A process cartridge and a developing cartridge

Abstract

The embodiment of the application provides a processing box and a developing box, and belongs to the technical field of imaging. The developing box is detachably installed on a photosensitive box of an imaging device. The imaging device or the photosensitive box is provided with a force applying device. The developing box comprises a developing unit and a developing roller. The developing unit comprises a developing support. The developing unit has a working part for abutting against the force applying device. The developing roller is rotationally connected with the developing support. The working part is used for bearing a first acting force applied by the force applying device to push the developing roller towards the photosensitive box. The working part is also used for being out of contact with the force applying device or for generating a second acting force between the working part and the force applying device. The second acting force is smaller than the first acting force. The embodiment of the application reduces the load borne by the developing unit in a second state of stopping development, and is beneficial to reducing the deformation of the developing unit.

Description

[0001] Cross-references to related applications

[0002] This application is based on and claims priority to Chinese Patent Application No. 202422150605.0, filed on September 2, 2024, entitled “A Processing Box, a Developing Box and an Imaging Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of imaging technology, and more particularly to a processing cartridge and a developing cartridge. Background Technology

[0004] Imaging equipment can be a photocopier, electronic photo printer, fax machine, or word processing device, etc. In related technologies, the photoreceptor and photosensitive holder are rotatably connected, and the developing holder of the developing unit is used to move relative to the photosensitive holder so that the developing roller can move closer to or away from the photoreceptor. The developing unit bears a large load when developing is stopped, which may cause deformation of the developing unit. Utility Model Content

[0005] In view of this, embodiments of this application aim to provide a processing cartridge and a developing cartridge to reduce the large load borne by the developing unit when developing is stopped, and to reduce the deformation of the developing unit.

[0006] To achieve the above objectives, a first aspect of this application provides a developing cartridge, which is detachably mounted on the photosensitive cartridge of an imaging device. The imaging device or photosensitive cartridge is provided with a force-applying device. The developing cartridge includes:

[0007] A developing unit, including a developing bracket, the developing unit having a working part for contacting the force-applying device;

[0008] The developing roller is rotatably connected to the developing support.

[0009] The working part is used to bear the first force applied by the force-applying device to push the developing roller toward the photosensitive cell. The working part is also used to disengage from the force-applying device or to generate a second force with the force-applying device, the second force being less than the first force.

[0010] In some embodiments, the developing unit further includes:

[0011] A switching assembly has a mounting portion disposed on the developing bracket to move with the developing bracket, and a working portion formed in the switching assembly for switching the position of the working portion relative to the developing bracket. The working portion is in a first position to put the processing cartridge in a first state, and the working portion is in a second position to put the processing cartridge in a second state.

[0012] In some embodiments, the working part rotates at least relative to the developing holder to switch between the first position and the second position.

[0013] In some embodiments, the switching assembly includes:

[0014] A first switcher is mounted on the developing stand, the first switcher being rotatable at least relative to the developing stand, and the working part is formed in the first switcher;

[0015] A first driving device is used to drive the first switcher to rotate so as to drive the working part to rotate, and the first driving device and / or the first switcher are formed with the mounting part.

[0016] In some embodiments, the first switch is rotatably connected to the developing holder, the mounting portion is formed in the first switch, and the first driving device includes:

[0017] A transmission gear is fitted onto the developing roller so that the developing roller rotates following the transmission gear teeth;

[0018] A drive unit is mounted on the developing bracket. The drive unit has drive teeth that mesh with the transmission gear. The drive unit is used to drive the first switcher to rotate.

[0019] In some embodiments, the driving unit includes:

[0020] A drive gear is rotatably connected to the developing bracket, and the drive teeth are formed in the drive gear;

[0021] A first driver is used to provide power for the rotation of the drive gear;

[0022] A clutch, at least partially rotatably connected to the developing bracket, the clutch having an input tooth and an output tooth, the input tooth engaging with the drive tooth;

[0023] The switching gear has switching teeth for meshing with the output teeth. The central angles corresponding to the switching teeth at both ends of the circumferential direction of the switching gear are less than 360 degrees. The switching gear is connected to the first switcher to drive the first switcher to rotate.

[0024] In some embodiments, the first switch includes:

[0025] A first switching member, wherein the mounting portion is formed on the first switching member, the mounting portion is rotatably connected to the developing bracket, and the first driving device drives the first switching member to rotate;

[0026] The second switching member is rotatably connected to the first switching member. The working part is formed in the second switching member. One of the second switching member and the developing bracket has a first elongated hole. The other of the second switching member and the developing bracket has a second support column. The second support column passes through the first elongated hole.

[0027] The second elastic element is connected to the second switching element and the developing bracket respectively. The elastic force of the second elastic element is used to drive the second switching element to rotate at least relative to the developing bracket so that the working part is in the first position.

[0028] In some embodiments, the developing unit further includes a second switcher having a switching section movable relative to the developing bracket to switch between a third position and a fourth position, the third position being used to place the processing cartridge in a first state and the fourth position being used to place the processing cartridge in a second state;

[0029] Alternatively, the imaging device includes a processing cartridge having a first state capable of developing and a second state where developing is stopped. The processing cartridge includes a photosensitive cartridge, which includes a photosensitive support and a photosensitive element rotatably connected to the photosensitive support. The developing support is movable relative to the photosensitive support. When the processing cartridge is in the first state, the working part of the developing unit abuts against the force-applying device. When the processing cartridge is in the first state, the working part is used to bear a first force applied by the force-applying device to push the developing roller toward the photosensitive element. When the processing cartridge is in the second state, the working part is used to disengage from the force-applying device or to generate a second force with the force-applying device.

[0030] In some embodiments, the switching unit is translated relative to the developing bracket to switch between a third position and a fourth position.

[0031] A second aspect of this application provides a processing box having a first state capable of development and a second state where development is stopped, the processing box comprising:

[0032] A photosensitive box includes a photosensitive bracket and a photosensitive element rotatably connected to the photosensitive bracket;

[0033] In any of the above embodiments, the developing cartridge is movable relative to the photosensitive holder;

[0034] The force-applying device applies a first force to the working part when the processing cartridge is in a first state to push the developing roller toward the photoreceptor. When the processing cartridge is in a second state, the force-applying device disengages from the working part or the force between the force-applying device and the working part is a second force, which is less than the first force.

[0035] In the developing cartridge of this application embodiment, since the force-applying device is no longer in contact with the working part or the second force is less than the first force, the force on the developing unit in the state of stopped developing is less than the first force or even almost unaffected by the force of the force-applying device. This reduces the load borne by the developing unit in the second state of stopped developing, which is beneficial to reducing the deformation of the developing unit. Attached Figure Description

[0036] Figure 1 This is an assembly diagram of a photosensitive cartridge and a developing cartridge according to an embodiment of this application. The diagram shows the developing roller pushing against the photosensitive body in a first state. The first distance is not shown in the diagram. The working part shown in the diagram rotates relative to the developing bracket. The first switcher includes a rotating shaft and a cam.

[0037] Figure 2 This is an assembly diagram of a force-applying device and a developing cartridge according to an embodiment of this application. The diagram shows the developing roller pushing against the photoreceptor in a first state. The diagram shows a first distance. The working part shown in the diagram rotates relative to the developing support. The first switcher includes a rotating shaft and a cam.

