Processing box

Abstract

The invention discloses a processing box, which comprises a powder cabin; a photosensitive drum; the developing roller is rotatably supported on the powder bin; the first power receiving part is arranged at one end of the powder bin in the length direction, and the first power receiving part can receive driving force to enable the developing roller to rotate; the powder bin can move between a position where the photosensitive drum is in contact with the developing roller and a position where the photosensitive drum is separated from the developing roller; the toner cartridge further comprises an elastic part, and when the first power receiving part does not receive the driving force, the elastic part enables the toner cartridge to be kept at the position where the photosensitive drum is separated from the developing roller; the processing box does not depend on a pushing part outside the electronic imaging device, the powder bin can be driven to rotate to realize contact between the developing roller and the photosensitive drum by arranging the pushed part to receive the first power receiving part to receive the rotary driving force from the electronic imaging device, and the compatibility and the universality of the processing box are better.

Description

[0001] This application is a divisional application of the patent application with the application date of May 12, 2021, application number 2021105192027, and invention name “Processing Box”. Technical Field

[0002] The present invention belongs to the technical field of imaging devices, and in particular relates to a processing box. Background Art

[0003] An electronic imaging device is a device that forms an image on a recording material using electrophotographic imaging technology. Examples include electrophotographic copiers, laser printers, electrophotographic printers, fax machines, and word processors. Electronic imaging devices generally include monochrome and color devices.

[0004] Conventional electronic imaging devices include a main body and a process cartridge removably mounted within the main body. The process cartridge has sidewalls along its length. The process cartridge typically contains rotating components, such as a photosensitive element, a developing element, a charging element, a powder feeding element, and a gear. These rotating components receive driving force from a power receiving element. The power receiving element is typically located on a sidewall of the process cartridge and rotates by receiving driving force from the main body of the electronic imaging device.

[0005] In the prior art, to protect the process cartridge, a roller-drum separation structure is provided on the process cartridge. That is, when the process cartridge is not performing electronic imaging, the developing element (developing roller) and the photosensitive element (photosensitive drum) are usually separated to protect the two elements. That is, the developing element and the photosensitive element do not contact each other when electronic imaging is not being performed. When electronic imaging is required, the developing element (developing roller) and the photosensitive element (photosensitive drum) are brought into contact to complete the imaging process. The process cartridge thus configured is generally divided into two parts: a developing hopper (powder hopper) containing the developing element (developing roller) and a waste toner hopper containing the photosensitive element (photosensitive drum), and these two parts are rotatably connected relative to each other.

[0006] Figure 1 It is a structural diagram of a color electronic imaging device. Figure 2 This is a schematic diagram of the principle of a group of process boxes installed in the color electronic imaging device being separated by a roller drum. Figure 1 、 Figure 2 As shown, the electronic imaging device 900 includes a tray 910 for placing a process cartridge, a first pusher 920 and a second pusher 930 for separating the roller and drum. When not performing electronic imaging, the first pusher 920 and the second pusher 930 push the developing bin (toner bin) or the waste toner bin of the process cartridge, thereby separating the roller and drum.

[0007] However, different types of electronic imaging devices have different positions for the pushing portion for roller-drum separation, such as Figure 1 In the process cartridge, the location pushed by the electronic imaging device is located at the top of the process cartridge; other locations are located at the bottom of the process cartridge or at other locations within the process cartridge. Therefore, designing a solution that is compatible with different models of electronic imaging devices can effectively increase production scale and reduce production costs. Summary of the Invention

[0008] In order to solve the technical problem that a process cartridge relies on a pushing portion outside an electronic imaging device to achieve roller-drum separation, the present invention provides a process cartridge comprising:

[0009] Powder bin;

[0010] Photosensitive drum;

[0011] A developing roller is rotatably supported on the powder bin;

[0012] a first power receiving component, disposed at one end of the powder bin in a lengthwise direction, the first power receiving component being capable of receiving a driving force to rotate the developing roller;

[0013] The powder bin is movable between a position where the photosensitive drum contacts the developing roller and a position where the photosensitive drum separates from the developing roller;

[0014] It is characterized by:

[0015] The invention further comprises an elastic member, which enables the powder bin to remain at a position where the photosensitive drum is separated from the developing roller when the first power receiving component does not receive the driving force.

[0016] In some embodiments, it further includes a pushed portion provided at one end of the powder bin in the length direction; when the first power receiving component receives the driving force to rotate, the pushed portion generates resistance or torque after receiving the driving force of the first power receiving component.

[0017] In some embodiments, the pushed part includes a rotatable force-receiving wheel; when the first power receiving component receives the driving force to drive the force-receiving wheel to rotate, the resistance encountered by the force-receiving wheel when rotating in a preset direction is greater than the resistance encountered when rotating in the opposite direction of the preset direction.

