Developing cartridge, process cartridge, and electronic image forming apparatus

Abstract

The application provides a developing box, a processing box and an electronic imaging device. The developing box comprises an end cover, a chip and a protective cover unit. The chip is installed on the end cover. The protective cover unit comprises a cover assembly, a transmission assembly and a reset elastic member. The cover assembly is installed on the end cover. The transmission assembly is connected between the cover assembly and the end cover. The transmission assembly has a first design position and a second design position. The transmission assembly can be triggered and moved to the first design position. The transmission assembly in the first design position forces the cover assembly to uncover the chip. When the transmission assembly is not triggered, the reset elastic member forces the transmission assembly to move to the second design position. The transmission assembly in the second design position forces the cover assembly to cover the chip. The processing box and the electronic imaging device are both provided with the developing box. The developing box can protect the chip in a non-use state and uncover the chip in a use state.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic imaging, in particular to a developing box, a processing box provided with the developing box, and an electronic imaging device. Background Art

[0002] Existing developer cartridges are equipped with a chip that stores pre-set information about printing consumables and is used to exchange information with electronic imaging devices. For example, the electronic imaging device can read the type of developer cartridge installed with the chip from the chip for comparison and identification. It can also write relevant information reflecting the status of the developer cartridge into the chip. The electronic imaging device can also write the usage history of the developer cartridge and / or process cartridge into the chip based on the number of prints already made by the process cartridge equipped with the developer cartridge. This allows the manufacturer to read this usage history information from the chip returned by the user. This allows for accurate inspection and component replacement during the regeneration process, improving work efficiency.

[0003] However, since the existing developing box does not have a protective cover to protect the chip or the electrical contacts thereon, the chip is directly exposed outside the developing box. As a result, the chip or the electrical contacts thereon are easily damaged or contaminated during transportation, storage and installation of the developing box. In severe cases, the information exchange between the chip and the electronic imaging device may fail, thereby shortening the service life of the developing box. Summary of the Invention

[0004] In order to solve the above problems, the main purpose of the present invention is to provide a developing box that covers and protects the chip when not in use, and removes the cover of the chip to expose the chip when in use.

[0005] Another object of the present invention is to provide a process cartridge provided with the above-mentioned developing cartridge.

[0006] Another object of the present invention is to provide an electronic imaging device provided with the above-mentioned processing box.

[0007] In order to achieve the first purpose of the present invention, the present invention provides a developing box, including an end cover and a chip, the chip is installed on the end cover, wherein the developing box also includes a protective cover unit, the protective cover unit includes a cover assembly, a transmission assembly and a reset elastic member, the cover assembly is installed on the end cover, the transmission assembly is connected between the cover assembly and the end cover, the transmission assembly has a first design position and a second design position, the transmission assembly can move between the first design position and the second design position, the transmission assembly can be triggered and moved to the first design position, the transmission assembly at the first design position forces the cover assembly to release the cover of the chip and expose the chip, the reset elastic member can force the transmission assembly to move to the second design position, and the transmission assembly at the second design position forces the cover assembly to cover the chip.

[0008] As can be seen from the above, through the design of the protective cover unit, when the developing box is in a non-use state, the transmission assembly can force the cover assembly to cover the chip under the action of the reset elastic member to protect the chip and prevent the chip or the electrical contacts thereon from being damaged or contaminated during transportation, storage and installation, thereby ensuring reliable information exchange between the chip and the electronic imaging device and extending the service life of the developing box; when the developing box is in use, the transmission assembly is triggered by the trigger part on the drum frame of the processing box or the trigger part in the processing box installation cavity of the electronic imaging device, forcing the cover assembly to release the cover of the chip and fully expose the chip, so that the chip can be connected to the electrical contact pins in the electronic imaging device. In addition, since the transmission assembly can rely on the trigger part to release the cover assembly from covering the chip when the developing box is installed on the drum frame, the user-friendliness of the operation is increased.

[0009] A preferred solution is that the cover assembly includes a first cover plate and a second cover plate, the first cover plate is rotatably connected to the end cover around a first axis, and the second cover plate is rotatably connected to the end cover around a second axis, the first axis is parallel to the second axis, and in a first direction, the first axis and the second axis are located on both sides of the chip, and the transmission assembly is respectively connected to the first cover plate, the second cover plate and the end cover; when the transmission assembly moves to a first design position, the transmission assembly forces the first cover plate and the second cover plate to rotate back to the chip and release the cover on the chip; when the transmission assembly moves to a second design position, the transmission assembly forces the first cover plate and the second cover plate to rotate toward the chip and cover the chip.

