Developing box

Abstract

The developing box comprises a box body, a transmission assembly, a developing roller and a first conductive piece, the box body is used for storing a developing agent and is provided with a first end and a second end in the first direction, the transmission assembly is located at the first end and is provided with a driving part used for receiving external power, and the developing roller rotates in response to rotation of the driving part; comprising a developing roller shaft extending in the first direction and a developing body arranged on the developing roller shaft and rotating along with the developing roller shaft, the developing roller shaft is insulated from the developing body, and a first conductive part is located at the second end and electrically connected with the developing body and not electrically connected with the developing roller shaft; the first conductive part is used for receiving voltage outside the developing box. According to the developing box disclosed by the utility model, the developing roller shaft in the developing roller does not need to be conductive through the first conductive piece, so that the developing roller shaft does not need to be made of conductive materials, the use of high-cost conductive materials can be reduced or replaced, the manufacturing cost of the developing box is effectively reduced, and the market competitiveness of products is favorably improved.

Description

Technical Field

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

[0002] Image forming devices use electrophotographic imaging to form images on recording materials. These devices include electrophotographic copiers, electrophotographic printers (such as LED printers and laser beam printers), and fax machines. Typically, an image forming device includes a removable developing cartridge, which supplies the device with printing consumables (developer) and works in conjunction with a drum assembly to complete the imaging process.

[0003] The core of traditional developer cartridge design is to charge the developer body by providing electricity to the developer roller shaft, thereby adsorbing the toner to form a visible image. The core of this process lies in the material selection of the developer roller shaft and its conductivity. Specifically, existing developer cartridges generally use conductive materials to make the developer roller shaft to ensure that electricity can be effectively transmitted to the developer body, so that its surface has an opposite charge to that of the toner, thereby firmly adhering to the toner to the developer roller through electrostatic adsorption. However, although this design is technically mature and effective, it has significant cost issues. Conductive materials, especially high-performance conductive materials, are relatively expensive, resulting in high manufacturing costs for developer cartridges.

[0004] In addition, the use of conductive materials may also bring other potential problems. For example, factors such as the corrosion resistance and wear resistance of the conductive materials may affect the service life of the developer roller and increase the maintenance cost of the equipment.

[0005] Therefore, a technical solution to the above problems is needed. Utility Model Content

[0006] In order to solve the technical problems existing in the prior art, the purpose of the present utility model is to provide a developing box to solve the above technical problems.

[0007] In order to achieve the purpose, the utility model adopts the following technical solutions:

[0008] A developing box, comprising:

[0009] The box body is used to store the developer and has a first end and a second end in a first direction;

[0010] a driving portion, located at the first end, for receiving external power;

[0011] a developing roller that rotates in response to rotation of the driving portion and includes a developing roller shaft extending in a first direction and a developing body disposed on the developing roller shaft and rotating along with the developing roller shaft, wherein the developing roller shaft and the developing body are insulated from each other;

[0012] The first conductive member is located at the second end, is electrically connected to the developing body and is not electrically connected to the developing roller shaft, and is used to receive a voltage outside the developing box.

[0013] Preferably, the device further comprises a second conductive member, the second conductive member being electrically connected to the developing body and the first conductive member, and the second conductive member extending between the first end and the second end of the box body.

[0014] Preferably, the device further comprises a storage medium having an electrical contact surface, wherein the electrical contact surface is provided at the first end.

[0015] Preferably, it further comprises a detected member, which is arranged at the second end.

[0016] Preferably, the second end of the box body is provided with a bearing that can rotatably support the developing roller, the first conductive member is supported by the bearing, and the first conductive member is arranged between the bearing and the second end of the box body, and the first conductive member at least partially extends out of the bearing to receive the voltage outside the developing box.

[0017] Preferably, the first conductive member is an electrode arranged on the bearing, and the electrode has a first contact portion, a second contact portion and a third contact portion that are bent to each other, the first contact portion is used to receive the voltage outside the developing box, and the second contact portion abuts and is electrically connected to the second conductive member.

[0018] Preferably, it also includes a powder feeding roller arranged in the box body for conveying developer to the developing roller, the second conductive part is the powder feeding roller, the powder feeding roller includes a powder feeding roller shaft extending along the first direction and a powder feeding body arranged on the powder feeding roller shaft and rotating with the powder feeding roller shaft, the powder feeding body is in contact with and electrically connected to the developing body.

[0019] Preferably, the second conductive member is a powder blade for controlling the thickness of the developer on the developing roller, and the powder blade is in contact with and electrically connected to the developing body.

[0020] Preferably, the second conductive member is a sealing member extending along the first direction, the sealing member is made of conductive material, one end of the sealing member is fixed to the box body and the other end is in contact with the developing body, and the sealing member is used to seal the gap between the developing body and the box body to prevent leakage of developer.

[0021] Preferably, a third conductive member is further included, which is an elastic member provided between the first conductive member and the developing body in the first direction, and the third conductive member abuts against and is electrically connected to the first conductive member and the developing body.

[0022] Preferably, it also includes a conductive gasket that can be sleeved on the developing roller shaft, the conductive gasket is arranged between the elastic member and the developing body, the elastic member abuts against the conductive gasket and is electrically connected to the conductive gasket, and the conductive gasket is electrically connected to the developing body.

[0023] Preferably, the first conductive member is a bearing that rotatably supports the developing roller, the bearing is arranged at the second end of the box body, the bearing is made of conductive material, and the first conductive member abuts against and is electrically connected to the bearing.

[0024] Preferably, the developing roller shaft is made of insulating material, or the surface of the developing roller shaft is covered with an insulating layer.

[0025] Preferably, the powder feeding roller shaft is insulated from the powder feeding body, the first conductive member is electrically connected to the powder feeding body but not to the powder feeding roller shaft, the powder feeding roller shaft is made of insulating material, or the surface of the powder feeding roller shaft is covered with an insulating layer.

[0026] The developing box in the present invention cooperates with the first conductive part and the second conductive part so that when the developing box is installed in the image forming device, the electrical transmission part of the image forming device can be electrically connected to the developing body in the developing roller, so that the developing roller shaft in the developing roller does not need to be conductive, and the developing roller shaft does not need to be made of conductive material, which can reduce or replace the use of high-cost conductive materials and effectively reduce the manufacturing cost of the developing box. This not only helps to improve the market competitiveness of the product, but also brings a more economical and affordable choice to consumers. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0028] Figure 1 The three-dimensional structure of the developing box in the first embodiment of the present invention Figure 1 ;

[0029] Figure 2 The three-dimensional structure of the developing box in the first embodiment of the present invention Figure 2 .

[0030] Figure 3 This is a schematic side structural diagram of the developing cartridge in Example 1 of the present utility model;

[0031] Figure 4 This is a perspective view of the developing cartridge installed in the drum assembly in the first embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the partial structure of the second end of the developing cartridge in the first embodiment of the present utility model;

[0033] Figure 6 This is a schematic diagram of the structure of the connection between the electrode, the intermediate member, the developing roller and the powder feeding roller in the first embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the exploded structure of the electrode, the developing roller, and the powder feeding roller in the first embodiment of the present invention;

[0035] Figure 8 This is a schematic diagram of the exploded structure of the developing cartridge in the second embodiment of the present utility model;

[0036] Figure 9 for Figure 9 Schematic diagram of the enlarged structure of position A in the middle.