[0038] Figure 3 This is an assembly diagram of a force-applying device and a developing cartridge according to an embodiment of this application. The diagram shows the force-applying device disengaging from the working part in a second state. The diagram shows a second distance. The working part shown in the diagram rotates relative to the developing bracket. The first switcher includes a rotating shaft and a cam.

[0039] Figure 4 This is an assembly diagram of a developing cartridge and a fourth driving device according to an embodiment of the present application. The diagram shows the fourth driving device for driving the separator. The working part shown in the diagram rotates relative to the developing bracket. The first switcher includes a rotating shaft and a cam.

[0040] Figure 5 This is a schematic diagram of the structure of a developing cartridge according to an embodiment of this application. The working part shown in the figure rotates relative to the developing bracket, and the first switcher includes a rotating shaft and a cam.

[0041] Figure 6 This is an exploded view of a developing cartridge according to an embodiment of this application. The working part shown in the figure rotates relative to the developing support, and the first switcher includes a rotating shaft and a cam.

[0042] Figure 7 for Figure 6An enlarged view of location A;

[0043] Figure 8 This is an assembly diagram of a developing cartridge, a force application device, and a photoreceptor according to an embodiment of this application. The working part shown in the diagram rotates relative to the developing bracket. The first switcher includes a first switching element and a second switching element. The working part shown in the diagram is in a first position.

[0044] Figure 9 This is an assembly diagram of a developing cartridge, a force application device, and a photoreceptor according to an embodiment of this application. The working part shown in the diagram rotates relative to the developing bracket. The first switcher includes a first switching element and a second switching element. The working part shown in the diagram is in the second position.

[0045] Figure 10 This is an exploded view of a developing cartridge according to yet another embodiment of this application;

[0046] Figure 11 for Figure 10 An enlarged view at position B;

[0047] Figure 12 This is an assembly diagram of a developing cartridge, a force application device, and a photosensitive body according to an embodiment of this application. In the diagram, the switching part of the second switcher is in the third position, the processing cartridge is in the first state, and the switching part is translated relative to the developing bracket.

[0048] Figure 13 This is an assembly diagram of a developing cartridge, a force application device, and a photoreceptor according to an embodiment of this application. In the diagram, the switching part of the second switcher is in the fourth position, the processing cartridge is in the second state, and the switching part is translated relative to the developing bracket.

[0049] Figure 14 This is a schematic diagram of the structure of a developing cartridge according to an embodiment of this application, showing the assembly relationship between the second switcher and the developing bracket;

[0050] Figure 15 for Figure 14 A magnified view at position C in the middle;

[0051] Figure 16 This is a schematic diagram of the structure of a second switch according to an embodiment of this application;

[0052] Figure 17 This is an assembly diagram of a developing cartridge, a force application device, and a photosensitive body according to an embodiment of this application. In the diagram, the switching part of the second switcher is in the third position, the processing cartridge is in the first state, and the switching part rotates relative to the developing bracket.

[0053] Figure 18 This is an assembly diagram of a developing cartridge, a force application device, and a photosensitive body according to an embodiment of this application. In the diagram, the switching part of the second switcher is in the fourth position, the processing cartridge is in the second state, and the switching part rotates relative to the developing bracket.

[0054] Figure 19 This is an assembly diagram of a developing cartridge, a force application device, and a photosensitive element according to an embodiment of this application. The diagram shows the relationship between the rotation center of the second switcher, the rotation center of the developing roller, and the rotation center of the photosensitive element.

[0055] Figure 20 This is an assembly diagram of the force application device and the photosensitive bracket according to an embodiment of this application;

[0056] Figure 21 for Figure 20 A magnified view at position D in the middle;

[0057] Figure 22 This is an exploded view of the force application device and photosensitive bracket according to an embodiment of this application;

[0058] Figure 23 for Figure 22 A magnified view at position E in the middle;

[0059] Figure 24 This is a schematic diagram of the structure of a developing cartridge according to an embodiment of this application, showing the state in which the second switcher is separated from the developing bracket;

[0060] Figure 25 This is a schematic diagram of the structure of a developing cartridge according to an embodiment of this application, showing a conductive component with a working part;

[0061] Figure 26 This is an assembly diagram of a powder discharge blade, a powder feeding roller, a developing roller, and a force application device according to an embodiment of this application.

[0062] Figure label:

[0063] 1. Photosensitive cartridge; 11. Photosensitive holder; 111. Holder body; 112. Insulating sleeve; 2. Photosensitive element; 3. Developing cartridge; 31. Developing unit; 311. Working section; 312. Developing holder; 3121. First guide post; 3122. Second guide post; 3124. Conductive component; 31241. First output section; 31242. Second output section; 31243. Third output section; 313. Switching assembly; 3131. Safety device Assembly; 314, Powder discharge knife; 3141, Blade; 3142, Knife holder; 315, Powder feeding roller; 3132, First switcher; 31321, Rotating shaft; 31322, Cam; 908, First switching element; 9081, Actuating boss; 909, Second switching element; 910, First elongated hole; 911, Second support column; 912, Second elastic element; 3133, First drive device; 901, Transmission gear; 902, Drive unit Yuan; 903, drive gear; 904, drive tooth; 906, clutch; 9061, input tooth; 9062, output tooth; 9063, first clutch gear; 90631, first boss; 9064, second clutch gear; 90641, second boss; 9065, first bracket; 90651, first support column; 9066, first elastic element; 9067, separator; 90671, target elongated hole; 90672, split 90673, guide slope; 90674, retaining tooth; 907, switching gear; 9071, switching tooth; 913, swing arm; 32, developing roller; 4, force application device; 41, actuator; 42, third elastic element; 61, switching part; 62, second switcher; 63, second drive device; 64, second elongated hole; 65, third elongated hole; 661, protruding post; 7, power supply element; 8, fourth drive device; 801, connecting post. Detailed Implementation

[0064] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed descriptions in the specific implementation should be understood as explanations of the purpose of this application and should not be regarded as undue limitations on this application.

[0065] In related technologies, when the processing cartridge is in the first state, the developing unit is pushed by the force-applying device, causing the developing roller to press against the photoreceptor, and the developing unit bears a large initial force from the force-applying device. When the processing cartridge stops developing, a corresponding force is applied to the developing unit to disengage the developing roller from the photoreceptor, and the force-applying device is further compressed, applying a force to the developing unit that is greater than the initial force. In the state where the processing cartridge has stopped developing, the developing unit is subjected to a large force, resulting in a significant load on the developing unit, which may cause deformation of the developing unit.

[0066] In view of this, embodiments of this application provide an imaging device, which includes a device body and a processing box installed on the device body.

[0067] The processing box is a structure used to form a visible toner image.

[0068] For example, the toner image can be a black and white image or a color image.

[0069] For example, the imaging device may be a photocopier, an electronic photo printer, a fax machine, or a word processing device, etc.