[0010] As can be seen from the above, the cover assembly is arranged as a double-door structure, so that when the cover assembly rotates relative to the end cover to release the cover on the chip, the cover assembly is prevented from colliding with the electric contact pins in the electronic imaging device, thereby ensuring that the cover assembly can be opened and closed normally and protecting the electric contact pins, thereby extending the service life of the developing box and the electronic imaging device.

[0011] A further solution is that the transmission assembly includes a slider, a first connecting rod, a second connecting rod and a first pressure rod, the slider is slidably connected to the end cover in a second direction, the second direction is perpendicular to the first direction, the two ends of the first connecting rod are respectively hinged to the first cover plate and the slider, the two ends of the second connecting rod are respectively hinged to the second cover plate and the slider, the first pressure rod is rotatably connected to the end cover around a third axis, and the third axis is parallel to the first axis; when the first end of the first pressure rod is triggered, the second end of the first pressure rod drives the slider to move toward the cover assembly in the second direction, so that the first connecting rod and the second connecting rod respectively drive the first cover plate and the second cover plate to rotate back to the chip and release the cover on the chip; the reset elastic member can force the slider to move back to the cover assembly in the second direction, so that the first connecting rod and the second connecting rod respectively drive the first cover plate and the second cover plate to rotate toward the chip and cover the chip.

[0012] From the above, the above design makes the slider be able to drive the first cover plate and the second cover plate to rotate simultaneously through the first connecting rod and the second connecting rod when the slider slides, so that the structure of the transmission assembly is more optimized, compact and reasonable, and the first pressure rod is used to cooperate with the trigger part on the drum box drum frame or the trigger part in the processing box containing cavity of the electronic imaging equipment, so that when the developing box is installed to the designed installation position, the trigger part can trigger the first pressure rod to slide the slider, and then force the first cover plate and the second cover plate to rotate and open, so as to remove the cover of the chip, and ensure that the chip can be reliably connected with the electric contact pin of the electronic imaging equipment.

[0013] Further, the first connecting rod and the first hinge point of the first cover plate are arranged close to the first shaft, and the second connecting rod and the second hinge point of the second cover plate are arranged close to the second shaft, and in the first direction, the first hinge point and the second hinge point are located between the first shaft and the second shaft.

[0014] From the above, the above design can prevent the first connecting rod and the second connecting rod from interfering with the electric contact pin of the electronic imaging equipment, so as to ensure that the first cover plate and the second cover plate can be reliably opened to remove the cover of the chip, and at least one of the first connecting rod, the second connecting rod and the electric contact pin is prevented from being damaged.

[0015] Further, the first end of the first pressure rod is bent away from the second end of the first pressure rod relative to the cover assembly, and the third shaft is located at the bending position of the first pressure rod.

[0016] From the above, the first pressure rod is designed as a bending structure, which can ensure that the slider has sufficient sliding stroke, while reducing the space occupied by the first pressure rod, so that the structure of the developing box is more optimized, reasonable and compact.

[0017] Further, the reset elastic member is a first compression spring, the first compression spring abuts between the slider and the end cover; the end cover is provided with a limiting part, and the second end of the first pressure rod is located between the slider and the limiting part.

[0018] From the above, the limiting part can limit the first pressure rod, and ensure the position state of the first pressure rod, so that the first pressure rod can be reliably triggered by the trigger part on the drum box drum frame or the trigger part in the processing box containing cavity of the electronic imaging equipment when it is installed in the electronic imaging equipment.

[0019] Another preferred solution is that two first slide grooves and a second slide groove are provided on the end cover, and the two first slide grooves are distributed on both sides of the chip along the axial direction of the developing roller of the developing box, and the first slide groove extends along a third direction, and the third direction is parallel to the substrate of the chip; the cover assembly is a third cover plate, and the third cover plate is respectively connected to the two first slide grooves, and the third cover plate can slide along the first slide groove; the transmission assembly is a second pressure rod, and the first end of the second pressure rod is fixedly connected to the third cover plate, and the second pressure rod passes through the second slide groove, and the second slide groove is parallel or inclined to the third direction; when the second end of the second pressure rod is triggered, the second pressure rod drives the third cover plate along the first slide groove away from the chip and releases the cover of the chip; the reset elastic member can force the second pressure rod to move to the second design position, so that the second pressure rod drives the third cover plate to move along the first slide groove toward the chip and cover the chip.

[0020] As can be seen from the above, since the second pressure rod is fixedly connected to the third cover plate, when the second pressure rod is triggered by the trigger part on the drum frame of the drum box or the trigger part in the processing box installation cavity of the electronic imaging device, the second pressure rod can push the third cover plate to slide along the first slide groove away from the chip under the guidance of the second slide groove, so that the third cover plate releases the cover of the chip, thereby enabling the third cover plate to connect with the electrical contact pin of the electronic imaging device; when the developing box is removed from the drum frame or taken out from the processing box installation cavity, the second pressure rod pulls the third cover plate along the first slide groove toward the chip under the action of the reset elastic member to cover the chip to prevent the chip or the electrical contacts thereon from being damaged or contaminated.

