Developing box

Abstract

The utility model discloses a developing box which comprises a box body, a developing roller; the first moving part is arranged at the first side end and is provided with a first abutting part and a first transmission part, the first abutting part is used for receiving separation acting force provided by the separation force output part moving in the first direction so as to drive the first moving part to move along a first preset path, and a third abutting part is arranged on the box body or the drum frame and is used for receiving separation acting force provided by the separation force output part moving in the first direction; the first transmission part is used for abutting against the third abutting part to drive the box body to move, so that the developing roller is separated from the photosensitive drum. Compared with the prior art, the developing box can move relative to the photosensitive drum and the developing roller is changed into a state of being separated from the photosensitive drum only by arranging a corresponding structure on one side of the developing box to apply force to the developing box, so that the structure of the developing box can be simplified, and meanwhile, the developing box can be miniaturized.

Description

Technical Field

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

[0002] An electrophotographic image forming apparatus includes a detachable developing cartridge mounted on a drum frame of the image forming apparatus. A developing roller on the developing cartridge supplies developer to a photosensitive drum on the drum frame, so that an electrostatic latent image is formed on the photosensitive drum.

[0003] The developing box is installed on the drum frame, and the developing box is placed in the installation cavity of the drum frame. The developing roller of the developing box contacts the photosensitive drum in the drum frame. However, during the working process of the developing box, the developing roller and the photosensitive drum need to be switched from the contact state to the separation state. In order to realize the above switching process, the structure of the existing developing box is complicated. Utility Model Content

[0004] The purpose of the utility model is to provide a developing box with a simple structure and stable operation to solve the technical problems in the prior art. It only needs to set a corresponding structure on one side of the developing box to apply force to the developing box, so that the developing box can be moved relative to the photosensitive drum, and the developing roller can be transformed into a state of being separated from the photosensitive drum.

[0005] The utility model provides a developing box, which can be detachably mounted on a drum frame in an image forming device, wherein a mounting cavity is provided on the drum frame, and a photosensitive drum is provided in the mounting cavity. The image forming device comprises a separation force output member, and the developing box comprises:

[0006] The box body has a first side end and a second side end arranged opposite to each other along a first direction, a third side end and a fourth side end arranged opposite to each other along the second direction, and a fifth side end and a sixth side end arranged opposite to each other along a third direction. The box body is installed in the installation cavity along the second direction, and the first direction, the second direction and the third direction intersect each other.

[0007] A developing roller is rotatably disposed at a third side end of the box body, and the developing roller extends along a first direction;

[0008] The first movable member is arranged at the first side end and has a first abutment portion and a first transmission portion. The first abutment portion is used to receive the separation force provided by the separation force output member moving along the first direction to drive the first movable member to move along the first preset path. The box body or the drum frame is provided with a third abutment portion. The first transmission portion is used to abut with the third abutment portion to drive the box body to move so that the developing roller is separated from the photosensitive drum.

[0009] A developing box as above, wherein, preferably, the developing box also includes a second movable member, the second movable member is arranged at the first side end, the second movable member is located within the first preset path range, the second movable member has a second abutting portion and a second transmission portion, the second abutting portion is used to abut with the first transmission portion so that the second movable member moves along the second preset path, and the second transmission portion is used to abut with the third abutting portion to drive the box body to move so that the developing roller is separated from the photosensitive drum.

[0010] A developing box as above, wherein preferably, the first preset path is a linear moving path of the first moving member moving along the third direction;

[0011] The second preset path is a linear movement path of the second moving member moving along the second direction, or the second preset path is a rotational movement path of the second moving member with the first preset axis as the center line, and the first preset axis extends along the first direction.

[0012] A developing cartridge as above, wherein preferably, when the second preset path is a linear moving path of the second moving member moving along the second direction, the first abutting portion and the first transmitting portion are sequentially distributed along the third direction, the first abutting portion includes a first guiding inclined surface, and the starting end of the first guiding inclined surface is farther away from the second side end and closer to the sixth side end than the terminal end;

[0013] The second abutting portion and the second transfer portion are distributed sequentially along the second direction, and the second abutting portion or the first transfer portion includes a second guide slope. When the second abutting portion includes the second guide slope, the starting end of the second guide slope is farther away from the third side end and closer to the fifth side end than the end. When the first transfer portion includes the second guide slope, the starting end of the second guide slope is closer to the third side end and farther away from the fifth side end than the end.

[0014] A developing box as above, wherein, preferably, when the second preset path is a rotational movement path of the second movable member with the first preset axis as the center line, the first abutment portion and the first transmission portion are distributed sequentially along the third direction, the first abutment portion includes a third guide slope, the starting end of the third guide slope is farther away from the second side end and closer to the sixth side end than the end, the second abutment portion and the second transmission portion are arranged in the circumferential direction of the first preset axis, the first transmission portion includes one of a long hole or a guide column, the second abutment portion includes the other of the long hole or the guide column, the long axis axis of the long hole extends along the second direction, and the guide column is gap-fitted in the long hole.

[0015] A developing box as above, wherein preferably, the first preset path is a rotational movement path of the first movable member with the second preset axis as the center line, and the second preset axis extends along the second direction.

[0016] A developing box as above, wherein, preferably, the first movable member is limited by the drum frame in the third direction, the first abutment portion is farther away from the second side end than the first transmission portion, the first transmission portion includes teeth formed on the outer circumference of the first movable member, and the third abutment portion includes a rack formed on the box body, the rack extends along the third direction, and the rack is meshed with the teeth on the outer circumference of the first movable member.

[0017] A developing box as above, wherein preferably, the first preset path is a linear moving path of the first movable member moving along the first direction, the first movable member is limited by the drum frame in the third direction, the first movable member includes a first movable component, a connecting component and a second movable component, the first movable component is located at the first side end, the second movable component is located at the second side end, the first movable component is connected to the second movable component through the connecting component, the first abutment portion is formed on the first movable component, the first transmission portion is formed on the first movable component and the second movable component, the first transmission portion includes a fourth guide slope, the starting end of the fourth guide slope is closer to the second side end and farther away from the sixth side end than the end.

[0018] A developing box as above, wherein, preferably, the first preset path is a linear moving path of the first movable member along the third direction, the first abutment portion and the first transmission portion are distributed sequentially along the third direction, the first abutment portion includes a fifth guide slope, and the starting end of the fifth guide slope is farther away from the second side end and closer to the sixth side end than the end.

[0019] A developing box as above, wherein preferably, the developing box is also provided with an elastic member, when the separation force output member contacts the first abutment portion and provides a separation force, the elastic member accumulates elastic force, when the separation force output member moves away from the first abutment portion and loses contact, the elastic member releases the elastic force, the first movable member returns to the initial position, and the developing roller contacts the photosensitive drum.

[0020] A developing box as above, wherein, preferably, the developing box further comprises a driving part arranged at the first side end, the driving part is used to receive the power output by the image forming device and rotate;

[0021] The first side end is provided with a protective cover, the protective cover is used to protect the driving part, and the first moving member is installed on the protective cover.

[0022] A developing box as above, wherein, preferably, the first side end moves in a swinging manner in a direction away from the photosensitive drum.

[0023] A developing box as above, wherein preferably, the third abutting portion is closer to the fourth side end than the third side end.

[0024] In the developing box as above, preferably, the third abutting portion is closer to the sixth side end than the axis of the developing roller in the third direction.

[0025] A developing box as above, wherein preferably, the developing box further comprises a pressure component, the pressure component is arranged at the fourth side end of the box body, and the pressure component is used to apply a force in the second direction to the box body.

[0026] A developing box as above, wherein preferably, the developing box also includes a connecting body, the connecting body is arranged at the fourth side end of the box body, and the connecting body is used to connect a plurality of box bodies so that the connected plurality of box bodies move synchronously in the second direction or the third direction.

[0027] A developing box as above, wherein preferably, the developing box also includes a bracket and a storage medium, the bracket is arranged at the second side end of the box body, the storage medium is installed on the bracket, the storage medium includes an electrical contact surface for contacting an electrical contact in an image forming device, along the second direction, the first end of the electrical contact surface is closer to the fourth side end than the second end of the electrical contact surface, and along the third direction, the first end of the electrical contact surface is closer to the sixth side end than the second end of the electrical contact surface.

[0028] A developing box as above, wherein, preferably, the developing box also includes a bracket and a storage medium, the bracket is arranged at the second side end of the box body, the storage medium is installed on the bracket, and the storage medium includes an electrical contact surface for contacting an electrical contact in an image forming device, and the electrical contact surface is a U-shaped structure.

[0029] Compared with the prior art, the utility model only needs to set a corresponding structure on one side of the developing box to apply force to the developing box, so that the developing box can move relative to the photosensitive drum, and the developing roller is transformed into a state separated from the photosensitive drum, thereby simplifying the structure of the developing box and making the developing box miniaturized. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram of the structure of a drum frame in some embodiments of the present application;

[0031] Figure 2 A schematic structural diagram of a developing box according to a first embodiment of the present application;

[0032] Figure 3 A schematic side view of a developing box according to a first embodiment of the present application;

[0033] Figure 4 A schematic side view of a developing box after the protective cover is omitted according to the first implementation mode of the first embodiment provided by the present application;

[0034] Figure 5 A schematic structural diagram of a protective cover of a developing box according to a first implementation mode of Example 1 provided in the present application;

[0035] Figure 6A schematic structural diagram of a retaining component of a developing cartridge according to a first implementation manner of Example 1 provided in the present application;

[0036] Figure 7 A schematic structural diagram of another angle of the retaining component of the developer cartridge of the first implementation mode of the first embodiment provided in the present application;

[0037] Figure 8 A schematic side view of a developing box with a portion of the protective cover structure omitted according to a first implementation manner of Example 1 provided in the present application;

[0038] Fig. 9 This is a structural schematic diagram of the first implementation mode of the embodiment 1 provided by the present application, in which the developing box and the photosensitive drum are in contact with each other;

[0039] Fig.10 This is a schematic structural diagram of a first implementation mode of Example 1 provided in the present application in which the developing box and the photosensitive drum are in a separated state;

[0040] Fig.11 A side view of a developing box and a photosensitive drum in a contact state with a portion of the protective cover structure omitted according to a first implementation mode of the first embodiment provided by the present application;

[0041] Fig.12 A side view of a developing box and a photosensitive drum in a separated state with a portion of the protective cover structure omitted according to a first implementation mode of the first embodiment provided by the present application;

[0042] Fig.13 A schematic structural diagram of a developing box according to a second implementation mode of Example 1 provided in the present application;

[0043] Fig.14 A schematic diagram of a side view of the developing box with the protective cover cut away when the developing box and the photosensitive drum are in contact with each other according to the second implementation of the first embodiment provided by the present application;

[0044] Fig.15 A schematic diagram of a side view of the developing box with the protective cover cut away when the developing box and the photosensitive drum are in a separated state according to the second implementation manner of the first embodiment provided by the present application;

[0045] Fig.16 A schematic diagram of a side view of a developing cartridge when the developing cartridge and the photosensitive drum are in a separated state according to a second implementation manner of the first embodiment provided by the present application;

[0046] Fig.17 A schematic structural diagram of a protective cover of a developing box according to a second implementation mode of Example 1 provided in the present application;

[0047] Fig.18A schematic structural diagram of a retaining component of a developing cartridge according to a second implementation manner of Example 1 provided in the present application;

[0048] Fig.19 This is a schematic diagram of the exploded structure of the retaining component of the second implementation mode of Example 1 provided in the present application;

[0049] Fig. 20 This is a structural schematic diagram of the developing box and the photosensitive drum in a contact state according to the second implementation mode of the first embodiment provided by the present application;

[0050] Fig.21 This is a structural schematic diagram of the second implementation manner of the first embodiment provided by the present application in which the developing box and the photosensitive drum are in a separated state;

[0051] Fig. 22 A schematic structural diagram of a developing box and a drum frame according to a first implementation mode of Example 2 provided in the present application;

[0052] Fig.23 A schematic structural diagram of a developing box according to a first implementation mode of Example 2 provided in the present application;

[0053] Fig.24 A schematic structural diagram of a protective cover of a developing box according to a first implementation mode of Example 2 provided in the present application;

[0054] Fig.25 A schematic diagram of an exploded structure of a retaining component of a developing cartridge according to a first implementation manner of Example 2 provided in the present application;

[0055] Fig.26 A schematic structural diagram of a developing box and a photosensitive drum in a contact state according to a first implementation mode of the second embodiment provided by the present application;

[0056] Fig. 27 This is a structural schematic diagram of the first implementation mode of the second embodiment provided by the present application in which the developing box and the photosensitive drum are in a separated state;

[0057] Fig.28 A schematic structural diagram of another angle of the developing box and the photosensitive drum in the first implementation manner of the second embodiment provided by the present application when the developing box and the photosensitive drum are in contact with each other;

[0058] Fig.29 for Fig.28 A schematic diagram of the enlarged structure at A in the middle;

[0059] Fig.30 A schematic structural diagram of another angle showing that the developing box and the photosensitive drum of the first implementation mode of the second embodiment provided by the present application are in a separated state;

[0060] Fig.31for Fig.30 A schematic diagram of the enlarged structure at B in the middle;

[0061] Fig.32 A schematic diagram of the assembly structure of the developing box and the drum unit of the second implementation mode of the second embodiment provided in the present application;

