Developing box

Abstract

The utility model relates to the technical field of electronic imaging, in particular to a developing box, comprising: a box body having a first end and a second end opposite to each other in a first direction; a developing roller that rotates about an axis extending in a first direction; the driving part receives external power to rotate and is positioned at the first end; the light-emitting part emits a light source capable of being detected by the image forming device and is positioned at the second end; the power supply part provides electric energy for light emitting for the light emitting part; the abutting piece is located at the second end and abuts against a component in the image forming device; the utility model aims to provide the developing box which is stable in operation.

Description

Technical Field

[0001] This application relates to the field of electronic imaging technology, specifically to a developing cartridge. Background Technology

[0002] The developing cartridge is a detachable part widely used in image forming apparatuses. The image forming apparatus is equipped with a blocking component, a light-emitting device, and a light source detection device. The blocking component moves back and forth under the action of the detected component on the developing cartridge to block the light source emitted by the light-emitting device. The image forming apparatus generates a signal to identify the developing cartridge when the light source is detected and when it cannot be detected. However, the blocking component may become loose after multiple rotations, which may prevent the blocking component from fully performing its function, causing the image forming apparatus to fail to accurately detect the developing cartridge. Utility Model Content

[0003] The technical problem to be solved by this application is to provide a developing cartridge that operates stably.

[0004] A developing cartridge includes: a cartridge body having a first end and a second end oppositely disposed in a first direction, a third end and a fourth end oppositely disposed in a second direction, and a fifth end and a sixth end oppositely disposed in a third direction, the first direction, the second direction, and the third direction intersecting each other; a developing roller rotating about a first axis extending in the first direction and located at the third end; an electrode located at the second end and receiving external electrical energy; a drive unit receiving external power and rotating, located at the first end; a light-emitting element closer to the fourth end relative to the developing roller in the second direction; a circuit electrically connected to the light-emitting element, the light-emitting element receiving electrical signals from the circuit and emitting light signals; and an abutment member located at the second end.

[0005] In one embodiment, a detection element is further included, which is closer to the first end than the second end. The detection element moves according to the rotation of the drive unit, thereby controlling the on and off of the circuit.

[0006] In one embodiment, the circuit includes a power supply component and a switching component, the power supply component and the light-emitting component are electrically connected, and the detected component drives the switching component to move between a conducting position and a disconnected position; when the switching component is in the conducting position, a circuit path is formed between the power supply component and the switching component; when the switching component is in the disconnected position, an open circuit is formed between the power supply component and the switching component.

[0007] In one embodiment, the circuit further includes a connector electrically connected to the power supply element, the light-emitting element, and the switching element.

[0008] In one embodiment, the connector is a steel sheet or a wire.

[0009] In one embodiment, the detected component is provided with a conductive trigger portion, the trigger portion being the switch component, and the connector includes a first conductive contact and a second conductive contact, with the trigger portion located between the first conductive contact and the second conductive contact.

[0010] In one embodiment, the trigger portion includes a first trigger portion and a second trigger portion arranged radially along the rotating member. The first trigger portion is an annular shape extending along the rotation direction of the rotating member and contacts the first conductive contact. The second trigger portion includes conductive blocks made of conductive material spaced apart along the rotation direction of the rotating member, with spacers made of insulating material between adjacent conductive blocks. When the switch is in the ON position, the second conductive contact contacts the conductive block; when the switch is in the OFF position, the second conductive contact contacts the spacer.

[0011] In one embodiment, the detected component is a rotating component, which can directly or indirectly engage with the drive unit.

[0012] In one embodiment, the object being tested may be rotated about an axis extending along the third direction or the first direction.

[0013] In one embodiment, a second idler wheel is further included, the second idler wheel having a first tooth portion, the tested component having a second tooth portion that meshes with the first tooth portion, and the first tooth portion or the second tooth portion having a missing tooth portion.

[0014] In one embodiment, the tested component includes a trigger portion for driving a switch component. The trigger portion is a protrusion on one end face along an axis and is an arc shape extending about the rotation direction of the tested component.

[0015] In one embodiment, the switch is closer to the first end than the second end.

[0016] In one embodiment, the switching element is a micro switch, the micro switch includes a trigger portion, the detected element is provided with an abutment protrusion, and the abutment protrusion drives the trigger portion of the micro switch to move between an on position and an off position.

[0017] In one embodiment, the switching device includes a switching part, the circuit includes a first terminal and a second terminal, the first terminal and the second terminal are respectively electrically connected to the power supply device or the light-emitting device through a connector, the detected device is provided with a trigger part, the trigger part drives the switching part to move between a conducting position and a disconnected position.

[0018] In one embodiment, the switch is a swing member, which is rotatably mounted on the housing. One end of the swing member is provided with the switch portion that can be electrically connected to the first terminal and the second terminal, and the other end is provided with a triggered end that cooperates with the trigger portion.

[0019] In one embodiment, the power supply is a battery, or the electrode, or a storage medium disposed on the housing.

[0020] In one embodiment, the circuit includes a control unit, the power supply component and the switch component are connected to the power supply terminal of the control unit, and the output terminal of the control unit is connected to the light-emitting component; when the switch component is in the ON position, a circuit path is formed between the power supply component, the switch component and the control unit, and the control unit outputs an electrical signal for controlling the light-emitting component to light up or turn off; when the switch component is in the OFF position, an open circuit is formed between the power supply component, the switch component and the control unit.

[0021] In one embodiment, the circuit includes a storage medium or the electrode, a power supply component, and a control unit. The storage medium or the electrode is connected to the signal input terminal of the control unit, and the output terminal of the control unit is connected to the light-emitting component. When the developing cartridge is mounted on the image forming apparatus, the control unit receives a control signal sent by the storage medium or the electrode, and outputs an electrical signal to control the light-emitting component to emit or extinguish light according to the control signal.

[0022] In one embodiment, the control unit includes a circuit board, on which a control module and a storage module are provided. The storage module is used to store a program for controlling the light-emitting element to light up and turn off. The control module executes the program and outputs an electrical signal to control the light-emitting element to light up or turn off.

[0023] In one embodiment, the circuit board has an upper surface facing away from the housing and a lower surface facing the housing, the light-emitting element is disposed on the upper surface, and the power supply element is disposed on the lower surface.

[0024] In one embodiment, the control unit is located at the second end and is closer to the fourth end in a second direction relative to the electrode.

[0025] In one embodiment, the light-emitting element and the switching element are connected by a connector, the fourth end is provided with a receiving portion to accommodate the connector, and the housing also includes a protective cover, which is installed on the receiving portion.

[0026] In one embodiment, a cover plate is further included, which extends along a first direction and is fixed to the sixth end. The light-emitting element and the switching element are connected by a connector, which is located between the cover plate and the housing.

[0027] In one embodiment, the storage medium is mounted on the cover plate.

[0028] In one embodiment, the storage medium includes an electrical contact surface located at the first end and the third end.

[0029] In one embodiment, a mounting component is also included, wherein the control unit and / or the light-emitting element are mounted on the housing via the mounting component, and the mounting component is provided with an exposure hole for the light-emitting element to emit light signals.

[0030] In one embodiment, the circuit board has exposed first and second contacts, which are connected to the control module.

[0031] In one embodiment, the circuit includes a power supply component, a switch component, a slider component, and a control unit. The power supply component and the switch component are connected to the power supply terminal of the control unit, and the output terminal of the control unit is connected to the light-emitting element. The slider component is located on the cartridge and is movable between a conducting position and a disconnected position. When the developing cartridge is installed on the image forming apparatus and the door of the image forming apparatus is not closed, the slider component is in the disconnected position, and an open circuit is formed between the power supply component, the switch component, and the control unit. During the closing process of the door, the slider component is driven to move to the conducting position, and a circuit path is formed between the power supply component, the switch component, and the control unit. The control unit outputs an electrical signal for controlling the light-emitting element to emit or extinguish.

[0032] In one embodiment, the light-emitting direction of the light-emitting element is tilted towards the third end relative to the third direction.

[0033] In one embodiment, the angle between the light-emitting direction of the light-emitting element and the second direction is 20° to 80°.

[0034] In one embodiment, the distance between the light-emitting element and the first axis is 50 mm to 75 mm.

[0035] In one embodiment, a light guide is further included, which guides the light emitted by the light-emitting element to the light source detection device of the image forming apparatus.

[0036] In one embodiment, the detected portion is closer to the developing roller in the second direction than the light-emitting element.

[0037] The specific details of this application are described in detail in the embodiments. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of the developing cartridge installed in the main housing of the image forming apparatus in Embodiment 1;

[0039] Figure 2 This is a schematic diagram of the developing cartridge in Example 1;

[0040] Figure 3 This is a structural schematic diagram of the developing cartridge from another perspective in Embodiment 1;

[0041] Figure 4 This is a schematic diagram of the rotating component in Embodiment 1;

[0042] Figure 5 This is a cross-sectional view of the rotating component and the conductive component in Embodiment 1;

[0043] Figure 6 This is a schematic diagram of the structure of the second end in Embodiment 1;

[0044] Figure 7 This is a schematic diagram of the circuit being open in Embodiment 1;

[0045] Figure 8 This is a schematic diagram of the circuit being in a closed loop in Embodiment 1;

[0046] Figure 9 This is a schematic diagram of the structure of the abutting member and the blocking member in Embodiment 1;

[0047] Figure 10 This is a schematic diagram of the signal generated by the image forming apparatus in Embodiment 1;

[0048] Figure 11 This is a schematic diagram of the developing cartridge in Example 2;

[0049] Figure 12 This is a partially exploded view of the first end in Embodiment 2;

[0050] Figure 13 This is a schematic diagram of the structure of the first end in Embodiment 2;

[0051] Figure 14 This is a cross-sectional view of the contact between the switching component and the rotating component in Embodiment 2;

[0052] Figure 15 This is a schematic diagram of the developing cartridge in Example 3;

[0053] Figure 16 This is a partially exploded view of the second end in Embodiment 3;

[0054] Figure 17This is a side view of the second end in Embodiment 3;

[0055] Figure 18 This is a schematic diagram of another developing cartridge in Example 3;

[0056] Figure 19 This is a schematic diagram of the structure of the second end in Embodiment 4;