[0021] A further solution is that the second pressure rod extends obliquely from the third cover plate toward the developing roller side, and the second end of the second pressure rod is bent toward the developing roller relative to the first end of the second pressure rod; the reset elastic member is a second compression spring, the second pressure rod has a first clamping portion near its second end, and a second clamping portion is provided on the end cover, and the second compression spring abuts between the first clamping portion and the second clamping portion.

[0022] As can be seen from the above, the second pressure rod with a bent arrangement can reduce the space it occupies, making the structure of the developing box more optimized, reasonable and compact; and the design of the first clamping part on the second pressure rod and the second clamping part on the end cover can limit the second compression spring to prevent the second compression spring from detaching from the end cover, thereby ensuring that when the developing box is not in use, the third cover plate can cover the chip to prevent the chip or the electrical contacts thereon from being damaged, contaminated with dirt and other problems.

[0023] In order to achieve another object of the present invention, the present invention provides a processing box, including a drum box, wherein the processing box also includes the above-mentioned developing box, the drum box is connected to the developing box, and the photosensitive drum of the drum box is adjacent to the developing roller of the developing box.

[0024] As can be seen from the above, the processing box provided with the above-mentioned developing box can cover and protect the chip on the developing box when the developing box is in a non-use state, thereby preventing the chip or the electrical contacts thereon from being damaged, contaminated by dirt, and other problems; and, when the developing box is in use, the transmission assembly can be triggered by the trigger part on the drum box drum frame or the trigger part in the processing box accommodating chamber of the electronic imaging device, so that the transmission assembly forces the cover assembly to release the cover of the chip, thereby enabling the chip to be connected to the electrical contact pin in the electronic imaging device.

[0025] In order to achieve another object of the present invention, the present invention provides an electronic imaging device, including a shell, in which a processing box mounting cavity is provided, wherein the above-mentioned processing box is installed in the processing box mounting cavity, and a triggering part is provided in the processing box mounting cavity or on the drum frame of the drum box. When the developing box is installed to the designed installation position, the triggering part triggers the transmission assembly and forces the transmission assembly to move to the first designed position.

[0026] As can be seen from the above, the electronic imaging device provided with the above-mentioned processing box can cover and protect the chip on the developing box when the developing box is in a non-use state, thereby preventing the chip or the electrical contacts thereon from being damaged, contaminated by dirt, and other problems; and, when the developing box is in use, it can also trigger the transmission assembly through the trigger part on the drum box drum frame or the trigger part in the processing box accommodating chamber of the electronic imaging device, so that the transmission assembly forces the cover assembly to release the cover of the chip, thereby allowing the chip to be connected to the electrical contact pin in the electronic imaging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of the first embodiment of the developing box of the present invention.

[0028] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0029] Figure 3 It is a structural diagram of the protective cover unit of the first embodiment of the developer cartridge of the present invention with some components omitted.

[0030] Figure 4 It is a partial view of the first embodiment of the developing box of the present invention when the transmission assembly is in the first design position at a first viewing angle.

[0031] Figure 5 It is a partial view of the transmission assembly of the first embodiment of the developing box of the present invention at a second viewing angle when the transmission assembly is in the first design position.

[0032] Figure 6 It is a structural diagram of the second embodiment of the developing box of the present invention.

[0033] Figure 7 yes Figure 6Enlarged view of point B in the middle.

[0034] Figure 8 It is a structural diagram of the end cover of the second embodiment of the developer box of the present invention.

[0035] Figure 9 1 is a structural diagram of the protective cover unit of the second embodiment of the developer cartridge of the present invention with some components omitted.

[0036] Figure 10 This is a partial view of the transmission assembly of the second embodiment of the developer box of the present invention when it is in the first design position.

[0037] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0038] First embodiment of the developing cartridge

[0039] Reference Figure 1 and Figure 2 The developing box 100 includes a powder bin, a stirring frame, a developing roller, a scraper, a transmission wheel set, an end cover 1, a chip 2 and a protective cover unit 30. Among them, the powder hopper has a powder storage chamber, which is used to store carbon powder; the stirring frame is rotatably mounted on the powder hopper around its own first rotating axis, and the stirring frame is located in the powder storage chamber, and the stirring frame is used to stir the carbon powder in the powder storage chamber to break up the carbon powder and prevent the carbon powder from clumping; the developing roller is rotatably mounted on the powder hopper around its own second rotating axis, and the developing roller is located at the powder outlet of the powder storage chamber, so that the carbon powder in the powder storage chamber is adsorbed onto the developing roller, and the first rotating axis is parallel to the second rotating axis; the scraper is mounted on the powder hopper and located at the powder outlet, and the blade of the scraper is adjacent to the outer peripheral surface of the developing roller to evenly scrape the carbon powder adsorbed on the developing roller to ensure that the thickness of the carbon powder layer on the developing roller is consistent; the transmission wheel group is mounted at one end of the powder hopper, and the transmission wheel group is respectively connected to the stirring frame and the developing roller, so that the transmission wheel group can respectively drive the stirring frame and the developing roller to rotate.

