Developing box and processing box

Abstract

The utility model relates to a developing box which is detachably mounted in imaging equipment provided with a force application piece, the developing box comprises a box main body and a developing roller which is rotatably arranged in the box main body, and the developing roller is used for bearing a developing agent accommodated by the box main body and supplying the developing agent to a photosensitive drum outside the developing box; the developing box further comprises a chip used for storing parameter information of the developing box, the chip is provided with a box side electric contact part, and the plane where the box side electric contact part is located is not parallel to the vertical direction. In a state that the developing box is mounted on the imaging equipment, the developing roller and the photosensitive drum are in a mutually separated state before the developing box performs developing for the first time; when the developing cartridge performs developing, the force applying member applies a pushing force to the developing cartridge, and the developing roller and the photosensitive drum are converted from a state of being separated from each other to a state of being in contact with each other. According to the technical scheme, stable electric contact between the developing box and the electrophotographic imaging equipment can be realized.

Description

Technical Field

[0001] This utility model relates to the field of electrophotographic imaging technology, and in particular to a developing box and a processing box for electrophotographic imaging equipment. Background Technology

[0002] US Patent Application No. 20240192634A1 discloses a developing cartridge for an electrophotographic imaging device (hereinafter referred to as "imaging device"). The developing cartridge has a cartridge body and a fixing part. The developing cartridge also includes a cartridge-side electrical contact fixedly disposed on the fixing part. The cartridge-side electrical contact is used to store relevant information of the developing cartridge. The imaging device has a device-side electrical contact for electrical contact with the cartridge-side electrical contact, which is used to realize a communication connection between the developing cartridge and the imaging device. The cartridge-side electrical contact includes a cartridge-side electrical contact surface for electrical contact with the device-side electrical contact, and the device-side electrical contact has an electrical pin for electrical contact with the cartridge-side electrical contact surface. The two cooperate to form a communication connection. The cartridge-side electrical contact surface is set to be parallel to the direction of gravity.

[0003] However, because the device-side electrical contact portion is constructed as a cone extending toward the cartridge-side electrical contact surface, when the developing cartridge is installed in the imaging device, the cone-shaped end of the electrical contact pin makes electrical contact with the cartridge-side electrical contact surface, resulting in a small contact area and making it prone to poor electrical contact. Utility Model Content

[0004] This utility model provides a developing cartridge that employs the following technical solution to achieve stable electrical contact between the developing cartridge and the electrophotographic imaging device.

[0005] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0006] A developing cartridge is detachably mounted to an imaging device equipped with a force-applying component. The developing cartridge includes a cartridge body and a developing roller rotatably disposed within the cartridge body. The developing roller carries developer contained within the cartridge body and supplies the developer to a photosensitive drum outside the developing cartridge. The developing cartridge is characterized by further including a chip for storing developing cartridge parameter information. The chip has a cartridge-side electrical contact portion, the plane of which is not parallel to the vertical direction. When the developing cartridge is mounted to the imaging device, before initial development, the developing roller and the photosensitive drum are in a separated state. When the developing cartridge performs development, the force-applying component applies a pushing force to the developing cartridge, causing the developing roller and the photosensitive drum to transition from a separated state to a contacting state.

[0007] In some embodiments, the imaging device is further provided with an electrical contact pin, wherein the cartridge-side electrical contact portion is used to make electrical contact with the electrical contact pin; the plane in which the cartridge-side electrical contact portion is located is inclined relative to the vertical direction of the developing cartridge.

[0008] In some embodiments, the imaging device is further provided with an electrical contact pin, and the developing cartridge further includes an electrical connector for connecting the cartridge-side electrical contact portion and the electrical contact pin.

[0009] In some embodiments, the developing cartridge further includes a fixing part movably connected to the cartridge body, and the imaging device is provided with a positioning shaft; the fixing part includes a fixing part body and a positioning hole formed on the fixing part body, and the fixing part is fixed to the imaging device by cooperating with the positioning shaft through the positioning hole.

[0010] In some embodiments, the developing cartridge further includes a first elastic element disposed in a positioning hole.

[0011] In some embodiments, the fixing part further has a mating hole formed on the fixing part body, and the imaging device further includes a mating part for engaging with the mating hole; the developing cartridge further includes a second elastic member disposed in the mating hole.

[0012] In some embodiments, the fixing portion further has a mating hole formed on the fixing portion body and an extension formed extending on the fixing portion. The imaging device further includes a mating portion for engaging with the mating hole, the extension portion being disposed around the circumference of the mating hole for covering at least a portion of the circumference of the mating portion.

