Developing cartridge

Abstract

The utility model relates to a developing box detachably mounted in a main component of imaging equipment, the imaging equipment is provided with a detection device and a grounding end, and the developing box comprises a developing frame, a driving device and a driving device, a first end cap mounted on the developing frame; a developing roller rotatably disposed on the developing frame; the doctor blade is fixedly mounted on the developing frame and is in contact with the outer surface of the developing roller; the powder feeding roller is rotatably arranged on the developing frame and is used for supplying the carbon powder contained in the powder bin to the developing roller; the developing box further comprises a detected device, the detected device comprises a conductive assembly and a first voltage control component, the conductive assembly is electrically connected with the detecting device in the state that the developing box is installed on the imaging equipment, the first voltage control component is used for controlling on-off of electric connection between the detecting device and the grounding end, and therefore the detecting precision of the developing box is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of electrophotographic imaging, especially to a developing box which can be detachably installed into an electrophotographic device. BACKGROUND

[0002] As is known, the imaging device comprises a main assembly for installing the developing box / drum box and a detection apparatus 50 for judging the information of the developing box installed in the imaging device. For example, the detection apparatus 50 is used to judge whether the developing box newly installed into the imaging device is a new product or the size capacity of the developing box and the like information.

[0003] The prior art provides an imaging device, as shown in the figure, the detection apparatus 50 comprises a detection unit 501, a power supply 502 and a switch member 503, the detection unit 501, the power supply 502 and the switch member 503 can be electrically connected to form a circuit capable of electrically conducting, and the switch member 503 is used to control the on-off of the circuit. Figures 1-3 As shown in the figure, the switch member 503 is at least partly made of conductive material, which is arranged as a movable member and can have an initial position, a closed position and an open position; as shown in the figure, when at the initial position (also called the open position), the switch member 503 is in a state of not conducting the circuit; as shown in the figure, at the closed position, the switch member 503 closes the circuit, the circuit is conducted, and the detection unit 501 can detect the electric signal; as shown in the figure, at the open position, the switch member 503 is in a state of not conducting the circuit. Figure 1 Figure 2 Figure 3 When the movable member is switched between the closed position and the open position, the electric signal (such as voltage) of the detection unit 501 will change, so as to judge the information of the developing box; the information of the developing box refers to whether the developing box is a new product, or the size, capacity, model and the like information of the developing box.

[0004] The prior art provides a developing box which can be detachably installed into the above-mentioned imaging device, the developing box is provided with a first driving force receiving member and a detected apparatus, the first driving force receiving member receives driving force from the imaging device to rotate, the detected apparatus can be moved in response to the rotation of the first driving force receiving member, the detected apparatus can move the switch member 503 between the closed position and the open position, so that the electric signal of the internal circuit of the detection apparatus changes, so that the developing box is detected; the developing box thus arranged has more transmission mechanisms, and the movement of the detected apparatus is not stable during the movement of the detected apparatus, and even the detected apparatus is prone to reciprocating motion, which will affect the detection accuracy of the developing box. TECHNICAL FIELD

[0005] The developing box provided by the utility model can at least solve at least one of the above technical problems, and the specific technical solutions are as follows: ​​

[0006] A developing cartridge is detachably installed into a main assembly of an image forming device, the image forming device being provided with a detection apparatus and a grounding terminal; the developing cartridge comprises:

[0007] A developing frame, internally provided with a powder tank for accommodating toner;

[0008] A first end cover, installed on the developing frame;

[0009] A developing roller, rotatably provided on the developing frame;

[0010] A powder outlet blade, fixedly installed on the developing frame, and in contact with an outer surface of the developing roller;

[0011] A powder feeding roller, rotatably provided on the developing frame, for supplying the toner accommodated in the powder tank towards the developing roller;

[0012] The developing cartridge further comprises:

[0013] The detection apparatus, the detection apparatus comprising a conductive assembly and a first voltage control member, the conductive assembly being electrically connected with the detection apparatus in a state where the developing cartridge is installed into the image forming device, and the first voltage control member being used for controlling the on-off of the electrical connection between the detection apparatus and the grounding terminal; thereby, further improving the detection precision of the developing cartridge detection.

[0014] In some embodiments, the developing cartridge has opposite first and second end portions along a longitudinal direction of the developing cartridge;

[0015] The conductive assembly further comprises first, second, third and fourth conductive members which are electrically connected in sequence, the first conductive member having at least a portion provided at the first end portion, the second conductive member being electrically connected with the first conductive member, and at least a portion of the second conductive member extending between the first and second end portions of the developing cartridge, the third conductive member being electrically connected with the second conductive member, and at least a portion of the third conductive member being located at the second end portion of the developing cartridge, the fourth conductive member being selectively electrically connected with the third conductive member, and the fourth conductive member being capable of being electrically connected with the grounding terminal; wherein

[0016] The second conductive member is at least one of the developing roller, the powder feeding roller and the powder outlet blade; thereby, by dividing the conductive members and arranging them at different positions of the developing cartridge, the electrical load of the conductive members is dispersed, and the stability and precision of the developing cartridge detection are improved.

[0017] In some embodiments, the developing cartridge has opposite first and second end portions along a longitudinal direction of the developing cartridge;

[0018] The conductive assembly further comprises a first conductive member, a second conductive member, a third conductive member and a fourth conductive member which are electrically connected in sequence, at least a part of the first conductive member is arranged at the first end portion, the second conductive member is electrically connected with the first conductive member, and at least a part of the second conductive member extends between the first end portion and the second end portion of the developing cartridge, the third conductive member is electrically connected with the second conductive member, and at least a part of the third conductive member is located at the second end portion of the developing cartridge, the fourth conductive member is electrically connected with the third conductive member, and the fourth conductive member is selectively electrically connected with the grounding end; wherein

[0019] The second conductive member is at least one of a developing roller, a powder feeding roller and a powder outlet knife; thereby, by arranging the conductive members at different positions of the developing cartridge, the power load of the conductive members is dispersed, and the stability and accuracy of the developing cartridge detection are improved.

[0020] In some embodiments, the first conductive member is in contact with the longitudinal end face of the powder outlet knife; thereby, the stability of the power transmission from the image forming device to the developing cartridge is improved, and the detection accuracy of the developing cartridge detection is further improved.

[0021] In some embodiments, the first conductive member is in contact with the longitudinal end face of the developing layer of the developing roller or the longitudinal end face of the developing roller shaft; thereby, the stability of the power transmission from the image forming device to the developing cartridge is improved, and the accuracy of the developing cartridge detection is further improved.

[0022] In some embodiments, the third conductive member is in electrical contact with at least one of the powder feeding roller and the powder outlet knife; thereby, the stability of the power transmission from the image forming device to the developing cartridge is improved, and the accuracy of the developing cartridge detection is further improved.

[0023] In some embodiments, the developing cartridge further comprises a first force receiving portion arranged at the first end portion, the first force receiving portion is used for receiving a driving force from the image forming device;

[0024] The first voltage control member is provided with a first driving portion for driving the third conductive member and the fourth conductive member to be in electrical contact;

[0025] In the longitudinal direction of the developing cartridge, the first force receiving portion has a first end face, the first driving portion has a second end face, the first end face and the second end face are not flush, and the distance between the first end face and the second end face is not less than 13mm; thereby, the stress influence caused by the close distance between the first force receiving portion and the first driving portion is avoided.

[0026] In some embodiments, the developing cartridge further comprises a relief portion arranged on the first end cover, at least a part of the first voltage control member can be exposed outward through the relief portion; thereby, the user can observe the state of the first voltage control member without disassembling the first end cover.

[0027] In some embodiments, the developing cartridge comprises a first driving force receiving member that receives a driving force from the image forming device to rotate; the powder outletting blade comprises a blade holder and a blade, the blade holder is fixedly installed on the developing frame, and the blade is fixedly installed on the blade holder; the blade holder comprises a first part and a second part connected to each other, a bending portion is formed between the first part and the second part, and the bending portion is located outside the projection range of the first driving force receiving member in the longitudinal direction of the developing cartridge; thereby, the influence of the vibration generated by the first force receiving part on the electrical contact of the power receiving member and the power outputting member is reduced.

[0028] In some embodiments, the detection device comprises a detection unit capable of forming a conduction circuit, a power supply and a switching member capable of moving between a closed position and an open position, and the conductive assembly is capable of electrically connecting the switching member and the ground end; thereby, the stability of the developing cartridge detection is improved, and accidental disengagement of the first voltage control member and false recognition of the developing cartridge are avoided.

[0029] Compared with the prior art, the developing cartridge provided by the utility model can improve the stability and detection accuracy of the developing cartridge detection. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is the internal circuit schematic diagram of the detection device when the switching member of the utility model is in the open position (initial position);

[0031] Figure 2 is the internal circuit schematic diagram of the detection device when the switching member of the utility model is in the closed position;

[0032] Figure 3 is the internal circuit schematic diagram of the detection device when the switching member of the utility model is in the open position (initial position);

[0033] Figure 4 is the structure schematic diagram of the developing cartridge of the utility model embodiment 1 when the developing cartridge is installed to the image forming device;

[0034] Figure 5a is the structure diagram of the image forming device of the utility model embodiment 1;

[0035] Figure 5b is the structure schematic diagram of the switching member and the swing rod of the utility model embodiment 1;

[0036] Figure 6 is the structure schematic diagram of the developing cartridge of the utility model embodiment 1 when the developing cartridge is installed in the drum cartridge;

[0037] Figure 7 is the structure schematic diagram of the developing cartridge of the utility model embodiment 1 from another angle when the developing cartridge is installed in the drum cartridge;

[0038] Figure 8is a structural schematic view of the developing box of the embodiment 1 of the utility model;

[0039] Figure 9 is a local structural schematic view of one end of the developing box of the embodiment 1 of the utility model;

[0040] Figure 10 is a local structural schematic view of the other end of the developing box of the embodiment 1 of the utility model;

[0041] Figure 11 is a structural schematic view of another angle of the developing box of the embodiment 1 of the utility model;

[0042] Figure 12 is the inside circuit schematic view of the detecting device when the developing box of the embodiment 1 of the utility model is not installed to the imaging equipment;

[0043] Figure 13 is the circuit schematic view formed between the detecting device and the detected device when the developing box of the embodiment 1 of the utility model is installed to the imaging equipment;

[0044] Figure 14 is the circuit schematic view when the detecting device and the ground end are conducted when the developing box of the embodiment 1 of the utility model is installed to the imaging equipment;

[0045] Figure 15 is the structural schematic view when the developing box of the embodiment 2 of the utility model is installed to the imaging equipment;

[0046] Figure 16 is the structural schematic view when the developing box of the embodiment 3 of the utility model is not installed to the imaging equipment;

[0047] Figure 17 is the structural schematic view when the developing box of the embodiment 3 of the utility model is installed to the imaging equipment;

[0048] Figure 18 is the structural schematic view of the developing box of the embodiment 4 of the utility model;

[0049] Figure 19 is the schematic view after hiding part structure of the developing box of the embodiment 4 of the utility model;

[0050] Figure 20 is the inside circuit schematic view of the detecting device when the developing box of the embodiment 4 of the utility model is not installed to the imaging equipment;

[0051] Figure 21 is the circuit schematic view formed between the detecting device and the detected device when the developing box of the embodiment 4 of the utility model is installed to the imaging equipment;

[0052] Figure 22Is the schematic diagram of the circuit when the developing box of the embodiment 4 of the utility model is installed into the imaging equipment, and the detection device and the grounding end are conducted;

[0053] Figure 23 Is the whole structure schematic diagram of the developing box of the embodiment 5 of the utility model;

[0054] Figure 24 Is the partial structure exploded schematic diagram of the developing box of the embodiment 5 of the utility model;

[0055] Figure 25 Is the structure schematic diagram of the assembly state of the first end cover, movable piece, third conductive member and fourth conductive member of the developing box of the embodiment 5 of the utility model;

[0056] Figure 26 Is the structure schematic diagram of the disassembly state of the first end cover, movable piece, third conductive member and fourth conductive member of the developing box of the embodiment 5 of the utility model.

