Developing box and processing box

Abstract

The utility model provides a developing box and a processing box, the developing box comprises a box body assembly, a developing roller and a chip mechanism, the chip mechanism is provided with an electric contact surface, and the electric contact surface is fixed on the top side of the box body assembly; the developing box can move towards an electric contact of the imaging equipment under the action of external force, so that the electric contact surface is propped against the electric contact of the imaging equipment, the developing roller is propped against a photosensitive drum of the photosensitive component along a first direction, the box body component is provided with a locking rib, and the locking rib protrudes out of one side of the box body component along the first direction; the top side of the locking rib is provided with a matching surface used for being matched with a locking piece of the photosensitive assembly in a locking mode, and the distance between the matching surface and the electric contact surface is 26-32 mm in the top-bottom direction. According to the developing box, the distance between the matching surface and the electric contact surface is set, so that stable contact between the electric contact surface of the developing box and the electric contact can be facilitated.

Description

Technical Field

[0001] This application relates to the field of electrophotographic imaging, and more particularly to a developing cartridge and a processing cartridge. Background Technology

[0002] Processing cartridges are widely used in electrophotographic imaging equipment such as laser printers, copiers, and fax machines. A processing cartridge includes a developing cartridge and a photosensitive assembly. The developing cartridge is installed within the photosensitive assembly, allowing it to work in conjunction with other components within the drum assembly to complete the imaging process. The developing cartridge includes a developing roller, and the photosensitive assembly includes a photosensitive drum. During imaging, the developer carried by the developing roller is transferred to the photosensitive drum, developing the electrostatic latent image on the drum. Therefore, the developing cartridge is equipped with locking ribs that engage with locking elements on the photosensitive assembly to prevent the developing cartridge from detaching from the photosensitive assembly during installation.

[0003] The developing cartridge contains a chip for recording its information. The electrophotographic imaging device contains electrical contacts. When the developing cartridge is installed in the electrophotographic imaging device, the chip contacts and becomes electrically connected. The electrophotographic imaging device can then identify the developing cartridge information by reading the chip's information. In related technologies, to make the chip contact the electrical contacts, the developing cartridge needs to move relative to the photosensitive component. During this movement, the locking rib must maintain a locked engagement with the locking element. Therefore, the position of the locking rib relative to the chip significantly affects the stable connection between the developing cartridge and the electrical contacts. Utility Model Content

[0004] In view of this, embodiments of this application aim to provide a developing cartridge and a processing cartridge, wherein the distance between the mating surface and the electrical contact surface is set to facilitate stable contact between the electrical contact surface of the developing cartridge and the electrical contact.

[0005] This application provides a developing cartridge for mounting on a photosensitive element and forming a processing cartridge with the photosensitive element. The processing cartridge is mounted within an imaging device and includes:

[0006] Cartridge assembly for containing developer;

[0007] A developing roller, rotatably disposed within the cartridge assembly, is used to carry the developing agent;

[0008] The chip mechanism has an electrical contact surface, which is fixed to the top side of the housing assembly and is used to make separable electrical contact with the electrical contacts of the imaging device along the top-bottom direction.

[0009] The housing assembly is provided with a locking rib, which protrudes from one side of the housing assembly along a first direction, and the top side of the locking rib has a mating surface for locking with a locking member of the photosensitive assembly.

[0010] Along the top and bottom direction, the distance between the mating surface and the electrical contact surface is 26mm to 32mm. The developing cartridge can move toward the electrical contact of the imaging device under the action of external force, so that the electrical contact surface abuts against the electrical contact of the imaging device and the developing roller abuts against the photosensitive drum of the photosensitive component along the first direction.

[0011] Wherein, the first direction intersects with the top and bottom directions.

[0012] In some embodiments, with the electrical contact surface along the axial direction of the developing roller and at one end away from the developing roller as a reference line, the locking rib has a first end and a second end disposed along the axial direction of the developing roller, the distance between the first end and the reference line is 15mm to 21mm, and the distance between the second end and the reference line is 32mm to 38mm.

[0013] And / or, the thickness of the locking rib is 3.5mm to 5mm;

[0014] Wherein, the first direction intersects the axial direction of the developing roller, and the thickness direction of the locking rib intersects the axial direction of the developing roller and also intersects the first direction.

[0015] In some embodiments, the developing cartridge includes a force-receiving part fixed to the cartridge assembly. The force-receiving part and the locking rib are located on the same side of the cartridge assembly along a first direction. The force-receiving part is provided with a first abutting surface for abutting against the pushing component of the photosensitive assembly along the first direction. From the top side to the bottom side, the distance between the first abutting surface and the rotation axis of the developing roller is reduced so that the pushing force applied by the pushing component to the developing cartridge has at least a component along the top and bottom direction and a component along the first direction.

[0016] After the external force is removed, the developing cartridge can move along the top side under the pushing force of the pushing assembly until it abuts the electrical contact surface and the electrical contact of the imaging device, and then move along the first direction until the developing roller abuts the photosensitive drum of the photosensitive assembly along the first direction, wherein the first direction is perpendicular to the top and bottom direction.

[0017] In some implementations, the first contact surface is an inclined surface or an arc-shaped surface;

[0018] And / or, the first contact surface is a complete surface; or, the force-bearing part is provided with an avoidance notch, the avoidance notch passes through the first contact surface to divide the first contact surface into two non-connected parts, the avoidance notch is used to avoid local interference positions of the photosensitive component pushing the component.

[0019] In some embodiments, the housing assembly includes a housing, a first end cap, and a second end cap. The housing is used to store developer. The first end cap and the second end cap are connected to opposite sides of the housing along an axial direction. The developing roller is disposed within a space defined by the housing, the first end cap, and the second end cap. The chip mechanism is disposed on the side of the first end cap away from the second end cap along the axial direction.

[0020] The force-receiving part is connected to the first end cap and / or the second end cap; or, the force-receiving part is connected to the housing.

[0021] Wherein, the first direction intersects with the axial direction.

[0022] In some embodiments, there are two force-bearing parts, which are connected to opposite sides of the housing along the axial direction;

[0023] The force-bearing part and the housing are integral structures; or, the housing is provided with a slot on at least one side along the axial direction, the force-bearing part is provided with a locking block, and the locking block is inserted into the slot.

[0024] In some embodiments, the chip mechanism includes a first guide surface and a second guide surface disposed on opposite sides of the electrical contact surface along a first direction. The first guide surface and the second guide surface are positioned below the electrical contact surface. The first guide surface and the second guide surface are inclined surfaces or curved surfaces to avoid the electrical contacts of the imaging device.

[0025] In some embodiments, the developing roller includes a developing roller shaft and a developing layer, the developing layer being located radially outside the developing roller shaft, the developing layer being used to carry the developing agent and forming a conductive path with the power output component of the imaging device, and the developing roller shaft being a non-conductive component or the developing roller shaft being covered with an insulating layer.

[0026] In some embodiments, the developing cartridge includes a powder dispensing blade fixed to the cartridge assembly and in contact with the developing layer;

[0027] The powder ejector blade is electrically connected to the power output component of the imaging device and supplies power to the developing layer; or, the powder ejector blade is electrically connected to the conductive structure of the photosensitive component and supplies power to the developing layer, wherein the conductive structure of the photosensitive component is electrically connected to the power output component of the imaging device.