[0013] In some embodiments, the developing cartridge further includes a guide mechanism for maintaining the movement path of the cartridge body. The guide mechanism includes a guide portion disposed on the cartridge body and a guided portion disposed on the fixed portion. Through the cooperation of the guide portion and the guided portion, the developing roller and the photosensitive drum switch between a state of being close to each other and a state of being separated from each other.

[0014] In some embodiments, the fixing part further includes a coupling mechanism extending from the fixing part body in the installation direction, and a portion of the box body is formed as a coupling mechanism for cooperating with the coupling mechanism.

[0015] This utility model also provides a processing cartridge, which is detachably installed in an imaging device equipped with an electrical contact pin. The processing cartridge includes an accessory, a drum assembly, and a developing cartridge. The developing cartridge includes a cartridge body and a developing roller rotatably disposed within the cartridge body. The developing roller carries the developer contained within the cartridge body and supplies the developer to the photosensitive drum outside the developing cartridge. When the developing cartridge is installed in the imaging device, before the initial development, the developing roller and the photosensitive drum are in a separated state. When the developing cartridge is developing, a force-applying component applies a pushing force to the developing cartridge, and the developing roller and the photosensitive drum change from a separated state to a contacting state. The accessory is detachably installed in the developing cartridge and / or the drum assembly. The accessory includes a mounting body and a chip mounted on the mounting body. The chip is used for electrical contact with the electrical contact pin. Attached Figure Description

[0016] Figure 1A This is a perspective view of the developing cartridge involved in Embodiment 1 of this utility model.

[0017] Figure 1B It is the edge of the developing cartridge Figure 1A A sectional view taken along the AA direction.

[0018] Figure 2A This is a perspective view of the front part of the developing cartridge according to Embodiment 2 of this utility model.

[0019] Figure 2B It is the edge of the developing cartridge Figure 1A Section along the AA direction Figure 2A A sectional view.

[0020] Figure 3A This is a perspective view of the front part of the developing cartridge according to Embodiment 3 of this utility model.

[0021] Figure 3B This is an exploded view of the attachments involved in Embodiment 3 of this utility model.

[0022] Figure 4A This is a perspective view of the developing cartridge installed toward the positioning axis according to Embodiment 4 of this utility model.

[0023] Figure 4B This is a side view of the developing cartridge involved in Embodiment 4 of this utility model, viewed along the longitudinal direction.

[0024] Figure 4C This is a perspective view of the fixing part in the developing cartridge according to Embodiment 4 of this utility model.

[0025] Figure 5A This is a perspective view of the developing cartridge installed toward the positioning axis according to Embodiment 5 of this utility model.

[0026] Figure 5B This is a side view of the developing cartridge involved in Embodiment 5 of this utility model, viewed along the longitudinal direction.

[0027] Figure 5C This is an exploded view of the developing cartridge and the connecting part of the first modified structure involved in Embodiment 5 of this utility model.

[0028] Figure 5D This is a side view of the developing cartridge of the first deformed structure involved in Embodiment 5 of this utility model, viewed along the longitudinal direction.

[0029] Figure 5E This is a perspective view of the developing cartridge with the second modified structure according to Embodiment 5 of this utility model.

[0030] Figure 5FThis is a perspective view of the fixing part in the developing cartridge of the second modified structure according to Embodiment 5 of this utility model.

[0031] Figure 6A This is a perspective view of the developing cartridge involved in Embodiment 6 of this utility model.

[0032] Figure 6B This is a perspective view of the fixing part in the developing cartridge according to Embodiment 6 of this utility model.

[0033] Figure 6C This is a side view of the developing cartridge involved in Embodiment 6 of this utility model under pressure, viewed along the longitudinal direction.

[0034] Figure 6D The developing cartridge involved in Embodiment 6 of this utility model, under pressure, moves along... Figure 1A A sectional view cut along the BB direction.

[0035] Figure 6E This is a side view of the developing cartridge involved in Embodiment 6 of this utility model, viewed in the longitudinal direction, in a state where no pressure is applied.

[0036] Figure 6F The developing cartridge involved in Embodiment 6 of this utility model, when not under pressure, moves along... Figure 1A A sectional view cut along the BB direction.

[0037] Figure 7A This is a perspective view of the developing cartridge involved in Embodiment 7 of this utility model.

[0038] Figure 7B This is a perspective view of the fixing part in the developing cartridge according to Embodiment 7 of this utility model.

[0039] Figure 7C This is a side view of the developing cartridge involved in Embodiment 7 of this utility model under pressure, viewed along the longitudinal direction.