[0057] Figure 20 This is a schematic diagram of the light source emission path in Example 4;

[0058] Figure 21 This is a schematic diagram of the developing cartridge in Example 5;

[0059] Figure 22 This is an exploded view of the second end in Example 5;

[0060] Figure 23 This is a schematic diagram of the structure in Embodiment 5 where the second end conceals the second protective cover;

[0061] Figure 24 This is a circuit diagram from Example 5;

[0062] Figure 25 This is a schematic diagram of the developing cartridge in Example 6;

[0063] Figure 26 This is a schematic diagram of the connection between the tested component and the storage medium in Embodiment Six;

[0064] Figure 27 This is a schematic diagram of the developing cartridge in Example 7;

[0065] Figure 28 This is an exploded view of the switching component and the rotating component in Embodiment 7;

[0066] Figure 29 This is a schematic diagram of the structure in Embodiment 7 where the trigger part contacts the abutment protrusion;

[0067] Figure 30 This is a schematic diagram of the contact structure between the intermediate component, the abutment protrusion, and the trigger part in Embodiment 7;

[0068] Figure 31 This is a schematic diagram of the developing cartridge in Example 8;

[0069] Figure 32 This is an exploded view of the second end in Example 8;

[0070] Figure 33 This is an exploded view of the control unit and power supply unit in Embodiment 8;

[0071] Figure 34 This is a schematic diagram of the structure of the component being tested in Example 8;

[0072] Figure 35 This is a schematic diagram of the developing cassette with a cover plate installed in Example 8;

[0073] Figure 36 This is a schematic diagram of the developing cartridge with a protective cover installed in Example 8;

[0074] Figure 37 This is a side view of the second end in Embodiment 8;

[0075] Figure 38 This is a cross-sectional view of the developing cartridge in Example 8;

[0076] Figure 39 This is a partial exploded view of the developing chamber in Example 9;

[0077] Figure 40 This is a schematic diagram of the connection between the storage medium and the control unit in Embodiment 9;

[0078] Figure 41 This is a schematic diagram of the structure in Embodiment 10 where the second end conceals the second protective cover;

[0079] Figure 42 This is a schematic diagram of the structure in Embodiment 10 where the door cover is not closed and the switch is not closed;

[0080] Figure 43 This is a schematic diagram of the door cover closing and the switch component closing in Embodiment 10;

[0081] Figure 44 This is a schematic diagram of the developing cartridge in Example 11;

[0082] Figure 45 This is a schematic diagram of the structure of the insulating component that isolates the power supply component and the control unit in Embodiment Eleven;

[0083] Figure 46 This is a schematic diagram of the developing chamber in Example Twelve;

[0084] Figure 47 This is a partially exploded view of the first end in Example Twelve;

[0085] Figure 48 This is a partial exploded view of the developing chamber in Example Twelve;

[0086] Figure 49 This is a cross-sectional view of the developing chamber in Example Twelve. Detailed Implementation

[0087] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0088] In the description of this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; unless otherwise specified or explained, the term "multiple" refers to two or more; the terms "connected," "fixed," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0089] In the description of this specification, it should be understood that the directional terms such as "upper" and "lower" used in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should also be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0090] In this specification, the left-right direction indicated in the attached drawings is the first direction, the front-back direction indicated in the attached drawings is the second direction, and the up-down direction indicated in the attached drawings is the third direction.

[0091] The present application will now be described in further detail with reference to the accompanying drawings.

[0092] Example 1:

[0093] like Figure 1 As shown, the developing cartridge 1 is detachably mounted on the drum assembly 20 of the image forming apparatus. The drum assembly 2 is provided with a photosensitive drum. The main housing 2 of the image forming apparatus is provided with a blocking member 21, a light-emitting device, and a light source detection device. The blocking member 21 blocks the light source detection device from detecting the light source emitted by the light-emitting device.

[0094] like Figures 2-8 As shown, the developing cartridge 1 includes a cartridge body 10, a transmission assembly, a first protective cover 111, an electrode 102, and a component to be tested.

[0095] like Figure 2 and Figure 3As shown, the cartridge 10 contains developer. The cartridge 10 has a first end 11 and a second end 12 oppositely disposed in a first direction; a third end 13 and a fourth end 14 oppositely disposed in a second direction; and a fifth end 15 and a sixth end 16 oppositely disposed in a third direction. The first, second, and third directions intersect each other. A first cover 111 is detachably fixedly mounted on the first end 11, and the first cover 111 at least covers the transmission assembly, serving to protect the transmission assembly. A second cover 121 is detachably mounted on the second end 12.

[0096] like Figure 3 As shown, storage medium 101 is located at the first end 11. Storage medium 101 is used to store relevant information of developing cartridge 1 and to transmit the relevant information of developing cartridge 1 to image forming apparatus. Storage medium 101 includes an electrical contact surface, which can be directly located on storage medium 101 and electrically connected to storage medium 101, or it can be electrically connected to storage medium 101 through an intermediate component. The electrical contact surface is used to directly contact image forming apparatus to transmit information in storage medium 101 to image forming apparatus. Storage medium 101 can be supported by cartridge 10, supported by first cover 111, or supported by both cartridge 10 and first cover 111.

[0097] like Figure 2 and Figure 3 As shown, the developing cartridge 1 is equipped with a developing roller 131, a powder feeding roller, and a stirring frame. The developing roller 131, powder feeding roller, and stirring frame are all supported by the cartridge body 10 and can rotate relative to the cartridge body 10. The developing roller 131 rotates about a first axis extending in a first direction, and the rotation axes of the powder feeding roller and the stirring frame also extend in the first direction. The powder feeding roller delivers developer to the developing roller 131. The developing roller 131 contacts the photosensitive drum, and the developing roller 131 delivers the developer to the photosensitive drum. The stirring frame is used to stir the developer within the cartridge body 10 to prevent developer clumping.

[0098] like Figure 6 As shown, the second end 12 is also provided with an electrode 102. The electrode 102 is used to contact the power supply terminal in the image forming apparatus to receive the electrical energy output by the image forming apparatus. After receiving the electrical energy output by the image forming apparatus, the electrode 102 transmits the electrical energy to at least one of the developing roller 131 and the powder feeding roller, so that the developing roller 131 and the powder feeding roller are charged to adsorb the developer.

[0099] like Figure 3As shown, a transmission assembly is disposed at the first end 11. The transmission assembly includes a drive portion 40 rotatably mounted on the first end 11, which rotates about a second axis extending in a first direction. The drive portion 40 includes a coaxially integrally formed drive gear 401 and a power receiving portion, with the drive gear 401 being closer to the first end 11 in the first direction than the power receiving portion. A drive portion mounting post extending in the first direction is provided on the side wall of the first end 11, and the drive portion 40 is rotatably mounted on the drive portion mounting post. The power receiving portion is used to connect to the power output shaft on the image forming apparatus to receive the power output by the image forming apparatus and transmit the power to the gear on the transmission assembly.

[0100] The transmission assembly also includes a developing gear 41, a powder feeding gear 42, a first idler gear 43, a stirring gear 44, and a second idler gear 45. The developing gear 41 is fixedly mounted on the end of the developing roller 131 near the first end 11 in a first direction. The developing gear 41 receives power transmitted from the drive gear 401 and drives the shaft of the developing roller 131 to rotate together. The powder feeding gear 42 is coaxially fixedly mounted on the end of the powder feeding roller near the first end 11 and rotates together with the powder feeding roller. The stirring gear 44 is coaxially fixedly mounted on the end of the stirring frame near the first end 11 and rotates together with the stirring frame. The developing gear 41, the powder feeding gear 42, and the first idler gear 43 all mesh with the drive gear 401 to receive power, and the first idler gear 43 meshes with the stirring gear 44 to transmit power to the stirring gear 44. The stirring gear 44 meshes with the second idler gear 45 to cause the second idler gear 45 to rotate. The axis of rotation of the second idler gear 45 extends in a first direction. The second idler gear 45 includes a first bevel tooth portion 450 and a tooth-deficient portion. The second idler gear 45 can disengage from the stirring gear 44 and stop rotating. This embodiment does not limit the number of gears in the transmission assembly or the meshing relationship between the gears; it can be set according to actual needs.

[0101] like Figures 2-8 As shown, in this embodiment, the component being detected includes a rotating member 51, a triggering part, a conductive member, a connecting member 53, a power supply member 54, and a light-emitting member 55. The connecting member 53 electrically connects the power supply member 54, the light-emitting member 55, and the triggering part together. In this embodiment, the connecting member 53 is a conductive member, preferably a conductive steel sheet, but in some embodiments it can also be a wire. The triggering part, the conductive member, the power supply member 54, and the light-emitting member 55 are connected by the connecting member 53 to form a circuit and realize the transfer of electrical energy.

[0102] like Figures 3-4As shown, the rotating member 51 is disposed near the first end 11. The rotating member 51 includes a second bevel tooth portion 510, which meshes with the first bevel tooth portion 450 so that the rotating member 51 receives power transmitted by the second idler wheel 45 and rotates. The rotation axis of the rotating member 51 intersects the first direction. Preferably, the rotation axis of the rotating member 51 extends upward in the third direction. When the toothed portion of the second idler wheel 45 is opposite to the stirring gear 44, the rotating member 51 follows the second idler wheel 45 and stops rotating. In some embodiments, the second bevel tooth portion 510 of the rotating member 51 may be toothed, and the second bevel tooth 510 may disengage from the second idler wheel 45 and stop rotating.

[0103] The trigger part is located on the top of the rotating member 51 and can be fixedly connected to the rotating member 51 by welding or gluing. The trigger part rotates with the rotating member 51 and is made of conductive material, preferably a conductive steel sheet, which is generally disc-shaped. The connecting member 53 includes a first conductive contact and a second conductive contact, and the trigger part is located between the first conductive contact and the second conductive contact. The trigger part rotates with the rotating member 51 and is used to connect or disconnect the first conductive contact and the second conductive contact, thereby generating an electrical signal to control the light-emitting element 55 to light up or turn off. That is, in this embodiment, the rotating member 51 is the detected element that controls the on / off state of the circuit, which indirectly determines whether the circuit is on or off, and the trigger part on it can be regarded as a switch. In some embodiments, the detected element can be a translational element (such as a rack).

