Developing cartridge

Abstract

The utility model discloses a developing box which comprises a box body, a developing roller, a power receiving part, a storage medium, an electric contact surface and a separating assembly, the separating assembly is used for receiving separating force applied by an image forming device so as to separate the developing box from a photosensitive drum of a drum assembly, and the separating assembly comprises a separating force receiving part and a flexible part; the separating force receiving part can receive separating force applied by the image forming device, one end of the flexible part is connected with the separating force receiving part, and when the separating force receiving part receives the separating force, the direction of the separating force can be changed through the flexible part so that the developing box can move relative to the drum assembly. When the developing box does not work, the separating force receiving part can be used for receiving the separating force applied by the image forming device, and the direction of the separating force is changed through the flexible part, so that the developing box can move relative to the drum, the developing box is separated from the photosensitive drum, and the developing roller and the photosensitive drum are prevented from being damaged due to long-time contact; and the imaging quality of the image forming device is improved.

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

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

[0005] The present application provides a developing cartridge that is detachably mounted on a drum assembly of an image forming device, the developing cartridge comprising:

[0006] The box body has a first end and a second end in the first direction, a third end and a fourth end in the second direction, and a fifth end and a sixth end in the third direction;

[0007] a developing roller rotatable about a first axis extending in a first direction;

[0008] a power receiving portion rotatable about a second axis extending in the first direction and located at the first end;

[0009] a storage medium storing information of the developing cartridge;

[0010] an electrical contact surface capable of being electrically connected to the storage medium;

[0011] A separation assembly, configured to receive a separation force applied by an image forming device to separate the developing cartridge from the photosensitive drum of the drum assembly, comprising:

[0012] a separating force receiving member capable of receiving a separating force applied by the image forming device;

[0013] A flexible member has one end connected to the separation force receiving member. When receiving the separation force, the separation force receiving member can change the direction of the separation force through the flexible member to move the developing box relative to the drum assembly.

[0014] In some embodiments, at least a portion of the flexible member is located at the second end.

[0015] In some embodiments, the separation force receiving member is disposed at the second end, and is capable of moving relative to the box body after receiving the separation force, and drives the flexible member to move relative to the box body.

[0016] In some embodiments, the second end is provided with a third track, the third track is arc-shaped, and the flexible member moves along the third track.

[0017] In some embodiments, the flexible member abuts the second end to move the second end relative to the drum assembly.

[0018] In some embodiments, the separation assembly further includes a transmission member, which is disposed at the second end. The other end of the flexible member is connected to the transmission member, and the flexible member drives the transmission member to move so that the transmission member abuts against the drum assembly.

[0019] In some embodiments, the flexible member is at least partially located between the first end and the second end.

[0020] In some embodiments, the separation force receiving member abuts the drum assembly, causing the second end to move relative to the drum assembly;

[0021] The other end of the flexible member is connected to the first end, and the separation force receiving member enables the first end to move relative to the drum assembly through the flexible member.

[0022] In some embodiments, in a first direction, the point where the separation force receiving member and the flexible member are connected does not coincide with a projection of a point where the flexible member is connected to the first end, and in a second direction, the point where the flexible member is connected to the first end is closer to the developing roller than the point where the separation force receiving member and the flexible member are connected.

[0023] In some embodiments, the separation force receiving member is provided at the first end, and the separation force receiving member is a protrusion or the flexible member.

[0024] The developer cartridge of the present application includes a cartridge body, a developer roller, a power receiving portion, a storage medium, an electrical contact surface, and a separation assembly. The developer roller is capable of rotating about a first axis extending in a first direction, the power receiving portion is capable of rotating about a second axis extending in the first direction, the storage medium stores information about the developer cartridge, the electrical contact surface is capable of being electrically connected to the storage medium, and the separation assembly is configured to receive a separation force applied by an image forming device to separate the developer cartridge from a photosensitive drum of a drum assembly. The separation assembly includes a separation force receiving member and a flexible member. The separation force receiving member is capable of receiving the separation force applied by the image forming device, one end of the flexible member being connected to the separation force receiving member. When receiving the separation force, the separation force receiving member can change the direction of the separation force through the flexible member to move the developer cartridge relative to the drum assembly. Compared to the prior art, the present application, when the developer cartridge is not in operation, can receive the separation force applied by the image forming device and change the direction of the separation force through the flexible member to move the developer cartridge relative to the drum, thereby separating the developer cartridge and the photosensitive drum. This prevents damage to the developer roller and the photosensitive drum due to prolonged contact, thereby improving the imaging quality of the image forming device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the drum assembly provided by this application;

[0026] Figure 2 This is a schematic diagram of the overall structure of the developing cartridge in Example 1 of the present application;

[0027] Figure 3 This is a partially exploded schematic diagram of a developing cartridge in Example 1 of the present application;

