A developing cartridge

Abstract

The application discloses a developing box which is detachably installed on an image forming device, and the image forming device is provided with a detection device; the developing box comprises a box body, a power receiving device arranged at a first end of the box body, and the power receiving device is capable of receiving driving force from the image forming device; further comprising a transmission device in transmission connection with the power receiving device, and a pressing member arranged on the box body, and the transmission device deforms the pressing member, and the pressing member presses the detection device. Compared with the prior art, the application realizes the detection and identification of whether the developing box is used by the printer through the information data obtained by the detection device, so that the old developing box can be prevented from being placed into the image forming device, and the situation that the new and old developing boxes are confused can be prevented, in addition, the application can also detect the developing boxes of different models and different capacities, and is convenient for resetting and easy for recycling and processing, so that the resource loss is effectively reduced and the environment is avoided from being damaged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of image forming apparatuses, and particularly relates to a developing cartridge. BACKGROUND

[0002] An image forming apparatus of an electrophotographic method is provided with a developing device that develops an electrostatic latent image on a photosensitive drum using toner. The developing device has a developing roller that is rotatably supported in a housing, and develops by supplying toner accommodated in the housing from the developing roller to the photosensitive drum.

[0003] Further, a toner container that accommodates toner to be replenished to the developing device is provided in the image forming apparatus. If the toner in the toner container is all consumed, a new toner container filled with toner is exchanged.

[0004] If the developing roller of the developing device is aged, development failure occurs, and thus the developing device that has passed a certain period of time is exchanged for a new developing device in order to maintain image quality. Further, since the developing device that is integrally provided with a toner accommodating portion cannot develop when the toner in the toner accommodating portion is all consumed, a new developing device that is not used and is filled with toner is exchanged. Therefore, the conventional image forming apparatus has a structure in which the developing device is supported to be detachable so that the developing device can be exchanged.

[0005] In the process of exchanging the developing device, the following situations are encountered:

[0006] (1) In the case of exchanging a used developing device, a new developing device that is not used is usually installed in the image forming apparatus after the developing device is detached from the image forming apparatus. However, the used developing device is sometimes mistakenly installed in the image forming apparatus.

[0007] (2) Sometimes, a developing device that has passed the service life due to aging is refilled with toner, and the developing device is installed in the image forming apparatus. In the case of exchanging a used toner container, the used toner container is sometimes mistakenly installed in the image forming apparatus when the exchange is performed. SUMMARY

[0008] The present application aims to provide a developing cartridge that can prevent an old developing cartridge from being placed in an image forming apparatus, and thus prevent the situation in which a new developing cartridge is confused with an old developing cartridge.

[0009] In a first aspect, the present application provides a developing cartridge that is detachably installed in an image forming apparatus, wherein the image forming apparatus is provided with a detection device, and the developing cartridge comprises:

[0010] a cartridge body;

[0011] a power receiving device arranged at the first end of the cartridge, the power receiving device being capable of receiving driving force from the image forming device;

[0012] Further comprising:

[0013] a transmission device in transmission connection with the power receiving device;

[0014] a pressing member arranged on the cartridge, the transmission device deforming the pressing member, the pressing member pressing the detection device.

[0015] The developing cartridge as claimed in any one of the preceding claims, preferably, the transmission device comprises a first transmission connection part in transmission connection with the power receiving device, the driving force of the image forming device being transmitted to the first transmission connection part via the power receiving device; and a transmission part coaxially arranged on the first transmission connection part, a surface of the transmission part being formed with a first transmission surface for abutting against the pressing member.

[0016] The pressing member is formed with a second transmission surface facing the transmission device and a first pressing surface away from the transmission device, the first transmission surface abutting against the second transmission surface as the transmission device moves along a first preset movement path, the pressing member moving along a second preset movement path, the first pressing surface abutting against the detection device.

[0017] The developing cartridge as claimed in any one of the preceding claims, preferably, the transmission part is provided in plurality, the plurality of transmission parts being arranged at intervals along the first preset movement path.

[0018] The developing cartridge as claimed in any one of the preceding claims, preferably, a contact length of each of the first transmission surfaces with the second transmission surface is different from each other, and / or each of the first transmission surfaces is misaligned with each other along a normal direction of the first preset movement path.

[0019] The developing cartridge as claimed in any one of the preceding claims, preferably, the transmission part comprises a first transmission protrusion and a second transmission protrusion arranged in sequence along the first preset movement path, a gap being formed between the first transmission protrusion and the second transmission protrusion, wherein an arc length of the first transmission surface of the first transmission protrusion is smaller than an arc length of the first transmission surface of the second transmission protrusion, and / or the first transmission surface of the first transmission protrusion is misaligned with the first transmission surface of the second transmission protrusion along a normal direction of the first preset movement path.

[0020] The developing cartridge as claimed in any one of the preceding claims, preferably, the developing cartridge further comprises a limiting member, a first guide slope and a limiting surface are formed on the limiting member, the first guide slope and the limiting surface are located on a travel path of the pressure applying member, the first guide slope is arranged to face a travel direction of the pressure applying member, and the limiting surface is arranged to face away from the travel direction of the pressure applying member.

[0021] As the pressure applying member travels along the second preset travel path, the pressure applying member abuts against the first guide slope until the pressure applying member abuts against the limiting surface after passing the first guide slope.

[0022] The developing cartridge as claimed in any one of the preceding claims, preferably, the second end of the developing cartridge is provided with a second cover and a developing roller, at least a portion of the cover is made of an electrically conductive material, the developing roller comprises a developing roller shaft, at least a portion of the second cover supports the developing roller shaft, and the developing roller shaft directly or indirectly receives a voltage output by a power supply device in an image forming apparatus through the second cover.

[0023] The developing cartridge as claimed in any one of the preceding claims, preferably, the second cover is provided with a first electrically conductive part and a second electrically conductive part, the first electrically conductive part is electrically connected with the developing roller shaft to provide a first power supply voltage to the developing roller, a powder feeding roller provided in the developing cartridge comprises a powder feeding roller shaft, the second electrically conductive part is electrically connected with the powder feeding roller shaft to provide a second power supply voltage to the powder feeding roller, and the first power supply voltage and the second power supply voltage have different voltage values.

[0024] The developing cartridge as claimed in any one of the preceding claims, preferably, the first electrically conductive part comprises a first protruding block protruding from the second cover, a first spacing space is formed between an inner surface of the first protruding block and the developing roller shaft, the developing roller shaft directly contacts the first protruding block or contacts the first protruding block through a first deforming member provided in the first spacing space, an outer surface of the first protruding block is provided with a first guide member, and an axis of the first guide member is dislocated from an axis of the first protruding block.

[0025] The developing cartridge as claimed in any one of the preceding claims, preferably, the second electrically conductive part comprises a second protruding block protruding from the second cover, a second spacing space is formed between an inner surface of the second protruding block and the powder feeding roller shaft, and the powder feeding roller shaft directly contacts the second protruding block or contacts the second protruding block through a second deforming member provided in the second spacing space.

[0026] The developing cartridge as claimed in any one of the preceding claims, preferably, a voltage dividing module is provided between the first protruding block and the second protruding block, the second cover is made of an electrically conductive material, or the second guide member is made of an electrically conductive material, and the second electrically conductive member is connected with the powder feeding roller shaft.

[0027] The developing cartridge as described above, preferably, the developing cartridge comprises a powder outlet blade mounted on the cartridge body, the powder outlet blade abuts against the outer surface of the developing roller, the powder outlet blade is mounted on the cartridge body through a mounting hole, and the distance between the center line of the mounting hole and the rotation axis of the developing roller in the first direction of the developing cartridge is 6.5mm-16mm.

[0028] In a second aspect, the present application further provides another developing cartridge of a structure, which is detachably mounted on an image forming apparatus, the image forming apparatus is provided with a detection device, and the developing cartridge comprises:

[0029] a cartridge body;

[0030] a power receiving device arranged at the first end of the cartridge body, the power receiving device being capable of receiving driving force from the image forming apparatus;

[0031] further comprising:

[0032] a transmission device in transmission connection with the power receiving device;

[0033] a pressing member arranged on the cartridge body, the transmission device displaces along a predetermined path to drive the pressing member to press the detection device at least once.

[0034] The developing cartridge as described above, preferably, the transmission device comprises a second transmission connection part, the second transmission connection part is in transmission connection with the power receiving device, and the driving force of the image forming apparatus is transmitted to the second transmission connection part via the power receiving device.

[0035] the pressing member is formed with a second pressing surface, the pressing member moves along the first predetermined moving path with the transmission device, and the second pressing surface abuts against the detection device to apply force to the detection device.

[0036] The developing cartridge as described above, preferably, a plurality of pressing members are arranged along the first predetermined moving path.

[0037] The developing cartridge as described above, preferably, the contact lengths of each second pressing surface with the detection device are different from each other, and / or the second pressing surfaces of each pressing member are misaligned with each other along the normal direction of the first predetermined moving path.

[0038] The developing cartridge as described above, preferably, the pressure applying member comprises a first pressure applying protrusion and a second pressure applying protrusion arranged along the first preset moving path in sequence, a gap is formed between the first transmission protrusion and the second transmission protrusion, wherein along the normal direction of the first preset moving path, the second pressure surface of the first pressure applying protrusion is dislocated from the second pressure surface of the second pressure applying protrusion, and / or the arc length of the second pressure surface of the first pressure applying protrusion is greater than the arc length of the second pressure surface of the second pressure applying protrusion.