[0040] End cap 1 is mounted at the end of the powder hopper and covers the drive wheel assembly to prevent external dust and debris from entering the drive wheel assembly, potentially affecting or even failing the transmission. Chip 2 is mounted on end cap 1 and stores pre-set information about printing consumables. Chip 2 is used to communicate with the electronic imaging device.

[0041] Combine Figures 3 to 5The protective cover unit 30 includes a cover assembly 3, a transmission assembly 4, and a reset elastic member 5. The cover assembly 3 is mounted on the end cover 1, and the transmission assembly 4 is connected between the cover assembly 3 and the end cover 1. The transmission assembly 4 has a first design position and a second design position, and the transmission assembly 4 can move between the first design position and the second design position. When the developing cartridge 100 is in use, the transmission assembly 4 is triggered by the triggering portion 101 on the drum frame of the processing cartridge or the triggering portion 101 in the processing cartridge mounting cavity of the electronic imaging device; when the transmission assembly 4 is triggered, the transmission assembly 4 moves to the first design position, and the transmission assembly 4 at the first design position forces the cover assembly 3 to contact the chip 2 and fully expose the chip 2 (see Figure 4 and Figure 5 ), thereby enabling the electrical contact pins 102 of the electronic imaging device to connect with the chip 2, thereby enabling the electronic imaging device to exchange information with the developing cartridge 100 or the processing cartridge provided with the developing cartridge 100. The reset elastic member 5 is connected between the end cover 1 and the transmission assembly 4. When the transmission assembly 4 is not triggered, the reset elastic member 5 forces the transmission assembly 4 to move to the second design position, and the transmission assembly 4 in the second design position forces the cover assembly 3 to cover the chip 2 (see Figure 1 and Figure 2 ) to cover and protect the chip 2 to prevent the chip 2 or the electrical contacts thereon from being damaged or contaminated during transportation, storage and installation, thereby ensuring reliable information exchange between the chip 2 and the electronic imaging device and extending the service life of the developing box 100.

[0042] Specifically, in this embodiment:

[0043] The cover assembly 3 includes a first cover plate 31 and a second cover plate 32. The first cover plate 31 is rotatably connected to the end cover 1 about a first axis. Specifically, a first rotating shaft 311 is provided on one side of the first cover plate 31. The first rotating shaft 311 is rotatably connected to the end cover 1, and the third rotation axis of the first rotating shaft 311 is the first axis. In addition, the first cover plate 31 is provided with a first hinge portion 312 near the first rotating shaft 311. The second cover plate 32 is rotatably connected to the end cover 1 about a second axis. A second rotating shaft 321 is provided on one side of the second cover plate 32. The second rotating shaft 321 is rotatably connected to the end cover 1, and the fourth rotation axis of the second rotating shaft 321 is the second axis. In addition, the second cover plate 32 is provided with a second hinge portion 322 near the second rotating shaft 321. In the first direction X, the first axis and the second axis are located on either side of the chip 2, so that the first cover plate 31 and the second cover plate 32 form a double-door structure relative to the chip 2. Furthermore, in the first direction X, the first hinge portion 312 and the second hinge portion 322 are both located between the first axis and the second axis. The first axis and the second axis are both parallel to the second rotation axis.

[0044] The transmission assembly 4 includes a slider 41, a first connecting rod 42, a second connecting rod 43, and a first pressure rod 44. A third chute 11 is provided on the end cap 1. The third chute 11 extends along a second direction Z, which is perpendicular to the first direction X and perpendicular to the substrate of the chip 2. The slider 41 is slidably mounted within the third chute 11 along the second direction Z. A connecting portion 411 is provided on the end of the slider 41 closest to the chip 2, and a second stopper 412 is provided on the end of the slider 41 away from the chip 2. In the second direction Z, the connecting portion 411 and the second stopper 412 are respectively located on either side of the third chute 11.