[0037] Figure 10 This is a schematic diagram of the exploded structure of the developing cartridge at the second end in the second embodiment of the present invention;

[0038] Figure 11 This is a schematic diagram of the partial structure of the second end of the developing cartridge in the third embodiment of the present utility model;

[0039] Figure 12 This is a schematic diagram of the exploded structure of the second end of the developing cartridge in the third embodiment of the present invention;

[0040] Figure 13 This is a schematic diagram of the structure of the connection between the electrode, the developing roller and the powder feeding roller in the fourth embodiment of the present utility model;

[0041] Figure 14 It is a three-dimensional diagram of the developing cartridge in the fifth embodiment of the present utility model;

[0042] Figure 15 This is a schematic diagram of the exploded structure of the developing cartridge in the fifth embodiment of the present utility model;

[0043] Figure 16 This is a three-dimensional diagram of the first protective cover in the fifth embodiment of the present invention.

[0044] Figure 17 The three-dimensional structure of the rotating part in the fifth embodiment of the present invention Figure 1 ;

[0045] Figure 18 The three-dimensional structure of the rotating part in the fifth embodiment of the present invention Figure 2 ;

[0046] Figure 19 This is a schematic diagram of the partial structure of the second end of the developing cartridge in the fifth embodiment of the present utility model;

[0047] Figure 20This is a three-dimensional diagram of a developing cartridge in a sixth embodiment of the present invention;

[0048] Figure 21 for Figure 21 A schematic diagram of the enlarged structure of position B in the middle;

[0049] Figure 22 This is a schematic structural diagram of the connection between the rocker arm and the magnetic member in the sixth embodiment of the present invention;

[0050] Figure 23 It is a three-dimensional diagram of the developing box in the seventh embodiment of the present utility model.

[0051] Figure 24 This is a perspective view of a developing cartridge installed on a drum assembly in a seventh embodiment of the present invention;

[0052] Figure 25 This is a side structural diagram of the developing cartridge installed on the drum assembly in the seventh embodiment of the present utility model;

[0053] Figure 26 for Figure 25 Schematic diagram of the enlarged structure of the C position in the middle. DETAILED DESCRIPTION

[0054] The present invention is further described in detail below with reference to the accompanying drawings. It is apparent that the embodiments described are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0055] It should be noted that the terms "first," "second," etc. are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0056] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0057] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0058] In the above description, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0059] Example 1

[0060] Figure 1 Schematic diagram of the structure of the developing box in this embodiment.

[0061] like Figures 1 to 7 As shown, a developing cartridge 100 is detachably mounted in an image forming apparatus and used together with a drum assembly 200 in the image forming apparatus to achieve accurate image formation.

[0062] In this specification, to better illustrate the various components of the developer cartridge 100, the left-right direction of the developer cartridge 100 (the length direction of the developer cartridge 100) is configured as a first direction, the front-to-back direction of the developer cartridge 100 (the width direction of the developer cartridge 100) is configured as a second direction, and the up-down direction of the developer cartridge 100 (the width direction of the developer cartridge 100) is configured as a third direction. The first direction, the second direction, and the third direction intersect with each other. In the description of the present utility model, the left-right direction is an embodiment of the first direction, the front-to-back direction is an embodiment of the second direction, and the up-down direction is an embodiment of the third direction. However, the first direction, the second direction, and the third direction are not limited to the left-right direction, the front-to-back direction, and the up-down direction.

[0063] First, if Figure 1 、 Figure 2 and Figure 6As shown, viewed as a whole, the developing box 100 mainly includes a box body 110, a stirring frame, a developing roller 120, a powder feeding roller 130 and a powder discharge knife 140.

[0064] The cartridge body 110 is generally in the shape of an elongated box and contains developer for providing the developer required during the imaging process. The cartridge body 110 has a first end 11 and a second end 12 disposed opposite each other in a first direction. The cartridge body 110 has a third end 13 and a fourth end 14 disposed opposite each other in a second direction. The cartridge body 110 has a fifth end 15 and a sixth end 16 disposed opposite each other in a third direction.

[0065] The stirring frame, the powder feeding roller 130 and the developing roller 120 are all rotatably supported at both ends of the box body 110 in the first direction, and the axes of the stirring frame, the powder feeding roller 130 and the developing roller 120 extend along the first direction of the box body 110.

[0066] The box body 110 has a slot-shaped opening 111, which faces the drum assembly 200 when the developer box 100 is installed in the image forming device. The opening 111 is connected to the inside of the box body 110, and the developing roller 120 is rotatably supported at the opening 111 of the box body 110, and the developing roller 120 is partially exposed to the outside of the box body 110. When the developing roller 120 rotates, it can deliver the developer in the box body 110 and transfer the developer to the photosensitive drum in the drum assembly 200; the powder feeding roller 130 is arranged in the box body 110, and the powder feeding roller 130 is arranged adjacent to the developing roller 120, so that the circumferential surface of the powder feeding roller 130 abuts against the circumference of the developing roller 120. The powder feeding roller 130 is capable of feeding powder (developer) to the developing roller 120. The powder feeding roller 130 is closer to the fourth end 14 of the box body 110 than the developing roller 120. The stirring frame is arranged in the box body 110. The stirring frame is closer to the fourth end 14 of the box body 110 than the powder feeding roller 130. The carbon powder in the box body 110 is stirred by the stirring frame to prevent the carbon powder in the box body 110 from agglomerating. The developing roller 120, the powder feeding roller 130 and the stirring frame can all be driven to rotate. The stirring frame rotates to stir the carbon powder while transporting the carbon powder toward the developing roller 120 and the powder feeding roller 130. The carbon powder is transmitted to the powder feeding roller 130 and is adsorbed by the charged developing roller 120.

[0067] refer to Figure 1 The powder discharge knife 140 is installed on the box body 110. One end of the powder discharge knife 140 is fixedly connected to the box body 110, and the other end is bent toward the developing roller 120 to approach and abut against the developing body 121 of the developing roller 120. The powder discharge knife 140 can be used to control the thickness of the developer on the developing roller 120 to ensure that the thickness of the developer on the developing roller 120 is uniform.

[0068] The developing box 100 further includes a transmission assembly, which is used to receive a driving force to drive the stirring frame, the developing roller 120 and the powder feeding roller 130 to work and transport the developer.

[0069] The transmission assembly is disposed at the first end 11 of the box body 110 and includes a driving portion rotatably mounted on the first end 11 of the box body 110 . The rotation axis of the driving portion is parallel to the first direction. The driving portion is used to receive power output by the image forming device.

[0070] The box body 110 is further provided with a handle 141 . The handle 141 is disposed at the fourth end 14 of the box body 110 . The user can pick up the developing box 100 by holding the handle 141 .