[0040] Figure 7D The developing cartridge according to Embodiment 7 of this utility model, under pressure, moves along... Figure 1A A sectional view cut along the BB direction.

[0041] Figure 7E This is a side view of the developing cartridge involved in Embodiment 7 of this utility model, viewed in the longitudinal direction, in a state where no pressure is applied.

[0042] Figure 7F The developing cartridge involved in Embodiment 7 of this utility model, when not under pressure, moves along... Figure 1A A sectional view cut along the BB direction.

[0043] Figure 8AThis is a perspective view of the front part of the developing cartridge according to Embodiment 8 of this utility model.

[0044] Figure 8B This is a side view of the developing cartridge according to Embodiment 8 of this utility model in a state where no pressure is applied. Detailed Implementation

[0045] The following detailed description, with reference to the accompanying drawings, further illustrates the structure of the developing cartridge and other aspects of this utility model.

[0046] Example 1

[0047] like Figure 1A and Figure 1B As shown, the developing cartridge 100 is detachably installed in an imaging device. The imaging device has a device-side electrical contact 91 for communicating with the developing cartridge 100. The developing cartridge 100 includes a chip 3 for storing parameter information such as the model and capacity of the developing cartridge 100. The chip has a substrate 31, a storage part (not shown), and a cartridge-side electrical contact 30. The storage part is disposed on the substrate 31 and is used to store the parameter information. The storage part is connected to the cartridge-side electrical contact 30. Through the electrical contact between the cartridge-side electrical contact 30 and the device-side electrical contact 91, the imaging device establishes a communication connection with the developing cartridge 100. Finally, the imaging device can accurately identify the relevant information of the developing cartridge 100. The developing cartridge 100 also has a cartridge body 1 and a developing roller 11 rotatably disposed in the cartridge body 1. The developing roller 11 is used to carry the developer contained in the cartridge body 1 and supply the developer to the photosensitive drum 81 outside the developing cartridge 100.

[0048] Generally, the photosensitive drum 81 is rotatably mounted in the drum assembly 800 (e.g., Figure 3A , Figure 6D As shown, the drum assembly 800 can be detachably installed into the imaging device independently of the developing cartridge 100. The drum assembly 800 can also be combined with the developing cartridge 100 to form a processing cartridge, and the processing cartridge can then be detachably installed into the imaging device. The drum assembly 800 can also be pre-fixed in the imaging device.

[0049] For clarity in the following description, the direction parallel to the mounting direction of the developing cartridge 100 to the imaging device is defined as the front-back direction, and the developing cartridge 100 is mounted rearward. The developing roller 11 has a rotation axis parallel to the front-back direction, and the direction of gravity of the developing unit is the up-down direction, which intersects the front-back direction. Taking the orientation of the developing cartridge 100 mounted to the imaging device as a reference, when viewed from front to back, the upper side of the developing cartridge 100 is the upper side, and the lower side is the lower side.

[0050] like Figure 1BAs shown, the device-side electrical contact 91 has an electrical contact pin 910 for making electrical contact with the box-side electrical contact 30. The electrical contact pin 910 extends in the front-back direction and the up-down direction, and is generally conical. It has a first side 910a and a second side 910b. The first side 910a and the second side 910b intersect at a tip 910c. At least the second side 910b is inclined relative to the up-down direction.

[0051] like Figure 1A and Figure 1B As shown, the developing cartridge 100 also includes a fixing part 2 movably connected to the cartridge body 1. The fixing part 2 is used to position the developing cartridge 100 in the imaging device. Under the weight of the cartridge body 1 and the components installed therein, the cartridge body 1 naturally remains in a fixed position. Figure 6F In the state shown, the developing roller 11 and the photosensitive drum 81 are separated from each other. When the developing cartridge 100 needs to develop, the force-applying component 94 in the imaging device applies a pushing force to the developing cartridge 100, and the cartridge body 1 moves relative to the fixed part 2, causing the developing roller 11 and the photosensitive drum 81 to change from a separated state to a contact state. At this time, the cartridge body 1 is in a state of... Figure 6D In the state shown, when the developing cartridge 100 does not require development, the force-applying component 94 no longer applies a pushing force to the developing cartridge 100, and under the weight of the cartridge body 1 and the components installed therein, the cartridge body 1 returns to its original position. Figure 6F As shown, the developing roller 11 and the photosensitive drum 81 change from a state of mutual contact to a state of mutual separation.