[0039] Compared with the prior art, the application utilizes the driving force provided by the original power receiving device of the developing cartridge, and drives the pressure applying member to move through the transmission of the transmission device to realize the contact with the detection device, and finally realizes the detection and identification of the printer on whether the developing cartridge is used through the information data obtained by the detection device, so that the old developing cartridge can be prevented from being placed into the image forming device, and the situation of confusing the new and old developing cartridges is prevented, in addition, the application can also detect the developing cartridges of different models and different capacities. Meanwhile, the scheme also has the advantages of convenient reset, simple structure, low space occupation and easy recycling and processing, so as to effectively reduce resource consumption and avoid environmental damage. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 is a perspective view of the developing cartridge with the first structure transmission device in embodiment one;

[0041] Figure 2 is a perspective view of the powder outletting knife in embodiment one of the application;

[0042] Figure 3 is a front view of the developing cartridge with the first structure transmission device in embodiment one of the application;

[0043] Figure 4 is the A-A sectional view of Figure 3 ;

[0044] Figure 5 is an exploded schematic view of the developing cartridge with the first structure transmission device in embodiment one;

[0045] Figure 6 is the enlarged view of A in Figure 5 ;

[0046] Figure 7 is a perspective view of the limiting member in embodiment one;

[0047] Figure 8 is a partial exploded schematic view of the developing cartridge with the first structure transmission device in embodiment one from another perspective;

[0048] Figure 9 isFigure 8 Enlarged view at B;

[0049] Figure 10 is a partial exploded view of the developing cartridge having the second structured transmission device in Example One;

[0050] Figure 11 is Figure 10 Enlarged view at C;

[0051] Figure 12 is a partial exploded view of the developing cartridge having the second structured transmission device in Example One from another perspective;

[0052] Figure 13 is Figure 12 Enlarged view at D;

[0053] Figure 14 is a timing diagram of the operation of the detection device of Example One in cooperation with a single transmission portion;

[0054] Figure 15 is a timing diagram of the operation of the detection device of Example One in cooperation with two transmission portions;

[0055] Figure 16 is an exploded structural view of the developing cartridge having the third structured transmission device of Example One and a drum assembly;

[0056] Figure 17 is Figure 16 Enlarged view at E;

[0057] Figure 18 is a perspective view of the first cover of Example One;

[0058] Figure 19 is an exploded structural view of the developing cartridge having the third structured transmission device of Example One and a drum assembly from another perspective;

[0059] Figure 20 is Figure 19 Enlarged view at F;

[0060] Figure 21 is a perspective view of the developing cartridge having the second electrical connection portion of the first structure in Example One;

[0061] Figure 22 is a partial exploded view of the developing cartridge having the second electrical connection portion of the first structure in Example One; Figure 1

[0062] Figure 23 is a partial exploded view of the developing cartridge having the second electrical connection portion of the first structure in Example One; Figure 2 ​​

[0063] Figure 24 is a partial sectional view of the developing cartridge having the second electrical connection portion of the first structure in Embodiment 1;

[0064] Figure 25 is a perspective view of the developing cartridge having the second electrical connection portion of the third structure in Embodiment 1;

[0065] Figure 26 is an exploded schematic view of the developing cartridge having the second electrical connection portion of the third structure in Embodiment 1;

[0066] Figure 27 is a partial schematic view of the developing cartridge having the second electrical connection portion of the third structure in Embodiment 1;

[0067] Figure 28 is a sectional view of the developing cartridge having the second electrical connection portion of the third structure in Embodiment 1;

[0068] Figure 29 is a perspective view of the developing cartridge in Embodiment 2;

[0069] Figure 30 is a partial exploded schematic view of the developing cartridge in Embodiment 2;

[0070] Figure 31 is a schematic view of the pressure applying member in an unpressing state in Embodiment 2; Figure 1 ;

[0071] Figure 32 is a schematic view of the pressure applying member in an unpressing state in Embodiment 2; Figure 2 ;

[0072] Figure 33 is a schematic view of the pressure applying member in a pressing state in Embodiment 2;

[0073] Figure 34 is a perspective view of the pressure applying member in an unpressing state in Embodiment 2;

[0074] Figure 35 is a perspective view of the pressure applying member in a pressing state in Embodiment 2;

[0075] Figure 36 is a timing chart of the operation state of the detection device and the single driving portion in Embodiment 2;

[0076] Figure 37 is a timing chart of the operation state of the detection device and the two driving portions in Embodiment 2;

[0077] Figure 38 is a schematic view of the pressure applying member in an unpressing state in Embodiment 3;

[0078] Figure 39 Structure diagram of the first structure of the pressure applying member in Embodiment 3 in a pressure applying state;

[0079] Figure 40 Structure diagram of the guide block in Embodiment 3;

[0080] Figure 41 Structure diagram of the second structure of the pressure applying member in Embodiment 3;

[0081] Figure 42 Timing chart of the operation state of the detection device in Embodiment 3 in cooperation with a single pressure applying member;

[0082] Figure 43 Timing chart of the operation state of the detection device in Embodiment 4 in cooperation with two pressure applying members;

[0083] Figure 44 Structure diagram of the second pressure applying protrusion in Embodiment 4 in a pressure applying state to the detection device;

[0084] Figure 45 Structure diagram of the detection device in Embodiment 4 in a state of being located in the gap between the first pressure applying protrusion and the second pressure applying protrusion;

[0085] Figure 46 Structure diagram of the first pressure applying protrusion in Embodiment 4 in a pressure applying state to the detection device;

[0086] Figure 47 Timing chart of the operation state of the detection device in Embodiment 3 in cooperation with a single pressure applying member;

[0087] Figure 48 Timing chart of the operation state of the detection device in Embodiment 4 in cooperation with two pressure applying members;

[0088] Explanation of reference numerals:

[0089] 10 - cartridge, 11 - developing roller, 111 - developing roller shaft, 12 - positioning protrusion, 13 - second guide member, 131 - guide portion, 132 - connecting portion, 14 - first elastic member, 15 - guide block, 151 - guide groove, 16 - elastic baffle, 17 - second elastic member, 18 - powder feeding roller, 181 - powder feeding roller shaft, 19 - powder discharge blade, 191 - blade holder, 192 - blade, 193 - blade holder mounting hole;

[0090] 20 - power receiving device, 21 - drive gear, 22 - developing roller gear, 23 - powder feeding roller gear, 24 - transmission gear, 25 - stirring holder gear;

[0091] 30 - transmission device, 31 - first transmission connecting part, 32 - transmission part, 321 - first transmission surface, 33 - second transmission connecting part, 331 - strip-shaped tooth part, 332 - strip-shaped notch part, 333 - sector-shaped tooth part, 334 - sector-shaped notch part, 335 - radial acceleration protruding part, 336 - first transmission protrusion, 337 - second transmission protrusion;

[0092] 40 - pressure applying part, 41 - second transmission surface, 42 - first pressure applying surface, 43 - second guide inclined surface, 44 - third guide inclined surface, 45 - second pressure applying surface, 451 - first straight line segment, 452 - first arc-shaped segment, 453 - second straight line segment, 46 - first pressure applying protrusion, 47 - second pressure applying protrusion;

[0093] 50 - limiting part, 51 - first guide inclined surface, 52 - limiting surface;

[0094] 60 - first cover;

[0095] 70 - second cover, 71 - first electrical connecting part, 711 - first protrusion, 712 - first deformation part, 72 - second electrical connecting part, 721 - second protrusion, 722 - second deformation part, 73 - first guide part;

[0096] 80 - supporting part, 81 - positioning hole;

[0097] 90 - detection device;

[0098] 100 - drum assembly. DETAILED DESCRIPTION

[0099] The embodiments described below are exemplary only, and are not to be construed as limiting the present application.

[0100] Referring to Figures 1 to 48 The present application provides a developing cartridge, which is detachably installed on an image forming apparatus having a detection device 90, and the developing cartridge comprises a cartridge body 10 and a power receiving device 20, a transmission device 30 and a pressure applying part 40 arranged on the cartridge body 10, wherein:

[0101] The cartridge body 10 is capable of containing a developer, and the power receiving device 20 is arranged on the cartridge body 10. Figures 1 to 4As shown, the developing roller 11, the powder feeding roller 18 and the stirring frame (not shown) are rotatably installed in the box body 10, and the box body 10 is provided with a powder discharging blade 19, which comprises a blade holder 191 and a blade 192 combined with each other, one end of the blade 192 is fixed to the blade holder 191, and the other end of the blade 192 is arranged to be in contact with the surface of the developing roller 11, the blade holder 191 is provided with a blade holder mounting hole 193, and the blade holder 191 is fixedly mounted on the box body 10 through the blade holder mounting hole 193. The thickness of the developer layer on the surface of the developing roller 11 and the charge amount of the developer particles can be controlled by adjusting the gap between the blade 192 and the developing roller 11. In the first direction of the developing cartridge, the distance L between the center line of the blade holder mounting hole 193 and the rotation axis of the developing roller shaft 111 is 6.5mm-16mm, preferably, the distance L between the center line of the blade holder mounting hole 193 and the axis of the developing roller shaft is 13.7mm, at this time, the thickness of the developer layer on the surface of the developing roller 11 is adapted, and the charge amount of the developer particles can make the developer particles transfer from the surface of the developing roller 11 to the surface of the photosensitive drum in the drum assembly under the action of the electric field force to develop. It should be noted that the first direction of the developing cartridge is defined as the height direction of the developing cartridge.

[0102] The power receiving device 20 is arranged at the first end of the box body 10, and the power receiving device 20 can receive driving force from the image forming device. In a feasible embodiment, referring to Figure 5 As shown, the power receiving device 20 comprises a driving gear 21, a developing roller gear 22, a powder feeding roller gear 23, a transmission gear 24 and a stirring frame gear 25. The driving gear 21 cooperates with the driving device in the electronic imaging device to receive driving force from the electronic imaging device. The developing roller gear 22 and the powder feeding roller gear 23 are respectively engaged with the driving gear 21. The transmission gear 24 is respectively engaged with the driving gear 21 and the stirring frame gear 25. When the driving gear 21 receives driving force provided by the power output unit (not shown in the figure) arranged in the image forming device, the driving gear 21 is driven to rotate, thereby driving the developing roller gear 22, the powder feeding roller gear 23 and the transmission gear 24 to rotate, respectively. The developing roller gear 22 and the powder feeding roller gear 23 correspondingly drive the developing roller 11 and the powder feeding roller 18 to rotate, respectively. The transmission gear 24 is further engaged with the stirring frame gear 25, thereby driving the stirring frame gear 25 to rotate. In another feasible embodiment, the transmission gear 24 can be cancelled, and the driving gear 21 is directly engaged with the stirring frame gear 25, which is not limited herein.

[0103] The transmission device 30 is in transmission connection with the power receiving device 20, and the power receiving device 20 can drive the transmission device 30 to move along a first preset moving path. In a feasible implementation, the stirring frame gear 25 is in power connection with the transmission device 30. When the driving gear 21 receives the driving force of the electronic imaging device, the driving gear 21 drives the transmission gear 24 to rotate, and then drives the stirring frame gear 25 to rotate, so as to finally realize the movement of the transmission device 30 along the first preset path. The first preset moving path can be linear movement of the transmission device 30, or rotation of the transmission device 30 along its own axis, or more types of movement, which are not limited here.

[0104] The pressing member 40 is used to abut against and apply force to the detection device 90 of the image forming device. The pressing member 40 has various connection modes, so as to be suitable for more use environments. In one connection mode, the pressing member 40 can be directly connected with the transmission device 30, so that the transmission device 30 drives the pressing member 40 to move along the first preset moving path. During the movement, the pressing member 40 contacts the detection device 90, and the pressing member 40 continuously applies force to the detection device 90. In another connection mode, the pressing member 40 is separately arranged from the transmission device 30. The pressing member 40 is located on the first preset moving path of the transmission device 30. With the movement of the transmission device 30, the transmission device 30 contacts the pressing member 40, and drives the pressing member 40 to move along a second preset moving path. During the movement, the pressing member 40 contacts the detection device 90.