[0028] An embodiment of this application provides a processing box, comprising:

[0029] A photosensitive assembly includes a drum housing, a photosensitive drum, and a push assembly, wherein the photosensitive drum is rotatably disposed within the drum housing, and the push assembly is slidably disposed within the drum housing;

[0030] And the developing cartridge described in any embodiment of this application;

[0031] The developing cartridge is detachably disposed on the drum housing, the drum housing is provided with a locking member, the locking member is provided with a locking space, the locking rib is disposed in the locking space, and is locked and engaged with the locking member through the mating surface;

[0032] When the developing cartridge is subjected to external force, the pushing assembly slides relative to the drum box and stores energy, and the locking member can rotate relative to the drum box. After the external force is removed, the pushing assembly applies a pushing force to the developing cartridge.

[0033] The developing cartridge provided in this application embodiment does not require the electrical contact surface to move relative to the developing cartridge. Instead, the developing cartridge as a whole drives the electrical contact surface to move, achieving cooperation with the electrical contacts and photosensitive components. This reduces structural restrictions on the chip mechanism, allowing for a simpler chip mechanism structure. Furthermore, the distance between the locking rib and the electrical contact surface along the top and bottom directions enables the developing cartridge to move within a suitable range, achieving a stable connection with the electrical contacts. The overall structure of the developing cartridge has high reliability, facilitating the acquisition of information from the developing cartridge by the imaging device. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of a developing cartridge according to an embodiment of this application;

[0035] Figure 2 for Figure 1 An exploded view of the structure shown.

[0036] Figure 3 This is a schematic diagram of the structure of a photosensitive component according to an embodiment of this application;

[0037] Figure 4 This is a schematic diagram of the structure of a processing box according to an embodiment of this application;

[0038] Figure 5 for Figure 4 A schematic diagram of the structure shown from another perspective;

[0039] Figure 6 for Figure 4 A schematic diagram of the structure shown from another perspective;

[0040] Figure 7 This is a schematic diagram of the structure of an imaging device according to an embodiment of this application, wherein the developing cartridge is subjected to external force but has not started to move;

[0041] Figure 8 for Figure 7 The diagram shows another state of the structure, in which the developing cartridge is subjected to external force and moves relative to the electrical contact under the external force, and the elastic element is compressed and contracts.

[0042] Figure 9 for Figure 8 The diagram shows another state of the structure, in which the external force is removed and the elastic element drives the developing cartridge to move until the electrical contact surface contacts the electrical contact and the photosensitive drum contacts the developing roller.

[0043] Figure 10 This is a schematic diagram of the structure of an imaging device according to another embodiment of this application, wherein the first contact surface is an arc-shaped surface.

[0044] Explanation of reference numerals in the attached figures

[0045] 1000 - Imaging equipment; 1000a - Mounting cavity; 100 - Processing box; 200 - Electrical contact; 201 - Protective cover;

[0046] 10-Developer cartridge; 11-Cartridge assembly; 11a-Positioning protrusion; 111-Housing shell; 111a-Slot; 112-First end cap; 113-Second end cap; 114-Locking rib; 114a-Mating surface; 12-Developer roller; 13-Chip mechanism; 13a-Electrical contact surface; 13b-First guide surface; 13c-Second guide surface; 14-Force-receiving part; 14a-First abutment surface; 14b-Avoidance notch; 141-Clamping block; 15-Powder discharge blade; 16-Handle; 17-Drive assembly;

[0047] 20-Photosensitive component; 21-Drum box; 21a-Positioning groove; 211-First sidewall; 212-Second sidewall; 22-Photosensitive drum; 23-Pushing component; 231-Pushing element; 231a-Second abutting surface; 232-Elastic element; 24-Locking element; 24a-Locking space. Detailed Implementation

[0048] 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.

[0049] The specific technical features described in the specific embodiments can be combined in any suitable manner without contradiction. For example, different combinations of specific technical features can form different embodiments and technical solutions. To avoid unnecessary repetition, the various possible combinations of the specific technical features in this application will not be described separately.

[0050] In the following description, the terms "first," "second," etc., are used merely to distinguish different objects and do not indicate that the objects have the sameness or relationship. It should be understood that the directional descriptions "above," "below," "outside," and "inside" refer to the orientation under normal use conditions, while "left" and "right" refer to the left and right directions shown in the corresponding diagrams, which may or may not be the left and right directions under normal use conditions.

[0051] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. "A plurality of" means two or more.

[0052] This application provides a developing cartridge 10 for mounting on a photosensitive component 20 and forming a processing cartridge 100 with the photosensitive component 20. The processing cartridge 100 is mounted on an imaging device 1000.

[0053] Understandably, the processing cartridge 100 is used in the imaging device 1000. The processing cartridge 100 can convert data from a computer into a visual image and print it onto paper through a developing process. The developing cartridge 10 can transfer developer to the photosensitive component 20, which is responsible for receiving and processing imaging data to achieve electrostatic latent image development.

[0054] For example, please refer to Figures 4 to 6 This application also provides a processing cartridge 100, which includes a photosensitive component 20 and a developing cartridge 10 in any embodiment of this application.

[0055] It is understood that imaging device 1000 refers to a device that forms an image on a recording material using an electrophotographic imaging method. Imaging device 1000 can be a copier, fax machine, printer (laser beam printer, LED printer, etc.), and corresponding multifunction printers, etc.

[0056] For example, please refer to Figures 7 to 10 The imaging device 1000 includes an electrical contact 200 and a processing box 100 in any embodiment of this application.

[0057] The imaging device 1000 is provided with a mounting cavity 1000a, and the processing cartridge 100 is disposed within the mounting cavity 1000a. That is to say, the processing cartridge 100 can be removed or installed from the mounting cavity 1000a to facilitate the maintenance and replacement of the developing cartridge 10 or the photosensitive assembly 20.

[0058] For example, the developing cartridge 10 and the photosensitive component 20 are detachably connected. Thus, when it is necessary to make electrical contact between the developing cartridge 10 and the electrical contact 200 of the imaging device 1000, the developing cartridge 10 and the photosensitive component 20 can be assembled together to form a processing cartridge 100, and then the processing cartridge 100 can be placed in the mounting cavity 1000a; alternatively, the developing cartridge 10 and the photosensitive component 20 can be installed separately in the mounting cavity 1000a, that is, the photosensitive component 20 can be installed in the mounting cavity 1000a first, and then the developing cartridge 10 can be installed in the mounting cavity 1000a and docked with the photosensitive component 20. Of course, the photosensitive component 20 can also be pre-formed in the mounting cavity 1000a, in which case the developing cartridge 10 can be directly installed in the mounting cavity 1000a in a detachable manner to dock with the electrical contact 200 and the photosensitive component 20.

[0059] For example, the processing cartridge 100 is detachably disposed in the mounting cavity 1000a, so that both the photosensitive component 20 and the developing cartridge 10 can be removed from the mounting cavity 1000a for easy maintenance and replacement.

[0060] Please see Figure 1 and Figure 2 The developing cartridge 10 includes a cartridge assembly 11, a developing roller 12, and a chip mechanism 13.

[0061] The housing assembly 11 is used to contain developer. Exemplarily, the developer may be toner.

[0062] The developing roller 12 is rotatably disposed within the cartridge assembly 11 and is used to carry the developer. That is, the developing roller 12 can rotate relative to the cartridge assembly 11, and the developer carried is supplied to the photosensitive element 20 by rotation.