[0028] Figure 4 This is a schematic structural diagram of the first end of the developing cartridge in Example 1 of the present application;

[0029] Figure 5 is an exploded view of the first end of the developing cartridge in Example 1 of the present application;

[0030] Figure 6 This is a schematic structural diagram of the second end of the developing cartridge in Example 1 of the present application;

[0031] Figure 7 is an exploded view of the second end of the developing cartridge in Example 1 of the present application;

[0032] Figure 8 This is a schematic structural diagram of the second end when the drum and roller are separated in Example 1 of the present application;

[0033] Figure 9 This is a simplified top view of the second end drum roller of Example 1 of the present application when it is separated;

[0034] Figure 10 This is a schematic structural diagram of the first end when the drum and roller are separated in Example 1 of the present application;

[0035] Figure 11 This is a schematic structural diagram of the second end of the developing cartridge in Example 2 of the present application;

[0036] Figure 12 This is a schematic structural diagram of the first end of the developing cartridge in Example 2 of the present application;

[0037] Figure 13 This is a schematic structural diagram of the second end when the drum and roller are separated in Example 2 of the present application;

[0038] Figure 14 This is a schematic structural diagram of the first end when the drum and roller are separated in Example 2 of the present application;

[0039] Figure 15 This is a schematic structural diagram of the first end of the developing cartridge in Example 3 of the present application;

[0040] Figure 16 This is a schematic structural diagram of the second end of the developing cartridge in Example 3 of the present application;

[0041] Figure 17 This is a schematic structural diagram of the first end when the drum and roller are separated in Example 3 of the present application;

[0042] Figure 18 This is a schematic structural diagram of the second end when the drum and roller are separated in Example 3 of the present application;

[0043] Figure 19 is an exploded view of the second end of the developing cartridge in the fourth embodiment of the present application;

[0044] Figure 20 is a cross-sectional view of the second end when the drum and roller are separated in the fourth embodiment of the present application;

[0045] Figure 21 is an exploded view of the second end of the developing cartridge in the fifth embodiment of the present application;

[0046] Figure 22 It is a cross-sectional view of the second end when the drum and roller are separated in the fifth embodiment of the present application. DETAILED DESCRIPTION

[0047] 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.

[0048] 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.

[0049] 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.

[0050] In the following description of directions, 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. The above is only for the convenience of better description of the position and movement relationship of the corresponding components, rather than the displacement direction. In other implementations, there may be different definitions as long as they are convenient for explanation.

[0051] At present, an image forming device generally includes a drum assembly, a separation output member and an identification slot. The drum assembly is used to carry a developing cartridge, the separation output member is used to apply a separation force to the developing cartridge installed on the drum assembly, and an electric contact pin is provided in the identification slot for identifying information of the developing cartridge installed on the drum assembly.

[0052] like Figure 1 As shown, the drum assembly 2 includes a first side wall 21, a second side wall 22, and a photosensitive drum 23. The photosensitive drum 23 is rotatably supported by the first and second side walls 21, 22. The photosensitive drum 23 is used to receive developer provided by the developer cartridge to form an electrostatic latent image. A first guide portion 211 is provided on the first side wall 21, and a second guide portion 221 and an abutment portion 222 are provided on the second side wall 22. The first guide portion 211 and the second guide portion 221 are both arc-shaped openings used to guide the developer cartridge to be smoothly installed on the drum assembly 2. The abutment portion 222 is provided adjacent to the second guide portion 221 and is configured as an inclined surface. The force-applying assembly is used to apply a pushing force in a second direction to the developer cartridge installed on the drum assembly 2, so that the photosensitive drum 23 can more stably receive the developer.

[0053] Example 1

[0054] like Figure 2 As shown, an embodiment of the present application discloses a developing box 1, which is detachably mounted on a drum assembly 2.

[0055] like Figures 2 to 4 As shown, the developing box 1 includes a box body 10, a developing assembly, a transmission assembly, a separation assembly, and an identification assembly. The box body 10 is used to accommodate the developer, and the box body 10 has a first end 11 and a second end 12 in the first direction, a third end 13 and a fourth end 14 in the second direction, and a fifth end 15 and a sixth end 16 in the third direction ( Figure 6 (shown in the figure), a friction portion 151 is further provided on the fifth end 15. The friction portion 151 comprises a plurality of ribs extending along a first direction, which facilitates the user's handling of the developer cartridge 1. The developer assembly is rotatably mounted on the cartridge body 10. The transmission assembly is located at the first end 11 and connected to the developer assembly. The transmission assembly is configured to receive driving force output by the image forming device to drive the developer assembly to rotate. Of course, in other embodiments, the drive assembly may also be located at the second end 12 of the cartridge body 10.

