Handheld laser printer

Abstract

The invention discloses a handheld laser printer, relates to the technical field of laser printers, and aims to solve the technical problem that the powdered ink supply amount of the handheld laser printer is difficult to meet the printing requirement of geological exploration work. Which comprises a printer body, the outer side wall of the printer body is sleeved with a support assembly, the bottom of the support assembly is provided with a storage ink bin assembly, the side wall of the storage ink bin assembly is provided with an ink adding assembly, the storage ink bin assembly comprises a storage ink powder box body, the side wall of the storage ink powder box body is provided with an ink adding pipe, and the other side wall of the storage ink powder box body is provided with a device groove. A fan and a pump are arranged in the device groove, the output end of the fan is connected with an air pipe I, the output end of the air pipe I is provided with a communicating pipe, the side wall of the powdered ink storage box body is connected with a powdered ink pipe I, the output end of the powdered ink pipe I is connected with the pump, the output end of the pump is connected with a powdered ink pipe II, and the output end of the powdered ink pipe II is provided with a communicating pipe. The method has the advantages that the endurance capacity of the printer ink powder is improved, and old ink powder is prevented from being gathered into blocks.

Description

Technical Field

[0001] The present invention relates to the technical field of laser printers, and more particularly to a handheld laser printer. Background Art

[0002] A handheld laser printer is a small, portable, handheld laser printing device;

[0003] Compared with traditional desktop or floor-standing printers, handheld laser printers are small in size and light in weight, making them easy to carry to different places. They are usually battery-powered and can communicate with mobile devices (such as mobile phones and tablets) through wireless connections (such as Bluetooth, Wi-Fi, etc.) to receive printing tasks and data. Handheld laser printers have advantages in some specific scenarios, such as the need to print labels, tickets, documents, etc. outdoors, in warehouses, construction sites, etc., but their printing format is usually small, and the printing speed and print quality may not be as good as large office laser printers;

[0004] The working principle of a handheld laser printer is basically the same as that of a traditional laser printer, including the steps of charging, exposure, development, transfer, and fixing. Specifically, the photosensitive drum is filled with negative or positive charges, the laser beam irradiates the photosensitive drum, and the charge of the image part to be printed is eliminated to form an electrostatic latent image. The toner is adsorbed on the photosensitive drum to form a toner image, and the toner image is transferred to the printing paper. The toner particles are solidified on the printing paper by heating to form a stable image. Finally, the residual toner and charge on the photosensitive drum are cleared for the next cycle.

[0005] In geological exploration work, handheld laser printers have certain practical value. Geological explorers often need to conduct field investigations and data collection in the wild environment. Using a handheld laser printer, they can instantly print out labels for collection points, sample identification, field record forms, etc.; for example, when valuable rock samples are found, labels containing sample number, collection location, collection time, geological feature description and other information can be printed out immediately and pasted on the samples to avoid subsequent confusion and information loss. When recording geological profiles, stratigraphic structures and other information, corresponding tables and charts can also be printed out in time to facilitate on-site verification and annotation. In addition, simple maps and orientation identification can also be printed to facilitate the smooth progress of exploration work.

[0006] When using a handheld laser printer in geological exploration, since geological exploration is conducted outdoors, the handheld laser printer carried is usually small in size, light in weight, and easy to carry, which also results in the ink cartridge capacity of the handheld laser printer being smaller than that of a conventional laser printer. The toner of the handheld laser printer is easily used up, and the geological exploration work requires frequent printing, and the toner supply is insufficient, causing inconvenience to the geological exploration work. In view of this, we propose a handheld laser printer. Summary of the invention

[0007] The object of the present invention is to provide a handheld laser printer to solve the technical problem that the toner supply of the handheld laser printer is difficult to meet the printing demand of geological exploration work.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a handheld laser printer, comprising a printer body, a bracket assembly sleeved on the outer wall of the printer body, a reserve ink tank assembly arranged at the bottom of the bracket assembly, and an ink filling assembly arranged on the side wall of the reserve ink tank assembly;

[0009] An ink cartridge is arranged inside the printer body;

[0010] The support assembly includes a protective frame sleeved on the outer side wall of the printer body, a square groove is provided on the side wall of the protective frame, a hand-held rod is connected to the other side wall of the protective frame, a paper outlet slot is provided on the other side wall of the protective frame, and a lifting rod is provided on the top of the protective frame;

[0011] The reserve ink tank assembly comprises a reserve toner box connected to the bottom of the enclosure frame, the side wall of the reserve toner box is provided with an ink filling tube, the inner cavity of the ink filling tube is connected to the inner cavity of the reserve toner box, and the inner cavity of the reserve toner box is used to store reserve toner;

[0012] The side wall of the reserve toner box is provided with a device slot;

