Developing cartridge

Abstract

The utility model discloses a developing box which comprises a box body, a developing roller, a driving part, a separating part, a storage medium and an electrode assembly, the developing roller, the driving part, the separating part, the storage medium and the electrode assembly are arranged on the box body, the developing roller can rotate around the axis extending in the first direction, the driving part is arranged at the first end, and the separating part is arranged at the second end. The separation part is used for receiving external power to drive the developing roller to rotate, the separation part is used for receiving separation force to drive the box body to move, the storage medium is used for storing information of the developing box, the electrode assembly is electrically connected with the developing roller and comprises an electrode used for receiving external voltage, the electrode comprises an electric receiving end, and the electric receiving end can move relative to the box body. According to the developing box, the electric receiving end can generate displacement in the axial direction of the developing roller relative to the box body so as to avoid the drum assembly, so that the developing box can be stably and smoothly mounted on the drum assembly, the electrode can stably receive external voltage, and meanwhile, the production cost of the developing box is effectively reduced.

Description

Technical Field

[0001] The present application relates to the field of electronic imaging technology, and in particular to a developing box. Background Art

[0002] A developing cartridge is a detachable part widely used in image forming devices, and includes a developing roller. An image forming device is generally equipped with four developing cartridges to correspond to the four photosensitive drums on the image forming device. Each developing cartridge contains a developer of a different color. The developing roller contacts the photosensitive drum and transfers the developer to the photosensitive drum, allowing the image forming device to better form images using developers of various colors, meeting more printing needs of users. The developing cartridge is provided with bearings and electrodes. The bearings are used to rotatably support the developing roller, and the electrodes are used to receive external voltage so that the developing roller is charged to absorb the developer. In the prior art, the bearings and electrodes are formed integrally, and the entire bearing is made of conductive material. The bearings receive the voltage output by the image forming device through the drum assembly, which is not conducive to controlling the production cost of the developing cartridge. Utility Model Content

[0003] In order to overcome the problems existing in the above-mentioned prior art, the main purpose of the present application is to provide a developer box that can stably receive external voltage and has low cost.

[0004] In order to achieve the above objectives, this application specifically adopts the following technical solutions:

[0005] The present application provides a developing cartridge, comprising:

[0006] The box body includes a first end and a second end in a first direction;

[0007] a developing roller, provided on the box body and capable of rotating around an axis extending in a first direction;

[0008] a driving portion, disposed at the first end, for receiving external power to drive the developing roller to rotate;

[0009] A separation member, provided on the box body, for receiving a separation force to drive the box body to move;

[0010] a storage medium for storing information of the developing cartridge, wherein the storage medium comprises an electrical contact surface located at the first end; and

[0011] An electrode assembly is located at the second end and electrically connected to the developing roller. The electrode assembly includes an electrode for receiving an external voltage. The electrode includes an electrical receiving end that can move relative to the box body.

[0012] In some embodiments, the electrode is movable relative to the housing in the first direction.

[0013] In some embodiments, the electrode includes a first surface, an extension direction of the first surface is inclined relative to the first direction, and the first surface is used to drive the electrode to move in the first direction.

[0014] In some embodiments, the electrode further includes a second surface, an extension direction of the second surface is inclined relative to the first direction, the extension direction of the second surface intersects with the extension direction of the first surface, and the second surface is used to drive the electrode to move in the first direction.

[0015] In some embodiments, the electrode is configured as a rod, and the electrode includes a limited end;

[0016] The developing box also includes a second bearing, which is located at the second end. The second bearing includes a first supporting portion. The electrode is movably supported by the first supporting portion. The electrical receiving end extends out of the first supporting portion. A limiting portion is provided in the first supporting portion. The limiting portion can limit the limited end to prevent the electrode from separating from the first supporting portion in the first direction.

[0017] In some embodiments, the electrode assembly further includes a conductive member, wherein the conductive member is electrically connected to the electrode to receive a voltage, and the conductive member is also electrically connected to the developing roller to transmit a voltage.

[0018] In some embodiments, the conductive member is configured as a steel sheet, and a contact portion in the shape of an elastic arm is provided on the conductive member, and the contact portion is in contact with the developing roller.

[0019] In some embodiments, the electrode assembly further includes an elastic member, the elastic member is in contact with the electrode, and the elastic member can be compressed in a first direction by being abutted by the electrode.