[0105] In a feasible implementation, when the transmission device 30 moves to a predetermined position along the first preset moving path, the pressing member 40 is kept in a preset posture. When the transmission device 30 continues to move or stops moving, the pressing member 40 is kept in the preset posture. A new developing cartridge needs to pass through the above detection process to contact and press the detection device 90, while an old developing cartridge directly contacts and presses the detection device 90 when installed, so as to improve the recognition accuracy of the detection device 90 to the developing cartridge. Those skilled in the art can know that, in another implementation, after the pressing member 40 contacts the detection device 90, the pressing member 40 can not always abut against the detection device 90, which is not limited here.

[0106] When the developing cartridge that has reached the service life is refilled with toner and then undergoes recycling, the pressing member 40 only needs to be adjusted back to the initial position, and then the developing cartridge is installed back to the image forming device, so as to avoid that the used toner container is mistakenly installed in the image forming device.

[0107] Meanwhile, the pressing member 40 of different types of developing cartridges can provide different detection signals (such as multiple contact points, different contact time or different contact pressure, etc.) to the detection device 90, so as to distinguish different types (such as different capacities) of developing cartridges.

[0108] The application utilizes the driving force provided by the original power receiving device 20 of the developing cartridge, and drives the pressing member 40 to move through the transmission of the transmission device 30 to realize the contact with the detection device 90, and finally realizes the detection and identification of the printer on whether the developing cartridge is used through the information data obtained by the detection device 90, so that the old developing cartridge can be prevented from being placed into the image forming device, and the situation of confusing the new and old developing cartridges is prevented.

[0109] Meanwhile, the application can also detect different models of developing cartridges, and is convenient for resetting and easy for recycling and processing, so as to effectively reduce resource loss and avoid environmental damage. Compared with the existing detection structure, the application does not additionally increase too many complex components under the premise of fully utilizing the driving force of the original power receiving device 20, and has the characteristics of simple structure, easy assembly, low production cost, and low space occupation.

[0110] The following several embodiments are listed to further illustrate the content of the application, and those skilled in the art can know that more deformation modes can be designed according to the following embodiments, which all belong to the protection scope of the application.

[0111] Embodiment one

[0112] In this embodiment, the pressing member 40 is elastically arranged on the cartridge body 10, and the transmission device 30 deforms the pressing member, so that the pressing member 40 presses the detection device 90. The detection device 90 receives the trigger signal, and realizes the detection and identification of the printer on whether the developing cartridge is used through the information data obtained by the detection device 90.

[0113] Referring to Figure 6 and Figure 9 , the transmission device 30 includes a first transmission connecting part 31 and a transmission part 32. The first transmission connecting part 31 is in transmission connection with the power receiving device 20, and the driving force of the image forming device is transmitted to the first transmission connecting part 31 through the power receiving device 20. The first transmission connecting part 31 is in meshing connection with the stirring frame gear 25, so as to match the original power receiving device 20, reduce the excessive change to the original structure, and adapt to more use environments.

[0114] In this embodiment, the transmission part 32 is coaxially arranged on the first transmission connecting part 31. The surface of the transmission part 32 is formed with a first transmission surface 321 for abutting against the pressing member 40. Referring to Figure 6 and Figure 9 , the transmission part 32 is an arc-shaped block structure, and the arc-shaped block is provided with a weight-reducing hole to reduce the self-weight. The first transmission surface 321 is an arc surface, and the arc surface is in close contact with the movement path of the first transmission connecting part 31, so as to make the transmission part 32 and the pressing member 40 more smooth in the abutting process.

[0115] With reference to the drawings Figure 6 and Figure 9 As shown in FIG. 4, the pressing member 40 is formed with a second transmission surface 41 and a first pressing surface 42, the second transmission surface 41 is arranged to face the transmission device 30, and the first pressing surface 42 is arranged to face away from the transmission device 30. The first preset movement path of the transmission device 30 is the rotation of the first transmission connecting part 31 along its own axis direction. As the transmission device 30 moves along the first preset movement path, the transmission part 32 abuts against the pressing member 40, and the first transmission surface 321 abuts against the second transmission surface 41, thereby transmitting the force to the first pressing member 40. The first transmission surface 321 continuously contacts the second transmission surface 41, and as the transmission device 30 continuously moves, the pressing member 40 travels along the second preset movement path, and the first pressing surface 42 abuts against the detection device 90. The detection device 90 receives the trigger signal, and the recognition of the developing cartridge is completed.

[0116] With reference to the drawings Figure 14 As shown in FIG. 4, the detection device 90 is initially in an OFF state. After the developing cartridge is loaded into the image forming device, the first transmission connecting part 31 rotates along with the rotation of the stirring frame gear 25. After a certain period of time, the transmission part 32 abuts against the pressing member 40, thereby driving the pressing member 40 to move. When the first pressing surface 42 of the pressing member 40 contacts the detection device 90, the detection device 90 receives the trigger signal and adjusts the state to ON, and the new-old detection of the developing cartridge is completed. If it is an old developing cartridge, the detection device 90 will immediately receive the trigger signal and adjust the state to ON when the developing cartridge is loaded into the image forming device, and will not experience the process of driving the pressing member 40 to move by the transmission part 32 for a certain period of time.

[0117] When the transmission part 32 is provided with a plurality of transmission parts, gaps are provided between adjacent transmission parts 32. Correspondingly, the first transmission surface 321 is also provided with a plurality of first transmission surfaces 321, and the first transmission surfaces 321 are disconnected. There are at least three cases for the structure of each first transmission surface 321:

[0118] In the first case, the structures of each transmission part 32 are the same, and the gaps between adjacent transmission parts 32 are equal. With reference to FIG. 5, the first transmission surface 321 is provided with a plurality of first transmission surfaces 321, and the first transmission surfaces 321 are disconnected. Figure 15As shown, the detection device 90 is initially in the OFF state, after the developing cartridge is loaded into the image forming device, the first transmission connection part 31 rotates along with the rotation of the stirring frame gear 25, after a certain period of time, when the transmission part 32 abuts against the pressing piece 40, the pressing piece 40 is pushed to contact the detection device 90, the detection device 90 receives the trigger signal and adjusts the state to ON, when the gap between the transmission parts 32 moves to the position of the pressing piece 40, the pressing piece 40 is no longer subjected to the force, at this time, the detection device 90 is no longer in contact with the pressing piece 40, and the detection device 90 adjusts the state to OFF, when all the transmission parts 32 complete a cycle, the detection device 90 can receive multiple trigger signals at intervals, thereby identifying the developing cartridge, further, multiple types of developing cartridges can be identified, only by setting different numbers of transmission parts 32 for different types of developing cartridges, the detection device 90 can receive different trigger signals, thereby identifying multiple types of developing cartridges.

[0119] In the second case, referring to Figure 11 and Figure 13 With the rotation axis of the first transmission connection part 31 as the center, each transmission part 32 is eccentrically arranged, and the first transmission faces 321 of each transmission part 32 are staggered with respect to each other in the normal direction of the first preset movement path, so that the pressing piece 40 can exert different forces on the detection device 90, and the detection device 90 can obtain multiple data of different pressure values, thereby improving the identification accuracy of the detection device 90 for the developing cartridge.

[0120] As the transmission device 30 moves along the first preset movement path, the transmission part 32 at the head end abuts against the pressing piece 40, the first transmission face 321 abuts against the second transmission face 41, promoting the movement of the pressing piece 40, so that the first pressing face 42 exerts a force of a certain intensity on the detection device 90, and when the gap between the two transmission parts 32 moves to the second transmission face 41, the pressing piece 40 returns, and the force felt by the detection device 90 disappears, until the first transmission face 321 of the next transmission part 32 re-exerts a force of another intensity on the pressing piece 40, and so on, thereby achieving multiple triggering of the image forming device for the developing cartridge, and accurately identifying the high and low capacity of the developer in the cartridge body 10, thereby avoiding the mismatch between the developing cartridges of different capacities and the corresponding types of image forming devices.

[0121] In the third case, the contact lengths of the first transmission surface 321 of each transmission part 32 and the second transmission surface 41 are different from each other, the arc length of the first transmission surface 321 is proportional to the pressure duration obtained by the detection device 90, that is, the cycle duration of the detection working state in the detection device 90, so that the pressing member 40 exerts different time forces on the detection device 90, so as to improve the recognition accuracy of the detection device 90 on the developing cartridge. In a feasible implementation, along the rotation direction of the first transmission connecting part 31, the arc length of the first transmission surface 321 of each transmission part 32 along the length direction of itself increases or decreases in turn.

[0122] With the movement of the transmission device 30 along the first preset movement path, the transmission part 32 at the head end abuts against the pressing member 40, the first transmission surface 321 abuts against the second transmission surface 41, and the movement of the pressing member 40 is promoted, so that the first pressing surface 42 exerts a time force on the detection device 90. When the gap between the two transmission parts 32 moves to the second transmission surface 41, the pressing member 40 returns, and the force felt by the detection device 90 disappears. Until the first transmission surface 321 of the next transmission part 32 exerts another time force on the pressing member 40, and so on. In this way, the image forming device can trigger the developing cartridge multiple times, and can accurately identify the high and low capacity of the developer in the cartridge body 10, thereby avoiding the mismatch between the developing cartridges with different capacities and the corresponding image forming devices.

[0123] In the embodiment, the pressing member 40 is an elastic body, which is elastically deformed and connected to the cartridge body 10, so as to be elastically deformed after being subjected to the force of the transmission part 32, to offset along the direction of the second preset movement path, to accumulate elastic restoring force, and the second preset movement path is the elastic offset path of the pressing member 40. After the transmission part 32 is separated from the pressing member 40, the elastic restoring force is released, and the pressing member 40 tends to return to the initial position.

[0124] In order to prevent the pressing member 40 from automatically returning to the initial state after the transmission part 32 is separated from the pressing member 40, and causing misjudgment in the next detection, referring to Figure 6 、 Figure 7 、 Figure 9 、 Figure 11 、 Figure 13 、 Figure 17 、 Figure 20 , the developing cartridge further comprises a limiting member 50, referring to Figure 18 , the limiting member 50 is elastically deformed and arranged on the first end of the cartridge body 10, and the pressing member 40 and the limiting member 50 can be made of polyester plastic or elastic metal.

[0125] Referring to Figure 6 、 Figure 7 、 Figure 9 、 Figure 11 ,Figure 13 、 Figure 17 and Figure 20 As shown in

[0126] In this embodiment, referring to Figure 17 and Figure 20 , the limiting member 50 is formed with a wedge-shaped block, and the first guide slope 51 and the limiting surface 52 are arranged at opposite ends of the wedge-shaped block. After the transmission portion 32 is disengaged from the contact with the pressing member 40, if the pressing member 40 passes the first guide slope 51 at this time, the second transmission surface 41 of the pressing member 40 is in abutment with the limiting surface 52 under the action of the elastic restoring force, thereby limiting the movement of the pressing member 40 and avoiding the automatic return of the pressing member 40 to the initial state, which causes misjudgment for the next detection.

