Developing cartridge

Abstract

The present utility model relates to a developing cartridge detachably mounted to a main assembly of an imaging device. The imaging device is provided with a detection apparatus and a grounding end. The developing cartridge comprises: a developing frame, in which a toner container for containing toner is provided; a first end cover mounted on the developing frame; a developing roller rotatably arranged on the developing frame; a toner discharging blade fixedly mounted on the developing frame and in contact with the outer surface of the developing roller; and a toner feeding roller rotatably arranged on the developing frame and used for supplying the toner contained in the toner container to the developing roller. The developing cartridge further comprises an apparatus under detection, and the apparatus under detection comprises a conductive assembly and a first voltage control component. When the developing cartridge is mounted to the imaging device, the conductive assembly is electrically connected to the detection apparatus, and the first voltage control component is used for controlling on-off of electrical connection between the detection apparatus and the grounding end, so that the detection precision of the developing cartridge is improved.

Description

Developing cartridge TECHNICAL FIELD

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

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

[0003] The detection apparatus 50 comprises a detection unit 501, a power supply 502 and a switch member 503, which can be electrically connected to each other to form a circuit capable of being electrically conducted, and the switch member 503 is used to control the on-off of the circuit. At least a part of the switch member 503 is made of a 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 FIG. 1, when in the initial position (also referred to as the open position), the switch member 503 is in a state of not conducting the circuit. When in the closed position (as shown in FIG. 2), the switch member 503 closes the circuit, the circuit is conducted, and the detection unit 501 can detect an electric signal. When in the open position (as shown in FIG. 3), the switch member 503 is in a state of not conducting the circuit. 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 cartridge. The information of the developing cartridge refers to whether the developing cartridge is a new product, or information such as the size, capacity and model of the developing cartridge.

[0004] The developing cartridge which can be detachably installed into the above-mentioned imaging device 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, and 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, and the developing cartridge is detected. The developing cartridge thus arranged has more transmission mechanisms, the structure of the detected apparatus is complex, and even the detection accuracy of the developing cartridge is affected.

[0005] TECHNICAL SOLUTION

[0006] The developing cartridge 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:

[0007] A developing cartridge detachably mounted to an image forming apparatus provided with a detection device and a grounding terminal, the developing cartridge comprising a first driving force receiving member, a developing frame, and a developing roller rotatably mounted in the developing frame, the developing roller for carrying toner accommodated by the developing frame, the first driving force receiving member for receiving a driving force from the image forming apparatus, a direction parallel to an axis of rotation of the developing roller being a left-right direction;

[0008] The developing cartridge comprises a storage unit for storing basic information of the developing cartridge, the storage unit capable of receiving an instruction from the image forming apparatus to control the control circuit board; the storage unit comprises a substrate, a memory, and electrical contacts, the electrical contacts and the memory both disposed on the substrate, the plurality of electrical contacts comprising at least one grounding terminal for electrically connecting with the grounding terminal to achieve grounding;

[0009] The developing cartridge further comprises a detected device capable of being detected by the detection device, the detected device comprising a first voltage control member and a conductive assembly, the conductive assembly comprising a first conductive member, a third conductive member, and a fourth conductive member, the first conductive member for receiving power from the image forming apparatus and supplying the power to at least the developing roller;

[0010] The first voltage control member is for controlling the on-off of the electrical connection between the first conductive member and the grounding terminal, the first voltage control member being provided as the control circuit board, the control circuit board being provided with a control program for controlling whether the third conductive member and the fourth conductive member are electrically connected / electrically contacted / electrically disconnected;

[0011] The third conductive member comprises a first connecting terminal for electrically connecting with the first conductive member and a second connecting terminal for electrically connecting with the control circuit board, one end of the fourth conductive member for electrically connecting with the grounding terminal, and the other end of the fourth conductive member for electrically connecting with the control circuit board; when the third conductive member and the fourth conductive member are electrically connected, the first conductive member / developing roller is electrically connected with the grounding terminal, and when the third conductive member and the fourth conductive member are electrically disconnected, the first conductive member / developing roller does not form an electrical connection with the grounding terminal.

[0012] The first voltage control member / control circuit board is integrated on the storage unit / memory.

[0013] The first voltage control member / control circuit board is provided separately from the storage unit / memory, and the developing cartridge is further provided with a first electrical connector for electrically connecting the storage unit / memory with the first voltage control member / control circuit board.

[0014] The developing cartridge further comprises a driving force transmission member for directly or indirectly receiving a driving force from the first driving force receiving member, the driving force transmission member being capable of being driven to rotate by the driving force, the driving force transmission member comprising a lifting portion protruding in a radial direction of the driving force transmission member;

[0015] The first voltage control member further comprises a switch control member triggered by the driving force transmission member, the switch control member is provided with a second electrical connection member, a third electrical connection member, a fourth electrical connection member and a fifth electrical connection member, the second connection end of the third conductive member is used for electrical connection / electrical contact with the second electrical connection member, the contact end of the fourth conductive member is used for electrical connection / electrical contact with the third electrical connection member, the fourth electrical connection member is used for electrical connection / electrical disconnection with the fifth electrical connection member;

[0016] During the rotation of the driving force transmission member, the lifting part can rotate together to force the fourth electrical connection member to be electrically connected / electrically contacted with the fifth electrical connection member, when the fourth electrical connection member is electrically connected with the fifth electrical connection member, the switch control member is triggered, and the control circuit board can control whether the third conductive member and the fourth conductive member are electrically connected / electrically disconnected according to the instruction of the imaging device; when the fourth electrical connection member is electrically disconnected with the fifth electrical connection member, the switch control member cannot be triggered, and the control circuit board cannot execute the instruction of the imaging device.

[0017] The developing cartridge is further provided with a retaining member for maintaining the fourth electrical connection member to be electrically connected / electrically contacted with the fifth electrical connection member.

[0018] The retaining member is the lifting part.

[0019] One end of the fourth conductive member is used for electrical connection with a ground terminal of the storage unit.

[0020] The developing cartridge can be detachably mounted to a drum cartridge provided with a photosensitive drum, and the developing roller is used for supplying carbon powder to the photosensitive drum to develop an electrostatic latent image formed on the surface of the photosensitive drum.

[0021] The drum cartridge is provided with a photosensitive drum ground end, and one end of the fourth conductive member is used for electrical connection with the photosensitive drum ground end.

[0022] Compared with the prior art, in the developing cartridge, the first conductive member is provided as a control circuit board, the second connection end of the third conductive member and the contact end of the fourth conductive member are electrically connected with the control circuit board, the control circuit board can be triggered / activated by the triggering part, and whether the third conductive member and the fourth conductive member are electrically connected / electrically contacted is controlled through a control program preset in the control circuit board, so that the control program controls the on-off times of the third conductive member and the fourth conductive member to determine whether the developing cartridge is new, and in this way, the structure of the detected device becomes simple. BRIEF DESCRIPTION OF DRAWINGS

[0023] Fig. 1 is a schematic diagram of the internal circuit of the detection device when the switch member of the utility model is in the disconnected position (initial position);

[0024] Figure 2 is a schematic diagram of the internal circuit of the detection device when the switch member of the present application is in the closed position;

[0025] Figure 3 is a schematic diagram of the internal circuit of the detection device when the switch member of the present application is in the open position;

[0026] Figure 4 is a schematic diagram of the structure of the developing cartridge of the present application when it is installed in the image forming apparatus of the present application;

[0027] Figure 5a is a schematic diagram of the structure of the image forming apparatus of the present application;

[0028] Figure 5b is a schematic diagram of the structure of the switch member and the swing lever of the present application;

[0029] Figure 6 is a schematic diagram of the structure of the developing cartridge of the present application when it is installed in the drum cartridge of the present application;

[0030] Figure 7 is a schematic diagram of the structure of the developing cartridge of the present application when it is installed in the drum cartridge of the present application from another angle;

[0031] Figure 8 is a schematic diagram of the structure of the developing cartridge of the present application;

[0032] Figure 9 is a schematic diagram of the structure of one end of the developing cartridge of the present application;

[0033] Figure 10 is a schematic diagram of the structure of the other end of the developing cartridge of the present application;

[0034] Figure 11 is a schematic diagram of the structure of the developing cartridge of the present application from another angle;

[0035] Figure 12 is a schematic diagram of the internal circuit of the detection device when the developing cartridge of the present application is not installed in the image forming apparatus of the present application;

[0036] Figure 13 is a schematic diagram of the circuit formed between the detection device and the detected device when the developing cartridge of the present application is installed in the image forming apparatus of the present application;

[0037] Figure 14 is a schematic diagram of the circuit when the detection device and the ground terminal are connected when the developing cartridge of the present application is installed in the image forming apparatus of the present application;

[0038] Figure 15 is a schematic diagram of the structure of the developing cartridge of the present application when it is installed in the image forming apparatus of the present application;

[0039] Figure 16 is a schematic diagram of the structure of the developing cartridge of the present application when it is not installed in the image forming apparatus of the present application;

[0040] Figure 17 is a schematic diagram of the structure of the developing cartridge of the present application when it is installed in the image forming apparatus of the present application;

[0041] Fig. 18 is a structural schematic diagram of the developing box of the embodiment 4 of the present application;

[0042] Fig. 19 is a schematic diagram of the hidden part structure of the developing box of the embodiment 4 of the present application;

[0043] Fig. 20 is a schematic diagram of the internal circuit of the detection device of the developing box of the embodiment 4 of the present application when the developing box is not installed to the image forming device;

[0044] Fig. 21 is a schematic diagram of the circuit formed between the detection device and the detected device when the developing box of the embodiment 4 of the present application is installed to the image forming device;

[0045] Fig. 22 is a schematic diagram of the circuit when the detection device and the grounding terminal are conducted when the developing box of the embodiment 4 of the present application is installed to the image forming device;

[0046] Fig. 23 is a schematic diagram of the overall structure of the developing box of the embodiment 5 of the present application;

[0047] Fig. 24 is a schematic diagram of the partial structure of the developing box of the embodiment 5 of the present application;

[0048] Fig. 25 is a schematic diagram of the assembly state of the first end cover, the movable piece, the third conductive member and the fourth conductive member of the developing box of the embodiment 5 of the present application;

[0049] Fig. 26 is a schematic diagram of the disassembly state of the first end cover, the movable piece, the third conductive member and the fourth conductive member of the developing box of the embodiment 5 of the present application.

[0050] Fig. 27A is a perspective view of the developing box according to the embodiment 6 of the present application.

[0051] Fig. 27B is a plan view of the powder discharge blade according to the embodiment 6 of the present application, as viewed in the front-rear direction.

[0052] Fig. 28 is a perspective view of the second end portion of the developing box according to the embodiment 6 of the present application.

[0053] Fig. 29 is an exploded view of the developing box according to the embodiment 7 of the present application, with the first end cover separated from the developing frame.

[0054] Fig. 30 is an exploded view of the developing box according to the embodiment 8 of the present application, with the face cover separated from the bottom case.

[0055] Fig. 31 is a side view of the developing box according to the embodiment 8 of the present application, as viewed in the left-right direction, with the first end cover hidden.

[0056] Fig. 32 is a schematic diagram of the partial components of the developing box according to the embodiment 8 of the present application.

[0057] Fig. 33 is a perspective view of the developing cartridge according to the embodiment 9 of the present application.

[0058] Fig. 34 is a side view of the developing cartridge according to the embodiment 9 of the present application, viewed in the left-right direction.

[0059] Fig. 35 is a perspective view of the developing cartridge according to the embodiment 9 of the present application, viewed from the back of the developing roller and the powder outlet blade.

[0060] Fig. 36 is a simplified schematic view of the developing cartridge according to the embodiment 9 of the present application, when the developing roller and the photosensitive drum are in contact with each other.

[0061] Fig. 37 is a simplified schematic view of the developing cartridge according to the embodiment 9 of the present application, when the developing roller and the photosensitive drum are separated from each other.

[0062] Fig. 38 is a perspective view of the developing cartridge according to the embodiment 10 of the present application.

[0063] Fig. 39 is an exploded view of the second end portion of the developing cartridge according to the embodiment 10 of the present application.

[0064] Fig. 40 is a perspective view of the first end portion of the developing cartridge according to the embodiment 10 of the present application, with the first end cover hidden.

[0065] Fig. 41 is an exploded view of the first end portion of the developing cartridge according to the embodiment 10 of the present application, with the first end cover hidden.

[0066] Fig. 42 is a perspective view of the first end cover of the developing cartridge according to the embodiment 10 of the present application.

[0067] Fig. 43 is a perspective view of the developing cartridge according to the embodiment 11 of the present application, with the first end cover hidden.

[0068] Fig. 44 is an exploded view of the first end portion of the developing cartridge according to the embodiment 11 of the present application, with the first end cover hidden.

[0069] Fig. 45 is a perspective view of the developing cartridge according to another embodiment of the embodiment 11 of the present application, with the first end cover hidden.

[0070] Fig. 46 is a perspective view of the first end cover of the developing cartridge according to another embodiment of the embodiment 11 of the present application.

[0071] Fig. 47 is a perspective view of the first end portion of the developing cartridge according to the embodiment 12 of the present application, with the first end cover hidden.

[0072] Fig. 48 is a partial perspective view of the developing cartridge according to the embodiment 13 of the present application, with the first end cover hidden.

[0073] Fig. 49 is a perspective view of a detection device of the developing cartridge according to the embodiment 13 of the present application.

[0074] Fig. 50 is an enlarged view of portion A in Fig. 39.

[0075] Fig. 51 is a perspective view of the developing cartridge according to the embodiment 14 of the present application.

[0076] Fig. 52 is an exploded view of a portion of the second end portion of the developing cartridge according to the embodiment 14 of the present application.

[0077] Fig. 53A is an enlarged view of a portion of the second end portion of the developing cartridge according to the embodiment 14 of the present application.

[0078] Fig. 53B is a perspective view of a portion of the developing cartridge according to the embodiment 14 of the present application.

[0079] Fig. 54 is a perspective view of the first end portion of the developing cartridge according to the embodiment 14 of the present application.

[0080] Fig. 55 is an exploded view of a portion of the first end portion of the developing cartridge according to the embodiment 14 of the present application.

[0081] Fig. 56 is a perspective view of the first end cover of the developing cartridge according to the embodiment 15 of the present application.

[0082] Fig. 57 is a perspective view of the first end portion of the developing cartridge according to the embodiment 15 of the present application, with the first end cover hidden.

[0083] Fig. 58 is a perspective view of the first end cover of the developing cartridge according to the embodiment 15 of the present application, combined with the first voltage control member.

[0084] Fig. 59 is a perspective view of the first end cover of the developing cartridge according to the embodiment 16 of the present application.

[0085] Fig. 60 is an exploded view of a portion of the first end portion of the developing cartridge according to the embodiment 16 of the present application.

[0086] Fig. 61 is a plan view of the developing cartridge according to the embodiment 17 of the present application, with the first end cover hidden, as viewed in a left-to-right direction.

[0087] Fig. 62 is an exploded view of a portion of the first end portion of the developing cartridge according to the embodiment 18 of the present application.

[0088] Fig. 63 is an enlarged view of portion B in Fig. 62.

[0089] Fig. 64 is an exploded view of a portion of the first end portion of the developing cartridge according to the embodiment 18 of the present application.

[0090] Fig. 65 is a perspective view of a first end cover of a developing cartridge according to an embodiment of the present application.

[0091] Fig. 66 is a perspective view of the first end cover of the developing cartridge of Fig. 65 in combination with a first voltage control member.

[0092] Fig. 67 is a perspective view of a first end portion of a developing cartridge according to an embodiment of the present application.

[0093] Fig. 68 is an exploded view of a developing housing and a first driving force receiving member of the developing cartridge of Fig. 67.

[0094] Fig. 69 is a partial plan view of Fig. 68 taken along the line AA.

[0095] Fig. 70 is a perspective view of a first end portion of a developing cartridge according to an embodiment of the present application.

[0096] Figs. 71 and 72 are perspective views of the first end portion of the developing cartridge of Fig. 70 with a first end cover hidden.

[0097] Figs. 73A and 73B are perspective views of a first voltage control member of the developing cartridge of Fig. 70.

[0098] Fig. 74 is a perspective view of a conductive portion of the developing cartridge of Fig. 70.

[0099] Fig. 75 is a perspective view of the first end cover of the developing cartridge of Fig. 70 in combination with the first voltage control member.

[0100] Figs. 76 and 77 are perspective views of the first end cover of the developing cartridge of Fig. 70.

[0101] Fig. 78 is a perspective view of a developing cartridge of Fig. 77 mounted to a drum cartridge according to an embodiment of the present application.

[0102] Fig. 79 is a perspective view of a second end portion of the developing cartridge of Fig. 78.

[0103] Fig. 80 is an exploded view of the first end portion of the developing cartridge of Fig. 78.

[0104] Fig. 81 is a perspective view of the first end portion and the second end portion of the developing cartridge of Fig. 78.

[0105] Fig. 82 is a perspective view of a powder outlet blade of the developing cartridge of Fig. 78.

[0106] Fig. 83 is a plan view of the first driving force receiving member and the powder outlet blade of the developing cartridge according to the embodiment 22 of the present application, viewed in a left-to-right direction.

[0107] Fig. 84 is an exploded view of the powder outlet blade of the developing cartridge according to the embodiment 22 of the present application.

[0108] Fig. 85A is an enlarged view of a portion C in Fig. 98.

[0109] Fig. 85B is an enlarged view of a portion D in Fig. 84.

[0110] Fig. 86 is a partial perspective view of the powder outlet blade of the developing cartridge according to the embodiment 22 of the present application.

[0111] Fig. 87 is a perspective view of the second end portion of the developing cartridge according to the embodiment 22 of the present application.

[0112] Fig. 88 is a perspective view of the first conductive member of the developing cartridge according to the embodiment 23 of the present application.

[0113] Fig. 89 is an exploded view of the second end portion of the developing cartridge according to the embodiment 23 of the present application.

[0114] Fig. 90 is an enlarged view of a portion of the second end portion of the developing cartridge according to the embodiment 23 of the present application.

[0115] Fig. 91 is a perspective view of the second end portion of the developing cartridge according to the embodiment 24 of the present application.

[0116] Figs. 92 and 93 are partial perspective views of the developing cartridge according to the embodiment 24 of the present application.

[0117] Fig. 94 is a perspective view of the developing cartridge according to the embodiment 25 of the present application.

[0118] Fig. 95 is a perspective view of the first end portion of the developing cartridge according to the embodiment 25 of the present application, with the first end cover hidden.

[0119] Figs. 96A and 96B are perspective views of the first end portion of the developing cartridge according to the embodiment 26 of the present application, with the first end cover hidden.

[0120] Figs. 97 and 98 are perspective views of the first end portion of the developing cartridge according to the embodiment 27 of the present application, with the first end cover hidden.

[0121] Fig. 99 is a schematic view of the developing cartridge according to the embodiment 27 of the present application, with the switch control member not triggered by the driving force transmission member.

[0122] Fig. 100 is a schematic view of the developing cartridge according to the embodiment 27 of the present application, with the switch control member triggered by the driving force transmission member. DETAILED DESCRIPTION

[0123] The utility model will be further described below in combination with the drawings and examples.

[0124] Example 1

[0125] As shown in FIGS. 1-14, the present embodiment provides an imaging device P, which comprises a main assembly P1, a door cover P2, a detection device 50 and a separation force applying member (not shown in the figure), wherein the main assembly P1 is provided with a mounting cavity P3 for mounting a developing cartridge 10 and a main frame P4, the mounting cavity P3 has a first inner side wall P31, and a plurality of grounding conductive members P311 are exposed from the inner side wall towards the inside of the mounting cavity P3.