[0020] In some embodiments, the elastic member is a conductive spring, one end of the elastic member contacts the electrode, and the other end of the elastic member contacts the conductive member.

[0021] In some embodiments, the image forming apparatus includes an electric output member, and when the developing cartridge is detachably mounted on a drum assembly of the image forming apparatus, the electric receiving end contacts the electric output member, and the electric receiving end is located outside the drum assembly.

[0022] In some embodiments, the electrode assembly further includes a conductive member electrically connected to the developing roller, the separating member includes a second separating member located at the second end, the second separating member is used to receive the separation force and move relative to the box body, the developing box further includes a second protective cover located at the second end, the second protective cover is used to prevent the second separating member from being separated from the box body, the second protective cover is made of a conductive material, and the second protective cover contacts the electrode and the conductive member to transmit voltage.

[0023] In some embodiments, the electrical receiving end is capable of generating an evasive motion relative to the box body.

[0024] In some embodiments, the developing box further includes a urging portion configured to receive the urging force, and in the second direction, the electrical receiving end is closer to the rotation axis of the developing roller than the urging portion.

[0025] The developer cartridge of the present application includes a cartridge body, a developer roller, a drive unit, a separator, a storage medium, and an electrode assembly. The cartridge body includes a first end and a second end in a first direction. The developer roller is disposed on the cartridge body and is rotatable about an axis extending in the first direction. The drive unit is disposed at the first end and is configured to receive an external power to drive the developer roller to rotate. The separator is disposed on the cartridge body and is configured to receive a separation force to drive the cartridge body to move. The storage medium is configured to store information about the developer cartridge, and the storage medium includes an electrical contact surface located at the first end. The electrode assembly is located at the second end and is electrically connected to the developer roller. The electrode assembly includes an electrode for receiving an external voltage, the electrode including an electrical receiving end that is movable relative to the cartridge body. Compared to the prior art, the present application enables the electrode to be displaced relative to the cartridge body in the axial direction of the developer roller to avoid the drum assembly. This allows the developer cartridge to be stably and smoothly mounted on the drum assembly, and the electrode can stably receive an external voltage. This also effectively reduces the production cost of the developer cartridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural diagram of the developer cartridge being installed on the drum assembly in Example 1 of the present application;

[0027] Figure 2 This is a schematic structural diagram of the drum assembly in Example 1 of the present application;

[0028] Figure 3 This is a schematic diagram of the partial structure of the drum assembly in Example 1 of the present application;

[0029] Figure 4 Schematic diagram of the structure of the developing cartridge in Example 1 of the present application;

[0030] Figure 5 This is an exploded view of the first end in Example 1 of the present application;

[0031] Figure 6 This is an exploded view of the second end in Example 1 of the present application;

[0032] Figure 7 This is a schematic structural diagram of the second bearing in Example 1 of the present application;

[0033] Figure 8 This is a schematic diagram of the structure of the electrode in Example 1 of the present application;

[0034] Figure 9 This is a schematic structural diagram of the electrode assembly in Example 1 of the present application;

[0035] Figure 10 This is a schematic structural diagram of the conductive member in Example 1 of the present application;

[0036] Figure 11 Schematic diagram of the electrode being movable in the first direction in the first embodiment of the present application

[0037] Figure 12 This is a structural schematic diagram of the process of installing the developing cartridge to the drum assembly in the first embodiment of the present application;

[0038] Figure 13 This is a partial cross-sectional view of the developer cartridge installed on the drum assembly in Example 1 of the present application;

[0039] Figure 14 This is a structural diagram of the second end in Example 2 of the present application;

[0040] Figure 15 This is an exploded view of the second end in Example 2 of the present application;

[0041] Figure 16 This is a structural schematic diagram of the developer box installed on the drum assembly in Example 2 of the present application.