[0052] The fixing part 2 has a fixing part body 20 and a mounting groove 21 formed on the fixing part body 20. The mounting groove 21 is at least used to accommodate the cartridge-side electrical contact part 30. In this embodiment, the cartridge-side electrical contact part 30 is inclined in the mounting groove 21, that is, the plane where the cartridge-side electrical contact part 30 is located is no longer parallel to the vertical direction, but is inclined relative to the vertical direction. When the developing cartridge 100 is installed on the imaging device, the cartridge-side electrical contact part 30 contacts the first side 910a or the second side 910b. Compared with the cartridge-side electrical contact part 30 contacting the tip 910c, the contact area between the cartridge-side electrical contact part 30 and the electrical contact pin 910 in this embodiment is larger, so that the chip 3 / cartridge-side electrical contact part 30 and the electrical contact pin 910 form a more stable electrical contact, thereby enabling a stable communication connection to be established between the developing cartridge 100 and the imaging device.

[0053] In some embodiments, when the box-side electrical contact 30 is disposed on the substrate 31, the substrate 31 is also accommodated by the mounting groove 21, the tilt angle of which matches the tilt angle of the first side 910a or the tilt angle of the second side 910b, so that the contact area between the box-side electrical contact 30 and the first side 910a or the second side 910b is larger.

[0054] In some embodiments, the fixing part 2 further includes a positioning part 27 disposed on the fixing part body 20, and the device-side electrical contact part 91 further includes a positioned part 912 for cooperating with the positioning part 27. As the developing cartridge 100 is installed toward the imaging device, the positioning part 27 and the positioned part 912 cooperate with each other, thereby enabling the cartridge-side electrical contact part 30 and the electrical contact pin 910 to make more precise contact. It is possible that the positioning part 27 and the positioned part 912 are in a shaft-hole fit.

[0055] like Figure 1A and Figure 1B As shown, the developing cartridge 100 also includes a developing sensor 4 for detecting the amount of developing agent in the cartridge body 1. One end of the developing sensor 4 is in electrical contact with the cartridge-side electrical contact 3, and it is connected to the imaging device through the cartridge-side electrical contact 3. This helps to reduce the number of parts in the developing cartridge 100 and simplify the structure of the developing cartridge 100.

[0056] Example 2

[0057] like Figure 2A and Figure 2B As shown, the following will introduce Embodiment 2 of this application. The parts that are the same as those in Embodiment 1 will not be repeated in this embodiment. The difference from Embodiment 1 is that the chip 3 in this embodiment is electrically connected to the device-side electrical contact 90.

[0058] like Figure 2A As shown, in this embodiment, the developing cartridge 100 is further provided with an electrical connector 5 for making electrical contact with the cartridge-side electrical contact portion 30 and the device-side electrical contact portion 91, respectively. Specifically, the electrical connector 5 has a first electrical connection terminal 51 for making electrical contact with the developing-side electrical contact surface 30 and a second electrical connection terminal 52 for making electrical contact with the electrical contact pin 910. The second electrical connection terminal 52 is inclined relative to the direction of gravity.

[0059] In some implementations, such as Figure 2B As shown, the plane where the box-side electrical contact 30 is located is parallel to the installation direction / front-back direction, the box-side electrical contact 30 faces upward, the electrical connector 5 is located above the box-side electrical contact 30, and the second electrical connection terminal 52 is in electrical contact with the first side 910a or the second side 910b.

[0060] In some embodiments, the cartridge-side electrical contact portion 30 may also be configured to face downwards, with the first electrical connection terminal 51 of the electrical connector 5 in electrical contact with the developing electrical contact portion 30, and the second electrical connection terminal 52 of the electrical connector 5 in electrical contact with the first side 910a or the second side 910b of the electrical contact pin 910.

[0061] In this embodiment, the box-side electrical contact 30 and the device-side electrical contact 91 can achieve stable electrical contact through the electrical connector 5, and the box-side electrical contact 30 can also be prevented from being scratched, thereby preventing poor contact between the box-side electrical contact 30 and the device-side electrical contact 91.

[0062] Based on the inventive concept of this embodiment, the chip 3 / box side electrical contact 30 can also be configured such that when the chip 3 / box side electrical contact 30 is accommodated by the mounting groove 21, the plane on which the box side electrical contact 30 is located can be tilted relative to the front-back direction (not parallel to the up-down direction), and the box side electrical contact 30 is still in electrical contact with the device side electrical contact 91 through the electrical connector 5.

[0063] Example 3

[0064] like Figure 3A and Figure 3B As shown, the following will introduce Embodiment 3 of this application. The parts that are the same as those in the above embodiments will not be repeated in this embodiment.

