Doctor blade structure of laser printer

Abstract

The utility model relates to a doctor blade structure of a laser printer, which comprises a doctor blade holder and a doctor blade arranged on the doctor blade holder, the doctor blade holder comprises a blade holder plate and a support plate which are integrally formed by bending, and the left side and the right side of the edge of the upper end of the blade holder plate are both provided with protruding pieces. The protruding pieces are arranged towards the inner side in an offset mode to form a step with the knife rest plate, and the powder outlet blade is arranged on the outer side of the upper end of the knife rest plate and located between the two protruding pieces. The protruding piece which is arranged on the edge of the upper end of the tool rest plate in an inwards-deviating mode is arranged, so that a step structure matched with a selenium drum rubber piece gasket is formed. The step can accurately position the installation position of the gasket, multiple sealing paths are formed through the matching face of the protruding piece and the tool rest plate, carbon powder is effectively prevented from leaking from the connecting position of the powder outlet tool rest and the selenium drum rubber piece, and the overall sealing performance of the assembly is remarkably improved.

Description

A toner ejector blade structure for a laser printer Technical Field

[0001] This utility model relates to the field of printer accessories technology, and in particular to a toner ejector blade structure for a laser printer. Background Technology

[0002] In the toner cartridge assembly of a laser printer, the sealing performance of the toner ejector blade directly affects print quality and toner utilization. During the assembly of traditional toner ejector blades and toner cartridge components, insufficient sealing design often leads to toner leakage or uneven distribution, affecting print quality and potentially causing equipment contamination and increased maintenance costs. Existing technologies sometimes improve sealing by adding gaskets to the toner cartridge components, but the toner ejector blade lacks a matching positioning and mating structure, resulting in poor gasket installation stability and insufficient sealing accuracy, making it difficult to meet the demands of high-precision printing scenarios. Therefore, optimizing the toner ejector blade structure to achieve a reliable fit with the toner cartridge component gasket has become a pressing technical problem to be solved in this field. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, the present invention proposes a toner ejector blade structure for a laser printer.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A toner dispensing blade structure for a laser printer includes a toner dispensing blade holder and a toner dispensing blade disposed on the toner dispensing blade holder. The toner dispensing blade holder includes a blade holder plate and a support plate integrally formed by bending. Protrusions are provided on both the left and right sides of the upper edge of the blade holder plate. The protrusions are offset inward and form a step with the blade holder plate. The toner dispensing blade is disposed on the outer side of the upper edge of the blade holder plate and is located between the two protrusions.

[0006] In some embodiments, the protruding piece is integrally formed with the blade holder plate, and the step is formed by stamping and bending.

[0007] In some embodiments, the recess depth of the step is 0.3-0.6 mm.

[0008] In some embodiments, mounting through holes are provided on both the left and right sides of the tool holder plate.

[0009] In some embodiments, the powder-dispensing blade is made of stainless steel and has a thickness of 0.1 mm.

[0010] In some embodiments, the powder discharge blade holder is made of electro-galvanized steel sheet with a thickness of 1.6 mm.

[0011] In some embodiments, the powder dispensing blade holder and the powder dispensing blade are fixed together by welding.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting an inwardly offset protrusion on the upper edge of the blade holder plate, a stepped structure adapted to the gasket of the toner cartridge is formed. This step can accurately position the gasket installation position, and the mating surface between the protrusion and the blade holder plate forms multiple sealing paths, effectively preventing toner leakage from the connection between the toner dispenser blade and the toner cartridge, significantly improving the overall sealing performance of the assembly. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 is one of the three-dimensional schematic diagrams of the powder dispensing blade of this utility model;

[0015] Figure 2 is a second three-dimensional schematic diagram of the powder dispensing blade of this utility model;

[0016] Figure 3 is a side view of the powder dispensing blade of this utility model. Detailed Implementation

[0017] The following detailed description provides various embodiments or examples for implementing this utility model. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of this utility model and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0018] As shown in Figures 1-3, a toner dispensing blade structure for a laser printer includes a toner dispensing blade holder 1 and a toner dispensing blade 2 disposed on the toner dispensing blade holder 1. The toner dispensing blade holder 1 includes a blade holder plate 3 integrally formed by bending and a support plate 4. Both sides of the upper edge of the blade holder plate 3 are provided with protruding pieces 5. The protruding pieces 5 are offset inward and form a step 6 with the blade holder plate 3. The toner dispensing blade 2 is disposed on the outer side of the upper end of the blade holder plate 3 and is located between the two protruding pieces 5.

[0019] According to the above structure, by setting an inwardly biased protrusion 5 on the upper edge of the blade holder plate 3, a stepped structure adapted to the gasket of the toner cartridge is formed; the step 6 can accurately position the gasket installation position, and the mating surface between the protrusion 5 and the blade holder plate 3 forms multiple sealing paths, effectively preventing toner from leaking from the connection between the toner outlet blade holder 1 and the toner cartridge, significantly improving the overall sealing performance of the component.