[0126] The main frame P4 encloses the four sides of the mounting cavity P3, and at least a part of the main frame P4 is made of a conductive material. The main frame P4 has a first upper end wall P41 which is conductive and grounded, and a second upper end wall P42 which is non-conductive, the second upper end wall P42 is closer to the inside of the mounting cavity P3 than the first upper end wall P41, the first upper end wall P41 is made of a conductive metal material, and the second upper end wall P42 is made of a non-conductive resin. The second upper end wall P42 comprises a first face P43 and a second face P44, and a height difference is formed between the first face P43 and the second face P44, 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. The door cover P2 can open or close the mounting cavity P3, and is rotatably mounted on the main frame P4, and the door cover P2 is provided with a second inner side wall P21 which is conductive and grounded.

[0127] In some embodiments, a label P47 is attached to the first upper end wall P41, such label P47 is used to record information such as installation operation of the developing cartridge. 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.

[0128] The detection device 50 comprises a detection unit 501, a power supply 502 and a switch member 503, a processor (not shown), the detection unit 501, the power supply 502 and the switch member 503 can be electrically connected to form a conduction circuit, the switch member 503 is used to control the on-off of the circuit, the detection unit 501 can detect the change of the electric signal according to the on-off of the circuit, thereby transmitting different electric signals to the processor, so as to judge the basic information of the developing cartridge.

[0129] In some embodiments, the switch member 503 can be omitted, the detection unit 501 is electrically connected to the conductive part of the developing cartridge (to be described below as a detected device), so as to affect the electric signal of the detection unit through the voltage change of the detected device, so that the processor can judge the basic information of the developing cartridge according to different electric signals.

[0130] In other embodiments, the detection unit 501 can be a capacitive sensor, a pressure sensor, a photoelectric sensor, or an electromagnetic sensor, etc.

[0131] In the present embodiment, the switch member 503 is made of a conductive material, and is arranged as a movable component, specifically, is movable relative to the developing frame 11, and has a closed position and an open position. In the present embodiment, at least a part of the switch member is arranged on the swing lever 504, and the switch member 503 is movable between the closed position and the open position along with the swing of the swing lever 504. As shown in FIG. 1, in the open position (which can also be regarded as the initial position), the switch member 503 is in a state of not conducting the circuit; in the closed position (as shown in FIG. 2), the switch member 503 closes the circuit, the circuit is conducted, and the detection unit 501 can detect the electrical signal. A separation force applying member (not shown in the figure) is arranged in the main assembly P1, and can apply a force to the developing cartridge 10.

[0132] As shown in FIGS. 4-6, the developing cartridge 10 is detachably installed in a drum cartridge 20 provided with the photosensitive drum 201, and the drum cartridge 20 is detachably installed into the main assembly P1 of the above-mentioned image forming apparatus P. For the convenience of description, the front-rear direction is substantially parallel to the direction in which the drum cartridge 20 is installed into the electrophotographic image forming apparatus P, the side on which the photosensitive drum 201 is located is the front side, and the side opposite to the photosensitive drum 201 is the rear side; the left-right direction is parallel to the longitudinal direction of the drum cartridge 20, and the side from which the driving force is received by the electronic image forming apparatus P is the left side, and the side opposite to the left side is the right side; and the up-down direction is perpendicular to the front-rear direction and the left-right direction.

[0133] As shown in FIGS. 6-8, the drum cartridge 20 includes a drum frame 202, the photosensitive drum 201, a second driving force receiving member 203, a charging component 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 installed on the drum frame 202; the second driving force receiving member 203 is located on one side of the drum cartridge 20, and is used for receiving the driving force from the image forming apparatus P and directly or indirectly driving the photosensitive drum 201 to rotate. The charging component 204 is used for charging the photosensitive drum 201, and the first electrode 205 is capable of receiving the first power from the image forming apparatus P and transmitting the first power to the charging component 204. The separation force transmitting member 206 is arranged on the drum frame 202, and is capable of moving by receiving the force of the separation force applying member and transmitting the separation force to the developing cartridge 10; in the present embodiment, the separation force transmitting member 206 is arranged as a rotating member. The pressing member is capable of applying a pressing force to the developing cartridge 10, so that the developing roller 13 arranged on the developing cartridge 10 and the photosensitive drum 201 contact each other. The locking member 207 is used for locking the developing cartridge 10.

[0134] As shown in FIGS. 7-11, 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, and in some developing cartridges 10, at least one of a powder feeding roller 15 and an agitating member 16 is further provided.

[0135] In a longitudinal direction of the developing cartridge 10, the developing cartridge 10 has a first end portion 101 and a second end portion 102 opposite to the first end portion 101. The developing frame 11 is provided with a powder tank 110 (as shown in FIG. 40) for accommodating toner (developer). The developing roller 13 is for carrying the toner accommodated by the developing frame 11, and the developing roller 13 includes a developing layer 131 and a developing roller shaft 132, the developing layer 131 is wrapped on a radially outer side of the developing roller shaft 132, and the developing roller shaft 132 and the developing layer 131 are both electrically conductive. In a direction of the developing cartridge 10 being mounted to the image forming device P, the developing roller 13 is rotatably provided at a front side of the developing frame 11, is exposed from the front side of the developing frame 11 and is opposite to the photosensitive drum 201 when mounted to the image forming device P, so as to be able to perform developing work. The storage unit 14 is for storing information such as specifications and model numbers of the developing cartridge 10, and includes a substrate 141 having a front side and a back side opposite to the front side, a memory, and an electrical contact, the electrical contact and the memory are both provided on the substrate 141, wherein the electrical contact is provided on the front side of the substrate 141, and the memory is provided on the back side of the substrate 141. The electrical contact has a plurality (two or more), and the plurality of electrical contacts includes at least one ground terminal 142, which is capable of being electrically connected with the image forming device P to achieve grounding. In the present embodiment, the storage unit 14 is provided at the first end portion 101 of the developing cartridge 10.

[0136] 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.

[0137] In the 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.

[0138] 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.

[0139] 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.

[0140] 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.

[0141] 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 installation and dismounting steps of the first driving force receiving member 12 can be simplified.

[0142] 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.

[0143] 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.

[0144] 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.

[0145] In some embodiments, the separating force receiving member 18 is configured to receive the separating force along the left-right direction / longitudinal direction, or in other words, the entire separating 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 separating force receiving member 18 does not extend beyond the projection range of the developing roller 13 or the developing roller driving gear 133.

[0146] As shown in FIGS. 7-11, the developing cartridge 10 of the present embodiment further includes a detected device 70 that can be detected by the detecting device 50 of the image forming apparatus P.

[0147] The detected device 70 includes a conductive assembly 72 that can be electrically connected to the detecting device 50 / switch member 503 of the image forming apparatus P and a ground terminal K of the image forming apparatus P in the installed state to the image forming apparatus P, and a first voltage control member 71 for controlling the on-off of the electrical connection between the detecting device 50 or the switch member 503 and the ground terminal K, so that the voltage value detected by the detecting unit 501 changes. Specifically, the conductive assembly 72 is provided with a first electrical connection portion 73 for electrical 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, an image forming apparatus stylus 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. Depending on the position of the ground terminal K, the stylus in the image forming apparatus P, the inner wall of the door cover P2, the first upper end wall P41, the ground conductive member P311, etc. can be referred to as the device side ground terminal, and the ground terminal 142 in the developing cartridge 10, the photosensitive drum ground terminal for grounding the photosensitive drum 201, etc. can be referred to as the cartridge side ground terminal.

[0148] In the present embodiment, the first electrical connection portion 73 is preferably in contact with the first upper end wall P41; in some embodiments, the first electrical connection portion 73 is in contact with the first gap P471 or the second gap P472.

[0149] 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 provided 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.

[0150] 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.

[0151] 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.

[0152] 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 first end portion 101 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.

[0153] 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.

[0154] 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.

[0155] 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.

[0156] 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.

[0157] 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.

[0158] 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.

[0159] 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.

[0160] 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 portion 710, a first driving force receiving portion 711 provided on the second body portion 710 for engaging with the first driving force receiving member 12 and receiving driving force, and a first driving portion 712 provided on the second body portion 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.

[0161] In the embodiment, the first voltage control member 71 at least partially overlaps the storage unit 14 in the longitudinal direction of the developing cartridge, i.e. the left-right direction.

[0162] In the embodiment, the developing cartridge 10 further comprises a force applying portion 105 capable of applying a 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 portion 105 is provided on the first conductive member 74. Alternatively, the force applying portion 105 can be provided separately from the first conductive member 74.

[0163] In the embodiment, the developing cartridge 10 further comprises a speed reduction mechanism provided at the first end portion 101 of the developing cartridge 10, which at least comprises a first transmission member 81 and a second transmission member 82, the first transmission member 81 comprises a third gear portion 811 and a fourth gear portion 812, the diameter of the third gear portion 811 is smaller than that of the fourth gear portion 812, and the third gear portion 811 is closer to the developing frame 11 than the fourth gear portion 812.

[0164] The second transmission member 82 comprises a fifth gear portion 821 and a sixth gear portion 822, the diameter of the fifth gear portion 821 is larger than that of the sixth gear portion 822, and the fifth gear portion 821 is closer to the developing frame 11 than the sixth gear portion 822.

[0165] The fourth gear portion 812 is capable of engaging with the first gear portion 123 of the first driving force receiving member 12, the third gear portion 811 is capable of engaging with the fifth gear portion 821 of the second transmission member 82, and the sixth gear portion 822 of the second transmission member 82 is capable of engaging with the first driving force receiving portion 711 of the first voltage control member 71. Preferably, the diameter of the third gear portion 811 is smaller than the diameters of the first gear portion 123 and the second gear portion 124. Preferably, the diameter of the sixth gear portion 822 is smaller than the diameter of the third gear portion 811. Preferably, the diameter of the first driving force receiving portion 711 of the first voltage control member 71 is smaller than the diameter of the sixth gear portion 822.

[0166] 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.

[0167] 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.

[0168] 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.

[0169] 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 FIG. 13), the first conductive member 74 is electrically connected with the switch member 503, the fourth conductive member 77 is electrically connected with the ground terminal K, and the third conductive member 76 and the fourth conductive member 77 are not in contact. At this time, the detection unit 501 detects that the voltage value is U1.

[0170] The process of detecting the developing cartridge is described in combination with Figs. 12-14.

[0171] When the developing cartridge 10 starts to be detected, the first driving force receiving member 12 receives the driving force to rotate, and the first voltage control member 71 receives the driving force to rotate. With the rotation of the first voltage control member 71, the first driving portion 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.

[0172] In the present embodiment, the voltage control member is provided with a plurality of first driving portions 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 the driving force, the first driving portion 712 no longer applies the 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.

[0173] In some embodiments, an impedance element is further provided in the conductive assembly 72.

[0174] 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.

[0175] 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 the driving force from the first driving force receiving member 12.

[0176] 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.

[0177] In some embodiments, the second conductive member 75 can be an independently provided conductive member.

[0178] The developing cartridge 10 with the above structure improves a new detection structure, and the detection accuracy is improved; the structure is further simplified.

[0179] The developing cartridge 10 with the above structure does not need to set the mechanism of the dial opening and closing 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 the noise, and improves the user experience.

[0180] Embodiment 2

[0181] This embodiment is an improvement on the basis of Embodiment 1, and the same parts will not be described again. Only the main differences will be described below. The same parts of the description can refer to the drawings of the previous embodiments.

[0182] As shown in FIG. 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 protrudes 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 protrudes from the first end cover 103 to the outside.

[0183] 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.

[0184] 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.

[0185] 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 protrude from the developing frame by different amounts.

[0186] 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 electrical connection part 73a being arranged to be in contact with the first upper end wall P41, the problem of poor contact caused by contact with the label P47 is avoided.

[0187] 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.

[0188] Embodiment 3

[0189] This embodiment is a further improvement on the basis of Embodiment 1 or 2, and the same parts will not be described again. Only the main differences will be described below. The same parts of the description can refer to the drawings of the previous embodiments.

[0190] As shown in FIG. 16 and FIG. 17, the first electrical connection 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 electrical connection part 73b protrudes relative to the developing frame 11 and can be electrically connected with the ground terminal K. In the fourth position, the first electrical connection part 73b is retracted relative to the third position, preferably retracted relative to the developing frame 11. The movement of the first electrical connection part 73b can be sliding, swinging or rotating.

[0191] In the present embodiment, the first electric connection part 73b further comprises a second force receiving part 731, which is capable of moving in response to a force of the image forming device P, in particular, in response to a force of the second surface P44.

[0192] Preferably, the first electric connection part 73b is movable in the front-rear direction of the developing cartridge 10. As shown in FIG. 16, when the developing cartridge 10 is not installed to the image forming device P, the first electric connection part 73b is located at the third position, and the first electric connection part 73b does not protrude the rear end of the developing cartridge 10; as shown in FIG. 17, when the developing cartridge 10 is installed to the image forming device P, the first electric connection part 73b abuts against the second surface P44 of the second upper end wall P42 of the image forming device P, and a part of the first electric connection part 73b protrudes the rear end of the developing cartridge 10, and when the door cover P2 is closed, the first electric connection part 73b is capable of electrically connecting with the second inner side wall P21 of the door cover P2 to achieve grounding.

[0193] The developing cartridge 10 with such a structure can retract the first electric connection part 73b into the developing frame 11 when packaging the developing cartridge 10, so as to avoid damage during packaging / transportation.

[0194] In some embodiments, the second force receiving part 731 is directly or indirectly driven by the first driving force receiving member 12, so that the first electric connection part 73b moves between the third position and the fourth position.

[0195] The grounding end 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 member P311.

[0196] Embodiment 4

[0197] 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.

[0198] As shown in FIGS. 18-22, in the present embodiment, the first voltage control member 71 controls the conductive assembly 72c to selectively contact the grounding end K, i.e., the first electric connection part 73c of the conductive assembly 72c and the grounding end K can be switched between the electrically contacting state and the non-electrically contacting state.

[0199] The conductive assembly 72c of the present embodiment includes a first conductive member 74c, a second conductive member 75c, a third conductive member 76c, and a fourth conductive member 77c, wherein the first conductive member 74c is electrically connected with the second conductive member 75c, and the first conductive member 74c is electrically connectable with the switch member 503 when the developing cartridge 10 is installed into the image forming device P. The second conductive member 75c extends from the first end portion 101 to the second end portion 102 of the developing cartridge 10, and the second conductive member 75c is electrically connected with the third conductive member 76c, and the third conductive member 76c is electrically connected with the fourth conductive member 77c, and the fourth conductive member 77c is electrically connectable with the grounding terminal K. Preferably, the third conductive member 76c is integrally formed with or fixedly connected with the fourth conductive member 77c.

[0200] The first electric connection portion 73c of the fourth conductive member 77c is configured to be movable between a third position and a fourth position. In the third position, the first electric connection portion 73c protrudes relative to the developing frame 11 or the first end cover 103, and is electrically connectable with the grounding terminal K. In the fourth position, the first electric connection portion 73c is retracted relative to the third position, and preferably retracted relative to the developing frame 11. The movement of the first electric connection portion 73c can be sliding, swinging, or rotating. In the present embodiment, the first electric connection portion 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 groove 731c for receiving at least a portion of the first electric connection portion 73c. The first electric connection portion 73c is provided with a third force receiving portion 732c. During the rotation of the first voltage control member 71, the first driving portion 712 is capable of applying a force to the third force receiving portion 732c of the first electric connection portion 73c, so that the first electric connection portion 73c moves from the fourth position to the third position, and the electrical connection between the first electric connection portion 73c and the grounding terminal K is achieved. Preferably, the first electric connection portion 73c is configured to move in the front-rear direction of the developing cartridge 10.

[0201] The detected device further includes a first reset member 733c for forcing the first electric connection portion 73c to move from the third position to the fourth position. For example, when the first driving portion 712 no longer applies a force to the force receiving portion of the first electric connection portion 73c, the first electric connection portion 73c is capable of moving 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, and the third conductive member 76c is configured as a torsion spring structure, which accumulates elastic potential energy when the first electric connection portion 73c moves from the fourth position to the third position, and releases the elastic potential energy when the first driving portion 712 no longer applies a force to the force receiving portion of the first electric connection portion 73c, so that the first electric connection portion 73c is capable of moving from the third position to the fourth position.

[0202] In combination with Figs. 20-22, when the developing cartridge 10 is not installed to the image forming apparatus P, the switch member 503 is in the open position of the non-conduction circuit as shown in Fig. 21. When the developing cartridge 10 is installed to the image forming apparatus P, the swing lever 504 is acted by the force applying portion 105 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, the voltage value detected by the detection unit 501 is U1.

[0203] When the developing cartridge 10 starts to be detected, in combination with Fig. 22, the first driving portion 712 drives the first electric connecting portion 73c to move from the fourth position to the third position, at this time the first electric connecting portion 73c is in contact with the ground terminal K, the voltage value detected by the detection unit 501 is U2; when the first driving portion 712 no longer drives the first electric connecting portion 73c, the first electric connecting portion 73c is moved from the third position to the fourth position under the action of the first reset member 733c, at this time the first electric connecting portion 73c is not in contact with the ground terminal K, the voltage value detected by the detection unit 501 is U1; the values of U1 and U2 are different, the detection unit 501 detects the change of the voltage signal to determine the information of the developing cartridge 10.

[0204] The developing cartridge 10 with the above structure is more stable in electric connection of the detected device 70.

[0205] The ground terminal K can be at least one of the ground terminal 142 of the storage unit 14, the image forming apparatus contact needle 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.

[0206] Embodiment 5

[0207] This embodiment is a further improvement based on Embodiment 4, the same parts are not described again, only the main differences are introduced below. The same parts of the description can refer to the drawings of the previous embodiments.

[0208] As shown in Figs. 1-5b, 23-26, in this embodiment, the electrically conductive assembly is capable of electrically connecting the switch member, and the electrically conductive assembly and the ground terminal K can be switched between the electrically connected state and the non-electrically connected state. Specifically, the first voltage control member 71f controls the electrically conductive assembly to selectively contact the ground terminal K, that is, the first electric connecting portion 73f of the electrically conductive assembly and the ground terminal K can be switched between the electrically connected state and the non-electrically connected state.

[0209] 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 electrically connectable with the switch member 503 when the developing cartridge 10 is installed in the image forming device P. In the present embodiment, the first conductive member 74f is made of a conductive metal piece.

[0210] The second conductive member 75f extends from the first end portion 101 of the developing cartridge 10 to the second end portion 102 of the developing cartridge 10, and 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, the powder outlet blade 25, or at least includes a conductive part independent of the developing roller 13, the powder feeding roller 15 and the powder outlet blade 25. In the present embodiment, the powder outlet blade 25 is used as the second conductive member 75f.

[0211] The third conductive member 76f is located at the first end portion 101 of the developing cartridge 10, and is electrically connected with the fourth conductive member 77f, which is electrically connectable with the grounding terminal K. Preferably, the third conductive member 76f is integrally formed or fixedly connected with the fourth conductive member 77f.

[0212] The first electrically connecting portion 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 connecting portion 73f protrudes relative to the developing frame 11 or the first end cover 103f, and is electrically contactable with the grounding terminal K. In the fourth position, the first electrically connecting portion 73f is retracted relative to the third position, and is preferably retracted relative to the developing frame 11 or the first end cover 103f. The first electrically connecting portion 73f is configured to be elastically deformable, so as to be elastically contactable with the grounding terminal K (the door cover), thereby improving the stability of the electrical contact.