[0056] The developing assembly includes a developing roller 131, a powder feed roller, a powder discharge blade 132, and a stirring frame. The developing roller 131, the stirring frame, and the powder feed roller are all rotatably mounted within the housing 10, with their rotational axes extending along a first direction. The powder feed roller is used to transfer developer to the developing roller 131, which is used to contact the photosensitive drum 23 to transfer the developer to the photosensitive drum 23. The stirring frame is used to stir the developer to prevent it from clumping. The powder discharge blade 132 extends along the first direction and is used to contact the surface of the developing roller 131 to control the thickness of the developer layer on the developing roller 131.

[0057] like Figure 5 As shown, the transmission assembly includes a driving portion 40, which includes a power receiving portion 401 and a driving gear 402. The power receiving portion 401 is used to receive power output by the image forming device, thereby driving the driving gear 402 to rotate.

[0058] The transmission assembly further 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 meshes with the drive gear 402 to receive power and rotate. The first idler gear 43 meshes with the drive gear 402 and the developing gear 41 to receive power and transmit it to the developing gear 41. The second idler gear 44 meshes with both the drive gear 402 and the stirring gear 45 to transmit power to the stirring gear 45. This embodiment does not limit the number of gears in the transmission assembly and the meshing relationship, and can be set according to actual needs.

[0059] In other embodiments, the developing box 1 may not be provided with a stirring frame and a stirring gear 45 for transmitting power to the stirring frame. At the same time, the second idler gear 44 may be provided between the developing gear 41 and the powder feeding gear 42, that is, the powder feeding gear 42 is engaged with the driving gear 402, and the developing gear 41 is engaged with the powder feeding gear 42 through the first idler gear 43 and the second idler gear 44 to receive the driving force.

[0060] The developing box 1 also includes a first bearing 115, which is arranged at the first end 11. The first bearing 115 is used to support the developing roller 131 and the powder feeding roller at one end of the first end 11. Preferably, a plurality of support columns are also provided on the first bearing 115, and the plurality of support columns can rotatably support at least part of the transmission component.

[0061] The developer cartridge 1 further includes a first protective cover 111 disposed at the first end 11. The first protective cover 111 at least partially covers the transmission assembly to protect the transmission assembly. The first protective cover 111 includes a collar portion 1113 extending along a first direction. The collar portion 1113 is hollow and cylindrical, and is provided with a through hole. The power receiving portion 401 is exposed through the through hole to receive power. The collar portion 1113 protects the driving unit 40. In other embodiments, the collar portion 1113 may not be provided, so that the driving unit 40 itself has a certain degree of protection.

[0062] The first protective cover 111 is also provided with a second mounting portion 1112 and a load-bearing column 1111. In this embodiment, the second mounting portion 1112 is integrally formed with the first protective cover 111. In other embodiments, the second mounting portion 1112 can also be provided as a separate component, which is not limited here. The second mounting portion 1112 is internally provided with a guide rail, which extends along the third direction and has openings at both ends of the extension direction. The second mounting portion 1112 and the load-bearing column 1111 are used to cooperate with the separation component. The specific cooperation method will be detailed below.

[0063] The identification assembly is located at the first end 11 of the cartridge body 10. In this embodiment, the identification assembly includes a storage medium 33, which is provided with an electrical contact surface 34. The storage medium 33 is used to store information about the developer cartridge 1, and the electrical contact surface 34 is used to electrically connect to the electrical contact pins in the identification slot of the image forming device. When the developer cartridge 1 is installed in the image forming device, the developer cartridge 1 is electrically connected to the image forming device via the electrical contact surface 34, so that the information in the storage medium 33 can be transmitted to the image forming device, thereby allowing the developer cartridge 1 to be identified by the image forming device. The storage medium 33 and the electrical contact surface 34 can be formed as a single piece or as separate components.

[0064] In order to facilitate the installation of the storage medium 33 , the developing box 1 further includes a chip rack 32 . The chip rack 32 can be fixedly disposed on the first protective cover 111 , and the storage medium 33 is installed on the chip rack 32 .

[0065] In some embodiments, the chip frame 32 may be directly fixed on the box body 10 or the chip frame 32 and the first protective cover 111 may be integrally formed.

[0066] Reference Figures 4 to 7 As shown, the developer cartridge 1 further includes a guided assembly and a pushing assembly. The guided assembly includes a first guided portion 1121 and a second guided portion 1241. The first guided portion 1121 is located at the first end 11, and the second guided portion 1241 is located at the second end 12. The first guided portion 1121 is guided by the first guide portion 211, and the second guided portion 1241 is guided by the second guide portion 221, to guide the developer cartridge 1 to be smoothly installed on the drum assembly 2. When the developer cartridge 1 is installed on the drum assembly 2, the pushing assembly is abutted by the force-applying member, so that the developer cartridge 1 receives the pushing force applied by the drum assembly 2, bringing the developing roller 131 into close contact with the photosensitive drum 23. The pushing assembly includes a first pushing portion 1122 located at the first end 11 and a second pushing portion 1242 located at the second end 12. The first pushing portion 1121 is abutted by the first force-applying member to receive the pushing force, while the second pushing portion 1242 is abutted by the second force-applying member to receive the pushing force. In this embodiment, the first forcing portion 1122 and the first guided portion 1121 are integrally formed into an assembly 112 to simplify the structure of the developing cartridge 1 . The assembly 112 can be integrally formed with the cartridge body 10 or can be separately provided.