[0045] The two ends of the first connecting rod 42 are hinged to the connecting part 411 and the first hinge part 312 respectively, and the two ends of the second connecting rod 43 are hinged to the connecting part 411 and the second hinge part 322 respectively, so that when the slider 41 moves toward the chip 2 in the second direction Z, the slider 41 can control the first cover plate 31 and the second cover plate 32 to rotate back to the chip 2 through the first connecting rod 42 and the second connecting rod 43, so as to release the covering of the chip 2 by the first cover plate 31 and the second cover plate 32 and allow the chip 2 to be completely exposed, so that the electrical contact pins 102 of the electronic imaging device can be electrically connected to the chip 2.

[0046] The first compression rod 44 is rotatably connected to the end cap 1 about a third axis, which is parallel to the first axis. The return spring 5 is preferably a first compression spring. The end cap 1 is provided with a third engaging portion at the third chute 11. A portion of the first compression spring is engaged within the third engaging portion, and the first compression spring abuts between the third engaging portion and the second limiting portion 412.

[0047] The first pressure rod 44 is used to cooperate with the trigger portion 101 on the skeleton of the processing box on which the developing box 100 is provided or the trigger portion 101 in the processing box accommodating chamber of the electronic imaging device; when the developing box 100 is gradually installed to the designed installation position, the first end of the first pressure rod 44 contacts the trigger portion 101 and is pressed and triggered by the trigger portion 101, and gradually rotates. During the rotation of the first pressure rod 44, the second end of the first pressure rod 44 drives the slider 41 to gradually move toward the cover assembly 3 in the second direction Z, so that the first connecting rod 42 and the second connecting rod 43 respectively drive the first cover plate 31 and the second cover plate 32 to gradually rotate back to the chip 2; when the developing box 100 is installed to the designed installation position, the transmission assembly 4 is in the first designed position (such as Figure 4 and Figure 5 As shown), at this time, the first cover plate 31 and the second cover plate 32 release the covering of the chip 2, and the chip 2 is completely exposed, and the electrical contact pins 102 of the electronic imaging device are in contact with the electrical contacts of the chip 2.

[0048] When the developing cartridge 100 is withdrawn from the designed installation position, since the first end of the first pressure rod 44 is not triggered (wherein, the first pressure rod 44 is deemed not to be triggered during the process of withdrawing the developing cartridge 100 from the designed installation position), the reset elastic member 5 forces the slider 41 to move back toward the cover assembly 3 in the second direction Z, and the first connecting rod 42 and the second connecting rod 43 respectively drive the first cover plate 31 and the second cover plate 32 to rotate toward the chip 2; when the developing cartridge 100 is withdrawn from the designed installation position, when the transmission assembly 4 moves to the second designed position (such as Figure 1 and Figure 2 As shown in FIG. 1 , the first cover plate 31 and the second cover plate 32 cover the chip 2, thereby preventing the chip 2 on the developer cartridge 100 from being damaged or contaminated when the developer cartridge 100 is not in use. This ensures reliable information exchange between the chip 2 and the electronic imaging device when the developer cartridge 100 is in use, thereby extending the service life of the developer cartridge 100. The rotation angle of the first cover plate 31 is preferably between 90° and 180°, and the rotation angle of the second cover plate 32 is preferably between 90° and 180°. Furthermore, the rotation angle of the first cover plate 31 is 90°, and the rotation angle of the second cover plate 32 is 90°.

[0049] Furthermore, when the reset elastic member 5 forces the slider 41 to move away from the cover assembly 3 in the second direction Z, the first pressure rod 44 is also reset under the action of the second limit portion 412 of the slider 41. Preferably, a limit portion 12 is provided on the end cover 1, with the second end of the first pressure rod 44 positioned between the limit portion 12 and the second limit portion 12. The provision of the limit portion 12 on the end cover 1 limits the first pressure rod 44, ensuring the position of the first pressure rod 44. This ensures that the first pressure rod 44 can be reliably triggered by the trigger portion 101 on the drum frame or the trigger portion 101 within the process cartridge accommodating chamber when the first pressure rod 44 is installed in the electronic imaging device.

[0050] Furthermore, the first end of the first pressure-receiving rod 44 is bent relative to the second end of the first pressure-receiving rod 44, away from the cover assembly 3, and the third axis is located at the bent portion of the first pressure-receiving rod 44. Designing the first pressure-receiving rod 44 as a bent structure can ensure that the slider 41 has a sufficient sliding stroke while reducing the space occupied by the first pressure-receiving rod 44, thereby making the structure of the developer cartridge 100 more optimized, reasonable, and compact.