[0042] Figure ID:

[0043] 1. Developing cartridge; 10. Cartridge body; 11. First end; 12. Second end; 13. Third end; 14. Fourth end; 15. Fifth end; 16. Sixth end; 101. First bearing; 102. Screw; 111. First protective cover; 1111. Mounting post; 112. Assembly; 1121. First guide portion; 1122. First separating member; 1123. First pushing portion; 113. Storage medium; 114. Bracket; 121. Second bearing; 1211. Second guide portion; 1212. Second pushing portion; 1213. First supporting portion; 1214. Second supporting portion; 1215. Third supporting portion; 1216. First connecting post; 122. Second separating member; 123. Second protective cover; 1231. Electric transmission portion; 131. Developing roller; 132. Powder feeding roller; 133. Powder discharging knife; 1 51. Friction part; 40. Driving part; 401. Power receiving part; 402. Driving gear; 41. Developing gear; 42. Powder feeding gear; 43. First idler; 44. Second idler; 45. Stirring gear; 31. Electrode; 311. Electricity receiving end; 312. First surface; 313. Second surface; 314. Positioned end; 315. Connecting end; 316. Second connecting hole; 317. Third connecting hole; 32. Elastic member; 33. Conductive member; 331. First contact part; 332. Second contact part; 333. Third contact part; 334. Mounting hole; 35. Extension part; 351. Connecting column; 352. First connecting hole; 2. Drum assembly; 21. First side wall; 22. Second side wall; 221. Second force applying member; 222. Electricity transmission part; 23. Photosensitive drum; 91. Electric output member. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0045] In the description of this application, unless otherwise specified or limited, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; unless otherwise specified or explained, the term "plurality" refers to two or more; the terms "connected" and "fixed" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0046] In the description of this specification, it should be understood that the directional words such as "upper" and "lower" described in the embodiments of the present application are described from the perspectives shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it should be understood that when it is mentioned that an element is connected to another element "on" or "under", it can not only be directly connected to the other element "on" or "under", but also indirectly connected to the other element "on" or "under" through an intermediate element.

[0047] In the following descriptions of directions, perpendicular to Figure 1 When viewed from the center of the paper, Figure 1 The left side of the middle paper is left, Figure 1 The right side of the middle paper is right, Figure 1 The upper side of the paper is the top. Figure 1 The lower side of the middle paper is the bottom. Figure 1 The near side of the middle paper is the front, Figure 1 The far side of the middle paper is the back, wherein the left-right direction is the first direction, the front-back direction is the second direction, and the up-down direction is the third direction.

[0048] Example 1

[0049] Reference Figure 1 As shown, an embodiment of the present application discloses a developing cartridge 1 , which is detachably mounted on a drum assembly 2 of an image forming apparatus. The drum assembly 2 is used to carry the developing cartridge 1 so as to provide developer to the drum assembly 2 through the developing cartridge 1 .

[0050] Reference Figure 2 As shown, the drum assembly 2 includes a first side wall 21, a second side wall 22, a photosensitive drum 23, and a force-applying assembly. The photosensitive drum 23 is rotatably supported by the first side wall 21 and the second side wall 22. The photosensitive drum 23 is used to receive the developer provided by the developer cartridge 1 to form an electrostatic latent image. The force-applying assembly is used to apply a pushing force to the developer cartridge 1. The force-applying assembly includes a first force-applying member (not shown) and a second force-applying member 221. The first force-applying member is disposed near the first side wall 21, and the second force-applying member 221 is disposed near the second side wall 22. The first force-applying member and the second force-applying member 221 are both connected to an elastic member. The first force-applying member and the second force-applying member 221 can move relative to the photosensitive drum 23.

[0051] Reference Figure 3 As shown, the drum assembly 2 also includes an electric transmission portion 222, which is arranged on the second side wall 22. The electric transmission portion 222 is arranged adjacent to the second force applying member 221 and is closer to the photosensitive drum 23 than the second force applying member 221. The electric transmission portion 222 can be used to receive the voltage output by the image forming device.

[0052] Reference Figure 4As shown, the developer cartridge 1 includes a cartridge body 10, a developing assembly, a transmission assembly, a separation assembly, and an electrode assembly. The developing assembly is at least partially rotatably mounted on the cartridge body 10. The transmission assembly is disposed at an end of the cartridge body and is in driving connection with some components of the developing assembly. The transmission assembly is configured to receive a driving force output by the image forming device to drive some components of the developing assembly. A separation assembly is disposed within the cartridge body and is configured to separate the developing roller and the photosensitive drum.