[0057] Figure 27A Is the perspective view of the developing box related to the embodiment 6 of the utility model.

[0058] Figure 27B Is the plan view of the powder discharging knife related to the embodiment 6 of the utility model, and the powder discharging knife is observed along the front and back directions.

[0059] Figure 28 Is the perspective view of the second end part in the developing box related to the embodiment 6 of the utility model.

[0060] Figure 29 Is the exploded view of the first end cover and the developing frame after being separated in the developing box related to the embodiment 7 of the utility model.

[0061] Figure 30 Is the exploded view of the surface cover and the bottom shell after being separated in the developing box related to the embodiment 8 of the utility model.

[0062] Figure 31 Is the side view of the developing box related to the embodiment 8 of the utility model, and the first end cover is hidden, and the side view is observed along the left and right directions.

[0063] Figure 32 Is the partial component exploded schematic diagram of the developing box related to the embodiment 8 of the utility model.

[0064] Figure 33 Is the perspective view of the developing box related to the embodiment 9 of the utility model.

[0065] Figure 34 Is the side view of the developing box related to the embodiment 9 of the utility model, and the side view is observed along the left and right directions.

[0066] Figure 35is the development box related to the embodiment 9 of the utility model, therefore the perspective view after the developing roller and the powder outlet knife.

[0067] Figure 36 is the development box related to the embodiment 9 of the utility model, the simplified schematic diagram when developing roller and photosensitive drum contact each other.

[0068] Figure 37 is the development box related to the embodiment 9 of the utility model, the simplified schematic diagram when developing roller and photosensitive drum contact each other. DETAILED DESCRIPTION

[0069] The utility model is further described below in combination with the drawings and embodiments.

[0070] Embodiment 1

[0071] As Figures 1-14 shown, the embodiment provides an imaging equipment P, the imaging equipment P includes main assembly P1, door cover P2, detection device 50 and separation force applying piece (not shown in the drawing), wherein main assembly P1 is provided with installation cavity P3 and main frame body P4, installation cavity P3 is used to install development box 10, installation cavity P3 has first inner side wall P31, a plurality of grounding conductive pieces P311 are exposed from the inner side wall towards the inside of installation cavity P3.

[0072] Main frame body P4 is surrounded in the four around installation cavity P3, and at least a part of main frame body P4 is made of conductive material.Main frame body P4 has the first upper end wall P41 that can be conductive and grounded and the second upper end wall P42 that is not conductive, and the second upper end wall P42 is closer to the inside of installation cavity P3 than the first upper end wall P41, the first upper end wall P41 is made of conductive metal material, and the second upper end wall P42 is made of non-conductive resin.The second upper end wall P42 includes the first face P43 and the second face P44, and a height difference is formed between the first face P43 and the second face P44, and compared with the first face P43, the second face P44 is farther away from the first upper end wall P41 than the first face P43.Door cover P2 can open or close the installation cavity P3, and it is rotatably installed on main frame body P4, and door cover P2 is provided with the second inner side wall P21 that can be conductive and grounded.

[0073] In some embodiments, a label P47 is attached to the first upper end wall P41, and such label P47 is used to record information such as installation operation of the development box.A first gap P471 is formed between the label P47 and the label P47, and a second gap P472 is formed between the label P47 and the second upper end P42.

[0074] The detection device 50 includes a detection unit 501, a power supply 502, a switching component 503, and a processor (not shown). The detection unit 501, the power supply 502, and the switching component 503 can be electrically connected to form a conductive circuit. The switching component 503 is used to control the on / off state of the circuit. The detection unit 501 can detect changes in electrical signals according to the on / off state of the circuit, thereby transmitting different electrical signals to the processor to determine the basic information of the developing cartridge.

[0075] In some embodiments, the switching component 503 may be omitted, and the detection unit 501 is electrically connected to the conductive component of the developing cartridge (the device to be detected, as described below), so that the voltage change of the device to be detected affects the electrical signal of the detection unit, enabling the processor to determine the basic information of the developing cartridge based on different electrical signals.

[0076] In other embodiments, the detection unit 501 may be a capacitive sensor, a pressure sensor, a photoelectric sensor, or an electromagnetic sensor, etc.

[0077] In this embodiment, the switch member 503 is made of a conductive material and is configured as a movable component, specifically capable of moving relative to the developing frame 11, having a closed position and an open position. In this embodiment, at least a portion of the switch member is disposed on the swing arm 504, and the switch member 503 is capable of moving between the closed and open positions as the swing arm 504 swings. Figure 1 As shown, in the open position (which can also be considered the initial position), the switch member 503 is in a state where the circuit is not conducting; in the closed position (such as... Figure 2 As shown, the switch component 503 closes the circuit, the circuit is turned on, and the detection unit 501 can detect the electrical signal. The separation force applicator (not shown) is provided in the main component P1 and can apply a force to the developing cartridge 10.

[0078] like Figures 4-6 As shown, the developing cartridge 10 is detachably installed in the drum housing 20, which houses the photosensitive drum 201. The drum housing 20 is detachably installed in the main component P1 of the imaging device P. For ease of description, the direction approximately parallel to the direction in which the drum housing 20 is installed in the electrophotographic imaging device P is defined as the front-back direction, with the side containing the photosensitive drum 201 designated as the front side and the side opposite the photosensitive drum 201 designated as the rear side; the direction parallel to the longitudinal direction of the drum housing 20 is defined as the left-right direction, with the side receiving the driving force from the electrophotographic imaging device P designated as the left side and the side opposite the left side designated as the right side; and the direction perpendicular to both the front-back and left-right directions is defined as the up-down direction.

[0079] like Figures 6-8As shown, the drum housing 20 includes a drum frame 202, a photosensitive drum 201, a second driving force receiving member 203, a charging member 204, a first electrode 205, a separation force transmitting member 206, a pressing member, and a locking member 207. The drum frame 202 is provided with a mounting portion for mounting the developing cartridge 10, and the photosensitive drum 201 is rotatably mounted on the drum frame 202. The second driving force receiving member 203 is located on one side of the drum housing 20 and is used to receive driving force from the imaging device P and can directly or indirectly drive the photosensitive drum 201 to rotate. The charging member 204 is used to charge the photosensitive drum 201, and the first electrode 205 can receive first power from the imaging device P and transmit it to the charging member 204. The separation force transmitting member 206 is disposed on the drum frame 202, and it can receive the force of the separation force applying member and move accordingly, and can transmit separation force to the developing cartridge 10; in this embodiment, the separation force transmitting member 206 is configured as a rotating member. The pressing element applies pressure to the developing cartridge 10 so that the developing roller 13 and the photosensitive drum 201 disposed on the developing cartridge 10 come into contact with each other. The locking element 207 is used to lock the developing cartridge 10.

[0080] like Figures 7-11 As shown, the developing cartridge 10 includes a developing frame 11, a first driving force receiving member 12, a developing roller 13 and a storage unit 14. Some developing cartridges 10 also include at least one of a powder feeding roller 15 and a stirring member 16.

[0081] Along the longitudinal direction of the developing cartridge 10, the developing cartridge 10 has a first end 101 and a second end 102 opposite to the first end 101. The developing frame 11 is provided with a powder container 110 for containing toner (developer). Figure 30 (As shown). The developing roller 13 is used to carry the toner contained in the developing frame 11. The developing roller 13 includes a developing layer 131 and a developing roller shaft 132. The developing layer 131 wraps around the radially outer side of the developing roller shaft 132. Both the developing roller shaft 132 and the developing layer 131 are conductive. Along the direction in which the developing cartridge 10 is installed to the imaging device P, the developing roller 13 is rotatably disposed on the front side of the developing frame 11, exposed from the front side of the developing frame 11 and facing the photosensitive drum 201 when installed to the imaging device P, so as to be able to perform developing operations. The storage unit 14 is used to store information such as the specifications and model of the developing cartridge 10. It includes a substrate 141, a memory, and electrical contacts. The substrate 141 has a front side and a back side disposed opposite to the front side. The electrical contacts and the memory are both disposed on the substrate 141, wherein the electrical contacts are disposed on the front side of the substrate 141 and the memory is disposed on the back side of the substrate 141. The device has multiple electrical contacts (two or more), and each electrical contact includes at least one grounding terminal 142, which can be electrically connected to the imaging device P to achieve grounding. In this embodiment, the storage unit 14 is disposed at the first end 101 of the developing cartridge 10.

[0082] The powder feeding roller 15 is rotatably supported on the developing frame 11 by a powder feeding roller shaft 152, faces the developing roller 13, and is capable of transferring the toner to the developing roller 13; the stirring member 16 is used to stir the toner contained in the toner cartridge. The first driving force receiving member 12 is used to receive the driving force from the image forming apparatus P to directly or indirectly drive the developing roller 13 and the powder feeding roller 15 to rotate; preferably, the first driving force receiving member 12 is arranged at the first end portion 101 of the developing cartridge 10. The first driving force receiving member 12 comprises a first force receiving portion 121, a first body portion 122, and a first gear portion 123, the first force receiving portion 121 is arranged on the first body portion 122, is capable of engaging with and receiving the driving force from the driving force output member of the image forming apparatus P, and the first gear portion 123 and a second gear portion 124 are connected with the first body portion 122 and are capable of transmitting the driving force, the first gear portion 123 and the second gear portion 124 can be integrally formed with the first body portion 122 or can be movably connected with the first body portion 122. Preferably, the diameter of the first body portion 122 is smaller than the diameter of the first gear portion 123, the diameter of the first gear portion 123 is smaller than the diameter of the second gear portion 124, and the first gear portion 123 is farther away from the developing frame 11 than the second gear portion 124. The storage unit 14 can be arranged at the first end portion 101, the second end portion 102, or a position between the first end portion 101 and the second end portion 102.