[0013] The ink adding assembly comprises a fan and a pump arranged in the device slot, the output end of the fan is connected to an air duct 1, the output end of the air duct 1 is provided with a connecting pipe, the side wall of the reserve toner box is connected to a toner tube 1, the inner cavity of the toner tube 1 is communicated with the inner cavity of the reserve toner box, the output end of the toner tube 1 is connected to the pump, the output end of the pump is connected to a toner tube 2, the output end of the toner tube 2 is provided with the connecting pipe, and the output end of the connecting pipe is connected to the inner cavity of the ink cartridge;

[0014] The connecting tube includes a toner tube three connected to the output end of the toner tube two, and the connecting tube also includes an air duct two connected to the output end of the air duct one. The circumferential outer wall of the toner tube three is connected to a plurality of partitions, and the other side wall of the partition is connected to the circumferential inner wall of the air duct two. The circumferential outer wall of the air duct two is sleeved with ventilation tube one, ventilation tube two and ventilation tube three, and the output end of ventilation tube three is connected to the inner cavity of the ink cartridge.

[0015] Preferably, a paper loading bin is provided on the top of the printer body, and a paper output paperboard is provided on the side wall of the printer body.

[0016] Preferably, a plate slot matching the paper output paper is formed on the top surface of the reserve toner box, a plurality of slide grooves are formed on the top surface of the plate slot, and a slider matching the slide groove is provided at the bottom of the paper output paper.

[0017] Preferably, a piston is disposed on the top of the ink-filling tube, and the bottom of the piston is a cylindrical structure made of rubber material, and the bottom of the piston is plugged into and matched with the inner cavity of the ink-filling tube.

[0018] Preferably, a plurality of ventilation holes are provided on one side wall of the ventilation pipe, holes with the same structure as the ventilation holes are provided on the second side wall and the third side wall of the ventilation pipe, and a filter screen is provided at the outer end of the ventilation hole.

[0019] Preferably, the circumferential inner walls of the ventilation pipes one and three are tightly welded to the circumferential outer wall of the air pipe two.

[0020] Preferably, the two circumferential inner walls of the ventilation pipe are rotatably connected to the two circumferential outer walls of the air duct, one side wall of the ventilation pipe is provided with a circular plug plate, the three side walls of the ventilation pipe are provided with a circular plug plate with the same structure as the one side wall of the ventilation pipe, the two side walls of the ventilation pipe are provided with circular slots that fit with the circular plug plates, the two side walls of the ventilation pipe are rotatably connected to the one side wall of the ventilation pipe through the circular slots, and the two side walls of the ventilation pipe are rotatably connected to the three side walls of the ventilation pipe.

[0021] Preferably, the circumferential outer wall of the ventilation pipe 1 is connected with baffle 1 and baffle 2, a plug post is arranged on the top of the baffle 2, the circumferential outer wall of the ventilation pipe 2 is connected with a dial plate, and a clamping ring matching the dial post is arranged on the top surface of the dial plate.

[0022] Preferably, the paddle is disposed between the baffle 1 and the baffle 2, a plurality of springs are connected to the side wall of the paddle, and the other end of the spring is connected to the side wall of the baffle 2.

[0023] Preferably, the method for using the handheld laser printer comprises the following steps:

[0024] S1, connecting the vent holes, by pushing the clamp ring away from the plug post, at this time, the side wall of the shift plate is acted upon by the elastic force of the spring, and moves toward the baffle plate 1, driving the vent pipe 2 to rotate, until the side wall of the shift plate fits with the side wall of the baffle plate, so that the vent holes inside the vent pipes 1, 2 and 3 are connected;

[0025] S2, blowing air, and then the airflow is transported into the air duct 1 through the fan, and further blown into the inner cavity of the ink cartridge through the air duct 2, blowing the toner on the inner wall of the ink cartridge to prevent the toner from agglomerating into a block, so that the toner is separated and dispersed in the inner cavity of the ink cartridge, and the airflow in the ink cartridge flows out to the external space through the vent hole;

[0026] S3, anti-overflow, the toner is retained in the inner cavity of the ink cartridge through the filter screen in the vent hole;

[0027] S4, adding ink, using the pump to guide the toner in the inner cavity of the reserve toner box through the toner tube one into the toner tube two, further into the toner tube three, and further into the inner cavity of the ink cartridge to complete the ink filling of the ink cartridge.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. The present invention designs a reserve ink bin assembly and uses an ink filling tube to fill toner into the inner cavity of the reserve toner box. When the toner in the ink cartridge of the printer body is used up, the toner in the reserve toner box can be supplied to the ink cartridge, thereby ensuring the normal operation of the printer. The pump is used to guide the toner in the inner cavity of the reserve toner box into toner tube 2 through toner tube 1, further into a connecting tube, and into the inner cavity of the ink cartridge through the connecting tube, thereby completing the ink filling of the ink cartridge, improving the endurance capacity of the printer's toner, meeting the printing needs of geological exploration work, and solving the problem that the toner supply of a handheld laser printer is difficult to meet the printing needs of geological exploration work.