[0104] The example triggering part includes a first triggering part 500 and a second triggering part. The first triggering part 500 is a complete circle. The second triggering part is located inside the first triggering part 500 in the radial direction of the rotating member 51. The second triggering part is composed of multiple conductive blocks, with spacers between the conductive blocks. The spacers are made of insulating material. In some embodiments, a portion of the rotating member 51 is made of conductive material or has conductive material disposed thereon to serve as the triggering part.

[0105] As an example, the second triggering part includes a first conductive block 501, a second conductive block 502, a third conductive block 503, a fourth conductive block 504, and a fifth conductive block 505, with each conductive block spaced apart along the rotation direction of the rotating member 51. The spacers include a first spacer 511, a second spacer 512, a third spacer 513, a fourth spacer 514, and a fifth spacer 515, also spaced apart along the rotation direction of the rotating member 51. For example, a first conductive block 501 is disposed between the first spacer 511 and the second spacer 512. This embodiment does not limit the number, shape, or size of the conductive blocks and spacers; they can be configured according to actual needs.

[0106] like Figure 3 and Figure 5As shown, the conductive element is made of a conductive material, which can be conductive resin or a metal such as conductive steel sheet. The conductive element includes a first conductive element 521 and a second conductive element 522. The first conductive element 521 and the second conductive element 522 do not contact each other, and both the first conductive element 521 and the second conductive element 522 are electrically connected to the connector 53, but they cannot directly contact each other for electrical connection. The first conductive element 521 includes a first contact protrusion 5211 (i.e., a first conductive contact), and the second conductive element 522 includes a second contact protrusion 5221 (i.e., a second conductive contact). In the first direction, the first contact protrusion 5211 and the second contact protrusion 5221 are arranged on the left and right, respectively, that is, they are staggered in the first direction. In this embodiment, it is preferred that the first contact protrusion 5211 is further away from the rotation axis of the rotating element 51 than the second contact protrusion 5221. The first contact protrusion 5211 is used to contact the first trigger part 500, and the second contact protrusion 5221 is used to contact the second trigger part. When the first contact protrusion 5211 and the second contact protrusion 5221 are simultaneously in contact with the first trigger part 500 and the second trigger part, respectively, the first conductor 521 and the second conductor 522 are electrically connected. When only the first contact protrusion 5211 is in contact with the first trigger part 500, the first conductor 521 and the second conductor 522 are not electrically connected.

[0107] like Figure 2 and Figure 7 As shown, in this embodiment, the power supply component 54 is preferably a battery. The power supply component 54 stores electrical energy. When the power supply component 54 is in a closed circuit, it releases electrical energy and transfers it to the components in the circuit. The power supply component 54 includes a positive electrode 541 (+) and a negative electrode 542 (-). The connector 53 connects the positive electrode 541 and the negative electrode 542 respectively, so that the electrical energy can form a complete circuit. In this embodiment, it is preferred that the positive electrode 541 is closer to the first end 11 than the negative electrode 542 in the first direction. In the first direction, the power supply component 54 is located between the light-emitting component 55 and the conductive component.

[0108] The light-emitting element 55 is located at the second end 12 and is connected to the connector 53. When the circuit is open, it receives electrical energy released by the power supply element 54 and emits light. The light-emitting element can be an LED light, a small bulb, or other light-emitting objects. In the second direction, the light-emitting element 55 is further away from the developing roller 131 than the electrode 102.

[0109] A top cover 151 is provided at the fifth end 15, and a first mounting part 105 is provided on the top cover 151. The first mounting part 105 is a groove-shaped recessed in the third direction. The first mounting part 105 is used to enable the power supply component 54 to be stably installed on the housing 10. The connector 53 and the conductor are located at the fifth end 15 and supported by the top cover 151.

[0110] like Figure 6As shown, the second cover 121 is provided with an abutment 1211, a second mounting portion 1212, and a third mounting portion 1213. The abutment 1211 is a protrusion extending upward in a second direction or a third direction. The abutment 1211 is used to contact the blocking member 21. In some embodiments, the abutment 1211 may be directly provided on the housing 10 or located as a separate component at the second end 12. In the second direction, the abutment 1211 is further away from the developing roller 131 than the electrode 102. In this embodiment, it is preferred that the abutment 1211 is closer to the developing roller 131 than the light-emitting element 55 in the second direction. The second mounting portion 1212 is used to mount the light-emitting element 55. The third mounting portion 1213 is a groove in the first direction. The third mounting portion 1213 is used to support the portion of the connector 53 located on the second cover 121, so that the connector 53 and the light-emitting element 55 are stably connected.

[0111] In this embodiment, based on the connection of the connector 53 to the conductive element, the light-emitting element 55 and the power supply element 54, the connector 53 is divided into a first connecting part 531, a second connecting part 532 and a third connecting part 533. The second connecting part 532 and the third connecting part 533 are always connected to the light-emitting element 55 and the power supply element 54 respectively. The first connecting part 531 is turned on according to whether the second conductive element 522 is in contact with the second triggering part to determine whether the entire circuit is turned on, thereby affecting whether the light-emitting element 55 can emit light.

[0112] like Figure 7 and Figure 8 As shown, when the first conductive element 521 is in contact with the first trigger part 500 and the second conductive element 522 is in contact with the first spacer block 511, the entire circuit is in an open circuit state and the light-emitting element 55 does not emit light. When the first conductive element 521 is in contact with the first trigger part 500 and the second conductive element 522 is in contact with the first conductive block 501, the entire circuit is in a closed circuit state and the light-emitting element 55 emits light.

[0113] The rotation of the rotating member 51 determines whether the second conductive member 522 can contact the conductive block in the second trigger part, thereby ensuring the circuit is open and whether the light-emitting member 55 can emit light.

[0114] like Figure 9 and Figure 10 As shown, when the developing cartridge 1 is installed on the drum assembly 20 and located inside the image forming apparatus, the abutment member 1211 abuts against the blocking member 21 and remains in abutment state. This causes the blocking member 21 to move and block the light source emitted by the light-emitting device inside the image forming apparatus. The light source detection device inside the image forming apparatus cannot detect the light source and generates the first signal T1. At this time, the circuit on the developing cartridge 1 is in an open circuit state, the second conductive member 522 is in contact with the first spacer block 511, and the light-emitting member 55 does not emit light.

[0115] When the driving unit 40 receives the power output from the image forming apparatus, and the rotating member 51 rotates after receiving the power transmitted by the driving unit 40, the second conductive member 522 passes over the first spacer block 511 and contacts the first conductive block 501, making the circuit in a closed state. The light-emitting member 55 emits light under the action of the electrical energy released by the power supply unit 54. After the light source detection device detects the light source, it generates a second signal T2. As the rotating member 51 rotates, the second conductive member 522 continuously contacts multiple spacers and conductive layers, thereby causing the light-emitting member 55 to emit and extinguish light multiple times. The image forming apparatus generates signals multiple times. The emitting and extinguishing process is the same as the above process, only the emitting time and interval are different, which will not be described in detail here. The extinguishing mentioned in this embodiment can be that the light-emitting member 55 does not emit light at all, or the intensity of the emitted light is insufficient to be detected by the light source detection device.

[0116] When the rotating component 51 stops rotating following the second idler wheel 45, the second conductive component 522 contacts the first spacer block 511 again, the circuit is in an open circuit state, the light-emitting component 55 is turned off, and the light source detection device cannot detect the light source.

[0117] In this embodiment, the presence or absence of light emission by the light-emitting element satisfies the information such as the number of times the light source is detected by the light source detection device and the duration of the interval, and forms a signal, enabling the image forming apparatus to identify the developing cartridge 1. This embodiment does not limit the number of times or the duration of light emission, and can be set according to actual needs.

[0118] Example 2:

[0119] Unless otherwise specified, the structure of the developing cartridge 1 in this embodiment is the same as that in Embodiment 1. The difference between this embodiment and Embodiment 1 is that the structure of the component being tested is different.

[0120] like Figures 11-14 As shown, in this embodiment, the rotating member 46 receives power from the stirring gear 44 and rotates. Its rotation axis extends in the first direction. The rotating member 46 includes a gear part 461, an abutment part 462, and a recessed part 463. The gear part 461 is missing teeth. It can mesh with the stirring gear 44 and rotate, or it can disengage from the stirring gear 44 and stop rotating. In the first direction, the abutment part 462 is closer to the second end 12 than the gear part 461. The recessed part 463 is recessed in the radial direction of the rotating member 46. The recessed part 463 and the abutment part 462 form a complete circle. An inclined surface 4631 is provided on the recessed part 463. The inclined surface 4631 can also be an arc surface.

[0121] In this embodiment, the component under test includes a power supply component 54 and a light-emitting component 55, which are the same as in Embodiment 1 and will not be described again here. The component under test also includes a connector 53, a switch component 56, and a control unit 57. The connector 53 is preferably a conductive steel sheet or a wire, and is used to connect the other components in the component under test to form a conductive circuit, thereby causing the light-emitting component 55 to emit light so that the light source detection device can detect the signal.

[0122] The housing 10 is provided with a support portion 106, which is a cylindrical protrusion extending in the second direction. The switch 56 is a swinging member, and the switch 56 is provided with a supported portion 563, which is a circular hole. The switch 56 and the support portion 106 are connected by a shaft hole so that the switch 56 is rotatably supported by the housing 10. The axis of rotation of the switch 56 extends in the second direction. The switch 56 also includes a trigger end (i.e., a switch portion) and a contact end 562. The trigger end and the contact end 562 are located at opposite ends of the switch 56 in the first direction. The trigger end is closer to the second end 12 than the contact end 562, and the supported portion 563 is located between the two. The trigger end includes a first trigger portion 5611 and a second trigger portion 5612, which are protruding and arranged to the left and right in the first direction. Preferably, the first trigger portion 5611 is farther away from the second end 12 than the second trigger portion 5612. The abutting end 562 is used to contact the rotating member 46, causing the switching member 56 to swing relative to the housing 10. When the abutting end 562 is located in the recess 563 of the switching member 56, the trigger end is in a raised state; when the abutting end 562 abuts against the abutting portion 462, the trigger end is in a pressed state. At least the trigger end of the switching member 56 is made of conductive material, or the entire switching member 56 may be made of conductive material.