[0071] The box body 110 is also provided with a paper guide 161, which is located at the six ends of the box body 110. The paper guide 161 extends along the first direction and is located between the first end 11 and the second end 12. When the developing box 100 is installed on the drum assembly 200 and the two are installed together on the image forming device, the paper guide 161 is exposed through the placement hole on the drum assembly 200. When the image forming device is in working condition, the paper guide 161 is used to guide the sheet.

[0072] The box body 110 is further provided with a first protective cover 18 and a second protective cover 19 at both ends in the first direction. The first protective cover 18 is detachably fixedly mounted on the first end 11 of the box body 110. The first protective cover 18 at least covers the transmission assembly and is used to protect the transmission assembly. The second protective cover 19 is detachably mounted on the second end 12 of the box body 110.

[0073] The developer box 100 also includes an identification component, which is arranged on the box body 110 and is used to electrically connect to the image forming device when the developer box 100 is installed in the image forming device, and transmit basic information such as the model, print quantity, toner reserve, and service life of the developer box 100 to the image forming device, so as to record the usage information of the developer box 100.

[0074] The identification component includes a bracket 17 and a storage medium 171. The storage medium 171 is detachably mounted on the bracket 17. A buckle is provided on the bracket 17. The bracket 17 is detachably mounted on the first protective cover 18 or the box body 110 through the buckle.

[0075] The storage medium 171 is used to store information related to the developer cartridge 100 and transmit the information related to the developer cartridge 100 to the image forming device. The storage medium 171 includes an electrical contact surface. The electrical contact surface can be located directly on the storage medium 171 to achieve electrical connection with the storage medium 171, or can be electrically connected to the storage medium 171 through the middleware 6. The electrical contact surface is used to directly contact the image forming device to transmit the information in the storage medium 171 to the image forming device.

[0076] The specific structure and operation of the image forming device (not shown) and drum assembly 200 are prior art, and the coordination between the developer cartridge 100, the image forming device, and the drum assembly 200 is prior art and will not be further described here. In this embodiment, only the structure, installation, and use of the electrode 2 in the developer cartridge 100 are described.

[0077] like Figures 5 to 7 As shown, in this embodiment, the developing roller 120 includes a developing body 121 and a developing roller shaft 122, both of which extend in a first direction. The developing body 121 covers at least a portion of the developing roller shaft 122 in the radial direction. The developing body 121 rotates following the developing roller shaft 122. The developing body 121 and the developing roller shaft 122 are coaxially arranged; and the outer surface of the developing body 121 is a circumferential surface. When the developing box 100 is installed on the image forming device, the developing body 121 can also be used to contact the photosensitive drum on the drum assembly 200 and provide developer to the photosensitive drum.

[0078] The developing body 121 is made of a conductive material, preferably conductive rubber, or, in some other embodiments, the developing body 121 may also be made of other conductive materials. The developing roller shaft 122 is generally made of a non-conductive material to reduce costs.

[0079] The powder feed roller 130 includes a powder feed body 131 and a powder feed roller shaft 132, both extending in a first direction. The powder feed body 131 radially covers at least a portion of the powder feed roller shaft 132 and rotates with the powder feed roller shaft 132. The powder feed body 131 and the powder feed roller shaft 132 are coaxially disposed and electrically connected. On the cartridge body 110, the developing body 121 is in close contact with the powder feed body 131, and the powder feed roller 130 transfers developer to the developing roller 120.

[0080] In this embodiment, the developing box 100 further includes a first conductive member and a second conductive member. The first conductive member is electrically connected to the developing body 121 but not to the developing roller shaft 122 . The second conductive member is electrically connected to the developing body 121 and the first conductive member.

[0081] In this embodiment, the first conductive member is an electrode 2, which is used to contact the power supply terminal in the image forming device to receive the electric energy output by the image forming device. After receiving the electric energy output by the image forming device, the electrode 2 transmits the electric energy to the developing roller 120 and the powder feeding roller 130, so that the developing roller 120 and the powder feeding roller 130 are charged to absorb the developer.

[0082] The electrode 2 is arranged on the second end 12 of the box body 110. When the developing box 100 is installed in the image forming device, the electrode 2 abuts and is electrically connected to the electric transmission component of the image forming device, receives the electric energy transmitted by the image forming device, and then transmits the electric energy to the developing roller 120 and the powder feeding roller 130.

[0083] Preferably, the electrode 2 is an iron sheet, which can be used to electrically connect to the image forming device. Alternatively, in some other embodiments, the electrode 2 can also be made of other conductive materials such as conductive resin.

[0084] Preferably, the electrodes 2 and the transmission assembly are respectively arranged at two ends of the box body 110 in the first direction.

[0085] It should be noted that when the electrode 2 is disposed at one end of the box body 110 in the first direction, the end is the conductive end of the developing box 100 , and the other opposite end is the driving end of the developing box 100 .

[0086] The box body 110 is further provided with a bearing 160, which is disposed on the second end 12 of the box body 110. The bearing 160 is used on the box body 110 to support one end of the developing roller 120 and the powder feeding roller 130 in the first direction close to the second end 12. Alternatively, in other embodiments below, the bearing 160 on the box body 110 may support only one of the developing roller 120 and the powder feeding roller 130.

[0087] refer to Figure 7 When the electrode 2 is located at the second end 12 , the electrode 2 is supported by the bearing 160 .

[0088] The bearing 160 includes a first hole 161 , a first support portion 162 and a second support portion 163 . The first hole 161 is a through hole passing through the bearing 160 in the first direction. The first support portion 162 is cylindrical. The second support portion 163 is a protrusion extending in the first direction.

[0089] The electrode 2 includes a first electrical contact portion 21, a second electrical contact portion 22, a third electrical contact portion 23, and a supported hole 24. The first electrical contact portion 21, the second electrical contact portion 22, and the third electrical contact portion 23 are bent relative to each other. In the first direction, the first electrical contact portion 21, the second electrical contact portion 22, and the third electrical contact portion 23 are arranged in sequence. The first electrical contact portion 21 and the second electrical contact portion 22 are arranged opposite each other in the first direction. The third electrical contact portion 23 is located between the first electrical contact portion 21 and the second electrical contact portion 22 to connect the two.

[0090] When the electrode 2 is supported by the bearing 160 , the electrode 2 is located between the second end 12 of the box body 110 and the bearing 160 .

[0091] The shape of the first electrical contact portion 21 matches the shape of the first hole 161 of the bearing 160. When the electrode 2 is installed, the first electrical contact portion 21 of the electrode 2 at least partially extends into the first hole 161 of the bearing 160, so that the first electrical contact portion 21 of the electrode 2 is at least partially exposed to the outside through the first hole 161 of the bearing 160. For example, the leftmost end of the electrode 2 in the first direction is a contact surface. The electrode 2 contacts the power supply terminal of the image forming device through the contact surface on the first electrical contact portion 21 to receive electrical energy.