[0083] In the present embodiment, the developing cartridge 10 further comprises a first end cover 103, which is arranged at the first end portion 101 of the developing cartridge 10 and is connected with the developing frame 11 to cover at least part of the first driving force receiving member 12.

[0084] The developing cartridge 10 further comprises a developing roller driving gear 133 and a powder feeding roller driving gear 151, wherein the developing roller driving gear 133 is coaxially arranged with the developing roller 13 and is engaged with the second gear portion 124, and the powder feeding roller driving gear 151 is coaxially arranged with the powder feeding roller 15 and is engaged with the first gear portion 123; when the first force receiving portion 121 receives the driving force, the first gear portion 123 transmits the driving force to the powder feeding roller driving gear 151, and the second gear portion 124 transmits the driving force to the developing roller driving gear 133, and finally the developing roller 13 and the powder feeding roller 15 are both driven.

[0085] In some embodiments, the powder feeding roller driving gear 151 is shielded by the first end cover 103 and is not exposed outwardly, at this time, the powder feeding roller driving gear 151 is protected by being located between the developing frame 11 and the first end cover 103.

[0086] The first driving force receiving member 12 is rotatably installed, for example, the first driving force receiving member 12 can be directly arranged on the developing frame 11, can be arranged on a bracket detachably installed on the developing frame 11, or can be pre-installed to the first end cover 103, and then the first end cover 103 provided with the first driving force receiving member 12 is installed to the developing frame 11.

[0087] For the mode that the first driving force receiving member 12 is pre-installed to the first end cover 103, the first driving force receiving member 12 is taken off or installed together with the first end cover 103, and the steps of installation and dismounting of the first driving force receiving member 12 can be simplified.

[0088] The developing cartridge 10 of the embodiment further comprises a pressure receiving member 17, a separation force receiving member 18 and a locking member 19. The pressure receiving member 17 is capable of receiving the force of the pressing member, so that the developing roller 13 and the photosensitive drum 201 are close to or in contact with each other. The separation force receiving member 18 is used to receive the force from the separation force transmitting member 206 / separation force applying member, so that the developing roller 13 and the photosensitive drum 201 are separated from each other.

[0089] The pressure receiving member 17 is arranged on the developing frame 11, and is preferably integrally formed with the developing frame 11. When the developing cartridge 10 is installed to the drum cartridge 20, the pressing member abuts against the pressure receiving member 17 and applies a force to the pressure receiving member 17 from the back to the front. More preferably, the pressure receiving member 17 is located between the two end portions of the developing cartridge 10. The separation force receiving member 18 is arranged at one end of the developing cartridge 10. When the image forming apparatus P performs a cleaning operation, the separation force transmitting member 206 / separation force applying member applies a force to the separation force receiving member 18, so that the developing cartridge 10 moves backward, and the developing roller 13 and the photosensitive drum 201 are separated from each other. Preferably, the separation force receiving member 18 is arranged on the developing frame 11 and protrudes from the developing frame 11.

[0090] In some embodiments, the separation force receiving member 18 can also be arranged on the first main body portion 122 of the first driving force receiving member 12. The separation force receiving member 18 can be integrally formed with the first main body portion 122 or can be separately arranged, for example, the separation force receiving member is arranged at one end of the first main body portion 122 and can be exposed from the first end cover 103 to be capable of receiving the force. Preferably, the separation force receiving member 18 is integrally formed with the first force receiving portion 121. Preferably, the separation force receiving member 18 is rotatably installed on the first end cover 103. The locking member 19 is arranged on the rear side of the developing cartridge 10. When the developing cartridge 10 is installed to the drum cartridge 20, the locking member 19 is engaged with the locking member 207, so that the developing cartridge 10 is locked. Specifically, the locking member 19 is arranged on the first end cover 103. Preferably, the locking member 19 is arranged adjacent to the pressure receiving member 17.

[0091] In some embodiments, along the left-right direction / longitudinal direction, the surface of the separation force receiving member 18 for receiving the acting force or the entirety of the separation force receiving member 18 is located within the projection range of the developing roller 13 or the developing roller driving gear 133, or in other words, the separation force receiving member 18 does not extend beyond the projection range of the developing roller 13 or the developing roller driving gear 133.

[0092] As shown in FIG. 1, the developing cartridge 10 of the present embodiment further includes a detected device 70 that can be detected by the detection device 50 of the image forming apparatus P. Figures 7-11

[0093] The detected device 70 includes a conductive assembly 72 and a first voltage control member 71, the conductive assembly 72 can be electrically connected with the detection device 50 / switch member 503 of the image forming apparatus P and the ground terminal K of the image forming apparatus P in the state of being installed to the image forming apparatus P, and the first voltage control member 71 is used to control the on-off of the electrical connection between the detection device 50 or the switch member 503 and the ground terminal K, so that the voltage value detected by the detection unit 501 changes. Specifically, the conductive assembly 72 is provided with a first electrical connection part 73, which is used to electrically contact with the ground terminal K. The ground terminal K can be at least one of the ground terminal 142 of the storage unit 14, the image forming apparatus contact pin in contact with the ground terminal 142, the inner wall of the door cover P2, the first upper end wall P41, and the ground conductive member P311.

[0094] In the present embodiment, the first electrical connection part 73 is preferably in contact with the first upper end wall P41; in some embodiments, the first electrical connection part 73 is in contact with the first gap P471 or the second gap P472.

[0095] The conductive assembly 72 includes a first conductive member 74, a second conductive member 75, a third conductive member 76, and a fourth conductive member 77, which can be electrically connected in sequence, and can be separately arranged or integrally formed between the first conductive member 74, the second conductive member 75, the third conductive member 76, and the fourth conductive member 77.

[0096] ​In the present embodiment, the first conductive member 74 is arranged at least partially at the second end portion 102 of the developing cartridge 10, and is capable of receiving electric power from the image forming apparatus P, and in particular, is capable of receiving electric power in contact with the switch member 503 of the image forming apparatus P. The first conductive member 74 can be fixedly arranged with respect to the developing frame 11, or can be movably arranged with respect to the developing frame 11. When the first conductive member 74 is movably arranged with respect to the developing frame 11, the first electric connection portion 73 is in contact with the ground terminal in a state in which the developing cartridge 10 is installed to the image forming apparatus P, and the first conductive member 74 is configured to be movable between a position in which the first conductive member 74 is in electric contact with the switch member 503 and a position in which the first conductive member 74 is not in electric contact with the switch member 503.

[0097] The first conductive member 74 has various movement modes, for example, the first conductive member 74 is arranged to be movable in translation or rotation with respect to the developing frame 11. When the first conductive member 74 is arranged to be rotatable with respect to the developing frame 11, the axis of rotation of the first conductive member 74 can be parallel to the left-right direction, or can be parallel to the front-rear direction or the up-down direction, or can be inclined with respect to the left-right direction, the front-rear direction, and the up-down direction.

[0098] The second conductive member 75 is electrically connected to the first conductive member 74, and at least a portion of the second conductive member 75 extends between the first end portion 101 and the second end portion 102 of the developing cartridge 10. The second conductive member 75 can be at least one of the developing roller shaft 132, the developing roller 13, the powder feeding roller 15, and the powder outlet blade 25. In the present embodiment, the developing roller shaft 132 is used as the second conductive member 75. The third conductive member 76 is electrically connected to the second conductive member 75, and at least a portion of the third conductive member 76 is arranged at the second end portion 102 of the developing cartridge 10. The fourth conductive member 77 is selectively electrically connected to the third conductive member 76, and the fourth conductive member 77 is electrically connectable to the ground terminal K. Preferably, the fourth conductive member 77 is electrically connected to the first upper end wall P41, and at least a portion of the fourth conductive member 77 is arranged at the second end portion 102 of the developing cartridge 10.

[0099] The electrically conductive assembly 72 is switchable between an electrically connected state and a non-electrically connected state by the first voltage control member 71. In particular, the third conductive member 76 and the fourth conductive member 77 are switchable between an electrically connected state and a non-electrically connected state. At least a portion (a movable end) of the third conductive member 76 and / or the fourth conductive member 77 is movable, so that the third conductive member 76 and the fourth conductive member 77 are switchable between a contact state (one of the electrically connected states) and a non-contact state (one of the non-electrically connected states). Preferably, the fourth conductive member 77 includes a first electric connection portion 73 that is in contact with the ground terminal K, and the first electric connection portion 73 is elastically deformable. In a state in which the developing cartridge 10 is installed to the image forming apparatus P, the first electric connection portion 73 is in abutment with the ground terminal K.

[0100] In some embodiments, when the developing cartridge 10 is moved backward by the action force of the separation force transmission member 206 / separation force application member, the first electrical connection portion 73 keeps in contact with the ground terminal K, effectively improving the stability of the contact between the first electrical connection portion 73 and the ground terminal K.

[0101] In some embodiments, the first electrical connection portion 73 has a first deformation amount when the developing cartridge 10 is not subjected to the action force of the separation force transmission member 206 / separation force application member, and has a second deformation amount when the developing cartridge is moved backward by the action force of the separation force transmission member 206 / separation force application member, the first deformation amount being greater than the second deformation amount.

[0102] In some embodiments, the first voltage control member 71 is also capable of switching the conductive assembly 72 between the electrically connected state and the non-electrically connected state with the control detection device 50 or the switch member 503, thereby realizing the on-off of the electrical connection between the detection device 50 or the switch member 503 and the ground terminal K.

[0103] In some embodiments, the first voltage control member 71 is also capable of switching the conductive assembly 72 between the electrically connected state and the non-electrically connected state with the ground terminal K, thereby realizing the on-off of the electrical connection between the detection device 50 or the switch member 503 and the ground terminal K.

[0104] Preferably, the first voltage control member 71 is configured to be capable of moving between a first position and a second position, in the first position, the first voltage control member 71 drives the third conductive member 76 and / or the fourth conductive member 77, so that the third conductive member 76 and the fourth conductive member 77 are in the electrically connected state, at this time, the third conductive member 76 and the fourth conductive member 77 are also in the contact state; in the second position, the first voltage control member 71 does not drive the third conductive member 76 and / or the fourth conductive member 77, the third conductive member 76 and the fourth conductive member 77 are in the non-electrically connected state, at this time, the third conductive member 76 and the fourth conductive member 77 are also in the non-contact state.