[0018] In some embodiments, the pushed part further includes a damping bearing or a pushed part elastic member, and when the force-receiving wheel receives the driving force and rotates, friction is generated between the damping bearing or the pushed part elastic member and the force-receiving wheel.

[0019] In some embodiments, the outer circumferential surface of the force-bearing wheel is a gear structure or a friction surface.

[0020] In some embodiments, when the powder bin moves from a position where the photosensitive drum is separated from the developing roller to a position where the photosensitive drum is in contact with the developing roller, the elastic member is deformed.

[0021] In some embodiments, the elastic member is located at one end of the powder bin.

[0022] In some embodiments, the elastic member is a compression spring, a torsion spring, a coil spring, or elastic rubber.

[0023] In some embodiments, an end cover is further included at one end of the processing box in the length direction; the powder bin is supported by the end cover so that it can swing between a position where the photosensitive drum contacts the developing roller and a position where the photosensitive drum separates from the developing roller.

[0024] In some embodiments, one end of the elastic member is connected to the end cover, and the other end is connected to the powder bin.

[0025] In some embodiments, the invention further includes a second power receiving component capable of receiving a driving force to rotate the photosensitive drum, wherein the second power receiving component is disposed at one end in the length direction of the photosensitive drum.

[0026] In some embodiments, a portion of the first power receiving component and / or a portion of the second power receiving component is exposed from the end cover.

[0027] In some embodiments, the processing box is detachably installed in an electronic imaging device, which includes a tray for placing the processing box and a pushing portion for achieving drum-roller separation; when the processing box is installed in the electronic imaging device, when the first power receiving component of the processing box does not receive driving force from the electronic imaging device, the elastic member of the processing box separates the developing roller from the photosensitive drum.

[0028] In some embodiments, the pushing portion of the electronic imaging device is disposed on a top or bottom of a process cartridge in the electronic imaging device.

[0029] In some embodiments, when the first power receiving component receives driving force from the electronic imaging device to rotate the developing roller, the powder bin moves from a position where the photosensitive drum is separated from the developing roller to a position where the photosensitive drum is in contact with the developing roller under the action of the driving force torque.

[0030] According to one aspect of the present invention, another process cartridge is provided, which is detachably mounted in an electronic imaging device, wherein the electronic imaging device is provided with a pushing portion for achieving drum-roller separation, and the process cartridge comprises:

[0031] Powder bin;

[0032] Photosensitive drum;

[0033] A developing roller is rotatably supported on the powder bin;

[0034] a first power receiving component, disposed at one end of the powder bin in a lengthwise direction, the first power receiving component being capable of receiving a driving force from the electronic imaging device to rotate the developing roller;

[0035] The powder bin is movable between a position where the photosensitive drum contacts the developing roller and a position where the photosensitive drum separates from the developing roller;

[0036] The processing box also includes an elastic member; when the processing box is installed to the electronic imaging device, when the first power receiving component does not receive driving force from the electronic imaging device, the elastic member keeps the powder bin in a position where the photosensitive drum is separated from the developing roller without relying on the pushing part of the electronic imaging device to push the powder bin.

[0037] In some embodiments, when the first power receiving component receives driving force from the electronic imaging device to rotate the developing roller, the powder bin is driven to rotate so that the developing roller contacts the photosensitive drum.

[0038] In some embodiments, the electronic imaging device further includes a tray for placing the process cartridge; and the pushing portion is disposed on the top or bottom of the process cartridge in the electronic imaging device.

[0039] Beneficial effects of the present invention: The processing box of the present invention does not rely on the pushing part outside the electronic imaging device. By setting the pushed part to receive the first power receiving component to receive the rotational driving force from the electronic imaging device, the powder bin can be driven to rotate to realize the contact between the developing roller and the photosensitive drum, so that the compatibility and versatility of the processing box are better. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a structural schematic diagram of a color electronic imaging device in the prior art;

[0041] Figure 2 This is a schematic diagram of the principle of a group of process boxes installed in the color electronic imaging device being separated by a roller drum in the prior art.

[0042] Figure 3 is a three-dimensional view of a process cartridge in a first embodiment of the present invention;

[0043] Figure 4 An exploded view of the positional relationship between the end cover and the process cartridge in the first embodiment of the present invention;

[0044] Figure 5 An exploded view of the positional relationship between the cover plate and the process box in the first embodiment of the present invention;

[0045] Figure 6 A schematic structural diagram of the process cartridge according to the first embodiment of the present invention, viewed from one end in the length direction of the process cartridge;

[0046] Figure 7 This is an exploded view of the end cover of the processing cartridge in the second embodiment of the present invention;

[0047] Figure 8 This is an exploded view of the structure of the first power receiving component after the end cover of the process cartridge is removed in the second embodiment of the present invention;

[0048] Figure 9 This is a pushed portion structure provided in the second embodiment of the present invention. DETAILED DESCRIPTION

[0049] The present invention will be further described in detail below with reference to the accompanying drawings.