[0092] The second conductive member is the powder feed roller 130. When the electrode 2 is mounted on the bearing 160, the second electrical contact portion 22 abuts against the powder feed roller 130, transmitting electrical energy to the powder feed roller 130. When the powder feed roller 130 contacts the developing roller 120, the electrical energy can be transferred to the developing roller 120. Specifically, in this embodiment, the second electrical contact portion 22 is annular, with a through hole in the center for the powder feed roller shaft 132 to pass through. A spring 221 is provided on the side of the through hole. During installation, the powder feed roller shaft 132 passes through the through hole, and the spring 22 abuts against the powder feed roller shaft 132, allowing the second electrical contact portion 22 to be sleeved on the powder feed roller shaft 132 and maintain stable contact with the powder feed roller shaft 132. Furthermore, when the powder feed body 131 contacts the developing body 121, electrical energy can be transferred to the developing body 121.

[0093] The supported hole 24 is arranged on the second electrical contact portion 22 and is adjacent to the through hole. When the electrode 2 is installed on the bearing 160, the supported hole 24 is inserted by the second supporting portion 163 on the bearing 160, so that the electrode 2 is clamped on the bearing 160 and further connected to the bearing 160, so that the installation connection between the electrode 2 and the bearing 160 is stable, and the connection between the electrode 2 and the developing roller 120 and the powder feeding roller 130 is stable.

[0094] Preferably, the first electrical contact portion 21 , the second electrical contact portion 22 , the third electrical contact portion 23 and the supported hole 24 are an integrally formed structure.

[0095] The third conductive member is an elastic member provided between the first conductive member and the developing body 121 in the first direction. The third conductive member abuts against and is electrically connected to the first conductive member and the developing body.

[0096] Preferably, the elastic member is installed at the second end 12 of the box body 110 and is located between the developing roller 120 and the bearing 160 to achieve electrical connection between the electrode 2 and the developing roller 120.

[0097] The elastic member is made of a conductive material and includes a fourth contact portion 61 for contacting the developing roller 120 and a fifth contact portion 62 for contacting the electrode 2. Specifically, in this embodiment, the elastic member is an elastic steel wire 6, and the fourth electrical contact portion is formed by multiple windings. The fourth contact portion 61 is configured to contact the side end of the developing body 121. Furthermore, while the fourth electrical contact portion contacts the developing body 121, it also fits over the first support portion 162 of the bearing 160, thereby supporting the elastic member. The fifth contact portion 62 is an extension of one end of the elastic steel wire 6. It contacts the third electrical contact portion 23 of the electrode 2, enabling the electrode 2 to transfer electrical energy received from the image forming device to the elastic member, which then transfers the electrical energy to the developing body 121.

[0098] Therefore, in this embodiment, the developing body 121 receives the electric energy transmitted by the powder feeding roller 130 and the elastic member, so that the electric energy received by the developing body 121 is more sufficient and stable, ensuring that the developing body 121 can stably absorb the developer.

[0099] It is understandable that in some other embodiments, the second conductive member may not be provided, and only the first conductive member may be provided. When the first conductive member is installed on the developing roller 120 , the first conductive member is in direct contact with the developing body 121 to supply power to the developing roller 120 .

[0100] Preferably, the bearing 160 is closer to the developing roller 120 than the second cover 19 in the second direction.

[0101] Preferably, the developing body 121 can be made of insulating rubber. A thin film conductive layer is provided on the surface of the developing body 121. The conductive layer is electrically connected to the electrode 2. The conductive layer receives electrical energy transmitted by the powder feeding roller 130 or the elastic member, which can reduce manufacturing costs.

[0102] The powder feeding roller shaft 132 may also be covered with an insulating layer so that the powder feeding roller shaft 132 is insulated from the powder feeding body 131 , and the first conductive member is in contact with and electrically connected to the powder feeding body 131 , thereby directly supplying power to the powder feeding body 131 .

[0103] In some embodiments, the second conductive member may also be a powder knife 140 , which is made entirely of metal and electrically connected to the first conductive member, so that voltage can be applied to the developing body 121 through the second conductive member.

[0104] Example 2

[0105] like Figures 8 to 10 As shown, another developing box 100 is provided in this embodiment. The difference between this embodiment and the first embodiment is that: in this embodiment, the structures of the first conductive member and the third conductive member are different from those in the first embodiment.

[0106] refer to Figure 8 In this embodiment, the first conductive member is a bearing 160 for supporting the developing roller 120 and the powder feeding roller 130. The bearing 160 is made of a conductive material and is used to rotatably support the developing roller 120 and the powder feeding roller 130 at one end of the second end 12.

[0107] The bearing 160 includes a first contact portion 164, a second contact portion 165, and a third contact portion. When the bearing 160 is mounted on the cartridge body 110, the first contact portion 164 is located on a side of the bearing 160 that is away from the second end 12 of the cartridge body 110 in the first direction, and the second contact portion 165 is located on a side of the bearing 160 that is closer to the second end 12. When the developer cartridge 100 is mounted on an image forming device, the first contact portion 164 is configured to contact an electrical transmission element of the image forming device to receive a voltage. The second contact portion 165 is mounted on the cartridge body 110 and electrically connected to the developer roller 120 for transmitting a voltage to the developer roller 120. The third contact portion contacts the powder feed roller 130 to transmit a voltage to the powder feed roller 130.

[0108] In this embodiment, the developing roller shaft 122 is made of insulating material and is non-conductive. When the bearing 160 is installed at the second end 12 of the box body 110, the second contact portion 165 is electrically connected to the developing body 121 through the third conductive member.

[0109] In this embodiment, the third conductive member is an elastic member disposed between the first conductive member and the developing body 121 in the first direction. The elastic member is preferably a conductive spring 71 , which abuts against and is electrically connected to the first conductive member and the developing body 121 .

[0110] Furthermore, it also includes a conductive gasket 72 that can be sleeved on the developing roller shaft 122. The conductive gasket 72 is arranged between the conductive spring 71 and the developing body. The conductive spring 71 abuts against the conductive gasket 72 and is electrically connected to the conductive gasket. The conductive gasket 72 is electrically connected to the developing body.

[0111] Specifically, both the conductive spring 71 and the conductive gasket 72 can be sleeved on the end portion of the developing roller 120 near the second end 12 of the housing 110. When the bearing 160 is mounted on the housing 110, one end of the conductive spring 71 contacts the second contact portion 165 to receive the voltage transmitted to the bearing 160 by the image forming device, and the other end contacts the conductive gasket 72 to transmit the voltage to the conductive gasket 72. The conductive gasket 72 is sleeved on the developing roller shaft 122 and contacts the developing body 121 of the developing roller 120, so that the developing body 121 is charged, thereby allowing the developing body 121 to absorb the developer.

[0112] It is understandable that in other embodiments, the conductive gasket 72 may not be provided, and only an elastic member may be provided. When the elastic member is installed on the developing roller 120 , the elastic member is in direct contact with the developing body 121 to supply power to the developing roller 120 .

[0113] It is understandable that in other embodiments, the developing roller shaft 122 may also be made of conductive material. In this case, an insulating portion is provided between the developing body 121 and the developing roller shaft 122 to prevent the developing roller shaft 122 from transmitting voltage to the developing body 121 .

[0114] The third contact portion is further away from the developing roller 120 than the second contact portion 165 in the second direction, and is electrically connected to the powder feeding body 131 when mounted on the bearing 160. For example, the third contact portion is a protrusion of the bearing 160 extending in the second direction.