[0062] Fig.33 A schematic structural diagram of a developing box according to a second implementation mode of Example 2 provided in the present application;

[0063] Fig.34 This is a schematic structural diagram of the developing box of the second implementation mode of the second embodiment provided by the present application after omitting the retaining component;

[0064] Fig.35 A schematic structural diagram of a retaining component of a developing cartridge according to a second implementation manner of Example 2 provided in the present application;

[0065] Fig.36 A schematic structural diagram of a developing box and a photosensitive drum in a contact state according to a second implementation mode of Example 2 provided by the present application;

[0066] Fig.37 A schematic structural diagram of a developing box and a photosensitive drum in a separated state according to a second implementation mode of Example 2 provided by the present application;

[0067] Fig.38 A schematic structural diagram of a developing box in which a retaining member is in a separated state according to a second implementation manner of Example 2 provided by the present application;

[0068] Fig.39 for Fig.38 The enlarged schematic diagram of the center C;

[0069] Fig.40 for Fig.38 The enlarged schematic diagram of point D in the middle;

[0070] Fig.41 A schematic structural diagram of a developing box in which the retaining member is in a contact state according to a second implementation manner of Example 2 provided by the present application;

[0071] Fig.42 for Fig.41 The enlarged schematic diagram of point E in the middle;

[0072] Fig.43 for Fig.41 The enlarged schematic diagram of F in the middle;

[0073] Fig.44 A schematic structural diagram of a drawer board of a drum frame according to a third implementation manner of Example 2 provided in the present application;

[0074] Fig.45 A schematic diagram of a side view of the developing box with the protective cover cut away when the developing box and the photosensitive drum are in contact with each other according to the third implementation manner of the second embodiment provided by the present application;

[0075] Fig.46 A schematic diagram of a side view of the developing box with the protective cover cut away when the developing box and the photosensitive drum are in a separated state according to the third implementation manner of the second embodiment provided by the present application;

[0076] Fig.47 A schematic structural diagram of a protective cover of a developing box according to a third implementation manner of Example 2 provided in the present application;

[0077] Fig.48 A schematic structural diagram of a retaining component of a developing cartridge according to a third implementation manner of Example 2 provided in the present application;

[0078] Fig.49 A schematic structural diagram of a developing box and a photosensitive drum in a contact state according to a third implementation mode of Example 2 provided by the present application;

[0079] Fig.50 A schematic structural diagram of a developing box and a photosensitive drum in a separated state according to a third implementation manner of Example 2 provided by the present application;

[0080] Fig.51 It is a schematic exploded view of the partial structure of the developing box of the third embodiment provided in the present application.

[0081] Fig.52 Schematic diagram of the assembly structure of the developing box and the drum frame of the fourth embodiment provided in this application Figure 1 ;

[0082] Fig.53 Schematic diagram of the assembly structure of the developing box and the drum frame of the fourth embodiment provided in this application Figure 2 ;

[0083] Fig.54 This is a schematic diagram of the assembly structure of the developing box and the drum frame of the fifth embodiment provided in the present application;

[0084] Fig.55 A structural schematic diagram of the matching relationship between the storage medium and the electric contact when the developing cartridge and the photosensitive drum are in contact with each other in the sixth embodiment provided by the present application;

[0085] Fig.56 A schematic structural diagram of the matching relationship between the storage medium and the electric contact when the developing cartridge and the photosensitive drum of the sixth embodiment provided by the present application are in a separated state;

[0086] Fig.57This is a schematic diagram of the storage medium structure of a developer box according to another implementation of Example 6 provided in the present application. DETAILED DESCRIPTION

[0087] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention.

[0088] like Figures 2 to 54 As shown, the utility model provides a developing box 100, which can be detachably mounted on a drum frame 200 in an image forming device, and the image forming device can be a laser printer or an LED printer.

[0089] Reference Figure 1 as well as Figure 2 As shown, in order to better illustrate the developer box 100, the concepts of the first direction D1, the second direction D2 and the third direction D3 are cited. The first direction D1, the second direction D2 and the third direction D3 intersect each other, and are preferably perpendicular to each other. The length direction of the box body 101 and the drum frame 200 is defined as the first direction D1, having a left end and a right end in the first direction D1, the height direction of the box body 101 and the drum frame 200 is the second direction D2, having an upper end and a lower end in the second direction D2, and the width direction of the box body 101 and the drum frame 200 is the third direction D3, having a front end and a rear end in the third direction D3.

[0090] The image forming device is provided with a separation force output member 300 and a drum frame 200. The separation force output member 300 applies a separation force to the developing box 100. The drum frame 200 is provided with an installation cavity 204 for accommodating the developing box 100, wherein there can be at least one installation cavity 204. When there are multiple installation cavities 204, the multiple installation cavities 204 are arranged in parallel, and each installation cavity 204 is used to fix the developing box 100. That is to say, at least one developing box 100 can be correspondingly arranged on the drum frame 200, and each developing box 100 can accommodate developers of different colors, such as cyan, magenta, yellow, black, etc.

[0091] Reference Figure 1 As shown, the drum frame 200 has a first side plate 201, a second side plate 202 and a drawer plate 203 which are relatively arranged in a first direction D1, and a photosensitive drum 205 which is rotatably supported by the first side plate 201 and the second side plate 202, and the rotation axis of the photosensitive drum 205 is parallel to the first direction D1. The photosensitive drum 205 is used to receive the developer provided by the developing box 100, form an electrostatic latent image, and display the image on the imaging sheet.

[0092] The developing box 100 is detachably mounted on the drum frame 200 of the image forming apparatus. When the developing box 100 is mounted on the drum frame 200 , the first side plate 201 is adjacent to the first side end 102 of the developing box 100 , and the second side plate 202 is adjacent to the second side end 103 of the developing box 100 .

[0093] The drawer board 203 is located between the first side board 201 and the second side board 202 in the first direction D1, and the drawer boards 203 are arranged at intervals in the third direction D3. The drawer board 203 extends in the first direction D1, and is plate-shaped.

[0094] In some embodiments, the drawer plate 203 at one end of the drum frame 200 in the third direction D3 has a handle 206. The handle 206 is located on the outer side surface of the drawer plate 203 in the second direction D2. The handle 206 is configured to be held by a user to pull the developing cartridge 100 out of the image forming apparatus or push the developing cartridge 100 into the image forming apparatus.

[0095] The first side plate 201 is provided with a first gap 207. When each developing box 100 is attached to the mounting cavity 204, a retaining component (described in detail later) of each developing box 100 is allowed to pass through the first gap 207 and contact the separation force output member 300 of the image forming device to receive the pressing force.

[0096] The first side plate 201 further has through holes 208, each of which is formed corresponding to each mounting cavity 204. Each through hole 208 penetrates the first side plate 201 in the first direction D1. In a state where each developing cartridge 100 is attached to the mounting cavity 204, each developing cartridge 100 is allowed to receive a driving force through a driving member of the image forming device passing through the through hole 208.

[0097] A second gap 209 is provided at the second side plate 202, and electric contacts 210 and protrusions 211 are provided on opposite sides of the second gap 209. The electric contacts 210 can be extended and retracted in the third direction D3. The electric contacts 210 and the protrusions 211 are arranged opposite to each other in the third direction D3. The protrusions 211 extend from top to bottom in the second direction D2 and extend in a direction close to the electric contacts 210 in the third direction D3. The electric contacts 210 are used to contact the storage medium 119 on the developing box 100 so that the image forming device can recognize the developing box 100.

[0098] A first platform portion 212 is provided near the first side plate 201 , and a second platform portion is provided near the second side plate 202 . The extension directions of the first platform portion 212 and the second platform portion are both substantially parallel to the third direction D3 .

[0099] like Figures 2 to 21 As shown, the developing box 100 provided in the present application includes a box body 101, a developing component, a transmission component and an identification component.

[0100] like Figure 2 as well as Figure 3 As shown, the box body 101 has a receiving cavity for receiving the developer, and the box body 101 has a first side end 102 and a second side end 103 arranged oppositely in the first direction D1, a third side end 104 and a fourth side end 105 arranged oppositely in the second direction D2, and a fifth side end 106 and a sixth side end 107 arranged oppositely in the third direction D3. The first side end 102 and the second side end 103 are respectively the right end and the left end of the box body 101 in the first direction D1, the third side end 104 and the fourth side end 105 are respectively the lower end and the upper end of the box body 101 in the second direction D2, and the fifth side end 106 and the sixth side end 107 are respectively the front end and the rear end of the box body 101 in the third direction D3. The above description does not limit the positions of the different side ends of the box body 101, but is only for the convenience of description. For example, the first side end 102 can also be set at the left end of the box body 101, and the second side end 103 can also be set at the right end of the box body 101.

[0101] A protective cover 108 is detachably fixedly mounted on the first side end 102 of the box body 101 , and the protective cover 108 at least covers a portion of the transmission assembly to protect the transmission assembly.

[0102] like Figure 2 As shown, the developing assembly includes a developing roller 109, which is located at the third side end 104 and is rotatably supported by the first side end 102 and the second side end 103, with its rotation axis parallel to the first direction D1. The developing roller 109 is used to contact the photosensitive drum 205 on the image forming device and provide developer to the photosensitive drum 205.

[0103] The developing assembly also includes a stirring frame (not shown in the figure) and a powder feeding roller (not shown in the figure), and both the stirring frame and the powder feeding roller are rotatably supported by the first side end 102 and the second side end 103. The rotation axes of the stirring frame and the powder feeding roller are parallel to the first direction D1, and the powder feeding roller is arranged adjacent to the developing roller 109. In the second direction D2, the powder feeding roller is arranged between the developing roller 109 and the stirring frame. In this embodiment, there is only one stirring frame, which is used to stir the developer in the box body 101, so that the developer generates friction and prevents the developer from agglomerating. In other embodiments, in order to better stir the developer, multiple stirring frames can be set. The stirring frame has multiple blades, and the stirring frame stirs the developer through the blades.

[0104] A powder knife (not shown) is also provided in the developer box 100. The powder knife is used to contact the developer roller 109, so as to control the thickness of the developer layer on the developer roller 109. The powder knife includes a knife holder and a blade. It is known that the powder knife in this embodiment is a steel knife, that is, the knife holder and the blade are both made of steel material. In other embodiments, the powder knife can be made of other materials. It is known that when observed from the first direction D1, the powder knife is roughly L-shaped. If the L-shaped powder knife is surrounded by a complete rectangle, the rotation center of the driving part of the developer box 100 is not within the rectangular range. In other embodiments, the powder knife and the driving part do not completely overlap in the first direction D1. It is known that in order to ensure that the blade is more stably welded to the knife holder, spot welding is adopted in this embodiment to ensure that the welding marks are more uniform. Other welding methods can be adopted in other embodiments.

[0105] like Figure 4 As shown, the transmission assembly is arranged at the first side end 102 of the box body 101, and the transmission assembly includes a driving part rotatably mounted on the first side end 102 of the box body 101, and the rotation axis of the driving part is parallel to the first direction D1. The driving part includes a coaxially integrally formed driving gear 110 and a power receiving part 111, and the driving gear 110 is closer to the first side end 102 of the box body 101 than the power receiving part 111 in the first direction D1. The driving gear 110 includes a large-diameter driving gear and a small-diameter driving gear rotating coaxially, and the large-diameter driving gear is farther away from the first side end 102 than the small-diameter driving gear in the first direction D1. The power receiving part 111 is used to connect with the power output shaft on the image forming device to receive the power output by the image forming device.

[0106] Continue to refer to Figure 4 As shown, the transmission assembly also includes a developing gear 112, a powder feeding gear 113, an idler wheel 114 and a stirring gear 115. The developing gear 112 is fixedly mounted on the first end portion of the roller shaft of the developing roller 109 and rotates coaxially with the developing roller 109, the powder feeding gear 113 is coaxially fixedly mounted on one end of the powder feeding roller close to the first side end 102 of the box body 101 and rotates together with the powder feeding roller, the stirring gear 115 is coaxially fixedly mounted on one end of the stirring frame close to the first side end 102 of the box body 101 and rotates together with the stirring frame, the idler wheel 114 is rotatably mounted on the first side end 102 of the box body 101, and the idler wheel 114 includes a large-diameter idler wheel and a small-diameter idler wheel that rotate coaxially, and the large-diameter idler wheel is farther away from the first side end 102 than the small-diameter idler wheel in the first direction D1.

[0107] The rotation axis of the stirring gear 115 is farther from the rotation axis of the driving gear 110 than the rotation axis of the idler wheel 114. The developing gear 112 is meshed with the large-diameter driving gear, the powder feeding gear 113 and the large-diameter idler wheel are respectively meshed with the small-diameter driving gear, and the small-diameter idler wheel is meshed with the stirring gear 115. The power receiving portion 111 receives the power output by the image forming device and drives the driving gear 110 to rotate. The driving gear 110 transmits the power to the developing gear 112, the powder feeding gear 113 and the idler wheel 114 meshed therewith, so that the developing roller 109 and the powder feeding roller start to rotate, and the idler wheel 114 transmits the power to the stirring gear 115 meshed therewith, so that the stirring frame starts to rotate and stirs the developer.

