end of the box body, and the first magnetic member is arranged on the force-bearing portion and swings simultaneously with the force-bearing portion, so that a repulsive reaction force is generated when the first magnetic member and the second magnetic member are relatively close to each other.

23. The developing cartridge according to claim 1, characterized in that: The separation component comprises: A force-bearing member, which is movably arranged at the second end, and the force-bearing part is arranged on the force-bearing member; The force applying portion is fixedly arranged at the second end of the box body; an abutment member slidably disposed at the second end of the box body; The separation force is received by the force-bearing part, so that the force-bearing member moves and is inserted between the force-applying part and the abutting member, and the abutting member abuts against the drum assembly, forcing the force-applying part to move and drive the box body to move.

24. The developing cartridge according to claim 23, characterized in that: The second end is provided with a guide rail, the force-bearing member is movably arranged in the guide rail, and a reset elastic member is provided in the guide rail, the reset elastic member abuts against the force-bearing member, and is used for the force-bearing member to move and reset.

25. The developing cartridge according to claim 23, characterized in that: The abutment member is provided with a limiting hole, and the second end of the box body is provided with a retaining member, the retaining member is inserted into the limiting hole and abuts against the abutment member, so that the abutment member slides along the limiting hole.

26. The developing cartridge according to claim 1, characterized in that: The separation component comprises: A force-bearing member, movably disposed at the second end of the box body, and the force-bearing portion is disposed on the force-bearing member; The first rod and the second rod are rotatably connected and rotate relative to the box body under the action of the separation force transmitted by the force-bearing member. The second end of the first rod is connected to the box body, the second end of the second rod is in contact with the drum assembly, and the force applying part is arranged on the first rod and the second rod. The force receiving portion receives the separation force so that the force receiving member moves and drives the first rod and the second rod to rotate relative to each other.

27. The developing cartridge according to claim 26, characterized in that: When the first rod and the second rod are not subjected to the separation force, there is a first angle between the two rods. After the first rod and the second rod are subjected to the separation force and rotate, there is a second angle between the two rods, and the second angle is greater than the first angle.

28. The developing cartridge according to claim 1, characterized in that: The separation assembly comprises a swing rod, the swing rod is swingably arranged at the second end, the swing axis of the swing rod extends in the first direction, the force applying part is arranged at the free end of the swing rod; the first end is provided with a force receiving member that receives the separation force simultaneously with the swing rod; The separation force is received by the force-bearing portion, so that the swing rod drives the force-applying portion to swing until the force-applying portion abuts against the drum assembly, and the swing rod and the drum assembly generate a reaction force to drive the box body to move.

29. The developing cartridge according to claim 1, characterized in that: The separation assembly comprises a swing rod, a force applying member and a force receiving member, wherein the swing rod is swingably arranged at the second end of the box body, the swing axis of the swing rod intersects with the first direction, and the force applying member is arranged at the free end of the swing rod; The separation force is received by the force-bearing member, so that the swing rod drives the force-applying member to swing in a direction close to the box body, and the force-applying member abuts against the drum assembly and generates a reaction force with the drum assembly, so that the swing rod drives the box body to move.

30. The developing cartridge according to claim 1, characterized in that: It also includes a reset elastic member for driving the separation assembly to reset.

31. The developing cartridge according to claim 1, characterized in that: It also includes an identification component, which includes a storage medium and an electrical contact surface, the electrical contact surface is electrically connected to the storage medium, the electrical contact surface is located at the first end of the box body, and the storage medium is used to store information about the developing box.

Images