[0051] The present invention provides a structural design for the developing box, so that when the developing box is in a non-use state, the transmission assembly can force the cover assembly to cover the chip under the action of the reset elastic member to protect the chip and prevent the chip or the electrical contacts thereon from being damaged or contaminated during transportation, storage and installation, thereby ensuring reliable information exchange between the chip and the electronic imaging device and extending the service life of the developing box; when the developing box is in use, the transmission assembly is triggered by the trigger part on the drum frame of the processing box or the trigger part in the processing box installation cavity of the electronic imaging device, forcing the cover assembly to release the cover of the chip and fully expose the chip, so that the chip can be connected to the electrical contact pin in the electronic imaging device. In addition, since the transmission assembly can rely on the trigger part to release the cover assembly from covering the chip when the developing box is installed on the drum frame, the user-friendliness of the operation is increased.

[0052] Second embodiment of the developing cartridge

[0053] Reference Figure 6 and Figure 10 The difference between this embodiment and the first embodiment of the developing cartridge lies in the structure of the protective rod unit and the connection method with the end cover. Specifically, in this embodiment:

[0054] The end cap 6 eliminates the third chute, the limiting portion, and the third engaging portion. Instead, the end cap 6 is provided with two first chute grooves 61 and one second chute groove 62. The two first chute grooves 61 are located on either side of the chip 10 along the axial direction Y1 of the developing roller of the developing cartridge. The first chute groove 61 extends along a third direction X1. The third direction X1 is parallel to the substrate of the chip 10 and perpendicular to the axial direction Y1 of the developing roller. Of course, in other embodiments, the third direction X1 may be tilted slightly relative to the substrate of the chip 10.

[0055] The cover assembly is a third cover plate 7, which is provided with a sliding shaft 71. The sliding shaft 71 is parallel to the axial direction Y1 of the developing roller. There are preferably four sliding shafts 71, and the four sliding shafts 71 are located at the four corners of the third cover plate 7. Two of the four sliding shafts 71 are disposed in the first first slide groove 61, and the other two of the four sliding shafts 71 are disposed in the second first slide groove 61, allowing the third cover plate 7 to slide along the first slide groove 61, thereby allowing the third cover plate 7 to cover the chip 10 or to contact the chip 10 to completely expose the chip 10. In addition, the provision of the sliding shaft 71 can also reduce the friction between the third cover plate 7 and the first slide groove 61, allowing the third cover plate 7 to slide more smoothly along the first slide groove 61.

[0056] The transmission assembly is a second pressure rod 8, the first end of which is fixedly connected to the third cover plate 7. Preferably, the first end of the second pressure rod 8 is fixedly connected to a sliding shaft 71 on the third cover plate 7, which is close to the outside of the end cap 6 and close to the chip 10. Furthermore, the second pressure rod 8 can be integrally formed with the third cover plate 7. Of course, the second pressure rod 8 can also be adhesively fixed to the third cover plate 7. The second pressure rod 8 passes through the second slide groove 62, so that the second slide groove 62 can limit and guide the second pressure rod 8. The second slide groove 62 is inclined to the third direction X1. Of course, in other embodiments, the second slide groove 62 can also be parallel to the third direction X1.

[0057] Furthermore, the second pressure rod 8 extends obliquely from the third cover plate 7 toward the developer roller, and the second end of the second pressure rod 8 is bent toward the developer roller relative to the first end of the second pressure rod 8. Providing the second pressure rod 8 with a bent structure can reduce the space occupied by the second pressure rod 8, thereby making the structure of the developer cartridge more optimized, reasonable, and compact.

[0058] In addition, a first engaging portion 81 is provided near the second end of the second pressure-receiving rod 8, and a second engaging portion 63 is also provided on the end cap 6. The resetting elastic member is a second compression spring 9, which engages between the first engaging portion 81 and the second engaging portion 63, with both ends of the second compression spring 9 respectively abutting the first engaging portion 81 and the second engaging portion 63. The design of the first engaging portion 81 on the second pressure-receiving rod 8 and the second engaging portion 63 on the end cap 6 limits the second compression spring 9, preventing it from detaching from the end cap 6. This ensures that when the developing cartridge is not in use, the third cover plate 7 can cover the chip 10, preventing damage to the chip 10 or its electrical contacts, as well as contamination.

[0059] When the developing cartridge is gradually installed to the designed installation position, the second end of the second pressure rod 8 contacts the trigger portion 103 on the drum frame of the processing cartridge and the trigger portion 103 in the processing cartridge accommodating chamber of the electronic imaging device and is pressed and triggered by the trigger portion 103, so that the second pressure rod 8 gradually pushes the third cover plate 7 to slide along the first slide groove 61 away from the chip 10; when the developing cartridge is installed to the designed installation position, the second pressure rod 8 moves to the first designed position (such as Figure 10 As shown), at this time, the third cover plate 7 releases the cover on the chip 10 and makes the chip 10 completely exposed, and the electrical contact pins 104 of the electronic imaging device are in contact with the electrical contacts of the chip 10.

