Fixing device for surface charging and discharging mechanism of heating roller of laser printer

Abstract

The utility model relates to the technical field of laser printers, and discloses a fixing device for a laser printer heating roller surface charging and discharging mechanism, which comprises a fixing support, a second fixing bolt is in threaded connection with the inside of the fixing support, and a charging and discharging assembly is arranged at the rear end of the second fixing bolt. The top of the charging and discharging assembly is provided with a discharging electrode piece, the upper side of the discharging electrode piece is connected with a first heating roller, a third fixing bolt is arranged in the fixing support, the rear end of the third fixing bolt is in threaded connection with a printer body, and a groove is formed in the front side of the printer body. According to the charging and discharging mechanism, the third fixing bolts are used for fixing the fixing supports, the discharging electrode pieces are connected with the first heating roller, the charging and discharging assembly is installed in the groove, the second fixing bolts abut against the charging and discharging assembly, and the problems that the charging and discharging mechanism is tedious in installation and replacement steps, and the cost is high due to the complexity of the assemblies are solved.

Description

Technical Field

[0001] This utility model relates to the field of laser printer technology, and in particular to a fixing device for a surface discharge mechanism of a laser printer heating roller. Background Technology

[0002] A laser printer is a device that converts digital signals output from a computer into high-quality printed text and images. Its core working principle combines laser scanning technology and electrophotographic technology. During the printing process, the paper eventually passes through the heating and pressure rollers of the fixing assembly, allowing the toner to adhere firmly to the paper. Once the toner is firmly attached, an electrostatic discharge mechanism treats the heating rollers, causing the static electricity on the roller surface to tightly attract the paper, ensuring close contact between the paper and the heating and pressure rollers during the fixing process.

[0003] Currently, the electrostatic discharge mechanisms on the market treat the surface of the heating roller by using complex circuit control to achieve electrostatic discharge. In other words, mainstream printers basically rely on signal-driven circuits to switch from low voltage to high voltage, and then pull the heating roller to perform negative pressure and discharge.

[0004] However, in the actual assembly process, there are problems such as cumbersome installation and replacement steps for the charging and discharging mechanism, and high costs due to the complexity of its components. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a fixing device for the surface discharge mechanism of the heating roller of a laser printer, which aims to improve the problems of cumbersome installation and replacement steps of the discharge mechanism and the high cost caused by the complexity of its components.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a fixing device for a surface discharge mechanism of a laser printer heating roller, comprising a fixing bracket, a fixing bolt two being threadedly connected inside the fixing bracket, a discharge assembly being provided at the rear end of the fixing bolt two, a discharge electrode being provided at the top of the discharge assembly, a heating roller one being connected to the upper side of the discharge electrode, a fixing bolt three being provided inside the fixing bracket, and a printer body being threadedly connected to the rear end of the fixing bolt three.

[0007] Preferably, a heating roller assembly is disposed inside the printer body, and the outer wall of the heating roller assembly passes through the front side of the printer body.

[0008] Preferably, the heating roller is disposed inside the heating roller assembly, the outer wall of the heating roller passes through the front side of the heating roller assembly, and a gear is fixedly connected to the front side of the heating roller, the tooth end of the gear meshing with a pressure roller.

[0009] Preferably, the fixed bracket includes a horizontal bar and a vertical bar fixedly connected to the horizontal bar, and the fixed bracket is T-shaped, with the fixing bolts threadedly connected to the upper end of the vertical bar of the fixed bracket.

[0010] Preferably, a groove is provided on the front side of the printer body, and the inner wall of the groove is slidably connected to the outer wall of the rear end of the charging and discharging assembly.

[0011] Preferably, there are two fixing bolts, which are respectively disposed at both ends of the crossbar of the fixing bracket. A connecting plate is provided on the rear side of the fixing bracket, and the outer wall of the rear end of the fixing bolt passes through the fixing bracket and the connecting plate.

[0012] Preferably, a fixing bolt is threadedly connected to the front side of the printer body, and the outer wall of the fixing bolt is disposed inside the connecting plate.

[0013] Preferably, the printer body has a main and auxiliary motor linkage assembly inside, the outer wall of the main and auxiliary motor linkage assembly passes through the front side of the printer body, and the groove is located in the gap between the main and auxiliary motor linkage assembly and the heating roller assembly.

[0014] This utility model has the following beneficial effects:

[0015] In this invention, the fixing bracket is fixed by fixing bolts two and three, one end of the discharge electrode plate is connected to the heating roller one, the rear end of the discharge assembly is placed in the groove, the fixing bracket is fixed to the printer body by fixing bolt three, and fixing bolt two is threaded through the fixing bracket one so that fixing bolt two abuts against the front side of the discharge assembly, thus completing the installation or replacement of the discharge assembly. This improves the problem of cumbersome installation and replacement steps of the discharge mechanism and the high cost caused by the complexity of its components. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a fixing device for a surface discharge mechanism of a laser printer heating roller, as proposed in this utility model.