[0105] The first voltage control member 71 is configured to be capable of moving in response to the movement of the first drive force receiving member 12, and is capable of directly or indirectly driving at least a part of the third conductive member 76 and / or the fourth conductive member 77, so that the third conductive member 76 and the fourth conductive member 77 can be switched between the contact state and the non-contact state.

[0106] The first voltage control member 71 is rotatably connected to the developing frame 11 directly or indirectly, in the embodiment, the first voltage control member 71 is rotatably mounted on the first end cover 103 of the developing cartridge 10. The first voltage control member 71 is configured as a rotating component, which comprises a second body part 710, a first driving force receiving part 711 and a first driving part 712, the first driving force receiving part 711 is arranged on the second body part 710 for being combined with the first driving force receiving member 12 and receiving driving force; the first driving part 712 is arranged on the second body part 710 and capable of driving the third conductive member 76 so that the third conductive member 76 is in electrical contact with the fourth conductive member 77.

[0107] In the embodiment, the first voltage control member 71 at least partially overlaps with the storage unit 14 in the longitudinal direction of the developing cartridge (i.e. left-right direction).

[0108] In the embodiment, the developing cartridge 10 further comprises a force applying part 105, which is capable of applying an acting force to the switch member 503 of the image forming apparatus P when the developing cartridge 10 is installed to the image forming apparatus P, so that the switch member 503 is moved from the initial position to the closed position. In the embodiment, the force applying part 105 is arranged on the first conductive member 74. Alternatively, the force applying part 105 can be arranged separately from the first conductive member 74.

[0109] In the embodiment, the developing cartridge 10 further comprises a speed reduction mechanism, which is arranged at the first end part 101 of the developing cartridge 10 and at least comprises the first transmission member 81 and the second transmission member 82, the first transmission member 81 comprises a third gear part 811 and a fourth gear part 812, the diameter of the third gear part 811 is smaller than that of the fourth gear part 812, and the third gear part 811 is closer to the developing frame 11 than the fourth gear part 812.

[0110] The second transmission member 82 comprises a fifth gear part 821 and a sixth gear part 822, the diameter of the fifth gear part 821 is larger than that of the sixth gear part 822, and the fifth gear part 821 is closer to the developing frame 11 than the sixth gear part 822.

[0111] The fourth gear part 812 is capable of being engaged with the first gear part 123 of the first driving force receiving member 12, the third gear part 811 is capable of being engaged with the fifth gear part 821 of the second transmission member 82, and the sixth gear part 822 of the second transmission member 82 is capable of being engaged with the first driving force receiving part 711 of the first voltage control member 71. Preferably, the diameter of the third gear part 811 is smaller than the diameters of the first gear part 123 and the second gear part 124. Preferably, the diameter of the sixth gear part 822 is smaller than the diameter of the third gear part 811. Preferably, the diameter of the first driving force receiving part 711 of the first voltage control member 71 is smaller than the diameter of the sixth gear part 822.

[0112] Since the diameter of the third gear portion 811 is smaller than the diameter of the fifth gear portion 821, when the third gear portion 811 transmits the driving force to the fifth gear portion 821, the rotational angular velocity of the second transmission member 82 is smaller than the rotational angular velocity of the first transmission member 81. Since the diameter of the sixth gear portion 822 is smaller than the diameter of the first driving force receiving portion 711, when the second transmission member 82 transmits the driving force to the first voltage control member 71, the rotational angular velocity of the first voltage control member 71 is smaller than the rotational angular velocity of the second transmission member 82. Thus, when the driving force is transmitted from the first driving force receiving member 12 to the first voltage control member 71, the rotational speed is reduced, the rotational speed of the first voltage control member 71 is smaller than the rotational speed of the first driving force receiving member 12, the rotational speed of the first voltage control member 71 is effectively controlled, so that the first voltage control member 71 effectively controls the on-off of the circuit, and the detection accuracy is improved.

[0113] In the present embodiment, the detected device 70 further comprises a power cut-off mechanism for cutting off the driving force transmitted to the first voltage control member 71. Specifically, the power cut-off mechanism can be a first tooth missing portion provided on the first voltage control member 71, when the first tooth missing portion rotates to face the sixth gear portion 822 of the second transmission member 82, the transmission of the driving force is cut off, the first voltage control member 71 no longer rotates, and the detection is completed. In some embodiments, the first voltage control member 71 is arranged to move along the direction of its rotation axis, when the detection is completed, the first voltage control member 71 is arranged to move along the direction of its rotation axis, so that the sixth gear portion 822 of the second transmission member 82 can disengage from the first driving force receiving portion 711 of the first voltage control member 71.

[0114] The developing cartridge 10 of the present embodiment is further provided with a powder filling port 84, the powder filling port 84 is arranged at the second end portion 102 of the developing cartridge 10, and the powder filling port 84 does not overlap with the second end cover 104 arranged at the second end portion 102 of the developing cartridge 10. The powder filling port 84 is arranged at the second end portion 102 of the developing cartridge 10, which facilitates the filling of toner. Since the first end portion 101 of the developing cartridge 10 is provided with more transmission members, if the powder filling port 84 is arranged at the first end portion 101, it will be not conducive to the filling of toner.

[0115] The developing cartridge 10 of the present embodiment, during the process of installing the developing cartridge 10 to the image forming apparatus P, the first conductive member 74 / force applying portion 105 abuts against the switch member 503 of the image forming apparatus P, so that the switch member 503 moves from the initial position to the closed position (as shown in Figure 13 At this time, the detection unit 501 detects that the voltage value is U1.

[0116] In combination Figures 12-14 The process of detecting the developing cartridge is described.

[0117] When the developing cartridge 10 starts to be detected, the first driving force receiving member 12 receives driving force to rotate, and the first voltage control member 71 receives driving force to rotate. With the rotation of the first voltage control member 71, the first driving part 712 drives the contact end 771 of the fourth conductive member 77 to be in electrical contact with the third conductive member 76, at which time the voltage value of the detection device 50 is U2. The values of U2 and U1 are different, the detection unit 501 detects the change of the voltage and records it.

[0118] In the embodiment, the voltage control part is provided with a plurality of first driving parts 712, the third conductive member 76 and the fourth conductive member 77 can be switched between the electrical connection state and the non-electrical connection state multiple times, and the detection unit 501 detects the multiple changes of the voltage value to identify the capacity and the specifications of the developing cartridge 10 and other information. When the detection is completed, the driving force of the first voltage control member 71 is cut off, it no longer receives driving force, the first driving part 712 no longer applies force to the fourth conductive member 77, and the third conductive member 76 and the fourth conductive member 77 are in the non-electrical connection state. The absolute value of U1 is greater than the absolute value of U2, and the value of U2 is preferably 0.

[0119] In some embodiments, an impedance element is further provided in the conductive assembly 72.

[0120] In some embodiments, the first conductive member 74 and the second conductive member 75 can be metal wires, metal conductive sheets, conductive rubber, conductive resin, etc.

[0121] In some embodiments, the driving force is transmitted to the first voltage control member 71 by setting a spring or a spring that accumulates elastic potential, without receiving driving force from the first driving force receiving member 12.

[0122] In some embodiments, the driving force is transmitted to the first voltage control member 71 by setting a second driving force receiving member 203 in the drum cartridge.

[0123] In some embodiments, the second conductive member 75 can be an independently provided conductive member.

[0124] The developing cartridge 10 with the above structure improves a new detection structure, and the detection accuracy is improved; the structure is further simplified.

[0125] The developing cartridge 10 with the above structure does not need to set a mechanism for opening and closing the dialing member / oscillating lever, reduces the damage to the oscillating lever; in addition, it also reduces the vibration of the developing cartridge due to dialing, reduces noise, and improves the user experience.

[0126] Embodiment 2

[0127] This embodiment is an improvement based on Embodiment 1, and the same parts will not be described again. The following only introduces the main differences. The same parts of the description can refer to the drawings of the previous embodiments.

[0128] As shown in Figure 15 , the conductive assembly of the developing cartridge 10 of this embodiment is configured to be electrically connected with the second inner side wall P21 of the door cover P2 of the image forming device P. Specifically, the first electrical connection part 73a extends from the rear end of the developing cartridge 10, and the second inner side wall P21 of the door cover P2 can be electrically connected with the first electrical connection part 73a when the door cover P2 is closed. In this embodiment, the first electrical connection part 73a extends from the first end cover 103 to the outside.

[0129] Preferably, the first electrical connection part 73a is configured to be elastically deformed to enhance the stability of the contact with the door cover P2.

[0130] In some embodiments, the first electrical connection part 73a is configured to be movable relative to the developing frame 11 to avoid interference with the door cover P2.

[0131] In some embodiments, the image forming device P can be provided with multiple developing cartridges, each of which has at least one first electrical connection part 73a, and the multiple first electrical connection parts 73a have different protruding amounts from the developing frame.

[0132] The developing cartridge 10 with the above structure has stronger stability when in contact with the door cover P2. In addition, compared with the first upper end wall P41, the first electrical connection part 73a is configured to avoid contact with the label P47 and the problem of poor contact.

[0133] The ground terminal K can be at least one of the ground terminal 142 of the storage unit 14, an image forming device contact needle in contact with the ground terminal 142, an inner wall of the door cover P2, the first upper end wall P41, and a ground conductive part P311.

[0134] Embodiment 3

[0135] This embodiment is a further improvement based on Embodiment 1 or 2, and the same parts will not be described again. The following only introduces the main differences. The same parts of the description can refer to the drawings of the previous embodiments.

[0136] As shown in Figure 16 and Figure 17As shown, the first electric connecting part 73b is configured to be movable between a third position and a fourth position under the action of an external force, in the third position, the first electric connecting part 73b protrudes relative to the developing frame 11 and can be electrically connected with the grounding terminal K; in the fourth position, the first electric connecting part 73b is retracted relative to the third position, preferably retracted relative to the developing frame 11. The movement of the first electric connecting part 73b can be sliding, swinging or rotating.

[0137] In the present embodiment, the first electric connecting part 73b further comprises a second force receiving part 731, which is movable under the action of the force of the image forming device P, specifically under the action of the force of the second surface P44.