[0030] 2. In the present invention, before adding ink to the ink cartridge, the remaining toner in the inner cavity of the ink cartridge is easily attached to the inner wall of the ink cartridge and accumulated into blocks, which affects the effect of adding ink. The airflow is transported into the air duct one by the fan, and the inner cavity of the air duct one blows the airflow into the inner cavity of the ink cartridge through the connecting pipe, and blows air on the toner on the inner wall of the ink cartridge to make the toner separate and disperse in the inner cavity of the ink cartridge to prevent the toner from agglomerating into blocks. The airflow in the ink cartridge flows out of the external space through the vent hole, and the toner is retained in the inner cavity of the ink cartridge through the filter net in the vent hole, thereby ensuring the use effect of the ink cartridge after adding ink, preventing the old toner from agglomerating into blocks and affecting the use of new toner, and further solving the problem that the remaining old ink is easy to accumulate into blocks.

[0031] 3. The present invention also designs a connecting pipe with a multi-channel structure, through which the inner cavity of the ink cartridge can be blown, vented and ink added at the same time, making the structure more concise and avoiding the need to design connecting pipes separately for blowing, venting and ink addition, which would make the overall structure cumbersome. When in use, the clamping ring is pushed away from the plug post, and the side wall of the paddle plate is acted upon by the spring force to move toward the first baffle plate, driving the second vent pipe to rotate until the side wall of the paddle plate fits with one side wall of the baffle plate, so that the air holes inside the first vent pipe, the second vent pipe and the third vent pipe are connected. When not in use, the air holes are in a blocked state, thereby ensuring the sealing of the ink cartridge and further solving the problem that the air holes easily lead to poor sealing inside the ink cartridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention from a viewing angle;

[0033] Figure 2 It is a schematic diagram of the overall structure of the present invention from a second perspective;

[0034] Figure 3 It is a schematic diagram of the structure of the bracket assembly of the present invention;

[0035] Figure 4 It is a schematic diagram of the structure of the ink storage tank component and the ink adding component of the present invention;

[0036] Figure 5 It is a schematic diagram of the connecting pipe structure of the present invention;

[0037] Figure 6 It is a schematic diagram of the cross-sectional structure of the connecting pipe of the present invention;

[0038] Figure 7 It is a schematic diagram of a partial cross-sectional structure of the air duct of the present invention;

[0039] Figure 8 It is a schematic diagram of the structure of the ventilation pipe 1 and the ventilation pipe 3 of the present invention;

[0040] Fig. 9 It is a structural schematic diagram of the second ventilation pipe of the present invention;

[0041] Fig.10 It is a schematic diagram of the paddle structure of the present invention.

[0042] Description of the numbers in the figure:

[0043] 1. Printer body; 2. Bracket assembly; 3. Ink storage tank assembly; 4. Ink filling assembly;

[0044] 101, ink cartridge; 102, paper loading compartment; 103, paper output cardboard;

[0045] 201, protective frame; 202, hand-held rod; 203, lifting rod; 204, square slot; 205, paper output slot;

[0046] 301, reserve toner box; 302, device slot; 303, plate slot; 304, slide slot; 305, ink adding tube; 306, piston;

[0047] 401, fan; 402, pump; 403, toner tube one; 404, toner tube two; 405, connecting tube; 406, air duct one; 4051, toner tube three; 4052, air duct two; 4053, partition; 4054, vent tube one; 4055, vent tube two; 4056, vent tube three; 4057, circular plug plate; 4058, circular slot; 4059, vent hole; 40510, filter; 40511, baffle one; 40512, baffle two; 40513, dial plate; 40514, retaining ring; 40515, plug column; 40516, spring. DETAILED DESCRIPTION

[0048] like Figures 1 to 10 As shown, the present invention relates to a handheld laser printer, comprising a printer body 1, a bracket assembly 2 is sleeved on the outer wall of the printer body 1, a reserve ink tank assembly 3 is arranged at the bottom of the bracket assembly 2, and an ink adding assembly 4 is arranged on the side wall of the reserve ink tank assembly 3;