[0127] Continuing to Figure 6 , Figure 7 , Figure 9 , Figure 11 and Figure 13 , the extending direction of the limiting surface 52 can be perpendicular to the movement direction of the limiting member 50, so that the limiting member 50 can play a better blocking role. Only the limiting member 50 needs to be manually pried open, so that the limiting member 50 can smoothly return to the initial position, avoiding limiting the resetting of the pressing member 40. After the pressing member 40 returns to the initial position, the used developing cartridge can be recycled to add developing agent for use, avoiding resource waste and environmental pollution. At the same time, the limiting member 50 has a simple structure and is convenient to reset, thereby simplifying the structure of the developing cartridge, reducing the number of parts, and simplifying the assembly process.

[0128] Further, referring to Figure 17 and Figure 20As shown, the extension direction of the limiting surface 52 can also be inclined to the advancing direction of the limiting member 50, and the inclined surface can play a guiding role. When the cartridge 10 is filled through the powder filling port and is reloaded into the image forming device, during the return process of the pressing member 40, the pressing member 40 is in contact with the inclined limiting surface 52, and the pressing member 40 can slide along the limiting surface 52. Since the limiting surface 52 is inclined, the pressing member 40 will exert a component force on the limiting member 50, so that the limiting member 50 elastically deforms away from the pressing member 40. The pressing member 40 can more smoothly pass through the limiting member 50 to return to the initial position, thereby realizing the reloading of the cartridge 10. In this way, the planar structure of the conventional limiting surface 52 can avoid interference with the components of the image forming device during the installation process, thereby avoiding damage to the limiting member 50.

[0129] Referring to Figure 17 and Figure 20 As shown, the portion of the first pressing surface 42 of the pressing member 40 in contact with the limiting member 50 is provided with a second guide inclined surface 43, which can also play a similar time-saving and labor-saving role. Preferably, the second guide inclined surface 43 is parallel to the inclination direction of the first guide inclined surface 51. The transmission device 30 exerts a force on the pressing member 40, so that the pressing member 40 elastically deforms. The second guide inclined surface 43 is in contact with the first guide inclined surface 51. During the further deformation process of the pressing member 40, the second guide inclined surface 43 and the first guide inclined surface 51 are guided by the inclined surfaces, so that the pressing member 40 and the limiting member 50 are subjected to a component force, and the pressing member 40 and the limiting member 50 move away from each other, reducing the interference of the limiting member 50 with the deformation process of the pressing member 40. After the pressing member 40 passes through the limiting member 50, the second guide inclined surface 43 and the first guide inclined surface 51 are out of contact, and the limiting member 50 returns to the initial position to limit the return of the pressing member 40.

[0130] Further, referring to Figure 17 and Figure 20 As shown, the first pressing surface 42 of the pressing member 40 is also provided with a third guide inclined surface 44. The third guide inclined surface 44 guides the cartridge 10 to be loaded into the installation position in the image forming device. During the contact process with the components in the image forming device, the components in the image forming device exert a component force on the pressing member 40 through the guidance of the third guide inclined surface 44, so that the pressing member 40 elastically deforms to avoid the components in the image forming device. The pressing member 40 avoids interference with the components in the image forming device during installation, thereby avoiding damage to the pressing member 40.

[0131] In a feasible implementation, the transmission part 32 is an integral whole, as shown in Figure 6 , Figure 9 , Figure 17 and Figure 20 The specific working process is as follows:

[0132] After the first transmission connection part 31 receives the drive of the power receiving device 20, it rotates. The transmission part 32 also rotates with the rotation of the first transmission connection part 31 until the first transmission surface 321 of the transmission part 32 abuts against the second transmission surface 41 of the pressure member 40. Then, the pressure member 40 is driven to deform in the direction of the detection device 90. The pressure member 40 abuts against and applies force to the detection device 90. At this time, the detection device 90 is in the detection working state. This developing cartridge is a developing cartridge of normal capacity.

[0133] At the same time, the pressure-applying component 40 applies a force to the limiting component 50, and the limiting component 50 deforms in a direction away from the pressure-applying component 40; when the pressure-applying component 40 slides away from the first guide slope 51 of the limiting component 50, the limiting component 50 returns to its original position under the action of its own potential energy, so that the pressure-applying component 40 abuts against the limiting surface 52 of the limiting component 50. At this time, the pressure-applying component 40 cannot rebound in a direction away from the detection device 90.

[0134] In another feasible implementation, refer to Figure 11 as well as Figure 13 As shown, the transmission part 32 has two parts, namely a first transmission protrusion 336 and a second transmission protrusion 337. The first transmission protrusion 336 and the second transmission protrusion 337 are spaced apart along the rotation direction of the first transmission connection part 31. With the rotation axis of the first transmission connection part 31 as the center, the first transmission protrusion 336 and the second transmission protrusion 337 are eccentrically arranged. At the same time, the arc length of the first transmission surface 321 of the first transmission protrusion 336 is smaller than the arc length of the first transmission surface 321 of the second transmission protrusion 337. The specific working process is as follows:

[0135] The first transmission connection 31 rotates after receiving the drive from the power receiving device 20. The first transmission protrusion 336 and the second transmission protrusion 337 rotate in tandem with the rotation of the first transmission connection 31. Since there is a gap between the first transmission protrusion 336 and the second transmission protrusion 337, the working process is divided into a first detection working state, a pause state, and a second detection working state. This developing cartridge has high capacity and a long printing life. (Refer to...) Figure 10 as well as Figure 12 As shown, the details are as follows:

[0136] First test of working status

[0137] Firstly, the first transmission face 321 of the first transmission protrusion 336 abuts against the second transmission face 41 of the pressing member 40, the pressing member 40 is deformed towards the detection device 90; the pressing member 40 abuts against and exerts a force on the limiting member 50 to move towards the detection device 90, the limiting member 50 is deformed away from the pressing member 40; the first transmission face 321 of the first transmission protrusion 336 abuts against the first guide inclined surface 51 of the limiting member 50 and is deformed along the first guide inclined surface 51, and the first pressing surface 42 abuts against and exerts a force on the detection device 90, at this time, the detection device 90 is in the first detection working state.

[0138] pause state

[0139] The second transmission face 41 of the pressing member 40 is just located in the gap between the first transmission protrusion 336 and the second transmission protrusion 337, at this time, the detection device 90 is not subjected to the force of the pressing member 40, that is, the detection device 90 is in the pause state.

[0140] second detection working state

[0141] The first transmission face 321 of the second transmission protrusion 337 abuts against the second transmission face 41 of the pressing member 40; then, the pressing member 40 is deformed towards the detection device 90, the pressing member 40 abuts against and exerts a force on the detection device 90 in the +X axis direction; at the same time, the pressing member 40 exerts a force on the limiting member 50, the limiting member 50 is deformed away from the pressing member 40; when the pressing member 40 slides along the first guide inclined surface 51 of the limiting member 50, the limiting member 50 is reset under the action of its own potential energy, so that the pressing member 40 abuts against the limiting surface 52 of the limiting member 50, at this time, the pressing member 40 cannot rebound away from the detection device 90, at this time, the detection device 90 is in the second detection working state, and the time length or intensity of the pressure value data received by the detection device 90 in the first detection working state and the second detection working state is different.

[0142] In the embodiment, the first transmission connecting part 31 can be a full-tooth gear or a half-tooth gear, wherein: when the first transmission connecting part 31 is a full-tooth gear, the first transmission connecting part 31 is always in a rotating state, that is, the first transmission connecting part 31 always rotates following the rotation of the stirring frame gear 25; when the first transmission connecting part 31 is a half-tooth structure, that is, the first transmission connecting part 31 is disengaged from the stirring frame gear after rotating a certain number of turns (less than one turn), and then stops rotating.

[0143] reference Figures 21 to 28As shown, in the embodiment, the second end of the developing cartridge is provided with a second cover 70, the second cover 70 is formed with a first electrical connection part 71 and a second electrical connection part 72, the developing roller 11 includes a developing roller shaft 111, the powder feeding roller 18 includes a powder feeding roller shaft 181, the developing roller 11 and the powder feeding roller 18 are respectively supported on the cartridge body 10 along the length direction of the developing cartridge through the developing roller shaft 111 and the powder feeding roller shaft 181, wherein the first electrical connection part 71 is electrically connected with the developing roller 11 to provide a first power supply voltage to the developing roller shaft 111, the second electrical connection part 72 is electrically connected with the powder feeding roller shaft 181 to provide a second power supply voltage to the powder feeding roller 18, and the voltage values of the first power supply voltage and the second power supply voltage are different.

[0144] In an embodiment, referring to Figure 22 As shown, a support 80 is arranged between the second cover 70 and the developing cartridge, the support 80 is arranged on the cartridge body 10 in a detachable or fixed manner, the second end of the cartridge body 10 is provided with positioning protrusions 12, the number of the positioning protrusions 12 is at least one, the support 80 is provided with positioning holes 81, the number and distribution of the positioning holes 81 are adapted to the number and distribution of the positioning protrusions 12, the mounting protrusions are clamped into the positioning holes 81, and then the installation of the support 80 and the cartridge body 10 is completed.

[0145] In an embodiment, referring to

[0146] In an embodiment, referring to Figures 21 to 28 As shown, the two ends of the first electrical connection part 71 are respectively connected with the developing roller 11 and a first guide 73, the first electrical connection part 71 includes a first protrusion 711, when the second cover 70 and the support 80 are in the installation state, one side of the first protrusion 711 is configured as a partially closed structure with a hollow inside, and the end face of the developing roller shaft 111 and the inner surface of the first protrusion 711 have a first spacing space.

[0147] The first guide 73 is made of conductive material, the first guide 73 is arranged at the shaft end of the first protrusion 711 in the first electrical connection part 71, the first guide 73 and the first protrusion 711 are both cylindrical structures, the first guide 73 at least partially overlaps the first electrical connection part 71, and the axis of the first guide 73 is dislocated from the axis of the first protrusion 711.

[0148] In an embodiment, the developing roller shaft 111 directly contacts the first protrusion 711, the first protrusion 711 is formed of conductive material, thereby realizing electrical connection with the developing roller shaft 111.

[0149] In another embodiment, referring to Figures 21 to 24As shown, the first spacing space contains the first deformation member 712, and the first bump 711 and the first deformation member 712 are formed of conductive material. The first bump 711 is electrically connected to the developing roller shaft 111 through the first deformation member 712. The developing roller shaft 111 does not have to extend to abut against the first bump 711, so that the length of the developing roller shaft 111 is shortened, the material of the developing roller 11 can be reduced, and the cost is correspondingly reduced. The first spacing space not only prevents external dust or impurities from entering the inside of the cartridge 10, but also effectively protects the developing roller shaft 111, especially when the developing cartridge falls or collides with the outside, the first spacing space can effectively buffer the force.

[0150] The second end of the developing cartridge is also provided with a second guide member 13. One end of the second electrical connection part 72 is electrically connected to the powder feeding roller 18, and the other end of the second electrical connection part 72 is electrically connected to the first electrical connection part 71 or the second cover or the second guide member 13.