[0138] Preferably, the first electric connecting part 73b is movable in the front-rear direction of the developing cartridge 10. As shown in Figure 16 As shown, when the developing cartridge 10 is not installed to the image forming device P, the first electric connecting part 73b is in the third position, the first electric connecting part 73b does not protrude the rear end of the developing cartridge 10; as shown in Figure 17 As shown, when the developing cartridge 10 is installed to the image forming device P, the first electric connecting part 73b abuts against the second surface P44 of the second upper end wall P42 of the image forming device P, a part of the first electric connecting part 73b protrudes the rear end of the developing cartridge 10, and when the door cover P2 is closed, the first electric connecting part 73b can be electrically connected with the second inner side wall P21 of the door cover P2 to realize grounding.

[0139] The developing cartridge 10 with such structure can retract the first electric connecting part 73b into the developing frame 11 when the developing cartridge 10 is packaged, avoiding damage during packaging / transportation.

[0140] In some embodiments, the second force receiving part 731 can be directly or indirectly driven by the first driving force receiving member 12, so that the first electric connecting part 73b moves between the third position and the fourth position.

[0141] The grounding terminal K can be at least one of the grounding terminal 142 of the storage unit 14, an image forming device stylus in contact with the grounding terminal 142, an inner wall of the door cover P2, the first upper end wall P41, and a grounding conductive part P311.

[0142] Embodiment 4

[0143] The present embodiment is a further improvement based on Embodiment 1, Embodiment 2 or Embodiment 3, and the same parts will not be described again. Only the main differences will be introduced below. The same parts of the description can refer to the drawings of the previous embodiments.

[0144] As shown in Figures 18 to 22As shown, in the present embodiment, the first voltage control member 71 controls the electrically conductive assembly 72c to selectively contact the ground terminal K, i.e. the first electric connection part 73c of the electrically conductive assembly 72c can be switched between an electrically contacting state and a non-electrically contacting state with the ground terminal K.

[0145] The electrically conductive assembly 72c of the present embodiment comprises a first electrically conductive member 74c, a second electrically conductive member 75c, a third electrically conductive member 76c and a fourth electrically conductive member 77c, wherein the first electrically conductive member 74c is electrically connected with the second electrically conductive member 75c, and the first electrically conductive member 74c can be electrically connected with the switch member 503 when the developing cartridge 10 is installed into the image forming device P. The second electrically conductive member 75c extends from the first end portion 101 of the developing cartridge 10 to the second end portion 102 of the developing cartridge 10, and the second electrically conductive member 75c is electrically connected with the third electrically conductive member 76c, and the third electrically conductive member 76c is electrically connected with the fourth electrically conductive member 77c, and the fourth electrically conductive member 77c can be electrically connected with the ground terminal K. Preferably, the third electrically conductive member 76c and the fourth electrically conductive member 77c are integrally formed or fixedly connected.

[0146] The first electric connection part 73c of the fourth electrically conductive member 77c is configured to be movable between a third position and a fourth position. In the third position, the first electric connection part 73c protrudes relative to the developing frame 11 or the first end cover 103, and the first electric connection part 73c can be electrically connected with the ground terminal K. In the fourth position, the first electric connection part 73c is retracted relative to the third position, preferably retracted relative to the developing frame 11. The movement of the first electric connection part 73c can be sliding, swinging or rotating. In the present embodiment, the first electric connection part 73c is slidably arranged on the first end portion 101 / the first end cover 103, and the first end cover 103 is provided with a receiving cavity 731c for receiving at least a portion of the first electric connection part 73c. The first electric connection part 73c is provided with a third force receiving part 732c, and during the rotation of the first voltage control member 71, the first driving part 712 can apply a force to the third force receiving part 732c of the first electric connection part 73c, so that the first electric connection part 73c moves from the fourth position to the third position, and the electric connection between the first electric connection part 73c and the ground terminal K is achieved. Preferably, the first electric connection part 73c is configured to move in the front-rear direction of the developing cartridge 10.

[0147] The detection device also includes a first reset member 733c, which forces the first electrical connection portion 73c to move from a third position to a fourth position. For example, when the first driving unit 712 no longer applies force to the force-bearing portion of the first electrical connection portion 73c, the first electrical connection portion 73c can move from the third position to the fourth position under the force of the first reset member 733c. Preferably, the third conductive member 76c acts as the first reset member 733c. The third conductive member 76c is configured as a torsion spring structure, which accumulates elastic potential energy when the first electrical connection portion 73c can move from the fourth position to the third position, and releases the elastic potential energy when the first driving unit 712 no longer applies force to the force-bearing portion of the first electrical connection portion 73c, so that the first electrical connection portion 73c can move from the third position to the fourth position.

[0148] Combination Figures 20-22 When the developing cartridge 10 is not installed into the imaging device P, such as Figure 21 As shown, the switch member 503 is in the open position of the non-conducting circuit. When the developing cartridge 10 is installed into the imaging device P, the swing arm 504 is subjected to the force applied by the force part 105, causing the switch member 503 to move from the open position to the closed position. At this time, the detected device is not connected to the ground terminal K, and the voltage value detected by the detection unit 501 is U1.

[0149] When the developing cartridge 10 begins detection, combined with Figure 22 The first driving unit 712 drives the first electrical connection 73c to move from the fourth position to the third position, and the first electrical connection 73c contacts the ground terminal K. At this time, the voltage value detected by the detection unit 501 is U2. When the first driving unit 712 stops driving the first electrical connection 73c, the first electrical connection 73c moves from the third position to the fourth position under the action of the first reset member 733c, and the first electrical connection 73c disconnects from the ground terminal K. At this time, the voltage value detected by the detection unit 501 is U1. Since the values ​​of U1 and U2 are different, the detection unit 501 detects the change in voltage signal to determine the information of the developing cartridge 10.

[0150] With the development cartridge 10 having the above structure, the electrical connection of the device under test 70 is more stable.

[0151] The grounding terminal K can be at least one of the following: the grounding terminal 142 of the storage unit 14, the imaging device stylus in contact with the grounding terminal 142, the inner wall of the door cover P2, the first upper wall P41, and the grounding conductive element P311.

[0152] Example 5

[0153] This embodiment is a further improvement on embodiment 4. The identical parts will not be repeated; only the main differences will be described below. The accompanying drawings of the foregoing embodiment can be used as references for the identical parts in the specification.

[0154] As Figures 1 to 5b , Figures 23 to 26 shown in the present embodiment, the conductive assembly is capable of electrically connecting the switch member, and the conductive assembly and the grounding end K are capable of switching between the electrically connected state and the non-electrically connected state. Specifically, the first voltage control member 71f controls the conductive assembly to selectively contact the grounding end K, that is, the first electrically connected part 73f of the conductive assembly and the grounding end K are capable of switching between the electrically connected state and the non-electrically connected state.

[0155] The conductive assembly of the present embodiment includes a first conductive member 74f, a second conductive member 75f, a third conductive member 76f, and a fourth conductive member 77f, wherein the first conductive member 74f is electrically connected with the second conductive member 75f, and the first conductive member 74f is capable of being electrically connected with the switch member 503 when the developing cartridge 10 is installed into the image forming device P. In the present embodiment, the first conductive member 74f is made of a conductive metal piece.

[0156] The second conductive member 75f extends from the first end part 101 of the developing cartridge 10 to the second end part 102 of the developing cartridge 10, and the second conductive member 75f is electrically connected with the third conductive member 76f. The second conductive member 75f includes at least one of the developing roller shaft 132, the developing roller 13, the powder feeding roller 15, and the powder outlet blade 25, or at least contains a conductive part independent of the developing roller 13, the powder feeding roller 15, and the powder outlet blade 25. The present embodiment adopts the powder outlet blade 25 as the second conductive member 75f.

[0157] The third conductive member 76f is located at the first end part 101 of the developing cartridge 10, and the third conductive member 76f is electrically connected with the fourth conductive member 77f, and the fourth conductive member 77f is capable of being electrically connected with the grounding end K. Preferably, the third conductive member 76f and the fourth conductive member 77f are integrally formed or fixedly connected.

[0158] The first electrically connected part 73f of the fourth conductive member 77f is configured to be movable between a third position and a fourth position. In the third position, the first electrically connected part 73f protrudes relative to the developing frame 11 or the first end cover 103f, and in this third position, it is capable of being electrically contacted with the grounding end K. In the fourth position, the first electrically connected part 73f is retracted relative to the third position, and preferably, it is retracted relative to the developing frame 11 or the first end cover 103f. The first electrically connected part 73f is configured to be elastically deformable, so as to be capable of achieving elastic electrical contact with the grounding end K (the door cover), thereby improving the stability of the contact.

[0159] In the present embodiment, the third conductive member 76f can act as a first reset member 733f for forcing the first electrical connection part 73f to be able to move from the third position to the fourth position, that is, the third conductive member 76f can be considered as the first reset member 733f. The third conductive member 76f comprises a first connecting end 761, a second connecting end 762 and an elastic part 763, the first connecting end 761 is electrically connected with the second conductive member 75f, the second connecting end 762 is electrically connected with the fourth conductive member 77f. The elastic part 763 connects the first connecting end 761 and the second connecting end 762, the elastic part 763 can be stretched when the first electrical connection part 73f moves from the fourth position to the third position, and can make the first electrical connection part 73f in the third position return to the fourth position when the elasticity recovers. Specifically, when the first electrical connection part 73f moves from the fourth position to the third position under the driving of the first voltage control member 71f, the elastic part 763 is stretched. When the first electrical connection part 73f is not driven (which can be direct driving or indirect driving) by the first voltage control member 71f, the elastic part 763 elastically recovers, so that the first electrical connection part 73f returns from the third position to the fourth position.

[0160] In some embodiments, the force for forcing the first electrical connection part 733f to return from the third position to the fourth position can also be an additionally installed elastic member, which elastically deforms and accumulates reset force when the first electrical connection part 73f moves from the fourth position to the third position, and releases elastic force when the first electrical connection part 73f is not driven by the first voltage control member 71f, so that the first electrical connection part 73f returns from the third position to the fourth position.

[0161] In some embodiments, when the driving force source of the first voltage control member 71 is cut off by the passive force cutting mechanism, the elastic part 763 can also prevent the first voltage control member 71 from rotating reversely, and avoid the first voltage control member 71 from continuing to rotate after receiving driving force again. That is, when the driving force source of the first voltage control member 71 is cut off by the passive force cutting mechanism, the reverse rotation of the first voltage control member 71 will be blocked by the elastic part 763.

[0162] In the front-rear direction of the developing cartridge 10, the first electrical connection part 73f at least partially overlaps with the first voltage control member 71f; in the left-right direction of the developing cartridge 10, the first electrical connection part 73f is located between the second gear part 124 and the electrical contact of the storage unit 14; preferably, the first electrical connection part 73f is located between the second gear part 124 and the first force receiving part 121.