[0065] like Figure 3A As shown, the processing box includes an accessory 6 detachably mounted on the developing cartridge 100 and / or drum assembly 800. The chip 3 is mounted on the mounting body 61 of the accessory 6. Therefore, it is not necessary to fix the chip 3 in the developing cartridge 100 and the drum assembly 800. Users can detachably install the accessory 6 to the developing cartridge 100 or the drum assembly 800 according to product requirements, so that a stable communication connection is established between the developing cartridge 100 / drum assembly 800 and the imaging device, which is beneficial to improving the versatility of the developing cartridge 100 and / or drum assembly 800.

[0066] For example, if the two models of developer cartridges differ only in the data stored in chip 3, or only slightly in the structure of mounting body 61, the user can make the developer cartridge compatible with both models by replacing chip 3 or designing mounting body 61 to be universal.

[0067] In some embodiments, when the accessory 6 is installed in the developing cartridge 100 or the drum assembly 800, the cartridge-side electrical contact portion 30 can directly make electrical contact with the electrical contact pin 910.

[0068] In some implementations, such as Figure 3B As shown, in addition to the mounting body 61, the accessory 6 also includes an electrical connector 5. The electrical connector 5 has a first electrical connection terminal 51 and a second electrical connection terminal 52. The first electrical connection terminal 51 is used to make electrical contact with the box-side electrical contact portion 30, and the second electrical connection terminal 52 is used to make electrical contact with the electrical contact pin 910. The setting of the electrical connector 5 can give the accessory 6 a higher degree of design freedom.

[0069] Example 4

[0070] like Figures 4A-4C As shown, the following will introduce Embodiment 4 of this application. The parts that are the same as those in the above embodiments will not be repeated in this embodiment.

[0071] like Figure 4A As shown, the fixing part 2 has a fixing part body 20 and a positioning hole 22 formed on the fixing part body 20. The imaging device is provided with a positioning shaft 92 for cooperating with the positioning hole 22. By cooperating with the positioning hole 22 and the positioning shaft 92, the fixing part 2 is fixed to the imaging device.

[0072] Specifically, such as Figure 4A , Figure 4B and Figure 4C As shown, the positioning hole 22 has a large-size portion 22a and a small-size portion 22b. Along the installation direction, the large-size portion 22a is located downstream of the small-size portion 22b, and the large-size portion 22a faces the positioning shaft 92, while the small-size portion 22b faces away from the positioning shaft 92. The size of the large-size portion 22a is larger than the diameter of the positioning shaft 92. During the installation of the developing cartridge 100, the positioning shaft 92 can smoothly enter the positioning hole 22 through the large-size portion 22a. By setting the large-size portion 22a and the small-size portion 22b to a gradually changing curved surface, the positioning shaft 92 can be smoothly guided, thereby ensuring that the developing cartridge 100 can be installed smoothly.

[0073] Example 5

[0074] like Figures 5A-5F As shown, Embodiment 5 of this application will be introduced next. The parts that are the same as those in the above embodiments will not be repeated in this embodiment.

[0075] like Figure 5A and Figure 5B As shown, the fixing part 2 has a fixing part body 20 and a positioning hole 22 formed on the fixing part body 20. The imaging device has a positioning shaft 92 for cooperating with the positioning hole 22. The fixing part 2 is positioned by cooperating with the positioning shaft 92 through the positioning hole 22. The developing cartridge 100 is also provided with a first elastic member 71. The first elastic member 71 is provided in the positioning hole 22 for interference fit with the positioning shaft 92. This prevents the fixing part 2 from tilting relative to the developing cartridge 100 after the developing cartridge 100 is installed in the imaging device. This is because the gap between the positioning hole 22 and the positioning shaft 92 in the direction of gravity is too large, which would cause the cartridge-side electrical contact part 30 to not make precise contact with the electrical contact needle 910.

[0076] Specifically, the first elastic element 71 is preferably a rubber ring, and the diameter of the first elastic element 71 in its natural state is smaller than the diameter of the positioning shaft 92. After the developing cartridge 100 is installed into the imaging device, the positioning shaft 92 causes the first elastic element 71 to undergo elastic deformation, thereby achieving an interference fit. During the process of installing the developing cartridge 100 into the imaging device, the tilt angle of the fixing part 2 is reduced.

[0077] like Figure 5C and Figure 5D As shown, the fixing part 2 also has a connecting hole 23 formed on the fixing part body 20. The imaging device also includes a connecting part 93 for cooperating with the connecting hole 23. By cooperating with the connecting hole 23 and the connecting part 93, the fixing part 2 and the cartridge body 1 can be movably connected. At this time, the developing cartridge 100 can rotate about the connecting part 93 as the rotation center.