[0070] For the processing box in this embodiment of the application, please refer to [link / reference]. Figures 1 to 26 The processing cartridge has a first state where development is possible and a second state where development is stopped. The processing cartridge includes a photosensitive cartridge 1, a developing cartridge 3, and a force application device 4. The photosensitive cartridge 1 includes a photosensitive support 11 and a photosensitive element 2 rotatably connected to the photosensitive support 11. The developing cartridge 3 includes a developing unit 31 and a developing roller 32. The developing unit 31 has a working section 311 and includes a developing support 312 for movement relative to the photosensitive support 11. The developing roller 32 is rotatably connected to the developing support 312. When the processing cartridge is in the first state, the force application device 4 applies a first force to the working section 311 to push the developing roller 32 toward the photosensitive element 2. When the processing cartridge is in the second state, the force application device 4 disengages from the working section 311, or the force between the force application device 4 and the working section 311 becomes a second force, which is less than the first force.

[0071] For example, the photoreceptor 2 can be a photosensitive drum.

[0072] For example, when the processing cartridge is in the second state, the force application device 4 can disengage from the working part 311, and the force application device 4 almost no longer applies force to the developing unit 31.

[0073] For example, when the processing box is in the second state, the force application device 4 can be the second force between the working part 311 and the working part 311. The force application device 4 is not completely separated from the working part 311, and there is a force between the force application device 4 and the working part 311, but this force is reduced to a certain extent, and the second force is less than the second force.

[0074] The state in which the processing cartridge can develop is the first state.

[0075] The second state refers to the state where the processing cartridge stops developing. As long as the processing cartridge stops developing, it is in the second state regardless of whether the processing cartridge is powered on or not, or whether the imaging device is turned on.

[0076] For example, the developing holder 312 is rotatably connected to the photosensitive holder 11.

[0077] For example, the developing holder 312 is mounted on the photosensitive holder 11, and the developing holder 312 can be translated relative to the photosensitive holder 11.

[0078] For example, the developing bracket 312 is movably mounted on the main body of the device.

[0079] For example, please refer to Figure 1 The force application device 4 can be installed on the photosensitive bracket 11.

[0080] For example, please refer to Figure 1 The force application device 4 can be installed on the photosensitive bracket 11.

[0081] For example, please refer to Figures 20-23 The force application device 4 is movably mounted on the photosensitive bracket 11.

[0082] For example, the force application device 4 can be connected to the photosensitive bracket 11.

[0083] For example, the force application device 4 can be integrally formed with the photosensitive bracket 11. The photosensitive bracket 11 is a structure for supporting the photosensitive element 2.

[0084] In this embodiment, since the force-applying device 4 is out of contact with the working part 311 or the second force is less than the first force, the force on the developing unit 31 in the state of stopped developing is less than the first force or even almost unaffected by the force of the force-applying device 4, which reduces the load borne by the developing unit 31 in the second state of stopped developing, and helps to reduce the deformation of the developing unit 31.

[0085] In some embodiments, please refer to Figures 1 to 11 The developing unit 31 also includes a switching assembly 313, which has a mounting part 3131. The mounting part 3131 is disposed on the developing bracket 312 to move with the developing bracket 312. The switching assembly 313 is used to switch the position of the working part 311 relative to the developing bracket 312.

[0086] For example, the mounting part 3131 is rotatably connected to the developing bracket 312.

[0087] For example, please refer to Figures 1 to 11 The working part 311 is formed from the switching assembly 313.

[0088] In some embodiments, please refer to Figures 1-3 , Figure 8 and Figure 9 The working part 311 is in the first position to put the processing box in the first state, and the working part 311 is in the second position to put the processing box in the second state.

[0089] In this embodiment, the position of the working part 311 relative to the developing bracket 312 is switched by the switching assembly 313, thereby changing the position of the working part 311 relative to the developing bracket 312, thereby reducing the force on the developing unit 31 when the processing cartridge is in the second state of stopped developing, reducing the load on the developing unit 31, and alleviating the deformation of the developing unit 31.

[0090] In some embodiments, please refer to Figures 1-3 , Figure 8 and Figure 9 The working part 311 rotates at least relative to the developing bracket 312 to switch between a first position and a second position.

[0091] It should be noted that rotation and translation are both types of movement. Movement can be rotation, translation, or a combination of rotation and translation.

[0092] In this embodiment, the working part 311 achieves position switching by rotation, thereby switching the processing box between the first state and the second state.

[0093] In some embodiments, please refer to Figures 1 to 11 The switching assembly 313 includes a first switcher 3132. The first switcher 3132 is mounted on the developing stand 312 and is rotatable at least relative to the developing stand 312.

[0094] For example, please refer to Figures 1 to 11 The working part 311 is formed in the first switcher 3132.

[0095] In this embodiment, the first switcher 3132 is installed on the developing bracket 312, so that the developing bracket 312 can provide support for the moving first switcher 3132, and the first switcher 3132 can switch relatively smoothly.

[0096] In some embodiments, please refer to Figures 1 to 11 The switching assembly 313 also includes a first drive device 3133. The first drive device 3133 is used to drive the first switcher 3132 to rotate so as to drive the working part 311 to rotate. The first drive device 3133 and / or the first switcher 3132 are formed with a mounting part 3131.

[0097] The first drive unit 3133 can be installed on the developing stand 312 and / or the main body of the equipment.

[0098] For example, the mounting part 3131 may be formed on the first switch 3132, and the first drive device 3133 may be mounted on the developing bracket 312.

[0099] For example, the mounting part 3131 may be formed on the first switcher 3132, and the first drive device 3133 may be mounted on the photosensitive bracket 11.

[0100] For example, the mounting part 3131 may be formed on the first switch 3132, and the first drive device 3133 may be mounted on the main body of the device. In this embodiment, the first drive device 3133 provides power for the rotation of the first switch 3132.

[0101] For example, please refer to Figures 5-7 , Figure 10 and Figure 14 The first driving device 3133 is located at one end of the developing roller along the axial direction of the developing roller 32.

[0102] For example, please refer to Figures 5-7 , Figure 10 and Figure 14 The developing roller 32 is provided with a first driving device 3133 at both ends.

[0103] It is understood that the structure of the switching assembly 313 is not limited. Exemplarily, both the mounting part 3131 and the working part 311 can be formed in the first drive device 3133. Exemplarily, the first drive device 3133 can be a cylinder, the mounting part 3131 is formed in the cylinder body and disposed on the developing bracket, and the working part 311 is formed in the piston rod of the cylinder. The extension and retraction of the cylinder piston rod drives the working part 311 to switch between a first position and a second position, and the mounting part 3131 pushes the developing bracket 312 and the developing roller 32 toward the photoreceptor 2.

[0104] In some embodiments, please refer to Figures 1 to 11 The first switcher 3132 is rotatably connected to the developing bracket 312, and the mounting part 3131 is formed in the first switcher 3132.

[0105] In some embodiments, please refer to Figures 1 to 7 The first driving device 3133 includes a transmission gear 901 and a driving unit 902. The transmission gear 901 is sleeved on the developing roller 32 so that the developing roller 32 rotates following the transmission gear teeth. The driving unit 902 is mounted on the developing bracket 312 and has driving teeth 904 that mesh with the transmission gear 901. The driving unit 902 is used to drive the first switch 3132 to rotate.

[0106] In this embodiment, the first switcher 3132 and the developing roller 32 share the drive unit 902, which reduces costs.

[0107] It is understood that the structure of the first drive device 3133 is not limited. For example, the developing roller 32 and the first switcher 3132 are driven by different drive structures.