[0050] Example 1

[0051] This embodiment provides a processing box that can achieve separation and contact of rollers and drums (i.e., developing roller and photosensitive drum), which does not rely on the driving mechanism for drum-roller separation in the electronic imaging device, and can complete the contact and separation of the rollers and drums by receiving driving force from the electronic imaging device or not receiving driving force.

[0052] like Figure 3-6 As shown, the process cartridge includes a powder hopper A10, a waste powder hopper A20, an end cap A30, a first power receiving component A11, a cover A12, a push receiving portion A13, a developing roller A14, a bracket A15, a second power receiving component A21, and a photosensitive drum A22. Two end caps A30 are provided, one at each end of the process cartridge in the longitudinal direction. The powder hopper A10 and the waste powder hopper A20 are located between the two end caps A30. The two end caps A30 support the powder hopper A10 and the waste powder hopper A20. The end caps A30 are fixedly connected to the waste powder hopper A20, and the powder hopper A10 is rotatably connected to the waste powder hopper A20 relative to the waste powder hopper A20. An elastic member A31, specifically a tension spring, is also provided between the powder hopper A10 and the waste powder hopper A20 to force the developing roller A14 and the photosensitive drum A22 to separate. The tension spring is provided on the side of the process cartridge away from the developing roller and the photosensitive drum, and its two ends are connected to the powder hopper A10 and the waste powder hopper A20, respectively. Alternatively, the elastic member A31 may also be a compression spring, the two ends of which are respectively connected to the powder bin A10 and the waste powder bin A20 and are arranged on a side of the process box away from the developing roller and the photosensitive drum.

[0053] The powder hopper A10 is used to store developer (such as toner) and, during the printing process of the processing box, transmits the developer to the photosensitive drum A22 through the powder feeding roller (not shown in the figure) and the developing roller A14, so that the electrostatic latent image formed on the surface of the photosensitive drum A22 is developed and converted into a developed image. The powder hopper A10 is provided with a first power receiving component A11 and a developing roller A14. The first power receiving component A11 is arranged on the outer surface of one end of the powder hopper A10 in the longitudinal direction. The longitudinal direction of the powder hopper A10 is consistent with the longitudinal direction of the processing box. A portion of the first power receiving component A11 can be exposed from the end cover A30. The first power receiving component A11 is preferably a twisted protrusion structure, or it can be a helical gear structure, as long as it can receive driving force from the imaging device. When the processing box is installed in the electronic imaging device (such as a laser printer), the first power receiving component A11 can receive rotational driving force from the electronic imaging device. The developing roller A14 is rotatably supported on the powder hopper A10 and can move with the movement of the powder hopper A10. The direction of the rotation axis of the developing roller A14 is consistent with the length direction of the powder hopper A10. The developing roller A14 can be directly or indirectly connected to the first power receiving component A11, so that the rotational driving force of the electronic imaging device is indirectly transmitted to the developing roller A14, causing the developing roller A14 to rotate and thus transmit the developer.

[0054] The waste powder bin A20 is provided with a second power receiving component A21 and a photosensitive drum A22. The second power receiving component A21 is arranged at one end of the photosensitive drum A22 in the length direction, and can also be arranged on the outer surface of one end of the waste powder bin A20 in the length direction. The length of the photosensitive drum A22 and the length direction of the waste powder bin A20 are consistent with the length direction of the processing box. A part of the second power receiving component A21 can be exposed from the end cover A30. The second power receiving component A21 is preferably constructed as a twisted protrusion structure. When the processing box is installed to the electronic imaging device, the second power receiving component A21 can receive rotational driving force from the electronic imaging device. The photosensitive drum A22 is rotatably supported in the waste powder bin A20, and the direction of the rotation axis of the photosensitive drum A22 is consistent with the length direction of the waste powder bin A20. The photosensitive drum A22 can be connected to the second power receiving component A21 directly or indirectly, so that the rotational driving force of the electronic imaging device is indirectly transmitted to the photosensitive drum A22; when the processing box completes a printing operation, the cleaning device (not shown in the figure) provided in the waste powder bin A20 scrapes off the residual developer attached to the surface of the photosensitive drum A22 and transports it to the waste powder bin A20.

[0055] In this embodiment, the first power receiving component A11 and the second power receiving component A21 are located at the same end of the processing box, the waste powder bin A20 is fixedly connected to the end cover A30, the powder bin A10 is supported by the end cover A30 and can swing within a certain range, that is, the powder bin A10 can swing relative to the waste powder bin A20, specifically between a position close to the waste powder bin A20 and a position away from the waste powder bin A20. During this swinging process, there is at least one position where the photosensitive drum A22 and the developing roller A14 are in contact.