[0163] The first end cover 103f of the present embodiment covers at least part of the fourth conductive member 77f, and includes an opening portion 1031 and a receiving cavity 1032. The opening portion 1031 is arranged at the rear side of the first end cover 103f and faces the rear of the developing cartridge 10, and the first electrical connection portion 73f can be exposed outwardly from the opening portion 1031. When the first electrical connection portion 73f is in the third position, at least part of the first electrical connection portion 73f is located outside the opening portion 1031, and when the first electrical connection portion 73f is in the fourth position, the first electrical connection portion 73f is located inside the opening portion 1031. The receiving cavity 1032 is located between the storage unit 14 and the developing frame 11, and is used to accommodate the fourth conductive member 77f.

[0164] The design of such a structure is beneficial to the protection of the fourth conductive member 77f by the first end cover 103f. In addition, when the developing cartridge 10 is packaged, the first electrical connection portion 73f of the first conductive member 74f is in the third position, which can avoid the first electrical connection portion 73f from being pierced by the packaging member, and reduce the packaging difficulty and cost.

[0165] The developing cartridge 10 further includes a movable member 9f that carries the fourth conductive member 77f or at least part of the first electrical connection portion 73f, and the movable member 9f can move relative to the developing frame 11 of the developing cartridge 10. In the present embodiment, the movable member 9f is configured to slide along the front-rear direction relative to the developing frame 11, and preferably, the movable member 9f is slidably arranged on the first end cover 103f. In some embodiments, the movable member 9f can also be arranged on the developing frame 11, and the moving direction of the movable member 9f can also be the left-right direction or the up-down direction, as long as the movable member 9f can switch between the contact state and the non-contact state with the grounding end K.

[0166] The movable member 9f includes a connecting portion 91f, a first receiving portion 92f, a force receiving portion 93f, and a force applying portion 94f. The connecting portion 91f is used to be slidably connected with the connected portion 1033 of the first end cover 103f, and specifically, at least one of the connecting portion 91f and the connected portion 1033 is a sliding block, and the other is a sliding groove matched with the sliding block.

[0167] The first accommodating portion 92f can accommodate at least part of the fourth conductive member 77f, and the first electrical connection portion 73f can extend out of the opening of the first accommodating portion 92f. The force receiving portion 93f is configured to receive the force of the first voltage control member 71f, so that the movable piece 9f can slide. The force receiving portion 93f extends towards the direction of the developing roller 13, and the extending end is provided with a force receiving surface 931f, which is an inclined surface and faces the lower side and the front side. The force applying portion 94f is configured to apply a force to the fourth conductive member 77f, so that the first electrical connection portion 73f moves from the third position to the fourth position; in particular, the fourth conductive member is in abutment with the force applying portion 94f.

[0168] In the present embodiment, the first driving portion 712 of the first voltage control member 71f is provided with an arc-shaped driving surface 7121, which cooperates with the force receiving surface 931f to make the movable piece 9f slide. The arc-shaped driving surface 7121 cooperates with the force receiving surface 931f to make the driving more smooth.

[0169] In the present embodiment, the developing cartridge 10 further comprises a reset mechanism, which facilitates the user to restore the detected device to the initial state when it is not detected. In the present embodiment, the reset mechanism comprises a first indication position 871f provided on the first voltage control member 71f and a second indication position 872f provided on the first end cover 103f, when the first indication position 871f and the second indication position 872f are aligned, the first voltage control member 71f is in the initial position, and the detected device is in the initial state when it is not detected. In particular, the first indication position 871f is a first surface provided on the first driving portion 712, and the second indication position 872f is a second surface provided on the upper side of the end cover, when the first surface and the second surface are flush, the first voltage control member 71f is in the initial position, and the detected device is in the initial state when it is not detected.

[0170] In combination Figure 20 When the developing cartridge 10 is not installed to the image forming apparatus P, the switch member 503 is in the open position to disconnect the circuit. Referring to Figure 21 When the developing cartridge 10 is installed to the image forming apparatus P, the swing lever 504 is acted on by the force applying portion 94 to move the switch member 503 from the open position to the closed position, at this time, the detected device is not in conduction with the ground terminal K, and the voltage value detected by the detection unit is U1.

[0171] In combination Figure 22When the developing cartridge 10 is detected to start, the first driving part 712 pushes the movable part 9f to slide backward, the force applying part 94f of the movable part 9f applies force to the fourth conductive part 77f, so that the first electric connecting part 73f moves from the fourth position to the third position backward, the first electric connecting part 73f contacts the ground terminal K, at this time the elastic part 763 is stretched, the voltage value detected by the detecting unit is U2.

[0172] When the first driving part 712 no longer pushes the movable part 9f, the fourth conductive part 77f moves the first electric connecting part 73f from the third position to the fourth position under the elastic restoring force of the elastic part 763, at the same time the movable part 9f moves forward under the force of the fourth conductive part 77f, the first electric connecting part 73f is disconnected from the ground terminal K, at this time the voltage value detected by the detecting unit is U1. The values of U1 and U2 are different, the detecting unit detects the change of the voltage signal. When the first driving part 712 drives the movable part 9f again, the first electric connecting part 73f and the ground terminal K switch between the contact and non-contact states again, the detecting unit detects the change of the voltage value, so as to judge the information of the developing cartridge 10. When the user needs to reset the detected device, only needs to rotate the first voltage control part 71f to align the first surface and the second surface.

[0173] The ground terminal K can be at least one of a ground terminal K sub of the storage unit, an imaging device stylus in contact with the ground terminal K sub, an inner wall of the door cover P2, a device side wall, a first upper end wall P41, and a ground conductive part P311.

[0174] In some embodiments, at least two of the first conductive part 74f, the second conductive part 75f, the third conductive part 76f and the fourth conductive part 77f are integrally formed. When the first conductive part 74f, the second conductive part 75f, the third conductive part 76f and the fourth conductive part 77f are integrally formed, the conductive assembly can be a conductive wire, a conductive metal wire or a conductive resin, etc.

[0175] In some embodiments, at least one of the first conductive part 74f, the second conductive part 75f, the third conductive part 76f and the fourth conductive part 77f has a plurality of separately arranged conductive parts.

[0176] In some embodiments, the conductive assembly supplies power received to at least one of the developing roller, the powder outlet blade and the powder feeding roller; that is, the conductive assembly is electrically connected to at least one of the developing roller, the powder outlet blade and the powder feeding roller.

[0177] In some embodiments, the electrically conductive assembly is not electrically connected to at least one of the developer roller, the powder outlet blade, and the powder feeding roller; the developer roller is electrically connected to the switching member 503 or a power supply member of the image forming device through an electrically connecting member independent of the electrically conductive assembly. The electrically connecting member is capable of being in electrical contact with the switching member 503 and not in contact with the electrically conductive assembly.

[0178] Embodiment 6

[0179] Based on the inventive concept of the above embodiments, this embodiment continues to describe the structure of the developing cartridge.

[0180] As described above, the first connecting end 761 is configured to be electrically connected to the second electrically conductive member 75, in this embodiment, the first connecting end 761 is configured not to extend along a straight line, as shown in FIG. 27, the first connecting end 761 includes a first contact portion 7611, a second contact portion 7612, and an intermediate portion 7613, wherein the first contact portion 7611 is configured to be in electrical contact with the second electrically conductive member 75, the second contact portion 7612 is configured to be in electrical contact with the elastic portion 763, and the intermediate portion 7613 is configured to connect the first contact portion 7611 and the second contact portion 7612.

[0181] In this embodiment, at least the intermediate portion 7613 does not extend along a straight line, specifically, the intermediate portion 7613 includes a first extension portion 76131, a second extension portion 76132, and a third extension portion 76133 connected in sequence, the first extension portion 76131 is connected to the second contact portion 7612, the third extension portion 76133 is connected to the first contact portion 7611, a first corner 7613a is formed between the first extension portion 76131 and the second contact portion 7612, a second corner 7613b is formed between the first extension portion 76131 and the second extension portion 76132, a third corner 7613c is formed between the second extension portion 76132 and the third extension portion 76133, and a fourth corner 7613d is formed between the third extension portion 76133 and the first contact portion 7611. By providing the plurality of corners, the intermediate portion 7613 can better fit the external contour of the developing cartridge 10, so that the intermediate portion 7613 can not protrude from the external contour of the developing cartridge 10, which is not only conducive to protecting the intermediate portion 7613 from external forces, pollution, etc., but also makes the developing cartridge 10 with the intermediate portion 7613 easier to package, and the intermediate portion 7613 will not pierce the packaging member used to package the developing cartridge 10.

[0182] Further, the extension direction of the first extension part 76131, the extension direction of the second extension part 76132 and the extension direction of the third extension part 76133 are different from each other, preferably, the extension direction of the first extension part 76131, the extension direction of the second extension part 76132 and the extension direction of the third extension part 76133 are all different from each other, as shown in FIG. 27, the first extension part 76131 extends along the left-right direction, the second extension part 76132 extends along the front-rear direction, and the third extension part 76133 extends along the up-down direction, the extension directions of the extension parts are different from each other, so that each extension part can be embedded in the gap of the developing cartridge 10, which means that the intermediate part 7613 can be more stably installed by being limited by the corresponding part of the developing cartridge 10.

[0183] Further, the powder discharging blade 25 comprises a blade holder 251 and a blade 252, the blade holder 251 is fixedly installed on the developing frame 11, and the blade 252 is fixedly installed on the blade holder 251 and is used to contact the outer surface of the developing roller 13 / developing layer 131, generally, at least the blade holder 251 is made of metal, so that when the powder discharging blade 25 is used as the second conductive member 75, at least the blade holder 251 can be used to transmit power / electric signals between the first end part 101 and the second end part 102, and when the blade 252 is also made of metal, either the blade holder 251 or the blade 252 can be used to transmit power / electric signals between the first end part 101 and the second end part 102.

[0184] In some embodiments, the blade holder 251 comprises a first part 2511 and a second part 2512 connected to each other, the blade 252 is fixedly installed on the second part 2512, and the first part 2511 and the second part 2512 both extend along the left-right direction, but the thickness direction of the first part 2511 and the thickness direction of the second part 2512 are not parallel to each other, so that a bending part 253 is formed between the first part 2511 and the second part 2512, which makes the powder discharging blade 25 capable of abutting against the developing frame 11 through the first part 2511 and the second part 2512 respectively, and finally, the powder discharging blade 25 is stably installed on the developing frame 11.