[0123] The control unit 57 includes a control module and a storage module. The storage module stores a program for controlling the light-emitting element 55 to light up and turn off. The control module executes the program and outputs an electrical signal to control the light-emitting element to light up or turn off. When the circuit containing the control unit 57 and the light-emitting element 55 is open, the light-emitting element 55 lights up and turns off according to the instructions of the control unit 57. The duration and number of times the light-emitting and turning-off occur are controlled by the control unit 57.

[0124] The connector 53 has a first connecting portion 591 and a second connecting portion 592 near the first end 11. The first connecting portion 591 has a certain elasticity. The first connecting portion 591 and the second connecting portion 592 do not directly contact each other and are arranged to the left and right in the first direction. In the first direction, the second connecting portion 592 is closer to the second end 12 than the first connecting portion 591. The first connecting portion 591 and the second connecting portion 592 contact the first trigger portion 5611 and the second trigger portion 5612, respectively. When the first connecting portion 591 contacts the first trigger portion 5611 and the second connecting portion 592 contacts the second trigger portion 5612, that is, when the trigger end is in a pressed state, the connector 53 connects the entire detected component into a conductive loop. The light-emitting element 55 receives the electrical energy released by the power supply element 54 and lights up and turns off under the command issued by the control unit 57. In this embodiment, the first connecting part 591 and the second connecting part 592 can be regarded as the first conductive element and the second conductive element, respectively, or they can be conductive elements that are separately provided to make electrical contact with the switching element, as in Embodiment 1.

[0125] When the developing cartridge 1 does not receive power output from the image forming apparatus, the abutted end 562 is located at the recessed portion 463 of the rotating member 46, the trigger end is in a raised state, at least the second connecting portion 592 does not contact the second trigger portion 5612, the entire circuit is in an open circuit state, and the light-emitting member 55 does not emit light.

[0126] When the drive unit 40 receives the power output from the image forming apparatus and transmits the power to the rotating member 46 to make the rotating member 46 rotate, the abutting end 562 abuts against the inclined surface 4631 of the recessed part 463 and gradually disengages from the recessed part 463. The switch member 56 rotates relative to the housing 10. When the recessed part 463 disengages from the abutting part 562, the trigger end is in a pressed state. The first connecting part 591 contacts the first trigger part 5611 and the second connecting part 592 contacts the second trigger part 5612, thereby making the entire circuit conductive. The light-emitting member 55 emits light. The first connecting part 591 is squeezed by the first trigger part 5611 and has elastic force.

[0127] As the rotating component 46 continues to rotate, the light-emitting component 55 alternates between emitting and extinguishing light. When the rotating component 46 disengages from the stirring gear 44 and stops rotating, the detection ends, and the abutted end 562 returns to the recessed portion 463. The first connecting portion 591 releases its elastic force, causing the switch component 56 to swing in the opposite direction, thus keeping the trigger end in a raised state. At least the second connecting portion 592 does not contact the second trigger portion 5612, and the entire circuit is in an open circuit state. Alternatively, a separate elastic component can be provided to make the switch component 56 swing in the opposite direction, or the weight of the abutted end 562 can be made greater than the weight of the trigger end, causing the abutted end 562 to swing again due to gravity.

[0128] In this embodiment, the rotating member 46 controls the switching member 56 to move between the on and off positions. The switching member 56 activates and / or deactivates the control unit 57. The control unit 57 generates an electrical signal to control the light-emitting member 55 to light up or turn off. In other words, in this embodiment, the rotating member 46 is the detected member that controls the on / off state of the control circuit.

[0129] Example 3:

[0130] Unless otherwise specified, the structure of the developing cartridge 1 in this embodiment is the same as that in Embodiment 1. The difference between this embodiment and Embodiment 1 is that the component being tested also includes a light guide 61.

[0131] like Figures 15-17 As shown, the light-emitting element 55 receives electrical energy released by the power supply element 54 and emits light. The light source emitted by the light-emitting element 55 is not directly received by the light source detection device 201, but is indirectly transmitted to the light source detection device through the light guide element 61.

[0132] In this embodiment, the light-emitting element 55 is disposed on the box body 10, preferably at the fifth end 15, and the distance between the light-emitting element 55 and the second end 12 in the first direction is less than the distance between the light-emitting element 55 and the first end 11. That is, the light-emitting element 55 is supported by the box body 10, so that the connector 53 connected to the light-emitting element 55 also only needs to be disposed on the box body 10, thereby simplifying the structure and installation difficulty of the connector 53. In some embodiments, it may also be supported by the second cover 121.

[0133] The second cover 121 is provided with a mounting groove 1214 extending in a first direction. The light guide 61 is at least partially located within the mounting groove 1214, and the light guide 61 is preferably fixedly mounted within the mounting groove 1214 by a snap-fit ​​method. The light guide 61 is preferably a light guide post, and the light guide 61 includes a light receiving part 611 and a light transmitting part 612. In the first direction, the light receiving part 611 is closer to the first end 11 than the light transmitting part 612. The light receiving part 611 is a columnar shape extending in the first direction. The light receiving part 611 is disposed adjacent to the light emitting element 55, and a light inlet is provided on the light receiving part 611 to receive the light source emitted by the light emitting element 55. In the first direction, the light transmission part 612 is further away from the light-emitting element 55 than the light receiving part 611. Preferably, they are integrally formed, but they can also be separate components. The light transmission part 612 protrudes from the light receiving part 611, and their junction is curved or zigzag-shaped. The light transmission part 612 protrudes upwards in a third direction and forwards in a second direction, meaning its extension direction intersects with both the second and third directions. The light transmission part 612 has a light outlet for transmitting the light source received by the light guide 61 to the outside. The light inlet of the light receiving part 611 receives the light source emitted by the light-emitting element 55 and transmits it to the light transmission part 612 via reflection within the light guide 61, so that the light source exits from the light outlet along the X direction and is transmitted to the light source detection device 201.

[0134] The light guide 61 is also provided with a buckle so that the light guide 61 can be stably set on the second cover 121. In some embodiments, it can also be supported by the box body 10 or supported by the box body 10 and the second cover 121.

[0135] like Figure 18 As shown, in some embodiments, the light-emitting element 55 can be positioned adjacent to the first end 11, that is, the distance between the light-emitting element 55 and the second end 12 in the first direction is greater than the distance between the light-emitting element 55 and the first end 11. Simultaneously, the length of the light-receiving part 611 in the first direction is increased so that the light guide 61 can stably receive the light source transmitted by the light-emitting element 55. This structure can further simplify the structure of the circuit where the light-emitting element 55 is located and reduce the production cost of the developing cartridge 1. It can also be shown that the position of the light-emitting element 55 in this embodiment has no effect on whether the light-emitting element 55 stably transmits the light source to the light source detection device; the position of the light-emitting element 55 can be set according to actual needs.

[0136] Example 4:

[0137] Unless otherwise specified, the structure of the developing cartridge 1 in this embodiment is the same as that in Embodiment 3. The difference between this embodiment and Embodiment 3 is that the structure of the light guide is different.

[0138] like Figures 19-20As shown, in this embodiment, the light guide 61 is a light guide plate, and a light guide surface 610 is provided on the light guide 61. The light guide surface 610 can be a mirror or other surface with reflective function. The extension direction of the light guide surface 610 is inclined relative to the first direction, the second direction, and the third direction. That is, the light guide surface 610 extends to the left in the first direction, extends forward in the second direction, and extends upward in the third direction. In this embodiment, the intersection angle between the light guide surface 610 and the first direction, the second direction, and the third direction is not limited, so that all or part of the light source can be transmitted to the light source detection device 201.

[0139] When the light-emitting element 55 emits a light source, the light source is transmitted to the light guide surface 610 along the X1 direction. In this embodiment, the X1 direction is preferably parallel to the first direction, but it can also be tilted relative to the first direction. After the light guide surface 610 receives the light source, it causes the light source to be emitted, which in turn causes the light source to be reflected to the light source detection device 201 along the X2 direction. The X2 direction intersects the X1 direction.

[0140] In this embodiment, the light-emitting element 55 can be placed near the second end 12, or the light-emitting element 55 can be placed near the first end 11 after the light source is stably transmitted to the light guide surface 610, so as to further simplify the structure of the circuit where the light-emitting element 55 is located.

[0141] Example 5:

[0142] Unless otherwise specified, the structure of the developing cartridge 1 in this embodiment is the same as that in Embodiment 1. The difference between this embodiment and Embodiment 1 is that the structure of the power supply component is different. In this embodiment, the developing cartridge 1 does not need to be equipped with a power supply component with its own power.

[0143] like Figures 21-24 As shown, the developing cartridge 1 is provided with an electrical transmission component, which is used to electrically connect with the connector 53 and the electrode 102 so that the connector 53 receives the electrical energy transmitted by the electrode 102, thereby enabling the light-emitting element 55 to receive electrical energy and emit light. That is, the electrode can be regarded as the power supply component in this embodiment, which meets the electrical energy requirements of the light-emitting element 55 when it emits light.

[0144] A bearing 103 is provided at the second end 12, and the bearing 103 rotatably supports the developing roller 131 and the powder feeding roller located at the end of the second end 12. The electrode 102 is preferably a conductive steel sheet. The electrode 102 is supported by the bearing 103 and includes an electrical receiving part 1021. The electrical receiving part 1021 receives electrical energy output from the image forming apparatus by connecting to the power supply terminal in the image forming apparatus. The electrode 1021 transmits electrical energy to the developing roller 131 and the powder feeding roller, and at the same time provides electrical energy by being electrically connected to the connector 53 through the electrical transmission element.