[0115] It is understandable that in other embodiments, the second contact portion 165 may be extended to the first end 11 , and a fourth conductive member and a fifth conductive member may be added to transmit voltage to the end of the developing body 121 located at the first end 11 .

[0116] It is understandable that, in other embodiments, the powder discharge knife 140 of the developer box 100 may also be made of an insulating material, and the powder discharge knife 140 is in contact with the developing body 121 of the developing roller 120 to prevent leakage of the developer.

[0117] In this embodiment, the other structures of the developer box 100 are consistent with those in the first embodiment and will not be described here.

[0118] Example 3

[0119] like Figures 11 to 12 As shown, this embodiment provides another developing box 100 . The difference between this embodiment and the first embodiment is that in this embodiment, the second conductive member is a sealing member 133 .

[0120] like Figure 11 and Figure 12 As shown, in this embodiment, the first conductive member is an electrode 2, which is preferably a bendable steel sheet. The electrode 2 is bent multiple times to form a first electrical contact portion 21, a second electrical contact portion 22 and a third electrical contact portion 23. The electrode 2 is supported by a bearing 160 that supports the developing roller 120 and the powder feeding roller 130, and the bearing 160 is made of insulating material.

[0121] Among them, the difference between the electrode 2 and the implementation case 1 is that: in the first direction, the first electrical contact portion 21, the third electrical contact portion 23 and the second electrical contact portion 22 are arranged in sequence, and in the first direction, the extended position of the second electrical contact portion 22 is farther than the extended position of the third electrical contact portion 23. When the electrode 2 is installed at the second end 12 of the box body 110, the second electrical contact portion 22 can contact the sealing member 133.

[0122] When the electrode 2 is mounted on the second end 12 of the box body 110 , the first electrical contact portion 21 contacts the electrical output element of the image forming device to receive voltage, and the second electrical contact portion 22 contacts the powder feeding roller 130 to charge the powder feeding roller 130 .

[0123] Moreover, the seal 133 is made of a conductive material, preferably a conductive resin. One end of the seal 133 is fixed to the box body and the other end is in contact with the developing body 121, so that the developing body 121 is charged. The seal is used to seal the gap between the developing body 121 and the box body 110 to prevent the developer from leaking.

[0124] In this embodiment, the other structures of the developer box 100 are consistent with those in the first embodiment and will not be described here.

[0125] Example 4

[0126] like Figure 13 As shown, another developing box 100 is provided in this embodiment. The difference between this embodiment and the first and third embodiments is that in this embodiment, the second conductive member is a powder feeding roller 130 .

[0127] like Figure 13 As shown in the figure and the figure, the first conductive member is the electrode 2, the powder knife 140 is not conductive, and no third conductive member is provided. It is only electrically connected to the powder feeding roller 130 through the electrode 2, and then electrically connected to the developing roller 120 through the powder feeding roller 130, so that the developing roller 120 is charged.

[0128] In this embodiment, the electrode 2 is substantially the same as that in the first embodiment, and is preferably a bendable steel sheet. The electrode 2 is bent multiple times to form a first electrical contact portion 21, a second electrical contact portion 22, and a third electrical contact portion 23. The electrode 2 is supported by a bearing 160 that supports the developing roller 120 and the powder feeding roller 130, and the bearing 160 is made of insulating material.

[0129] The first electrical contact portion 21 contacts the electrical output element of the image forming device to receive a voltage, and the third electrical contact portion 23 contacts the powder feed roller 130 to charge the powder feed roller 130. Simultaneously, when the powder feed body 131 contacts the developing body 121, electrical energy can be transferred to the developing body 121, thereby charging the developing body 121.

[0130] In this embodiment, the powder feeding body 131 is preferably a conductive sponge, and the powder feeding roller shaft 132 is preferably a conductive steel shaft.

[0131] In this embodiment, the other structures of the developer box 100 are consistent with those in the first embodiment and will not be described here.

[0132] Example 5

[0133] like Figures 14 to 19As shown, another developing box 100 is provided in this embodiment. The difference between this embodiment and embodiment one is that: in this embodiment, a detection member for detecting the developing box 100 is provided in the image forming device, and a detected component is provided on the developing box 100. When the developing box 100 is installed in the image forming device, the detection member is triggered by the detected component of the developing box 100 and moves, so that the image forming device recognizes the developing box 100.

[0134] like Figure 15 and Figure 16 As shown, the first protective cover 18 is detachably fixed to the first end 11 of the box body 110 . The first protective cover 18 includes a trigger portion 186 . When the first protective cover 18 is installed in the box body 110 , the trigger portion 186 faces the first end 11 of the box body 110 .

[0135] The trigger portion 186 includes a first trigger portion 1861, a second trigger portion 1862, and a third trigger portion 1863, spaced circumferentially. Each of the three trigger portions 1861 and 1862 is an arcuate protrusion extending in a first direction toward the first end 11 of the case 110 and located on the circumference of the same circle. The central angle corresponding to the first trigger portion 1861 is greater than the central angles corresponding to the second and third trigger portions 1862 and 1863. In other embodiments, the central angles corresponding to the first, second, and third trigger portions 1861, 1862, and 1863 may be the same. Each of the first, second, and third trigger portions 1861, 1862, and 1863 is provided with an inclined surface inclined relative to the first direction, and the inclined surfaces have different angles. The inclined surface on the first trigger portion 1861 has a smaller angle than the inclined surfaces on the second and third trigger portions 1862 and 1863.

[0136] The detected component includes a rotating member 3 and a rocker arm 5. The rotating member 3 receives power transmitted by the transmission component to rotate, and the rotating member 3 drives the rocker arm 5 to move, cooperating with the detection component of the image forming device, so that the image forming device can identify the developing box 100.

[0137] like Figure 15 、 Figure 17 and Figure 18 As shown, the rotating member 3 is arranged at the first end 11 of the box body 110, between the first protective cover 18 and the first end 11 of the box body 110, and the rotating member 3 is rotatably supported at the first end 11 of the box body 110 and can move in the first direction. It can cooperate with the triggering part 186 of the first protective cover 18 to move, act on the rocker arm 5, and make it swing, and be detected by the detection component in the image forming device.

[0138] The rotating member 3 includes an engaging portion 31 , an abutting portion 33 , a mounting hole 36 , a first abutting block 37 and an accelerating portion 39 .

[0139] When the rotating member 3 is installed between the first protective cover 18 and the first end 11 of the box body 110, the meshing portion 31 is used to mesh with the stirring gear 47 to receive power and rotate. Specifically, in this embodiment, the meshing portion 31 includes a toothed portion 311 and a toothless portion 312. The toothed portion 311 and the toothless portion 312 are arranged around the rotation direction of the rotating member 3 and together form a circle. The toothed portion 311 is provided with a plurality of teeth along the rotation direction of the rotating member 3. That is, when the toothed portion 311 is opposite to the stirring gear 47, the rotating member 3 meshes with the stirring gear 47 and rotates with the stirring gear 47. When the toothless portion 312 is opposite to the stirring gear 47, the rotating member 3 disengages from the stirring gear 47 and does not rotate with the stirring gear 47.

