Doctor blade mounting structure and processing box

Abstract

The utility model discloses a doctor blade installation structure and a processing cartridge, the doctor blade installation structure comprises a doctor blade and a toner cartridge shell used for installing the doctor blade, the doctor blade is detachably installed on the toner cartridge shell through a connecting piece, the connecting piece is made of a conductive material, the connecting piece is in conductive connection with the doctor blade, and the connecting piece is made of a conductive material. And meanwhile, conducting strips are conductively connected. The doctor blade installation structure comprises a doctor blade and a carbon powder box shell used for installing the doctor blade, the doctor blade is detachably installed on the carbon powder box shell through a connecting piece, the connecting piece is made of a conductive material, the connecting piece is in conductive connection with the doctor blade, and meanwhile the connecting piece is in conductive connection with a conductive sheet. Double conductive connection between the doctor blade and the conductive sheet is realized through the conductive connecting piece, and meanwhile, the detachable mounting structure is utilized to ensure the connection stability, so that the doctor blade has the advantage of ensuring stable conductive connection between the doctor blade and the conductive sheet.

Description

Technical Field

[0001] This application relates to the field of printing equipment technology, and in particular to a toner dispensing blade mounting structure and a processing box. Background Technology

[0002] Laser printers are commonly used printing devices. They utilize binary data information transmitted from a computer, which is converted into video signals by a video controller. The video interface / control system then converts these video signals into laser drive signals. A laser scanning system generates a laser beam carrying character information, which is then imaged and transferred onto a recording medium (such as paper) by an electrophotographic system. Laser imaging technology is a crucial component. The toner cartridge surface is charged using charging electrodes to achieve a specific potential. Exposure to the laser beam forms an electrostatic latent image. After development by a magnetic brush developer, the latent image transforms into a visible toner image. This image is then transferred to plain paper in the transfer area under the influence of the transfer electrode's electric field. Finally, the image is fixed on the paper by a preheating plate and a high-temperature hot roller, fusing the text and images onto the paper. The toner ejector blade in a laser printer scrapes away excess toner from the developing roller, ensuring the toner surface is smooth. Structurally, the toner ejector blade requires energization, with electrical connection achieved through a conductive plate. One end of the conductive plate connects to the contact terminal of the laser printer, and the other end connects to the toner ejector blade. However, the toner ejector blade is in close contact with the developing roller and has a thin structure. The large force generated by the rotation of the developing roller can deform the toner ejector blade, thereby affecting its contact with the conductive plate. When the toner ejector blade cannot return to its normal state after long-term operation, the conductive plate that is in direct contact with the edge of the toner ejector blade will not be able to form an effective electrical connection with it, ultimately affecting the normal operation of the toner ejector blade. Utility Model Content

[0003] The purpose of this application is to provide a powder dispensing knife mounting structure and processing box, which has the advantage of ensuring a stable conductive connection between the powder dispensing knife and the conductive sheet.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] On one hand, a powder dispensing blade mounting structure is provided, including a powder dispensing blade and a toner cartridge housing for mounting the powder dispensing blade. The powder dispensing blade is detachably mounted to the toner cartridge housing via a connector. The connector is made of a conductive material and is electrically connected to the powder dispensing blade, and is also electrically connected to a conductive sheet.

[0006] Optionally, the powder dispensing blade is provided with a first mounting hole, the conductive sheet is provided with a second mounting hole, and the connector passes through the first mounting hole and the second mounting hole to connect the powder dispensing blade and the conductive sheet.

[0007] Optionally, the toner cartridge housing is provided with a mounting part, the connector passes through the mounting part, the powder dispensing blade and the conductive sheet are respectively located on both sides of the mounting part, and the connector squeezes and locks the powder dispensing blade and the conductive sheet onto the mounting part.

[0008] Optionally, the mounting part has a mounting groove on the side where the conductive sheet is mounted, and the connector is engaged in the mounting groove.

[0009] Optionally, the connector includes a first connecting portion and a second connecting portion, wherein the position where the first connecting portion and the second connecting portion are connected forms a first abutting surface, and the conductive sheet is abutted against the mounting portion by the first abutting surface.