[0060] When the developing cartridge is withdrawn from the designed installation position, the reset elastic member forces the second pressure bar 8 to move to the second designed position due to the first end of the second pressure bar 8 not being triggered (wherein the second pressure bar 8 is also considered not to be triggered during the developing cartridge is withdrawn from the designed installation position), so that the second pressure bar 8 pulls the third cover plate 7 along the first sliding groove 61 towards the chip 10; when the developing cartridge is withdrawn from the designed installation position, the second pressure bar 8 moves to the second designed position (as shown in Figure 6 and Figure 7 illustrated) under the action of the reset elastic member, at this time, the third cover plate 7 covers the chip 10, thereby preventing the chip 10 on the developing cartridge from being damaged, stained with dirt and other problems in the non-use state, so as to ensure that the chip 10 can reliably interact with the electric contact needle of the electronic imaging device during use of the developing cartridge, and play a role in prolonging the service life of the developing cartridge.

[0061] It can be seen that, due to the fixed connection between the second pressure bar and the third cover plate, when the second pressure bar is triggered by the triggering part, the second pressure bar can push the third cover plate along the first sliding groove away from the chip under the guidance of the second sliding groove, so that the third cover plate uncovers the chip, thereby enabling the third cover plate to be connected with the electric contact needle of the electronic imaging device; when the developing cartridge is removed from the drum frame or taken out from the processing cartridge installation cavity, the second pressure bar pulls the third cover plate along the first sliding groove towards the chip under the action of the reset elastic member, so as to cover the chip, thereby preventing the chip or the electric contact on it from being damaged, stained with dirt and other problems.

[0062] Processing cartridge embodiment

[0063] The processing cartridge includes a drum cartridge and a developing cartridge, wherein the developing cartridge is the developing cartridge described in the first embodiment or the second embodiment of the developing cartridge. The drum cartridge has a drum frame and a photosensitive drum, and the photosensitive drum is rotatably mounted on the drum frame about a third rotation axis of the photosensitive drum, which is parallel to the second rotation axis. The drum frame is detachably connected with the developing cartridge, and when the developing cartridge is installed on the drum frame, the photosensitive drum abuts against the developing roller of the developing cartridge.

[0064] The processing cartridge provided with the above developing cartridge can cover and protect the chip on the developing cartridge when the developing cartridge is in a non-use state, thereby preventing the chip or the electric contact on it from being damaged, stained with dirt and other problems; and when the developing cartridge is in a use state, the triggering part on the drum frame of the drum cartridge or in the processing cartridge accommodating cavity of the electronic imaging device can trigger the transmission assembly, so that the transmission assembly forces the cover assembly to uncover the chip, thereby enabling the chip to be connected with the electric contact needle in the electronic imaging device.

[0065] Electronic imaging device embodiment

[0066] An electronic imaging device includes a housing and a process cartridge, wherein the process cartridge is the process cartridge described in the above-described process cartridge embodiment. A process cartridge mounting cavity is provided within the housing, and the process cartridge is mounted within the cavity. A trigger portion is provided within the cavity or on the drum frame of the drum cartridge. When the developer cartridge is installed in a designed mounting position, the trigger portion triggers a transmission assembly and forces the transmission assembly to move to a first designed position. When the developer cartridge is removed from the designed mounting position, the transmission assembly, under the action of a return spring, forces the cover assembly to cover the chip.

[0067] It can be seen that the electronic imaging device provided with the above-mentioned processing box can cover and protect the chip on the developing box when the developing box is in a non-use state, thereby preventing the chip or the electrical contacts thereon from being damaged, contaminated by dirt, and other problems; and, when the developing box is in use, it can also trigger the transmission assembly through the trigger part on the drum box drum frame or in the processing box accommodating cavity of the electronic imaging device, so that the transmission assembly forces the cover assembly to release the cover of the chip, thereby enabling the chip to be connected to the electrical contact pins in the electronic imaging device.

[0068] Finally, it should be emphasized that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Developer cartridge, including: end caps; a chip mounted on the end cap; It is characterized in that the developing box also includes a protective cover unit, and the protective cover unit includes: a cover assembly, the cover assembly being mounted on the end cover; a transmission assembly connected between the cover assembly and the end cap, the transmission assembly having a first design position and a second design position, the transmission assembly being movable between the first design position and the second design position, the transmission assembly being triggerable and movable to the first design position, the transmission assembly in the first design position forcing the cover assembly to release the cover from covering the chip and expose the chip; a reset elastic member, wherein the reset elastic member can force the transmission assembly to move to the second design position, and the transmission assembly located at the second design position forces the cover assembly to cover the chip; The cover assembly includes a first cover plate and a second cover plate, the first cover plate is rotatably connected to the end cover around a first axis, the second cover plate is rotatably connected to the end cover around a second axis, and the transmission assembly is respectively connected to the first cover plate, the second cover plate and the end cover, or The end cover is provided with two first slide grooves, and the cover assembly is a third cover plate, which is respectively connected to the two first slide grooves. The third cover plate can slide along the first slide grooves, and the transmission assembly can drive the third cover plate along the first slide grooves away from the chip and release the cover on the chip.