[0108] In some embodiments, please refer to Figures 1 to 7 The drive unit 902 includes a drive gear 903, a first driver, a clutch 906, and a switching gear 907. The drive gear 903 is rotatably connected to the developing holder 312, and a drive tooth 904 is formed on the drive gear 903. The first driver provides power for the rotation of the drive gear 903. The clutch 906 is at least partially rotatably connected to the developing holder 312, and has an input tooth 9061 and an output tooth 9062, with the input tooth 9061 meshing with the drive tooth 904. The switching gear 907 has a switching tooth 9071 for meshing with the output tooth 9062, and the central angles corresponding to the switching teeth 9071 at both circumferential ends of the switching gear 907 are less than 360 degrees. The switching gear 907 is connected to a first switcher 3132 to drive the first switcher 3132 to rotate.

[0109] For example, the first driver is mounted on the developing holder 312.

[0110] In this embodiment, the power of the drive gear 903 can be transmitted to the first switcher 3132 through the clutch 906. The power transmission of the drive gear 903 to the first switcher 3132 can be disconnected through the clutch 906. The position switching of the working part 311 on the developing unit 31 can be better controlled through the clutch 906.

[0111] In some embodiments, please refer to Figures 1 to 7 The central angles corresponding to the switching teeth 9071 at both ends of the circumference of the switching gear 907 are acute angles; or, the switching gear 907 is fan-shaped, and the central angle of the fan-shaped switching gear 907 is an acute angle.

[0112] In this embodiment, the acute angle arrangement allows the switching gear 907 to separate from the output gear 9062 after rotating through a certain angle.

[0113] In some embodiments, please refer to Figures 1 to 7The clutch 906 includes a first clutch gear 9063, a second clutch gear 9064, a first bracket 9065, and a first elastic element 9066. The first clutch gear 9063 is rotatably connected to the developing bracket 312, and an input tooth 9061 is formed on the first clutch gear 9063. The second clutch gear 9064 moves axially along the first clutch gear 9063 to engage or disengage with the first clutch gear 9063, and an output tooth 9062 is formed on the second clutch gear 9064. The first bracket 9065 is connected to the developing bracket 312, and a first support post 90651 is formed on the first bracket 9065. The second clutch gear 9064 is sleeved on the first support post 90651 and is rotatable relative to the first support post 90651 and can move axially relative to the first support post 90651. A first elastic element 9066 is sleeved on a first support column 90651. The first elastic element 9066 contacts a first bracket 9065 and a second clutch gear 9064. The elastic force of the first elastic element 9066 is used to engage the second clutch gear 9064 with the first clutch gear 9063. A separator 9067 is used to at least partially move between the first clutch gear 9063 and the second clutch gear 9064 to disengage the first clutch gear 9063 and the second clutch gear 9064.

[0114] For example, please refer to Figures 1 to 7 The processing box also includes a fourth drive unit 8, which drives the separator 9067 to move in a direction perpendicular to the axial direction of the first clutch gear 9063.

[0115] For example, the separator 9067 is movably mounted on the developing stand 312.

[0116] For example, the separator 9067 is movably mounted on the photosensitive bracket 11.

[0117] For example, the separator 9067 is movably mounted on the main body of the device.

[0118] In this embodiment, the separation of the first clutch gear 9063 and the second clutch gear 9064 is achieved by the movement of the separator 9067, thereby disconnecting the power transmission from the drive gear 903 to the first switcher 3132. The first clutch gear 9063 and the second clutch gear 9064 are engaged by the elastic force of the first elastic member 9066.

[0119] In some embodiments, please refer to Figures 1 to 7The first clutch gear 9063 has a first boss 90631 on the side facing the second clutch gear 9064, and the second clutch gear 9064 has a second boss 90641 on the side facing the first clutch gear 9063 for engaging with the first boss 90631. The separator 9067 has a target elongated hole 90671, the length direction of which is arranged to intersect with the axial direction of the first clutch gear 9063. The first boss 90631 and / or the second boss 90641 pass through the target elongated hole 90671.

[0120] In this embodiment, the engagement and disengagement of the first clutch gear 9063 and the second clutch gear 9064 are achieved by the engagement and disengagement of the first boss 90631 and the second boss 90641, and the first boss 90631 and / or the second boss 90641 are avoided by the target elongated hole 90671.

[0121] In some embodiments, please refer to Figures 1 to 7 The separator 9067 has a separation boss 90672, which is located on one side of the separator 9067 along the axial direction of the first clutch gear 9063. The separation boss 90672 is formed with a guide ramp 90673. The separator 9067 moves along an axial direction perpendicular to the first clutch gear 9063 so that the separation boss 90672 moves into or out between the first clutch gear 9063 and the second clutch gear 9064 through the guide ramp 90673.

[0122] In this embodiment, the separation boss 90672 is guided by the guide ramp 90673 to move between the first clutch gear 9063 and the second clutch gear 9064, so as to separate the first clutch gear 9063 and the second clutch gear 9064 and disconnect the power transmission from the drive gear 903 to the first switcher 3132.

[0123] In this embodiment, please refer to Figures 1 to 7 The separator 9067 has a retaining tooth 90674, and the processing box also includes a second elastic member 912. One end of the second elastic member 912 contacts the separator 9067. The second elastic member 912 is used to provide elastic force so that the retaining tooth 90674 is engaged with the switching tooth 9071 of the first switcher 3132 when the working part 311 is in the first position.

[0124] For example, the other end of the second elastic member 912 may contact the developing bracket 312, and the developing bracket 312 supports the second elastic member 912.

[0125] For example, the other end of the second elastic member 912 can contact the photosensitive bracket 11, and the second elastic member 912 can be supported by the photosensitive bracket 11.

[0126] For example, the other end of the second elastic member 912 may contact the device body, and the device body supports the second elastic member 912.

[0127] In this embodiment, by maintaining the meshing of the tooth 90674 and the switching tooth 9071 to prevent the switching gear 907 from rotating, the working part 311 of the developing unit 31 can be better maintained in the first position.

[0128] In some embodiments, please refer to Figures 1 to 7 The first switcher 3132 includes a rotating shaft 31321 and a cam 31322. A mounting portion 3131 is formed on the rotating shaft 31321 and is rotatably connected to the developing holder 312. A first drive device 3133 drives the rotating shaft 31321 to rotate. The cam 31322 is connected to the rotating shaft 31321 to follow the rotation of the rotating shaft 31321.

[0129] For example, please refer to Figures 1 to 7 The working part 311 is formed on the cam 31322.

[0130] For example, please refer to Figures 1 to 7 The switching gear 907 and the rotating shaft 31321 can be connected by a key.

[0131] For example, please refer to Figures 1 to 7 The switching gear 907 and the rotating shaft 31321 can be integrally formed.

[0132] In this embodiment, the first driving device 3133 drives the rotating shaft 31321 to rotate the cam 31322 to switch the position of the working part 311 of the developing unit 31.