[0010] Optionally, the mounting groove includes a first mounting groove and a second mounting groove, the first connecting part is located in the first mounting groove, the second connecting part is located in the second mounting groove, and the position where the first mounting groove and the second mounting groove are connected forms a second abutting surface, and the conductive sheet is sandwiched between the first abutting surface and the second abutting surface.

[0011] Optionally, the first connecting part is a rectangular structure, the second connecting part is a cylindrical structure, the outer dimensions of the first connecting part are larger than the outer dimensions of the second connecting part, and the first abutting surface is formed on the first connecting part;

[0012] The shape of the first mounting groove corresponds to the shape of the first connecting part, and the shape of the second mounting groove corresponds to the shape of the second connecting part.

[0013] Optionally, the second connecting part is provided with an external thread, and the powder discharge knife is clamped on the mounting part by a nut engaging with the external thread.

[0014] Optionally, both ends of the powder dispensing blade are connected to the toner cartridge housing via the connector.

[0015] On the other hand, a processing box is provided in which a powder dispensing knife is mounted by the powder dispensing knife mounting structure described above.

[0016] The beneficial effects of this application are as follows: The powder dispensing knife installation structure includes a powder dispensing knife and a toner cartridge housing for installing the powder dispensing knife. The powder dispensing knife is detachably installed on the toner cartridge housing via a connector. The connector is made of conductive material and is conductively connected to the powder dispensing knife. It is also conductively connected to a conductive sheet. The conductive connector achieves a dual conductive connection between the powder dispensing knife and the conductive sheet. At the same time, the detachable installation structure ensures connection stability, which has the advantage of ensuring a stable conductive connection between the powder dispensing knife and the conductive sheet. Attached Figure Description

[0017] The present application will now be described in further detail with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the overall structure of the powder discharge blade installation structure described in the embodiments of this application;

[0019] Figure 2 This is an exploded view of the powder discharge blade installation structure described in the embodiments of this application;

[0020] Figure 3 This is an exploded view of another perspective of the powder discharge blade mounting structure described in the embodiments of this application;

[0021] Figure 4 This is an exploded view of another perspective of the powder discharge blade mounting structure described in the embodiments of this application;

[0022] Figure 5 for Figure 4 Enlarged view of a section at point I;

[0023] Figure 6 This is a three-dimensional structural diagram of the connector installed in the mounting groove according to an embodiment of this application;

[0024] Figure 7 This is a three-dimensional structural diagram of the connector described in the embodiments of this application;

[0025] Figure 8 This is another perspective view of the three-dimensional structure of the connector described in the embodiment of this application being installed in the mounting groove;

[0026] Figure 9 for Figure 8 Enlarged view of section II in the middle.

[0027] In the picture:

[0028] 100. Toner cartridge housing; 110. Mounting part; 111. Mounting groove; 1111. First mounting groove; 1112. Second mounting groove; 200. Toner dispensing knife; 210. First mounting hole; 300. Connector; 310. First connecting part; 320. Second connecting part; 400. Conductive sheet; 410. Second mounting hole; 500. Nut. Detailed Implementation

[0029] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this application are further described in detail below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description herein, it should be understood that the terms "upper," "lower," "left," "right," and other orientations or positional relationships are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no special meaning.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0035] In existing technologies, laser printers achieve uniform toner distribution through the cooperation of a toner ejector blade and a developing roller. Due to the mechanical stress generated by the continuous rotation of the developing roller, the toner ejector blade is prone to plastic deformation, leading to a reduction in the contact pressure between it and the conductive sheet. In traditional structures, the conductive sheet is directly fixed to the edge of the toner ejector blade. When the toner ejector blade undergoes irreversible deformation, the contact area between the two decreases or even detaches, affecting the stability of live-line operation.

[0036] To address the aforementioned problems, embodiments of this application provide a powder dispensing blade mounting structure, such as... Figure 1-9 As shown, it includes a powder dispensing blade 200 and a toner cartridge housing 100 for mounting the powder dispensing blade 200. The powder dispensing blade 200 is detachably mounted to the toner cartridge housing 100 via a connector 300. The connector 300 is made of conductive material and is electrically connected to the powder dispensing blade 200, and is also electrically connected to a conductive sheet 400.