[0151] The developing roller shaft 111 and the powder feeding roller shaft 181 in the developing cartridge are independently supported by the support member 80, and are correctly installed with the drum assembly 100 through the first guide member 73 and the second guide member 13. The developing cartridge and the drum assembly 100 will not be misaligned during installation, or the conductive parts of the developing roller 11 or the powder feeding roller 18 in the developing cartridge will not be incorrectly electrically connected or electrically contacted with the contacts in the image forming apparatus due to vibration or relative movement between the developing cartridge and the drum assembly 100 during the working process of the developing cartridge. The stable electrical connection between the conductive parts of the developing roller 11 or the powder feeding roller 18 in the developing cartridge and the contacts in the image forming apparatus can be ensured.

[0152] In a possible implementation, when the second electrical connection part 72 is electrically connected to the first electrical connection part 71, a voltage dividing module (not shown) is arranged between the first electrical connection part 71 and the second electrical connection part 72. Specifically, the second electrical connection part 72 includes a second bump 721. When the second cover 70 and the support member 80 are in the installed state, one side of the second bump 721 is configured as a partially closed structure with a hollow inside. The second bump 721 and the second deformation member 722 are formed of conductive material. The second bump 721 is electrically connected to the powder feeding roller shaft 181 through the second deformation member 722. The powder feeding roller shaft 181 does not have to extend to abut against the second bump 721, so that the length of the powder feeding roller shaft 181 is shortened, the material of the powder feeding roller 18 can be reduced, and the cost is correspondingly reduced. The second spacing space not only prevents external dust or impurities from entering the inside of the cartridge, but also effectively protects the powder feeding roller shaft 181, especially when the developing cartridge falls or collides with the outside, the second spacing space can effectively buffer the force.

[0153] The first deforming member 712 and the second deforming member 722 are preferably conductive springs, or the first deforming member 712 and the second deforming member 722 can also be configured as other deforming conductive members, the voltage dividing module can be configured as a voltage dividing resistor, an integrated chip or a voltage dividing circuit composed of a resistor and a capacitor, and the developing roller shaft 111 and the powder feeding roller shaft 181 are configured as metal shafts with conductivity.

[0154] Since the powder feeding roller 18 and the developing roller 11 have different power supply voltages, the first protrusion 711 and the second protrusion 721 are electrically connected through the voltage dividing module. When the developing cartridge is installed in the image forming apparatus, a first power supply terminal (not shown in the figure) provided on the image forming apparatus is electrically connected to the developing roller shaft 111 in sequence through the first guide member 73, the first protrusion 711 and the first deforming member 712, and applies a predetermined developing bias voltage to the developing roller 11. The voltage applied to the first protrusion 711 is applied to the second protrusion 721 through the voltage dividing module. The voltage dividing module is configured to cause a potential difference between the developing bias voltage applied to the developing roller 11 and the supply bias voltage applied to the powder feeding roller 18. The second protrusion 721 is electrically connected to the powder feeding roller shaft through the second deforming member 722, and supplies power to the powder feeding roller 18. The powder feeding roller 18 and the developing roller 11 rotate under the action of a driving force. Since the developing bias voltage and the supply bias voltage have a pressure difference, the charged developer is transferred from the powder feeding roller 18 to the developing roller 11, and the developer is supplied to the photosensitive drum provided in the drum assembly 100 through the developing roller 11, so that the electrostatic latent image attached to the surface of the photosensitive drum is converted into a developed image.

[0155] In use, the drum assembly 100 is provided in the image forming apparatus. The developing cartridge is first installed with the drum assembly 100, and then the whole is installed in the image forming apparatus. During the installation of the developing cartridge and the drum assembly 100, a drum assembly support (not shown in the figure) provided on the drum assembly 100 is provided with a guide groove, and the first guide member 73 provided on the second cover 70 of the cartridge body 10 is guided to move to the developing cartridge installation position provided on the drum assembly support by the guide groove. The drum assembly support is provided with a positioning member (not shown in the figure). When the developing cartridge is guided and installed to the developing cartridge installation position by the first guide member 73, the first guide member 73 abuts against the positioning member to limit the movement of the first guide member 73 in the installation direction of the developing cartridge. During the installation of the whole formed by the developing cartridge and the drum assembly 100, i.e. the process of installing the process cartridge in the image forming apparatus, the first guide member 73 and the second guide member 13 provided on the developing cartridge are guided by the guide rails provided on the inner wall of the image forming apparatus, and cooperate with the guide members provided on the drum assembly 100 to achieve the installation of the developing cartridge and the drum assembly 100 in the predetermined installation position of the image forming apparatus.

[0156] In addition, the drum assembly 100 is also provided with a locking element (not shown). When the developing cartridge and the drum assembly 100 are in the installed state, the locking element is used to lock the developing cartridge to the drum assembly 100. The user can manually operate the locking element to release the locking of the developing cartridge and the drum assembly 100, and the developing cartridge can be removed from the drum assembly 100.

[0157] In another feasible implementation, refer to Figure 24 as well as Figure 25 As shown, the voltage divider module disposed between the first protrusion 711 and the second protrusion 721 is removed. When the second electrical connection part 72 and the second cover 70 are electrically connected, the second cover 70 is made of conductive material. The second cover 70 receives the specified bias voltage applied in the image forming apparatus and applies bias voltage to the developing roller 11 and the powder feeding roller 18 in sequence through the first deforming member 712 and the second deforming member 722 respectively.

[0158] In another feasible implementation, refer to Figure 27 as well as Figure 28 As shown, a support member 80 is provided on the same side as the second cover 70. At least a portion of the second cover 70 is made of conductive material. The developing roller shaft 111 is supported by the support member 80, and at least a portion of it enters the second cover 70. The first protrusion 711 and the first guide member 73 provided on the second cover 70 are constructed with a hollow internal structure. At least a portion of the developing roller shaft 111 enters the first protrusion 711 on the second cover 70. The power (bias voltage) output by the power supply device of the image forming apparatus is transmitted to the developing roller shaft 111 through the first guide member 73 and the first protrusion 711. That is, the outer surface of the first conductive member 73 is used to receive the power output by the power supply device and transmit it to the developing roller shaft 111 through the inner surface of the first protrusion 711, thereby realizing the power supply to the developing roller 11. The developing roller 11 can apply the bias voltage to the powder feeding roller shaft 181 through a voltage divider module in the above embodiment.

[0159] In this embodiment, the installation process of the developing cartridge and drum assembly 100, and the installation process of the processing cartridge and image forming apparatus are the same as those in the aforementioned embodiments, and will not be described again.

[0160] In another feasible embodiment, the second deforming member 722 disposed between the second protrusion 721 and the powder feeding roller shaft is omitted, and the pressure dividing module disposed between the first protrusion 711 and the second protrusion 721 is omitted. In this embodiment, the second guide member 13 is constructed to include a guide portion 131 and a connecting portion 132. One end of the connecting portion 132 is coupled to the powder feeding roller shaft in the powder feeding roller 18, and the other end is coupled to the guide portion 131. In this embodiment, the second guide member 13 is formed of a conductive element.

[0161] When the developing cartridge and the drum assembly 100 are assembled into the image forming apparatus, a first power supply terminal (not shown) provided on the image forming apparatus is electrically connected to the developing roller shaft through the first guide 73, the first protrusion 711 and the first deformation member 712 in sequence, and applies a predetermined developing bias voltage to the developing roller 11, and a second power supply terminal (not shown) provided on the image forming apparatus is electrically connected to the powder feeding roller shaft in the powder feeding roller 18 through the second guide 13, and applies a predetermined powder feeding bias voltage to the powder feeding roller 18, and the developing bias voltage and the powder feeding bias voltage have a voltage difference. The powder feeding roller 18 and the developing roller 11 rotate under the action of driving force, and the charged developer is transferred from the powder feeding roller 18 to the developing roller 11 due to the voltage difference between the developing bias voltage and the powder feeding bias voltage, and the developer is supplied to the photosensitive drum provided in the drum assembly 100 through the developing roller 11, so that the electrostatic latent image attached to the surface of the photosensitive drum is converted into a developed image.

[0162] Embodiment Two

[0163] Referring to Figures 29 to 35 In the embodiment, the difference from the first embodiment is the specific structure of the limiting member 50 and the pressing member 40. The limiting member 50 is a long strip-shaped body, and the first guide slope 51 and the limiting surface 52 are provided on opposite ends of the long strip-shaped body. The limiting member 50 is more likely to deform. The pressing member 40 is an L-shaped block formed by combining a horizontal plate and a vertical plate. The second transmission surface 41 of the pressing member 40 is formed on the surface of the horizontal plate, and the second pressing surface 45 of the pressing member 40 is formed on the bottom surface of the vertical plate.

[0164] In the embodiment, the first transmission connecting part 31 can be a full-tooth gear or a half-tooth gear. When the first transmission connecting part 31 is a full-tooth gear, the first transmission connecting part 31 is always in a rotating state, i.e., the first transmission connecting part 31 always rotates following the rotation of the stirring frame gear 25. When the first transmission connecting part 31 is a half-tooth structure, i.e., the first transmission connecting part 31 is disengaged from the stirring frame gear after rotating a certain number of turns (less than one turn), and then stops rotating.

[0165] Referring to Figure 34 and Figure 35 During the rotation of the first transmission connecting part 31, the transmission part 32 pushes the pressing member 40, so that the pressing member 40 is bent and deformed, and the first pressing surface 42 is in contact with the detection device 90. The detection device 90 receives a trigger signal. During this process, the transmission part 32 pushes the pressing member 40, so that the pressing member 40 is bent and deformed and is pressed against the first guide slope 51. The limiting member 50 is deformed so that the first guide slope 51 is disengaged from the first pressing surface 42. The pressing member 40 elastically recovers so that the second transmission surface 41 abuts against the limiting surface 52, thereby maintaining the deformed position of the pressing member 40. The detection device 90 always receives the trigger signal.

[0166] Specifically, the working process of the embodiment is as follows:

[0167] The first transmission connecting part 31 receives the driving rotation of the power receiving device 20, and the transmission part 32 also rotates with the rotation of the first transmission connecting part 31 until the first transmission surface 321 of the transmission part 32 abuts against the second transmission surface 41 of the pressing member 40. Then, the pressing member 40 is deformed in the direction of the detection device 90, and the pressing member 40 abuts against and exerts a force on the detection device 90. At this time, the detection device 90 is in a detection working state, and the developing cartridge is a normal capacity developing cartridge.

[0168] At the same time, the pressing member 40 exerts a force on the limiting member 50, and the limiting member 50 is deformed in the direction away from the pressing member 40. When the pressing member 40 slides away from the first guide inclined surface 51 of the limiting member 50, the limiting member 50 is reset under the action of its own potential energy, so that the pressing member 40 abuts against the limiting surface 52 of the limiting member 50. At this time, the pressing member 40 cannot rebound in the direction away from the detection device 90.