[0056] like Figure 4 and 5 As shown, the cover plate A12 is arranged on the inner side of the end cover A30 and is fixedly connected to the end cover A30, specifically, it is arranged on the inner side of the end cover A30 at the same end as the first power receiving component A11 and the second power receiving component A21; during the process of roller separation or from separation to contact, the cover plate A12 can move relative to the powder bin A10.

[0057] Furthermore, a first through hole A121 is provided on the cover plate A12 for limiting the degree of freedom of the pushed part A13. Specifically, the pushed part A13 can pass through the first through hole A121, and the movement of the pushed part A13 is constrained by the first through hole A121, that is, during the roller separation process, the swing range of the powder bin A10 is also constrained by the first through hole A121; the first through hole A121 is preferably constructed as a strip hole or an arc hole.

[0058] Optionally, the cover plate A12 and the end cover A30 may be a split structure or an integrated structure.

[0059] like Figure 6 As shown, the bracket A15 is used to support the pushed portion A13. The bracket A15 is fixedly connected to the powder bin A10. Specifically, it is fixedly arranged on the outer surface of one end of the powder bin A10 along the length direction and is located at the same end of the powder bin A10 as the first power receiving component A11. The bracket A15 is located between the powder bin A10 and the cover A12. The bracket A15 can be fixed to the powder bin A10 by means of snap-fitting, gluing, etc. Optionally, the bracket A15 can also be provided integrally with the powder bin A10.

[0060] In some other embodiments, the bracket A15 may be omitted, and the pushed portion A13 may be provided on the powder bin A10 in a separate or integrated manner.

[0061] like Figure 4-6As shown, the pushed portion A13 is disposed on the bracket A15. The pushed portion A13 is capable of receiving the rotational driving force of the electronic imaging device to cause the developing roller A14 to move from a position separated from the photosensitive drum A22 to a position contacting the photosensitive drum A22. Specifically, after receiving the driving force from the first power receiving component A11, the pushed portion A13 causes the process cartridge to transition from a roller-drum separation state to a roller-drum contact state. Specifically, after the pushed portion A13 contacts and receives the rotational driving force from the first power receiving component A11, it drives the toner hopper A10, via the bracket A15, to rotate toward the waste toner hopper A20, bringing the developing roller A14 into contact with the photosensitive drum A22. Preferably, the thrust portion A13 includes a force-bearing wheel A131, a damping bearing A132, and a fixed shaft A133. The fixed shaft A133 is fixedly disposed on the outer side of the bracket A15 and protrudes from the outer side of the bracket A15 in a direction away from the outer side of the bracket A15. The fixed shaft A133 can be integral with the bracket A15 or separately disposed and fixed to the outer side of the bracket A15 by means of snap-fitting, gluing, etc. The damping bearing A132 is sleeved on the fixed shaft A133 and fixedly disposed relative to the fixed shaft A133. The damping bearing A132 can be made of elastic rubber or cotton glue. The force-bearing wheel A131 is rotatably supported on the outside of the outer circumferential surface of the damping bearing A132. The direction of the rotation axis of the force-bearing wheel A131 is parallel to the direction of the rotation axis of the developing roller A14. The outer circumferential surface of the force-bearing wheel A131 contacts the outer circumferential surface of the first power receiving component A11 to receive the driving force of the first power receiving component A11 for rotation; preferably, the outer circumferential surface of the force-bearing wheel A131 and the outer circumferential surface of the first power receiving component A11 are helical gear structures (i.e., gears).

[0062] The push portion A13 may also include an adjustment member, such as a screw, a strip, or a latch. The adjustment member is used to adjust the interference fit between the damping bearing and the force-bearing wheel. For example, a screw is provided at one end of the damping bearing A132. When the screw is tightened, the interference fit between the damping bearing A132 and the force-bearing wheel A131 increases, increasing the frictional force experienced by the force-bearing wheel A131 during rotation, and vice versa. This structural arrangement facilitates adjusting the frictional force between the damping bearing A132 and the force-bearing wheel A131, thereby adjusting the force required to move the powder bin A10.

[0063] When the force wheel A131 receives the driving force of the first power receiving component A11 and rotates in one direction (such as clockwise), a large resistance (friction force) is generated between the force wheel A131 and the damping bearing A132. This resistance can generate torque on the pushed part A13, the bracket A15 supporting the pushed part A13, and the powder bin A10 fixedly connected to the bracket A15, so as to drive the entire powder bin A10 to rotate relative to the waste powder bin A20, so that the developing roller A14 moves from a position separated from the photosensitive drum A22 to a position in contact with the photosensitive drum A22.

[0064] Optionally, it can be configured so that when the force wheel A131 rotates in another direction (such as counterclockwise), the friction between the force wheel A131 and the damping bearing A132 is smaller (or a ratchet structure is used).