[0145] In this embodiment, to rationally arrange the installation and layout of the electrical transmission components, the preferred electrical transmission components include a first electrical transmission component 63 and a second electrical transmission component 64. Both are preferably conductive steel sheets, but other conductive materials are also acceptable. The first electrical transmission component 63 and the second electrical transmission component 64 are supported by the housing 10, the bearing 103, or the second cover 121. In some embodiments, they can be integrally formed. The first electrical transmission component 63 directly contacts the electrode 102 to receive the electrical energy transmitted by the electrode 102. One end of the second electrical transmission component 64 contacts the first electrical transmission component 63, and the other end contacts the connector 53. This allows the electrical energy received from the electrode 102 by the first electrical transmission component 63 to be transmitted to the connector 53 through the second electrical transmission component 64. This enables the circuit containing the light-emitting element 55 to receive external electrical energy, thereby meeting the power requirements of the light-emitting element 55 when the circuit is in a closed state, ensuring that the light-emitting element 55 stably emits light and that the light source detection device 201 detects the light source. The electrical transmission component can be integrally formed with the connector 53, that is, the connector 53 is in direct electrical contact with the electrode 102, or the electrical transmission component is in direct contact with the power supply terminal on the image forming apparatus to receive electrical energy, and the electrical transmission component serves as a power supply component.

[0146] This embodiment also includes a grounding element 62, which ensures that the circuit containing the light-emitting element 55 forms a complete loop, guaranteeing the safety and stability of the circuit. Preferably, the grounding element 62 is positioned close to the first end 11, meaning the distance between the grounding element 62 and the second end 12 in the first direction is greater than the distance between the grounding element 62 and the first end 11. One end of the grounding element 62 contacts the trigger portion, and the other end contacts the exterior of the developing cartridge 1, preferably contacting a metal component within the image forming apparatus. In this embodiment, the grounding element 62 is preferably a conductive elastic element, such as a spring. This conductive elastic element can elastically avoid interference components within the image forming apparatus during the installation of the developing cartridge 1 into the image forming apparatus, ensuring stable installation of the developing cartridge 1 into the image forming apparatus and stable contact with the metal components within the image forming apparatus after installation.

[0147] The developing roller 131 includes a developing roller shaft and a developing body. The developing roller shaft drives the developing body to rotate. The developing body is made of conductive rubber. The powder feeding roller includes a powder feeding roller shaft and a powder feeding body. The powder feeding roller shaft drives the powder feeding body to rotate. The powder feeding body is made of conductive sponge material. In this embodiment, the developing roller shaft and the developing body are electrically connected, and the powder feeding roller shaft and the powder feeding body are also electrically connected. The developing body and the powder feeding body are used to adsorb developer. The electrode 102 is in direct contact with the developing roller shaft and the powder feeding roller shaft to transfer electrical energy.

[0148] In some embodiments, the developing roller and the developing body are not electrically connected (i.e., insulated), the developing roller does not receive electrical energy, and the powder feeding body contacts the developing body to transfer electrical energy to the developing body. Alternatively, an intermediate conductive element, such as a spring, may be provided, which is electrically connected to the electrode 102 and the developing body to further enable the developing body to receive electrical energy. Alternatively, a powder discharge blade used to limit the thickness of the developer layer on the developing body may be electrically connected to the electrode 102, and the powder discharge blade may act as an intermediate conductive element electrically connected to the developing body.

[0149] Example 6:

[0150] Unless otherwise specified, the structure of the developing cartridge 1 in this embodiment is the same as that in Embodiment 5. The difference between this embodiment and Embodiment 5 is that the structure of the power supply component is different.

[0151] like Figures 25-26 As shown, in this embodiment, the electrical contact surface on the storage medium 101 provides power to the circuit where the light-emitting element 55 is located; that is, the electrical contact surface serves as the power supply component in this embodiment. The connector 53 includes a first line 534 and a second line 535, which connect the power supply component, the light-emitting element 55, and the conductive element together to form a circuit.

[0152] The storage medium 101 has multiple electrical contact surfaces, which are electrically connected to the storage medium 101. The electrical contact surfaces include a first electrical contact surface and a second electrical contact surface, which are spaced apart. A first line 534 contacts the first electrical contact surface, and a second line 535 contacts the second electrical contact surface. The first line 534 receives electrical energy emitted from the first electrical contact surface and allows the electrical energy to return to the second electrical contact surface after passing through the light-emitting element 55, the conductive element, and the second line 535. In this embodiment, the first electrical contact surface can be considered as the positive electrode of the battery, and the second electrical contact surface can be considered as the negative electrode.

[0153] In one embodiment, the first electrical contact surface 1011 serves as a power supply component to receive external electrical energy and transmits it to the light-emitting component 55 through the first line 534, while the second line 535 serves as a grounding component to contact external components to realize a circuit loop.

[0154] In another embodiment, there is no need to set up a rotating member 51 and a conducting member; the circuit itself is a complete loop. The storage medium 101 stores first information and second information. The first information is information on controlling the light emission duration and light emission interval of the light-emitting element 55, and the second information is other information about the developing cartridge 1. After the developing cartridge 1 is installed in the image forming apparatus, the electrical contact surface of the storage medium 101 provides electrical energy to the light-emitting element 55 and simultaneously acts as a control unit to control the light-emitting element 55 to emit light at appropriate times, so that the light source detection device 201 detects the light source and thereby causes the image forming apparatus to generate a signal.

[0155] Example 7:

[0156] Unless otherwise specified, the structure of the developing cartridge 1 in this embodiment is the same as that in Embodiment 1. The difference between this embodiment and Embodiment 1 is that the structure of the trigger part is different.

[0157] like Figures 27-30 As shown, the component being tested in this embodiment includes a rotating component 60, a switching component 71, a connecting component 53, a power supply component 54, and a light-emitting component 55. The connecting component 53 connects the switching component 71, the power supply component 54, and the light-emitting component 55 in a circuit. The connecting component 53, the power supply component 54, and the light-emitting component 55 are the same as or similar to those in the above embodiment, and will not be described again here.

[0158] The switch 71 is preferably located close to the first end 11. The switch 71 acts as a switch to determine whether the circuit containing the light-emitting element 55 is connected. A support 107 is provided on the housing 10. The support 107 includes a support post 1070 and a fixing buckle 1071. The support post 1070 extends upward in a third direction, and the fixing buckle 1071 is an elastic buckle. Preferably, there are multiple support posts 1070 and fixing buckles 1071. The switch 71 includes a first hole 710, which is preferably a through hole extending upward in a third direction. The number of first holes 710 matches the number of support posts 1070. A axial hole fit is formed between the first holes 710 and the support posts 1070 to allow the switch 71 to be mounted on the housing 10. The fixing buckles 1071 are snapped onto both ends of the switch 71 in a second direction to further secure the switch 71. In other embodiments, the switch 71 may be fixed to the housing 10 by welding or screws.

[0159] The switch 71 also includes a first terminal 712, a second terminal 713, and a trigger part 72. The first terminal 712 is connected to the power supply 54 via a connector 53, and the second terminal 713 is connected to the integrated board 550 via the connector 53. The trigger part 72 is a protrusion protruding in a first direction and is movably mounted on the main body of the switch 71, and is further movable relative to the main body of the switch 71 in the first direction. The switch 71 includes a second hole 711 extending in the first direction. The second hole 711 is preferably a blind hole. The trigger part 72 is at least partially movable within the second hole 711. To ensure that it does not detach from the second hole 711, a limiting structure such as a latch can be provided between the two. A first elastic member 720 is provided between the trigger part 72 and the sidewall of the second hole 711. The first elastic member 720 is preferably a compression spring, but can also be other elastic media. The first elastic member 720 can be compressed and extended in the first direction. It has a first position and a second position in the first direction, with the first position being further away from the second end 12 than the second position. When the trigger part 72 is in the second position, the circuit of the light-emitting element 55 is open, and the light-emitting element 55 emits light (the light source can be infrared light or other types of light sources); when the trigger part 72 is in the first position, the circuit of the light-emitting element 55 is closed, and the light-emitting element 55 does not emit light. When the trigger part 72 is subjected to an external force, it moves in the first direction toward the second end 12 to move from the first position to the second position, and the first elastic element 720 is compressed and continues to exert elastic force; when the external force disappears, the trigger part 72 moves in the first direction toward the first end 11 under the action of the first elastic element 720 to move from the second position to the first position.

[0160] The rotating member 60 is rotatably disposed at the first end 11. The rotating member 60 receives power transmitted by the transmission assembly and rotates. The axis of rotation of the rotating member 60 extends in a first direction. The rotating member 60 includes an engaging portion 600 and an abutting protrusion. The engaging portion 600 is toothed. The engaging portion 600 engages with the stirring gear 44 to allow the rotating member 60 to receive power and rotate. The toothed structure allows the engaging portion 600 to disengage from the stirring gear 44, thereby stopping the rotating member 60 from rotating.

[0161] The abutment protrusions are used to abut against the trigger portion 72 and drive the trigger portion 72 to move in a first direction. Multiple abutment protrusions protrude in the first direction. Preferably, the abutment protrusions include a first abutment protrusion 601, a second abutment protrusion 602, and a third abutment protrusion 603 spaced apart in the rotational direction of the rotating member 60. In the rotational direction of the rotating member 60, the first abutment protrusion 601, the second abutment protrusion 602, and the third abutment protrusion 603 sequentially abut against the trigger portion 72, causing the trigger portion 72 to move in the first direction toward the second end 12. To make the abutment protrusions and the trigger portion 72 abut against each other more smoothly, the first abutment protrusion 601, the second abutment protrusion 602, and the third abutment protrusion 603 are all provided with inclined or curved abutment surfaces, the extension direction of which intersects the first direction. Similarly, an inclined surface can also be provided on the trigger portion 72. The arc lengths of the first abutting protrusion 601, the second abutting protrusion 602, and the third abutting protrusion 603 can be the same or different, and the angle between their abutting surfaces and the first direction can be the same or different, which can be set according to actual needs.

[0162] like Figure 29 As shown, the rotating member 60 rotates by receiving power transmitted from the transmission assembly, the first abutting protrusion 601 abuts against the trigger part 72 and is in the second position, the light-emitting member 55 is in the circuit path, the light-emitting member 55 receives electrical energy released by the power supply member 54 and emits light, and the light source detection member 201 detects the light source.

[0163] When the trigger part 72 is located at the interval between the first abutting protrusion 601 and the third abutting protrusion 603, the trigger part 72 is located in the first position under the action of the first elastic member 720, and the circuit where the light-emitting member 55 is located is disconnected.