[0133] In some embodiments, please refer to Figures 8-11 The first switcher 3132 includes a first switching element 908, a second switching element 909, and a second elastic element 912. A mounting portion 3131 is formed on the first switching element 908 and is rotatably connected to the developing bracket 312. The second switching element 909 is rotatably connected to the first switching element 908. One of the second switching element 909 and the developing bracket 312 has a first elongated hole 910, and the other of the second switching element 909 and the developing bracket 312 has a second support post 911, which passes through the first elongated hole 910. The second elastic element 912 is connected to both the second switching element 909 and the developing bracket 312. The elastic force of the second elastic element 912 is used to drive the second switching element 909 to rotate at least relative to the developing bracket 312 so that the working part 311 is in a first position.

[0134] For example, please refer to Figures 8-11 The working part 311 is formed in the second switching part 909.

[0135] For example, please refer to Figures 8-11 A connecting post 801 is formed on the developing bracket 312, and the first switching member 908 is rotatably connected to the connecting post 801.

[0136] For example, please refer to Figures 8-11 The first drive device 3133 drives the first switching component 908 to rotate.

[0137] In this embodiment, the second switching member 909 is rotated by the pulling force of the second elastic member 912 to drive the working part 311 to rotate to the first position. The first driving device 3133 drives the first switching member 908 to rotate, thereby driving the second switching member 909 to move. The second switching member 909 overcomes the elastic force of the second elastic member 912 and drives the working part 311 from the first position to the second position.

[0138] In some embodiments, please refer to Figures 8-11 The first switching member 908 has an execution boss 9081 formed on the side of the first switching member 908 away from the developing bracket 312 along the axial direction of the first switching member 908.

[0139] In some embodiments, please refer to Figures 8-11 The first driving device 3133 drives the execution boss 9081 to move so as to drive the first switching member 908 to rotate.

[0140] In this embodiment of the application, the first driving device 3133 drives the execution boss 9081 to move so as to realize the rotation of the first switching member 908.

[0141] In some embodiments, please refer to Figures 8-11 The first drive device 3133 includes a swing arm 913 and a second driver. The second driver drives the swing arm 913 to rotate, so that the swing arm 913 drives the actuating boss 9081 to move.

[0142] For example, the swing arm 913 is rotatably connected to the photosensitive bracket 11. The second driver is mounted on the photosensitive bracket 11.

[0143] For example, the swing arm 913 is rotatably connected to the main body of the equipment. The second drive is mounted on the main body of the equipment.

[0144] In this embodiment, the second driver drives the swing arm 913 to rotate so that the swing arm 913 drives the execution boss 9081 to move, thereby causing the execution boss 9081 to drive the first switching member 908 to rotate.

[0145] In some embodiments, please refer to Figures 8-11 The working part 311 is translated at least relative to the developing bracket 312 to switch between a first position and a second position.

[0146] For example, the first driving device 3133 can be a cylinder, and the first switcher 3132 may not be provided. The mounting part 3131 is formed in the cylinder body of the cylinder and is mounted on the developing bracket 312. The position of the working part 311 on the piston rod is switched by the extension and retraction of the piston rod.

[0147] For example, the working part 311 is formed on the piston rod of the cylinder.

[0148] In this embodiment, the position switching of the working part 311 is achieved by translation.

[0149] In some embodiments, please refer to Figure 2 and Figure 3 When the working part 311 is in the first position, the distance between the mounting part 3131 and the force application device 4 is the first distance, and when the working part 311 is in the second position, the distance between the mounting part 3131 and the force application device 4 is the second distance, and the first distance is greater than the second distance.

[0150] For example, the developing roller 32 presses against the photoreceptor 2.

[0151] For example, please refer to Figure 2 and Figure 3 The first distance is D1, the second distance is D2, and D1>D2.

[0152] In this embodiment, the larger first distance allows the working part 311 at the first position to push the mounting part 3131 to move the developing bracket 312 away from the force application device 4, thereby pushing the developing roller 32 toward the photoreceptor 2. The smaller second distance helps to reduce the force between the developing roller 32 and the photoreceptor 2, or even prevents them from contacting each other, thus reducing the force between the working part 311 and the force application device 4, or even preventing them from contacting each other.

[0153] In some embodiments, please refer to Figures 1 to 11 The first drive unit 3133 is installed on the developing bracket 312.

[0154] In this embodiment, the first driving device 3133 can move with the developing bracket 312, and the first driving device 3133 can be driven in good coordination with the first switch 3132 installed on the developing bracket 312.

[0155] In some embodiments, the first driving device 3133 may be mounted on the photosensitive bracket 11.

[0156] In some embodiments, the first drive unit 3133 may be mounted on the main body of the device.

[0157] In some embodiments, please refer to Figures 12-19The developing unit 31 also includes a second switcher 62, and the processing cartridge also includes a second drive device 63 for driving the second switcher 62 to move relative to the developing bracket 312. The second switcher 62 has a switching part 61 located on the side of the force application device 4 facing the working part 311. The switching part 61 can move relative to the developing bracket 312 to switch between a third position and a fourth position. When the processing cartridge is in the first state, the switching part 61 is disengaged from the force application device 4 in the third position or the force between the switching part 61 and the force application device 4 in the third position is a third force. When the processing cartridge is in the second state, the force between the switching part 61 and the force application device 4 in the fourth position is a fourth force. The fourth force is greater than the third force.

[0158] In this embodiment, the second drive device 63 drives the second switcher 62 to move relative to the developing bracket 312 to switch the position of the switching part 61, so that the switching part 61 switches between the third position and the fourth position. The force of the switching part 61 in the third position is small, and the force application device 4 mainly applies a first force to the working part 311 to push the developing roller 32 toward the photosensitive body 2. The force of the switching part 61 in the fourth position is large, and the switching part 61 applies a force to the force application device 4 to reduce the force applied by the force application device 4 to the working part 311 or even to disengage the force application device 4 from the working part 311, thereby reducing the load borne by the force-applying developing unit 31 in the second state and helping to reduce the deformation of the developing unit 31.

[0159] In some embodiments, please refer to Figures 12-19 The second drive unit is used to drive the second switcher to translate.

[0160] In some embodiments, referring to the figures, the switching unit 61 translates relative to the developing bracket 312 to switch between a third position and a fourth position.

[0161] In this embodiment, the switching unit 61 achieves position switching by translation.

[0162] In some embodiments, please refer to Figures 12-19 The second switcher 62 is installed on the developing holder 312 and / or the photosensitive holder 11, and the second drive device 63 is installed on the photosensitive holder 11.

[0163] In this embodiment, since the second driving device 63 is mounted on the photosensitive bracket 11, the reaction force applied by the force-applying device 4 to the second driving device 63 via the second switcher 62 is borne by the photosensitive bracket 11. During the process where the second driving device 63 drives the second switcher 62 to move, causing the switching part 61 to move the force-applying device 4, the force exerted by the force-applying device 4 on the working part 311 is reduced or even disengaged from the working part 311, reducing the load borne by the force-applying developing unit 31 in the second state, which helps to reduce the deformation of the developing unit 31. The second driving device 63 providing power and the second switcher 62 for switching are manufactured and installed separately, and the second switcher 62 can be arranged according to actual needs.

[0164] It is understood that the specific installation method of the second switch 62 and the second drive device 63 is not limited. Exemplarily, the second switch 62 can be installed on the main body of the device. Exemplarily, the second drive device 63 can be installed on the main body of the device.