[0067] In order to facilitate filling of carbon powder, a powder filling port 121 is further provided at the second end 12 , through which the developer is poured into the box body 10 . A sealing cover is provided at the powder filling port 121 , which is used to seal the powder filling port 121 to prevent the developer from leaking.

[0068] Continue to refer to Figure 6 and Figure 7As shown, the second end 12 also includes a support member 123 and a second bearing 124. The support member 123 can be fixedly mounted on the box body 10 by means of screws or the like. The support member 123 includes a first mounting portion 1231. The first mounting portion 1231 can be integrally formed with the support member 123 or can be provided in a split manner. The first mounting portion 1231 is used to cooperate with the separation assembly. The specific cooperation method is detailed below. The second bearing 124 can be fixedly mounted on the second end 12 by screws or other means. The second bearing 124 is provided with a second guided portion 1241 and a second forced pushing portion 1242. The interior of the first mounting portion 1231 is hollow and has a guide rail provided therein. The guide rail extends along the third direction and has openings at both ends of the extension. The developing roller 131 and the powder feeding roller are rotatably supported by the second bearing 124 at one end of the second end 12. In this embodiment, the second bearing 124 is made of a conductive material, and the second pushing portion 1242 contacts the conductive portion in the drum assembly 2 so that the second pushing portion 1242 receives the voltage output by the image forming device through the drum assembly 2, that is, the second pushing portion 1242 can be regarded as an electrode in this embodiment, receiving the external voltage and transmitting the voltage to the developing roller 131 and the powder feeding roller.

[0069] In other embodiments, in order to save the production cost of the developing box 1, the second bearing 124 is made of ordinary material, and the second bearing 124 and the electric receiving part can be separately set, and then the voltage is transmitted from the electric receiving part to the developing roller 131 and the powder feeding roller through a conductive part such as an iron sheet. In this embodiment, the second guided portion 1241 can be a hollow columnar portion, which can cooperate with the developing roller shaft of the developing roller 131 near the second end 12 to prevent the developing roller 131 from directly contacting and rotating relative to the developing box 1, causing wear of the developing roller shaft / box body 10.

[0070] The separation assembly is used to receive the separation force applied by the separation force output member on the image forming device and transmit the separation force to the box body, so that the box body moves in a direction away from the photosensitive drum, thereby breaking contact between the developing roller 131 and the photosensitive drum 23.

[0071] Also refer to Figure 5 and Figure 7As shown, the separation assembly includes a separation force receiving member 122 and a flexible member 17. In this embodiment, the flexible member 17 is at least partially located between the first end 11 and the second end 12. The separation force receiving member 122 is mounted on a hollow guide rail within the first mounting portion 1231 along the third direction and is capable of moving up and down relative to the first mounting portion 1231 in the third direction. The separation force receiving member 122 includes a first inclined surface 1221, a first connecting post 1222, and a second inclined surface 1223. When the separation force receiving member 122 is mounted on the first mounting portion 1231, the first inclined surface 1221 is located away from the developing roller 131 in the second direction, and its normal distance from the fifth end 15 of the developing cartridge 1 gradually decreases from rear to front. The second inclined surface 1223 is located closer to the developing roller 131 in the third direction when the separation force receiving member 122 is mounted on the first mounting portion 1231, and its normal distance from the developing roller 131 gradually decreases from bottom to top. The first connecting column 1222 is located on a side of the separation force receiving member 122 close to the first inclined surface 1221 and is a columnar portion extending in the first direction.

[0072] In this embodiment, the separation assembly further includes a transmission member 113, which is mounted on a hollow internal guide rail within the second mounting portion 1112. The transmission member 113 is capable of moving up and down in a third direction relative to the second mounting portion 1112 within the second mounting portion 1112. When the transmission member 113 is mounted within the second mounting portion 1112, a first elastic member 114 is mounted between the transmission member 113 and the second mounting portion 1112. Specifically, when the transmission member 113 moves downward in the third direction relative to the second mounting portion 1112, the first elastic member 114 is compressed. When the first elastic member 114 releases its elastic force, the transmission member 113 is capable of moving upward in the third direction relative to the second mounting portion 1112. A second connecting post (not shown) is provided on the transmission member 113 and is disposed at the bottom of the transmission member 113.