[0185] In some embodiments, when viewed along the left-right direction, the bending part 253 is located outside the projection range of the first driving force receiving member 12 (as shown in FIG. 25), which is beneficial to reduce the influence of the bending part 253 on the rotation of the first driving force receiving member 12. Figure 34

[0186] ​In some embodiments, the powder discharge blade 25 further comprises a first mounting portion 254 and a second mounting portion 255 provided on the blade holder 251, and the powder discharge blade 25 is mounted to the developing frame 11 through the first mounting portion 254 and the second mounting portion 255, which can be mounted by clamping, bonding, screwing, etc. In the developing cartridge shown in FIG. 27, the first mounting portion 254 and the second mounting portion 255 are both provided as screw holes.

[0187] Preferably, along the left-right direction, the two mounting portions 255 are respectively located at the two ends of the powder discharge blade 25, along the up-down direction (the direction intersecting the left-right direction and the thickness direction of the blade), the blade holder 251 has a first end portion 251a and a second end portion 251b spaced from each other, and the blade 252 has a third end portion 252a and a fourth end portion 252b spaced from each other, wherein the second end portion 251b is located between the third end portion 252a and the fourth end portion 252b, the third end portion 252a is located between the first end portion 251a and the second end portion 251b, along the up-down direction, the first end portion 251a is farther away from the rotation axis of the developing roller 13 than the second end portion 251b, the third end portion 252a is farther away from the rotation axis of the developing roller 13 than the fourth end portion 252b, and the third end portion 252a is farther away from the rotation axis of the developing roller 13 than the second end portion 251b.

[0188] The second end portion 251b and the third end portion 252a form a joint area S, the joint area S is located on at least one of the blade holder 251 and the blade 252, and the blade 252 and the blade holder 251 are combined in the joint area S; along the up-down direction, the mounting portion 253 is located in the joint area S.

[0189] In some embodiments, the mounting portion 253 penetrates the blade 252 and the blade holder 251 at the same time, so that the blade 252 can be further fixed.

[0190] In some embodiments, the third end portion 252a is farther away from the rotation axis of the developing roller 13 than the mounting portion 253, or in other words, the third end portion 252a is farther away from the second end portion 251b than the mounting portion 253, so that the area of the joint area S is as large as possible, and the blade 252 can be more stably supported by the blade holder 251.

[0191] In this embodiment, at least a part of the first conductive member 74 is supported by the support 111 of the developing frame 11 or the second end cover 104, and the first conductive member 74 is electrically connected to the powder discharge blade 25, specifically, the first conductive member 74 is in contact with the blade holder 251.

[0192] As Figure 28As shown, the first conductive member 74 can contact the longitudinal end face 2513 of the powder dispensing blade 25, or it can contact other positions of the powder dispensing blade 25. For example, the first conductive member 74 is disposed between the blade holder 251 and the developing frame 11. In this case, the first conductive member 74 will be fixed to the developing frame 11 together with the blade holder 251. That is to say, the first conductive member 74 does not need to be provided with a structure for fixing to the developing frame 11. More specifically, the first conductive member 74 is disposed between the developing frame 11 and the second part 2512 of the blade holder.

[0193] In some embodiments, when the powder ejector blade 25 is fixed by screws, the first conductive member 74 can also be provided with screw holes, so that the powder ejector blade 25 and the first conductive member 74 can be fixed to the developing frame 11 simultaneously with a single screw.

[0194] When the developing roller 13 serves as the second conductive component 75, the first conductive component 74 can contact both the longitudinal end face 1311 of the developing layer of the developing roller 13 and the longitudinal end face 1321 of the developing roller shaft of the developing roller 13.

[0195] When the powder feeding roller 15 serves as the second conductive member 75, preferably, the third conductive member 76 contacts the longitudinal end face 1521 of the powder feeding roller shaft of the powder feeding roller 15.

[0196] At the second end 102, the first connection end 761 can be electrically connected to at least one of the powder discharge knife 25 and the powder feeding roller 15. For example, the first connection end 761 is in electrical contact with the end face 1521 of the powder discharge knife 25 and the powder feeding roller shaft 152 of the powder feeding roller 15.

[0197] Example 7

[0198] The same components as those in the above embodiments will be numbered the same. Compared with the above embodiments, the first end cap 103 in this embodiment is also provided with a clearance part 1034. Specifically, the clearance part 1034 can be formed as a groove or as a through hole.

[0199] like Figure 29 As shown, along the left-right direction, the clearance portion 1034 penetrates the first end cover 103, and at least a portion of the first voltage control member 71 can be exposed to the outside through the clearance portion 1034. In this way, the user can observe the state of the first voltage control member 71 without removing the first end cover 103.

[0200] In the left-right direction, the first driving force receiving member 12 / the first force receiving portion 121 has a first end surface 1211, the first driving portion 712 has a second end surface 7122, the first end surface 1211 and the second end surface 7122 both face the same direction, for example, both face the left, and further, in the left-right direction, the first end surface 1211 and the second end surface 7122 are not flush, and the distance between the first end surface 1211 and the second end surface 7122 is not less than 13 mm, and is preferably 13 mm-17 mm.

[0201] Embodiment 8

[0202] As shown in Figure 30 The developing frame 11 includes a bottom shell 11a and a face cover 11b arranged separately, the powder tank 110 is located between the bottom shell 11a and the face cover 11b, and at least one of the developing roller 13, the powder feeding roller 15 and the stirring member 16 is rotatably arranged in the bottom shell 11a.

[0203] Generally, the bottom shell 11a and the face cover 11b are combined with each other by welding, and different from the existing design, in the developing cartridge provided in the embodiment, a welding surface 11c formed between the bottom shell 11a and the face cover 11b at least includes a first surface 11c1 and a second surface 11c2, the first surface 11c1 and the second surface 11c2 are neither in the same plane nor parallel to each other, such a welding surface 11c can make the bottom shell 11a and the face cover 11b more stably combined, even if the bottom shell 11a and the face cover 11b are separated from each other, the bottom shell 11a and the face cover 11b are not easy to separate from each other through the support of the first surface 11c1 and the second surface 11c2 to the face cover 11b.

[0204] The first surface 11c1 and the second surface 11c2 can be connected to each other or spaced apart from each other, as long as they are neither in the same plane nor parallel to each other.

[0205] Accordingly, the welding surface 11c can further have more surfaces, and preferably, when the number of surfaces in the welding surface 11c is greater than two, at least two surfaces are neither in the same plane nor parallel to each other.

[0206] As shown in Figure 31 When viewed along the first direction, the welding surface 11c is located outside the range of the first driving force receiving member 12, which can reduce the influence of the vibration of the first driving force receiving member 12 in rotation on the welding surface 11c.

[0207] Since the bottom shell 11a and the face cover 11b are in contact with each other through the welding surface 11c, although Figure 30 the welding surface 11c shown in

[0208] In some embodiments, the developing cartridge 10 is further provided with a detected member for interacting with a detection member in the image forming device P, for example, by the number of times, time interval, etc. that the detected member collides with the detection member, the image forming device P can learn the model, service life, etc. of the developing cartridge 10.

[0209] To reduce the structural complexity of the first end portion 101, there are developing cartridges in which the detected member is arranged at the second end portion 102, in which the detected member needs to receive the driving force from the first force receiving portion 121 to work, and in the prior art, the driving force is usually transmitted from the first end portion 101 to the second end portion 102 by the stirring member 16 or another transmission rod (collectively referred to as "rod-shaped member"). However, this way has the problem that the rod-shaped member needs to bear the torsion generated by the driving force, which easily causes the rod-shaped member to break, and the problem of delay in driving force transmission.

[0210] As shown in Figure 32 The developing cartridge in the present embodiment transmits the driving force in a multi-gear meshing manner, specifically, the developing cartridge 10 further comprises a driving force transmission assembly 6 arranged between the first end portion 101 and the second end portion 102, for transmitting the driving force received by the first force receiving portion 121 from the first end portion 101 to the second end portion 102, to drive the detected member to move relative to the developing frame 11.

[0211] The driving force transmission assembly 6 comprises a driving member 61 and a transmission member 62 that mesh with each other, wherein the driving member 61 is used to receive the driving force from the first force receiving portion 121, and the transmission member 62 is used to transmit the driving force from the first end portion 101 to the second end portion 102.

[0212] In some embodiments, the driving member 61 is arranged as a double gear, comprising a first-stage gear 611 and a second-stage gear 612 arranged coaxially, the first-stage gear 611 is used to receive the driving force from the first force receiving portion 121, and the second-stage gear is used to transmit the driving force to the transmission member 62, preferably, the second-stage gear 612 is arranged as a bevel gear, which can realize the change of the transmission direction of the driving force.

[0213] The transmission member 62 comprises a transmission head 621, a movement part 622 and a transmission tail 623, all of which are arranged as gears and mesh with each other, wherein the transmission head 621 is meshed with the second-stage gear 612 and the movement part 622 at the same time, and the transmission tail 623 is directly or indirectly combined with the detected member arranged at the second end portion 102. The arrangement of the transmission head 621 and the transmission tail 623 can make the overall design of the transmission member 62 have greater freedom. Specifically, the transmission head 621 can be designed according to the position and structure of the driving member 61, the transmission tail 623 can be designed according to the position and structure of the detected member and the detection requirement of the mutual detection between the detected member and the detection member, and the movement part 622 only needs to ensure that the driving force can be transmitted from the first end portion 101 to the second end portion 102.

[0214] As shown in Figure 32 , the movement part 622 is arranged as a plurality of gears meshing with each other, and the number thereof is set to be between 8 and 13, and preferably 12 gears meshing with each other.

[0215] In some embodiments, at least one of the transmission head 621 and the transmission tail 623 can also be arranged as the same gear as the gears in the transmission part 622.

[0216] In some embodiments, the developing frame 11 is further provided with a mounting groove 116, and at least the movement part 622 is arranged in the mounting groove 116, so that the plurality of gears in the movement part 622 can be limited by the mounting groove 116 and cannot easily shake, that is, the movement trajectory of the movement part 622 can be limited by the mounting groove 116.

[0217] In some embodiments, the developing cartridge 10 further comprises a cover plate 115 for covering the mounting groove 116, and finally at least one gear in the movement part 622 can be covered by the cover plate 115, so that the risk of gear falling off is reduced; as shown in Figure 32 , each gear in the movement part 622 corresponds to a mounting column 117 to ensure that the gear can be stably mounted and stably transmit the driving force.

[0218] Preferably, in the front-rear direction, the plurality of gears (the movement part 622) are located behind the powder outlet knife 25 / the first force receiving portion 121, and specifically, the first force receiving portion 121 is located between the powder outlet knife 25 and the plurality of gears (the movement part 622). On the one hand, it can reduce the influence of the plurality of gears on the powder outlet knife 25 during transmission, and on the other hand, it can reduce the influence of the vibration generated by the rotation of the first force receiving portion 121 on the plurality of gears.