[0169] Referring to Figure 36 The detection device 90 is initially in an OFF state. After the developing cartridge is loaded into the image forming device, the first transmission connecting part 31 always rotates with the rotation of the stirring frame gear 25. After a certain period of time, the transmission part 32 abuts against the pressing member 40, thereby moving the pressing member 40. When the first pressing surface 42 of the pressing member 40 contacts the detection device 90, the detection device 90 receives a trigger signal and adjusts the state to ON, thereby completing the new-old detection of the developing cartridge. If the developing cartridge is an old one, the detection device 90 will immediately receive a trigger signal and adjust the state to ON when the developing cartridge is loaded into the image forming device, without experiencing the process of moving the pressing member 40 by the transmission part 32 for a certain period of time.

[0170] When the transmission part 32 is provided with a plurality of transmission parts, gaps are provided between adjacent transmission parts 32. Correspondingly, the first transmission surface 321 is also provided with a plurality of first transmission surfaces 321, and the first transmission surfaces 321 are disconnected. The structure of each first transmission surface 321 exists in at least three cases:

[0171] In the first case, the structures of the transmission parts 32 are the same, and the gaps between adjacent transmission parts 32 are equal. Referring to Figure 37As shown, the detection device 90 is initially in the OFF state, after the developing cartridge is loaded into the image forming device, the first transmission connection part 31 rotates along with the rotation of the stirring frame gear 25, after a certain period of time, when the transmission part 32 abuts against the pressing piece 40, the pressing piece 40 is pushed to contact the detection device 90, the detection device 90 receives the trigger signal and adjusts the state to ON, when the gap between the transmission parts 32 moves to the position of the pressing piece 40, the pressing piece 40 is no longer subjected to the force, at this time, the detection device 90 is no longer in contact with the pressing piece 40, and the detection device 90 adjusts the state to OFF, when all the transmission parts 32 complete a cycle, the detection device 90 can receive multiple trigger signals at intervals, thereby identifying the developing cartridge, further, multiple types of developing cartridges can be identified, only by setting different numbers of transmission parts 32 for different types of developing cartridges, the detection device 90 can receive different trigger signals, thereby identifying multiple types of developing cartridges.

[0172] In the second case, the transmission parts 32 are eccentrically arranged around the rotation central axis of the first transmission connection part 31, the first transmission faces 321 of the transmission parts 32 are staggered in the normal direction of the first preset movement path, the first transmission faces 321 of the transmission parts 32 can exert different forces on the pressing piece 40, so that the pressing piece 40 exerts different forces on the detection device 90, and the detection device 90 can obtain multiple different pressure values, thereby improving the identification accuracy of the detection device 90 for the developing cartridge.

[0173] As the transmission device 30 moves along the first preset movement path, the transmission part 32 at the head end abuts against the pressing piece 40, the first transmission face 321 abuts against the second transmission face 41, promoting the movement of the pressing piece 40, so that the first pressing face 42 exerts a force of a certain intensity on the detection device 90, when the gap between the two transmission parts 32 moves to the second transmission face 41, the pressing piece 40 returns, and the force felt by the detection device 90 disappears, until the first transmission face 321 of the next transmission part 32 re-exerts a force of another intensity on the pressing piece 40, and so on, thereby achieving multiple triggering of the developing cartridge by the image forming device, and accurately identifying the high and low capacity of the developer in the cartridge body 10, thereby avoiding the mismatch between the developing cartridges of different capacities and the corresponding types of image forming devices.

[0174] In the third case, the contact lengths of the first transmission surface 321 of each transmission part 32 and the second transmission surface 41 are different from each other, the arc length of the first transmission surface 321 is proportional to the pressure duration obtained by the detection device 90, that is, the cycle duration of the detection working state in the detection device 90, so that the pressing member 40 exerts different time forces on the detection device 90, so as to improve the recognition accuracy of the detection device 90 on the developing cartridge. In a feasible implementation, along the rotation direction of the first transmission connecting part 31, the arc length of the first transmission surface 321 of each transmission part 32 along the length direction of itself increases or decreases in turn.

[0175] With the movement of the transmission device 30 along the first preset movement path, the transmission part 32 at the head end abuts against the pressing member 40, the first transmission surface 321 abuts against the second transmission surface 41, which promotes the movement of the pressing member 40, so that the first pressing surface 42 exerts a time force on the detection device 90. When the gap between the two transmission parts 32 moves to the second transmission surface 41, the pressing member 40 returns, and the force felt by the detection device 90 disappears. Until the first transmission surface 321 of the next transmission part 32 re-exerts another time force on the pressing member 40, and so on. In this way, the image forming device can trigger the developing cartridge multiple times, and it can also accurately identify the high and low capacity of the developer in the cartridge body 10, avoiding the mismatch between the developing cartridges of different capacities and the corresponding models of the image forming device.

[0176] The developing cartridge of the embodiment has simple structure, reduces the number of parts and assembly processes, effectively reduces the product cost without affecting the recognition effect of the developing cartridge by the electronic imaging device, and the new structure of the developing cartridge is convenient to reset and easy to recycle and process, thereby effectively reducing resource consumption and avoiding environmental damage.

[0177] Embodiment Three

[0178] Referring to Figures 38 to 41 In the embodiment, the transmission device 30 includes a second transmission connecting part 33, which is in transmission connection with the power receiving device 20. The driving force of the image forming device is transmitted to the second transmission connecting part 33 via the power receiving device 20.

[0179] The pressing member 40 is formed with a second pressing surface 45. The pressing member 40 moves along the first preset movement path of the transmission device 30, and the first preset movement path of the transmission device 30 is the linear movement of the first transmission connecting part 31 along the axis direction thereof. The second pressing surface 45 abuts against the detection device 90 to exert a force on the detection device 90, the detection device 90 receives a trigger signal, and the recognition of the developing cartridge is completed.

[0180] The second pressing surface 45 and the detection device 90 are connected by a circular arc, which can make the connection more smooth, thereby reducing the impact on the overall equipment due to excessive friction. Specifically, the profile of the second pressing surface 45 includes a first straight segment 451, a first arc segment 452, and a second straight segment 453 connected in sequence, wherein the first arc segment 452 is used to apply pressure to the detection device 90, and the angle between the first straight segment 451 and the second straight segment 453 is an acute angle.

[0181] Referring to Figure 38 and Figure 39 The second transmission connection part 33 is a linear rack structure, one end of which is provided with a strip-shaped tooth part 331 and a strip-shaped notch part 332, and the pressing part 40 is arranged at the other end of the linear rack structure. When the strip-shaped tooth part 331 is engaged with the stirring frame gear 25, the rotation of the stirring frame gear 25 will drive the linear movement of the second transmission connection part 33, thereby matching the original power receiving device 20 to reduce excessive changes to the original structure, and further adapting to more use environments. During movement, the pressing part 40 contacts the detection device 90, and the detection device 90 obtains information data.

[0182] When the second transmission connection part 33 moves to the position where the strip-shaped notch part 332 is opposite to the stirring frame gear 25, the stirring frame gear 25 is disengaged from the strip-shaped tooth part 331, and the rotation of the stirring frame gear 25 will no longer drive the movement of the second transmission connection part 33. The pressing part 40 remains in a preset posture, and the transmission device 30 continues to move or stop moving, and the pressing part 40 remains in this preset posture. In this way, it can prevent the old developing cartridge from being placed into the image forming device, thereby preventing the confusion of new and old developing cartridges. Only a new developing cartridge can give the detection device 90 the correct signal, so that the detection device 90 can accurately identify the developing cartridge. When the used developing device is refilled with toner and recycled, the pressing part 40 needs to be adjusted back to the initial position, and the developing cartridge needs to be installed back into the image forming device, so as to avoid that the used toner container is mistakenly installed into the image forming device. Those skilled in the art can know that there is another embodiment, in which the pressing part 40 can not always contact the detection device 90 after contacting the detection device 90, which is not limited herein.

[0183] Further, referring to Figure 38 and Figure 39As shown, the developing cartridge further comprises a first elastic component 14 arranged on the cartridge body 10 and abutting against the second transmission connecting part 33. In the embodiment, the first elastic component 14 is a spring. In the initial state, the first elastic component 14 is naturally elongated. When the second transmission connecting part 33 moves along the first preset moving path, the first elastic component 14 is deformed and accumulates elastic restoring force. When the second transmission connecting part 33 needs to return to the initial position, the second transmission connecting part 33 can be provided with the elastic restoring force.

[0184] Further, referring to Figure 40 and Figure 41 As shown, the developing cartridge further comprises a guide block 15, which is provided with a guide groove 151 extending along the direction of the first preset moving path. The second transmission connecting part 33 is clearance-fitted in the guide groove 151, and the guide groove 151 plays a guiding and supporting role. The guide groove 151 is of L-shaped structure, and an opening is formed in the side wall of the guide block 15. The second transmission connecting part 33 can be offset out of the guide groove 151 through the opening. An elastic baffle 16 is arranged at the opening, and the elastic baffle 16 at least blocks part of the opening, which can provide the second transmission connecting part 33 with elastic clamping force.

[0185] During the process that the pressing member 40 is offset out of the guide groove 151 through the opening, the second transmission connecting part 33 abuts against the elastic baffle 16. In the embodiment, the elastic baffle 16 is a rubber material with elastic deformation recovery capability. During the process of driving the second transmission connecting part 33 to return, the second transmission connecting part 33 is pressed against the elastic baffle 16. After being pressed, the elastic baffle 16 is deformed, so that the second transmission connecting part 33 and the stirring rack gear 25 of the power receiving device 20 are respectively located in two straight lines, and the second transmission connecting part 33 can be relatively moved away from the stirring rack gear 25. Under the action of the elastic restoring force of the first elastic component 14, the second transmission connecting part 33 is quickly returned to the initial state position.

[0186] In the embodiment, the pressing member 40 is provided with one or more.

[0187] When the pressing member 40 is provided with one, the detection device 90 obtains a single trigger signal.

[0188] The specific working process is as follows:

[0189] The driving gear 21 of the power receiving device 20 receives driving force from the image forming device, and the driving gear 21 transmits the driving force to the stirring rack gear 25. The stirring rack gear 25 transmits the driving force to the strip-shaped tooth part 331 of the second transmission connecting part 33. The strip-shaped tooth part 331 drives the pressing member 40 to move linearly from the initial state position until the pressing member 40 is located at the detection position. At this time, the detection device 90 receives the trigger signal.

[0190] When the developing cartridge finishes printing, the second transmission connection part 33 is pressed towards the elastic baffle 16, the elastic baffle 16 is deformed after being pressed, and then the second transmission connection part 33 can be located in the same straight line with the stirring rack gear 25, so that the second transmission connection part 33 can move relative to the stirring rack gear 25 in a staggered manner, then the pressing piece 40 is manually pulled to move to the initial direction, and the second transmission connection part 33 can be more labor-savingly moved back under the action of the first elastic part 14 until the second transmission connection part 33 is reset to the initial state position by the pressing piece 40.