[0073] One end of the flexible member 17 is connected to the separation force receiving member 122 through the first connecting column 1222, and the other end of the flexible member 17 is connected to the bottom of the transmission member 113 through the second connecting column. When the developing box 1 and the drum assembly 2 are in a natural state (i.e., working state), the flexible member 17 is in a state of no force and straightened. Specifically, at the first end 11, the flexible member 17 bypasses the force column 1111 and is connected to the transmission member 113, i.e., the flexible member 17 is located below the force column 1111 in the third direction.

[0074] Furthermore, the flexible member 17 is not easily deformed when subjected to force, that is, the flexible member can be a steel wire rope, nylon rope, etc. As long as the flexible member 17 has a certain strength and will not be stretched and lengthened when subjected to force, the specific material is not limited here.

[0075] like Figures 8-10As shown in the figure, the specific method of separating the drum and roller of the developing box of this embodiment is as follows: when the image forming device applies the first separation force F1 to the first inclined surface 1221 along the second direction, the first separation force F1 generates a second force F2 downward in the third direction under the action of the first inclined surface 1221, and the separation force receiving member 122 moves downward along the first mounting portion 1231 under the action of the second force F2, so that the second inclined surface 1223 abuts against the abutting portion 222 on the drum assembly 2. Since the drum assembly 2 is stationary, the abutting portion 222 generates a reaction force on the separation force receiving member 122, thereby causing the side of the developing box 1 close to the second end 12 to rotate with the part where the developing roller 131 is still in contact with the photosensitive drum 23 as the fulcrum, that is, the developing roller 131 is partially separated from the photosensitive drum 23. While the separation force receiving member 122 continues to move downward under the action of the second force F2, the separation force receiving member 122 drives the flexible member 17 to move together through the first connecting column 1222, that is, the flexible member 17 on the developing box 1 moves from left to right. At this time, at the first end 11, the flexible member 17 that is turned through the force column 1111 will generate a third force F3 downward along the third direction on the transmission member 113. The transmission member 113 moves downward along the third direction under the action of the third force F3, and the first elastic member 114 is compressed. In this embodiment, the axis parallel to the first axis in the first direction and passing through the contact point of the separation force receiving member 122 is set as the first parallel line L1, and the axis parallel to the first axis in the first direction and passing through the point where the flexible member 17 is connected to the first end 11 is set as the second parallel line L2. The first parallel line L1 and the second parallel line L2 have a first distance H1 in the second direction, that is, the line between the point where the separation force receiving member 122 contacts the abutment 222 and the point where the transmission member 113 is connected to the flexible member 17 forms a certain angle with the first direction. At the same time, the second parallel line L2 is closer to the first axis than the first parallel line L1. Therefore, after the flexible member 17 at the first end 11 is subjected to force to generate the second force F2, it will generate a fourth force F4 backward in the second direction when it bypasses the force column 1111. Under the action of the fourth force F4, the developing box 1 rotates around the point where the separation force receiving member 122 contacts the abutment 222, and the developing roller 131 is completely separated from the photosensitive drum 23.

[0076] Furthermore, along the first direction, the point where the flexible member 17 contacts the separation force receiving member 122 does not coincide with the projection of the point where the flexible member 17 is connected to the first end 11, and the point where the flexible member 17 contacts the first end 11 is closer to the developing roller 131 than the point where the flexible member 17 contacts the separation force receiving member 122.

[0077] When the image forming device no longer applies the first separation force F1 to the developing box 1, the first elastic member 114 releases its accumulated elastic force, causing the transmission member 113 to move upward in the third direction, thereby driving the flexible member 17 to move from left to right. The flexible member 17 moving from left to right drives the separation force receiving member 122 to move upward in the third direction at the second end 12, that is, after the drum and roller separation of the developing box 1 is completed, the elastic member 114 assists the separation assembly to return to the position before the drum and roller separation.

[0078] Example 2

[0079] Compared with the first embodiment, the movement direction of the separation force receiving member in this embodiment is different from that in the first embodiment and the present embodiment does not have a transmission member. The rest of the structure and separation process are exactly the same as those in the first embodiment.

[0080] like Figure 11-14 As shown, in this embodiment, a first mounting portion 1231 is provided on the second end 12. The first mounting portion 1231 is hollow and has a track in the second direction, with openings at both ends of the track. The separation force receiving member 122 is installed in the internal guide rail of the first mounting portion 1231 and can move back and forth in the second direction relative to the developer cartridge 1. In the third direction, a buckle 161 is provided on the sixth end 16 of the developer cartridge 1. One end of the flexible member 17 is connected to the separation force receiving member 122, and the other end is connected to the first end 11 via the buckle 161. Specifically, a groove 1114 is provided on the collar portion 1113 on the first protective cover 111. The flexible member 17 extends into the through hole through the groove 1114 and is connected to the collar portion 1113.