[0164] When the first abutting protrusion 601, the second abutting protrusion 602 and the third abutting protrusion 603 abut against the triggering part 72, the triggering part 72 is in the second position and the circuit is open; when the triggering part 72 is located at the interval under the action of the first elastic member 720 (i.e., in the second position), the circuit is closed.

[0165] It is known that the duration of the light-emitting element 55 can be determined by the arc length of the abutment protrusion, the interval of the light-emitting element 55 can be determined by the interval between the abutment protrusions, the number of times the light-emitting element 55 emits light can be determined by the number of abutment protrusions, and the speed at which the light-emitting element 55 emits light can be determined by the moving speed of the trigger part 72 (i.e., the degree of inclination of the abutment slope).

[0166] In this embodiment, multiple abutting protrusions sequentially abut against the trigger portion 72 and disengage from the trigger portion 72 to complete the circuit's opening and closing, thereby causing the light-emitting element 55 to emit light and extinguish multiple times, thus meeting the needs of the image forming apparatus.

[0167] like Figure 27 As shown, in this embodiment, the light-emitting element 55 is located on an integrated plate 550, and the integrated plate 550 is connected to the connector 53.

[0168] In another embodiment, the trigger portion 72 moves in a swinging manner after being abutted by the abutting protrusion, thereby opening up the circuit path where the light-emitting element 55 is located.

[0169] like Figure 30 As shown, in other embodiments, the trigger portion 72 does not directly contact the abutment protrusion. An intermediate member 73 is also provided on the switch member 71, and the trigger portion 72 is located between the intermediate member 73 and the abutment protrusion. The intermediate member 73 moves due to the abutment protrusion and drives the trigger portion 72 to move. The intermediate member 73 is plate-shaped, with one end fixedly connected to the main body of the switch member 71, and the other end provided with an abutment protrusion 730. The abutment protrusion abuts against the abutment protrusion 730 to cause the intermediate member 73 to swing, thereby causing the intermediate member 73 to drive the trigger portion 72 to move in a first direction toward the second end 12.

[0170] In this embodiment, the switching element 71 is a micro switch.

[0171] Example 8:

[0172] Unless otherwise specified, the structure of the developing cartridge 1 in this embodiment is the same as that in Embodiment 7. The difference between this embodiment and Embodiment 7 is that the structure of the component being tested is different.

[0173] like Figures 31-37 As shown, the component being detected in this embodiment includes a control unit 70, a rotating component 60, a switching component 71, a connecting component 53, a power supply component, and a light-emitting component 55. The rotating component 60 controls whether the circuit containing the light-emitting component 55 is conductive by controlling the closing and opening of the switching component 71. The switching component 71 includes a first terminal 712, a second terminal 713, and a trigger part 72. The first terminal 712 and the second terminal 713 are respectively connected to the control unit 70 through the connecting component 53.

[0174] The control unit 70 is preferably an integrated circuit board, i.e., an IC chip, which stores information such as the number of times the light-emitting element 55 emits light and the duration of light emission. Within a predetermined time, the control unit 70 controls the light-emitting element 55 to emit light and determines the number of times and the duration of light emission. That is, in this embodiment, the number of times the light-emitting element 55 emits light and the duration of light emission are not controlled by the number of times the rotating member 60 abuts against the switching member 71. In this embodiment, only one abutting protrusion may be provided, or only the end face of the rotating member 60 abuts against the switching member 71. In one embodiment, the rotating member 60 can move in the first direction and abut against the switching member 71 with its end face. In this embodiment, the light-emitting element 55 is disposed on the control unit 70 and electrically connected to the control unit 70 by means of welding or plugging. Furthermore, the light-emitting element 55 is located on the upper end face of the control unit 70 facing upward in the third direction, and is located on the side of the control unit 70 away from the first end 11 in the first direction and on the side away from the developing roller 131 in the second direction, that is, the light-emitting element 55 is located at the left rear position of the control unit 70. In the second direction, the distance L1 between the light-emitting element 55 and the rotation axis of the developing roller 131 is between 50 mm and 75 mm, and is preferably 62.5 mm in this embodiment. In the first direction, the electrode 102 is at least partially closer to the first end 11 than the light-emitting element 55.

[0175] When the developing cartridge 1 is installed in the image forming apparatus, in the second direction, the light source detection device 201 in the image forming apparatus is located in front of the light-emitting element 55. Therefore, the light emission direction X of the light-emitting element 55 (i.e., the main direction of the light emitted by the light-emitting element 55) intersects with the second direction and the third direction. In this embodiment, the included angle A1 between X and the second direction is 20° to 80°, and preferably 63°. In some embodiments, the light emission direction of the light-emitting element 55 can be directly parallel to the third direction, or the light-emitting element 55 can be moved forward to directly below or in front of the light source detection device 201. The light source can be transmitted to the light source detection device. That is, the angle A1 can vary depending on the size of L1. This embodiment does not impose a specific limitation.

[0176] The control unit 70 also includes a writing unit 701, a first connection port 702, a storage module 703, and a control module. The writing unit 701 and the first connection port 702 are both located on the same end face of the control unit 70 as the light-emitting element 55. The writing unit 701 has multiple metal surfaces and is used to contact external components to input information such as the number of times the light-emitting element 55 emits light and the duration of light emission into the control unit 70. The storage module 703 is used to store the program written through the writing unit 701 and to send the program out within a predetermined time. The storage module typically uses a flash memory chip or an EEPROM (Electrically Erasable Programmable Read-Only Memory). The control module executes the program and outputs electrical signals to control the light-emitting element to emit or extinguish light. The control module can be a microcontroller (MCU) or a programmable logic controller (PLC). The connector 53 is fixed by a first plug-in member 74, which is inserted into the first connection port 702 to electrically connect the control unit 70 to the switch member 71. In this embodiment, the control unit 70 can be considered a second storage medium different from the storage medium 101.

[0177] In this embodiment, the power supply component is electrically connected to the control unit 70 via electrical contact. The power supply component is preferably a button battery. In this embodiment, the power supply component includes a first power supply component 751 and a second power supply component 752 with a specification of 1.5V. In some embodiments, only a single 3V power supply component may be provided. The first power supply component 751 and the second power supply component 752 are electrically connected to the lower end face of the control unit 70 in a third-party upward direction to transfer electrical energy. That is, in this embodiment, the light-emitting element 55 and the power supply component are located on different end faces of the control unit 70 in a third-party upward direction. To prevent the power supply component from losing contact with the control unit 70, a limiting component is also provided. The limiting component is fixedly connected to the control unit 70 by welding or adhesive, and the power supply component is located between the limiting component and the lower end face to be limited.

[0178] In this embodiment, the limiting components include a first limiting component 753 and a second limiting component 754, which respectively limit the first power supply component 751 and the second power supply component 752. The limiting components are preferably steel sheets. The positive terminal of the power supply component is in contact with the lower end face of the control unit 70, and the negative terminal is in contact with the limiting component.

[0179] The control unit 70 is also equipped with other electronic components such as resistors, capacitors and transistors located on the lower end face to form a complete electronic system. This embodiment does not limit the specific location of each electronic component, and can be set according to actual needs.

[0180] A mounting member 58 is also provided at the second end 12. The mounting member 58 supports the control unit 70 and is connected to the control unit 70 by a snap-fit ​​mechanism. The mounting member 58 covers at least the upper surface of the control unit 70 to protect it. The mounting member 58 has an exposure hole 581 to expose the light-emitting element 55 so that the light emitted by the light-emitting element 55 can be detected by the light source detection device. After the mounting member 58 and the control unit 70 are snapped together, the mounting member 58 is fixedly connected to the second cover 121 by a snap-fit ​​or screws, or it can be fixedly connected to the housing 10.

[0181] In this embodiment, the connector 53 is at least partially located at the fourth end 14. That is, the connector 53 is connected to the switch 71, extends in the second direction, bends, and extends to the left in the first direction to the second end 12, and then is electrically connected to the control unit 70. This structure can improve the wiring of the connector and hide the connector 53 in the fourth end 14 to prevent the connector 53 from being interfered with by external components. A receiving portion can be provided at the fourth end 14 to accommodate the connector 53, or a mounting buckle can be provided to support the connector 53.

[0182] When the rotating member 60 rotates due to the power transmitted from the driving unit 40, it abuts against the switch member 71, keeping it in a closed state. The light-emitting element 55 illuminates and extinguishes under the control of the control unit 70, enabling the light source detection device to detect the light source and generate a signal. When the rotating member 60 stops rotating, it disengages from the switch member 71, the switch opens, the control unit 70 stops issuing commands to the light-emitting element 55, and the light-emitting element 55 extinguishes. In this embodiment, the rotating member 60 acts as the detected element, causing the switch member 71 to close so that the control unit 70 can issue commands.

[0183] In one embodiment, the rotating member 60 may be in constant contact with the switching member 71, meaning that the switching member 71 does not need to be disconnected again after it is turned off. The command issued by the control unit 70 will only cause the light-emitting member 55 to change between emitting light and turning off within a certain period of time. The closing of the switching member 71 is only to transmit a signal to the control unit 70 to start issuing a command.

[0184] As can be seen, in this embodiment, the control unit 70 can issue commands to the light-emitting element 55 multiple times. That is, when the rotating element 60 is made to mesh with the stirring gear 44 again to receive power and rotate, and the rotating element 60 triggers the switch element 71 again, the control unit 70 can issue commands to the light-emitting element 55 again.

[0185] like Figure 38As shown, in this embodiment, a stirring rack is not provided. The bottom wall 161 of the cartridge 10 is inclined relative to the second direction. The bottom wall 161 extends forward in the second direction and upward and downward in the third direction. There is an angle A2 between the bottom wall 161 and the second direction. The size of the angle A2 is 20° to 70°. In this embodiment, A2 is preferably 46°, but it can also be 35°. Under the influence of gravity, the developer in the cartridge 10 flows along the extension direction of the bottom wall 161, that is, it flows towards the developing roller 131 and the powder feeding roller. This structure can ensure that the developing roller 131 and the powder feeding roller can stably adsorb the developer even without a stirring rack. A reinforcing column 108 is also provided inside the cartridge 10. The reinforcing column 108 extends upward in the third direction and is located between the two ends of the cover of the cartridge 10 in the second direction.