[0078] Furthermore, the developing cartridge 100 is also provided with a second elastic element 72, which is disposed in the connecting hole 23 or the connecting part 93 for interference fit with the connecting part 93. This prevents the fixing part 2 from tilting relative to the developing cartridge 100 due to excessive gap between the connecting hole 23 and the connecting part 93 in the direction of gravity during the installation of the developing cartridge 100 toward the imaging device or after the developing cartridge 100 is installed in the imaging device. This would prevent the cartridge-side electrical contact part 30 from accurately contacting the electrical contact pin 910.

[0079] Specifically, the second elastic element 72 is preferably a rubber ring, and the diameter of the second elastic element 72 in its natural state is smaller than the diameter of the connecting part 93. After the developing cartridge 100 is installed into the imaging device, the connecting part 93 causes the second elastic element 72 to undergo elastic deformation, thereby achieving an interference fit. During the process of installing the developing cartridge 100 into the imaging device, the tilt angle of the fixing part 2 can be reduced, or in other words, the fixing part 2 can be prevented from tilting relative to the cartridge body 1. It should be noted that the frictional force generated between the second elastic element 72 and the connecting part 93 is less than the pushing force applied to the developing cartridge 100 by the force-applying element 94.

[0080] In some implementations, such as Figure 5E and Figure 5F As shown, the fixing part 2 also has an extension part 24 extending from the fixing part body 20. The extension part 24 extends in a direction parallel to the installation direction and is arranged around the circumference of the mating hole 23 to cover at least a portion of the circumference of the mating part 93. Thus, the tilt angle of the fixing part 2 relative to the developing cartridge 100 can be reduced during the process of the developing cartridge 100 being installed into the imaging device.

[0081] Example 6

[0082] like Figures 6A-6FAs shown, Embodiment 6 of this application will be introduced next. The parts that are the same as those in the above embodiments will not be repeated in this embodiment.

[0083] like Figure 6A , Figure 6B , Figure 6C , Figure 6D and Figure 6F As shown, the drum assembly 800 has a drum housing 8 and a photosensitive drum 81 rotatably disposed in the drum housing 8. The developing roller 11 supplies developer to the photosensitive drum 81, causing the electrostatic latent image on the surface of the photosensitive drum 81 to develop. The developing cartridge 100 also includes a force receiving component 13. The force applying component 94 cooperates with the force receiving component 13 to switch between a state of mutual contact and a state of mutual separation between the developing roller 11 and the photosensitive drum 81. The force receiving component 13 can be disposed on either the fixing part 2 or the cartridge body 11 in a shaft-hole fit manner.

[0084] Furthermore, the developing cartridge 100 is also provided with a guide mechanism for maintaining the movement path of the cartridge body 1. Through this guide mechanism, the developing roller 11 and the photosensitive drum 81 can stably switch between a contacting state and a separated state. The guide mechanism includes a first protrusion 12a and a second protrusion 12b extending forward on the cartridge body 11, and a first groove 25a and a second groove 25b formed on the fixing body 20. The first groove 25a engages with the first protrusion 12a, and the second groove 25b engages with the second protrusion 12b, allowing the developing cartridge 100 to move along the grooves when subjected to force. Part 12a and the second protrusion 12b have a first position and a second position. In the first position, the developing roller 11 is in contact with the photosensitive drum 81. In the second position, the developing roller 11 is separated from the photosensitive drum 81. Preferably, the first slide 25a and the second slide 25b are arc-shaped slides, and the first slide 25a and the second slide 25b are concentrically arranged. The movement path of the first protrusion 12a in the first slide 25a forms a first arc, and the movement path of the second protrusion 12b in the second slide 25b forms a second arc. The center of the first arc coincides with the center of the second arc, and the developing cartridge 100 can rotate around the center of the guide mechanism.

[0085] With the developing cartridge 100 installed in the imaging device, and before the developing cartridge 100 performs its first developing operation, the developing roller 11 and the photosensitive drum 81 are separated from each other, and the first protrusion 12a and the second protrusion 12b are in the second position; when the developing cartridge 100 needs to perform a developing operation, such as Figure 6C and Figure 6DAs shown, the force-applying component 94 applies a pushing force to the force-receiving component 13. Under the action of the pushing force, the force-receiving component 13 drives the cartridge body 1 to rotate clockwise in the direction M around the guide mechanism, thereby driving the developing roller 11 to move towards the photosensitive drum 81. The first protrusion 12a and the second protrusion 12b move from the second position to the first position, so that the developing roller 11 contacts the photosensitive drum 81.