[0108] like Figure 3 As shown, the protective cover 108 is fixedly mounted on the box body 101 in a detachable manner, the protective cover 108 does not move relative to the box body 101, the protective cover 108 can move together with the box body 101, the protective cover 108 does not axially limit the powder feeding roller, and a first load-bearing portion 116 is convexly provided on the protective cover 108, which is preferably integrally formed with the protective cover 108, or can be detachably combined and fixedly mounted on the protective cover 108, the first load-bearing portion 116 is a protrusion protruding outward along the first direction D1, in this embodiment, the first load-bearing portion 116 is an arc-shaped protrusion, and in other embodiments it can be other shapes, the first load-bearing portion 116 includes an arc surface, the first load-bearing portion 116 is used to make the arc surface contact with the components in the drum frame 200 to support the weight of the developing box 100 when the developing box 100 is installed in the drum frame 200, and in the third direction D3, the first load-bearing portion 116 at least partially overlaps with the drive protection portion.

[0109] like Figure 4 As shown, the second side end 103 of the box body 101 is provided with a second load-bearing portion 117, and the second load-bearing portion 117 extends in the first direction D1 in a direction away from the second side end 103. The second load-bearing portion 117 has the same function as the first load-bearing portion 116, and both are in contact with the drum frame 200 to support the developing box 100 when the developing box 100 is installed in the drum frame 200, that is, the load-bearing portion in this embodiment includes the first load-bearing portion 116 and the second load-bearing portion 117, and in order to make the design of the developing box 100 beautiful and maintain the balance of the developing box 100 in the image forming device, the second load-bearing portion 117 has the same shape as the first load-bearing portion 116, both are arc-shaped protrusions, and the second load-bearing portion 117 and the first load-bearing portion 116 are overlapped in the first direction D1.

[0110] When the developing cartridge 100 is mounted on the drum frame 200 of the image forming apparatus, the first load-bearing portion 116 contacts the first platform portion 212 on the drum frame 200, and the second load-bearing portion 117 contacts the second platform portion, so that the developing cartridge 100 is stably mounted in the drum frame 200. In other embodiments, the second load-bearing portion 117 may have a different shape from the first load-bearing portion 116, the second load-bearing portion 117 may not overlap with the first load-bearing portion 116, or only one load-bearing portion may be provided.

[0111] like Figure 2 As shown, the identification component includes a bracket 118 and a storage medium 119. The bracket 118 is disposed at the second side end 103 of the box body 101 in the first direction D1. Specifically, the bracket 118 can be integrally formed with the box body 101, or can be installed on the box body 101. Preferably, the bracket 118 is detachably installed on the box body 101. The storage medium 119 is used to store information such as the model and newness of the developing box 100. The storage medium 119 is installed on the bracket 118. Preferably, the storage medium 119 is detachably installed on the bracket 118. The storage medium 119 includes an electrical contact surface 176 for contacting the electrical contact 210 in the image forming device. Please refer to Fig.55 and Fig.56 The electrical contact surface 176 faces the sixth side end 107 in the third direction D3, and the storage medium 119 transmits the information of the developing box 100 to the image forming device through the electrical contact surface 176, so that the developing box 100 is recognized by the image forming device.

[0112] The image forming apparatus has a contact state and a separation state. In the contact state of the image forming apparatus, the developing roller 109 and the photosensitive drum 205 of the drum frame 200 are in contact with each other in a state where the developing cartridge 100 is attached to the mounting cavity 204. In the separation state of the image forming apparatus, the developing roller 109 and the photosensitive drum 205 of the drum frame 200 are separated from each other. When the developing cartridge 100 is attached to the mounting cavity 204 of the drum frame 200, the image forming apparatus is in the contact state.

[0113] The developing box 100 provided in the embodiment of the present application is provided with a first moving member 120, which is provided at the first side end 102 and has first abutting portions 122a, 122b, 122c, 122d, 122e and first transmitting portions 123a, 123b, 123c, 123d, 123e, and the first abutting portions 122a, 122b, 122c, 122d, 122e are used to receive the separation force output member 300 of the image forming device moving along the first direction D1. The separation force is used to drive the first movable member 120 to move along the first preset path, and the third abutting portion 130a, 130b, 130c, 130d, 130e is provided on the box body or the drum frame 200 of the image forming device. The first transmission portion 123a, 123b, 123c, 123d, 123e is used to abut with the third abutting portion 130a, 130b, 130c, 130d, 130e to drive the box body 101 to move, so that the developing roller 109 is separated from the photosensitive drum 209.

[0114] Embodiment 1

[0115] In this embodiment, a retaining member is further provided outside the first side end 102 of the developing box 100. The retaining member may be provided on the protective cover 108. Specifically, the protective cover 108 is provided with a placement portion on a side away from the first side end 102 in the first direction D1, and the retaining member is provided in the placement portion. The retaining member is a member used to switch the state of the image forming device between the contact state and the separation state. In this embodiment, when the image forming device is switched from the contact state to the separation state, the retaining member is used to keep the developing roller 109 in a separation state with the photosensitive drum 205 in the second direction D2 or the third direction D3.

[0116] In this embodiment, the holding component includes a first moving member 120 and a second moving member 121, and the first moving member 120 and the second moving member 121 are arranged at the first side end 102 in the first direction D1, wherein:

[0117] The first moving member 120 has first abutting portions 122a, 122b and first transmitting portions 123a, 123b, wherein the first abutting portions 122a, 122b are used to receive the separation force provided by the separating force output member 300 to drive the first moving member 120 to move along the first preset path. A driving unit is provided on the image forming device, for example, the driving unit is a motor, and the separating force output member 300 has a cylindrical shape and extends in the first direction D1. The separating force output member 300 can move between a contact position and a spacing position in the first direction D1. When in the contact position, the separating force output member 300 contacts the first abutting portions 122a, 122b of the first moving member 120 through the first spacing 207 provided on the first side plate 201; and when in the spacing position, there is a spacing between the separating force output member 300 and the first abutting portions 122a, 122b of the first moving member 120, that is, the separating force output member 300 does not contact the first moving member 120.

[0118] The second moving member 121 is located within the first preset path. During the movement of the first moving member 120, the first moving member 120 contacts the second moving member 121 to apply a force to the second moving member 121. The second moving member 121 has second abutting portions 124a, 124b and second transmitting portions 125a, 125b. The second abutting portions 124a, 124b are used to abut against the first transmitting portions 123a, 123b, so that the second moving member 121 moves along the second preset path. Movement, a third abutment portion 130a, 130b is provided on the box body 101 or the drum frame 200, and the third abutment portion 130a, 130b is located within the second preset path range. The second movable member 121 will contact with the third abutment portion 130a, 130b during the movement, and the second transmission portion 125a, 125b is used to abut with the third abutment portion 130a, 130b to drive the box body 101 to move, so that the developing roller 109 is separated from the photosensitive drum 205.

[0119] The first preset path is the linear movement path of the first moving member 120 moving along the third direction D3; the second preset path is the linear movement path of the second moving member 121 moving along the second direction D2, or the second preset path is the rotational movement path of the second moving member 121 with the first preset axis as the center line, and the first preset axis extends along the first direction d1.

[0120] Furthermore, the developing box 100 is also provided with an elastic member 126. When the separation force output member 300 contacts the first abutting portions 122a, 122b and provides a separation force, the elastic member 126 accumulates elastic restoring force. When the separation force output member 300 moves away from the first abutting portions 122a, 122b and loses contact, the elastic member 300 releases the elastic restoring force, the first movable member 120 and the second movable member 121 return to their initial positions, and the developing roller 109 contacts the photosensitive drum 205.

[0121] When each developing cartridge 100 is attached to the mounting cavity 204 of the drum frame 200, the developing roller 109 of each developing cartridge 100 contacts the corresponding photosensitive drum 205. At this time, the separation force output member 300 provided on the image forming apparatus is in a spaced position with the developing cartridge 100 in a spaced state.

[0122] When receiving the instruction of the image forming device, in order to separate the developing roller 109 from the photosensitive drum 205, the driving unit drives the separation force output member 300 to move from the spacing position to the contact position in the first direction D1. Thus, the separation force output member 300 contacts the first moving member 120 and applies an axial pressing force along the first direction D1 to the first moving member 120. Specifically, the separation force output member 300 moves along the first direction D1 to contact the first moving member 120, and the contact position of the separation force output member 300 and the first moving member 120 is located at the first abutting portion 122a, 122b. The separation force output member 300 moves along the first direction D1, and the first abutting portion 122a, 122b receives the force along the first direction D1, so that the first moving member 120 moves along the first preset path, and the first transmission portion 123a, 123b contacts the second moving member 121 on the first preset path.

[0123] The second abutting portion 124a, 124b of the second movable member 121 receives the force from the first movable member 120, so that the second movable member 121 moves along the second preset path. The box body 101 or the drum frame 200 is provided with a third abutting portion 130a, 130b, and the third abutting portion 130a, 130b is located within the second preset path. The second transmission portion 125a, 125b is used to abut with the third abutting portion 130a, 130b to drive the box body 101 to move in the second direction D2 or the third direction D3 toward a direction away from the photosensitive drum 205, so that the developing roller 109 is separated from the photosensitive drum 205.

[0124] When the image forming device receives an instruction and the separation force output member 300 moves from the contact position to the spacing position along the first direction D1, the first movable member 120 returns along the first preset path under the force of the elastic member 126, and the developing box 100 moves toward the direction close to the photosensitive drum 205 under the action of the separation force output member 300 and the first movable member 120, and the developing roller 109 and the photosensitive drum 205 are transformed into a contact state.

[0125] First Implementation Method

[0126] Reference Figures 2 to 12 As shown, in this embodiment, the first preset path is a linear moving path of the first moving member 120 moving along the third direction D3, and the second preset path is a linear moving path of the second moving member 121 moving along the second direction D2.

[0127] Reference Figure 5 as well as Figure 8 As shown, the placement portion is sequentially provided with an outer placement portion and an inner placement portion in the direction from the fifth side end 106 toward the sixth side end 107 in the third direction D3, the outer placement portion is formed as a first guide groove 127a concave along the first direction D1, and the inner placement portion is formed as a connecting hole 162a extending along the third direction D3 and a second guide groove 128a extending along the second direction D2. The connecting hole 162a connects the first guide groove 127a and the second guide groove 128a. The first guide groove 127a is provided with a guide hole 129a in the first direction D1, and the two walls of the first guide groove 127a in the second direction D2 are also provided with T-shaped guide portions 131a. The second guide groove 128a is provided with an opening at a position close to the fourth side end 105 in the second direction D2.

[0128] Reference Figure 5 As shown, the third abutting portion 130a is disposed on the protective cover 108, and the third abutting portion 130a is closer to the fourth side end 105 of the box body 101 in the second direction D2 than the second guide groove 128a. The third abutting portion 130a is disposed facing the opening of the second guide groove 128a in the second direction D2. In an optional embodiment, the third abutting portion 130a can be provided with a plane, an arc surface or a curved surface, etc., and no specific limitation is made to this.

[0129] Those skilled in the art will appreciate that the placement portion may be integrally formed with the protective cover 108, or may be provided as a component detachably mounted on the protective cover 108. The third abutting portion 130a may be provided on the protective cover 108, that is, indirectly provided on the box body 101, or directly provided on the box body 101.

[0130] The first moving member 120 is disposed at the first side end 102 of the box body 101 in the same manner as that of the first moving member 120, and is not further described herein.

[0131] On the first movable member 120, the first abutment portion 122a and the first transfer portion 123a are sequentially distributed along the third direction D3. The first abutment portion 122a is closer to the fifth side end 106 than the first transfer portion 123a. The first abutment portion 122a includes a first guide slope 132. The starting end of the first guide slope 132 is farther away from the second side end 103 and closer to the sixth side end 107 than the end end.

[0132] The second abutting portion 124a and the second transferring portion 125a are sequentially distributed along the second direction D2. The second abutting portion 124a is closer to the fifth side end 106 than the second transferring portion 125a. The second abutting portion 124a includes a second guiding slope 133. The starting end of the second guiding slope 133 is farther away from the third side end 104 and the sixth side end 107 than the end end.

[0133] In this embodiment, refer to Figure 6 As shown, the elastic member 126 is sleeved on the first moving member 120, and the elastic member 126 is specifically a spring, and the spring coil is sleeved on the first transmission part 123a. In the natural state, the spring naturally expands and contracts, and no elastic force is accumulated. During the movement of the first moving member 120 along the third direction D3, the spring is compressed and accumulates elastic force. After the separation force output member 300 releases the resistance to the first moving member 120, the elastic force of the spring is released, so that the first moving member 120 returns to the natural state, and the second moving member 121 also returns to the initial position due to gravity. In some embodiments, in order to make the first moving member 120 and the second moving member 121 return to the initial position, the elastic member 126 can also be sleeved on the second moving member 121. The elastic member 126 can also be other structures with elastic force.

[0134] Reference Figure 6 as well as Figure 7 As shown, the first movable member 120 is further provided with a first limiting portion 134a, which extends along the first direction D1 to limit the moving range of the first movable member 120. When the separation force output member 300 moves along the first direction D1 and the first movable member 120 moves along the third direction D3, when the first limiting portion 134a contacts the separation force output member 300, the separation force output member 300 and the first movable member 120 stop moving, so that the second movable member 121 also stops moving, and the elastic member 126 is in a compressed state in the third direction D3. At this time, the developer box 100 keeps the developing roller 109 and the photosensitive drum 205 in a separated state under the joint action of the separation force output member 300 and the first movable member 120.