[0165] In some embodiments, please refer to Figures 12-19 One of the second switcher 62 and the developing bracket 312 has a second elongated hole 64, and the other of the second switcher 62 and the developing bracket 312 has a first guide post 3121, which is located within the second elongated hole 64 and is capable of translation along the length direction of the second elongated hole 64; and / or, one of the second switcher 62 and the developing bracket 312 has a third elongated hole 65, and the other of the second switcher 62 and the developing bracket 312 has a second guide post 3122, which is located within the third elongated hole 65 and is capable of translation along the length direction of the third elongated hole 65.

[0166] In this embodiment, the first guide post 3121 moves within the second elongated hole 64 and / or the second guide post 3122 moves within the third elongated hole 65 to guide the movement direction of the second switcher 62, so that the second switcher 62 maintains translation as much as possible.

[0167] In some embodiments, please refer to Figures 16-19 The second drive device 63 is used to drive the second switcher 62 to rotate.

[0168] In some embodiments, please refer to Figures 16-19 The switching unit 61 rotates relative to the developing bracket 312 to switch between the third position and the fourth position.

[0169] In this embodiment, the switching unit 61 switches positions by rotation.

[0170] In some embodiments, please refer to Figures 16-19 The second switcher 62 is rotatably connected to the photosensitive bracket 11.

[0171] In this embodiment, the second switcher 62 is rotatably connected to the photosensitive bracket 11, and the photosensitive bracket 11 supports the rotation of the second switcher 62.

[0172] It is understood that the installation method of the second switch 62 is not limited. For example, the second switch 62 can be rotatably connected to the main body of the device.

[0173] In some embodiments, please refer to Figures 16-19 The developing bracket 312 is rotatably connected to the second switcher 62, and the central axis of rotation of the second switcher 62 and the central axis of rotation of the developing bracket 312 relative to the second switcher 62 are arranged coaxially.

[0174] For example, please refer to Figures 16-19 The central axis of rotation of the second switcher 62 is the central axis of rotation of the second switcher 62 relative to the photosensitive bracket 11.

[0175] For example, please refer to Figures 16-19 The second switcher 62 has a protrusion 661 that is rotatably connected to the main body of the equipment, and the central axis of rotation of the second switcher 62 can be the central axis of the protrusion 661.

[0176] In this embodiment, the force applied by the rotation center of the second switch 62 to the developing bracket 312 does not affect the rotation of the developing bracket 312.

[0177] In some embodiments, please refer to Figure 19 The distance between the rotation center of the second switcher 62 and the rotation center of the photoreceptor 2 is the third distance; the distance between the rotation center of the second switcher 62 and the rotation center of the developing roller 32 is the fourth distance; and the distance between the rotation center of the developing roller 32 and the rotation center of the photoreceptor 2 is the fifth distance. The sum of the fourth and fifth distances is greater than the third distance. The working part 311 is located between the force application device 4 and the rotation center of the developing roller 32.

[0178] For example, please refer to Figure 19 The third distance is D3, the fourth distance is D4, the fifth distance is D5, and D4+D5>D3.

[0179] For example, the rotation center of the second switcher 62 is the rotation center of the second switcher 62 relative to the photosensitive bracket 11.

[0180] For example, the working part 311, the force application device 4, and the developing roller 32 are on the same side of the rotation center line of the second switcher 62 and the rotation center line of the photoreceptor 2.

[0181] In this embodiment, since the sum of the fourth distance and the fifth distance is greater than the third distance, when the force application device 4 applies a first force to the working part 311 to push the developing roller 32 toward the photoreceptor 2, the developing roller 32 can apply a larger squeezing force to the photoreceptor 2.

[0182] In some embodiments, the developing holder 312 is rotatably connected to the photosensitive holder 11.

[0183] In this embodiment, the force of the rotation center of the second switcher 62 and the force of the rotation center of the developing bracket 312 are mainly applied to the photosensitive bracket 11, reducing the mutual influence between the second switcher 62 and the developing bracket 312, and preventing the developing roller 32 from being pushed towards the photosensitive body 2 during the process of the second switcher 62 pushing the force application device 4 away from the working part 311.

[0184] For example, the developing bracket 312 can also be mounted on the main body of the device.

[0185] In some embodiments, please refer to Figures 12-19 The working part 311 is formed on the developing bracket 312.

[0186] For example, the working part 311 is integrally formed with the developing bracket 312.

[0187] In this embodiment, the working part 311 is almost fixed on the developing bracket 312, and the structure is simple.

[0188] In some embodiments, the second switcher 62 is movably mounted on the developing stand 312.

[0189] In some embodiments, the second switcher 62 may be mounted on the photosensitive bracket 11.

[0190] In some embodiments, the second switch 62 may be mounted on the device body.

[0191] In some embodiments, the developing holder 312 is movably mounted on the photosensitive holder 11.

[0192] In some embodiments, the developing holder 312 is rotatably connected to the photosensitive holder 11.

[0193] In some embodiments, the developing holder 312 is mounted on the photosensitive holder 11 and the developing holder 312 is translated relative to the photosensitive holder 11.

[0194] In some embodiments, the developing holder 312 is movably mounted on the device body.

[0195] In some embodiments, the force-applying device may be installed on the main body of the equipment.

[0196] In some embodiments, please refer to Figure 1 , Figures 20-24 The force application device 4 can be installed on the photosensitive bracket 11.

[0197] In some embodiments, please refer to Figure 2 , Figure 3 , Figure 12 and Figure 23 The force-applying device 4 includes an actuator 41 and a third elastic member 42. The actuator 41 is used to apply a first force to the working part 311, and the actuator 41 is movably mounted on the photosensitive bracket 11. The third elastic member 42 abuts against the actuator 41 and the photosensitive bracket 11 respectively.

[0198] In this embodiment, the third elastic member 42 is compressed to apply force to the actuator 41, so that the actuator 41 applies force to the working part 311.

[0199] In some embodiments, the first elastic element 9066 may be a spring.

[0200] In some embodiments, the second elastic element 912 may be a spring.

[0201] In this embodiment, the third elastic element 42 can be a spring.

[0202] For the developer cartridge 3 in this embodiment, please refer to [link / reference]. Figures 1 to 11 The developing cartridge 3 includes a developing unit 31 and a developing roller 32. The developing unit 31 has a working part 311 for contacting the force application device 4 in a first state. The developing unit 31 includes a developing support 312 and a switching assembly 313. The developing support 312 is movable relative to the photosensitive support 11. The switching assembly 313 has a mounting part 3131 disposed on the developing support 312 to follow its movement. The switching assembly 313 is used to switch the position of the working part 311 relative to the developing support 312, so that the working part 311 switches between a first position and a second position. The developing roller 32 is rotatably connected to the developing support 312.

[0203] For example, referring to the figure, the working part 311 is formed in the switching assembly 313.

[0204] For the developer cartridge 3 in this embodiment, please refer to [link / reference]. Figures 12-19 The developing cartridge 3 includes a developing unit 31 and a developing roller 32. The developing unit 31 has a working part 311 for abutting against the force application device 4 in a first state. The developing unit 31 includes a developing support 312 and a second switcher 62. The developing support 312 is movable relative to the photosensitive support 11. The second switcher 62 has a switching part 61 that is movable relative to the developing support 312 to switch between a third position and a fourth position. The third position is used to put the processing cartridge in the first state, and the fourth position is used to put the processing cartridge in the second state.