[0020] Furthermore, the protruding piece 5 is integrally formed with the blade holder plate 3, and the step 6 is formed by stamping and bending. When manufacturing the powder blade holder 1, the electro-galvanized steel plate is stamped and bent once using a stamping die, so that the blade holder plate 3 and the protruding piece 5 are formed synchronously. By adjusting the die parameters, the shape, size and angle of the step 6 are precisely controlled to ensure a good fit between the step 6 and the toner cartridge rubber gasket. During the forming process, the pressure and speed of the stamping equipment are optimized to ensure stable step forming quality.

[0021] In addition, step 6 is formed by stamping and bending, which is a simple process, easy to control the dimensional accuracy, ensures the fitting accuracy with the gasket, and can also achieve mass production, reducing manufacturing costs.

[0022] In this invention, the recess depth of the step 6 is 0.3-0.6 mm.

[0023] During the stamping die design phase, the stepped forming part of the die was designed as an adjustable structure based on the thickness and elastic properties of the gasket. During the production process, different recess depths were selected for testing through trial die operation to measure the sealing performance and gasket deformation after installation. Finally, the die parameters with a recess depth in the range of 0.3-0.6mm were determined for mass production to ensure that the step depth of each powder discharge blade meets the requirements.

[0024] In this utility model, mounting through holes 41 are provided on both the left and right sides of the blade holder plate 3, which facilitates the quick and secure installation and fixing of the toner blade holder 1 to the plastic parts of the laser printer drum by means of screws, bolts and other connecting parts, thereby improving assembly efficiency and ensuring the positional accuracy and stability of the toner blade holder inside the printer.

[0025] In this utility model, the powder dispensing blade 2 is made of stainless steel and has a thickness of 0.1mm. The stainless steel material of the powder dispensing blade 2 has good wear resistance, corrosion resistance and strength. It can maintain the sharpness and shape stability of the blade in working environments with long-term contact and friction with toner, and extend the service life of the blade. The 0.1mm thickness design can ensure that the blade has sufficient rigidity and is not easily deformed during the powder scraping process. It can also reduce the weight of the blade, reduce the load on the powder dispensing blade holder, and facilitate installation and replacement.

[0026] In this utility model, the powder dispensing blade holder 1 is made of electro-galvanized steel plate with a thickness of 1.6mm. The electro-galvanized layer of the powder dispensing blade holder 1 can effectively prevent the steel plate from rusting and corroding, extend the service life of the blade holder, and ensure its structural strength and performance stability in complex working environments such as humidity and dust. The 1.6mm thickness design gives the blade holder sufficient rigidity and load-bearing capacity, which can stably support the powder dispensing blade, while controlling the weight and cost of the blade holder while meeting the strength requirements.

[0027] In this utility model, the powder dispensing blade holder 1 and the powder dispensing blade 2 are fixedly connected by welding; the connection between the powder dispensing blade holder 1 and the powder dispensing blade 2 is high, which can ensure that the blade will not loosen or fall off during long-term use, and ensure the stability and reliability of the powder dispensing blade structure; the welding method can achieve a tight connection, reduce connection gaps, and prevent carbon powder from entering the gaps, causing the blade to jam or affecting the sealing performance.

[0028] Based on the accompanying drawings and the foregoing display and description of the basic principles, main features, and advantages of this utility model, those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A toner dispensing blade structure for a laser printer, comprising a toner dispensing blade holder (1) and a toner dispensing blade (2) disposed on the toner dispensing blade holder (1), characterized in that: The powder dispensing blade holder (1) includes a blade holder plate (3) and a support plate (4) integrally formed by bending. The upper edge of the blade holder plate (3) is provided with protrusions (5) on both the left and right sides. The protrusions (5) are offset inward and form a step (6) with the blade holder plate (3). The powder dispensing blade (2) is located on the outer side of the upper end of the blade holder plate (3) and between the two protrusions (5).

2. The powder outletting knife structure of a laser printer according to claim 1, characterized in that: The protruding piece (5) is integrally formed with the blade holder plate (3), and the step (6) is formed by stamping and bending.

3. The powder outletting knife structure of a laser printer according to claim 1, characterized in that: The recess depth of the step (6) is 0.3-0.6 mm.

4. The toner ejector blade structure of a laser printer according to claim 1, characterized in that: Mounting through holes (41) are provided on both the left and right sides of the tool holder plate (3).

5. The toner ejector blade structure of a laser printer according to claim 1, characterized in that: The powder-discharging blade (2) is made of stainless steel and has a thickness of 0.1 mm.

6. The toner ejector blade structure for a laser printer according to claim 1, characterized in that: The powder discharge blade holder (1) is made of electro-galvanized steel plate with a thickness of 1.6mm.

7. The toner ejector blade structure for a laser printer according to claim 1, characterized in that: The powder discharge blade holder (1) and the powder discharge blade (2) are fixed together by welding.

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