[0135] Optionally, the first limiting portion 134a can be set to a plane or a curved surface, etc.; the first guiding slope 132 and the second guiding slope 133 can be planes, curved surfaces, etc.; the first transmission portion 123a can be set to a prism, a rectangular parallelepiped, etc.; the second transmission portion 125a can be set to an arc surface, a curved surface, etc., or the second transmission portion 125a can include a protrusion or other structure.

[0136] Further, refer to Figure 7As shown, the first moving member 120 is further provided with a guide protrusion 135a on one side close to the first side end 102 of the box body 101 in the first direction D1. The guide protrusion 135a can be installed in the guide hole 129a to guide the first moving member 120 to move along the third direction D3.

[0137] The first movable member 120 is at least partially disposed in the first guide groove 127a, and at least a portion of the first movable member 120 is also disposed in the inner placement portion. Specifically, the first abutment portion 122a is located in the first guide groove 127a, and the first transfer portion 123a extends into the second guide groove 128a after passing through the connecting hole 162a. The first guide groove 127a guides the movement of the first movable member 120 in the third direction D3 through the guide hole 129a and the T-shaped guide portion 131a, and limits the first movable member 120 from detaching from the protective cover 108 in the first direction D1.

[0138] Reference Figure 3 As shown, the elastic member 126 is arranged in the first guide groove 127a, one end of the elastic member 126 abuts against the first movable member 120, and the other end abuts against the inner wall of the first guide groove 127a. The elastic member 126 can be extended and retracted in the third direction D3 as the first movable member 120 moves in the third direction D3.

[0139] Reference Figure 8 As shown, the second moving member 121 is disposed in the second guiding groove 128 a , and the second guiding groove 128 a is used to guide the movement of the second moving member 121 in the second direction D2 .

[0140] Continue to refer to Figures 8 to 12 As shown, when the developing box 100 receives the force of the separation force output member 300 of the image forming device, the first abutment portion 122a is used to receive the force, and the separation force output member 300 moves along the first direction D1, and first contacts with the starting end of the first guide slope 132. As the separation force output member 300 moves further, a force is applied to the first movable member 120. The first guide slope 132 decomposes this force into a component force parallel to the third direction D3, so that the first movable member 120 moves in the third direction D3 toward the side away from the fifth side end 106, and therefore, the first transmission portion 123a moves along the third direction D3.

[0141] During the movement of the first moving member 120, the first transfer portion 123a contacts the starting end of the second guide slope 133 of the second abutting portion 124a. As the first moving member 120 continues to move, the first moving member 120 applies a force to the second moving member 121. The second guide slope 133 decomposes this force into a component force parallel to the second direction D2. The second moving member 121 moves along the second direction D2 under the guidance of the second guide groove 128a. Therefore, the second transfer portion 125a moves along the second direction D2. During the movement of the second transfer portion 125a in the second direction D2, the second transfer portion 125a passes through the opening of the second guide groove 128a. The second transfer portion 125a contacts the third abutting portion 130a through the opening. The second moving member 121 transmits the force along the second direction D2 to the protective cover 108 through the second transfer portion 125a.

[0142] That is to say, by the movement of the first moving member 120 along the third direction D3 and the movement of the second moving member 121 along the second direction D2, the active force of the separating force output member 300 is converted into the active force towards the fourth side end 105 along the second direction D2 and is transmitted to the protective cover 108, and the protective cover 108 drives the box body 101 to move upwards in the second direction D2, i.e., move towards the direction away from the photosensitive drum 205. This makes the developing roller 109 and the photosensitive drum 205 converted into a separated state. In the process, because the first moving member 120, the second moving member 121 and the third abutting portion 130a are arranged on the first side end of the box body 101, therefore, the first side end 101 moves towards the direction away from the photosensitive drum 205 in a swinging manner around the second side end 103.

[0143] During this process, the elastic member 126 moves along the third direction D3 along with the first moving member 120. Since the end of the elastic member 126 is blocked by the first guide groove 127a, the elastic member 126 cannot continue to move along the third direction D3. The elastic member 126 is compressed and the elastic force is accumulated.

[0144] When the separation force output member 300 of the image forming device stops outputting the force, the movement of the first movable member 120 is not affected by the separation force output member 300, the elastic force of the elastic member 126 is released, and the first movable member 120 moves in the third direction toward the fifth side end 106 under the force of the elastic member 126. The second movable member 121 moves in the second direction D2 toward the developing roller 109 under the action of gravity, and the developing roller 109 re-contacts with the photosensitive drum 205.

[0145] In this way, in order to realize the transition between the contact state and the separation state of the image forming device, it is only necessary to set the first moving member 120 on one side of the developing box 100 in the first direction D1, so that the developing roller 109 can realize the transition between the contact state and the separation state at both sides of the developing box 100 in the first direction D1. And because the force point of the first moving member 120 applied to the protective cover 108 and the box body 101 in the second direction D2 is close to the sixth side end 107 of the box body 101, the developing roller 109 can be separated from the photosensitive drum 205 under a relatively small force.

[0146] In addition, since the first moving member 120 only needs to be provided on one side of the developing cartridge 100 , the structure of the developing cartridge 100 can be simplified, so that the developing cartridge 100 can be miniaturized.

[0147] Optionally, the third abutment portion 130a is closer to the fourth side end 105 than the third side end 104, so that the first movable member 120 drives the box body 101 to move toward the fourth side end 105, that is, away from the photosensitive drum 205, through the second movable member 121, to achieve a better effect.

[0148] Optionally, the third abutment portion 130a is closer to the sixth side end 107 than the axis of the developing roller 109 in the third direction D3, so that the first movable member 120 drives the box body 101 to move toward the sixth side end 107, that is, away from the photosensitive drum 205, through the second movable member 121, to achieve a better effect.

[0149] In some embodiments, the second guiding slope 133 of the second abutting portion 124a may also be disposed on the first transferring portion 123a, and the starting end of the second guiding slope on the first transferring portion 123a is closer to the third side end 104 and farther away from the fifth side end 106 than the end, which can also achieve the above effect.

[0150] Second implementation method

[0151] Reference Figures 13 to 21 As shown, this embodiment is substantially the same as the first embodiment, and the difference from the first embodiment lies in the structure of the protective cover 108, the holding component, and the matching relationship between the holding component and the drum frame 200, specifically:

[0152] In this embodiment, the first preset path is a linear movement path of the first moving member 120 moving along the third direction D3, and the second preset path is a rotational movement path of the second moving member 121 with the first preset axis as the center line. The first preset axis extends along the first direction D1.

[0153] Reference Fig.17As shown, the placement portion includes a first guide groove 127b, and a guide hole 129b and a connecting hole 162b are provided on the first guide groove 127b. Specifically, the first guide groove 127b is formed as a groove having an opening near the fifth side end 106 in the third direction D3, and the first guide groove 127b has a bottom wall at the other end opposite to the opening, and has side walls around the opening and the bottom wall. The guide holes 129b are provided on the two side walls arranged opposite to each other in the first direction D1, the guide holes 129b are also provided on the side wall near the fourth side end 105 in the second direction D2, and the T-shaped guide portion 131b is provided on the side wall near the third side end 104 in the second direction D2, and the connecting hole 162b is provided on the bottom wall of the first guide groove 127b.

[0154] The first abutting portion 122b and the first transmitting portion 123b are sequentially distributed along the third direction D3, the first abutting portion 122b has a clamping portion 136 in the third direction D3, the first transmitting portion 123b has a clamped portion 137, the clamped portion 137 is inserted into the clamping portion 136 along the third direction D3 to connect the first abutting portion 122b and the first transmitting portion 123b. The clamping portion 136 and the clamped portion 137 can also be interchanged.

[0155] Reference Fig.17 and Fig.18 The first abutment portion 122b is provided with a guide protrusion 135b at one end close to the fourth side end 105, and the guide protrusion 135b can be installed in the guide hole 129b. A guided groove 138 is also provided on the other end opposite to the guide protrusion 135b. The guided groove 138 forms a sliding fit with the T-shaped guide portion 131b. Through the above guide fit, the first moving member 120 is guided to move along the third direction D3.

[0156] Reference Fig.18 as well as Fig.19 The first abutting portion 122b is provided with a first limiting portion 134b at both opposite ends in the first direction D1. The first limiting portion 134b is used to limit the moving distance of the first moving member 120 in the third direction D3. The first limiting portion 134b is formed as a cantilever structure that can be deformed relative to the first abutting portion 122b in the first direction D1, and the free end of the cantilever also has a protruding locking structure.

[0157] The first abutment portion 122b includes a third guide bevel 139, the starting end of the third guide bevel 139 is farther away from the first side end 102 and the fifth side end 106 than the end. The separation force output member 300 moves along the first direction D1 and first contacts the starting end of the third guide bevel 139. As the separation force output member 300 moves further, a force is applied to the first movable member 120. The third guide bevel 139 decomposes the force into a component force parallel to the third direction D3, so that the first movable member 120 moves in the third direction D3 toward the side away from the fifth side end 106.

[0158] The first transmission portion 123 b includes one of the long hole 141 and the guide post 144 , and the second abutment portion includes the other of the long hole 141 and the guide post 144 . The long axis of the long hole 141 extends along the second direction D2 , and the guide post 144 is loosely fitted in the long hole 141 .

[0159] In this embodiment, the first transmission part 123b includes a connecting arm 140 connected to the clamped part 137, the connecting arm 140 is formed into a columnar structure inclined relative to the clamped part 137, and a long hole 141 is provided at the end of the connecting arm 140, and the long axis of the long hole 141 extends in a direction parallel to the second direction D2, and the first transmission part 123b moves along the third direction D3 with the first abutting part 122b. The long hole 141 can be a through hole or a blind hole.

[0160] In the present embodiment, the elastic member 126 is a spring, one end of the spring is connected to the first movable member 120, and the other end is connected to the bottom wall of the first guide groove 127b. In the natural state, the spring naturally expands and contracts without accumulating elastic force. During the movement of the first movable member 120 along the third direction D3, the spring is compressed and accumulates elastic force. After the separation force output member 300 releases the resistance to the first movable member 120, the elastic force of the spring is released, so that the first movable member 120 returns to the natural state.

[0161] Reference Fig.17 As shown, a mounting column 142 is protruded from the first load-bearing portion 116 on the protective cover 108, and the axial direction of the mounting column 142 is the extension direction of the first preset axis. The second movable member 121 is rotatably arranged on the mounting column 142, and the second abutting portion 124b and the second transmission portion 125b are arranged in the circumferential direction of the first preset axis, and the second abutting portion 124b and the second transmission portion 125b maintain synchronous rotation.

[0162] In this embodiment, refer to Fig.19As shown, the second abutment portion 124b includes a cantilever rod 143 formed to be convexly arranged on the outer surface of the second moving member 121, a guide post 144 extending along the third direction D3 is provided at the free end of the cantilever rod 143, and the guide post 144 is clearance-fitted in the long hole 141. During the movement of the first moving member 120 in the third direction D3, the inner wall surface of the long hole 141 abuts against the outer wall surface of the guide post 144, and the guide post 144 is pushed to move toward the direction of the third side end 104 while moving toward the sixth side end 107, thereby driving the second moving member 121 to rotate forward. In some embodiments, the guide post 144 of the second moving member 121 is arranged on the first moving member 120, and the long hole 141 of the first moving member 120 is arranged on the second moving member 121, which can also achieve the above effect.

[0163] The second transfer portion 125b includes an arc-surface protrusion protruding from the outer surface of the second movable member 121, and the arc-surface protrusion is used to contact the third abutting portion 130b. The third abutting portion 130b is formed on the top surface of the first platform portion 212, and the third abutting portion 130b is perpendicular to the second direction D2. During the positive rotation of the second movable member 121, the arc-surface protrusion presses on the third abutting portion 130b, and the third abutting portion 130b applies a reaction force to the second transfer portion 125b. The second transfer portion 125b transfers the reaction force to the protective cover 108, and the protective cover 108 drives the box body 101 to move in the second direction D2 toward a direction away from the photosensitive drum 205, so that the developing roller 109 and the photosensitive drum 205 are transformed into a separated state.

[0164] The first moving member 120 is installed in the first guide groove 127b, and the second moving member 121 is installed on the mounting column 142. Specifically, the first abutting portion 122b of the first moving member 120 is installed in the first guide groove 127b, and the first moving member 120 is slidably installed in the first guide groove 127b by the guided groove 138 under the guiding action of the T-shaped guide portion 131b in the third direction D3, and at the same time, the first limiting portion 134b is deformed in the first direction D1, and the first limiting portion 134b moves to the guide holes 129b respectively located on both sides in the first direction D1 in the third direction D3, and the first limiting portion 134b is deformed, and the locking structure of the first limiting portion 134b forms a locking relationship with the first guide groove 127b along the first direction D1, and the guide protrusion 135b is located in the guide hole 129b in the second direction D2. At this time, the second transmission portion 125 b of the second moving member 121 is not in contact with the third abutting portion 130 b on the first platform portion 212 of the drum frame 200 .