[0037] The connector 300 penetrates the mounting holes on the toner blade 200 and the conductive sheet 400, and is pressed onto the surface of the toner cartridge housing 100 by axial locking force. During installation, the connector 300 directly contacts the metal substrate of the toner blade 200 to form a first conductive path, while the connector 300 contacts the conductive sheet 400 to form a second conductive path. When the developing roller rotates, causing a slight deformation of the toner blade 200, the connector 300 acts as a rigid support to maintain the relative position of the conductive sheet 400 and the toner blade 200. This dual-path conductive design ensures uninterrupted current transmission.

[0038] Through the above technical solution, this application effectively maintains a stable electrical connection between the powder outlet blade 200 and the conductive sheet 400, preventing contact failure caused by the rotational stress of the developing roller and extending the service life of the conductive components. At the same time, the detachable structure simplifies the maintenance process of the powder outlet blade 200, enabling modular replacement while ensuring conductivity.

[0039] Specifically, refer to Figure 2 As shown in the embodiment of this application, the powder dispensing blade 200 is provided with a first mounting hole 210, the conductive sheet 400 is provided with a second mounting hole 410, and the connector 300 passes through the first mounting hole 210 and the second mounting hole 410 to connect the powder dispensing blade 200 and the conductive sheet 400.

[0040] The first mounting hole 210 is a through hole provided on the powder dispensing blade 200, used to position the relative position of the powder dispensing blade 200 and the connector 300. The second mounting hole 410 is a through hole provided on the conductive sheet 400, used to fix the conductive sheet 400 to the connector 300. The mechanical connection and electrical conduction between the powder dispensing blade 200 and the conductive sheet 400 are achieved by passing through the first mounting hole 210 and the second mounting hole 410.

[0041] Once the connector 300 is locked, a stable contact interface is formed between the powder discharge blade 200 and the conductive sheet 400, ensuring that current is transmitted from the conductive sheet 400 to the powder discharge blade 200 via the connector 300. Since the connector 300 achieves electrical conductivity simultaneously during the mechanical fixing process, no additional conductive medium or auxiliary structure is required between the powder discharge blade 200 and the conductive sheet 400, simplifying the assembly process.

[0042] Reference Figure 3 , 5 As shown, the toner cartridge housing 100 is provided with a mounting part 110, the connector 300 passes through the mounting part 110, the powder dispensing blade 200 and the conductive sheet 400 are respectively located on both sides of the mounting part 110, and the connector 300 squeezes and locks the powder dispensing blade 200 and the conductive sheet 400 onto the mounting part 110 respectively.

[0043] The connector 300 passing through the mounting part 110 means that the connector 300 passes through the hole or gap of the mounting part 110. Specifically, it can be achieved using bolts, pins, or snap-fit ​​structures. Its function is to form a fixed constraint through physical penetration. The powder dispensing blade 200 and the conductive sheet 400 being located on opposite sides of the mounting part 110 means that they are arranged separately in opposite positions of the mounting structure. Specifically, this can be achieved through separate clamping or layered positioning. Its function is to provide spatial isolation for the stability of the conductive connection. The compression locking provides continuous contact force for the conductive path, so that a stable multi-point pressure distribution is formed in the contact area between the conductive sheet 400 and the powder dispensing blade 200. At the same time, the toner cartridge housing 100 acts as an intermediate conductive carrier, preventing the conductive sheet 400 from directly bearing the displacement deviation caused by mechanical deformation.

[0044] This application embodiment also provides a specific mounting structure for the conductive sheet 400, see reference. Figure 5 As shown, the mounting part 110 has a mounting groove 111 on the side where the conductive sheet 400 is mounted, and the connector 300 is engaged in the mounting groove 111.

[0045] The mounting groove 111 restricts the horizontal displacement of the connector 300, ensuring its vertical stability. The locking mechanism prevents the connector 300 from loosening under external force, ensuring uniform contact pressure between the conductive sheet 400 and the powder discharge blade 200. The mounting groove 111 also improves the positioning accuracy of the connector 300, preventing poor contact of the conductive sheet 400 due to assembly errors.

[0046] Furthermore, refer to Figure 7As shown, the connector 300 includes a first connecting portion 310 and a second connecting portion 320. The first connecting portion 310 and the second connecting portion 320 are connected to form a first abutting surface. The conductive sheet 400 is abutted against the mounting portion 110 by the first abutting surface.