[0017] Figure 2 A three-dimensional structural diagram of a heating roller assembly for fixing a surface discharge mechanism of a laser printer heating roller, as proposed in this utility model.

[0018] Figure 3 This is a schematic diagram of the groove structure of a fixing device for the surface discharge mechanism of a laser printer heating roller, as proposed in this utility model.

[0019] Legend:

[0020] 1. Printer body; 2. Pressure roller; 3. Gear 1; 4. Electrode plate; 5. Charging and discharging assembly; 6. Fixing bracket; 7. Fixing bolt 1; 8. Connecting plate; 9. Fixing bolt 2; 10. Fixing bolt 3; 11. Main and auxiliary motor linkage group; 12. Heating roller assembly; 13. Heating roller 1; 14. Groove. Detailed Implementation

[0021] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] Reference Figures 1-3 An embodiment of this utility model provides a fixing device for a surface discharge mechanism of a laser printer heating roller, including a fixing bracket 6, a fixing bolt 9 threadedly connected inside the fixing bracket 6, a discharge assembly 5 disposed at the rear end of the fixing bolt 9, a discharge electrode 4 disposed at the top of the discharge assembly 5, a heating roller 13 connected to the upper side of the discharge electrode 4, a fixing bolt 10 disposed inside the fixing bracket 6, a printer body 1 threadedly connected to the rear end of the fixing bolt 10, a groove 14 disposed on the front side of the printer body 1, and the inner wall of the groove 14 slidably connected to the outer wall of the rear end of the discharge assembly 5.

[0023] In this embodiment, Figure 1 The front, back, left, and right are the orientations. When it is necessary to install or replace the charging and discharging assembly 5, the fixing bolts 29 and 310 are unscrewed, and the fixing bracket 6 is removed. One end of the discharge electrode plate 4 is connected to the heating roller 13. The rear end of the charging and discharging assembly 5 is placed in the groove 14. The crossbar of the fixing bracket 6 is fixed to the printer body 1 by the fixing bolt 310. The fixing bolt 29 is threaded through the fixing bracket 16 and abuts against the front side of the charging and discharging assembly 5. This completes the installation or replacement of the charging and discharging assembly 5, which improves the problem of cumbersome installation and replacement steps of the charging and discharging mechanism and the high cost caused by the complexity of its components.

[0024] Reference Figure 1 and Figure 2 The printer body 1 has a heating roller assembly 12 inside. The outer wall of the heating roller assembly 12 passes through the front side of the printer body 1. A heating roller 13 is disposed inside the heating roller assembly 12. The outer wall of the heating roller 13 passes through the front side of the heating roller assembly 12. A gear 3 is fixedly connected to the front side of the heating roller 13. The tooth end of the gear 3 is meshed with a pressure roller 2.

[0025] Specifically, the heating roller 13 is electrostatically treated by the discharge assembly 5, and the pressure roller 2 and the heating roller 13 are linked by the gear 3. The processed paper is tightly attracted by the electrostatic charge on the surface of the heating roller 13 through the action of the heating roller 13 and the pressure roller 2, ensuring that the paper is closely attached to the heating roller 13 and the pressure roller 2 during the fixing process, thereby ensuring that the toner can be accurately fixed in the correct position on the paper.

[0026] Reference Figure 1 The fixed bracket 6 includes a horizontal bar and a vertical bar that is fixedly connected to the horizontal bar. The fixed bracket 6 is T-shaped. The second fixing bolt 9 is threadedly connected to the upper end of the vertical bar of the fixed bracket 6. There are two fixing bolts 10. The two fixing bolts 10 are respectively set at both ends of the horizontal bar of the fixed bracket 6. A connecting plate 8 is set on the rear side of the fixed bracket 6. The outer wall of the rear end of the fixing bolt 10 passes through the fixed bracket 6 and the connecting plate 8.

[0027] Specifically, the crossbar of the fixing bracket 6 is fixed to the printer body 1 by fixing bolt three 10, and the upper part of the connecting plate 8 is fixed. The discharge assembly 5 is pressed into the groove 14 by fixing bolt two 9, and the discharge assembly 5 is fixed.

[0028] Reference Figure 1 The front side of the printer body 1 is threaded with a fixing bolt 7, and the outer wall of the fixing bolt 7 is set inside the connecting plate 8.