[0213] 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 movable 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 is moved 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 is recovered. Specifically, when the first electrical connection part 73f is moved from the fourth position to the third position under the drive 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 drive or indirect drive) by the first voltage control member 71f, the elastic part 763 is elastically recovered, so that the first electrical connection part 73f returns from the third position to the fourth position.

[0214] 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 is elastically deformed 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.

[0215] 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.

[0216] The first electrical connection part 73f at least partially overlaps with the first voltage control member 71f in the front-rear direction of the developing cartridge 10; 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.

[0217] 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.

[0218] 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.

[0219] 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.

[0220] 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.

[0221] 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 from the opening of the first accommodating portion 92f. The force receiving portion 93f is used 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 close to 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 used 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; specifically, the fourth conductive member is in abutment with the force applying portion 94f.

[0222] In the 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. Through the cooperation of the arc-shaped driving surface 7121 and the force receiving surface 931f, the driving is more smooth.

[0223] In the 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 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. Specifically, 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.

[0224] In combination with FIG. 20, when the developing cartridge 10 is not installed to the image forming apparatus P, the switch member 503 is in the open position of the non-conduction circuit. Referring to FIG. 21, when the developing cartridge 10 is installed to the image forming apparatus P, the swing rod 504 is acted on by the force applying portion 94 to make the switch member 503 move from the open position to the closed position, at this time, the detected device is not in conduction with the ground end K, and the voltage value detected by the detection unit is U1.

[0225] In combination with FIG. 22, when the developing cartridge 10 starts to be detected, the first driving portion 712 pushes the movable piece 9f to slide backward, and the force applying portion 94f of the movable piece 9f applies a force to the fourth conductive member 77f, so that the first electrical connection portion 73f moves from the fourth position to the third position backward, the first electrical connection portion 73f is in contact with the ground end K, at this time, the elastic portion 763 is stretched, and the voltage value detected by the detection unit is U2.

[0226] When the first driving part 712 no longer pushes the movable part 9f, the fourth conductive member 77f moves the first electric connection part 73f from the third position to the fourth position under the elastic restoring force of the elastic part 763, and the movable part 9f moves forward under the force of the fourth conductive member 77f, the first electric connection part 73f is disconnected from the ground terminal K, at this time, the voltage value detected by the detection unit is U1. The values of U1 and U2 are different, and the detection unit detects the change of the voltage signal. When the user needs to reset the detected device, the first voltage control member 71f only needs to be rotated to align the first surface and the second surface.

[0227] 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 member P311.

[0228] In some embodiments, at least two of the first conductive member 74f, the second conductive member 75f, the third conductive member 76f and the fourth conductive member 77f are integrally formed. When the first conductive member 74f, the second conductive member 75f, the third conductive member 76f and the fourth conductive member 77f are integrally formed, the conductive assembly can be a conductive wire, a conductive metal wire or a conductive resin, etc.

[0229] In some embodiments, at least one of the first conductive member 74f, the second conductive member 75f, the third conductive member 76f and the fourth conductive member 77f has a plurality of separately arranged conductive components.

[0230] In some embodiments, the conductive assembly supplies power received to at least one of the developing roller, the powder outlet knife and the powder feeding roller; that is, the conductive assembly is electrically connected to at least one of the developing roller, the powder outlet knife and the powder feeding roller.

[0231] In some embodiments, the conductive assembly is not electrically connected to at least one of the developing roller, the powder outlet knife and the powder feeding roller; the developing roller is electrically connected to the switch member 503 or the power supply part of the imaging device through an electric connection part independent of the conductive assembly. The electric connection part can be in electrical contact with the switch member 503 and not in contact with the conductive assembly.

[0232] Embodiment 6

[0233] Based on the inventive concept of the above embodiments, this embodiment continues to describe the structure of the developing cartridge.

[0234] As described above, the first connecting end 761 is configured to be electrically connected to the second conductive member 75, in the embodiment, the first connecting end 761 is configured to not extend along a straight line, as shown in FIG. 27, the first connecting end 761 comprises 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 electrically connected to the second conductive member 75, the second contact portion 7612 is configured to be electrically connected to the elastic portion 763, and the intermediate portion 7613 is configured to connect the first contact portion 7611 and the second contact portion 7612.

[0235] In the embodiment, at least the intermediate portion 7613 does not extend along a straight line, specifically, the intermediate portion 7613 comprises 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 arranging the plurality of corners, the intermediate portion 7613 can be more fitted to 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 beneficial to protect the intermediate portion 7613 from external force, pollution, etc., and also makes the developing cartridge 10 with the intermediate portion 7613 easier to be packaged, and the intermediate portion 7613 will not pierce the packaging member for packaging the developing cartridge 10.

[0236] Further, the extension direction of the first extension portion 76131, the extension direction of the second extension portion 76132 and the extension direction of the third extension portion 76133 are different, preferably, the extension direction of the first extension portion 76131, the extension direction of the second extension portion 76132 and the extension direction of the third extension portion 76133 are all different, as shown in FIG. 27, the first extension portion 76131 extends along the left-right direction, the second extension portion 76132 extends along the front-rear direction, and the third extension portion 76133 extends along the up-down direction, the different extension directions of the extension portions can make each extension portion be embedded into the gap of the developing cartridge 10, which is equivalent to that the intermediate portion 7613 is limited by the corresponding components of the developing cartridge 10, and the intermediate portion 7613 can be more stably installed.

[0237] Further, the powder outletting knife 25 comprises a knife holder 251 fixedly installed on the developing frame 11 and a knife blade 252 fixedly installed on the knife holder 251 and used to contact the outer surface of the developing roller 13 / developing layer 131. Generally, at least the knife holder 251 is made of metal, so that when the powder outletting knife 25 is used as the second conductive member 75, at least the knife holder 251 can be used to transmit electric power / electric signals between the first end portion 101 and the second end portion 102. When the knife blade 252 is also made of metal, either the knife holder 251 or the knife blade 252 can be used to transmit electric power / electric signals between the first end portion 101 and the second end portion 102.

[0238] In some embodiments, the knife holder 251 comprises a first portion 2511 and a second portion 2512 connected to each other, the knife blade 252 is fixedly installed on the second portion 2512, and the first portion 2511 and the second portion 2512 both extend along the left-right direction, but the thickness direction of the first portion 2511 is not parallel to the thickness direction of the second portion 2512, so that a bending portion 253 is formed between the first portion 2511 and the second portion 2512. Thus, the powder outletting knife 25 can abut against the developing frame 11 through the first portion 2511 and the second portion 2512, respectively, and finally the powder outletting knife 25 is stably installed on the developing frame 11.

[0239] In some embodiments, when viewed along the left-right direction, the bending portion 253 is located outside the projection range of the first driving force receiving member 12 (as shown in FIG. 34), which is conducive to reducing the influence of the bending portion 253 on the rotation of the first driving force receiving member 12.

[0240] In some embodiments, the powder outletting knife 25 further comprises a first mounting portion 254 and a second mounting portion 255 arranged on the knife holder 251, and the powder outletting knife 25 is mounted to the developing frame 11 through the first mounting portion 254 and the second mounting portion 255. The specific mounting manner can be clamping, bonding, screwing, etc. In the developing cartridge shown in FIG. 27A, the first mounting portion 254 and the second mounting portion 255 are both arranged as screw holes.

[0241] Preferably, along the left-right direction, the two mounting portions 255 are respectively located at the two end portions of the powder discharge blade 25, along the up-down direction (a 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.

[0242] A joint area S is formed between the second end portion 251b and the third end portion 252a, the joint area S is located on at least one of the blade 252 and the blade holder 251, 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.

[0243] In some embodiments, the mounting portion 253 simultaneously penetrates the blade 252 and the blade holder 251, so that the blade 252 can be further fixed.

[0244] 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.

[0245] In the 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, the first conductive member 74 is electrically connected with the powder discharge blade 25, and specifically, the first conductive member 74 is in contact with the blade holder 251.

[0246] As shown in FIG. 28, the first conductive member 74 can be in contact with the longitudinal end face 2513 of the powder discharge blade 25, or can be in contact with other positions of the powder discharge blade 25, for example, the first conductive member 74 is arranged between the blade holder 251 and the developing frame 11, at this time, the first conductive member 74 will be fixed with the blade holder 251 on the developing frame 11, that is, the first conductive member 74 does not need to be provided with a structure for fixing to the developing frame 11, and more specifically, the first conductive member 74 is arranged between the developing frame 11 and the second part 2512 of the blade holder.

[0247] In some embodiments, when the powder outletting knife 25 is fixed by screws, the first conductive member 74 can also be provided with screw holes, and a screw can be used to fix the powder outletting knife 25 and the first conductive member 74 to the developing frame 11 at the same time.

[0248] When the developing roller 13 is the second conductive member 75, the first conductive member 74 can be in contact with the developing layer longitudinal end face 1311 of the developing roller 13 or the developing roller shaft longitudinal end face 1321 of the developing roller 13.

[0249] When the powder feeding roller 15 is the second conductive member 75, preferably, the third conductive member 76 is in contact with the powder feeding roller shaft longitudinal end face 1521 of the powder feeding roller 15.

[0250] At the second end 102, the first connecting end 761 can be electrically connected with at least one of the powder outletting knife 25 and the powder feeding roller 15, for example, the first connecting end 761 is in electrical contact with the end face of the powder outletting knife 25 and the powder feeding roller shaft end face 1521 of the powder feeding roller 15.

[0251] Embodiment 7

[0252] The same components in this embodiment as in the above embodiments will be given the same numbers, and compared with the above embodiments, the first end cover 103 in this embodiment is further provided with a avoiding part 1034, specifically, the avoiding part 1034 can be formed as a groove or a through hole.

[0253] As shown in FIG. 29, along the left-right direction, the avoiding part 1034 penetrates through the first end cover 103, and at least a part of the first voltage control member 71 can be exposed outward through the avoiding part 1034, so that the user can observe the state of the first voltage control member 71 without disassembling the first end cover 103.

[0254] Along the left-right direction, the first driving force receiving member 12 / first force receiving part 121 has a first end face 1211, and the first driving part 712 has a second end face 7122, both of which face the same direction, for example, both face the left, and further, along the left-right direction, the first end face 1211 and the second end face 7122 are not flush, and the distance between them is not less than 13 mm, preferably 13 mm-17 mm.

[0255] Embodiment 8

[0256] As shown in FIG. 30, the developing frame 11 includes a bottom shell 11a and a face cover 11b arranged separately, the powder bin 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.

[0257] Generally, the bottom shell 11a and the face cover 11b are combined with each other by welding, and different from the prior art, the welding surface 11c formed between the bottom shell 11a and the face cover 11b in the present embodiment includes at least a first surface 11c1 and a second surface 11c2, and 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 disconnected, the bottom shell 11a and the face cover 11b are not easily separated from each other due to the support of the first surface 11c1 and the second surface 11c2 to the face cover 11b.

[0258] 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.

[0259] Accordingly, the welding surface 11c can further include more surfaces, and preferably, when the number of surfaces in the welding surface 11c is greater than two, at least two of the surfaces are neither in the same plane nor parallel to each other.

[0260] As shown in FIG. 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.

[0261] Since the bottom shell 11a and the face cover 11b are in contact with each other through the welding surface 11c, although the welding surface 11c shown in FIG. 30 is located on the bottom shell 11a, it should be understood that the welding surface 11c can also be located on the face cover 11b.

[0262] In some embodiments, the developing cartridge 10 further includes a detected member for interacting with a detection member in the image forming device P, and the image forming device P can obtain parameter information such as the model and service life of the developing cartridge 10 by counting the number of times of collision between the detected member and the detection member, the time interval, and the like.

[0263] In order to reduce the structural complexity of the first end portion 101, there are developing cartridges in which the detected member is arranged on the second end portion 102, and in such developing cartridges, the detected member needs to receive the driving force from the first force receiving portion 121 to work. 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 mode has the problems 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 driving force transmission is delayed.

[0264] As shown in FIG. 32, the developing cartridge in the present embodiment adopts a multi-gear meshing mode to transmit driving force, 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.

[0265] The driving force transmission assembly 6 comprises a driving member 61 and a transmission member 62 which are meshed with each other, wherein the driving member 61 is configured to receive the driving force from the first force receiving portion 121, and the transmission member 62 is configured to transmit the driving force from the first end portion 101 to the second end portion 102.

[0266] 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 which are coaxially arranged, the first-stage gear 611 is configured to receive the driving force from the first force receiving portion 121, and the second-stage gear is configured 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.

[0267] The transmission member 62 comprises a transmission head 621, a movement portion 622 and a transmission tail 623 which are all arranged as gears and are meshed with each other, wherein the transmission head 621 is meshed with the second-stage gear 612 and the movement portion 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 freedom of the transmission member 62 greater, 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 portion 622 only needs to ensure that the driving force can be transmitted from the first end portion 101 to the second end portion 102.

[0268] As shown in FIG. 32, the movement portion 622 is arranged as a plurality of gears which are meshed with each other, and the number thereof is set to be between 8-13, preferably, 12 gears which are meshed with each other.

[0269] 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 movement portion 622.

[0270] In some embodiments, the developing frame 11 is further provided with a mounting groove 116, and at least the movement portion 622 is arranged in the mounting groove 116, so that the plurality of gears in the movement portion 622 can be limited by the mounting groove 116 and cannot easily shake, that is, the movement trajectory of the movement portion 622 can be limited by the mounting groove 116.

[0271] In some embodiments, the developing cartridge 10 further comprises a cover plate 115 for covering the mounting groove 116, finally, at least one gear wheel in the movement part 622 can be covered by the cover plate 115, the risk of gear wheel falling off is reduced; as shown in FIG. 32, each gear wheel in the movement part 622 corresponds to a mounting column 117, so as to ensure that the gear wheel can be stably mounted and stably transmit driving force.

[0272] Preferably, in the front-rear direction, the plurality of gear wheels (the movement part 622) are located behind the powder outlet knife 25 / the first force receiving part 121, specifically, the first force receiving part 121 is located between the powder outlet knife 25 and the plurality of gear wheels (the movement part 622); on the one hand, it can reduce the influence of the plurality of gear wheels during transmission on the powder outlet knife 25, on the other hand, it can reduce the influence of the vibration generated when the first force receiving part 121 rotates on the plurality of gear wheels.

[0273] In some embodiments, as shown in FIG. 32, the plurality of gear wheels are arranged in a straight line, for example, when viewed along the up-down direction, the connecting line of the rotation centers of the plurality of gear wheels is a straight line, preferably, the connecting line of the rotation centers of the plurality of gear wheels is parallel to the left-right direction; further, when viewed along the first direction, the plurality of gear wheels overlap at least part of the second-stage gear wheel 612, so as to make full use of the space of the developing cartridge.

[0274] Embodiment 9

[0275] As shown in FIG. 33, the developing cartridge 10 further comprises a power receiving member 112, which is used to be in electrical contact with a power output member P5 in the image forming apparatus P, so as 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 receiving member 112 directly or indirectly transmits the power to the developing roller shaft 132, when the developing roller shaft 132 is not conductive, the power receiving member 11 can also directly or indirectly transmit the power to the developing layer 131.

[0276] As shown in FIG. 34, when viewed along the left-right direction, the power receiving member 112 is located outside the projection range of the first force receiving part 121, so as to reduce the influence of the vibration generated by the first force receiving part 121 on the electrical contact between the power receiving member 112 and the power output member.

[0277] Preferably, when viewed along the left-right direction, the part of the power receiving member 112 used to be in contact with the power output member is located outside the projection range of the first force receiving part 121.

[0278] Preferably, in the front-rear direction, the power receiving member 112 is farther away from the developing roller 13 than the first force receiving part 121, so as to reduce the possibility of the carbon powder flying out from the surface of the developing roller 13 adhering to the power receiving member 112.

[0279] As shown in FIG. 33, in the present embodiment, the bottom shell 11a and the face cover 11b can also be combined with each other in the front-rear direction, and the welding surface 11c will be perpendicular to the front-rear direction. As shown in FIG. 34, when viewed in the left-right direction, the welding surface 11c is still located outside the first force receiving portion 121.

[0280] Similarly, the developing cartridge 10 in the present embodiment is still provided with the pressure receiving member 17, as shown in FIG. 33, the pressure receiving member 17 includes the left forced pushing portion 17L and the right forced pushing portion 17R which are spaced apart from each other in the left-right direction, and at least one of the left forced pushing portion 17L and the right forced pushing portion 17R is not provided on the developing frame 11.

[0281] In some embodiments, the left forced pushing portion 17L is provided on the first end cover 103, and when the left forced pushing portion 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.

[0282] In some embodiments, the right forced pushing portion 17R is provided on the second end cover 104, and when the right forced pushing portion 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.

[0283] 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 member 17R can also be provided on the cover member 85, and when the right forced pushing portion 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.

[0284] In some embodiments, the developing cartridge 10 further includes a conductive support 117 connected to the developing frame 11, and the power receiving member 112 is provided on the conductive support 117, and the right forced pushing portion 17R can also be provided on the conductive support 11.

[0285] As shown in FIG. 35, the developing cartridge 10 further includes a first sealing member 114 and a second sealing member 113, wherein, in the left-right direction, the first sealing member 114 extends in the left-right direction and is used for sealing the side of the powder outlet blade 25 facing the developing frame 11, preventing carbon powder from leaking between the powder outlet blade 25 and the developing frame 25, and the second sealing member 113 is provided at both ends of the developing roller 13 and is used for sealing the developing roller 13, preventing carbon powder from leaking from both ends of the developing roller 13.

[0286] In the present embodiment, the first sealing member 114 and the second sealing member 113 are both provided as elastic members such as sponges, felt, etc., 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.

[0287] In some embodiments, the left and right ends of the developing cartridge 10 are each provided with a separation force receiving member 18, 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.

[0288] In some embodiments, one of the left and right ends of the developing cartridge 10 is provided with a separation force receiving member 18, 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 can be separated from the photosensitive drum 201, and the other end is still close to / contacts with the photosensitive drum 201.

[0289] When only the first end portion 101 is provided with the separation force receiving member 18, as shown in FIG. 36, before the separation force receiving member 18 receives the separation 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 shown in FIG. 37, when the separation force receiving member 18 receives the separation force, the developing roller 13 rotates along the direction r shown in FIG. 36, at the first end portion 101, the developing roller 13 and the photosensitive drum 201 are separated from each other, at the second end portion 102, the developing roller 13 and the photosensitive drum 201 are still close to / contacts with each other, along the left-to-right direction, 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 portion 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 portion 101, the developing roller 13 and the photosensitive drum 201 are close to / contacts with each other, at the second end portion 102, the developing roller 13 and the photosensitive drum 201 are separated from each other, along the left-to-right direction, the distance between the rotation axis L1 of the developing roller 13 and the rotation axis L2 of the photosensitive drum 201 gradually increases.

[0290] It can be seen that when only one separation force receiving member 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 along the left-right direction, which is beneficial to simplify the structure of the developing cartridge 10, and the above-mentioned embodiments can be combined with each other, which also belongs to the protection scope of the present application.

[0291] Embodiment 10

[0292] As shown in FIGS. 38-40, the developing roller 13 and the stirring member 16 are arranged along the front-rear direction, the developing roller 13 is located in front of the stirring member 16, the direction intersecting with the front-rear direction is the left-right direction, the rotation axis of the developing roller 13 is parallel to the left-right direction, and preferably, the front-rear direction and the left-right direction are orthogonal.