[0047] In this embodiment, the first connecting part 310 refers to the partial structure in the connector 300 used to fix the conductive sheet 400, and the second connecting part 320 refers to the partial structure in the connector 300 used to achieve axial locking. The first connecting part 310 and the second connecting part 320 are integrally formed or mechanically connected to form an integral structure. When the connector 300 is installed into the mounting part 110 of the toner cartridge housing 100, the first abutment surface and the corresponding plane of the mounting part 110 form rigid contact, and the conductive sheet 400 is clamped between the first abutment surface and the mounting part 110. During the assembly process, the second connecting part 320 achieves axial fastening through a threaded connection or a snap-fit ​​structure, so that the first abutment surface generates continuous pressure, ensuring that the conductive sheet 400 and the mounting part 110 maintain stable contact.

[0048] Preferably, referring to Figure *, the mounting groove 111 in this embodiment includes a first mounting groove 1111 and a second mounting groove 1112. The first connecting part 310 is located in the first mounting groove 111, and the second connecting part 320 is located in the second mounting groove 1112. The position where the first mounting groove 111 and the second mounting groove 1112 are connected forms a second abutting surface, and the conductive sheet 400 is sandwiched between the first abutting surface and the second abutting surface.

[0049] The first mounting groove 111 and the second mounting groove 1112 refer to recessed structures with different spatial shapes on the mounting portion 110. The first abutting surface refers to the stepped surface formed by the transition area between the first connecting portion 310 and the second connecting portion 320 on the connector 300. The second abutting surface refers to the stepped surface formed at the junction of the first mounting groove 111 and the second mounting groove 1112. The first connecting portion 310 of the connector 300 is embedded in the first mounting groove 111, and the second connecting portion 320 is embedded in the second mounting groove 1112. Since the size of the first mounting groove 111 is larger than that of the second mounting groove 1112, the transition area between the first connecting portion 310 and the second connecting portion 320 forms the first abutting surface during the assembly process. Contact pressure is generated between this abutting surface and the second abutting surface of the mounting portion 110. The conductive sheet 400 is placed between the two abutting surfaces, and bidirectional clamping is achieved through the assembly relationship between the connector 300 and the mounting groove 111. When the connector 300 is subjected to an external load, the first mounting groove 111 and the second mounting groove 1112 limit different parts of the connector 300 to prevent the conductive sheet 400 from loosening due to uneven force.

[0050] Preferably, refer to Figure 7As shown, in this embodiment of the application, the first connecting part 310 is a rectangular structure, the second connecting part 320 is a cylindrical structure, the outer dimensions of the first connecting part 310 are larger than the outer dimensions of the second connecting part 320, and the first abutting surface is formed on the first connecting part 310.

[0051] The shape of the first mounting groove 111 corresponds to the shape of the first connecting portion 310, and the shape of the second mounting groove 1112 corresponds to the shape of the second connecting portion 320.

[0052] The rectangular first connecting portion 310 restricts the rotation of the connector 300, while the cylindrical second connecting portion 320 facilitates the installation of the threaded connector 300. Since the first abutment surface is formed at the edge of the first connecting portion 310, when the connector 300 is locked, this abutment surface presses the conductive sheet 400 against the second abutment surface of the mounting groove 111, ensuring a high conductive contact area between the two. The shape matching relationship between the mounting groove 111 and the connecting portion eliminates the need for additional angle adjustments during assembly; simply aligning the rectangular structure with the first mounting groove 111 achieves rapid positioning.

[0053] In this embodiment, the connector 300 is fixed in a specific way. The second connecting part 320 is provided with an external thread. The powder dispensing blade 200 is clamped onto the mounting part 110 by the engagement of the nut 500 with the external thread. On the mounting part 110 of the toner cartridge housing 100, the external thread of the second connecting part 320 and the internal thread of the nut 500 mesh with each other. When the nut 500 is screwed in along the thread axis, an axial preload is generated through the transmission action of the thread pair, so that the powder dispensing blade 200 is evenly pressed against the surface of the mounting part 110. The mechanical self-locking characteristic of the thread pair maintains a stable clamping state, ensuring that the conductive connection between the powder dispensing blade 200 and the conductive sheet 400 remains effective during long-term use, avoiding power interruption or uneven toner scraping caused by contact failure.