[0165] In this way, when the box body 101 receives the effect of the separation force output member 300 of the image forming device, the first abutting portion 122b is used to receive the effect of the force, thereby pushing the first moving member 120 to move in the third direction D3, the elastic member 126 is compressed in the third direction D3, and the movement of the first transmitting portion 123b in the third direction D3 drives the guide post 144 located in the long hole 141 to move, and because the second moving member 121 is installed on the mounting post 142, the second moving member 121 rotates around the axis of the second moving member 121 driven by the first moving member 120 through the cooperation of the guide post 144 and the long hole 141. Thereby, the second transmitting portion 125b of the second moving member 121 rotates to a state of contact with the third abutting portion 130b, and at this time, the second moving member 121 receives the supporting force from the third abutting portion 130b in the second direction D2.

[0166] In an optional embodiment, the first movable member 120 can be configured as a component integrally formed with the first abutment portion 122b and the first transmission portion 123b, and the structure of the placement portion on the protective cover 108 for installing the first movable member 120 needs to be adjusted accordingly; the second movable member 121 can also be configured as a cam structure that can move horizontally relative to the protective cover 108, and a guide groove for moving the second movable member 121 needs to be provided on the protective cover 108, that is, the second movable member 121 can move in the third direction D3 with the first movable member 120, thereby realizing the transition of the contact state between the second transmission portion 125b and the third abutment portion 130b, or in other words, realizing the transition of the contact state between the cam surface and the third abutment portion 130b.

[0167] When each developing cartridge 100 is attached to the mounting cavity 204 of the drum frame 200, the developing roller 109 of each developing cartridge 100 contacts the corresponding photosensitive drum 205. At this time, the separation force output member 300 of the image forming apparatus is in a spaced position with a space between the developing cartridge 100 and the second transmission portion 125b of the holding member and the third abutting portion 130b of the drum frame 200 are in a non-contact state.

[0168] Reference Fig. 20 as well as Fig.21As shown, when the image forming device receives the instruction, the separation force output member 300 moves from the spacing position to the contact position, the separation force output member 300 contacts the first abutment portion 122b and applies a force thereto, and the first moving member 120 is forced to move along the third direction D3 under the guidance of the guide hole 129b and the T-shaped guide portion 131b, so the long hole 141 at the end of the first transmission portion 123b moves along the third direction D3, and because the guide column 144 is located in the long hole 141, the first moving member 120 transmits the force along the third direction D3 to the second moving member 121, and because the second moving member 121 is rotatably connected to the mounting column 142, the second moving member 121 rotates around the axis of the second moving member 121 after receiving the force of the third direction D3. Therefore, the second transmission portion 125b rotates around the axis of the second moving member 121.

[0169] The second transmission part 125b receives the supporting force of the third abutting part 130b along the second direction D2. Due to the mounting relationship between the retaining member and the protective cover 108, and the abutting relationship between the retaining member and the separation force output member 300, after the second moving member 121 receives the supporting force through the second transmission part 125b, the supporting force will be transmitted to the box body 101. Therefore, the box body 101 is subjected to the force and moves along the second direction D2, so that the developing roller 109 moves relative to the photosensitive drum 205 in the second direction D2, and the first side end 103 moves in a swinging manner toward a direction away from the photosensitive drum 205, and the developing roller 109 and the photosensitive drum 205 are transformed into a separated state.

[0170] During this process, the elastic member 126 moves along the third direction D3 along with the first moving member 120. Since the end of the elastic member 126 is blocked by the first guide groove 127b, the elastic member 126 cannot continue to move along the third direction D3. The elastic member 126 is compressed and the elastic force is accumulated.

[0171] When the image forming device receives an instruction and the separation force output member 300 moves from the contact position to the spacing position along the first direction D1, the movement of the first moving member 120 is not affected by the separation force output member 300, the elastic force of the elastic member 126 is released, and the first moving member 120 moves along the third direction D3 toward the fifth side end 106 under the action of the force of the elastic member 126, that is, the first transmission part 123b moves in the third direction D3, thereby driving the second moving member 121 to rotate in the opposite direction through the second abutment part 124b, so that the second transmission part 125b rotates toward a position gradually away from the third abutment part 130b.

[0172] Thus, the holding member returns to its original position with the movement of the first moving member 120 and the rotation of the second moving member 121. The developing cartridge 100 is displaced relative to the third contact portion 130b in the third direction D3, and the developing cartridge 100 gradually moves to a position where the developing roller 109 contacts the photosensitive drum 205.

[0173] In an optional embodiment, a retaining component may also be provided at the second side end 103 of the developing box 100, and a connecting member may be provided between the retaining components on both sides, so that the two ends of the box body 101 move synchronously, and after the developing box 100 moves, the distance between the developing roller 109 and the photosensitive drum 205 in the first direction D1 remains consistent.

[0174] In this embodiment, the second moving member 121 is configured as a rotatable structure to cooperate with the third abutting portion 130b of the drum frame 200, so that the process of the developer cartridge 100 moving by the movement of the holding member is smoother. The rotating structure can reduce the loss of power during the transmission process, ensuring that the movement process of the developer cartridge 100 relative to the photosensitive drum 205 is more stable.

[0175] Embodiment 2

[0176] Reference Figures 22 to 50 As shown, this embodiment mainly describes the differences from Embodiment 1. The difference from Embodiment 1 is that the retaining component only includes the first movable member 120, and the first movable member 120 has a first abutting portion 122c, 122d, 122e and a first transferring portion 123c, 123d, 123e. The first abutting portion 122c, 122d, 122e is used to receive the separation force provided by the separation force output member 300 to drive the first movable member 120 to move along the first preset path. A third abutting portion 130c, 130d, 130e is provided on the box body 101 or the drum frame 200. The third abutting portion 130c, 130d, 130e is located within the range of the first preset path. The first transferring portion 123c, 123d, 123e is used to abut against the third abutting portion 130c, 130d, 130e to drive the box body 101 to move, so that the developing roller 109 is separated from the photosensitive drum 205.

[0177] When each developing cartridge 100 is attached to the mounting cavity 204 of the drum frame 200, the developing roller 109 of each developing cartridge 100 contacts the corresponding photosensitive drum 205. At this time, the separation force output member 300 provided on the image forming apparatus is in a spaced position with the developing cartridge 100 in a spaced state.

[0178] When receiving the instruction of the image forming device, in order to separate the developing roller 109 from the photosensitive drum 205, the driving unit drives the separation force output member 300 to move from the spacing position to the contact position in the first direction D1. As a result, the separation force output member 300 contacts the first moving member 120 and applies an axial pressing force along the first direction D1 to the first moving member 120. Specifically, the separation force output member 300 moves along the first direction D1 to contact the first moving member 120, and the contact position of the separation force output member 300 and the first moving member 120 is located at the first abutting portions 122c, 122d, and 122e. The separation force output member 300 moves along the first direction D1, and the first abutment portions 122c, 122d, and 122e receive the force along the first direction D1, so that the first movable member 120 moves along the first preset path, and the first transmission portions 123c, 123d, and 123e contact the third abutment portion 130a on the first preset path to drive the box body 101 to move in the second direction D2 or the third direction D3 toward a direction away from the photosensitive drum 205, so that the developing roller 109 is separated from the photosensitive drum 205.

[0179] When the image forming device receives an instruction and the separation force output member 300 moves from the contact position to the spacing position along the first direction D1, the first movable member 120 returns along the first preset path under the force of the elastic member 126, and the developing box 100 moves toward the direction close to the photosensitive drum 205 under the action of the separation force output member 300 and the first movable member 120, and the developing roller 109 and the photosensitive drum 205 are transformed into a contact state.

[0180] First Implementation Method

[0181] Reference Figure 22 to Figure 29 As shown, in this embodiment, the first preset path is a rotational movement path of the first moving member 120 with the second preset axis as the center line, and the second preset axis extends along the second direction D2.

[0182] Reference Fig.24As shown, the placement portion extends in the direction from the fifth side end 106 to the sixth side end 107 in the third direction D3, and the placement portion is formed as a recess 145 in the second direction D2. The recess 145 is provided with a first protrusion 146 at one end close to the fifth side end 106 in the third direction D3, and is formed as an opening at one end away from the fifth side end 106 in the third direction D3; the two walls of the recess 145 in the first direction D1 are provided with T-shaped guide grooves 147. In addition, the third abutment portion 130c is provided on the protective cover 108, and the third abutment portion 130c is used to receive the force of the holding component. The third abutment portion 130c is a rack formed into a structure of multiple teeth. The third abutment portion 130c can be integrally formed as a part of the protective cover 108, or can be formed as a component detachably fixedly mounted on the protective cover 108, so that the third abutment portion 130c can be easily replaced when it is damaged. The third abutment portion 130c can also be directly provided on the first side end 102 of the box body 101.

[0183] Reference Fig.23 and Fig.25 The holding component is arranged at the first side end 102 of the developing box 100. Specifically, the holding component is arranged at the placement portion of the protective cover 108, and the holding component can also be directly arranged at the box body 101. The holding component includes a first moving member 120 and a third moving member 148. The first moving member 120 is rotatably connected to the third moving member 148, and the third moving member 148 can move relative to the installation portion.

[0184] The first moving member 120 includes a pivot hole 153, a first abutting portion 122c and a first transmitting portion 123c. The first abutting portion 122c is further away from the second side end 103 than the first transmitting portion 123c, and the first abutting portion 122c is used to receive the force applied by the image forming device; the first transmitting portion 123c is used to cooperate with the third abutting portion 130c on the protective cover 108, and transmit the force to the protective cover 108 and the box body 101. The pivot hole 153 is located at the center of the first moving member 120, the first transmitting portion 123c includes teeth formed on the outer circumference of the first moving member 120, and the first abutting portion 122c is further away from the second side end 103 than the first transmitting portion 123c. In the present embodiment, the first moving member 120 is set as a sector gear, the first abutting portion 122c is set as a plane extending in the second direction D2 and the third direction D3, and the first abutting portion 122c is set at one end of the sector gear that is not a gear. In some embodiments, the first moving member 120 may be configured as a complete gear, and a first abutting portion 122c is disposed on the side of the first moving member 120 along the second direction D2. The first abutting portion 122c may be in a plane, an arc surface, or the like.

[0185] The third movable member 148 includes a guided portion 151 extending along the third direction D3, and the guided portion 151 is installed in the T-shaped guide groove 147 of the seating portion. Therefore, the third movable member 148 is installed in the seating portion, and the third movable member 148 is allowed to move in the third direction D3 relative to the seating portion under the action of the T-shaped guide groove 147.

[0186] The third moving member 148 also includes a second boss 149 and a third boss 150, wherein the second boss 149 is positioned at an end of the third moving member 148 on the second direction D2, and the third boss 150 is positioned at an end of the third moving member 148 near the fifth side end 106 on the third direction D3. The second moving member 120 is rotatably connected with the first moving member 120 by the second boss 149 being arranged in the pivot hole 153 of the first moving member 120. The second boss 149 has a locking portion 152, and the locking portion 152 is used to prevent the first moving member 120 from moving off relative to the third moving member 148 in the second direction D2. The locking portion 152 is elastically deformable, and therefore can pass through the pivot hole 153 of the first moving member 120.

[0187] like Fig.29 as well as Fig.31 As shown, the holding component is installed in the placement portion. Specifically, the guided portion 151 of the third moving member 148 is installed in the placement portion along the T-shaped guide groove 147, and the first moving member 120 is installed on the third moving member 148 through the pivot hole 153. Therefore, the first moving member 120 is located above the placement portion in the second direction D2. The first transfer portion 123c of the first moving member 120 contacts and engages with the third abutment portion 130c on the protective cover 108. At this time, the holding component is in the first state.

[0188] Reference Figure 28 to Figure 31 As shown, when the developing box 100 receives the force of the separation force output member 300 of the image forming device, the first abutting portion 122c receives the force, thereby pushing the first moving member 120 to rotate around the second protrusion 149, and the first transmitting portion 123c pushes the third abutting portion 130c engaged therewith to rotate. Since the third abutting portion 130c is relatively fixed to the protective cover 108, and the protective cover 108 is installed outside the first side end 102 of the box body 101, the box body 101 can move along the third direction D3 toward the sixth side end 107, so as to separate the developing roller 109 from the photosensitive drum 205. At this time, the retaining component is in the second state.

[0189] like Fig.28 as well as Fig.29As shown, when each developing box 100 is attached to the mounting cavity 204 of the drum frame 200, the developing roller 109 of each developing box 100 contacts the corresponding photosensitive drum 205, the separation force output member 300 of the image forming device is in a spaced position with respect to the developing box 100, the retaining component is in a first state, and the first abutment portion 122c extends approximately along the second direction D2.

[0190] like Fig.30 as well as Fig.31 As shown, when receiving the instruction of the image forming device, in order to separate the developing roller 109 from the photosensitive drum 205, the driving unit moves the separation force output member 300 from the spacing position to the contact position in the first direction D1. As a result, the separation force output member 300 contacts the retaining component and applies an axial pressing force along the first direction D1 to the retaining component. Specifically, the separation force output member 300 moves along the first direction D1 to contact the first moving member 120, and the contact position between the separation force output member 300 and the first moving member 120 is located at the first abutting portion 122c.