[0063] The chip mechanism 13 is fixed to the housing assembly 11. The chip mechanism 13 has an electrical contact surface 13a, which is fixed to the top side of the housing assembly 11. The electrical contact surface 13a is used to make separable electrical contact with the electrical contact 200 of the imaging device 1000 along the top-bottom direction.

[0064] It is understood that the chip mechanism 13 is used to record information of the developing cartridge 10 and makes electrical contact with the electrical contacts 200 of the imaging device 1000 through the electrical contact surface 13a, thereby transmitting the information of the developing cartridge 10 to the imaging device 1000. The electrical contact surface 13a being fixed to the cartridge assembly 11 means that there is no relative movement between the electrical contact surface 13a and the cartridge assembly 11; they are relatively fixed. The chip mechanism 13 can be fixed entirely relative to the cartridge assembly 11, or only the electrical contact surface 13a can be fixed relative to the cartridge assembly 11; there is no limitation here, and the design can vary depending on the structure of the chip mechanism 13.

[0065] Please see Figures 6 to 9 The electrical contact 200 and the electrical contact surface 13a are detachably electrically connected along the top and bottom direction. That is, when the developing cartridge 10 needs to be repaired or replaced, the electrical contact surface 13a can be directly separated from the electrical contact 200 without the need for disconnection or other operations. The connection method is simple.

[0066] For example, the imaging device 1000 may be provided with a protective cover 201, and the electrical contact 200 is disposed inside the protective cover 201 to protect the electrical contact 200 and reduce the probability of damage to the electrical contact 200.

[0067] The housing assembly 11 is provided with a locking rib 114, which protrudes from one side of the housing assembly 11 along a first direction. The top side of the locking rib 114 has a mating surface 114a for locking with the locking member 24 of the photosensitive assembly 20.

[0068] The locking rib 114 engages with the locking member 24 of the photosensitive assembly 20 through the mating surface 114a. In other words, the locking member 24 can lock the locking rib 114, thus stably confining the developing cartridge 10 within the photosensitive assembly 20 and preventing the developing cartridge 10 from falling out of the photosensitive assembly 20.

[0069] Understandably, when it is necessary to electrically connect the developing cartridge 10 to the electrical contact 200 and to achieve the engagement of the developing roller 12 and the photosensitive drum 22, the developing cartridge 10 will inevitably move relative to the photosensitive assembly 20. Therefore, the engagement of the locking member 24 and the locking rib 114 reduces the probability of the developing cartridge 10 dislodging from the photosensitive assembly 20 during movement, increasing the installation stability of the developing cartridge 10. During the movement of the developing cartridge 10, the mating surface 114a remains in contact with the locking member 24.

[0070] Understandably, the locking rib 114 is located on the bottom side of the electrical contact surface 13a and is positioned away from the developing roller 12.

[0071] Please see Figure 5Along the top-bottom direction, the distance H between the mating surface 114a and the electrical contact surface 13a is 26mm (millimeter) to 32mm, that is, 26mm≤H≤32mm, for example, 26mm, 26.5mm, 27mm, 28mm, 28.4mm, 28.6mm, 29mm, 29.5mm, 29.8mm, 30mm, 30.5mm, 31mm, 32mm, etc.

[0072] The developing cartridge 10 can move toward the electrical contacts of the imaging device 1000 under the action of an external force, so that the electrical contact surface 13a abuts against the electrical contacts 200 of the imaging device 1000 and the developing roller 12 abuts against the photosensitive drum 22 of the photosensitive assembly 20 along a first direction, wherein the first direction intersects with the top and bottom direction.

[0073] It is understandable that the developing cartridge 10 may first dock with the photosensitive component 20 outside the imaging device 1000 to form a processing cartridge 100, and then enter the mounting cavity 1000a to cooperate with the electrical contact 200; or, it may cooperate with both the photosensitive component 20 and the electrical contact 200 simultaneously within the mounting cavity 1000a. In either case, before cooperating with the electrical contact 200, the locking rib 114 is already locked with the locking member 24 to ensure stable installation of the developing cartridge 10.

[0074] Thus, if the distance between the locking rib 114 and the electrical contact surface 13a along the top-bottom direction is small, the developing cartridge 10 cannot move upward or can only move upward a certain distance, thus preventing the electrical contact surface 13a from making electrical contact with the electrical contact 200, or resulting in unstable electrical contact. Specifically, the position of the locking member 24 on the photosensitive assembly 20 is fixed, and the distance that the locking member 24 can allow the locking rib 114 to move upward when locked in engagement with the locking rib 114 is also fixed. In this case, if the position of the locking rib 114 is too high, the electrical contact surface 13a cannot move to make stable contact with the electrical contact 200, affecting the imaging device 1000's acquisition of information from the developing cartridge 10.

[0075] If the distance between the locking rib 114 and the electrical contact surface 13a along the top-bottom direction is large, the developing cartridge 10 will move upward too far, causing damage to the electrical contact 200 or the electrical contact surface 13a.

[0076] Therefore, in this embodiment, the distance between the mating surface 114a and the electrical contact surface 13a is neither too large nor too small, which allows the developing cartridge 10 to move within a suitable range and maintain the stability of the electrical connection with the electrical contact 200, reducing damage to the electrical contact 200 or the electrical contact surface 13a. At the same time, the locking rib 114 can also maintain a stable fit with the locking member 24 of the photosensitive assembly 20.

[0077] Here, the external force can be the force exerted by the hand or the force applied by the tool.

[0078] Under the action of external force, the movement of the developing cartridge 10 enables the electrical contact surface 13a to abut against the electrical contact 200 of the imaging device 1000 and the developing roller 12 to abut against the photosensitive drum 22 of the photosensitive assembly 20 in the first direction. Here, the external force can be applied continuously to the developing cartridge 10 until the developing cartridge 10 is installed, or the external force can move the developing cartridge 10 to a certain position and then be withdrawn, and the installation of the developing cartridge 10 is completed by the cooperation force between the developing cartridge 10 and other structures such as the photosensitive assembly 20.

[0079] The developing cartridge 10 provided in this application embodiment does not require the electrical contact surface 13a to move relative to the developing cartridge 10. The electrical contact surface 13a is moved by the entire developing cartridge 10 to achieve cooperation with the electrical contact 200 and the photosensitive component 20. This reduces the structural restrictions on the chip mechanism 13, and the structure of the chip mechanism 13 can be relatively simple. At the same time, the distance between the locking rib 114 and the electrical contact surface 13a along the top and bottom direction can also make the developing cartridge 10 move within a suitable range to achieve a stable connection with the electrical contact 200. The overall structure of the developing cartridge 10 has high reliability, which makes it easy for the imaging device 1000 to obtain information from the developing cartridge 10.

[0080] In some embodiments, please refer to Figure 6 With reference line A, the locking rib 114 has a first end and a second end arranged along the axial direction of the developing roller 12, with the electrical contact surface 13a along the axial direction of the developing roller 12.

[0081] The distance L1 between the first end and the baseline A is 15mm to 21mm, that is, 15mm≤L1≤21mm, for example, 15mm, 15.5mm, 16mm, 17mm, 17.4mm, 17.6mm, 18mm, 18.5mm, 18.8mm, 19mm, 19.5mm, 20mm, 21mm, etc.