[0191] Referring to Figure 41 When the developing cartridge is loaded into the image forming apparatus, the second transmission connection part 33 always moves linearly following the rotation of the stirring rack gear 25, and after a certain period of time, the second transmission connection part 33 no longer moves, the second pressing surface 45 of the pressing piece 40 contacts the detection device 90, the detection device 90 receives a trigger signal and adjusts the state to ON, and the new-old detection of the developing cartridge is completed. If it is an old developing cartridge, the detection device 90 will immediately receive a trigger signal and adjust the state to ON when the developing cartridge is loaded into the image forming apparatus, and will not experience the process of moving the pressing piece 40 by the second transmission connection part 33 for a certain period of time.

[0192] When the pressing piece 40 is provided with multiple pressing pieces, gaps are provided between adjacent pressing pieces 40, and correspondingly, the second pressing surface 45 is also provided with multiple second pressing surfaces, the second pressing surfaces 45 are disconnected, and the structure of each second pressing surface 45 exists in at least three cases:

[0193] In the first case, referring to Figure 41 , the structures of the pressing pieces 40 are the same, and the gaps between the adjacent pressing pieces 40 are equal, referring to Figure 43 , the detection device 90 is initially in the OFF state, and after the developing cartridge is loaded into the image forming apparatus, the second transmission connection part 33 always moves linearly following the rotation of the stirring rack gear 25, and after a certain period of time, when the pressing piece 40 abuts against the detection device 90, the detection device 90 receives a trigger signal and adjusts the state to ON, and when the gap between the pressing pieces 40 moves to the position of the detection device 90, the detection device 90 is no longer in contact with the pressing piece 40, and the detection device 90 adjusts the state to OFF. When all the pressing pieces 40 complete a process, the detection device 90 can receive multiple trigger signals at intervals, so as to identify the developing cartridge, and further, to identify multiple types of developing cartridges. Only by setting different numbers of pressing pieces 40 for different types of developing cartridges, the detection device 90 can receive different trigger signals, so as to identify multiple types of developing cartridges.

[0194] In the second case, the second pressing surfaces 45 of the pressing members 40 are misaligned with each other along the normal direction of the first preset moving path, and the second pressing surfaces 45 of the pressing members 40 can exert different forces on the detection device 90, so that the detection device 90 can obtain data of multiple different pressure values, thereby improving the recognition accuracy of the detection device 90 to the developing cartridge.

[0195] As the transmission device 30 moves along the first preset moving path, the pressing member 40 at the head end abuts against the detection device 90, and the second pressing surface 45 exerts a force on the detection device 90. When the gap between the two pressing members 40 moves to the detection device 90, the force sensed by the detection device 90 is weakened or disappears, until the second pressing surface 45 of the next pressing member 40 exerts another force on the detection device 90, and so on, until the stirring frame gear 25 disengages from the bar-shaped tooth portion 331, thereby achieving multiple triggering of the image forming device to the developing cartridge, and accurately identifying the high or low capacity of the developer in the cartridge body 10, thereby avoiding the mismatching of the developing cartridges with different capacities and the corresponding image forming devices.

[0196] In the third case, the contact lengths of the second pressing surfaces 45 of the pressing members 40 with the detection device 90 are different from each other, and the arc length of the second pressing surface 45 is proportional to the duration of the pressure sensed by the detection device 90, that is, the cycle duration of the detection working state in the detection device 90, so that the pressing members 40 exert different forces on the detection device 90 for different durations, thereby improving the recognition accuracy of the detection device 90 to the developing cartridge. In a feasible implementation, the arc length of the second pressing surface 45 of each pressing member 40 along the length direction of the second pressing surface 45 increases or decreases in sequence along the traveling direction of the second transmission connection portion 33.

[0197] As the transmission device 30 moves along the first preset moving path, the pressing members 40 move synchronously, so that the second pressing surfaces 45 exert a force on the detection device 90 for a period of time. When the gap between the two pressing members 40 moves to the detection position, the force sensed by the detection device 90 is weakened or disappears, until the second pressing surface 45 of the next pressing member 40 exerts another force on the detection device 90 for another period of time, and so on, until the stirring frame gear 25 disengages from the bar-shaped tooth portion 331, thereby achieving multiple triggering of the image forming device to the developing cartridge, and accurately identifying the high or low capacity of the developer in the cartridge body 10, thereby avoiding the mismatching of the developing cartridges with different capacities and the corresponding image forming devices.

[0198] In a feasible implementation, as shown in FIGS. 1-3, the first transmission connection portion 32 is provided with two pressing members 40, and the second transmission connection portion 33 is provided with two pressing members 40. Figure 38 Figure 39 In a feasible implementation, as shown in FIGS. 1-3, the first transmission connection portion 32 is provided with two pressing members 40, and the second transmission connection portion 33 is provided with two pressing members 40. ​

[0199] The driving gear 21 of the power receiving device 20 receives driving force from the image forming device, and the driving gear 21 transmits the driving force to the stirring frame gear 25, and the stirring frame gear 25 transmits the driving force to the strip-shaped tooth portion 331 of the second transmission connection portion 33, and the strip-shaped tooth portion 331 drives the pressing member 40 to move linearly from the initial state position until the pressing member 40 is located at the detection position, at which time the detection device 90 abuts against the pressing member 40 to receive the trigger signal.

[0200] In another possible implementation, referring to Figure 41 The pressing member 40 is provided with two, which are the first pressing protrusion 46 and the second pressing protrusion 47, and the first pressing protrusion 46 and the second pressing protrusion 47 are arranged in the running direction of the second transmission connection portion 33, and the specific working process is as follows:

[0201] The driving gear 21 of the power receiving device 20 receives driving force from the image forming device, and the driving gear 21 transmits the driving force to the stirring frame gear 25, and the stirring frame gear 25 transmits the driving force to the strip-shaped tooth portion 331 of the second transmission connection portion 33, and the strip-shaped tooth portion 331 drives the pressing member 40 to move linearly from the initial state position, and since there is a gap between the first pressing protrusion 46 and the second pressing protrusion 47, the working process is divided into the first detection working state, the pause state and the second detection working state, and the developing cartridge has high capacity and high printing life, and the specific process is as follows:

[0202] The first detection working state

[0203] Firstly, the pressing member 40 moves linearly from the initial state position until the first pressing protrusion 46 is located at the detection position, at which time the detection device 90 receives the trigger signal by the action force applied by the first pressing protrusion 46.

[0204] The pause state

[0205] The detection device 90 is just located in the gap between the first pressing protrusion 46 and the second pressing protrusion 47, at which time the detection device 90 does not receive the action force of the pressing member 40, i.e. the detection device 90 is in the pause state;

[0206] The second detection working state

[0207] The second pressing protrusion 47 is located at the detection position, at which time the detection device 90 receives the trigger signal by the action force applied by the second pressing protrusion 47.

[0208] When the developing cartridge needs to be replaced, the second transmission connecting part 33 is pressed towards the elastic baffle 16, so that the elastic baffle 16 is deformed after being pressed, and then the second transmission connecting part 33 and the stirring rack gear 25 of the power receiving device 20 are located in two straight lines respectively, so that the second transmission connecting part 33 can be moved relative to the stirring rack gear 25 in a staggered manner, then the pressing piece 40 is manually pulled to move in the initial direction, and the second transmission connecting part 33 can be more labor-savingly moved back under the action of the first elastic part 14 until the pressing piece 40 is reset to the initial state position.

[0209] Embodiment Four

[0210] Referring to Figures 44 to 46 In this embodiment, different from the third embodiment, the second transmission connecting part 33 includes a fan-shaped tooth part 333 and a fan-shaped notch part 334, the fan-shaped tooth part 333 and the fan-shaped notch part 334 are arranged in a spaced manner along the rotation direction of the second transmission connecting part 33, and the pressing piece 40 is coaxially arranged with the second transmission connecting part 33 and rotates with the second transmission connecting part 33.

[0211] When the fan-shaped tooth part 333 is engaged with the stirring rack gear 25, the rotation of the stirring rack gear 25 will drive the rotation of the second transmission connecting part 33 along the axis direction of the second transmission connecting part 33, so as to match the original power receiving device 20, to reduce the excessive change to the original structure, and then adapt to more use environments, and in the moving process, the pressing piece 40 contacts the detection device 90, and the detection device 90 obtains a trigger signal.

[0212] When the second transmission connecting part 33 moves to the relative position of the fan-shaped notch part 334 and the stirring rack gear 25, the stirring rack gear 25 is disengaged from the fan-shaped tooth part 333, and the rotation of the stirring rack gear 25 will no longer drive the rotation of the second transmission connecting part 33, and the pressing piece 40 remains in the preset posture, and when the transmission device 30 continues to move or stops moving, the pressing piece 40 remains in the preset posture, so as to prevent the old developing cartridge from being placed into the image forming device, and then prevent the confusion of the new and old developing cartridges, and only the new developing cartridge can give the detection device 90 a correct signal, so as to improve the recognition accuracy of the detection device 90 to the developing cartridge, when the developing device that has reached the service life is refilled with toner and then recycled, the pressing piece 40 needs to be adjusted back to the initial position, and then the developing cartridge is installed back to the image forming device, so as to avoid that the used toner container is mistakenly installed in the image forming device.

[0213] Further, the developing cartridge further comprises a second elastic component 17 arranged on the cartridge body 10, in the embodiment, the second elastic component 17 is a torsion spring, the second transmission connection portion 33 is coaxially provided with a radial acceleration protruding portion 335, the radial acceleration protruding portion 335 is in abutment with the second elastic component 17, in the initial state, the second elastic component 17 is in the natural state, when the second transmission connection portion 33 moves along the first preset moving path, the second elastic component 17 is deformed and accumulates elastic restoring force, when the second transmission connection portion 33 needs to return to the initial position, the second transmission connection portion 33 can be provided with the elastic restoring force.

[0214] In the embodiment, the pressure applying member 40 is provided with one or more, wherein:

[0215] When the pressure applying member 40 is provided with one, the detection device 90 obtains a single trigger signal, and the specific working process is as follows: the driving gear 21 of the power receiving device 20 receives driving force from the image forming device, the driving gear 21 transmits the driving force to the stirring frame gear 25, the stirring frame gear 25 transmits the driving force to the sector gear portion 333 of the second transmission connection portion 33, the sector gear portion 333 drives the pressure applying member 40 to rotate from the initial state position until the pressure applying member 40 is located at the detection position, at this time, the detection device 90 receives the trigger signal.