[0086] It should be understood that "before the developing cartridge 100 performs its first developing operation" refers to each time the developing cartridge 100 is installed into the imaging equipment and before developing begins, regardless of whether the developing cartridge 100 is new or has been used before.

[0087] When the developing cartridge 100 does not need to perform developing operations, such as Figure 6E and 6F As shown, the force-applying component 94 no longer applies force to the force-receiving part 13. Under its own gravity, the cartridge body 1 rotates around the guide mechanism in the counterclockwise N direction, thereby driving the developing roller 11 to move away from the photosensitive drum 81. The first protrusion 12a and the second protrusion 12b move from the first position to the second position, realizing the separation of the developing roller 11 from the photosensitive drum 81. This can avoid the developing roller 11 from being in long-term contact with the photosensitive drum 81, which would cause irreversible deformation of the developing roller 11 or contamination of the surface of the photosensitive drum 81 by the developer.

[0088] In a variation of this embodiment, the first protrusion 12a and the first groove 25a can be interchanged, and similarly, the second protrusion 12b and the second groove 25b can also be interchanged.

[0089] Example 7

[0090] like Figures 7A-7F As shown, the following will introduce Embodiment 7 of this application. The parts that are the same as those in the above embodiments will not be repeated in this embodiment. The difference from Embodiment 6 is that the box body 1 is set to move up and down along the guide mechanism. This design is beneficial to the miniaturization of the imaging device.

[0091] like Figure 7A and Figure 7B As shown, in this embodiment, the guiding mechanism includes a protrusion 12 extending in the front-rear direction on the cartridge body 1, and a mating groove 25 formed on the fixing body 20 for engaging with the protrusion 12; the protrusion 12 also has a first position and a second position. In the first position, the developing roller 11 is in contact with the photosensitive drum 81, and in the second position, the developing roller 11 is separated from the photosensitive drum 81; preferably, the mating groove 25 is parallel to the direction of gravity, which can reduce the space required for the cartridge body 1 to move the same distance in the vertical direction.

[0092] With the developing cartridge 100 installed in the imaging device, and before the developing cartridge 100 performs its first developing operation, the developing roller 11 and the photosensitive drum 81 are separated from each other, and the protrusion 12 is in the second position; when the developing cartridge 100 performs the developing operation, such as Figure 7C and Figure 7D As shown, the force-applying component 94 applies a pushing force to the force-receiving component 13. Under the action of the pushing force, the force-receiving component 13 drives the cartridge body 1 to move in the up-down direction, thereby driving the developing roller 11 to move closer to the photosensitive drum 81. The protrusion 12 moves from the second position to the first position, so that the developing roller 11 contacts the photosensitive drum 81.

[0093] When the developing cartridge 100 does not need to perform developing operations, such as Figure 7E and 7F As shown, the force-applying component 94 no longer applies pushing force to the force-receiving part 13. The cartridge body 1 moves up and down again under its own gravity, thereby driving the developing roller 11 to move away from the photosensitive drum 81. The protrusion 12 moves from the first position to the second position, realizing the separation of the developing roller 11 from the photosensitive drum 81. This can avoid the developing roller 11 from being in long-term contact with the photosensitive drum 81, which would cause irreversible deformation of the developing roller 11 or contamination of the surface of the photosensitive drum 81 by the developer.

[0094] Similarly, the protrusion 12 and the mating groove 25 in this embodiment can also be interchanged. According to this embodiment and embodiment 6, the first protrusion 12a, the second protrusion 12b, and the protrusion 12 can be collectively referred to as the guiding part, and the first sliding groove 25a, the second sliding groove 25b, and the mating groove 25 can be collectively referred to as the guided part. The guiding part and the guided part cooperate to switch between the developing roller 11 and the photosensitive drum 81 in a state of being close to each other and a state of being separated from each other.

[0095] It should be understood that the shapes of the aforementioned grooves 25a / 25b and mating grooves 25 should not be limited to grooves. For example, the grooves 25a / 25b and mating grooves 25 can be formed into holes, as long as they can play the aforementioned guiding role.

[0096] Example 8

[0097] like Figure 8A and Figure 8B As shown, Embodiment 8 of this application will be introduced next. The parts that are the same as those in the above embodiments will not be repeated in this embodiment.

[0098] like Figure 8AAs shown, the fixing part 2 has a fixing part body 20 and a connecting mechanism formed on the fixing part body 20, the connecting mechanism extending along the installation direction; correspondingly, the developing cartridge 100 has a cartridge body 1 and a connecting mechanism formed on the cartridge body 1. By the cooperation of the connecting mechanism and the connecting mechanism, the fixing part 2 is limited, which can prevent relative displacement between the fixing part 2 and the connecting part 93 due to the gap.