[0140] The abutment portion 33 is the end surface of the rotating part 3 facing the first end 11 in the first direction, and the acceleration portion 39 is arranged on the abutment portion 33. The acceleration portion 39 is a concave surface of the abutment portion 33 that is recessed in the direction away from the first end 11. The acceleration portion 39 is an arc surface that extends in the direction away from the first end 11 in the rotation direction of the rotating part 3 or an arc surface that extends in the direction close to the first end 11 in the rotation direction of the rotating part 3.

[0141] The mounting hole 36 is a circular hole that passes through the rotating member 3 in the first direction. The mounting hole 36 can be mounted on a support column provided on the first protective cover 18 or the box body 110, so that the rotating member 3 can be rotatably supported and can move in the first direction.

[0142] In the radial direction, the first abutting block 37 is located inside the engaging portion 31. The first abutting block 37 protrudes radially and extends in the first direction. The first abutting block 37 is used to interact with the triggering portion 186 on the first protective cover 18. When the first abutting block 37 abuts against the first triggering portion 1861, the second triggering portion 1862, and the third triggering portion 1863, the rotating member 3 has a first position in the first direction. When the first abutting block 37 is located at a gap between the plurality of triggering portions 186, the rotating member 3 has a second position in the first direction. In the first direction, the first position is closer to the first end 11 than the second position.

[0143] An observation hole 185 may also be provided on the protective cover, through which the rotating member 3 can be observed to see whether it has been rotated or installed.

[0144] like Figure 15 and Figure 19 As shown, the rocker 5 includes a force-bearing end 51 , a detected end 52 , a positioning hole 53 , a guided protrusion 54 , a first arm 55 and a second arm 56 .

[0145] The swing arm 5 is rotatably mounted on the fifth end 15 of the box body 110 through the positioning hole 53. For example, a support column is provided at the fifth end 15 of the box body 110 to cooperate with the positioning hole 53 for installation.

[0146] The force-bearing end 51 is located at the right end of the swing rod 5 in the first direction. The force-bearing end 51 is used to be abutted by the rotating member 3 so that the swing rod 5 swings with the positioning hole 53 as the swing point.

[0147] Preferably, the swing direction of the swing rod 5 intersects the first direction. For example, in this embodiment, the fifth end 15 on the box body 110 is parallel to the third direction.

[0148] The detected end 52 is located at the left end of the rocker arm 5 in the first direction. The detected end 52 can pass through the second protective cover 19 and be at least partially exposed to the outside. The detected end 52 is used to trigger the detection component in the image forming device so that the developing box 100 is detected by the image forming device.

[0149] Specifically, in this embodiment, when the rotating member 3 is in the first position, it acts on the force-bearing end 511 of the rocker arm 5, so that the detected end 52 of the rocker arm 5 is in the detection position. When the rotating member 3 is in the second position, the detected end 52 of the fifth end 15 on the box body 110 can be in the non-detection position. The detected end 52 swings between the detection position and the detected position. In the second direction, the detection position is closer to the developing roller 120 than the non-detection position.

[0150] Preferably, the force-bearing end 51 includes an inclined surface extending rearward in the second direction and rightward in the first direction, and the inclined surface abuts against the abutting portion 33 of the rotating member 3 .

[0151] The guided protrusion 54 is a protrusion that protrudes in the third direction and is closer to the force-bearing end 51 than to the detected end 52. The fifth end 15 of the box body 110 serves as an upper cover for the box body 110. The upper cover is further provided with a guide groove 1523. When the pendulum 5 is mounted on the fifth end 15 of the box body 110, the guided protrusion 54 is located within the guide groove 1523. When the pendulum 5 swings, the guided protrusion 54 moves within the guide groove 1523, thereby ensuring the movement trajectory of the pendulum 5 and allowing the detected end 52 to smoothly move to the detection position.

[0152] Preferably, the guide groove 1523 is a curved groove recessed in the third direction and extends away from the developing roller 120 in the second direction. The guide groove 1523 is closer to the first end 11 than the second end 12 in the first direction.

[0153] The first arm 55 is located between the positioning hole 53 and the force-bearing end 51 in the first direction, and the second arm 56 is located between the positioning hole 53 and the detected end 52 in the first direction. That is, the lengths of the first arm 55 and the second arm 56 depend on whether the positioning hole 53 is closer to the first end 11 or the second end 12 in the first direction. When the positioning hole 53 and the positioning post are closer to the first end 11, that is, the length of the first arm 55 is shorter, the angle between the inclined surface of the force-bearing end 51 and the first direction is smaller; when the positioning hole 53 and the positioning post are closer to the second end 12, that is, the length of the second arm 56 is shorter, the angle between the inclined surface of the force-bearing end 51 and the first direction is larger.

[0154] It is understandable that this embodiment does not limit the positions of the positioning hole 53 and the positioning column and the inclined surface of the force-bearing end 51 .

[0155] It is understandable that, in some embodiments, a positioning hole 53 may be provided on the upper cover, and a positioning column matching the positioning hole 53 may be provided on the rocker arm 5 so that the rocker arm 5 can be rotatably mounted on the fifth end 15 of the box body 110 .

[0156] It is understandable that in other embodiments, the guided protrusion 54 is closer to the detected end 52 relative to the force-bearing end 51 , and the guided protrusion 54 only needs to be located in the guide groove 1523 .

[0157] The first protective cover 18 also includes a driving protection portion 183 for protecting the driving portion. The driving protection portion 183 at least covers a portion of the driving portion. A through hole is provided on the driving protection portion 183 that penetrates the driving protection portion 183 along the first direction. The through hole is used to allow the power receiving portion 40 to leak out, so that the power receiving portion 40 can receive power output from the image forming device.

[0158] The developing box 100 further includes a first restoring member 155 and a second restoring member 156 for restoring the rocker arm 5 .

[0159] A second connecting column 521 extending in the first direction is also provided on the detected end 52. The second protective cover 19 is located at the second end 12 of the box body 110. The second protective cover 19 includes a first connecting column 191. The first connecting column 191 protrudes in the first direction. In the second direction, the first connecting column 191 and the second connecting column 521 are arranged one after the other.

[0160] Preferably, in this embodiment, the first return member 155 is preferably a tension spring, one end of the first return member 155 is connected to the first connecting column 191, and the other end is connected to the second connecting column 521. When the detected end 52 is in the detection position, the first return member 155 is in a stretched state and has elastic force. The first return member 155 is used to apply elastic force to the detected end 52 so that the detected end 52 moves from the detection position to the non-detection position.

[0161] Alternatively, in another embodiment, the first restoring member 155 may have one end connected to the box body 110 and the other end connected to the detected end 52 , or the other end connected to the second arm 56 of the rocker 5 .

[0162] Preferably, in this embodiment, the second restoring member 156 is preferably a compression spring, located between the rotating member 3 and the box body 110, and the second restoring member 156 can be compressed and extended in the first direction, and the second restoring member 156 is used to drive the rotating member 3 to move from the first position to the second position. That is, the second restoring member 156 is the second restoring member 156.