[0082] The distance L2 between the second end and the baseline A is 32mm to 38mm, that is, 32mm≤L2≤38mm, for example, 32mm, 32.5mm, 33mm, 34mm, 34.4mm, 34.6mm, 35mm, 35.5mm, 35.8mm, 36mm, 36.5mm, 37mm, 38mm, etc.

[0083] In this embodiment, the axial extension dimension of the locking rib 114 is set with reference to the baseline A of the electrical contact surface 13a. This makes it easy for the locking rib 114 to be in a suitable position and to be stably locked with the locking member 24 of the photosensitive component 20, so that it will not disengage from the locking member 24 when the developing cartridge 10 moves or is shaken, thereby increasing the installation stability of the developing cartridge 10.

[0084] In some embodiments, please refer to Figure 5 The thickness D of the locking rib 114 is 3.5mm to 5mm, that is, 4mm≤D≤5mm, for example, 3.5mm, 3.8mm, 4mm, 4.2mm, 4.3mm, 4.4mm, 4.5mm, 4.6mm, 4.7mm, 4.8mm, 5mm, etc.

[0085] In this embodiment, the thickness of the locking rib 114 is appropriate, so that it can move with the developing cartridge 10 when it is engaged with the locking member 24. It will not break due to being too thin, nor will it damage the locking member 24 due to being too thick.

[0086] The first direction intersects the axial direction of the developing roller 12, and the thickness direction of the locking rib 114 intersects the axial direction of the developing roller 12 and also intersects the first direction. This intersection can be an acute angle, an included angle, or a right angle; no limitation is made here. The thickness direction of the locking rib 114 can be parallel to the top and bottom directions, or at a small angle.

[0087] It is understandable that, taking the locking rib 114 as roughly a cuboid as an example, the thickness of the locking rib 114 is less than the width of the locking rib 114, and the width of the locking rib 114 is less than the length of the locking rib 114. The locking rib 114 can also be an irregular shape. In this case, the locking rib 114 can be fitted to create a cuboid that contains the irregular shape. The thickness of the locking rib 114 can be determined by the length direction, width direction and thickness direction of the cuboid.

[0088] In some embodiments, please refer to Figures 1 to 10 The developing cartridge 10 includes a force-receiving part 14, which is fixed to the cartridge assembly 11. That is, there is no relative movement between the force-receiving part 14 and the cartridge assembly 11; they are relatively fixed. For example, the force-receiving part 14 and the locking rib 114 are fixed to the same side of the cartridge assembly 11 along a first direction.

[0089] Please see Figures 7 to 10 The force-receiving part 14 is provided with a first abutting surface 14a, which is used to abut against the pushing component 23 of the photosensitive component 20 in a first direction. From the top side to the bottom side, the distance between the first abutting surface 14a and the rotation axis of the developing roller 12 decreases, so that the pushing force applied by the pushing component 23 to the developing cartridge 10 has at least a component force in the top-bottom direction and a component force in the first direction.

[0090] After the external force is removed, the developing cartridge 10 can move along the top side to the electrical contact surface 13a and abut against the electrical contact 200 of the imaging device 1000 under the pushing force of the pushing assembly 23, and move along the first direction to the developing roller 12 and abut against the photosensitive drum 22 of the photosensitive assembly 20 along the first direction.

[0091] It is understandable that the rotation axis of the developing roller 12 is parallel to the axial direction of the developing roller 12.

[0092] From the top to the bottom, the distance between the first contact surface 14a and the rotation axis of the developing roller 12 decreases. This decrease can be linear or abrupt, and is not limited here. For example, it decreases linearly, in which case the first contact surface 14a is roughly formed as a slope.

[0093] It is understandable that a slope refers to a surface with a certain angle of inclination. A slope can be an inclined plane or a curved surface, and there are no restrictions here.

[0094] For example, when it is necessary to make electrical contact between the electrical contact surface 13a and the electrical contact 200, an external force is applied to the developing cartridge 10 to push it into the mounting cavity 1000a of the imaging device 1000. As it gradually approaches the electrical contact 200, the developing cartridge 10 abuts against the structure (e.g., the protective cover 201) on which the electrical contact 200 is located, forming an abutting force. At this time, the developing cartridge 10 is subjected to the external force and the abutting force, which can be transmitted to the photosensitive assembly 20 through the force receiving part 14. The pushing component 23 moves away from the electrical contact 200 under the force. After the external force is removed, the pushing component 23 can apply a pushing force to the developing cartridge 10 through the first contact surface 14a. The pushing force includes a component force along the top and bottom direction and a component force along the first direction. In this way, the developing cartridge 10 can be pushed to move along the top and bottom direction and the first direction, thereby achieving contact with the electrical contact 200 in the top and bottom direction and contact with the photosensitive drum 22 in the first direction.

[0095] For example, the electrical contact 200 is disposed inside the protective cover 201. During the process of pushing into the mounting cavity 1000a, the electrical contact surface 13a is disposed on the bottom side of the electrical contact 200. Under the action of the pushing force, the developing cartridge 10 can move along the first direction to dock the developing roller 12 with the photosensitive drum 22, and the electrical contact surface 13a moves towards the top side to abut against the electrical contact 200. At the same time, under the action of the pushing assembly 23, the electrical contact surface 13a can maintain abutment against the electrical contact 200, and the developing roller 12 can also maintain abutment against the photosensitive drum 22, so as to achieve reliable docking.

[0096] In other words, in this application, the docking of the developing roller 12 and the photosensitive drum 22 and the docking of the electrical contact surface 13a and the electrical contact 200 can be achieved simultaneously by relying on the cooperation of the force-receiving part 14 of the developing cartridge 10 and the pushing component 23 of the photosensitive component 20. Throughout the process, there is no relative movement between the electrical contact surface 13a, the force-receiving part 14 and the cartridge assembly 11, and the structure is simple.

[0097] It is understandable that the push-pull component 23 is an existing structure on the photosensitive component 20.

[0098] Understandably, in related technologies, in order to make the chip contact the electrical contacts, a slide rail needs to be set on the developing cartridge to allow the chip to slide relative to the cartridge body so that the chip can make contact with the electrical contacts. However, this method has a complex structure, low contact stability between the chip and the electrical contacts, and is prone to damaging the chip.

[0099] In this embodiment, by providing the force-receiving part 14, during the process of docking the developing cartridge 10 with the electrical contact 200, the force-receiving part 14 and the pushing component 23 of the photosensitive component 20 can form a progressive force transmission. The pushing force applied by the pushing component 23 to the developing cartridge 10 includes at least a component force along the top and bottom direction and a component force along the first direction. At the same time, the docking of the developing roller 12 and the photosensitive drum 22 is realized, as well as the electrical contact surface 13a and the electrical contact 200 are electrically connected. The structure is simple, and there is no need to make the electrical contact surface 13a move relative to the cartridge assembly 11, nor is there a need to provide a structure for lifting the cartridge assembly 11 on the developing cartridge 10. During the installation process, the developing cartridge 10 can be docked as a whole, and there will be no relative movement between the components. The chip mechanism 13 has a low probability of being damaged.

[0100] The specific structure of the photosensitive element 20 is not limited.

[0101] For example, please refer to Figures 3 to 5 The photosensitive assembly 20 includes a drum housing 21, a photosensitive drum 22, and a push assembly 23. The photosensitive drum 22 is rotatably disposed within the drum housing 21, and the push assembly 23 is slidably disposed within the drum housing 21.