[0081] In this embodiment, when the separation force is applied to the first inclined surface 1221, the first inclined surface does not generate a component force along the third direction. Therefore, when the separating member applies the first separation force F1 to the first inclined surface 1221 along the second direction, the separation force receiving member 122 is driven to move forward along the second direction. At this time, the second inclined surface 1223 on the separation force receiving member 122 abuts against the abutting portion 222 on the drum assembly 2, so that the developing cartridge 1 rotates around the contact point between the developing roller 131 and the photosensitive drum 23, that is, the developing roller 131 and the photosensitive drum 23 are in contact. The photosensitive drum 23 is partially separated. At the same time, the separation force receiving member 122 moving in the second direction drives the flexible member 17 to move. The flexible member 17 applies a backward force in the second direction to the first end 11 through the collar portion 1113, which is the fourth force F4. That is, under the action of the fourth force F4, the developing box 1 rotates around the point where the separation force receiving member 122 contacts the abutment portion 222, so that the developing roller 131 is completely separated from the photosensitive drum 23. The specific separation process is exactly the same as that in Example 1 and will not be elaborated on here.

[0082] Furthermore, the buckle 161 can also be set on the fourth end 14 of the developer box 1, that is, one end of the flexible member 17 is connected to the separation force receiving member 122 and bypasses the fourth end 14 of the developer box 1, and the other end of the flexible member 17 is connected to the driving part 40. In this way, when the flexible member 17 is driven by the separation force receiving member 122, the fourth force F4 transmitted to the driving part 40 points to the fourth end 14, which makes it easier to separate the drum roller at the first end of the developer box 1.

[0083] Example 3

[0084] In this embodiment, compared with the second embodiment, the separation force receiving member is arranged at the first end, that is, the force receiving process is opposite to that of the second embodiment, but the separation process is basically the same as that of the second embodiment.

[0085] like Figure 15-18 As shown, in this embodiment, the drum assembly 2 is further provided with a separation portion 212 on the first side 21. The separation portion 212 has a force receiving surface 2121 and a force transmitting surface 2122. In the third direction, the force transmitting surface 2122 is located above the force receiving surface 2121. In this embodiment, the separation force receiving member is a flexible member 17. A first fixing portion 1123 for fixing the flexible member 17 is provided on the assembly 112 located at the first end 11 (similar to the second mounting portion 1112 in the first embodiment). The first fixing portion 1123 has a recess for accommodating the force transmitting surface 2122. The bottom wall of the recess can be configured as an abutment surface. The flexible member 17 is connected to the two side walls of the recess, so that the connection between the first fixing portion 1123 and the flexible member forms a force receiving portion. Within the recess, the flexible member 17 is spaced apart from the bottom wall of the recess by a distance H2 in the second direction. At the second end 12 , the developing cartridge 1 is provided with a fixing bracket 125 , and the fixing bracket 125 is provided with a second fixing portion 1251 for connecting with the flexible member 17 .

[0086] Specifically, when the force receiving surface 2121 of the separation portion 212 receives the second separation force F5 applied by the image forming device, the separation portion 212 rotates clockwise, causing the force transmitting surface 2122 to rotate toward the recess and abut against the flexible member 17. Since the flexible member 17 and the recess on the first fixing portion 1123 are spaced apart by a distance H2, the flexible member first receives the second separation force F5 and moves from left to right in the first direction, thereby generating a sixth force F6 on the second end 12. The sixth force F6 acts on the second fixing portion 1251 on the fixing bracket 125, driving the second end 12 to rotate around the point where the flexible member 17 contacts the force transmitting surface 2122, that is, the developing roller 131 at the second end 12. First, it is separated from the photosensitive drum 23. When the force transmission surface 2122 contacts the flexible part 17 and rotates toward the first fixed part 1123 by a distance that is the same as the spacing H2, the force transmission surface 2122 abuts against the first fixed part 1123. At this time, the force transmission surface 2122 continues to rotate, exerting a reaction force on the first fixed part 1123, pushing the first fixed part 1123 to move, thereby driving the developing box to move, so that the developing roller 131 at the first end 11 of the developing box 1 is separated from the photosensitive drum 23. At this time, the developing roller 131 is completely separated from the photosensitive drum 23. At the same time, its force-bearing process is exactly opposite to that of Example 2, but its separation process is basically the same as that of Example 2, and no further details will be given here.

[0087] In the present application, a separation force receiving member is provided at the second end / first end of the developing box, and a flexible member is used to connect the separation portion and the first end / second end of the developing box. The separation force receiving member at the second end / first end receives the separation force and moves, driving the flexible member to move together, and transferring the separation force from the second end / first end to the first end / second end, thereby completely separating the developing roller from the photosensitive drum. Such a structure eliminates the need for the developing box to provide a component at the first end / second end for receiving the separation force applied by the image forming device at the first end / second end, thereby reducing the number of components of the developing box, lowering costs, and simplifying the separation process.

[0088] Example 4

[0089] The structure of the developing box of this embodiment is basically the same as that of the developing box of the above embodiment. The difference is that the structure of the separation component is different. In this embodiment, the separation force receiving member 122 and the transmission member 113 are both arranged at the second end 12.