[0293] As shown in FIGS. 40 and 41, the first force receiving portion 122 is farther away from the developing frame 11 than the second gear portion 124 in the left-right direction, and the first drive force receiving member 12 is located at the first end portion 101 of the developing cartridge 10 in the left-right direction.

[0294] As shown in FIGS. 40 and 41, the developing cartridge 10 further includes a drive force transmission member 64 for receiving a drive force from the first drive force receiving member 12, the drive force transmission member 64 being located at the first end portion 101 of the developing cartridge 10, and in some embodiments, the drive force transmission member 64 is configured to intermesh with the second gear portion 124 to receive the drive force.

[0295] As described above, the detected device 70 includes the electrically conductive assembly 72 and the first voltage control member 71, the electrically conductive assembly 72 includes the first electrically conductive member 74, the second electrically conductive member 75, the third electrically conductive member 76 and the fourth electrically conductive member 77, the first electrically conductive member 74, the second electrically conductive member 75, the third electrically conductive member 76 and the fourth electrically conductive member 77 can be electrically connected in sequence, and the first electrically conductive member 74, the second electrically conductive member 75, the third electrically conductive member 76 and the fourth electrically conductive member 77 can be separately arranged or integrally formed.

[0296] In this embodiment, the second electrically conductive member 75 is provided as the powder outlet blade 25, and the fourth electrically conductive member 77 and the third electrically conductive member 76 have a spacing therebetween in the front-rear direction, in other words, the fourth electrically conductive member 77 and the third electrically conductive member 76 are not directly connected therebetween, and the fourth electrically conductive member 77 and the third electrically conductive member 76 can be switched between an electrically connected state and a non-electrically connected state, and the fourth electrically conductive member 77 and the third electrically conductive member 76 can be electrically conductive wires, electrically conductive sheets or electrically conductive resins, and are preferably electrically conductive wires.

[0297] The driving force transmission member 64 has a hollow portion 641 for mounting a first voltage control member 71, the first voltage control member 71 is provided with at least one control portion for controlling whether the fourth conductive member 77 and the third conductive member 76 form an electrical connection, which can be regarded as the above-mentioned first driving portion 712, in the embodiment, the control portion includes alternatingly arranged conductive portions 331 and non-conductive portions 334, when the fourth conductive member 77 and the third conductive member 76 are in contact with the conductive portions 331 at the same time, the fourth conductive member 77 and the third conductive member 76 are electrically connected with each other; the first voltage control member 71 further includes a first driving force receiving portion 711, the conductive portions 331 and the first driving force receiving portion 711 are respectively arranged at different positions of the first voltage control member 71, the hollow portion 641 has a first matched portion 642 for cooperating with the first driving force receiving portion 711, through the interaction between the first driving force receiving portion 711 and the first matched portion 642, the first voltage control member 71 can move unidirectionally in the left-right direction, in the embodiment, the first voltage control member 71 moves in the direction away from the shell body 10.

[0298] In some embodiments, the power cut-off mechanism is a threaded structure between the first driving force receiving portion 711 and the first matched portion 642, for example, the first driving force receiving portion 711 is arranged as an external thread, and the first matched portion 642 is arranged as an internal thread.

[0299] As shown in FIGS. 41 and 42, the first voltage control member 71 further includes a limited portion 333 for limiting the rotation of the first voltage control member 71, the first end cover 103 is provided with a limiting portion 241 cooperating with the limited portion 333, through the mutual cooperation between the limited portion 333 and the limiting portion 241, the first voltage control member 71 cannot rotate together with the driving force transmission member 64; in some embodiments, the limited portion 333 is arranged as a protruding portion protruding from the surface of the first voltage control member 71 in the direction away from the first voltage control member 71, and the limiting portion 241 is arranged as a groove for cooperating with the protruding portion.

[0300] The first voltage control member 71 has a first position and a second position. In the first position, the fourth conductive member 77 and the third conductive member 76 are in contact with the conductive part 331 of the first voltage control member 71 at the same time, and the fourth conductive member 77 and the third conductive member 76 are in an electrically connected state. In the second position, the fourth conductive member 77 and the third conductive member 76 are not in contact with the conductive part 331 of the first voltage control member 71, and the fourth conductive member 77 and the third conductive member 76 are in contact with the non-conductive part 334 of the first voltage control member 71 at the same time, and the fourth conductive member 77 and the third conductive member 76 are in an electrically disconnected state. The conductive part 331 and the non-conductive part 334 are arranged alternately along the movement direction of the first voltage control member 71.

[0301] In this embodiment, the first voltage control member 71 can move from the second position to the first position through the thread cooperation between the first driving force receiving part 711 and the first cooperating part 642. When the first driving force receiving part 711 and the first cooperating part 642 are disengaged, the rotation of the first voltage control member 71 is cut off, and the first voltage control member 71 cannot move any more.

[0302] In this embodiment, before the first voltage control member 71 moves, the fourth conductive member 77 and the third conductive member 76 can be in an electrically connected state or an electrically disconnected state. As long as the fourth conductive member 77 and the third conductive member 76 can be in contact with the conductive part 331 at the same time during the one-way movement of the first voltage control member 71 in the left-right direction, the fourth conductive member 77 and the third conductive member 76 can be in a conductive state. In addition, after the transmission of the driving force is cut off by the force cutting mechanism, the fourth conductive member 77 and the third conductive member 76 can be in an electrically connected state or an electrically disconnected state.

[0303] According to the above description, the first driving part 712 can be regarded as an embodiment of the control part.

[0304] Embodiment 11

[0305] This embodiment focuses on the differences from Embodiment 10.

[0306] As shown in FIGS. 43 and 44, in this embodiment, the driving force transmission member 64 no longer has the hollow part 641. The developing cartridge 10 further comprises a transmission gear 143 coaxially arranged with the driving force transmission member 64. The diameter of the transmission gear 143 is smaller than that of the driving force transmission member 64. The transmission gear 143 is used to engage with the first driving force receiving part 711, so that the first voltage control member 71 is driven to rotate.

[0307] Continuing as shown in FIG. 43 and FIG. 44, in the left-right direction, the first voltage control member 71 has opposite first control surface 41 and second control surface 42, the first control surface 41 faces away from the developing frame 11, the second control surface 42 faces the developing frame 11, the contact end 771 of the fourth conductive member 77 is pressed against the second control surface 42, the third conductive member 76 is pressed against the first control surface 41, in other words, the fourth conductive member 77 and the third conductive member 76 are pressed against the two sides of the first voltage control member 71 respectively; in the circumferential direction of the first voltage control member 71, during the rotation of the first voltage control member 71, the part of the first voltage control member 71 opposite to at least one of the third conductive member 76 and the fourth conductive member 77 is made of non-conductive material.

[0308] The first voltage control member 71 is provided with at least one first through hole 43 which penetrates in the left-right direction, the fourth conductive member 77 and the third conductive member 76 can be electrically connected / conducted by contacting through the first through hole 43, when the first voltage control member 71 is in the first position, the fourth conductive member 77 and the third conductive member 76 can contact through the first through hole 43, at this time, the fourth conductive member 77 and the third conductive member 76 are in an electrically connected state; when the first voltage control member 71 is in the second position, the fourth conductive member 77 and the third conductive member 76 are separated by the first voltage control member 71 and cannot be electrically connected through the first through hole 43, at this time, the fourth conductive member 77 and the third conductive member 76 are in a non-electrically connected state.

[0309] The number of first through holes 43 in the first voltage control member 71 can be increased according to the detection needs of the developing cartridge 10.

[0310] When the fourth conductive member 77 and the third conductive member 76 are in an electrically connected state, at least a part of the fourth conductive member 77 and at least a part of the third conductive member 76 overlap each other as viewed in the left-right direction; when the fourth conductive member 77 and the third conductive member 76 are in a non-electrically connected state, at least a part of the fourth conductive member 77 and at least a part of the third conductive member 76 can overlap each other or can not overlap as viewed in the left-right direction, in some preferred embodiments, at least a part of the fourth conductive member 77 and at least a part of the third conductive member 76 overlap each other as viewed in the left-right direction, in this way, when the fourth conductive member 77 and the third conductive member 76 are converted from a non-electrically connected state to an electrically connected state, the fourth conductive member 77 and the third conductive member 76 can quickly form an electrical connection.

[0311] In some embodiments, the first voltage control member 71 is further provided with a toothless portion 44, which is a power cut-off mechanism. When the first voltage control member 71 rotates to the position where the toothless portion 44 is opposite to the transmission gear 143, the rotation of the first voltage control member 71 is cut off, and at this time, the transmission of the driving force is cut off.

[0312] As shown in FIGS. 45 and 46, in some embodiments, the developing cartridge 10 is further provided with another power cut-off mechanism. The first voltage control member 71 is not provided with a toothless portion 44. The first voltage control member 71 is provided with at least one first matching portion 45 on the first control surface 41. The first end cover 103 is provided with at least one second matched portion 242. Through the mutual cooperation between the first matching portion 45 and the second matched portion 242, the rotation of the first voltage control member 71 is cut off. For example, the first matching portion 45 is provided as a protrusion extending away from the developing frame 11. The second matched portion 242 is provided as a groove / second through hole for accommodating the protrusion.

[0313] In addition, in the left-right direction, the developing cartridge 10 is further provided with an elastic member for urging the first voltage control member 71 away from the developing frame 11. When the first voltage control member 71 rotates to the position where the protrusion can engage with the groove / second through hole, the first voltage control member 71 moves along the urging direction of the elastic member under the action of the elastic force. The first voltage control member 71 disengages from the transmission gear 143, thereby achieving the cut-off of the power transmission. The elastic member can be arranged between the first voltage control member 71 and the developing frame 11 or between the first voltage control member 71 and the first end cover 103.

[0314] In some embodiments, the first voltage control member 71 is provided with two protrusions on the first control surface 41. At least one of the size and shape of the two protrusions is different, and the two protrusions are arranged in a radially asymmetric manner. This can not only avoid the rotation of the first voltage control member 71 being cut off too early in the detection process, but also can maximize the rotation range of the first voltage control member 71.

[0315] Continuing as shown in FIGS. 45 and 46, in some embodiments, the power cut-off mechanism in the developing cartridge 10 is a magnetic force mechanism. Specifically, the first voltage control member 71 is provided with at least one magnetic member 46. The first end cover 103 is also provided with at least one magnetic member 46. Through the magnetic force action between the two magnetic members 46, the first voltage control member 71 moves along the direction of approaching / away from the developing frame 11. This can also achieve the purpose of the first voltage control member 71 disengaging from the transmission gear 143 to cut off the transmission.

[0316] In some embodiments, the first voltage control member 71 can also not be provided with the first through hole 43, but the area where the first through hole 43 is provided is made of a conductive material to form a conductive area, so that when the fourth conductive member 77 and the third conductive member 76 press the conductive area, the fourth conductive member 77 and the third conductive member 76 can form an electrical connection to realize conduction, so that the technical effects achieved by the embodiment can also be achieved.

[0317] Embodiment 12

[0318] The differences between the embodiments 10 and 12 are mainly described in this embodiment.

[0319] As shown in FIG. 47, in this embodiment, the first voltage control member 71 is made of a conductive material, and the first voltage control member 71 is also provided with at least one first through hole 43, and the contact end 771 of the fourth conductive member 77 abuts against the second control surface 42 of the first voltage control member 71; the first voltage control member 71 further includes a support portion 47 for supporting at least a portion of the third conductive member 76, or in other words, at least a portion of the third conductive member 76 is sleeved on the support portion 47; when the first voltage control member 71 is located at the first position, the contact end 771 cannot pass through / penetrate the first through hole 43, but abuts against the second control surface 42, and the fourth conductive member 77 and the third conductive member 76 can realize electrical connection through the first voltage control member 71, at this time, the fourth conductive member 77 and the third conductive member 76 are in an electrical connection state; when the first voltage control member 71 is located at the second position, the contact end 771 passes through / penetrates the first through hole 43, and the fourth conductive member 77 and the third conductive member 76 cannot form an electrical connection, at this time, the fourth conductive member 77 and the third conductive member 76 are in a non-electrical connection state.

[0320] In some embodiments, the third conductive member 76 is provided with a contact end abutting against the first control surface 41, and the support portion 47 is used to support a portion of the fourth conductive member 77, when the first voltage control member 71 is located at the first position, the contact end of the third conductive member 76 cannot pass through / penetrate the first through hole 43, but abuts against the first control surface 41, and the fourth conductive member 77 and the third conductive member 76 can realize electrical connection through the first voltage control member 71, at this time, the fourth conductive member 77 and the third conductive member 76 are in an electrical connection state; when the first voltage control member 71 is located at the second position, the contact end of the third conductive member 76 passes through / penetrates the first through hole 43, and the fourth conductive member 77 and the third conductive member 76 cannot form an electrical connection, at this time, the fourth conductive member 77 and the third conductive member 76 are in a non-electrical connection state.

[0321] In some embodiments, the first voltage control member 71 does not provide the support portion 47, as long as the fourth conductive member 77 and the third conductive member 76 are in contact with the first voltage control member 71 when the fourth conductive member 77 and the third conductive member 76 are in the electrically connected state, for example, the fourth conductive member 77 and the third conductive member 76 are in contact with the first control surface 41 and / or the second control surface 42 at the same time, and at least one of the fourth conductive member 77 and the third conductive member 76 is not in contact with the first voltage control member 71 when the fourth conductive member 77 and the third conductive member 76 are in the non-electrically connected state, for example, at least one of the fourth conductive member 77 and the third conductive member 76 passes through the first through hole 43.

[0322] In some embodiments, the region where the first through hole 43 is provided in the first voltage control member 71 is made of a non-conductive material to form a non-conductive region, so that the fourth conductive member 77 and the third conductive member 76 cannot form an electrical connection when pressing the non-conductive region, thus achieving the technical effects intended by the present embodiment.

[0323] In the present embodiment, the power required for the rotation of the first voltage control member 71 after the imaging device detects the completion can be cut off by any one of the power cut-off mechanisms described above.

[0324] Embodiment 13

[0325] The present embodiment focuses on the differences from Embodiment 10, Embodiment 11 and Embodiment 12.

[0326] As shown in FIGS. 48 and 49, the first voltage control member 71 further includes at least one third conductive member 48 installed on the second control surface 42, and the contact end 771 of the fourth conductive member 77 and the third conductive member 76 are both pressed against the second control surface 42. In the rotation direction of the first voltage control member 71, the interval distance between the contact points where the fourth conductive member 77 and the third conductive member 76 are in contact with the third conductive member 48 is less than or equal to the maximum size of the third conductive member 48, so as to ensure that the fourth conductive member 77 and the third conductive member 76 can be turned on within the area of the third conductive member 48.

[0327] When the first voltage control member 71 is located at the first position, the fourth conductive member 77 and the third conductive member 76 are in abutment with the third conductive member 48 at the same time, an electrical connection is formed between the fourth conductive member 77 and the third conductive member 76, at this time, the fourth conductive member 77 and the third conductive member 76 are in an electrical connection state; when the first voltage control member 71 is located at the second position, the fourth conductive member 77 and the third conductive member 76 are in abutment with the second control surface 42 of the first voltage control member 71, or in other words, the fourth conductive member 77 and the third conductive member 76 cannot be in abutment with the third conductive member 48 at the same time, and an electrical connection cannot be formed between the fourth conductive member 77 and the third conductive member 76, at this time, the fourth conductive member 77 and the third conductive member 76 are in a non-electrical connection state.

[0328] In some embodiments, the third conductive member 48 is arranged on the first control surface 41, and the contact end 771 of the fourth conductive member 77 and the third conductive member 76 are both pressed on the first control surface 41.

[0329] In the embodiment, when the imaging device detects completion, the power required for the rotation of the first voltage control member 71 can be cut off by any one of the power cut-off mechanisms described above.

[0330] As shown in FIG. 39 and FIG. 50, the developing cartridge 10 further comprises a powder feeding roller 15 rotatably arranged in the developing frame 11, the powder feeding roller 15 being used to supply the developer / carbon powder to the developing roller 13, in the front-rear direction, the powder feeding roller 15 is located behind the developing roller 13, and the powder feeding roller 15 is located in front of the stirring member 16; the developing cartridge 10 is provided with a first conductive member 74 at the second end 102, one end of the first conductive member 74 being used to be electrically connected with the imaging device to receive power, and the other end of the first conductive member 74 being electrically connected with the powder outlet blade 25, the electrical connection between the powder outlet blade 25 and the powder feeding roller 15 is realized by arranging an intermediate conductive member 80, preferably, the intermediate conductive member 80 is a conductive wire.

[0331] The powder outlet blade 25 comprises a blade holder 251 and a blade 252 mounted on the blade holder 251, the blade holder 251 is mounted on the developing frame 11, and the blade 252 is used to control the thickness of the developer; the developing cartridge 10 further comprises a buffer member 353 for preventing carbon powder leakage, in the front-rear direction, the buffer member 253 is located between the developing frame 11 and the powder outlet blade 25, one end of the intermediate conductive member 80 is located between the blade holder 251 and the buffer member 353, and the other end of the intermediate conductive member 80 is connected with the powder feeding roller shaft 152, specifically, the other end of the intermediate conductive member 80 is wound around one end of the powder feeding roller shaft 152.

[0332] Embodiment 14

[0333] In the present embodiment, as shown in FIGS. 51 and 52, at least a portion of the first conductive member 74 is disposed at the second end portion 102 of the developing cartridge 10, the first conductive member 74 includes a power receiving end 741 and a power output end 742 electrically connected to each other, the power receiving end 741 is capable of receiving power from the image forming apparatus P, the power output end 742 is used to directly or indirectly deliver power to other components of the developing cartridge 10, such as the developing roller 13, the powder outlet blade 25, etc.; in some embodiments, at least a portion of the power receiving end 741 is supported by the second end cover 104, as shown in FIG. 53A, along the direction from left to right, the farthest end of the first conductive member 74 / power receiving end 741 exceeds the farthest end of the second end cover 104, in other words, along the direction from left to right, the farthest end of the first conductive member 74 / power receiving end 741 protrudes beyond the farthest end of the second end cover 104.

[0334] In some embodiments, the second end cover 104 is formed in two parts, the second end cover 104 includes a first support portion and a second support portion combined with each other, the first support portion is used to at least support the developing roller 13 / developing roller shaft 132, the second support portion is used to at least support the power receiving end 741.

[0335] As shown in FIGS. 51, 53B, 54 and 55, the first end cover 103 includes an end cover body 103a, a neck portion 103b, a first protruding portion 103c and a second protruding portion 103d, the neck portion 103b is formed by extending from the end cover body 103a towards the direction away from the developing frame 11, the neck portion 103b is used to wrap / cover a portion of the first power receiving portion 121, in the direction intersecting with the left-right direction, the power receiving end 741 has a maximum dimension d1, the maximum dimension d1 of the power receiving end 741 is greater than or equal to the maximum dimension d2 of the neck portion 103b in the front-rear direction.

[0336] In some embodiments, the maximum dimension d1 is the maximum dimension of the power receiving end 741 in the front-rear direction perpendicular to the left-right direction.

[0337] The first protruding portion 103c and the second protruding portion 103d are both formed by extending from the end cover body 103a towards the direction close to the developing frame 11, at least a portion of the first protruding portion 103c covers a portion of the first gear portion 123, at least a portion of the second protruding portion 103d covers another portion of the first gear portion 123, in the left-right direction, the first protruding portion 103c is located in front of the second protruding portion 103d, along the front-rear direction, the maximum dimension d3 between the front end of the first protruding portion 103c and the rear end of the second protruding portion 103d is less than or equal to the maximum dimension d1 of the power receiving end 741.

