Doctor blade in toner cartridge of printer

Abstract

The utility model discloses a doctor blade in a toner cartridge of a printer. The doctor blade comprises a blade body and a blade rest, the knife rest comprises a first inverted-L-shaped support and a second inverted-L-shaped support, the first support and the second support are formed by bending the same metal plate, the lower end of the first support is attached to the lower end of the second support, and mounting holes are formed in the two sides of the lower end of the first support and the two sides of the lower end of the second support respectively. The upper end of the first support and the upper end of the second support are arranged in a spaced mode, the two ends of the second support are bent in the direction close to the first support to form side flanges, a containing area is defined by the first support, the second support and the two side flanges, and the installation end of the cutter body is inserted into the containing area. The first support and the second support are provided with threaded holes, and compression screws are in threaded connection in the threaded holes of the first support and the second support. The toner discharge cutter in the toner cartridge of the printer has the advantages of being made of a single plate, high in integrity and convenient to assemble and use.

Description

Technical Field

[0001] The utility model relates to the technical field of laser printers, in particular to a powder discharging knife in a printer cartridge. Background Art

[0002] The powder outlet of the toner cartridge used in laser printers is equipped with a magnetic roller and a metal powder knife. The main function of the metal powder knife is to cooperate with the magnetic roller to control the thickness of the toner layer on the surface of the magnetic roller sleeve, and to rub against the magnetic roller sleeve to make the toner charged by friction. The common metal powder knife is a combination of a knife body and a simple bracket during assembly. The bracket is installed in the toner cartridge using the bracket. The bracket is generally L-shaped and is bonded to the knife body. The bracket is connected to the toner cartridge by screws.

[0003] Chinese patent CN202320089137.3 discloses a stably installed powder knife for a printer, which includes a knife body, a knife holder and a reinforcement frame. The knife body is bonded in the installation groove of the knife holder, and the knife body is fixed by a pressure plate of the reinforcement frame. The knife body is connected by a split knife holder and a reinforcement frame, which has poor integrity, cumbersome assembly process and low efficiency. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by this patent application is how to provide a powder knife inside a printer cartridge that is made of a single plate, has high integrity, and is easy to assemble and use.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A toner knife for discharging powder in a printer cartridge, comprising a knife body and a knife holder;

[0007] The tool holder includes two first and second brackets in an "inverted L" shape. The first and second brackets are made by bending the same metal plate. The lower ends of the first and second brackets are fitted together. Both sides of the lower ends of the first and second brackets are provided with mounting holes. The upper ends of the first and second brackets are spaced apart. Both ends of the second bracket are bent toward the direction close to the first bracket to form side guards. The first bracket, the second bracket and the two side guards form a placement area. The mounting end of the tool body is inserted into the placement area. The first and second brackets are provided with threaded holes. The threaded holes of the first and second brackets are threadedly connected with clamping screws.

[0008] In this way, the first bracket and the second bracket are made by bending the same metal plate, with high integrity. The knife body is installed in the placement area and the knife body is tightened by the tightening screw to facilitate installation. After the installation is completed, the knife holder is connected to the toner cartridge by using bolts passing through the installation hole.

[0009] Wherein, the surfaces facing each other of the first bracket and the second bracket and the surfaces facing each other of the two side ribs are all coated with adhesive.

[0010] Wherein, the lower ends of the first bracket and the second bracket are bonded by gluing.

[0011] Wherein, the second bracket has a reinforcing plate bent outward, and the outer end of the reinforcing plate is arc-shaped and abuts against the upper end of the second bracket.

[0012] Wherein, the outer end of the reinforcing plate is bonded to the second bracket.

[0013] In summary, the powder discharge knife in the toner cartridge of the printer has the advantages of being made of a single plate component, having high integrity, and being easy to assemble and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic structural diagram of a powder discharge knife in a printer cartridge.

[0015] Figure 2 for Figure 1 Another schematic diagram.

[0016] Figure 3 for Figure 1 Schematic diagram after removing the knife body. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below in conjunction with the accompanying drawings. In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "upper, lower" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0018] like Figure 1-3 As shown, a toner knife in a printer cartridge includes a knife body 1 and a knife holder;

[0019] The tool holder includes two "inverted L"-shaped first brackets 2 and second brackets 3, the first bracket and the second bracket are made by bending the same metal plate, the lower ends of the first bracket and the second bracket are fitted together, and mounting holes 4 are provided on both sides of the lower ends of the first bracket and the second bracket, the upper ends of the first bracket and the second bracket are spaced apart, and the two ends of the second bracket are bent toward the direction close to the first bracket to form side guards 5, the first bracket, the second bracket and the two side guards form a placement area 6, and the mounting end of the tool body is inserted into the placement area, the first bracket and the second bracket are provided with threaded holes, and the threaded holes of the first bracket and the second bracket are threadedly connected with clamping screws 7.

[0020] In this way, the first bracket and the second bracket are made by bending the same metal plate, with high integrity. The knife body is installed in the placement area and the knife body is tightened by the tightening screw to facilitate installation. After the installation is completed, the knife holder is connected to the toner cartridge by using bolts passing through the installation hole.

[0021] During implementation, the surfaces facing the first bracket and the second bracket and the surfaces facing the two side ribs are all coated with adhesive, thereby improving the installation reliability of the tool body.

[0022] During implementation, the lower ends of the first bracket and the second bracket are bonded by gluing to improve the stability of the first bracket and the second bracket.

[0023] During implementation, the second bracket has a reinforcing plate 8 bent outward, the outer end of the reinforcing plate is arc-shaped and abuts against the upper end of the second bracket, so as to better support the second bracket.

[0024] During implementation, the outer end of the reinforcing plate is bonded to the second bracket to improve integrity.

[0025] Finally, it should be noted that those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these modifications and variations.

Claims

1. A powder knife in a printer cartridge, characterized in that: Including a knife body and a knife holder; The tool holder includes two "inverted L"-shaped first brackets and a second bracket, the first bracket and the second bracket are made by bending the same metal plate, the lower ends of the first bracket and the second bracket are fitted together, and mounting holes are provided on both sides of the lower ends of the first bracket and the second bracket, the upper ends of the first bracket and the second bracket are spaced apart, and the two ends of the second bracket are bent toward the direction close to the first bracket to form side guards, the first bracket, the second bracket and the two side guards form a placement area, the mounting end of the tool body is inserted into the placement area, the first bracket and the second bracket are provided with threaded holes, and the threaded holes of the first bracket and the second bracket are threadedly connected with clamping screws.

2. A powder knife in a printer cartridge according to claim 1, characterized in that: The surfaces facing each other of the first bracket and the second bracket and the surfaces facing each other of the two side ribs are all coated with adhesive.

3. A powder knife in a printer cartridge according to claim 2, characterized in that: The lower ends of the first bracket and the second bracket are bonded by gluing.

4. A powder knife in a printer cartridge according to claim 1, characterized in that: The second bracket has a reinforcing plate bent outward, and the outer end of the reinforcing plate is arc-shaped and abuts against the upper end of the second bracket.

5. A powder knife in a printer cartridge according to claim 4, characterized in that: The outer end of the reinforcing plate is bonded to the second bracket.

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