[0053] Continue to refer to Figure 4 As shown, the cartridge 10 contains developer. The cartridge 10 has a first end 11 and a second end 12 disposed opposite each other in the first direction. It also has a third end 13 and a fourth end 14 disposed opposite each other in the second direction. Furthermore, it has a fifth end 15 and a sixth end 16 disposed opposite each other in the third direction. The fifth end 15 is provided with a friction portion 151 having a plurality of ribs extending in the first direction. The friction portion 151 facilitates the user's handling of the developer cartridge 1. A transmission assembly is located at the first end 11 and is configured to receive power output by the image forming apparatus. An electrode assembly is located at the second end 12 and is configured to receive a voltage output by the power transmission portion 222 and transmit the voltage to the developer assembly.

[0054] The developing assembly includes a developing roller 131, a stirring frame (not shown), a powder feed roller 132, and a powder discharge knife 133. The developing roller 131, the stirring frame, and the powder feed roller 132 are all rotatably supported by the first end 11 and the second end 12. The rotation axes of the developing roller 131, the stirring frame, and the powder feed roller 132 all extend in a first direction. The powder feed roller 132 is arranged adjacent to the developing roller 131 and is used to transfer developer to the developing roller 131. The stirring frame is used to stir the developer in the box body 10, causing friction in the developer and preventing the developer from clumping. The developing roller 131 can absorb the developer and contacts the photosensitive drum 23 to transfer the developer to the photosensitive drum 23. The powder discharge knife 133 contacts the developing roller 131 and is used to control the thickness of the developer layer on the developing roller 131.

[0055] The developer cartridge further includes an identification component located at the first end 11. In this embodiment, the identification component is specifically a storage medium 113. The storage medium 113 is used to store information about the developer cartridge 1. When the developer cartridge 1 is installed in an image forming device, the storage medium 113 transmits the information to the image forming device so that the developer cartridge 1 can be identified by the image forming device. The storage medium 113 includes an electrical contact surface that contacts the image forming device.

[0056] In some embodiments, the housing 10 is provided with a bracket 114 that is movable relative to the housing 10. The storage medium 113 is supported by the bracket 114, allowing the storage medium 113 to follow the movement of the bracket 114 relative to the housing 10. In other embodiments, the bracket 114 and the storage medium 113 may not move relative to the housing 10.

[0057] Reference Figure 5 As shown, in some embodiments, the developing box 1 may further include a plurality of screws 102 , and the plurality of screws 102 are used to fix the remaining components in the developing box 1 and the box body 10 together.

[0058] Continue to refer to Figure 5 As shown, the developing box further includes a first protective cover 111, which is detachably fixed to the first end 11 by screws 102. The first protective cover 111 at least covers a portion of the transmission assembly, and is used to protect the transmission assembly.

[0059] The transmission assembly includes a driving part 40, which includes a power receiving part 401 and a driving gear 402. The power receiving part 401 and the driving gear 402 can be integrally formed or combined. In the first direction, the driving gear 402 is closer to the first end 11 than the power receiving part 401. The power receiving part 401 is used to receive power output by the image forming device, thereby driving the driving gear 402 to rotate.

[0060] The transmission assembly also includes a developing gear 41, a powder feeding gear 42, a first idler gear 43, a second idler gear 44, and a stirring gear 45. The powder feeding gear 42 is meshed with the drive gear 402 to receive power and rotate. The first idler gear 43 is simultaneously meshed with the powder feeding gear 42 and the developing gear 41 to receive power and transmit the power to the developing gear 41. The second idler gear 44 is simultaneously meshed with the drive gear 402 and the stirring gear 45 to transmit the power to the stirring gear 45. The developing gear 41 is fixedly mounted on the end of the developing roller 131 located at the first end 11 and drives the developing roller 131 to rotate. The powder feeding gear 42 is fixedly mounted on the end of the powder feeding roller 132 located at the first end 11 and drives the powder feeding roller 132 to rotate. The stirring gear 45 is fixedly mounted on the end of the stirring frame located at the first end 11 and drives the stirring frame to rotate. This embodiment does not limit the number of gears and the meshing relationship of the transmission assembly, and can be set according to actual needs.

[0061] The developing box also includes a first bearing 101, which is arranged at the first end 11. The first bearing 101 can rotatably support the developing roller 131 and the powder feeding roller 132 located at one end of the first end 11, and the first bearing 101 is provided with multiple support columns, which are respectively used to support the driving part 40 and the remaining gears.