[0102] The developing cartridge 10 is detachably mounted on the drum cartridge 21. The drum cartridge 21 is provided with a locking member 24. The locking member 24 is provided with a locking space 24a. The locking rib 114 is provided in the locking space 24a and is locked and engaged with the locking member 24 through the mating surface 114a.

[0103] When the developing cartridge 10 is subjected to external force, the pushing assembly 23 slides and stores energy relative to the drum box 21, and the locking member 24 can rotate relative to the drum box 21. After the external force is removed, the pushing assembly 23 applies a pushing force to the developing cartridge 10.

[0104] For example, please refer to Figure 3 and Figure 4 The drum box 21 includes a first sidewall 211 and a second sidewall 212 disposed opposite to each other along the axial direction, the first sidewall 211 and the second sidewall 212 defining a space for mounting the developing cartridge 10.

[0105] At least one of the first sidewall 211 and the second sidewall 212 forms a positioning groove 21a along the first direction, and the box assembly 11 forms a positioning protrusion 11a, which cooperates with the positioning groove 21a.

[0106] In this embodiment, the positioning protrusion 11a and the positioning groove 21a are used to achieve docking and positioning of the developing cartridge 10 and the drum cartridge 21, so that the developing cartridge 10 can be installed correctly.

[0107] In some embodiments, the locking member 24 is rotatable about an axis relative to the first sidewall 211, wherein the axis is parallel to the axial direction.

[0108] The developing roller 12 abuts against the photosensitive drum 22 along the first direction, and the pushing assembly 23 is provided with a second abutting surface 231a, which abuts against the first abutting surface 14a along the first direction.

[0109] During the imaging process, the developing roller 12 abuts against the photosensitive drum 22 along the first direction, and the developing roller 12 contacts the photosensitive drum 22. The developing roller 12 supplies developer to the photosensitive drum 22 by rotating, so that the electrostatic latent image on the photosensitive drum 22 is developed.

[0110] The push assembly 23 is slidably disposed within the drum housing 21. That is, the push assembly 23 can slide relative to the drum housing 21. During the installation of the developing cartridge 10, the force receiving part 14 can transmit the external force and the abutting force formed by the contact with the structure (e.g., the protective cover 201) of the developing cartridge 10 to the push assembly 23, driving the push assembly 23 to slide. In this way, the developing cartridge 10 can smoothly enter the mounting cavity 1000a. After the developing cartridge 10 enters the mounting cavity 1000a, the user can release the force. At this time, the push assembly 23 can release the pushing force, which is transmitted to the force receiving part 14 through the first abutting surface 14a, thereby driving the developing cartridge 10 to move along the first direction and the top and bottom direction to complete the docking with the electrical contact 200 and the photosensitive drum 22.

[0111] For example, a guide rail may be provided inside the drum box 21 to facilitate the smooth movement of the push assembly 23 along a predetermined trajectory.

[0112] For example, please refer to Figure 1 and Figure 2 The developing cartridge 10 may be equipped with a handle 16, which is connected to the cartridge assembly 11. Users can install and remove the developing cartridge 10 by operating the handle 16.

[0113] It is understandable that the handle 16 can be a protrusion connected to the cartridge assembly 11, a rib provided on the surface of the cartridge assembly 11, or a groove formed in the cartridge assembly 11, as long as it enables the user to install and remove the developing cartridge 10 by operating the handle 16.

[0114] The first direction can be any direction; for example, the first direction can be... Figure 3The handle 16 can be positioned on the side of the cartridge assembly 11 away from the developing roller 12 along the first direction. Taking the position of the developing roller 12 as the front side as an example, if the handle 16 is positioned on the rear side of the developing roller 12, the developing cartridge 10 can be installed forward and removed or taken out backward along the first direction. The top and bottom directions are the same as the height direction of the imaging device 1000.

[0115] The second contact surface 231a is a surface on the pushing assembly 23 that is used to contact the first contact surface 14a of the force-receiving part 14. The shape of the second contact surface 231a is not limited; it can be a slope or a vertical surface. There are no restrictions here.

[0116] The push assembly 23 can be integrally formed on the drum box 21, or it can be formed separately from the drum box 21.

[0117] The specific construction of the forced push component 23 is not limited.

[0118] In some embodiments, please refer to Figures 5 to 10 The push assembly 23 includes a pusher 231 and an elastic member 232. The second abutment surface 231a is disposed on the side surface of the pusher 231 facing the force-receiving part 14. The elastic member 232 abuts against the pusher 231 and the side wall of the drum 21 facing the first abutment surface 14a along the first direction. When the developing cartridge 10 is subjected to external force, the electrical contact surface 13a moves toward the electrical contact 200, and the elastic member 232 stores energy. When the external force is removed, the elastic member 232 drives the electrical contact surface 13a to abut against the electrical contact 200 and causes the developing roller 12 to abut against the photosensitive drum 22 along the first direction.

[0119] For example, under the action of external force, the developing cartridge 10 transmits the external force and the force of the developing cartridge 10 abutting against the protective cover 201 of the electrical contact 200 to the pushing member 231 through the force receiving part 14, so that the pushing member 231 moves away from the developing roller 12 relative to the drum 21. At this time, the elastic member 232 undergoes elastic deformation and accumulates elastic potential energy. After the external force is removed, the elastic member 232 releases the elastic potential energy and drives the pushing member 231 to move towards the developing roller 12. At the same time, the pushing force is transmitted to the developing cartridge 10 through the abutment of the first abutment surface 14a and the second abutment surface 231a, driving the developing cartridge 10 to move upward and towards the photosensitive drum 22, so as to realize the abutment of the developing roller 12 and the photosensitive drum 22, and the abutment of the electrical contact 200 and the electrical contact surface 13a.

[0120] The specific construction of the elastic element 232 is not limited; for example, the elastic element 232 can be a spring.

[0121] In this embodiment, the push assembly 23 has a simple structure. The elastic element 232 enables the developing roller 12 to contact the photosensitive drum 22, and the electrical contact 200 to contact the electrical contact surface 13a. Simultaneously, it keeps the developing roller 12 and the photosensitive drum 22, and the electrical contact 200 and the electrical contact surface 13a in a docked state, increasing docking stability. By utilizing the existing push assembly 23 of the photosensitive assembly 20, the docking of the developing cartridge 10 with the electrical contact 200 and the photosensitive drum 22 is achieved in one step, resulting in a simple structure and convenient operation.

[0122] In some embodiments, please refer to Figures 7 to 9 The first contact surface 14a is an inclined surface. Along the direction from the top side to the bottom side, the first contact surface 14a extends downward in a first direction toward the developing roller 12.

[0123] In other words, the bottom end of the force-receiving part 14 is closer to the developing roller 12 than the top end of the force-receiving part 14. During the installation of the developing cartridge 10, the entire developing cartridge 10 can gradually move downward to fully enter the mounting cavity 1000a and avoid the structure (such as the protective cover 201) provided with the electrical contact 200. At the same time, the force is transmitted to the pushing assembly 23 through the first abutting surface 14a and pushes the pushing assembly 23 to move away from the developing roller 12, thereby realizing the gradual insertion of the developing cartridge 10.