[0163] The developer cartridge 100 further includes a cover plate 190. In the third direction, the cover plate 190 is located above the upper cover. The cover plate 190 is detachably mounted on the upper cover and covers at least a portion of the swing arm 5. The cover plate 190 protects the swing arm 5. For example, a snap-fit structure is provided between the cover plate 190 and the upper cover to allow the cover plate 190 and the upper cover to be detachable.

[0164] Preferably, the second protective cover 19 at least covers the detected component, and the second protective cover 19 has a protective effect on the detected component.

[0165] The developing cartridge 100 provided in this embodiment is installed on an image forming apparatus and is used as follows:

[0166] When the developing cartridge 100 is installed in the image forming apparatus, and the developing cartridge 100 is not operating, that is, when the power receiving portion 40 is not receiving the power output by the image forming apparatus, the rotating member 3 is engaged with the stirring gear 47, the first abutting block 37 of the rotating member 3 abuts the first triggering portion 1861 and is located in the first position, the rotating member 3 is in abutment with the swing arm 5, and the detected end 52 is in the detection position and in contact with the detection member in the image forming apparatus, which is the first triggering. The first restoring member 155 is in a stretched state by the detected end 52, and the second restoring member 156 is in a compressed state by the abutment of the rotating member 3.

[0167] When the power receiving part 40 receives the power output by the image forming device and starts to rotate and drives the entire transmission assembly to rotate, the rotating part 3 starts to rotate following the stirring gear 47. In the process of the first abutment block 37 abutting against the first triggering part 1861, the rotating part 3 is always in the first position in the first direction, and the detected end 52 is in the detection position.

[0168] As the rotating member 3 continues to rotate, the first abutment block 37 disengages from the first trigger portion 1861. The elastic action of the second reset member causes the rotating member 3 to move rightward in the first direction. The first abutment block 37 is located between the first trigger portion 1861 and the second trigger portion 1862, and the rotating member 3 is in the second position. The first reset member 155 drives the swing arm 5 to swing, causing the force-bearing end 51 to swing toward the developing roller 120, while the detected end 52 swings away from the developing roller 120 from the detecting position to the non-detecting position.

[0169] The rotating member 3 continues to rotate, and the first abutment block 37 abuts the inclined surface of the second triggering portion 1862, causing the rotating member 3 to move leftward in the first direction to the first position. The rotating member 3 drives the swing arm 5 to swing, causing the force-bearing end 51 to swing away from the developing roller 120, and the detected end 52 to move from the non-detecting position to the detecting position toward the developing roller 120, triggering the detecting member for the second time. The first restoring member 155 and the second restoring member 156 accumulate elastic force.

[0170] As the rotating member 3 continues to rotate, the first abutting block 37 disengages from the second triggering portion 1862. The rotating member 3 is elastically acted upon by the second restoring member 156 and moves rightward in the first direction to the second position, with the first abutting block 37 located between the second triggering portion 1862 and the third triggering portion 1863. The first restoring member 155 drives the swinging rod 5 to swing, causing the detected end 52 to swing from the detecting position to the non-detecting position.

[0171] The rotating member 3 continues to rotate, and the first abutment block 37 abuts the inclined surface of the third triggering portion 1863, causing the rotating member 3 to move leftward in the first direction to the first position. The rotating member 3 drives the rocker 5 to swing, and the detected end 52 moves from the non-detecting position to the detecting position, triggering the detecting member. This is the third triggering. The first restoring member 155 and the second restoring member 156 accumulate elastic force.

[0172] As the rotating member 3 continues to rotate, the first abutting block 37 disengages from the abutment with the third triggering portion 1863. The rotating member 3 is elastically acted upon by the second restoring member 156 and moves rightward in the first direction to the second position. The first abutting block 37 is located between the third triggering portion 1863 and the first triggering portion 1861. The first restoring member 155 drives the swinging rod 5 to swing, causing the detected end 52 to swing from the detecting position to the non-detecting position.

[0173] The rotating member 3 continues to rotate, and the first abutment block 37 abuts against the inclined surface of the first trigger portion 1861, causing the rotating member 3 to move leftward in the first direction to the first position. Since the inclined surface of the third trigger portion 1863 is inclined at a smaller angle relative to the first direction, the rotating member 3 moves faster in the first direction this time. At the same time, the acceleration portion 39 of the rotating member 3 abuts against the force-bearing end 51 of the rocker arm 5, causing the rocker arm 5 to swing at a faster speed, and the detected end 52 swings from the non-detection position to the detection position at a faster speed and triggers the detection member, which is the fourth trigger, that is, the speed of the fourth trigger is greater than the second trigger and the third trigger.

[0174] The toothless portion 312 of the rotating member 3 is opposite to the stirring gear 47, and the rotating member 3 no longer rotates with the stirring gear 47. The rotating member 3 is kept in contact with the swing lever 5, and the detected end 52 is in contact with the detecting member at the detecting position, and the image forming apparatus completes the recognition of the developing cartridge 100.

[0175] In this embodiment, there is no limit on the number of triggers, which can be set according to actual needs.

[0176] In this embodiment, the other structures of the developer box 100 are consistent with those in the first embodiment and will not be described here.

[0177] Example 6

[0178] like Figures 20 to 22 As shown, another developing box 100 is provided in this embodiment. The difference between this embodiment and the fifth embodiment is that: in this embodiment, the structure of the first restoring member 155 is different from that in the fifth embodiment.

[0179] The first restoring member 155 is a magnetic member. Preferably, the first restoring member 155 includes a first magnetic member 1551 and a second magnetic member 1552 .

[0180] Specifically, in this embodiment, a first mounting portion for mounting the first magnetic component 1551 is provided at the rear end of the guide groove 1523, and a second mounting portion for mounting the second magnetic component 1552 is provided on the guided protrusion 54 of the rocker arm 5. Both the first mounting portion and the second mounting portion are non-fully enclosed grooves. The first magnetic component 1551 is mounted on the first mounting portion, and the second magnetic component 1552 is mounted on the second mounting portion. The first magnetic component 1551 and the second magnetic component 1552 are at least partially exposed from the first mounting portion and the second mounting portion, respectively.

[0181] The first magnetic part 1551 and the second magnetic part 1552 are both magnets, and the second magnetic part 1552 swings with the rocker arm 5. The same magnetic poles of the first magnetic part 1551 and the second magnetic part 1552 are relatively arranged in the swing direction of the rocker arm 5. The N magnetic pole of the first magnetic part 1551 and the N magnetic pole of the second magnetic part 1552 can be relatively arranged, and in the first direction, the first magnetic part 1551 is farther away from the developing roller 120 than the second magnetic part 1552.

[0182] In this embodiment, the working process of the first restoring member 155 is as follows:

[0183] When the rotating member 3 is in the first position, the rocker arm 5 swings so that the detected end 52 swings toward the detection position, and the second magnetic member 1552 swings toward the first magnetic member 1551 so that there is a first distance between the two. There is a repulsive force between the first magnetic member 1551 and the second magnetic member 1552, so that the rocker arm 5 can be reset under the action of the repulsive force.