[0099] Furthermore, such as Figure 8A As shown, the coupling mechanism is configured as a limiting part 26 extending from the fixing part body 20. The coupling mechanism is a part of the cartridge body 1, that is, a part of the cartridge body 1 is formed as the limiting part 14. When the developing cartridge 100 is assembled, the limiting part 26 abuts against the limiting part 14 to limit the displacement of the fixing part 2 relative to the developing cartridge 100.

[0100] In some embodiments, the limiting part 26 is provided as two, such as Figure 8B As shown, along the vertical direction, the two limiting parts 26 are located on the upper and lower sides of the connecting hole 23, so that the developing cartridge 100 can be more stably limited.

Claims

1. A developing cartridge, detachably mounted to an imaging device provided with a force-applying component, the developing cartridge comprising a cartridge body and a developing roller rotatably disposed within the cartridge body, the developing roller being used to carry developer contained within the cartridge body and supply the developer to a photosensitive drum outside the developing cartridge; characterized in that, The developing cartridge also includes a chip for storing developing cartridge parameter information, the chip having a cartridge-side electrical contact portion, the plane of which the cartridge-side electrical contact portion is located is not parallel to the vertical direction; When the developing cartridge is installed in the imaging equipment, before the developing cartridge performs its first development, the developing roller and the photosensitive drum are in a state of separation. When the developing cartridge is developing, the force-applying component applies a pushing force to the developing cartridge, and the developing roller and the photosensitive drum change from a state of separation to a state of contact.

2. The developing cartridge according to claim 1, characterized in that, The imaging device is also equipped with an electrical contact pin, and the box-side electrical contact portion is used to make electrical contact with the electrical contact pin; The plane containing the box-side electrical contact portion is inclined relative to the vertical direction of the developing box.

3. The developing cartridge according to claim 1, characterized in that, The imaging device is also equipped with an electrical contact pin, and the developing cartridge also includes an electrical connector for connecting the electrical contact portion and the electrical contact pin on the side of the cartridge.

4. The developing cartridge according to any one of claims 1-3, characterized in that, The developing cartridge also includes a fixing part that is movably connected to the cartridge body, and the imaging device is equipped with a positioning shaft; The fixing part includes a fixing part body and a positioning hole formed on the fixing part body. The fixing part is fixed to the imaging device by cooperating with the positioning shaft through the positioning hole.

5. The developing cartridge according to claim 4, characterized in that, The developing cartridge also includes a first elastic element disposed in the positioning hole.

6. The developing cartridge according to claim 4, characterized in that, The fixing part also has a mating hole formed on the fixing part body, and the imaging device also includes a mating part for engaging with the mating hole; the developing cartridge also includes a second elastic element disposed in the mating hole.

7. The developing cartridge according to claim 4, characterized in that, The fixing part also has a mating hole formed on the fixing part body and an extension formed on the fixing part. The imaging device also includes a mating part for engaging with the mating hole, and the extension is arranged around the circumference of the mating hole to cover at least a portion of the circumference of the mating part.

8. The developing cartridge according to claim 4, characterized in that, The developing cartridge also includes a guide mechanism for maintaining the movement path of the cartridge body, the guide mechanism including a guide part disposed on the cartridge body and a guided part disposed on the fixed part; Through the cooperation of the guide section and the guided section, the developing roller and the photosensitive drum switch between a state of being close to each other and a state of being separated from each other.

9. The developing cartridge according to claim 4, characterized in that, The fixing part also includes a coupling mechanism extending from the fixing part body in the installation direction, and a part of the box body is formed as a coupling mechanism for cooperating with the coupling mechanism.

10. A processing box, detachably mounted into an imaging device equipped with electrical styluses, characterized in that, The processing cartridge includes accessories, a drum assembly, and a developing cartridge. The developing cartridge includes a cartridge body and a developing roller rotatably disposed within the cartridge body. The developing roller is used to carry the developer contained within the cartridge body and supply the developer to the photosensitive drum outside the developing cartridge. When the developing cartridge is installed in the imaging equipment, before the developing cartridge performs its first development, the developing roller and the photosensitive drum are in a state of separation. When the developing cartridge is developing, the force-applying component applies a pushing force to the developing cartridge, and the developing roller and the photosensitive drum change from a state of separation to a state of contact. The accessory is detachably mounted on the developing cassette and / or drum assembly, and includes a mounting body and a chip mounted on the mounting body, the chip being used for electrical contact with an electrical contact pin.

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