[0062] Also refer to Figure 4 and Figure 5As shown, the developing box 1 also includes an assembly 112, which is arranged at the first end 11. In this embodiment, the assembly 112 is detachably fixed on the first protective cover 111 through a mounting column 1111 extending along the first direction on the first protective cover 111. In some embodiments, the assembly 112 can also be integrally formed with the first protective cover 111 or the box body 10.

[0063] The assembly 112 includes a first guide portion 1121, a first separator 1122, and a first urging portion 1123, which are integrally formed or assembled separately. The first guide portion 1121 is arc-shaped and faces the third end 13. The first guide portion 1121 is used to guide the developer cartridge 1 when it is installed on the drum assembly of the image forming device, ensuring smooth installation. The first separator 1122 protrudes in a first direction away from the first end 11. The first separator 1122 is used to receive the separation force applied by the separation rocker (not shown) on the drum assembly 2, thereby driving the cartridge body 10 to move, thereby separating the developing roller 131 from the photosensitive drum 23. The first pushing portion 1123 is located below the first guide portion 1121 in the third direction, and behind the first guide portion 1121 in the second direction. The first pushing portion 1123 is used to receive the pushing force applied by the drum assembly 2 by being abutted by the first force-applying member, so that the developing roller 131 maintains contact with the photosensitive drum 23.

[0064] Reference Figure 6 As shown, the developer cartridge 1 further includes a second separator 122 and a second protective cover 123. The second separator 122 and the second protective cover 123 are disposed at the second end 12. The second separator 122 is configured to receive a separation force applied by a separation cam (not shown) within the image forming device, thereby disengaging the developing roller 131 from the photosensitive drum 23. The first separator 1122 and the second separator 122 constitute a separation assembly. The second separator 122 can move relative to the cartridge body 10. In this embodiment, the separation assembly preferably swings, but can also move in a translational manner. In some embodiments, only one separator may be provided. The second protective cover 123 is fixedly mounted to the cartridge body 10 by screws 102. The second protective cover 123 is configured to prevent the second separator 122 from disengaging from the cartridge body 10.

[0065] Also refer to Figure 6 and Figure 7 As shown, the developing box 1 further includes a second bearing 121 , which is disposed at the second end 12 . The second bearing 121 rotatably supports the developing roller 131 and the powder feeding roller 132 located at one end of the second end 12 .

[0066] The second bearing 121 includes a second guide portion 1211, a second urging portion 1212, a first support portion 1213, a second support portion 1214, a third support portion 1215, and a first connecting post 1216. The second guide portion 1211 is cylindrical and, together with the first guide portion 1121, forms a guide assembly for guiding the developer cartridge 1 to be smoothly installed in the drum assembly. The second urging portion 1212, abutted by the second force-applying member 221, receives the urging force applied by the drum assembly 2, ensuring close contact between the developing roller 131 and the photosensitive drum 23. The first support portion 1213 is disposed adjacent to the second urging portion 1212. In the second direction, the first support portion 1213 is closer to the rotation axis of the developing roller 131 than the second urging portion 1212. The first support portion 1213 is in the form of a hole extending in the first direction. In this embodiment, it is preferably a through hole, more preferably a circular through hole. A limiting portion 12131 is disposed within the first support portion 1213. The limiting portion 12131 is in the form of a circular protrusion extending radially inward from the first support portion 1213. The diameter of the limiting portion 12131 is smaller than that of the first support portion 1213. The second support portion 1214 and the third support portion 1215 are respectively configured to rotatably support the developing roller 131 and the powder feeding roller 132 at one end of the second end 12. The first connecting post 1216 is a protrusion extending in the first direction. In this embodiment, two first connecting posts 1216 are preferably provided.

[0067] Continue to refer to Figure 6 As shown, the electrode assembly includes an electrode 31 and a conductive member 33. The electrode 31 is located at the second end 12. The conductive member 33 is electrically connected to the electrode 31, the developing roller 131, and the powder feeding roller 132 (it can be electrically connected to the developing roller 131 and the powder feeding roller 132 as a whole or partially). Therefore, the electrode 31 receives the voltage output by the image forming device and transmits the voltage to the developing roller 131 and the powder feeding roller 132 through the conductive member 33. Specifically, the electrode 31 is movably disposed on the second bearing 121 and is capable of moving in the first direction, that is, the electrode 31 is capable of displacement relative to the box body 10. The electrode 31 is an irregular rod-shaped electrode extending in the first direction. The electrode 31 is movably mounted on the first support portion 1213. The mounting method is preferably such that the electrode 31 is slidable from right to left in the first direction. The electrode 31 can slide in the first direction guided by the extension direction of the first support portion 1213.