[0186] like Figure 37 and Figure 38 As shown, a powder filling port 122 is also provided at the second end 12. The developer 122 is filled into the cartridge 10 through the powder filling port 122. In the third direction, the bottom wall 161 is at least partially located below the powder filling port 122. In the second direction, the powder filling port 122 is located between the light-emitting element 55 and the developing roller 131, and between the rotating element 60 and the driving part 40. Viewed from the first direction, the reinforcing column 108 at least partially overlaps with the powder filling port 122.

[0187] like Figure 38 As shown, the developing cartridge 1 also includes a cover plate 163 and a storage medium 101. The cover plate 163 extends in a first direction and is fixedly disposed at the sixth end 16 by means of a snap or screw. The cover plate 163 is provided with a mounting portion 1631 for mounting the storage medium 101, which extends in the first direction and is located at the first end 11.

[0188] The developing cartridge 1 also includes a bearing 103 and a connecting plate 104 mounted on the second end 12. The bearing 103 is located at the front end of the cartridge body 10 in the second direction, and the second cover 121 is located at the rear end of the cartridge body 10 in the second direction. The connecting plate 104 is mounted on the outer surface of the second cover 121 and the bearing 103. The rear end of the bearing 103 and the front end of the second cover 121 are fixed to the cartridge body 10 by the connecting plate 104. The front end of the bearing 103 is fixedly connected to the cartridge body 10 by a snap fastener, and the rear end of the second cover 121 is fixedly connected to the cartridge body 10 by a snap fastener or screws. The front end of the connecting plate 104 fixes the rear end of the bearing 103 to the cartridge body 10 by screws, and the rear end of the connecting plate 104 fixes the rear end of the front end of the second cover 121 to the cartridge body 10 by screws.

[0189] like Figure 35 and Figure 36As shown, the casing 10 of the developing cartridge 1 includes an upper cover 10a and a lower cover 10b, which are welded together to form a cavity for containing developer. A cover plate 163 is mounted on the bottom surface of the lower cover 10b and can be connected by means of snaps or screws.

[0190] The casing 10 of the developing cartridge 1 also includes a protective cover 10c, which extends in a first direction. The upper cover 10a has a receiving portion 10a1 at its rear end in a second direction for receiving the connector 53, the receiving portion 10a1 being recessed downward relative to the upper surface of the upper cover 10a. The protective cover 10c is mounted on the receiving portion 10a1 to protect the connector 53.

[0191] One end of the protective cover 10c is provided with a protective part 10c1 for protecting the switch 71. After the protective cover 10c is installed on the upper cover 10a, the protective part 10c1 covers the switch 71 to protect the switch 71 from damage.

[0192] Example 9:

[0193] Unless otherwise specified, the structure of the developing cartridge 1 in this embodiment is the same as that in Embodiment 8, but the structure of the switching element in this embodiment is different from that in Embodiment 8.

[0194] like Figure 39 and Figure 40 As shown, in this embodiment, the switching element is the storage medium 101. One end of the connector 53 is electrically connected to the control unit 70, and the other end is electrically connected to the storage medium 101. When the developing cartridge 1 is installed in the image forming apparatus, and the electrical contact surface of the storage medium 101 makes electrical contact with the electrical contacts in the image forming apparatus, the control unit 70 receives a signal transmitted by the storage medium 101 through the connector 53. This signal causes the control unit 70 to issue a command to control the light-emitting element 55 to light up and turn off. That is, in this embodiment, the function of the switching element is no longer to determine the conduction and disconnection of the circuit where the light-emitting element 55 is located, but to send a signal to the control unit 70 to start outputting a command. The circuit where the light-emitting element 55 is located is always in the conducting state. The command issued by the control unit 70 causes the light-emitting element 55 to change between light-emitting and off for a period of time, rather than being in a constant alternation between light-emitting and off state. The developing cartridge 1 is provided with a second plug-in component 742. One end of the connector 53 is connected to the first plug-in component 74, and the other end is connected to the second plug-in component 742. The storage medium 101 is provided with a second connection port 1011. The second plug-in member 742 is inserted into the second connection port 1011 so that the storage medium 101 is electrically connected to the connector 53, thereby making the storage medium 101 electrically connected to the control unit 70.

[0195] In this embodiment, the connector 53 is at least partially located at the sixth end 16 (i.e., the bottom) of the housing 10, and extends upward from the sixth end 16 to connect with the control unit 70. A first receiving groove extending in a first direction may be provided at the sixth end 16, and a second receiving groove extending upward in a third direction may be provided at the second end 12 to mount the connector 53.

[0196] Electrode 102 can also be used as a signal source to trigger control unit 70. After the electrode is energized, an electrical signal is released to control unit 70 through connector 53. After the control unit 70 receives the electrical signal, it begins to control the lighting of light-emitting element 55.

[0197] A step-down unit can also be provided between the electrode 102 and the connector 53. The step-down unit reduces the external power received by the electrode 102 to the power that is adapted to the control unit 70.

[0198] The cover plate 163 covers at least part of the connector 53 to protect the portion of the connector 53 located at the sixth end 16.

[0199] In this embodiment, a reset part can also be provided on the control unit 70. The reset part is preferably a metal surface. When the control unit 70 needs to issue a command to the light-emitting element 55 again, the metal part can be used to contact the reset part and the writing part 701 at the same time. Even if the two are electrically connected, the control unit 70 can be reset.

[0200] In this embodiment, the storage medium 101 can also be disposed on the cover plate 163.

[0201] A rib 162 is also provided at the sixth end 16. The rib 162 is used to strengthen the strength of the box body 10. The rib 162 is also covered by the cover plate 163.

[0202] This embodiment simplifies the structure of the component being tested compared to the above embodiments, and only requires the drive unit 40, the developing gear 41, and the powder feeding gear 42, further simplifying the structure and cost of the developing cartridge 1.

[0203] Example 10:

[0204] Unless otherwise specified, the structure of the developing cartridge 1 in this embodiment is the same as that in Embodiment 8, but the structure of the switching element in this embodiment is different from that in Embodiment 8.

[0205] like Figures 41-43 As shown, in this embodiment, the switch 63 is disposed at the fourth end 14, preferably close to the second end 12 in the first direction, which can save the length of the connector 55. The developing cartridge 1 is also provided with a slider 66, which can slide relative to the cartridge body 10 in the second direction. In the second direction, the slider 66 is further away from the developing roller 131 than the switch 71. The slider 66 is used to abut against the hair-triggering part 73 so that the switch 61 is in the closed state.

[0206] The housing 10 has a support protrusion 109 extending upward in a third direction. The support protrusion 109 is columnar and has a movable support slider 66. The support protrusion 109 includes a through hole extending in a second direction, and the slider 66 is inserted into the through hole for slidable connection with the support protrusion 109. A second elastic member 661 is provided between the support protrusion 208 and the slider 66. Preferably, the second elastic member 661 is a compression spring, and the elastic member 66 is used to prevent the slider 66 from sliding forward in the second direction.

[0207] When the developing cartridge 1 is installed into the image forming apparatus, but the cover 202 of the image forming apparatus is not closed, the switch 71 is in the open state, and the control unit 70 cannot issue a command to make the light-emitting element 55 emit light. As the cover 202 begins to close gradually, the cover 202 abuts against one end of the slider 66, causing the slider 66 to overcome the elastic force of the second elastic member 661 and slide forward in the second direction. The other end of the slider 66 abuts against the emitting part 73, causing the switch 71 to close. At this time, the control unit 70 issues a command to make the light-emitting element 55 switch between emitting light and being off within a predetermined time.

[0208] Example 11:

[0209] Unless otherwise specified, the structure of the developing cartridge 1 in this embodiment is the same as that in Embodiment 8, but the structure of the switching element in this embodiment is different from that in Embodiment 8.

[0210] like Figure 44 and Figure 45 As shown, in this embodiment, the switch is an insulating member 76, which is preferably an insulating strip. The insulating member 76 extends in the first direction. One end of the insulating strip 76 is fixedly connected to the rotating member 60, and the other end is located between the lower end face of the power supply member and the control unit 70 to isolate the two and prevent them from being electrically connected.

[0211] The rotating member 60 is provided with a connecting protrusion 604, and the insulating member 76 is provided with a hole. The hole and the connecting protrusion 604 are engaged to fix the two together. When the rotating member 60 receives the power transmitted by the driving unit 40 and rotates, the rotating member 60 drives the insulating member 76 to move as a whole, thereby causing the part of the insulating member 76 located at the lower end face of the power supply unit and the control unit 70 to be pulled out from between the two. The power supply unit and the control unit 70 are electrically connected, and the control unit 70 causes the light-emitting member 55 to emit light.

[0212] At the fourth end 14, a mounting groove or mounting buckle may be provided to support the insulating component 76.

[0213] In one embodiment, the insulating element 76 may also be manually removed between the lower end face of the power supply element and the control unit 70.

[0214] The purpose of providing the insulating element 76 in this embodiment is to prevent the power supply from being consumed when the developing cartridge 1 is not installed in the image forming apparatus.

[0215] Example 12:

[0216] Unless otherwise specified, the structure of the developing cartridge 1 in this embodiment is the same as that in Embodiment 8. The difference between this embodiment and Embodiment 8 lies in the structure of the transmission assembly.

[0217] like Figures 46-49 As shown, in this embodiment, the transmission assembly only includes a drive unit 40, a developing gear 41, and a powder feeding gear 42. The meshing part 600 of the rotating member 60 directly meshes with the drive gear 401 to receive power and rotate, and disengages from the drive gear 401 after rotation and no longer rotates. This structure simplifies the structure of the first end 11, thereby reducing the cost of the developing cartridge 1. Correspondingly, in this embodiment, the switch member 71 that contacts the rotating member 60 is also disposed adjacent to the drive unit 40, and the connecting member 53 extends from the first end 11 to the second end 12 through the sixth end 16, and the connecting member 53 is covered by the cover plate 163.

[0218] In addition to the abutting protrusion 605, the rotating component 60 is also provided with a limiting protrusion 606. The first cover 111 is provided with a corresponding limiting protrusion 1110. The limiting protrusion 606 contacts the limiting protrusion 1110. When the rotating component 60 is not rotating or after rotation, the limiting protrusion 1110 prevents the rotating component 60 from shaking.