[0029] Specifically, the lower part of the connecting plate 8 is fixed to the front side of the printer body 1 by fixing bolt 7.

[0030] Reference Figures 1-3 The printer body 1 has a main and auxiliary motor linkage group 11 inside. The outer wall of the main and auxiliary motor linkage group 11 passes through the front side of the printer body 1. The groove 14 is set in the gap between the main and auxiliary motor linkage group 11 and the heating roller assembly 12.

[0031] Specifically, during the operation of the device, the main and auxiliary motor linkage group 11 and the other internal components of the printer body 1 complete the preliminary processing of the paper, so that the processed paper enters the heating roller 13 and pressure roller 2 for further compaction and processing, thereby realizing the printing function of the device.

[0032] Working principle: The paper is processed by the internal components of the printer body 1 and the main and auxiliary motor linkage group 11. The electrostatic treatment of the heating roller 13 is performed by the discharge assembly 5. The processed paper is compacted by the heating roller 13 and the pressure roller 2, and the electrostatic effect on the surface of the heating roller 13 will tightly attract the paper. When it is necessary to install or replace the discharge assembly 5, the fixing bolt 29 and the two fixing bolts 30 are unscrewed, and the fixing bracket 6 is removed. One end of the discharge electrode plate 4 is connected to the heating roller 13. The rear end of the discharge assembly 5 is placed in the groove 14. The crossbar of the fixing bracket 6 is fixed to the printer body 1 by the fixing bolts 310. The fixing bolt 29 is threaded through the fixing bracket 16 and abuts against the front side of the discharge assembly 5. This completes the installation or replacement of the discharge assembly 5, which improves the problem of cumbersome installation and replacement steps of the discharge mechanism and the high cost caused by the complexity of its components.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fixing device for a laser printer heating roller surface discharge mechanism, comprising a fixing support (6), characterized in that: The inner part of the fixing support (6) is screwed with a second fixing bolt (9), the rear end of the second fixing bolt (9) is provided with a strike and discharge assembly (5), the top of the strike and discharge assembly (5) is provided with a discharge electrode (4), the upper side of the discharge electrode (4) is connected with a heating roller one (13), the inner part of the fixing support (6) is provided with a third fixing bolt (10), the rear end of the third fixing bolt (10) is screwed with a printer body (1).

2. The fixing device for the surface discharge mechanism of the heating roller of the laser printer according to claim 1, characterized in that: The inner part of the printer body (1) is provided with a heating roller assembly (12), the outer wall of the heating roller assembly (12) passes through the front side of the printer body (1).

3. The fixing device for the surface discharge mechanism of the heating roller of the laser printer according to claim 1, characterized in that: The heating roller one (13) is arranged in the inner part of the heating roller assembly (12), the outer wall of the heating roller one (13) passes through the front side of the heating roller assembly (12), and the front side of the heating roller one (13) is fixedly connected with a gear one (3), the tooth end of the gear one (3) is engagedly connected with a pressure roller (2).

4. The fixing device for the surface discharge mechanism of the heating roller of the laser printer according to claim 1, characterized in that: The fixing support (6) comprises a horizontal rod and a vertical rod fixedly connected with the horizontal rod, and the fixing support (6) is T-shaped, and the second fixing bolt (9) is screwed at the upper end of the vertical rod of the fixing support (6).

5. The fixing device for the surface discharge mechanism of the heating roller of a laser printer according to claim 1, characterized in that: The front side of the printer body (1) is provided with a groove (14), and the inner wall of the groove (14) is slidably connected to the outer wall of the rear end of the strike and discharge assembly (5).

6. The fixing device for the surface discharge mechanism of the heating roller of a laser printer according to claim 5, wherein: The third fixing bolt (10) has two, and the two third fixing bolts (10) are arranged at the two ends of the horizontal rod of the fixing support (6), respectively, the rear side of the fixing support (6) is provided with a connecting plate (8), and the rear end of the third fixing bolt (10) passes through the fixing support (6) and the connecting plate (8).

7. The fixing device for the surface discharge mechanism of the heating roller of a laser printer according to claim 6, characterized in that: The front side of the printer body (1) is screwed with a first fixing bolt (7), and the outer wall of the first fixing bolt (7) is arranged in the inner part of the connecting plate (8).

8. The fixing device for the surface discharge mechanism of the heating roller of a laser printer according to claim 7, characterized in that: The inner part of the printer body (1) is provided with a main and auxiliary motor linkage group (11), the outer wall of the main and auxiliary motor linkage group (11) passes through the front side of the printer body (1), and the groove (14) is arranged at the gap between the main and auxiliary motor linkage group (11) and the heating roller assembly (12).

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