[0191] The separation force output member 300 moves along the first direction D1, and the first abutting portion 122c receives the force along the first direction D1 and rotates around the second protrusion 149. At this time, the first moving member 120 rotates to a position where the first abutting portion 122c and the extending direction of the placement portion are at an acute angle. The first transmitting portion 123c transmits the force to the third abutting portion 130c engaged therewith by rotation, and the third abutting portion 130c drives the box body 101 to move toward the sixth side end 107 along the third direction D3, so that the developing roller 109 and the photosensitive drum 205 are converted into a separation state. In this process, since the first moving member 120 and the third abutting portion 130a are arranged on the first side end of the box body 101, the first side end 101 moves in a swinging manner around the second side end 103 in a direction away from the photosensitive drum 205.

[0192] In order to change the developing roller 109 and the photosensitive drum 205 from a separated state to a contact state, in this embodiment, the elastic member 126 is abutted between the third movable member 148 and the placement portion. Specifically, the elastic member 126 can be a spring, one end of the elastic member 126 is sleeved on the first protrusion 146 of the placement portion, and the other end is sleeved on the third protrusion 150. The third movable member 148 is located in the first interval 207, and one end of the third movable member 148 abuts against the inner wall surface of the first interval 207, so that the movement of the third movable member 148 in the third direction D3 (from the fifth side end 106 to the sixth side end 107) is limited, and the first movable member 120 is limited by the drum frame 200 in the third direction D3. Therefore, during the separation or contact process between the developing roller 109 and the photosensitive drum 205, the first movable member 120 and the third movable member 148 are not moved in the third direction D3. 3 does not move, the box body 101 moves in the third direction D3 relative to the first movable member 120, so as to realize the separation or contact between the developing roller 109 and the photosensitive drum 205. When the box body 101 moves toward the side away from the photosensitive drum 205, the end of the elastic member 126 is limited by the third movable member 148, and the elastic member 126 is compressed to accumulate elastic force. When the elastic force of the elastic member 126 is released, it pushes the box body 101 back to the initial position, that is, the developing roller 109 and the photosensitive drum 205 are transformed into a contact state.

[0193] Since the seating portion is fixedly connected to the protective cover 108, the seating portion moves along the third direction D3 with the box body 101, that is, the seating portion moves in the third direction D3 relative to the third movable member 148, that is, the elastic member 126 moves along the third direction D3, and since the third movable member 148 is limited by the first interval 207, the elastic member 126 is compressed to accumulate elastic force.

[0194] When the image forming device receives the instruction and the separation force output member 300 moves from the contact position to the spacing position along the first direction D1, the movement of the first moving member 120 is not affected by the separation force output member 300, and the elastic force of the elastic member 126 is released. Under the elastic force of the elastic member 126, the protective cover 108 and the box body 151 move in the opposite direction relative to the third moving member 148 along the third direction D3, and the third abutting portion 130c drives the first moving member 120 to rotate in the opposite direction, so that the box body 101 moves in the third direction D3 toward the fifth side end 106, that is, toward the direction close to the photosensitive drum 205, so that the developing roller 109 and the photosensitive drum 205 are changed into the contact state. At this time, the holding component is changed from the second state to the first state.

[0195] In this embodiment, the transmission of force between the retaining components is achieved by the meshing of the tooth structures, which can ensure the stability of the force transmission process.

[0196] In addition, since the holding member only needs to be provided on one side of the developing cartridge 100 , the structure of the developing cartridge 100 can be simplified, so that the developing cartridge 100 can be miniaturized.

[0197] Second implementation method

[0198] Reference Figures 32 to 44 As shown, in the present embodiment, the first preset path is a linear moving path of the first movable member 120 moving along the first direction D1, the first movable member 120 is limited by the drum frame 200 in the third direction D3, the first movable member 120 includes a first movable component 158, a connecting component 160 and a second movable component 159, the first movable component 158 ​​is located at the first side end 102, the second movable component 159 is located at the second side end 103, the first movable component 158 ​​is connected to the second movable component 159 through the connecting component 160, the first abutment portion 122d is formed on the first movable component 158, the first transfer portion 123d is formed on the first movable component 158 ​​and the second movable component 159, the first transfer portion 123d includes a fourth guide slope 157, the starting end of the fourth guide slope 157 is closer to the second side end 103 and farther away from the sixth side end 107 than the end.

[0199] Reference Fig.34 As shown, the placement portion includes a first placement portion 154, a second placement portion 155 and a third placement portion 156, the first placement portion 154 is close to the first side end 102 of the box body 101, the second placement portion 155 is close to the second side end 103, and the third placement portion 156 is located between the first placement portion 154 and the second placement portion 155. The third placement portion 156 is configured as a groove extending along the first direction D1, and the first through hole 173 and the second through hole 174 at both ends of the third placement portion 156 are formed as holes penetrating in the first direction D1, so as to allow the connecting component 160 to pass through.

[0200] Reference Figure 34 to Figure 37 As shown, the first movable member 158 is limited by the drum frame 200 in the third direction D1, and the first movable member 158 and the second movable member 159 are distributed in sequence along the first direction D1. The first movable member 158 is located at the first side end 102, and the second movable member 159 is located at the second side end 103. The first movable member 158 is located in the first interval 207, and the end of the first movable member 158 abuts against the first interval 207, thereby limiting the movement of the first movable member 158 in the third direction D3 (from the sixth side end 107 to the fifth side end 106). The second movable member 159 is located in the second interval 209, and the end of the second movable member 159 abuts against the second interval 209, thereby limiting the movement of the second movable member 159 in the third direction D3 (from the sixth side end 107 to the fifth side end 106).

[0201] The fifth side end 106 of the box body 101 is provided with two third abutting portions 130d, one of which is located within the moving range of the first movable member 158, and the other third abutting portion 130d is located within the moving range of the second movable member 159. During the movement of the first movable member 120 from the first side end 102 to the second side end 103 along the first direction D1, the fourth guide inclined surfaces 157 on both sides of the box body 101 abut against the third abutting portions 130d. With the continuous movement of the first movable member 120, and because the first movable member 158 is limited by the drum frame 200 in the third direction D1, the fourth guide inclined surfaces 157 apply a component force in the third direction D3 to the third abutting portion 130d, and the third abutting portion 130d transmits this component force to the box body 101, and the box body 101 as a whole moves in the third direction D3 toward a direction away from the photosensitive drum 205, so that the developing roller 109 and the photosensitive drum 205 are transformed into a separated state. In some embodiments, the first seating portion 154 and the third abutting portion 130 d may be formed as a part of the protective cover 108 .

[0202] The first moving member 158 includes a first abutting portion 122d and a first transmitting portion 123d, and the first abutting portion 122d and the first transmitting portion 123d are formed as two ends of the first moving member 158 in the first direction D1. The first abutting portion 122d is used to receive the separation force provided by the separation force output member 300 to drive the first moving member 120 to move along the first preset path. The second moving member 159 includes the first transmitting portion 123d. The first moving member 158 is disposed at the first placement portion 154, and the second moving member 159 is located at the second placement portion 155. The first transfer portion 123d of the first movable component 158 ​​is used to abut against a third abutment portion 130d thereof, the connecting component 160 is used to transfer the force of the first movable component 158 ​​to the second movable component 159, and the first transfer portion 123d of the second movable component 159 is used to abut against another third abutment portion 130d to drive the box body 101 to move, so that the developing roller 109 is separated from the photosensitive drum 205 on both sides in the first direction in the second direction.

[0203] In this embodiment, refer to Fig.35 As shown, the elastic member 126 is a spring, and the spring loop is mounted on the connecting member 160. When the first movable member 120 moves along the first direction D1, the spring is compressed and accumulates elastic force. After the separation force output member 300 releases the resistance to the first movable member 120, the elastic force of the spring is released, so that the first movable member 120 returns to a natural state.

[0204] Reference Fig.39 and Fig.40The third abutting portion 130d includes a surface that gradually moves away from the sixth side end 107 in the direction from the first side end 102 to the second side end 103 in the first direction D1. This surface may be an inclined surface, a curved surface, a stepped surface, or the like.

[0205] In some embodiments, the first abutting portion 122d may be configured as a plane or an arc surface extending in the third direction D3; the first transmitting portion 123d may be configured as a surface gradually away from the sixth side end 107 in the direction from the first side end 102 toward the second side end 103 in the first direction D1, and the first transmitting portion 123d may be formed as an inclined surface, an arc surface, a curved surface, etc. The connecting component 160 may be configured as a cylindrical shape extending in the first direction D1, and in an optional solution, the connecting component 160 may be formed as a plate, a column, etc.

[0206] One end of the second movable member 159 facing the first movable member 158 may also be configured as a hole concave in the first direction D1 for accommodating the end of the connecting member 160 so that the second movable member 159 can stably receive the force of the first transmitting portion 123d.

[0207] The connecting member 160 may be integrally formed as a part of the first movable member 158. The connecting member 160 may also be formed as a columnar member alone, and a receiving portion may be provided on the first movable member 158 so that the connecting member 160 may form a stable connection relationship with the first movable member 158 through the receiving portion.

[0208] Reference Fig.39 as well as Fig.40 As shown, the first transmission portion 123d and the corresponding third abutting portion 130d are in a separated state, and the first transmission portion 123d and the corresponding third abutting portion 130d are in a separated state. At this time, the retaining component is in the first state.

[0209] Reference Figure 36 to Figure 43When the developing box 100 receives the action of the separation force output member 300 of the image forming device, the first abutting portion 122d receives the action of the force, the first moving member 158, the connecting member 160 and the second moving member 159 move toward the second side end 103 in the first direction D1, the first transmission portion 123d of the first moving member 158 contacts the corresponding third abutting portion 130d, and the first transmission portion 123d of the second moving member 159 contacts the corresponding third abutting portion 130d, so that the box body 101 moves in the third direction D3 in the direction away from the photosensitive drum 205, so that the two sides of the developing roller 109 in the first direction are separated from the photosensitive drum 205 in the second direction. At this time, the retaining member is in the second state, and at the same time, the elastic member 126 is compressed and accumulates elastic force. In the process of the box body 101 moving in the third direction D3 in the direction away from the photosensitive drum 205, since the first moving member 158 contacts the inner wall of the first interval 207, the second moving member 159 contacts the inner wall of the second interval 209. At this time, the holding member is subjected to the force in the third direction D3 by the inner wall of the first spacer 207 and the inner wall of the second spacer 209, and thus the developing cartridge 100 moves in the direction away from the photosensitive drum 205 under the force in the third direction D3 of the drum frame 200. At this time, the developing cartridge 100 maintains the developing roller 109 and the photosensitive drum 205 in a separated state under the joint action of the separation force output member 300, the holding member and the drum assembly.

[0210] When the image forming device receives an instruction and the separation force output member 300 moves from the contact position to the spacing position along the first direction D1, the movement of the first movable member 120 is not affected by the separation force output member 300, the elastic force of the elastic member 126 is released, and the first movable member 158 and the second movable member 159 move along the first direction D1 toward a direction away from the second side end 103 under the force of the elastic member 126. At the same time, the first movable member 158 and the second movable member 159 move in a third direction D3 in a direction close to the fifth side end 106, the retaining member changes from the second state to the first state, and the developing roller 109 and the photosensitive drum 205 change from a separated state to a contact state.

[0211] In the present embodiment, the fifth side end 106 is set to a shape that is compatible with the retaining component, which is convenient for the installation of the retaining component and can ensure that the retaining component does not protrude outward compared to the fifth side end 106 of the box body 101, thereby making the developing box 100 easily damaged when impacted by external force; and makes the overall structure of the developing box 100 more regular, which is convenient for subsequent packaging and avoids damage during packaging and transportation.

[0212] In some embodiments, the first movable member 120 may also only include the first movable component 158 ​​, which is movably connected to the box body 101 or the protective cover, and can also achieve the separation and contact of the developing roller 109 and the photosensitive drum 205 .

[0213] The third implementation method

[0214] Reference Figures 44 to 50 As shown, in the present embodiment, the first preset path is a linear moving path of the first movable member 120 moving along the third direction D3, the first movable member 120 is arranged at the first side end 102 in the first direction D1, the first abutment portion 122e and the first transfer portion 123e are sequentially distributed along the third direction D3, the first abutment portion 122e includes a fifth guide slope 161, and the starting end of the fifth guide slope 161 is farther away from the second side end 103 and closer to the sixth side end 107 than the end.

[0215] Reference Fig.44 As shown, the third abutting portion 130e is disposed on the drawer plate 203 between the drum frame 200, close to the first side plate 201 in the first direction D1 and away from the photosensitive drum 205 in the second direction D2. The third abutting portion 130e is formed as an arc surface for supporting the holding component in the second direction D2.

[0216] like Fig.47 As shown, the protective cover 108 is provided with a placement portion on a side away from the first side end 102 in the first direction D1. The placement portion includes an outer placement portion and an inner placement portion. The outer placement portion includes a first guide groove 127e, and the first guide groove 127e includes two bending portions, and the two bending portions are respectively bent from the second direction D2 to the third direction D3 and bent from the third direction D3 to the second direction D2. A guide hole 129e is provided between the two bending portions in the third direction D3, and the guide hole 129e is formed into a structure in which one end close to the developing roller 109 in the second direction D2 is open. In addition, the inner placement portion only includes a connecting hole 162e, and the connecting hole 162e includes a small diameter portion and a large diameter portion with different diameters in the third direction D3.