[0065] refer to Figure 6 In the process of the processing box changing from the initial state of separation between the roller and drum to the state of contact between the roller and drum, the matching relationship between the first power receiving component A11, the pushed part A13 and the powder bin A10 and other components can be that the first power receiving component A11 is engaged with the driving component of the electronic imaging device and receives the driving force to rotate in the clockwise direction, and the force wheel A131 of the pushed part A13 receives the driving force and rotates in the counterclockwise direction. Friction is generated between the damping bearing A132 and the force wheel A131. As a result, the pushed part A13 drives the powder bin A10 to rotate relative to the waste powder bin A20 under the action of the driving force torque until the pushed part A13 is restricted by the first through hole A121, and the developing roller A14 moves from the position separated from the photosensitive drum A22 to the position in contact with the photosensitive drum A22, so that the developing operation can be performed. In addition, after the pushed part A13 is restricted by the first through hole A121 (specifically, the part of the fixed shaft A133 extending into the first through hole A121 moves in the first through hole A121 to achieve restriction on the pushed part A13), the force wheel A131 can rotate in a state where there is resistance with the damping bearing A132.

[0066] Alternatively, such fixed shaft A133 may be a non-regular circumferential surface, such as a cam structure.

[0067] Optionally, the outer circumferential surface of the damping bearing A132 can be a friction surface, such as a rubber surface, etc. Correspondingly, a friction surface that cooperates with the damping bearing A132 is also provided on the first power receiving component A11 to be able to transmit driving force to the damping bearing A132.

[0068] In some other embodiments, the ratchet structure can also be used to replace the damping bearing A132, which can achieve the effect of generating greater resistance to the force wheel in one direction and smaller resistance in the other direction, thereby making it easier for the developing roller A14 to return to the separated position after moving to the position of contact with the photosensitive drum A22.

[0069] Optionally, in some other embodiments, the pushed portion A13 may also omit the force wheel A131 structure, and the damping bearing A132 directly contacts the first power receiving component A11 to receive the driving force. The damping bearing A132 is constructed to be able to rotate relative to the fixed shaft A133, and when the damping bearing A132 rotates in one direction, a large resistance is generated between the damping bearing A132 and the fixed shaft A133, so as to drive the entire powder bin A10 to rotate relative to the waste powder bin A20, specifically to rotate the powder bin A10 toward the direction close to the waste powder bin A20, so that the developing roller A14 contacts the photosensitive drum A22.

[0070] Furthermore, an elastic member A31 is provided between the powder hopper A10 and the waste toner hopper A20, so that when the first power receiving component A11 does not receive the rotational driving force transmitted by the electronic imaging device, the processing cartridge is in a roller-drum separation state, that is, the developing roller A14 is not in contact with the photosensitive drum A22. Preferably, the elastic member A31 is a compression spring, one end of which is connected to the powder hopper A10 and the other end is connected to the waste toner hopper A20. When the rotational driving force received by the first power receiving component A11 is transmitted to the pushing portion A13, driving the powder hopper A10 toward the waste toner hopper A20 so that the developing roller A14 contacts the photosensitive drum A22, the elastic member A31 is compressed. When the first power receiving component A11 does not receive the rotational driving force of the electronic imaging device, the elastic member A31 recovers its shape, pushing the powder hopper A10 away from the waste toner hopper A20, thereby separating the developing roller A14 from the photosensitive drum A22. Optionally, the elastic member A31 may also be configured as a tension spring, a spring sheet, elastic rubber, etc., which may also achieve the same effect.

[0071] When the process cartridge is in the drum-roller separation state, and the first power receiving component A11 is not receiving the rotational driving force transmitted by the electronic imaging device, the powder hopper A10 rotates relative to the waste toner hopper A20 under the elastic restoring force of the elastic member A31, and the pushed portion A13 is driven by the powder hopper A10 to return to its initial state. Because the pushed portion A13 encounters less resistance in the other direction, this facilitates the pushed portion A13's return to its initial state (i.e., the drum-roller separation state) when the first power receiving component A11 is not receiving the rotational driving force transmitted by the electronic imaging device.

[0072] Optionally, the elastic member A31 may be provided in plurality and respectively disposed at different positions between the powder bin A10 and the waste powder bin A20.

[0073] It should be noted that when the force wheel A131 receives the driving force of the first power receiving component A11 and rotates in one direction, the torque generated by the resistance between the force wheel A131 and the damping bearing A132 on the entire powder bin A10 is greater than the elastic restoring force of the elastic part A31.

[0074] Optionally, the first power receiving component A11 can be an intermediate gear that receives driving force from other rotating components of the processing box, such as receiving driving force from a component that engages with an electronic imaging device, receiving driving force from a powder feeding roller gear, etc.