[0338] The maximum size d1 of the power receiving end 741 is greater than or equal to the maximum size d4 of the first gear portion 123 in the front-rear direction.

[0339] In the present embodiment, the first connecting end 761 of the third conductive member 76 is connected with the powder outletting blade 25, and the developing cartridge 10 further comprises a conducting portion 331 for electrically connecting the third conductive member 76 and the fourth conductive member 77. In some embodiments, at least a portion of the conducting portion 331 is supported by the first voltage control member 71, in other words, the conducting portion 331 is mounted on the first voltage control member 71.

[0340] When the second connecting end 762 of the third conductive member 76 is in electrical contact / electrically connected with the conducting portion 331, and the contact end 771 of the fourth conductive member 77 is also in electrical contact / electrically connected with the conducting portion 331, the fourth conductive member 77 and the third conductive member 76 are in the electrically connected state; when the second connecting end 762 of the third conductive member 76 and / or the contact end 771 of the fourth conductive member 77 is out of electrical contact / electrically connected with the conducting portion 331, the fourth conductive member 77 and the third conductive member 76 are in the non-electrically connected state.

[0341] As shown in FIGS. 54 and 55, in the left-right direction, the developing cartridge 10 further comprises a second elastic member 61 supported by at least one of the first voltage control member 71 and the developing frame 11. Under the elastic force of the second elastic member 61, the first voltage control member 71 can move towards the direction away from the developing frame 11. The second elastic member 61 can be an elastic member such as a compression spring, a tension spring, rubber, sponge, etc. When the second elastic member 61 is a compression spring, the second elastic member 61 is located between the first voltage control member 71 and the developing frame 11.

[0342] Under the elastic force of the second elastic member 61, the first voltage control member 71 moves towards the direction away from the developing frame 11, and further causes the first voltage control member 71 to disengage from the driving force transmission member 64 / transmission gear 143. The driving force of the first voltage control member 71 is cut off, and the first voltage control member 71 is stationary relative to the developing frame 11.

[0343] The developing cartridge 10 further comprises a trigger portion capable of being converted between a first state and a second state. In the first state, the third conductive member 76 and the fourth conductive member 77 can be converted between the electrically connected state and the non-electrically connected state. In the second state, the third conductive member 76 and the fourth conductive member 77 are in the non-electrically connected state. During the rotation of the first voltage control member 71, the trigger portion can be converted from the first state to the second state. When the developing cartridge 10 is detected to be complete, the trigger portion reaches the second state. In the present embodiment, when the trigger portion is in the second state, the driving force of the first voltage control member 71 is cut off.

[0344] The first voltage control member 71 comprises at least one second matching portion 713, and the first end cover 103 is provided with at least one third matched portion 103g matched with the second matching portion 713, the second matching portion 713 and the third matched portion 103g can interact / interact with each other, so that the state that the first voltage control member 71 is stationary relative to the developing frame 11 is maintained; in the embodiment, the trigger portion is the second matching portion 713, in the first state, the second matching portion 713 does not match with the third matched portion 103g, the third conductive member 76 and the fourth conductive member 77 can be switched between the electrically connected state and the non-electrically connected state, with the rotation of the first voltage control member 71, the second matching portion 713 is switched from the first state to the second state, when the detection is completed, the second matching portion 713 reaches the second state, in the second state, the second matching portion 713 is triggered, the second matching portion 713 and the third matched portion 103g interact with each other, the driving force of the first voltage control member 71 is cut off, and the third conductive member 76 and the fourth conductive member 77 are in the non-electrically connected state.

[0345] In some embodiments, in the first state, the second matching portion 713 abuts against the first end cover 103, the first voltage control member 71 cannot move towards the direction away from the developing frame 11, in the second state, under the elastic force of the second elastic member 61, the first voltage control member 71 moves towards the direction away from the developing frame 11, and the second matching portion 713 can enter the third matched portion 103g which is provided as a through hole / slot.

[0346] In some embodiments, the interaction / interaction between the second matching portion 713 and the third matched portion 103g can also be snap or clamping.

[0347] In some embodiments, the first voltage control member 71 further comprises a control body 714, the radial maximum dimension of the second body portion 710 is greater than the radial maximum dimension of the control body 714, at least a part of the control body 714 is farther away from the developing frame 11 in the left-right direction compared with the second body portion 710, or in other words, the control body 714 protrudes out of the second body portion 710 in the left-right direction; the second matching portion 713 can be provided on the control body 714.

[0348] In some embodiments, the second engaging portion 713 is configured as a protrusion formed towards a direction away from the developing frame 11, or a through hole, or an opening facing a recess of the developing frame 11, and the third engaged portion 103g is configured as a through hole, or an opening facing a recess of the developing frame 11, or a protrusion formed towards a direction close to the developing frame 11, at least a part of the protrusion is capable of entering the through hole or the recess, so as to realize the interaction / mutual cooperation between the second engaging portion 713 and the third engaged portion 103g.

[0349] In some embodiments, when the first voltage control member 71 is provided with a plurality of second engaging portions 713, the shapes and sizes of different second engaging portions 713 are different from each other, and correspondingly, the shapes and sizes of the third engaged portions 103g are also different from each other.

[0350] In the present embodiment, the fourth conductive member 77 and the third conductive member 76 are configured to form an intermittent electrical connection, specifically, only when the fourth conductive member 77 and the third conductive member 76 are both electrically connected / in electrical contact with the conductive portion 331, the fourth conductive member 77 and the third conductive member 76 are in an electrical connection state, and when at least one of the fourth conductive member 77 and the third conductive member 76 is not electrically connected / in electrical contact with the conductive portion 331, the fourth conductive member 77 and the third conductive member 76 are not in an electrical connection state, in a detection cycle, the third conductive member 76, the fourth conductive member 77 and the conductive portion 331 are in electrical connection / electrical contact at times and are disconnected / out of contact at times, the number of times of electrical connection / electrical contact and the number of times of disconnection / out of contact can be set according to the detection requirements of the image forming apparatus, so that the intermittent electrical connection is formed between the third conductive member 76 and the fourth conductive member 77.

[0351] When the first voltage control member 71 rotates, the power cut-off mechanism is the second engaging portion 713, the third engaged portion 103g and the second elastic member 61, specifically, when the first voltage control member 71 moves towards a direction away from the developing frame 11 under the elastic force of the second elastic member 61, the first voltage control member 71 is disengaged from the driving force transmission member 64 / transmission gear 143, the driving force of the first voltage control member 71 is cut off, the first voltage control member 71 is stationary relative to the developing frame 11, and through the interaction / mutual cooperation between the second engaging portion 713 and the third engaged portion 103g, the stationary state of the first voltage control member 71 relative to the developing frame 11 is maintained.

[0352] The first voltage control member 71 is configured to receive the driving force from the first driving force receiving member 12 and rotate, in some embodiments, the first voltage control member 71 is engaged with the driving force transmission member 64 / transmission gear 143 to receive the driving force, in other embodiments, the first voltage control member 71 can also be engaged with other components for transmitting the driving force, which are different from the driving force transmission member 64 in the shaft.

[0353] Embodiment 15

[0354] This embodiment is focused on the differences from Embodiment 14.

[0355] As shown in FIG. 56, the first end cover 103 is provided with a bearing portion 103e for bearing the first voltage control member 71, the bearing portion 103e includes a bearing body 103e2 protruding from the side wall of the first end cover 103 facing the developing frame 11 in the direction close to the developing frame 11, the developing cartridge 10 further includes a first movable portion 103e1 movable relative to the bearing body 103e2 in the direction intersecting the left-right direction, the first movable portion 103e1 is connected with the first end cover 103 and / or the bearing body 103e2, and the first movable portion 103e1 is provided as an elastic arm.

[0356] In some embodiments, in the up-down direction, the first movable portion 103e1 is located below the bearing body 103e2.

[0357] As shown in FIG. 57, a second accommodating portion 714a is formed in the control body 714 of the first voltage control member 71, the second accommodating portion 714a is used to accommodate the first movable portion 103e1; in some embodiments, the first movable portion 103e1 and the second accommodating portion 714a can be exchanged.

[0358] As shown in FIGS. 57 and 58, in the embodiment, the first movable part 103e1 is a trigger part, when the first movable part 103e1 is in the first state, the first movable part 103e1 is not accommodated by the second accommodating part 714a, when the first movable part 103e1 is in the second state, the first movable part 103e1 is accommodated by the second accommodating part 714a, specifically, in the process that the first driving force receiving part 711 of the first voltage control member 71 and the transmission gear 143 are engaged with each other, when the first voltage control member 71 rotates to the position that the first movable part 103e1 and the second accommodating part 714a can cooperate with each other, under the action of the tangential force between the first driving force receiving part 711 and the transmission gear 143, the first voltage control member 71 moves upward until the first movable part 103e1 is accommodated by the second accommodating part 714a, the first movable part 103e1 reaches the second state, the first voltage control member 71 / the first driving force receiving part 711 and the driving force transmission member 64 / the transmission gear 143 are disengaged, the driving force of the first voltage control member 71 is cut off.

[0359] In the embodiment, when the first movable part 103e1 and the second accommodating part 714a interact with each other, the first driving force receiving part 711 and the driving force transmission member 64 / the transmission gear 143 are disengaged, the driving force of the first voltage control member 71 is cut off, the fourth conductive member 77 and the third conductive member 76 are in the non-electrically connected state, through the arrangement of the embodiment, the power transmission process of the developing cartridge 10 becomes simple, and the steps of the power transmission process are simplified.

[0360] Embodiment 16

[0361] The embodiment focuses on the differences between Embodiment 14 and Embodiment 15.

[0362] In the embodiment, as shown in FIGS. 59 and 60, the first voltage control member 71 is supported by the first end cover 103, and the rotation axis of the first voltage control member 71 is not parallel to the rotation axis of the developing roller 13, in some embodiments, the first voltage control member 71 is arranged as a bevel gear, and the transmission gear 143 is also arranged as a bevel gear, in some preferred embodiments, the rotation axis of the first voltage control member 71 is perpendicular to the rotation axis of the developing roller 13.

[0363] In the embodiment, the driving force of the first voltage control member 71 is cut off by the toothless part 44 of the first voltage control member 71, specifically, the toothless part is set as a trigger part, when the toothless part 44 is in the first state, the toothless part 44 is not opposite to the transmission gear 143, the first voltage control member 71 is engaged with the transmission gear 143 to receive the driving force from the first driving force receiving member 12, when the toothless part 44 is in the second state, the toothless part 44 is opposite to the transmission gear 143, the first voltage control member 71 is disengaged from the transmission gear 143, and the driving force of the first voltage control member 71 is cut off.

[0364] The structure of the developing cartridge 10 / developing frame 11 and the layout of the components at the first end portion 101 can be optimized by the arrangement of the embodiment, and meanwhile, the developing cartridge 10 arranged in this way is convenient to install.

[0365] Embodiment 17

[0366] The embodiment focuses on the differences of the embodiment 14, the embodiment 15 and the embodiment 16.

[0367] In the embodiment, as shown in FIG. 61, the first voltage control member 71 further comprises a first detection protrusion 715 and a second detection protrusion 716 which are arranged on the first control surface 41, the first detection protrusion 715 comprises a first touch end 715a, a second touch end 715b, and a first connecting end 715c, along the rotating direction R of the first voltage control member 71, the first connecting end 715c is between the first touch end 715a and the second touch end 715b, along the radial direction of the first voltage control member 71, the second touch end 715b is between the first touch end 715a and the first connecting end 715c, and in the radial direction of the first voltage control member 71, the first connecting end 715c is closer to the control body 714 than the second touch end 715b.

[0368] The second detection protrusion 716 comprises a fourth touch end 716a, a fifth touch end 716b, and a second connecting end 716c, along the rotating direction R of the first voltage control member 71, the second connecting end 716c is between the fourth touch end 716a and the fifth touch end 716b, along the radial direction of the first voltage control member 71, the fifth touch end 716b is between the fourth touch end 716a and the second connecting end 716c, and in the radial direction of the first voltage control member 71, the second connecting end 716c is closer to the control body 714 than the fifth touch end 716b.

[0369] In some embodiments, the first connecting end 715c and / or the second connecting end 716c can be connected with the control body 714.

[0370] Along the rotation direction R of the first voltage control member 71, the central angle of the arc formed between the first contact end 715a and the second contact end 715b is a first angle a, and the central angle of the arc formed between the first contact end 715a and the fifth contact end 716b is a second angle β, the first angle a is greater than or equal to the second angle β, in this way, the timing difference of the detection signal of the developing cartridge 10 can be ensured, and the detection signal overlap can be avoided, and the detection result can be affected.

[0371] Embodiment 18

[0372] This embodiment focuses on the differences between embodiments 14, 15, 16 and 17.

[0373] In this embodiment, as shown in FIGS. 62 and 63, the developing cartridge 10 further comprises a third elastic member 62 mounted on the control body 714, the third elastic member 62 forces the first voltage control member 71 to have a tendency to move towards the direction close to the developing frame 11; in the left-right direction, the third elastic member 62 abuts / contacts with the conducting part 331, the second connecting end 762 of the third conductive member 76 or the contact end 771 of the fourth conductive member 77 is always electrically connected with the conducting part 331 through the third elastic member 62, this embodiment takes the contact end 771 of the fourth conductive member 77 as an example to be electrically connected with the conducting part 331 through the third elastic member 62.

[0374] The third conductive member 76 or the fourth conductive member 77 can be formed integrally with the third elastic member 62 or separately.

[0375] As shown in FIGS. 64, 65 and 66, the second connecting end 762 of the third conductive member 76 or the contact end 771 of the fourth conductive member 77 is formed with a bending part 772, the bending part 772 has a second electrical connection part 772a, the second electrical connection part 772a can be electrically connected with the conducting part 331, so that the third conductive member 76 / the fourth conductive member 77 can be electrically connected with the conducting part 331, the first voltage control member 71 is provided with a first gap 717, when at least a part of the bending part 772 is located in the first gap 717, the fourth conductive member 77 and the third conductive member 76 are in a non-electrically connected state; when the second electrical connection part 772a of the bending part 772 is electrically connected with the conducting part 331, the fourth conductive member 77 and the third conductive member 76 are in an electrically connected state.

[0376] Under the elastic force of the third elastic member 62, the first voltage control member 71 is capable of moving towards the direction close to the developing frame 11, when the third elastic member 62 is set as a compression spring, in the left-right direction, the third elastic member 62 is capable of being pressed by the first end cover 103 at least.

[0377] In the embodiment, the trigger part is set as a first notch 717 arranged on the first voltage control member 71, the first end cover 103 is further provided with a third cooperation part 103h for cooperating with the first notch 717, the third cooperation part 103h is set as a protrusion, when the trigger part is in the first state, the third cooperation part 103h is not located in the first notch 717, the third cooperation part 103h is capable of abutting against the second control surface 42 of the first voltage control member 71 to limit the movement of the first voltage control member 71 towards the direction close to the developing frame 11, at this time, the third conductive member 76 and the fourth conductive member 77 are capable of converting between the electrically connected state and the non-electrically connected state with the rotation of the first voltage control member 71, when the second electric connection part 772a of the bending part 772 forms the electric connection / electric contact with the conducting part 331, the fourth conductive member 77 and the third conductive member 76 convert to the electrically connected state, when the second electric connection part 772a of the bending part 772 does not form the electric connection / electric contact with the conducting part 331, the fourth conductive member 77 and the third conductive member 76 convert to the non-electrically connected state, the first driving force receiving part 711 is always in the meshing state with the transmission gear 143.

[0378] When the trigger part is triggered and converted from the first state to the second state, the third cooperation part 103h is located in the first notch 717, the third cooperation part 103h no longer abuts against the second control surface 42, the first voltage control member 71 moves towards the direction close to the developing frame 11, the second electric connection part 772a of the bending part 772 and the first control surface 41 / conducting part 331 are spaced apart from each other in the left-right direction, the second electric connection part 772a is disconnected from the electric connection / electric contact with the conducting part 331, the fourth conductive member 77 and the third conductive member 76 convert to the non-electrically connected state, but the first driving force receiving part 711 is always in the meshing state with the transmission gear 143, that is, in the embodiment, when the trigger part is in the second state, the driving force of the first driving force receiving part 711 / first voltage control member 71 is not cut off, the first voltage control member 71 can still receive the driving force.

[0379] In the embodiment, the first driving force receiving part 711 of the first voltage control member 71 is always in the meshing state with the transmission gear 143, in the left-right direction, the distance of the movement of the first voltage control member 71 under the force of the third elastic member 62 is less than the maximum size of the transmission gear 143 in the left-right direction.

[0380] Embodiment 19

[0381] As described above, the developing cartridge 10 has a first end portion 101 and a second end portion 102 opposite to the first end portion 101 in the longitudinal direction (left-right direction) of the developing cartridge 10, and is provided with a first end cover 103 at the first end portion 101 and a second end cover 104 at the second end portion 102 (as shown in FIG. 79), the first end cover 103 being connected to the developing frame 11 to cover at least a portion of the first driving force receiving member 12 configured to receive a driving force capable of directly or indirectly driving the developing roller 13 and the powder feeding roller 15 to rotate from the image forming apparatus P.

[0382] In this embodiment, as shown in FIGS. 67 and 68, the first driving force receiving member 12 includes a first force receiving portion 121, a first main body portion 122, and a driving force output portion 125, the first force receiving portion 121 being provided on the first main body portion 122 for engaging with and receiving the driving force from the driving force output member of the image forming apparatus P, and the driving force output portion 125 being connected to the first main body portion 122 for transmitting the driving force therefrom, the maximum distance between the first force receiving portion 121 and the developing frame 11 being greater than the maximum distance between the driving force output portion 125 and the developing frame 11 in the left-right direction.

[0383] The driving force output portion 125 can be integrally formed with or movably connected to the first main body portion 122, and can be the first gear portion 123 or the second gear portion 124 in the above embodiments, the first gear portion 123 and the second gear portion 124 being regarded as the same gear portion when they have the same diameter, in which case the driving force output portion 125 is the gear portion.

[0384] As shown in FIGS. 68 and 69, only a part of the developing frame 11 is shown in FIG. 68, the developing frame 11 is provided with a gear support portion 11d for supporting the first driving force receiving member 12 / driving force output portion 125, the gear support portion 11d is provided with a first acting portion 11d1, the driving force output portion 125 is provided with a first acted portion 125a, the first acting portion 11d1 is used to interact with the first acted portion 125a, so that the first driving force receiving member 12 / driving force output portion 125 cannot be taken out together with the first end cover 103, or in other words, through the interaction of the first acting portion 11d1 and the first acted portion 125a, a force opposite to the dismounting direction of the first end cover 103 can be generated between the first driving force receiving member 12 / driving force output portion 125 and the gear support portion 11d, effectively avoiding the first driving force receiving member 12 / driving force output portion 125 from being taken out together with the first end cover 103, so as to simplify the dismounting process of the developing cartridge 10; the acting mode of the first acting portion 11d1 and the first acted portion 125a can be abutting or clamping.

[0385] In some embodiments, as shown in FIGS. 68 and 69, one of the first acting portion 11d1 and the first acted portion 125a is provided as a protrusion, and the other is provided as a groove for cooperating with the protrusion, the groove is used to accommodate at least a part of the protrusion.