[0054] Preferably, both ends of the powder dispensing blade 200 are connected to the toner cartridge housing 100 via the connectors 300. In this application, the conductive sheet 400 is connected to only one side via the connector 300, while the other side is only used for fastening. However, except for the side without the conductive sheet 400, its structure can be the same as the side with the conductive sheet 400, thereby simplifying the complexity of parts processing and installation.

[0055] Meanwhile, this application also provides a processing box, in which a toner dispensing blade 200 is mounted via a toner blade mounting structure. This mounting structure includes the toner blade 200 and a toner cartridge housing 100 for mounting the toner blade 200. The toner blade 200 is detachably mounted to the toner cartridge housing 100 via a connector 300. The connector 300 is made of conductive material and is electrically connected to the toner blade 200, and also electrically connects to a conductive sheet 400. This application solves the problem of contact failure of the conductive sheet 400 due to deformation of the toner blade 200, ensuring the stability of the toner blade 200 during energized operation, while simplifying the toner blade 200 replacement process, reducing equipment downtime, and improving the operating efficiency and maintenance convenience of the printing equipment.

[0056] The technical principles of this application have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this application and should not be construed as limiting the scope of protection of this application in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this application without inventive effort, and these embodiments will all fall within the scope of protection of this application.

Claims

1. A powder discharge blade mounting structure, characterized in that, It includes a powder dispensing blade (200) and a toner cartridge housing (100) for mounting the powder dispensing blade (200). The powder dispensing blade (200) is detachably mounted to the toner cartridge housing (100) via a connector (300). The connector (300) is made of conductive material and is electrically connected to the powder dispensing blade (200), and is also electrically connected to a conductive sheet (400).

2. The powder discharge blade installation structure according to claim 1, characterized in that, The powder dispensing blade (200) is provided with a first mounting hole (210), and the conductive sheet (400) is provided with a second mounting hole (410). The connector (300) passes through the first mounting hole (210) and the second mounting hole (410) to connect the powder dispensing blade (200) and the conductive sheet (400) simultaneously.

3. The powder discharge blade installation structure according to claim 2, characterized in that, The toner cartridge housing (100) is provided with a mounting part (110), the connector (300) passes through the mounting part (110), the powder dispensing blade (200) and the conductive sheet (400) are respectively located on both sides of the mounting part (110), and the connector (300) presses and locks the powder dispensing blade (200) and the conductive sheet (400) onto the mounting part (110).

4. The powder discharge blade installation structure according to claim 3, characterized in that, The mounting part (110) has a mounting groove (111) on the side where the conductive sheet (400) is mounted, and the connector (300) is engaged in the mounting groove (111).

5. The powder discharge blade installation structure according to claim 4, characterized in that, The connector (300) includes a first connecting part (310) and a second connecting part (320). The first connecting part (310) and the second connecting part (320) are connected to form a first abutting surface. The conductive sheet (400) is abutted against the mounting part (110) by the first abutting surface.

6. The powder discharge blade installation structure according to claim 5, characterized in that, The mounting groove (111) includes a first mounting groove (1111) and a second mounting groove (1112). The first connecting part (310) is located in the first mounting groove (1111), and the second connecting part (320) is located in the second mounting groove (1112). The position where the first mounting groove (1111) and the second mounting groove (1112) are connected forms a second abutment surface. The conductive sheet (400) is sandwiched between the first abutment surface and the second abutment surface.

7. The powder discharge blade installation structure according to claim 6, characterized in that, The first connecting part (310) is a rectangular structure, the second connecting part (320) is a cylindrical structure, the outer dimensions of the first connecting part (310) are larger than the outer dimensions of the second connecting part (320), and the first abutting surface is formed on the first connecting part (310). The shape of the first mounting groove (1111) corresponds to the shape of the first connecting part (310), and the shape of the second mounting groove (1112) corresponds to the shape of the second connecting part (320).

8. The powder discharge blade installation structure according to claim 7, characterized in that, The second connecting part (320) is provided with an external thread, and the powder discharge knife (200) is clamped on the mounting part (110) by the nut (500) cooperating with the external thread.

9. The powder discharge blade installation structure according to claim 8, characterized in that, Both ends of the powder dispensing blade (200) are connected to the toner cartridge housing (100) via the connector (300).

10. A processing box, characterized in that, The powder discharge knife (200) is installed using the powder discharge knife mounting structure according to any one of claims 1-9.

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