[0124] In this embodiment, the first contact surface 14a is an inclined surface, that is, the first contact surface 14a is a plane with a certain inclination angle. The inclined surface has a simple structure, is easy to manufacture and form, and can reduce the manufacturing difficulty of the force-bearing part 14.

[0125] In other embodiments, please refer to Figure 10 The first contact surface 14a is an arc-shaped surface, extending in an arc shape along the first direction toward the developing roller 12 from the top side to the bottom side.

[0126] In this embodiment, the first contact surface 14a is an arc surface, which can provide a smooth transition, reduce the docking resistance between the contact surface and the push assembly 23, and increase the smoothness of movement.

[0127] The specific structure of the box component 11 is not limited.

[0128] In some embodiments, please refer to Figure 1 and Figure 2 The housing assembly 11 includes a housing 111, a first end cap 112, and a second end cap 113. The first end cap 112 and the second end cap 113 are connected to opposite sides of the housing 111 along the axial direction. The developing roller 12 is disposed within the space defined by the housing 111, the first end cap 112, and the second end cap 113. The chip mechanism 13 is disposed on the side of the first end cap 112 away from the second end cap 113 along the axial direction. The first direction intersects the axial direction.

[0129] Exemplarily, the housing 111 can be used to store developer, and the first end cap 112 or the second end cap 113 can serve as a connection end for the developing cartridge 10 to receive driving force or to receive electricity. The first end cap 112 or the second end cap 113 can directly or indirectly provide structural support for the developing roller 12. Taking the first end cap 112 as the driving end as an example, the locking rib 114 can be provided on the first end cap 112, and the locking rib 114 and the force-receiving part 14 can be arranged sequentially along the axial direction and toward the second end cap 113, that is, the force-receiving part 14 is closer to the second end cap 113 along the axial direction.

[0130] For example, please refer to Figure 2 The developing cartridge 10 also includes a drive assembly 17 connected to the developing roller 12. The drive assembly 17 is exposed from the first end cover 112 to receive rotational driving force from the imaging device 1000, thereby enabling the drive assembly 17 to drive the developing roller 12 to rotate.

[0131] For example, the developing cartridge 10 includes a powder feeding roller disposed within the space defined by the housing 111, the first end cap 112, and the second end cap 113, and in contact with the developing roller 12. The driving assembly 17 can drive the powder feeding roller and the developing roller 12 to rotate, and the powder feeding roller can supply the developing roller 12 with the developer stored in the cartridge assembly 11.

[0132] The chip mechanism 13 is located on the side of the first end cover 112 away from the second end cover 113 along the axial direction. Thus, the chip mechanism 13 is located on the edge side of the developing cartridge 10 along the axial direction, which can reduce the probability of damage to the chip mechanism 13 and make the structural arrangement of the developing cartridge 10 more reasonable.

[0133] The position of the force-bearing part 14 on the box assembly 11 is not limited, as long as it can be connected with the push assembly 23.

[0134] In some embodiments, the force-bearing part 14 is connected to the first end cap 112 and / or the second end cap 113.

[0135] Here, the force-receiving part 14 can be connected to the first end cover 112 or the second end cover 113. In this case, there can be only one force-receiving part 14, or the force-receiving part 14 can be connected to the first end cover 112 and the second end cover 113. In this case, there can be two force-receiving parts 14.

[0136] In this embodiment, the force-receiving part 14 is connected to the first end cap 112 and / or the second end cap 113. The first end cap 112 and / or the second end cap 113 can provide sufficient strength for the force-receiving part 14 so that the force-receiving part 14 can dock with the push assembly 23, and the molding is relatively convenient.

[0137] It is understood that the connection method between the force-bearing part 14 and the first end cap 112 and / or the second end cap 113 is not limited. The force-bearing part 14 may be integrally formed on the first end cap 112 and / or the second end cap 113; or the force-bearing part 14 may be separately formed from the first end cap 112 and / or the second end cap 113. The connection method between the force-bearing part 14 and the first end cap 112 and / or the second end cap 113 may be a detachable connection such as a snap-fit ​​or screw-fit, or a non-detachable connection such as an adhesive connection; no restrictions are placed here.

[0138] In other embodiments, please refer to Figure 1 and Figure 2 The force-bearing part 14 is connected to the housing 111.

[0139] In this embodiment, the force-receiving part 14 is connected to the housing 111. The housing 111 can provide a large connection space for the force-receiving part 14 and provide sufficient structural strength for the force-receiving part 14 to dock with the push assembly 23.

[0140] It is understood that the connection method between the force-bearing part 14 and the housing 111 is not limited. It can be that the force-bearing part 14 is integrally formed on the housing 111; or it can be that the force-bearing part 14 and the housing 111 are formed separately. The connection method between the force-bearing part 14 and the housing 111 can be a detachable connection such as snap-fit ​​or screw-fit, or a non-detachable connection such as adhesive bonding. There are no restrictions here.

[0141] For example, the force-bearing part 14 is connected to the housing 111, and the locking rib 114 is connected to the first end cap 112.

[0142] For example, in some embodiments, the force-bearing part 14 and the housing 111 are an integral structure.

[0143] In other words, the force-bearing part 14 and the housing 111 are an integral structure. This makes molding convenient, eliminates the need for separate molding of the force-bearing part 14, reduces assembly steps, and increases the assembly efficiency of the developing cartridge 10. In addition, the integral force-bearing part 14 and housing 111 have high structural strength, making it easy to dock with the push assembly 23 and increasing the structural reliability of the developing cartridge 10.

[0144] In other embodiments, please refer to Figure 2 The housing 111 has a slot 111a on at least one side along the axial direction, and the force-receiving part 14 has a block 141, which is inserted into the slot 111a.

[0145] In other words, in this embodiment, the housing 111 and the force-receiving part 14 are separate structures, and the housing 111 and the force-receiving part 14 are connected in a detachable manner.

[0146] Thus, when the stress-bearing part 14 is damaged, the connection between the stress-bearing part 14 and the housing 111 can be severed, and the stress-bearing part 14 can be replaced without replacing the housing 111, reducing maintenance and replacement costs. The stress-bearing part 14 is small in size and has low production costs, which can reduce the overall usage cost of the developing cartridge 10.

[0147] In this embodiment, the housing 111 and the force-bearing part 14 are connected by a locking block 141 and a locking slot 111a. The connection method is simple and easy to disassemble and assemble.

[0148] It is understood that the number of locking blocks 141 corresponds one-to-one with the number of locking slots 111a. The force-receiving part 14 may be provided with one or more locking blocks 141. For example, the force-receiving part 14 is provided with two locking blocks 141, thereby increasing the docking stability between the force-receiving part 14 and the housing 111.

[0149] In some embodiments, please refer to Figure 1 and Figure 2 There are two force-bearing parts 14, which are connected to opposite sides of the housing 111 along the axial direction.

[0150] Understandably, please refer to Figure 3 The number of push-pull components 23 in the photosensitive component 20 is two, and the two push-pull components 23 are arranged opposite each other along the axial direction of the photosensitive component 20.

[0151] In this embodiment, the force-receiving parts 14 are disposed on opposite sides of the housing 111 along the axial direction, which can increase the docking stability with the push assembly 23. At the same time, it can also increase the stability of the force and reduce the situation of force concentration on one side. The developing cartridge 10 can receive the push force from the push assembly 23 through the two force-receiving parts 14, making the movement of the developing cartridge 10 more stable and reducing the phenomenon of shaking, scraping and other phenomena caused by unstable movement.