[0216] Referring to Figure 47 As shown in the figure, the detection device 90 is initially in the OFF state, after the developing cartridge is loaded into the image forming device, the second transmission connection portion 33 always rotates with the stirring frame gear 25, after a certain period of time, the second pressure applying surface 45 of the pressure applying member 40 contacts the detection device 90, the detection device 90 receives the trigger signal and adjusts the state to ON, completing the new-old detection of the developing cartridge, if it is an old developing cartridge, the detection device 90 will immediately receive the trigger signal and adjust the state to ON when the developing cartridge is loaded into the image forming device, without experiencing the process of moving the pressure applying member 40 by the second transmission connection portion 33 for a certain period of time.

[0217] When the pressure applying member 40 is provided with multiple, gaps are provided between adjacent pressure applying members 40, correspondingly, the second pressure applying surface 45 is also provided with multiple, the second pressure applying surfaces 45 are disconnected, and the structure of each second pressure applying surface 45 exists in at least three cases:

[0218] In the first case, the structures of each pressure applying member 40 are the same, the gaps between adjacent pressure applying members 40 are equal, referring to Figure 48As shown, the detection device 90 is initially in the OFF state, after the developing cartridge is loaded into the image forming device, the first transmission connection part 31 rotates along with the rotation of the stirring rack gear 25, after a certain period of time, when the pressing pieces 40 abut against the detection device 90, the detection device 90 receives a trigger signal and adjusts the state to ON, when the gap between the pressing pieces 40 moves to the position of the detection device 90, at this time the detection device 90 is no longer in contact with the pressing pieces 40, the detection device 90 adjusts the state to OFF, when all the pressing pieces 40 complete a process, the detection device 90 can receive multiple trigger signals at intervals, so as to identify the developing cartridge, further, a plurality of types of developing cartridges can be identified, only by setting different numbers of pressing pieces 40 for different types of developing cartridges, the detection device 90 can receive different trigger signals, so as to identify a plurality of types of developing cartridges.

[0219] In the second case, the pressing pieces 40 are eccentrically arranged around the rotation central axis of the second transmission connection part 33, the second pressing surfaces 45 of the pressing pieces 40 are staggered in the normal direction of the first preset moving path, the second pressing surfaces 45 of the pressing pieces 40 can exert different forces on the detection device 90, so that the detection device 90 can obtain data of a plurality of different pressure values, so as to improve the identification accuracy of the detection device 90 to the developing cartridge.

[0220] With the movement of the transmission device 30 along the first preset moving path, the pressing piece 40 at the head end abuts against the detection device 90, the second pressing surface 45 exerts a force on the detection device 90, when the gap between the two second pressing surfaces 45 moves to the detection device 90, the force felt by the detection device 90 disappears, until the second pressing surface 45 of the next pressing piece 40 exerts another force on the detection device 90, and so on, until the stirring rack gear 25 and the sector tooth part 333 are disengaged, so as to realize multiple triggering of the image forming device to the developing cartridge, and accurately identify the high and low capacity of the developer in the cartridge body 10, and avoid the mismatching of the developing cartridges with different capacities and the corresponding types of image forming devices.

[0221] In the second case, the contact lengths of the second pressing surfaces 45 of the pressing pieces 40 and the detection device 90 are different from each other, the arc length of the second pressing surface 45 is proportional to the pressure duration obtained by the detection device 90, that is, the cycle duration of the detection state in the detection device 90, so that the pressing pieces 40 exert forces on the detection device 90 for different time durations, so as to improve the identification accuracy of the detection device 90 to the developing cartridge, in a feasible implementation manner, the arc lengths of the second pressing surfaces 45 of the pressing pieces 40 along the respective length directions increase or decrease in turn along the travel direction of the second transmission connection part 33.

[0222] With the transmission 30 moving along the first preset movement path, the pressure piece 40 moves synchronously, so that the second pressure surface 45 exerts a force on the detection device 90 for a period of time, and when the gap between the two pressure pieces 40 moves to the detection position, the force sensed by the detection device 90 disappears, until the second pressure surface 45 of the next pressure piece 40 re-exerts another period of time on the detection device 90, and so on, until the stirring rack gear 25 is disengaged from the sector tooth portion 333, realizing the multiple triggering of the image forming device to the developing cartridge, and it can also accurately identify the high and low capacity of the developer in the cartridge body 10, avoiding the mismatch of developing cartridges of different capacities with corresponding models of image forming devices.

[0223] In an available embodiment, as shown in Figures 44 to 46 The pressure piece 40 is provided with two, namely the first pressure protrusion 46 and the second pressure protrusion 47, which are arranged in the rotation direction of the second transmission connection portion 33, and the arc length of the second pressure surface 45 of the first pressure protrusion 46 is greater than that of the second pressure protrusion 47. The specific working process is as follows:

[0224] The driving gear 21 of the power receiving device 20 receives driving force from the image forming device, and the driving gear 21 transmits the driving force to the stirring rack gear 25, and the stirring rack gear 25 transmits the driving force to the sector tooth portion 333 of the second transmission connection portion 33, and the sector tooth portion 333 drives the pressure piece 40 to rotate from the initial state position along the +X axis direction. Because there is a gap between the first pressure protrusion 46 and the second pressure protrusion 47, the working process is divided into a first detection working state, a pause state and a second detection working state, and the developing cartridge has high capacity and high printing life, which is as follows:

[0225] First detection working state

[0226] Referring to Figure 44 First, the pressure piece 40 rotates from the initial state position until the first pressure protrusion 46 is located at the detection position, at which time the detection device 90 receives a trigger signal by the force exerted by the first pressure protrusion 46.

[0227] Pause state

[0228] Referring to Figure 45 The detection device 90 is located in the gap between the first pressure protrusion 46 and the second pressure protrusion 47, at which time the detection device 90 is not subjected to the force of the pressure piece 40, i.e. the detection device 90 is in a pause state;

[0229] Second detection working state

[0230] Referring to Figure 46As shown, the second pressing protrusion 47 is located at the detecting position, at which the detecting device 90 receives a trigger signal under the pressure applied by the second pressing protrusion 47.

[0231] The above detailed description of the embodiments shown in the drawings illustrates the structure, features and effects of the present application. The above description is only the preferred embodiments of the present application, but the present application is not limited to the embodiments shown in the drawings. Any changes or modifications made in accordance with the concept of the present application, or equivalent embodiments with equivalent changes, are still within the scope of the present application.

Claims

1. A developing cartridge detachably installed in an image forming apparatus, wherein the image forming apparatus is provided with a detection device, the developing cartridge comprising: a cartridge body; a power receiving device provided at a first end of the cartridge body, the power receiving device being capable of receiving driving force from the image forming apparatus; characterized in that the developing cartridge further comprises: a transmission device in transmission connection with the power receiving device; and a pressing member provided on the cartridge body, wherein the transmission device deforms the pressing member, and the pressing member presses the detection device; wherein the transmission device comprises a first transmission connection portion and a transmission portion, the first transmission connection portion is in transmission connection with the power receiving device, and the driving force of the image forming apparatus is transmitted to the first transmission connection portion via the power receiving device; the transmission portion is coaxially provided on the first transmission connection portion, and a surface of the transmission portion is formed with a first transmission surface for abutting against the pressing member; wherein the pressing member is formed with a second transmission surface and a first pressing surface, the second transmission surface faces the transmission device, and the first pressing surface is away from the transmission device, wherein as the transmission device moves along a first preset movement path, the first transmission surface abuts against the second transmission surface, the pressing member moves along a second preset movement path, and the first pressing surface abuts against the detection device; wherein the developing cartridge is further provided with a limiting member, the limiting member is formed with a first guide inclined surface and a limiting surface, the first guide inclined surface and the limiting surface are located on the movement path of the pressing member, the first guide inclined surface faces the movement direction of the pressing member, and the limiting surface is away from the movement direction of the pressing member; as the pressing member moves along the second preset movement path, the pressing member abuts against the first guide inclined surface until the pressing member abuts against the limiting surface after passing the first guide inclined surface; wherein the transmission portion is provided with a plurality of transmission portions, and the plurality of transmission portions are spaced apart along the first preset movement path; wherein the contact lengths of the first transmission surfaces and the second transmission surfaces are different from each other, and / or the first transmission surfaces are misaligned with each other along the normal direction of the first preset movement path; wherein the transmission portion comprises a first transmission protrusion and a second transmission protrusion which are sequentially arranged along the first preset movement path, and a gap is formed between the first transmission protrusion and the second transmission protrusion, wherein the arc length of the first transmission surface of the first transmission protrusion is smaller than the arc length of the first transmission surface of the second transmission protrusion, and / or the first transmission surface of the first transmission protrusion is misaligned with the first transmission surface of the second transmission protrusion along the normal direction of the first preset movement path; wherein a second cover and a developing roller are provided at a second end of the developing cartridge, at least a portion of the second cover is made of conductive material, the developing roller comprises a developing roller shaft, at least a portion of the second cover supports the developing roller shaft, and the developing roller shaft directly or indirectly receives voltage output by a power supply device in the image forming apparatus via the second cover. ​ ​ ​ ​ ​ ​ ​ ​ 2. The process cartridge according to claim 1, wherein ​ 3. The process cartridge of claim 2 wherein, ​ 4. The process cartridge of claim 3 wherein, ​ 5. The process cartridge of claim 1, wherein, ​ 6. The process cartridge of claim 5 wherein, The second protective cover is provided with a first electric connection part and a second electric connection part. The first electric connection part is electrically connected with the developing roller shaft to provide a first power supply voltage to the developing roller. A powder feeding roller provided in the developing cartridge includes a powder feeding roller shaft. The second electric connection part is electrically connected with the powder feeding roller shaft to provide a second power supply voltage to the powder feeding roller. The first power supply voltage and the second power supply voltage have different voltage values.

7. The process cartridge of claim 6 wherein, The first electric connection part includes a first protruding block protruding from the second protective cover. An inner surface of the first protruding block and the developing roller shaft form a first spacing space. The developing roller shaft is in direct contact with the first protruding block or in contact with the first protruding block through a first deformation member provided in the first spacing space. An outer surface of the first protruding block is provided with a first guide member. An axis of the first guide member is dislocated from an axis of the first protruding block.

8. The process cartridge of claim 7 wherein, The second electric connection part includes a second protruding block protruding from the second protective cover. An inner surface of the second protruding block and the powder feeding roller shaft form a second spacing space. The powder feeding roller shaft is in direct contact with the second protruding block or in contact with the second protruding block through a second deformation member provided in the second spacing space.

9. The process cartridge of claim 8 wherein, The first protruding block and the second protruding block are provided with a voltage dividing module. The second end of the developing cartridge is further provided with a second guide member. The second protective cover is made of an electrically conductive material. The second guide member is made of an electrically conductive material. The second guide member is connected with the powder feeding roller shaft.

10. The process cartridge of claim 5 wherein, The developing cartridge includes a powder outlet knife mounted on the cartridge body. The powder outlet knife is in abutment with an outer surface of the developing roller. The powder outlet knife is mounted on the cartridge body through a mounting hole. In the first direction of the developing cartridge, the distance between the center line of the mounting hole and the rotation axis of the developing roller is 6.5mm-16mm.

Images