[0068] The electrode assembly also includes an elastic member 32, the ends of which are electrically connected to the electrode 31 and the conductive member 33, respectively. The electrode 31 is configured to receive the voltage output by the power transmission unit 222 and transmit the voltage to the developing roller 131 and the powder feeding roller 132 through the elastic member 32 and the conductive member 33. In other words, in this embodiment, the elastic member 32 can be considered an intermediate conductive member, but in some embodiments, the intermediate conductive member can also be other components.

[0069] Reference Figure 8 As shown, the electrode 31 includes an electrical receiving end 311, a restricted end 314, and a connecting end 315. The electrical receiving end 311 and the connecting end 315 are respectively connected to the ends of the restricted end 314. In the first direction, the restricted end 314 is located between the electrical receiving end 311 and the connecting end 315, and the radial length of the restricted end 314 is greater than the radial length of the electrical receiving end 311. The restricted end 314 is mounted on the first support portion 1213 and is restricted by the restricting portion 12131 to prevent the electrode 31 from detaching from the first support portion 1213 to the left in the first direction. The connecting end 315 is electrically connected to the conductive member 33. The electrical receiving end 311 extends through the first support portion 1213 and is farther away from the first end 11 than the connecting end 315. The power receiving end 311 is used to contact the power transmission portion 222 to receive voltage and transmit the voltage to the developing roller 131 and the powder feeding roller 132 through the limited end 314, the connecting end 315 and the conductive member 33. In the second direction, the power receiving end 311 is closer to the rotation axis of the developing roller 131 than the second urging portion 1212.

[0070] The electrical receiving end 311 is provided with a first surface 312 and a second surface 313 that are arranged opposite to each other. In this embodiment, the first surface 312 and the second surface 313 are preferably inclined surfaces. In other embodiments, the first surface 312 and the second surface 313 can also be arcuate surfaces or curved surfaces. The first surface 312 and the second surface 313 are inclined relative to the first direction, and the first surface 312 extends downwardly and the second surface 313 extends upward. That is, the inclination directions of the first surface 312 and the second surface 313 intersect. The first surface 312 and the second surface 313 enable the electrode 31 to move relative to the box body 10 in the first direction, and further, enable the electrode 31 to move rightward in the first direction. When the developer cartridge 1 is installed in the drum assembly 2, the first surface 312 abuts against a component on the drum assembly 2, causing the electrode 31 to avoid and move rightward in the first direction. When the developer cartridge 1 is removed from the drum assembly 2, the second surface 313 abuts against a component on the drum assembly 2, causing the electrode 31 to avoid and move rightward in the first direction again. In one embodiment, the electrode 31 can also move in the second direction and the third direction relative to the box body 10 by simply changing the extension direction of the first surface 312 and the second surface 313 .

[0071] Reference Figure 9As shown, the elastic member 32 is located in the first support portion 1213, and the elastic member 32 can be compressed and stretched in the first direction. One end of the elastic member 32 in the first direction is sleeved on the connecting end 315 of the electrode 31 and is connected by an interference fit to prevent the elastic member 32 from separating from the electrode 31. When the electrode 31 is abutted and moves to the right along the first direction, the elastic member 32 is compressed and accumulates elastic force. When the electrode 31 loses the abutment, the elastic member 32 releases the elastic force, causing the electrode 31 to move to the left along the first direction. In this embodiment, the elastic member 32 is a conductive material, and the elastic member 32 is preferably a conductive spring. In other embodiments, it can be other elastic materials such as sponge.