[0152] In some embodiments, the first contact surface 14a is a complete surface.

[0153] It should be noted that a complete surface refers to the part of the first abutting surface 14a that has not been broken or separated. The first abutting surface 14a is a complete surface, and there are no gaps, seams or holes on the first abutting surface 14a.

[0154] In this embodiment, the first contact surface 14a has high integrity, which allows the force-bearing part 14 and the pushing component 23 to have a large contact area, thereby increasing docking stability.

[0155] In other embodiments, please refer to Figure 1 and Figure 2The force-bearing part 14 is provided with a clearance notch 14b, which passes through the first abutment surface 14a to divide the first abutment surface 14a into two non-connected parts. The clearance notch 14b is used to avoid the local interference position of the photosensitive component 20's pushing component 23.

[0156] In other words, in this embodiment, the first contact surface 14a is not a complete surface, and the avoidance gap 14b separates the first contact surface 14a into two parts.

[0157] In this embodiment, the avoidance notch 14b can avoid the structure of the push assembly 23, reducing the probability of obstruction. While stably abutting with the second abutting surface 231a on the push assembly 23, it will not form a stop with other structures of the push assembly 23. This ensures that the first abutting surface 14a and the second abutting surface 231a can always maintain contact when the developing cartridge 10 and the push assembly 23 move, increasing the docking reliability between the developing cartridge 10 and the photosensitive component 20.

[0158] In some embodiments, please refer to Figure 1 , Figures 7 to 9 The chip mechanism 13 includes a first guide surface 13b and a second guide surface 13c disposed on opposite sides of the electrical contact surface 13a along a first direction. The positions of the first guide surface 13b and the second guide surface 13c are lower than those of the electrical contact surface 13a. The first guide surface 13b and the second guide surface 13c are inclined surfaces or curved surfaces, used to avoid the electrical contacts 200 of the imaging device 1000.

[0159] In this embodiment, the first guide surface 13b and the second guide surface 13c can provide guidance while avoiding the electrical contact 200 of the imaging device 1000 during the process of docking or undocking the developing cartridge 10 with the contact, that is, provide guidance for the movement of the developing cartridge 10 relative to the electrical contact 200.

[0160] For example, along the top to bottom direction, the first guide surface 13b and the second guide surface 13c extend in a direction that moves away from each other.

[0161] For example, when it is necessary to connect the electrical contact surface 13a with the electrical contact 200, the protective cover 201 of the electrical contact 200 first abuts against the first guide surface 13b and generates an abutting force. Under the action of the external force, the electrical contact surface 13a moves relative to the electrical contact 200, moving from the bottom surface of the protective cover 201 to directly below the electrical contact 200. However, at this time, the electrical contact 200 and the electrical contact surface 13a have not yet abutted. Therefore, after the external force is removed, the pushing force of the pushing component 23 can make the electrical contact surface 13a move upward and enter the protective cover 201 to contact the electrical contact 200 inside the protective cover 201. At this time, the first guide surface 13b and the second guide surface 13c are lower than the electrical contact surface 13a. The first guide surface 13b and the second guide surface 13c can avoid the protective cover 201, making it easier for the electrical contact surface 13a to move upward to abut against the electrical contact 200.

[0162] When it is necessary to separate the electrical contact surface 13a from the electrical contact 200, this can be achieved by abutting against the second guide surface 13c, which will not be elaborated here.

[0163] For example, the chip assembly 13 may include a chip and a mounting base, with the chip disposed on the mounting base and an electrical contact surface 13a formed on the top surface of the chip.

[0164] The specific structure of the developing roller 12 is not limited.

[0165] In some embodiments, the developing roller 12 includes a developing roller shaft and a developing layer, the developing layer being located radially outside the developing roller shaft, the developing layer being used to carry the developing agent and forming a conductive path with the power output component of the imaging device 1000, and the developing roller shaft being a non-conductive component or covered with an insulating layer.

[0166] That is, the developing layer supplies the developer it carries to the photosensitive drum 22 through the rotation of the developing roller shaft.

[0167] For example, the powder feeding roller includes a powder feeding layer and a powder feeding roller shaft, the powder feeding layer being located radially outside the powder feeding roller shaft, the powder feeding layer conveying developer to the developing layer.

[0168] The developing layer and the power output component of the imaging device 1000 form a conductive path, meaning that the developing layer can obtain power from the power output component of the imaging device 1000, but the method of obtaining power is not limited. The power output component of the imaging device 1000 can be a developing electrode, a powder feeding electrode, or other power supply structure.

[0169] The developing roller is a non-conductive component or is covered with an insulating layer. In other words, the developing roller is not conductive, and the developing layer cannot obtain electrical energy through the developing roller. The developing roller is not located on the conductive path between the developing layer and the power output component. The developing layer forms a conductive path with the power output component of the imaging device 1000 through other structures.

[0170] The developing roller is covered with an insulating layer, which can be achieved through electroplating or spraying with non-conductive paint.

[0171] For example, the powder feeding roller shaft is a conductive component, and the powder feeding roller shaft is located on the conductive path between the developing layer and the power output component. The developing layer can obtain electrical energy through the powder feeding roller shaft.

[0172] Of course, the developing layer can also obtain electrical energy through other structures.

[0173] Of course, in other embodiments, the developing roller can also be a conductive component, located on the conductive path between the developing layer and the power output component, and the developing layer can obtain electrical energy through the developing roller.

[0174] In some embodiments, please refer to Figure 4 The developing cartridge 10 includes a powder dispensing blade 15, which is fixed to the cartridge assembly 11 and contacts the developing layer.

[0175] The powder dispensing blade 15 is fixed to the box assembly 11, which means that there is no relative movement between the powder dispensing blade 15 and the box assembly 11.

[0176] The powder ejector blade 15 can adjust the developer thickness.

[0177] In some embodiments, the powder ejector 15 is electrically connected to the power output of the imaging device 1000 and supplies power to the developing layer.

[0178] The powder-dispensing blade 15 is made of conductive material.

[0179] The powder ejector 15 is electrically connected to the power output component of the imaging device 1000, meaning that the powder ejector 15 is directly electrically connected to the power output component via a cable or other structure, without the need for other intermediate power supply structures.

[0180] In other words, the powder ejector 15 is located on the conductive path between the developing layer and the power output component. Power is supplied to the developing layer through the powder ejector 15. The power supply method is simple and does not require additional conductive path.

[0181] In other embodiments, the powder ejector 15 is electrically connected to the conductive structure of the photosensitive component 20 and supplies power to the developing layer, wherein the conductive structure of the photosensitive component 20 is electrically connected to the power output component of the imaging device 1000.

[0182] In other words, in this embodiment, the powder-discharging blade 15 is electrically connected to the power output component of the imaging device 1000 through the photosensitive component 20, that is, through the photosensitive component 20 as a relay. In this way, the structure of the power output component connected to the imaging device 1000 can be reduced, and the electrical connection method is simple.

[0183] It is understandable that the conductive structure of the photosensitive component 20 can also be a developing electrode or a powder feeding electrode, that is, the developing electrode and the powder feeding electrode can be installed on the photosensitive component 20. In this case, the power output component of the imaging device 1000 can be an electrical contact.