[0090] like Figure 19 and Figure 20As shown, a support member 123 is provided at the second end 12. Both the separation force receiving member 122 and the transmission member 113 are movably supported by the support member 123. The separation force receiving member 122 includes a first inclined surface 1221 and a second inclined surface 1223, respectively located at the two ends of the separation force receiving member 122. The support member 123 includes a first mounting portion 1231, which is hollow and has a track along the second direction. The second end 12 is also provided with a first guide rail portion 126. The first guide rail portion 126 extends in the same direction as the second mounting portion. The first guide rail portion 126 and the second mounting portion combine to form a limiting channel. The separation force receiving member 122 is disposed within the limiting channel and guides the sliding direction of the separation force receiving member 122. In this embodiment, a linear guide rail is preferred; in other embodiments, a curved guide rail may be used.

[0091] The transmission member 113 is movably mounted on the first mounting portion 1231 and includes a third inclined surface 1131. The third inclined surface 1131 extends in a direction intersecting the second direction and the third direction. In this embodiment, the transmission member 113 is capable of abutting against the abutting portion 222 on the drum assembly 2.

[0092] The developing box also includes a first elastic member 114. In this example, the first elastic member 114 is arranged at the second end 12. The first elastic member 114 interacts with the transmission member 113 and is preferably located between the transmission member 113 and the bottom of the first mounting portion 1231.

[0093] The developing box 1 is installed to the drum assembly 2, and the two are installed together in the image forming device. When the image forming device does not output the separation force, the pushing assembly receives the pushing force applied by the force applying assembly, so that the developing roller 131 maintains contact with the photosensitive drum 23, and the separation force receiving member 122 and the transmission member 113 do not move relative to the box body 10. When the image forming device starts to output the first separation force F1, the first inclined surface 1221 of the separation force receiving member 122 receives the separation force, causing the separation force receiving member 122 to move forward relative to the box body 10, and the second inclined surface 1223 abuts against the third inclined surface 1131 on the transmission member 113, causing the transmission member 113 to move downward relative to the box body 10, and the first elastic member 114 is compressed and accumulates elastic force, and the transmission member 113 abuts against the abutment portion 222 and slides relative to the abutment portion 222. Since the extension direction of the abutment portion 222 intersects with the third direction and the second direction, the abutment portion 222 applies a reaction force to the abutment surface 332 during the sliding abutment between the transmission member 113 and the abutment portion 222, that is, the seventh force F7 (the same as the fourth force F4 in the previous text), causing the box body 10 to move relative to the photosensitive drum 23, thereby separating the developing roller 131 from the photosensitive drum 23.

[0094] When the image forming device stops outputting the separation force, the transmission member 113 moves upward relative to the box body 10 under the elastic force of the first elastic member 114 , and the transmission member 113 drives the separation force receiving member 122 to move in the opposite direction, and the separation assembly is reset.

[0095] Example 5

[0096] The structure of the developing box of this embodiment is basically the same as that of the developing box of embodiment 4. The main difference is that in this embodiment, there is a flexible part between the separation force receiving part and the transmission part in the second direction. The rest of the structure is exactly the same, and the separation process is also exactly the same.

[0097] like Figure 21 As shown, in this embodiment, a first guide rail portion 126 is provided on the second end 12. The first guide rail portion 126 is preferably in the shape of a curved groove. The separating force receiving member 122 includes a first connecting portion 1224 and a first guided portion 1225. The first guided portion 1225 protrudes from the separating force receiving member 122 in a first direction. The first guided portion 1225 is inserted into the first guide rail portion 126 so that the separating force receiving member 122 is supported by the cassette body 10. The movement direction of the separating force receiving member 122 is guided by the first guide rail portion 126. The first connecting portion 1224 is in the shape of a hole and is located at the end of the separating force receiving member 122 facing the developing roller 131.

[0098] The transfer member 113 includes a second connecting portion 1132, a second guided portion 1133, and a third inclined surface 1131. The second connecting portion 1132 is in the form of a hole extending in the third direction. A second guide rail portion 127 is provided on the second bearing 124. The second guide rail portion 127 is a guide rail protrusion extending in the third direction, and the second guide rail portion 127 is used to mount the transfer member 113. The second guided portion 1133 is in the form of a groove extending in the third direction. The second guide rail portion 127 is embedded in the second guided portion 1133 to guide the movement direction of the transfer member 113. The third inclined surface 1131 is used to abut against the drum assembly 2, and further abut against the abutment portion 222 on the drum assembly 2.

[0099] The two ends of the flexible member 17 are respectively connected to the first connecting portion 1224 and the second connecting portion 1132. In the second direction, the flexible member 17 is located between the separation force receiving member 122 and the transmission member 113, and the transmission member 113 is closer to the third end 13 than the separation force receiving member 122. In the third direction, the transmission member 113 is closer to the sixth end 16 than the separation force receiving member 122.