[0386] In some embodiments, the protrusion and the groove are both discontinuously provided, or in other words, the protrusion and the groove are not continuously formed in the circumferential direction of the driving force output portion 125 / gear support portion 11d, so that the protrusion and the groove can be matched with each other, and the discontinuous parts of the protrusion and the groove can also be used to store lubricant, so that the rotation of the driving force output portion 125 is smoother.

[0387] In some embodiments, the first driving force receiving member 12 / driving force output portion 125 can also be pressed by other gears (for example: the driving force transmission member 64 or the transmission gear 143 in the above embodiment) located on the same side as the first driving force receiving member 12, specifically, the teeth of the gears engaged with the driving force output portion 125 and the teeth of the driving force output portion 125 interact to generate a force opposite to the dismounting direction of the first end cover 103, so as to achieve the purpose of preventing the first driving force receiving member 12 / driving force output portion 125 from being taken out together with the first end cover 103.

[0388] Embodiment 20

[0389] In the embodiment, the detected device 70 still comprises the conductive assembly 72 and the first voltage control member 71 supported by the first end cover 103; as shown in FIGS. 70 and 71, the first voltage control member 71 is provided with a first driving force receiving portion 711 for receiving the driving force from the first driving force receiving member 12, in some preferred embodiments, the first driving force receiving portion 711 is indirectly engaged with the driving force output portion 125, for example, the developing cartridge 10 is provided with coaxial driving force transmission member 64 and transmission gear 143, along the left-right direction, the transmission gear 143 is farther away from the developing frame 11 than the driving force transmission member 64, the diameter of the driving force transmission member 64 is greater than that of the transmission gear 143, the driving force transmission member 64 is engaged with the driving force output portion 125 to receive the driving force, and the transmission gear 143 is engaged with the first driving force receiving portion 711 to transmit the driving force to the first voltage control member 71, forcing the first voltage control member 71 to rotate, by such arrangement, the transmission ratio of the first voltage control member 71 can be adjusted, thereby reducing the rotation speed of the first voltage control member 71, making the detection process of the developing cartridge 10 more stable.

[0390] As described above, along the left-right direction, the first voltage control member 71 also has opposite first control surface 41 and second control surface 42, the first control surface 41 faces away from the developing frame 11, and the second control surface 42 faces the developing frame 11; in the embodiment, as shown in FIGS. 70, 71, 72, 73A and 73B, the first voltage control member 71 is also provided with a third control surface 49 between the first control surface 41 and the second control surface 42, the third control surface 49 faces the developing frame 11, along the left-right direction, the third control surface 49 is closer to the developing frame 11 than the first control surface 41, and along the left-right direction, the third control surface 49 is farther away from the developing frame 11 than the second control surface 42; further, along the left-right direction, the third control surface 49 is between the first control surface 41 and the first driving force receiving portion 711, and the third control surface 49 faces the first driving force receiving portion 711.

[0391] As shown in FIGS. 72, 73A, 73B and 74, the developing cartridge 10 further comprises a conductive conductive portion 331, when the second connecting end 762 of the third conductive member 76 and the contact end 771 of the fourth conductive member 77 are both in contact / pressed with the conductive portion 331, the third conductive member 76 and the fourth conductive member 77 are in an electrically connected state, when at least one of the second connecting end 762 of the third conductive member 76 and the contact end 771 of the fourth conductive member 77 is not in contact / pressed with the conductive portion 331, the third conductive member 76 and the fourth conductive member 77 are in a non-electrically connected state.

[0392] As shown in FIGS. 72 and 73A, the first voltage control member 71 is provided with a control body 714 protruding from the first control surface 41 toward a direction away from the developing frame 11, and the conducting portion 331 can be formed integrally with the first voltage control member 71 or separately from the first voltage control member 71. When the conducting portion 331 is formed separately from the first voltage control member 71, the conducting portion 331 is made of an electrically conductive material, as shown in FIGS. 72, 73A and 74, the conducting portion 331 has a mounting hole 331a through which the control body 714 can pass, so that the conducting portion 331 is supported by the control body 714, and in turn, the conducting portion 331 is fixedly mounted to the first voltage control member 71. Preferably, the conducting portion 331 is mounted to the first control surface 41 of the first voltage control member 71. Further, the mounting hole 331a can limit and fix the conducting portion 331 to avoid displacement of the conducting portion 331 during detection.

[0393] When the conducting portion 331 is formed integrally with the first voltage control member 71, the first control surface 41 is provided with an electrically conductive region made of an electrically conductive material, or the first voltage control member 71 is entirely made of an electrically conductive material. In this case, in the first voltage control member 71, the surface of the portion other than the electrically conductive region is sprayed / pasted with an insulating material. In order to simplify the manufacturing process, it is preferable to adopt the structure in which the conducting portion 331 is formed separately from the first voltage control member 71.

[0394] Regardless of whether the conducting portion 331 is formed integrally with the first voltage control member 71 or separately from the first voltage control member 71, it is preferable that the conducting portion 331 is always provided / installed on the first control surface 41, so as to avoid interference between the components during detection.

[0395] In the present embodiment, as shown in FIGS. 72, 73A, 75 and 76, the control body 714 of the first voltage control member 71 is provided with an engaging portion 714b having an engaging surface 714c provided as an inclined surface inclined with respect to the left-right direction, and the first end cover 103 is provided with an engaged portion 103j having an engaged surface 103i provided as an inclined surface. The engaging portion 714b can interact with the engaged portion 103j. During rotation of the first voltage control member 71, the engaging portion 714b and the engaged portion 103j abut against / press against each other, or the engaging surface 714c and the engaged surface 103i abut against / press against each other, so that the first voltage control member 71 moves toward the direction close to the developing frame 11.

[0396] As shown in FIGS. 75, 76 and 77, the first end cover 103 is provided with a first abutting portion 103k for limiting the movement of the first voltage control member 71 and a third cooperation portion 103h for abutting against the third control surface 49 to limit the movement of the first voltage control member 71 towards the direction of approaching the developing frame 11 during the detection of the developing cartridge 10, and the third cooperation portion 103h is opposite to the first control surface 41 after the detection of the developing cartridge 10 is completed, the third cooperation portion 103h is provided as a cantilever extending from the first end cover 103 towards the direction of approaching the developing frame 11, and the third cooperation portion 103h is formed with a barb 103h1, and by such a configuration, the third cooperation portion 103h is facilitated to abut against the third control surface 49.

[0397] The first abutting portion 103k is used for abutting against the first control surface 41, and the first abutting portion 103k is always opposite to the first control surface 41 during the detection of the developing cartridge 10 or after the detection of the developing cartridge 10 is completed, and the first abutting portion 103k prevents the movement of the first voltage control member 71 towards the direction of moving away from the developing frame 11, and thus the first voltage control member 71 is configured to be unidirectionally movable towards the direction of approaching the developing frame 11.

[0398] In some embodiments, as shown in FIGS. 75, 76 and 77, the barb 103h1 can also guide the movement of the first voltage control member 71.

[0399] In summary, in the present embodiment, the trigger portion is the third cooperation portion 103h, when the third cooperation portion 103h is in the first state, the third cooperation portion 103h / barb 103h1 abuts against the third control surface 49 to limit the movement of the first voltage control member 71 towards the direction of approaching the developing frame 11, and with the rotation of the first voltage control member 71, the third conductive member 76 and the fourth conductive member 77 can be switched between the electrically connected state and the non-electrically connected state, when the second connecting end 762 and the contact end 771 of the fourth conductive member 77 are both in electrical connection / electric contact with the conductive portion 331, the fourth conductive member 77 and the third conductive member 76 are in the electrically connected state, and when at least one of the second connecting end 762 and the contact end 771 of the fourth conductive member 77 is out of electrical connection / electric contact with the conductive portion 331, the fourth conductive member 77 and the third conductive member 76 are switched to the non-electrically connected state, and during the switching process, the first driving force receiving portion 711 and the transmission gear 143 are always in meshing state.

[0400] When the trigger portion 103h is transformed from the first state to the second state, as the first voltage control member 71 rotates, the abutting surface 714c and the abutted surface 103i abut / press each other, the first voltage control member 71 moves towards the direction close to the developing frame 11, the third matching portion 103h / barb 103h1 is disengaged from the third control surface 49, at least one of the second connecting end 762 and the contact end 771 of the fourth conductive member 77 is disengaged from the conductive portion 331, the fourth conductive member 77 and the third conductive member 76 are in the non-electrically connected state, but in the process, the first driving force receiving portion 711 and the transmission gear 143 are always in meshing state, that is, in the embodiment, when the trigger portion 103h is in the second state, the driving force of the first driving force receiving portion 711 / first voltage control member 71 is not cut off, and the first voltage control member 71 can still receive the driving force.

[0401] In the embodiment, as shown in FIGS. 70, 71 and 72, the first connecting end 761 of the third conductive member 76 is electrically connected with the powder outlet knife 25, the fourth conductive member 77 is electrically connected with the first electrical connection portion 73, and the third conductive member 76 and the fourth conductive member 77 are combined and arranged to be capable of being transformed between the electrically connected state and the non-electrically connected state, so as to realize the detection of the developing cartridge 10. In some embodiments, the third conductive member 76 and the fourth conductive member 77 can be arranged as conductive resin, conductive rubber, metal wire or metal sheet, etc. Preferably, the third conductive member 76 and the fourth conductive member 77 are arranged as two conductive torsion springs.

[0402] In some embodiments, the first electrical connection portion 73 is arranged as conductive rubber, and the conductive rubber abuts against the image forming apparatus P.

[0403] Embodiment 21

[0404] As described above, the developing cartridge 10 is detachably installed in the drum cartridge 20 provided with the photosensitive drum 201, and the drum cartridge 20 is detachably installed in the main assembly P1 of the image forming apparatus P; as shown in Figs. 6-8, the drum cartridge 20 includes a drum frame 202 provided with a mounting portion for mounting the developing cartridge 10, the photosensitive drum 201 rotatably installed on the drum frame 202, a pressing member capable of applying a pressing force to the developing cartridge 10 so that the developing roller 13 and the photosensitive drum 201 contact each other, a separation force transmission member 206 provided on the drum frame 202, the developing roller 13 for supplying toner to the photosensitive drum 201 and for moving in response to a force applied from a separation force applying member of the image forming apparatus P while transmitting a separation force to the developing cartridge 10, and a locking member 207 for locking the developing cartridge 10; the pressing member and the locking member 207 are both located at the rear of the drum frame 202 in the front-rear direction, and are both spaced apart from the photosensitive drum 201, and the mounting portion is located between the pressing member and the photosensitive drum 201.

[0405] In the present embodiment, as shown in Figs. 78, 79 and 80, the developing cartridge 10 is provided with a first separation force receiving member 18a at the first end portion 101 and a second separation force receiving member 18b at the second end portion 102, and the first and second separation force receiving members 18a and 18b are both for receiving a force from the separation force transmission member 206 / separation force applying member so that the developing roller 13 and the photosensitive drum 201 are separated from each other.

[0406] In the present embodiment, as shown in Fig. 79, the first conductive member 74 is provided at least partially at the second end portion 102 of the developing cartridge 10, and the first conductive member 74 is supported by the second end cover 104 and is for receiving electric power from the image forming apparatus P, and the second separation force receiving member 18b is integrally formed with the developing frame 11 at the second end portion 102, and the second separation force receiving member 18b is spaced apart from the second end cover 104 in the front-rear direction, which prevents the second separation force receiving member 18b from interfering with the first conductive member 74.

[0407] As described above, the developing cartridge 10 further includes a developing roller drive gear 133 coaxially provided with the developing roller 13, and the developing roller drive gear 133 is for receiving a driving force from the first driving force receiving member 12 or is for engaging with the driving force output portion 125 to receive a driving force to drive the developing roller 13 to rotate; the developing roller drive gear 133 is supported by the developing roller shaft 132.

[0408] As shown in FIGS. 78 and 80, the first separation force receiving member 18a is arranged on the developing roller driving gear 133, which includes a developing roller driving gear body 133a and an extension support part 133b formed from the developing roller driving gear body 133a and extending toward a direction away from the developing layer 131, the extension support part 133b being used to support the first separation member 18a.

[0409] The first separation force receiving member 18a includes a first separation force receiving part 18a1 for receiving the acting force from the separation force transmission member 206 / separation force applying member, at least a portion of the first separation force receiving part 18a1 being located within the projection range of the driving force output part 125 in the left-right direction.

[0410] As described before, the first end cover 103 includes an end cover body 103a and a neck part 103b formed from the end cover body 103a and extending toward a direction away from the developing frame 11, the neck part 103b being used to wrap / cover a portion of the first force receiving part 121; in the present embodiment, as shown in FIGS. 78 and 80, the neck part 103b has a mounting gap 103b1, along the circumferential direction of the neck part 103b, at least a portion of the first separation force receiving part 18a1 overlaps with the neck part 103b, that is, at least a portion of the first separation force receiving part 18a1 is located within the mounting gap 103b1, through such arrangement, the first separation force receiving part 18a1 is prevented from shaking.

[0411] When the first separation force receiving member 18a / first separation force receiving part 18a1 receives the separation force, the separation force is transmitted to the first driving force receiving member 12 / first end cover 103 through the first separation force receiving part 18a1, because the first driving force receiving member 12 is supported by the developing frame 11 and the first end cover 103 is connected with the developing frame 11, so the separation force can be transmitted to the developing frame 11 and force the developing frame 11 to move backward, the developing roller 13 moves backward along with the developing frame 11, the developing roller 13 and the photosensitive drum 201 are separated from each other, at this time, the pressing member of the drum cartridge 20 is elastically deformed; in some embodiments, after the first separation force receiving part 18a1 receives the separation force, the first separation force receiving member 18a can also transmit the separation force to the developing roller driving gear 133, and then the developing roller driving gear 133 drives the developing frame 11 to move backward, so as to achieve the effect of separating the developing roller 13 and the photosensitive drum 201 from each other;

[0412] When the first separation force receiving member 18a / first separation force receiving part 18a1 no longer receives the separation force, the pressing member releases the elastic force, forcing the developing frame 11 to move forward, the developing roller 13 moves forward along with the developing frame 11, and the developing roller 13 and the photosensitive drum 201 are in contact with each other again.

[0413] When the second separation force receiving member 18b receives the separation force, because the second separation force receiving member 18b is integrally formed with the developing frame 11, the separation force can be directly transmitted to the developing frame 11, and the developing frame 11 is forced to move backward, the developing roller 13 moves backward along with the developing frame 11, and the developing roller 13 and the photosensitive drum 201 are separated from each other, at this time, the pressing member of the drum cartridge 20 is elastically deformed;

[0414] When the second separation force receiving member 18b no longer receives the separation force, the pressing member releases the elastic force, and the developing frame 11 is forced to move forward, the developing roller 13 moves forward along with the developing frame 11, and the developing roller 13 and the photosensitive drum 201 are in contact with each other again.

[0415] In some embodiments, the developing cartridge 10 can also be provided with one of the first separation force receiving member 18a and the second separation force receiving member 18b, and the developing cartridge 10 separates the developing roller 13 and the photosensitive drum 22 from each other through the first separation force receiving member 18a or the second separation force receiving member 18b.

[0416] Embodiment 22

[0417] As described above, the developing cartridge 10 also includes a powder outlet knife 25 for adjusting the thickness of the carbon powder on the surface of the developing roller 13 / the surface of the developing layer 131, the powder outlet knife 25 includes a knife holder 251 and a knife blade 252, the knife holder 251 is fixedly installed on the developing frame 11, and the knife blade 252 is fixedly installed on the knife holder 251 and is used to contact the outer surface of the developing roller 13 / the developing layer 131. Generally, at least the knife holder 251 is made of metal, so that when the powder outlet knife 25 is used as the second conductive member 75, at least the knife holder 251 can be used to transmit power / electrical signals between the first end portion 101 and the second end portion 102, and when the knife blade 252 is also made of metal, either the knife holder 251 or the knife blade 252 can be used to transmit power / electrical signals between the first end portion 101 and the second end portion 102.

[0418] As shown in FIGS. 81 and 82, the knife holder 251 includes a first portion 2511 and a second portion 2512 connected to each other, the knife blade 252 is fixedly installed on the second portion 2512, and the first portion 2511 and the second portion 2512 both extend along the left-right direction, but the thickness direction of the first portion 2511 and the thickness direction of the second portion 2512 are not parallel, so that a bending portion 253 is formed between the first portion 2511 and the second portion 2512, which makes the powder outlet knife 25 abut against the developing frame 11 through the first portion 2511 and the second portion 2512 respectively, and finally the powder outlet knife 25 is stably installed on the developing frame 11.

[0419] Continuing as shown in FIGS. 81 and 82, the bending portion 253 is used to connect the first portion 2511 and the second portion 2512, the thickness direction of the first portion 2511 is parallel to the up-down direction, and the thickness direction of the second portion 2512 is parallel to the front-rear direction; as shown in FIG. 30, the developing frame 11 includes a bottom shell 11a and a face cover 11b arranged separately, and the powder tank 110 is located between the bottom shell 11a and the face cover 11b.

[0420] As shown in FIGS. 81 and 83, viewed along the left-right direction, the bending portion 253 is located outside the projection range of the first driving force receiving member 12 / driving force output portion 125, in other words, viewed along the left-right direction, the bending portion 253 does not overlap with the first driving force receiving member 12 / driving force output portion 125; in the up-down direction, the bending portion 253 is farther away from the developing housing 11 / bottom shell 11a than the first driving force receiving member 12 / driving force output portion 125. Through such arrangement, the distance between the knife holder 251 / bending portion 253 and the bottom shell 11a can be increased, which can effectively reduce the direct contact and friction between the bending portion 253 and the first driving force receiving member 12 during operation, while reducing the wear rate of the bending portion 253 and the first driving force receiving member 12, prolonging the service life of the developing cartridge 10.

[0421] As shown in FIG. 83, the central axis N of the first driving force receiving member 12 / driving force output portion 125 is not located within the rectangular range M formed by the first portion 2511 and the second portion 2512 of the knife holder 251.

[0422] As shown in FIGS. 81, 82, 84, 85A and 85B, the powder outletting knife 25 further comprises a first mounting portion 254 and a second mounting portion 255 provided on the knife holder 251 / second portion 2512, the second mounting portion 255 is arranged closer to the left side of the developing cartridge 10 compared with the first mounting portion 254 in the left-right direction; the developing frame 11 / bottom shell 11a is provided with a third mounting portion 11a1 and a fourth mounting portion 11a2, the fourth mounting portion 11a2 is arranged closer to the left side of the developing cartridge 10 compared with the third mounting portion 11a1 in the left-right direction; the first mounting portion 254 is used to cooperate with the third mounting portion 11a1, and the second mounting portion 255 is used to cooperate with the fourth mounting portion 11a2, the powder outletting knife 25 is mounted to the developing frame 11 through the first mounting portion 254 and the third mounting portion 11a1, and the second mounting portion 255 and the fourth mounting portion 11a2, and the specific mounting manner can be clamping, bonding, screwing, etc., and the mounting manner of the embodiment is screwing, for example: the first mounting portion 254 and the second mounting portion 255 are both arranged as screw holes, and the third mounting portion 11a1 and the fourth mounting portion 11a2 are both arranged as screw grooves opening towards the front, that is, the second portion 2512 is fixed to the developing frame 11 / the bottom shell 11a through the screw passing through the first mounting portion 254 into the third mounting portion 11a1 and the screw passing through the second mounting portion 255 into the fourth mounting portion 11a2.

[0423] In the direction intersecting with the left-right direction, at least a part of the first mounting portion 254 coincides with the third mounting portion 11a1, and at least a part of the second mounting portion 255 coincides with the fourth mounting portion 11a2.