[0184] The following is in conjunction with the appendix Figure 6 To be continued Figure 8 A brief description will be given of the process of installing the developing cartridge 10 into the imaging device 1000 according to an embodiment of this application.

[0185] Please see Figure 6 The user holds the developing cartridge 10 and the photosensitive assembly 20 and inserts them into the mounting cavity 1000a. The user applies an external force S to the developing cartridge 10 through the handle 16. At this time, the first guide surface 13b abuts against the protective cover 201 of the electrical contact 200, and the developing cartridge 10 is subjected to an abutment force F1. The force-receiving part 14 transmits the external force S and the abutment force F1 to the pushing component 23 of the photosensitive assembly 20 through the first abutment surface 14a. This causes the pushing component 231 and the elastic component 232 to move away from the developing roller 12 under the action of force F2. The elastic component 232 is compressed and accumulates elastic potential energy. The developing cartridge 10 moves downward so that the electrical contact surface 13a is below the protective cover 201. The figure after the movement is shown in the figure. Figure 7 As shown.

[0186] After the user removes the external force, the developing cartridge 10 is no longer subjected to the contact force with the protective cover 201. At this time, the elastic element 232 releases its elastic potential energy, driving the pushing element 231 to move towards the developing roller 12, and transmitting the driving force F3 to the first contact surface 14a through the second contact surface 231a. F3 has an upward component force f4 and a component force f3 moving towards the developing roller 12 in the first direction. Thus, the developing cartridge 10 moves upward and towards the developing roller 12 under the action of the component forces f3 and f4, until the electrical contact surface 13a abuts against the electrical contact 200, and the developing roller 12 contacts the photosensitive drum 22. Thus, the installation of the developing cartridge 10 in the imaging device 1000 is completed.

[0187] In the description of this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine different embodiments or examples described in this application, as well as features of different embodiments or examples.

[0188] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A process cartridge which is installed in a photosensitive assembly and forms a process cartridge with the photosensitive assembly, the process cartridge being installed in an image forming apparatus, characterized by comprising: The application relates to a developer cartridge for an image forming apparatus, comprising: a cartridge assembly for accommodating a developer; a developer roller rotatably arranged in the cartridge assembly for carrying the developer; a chip mechanism having an electrical contact surface fixed to a top side of the cartridge assembly, the electrical contact surface being configured to be electrically contactable with an electrical contact of the image forming apparatus in a top-bottom direction; the cartridge assembly is provided with a locking rib protruding from a side of the cartridge assembly in a first direction, a top side of the locking rib having a mating surface configured to be lockingly engaged with a locking member of a photosensitive assembly; in the top-bottom direction, a distance between the mating surface and the electrical contact surface is 26-32 mm, the developer cartridge is capable of moving towards the electrical contact of the image forming apparatus under an external force, so that the electrical contact surface is abutted against the electrical contact of the image forming apparatus and the developer roller is abutted against a photosensitive drum of the photosensitive assembly in the first direction, wherein the first direction intersects the top-bottom direction.

2. The process cartridge according to claim 1, wherein, with a reference line being an end of the developer roller away from the developer roller in an axial direction of the developer roller, the locking rib has a first end and a second end arranged in the axial direction of the developer roller, a distance between the first end and the reference line is 15-21 mm, and a distance between the second end and the reference line is 32-38 mm; and / or, a thickness of the locking rib is 3.5-5 mm; wherein the first direction intersects the axial direction of the developer roller, the thickness direction of the locking rib intersects the axial direction of the developer roller, and intersects the first direction.

3. The process cartridge of claim 1, wherein, the developer cartridge comprises a force receiving portion fixed to the cartridge assembly, the force receiving portion is located on the same side of the cartridge assembly as the locking rib in the first direction, the force receiving portion is provided with a first abutting surface configured to be abutted against a pushing assembly of the photosensitive assembly in the first direction, in a direction from the top side to the bottom side, a distance between the first abutting surface and a rotation axis of the developer roller decreases, so that a pushing force applied by the pushing assembly on the developer cartridge at least has a component in the top-bottom direction and a component in the first direction; after the external force is removed, the developer cartridge is capable of moving to the position where the electrical contact surface is abutted against the electrical contact of the image forming apparatus and the developer roller is abutted against the photosensitive drum of the photosensitive assembly in the first direction under the pushing force of the pushing assembly.

4. The process cartridge of claim 3 wherein, the first abutting surface is an inclined surface or an arc-shaped surface; and / or, the first abutting surface is a complete surface; or the force receiving portion is provided with an avoiding gap penetrating through the first abutting surface to divide the first abutting surface into two parts not in communication with each other, the avoiding gap is configured to avoid local interference positions of the pushing assembly of the photosensitive assembly.

5. The process cartridge of claim 3 wherein, the cartridge assembly comprises a shell, a first end cover and a second end cover, the shell is configured to store the developer, the first end cover and the second end cover are connected to opposite sides of the shell in the axial direction, the developer roller is arranged in a space defined by the shell, the first end cover and the second end cover, and the chip mechanism is arranged on a side of the first end cover away from the second end cover in the axial direction. The force receiving part is connected to the first end cover and / or the second end cover, or the force receiving part is connected to the shell. The first direction intersects the axial direction.

6. The process cartridge of claim 5 wherein, The number of force receiving parts is two, and the two force receiving parts are connected to opposite sides of the shell in the axial direction. The force receiving part is an integral structure with the shell, or at least one side of the shell in the axial direction is provided with a clamping groove, and the force receiving part is provided with a clamping block which is inserted into the clamping groove.

7. The process cartridge of claim 1, wherein, The chip mechanism includes first and second guide surfaces arranged on opposite sides of the electrical contact surface in the first direction, the positions of the first and second guide surfaces are lower than that of the electrical contact surface, and the first and second guide surfaces are inclined surfaces or curved surfaces for avoiding the electrical contact of the imaging device.

8. The process cartridge of claim 1, wherein, The developing roller includes a developing roller shaft and a developing layer, the developing layer is located radially outside the developing roller shaft, the developing layer is used to carry a developer and forms an electrically conductive path with a power output of the imaging device, and the developing roller shaft is a non-conductive member or is covered with an insulating layer.

9. The process cartridge of claim 8 wherein, The developing cartridge includes a powder outlet knife, the powder outlet knife is fixed to the cartridge body assembly and is in contact with the developing layer. The powder outlet knife is electrically connected to the power output of the imaging device and supplies power to the developing layer. Alternatively, the powder outlet knife is electrically connected to the conductive structure of the photosensitive assembly and supplies power to the developing layer, wherein the conductive structure of the photosensitive assembly is electrically connected to the power output of the imaging device.

10. A process cartridge, characterized by, It comprises: a photosensitive assembly, including a drum cartridge, a photosensitive drum, and a push assembly, the photosensitive drum is rotatably arranged in the drum cartridge, and the push assembly is slidably arranged in the drum cartridge; and the developing cartridge of any one of claims 1-9; wherein the developing cartridge is detachably arranged in the drum cartridge, the drum cartridge is provided with a locking member, the locking member is provided with a locking space, the locking rib is arranged in the locking space, and the locking rib is locked and matched with the locking member through the matching surface; When the developing cartridge bears an external force, the push assembly slides relative to the drum cartridge and stores energy, the locking member can rotate relative to the drum cartridge, and after the external force is removed, the push assembly exerts a pushing force on the developing cartridge.

Images