[0100] A first elastic member 114 and a second elastic member 116 are further provided at the second end 12 . The first elastic member 114 acts on the separation force receiving member 122 , and the second elastic member 116 acts on the transmission member 113 .

[0101] like Figure 22 As shown, when the image forming device starts to output the first separation F1, the separation force receiving member 122 receives the first separation force F1, causing the separation force receiving member 122 to move forward relative to the box body 10 along the first guide rail portion 126. A third track 1232 is further provided on the support member 123. The third track 1232 is arc-shaped and is used to limit the flexible member 17. The separation force receiving member 122 drives the flexible member 17 to bend under the guidance of the third track 1232 to convert the forward separation force into a downward separation force along the third direction. The flexible member 17 transmits the separation force to the transmission member 113, causing the transmission member 113 to move relative to the housing 10 in the third direction along the second guide rail portion 127. The third inclined surface 1131 contacts the abutting portion 222 and moves relative thereto. The abutting portion 222 exerts a reaction force on the transmission member 113, causing the transmission member 113 to transmit the reaction force to the housing 10, causing the housing 10 to overcome the thrust force under the reaction force and move relative to the photosensitive drum 23, thereby separating the developing roller 131 from the photosensitive drum 23. The first elastic member 114 and the second elastic member 116 are both compressed and accumulate elastic force. The separation process is the same as that of the fourth embodiment. The only difference is that the separation force receiving member 122 drives the transmission member 113 via the flexible member 17, unlike the fourth embodiment, where the separation force receiving member 122 and the transmission member 113 are directly contacted and driven. The rest of the separation process is identical and will not be described in detail here.

[0102] In other embodiments, the other end of the flexible member 17 is directly connected to the second end 12 of the box body 10, and the flexible member is in a "U" shape with the opening toward the fourth end 14. When the separation force receiving member 122 applies a separation force to the flexible member 17, the flexible member 17 applies a separation force to the second end 12, causing the box body 10 to move relative to the drum assembly 2. In this embodiment, the drum and roller separation can be achieved without setting the transmission member 113.

[0103] This embodiment converts the forward separation force into a downward separation force through a bendable rope to prevent the hard block from moving unsmoothly or getting stuck directly when making a curved movement, thereby ensuring the stable realization of the developer box function.

[0104] 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 detachably mounted on a drum assembly of an image forming device, characterized in that: The developing box includes: The box body has a first end and a second end in the first direction, a third end and a fourth end in the second direction, and a fifth end and a sixth end in the third direction; a developing roller rotatable about a first axis extending in a first direction; a power receiving portion rotatable about a second axis extending in a first direction and located at the first end; a storage medium storing information of the developing cartridge; an electrical contact surface capable of being electrically connected to the storage medium; A separation assembly, configured to receive a separation force applied by an image forming device to separate the developing cartridge from the photosensitive drum of the drum assembly, comprising: a separating force receiving member capable of receiving a separating force applied by the image forming device; A flexible member has one end connected to the separation force receiving member. When receiving the separation force, the separation force receiving member can change the direction of the separation force through the flexible member to move the developing box relative to the drum assembly.

2. The developing cartridge according to claim 1, wherein At least a portion of the flexible member is located at the second end.

3. The developing cartridge according to claim 2, wherein: The separation force receiving member is arranged at the second end, and can move relative to the box body after receiving the separation force, and drive the flexible member to move relative to the box body.

4. The developing cartridge according to claim 3, wherein: The second end is provided with a third track, the third track is arc-shaped, and the flexible member moves along the third track.

5. The developing cartridge according to claim 4, wherein: The flexible member abuts against the second end to enable the second end to move relative to the drum assembly.

6. The developing cartridge according to claim 3, wherein: The separation component further includes a transmission member, which is arranged at the second end. The other end of the flexible member is connected to the transmission member, and the flexible member drives the transmission member to move so that the transmission member abuts against the drum component.

7. The developing cartridge according to claim 1, wherein: The flexible member is at least partially located between the first end and the second end.

8. The developing cartridge according to claim 7, wherein: The separation force receiving member abuts against the drum assembly to move the second end relative to the drum assembly; The other end of the flexible member is connected to the first end, and the separation force receiving member enables the first end to move relative to the drum assembly through the flexible member.

9. The developing cartridge according to claim 8, wherein: In the first direction, the point where the separation force receiving member and the flexible member are connected does not coincide with the projection of the point where the flexible member is connected to the first end, and in the second direction, the point where the flexible member is connected to the first end is closer to the developing roller than the point where the separation force receiving member and the flexible member are connected.

10. The developing cartridge according to claim 7, wherein: The separation force receiving member is provided at the first end, and the separation force receiving member is a protrusion or the flexible member.

Images