[0075] The processing box of this embodiment drives the powder bin A10 to rotate after receiving the driving force of the first power receiving component A11 by providing a push portion A13 so as to make the developing roller A14 contact with the photosensitive drum A22. There is no need to rely on the pushing portion (or separation mechanism) of the electronic imaging device to achieve drum-roller separation. The processing box can be compatible with different models of electronic imaging devices, thereby improving the compatibility and versatility of the processing box, effectively increasing the production scale, and reducing production costs.

[0076] Example 2

[0077] This embodiment further simplifies some parts based on the first embodiment and also provides optional alternatives for some structures.

[0078] like Figure 7 As shown, the elastic member B31 used to maintain the processing box in a roller-drum separation state when not receiving the rotational driving force transmitted by the electronic imaging device can be a coil spring. Specifically, one end of the elastic member B31 is connected to the end cover B30, and the other end is connected to the powder hopper B10. That is, the elastic member B31 is located between the inner side of the end cover B30 and the outer side of one end of the powder hopper B10. Preferably, the elastic member B31 and the first power receiving component B11 are located at the same end of the powder hopper B10. In its natural state, the elastic member B31 keeps the powder hopper B10 and the waste powder hopper B20 in a position where the photosensitive drum B22 and the developing roller B14 are separated. When the rotational driving force received by the first power receiving component B11 is transmitted to the pushed portion B13 and drives the powder hopper B10 to move, causing the developing roller B14 to contact the photosensitive drum B22, the elastic member B31 deforms; that is, it is compressed. When the first power receiving component B11 does not receive the rotational driving force of the electronic imaging device, the elastic member B31 recovers its shape and pushes the powder bin B10 to move away from the waste powder bin B20, so that the developing roller B14 is separated from the photosensitive drum B22.

[0079] Optionally, one end of the elastic member B31 may be connected to the end cover B30, and the other end may be connected to the bracket B15; one end of the elastic member B31 may be connected to the fixed shaft B134, and the other end may be connected to the end cover B30.

[0080] Alternatively, the elastic member B31 may also be located at an end of the powder bin B10 that is different from the first power receiving component B11.

[0081] Alternatively, the elastic member B31 may also use a torsion spring with similar configuration instead of a coil spring, which can also play the same role.

[0082] Optionally, the elastic member B31 may include both a compression spring and a coil spring.

[0083] like Figure 8 As shown, the bracket B15 is also provided with a support hole B151 and a second through hole B152. The first power receiving component B11 is rotatably supported by a support shaft B101 provided on the powder bin B10. The support shaft B101 is provided on the outer side of one end of the powder bin B10. The support shaft B101 protrudes from the outer side of one end of the powder bin B10 in a direction away from the outer side of the powder bin B10. Unlike the first embodiment, in this embodiment, the first power receiving component B11 is also constrained by the support hole B151 on the bracket B15. After being supported and constrained, the first power receiving component B11 can rotate freely relative to the powder bin B10, that is, the support shaft B101, the first power receiving component B11 and the support hole B151 are coaxially arranged. A portion of the gear portion of the first power receiving component B11 is exposed from the second through hole B152 of the bracket B15, and the pushed portion B13 can engage with the first power receiving component B11 through the second through hole B152. When the first power receiving component B11 rotates, on the one hand, the first power receiving component B11 engages with multiple rotating rollers on the powder hopper (such as the developing roller B14, the powder feeding roller, etc.) to drive these rotating rollers to rotate. On the other hand, the first power receiving component B11 engages with the pushing portion B13, and the pushing portion B13 drives the powder hopper B10 to move toward the waste powder hopper B20, so that the developing roller B14 contacts the photosensitive drum B22. Preferably, the pushing portion B13 is rotatably and dampedly mounted on the fixed shaft B153 of the bracket B15. When the installation is completed, the bracket B15 is fixedly mounted on the outer surface of one end of the powder hopper B10. Preferably, the method selected in this embodiment is to use an undercut to connect the bracket B15 and the powder hopper B10.

[0084] Optional, such as Figure 8 As shown, the outer circumferential surface of the first power receiving component B11 is provided with helical teeth, and the outer circumferential surface of the corresponding pushed part B13 is provided with helical teeth that cooperate with the helical teeth on the outer circumferential surface of the first power receiving component B11. Through the meshing process between the helical teeth, the pushed part B13 can move toward the direction close to the waste powder bin B20 under the action of the force of the first power receiving component B11, thereby driving the powder bin B10 to move toward the direction close to the waste powder bin B20, as a result, the developing roller B14 and the photosensitive drum B22 are in contact.

[0085] like Figure 9 As shown, this embodiment further discloses a pushed portion B13. Of course, various pushed portions in the first embodiment can also be used as a replacement, but the pushed portion B13 in this embodiment has a lower overall cost.