[0072] Reference Figure 10 As shown, the conductive member 33 includes a first contact portion 331, a second contact portion 332, a third contact portion 333, and a mounting hole 334. The mounting hole 334 is preferably a through hole that mates with the first connecting post 1216 on the second bearing 121, allowing the conductive member 33 to be supported by the second bearing 121. The other end of the elastic member 32 in the first direction contacts the first contact portion 331. The second contact portion 332 and the third contact portion 333 are preferably in the shape of elastic arms. The second contact portion 332 elastically contacts the developing roller 131, and the third contact portion 333 elastically contacts the powder feed roller 132. The electrode 31 transmits the voltage received from the power transmission portion 222 to the developing roller 131 and the powder feed roller 132 via the elastic member 32 and the conductive member 33, thereby charging the developing roller 131 and the powder feed roller 132 to attract the developer. In this embodiment, the conductive member 33 is preferably a conductive steel sheet. In other embodiments, the conductive member 33 can also be made of other conductive materials such as conductive resin. In some embodiments, the elastic member 32 may not be provided, the conductive member 33 is in direct contact with the electrode 31 , and the electrode 31 or the conductive member 33 has elastic force.

[0073] Reference Figures 11 to 13 As shown, during the process of installing the developer box 1 to the drum assembly 2, the first surface 312 of the electrode 31 abuts against the component on the drum assembly 2, and the electrode 31 avoids and moves to the right in the first direction relative to the box body 10. When the developer box 1 is completely installed on the drum assembly 2, the electrical receiving end 311 of the electrode 31 contacts the electrical transmission part 222 on the drum assembly 2 to receive the voltage, and then transmits the voltage to the developing roller 131 and the powder feeding roller.

[0074] This embodiment is composed of a second bearing 121 and an electrode assembly. The electrode 31 can move relative to the box body 10 to avoid components in the drum assembly 2, so that the developing box 1 can be stably and smoothly installed on the drum assembly 2. The electrode 31 stably receives external voltage and effectively reduces the production cost of the developing box 1.

[0075] Example 2

[0076] Unless otherwise specified, the structure of the developing cartridge in this embodiment is the same as that in embodiment 1. The main difference between this embodiment and embodiment 1 is the arrangement of the electrode assembly in this embodiment. In this embodiment, the electrode is arranged on the second protective cover.

[0077] Reference Figure 14 As shown, the second protective cover 123 is made of a conductive material, and the electrode 31 and the conductive member 33 are electrically connected to the second protective cover 123, so that the voltage output by the image forming device can be received by the electrode 31 and transmitted to the developing roller 131 and the powder feeding roller 132 through the second protective cover 123 and the conductive member 33. The second protective cover 123 can be regarded as an intermediate conductive member.

[0078] Reference Figure 15 As shown, the second protective cover 123 further includes an extension portion 35, which protrudes in the first direction and is bent. The extension portion 35 is provided with a connecting post 351 and a first connecting hole 352. The connecting post 351 protrudes in the first direction, and the first connecting hole 352 is a hole extending in the first direction. The second protective cover 123 is also provided with an electrical transmission portion 1231 at the end in the second direction near the developing roller 131.

[0079] The electrode assembly also includes a fixing part. The electrode 31 includes an electrical receiving end 311, a second connecting hole 316 and a third connecting hole 317. The second connecting hole 316 is used to cooperate with the connecting column 351 of the extension portion 35, so that the electrode 31 is supported by the second protective cover 123. The third connecting hole 317 is preferably a circular hole. The third connecting hole 317 is arranged in cooperation with the first connecting hole 352. The fixing part passes through the third connecting hole 317 and the first connecting hole 352 at the same time, so that the electrode 31 is further fixed on the second protective cover 123, thereby realizing the electrical connection between the electrode 31 and the extension portion 35.

[0080] In this embodiment, the first connection hole 352 is preferably a screw hole, and the fixing member is preferably a screw 102. The electrode 31 is preferably made of a conductive steel sheet, and in other embodiments, it can be made of a conductive material such as resin. The electrical receiving end 311 is preferably elastic and can bend and deform to a certain extent when subjected to force (i.e., it can move relative to the box body 10). This structure allows the developer cartridge 1 to avoid interfering components in the image forming device during installation in the image forming device. The electrical receiving end 311 is located outside the drum assembly 2.

[0081] Reference Figure 16 As shown, an electric output member 91 is provided in the image forming apparatus, and the electric receiving end 311 contacts the electric output member 91 to receive voltage and transmits the voltage to the extension portion 35 , and then transmits the voltage to the second protective cover 123 through the extension portion 35 .