[0424] As shown in FIGS. 81, 82, 85A and 85B, along the left-right direction, the first portion 2511 has a fifth end portion 2511a and a sixth end portion 2511b, the fifth end portion 2511a is arranged closer to the right side of the developing cartridge 10 compared with the sixth end portion 2511b; the bottom shell 11a is provided with a positioning protrusion 11a3 and a supporting protrusion 11a4 both extending away from the bottom shell 11a / powder bin 110 / facing cover 11b, the positioning protrusion 11a3 and the supporting protrusion 11a4 are arranged along the left-right direction, and the supporting protrusion 11a4 is located between the sixth end portion 2511b and the fourth mounting portion 11a2, and / or between the fifth end portion 2511a and the third mounting portion 11a1, at least a part of the positioning protrusion 11a3 overlaps with the fourth mounting portion 11a2 and / or at least a part of the positioning protrusion 11a3 overlaps with the third mounting portion 11a1 in the up-down direction.

[0425] As shown in FIGS. 81, 82, 86 and 87, the first part 2511 has an upwardly facing upper surface 2511c, a downwardly facing lower surface 2511d and a rearwardly facing rear surface 2511e, the rear surface 2511e connecting the upper surface 2511c and the lower surface 2511d, the rear surface 2511e being located at two opposite sides of the first part 2511 along the front-rear direction, respectively, the lower surface 2511d being configured to abut against the support protrusion 11a4 so that the blade holder 251 / the first part 2511 is supported by the support protrusion 11a4, by such a configuration, the blade holder 21 becomes more stable and is less likely to shake.

[0426] Continuing as shown in FIGS. 81, 82, 86 and 87, the first part 2511 is further provided with a positioning groove 2511f configured to cooperate / engage with the positioning protrusion 11a3, by the cooperation between the positioning protrusion 11a3 and the positioning groove 2511f, the blade holder 251 is positioned on the developing frame 11 / the bottom shell 11a.

[0427] The support protrusion 11a4 is arranged at at least one of the first end 101 and the second end 102 of the developing cartridge 10, the drawings of the present embodiment show that the support protrusion 11a4 is arranged at both the first end 101 and the second end 102 of the developing cartridge 10; the positioning protrusion 11a3 can also be arranged at at least one of the first end 101 and the second end 102 of the developing cartridge 10, the drawings of the present embodiment show that the positioning protrusion 11a3 is arranged at the second end 102 of the developing cartridge 10; by arranging the support protrusion 11a4 and the positioning protrusion 11a3 at the first end 101 and the second end 102 of the developing cartridge 10 respectively, the blade holder 251 / the first part 2511 can be more stably supported and positioned on the developing frame 11 / the bottom shell 11a.

[0428] Embodiment 23

[0429] In the present embodiment, at least a portion of the first conductive member 74 is arranged at the second end 102 of the developing cartridge 10, the first conductive member 74 is supported by the second end cover 104 and can receive power from the power output 5 of the image forming apparatus P; as shown in FIGS. 87, 88 and 89, along the left-right direction, the first conductive member 74 does not overlap with the blade holder 251, the first conductive member 74 includes a power receiving end 741 and a power output end 742 which are electrically connected to each other, the power receiving end 741 is configured to receive power from the image forming apparatus P, the power output end 742 is configured to directly or indirectly transmit power to other components of the developing cartridge 10.

[0430] As shown in FIGS. 87, 88, 89 and 90, the power receiving end 741 has a curved portion 741a exposed outside the developing cartridge 10, the power receiving end 741 is provided with a first electrical contact portion 741b for electrically connecting / electrically contacting with the power output P5, the first electrical contact portion 741b is located on the curved portion 741a, that is, the power output P5 abuts against the curved portion 741a, in some embodiments, the curved portion 741a is formed as the first electrical contact portion 741b.

[0431] In some embodiments, as shown in FIG. 90, along the left-to-right direction, the farthest end of the first conductive member 74 / power receiving end 741 exceeds the farthest end of the second end cover 104, in other words, along the left-to-right direction, the farthest end of the first conductive member 74 / power receiving end 741 protrudes beyond the farthest end of the second end cover 104, the “farthest end” refers to the end farthest from the first end portion 101 along the left-right direction, the end of the first conductive member 74 / power receiving end 741a, the end of the second end cover 104 farthest from the first end portion 101.

[0432] In some embodiments, along the left-right direction, the maximum distance between the farthest end of the first conductive member 74 / power receiving end 741 and the developing frame 11 is equal to the maximum distance between the farthest end of the second end cover 104 and the developing frame 11, or in other words, along the front-rear direction, the farthest end of the first conductive member 74 / power receiving end 741 is flush with the farthest end of the second end cover 104.

[0433] In this embodiment, the power output end 742 is used to electrically connect / electrically contact with the powder outlet blade 25, the power output end 742 is provided with a second electrical contact portion 742a for electrically connecting / electrically contacting with the blade holder 251, specifically, the second electrical contact portion 742a abuts against the rear surface 2511e of the first portion 2511 of the blade holder 251.

[0434] As shown in FIGS. 81, 85A, 87 and 88, the developing frame 11 / bottom shell 11a is provided with a first limiting protrusion 11a5 formed in a direction away from the bottom shell 11a / face cover 11b / powder tank 110, the first limiting protrusion 11a5 extends along a direction intersecting the front-rear direction, in the front-rear direction, the first limiting protrusion 11a5 is located behind the powder outlet knife 25 and the developing roller 13, and the developing frame 11 / bottom shell 11a is formed with an assembly space 11e in front of the first limiting protrusion 11a5 for accommodating at least part of the power output end 742; further, the developing frame 11 / bottom shell 11a is also provided with a second limiting protrusion 11a7 located in front of the first limiting protrusion 11a5, the second limiting protrusion 11a7 is also formed in a direction away from the bottom shell 11a / face cover 11b / powder tank 110, and in the front-rear direction, the assembly space 11e is located between the first limiting protrusion 11a5 and the second limiting protrusion 11a7.

[0435] In some embodiments, as viewed in the left-right direction, when the rear surface 2511e of the knife holder 251 and the front end of the assembly space 11e are flush, or in other words, when the rear surface 2511e of the knife holder 251 and the rear end of the second limiting protrusion 11a7 are flush, the power output end 742 / second electrical contact 742a and the assembly space 11e are in interference fit, at this time, the front end of the power output end 742 is at least in close contact with the rear surface 2511e of the knife holder 251, and a stable electrical connection / electrical contact can also be formed between the power output end 742 and the knife holder 251.

[0436] In some embodiments, as viewed in the left-right direction, the rear surface 2511e of the knife holder 251 is located within the assembly space 11e, the power output end 742 / second electrical contact 742a and the rear surface 2511e are in interference fit and in close contact, and a stable electrical connection / electrical contact can also be formed between the power output end 742 and the knife holder 251.

[0437] In some embodiments, the second electrical contact 742a can also be electrically connected to other surfaces of the first portion 2511, for example, the upper surface 2511c or the lower surface 2511d of the first portion 2511, regardless of how the second electrical contact 742a contacts the powder outlet knife 25, the second electrical contact 742a / first conductive member 74 / power output end 742 does not overlap the powder outlet knife 25 in the left-right direction.

[0438] In the front-rear direction of the developing cartridge 10, the developing cartridge 10 also has opposite third and fourth end portions 106 and 107, and the developing roller 13 is located at the third end portion 106 of the developing cartridge 10.

[0439] As shown in FIGS. 87 and 89, the developing cartridge 10 is further provided with a powder filling port 84 and a cover member 85 for sealing the powder filling port 84, the cover member 85 and the powder filling port 84 are disposed at the fourth end portion 107 of the developing cartridge 10 in the front-rear direction, and the powder filling port 84 is for filling powder into the powder reservoir 110 and is located at the second end portion 102 of the developing cartridge 10 in the left-right direction.

[0440] In the left-right direction, the powder filling port 84 does not overlap the second end cover 104, that is, the second end cover 104 does not cover the powder filling port 84, and in the front-rear direction, the maximum distance between the cover member 85 and the rotational axis of the developing roller 13 is greater than the maximum distance between the first conductive member 74 and the rotational axis of the developing roller 13, in other words, in the front-rear direction, the first conductive member 74 is located between the cover member 85 and the rotational axis of the developing roller 13.

[0441] As described above, the developing cartridge 10 further includes a pressure receiving member 17 capable of receiving the force of the pressing member of the drum cartridge 20 so that the developing roller 13 and the photosensitive drum 201 are close to or in contact with each other, and a locking member 19 disposed at the rear side of the developing cartridge 10, which engages with the locking member 207 of the drum cartridge 20 when the developing cartridge 10 is installed to the drum cartridge 20 so that the developing cartridge 10 is locked.

[0442] In the present embodiment, as shown in FIG. 89, the locking member 19 and the pressure receiving member 17 / right forced pushing portion 17R are both disposed on the cover member 85, specifically, the cover member 85 includes a cover member main body 85a, and the pressure receiving member 17 and the locking member 19 are both formed by extending from the cover member main body 85a, specifically, the pressure receiving member 17 and the locking member 19 both extend in the left-right direction, and in the left-right direction, the pressure receiving member 17 and the locking member 19 are respectively located at both sides of the cover member main body 85a, and the pressure receiving member 17 is located at the left side of the locking member 19; when the developing cartridge 10 is installed to the drum cartridge 20 / imaging device P, the locking member 19 is used to engage with the locking member 207 of the drum cartridge 20 to prevent the developing cartridge 10 from being separated from the drum cartridge 20, and the pressure receiving member 17 is used to receive the force of the pressing member of the drum cartridge 20 to prevent the photosensitive drum 201 from being in poor contact with the developing roller 13.

[0443] The cover member 85 further includes a sealing portion 85b for sealing the powder filling port 84, and in the left-right direction, the sealing portion 85b extends in the same direction as the pressure receiving member 17, that is, the sealing portion 85b extends from the cover member main body 85a towards the direction close to the powder reservoir 110 / developing frame 11.

[0444] Embodiment 24

[0445] As shown in FIGS. 91, 92 and 93, the developing cartridge 10 further comprises a first friction area 11a6 provided on the bottom shell 11a and a second friction area 11b1 provided on the face cover 11b, and each of the first friction area 11a6 and the second friction area 11b1 is provided with at least one first friction rib 11f, which is used to increase the friction coefficient between the hand of the user and the first friction rib 11f when the user holds the developing cartridge 10, so as to reduce the possibility that the developing cartridge 10 falls from the hand of the user; the first friction rib 11f extends along the left-right direction, and when the first friction area 11a6 and the second friction area 11b1 are each provided with a plurality of first friction ribs 11f, the plurality of first friction ribs 11f are arranged along the front-rear direction on the first friction area 11a6 and the second friction area 11b1.

[0446] In some embodiments, at least a portion of the first friction area 11a6 coincides with the second friction area 11b1 along the up-down direction.

[0447] In some embodiments, at least one of the first friction area 11a6 and the second friction area 11b1 is located in the central area of the developing cartridge 10 along the left-right direction.

[0448] As shown in FIGS. 92 and 93, the second friction area 11b1 comprises a first friction portion 11b2 and a second friction portion 11b3, at least a portion of the first friction portion 11b2 is located in front of the second friction portion 11b3 along the front-rear direction, and at least a portion of the first friction portion 11b2 is located below the second friction portion 11b3 along the up-down direction; the second friction portion 11b3 is provided with a second friction rib 11g extending along the left-right direction, which is used to increase the friction coefficient between the hand of the user and the second friction rib 11g when the user holds the developing cartridge 10, and the second friction rib 11g is located behind the first friction rib 11f along the front-rear direction, or in other words, compared with the first friction rib 11f, the second friction rib 11g is closer to the fourth end portion 107 along the front-rear direction, and in the second friction area 11b1, the first friction rib 11f and the second friction rib 11g each protrude from the face cover 11b towards the direction away from the bottom shell 11a / powder tank 110, and compared with the first friction rib 11f, the second friction rib 11g protrudes farther from the face cover 11b towards the direction away from the bottom shell 11a / powder tank 110, so that the developing cartridge 10 can be further prevented from falling from the hand of the user, and in addition, the second friction rib 11g can also play a role of reminding the user because the user has different tactile feelings when touching the first friction rib 11f and the second friction rib 11g.

[0449] Continuing as shown in FIGS. 92 and 93, the second friction area 11b is further provided with at least one area limiting protrusion 11b4 for limiting the extension size of the second friction area 11b / second friction portion 11b3 in the left-right direction, the area limiting protrusion 11b4 is formed protruding from the face cover 11b toward the direction away from the bottom shell 11a / powder tank 110, and in the left-right direction, the area limiting protrusion 11b4 is located at at least one of the left and right sides of the second friction portion 11b3, preferably, the left and right sides of the second friction portion 11b3 are both provided with the area limiting protrusion 11b4 in the left-right direction.

[0450] In some embodiments, the area limiting protrusion 11b4 can also limit the gripping range of the user's hand, when the user grips the developing cartridge 10, even if the user does not look at the developing cartridge 10, the user's hand can reach the position that can contact the first friction rib 11f and the second friction rib 11g through the limitation of the area limiting protrusion 11b4.

[0451] The second friction area 11b is provided with a stepped portion 11b5 between the first friction portion 11b2 and the second friction portion 11b3, which facilitates the formation of the area limiting protrusion 11b4, so that at least part of the area limiting protrusion 11b4 is arc-shaped, which in turn facilitates the bending of the user's fingers, making it easier for the user to grip the developing cartridge 10.

[0452] In some embodiments, the stepped portion 11b5 is provided as a groove with an opening facing downward, through such a design, the stepped portion 11b5 can further limit the user's hand, and the developing cartridge 10 is less likely to fall off the user's hand.

[0453] Embodiment 25

[0454] As described above, the first conductive member 74 is used to receive power from the image forming apparatus P, the power is at least supplied to the developing roller 13, the first conductive member 74 can be directly electrically connected with at least one of the developing roller 13, the powder feeding roller 15 and the powder outlet knife 25, in this embodiment, the first conductive member 74 is electrically connected with the powder outlet knife 25, the powder outlet knife 25 is electrically connected with the developing roller 13, thereby transmitting power to the developing roller 13; in some embodiments, the first conductive member 74 can also transmit power to the storage unit 14 through other conductive members.

[0455] One end of the fourth conductive member 77 is used to be electrically connected / electrically contacted with the ground terminal K, in some embodiments, the conductive assembly 72 further comprises a first electrical connection portion 73 for electrically connecting one end of the fourth conductive member 77 and the ground terminal K, the first electrical connection portion 73 can be elastically deformed, the first electrical connection portion 73 can be provided as part of the fourth conductive member 77, or can be provided separately from the fourth conductive member 77.

[0456] As shown in FIG. 94, the developing cartridge 10 further includes a storage unit 14 for storing information such as the specifications and model of the developing cartridge 10, the storage unit 14 including a substrate 141 having a front surface and a back surface disposed opposite the front surface, a memory, and electrical contacts, the electrical contacts and the memory both disposed on the substrate 141, wherein the electrical contacts are disposed on the front surface of the substrate 141 and the memory is disposed on the back surface of the substrate 141. The electrical contacts are configured to contact a stylus in the image forming device P to receive an image forming instruction from the image forming device P, the electrical contacts having a plurality (two or more), the plurality of electrical contacts including at least one ground terminal 142 configured to electrically connect with a ground stylus of the image forming device P to achieve grounding.

[0457] In some embodiments, the fourth conductive member 77 can also be electrically connected / electrically contacted with the ground terminal 142.

[0458] In some embodiments, the fourth conductive member 77 can also be omitted, the third conductive member 76 electrically connected to the storage unit 14 and electrically connected with the ground terminal 142 of the storage unit 14, or in other words, the third conductive member 76 electrically connected to the ground terminal 142, the third conductive member 76 grounded through the ground terminal 142.

[0459] In some embodiments, the storage unit 14 is electrically connected with one end of the third conductive member 76 and the other end of the third conductive member 76 is electrically connected with the powder outlet blade 25 / the developing roller 13 / the powder feeding roller 15 / the first conductive member 74. With such a design, the third conductive member 76 is grounded through the ground terminal 142 of the storage unit 14, the storage unit 14 internally controls the third conductive member 76 to be conductive or non-conductive with the ground terminal 142, to achieve the first conductive member 74 being grounded or not grounded, to perform detection.

[0460] In some embodiments, the memory can also be disposed on the same side as the electrical contacts.

[0461] As described above, the developing cartridge 10 further includes a trigger portion configured to be switchable between a first state and a second state, in the first state, the third conductive member 76 and the fourth conductive member 77 are configured to be switchable between an electrically connected state and a non-electrically connected state, in the second state, the third conductive member 76 and the fourth conductive member 77 are in the non-electrically connected state.

[0462] The first voltage control member 71 is used to control the on-off of the electrical connection between the first conductive member 74 and the ground terminal K, so as to realize the electrical detection of the developing cartridge 10. In the embodiment, as shown in FIGS. 94 and 95, the first voltage control member 71 is arranged as a control circuit board, and the control circuit board is provided with a control program for controlling whether the third conductive member 76 and the fourth conductive member 77 are electrically connected / electrically contacted. The function of the control program is similar to that of the “conductive portion 331” in the above embodiment.

[0463] Preferably, the control circuit board is integrated on the storage unit 14 / memory, that is, the control circuit board is integrally arranged with the storage unit 14. The contact end 771 of the fourth conductive member 77 is electrically connected to the control circuit board, the second connection end 762 of the third conductive member 76 is electrically connected to the control circuit board, and the first connection end 761 of the third conductive member 76 is electrically connected / electrically contacted with the powder outlet knife 25.

[0464] In some embodiments, the third conductive member 76 is directly electrically connected to the first conductive member 74. The fourth conductive member 77 can be elastic or non-elastic, as long as it can be used for electrical conduction.

[0465] Continuing as shown in FIGS. 94 and 95, in the embodiment, the storage unit 14 can be regarded as a trigger portion. When the storage unit 14 receives the imaging instruction of the image forming apparatus P in the state that the developing cartridge 10 is installed to the image forming apparatus P, the control circuit board is also activated / triggered, the trigger portion is in the first state, and whether the third conductive member 76 and the fourth conductive member 77 are electrically connected is controlled by the control program prearranged in the control circuit board. Specifically, according to the detection requirement of the image forming apparatus P, the control program controls the on-off times of the third conductive member 76 and the fourth conductive member 77 to determine whether the developing cartridge 10 is brand new. When the third conductive member 76 and the fourth conductive member 77 are electrically connected, the power received by the first conductive member 74 can be introduced to the ground terminal K through the powder outlet knife 25 / developing roller 13 / powder feeding roller 15, the third conductive member 76 and the fourth conductive member 77. When the electrical connection of the third conductive member 76 and the fourth conductive member 77 is disconnected, the power received by the first conductive member 74 cannot be introduced to the ground terminal K. The image forming apparatus P can detect the developing cartridge 10 by detecting the times of the power received by the first conductive member 74 being introduced to the ground terminal K. As described above, the power received by the first conductive member 74 being introduced to the ground terminal K is realized by the electrical connection of the third conductive member 76 and the fourth conductive member 77. Therefore, the detection of the developing cartridge 10 can be realized by controlling the times of the electrical connection and / or the times of the non-electrical connection of the third conductive member 76 and the fourth conductive member 77 within a predetermined time.

[0466] In some embodiments, the third conductive member 76 and the fourth conductive member 77 are electrically connected twice and not electrically connected twice within a predetermined detection time.