[0205] For example, please refer to Figure 19 The switching unit 61 is located on the side of the developing roller 32 facing the working part 311 along the radial direction of the developing roller 32.

[0206] For example, please refer to Figure 17 and Figure 18 The working part 311 is formed on the developing bracket 312.

[0207] In some embodiments, when the mounting part 3131 is in the first position, the distance between the mounting part 3131 and the working part 311 is a sixth distance, the arrangement direction of the mounting part 3131 and the working part 311 is a preset direction when the mounting part 3131 is in the first position, and the distance between the mounting part 3131 and the working part 311 along the preset direction when the mounting part 3131 is in the second position is a seventh distance, and the sixth distance is greater than the seventh distance.

[0208] In this embodiment, since the sixth distance is greater than the seventh distance, when the working part 311 is in the first position, the distance between the working part 311 and the mounting part 3131 along the preset direction is larger. The reaction force of the force application device 4 is applied to the mounting part 3131 through the working part 311 to drive the developing bracket 312 and the developing roller 32 to move towards the photosensitive element 2, so that the processing cartridge is in a first state where it can be developed. When the working part 311 is in the second position, the distance between the working part 311 and the mounting part 3131 along the preset direction is smaller. The force between the force application device 4 and the working part 311 decreases or the force application device 4 disengages from the working part 311, so that the processing cartridge is in a second state where development is stopped.

[0209] In some embodiments, please refer to Figures 20-26 When the processing cartridge is in the first state, the force-applying device 4 applies a first force to the working part 311 to push the developing roller 32 toward the photoreceptor 2. The force-applying device 4 is at least partially electrically connected to the working part 311 to supply power to the developing cartridge 3. When the processing cartridge is in the second state, the force-applying device 4 disengages from the working part 311 to de-energize the developing cartridge 3.

[0210] For example, the force application device 4 is electrically connected to the working part 311 to supply power to the developing cartridge 3, which can generate a developing bias voltage between the developing roller 32 and the photoreceptor 2, so as to supply the toner in the developing cartridge 3 to the photoreceptor 2.

[0211] For example, the force application device 4 is electrically connected to the working part 311 to supply power to the developing cartridge 3, which can generate a supply bias voltage between the developing roller 32 and the powder feeding roller 315, for supplying toner on the powder feeding roller 315 to the developing roller 32.

[0212] For example, the main body of the imaging device supplies power to the developing cartridge 3 through the force application device 4 and the working part 311.

[0213] In this embodiment, when the processing cartridge is in the first state, the force application device 4 is connected to the working part 311 of the developing unit 31 to supply power to the developing cartridge 3. When the processing cartridge is in the second state, the force application device 4 is disconnected from the working part 311 of the developing unit 31 to de-energize the developing cartridge 3. This prevents leakage current inside the processing cartridge from being conducted to the developing cartridge 3, avoids the impact of leakage current inside the processing cartridge on the developing cartridge 3, and improves the imaging quality of the developing cartridge 3.

[0214] In some embodiments, please refer to Figures 20-26 The developing unit 31 also includes a conductive element 3124, and the working part 311 is formed on the conductive element 3124.

[0215] For example, the conductive element 3124 having the working part 311 can be connected to the switching assembly 313.

[0216] For example, the conductive element 3124 having the working part 311 can be connected to the first switch 3132.

[0217] For example, the conductive element 3124 having the working part 311 can be connected to the cam 31322.

[0218] For example, the conductive element 3124 having the working part 311 can be connected to the second switching element 909.

[0219] For example, the conductive element 3124 having the working part 311 can be connected to the developing bracket 312.

[0220] For example, the working part 311 formed in the switching assembly 313 can be electrically connected to the force application device 4.

[0221] For example, the working part 311 formed in the first switch 3132 can be electrically connected to the force application device 4.

[0222] For example, the working part 311 formed on the cam 31322 can be electrically connected to the force application device 4.

[0223] For example, the working part 311 formed in the second switching member 909 can be electrically connected to the force application device 4.

[0224] For example, the working part 311 formed on the developing bracket 312 can be electrically connected to the force application device 4.

[0225] In this embodiment, the developing cartridge 3 is powered by the conductive element 3124. The conductive element 3124 can be flexibly arranged on the corresponding structure according to actual needs so that the working part 311 and the force application device 4 can repeatedly contact and disconnect.

[0226] In some embodiments, the developing bracket 312 may be an insulating element.

[0227] In this embodiment, the developing roller 32 and other components of the developing unit 31 are mounted on an insulated developing bracket 312, which prevents the developing bracket 312 from misleading the two components. The conductive element 3124 installed on the developing bracket 312 can more accurately supply power to the components in the developing cartridge 3.

[0228] It is understood that the material of the developing bracket 312 is not limited to an insulating material. For example, the material of the developing bracket 312 can be a conductive material.

[0229] In some embodiments, please refer to Figures 20-23 The processing box also includes a power take-off component 7. The side of the power take-off component 7 facing away from the force-applying device 4 is used for electrical connection with the main body of the equipment, and the side of the power take-off component 7 facing the force-applying device 4 is electrically connected to the force-applying device 4.

[0230] For example, please refer to Figures 21-23 The power-generating component 7 is installed on the photosensitive bracket 11.

[0231] For example, please refer to Figures 21-23 The power-generating component 7 is connected to the photosensitive bracket 11.

[0232] For example, the power-generating component 7 can be installed on the device body.

[0233] For example, the force-applying device 4 is movable relative to the power-taking component 7. During the movement of the force-applying device 4 relative to the power-taking component 7, it can still be electrically connected to the force-applying device 4 in a good manner, and the power-taking component 7 can conveniently supply power to the force-applying device 4.

[0234] For example, please refer to Figures 21-23 The force application device 4 is movably installed on the photosensitive bracket 11, which is made of insulating material.

[0235] For example, please refer to Figures 21-23 The photosensitive bracket 11 includes a bracket body 111 and an insulating sleeve 112 installed on the bracket body 111, and the force application device 4 is installed on the insulating sleeve 112.

[0236] For example, the material of the actuator 41 of the force application device 4 is a conductive material, and the actuator 41 of the force application device 4 is a conductor.

[0237] For example, please refer to Figures 21-23 The outer side of the power taking component 7 is the input terminal for electrical connection with the main body of the equipment, and the conductive actuator 41 of the force applying device 4 is in contact with the inner side of the power taking component 7.

[0238] For example, the main body of the imaging device supplies power to the developing cartridge 3 through the power receiving component 7, the force application device 4, and the working part 311.

[0239] In this embodiment, the force-applying device 4 can be conveniently electrically connected to the main body of the imaging device via the power-taking component 7 to draw power from the main body of the imaging device. When the force-applying device 4 and the working part 311 are electrically connected, power is supplied to the developing cartridge 3 through the power-taking component 7, the force-applying device 4, and the working part 311.

[0240] In some embodiments, see 6 and Figure 26 The developing unit 31 also includes a powder discharge blade 314 and a powder feeding roller 315, and the conductive element 3124 is electrically connected to at least one of the powder discharge blade 314, the powder feeding roller 315 and the developing roller 32.