[0082] The difference between the conductive member 33 of this embodiment and that of the first embodiment is that the first contact portion 331 contacts the electrical transfer portion 1231 of the second protective cover 123. Preferably, the first contact portion 331 has a certain elasticity, and the two are in elastic contact so that the second protective cover 123 transfers the voltage to the conductive member 33, thereby causing the conductive member 33 to transfer the voltage to the developing roller 131 and the powder feeding roller 132.

[0083] The electrode assembly of this embodiment includes an electrode 31, a second protective cover 123 and a conductive member 33. The developing box 1 is directly in contact with the electrical output member 91 in the image forming device to receive voltage, which can ensure stable voltage transmission.

[0084] In some embodiments, the second protective cover 123 may also be made of non-conductive material, and other conductive components may serve as intermediate conductive members to connect the electrode 31 and the conductive member 33, or the conductive member 33 may directly contact the electrode 31, or the two may be formed integrally.

[0085] The above description is merely a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A developing cartridge, characterized in that: include: The box body includes a first end and a second end in a first direction; a developing roller, provided on the box body and capable of rotating around an axis extending in a first direction; a driving portion, disposed at the first end, for receiving external power to drive the developing roller to rotate; A separation member, provided on the box body, for receiving a separation force to drive the box body to move; a storage medium for storing information of the developing cartridge, wherein the storage medium comprises an electrical contact surface located at the first end; An electrode assembly is located at the second end and electrically connected to the developing roller. The electrode assembly includes an electrode for receiving an external voltage. The electrode includes an electrical receiving end that can move relative to the box body.

2. The developing cartridge according to claim 1, wherein The electrode is movable relative to the box body in the first direction.

3. The developing cartridge according to claim 2, wherein: The electrode includes a first surface, an extension direction of the first surface is inclined relative to the first direction, and the first surface is used to drive the electrode to move in the first direction.

4. The developing cartridge according to claim 3, wherein: The electrode further includes a second surface, an extension direction of the second surface is inclined relative to the first direction, the extension direction of the second surface intersects with the extension direction of the first surface, and the second surface is used to drive the electrode to move in the first direction.

5. The developing cartridge according to claim 3, wherein: The electrode is configured as a rod, and includes a limited end; The developing box also includes a second bearing, which is located at the second end. The second bearing includes a first supporting portion. The electrode is movably supported by the first supporting portion. The electrical receiving end extends out of the first supporting portion. A limiting portion is provided in the first supporting portion. The limiting portion can limit the limited end to prevent the electrode from separating from the first supporting portion in the first direction.

6. The developing cartridge according to claim 3, wherein: The electrode assembly further includes a conductive member electrically connected to the electrode to receive a voltage, and the conductive member is also electrically connected to the developing roller to transmit a voltage.

7. The developing cartridge according to claim 6, wherein: The conductive member is configured as a steel sheet. A contact portion in the shape of an elastic arm is provided on the conductive member, and the contact portion contacts the developing roller.

8. The developing cartridge according to claim 6, wherein: The electrode assembly further includes an elastic member, the elastic member being in contact with the electrode and capable of being compressed in a first direction by being abutted by the electrode.

9. The developing cartridge according to claim 8, wherein: The elastic member is a conductive spring, one end of the elastic member is in contact with the electrode, and the other end of the elastic member is in contact with the conductive member.

10. The developing cartridge according to claim 1, wherein The image forming device includes an electric output member. When the developing cartridge is detachably mounted on a drum assembly of the image forming device, the electric receiving end contacts the electric output member. The electric receiving end is located outside the drum assembly.

11. The developing cartridge according to claim 10, wherein: The electrode assembly also includes a conductive member, which is electrically connected to the developing roller. The separator includes a second separator located at the second end, and the second separator is used to receive a separation force and move relative to the box body. The developing box also includes a second protective cover located at the second end, and the second protective cover is used to prevent the second separator from separating from the box body. The second protective cover is made of a conductive material, and the second protective cover is in contact with the electrode and the conductive member to transmit voltage.

12. The developing cartridge according to claim 11, wherein: The electrical receiving end can generate an evasive movement relative to the box body.

13. The developing cartridge according to claim 1, wherein The developing box further includes a urging portion configured to receive an urging force, and in the second direction, the electricity receiving end is closer to the rotation axis of the developing roller than the urging portion.

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