[0219] In some embodiments, as shown in Figure 32As shown, the plurality of gears are arranged in a straight line. For example, when viewed in the vertical direction, the line connecting the rotation centers of the plurality of gears is a straight line. Preferably, the line connecting the rotation centers of the plurality of gears is parallel to the horizontal direction. Furthermore, when viewed in the first direction, the plurality of gears overlap with at least a portion of the second-stage gear 612 to make full use of the space of the developing chamber.

[0220] Example 9

[0221] like Figure 33 As shown, the developing cartridge 10 also includes a power receiver 112, which is used to make electrical contact with the power output component P5 in the imaging device P to receive power and directly or indirectly transmit the power to at least one of the developing roller 13 and the powder feeding roller 15. For example, the power receiver 112 transmits the power directly or indirectly to the developing roller shaft 132. When the developing roller shaft 132 is not conductive, the power receiver 112 can also transmit the power directly or indirectly to the developing layer 131.

[0222] like Figure 34 As shown, when viewed along the left-right direction, the power receiver 112 is located outside the projection range of the first force receiver 121, which can reduce the impact of the vibration generated by the first force receiver 121 on the electrical contact between the power receiver 112 and the power output unit.

[0223] Preferably, when viewed in the left-right direction, the part of the power receiver 112 that is in contact with the power output unit is located outside the projection range of the first force receiving part 121.

[0224] Preferably, in the front-to-back direction, the power receiver 112 is further away from the developing roller 13 than the first force receiver 121, which reduces the possibility of toner flying off the surface of the developing roller 13 adhering to the power receiver 112.

[0225] Continue as Figure 33 As shown, in this embodiment, the bottom shell 11a and the top cover 11b can also be joined together in the front-back direction, and the welding surface 11c will be perpendicular to the front-back direction. Similarly, as... Figure 34 As shown, when viewed along the left-right direction, the welding surface 11c is still located outside the first force receiving part 121.

[0226] Similarly, the developing cartridge 10 in this embodiment is still provided with a pressure-bearing component 17, such as... Figure 33 As shown, the pressure-bearing component 17 includes a left forced push portion 17L and a right forced push portion 17R spaced apart from each other in the left-right direction, and at least one of the left forced push portion 17L and the right forced push portion 17R is not provided on the developing frame 11.

[0227] In some embodiments, the left forced pushing part 17L is arranged on the first end cover 103, and when the left forced pushing part 17L is abutted by the pressing member, the force applied by the pressing member is transmitted to the developing frame 11 through the first end cover 103.

[0228] In some embodiments, the right forced pushing part 17R is arranged on the second end cover 104, and when the right forced pushing part 17R is abutted by the pressing member, the force applied by the pressing member is transmitted to the developing frame 11 through the second end cover 104.

[0229] In some embodiments, the developing cartridge 10 is further provided with a cover member 85 for sealing the powder filling port 84, and the right forced pushing part 17R can also be arranged on the cover member 85, and when the right forced pushing part 17R is abutted by the pressing member, the force applied by the pressing member is transmitted to the developing frame 11 through the cover member 85.

[0230] In some embodiments, the developing cartridge 10 further comprises a conductive bracket 117 connected with the developing frame 11, and the power receiving member 112 is arranged on the conductive bracket 117, and the right forced pushing part 17R can also be arranged on the conductive bracket 11.

[0231] As shown in Figure 35 The developing cartridge 10 further comprises a first sealing member 114 and a second sealing member 113, wherein the first sealing member 114 extends along the left-right direction and is used for sealing the side of the powder outlet blade 25 facing the developing frame 11, so as to prevent the toner from leaking between the powder outlet blade 25 and the developing frame 25, and the second sealing member 113 is arranged at the two ends of the developing roller 13 and is used for sealing the developing roller 13, so as to prevent the toner from leaking from the two ends of the developing roller 13.

[0232] In this embodiment, the first sealing member 114 and the second sealing member 113 are both arranged as elastic members such as sponges and felts, the elastic modulus of the first sealing member 114 is greater than that of the second sealing member 113, and compared with the second sealing member 113, the first sealing member 114 with a longer size can obtain a smaller compression amount, so that the powder outlet blade 25 can be more stably supported.

[0233] In some embodiments, the left and right ends of the developing cartridge 10 are both provided with a separation force receiving member 18, and when the separation force receiving member 18 receives the force applied by the separation force transmitting member 206 / separation force applying member, the left and right ends of the developing roller 13 are separated from the photosensitive drum 201.

[0234] In some embodiments, a separation force receiving member 18 is provided at one of the left and right ends of the developing cartridge 10. When the separation force receiving member 18 receives the force applied by the separation force transmitting member 206 / separation force applying member, one of the left and right ends of the developing roller 13 may separate from the photosensitive drum 201, while the other end remains close to / in contact with the photosensitive drum 201.

[0235] When only the first end 101 is provided with the separation force receiving member 18, such as Figure 36 As shown, before the separating force receiving component 18 receives the separating force, the rotation axis L1 of the developing roller 13 and the rotation axis L2 of the photosensitive drum 201 are parallel to each other, as... Figure 37 As shown, when the separation force receiving member 18 receives the separation force, the developing roller 13 moves along the developing frame 11. Figure 36 When rotating in the direction indicated by r, at the first end 101, the developing roller 13 and the photosensitive drum 201 separate from each other, while at the second end 102, the developing roller 13 and the photosensitive drum 201 remain close to each other / in contact with each other. Along the direction from left to right, the distance between the rotation axis L1 of the developing roller 13 and the rotation axis L2 of the photosensitive drum 201 gradually decreases. Conversely, when only the second end 102 is provided with the separation force receiving member 18, after the separation force receiving member 18 receives the separation force, at the first end 101, the developing roller 13 and the photosensitive drum 201 close to each other / in contact with each other, while at the second end 102, the developing roller 13 and the photosensitive drum 201 separate from each other. Along the direction from left to right, the distance between the rotation axis L1 of the developing roller 13 and the rotation axis L2 of the photosensitive drum 201 gradually increases.

[0236] As can be seen, when only one separation force receiving component 18 is provided in the developing cartridge 10, the distance between the rotation axis L1 of the developing roller 13 and the rotation axis L2 of the photosensitive drum 201 will gradually change in the left and right direction. This design is beneficial to simplifying the structure of the developing cartridge 10. The above embodiments can be combined with each other and also fall within the protection scope of this utility model.

Claims

1. A developing cartridge detachably installed into a main assembly of an image forming apparatus, the image forming apparatus being provided with a detection device and a grounding terminal, the developing cartridge comprising: a developing frame internally provided with a powder reservoir for accommodating toner; a first end cover installed on the developing frame; a developing roller rotatably provided on the developing frame; a powder outlet blade fixedly installed on the developing frame and in contact with an outer surface of the developing roller; and a powder feeding roller rotatably provided on the developing frame for supplying the toner accommodated in the powder reservoir toward the developing roller, characterized in that the developing cartridge further comprises: a detected device, the detected device comprising a conductive assembly and a first voltage control member, the conductive assembly being electrically connected with the detection device in a state where the developing cartridge is installed into the image forming apparatus, the first voltage control member being configured to control on-off of electrical connection between the detection device and the grounding terminal. The developing cartridge has opposite first and second end portions in a longitudinal direction of the developing cartridge. The conductive assembly further comprises first, second, third and fourth conductive members electrically connected in sequence, the first conductive member having at least a portion disposed at the first end portion, the second conductive member being electrically connected with the first conductive member and having at least a portion extending between the first and second end portions of the developing cartridge, the third conductive member being electrically connected with the second conductive member and having at least a portion at the second end portion of the developing cartridge, the fourth conductive member being selectively electrically connected with the third conductive member and being electrically connectable with the grounding terminal; and wherein The second conductive member is at least one of the developing roller, the powder feeding roller and the powder outlet blade. The developing cartridge has opposite first and second end portions in a longitudinal direction of the developing cartridge. The conductive assembly further comprises first, second, third and fourth conductive members electrically connected in sequence, the first conductive member having at least a portion disposed at the first end portion, the second conductive member being electrically connected with the first conductive member and having at least a portion extending between the first and second end portions of the developing cartridge, the third conductive member being electrically connected with the second conductive member and having at least a portion at the second end portion of the developing cartridge, the fourth conductive member being electrically connected with the third conductive member and being selectively electrically connectable with the grounding terminal; and wherein The second conductive member is at least one of the developing roller, the powder feeding roller and the powder outlet blade. The first conductive member is in contact with a longitudinal end surface of the powder outlet blade.

2. The process cartridge according to claim 1, wherein The first conductive member is in contact with a longitudinal end surface of a developing layer of the developing roller or a longitudinal end surface of a developing roller shaft. The third conductive member is in electrical contact with at least one of the powder feeding roller and the powder outlet blade. The developing cartridge further comprises a first force receiving portion disposed at the first end portion, the first force receiving portion being configured to receive a driving force from the image forming apparatus; 3. The process cartridge of claim 1, wherein, The first voltage control member is provided with a first driving portion configured to drive the third conductive member into electrical contact with the fourth conductive member; In the longitudinal direction of the developing cartridge, the first force receiving portion has a first end surface and the first driving portion has a second end surface, the first end surface and the second end surface are not flush with each other, and a distance between the first end surface and the second end surface is not less than 13 mm. ​ 4. The process cartridge according to claim 2 or 3, wherein ​ 5. The process cartridge according to claim 2 or 3, wherein ​ 6. The process cartridge according to claim 2 or 3, wherein ​ 7. The process cartridge according to claim 2 or 3, wherein ​ ​ ​ 8. The process cartridge of claim 1, wherein, The developing cartridge further includes a relief portion provided on the first end cover, and at least a portion of the first voltage control member is outwardly exposed through the relief portion.

9. The process cartridge of claim 1, wherein, The developing cartridge includes a first driving force receiving member that receives a driving force from the image forming device to rotate; the powder outletting blade includes a blade holder and a blade, the blade holder is fixedly installed on the developing frame, and the blade is fixedly installed on the blade holder; the blade holder includes a first part and a second part connected to each other, a bending portion is formed between the first part and the second part, and the bending portion is located outside a projection range of the first driving force receiving member in a longitudinal direction of the developing cartridge.

10. The developer cartridge of claim 1, wherein, The detection device includes a detection unit capable of forming a conduction circuit, a power supply, and a switching member capable of moving between a closed position and an open position, and the conductive assembly is capable of electrically connecting the switching member and the ground end.

Images