[0086] The pushed part B13 may include a fixed shaft B134 fixed on the bracket B15, a spring B131 fixed on the fixed shaft B134, a force-bearing wheel B133 rotatably supported by the fixed shaft B134, and a pushed part elastic part B132 that pushes the force-bearing wheel B133 to contact the bracket B15. The force-bearing wheel B133, the pushed part elastic part B132, and the spring B131 are arranged in sequence in a direction away from the outer surface of the bracket B15, that is, the force-bearing wheel B133 is closer to the outer surface of the bracket B15 relative to the spring B131, the pushed part elastic part B132 is restricted between the force-bearing wheel B133 and the spring B131, the elastic expansion and contraction direction of the pushed part elastic part B132 is along the axial direction of the force wheel B133, the pushed part elastic part B132 is preferably a compression spring, and the pushed part elastic part B132 is constructed to always be in a compressed state and always apply force to the force wheel B133. The gear portion of the force-receiving wheel B133 is preferably a helical gear structure, which can mesh with the gear portion of the first power receiving component B11 through the second through hole B152, thereby receiving the rotational driving force of the first power receiving component B11 and rotating. In addition, during the meshing and rotation of the force-receiving wheel B133 and the first power receiving component B11, a torque acting on the entire powder bin B10 can be generated, forcing the powder bin B10 to rotate in a direction closer to the waste powder bin B20, so that the developing roller B14 contacts the photosensitive drum B22. In addition, the force-receiving wheel B133 can also generate friction with the bracket B15. Specifically, the axial end face of the force-receiving wheel B133 contacts the outer surface of the bracket B15 to generate friction. Preferably, the elastic force of the push-receiving elastic member B132 promotes friction between the force-receiving wheel B133 and the bracket B15, thereby generating friction.

[0087] When the process cartridge is installed in the electronic imaging device, the device rotates the first force receiving component B11, causing the multiple rotating rollers engaged with the first force receiving component B11 to begin rotating. Simultaneously, the force-receiving wheel B133 engaged with the first force receiving component B11 also begins rotating, generating a torque on the powder hopper B10, driving it and bringing the developing roller B14 into contact with the photosensitive drum B22. Simultaneously, due to the push of the elastic member B132 on the pusher section, friction is generated between the force-receiving wheel B133 and the bracket B15, driving the bracket B15 and, consequently, the entire powder hopper B10 toward the waste toner hopper B20, bringing the developing roller B14 into contact with the photosensitive drum B22. The first force receiving component B11 then continues rotating. The movement of the powder hopper B10 toward the waste toner hopper B20 creates relative pressure between the developing roller B14 and the photosensitive drum B22, ensuring that the developing roller B14 can smoothly apply developer to the photosensitive drum B22 during printing.

[0088] The provision of an elastic member B132 on the push portion creates friction between the force-bearing wheel B133 and the bracket B15 as an additional force to drive the powder bin B10 to rotate, thereby reducing the load on the fixed shaft B134, preventing the fixed shaft B134 from breaking, and extending the service life of the fixed shaft B134. During the process of the process of the processing cartridge transitioning from the initial state of separation from the roller drum to the state of contact with the roller drum, the torque generated by the meshing rotation of the force-bearing wheel B133 and the first power receiving component B11 to drive the powder bin B10 to rotate needs to overcome the elastic force of the elastic member B31 in order to rotate the powder bin B10. This torque is loaded on the fixed shaft B134, and the fixed shaft B134, which bears the torque, is easily damaged. Therefore, adding an elastic member B132 on the push portion to create friction between the force-bearing wheel B133 and the bracket B15 as an additional force to drive the powder bin B10 to rotate, can reduce the force borne on the fixed shaft B134, reduce the possibility of damage to the fixed shaft B134, and extend the service life.

[0089] Optionally, the force-bearing wheel B133 of this embodiment can be replaced by the force-bearing wheel and damping bearing in Example 1, and its structure and working principle are the same as those in Example 1; on the other hand, on the basis of Example 1, the pushed part elastic part B132 and the spring leaf B131 of this embodiment are set to also achieve the technical effect of the present invention and reduce the force acting on the fixed shaft.

[0090] When the electronic imaging device stops working, the elastic member B31 (such as a coil spring and / or compression spring) drives the powder bin B10 away from the waste powder bin B20 to separate the roller drum. In some cases, the first power receiving component B11 needs to be reversed to complete the separation process.

[0091] Optionally, on the basis of the present embodiment, the elastic member A31 described in embodiment 1 may be provided, as long as the torque exerted by the first power receiving component on the pushed portion is large enough.

[0092] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of such features.

[0093] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. There are many variations in the shape, structure, and principle of the present invention. Therefore, any changes and modifications made without departing from the spirit and scope of the present invention should be included within the scope of the present invention.