2. The developing cartridge according to claim 1, wherein: When the cover assembly includes the first cover plate and the second cover plate, the first axis is parallel to the second axis, and in the first direction, the first axis and the second axis are located on both sides of the chip; When the transmission assembly moves to the first design position, the transmission assembly forces the first cover plate and the second cover plate to rotate away from the chip and release the covering of the chip; The transmission assembly moves to the second design position, and the transmission assembly forces the first cover plate and the second cover plate to rotate toward the chip and cover the chip.

3. The developing cartridge according to claim 2, wherein: The transmission assembly includes a slider, a first connecting rod, a second connecting rod and a first pressure rod, the slider is slidably connected to the end cover in a second direction, the second direction is perpendicular to the first direction, the two ends of the first connecting rod are respectively hinged to the first cover and the slider, the two ends of the second connecting rod are respectively hinged to the second cover and the slider, the first pressure rod is rotatably connected to the end cover around a third axis, and the third axis is parallel to the first axis; When the first end of the first pressure-bearing rod is triggered, the second end of the first pressure-bearing rod drives the slider to move toward the cover assembly in the second direction, so that the first connecting rod and the second connecting rod respectively drive the first cover plate and the second cover plate to rotate away from the chip and release the cover from the chip; The restoring elastic member can force the slider to move in the second direction away from the cover assembly, so that the first connecting rod and the second connecting rod respectively drive the first cover plate and the second cover plate to rotate toward the chip and cover the chip.

4. The developing cartridge according to claim 3, wherein: The first hinge point between the first connecting rod and the first cover plate is set close to the first axis, and the second hinge point between the second connecting rod and the second cover plate is set close to the second axis. In the first direction, the first hinge point and the second hinge point are both located between the first axis and the second axis.

5. The developing cartridge according to claim 3, wherein: The first end of the first pressure-bearing rod is bent relative to the second end of the first pressure-bearing rod and is away from the cover assembly. The third axis is located at the bending position of the first pressure-bearing rod.

6. The developing cartridge according to any one of claims 3 to 5, wherein: The reset elastic member is a first compression spring, and the first compression spring abuts between the slider and the end cover; A limiting portion is provided on the end cover, and the second end of the first pressure rod is located between the slider and the limiting portion.

7. The developing cartridge according to claim 1, wherein: When the third cover plate is slidably connected to the first slide groove, a second slide groove is further provided on the end cover, and the two first slide grooves are distributed on both sides of the chip along the axial direction of the developing roller of the developing cartridge, and the first slide grooves extend along a third direction, and the third direction is parallel to the substrate of the chip; The transmission assembly is a second pressure rod, a first end of the second pressure rod is fixedly connected to the third cover plate, the second pressure rod passes through the second slide groove, and the second slide groove is parallel to or inclined to the third direction; When the second end of the second pressure rod is triggered, the second pressure rod drives the third cover plate to move away from the chip along the first sliding groove and release the cover from the chip; The resetting elastic member can force the second pressure-bearing rod to move toward the second design position, so that the second pressure-bearing rod drives the third cover plate to move toward the chip along the first sliding groove and cover the chip.

8. The developing cartridge according to claim 7, wherein: The second pressure rod extends obliquely from the third cover plate toward the developing roller, and the second end of the second pressure rod is bent toward the developing roller relative to the first end of the second pressure rod; The reset elastic member is a second compression spring. The second pressure rod has a first clamping portion near its second end. The end cover has a second clamping portion. The second compression spring abuts between the first clamping portion and the second clamping portion.

9. A process cartridge, including a drum cartridge, characterized in that The process cartridge further comprises a developing cartridge according to any one of claims 1 to 8, the drum cartridge being connected to the developing cartridge, the photosensitive drum of the drum cartridge being adjacent to the developing roller of the developing cartridge.

10. An electronic imaging device comprising a housing, wherein a process cartridge mounting cavity is provided in the housing, wherein: The processing box as described in claim 9 is installed in the processing box installation cavity, and a trigger part is provided in the processing box installation cavity or on the drum frame of the drum box. When the developing box is installed to the designed installation position, the trigger part triggers the transmission assembly and forces the transmission assembly to move to the first designed position.

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