[0219] The powder filling port 122 is located at the first end 11, and when viewed from the first direction, the powder filling port 122 does not overlap with the first protective cover 111.

[0220] The developing cartridge 1 includes a first pushing part 1111 located at a first end 11 and a second pushing part 1215 located at a second end 12. The first pushing part 1111 and the second pushing part 1215 are used to receive the pushing force applied by the drum assembly to ensure close contact between the developing roller 131 and the photosensitive drum. In this embodiment, the first pushing part 1111 is preferably located at the rear end of the first cover 111, and the second pushing part 1215 is located at the rear end of the second cover 121. In a first direction, a handle 141 is located between the first pushing part 1111 and the second pushing part 1215, and in the first direction, the handle 141 is closer to the developing roller 131 than the first pushing part 1111 and the second pushing part 1215.

[0221] In this embodiment, in the second direction, the rear wall 140 of the housing 10 (i.e., the end wall of the fourth end 14) is closer to the rotation axis of the drive unit 40 than the first pushing part 1111. A first distance L1 exists between the rotation axis of the drive unit 40 and the rear wall 140 in the second direction. The magnitude of the first distance L1 is 40mm to 55mm, and in this embodiment, the first distance L1 is preferably 48mm. A second distance L2 exists between the rotation axis of the developing roller 131 and the rear wall 140 in the second direction. The magnitude of the second distance L2 is 50mm to 65mm, and in this embodiment, it is preferably 58mm. The extending direction of the rear wall 140 can be inclined relative to a third direction (calculated by taking the farthest part as the first distance L1) or parallel to a third direction.

[0222] The structures described in the above embodiments can be used in combination or individually.

[0223] In summary, the above description is merely a preferred embodiment of this application and is not intended to limit the scope of this application. Based on the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this application. The technical scope of this application is not limited to the content of the specification; all equivalent variations and modifications of the shape, structure, features, and spirit described in the claims of this application should be included within the scope of the claims.

Claims

1. A developing cartridge, characterized in that, include: The box body has a first end and a second end that are arranged opposite each other in a first direction, a third end and a fourth end that are arranged opposite each other in a second direction, and a fifth end and a sixth end that are arranged opposite each other in a third direction. The first direction, the second direction and the third direction intersect each other. A developing roller, rotating about a first axis extending in a first direction, is located at the third end; An electrode, located at the second end, receives external electrical energy; The drive unit, which receives external power and rotates, is located at the first end; The light-emitting element is closer to the fourth end relative to the developing roller in the second direction; The circuit is electrically connected to the light-emitting element, and the light-emitting element receives the electrical signal from the circuit and emits a light signal. The abutment is located at the second end.

2. A developing cartridge according to claim 1, characterized in that, It also includes a test component that is closer to the first end than the second end. The test component moves according to the rotation of the drive unit, thereby controlling the circuit's on and off states.

3. A developing cartridge according to claim 2, characterized in that, The circuit includes a power supply component and a switching component. The power supply component and the light-emitting component are electrically connected. The detected component drives the switching component to move between a conducting position and a disconnected position. When the switching component is in the conducting position, a circuit path is formed between the power supply component and the switching component. When the switch is in the open position, an open circuit is formed between the power supply and the switch.

4. A developing cartridge according to claim 3, characterized in that, The circuit also includes a connector that is electrically connected to the power supply component, the light-emitting component, and the switch component.

5. A developing cartridge according to claim 4, characterized in that, The connector is a steel sheet or a wire.

6. A developing cartridge according to claim 4, characterized in that, The tested component is provided with a conductive trigger part, which is the switch component. The connector includes a first conductive contact and a second conductive contact, and the trigger part is located between the first conductive contact and the second conductive contact.

7. A developing cartridge according to claim 6, characterized in that, The triggering part includes a first triggering part and a second triggering part arranged radially along the rotating component. The first triggering part is an annular shape extending along the rotation direction of the rotating component and contacts the first conductive contact. The second triggering part includes conductive blocks made of conductive material arranged at intervals along the rotation direction of the rotating component, with spacers made of insulating material between adjacent conductive blocks. When the switching component is in the on position, the second conductive contact contacts the conductive block; when the switching component is in the off position, the second conductive contact contacts the spacer.

8. A developing cartridge according to claim 2, characterized in that, The component being tested is a rotating component, which can directly or indirectly engage with the drive unit.

9. A developing cartridge according to claim 8, characterized in that, The object being tested can rotate about an axis extending along the third direction or the first direction.

10. A developing cartridge according to claim 9, characterized in that, It also includes a second idler wheel, which has a first toothed portion. The tested component has a second toothed portion that meshes with the first toothed portion. The first toothed portion or the second toothed portion has a missing toothed portion.

11. A developing cartridge according to claim 10, characterized in that, The tested component includes a trigger portion for driving a switch component. The trigger portion is a protrusion on one end face along the axis and is an arc shape extending about the rotation direction of the tested component.

12. A developing cartridge according to claim 3, characterized in that, The switch is closer to the first end than the second end.

13. A developing cartridge according to claim 12, characterized in that, The switching device is a micro switch, which includes a trigger part. The detected device is provided with an abutment protrusion, which drives the trigger part of the micro switch to move between the on position and the off position.

14. A developing cartridge according to claim 12, characterized in that, The switching device includes a switching part, and the circuit includes a first terminal and a second terminal. The first terminal and the second terminal are electrically connected to the power supply device or the light-emitting device through a connector. The device being detected is provided with a trigger part, and the trigger part drives the switching part to move between a conducting position and a disconnected position.

15. A developing cartridge according to claim 14, characterized in that, The switch is a swinging component, which is rotatably mounted on the housing. One end of the swinging component is provided with the switch part that can be electrically connected to the first terminal and the second terminal, and the other end is provided with a triggered end that cooperates with the triggering part.

16. A developing cartridge according to claim 3, characterized in that, The power supply component is a battery, or the electrode, or a storage medium disposed on the housing.

17. A developing cartridge according to claim 3, characterized in that, The circuit includes a control unit, a power supply component and a switch component connected to the power supply terminal of the control unit, and an output terminal of the control unit connected to the light-emitting component. When the switch component is in the ON position, a circuit path is formed between the power supply component, the switch component and the control unit, and the control unit outputs an electrical signal to control the light-emitting component to light up or turn off. When the switch component is in the OFF position, an open circuit is formed between the power supply component, the switch component and the control unit.

18. A developing cartridge according to claim 3, characterized in that, The circuit includes a storage medium or the electrode, a power supply component, and a control unit. The storage medium or the electrode is connected to the signal input terminal of the control unit, and the output terminal of the control unit is connected to the light-emitting component. When the developing cartridge is mounted on the image forming apparatus, the control unit receives a control signal sent by the storage medium or the electrode, and outputs an electrical signal to control the light-emitting element to emit or extinguish light according to the control signal.

19. A developing cartridge according to claim 17 or 18, characterized in that, The control unit includes a circuit board, on which a control module and a storage module are provided. The storage module is used to store a program for controlling the light-emitting element to light up and turn off. The control module executes the program and outputs an electrical signal to control the light-emitting element to light up or turn off.

20. A developing cartridge according to claim 19, characterized in that, The circuit board has an upper surface facing away from the housing and a lower surface facing the housing. The light-emitting element is disposed on the upper surface, and the power supply element is disposed on the lower surface.

21. A developing cartridge according to claim 19, characterized in that, The control unit is located at the second end and is closer to the fourth end relative to the electrode in the second direction.

22. A developing cartridge according to claim 19, characterized in that, The light-emitting element is located on the side of the circuit board away from the first end in a first direction, and on the side away from the developing roller in a second direction.

23. A developing cartridge according to claim 3, characterized in that, The light-emitting element and the switch element are connected by a connector. The fourth end is provided with a receiving part to accommodate the connector. The box body also includes a protective cover, which is installed on the receiving part.

24. A developing cartridge according to claim 18, characterized in that, It also includes a cover plate that extends along a first direction and is fixed at the sixth end. The light-emitting element and the switching element are connected by a connector located between the cover plate and the housing.

25. A developing cartridge according to claim 24, characterized in that, The storage medium is mounted on the cover plate.

26. A developing cartridge according to claim 25, characterized in that, The storage medium includes an electrical contact surface located at the first end and the third end.

27. A developing cartridge according to claim 17 or 18, characterized in that, It also includes a mounting component, through which the control unit and / or the light-emitting element are mounted on the housing. The mounting component is provided with an exposure hole for the light-emitting element to emit light signals.

28. A developing cartridge according to claim 19, characterized in that, The circuit board has an exposed first contact and a second contact, which are connected to the control module.

29. A developing cartridge according to claim 1, characterized in that, The circuit includes a power supply component, a switch component, a slider component, and a control unit. The power supply component and the switch component are connected to the power supply terminal of the control unit, and the output terminal of the control unit is connected to the light-emitting component. The slider component is located on the housing and can move between a conducting position and a disconnected position. When the developing cartridge is installed on the image forming apparatus and the door of the image forming apparatus is not closed, the sliding member is in the disconnected position, and an open circuit is formed between the power supply unit, the switch unit, and the control unit. During the closing process of the door, the sliding member is driven to move to the conducting position, and a circuit path is formed between the power supply unit, the switch unit, and the control unit. The control unit outputs an electrical signal to control the light-emitting element to light up or turn off.

30. A developing cartridge according to claim 1, characterized in that, The light-emitting direction of the light-emitting element is tilted towards the third end relative to the third direction.

31. A developing cartridge according to claim 30, characterized in that, The angle between the light-emitting direction of the light-emitting element and the second direction is 20° to 80°.

32. A developing cartridge according to claim 1, characterized in that, The distance between the light-emitting element and the first axis is 50mm to 75mm.

33. A developing cartridge according to claim 1, characterized in that, It also includes a light guide that guides the light emitted by the light-emitting element to the light source detection device of the image forming apparatus.

34. A developing cartridge according to claim 2, characterized in that, The object being tested is closer to the developing roller than the light-emitting element in the second direction.

Images