Claims

1. Processing box, including: Powder bin; Photosensitive drum; A developing roller is rotatably supported on the powder bin; a first power receiving component, disposed at one end of the powder bin in a lengthwise direction, the first power receiving component being capable of receiving a driving force to rotate the developing roller; The powder bin is movable between a position where the photosensitive drum contacts the developing roller and a position where the photosensitive drum separates from the developing roller; It is characterized by: The invention further comprises an elastic member, which enables the powder bin to remain at a position where the photosensitive drum is separated from the developing roller when the first power receiving component does not receive the driving force.

2. The process cartridge according to claim 1, wherein It also includes a pushed portion arranged at one end of the powder bin in the length direction; when the first power receiving component receives the driving force to rotate, the pushed portion generates resistance or torque after receiving the driving force of the first power receiving component.

3. The process cartridge according to claim 2, wherein: The pushed part includes a rotatable force-receiving wheel; when the first power receiving component receives the driving force to drive the force-receiving wheel to rotate, the resistance encountered by the force-receiving wheel when rotating in a preset direction is greater than the resistance encountered when rotating in the opposite direction of the preset direction.

4. The process cartridge according to claim 3, wherein: The pushed part further includes a damping bearing or a pushed part elastic member. When the force-receiving wheel receives the driving force and rotates, friction is generated between the damping bearing or the pushed part elastic member and the force-receiving wheel.

5. The process cartridge according to claim 3 or 4, wherein: The outer circumferential surface of the force-bearing wheel is a gear structure or a friction surface.

6. The process cartridge according to claim 1, wherein When the powder bin moves from a position where the photosensitive drum is separated from the developing roller to a position where the photosensitive drum is in contact with the developing roller, the elastic member is deformed.

7. The process cartridge according to claim 1, wherein The elastic member is located at one end of the powder bin.

8. The process cartridge according to claim 1, 2, 3, 4, 6 or 7, wherein: The elastic member is a compression spring, a torsion spring, a coil spring or elastic rubber.

9. The process cartridge according to claim 1 or 2 or 3 or 4 or 6 or 7, wherein: It also includes an end cover located at one end of the processing box in the length direction; the powder bin is supported by the end cover so that it can swing between a position where the photosensitive drum contacts the developing roller and a position where the photosensitive drum separates from the developing roller.

10. The process cartridge according to claim 9, wherein One end of the elastic member is connected to the end cover, and the other end is connected to the powder bin.

11. The process cartridge according to claim 9, wherein The device further includes a second power receiving component capable of receiving a driving force to rotate the photosensitive drum, wherein the second power receiving component is disposed at one end in the length direction of the photosensitive drum.

12. The process cartridge according to claim 11, wherein A portion of the first power receiving component and / or a portion of the second power receiving component is exposed from the end cover.

13. The process cartridge according to claim 1 or 2 or 3 or 4 or 6 or 7 or 10 or 11 or 12, wherein: The processing box can be detachably installed in an electronic imaging device, which includes a tray for placing the processing box and a pushing part for separating the drum and roller; when the processing box is installed in the electronic imaging device, when the first power receiving component of the processing box does not receive driving force from the electronic imaging device, the elastic part of the processing box separates the developing roller from the photosensitive drum.

14. The process cartridge according to claim 13, wherein The pushing portion of the electronic imaging device is arranged on the top or bottom of the process box in the electronic imaging device.

15. The process cartridge according to claim 13, wherein When the first power receiving component receives driving force from the electronic imaging device to rotate the developing roller, the powder bin moves from a position where the photosensitive drum and the developing roller are separated to a position where the photosensitive drum and the developing roller are in contact under the action of the driving force torque.

16. A process cartridge detachably mounted in an electronic imaging device, wherein the electronic imaging device is provided with a pusher for separating a drum and a roller, the process cartridge comprising: Powder bin; Photosensitive drum; A developing roller is rotatably supported on the powder bin; a first power receiving component, disposed at one end of the powder bin in a lengthwise direction, the first power receiving component being capable of receiving a driving force from the electronic imaging device to rotate the developing roller; The powder bin is movable between a position where the photosensitive drum contacts the developing roller and a position where the photosensitive drum separates from the developing roller; It is characterized by: The processing box also includes an elastic member; when the processing box is installed to the electronic imaging device, when the first power receiving component does not receive driving force from the electronic imaging device, the elastic member keeps the powder bin in a position where the photosensitive drum is separated from the developing roller without relying on the pushing part of the electronic imaging device to push the powder bin.

17. The process cartridge according to claim 16, wherein: When the first power receiving component receives the driving force from the electronic imaging device to rotate the developing roller, the powder bin is driven to rotate so that the developing roller contacts the photosensitive drum.

18. The process cartridge according to claim 16 or 17, wherein: The electronic imaging device further comprises a tray for placing the processing box; the pushing portion is arranged on the top or bottom of the processing box in the electronic imaging device.

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