[0467] According to the above description, the first electrical connection part 73 can be in contact with the device ground terminal or the cartridge-side ground terminal, as long as the detection of the developing cartridge 10 described above can be achieved.

[0468] Embodiment 26

[0469] This embodiment focuses on the differences from Embodiment 25.

[0470] In this embodiment, the storage unit 14 can still be regarded as a trigger part. As shown in FIGS. 96A and 96B, the first voltage control member 71 / control circuit board and the storage unit 14 are separately provided, and the developing cartridge 10 is further provided with a first electrical connection part 14b for electrically connecting the storage unit 14 and the first voltage control member 71 / control circuit board, so that the storage unit 14 can send an activation signal / trigger signal to the control circuit board, and the control circuit board activated / triggered controls whether the third conductive member 76 and the fourth conductive member 77 are electrically connected / not electrically connected by using the control program preset therein.

[0471] The first connection end 761 of the third conductive member 76 is electrically connected / electrically contacted with the powder outletting knife 25 / developing roller 13 / filling roller 15 / first conductive member 74, the second connection end 762 of the third conductive member 76 is electrically connected with the control circuit board, one end of the fourth conductive member 77 is electrically connected / electrically contacted with the ground terminal K, and the contact end 771 of the fourth conductive member 77 is electrically connected with the control circuit board.

[0472] In the state that the developing cartridge 10 is installed to the image forming apparatus P, when the storage unit 14 receives the instruction of the image forming apparatus P, because the storage unit 14 and the control circuit board are electrically connected through 14b, the storage unit 14 can send an electrical signal to the control circuit board, so that the control circuit board is activated / triggered, the trigger part is in the first state, the control circuit board starts the preset control program, and then controls the number of times of electrical connection and / or non-electrical connection between the third conductive member 76 and the fourth conductive member 77, thereby achieving the detection of the developing cartridge 10.

[0473] Embodiment 27

[0474] This embodiment focuses on the differences from Embodiments 25 and 26.

[0475] As previously described, the developing cartridge 10 further includes a drive force transmission member 64 for receiving the drive force from the first drive force receiving member 12, in some embodiments, the drive force transmission member 64 is capable of directly engaging with the first drive force receiving member 12 / drive force output portion 125 to receive the drive force, in some embodiments, the drive force transmission member 64 is also capable of indirectly engaging with the first drive force receiving member 12 / drive force output portion 125 to receive the drive force, for example, at least one intermediate transmission member is provided between the drive force transmission member 64 and the drive force output portion 125, in this way, the drive force is also capable of being transmitted from the first drive force receiving member 12 to the drive force transmission member 64.

[0476] In the present embodiment, as shown in FIGS. 94, 98, 99 and 100, the first voltage control member 71 / control circuit board is provided separately from the storage unit 14, and the first voltage control member 71 / control circuit board is not activated / triggered by the electrical signal emitted by the storage unit 14; the first voltage control member 71 further includes a switch control member 71a capable of being triggered by the drive force transmission member 64, the switch control member 71a is further provided with a fourth electrical connection member 71a3 and a fifth electrical connection member 71a4, the second connection end 762 of the third conductive member 76 and the contact end 771 of the fourth conductive member 77 are both electrically connected / electrically contacted with the switch control member 71a, the fourth electrical connection member 71a3 is used to be electrically connected / non-electrically connected with the fifth electrical connection member 71a4.

[0477] The developing cartridge 10 further includes a trigger portion 64a capable of moving along with the drive force transmission member 64, for example, the trigger portion 64a is formed by protruding from the radial direction of the drive force transmission member 64, the trigger portion 64a is used to force the fourth electrical connection member 71a3 to be electrically connected / electrically contacted with the fifth electrical connection member 71a4, that is, the trigger portion 64a is capable of being switched between a first state and a second state, during the process of the drive force transmission member 64 receiving the drive force and rotating, the trigger portion 64a is capable of rotating along with the drive force transmission member 64, and forces the fourth electrical connection member 71a3 to move close to the fifth electrical connection member 71a4, thereby causing the fourth electrical connection member 71a3 to be electrically connected / electrically contacted with the fifth electrical connection member 71a4.

[0478] As shown in FIG. 98 and FIG. 100, when the fourth electrical connecting member 71a3 is electrically connected / electrically contacted with the fifth electrical connecting member 71a4, the control circuit board is activated / triggered, the trigger portion 64a is in the first state, and the control circuit board controls whether the third conductive member 76 and the fourth conductive member 77 are electrically connected / disconnected according to the detection requirement of the imaging device, thereby realizing the detection of the developing cartridge 10; as shown in FIG. 97 and FIG. 99, when the fourth electrical connecting member 71a3 and the fifth electrical connecting member 71a4 are in the non-electrically connected state, the switch control member cannot be activated / triggered, the trigger portion is in the second state, the third conductive member 76 and the fourth conductive member 77 are disconnected, and the control circuit board cannot execute the instruction of the imaging device.

[0479] Preferably, the developing cartridge 10 is further provided with a retaining member for maintaining the fourth electrical connecting member 71a3 and the fifth electrical connecting member 71a4 in the electrically connected / electrically contacted state.

[0480] In some embodiments, at least one of the fourth electrical connecting member 71a3 and the fifth electrical connecting member 71a4 is arranged inside the switch control member 71a.

[0481] In some embodiments, the switch control member 71a can be an inductive switch or a mechanical switch. As long as the switch control member 71a is a proximity switch, a contact switch, an inductive proximity switch, a capacitive proximity switch, or a photoelectric switch, the switch control member 71a can activate / trigger the first voltage control member 71 / control circuit board, the control circuit board starts the preset control program, and then controls the number of times of electrical connection and / or non-electrical connection between the third conductive member 76 and the fourth conductive member 77, thereby realizing the detection of the developing cartridge 10.

[0482] In some embodiments, after the trigger portion 64a forces the fourth electrical connecting member 71a3 and the fifth electrical connecting member 71a4 to be electrically connected / electrically contacted during the rotation of the driving force transmission member 64, the trigger portion 64a continues to rotate. In order to prevent the trigger portion 64a from interfering with the fifth electrical connecting member 74a4, the trigger portion 64a can be stopped from moving, or the movement track of the trigger portion 64a can be changed. For example, after the trigger portion 64a forces the fourth electrical connecting member 71a3 and the fifth electrical connecting member 71a4 to be electrically connected / electrically contacted, the trigger portion 64a moves along the axial direction of the developing roller 13, and the retaining member maintains the fourth electrical connecting member 71a3 and the fifth electrical connecting member 71a4 in the electrically connected / electrically contacted state.

[0483] In some embodiments, the retaining member is the trigger portion 64a, and during rotation of the driving force transmission member 64, the trigger portion 64a forces the fourth electrical connection member 71a3 and the fifth electrical connection member 71a4 to be electrically connected / electrically contacted, and the trigger portion 64a does not continue to rotate, and the trigger portion 64a is always in abutment with the fourth electrical connection member 71a3. Advantages

[0484] Compared with the prior art, the developing cartridge 10 provided by the utility model has the following advantages:

[0485] In the first aspect, the maximum dimension d1 of the power receiving end 741 of the first conductive member 74 in the direction intersecting the left-right direction is greater than or equal to the maximum dimension d2 of the neck portion 103b of the first end cover 103 in the front-rear direction, and the maximum dimension d3 between the front end of the first protruding portion 103c and the rear end of the second protruding portion 103d in the front-rear direction is less than or equal to the maximum dimension d1 of the power receiving end 741 in the direction intersecting the left-right direction; the maximum dimension d1 of the power receiving end 741 in the direction intersecting the left-right direction is greater than or equal to the maximum dimension d4 of the first gear portion 123 of the first driving force receiving member 12 in the front-rear direction, and in this way, the power receiving end 741 can more stably receive power from the image forming device, and in addition, can smoothly transmit power from the first end portion 101 to the second end portion 102.

[0486] In the second aspect, in embodiment 14, when the first voltage control member 71 moves in the direction away from the developing frame 11 under the elastic force of the second elastic member 61, the driving force of the first voltage control member 71 is cut off, the first voltage control member 71 is stationary relative to the developing frame 11, and the first voltage control member 71 can be kept in the stationary state relative to the developing frame 11 through the interaction / interworking between the second fitting portion 713 and the third fitted portion 103g; the second elastic member 61, the second fitting portion 713, and the third fitted portion 103g in the power cut-off structure are simple in structure and simple in movement, and unnecessary reverse movement of the first voltage control member 71 can be avoided in the process, ensuring the smoothness and reliability of the movement and further ensuring the stability of the electrical connection between the conductive members.

[0487] In the third aspect, in embodiment 15, the developing cartridge 10 is provided with the first movable portion 103e1 capable of moving relative in the direction intersecting the left-right direction; and the first voltage control member 71 is formed with the second accommodating portion 714a for accommodating the first movable portion 103e1.

[0488] When the first voltage control member 71 rotates to the position where the first movable part 103e1 and the second accommodating part 714a can cooperate with each other, the first voltage control member 71 moves upward under the action of the tangential force between the first driving force receiving part 711 and the transmission gear 143 until the first movable part 103e1 is accommodated by the second accommodating part 714a, at this time, the driving force of the first voltage control member 71 is cut off, through such a setting, the power transmission process of the developing cartridge 10 is simplified, the required power transmission parts are also reduced, and the production cost of the developing cartridge 10 is saved.

[0489] In the fourth aspect, in embodiment 16, the first voltage control member 71 is supported by the first end cover 103, and the rotation axis of the first voltage control member 71 is not parallel to the rotation axis of the developing roller 13, the first voltage control member 71 is arranged as a bevel gear, through such a setting, the structure of the developing cartridge 10 / developing frame 11 and the layout of the parts located at the first end part 101 can be optimized, at the same time, the developing cartridge 10 arranged in this way is convenient to install.

[0490] In the fifth aspect, in embodiment 17, in the first voltage control member 71, along the rotation direction R of the first voltage control member 71, the central angle of the arc formed between the first touch end 715a and the second touch end 715b in the first detection protrusion 715 is the first angle α, the central angle of the arc formed between the first touch end 715a in the first detection protrusion 715 and the fifth touch end 716b in the second detection protrusion 716 is the second angle β, the first angle α is greater than or equal to the second angle β, in this way, the timing difference of the detection signal of the developing cartridge 10 can be ensured, the detection signal is prevented from overlapping, and the detection result is affected.

[0491] In the sixth aspect, in embodiment 18, when the third cooperation part 103h cooperates with the first gap 717, the third cooperation part 103h no longer abuts against the second control surface 42, the first voltage control member 71 moves towards the direction close to the developing frame 11, the second electrical connection part 772a of the bending part 772 is disconnected from the electrical connection / electrical contact with the conducting part 331, the fourth conductive member 77 and the third conductive member 76 are in a non-electrically connected state, and the first driving force receiving part 711 of the first voltage control member 71 always maintains the state of mutual engagement with the transmission gear 143, in this way, the stability of the detection of the developing cartridge 10 can be improved, and the first voltage control member 71 is prevented from being accidentally disconnected and the developing cartridge 10 is prevented from being misidentified.

[0492] In the seventh aspect, the gear support portion 11d is provided with a first acting portion 11d1, and the driving force output portion 125 is provided with a first acted portion 125a. Through the interaction between the first acting portion 11d1 and the first acted portion 125a, the first driving force receiving member 12 / driving force output portion 125 and the gear support portion 11d can generate a force opposite to the dismounting direction of the first end cover 103, effectively avoiding the first driving force receiving member 12 / driving force output portion 125 from being dismounted together with the first end cover 103, so that the dismounting process of the developing cartridge 10 is simplified, and the operation difficulty is reduced.

[0493] In the eighth aspect, the first end cover 103 is provided with a third cooperation portion 103h, and the first voltage control member 71 is provided with a third control surface 49. When the third cooperation portion 103h as a triggering portion abuts against the third control surface 49, in the rotation process of the first voltage control member 71, the movement trend of the first voltage control member 71 towards the direction close to the developing frame 11 is prevented, and the third conductive member 76 and the fourth conductive member 77 can be switched between the electrically connected state and the non-electrically connected state.

[0494] After the detection of the developing cartridge 10 is completed, the third cooperation portion 103h is disengaged from the abutment with the third control surface 49. In the rotation process of the first voltage control member 71, as the abutted surface 714c and the abutted surface 103i abut against / press against each other, the first voltage control member 71 moves towards the direction close to the developing frame 11, and at least one of the third conductive member 76 and the fourth conductive member 77 is disengaged from the electrically connected / electrically contacted with the conducting portion 331, and the fourth conductive member 77 and the third conductive member 76 are in the non-electrically connected state.

[0495] In the detection process and after the detection of the developing cartridge 10 is completed, the first driving force receiving portion 711 of the first voltage control member 71 always maintains the state of mutual engagement with the transmission gear 143. In this way, the stability of the detection of the developing cartridge 10 can be improved, and the accidental disengagement of the first voltage control member 71 and the false recognition of the developing cartridge 10 can be avoided.

[0496] In the ninth aspect, the developing cartridge 10 is provided with a first separation force receiving member 18a at the first end portion 101, and the first separation force receiving member 18a is used to receive the acting force from the separation force transmission member 206 / separation force applying member, so that the developing roller 13 and the photosensitive drum 201 are separated from each other.

[0497] The first separation force receiving member 18a is arranged on the developing roller driving gear 133, and the first separation force receiving member 18a includes a first separation force receiving portion 18a1 for receiving the acting force from the separation force transmission member 206 / separation force applying member, and at least a part of the first separation force receiving portion 18a1 is located in the mounting gap 103b1 of the neck portion 103b of the first end cover 103, so that the first separation force receiving portion 18a1 is prevented from shaking and affecting the normal work of the developing cartridge 10.

[0498] In the tenth aspect, the developing frame 11 / developing housing 11a is provided with a positioning protrusion 11a3 and a supporting protrusion 11a4, and in the up-down direction, the supporting protrusion 11a4 can abut against the lower surface 2511d of the first part 2511 of the blade holder 251, and the first part 2511 is also provided with a positioning groove 2511f for mutually cooperating / mutually engaging with the positioning protrusion 11a3, so that the blade holder 251 is positioned on the developing frame 11 / developing housing 11a through the mutual cooperation of the positioning protrusion 11a3 and the positioning groove 2511f, and through such an arrangement, the blade holder 251 / first part 2511 is stably supported, the blade holder 251 is more stably mounted on the developing frame 11 / developing housing 11a, and the blade holder 251 is less likely to shake.

[0499] In the eleventh aspect, the powder outletting blade 25 further includes a bending portion 253 for connecting the first part 2511 and the second part 2512, and in the left-right direction, the bending portion 253 is located outside the projection range of the first driving force receiving member 12 / driving force output portion 125, and in the up-down direction, the bending portion 253 is farther away from the developing housing 11 / developing housing 11a than the first driving force receiving member 12 / driving force output portion 125, so that the distance between the blade holder 251 / bending portion 253 and the developing housing 11 / developing housing 11a can be increased, the direct contact and friction between the bending portion 253 and the first driving force receiving member 12 during work can be effectively reduced, the wear rate of the bending portion 253 and the first driving force receiving member 12 can be reduced, and the service life of the developing cartridge 10 can be prolonged.

[0500] In the twelfth aspect, the developing frame 11 / the bottom shell 11a is provided with a first limiting protrusion 11a5 and an assembly space 11e formed in front of the first limiting protrusion 11a5, the assembly space 11e being used for accommodating at least a part of the power output end; further, the developing frame 11 / the bottom shell 11a is also provided with a second limiting protrusion 11a7, and the assembly space 11e is located between the first limiting protrusion 11a5 and the second limiting protrusion 11a7 in the front-rear direction; as observed in the left-right direction, when the rear surface 2511e of the tool holder 251 is flush with the front end of the assembly space 11e, the power output end 742 / the second electrical contact portion 742a and the assembly space 11e are in interference fit, at this time, the front end of the power output end 742 is at least in close contact with the rear surface 2511e of the tool holder 251; as observed in the left-right direction, the rear surface 2511e of the tool holder 251 is located in the assembly space 11e, the power output end 742 / the second electrical contact portion 742a and the rear surface 2511e are in interference fit, and the two are in close contact, and a stable electrical connection / electrical contact can also be formed between the power output end 742 and the tool holder 251; in this way, at least one of the first part 2511 and the second limiting protrusion 11a7 and the first limiting protrusion 11a5 force the power output end 742 / the second electrical contact portion 742a to be in closer contact with the rear surface 2511e, thereby making the electrical connection / electrical contact between the power output end 742 and the tool holder 251 more stable.

[0501] In the thirteenth aspect, the developing cartridge 10 further comprises a first friction area 11a6 provided on the bottom shell 11a and a second friction area 11b1 provided on the face cover 11b, and the first friction area 11a6 and the second friction area 11b1 are each provided with at least one first friction rib 11f extending in the left-right direction, the first friction rib 11f being used for increasing the friction coefficient between the hand of the user and the first friction rib 11f when the user holds the developing cartridge 10, thereby reducing the possibility of the developing cartridge 10 falling from the hand of the user.

[0502] The second friction area 11b is also provided with at least one area limiting protrusion 11b4, the area limiting protrusion 11b4 being formed by protruding from the face cover 11b in a direction away from the bottom shell 11a / the powder tank 110, the area limiting protrusion 11b4 also serving to limit the gripping range of the hand of the user, and when the user holds the developing cartridge 10, even if the user does not look at the developing cartridge 10, the user's hand can reach a position that can be in contact with the first friction rib 11f and the second friction rib 11g through the limitation of the area limiting protrusion 11b4.

[0503] In the fourteenth aspect, the second friction area 11b includes a second friction part 11b3, the second friction part 11b3 is provided with a second friction rib 11g extending along the left-right direction, the second friction rib 11g is used to increase the friction coefficient between the user's hand and the second friction rib 11g when the user holds the developing cartridge 10, compared with the first friction rib 11f, the second friction rib 11g protrudes farther from the face cover 11b to the direction away from the bottom shell 11a / powder tank 110, through such setting, the developing cartridge 10 can be further prevented from falling off from the user's hand, in addition, because the user's hand feels different when contacting the first friction rib 11f and the second friction rib 11g, the second friction rib 11g can also play a role of reminding the user.

[0504] In the fifteenth aspect, the first conductive member 71 is provided as a control circuit board, the second connecting end 762 of the third conductive member 76 and the contact end 771 of the fourth conductive member 77 are both electrically connected with the control circuit board, the control circuit board can be triggered / activated by the triggering part, whether the electrical connection / electrical contact is formed between the third conductive member 76 and the fourth conductive member 77 is controlled by the control program preset in the control circuit board, so as to control the number of times of turning on / off of the third conductive member 76 and the fourth conductive member 77 according to the detection requirement of the image forming device P, and determine whether the developing cartridge 10 is brand new, in the case of such setting, the structure of the detected device becomes simple, and the manufacturing cost of the developing cartridge 10 can be reduced.

[0505] In the sixteenth aspect, the first conductive member 71 / control circuit board is further provided with a switch control member 71a, when the driving force transmission member 64 is driven to rotate by the driving force, the triggering part 64a can force the fourth electrical connection member 71a3 to form electrical connection / electrical contact with the fifth electrical connection member 71a4, the triggering part 64a is triggered, the control circuit board controls whether the electrical connection is formed between the third conductive member 76 and the fourth conductive member 77 by the preset control program to realize electrical detection, through such setting, the structure of the detected device can also become simple.

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.

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