[0217] like Fig.45 , Fig.46 as well as Fig.48 As shown, the holding component can be arranged on the protective cover 108, and specifically, the holding component is arranged in the placement portion. The holding component includes a first moving member 120, and the first moving member 120 includes a first abutting portion 122e, a first limiting portion 134e, a first connecting portion 163 and a first transmitting portion 123e. The first abutting portion 122e is used to receive the separation force provided by the separation force output member 300 to drive the first moving member 120 to move along the first preset path. The first transmitting portion 123e is used to abut with the third abutting portion 130e to drive the box body 101 to move, so that the developing roller 109 is separated from the photosensitive drum 205.

[0218] The fifth guide inclined surface 161 is located at a side of the first abutting portion 122e close to the fifth side end 106, the first limiting portion 134e is formed as a column extending in the second direction D2, and one end of the first limiting portion 134e in the second direction D2 is fixedly connected to a side of the first abutting portion 122e away from the fifth guide inclined surface 161; the first connecting portion 163 extends along the third direction D3, and one end in the third direction D3 is fixedly connected to the first limiting portion 134e. The first transmitting portion 123e extends along the second direction D2, and the elastic member 126 is sleeved on the outer side of the first connecting portion 163.

[0219] The first limiting portion 134e is used to limit the moving distance of the first moving member 120 in the third direction D3, the first abutting portion 122e is used to receive the force applied by the image forming device, and the first connecting portion 163 is used to transmit the force to the first transmitting portion 123e. The first transmitting portion 123e abuts against the first connecting portion 163 and receives the force of the first moving member 120, and is used to form an abutting relationship with the third abutting portion 130e on the drum frame 200.

[0220] In some embodiments, the fifth guide slope 161 of the first abutment portion 122e is configured as a slope that gradually moves away from the first side end 102 in the direction from the fifth side end 106 toward the sixth side end 107 in the third direction D3; the first limiting portion 134e is configured as a rectangular parallelepiped extending in the second direction D2, and the other end close to the first connection portion 163 in the third direction D3 is configured as a rectangular plane; the first connection portion 163 is configured as a cylinder extending along the third direction D3.

[0221] The first transmission part 123e is formed as a waist-shaped block, and a hole extending along the third direction D3 is provided on one side of the first transmission part 123e close to the first connection part 163, which is used to accommodate the other end of the first connection part 163 away from the first limiting part 134e in the third direction D3, so as to form a connection relationship between the first connection part 163 and the first transmission part 123e. One end of the first transmission part 123e away from the first connection part 163 is formed as an arc surface of the waist-shaped block close to the third side end 104 of the box body 101 in the second direction D2.

[0222] In some optional schemes, the first limiting portion 134e can be set to an arc surface or a curved surface; the first abutment portion 122e can be set to a structure with a protrusion or a depression; the first connecting portion 163 can be set to a rectangular parallelepiped, a prism or other columnar structure; the first transmission portion 123e can be set to an elliptical block, a fan-shaped block or a ball or other block structure with an arc surface, and the end face of the first transmission portion 123e can be set to a plane with an arc surface transition; there are no specific restrictions on this.

[0223] like Fig.45 as well as Fig.46As shown, the holding member is installed in the placement portion, the first moving member 120 is at least partially arranged in the outer placement portion, and the first moving member 120 is also at least partially arranged in the inner placement portion. In other words, the first moving member 120 is at least partially arranged in the first guide groove 127e, and at least a part is also arranged in the communication hole 162e.

[0224] In the present embodiment, the first position limiting portion 134e and the first abutting portion 122e are arranged in the first guide groove 127e, so that the end of the first abutting portion 122e away from the fifth guiding inclined surface 161 is located in the guide hole 129e, and the guide hole 129e guides the movement of the first moving member 120 in the third direction D3. The first connecting portion 163 extends from the outer side placement portion along the third direction D3 to the inner side placement portion, and because the elastic member 126 is sleeved on the outside of the first connecting portion 163, the elastic member 126 also extends from the outer side placement portion along the third direction D3 to the inner side placement portion. Specifically, the part of the sleeved first connecting portion 163 is located at the large diameter portion of the connecting hole 162e, and the rest of the first connecting portion 163 is located at the small diameter portion of the connecting hole 162e, that is to say, the extending length of the connecting hole 162e along the third direction D3 is less than the length of the first connecting portion 163. The two ends of the elastic member 126 are respectively in contact with the first limit portion 134e and the small diameter portion of the communicating hole 162e, and the elastic member 126 can be extended and retracted in the third direction D3 along with the movement of the first moving member 120. The first transmission portion 123e is arranged at a position closer to the sixth side end 107 than the communicating hole 162e in the third direction D3. At this time, the first transmission portion 123e is in a non-contact state with the third abutting portion 130e of the drum frame 200.

[0225] In this way, when the developing box 100 receives the action of the separation force output member 300 of the image forming device, the first abutment portion 122e is used to receive the action of the force, and the first connecting portion 163 drives the first transmission portion 123e to move in the third direction D3, thereby pushing the first movable member 120 to move along the third direction D3 as a whole. Therefore, the first transmission portion 123e gradually approaches the third abutment portion 130e during the movement along the third direction D3 until the first transmission portion 123e interferes with the third abutment portion 130e, that is, the first transmission portion 123e contacts the third abutment portion 130e, and the third abutment portion 130e provides an upward supporting force along the second direction D2 for the first transmission portion 123e, and then, the third abutment portion 130e provides an upward supporting force along the second direction D2 for the developing box 100 through the first transmission portion 123e.

[0226] In an optional embodiment, the connecting hole 162e may only include a small diameter portion, and the elastic member 126 is arranged outside the connecting hole 162e; the first movable member 120 may be integrally formed, or may be separately formed into different components such as the first limiting portion 134e, the first abutment portion 122e and the first connecting portion 163, and the different components are connected by plugging, gluing, etc.; the size of the first movable member 120 in the second direction D2 may also be increased, and the first movable member 120 may be set as a block structure without a bend, and the placement structure on the protective cover 108 may be adaptively adjusted accordingly.

[0227] like Fig.49 as well as Fig.50 As shown, when each developing box 100 is attached to the mounting cavity 204 of the drum frame 200, the developing roller 109 of each developing box 100 contacts the corresponding photosensitive drum 205, the separation force output member 300 of the image forming device is in a spaced position from the developing box 100, the retaining component is in a first state, and the first transmission portion 123e of the retaining component is in a non-contact state with the third abutment portion 130e of the drum frame 200.

[0228] When the image forming device receives the instruction and the separation force output member 300 moves from the spacing position along the first direction D1 to the contact position, the separation force output member 300 contacts the retaining component and applies a pressing force in the first direction D1 to the first moving member 120, that is, the separation force output member 300 contacts the first abutting portion 122e and applies an action force thereto. The fifth guide slope 161 receives the action of the force, and the action force is decomposed into a component force along the third direction D3. Under the action of this component force, the first moving member 120 moves along the third direction D3 in the guide hole 129e, so that the first connecting portion 163 moves along the third direction D3, and the elastic member 126 is compressed by the force in the third direction D3, accumulating elastic force.

[0229] The first transmission part 123e moves along the third direction D3 driven by the first connection part 163, and the first transmission part 123e moves to contact with the third abutting part 130e, and due to interference with the third abutting part 130e, moves relative to the third abutting part 130e in the second direction D2 under the support force of the third abutting part 130e. Until the first limiting part 134e moves to contact the connecting hole 162e in the third direction D3, the movement of the first moving member 120 in the third direction D3 is restricted, and the movement process of the holding component ends. At this time, the holding component is in the second state, and is in contact with the third abutting part 130e and receives the support force from it along the second direction D2.

[0230] Since the first transmission part 123e is arranged on the first movable member 120, and the first movable member 120 is arranged on the box body 101, the supporting force of the third abutting part 130e on the first transmission part 123e in the second direction D2 can be converted and transmitted to the developing box 100, so that the retaining component drives the developing box 100 to move in the second direction D2 relative to the third abutting part 130e.

[0231] Thus, the movement of the developing cartridge 100 in the second direction D2 causes the developing roller 109 to move in the second direction D2 relative to the photosensitive drum 205 , and the developing roller 109 and the photosensitive drum 205 are turned into a separated state.

[0232] During the separation of the developing roller from the photosensitive drum 205 , since the first movable member 120 and the third abutting portion 130 e are disposed at the first side end of the box body 101 , the first side end 101 moves around the second side end 103 in a swinging manner toward a direction away from the photosensitive drum 205 .

[0233] When the image forming device receives the instruction and the separation force output member 300 moves from the contact position to the spacing position along the first direction D1, the movement of the first moving member 120 is not affected by the separation force output member 300, the elastic force of the elastic member 126 is released, and the first moving member 120 moves along the third direction D3 toward the fifth side end 106 under the action of the force of the elastic member 126. In the process of the first transmission part 123e moving relative to the third abutting part 130e along the third direction D3, the relative position of the first transmission part 123e and the third abutting part 130e in the second direction D2 also changes under the action of the gravity of the developing box 100, that is, the first transmission part 123e is displaced relative to the third abutting part 130e, and the first transmission part 123e moves relative to the third abutting part 130e in the second direction D2 toward the third side end 104 close to the box body 101.

[0234] As a result, the retaining component is changed from the second state to the first state, and the developer box 100 no longer receives the supporting force along the second direction D2 after the relative position relationship between the first transfer portion 123e and the third abutment portion 130e changes, and at the same time, under the action of the gravity of the developer box 100, the developer box 100 moves to the position where the developing roller 109 contacts the photosensitive drum 205, that is, the developer box 100 moves to the state where the developer box 100 contacts the photosensitive drum 205 as shown.

[0235] In this embodiment, the relative position relationship between the drum frame 200 and the holding member is changed to realize the transition between the contact state and the separation state of the developing cartridge 100 and the photosensitive drum 205. After the developing cartridge 100 receives the force of the separation force output member 300, the drum frame 200 applies a force to the developing cartridge 100 to realize the movement in the second direction D2, which can ensure that the movement process of the developing cartridge 100 is more stable, and the separation state is also maintained more stably.

[0236] Embodiment 3

[0237] This embodiment is substantially the same as the first embodiment, and differs from the first embodiment in that a pressure assembly is provided at the fourth side end 105 of the box body 101 in the second direction D2, specifically:

[0238] Reference Fig.51 As shown, the pressure assembly includes a first pressure member 164, a first pressure elastic member 165, a second pressure elastic member 166, a first mounting groove 167, and a second mounting groove 168. The first pressure member 164 has a first engaging portion 169 and a second engaging portion 170 in the first direction D1. The first engaging portion 169 is closer to the first side wall of the box body 101 than the second engaging portion 170. The first pressure elastic member 165 is connected to the first engaging portion 169 and the first mounting groove 167, and the second pressure elastic member 166 is connected to the second engaging portion 170 and the second mounting groove 168.

[0239] In some embodiments, the pressure assembly may include only the first pressure elastic member 165, which is disposed near the center line of the first pressure member 164. When the first pressure member 164 moves in the second direction D2 relative to the first mounting groove 167 and the second mounting groove 168, the first pressure elastic member 165 expands and contracts in the second direction D2 as the first pressure member 164 moves.

[0240] After the developing box 100 is installed in the drum frame 200 and installed in the image forming device together with the drum frame 200, the first pressure member 164 abuts against the top wall of the image forming device at one end away from the developing roller 109 in the second direction D2, applying a locking force to the developing box 100 away from the top wall along the second direction D2.

[0241] In the contact state of the image forming apparatus, that is, when the developing roller 109 and the photosensitive drum 205 are in contact, the separation force output member 300 moves in the first direction D1 to exert force on the retaining member, so that the developing cartridge 100 moves in the second direction D2 under the combined action of the separation force output member 300 and the retaining member, so that the developing roller 109 is separated from the photosensitive drum 205. At this time, the pressure component is in a compressed state due to the extrusion force in the second direction D2, that is, at this time, the first pressure elastic member 165 and the second pressure elastic member 166 are in a compressed state.

[0242] In the separated state of the image forming apparatus, that is, when the developing roller 109 and the photosensitive drum 205 are in the separated state, the separating force output member 300 cancels the force applied to the holding member in the first direction D1, and the holding member cancels the force applied to the box body 101 and the protective cover 108 in the second direction D2. At this time, the pressure component is in the second direction D2, and the force of the pressure component applies a thrust in the second direction D2 to the box body 101, so that the developing roller 109 moves toward the photosensitive drum 205, and the developing roller 109 is transformed into a contact state with the photosensitive drum 205.

[0243] In this embodiment, a pressure assembly is provided at the second end of the box body 101, which helps to make the contact state between the developing roller 109 and the photosensitive drum 205 more stable and the positioning more accurate when the developing box 100 changes from a separated state to a contact state.

[0244] Embodiment 4

[0245] This embodiment is substantially the same as the first embodiment, and the difference from the first embodiment is that the box body 101 is provided with a connector 171 at the fourth side end 105 in the second direction D2, specifically:

[0246] Reference Fig.52 as well as Fig.53 As shown, the developing box 100 is provided with a connector 171 (detachably mounted) at the fourth side end 105 in the second direction D2. The support shaft 172 is a shaft substantially parallel to the axial direction of the photosensitive drum 205, and is respectively provided on different developing boxes 100. The connector 171 is a plate-shaped component having a plurality of grooves 175 (engaging parts / connecting parts) open downward. The connector 171 is respectively engaged (engaged / connected) in different grooves 175 by providing the support shaft 172 (engaged parts / connected parts) on each developing box 100.