[0184] When the rotating member 3 moves from the first position to the second position, the first magnetic member 1551 and the second magnetic member 1552 release the repulsive force therebetween, causing the rocker arm 5 to swing again, and the second magnetic member 1552 swings in a direction away from the first magnetic member 1551, and the detected end 52 swings from the detection position to the non-detection position. There is a second distance between the first magnetic member 1551 and the second magnetic member 1552, and the first distance is greater than the second distance.

[0185] It can be understood that in some other embodiments, the first magnetic member 1551 and the second magnetic member 1552 can also be realized as opposite magnetic poles arranged relative to each other in the swing direction of the rocker arm 5, and there is an attraction between the two. In the first direction, the first magnetic member 1551 is closer to the developing roller 120 than the second magnetic member 1552. The attraction between the first magnetic member 1551 and the second magnetic member 1552 causes the rocker arm 5 to swing, and the detected end 52 swings from the detection position to the non-detection position.

[0186] It is understandable that in some other embodiments, the second restoring member 156 may also be configured as a magnetic member.

[0187] In this embodiment, the other structures of the developer box 100 are consistent with those in the first embodiment and will not be described here.

[0188] Example 7

[0189] like Figures 23 to 26 As shown, another developing box 100 is provided in this embodiment. The difference between this embodiment and the fifth embodiment is that: in this embodiment, the structure of the first restoring member 155 is different from that in the fifth embodiment.

[0190] The rocker 5 is further provided with an extension portion 57 , which is connected to the force-bearing end 51 . In the first direction, the extension portion 57 is farther away from the second end 12 than the force-bearing end 51 , and an angle is formed between the extension portion 57 and the inclined surface of the force-bearing end 51 .

[0191] The drum assembly 200 further includes a locking member 210 . The photosensitive drum receives the developer transferred by the developing roller 120 to form an electrostatic latent image. The locking member 210 can be used to lock the developing cartridge 100 to prevent the developing cartridge 100 from being separated from the drum assembly 200 .

[0192] Specifically, in this embodiment, the locking member 210 can rotate relative to the drum assembly 200, and the locking member 210 includes a semi-closed locking port 211. The first protective cover 18 also includes a locked member 188, which is a protrusion protruding in a direction away from the developing roller 120. When the developing box 100 is installed to the drum assembly 200, the locked member 188 is located in the locking port 211 and is locked, so that the developing box 100 cannot be detached from the drum assembly 200.

[0193] The drum assembly 200 is provided with a torsion spring 220, which acts on the locking member 210. When the locking member 210 rotates backward, the torsion spring 220 deforms and accumulates elastic force. The torsion spring 220 releases the elastic force to rotate the locking member 210 forward to reset.

[0194] When the developing box 100 is installed on the drum assembly 200, the two are installed in the image forming device. When the rotating member 3 is in the first position and the detected end 52 is in the detection position, the extension portion 57 abuts against the locking member 210, the locking member 210 rotates, and the torsion spring 220 is in a deformed state.

[0195] When the rotating member 3 moves from the first position to the second position, the torsion spring 220 releases the elastic force to reset the locking member 210 and the locking member 210 abuts against the extension portion 57 to push the rocker 5 to swing, so that the detected end 52 moves from the detection position to the non-detection position.

[0196] That is, in this embodiment, the first restoring member 155 serves as the extension portion 57 , and the extension portion 57 enables the rocker rod 5 to reset and swing.

[0197] In this embodiment, the other structures of the developer box 100 are consistent with those in the first embodiment and will not be described here.

[0198] The above descriptions are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A developing cartridge, characterized in that: The developing box includes: The box body is used to store the developer and has a first end and a second end in a first direction; a driving portion, located at the first end, for receiving external power; a developing roller that rotates in response to rotation of the driving portion and includes a developing roller shaft extending in a first direction and a developing body disposed on the developing roller shaft and rotating along with the developing roller shaft, wherein the developing roller shaft and the developing body are insulated from each other; The first conductive member is located at the second end, is electrically connected to the developing body and is not electrically connected to the developing roller shaft, and is used to receive a voltage outside the developing box.

2. A developing cartridge according to claim 1, characterized in that: The device further includes a second conductive member, which is electrically connected to the developing body and the first conductive member, and extends between the first end and the second end of the box body.

3. A developing cartridge according to claim 2, characterized in that: Also included is a storage medium having an electrical contact surface, wherein the electrical contact surface is disposed at the first end.

4. A developing cartridge according to claim 2, characterized in that: It also includes a detected part, which is arranged at the second end.

5. A developing cartridge according to any one of claims 2 to 4, characterized in that: The second end of the box body is provided with a bearing that can rotatably support the developing roller, the first conductive member is supported by the bearing, and the first conductive member is arranged between the bearing and the second end of the box body, and the first conductive member at least partially extends out of the bearing to receive the voltage outside the developing box.

6. A developing cartridge according to claim 5, characterized in that: The first conductive member is an electrode provided on the bearing, and the electrode has a first contact portion, a second contact portion and a third contact portion that are bent to each other. The first contact portion is used to receive a voltage outside the developing box, and the second contact portion abuts and is electrically connected to the second conductive member.

7. A developing cartridge according to claim 2, characterized in that: It also includes a powder feeding roller arranged in the box body for conveying developer to the developing roller, the second conductive part is the powder feeding roller, the powder feeding roller includes a powder feeding roller shaft extending along the first direction and a powder feeding body arranged on the powder feeding roller shaft and rotating with the powder feeding roller shaft, the powder feeding body abuts against and is electrically connected to the developing body.

8. A developing cartridge according to any one of claims 2 to 4, characterized in that: The second conductive member is a powder blade for controlling the thickness of the developer on the developing roller, and the powder blade is in contact with and electrically connected to the developing body.

9. A developing cartridge according to claim 2, characterized in that: The second conductive member is a sealing member extending along the first direction. The sealing member is made of conductive material. One end of the sealing member is fixed to the box body and the other end is in contact with the developing body. The sealing member is used to seal the gap between the developing body and the box body to prevent developer leakage.

10. A developing cartridge according to any one of claims 1 or 7, characterized in that: The third conductive member is an elastic member provided between the first conductive member and the developing body in a first direction, and the third conductive member abuts against and is electrically connected to the first conductive member and the developing body.

11. A developing cartridge according to claim 10, characterized in that: It also includes a conductive gasket that can be sleeved on the developing roller shaft, the conductive gasket is arranged between the elastic member and the developing body, the elastic member abuts against the conductive gasket and is electrically connected to the conductive gasket, and the conductive gasket is electrically connected to the developing body.

12. A developing cartridge according to claim 11, characterized in that: The first conductive member is a bearing that can rotatably support the developing roller. The bearing is arranged at the second end of the box body. The bearing is made of conductive material. The first conductive member abuts against and is electrically connected to the bearing.

13. The developing cartridge according to claim 1, wherein: The developing roller shaft is made of insulating material, or the surface of the developing roller shaft is covered with an insulating layer.

14. A developing cartridge according to claim 7, characterized in that: The powder feeding roller shaft is insulated from the powder feeding body, the first conductive member is electrically connected to the powder feeding body but not to the powder feeding roller shaft, the powder feeding roller shaft is made of insulating material, or the surface of the powder feeding roller shaft is covered with an insulating layer.

Images