[0241] For example, please refer to Figure 26 The conductive element 3124 has a first output portion 31241, a second output portion 31242, and a third output portion 31243. The first output portion 31241 is electrically connected to the powder discharge blade 314, the second output portion 31242 is electrically connected to the roller shaft of the powder feeding roller 315, and the third output portion 31243 is electrically connected to the roller shaft of the developing roller 32.

[0242] The first output section 31241, the second output section 31242, and the third output section 31243 can be combined according to actual needs. For example, the first output section 31241 is electrically connected to the powder discharge blade 314 (blade holder 3142 or blade 3141), the second output section 31242 is electrically connected to the roller shaft of the powder feeding roller 315, and the third output section 31243 is electrically connected to the roller shaft of the developing roller 32.

[0243] For example, please refer to Figure 26 The conductive element 3124 has a second output portion 31242 and a third output portion 31243. The second output portion 31242 is electrically connected to the roller shaft of the powder feeding roller 315, and the third output portion 31243 is electrically connected to the roller shaft of the developing roller 32. The conductive element 3124 is disconnected from the powder exiting blade 314.

[0244] For example, please refer to Figure 26 A first output portion 31241 is formed on the conductive component 3124. The first output portion 31241 is electrically connected to the powder discharge blade 314 (blade holder 3142 or blade 3141). The conductive component 3124 is disconnected from the roller shaft of the powder feeding roller 315 and the roller shaft of the developing roller 32. The blade 3141 of the powder discharge blade 314 is electrically connected to the developing layer of the developing roller 32.

[0245] For example, please refer to Figure 26The conductive element 3124 has a first output portion 31241 and a second output portion 31242. The first output portion 31241 is electrically connected to the blade holder 3142 of the powder discharge blade 314. The blade holder 3142 and the blade 3141 of the powder discharge blade 314 are electrically connected. The second output portion 31242 is electrically connected to the roller shaft of the powder feeding roller 315. The conductive element 3124 is disconnected from the roller shaft of the developing roller 32. The electricity of the developing layer of the developing roller 32 comes from the blade 3141 of the powder discharge blade 314.

[0246] For example, the conductive element 3124 is fitted onto the injection-molded developing bracket 312.

[0247] In this embodiment, at least one of the powder discharge blade 314, the powder feeding roller 315, and the developing roller 32 is powered through the conductive element 3124, thereby achieving at least partial ground connection between the force application device 4 and the working part 311 to power the developing cartridge 3.

[0248] This application provides a developing cartridge; please refer to [link / reference]. Figure 25 The developing cartridge includes a developing unit 31 and a developing roller 32. The developing unit 31 has a working part 311, which is used to be electrically connected to the force application device 4 in a first state.

[0249] The above are merely preferred embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A developing cartridge, characterized in that, The developing cartridge is detachably mounted on the photosensitive cartridge of the imaging device, and the imaging device or photosensitive cartridge is provided with a force-applying device. The developing cartridge includes: A developing unit, including a developing bracket, the developing unit having a working part for contacting the force-applying device; The developing roller is rotatably connected to the developing support. The working part is used to bear the first force applied by the force-applying device to push the developing roller toward the photosensitive cell. The working part is also used to disengage from the force-applying device or to generate a second force with the force-applying device, the second force being less than the first force.

2. The developing cartridge according to claim 1, characterized in that, The developing unit further includes: A switching assembly has a mounting part disposed on the developing bracket to move with the developing bracket, and a working part formed in the switching assembly. The switching assembly is used to switch the position of the working part relative to the developing bracket. The working part is in a first position to enable the developing cartridge to develop, and the working part is in a second position to stop the developing cartridge from developing.

3. The developing cartridge according to claim 2, characterized in that, The working part rotates at least relative to the developing holder to switch between the first position and the second position.

4. The developing cartridge according to claim 3, characterized in that, The switching assembly includes: A first switcher is mounted on the developing stand, the first switcher being rotatable at least relative to the developing stand, and the working part is formed in the first switcher; A first driving device is used to drive the first switcher to rotate so as to drive the working part to rotate, and the first driving device and / or the first switcher are formed with the mounting part.

5. The developing cartridge according to claim 4, characterized in that, The first switcher is rotatably connected to the developing bracket, the mounting portion is formed in the first switcher, and the first driving device includes: A drive gear is fitted onto the developing roller so that the developing roller rotates following the drive gear; A drive unit is mounted on the developing bracket. The drive unit has drive teeth that mesh with the transmission gear. The drive unit is used to drive the first switcher to rotate.

6. The developing cartridge according to claim 5, characterized in that, The driving unit includes: A drive gear is rotatably connected to the developing bracket, and the drive teeth are formed in the drive gear; A first driver is used to provide power for the rotation of the drive gear; A clutch, at least partially rotatably connected to the developing bracket, the clutch having an input tooth and an output tooth, the input tooth engaging with the drive tooth; The switching gear has switching teeth for meshing with the output teeth. The central angles corresponding to the switching teeth at both ends of the circumferential direction of the switching gear are less than 360 degrees. The switching gear is connected to the first switcher to drive the first switcher to rotate.

7. The developing cartridge according to claim 4, characterized in that, The first switcher includes: A first switching member, wherein the mounting portion is formed on the first switching member, the mounting portion is rotatably connected to the developing bracket, and the first driving device drives the first switching member to rotate; The second switching member is rotatably connected to the first switching member. The working part is formed in the second switching member. One of the second switching member and the developing bracket has a first elongated hole. The other of the second switching member and the developing bracket has a second support column. The second support column passes through the first elongated hole. The second elastic element is connected to the second switching element and the developing bracket respectively. The elastic force of the second elastic element is used to drive the second switching element to rotate at least relative to the developing bracket so that the working part is in the first position.

8. The developing cartridge according to any one of claims 1 to 7, characterized in that, The developing unit further includes a second switcher having a switching part that is movable relative to the developing bracket to switch between a third position and a fourth position. The third position is used to put the developing cartridge in a developing state, and the fourth position is used to put the developing cartridge in a stopped developing state. Alternatively, the imaging device includes a processing cartridge having a first state capable of developing and a second state where developing is stopped. The processing cartridge includes a photosensitive cartridge, which includes a photosensitive support and a photosensitive element rotatably connected to the photosensitive support. The developing support is movable relative to the photosensitive support. When the processing cartridge is in the first state, the working part of the developing unit abuts against the force-applying device. When the processing cartridge is in the first state, the working part is used to bear a first force applied by the force-applying device to push the developing roller toward the photosensitive element. When the processing cartridge is in the second state, the working part is used to disengage from the force-applying device or to generate a second force with the force-applying device.

9. The developing cartridge according to claim 8, characterized in that, The switching unit is translated relative to the developing bracket to switch between a third position and a fourth position.

10. A processing box, characterized in that, The processing cartridge includes a first state in which development is enabled and a second state in which development is stopped. A photosensitive box includes a photosensitive bracket and a photosensitive element rotatably connected to the photosensitive bracket; The developing cartridge according to any one of claims 1 to 9, wherein the developing holder is movable relative to the photosensitive holder; The force-applying device applies a first force to the working part when the processing cartridge is in a first state to push the developing roller toward the photoreceptor. When the processing cartridge is in a second state, the force-applying device disengages from the working part or the force between the force-applying device and the working part is a second force, which is less than the first force.

Images