[0247] After the developer cartridge 100 is mounted on the drum unit, the connector 171 is assembled from the top to the bottom. At this time, the grooves 175 of the connector 171 are respectively mounted in a manner of being engaged with the support shafts 172 of the developer cartridge 100. At this time, an anti-dropping portion may be provided in the grooves 175 so that the connector 171 does not drop from the developer cartridge 100.

[0248] In this embodiment, the connecting body 171 is a parallel connecting rod rotatably supported on the supporting shaft 172 . In an optional embodiment, the connecting body 171 may also be composed of two connecting rods rotatably supported on two supporting shafts 172 .

[0249] In an optional embodiment, the connector 171 may be installed on one developing cartridge 100 , and when all developing cartridges 100 are installed on the drum frame 200 , the connector 171 may be rotated to connect the groove 175 to another developing cartridge 100 .

[0250] In an optional embodiment, the connector 171 can be set to a structure symmetrically arranged in the first direction D1, that is, the connector 171 is respectively arranged at a position of the developer box 100 close to the first side end 102 and close to the second side end 103. In an optional embodiment, the connector 171 can also be arranged outside the first side end 102 or the second side end 103 of the developer box 100.

[0251] In this embodiment, only one developer cartridge 100 needs to be provided with a retaining component. When the image forming device receives an instruction and needs to switch between the contact state and the separation state, the separation force output member 300 applies a force to the retaining component, and the retaining component enables the single developer cartridge 100 to move in the second direction D2 or the third direction D3. Under the action of the connector 171, the developer cartridge 100 drives the other developer cartridges 100 connected to the connector 171 to move together.

[0252] Embodiment 5

[0253] In this embodiment, Fig.54 As shown, compared with the fourth embodiment, in this embodiment, the connecting body 171 is arranged outside the sixth side end 107 of the developing box 100. The connecting body 171 is formed as a columnar structure extending along the third direction D3, and the fixed end of the connecting body in the third direction D3 is connected to the sixth side end 107, and the free end abuts against another developing box 100 adjacent to the third direction D3 to form a connection relationship.

[0254] In an optional embodiment, a receiving portion may be provided on the fifth side end 106 of the developing box 100, and after the developing box 100 is installed in the drum unit, the free end of the connecting body 171 is located in the receiving portion of the adjacent developing box 100 to form a connection relationship.

[0255] In this embodiment, only one developer cartridge 100 needs to be provided with a retaining component. When the image forming device receives an instruction and needs to switch between the contact state and the separation state, the separation force output member 300 applies a force to the retaining component, and the retaining component enables the single developer cartridge 100 to move in the third direction D3. Under the action of the connecting body 171, the developer cartridge 100 drives the other developer cartridges 100 connected to the connecting body 171 to move together.

[0256] Embodiment 6

[0257] In this embodiment, refer to Fig.55 as well as Fig.56As shown, the electrical contact surface 176 is inclined toward the sixth side end 107 in the third direction D3. Specifically, along the second direction D2, the first end of the electrical contact surface 176 is closer to the fourth side end 105 than the second end of the electrical contact surface 176. Along the third direction D3, the first end of the electrical contact surface 176 is closer to the sixth side end 107 than the second end of the electrical contact surface 176.

[0258] When the developing cartridge 100 is mounted on the drum frame 200, the developing roller 109 of the developing cartridge 100 is in contact with the photosensitive drum 205, and the electrical contact surface 176 is electrically connected to the electrical contact 210 extending along the third direction D3 on the second side plate 202. At this time, the contact position between the electrical contact surface 176 and the electrical contact 210 is closer to the end of the electrical contact surface 176 close to the fourth side end 105.

[0259] After the image forming apparatus receives the instruction and applies the force to the developing cartridge 100 through the separation force output member 300, the developing cartridge 100 is transformed into a state where the developing roller 109 is separated from the photosensitive drum 205 by moving relative to the photosensitive drum 205 along the second direction D2 and the third direction D3. When the developing cartridge 100 moves along the second direction D2 and the third direction D3, since the bracket 118 is fixed relative to the box body 101, the storage medium 119 moves along the second direction D3 and the third direction D3 together with the box body 101.

[0260] Specifically, when the developing box 100 moves along the second direction D2 toward the fourth side end 105 and along the third direction D3 toward the sixth side end 107, the contact position between the electrical contact surface 176 and the electrical contact 210 gradually moves toward the end of the electrical contact surface 176 close to the third side end 104 in the second direction D2 as the storage medium 119 moves. Since the electrical contact surface 176 is inclined, during the movement of the storage medium 119, the electrical contact 210 is pressed by the storage medium 119 along the third direction D3 and moves relative to the second side plate 202 along the third direction D3.

[0261] The electrical contact surface 176 is tilted to ensure that when the developer box 100 and the photosensitive drum 205 are switched between the contact state and the separation state, they are in stable contact with the electrical contact 210 to avoid connection interruption.

[0262] Fig.57 This is a schematic diagram of the storage medium structure of the developing box of another embodiment of the sixth embodiment provided by the present application. Fig.57 As shown, in an optional embodiment, in order to ensure that the electrical contact surface 176 is in stable contact with the electrical contact 210 when the image forming device switches between the contact state and the separation state, the electrical contact surface 176 can be set to a U-shaped structure, and the opening of the U-shaped structure is close to the fourth side end 105.

[0263] When the developing box 100 is installed on the drum frame 200, the developing roller 109 of the developing box 100 is in contact with the photosensitive drum 205, and the electrical contact surface 176 is electrically connected to the electrical contact 210 located on the second side plate 202. At this time, the electrical contact 210 extends into the electrical contact surface 176 of the U-shaped structure.

[0264] When the developing box 100 moves along the second direction D2 and the third direction, the electrical contact 210 maintains contact with the side wall of the U-shaped structure without separating from the electrical contact surface 176, thereby ensuring that when the developing box 100 and the photosensitive drum 205 are switched between the contact state and the separation state, the electrical contact 210 is stably contacted to avoid connection interruption.

[0265] The above describes in detail the structure, features and effects of the utility model based on the embodiments shown in the drawings. The above is only a preferred embodiment of the utility model, but the utility model is not limited to the scope of implementation shown in the drawings. Any changes made in accordance with the concept of the utility model, or modifications to equivalent embodiments with equivalent changes, which still do not exceed the spirit covered by the description and the drawings, should be within the protection scope of the utility model.

Claims

1. A developing box, characterized in that: The developing box can be detachably mounted on a drum frame in an image forming device, wherein a mounting cavity is provided on the drum frame, and a photosensitive drum is provided in the mounting cavity. The image forming device includes a separation force output member, and the developing box includes: A box body, the box body having a first side end and a second side end arranged opposite to each other along a first direction, a third side end and a fourth side end arranged opposite to each other along a second direction, and a fifth side end and a sixth side end arranged opposite to each other along a third direction, the box body being installed in the installation cavity along the second direction, and the first direction, the second direction and the third direction intersecting each other; A developing roller, rotatably disposed at a third side end of the box body, and extending along the first direction; A first movable member is arranged at the first side end, and has a first abutment portion and a first transmission portion. The first abutment portion is used to receive the separation force provided by the separation force output member moving along the first direction to drive the first movable member to move along a first preset path. A third abutment portion is provided on the box body or the drum frame, and the first transmission portion is used to abut against the third abutment portion to drive the box body to move, so that the developing roller is separated from the photosensitive drum.

2. The developing cartridge according to claim 1, characterized in that: The developing box also includes a second movable member, which is arranged at the first side end and is located within the first preset path. The second movable member has a second abutting portion and a second transmitting portion, and the second abutting portion is used to abut with the first transmitting portion so that the second movable member moves along the second preset path. The second transmitting portion is used to abut with the third abutting portion to drive the box body to move so that the developing roller is separated from the photosensitive drum.

3. The developing cartridge according to claim 2, characterized in that: The first preset path is a linear moving path of the first moving member moving along the third direction; The second preset path is a linear movement path of the second moving member moving along the second direction, or the second preset path is a rotational movement path of the second moving member with a first preset axis as a center line, and the first preset axis extends along the first direction.

4. The developing cartridge according to claim 3, characterized in that: When the second preset path is a linear moving path of the second moving member moving along the second direction, the first abutting portion and the first transmitting portion are sequentially distributed along the third direction, the first abutting portion includes a first guiding slope, and the starting end of the first guiding slope is farther away from the second side end and closer to the sixth side end than the end end; The second abutting portion and the second transmission portion are distributed sequentially along the second direction. The second abutting portion or the first transmission portion includes a second guide slope. When the second abutting portion includes the second guide slope, the starting end of the second guide slope is farther away from the third side end and closer to the fifth side end than the end. When the first transmission portion includes the second guide slope, the starting end of the second guide slope is closer to the third side end and farther away from the fifth side end than the end.

5. The developing cartridge according to claim 3, characterized in that: When the second preset path is a rotational movement path of the second movable member with the first preset axis as the center line, the first abutment portion and the first transmission portion are distributed sequentially along the third direction, the first abutment portion includes a third guide slope, the starting end of the third guide slope is farther away from the second side end and closer to the sixth side end than the end, the second abutment portion and the second transmission portion are arranged in the circumference of the first preset axis, the first transmission portion includes one of a long hole or a guide column, the second abutment portion includes the other of the long hole or the guide column, the long axis of the long hole extends along the second direction, and the guide column is loosely fitted in the long hole.

6. The developing cartridge according to claim 1, characterized in that: The first preset path is a rotational movement path of the first moving member with the second preset axis as the center line, and the second preset axis extends along the second direction.

7. The developing cartridge according to claim 6, characterized in that: The first movable member is limited by the drum frame in the third direction, the first abutment portion is farther away from the second side end than the first transmission portion, the first transmission portion includes teeth formed on the outer circumference of the first movable member, and the third abutment portion includes a rack formed on the box body, the rack extends along the third direction, and the rack is meshed with the teeth on the outer circumference of the first movable member.

8. The developing cartridge according to claim 1, characterized in that: The first preset path is a linear moving path of the first movable member along the first direction, the first movable member is limited by the drum frame in the third direction, the first movable member includes a first movable component, a connecting component and a second movable component, the first movable component is located at the first side end, the second movable component is located at the second side end, the first movable component is connected to the second movable component through the connecting component, the first abutment portion is formed on the first movable component, the first transmission portion is formed on the first movable component and the second movable component, the first transmission portion includes a fourth guide slope, the starting end of the fourth guide slope is closer to the second side end and farther away from the sixth side end than the end.

9. The developing cartridge according to claim 1, characterized in that: The first preset path is a linear movement path of the first moving part along the third direction, the first abutment portion and the first transmission portion are distributed sequentially along the third direction, the first abutment portion includes a fifth guide slope, and the starting end of the fifth guide slope is farther away from the second side end and closer to the sixth side end than the end.

10. The developing cartridge according to claim 1, characterized in that: The developing box is also provided with an elastic member. When the separation force output member contacts the first abutment portion and provides a separation force, the elastic member accumulates elastic force. When the separation force output member moves away from the first abutment portion and loses contact, the elastic member releases the elastic force, the first movable member returns to the initial position, and the developing roller contacts the photosensitive drum.

11. The developer cartridge according to claim 1, characterized in that: The developing box further comprises a driving part arranged at the first side end, the driving part is used to receive the power output by the image forming device and rotate; The first side end is provided with a protective cover, the protective cover is used to protect the driving part, and the first moving member is installed on the protective cover.

12. The developing cartridge according to claim 11, characterized in that: The first side end moves in a swinging manner toward a direction away from the photosensitive drum.

13. The developing cartridge according to claim 1, characterized in that: The third abutting portion is closer to the fourth side end than the third side end.

14. The developing cartridge according to claim 1, wherein: The third abutting portion is closer to the sixth side end than the axis of the developing roller in the third direction.

15. The developing cartridge according to claim 1, characterized in that: The developing box further comprises a pressure assembly, wherein the pressure assembly is disposed at a fourth side end of the box body, and the pressure assembly is used for applying a force in the second direction to the box body.

16. The developing cartridge according to claim 1, characterized in that: The developing box further comprises a connecting body, which is arranged at a fourth side end of the box body, and is used to connect a plurality of the box bodies so that the connected plurality of box bodies can move synchronously in the second direction or the third direction.

17. The developing cartridge according to claim 1, characterized in that: The developing box also includes a bracket and a storage medium, the bracket is arranged at the second side end of the box body, the storage medium is installed on the bracket, and the storage medium includes an electrical contact surface for contacting an electrical contact in the image forming device, along the second direction, the first end of the electrical contact surface is closer to the fourth side end than the second end of the electrical contact surface, and along the third direction, the first end of the electrical contact surface is closer to the sixth side end than the second end of the electrical contact surface.

18. The developing cartridge according to claim 1, characterized in that: The developing box also includes a bracket and a storage medium, the bracket is arranged at the second side end of the box body, the storage medium is installed on the bracket, and the storage medium includes an electrical contact surface for contacting the electrical contact in the image forming device, and the electrical contact surface is a U-shaped structure.

Images