[0049] In the embodiment of the present invention, an ink cartridge 101 is arranged inside the printer body 1, the bracket assembly 2 includes a protective frame 201 sleeved on the outer wall of the printer body 1, the side wall of the protective frame 201 is provided with a square groove 204, the other side wall of the protective frame 201 is connected to a hand-held rod 202, the other side wall of the protective frame 201 is provided with a paper outlet slot 205, and a lifting rod 203 is arranged above the protective frame 201. The reserve ink tank assembly 3 includes a reserve toner box 301 connected to the bottom of the protective frame 201, and the side wall of the reserve toner box 301 is provided with an ink filling tube 305, the inner cavity of the ink filling tube 305 is connected to the inner cavity of the reserve toner box 301, and the inner cavity of the reserve toner box 301 is connected to the inner cavity of the reserve toner box 301. Used to store reserve toner, the side wall of the reserve toner box 301 is provided with a device slot 302, the ink adding component 4 includes a fan 401 and a pump 402 arranged in the device slot 302, the output end of the fan 401 is connected to an air duct 1 406, the output end of the air duct 1 406 is provided with a connecting pipe 405, the side wall of the reserve toner box 301 is connected to a toner tube 1 403, the inner cavity of the toner tube 1 403 is connected to the inner cavity of the reserve toner box 301, the output end of the toner tube 1 403 is connected to the pump 402, the output end of the pump 402 is connected to the toner tube 2 404, the output end of the toner tube 2 404 is provided with a connecting pipe 405, and the output end of the connecting pipe 405 is connected to the inner cavity of the ink cartridge 101;

[0050] The present invention designs a reserve ink bin assembly 3 and uses an ink filling tube 305 to fill toner into the inner cavity of a reserve toner box 301. When the toner in the ink cartridge 101 of the printer body 1 is used up, the toner in the reserve toner box 301 can be supplied to the ink cartridge 101, thereby ensuring the normal operation of the printer. By using a pump 402, the toner in the inner cavity of the reserve toner box 301 is guided into a toner tube 2 404 through a toner tube 1 403, further guided into a connecting tube 405, and then guided into the inner cavity of the ink cartridge 101 through the connecting tube 405, thereby completing the ink filling of the ink cartridge 101, improving the endurance capacity of the printer's toner, and meeting the printing needs of geological exploration work.

[0051] In the embodiment of the present invention, the connecting pipe 405 includes a toner tube 3 4051 connected to the output end of the toner tube 2 404, and the connecting pipe 405 also includes an air duct 2 4052 connected to the output end of the air duct 1 406. The circumferential outer wall of the toner tube 3 4051 is connected to a plurality of partitions 4053, and the other side wall of the partition 4053 is connected to the circumferential inner wall of the air duct 2 4052. The circumferential outer wall of the air duct 2 4052 is sleeved with a ventilation tube 1 4054, a ventilation tube 2 4055 and a ventilation tube 3 4056, and the output end of the ventilation tube 3 4056 is connected to the inner cavity of the ink cartridge 101. The side wall of the ventilation tube 1 4054 is provided with a plurality of ventilation holes 4059, and the side walls of the ventilation tube 2 4055 and the side walls of the ventilation tube 3 4056 are provided with a plurality of ventilation holes 4059. A hole with the same structure as the vent hole 4059 is provided, a filter screen 40510 is provided at the outer end of the vent hole 4059, the circumferential inner walls of the vent pipe 1 4054 and the vent pipe 3 4056 are tightly welded to the circumferential outer wall of the air duct 2 4052, the circumferential inner wall of the vent pipe 2 4055 is rotatably connected to the circumferential outer wall of the air duct 2 4052, a circular plug plate 4057 is provided on the side wall of the vent pipe 1 4054, a circular plug plate 4057 with the same structure as the side wall of the vent pipe 1 4054 is provided on the side wall of the vent pipe 3 4056, a circular slot 4058 that fits with the circular plug plate 4057 is provided on the side wall of the vent pipe 2 4055, and the side wall of the vent pipe 2 4055 is connected to the vent pipe 1 4055 through the circular slot 4058. 4 side walls are rotatably connected, the side wall of the second vent pipe 4055 is rotatably connected with the side wall of the third vent pipe 4056, the circumferential outer wall of the vent pipe 1 4054 is connected with the baffle 1 40511 and the baffle 2 40512, the top of the baffle 2 40512 is provided with a plug post 40515, the circumferential outer wall of the vent pipe 2 4055 is connected with a dial plate 40513, the top surface of the dial plate 40513 is provided with a snap ring 40514 matching the plug post 40515, the dial plate 40513 is arranged between the baffle 1 40511 and the baffle 2 40512, the side wall of the dial plate 40513 is connected with a plurality of springs 40516, the other end of the spring 40516 is connected to the side wall of the baffle 2 40512, and when the ink cartridge 101 is filled with ink. Before, the remaining toner in the inner cavity of the ink cartridge 101 is easy to adhere to the inner wall of the ink cartridge 101 and accumulate into blocks, which affects the effect of adding ink. The airflow is transported into the air duct 406 through the fan 401, and the inner cavity of the air duct 406 blows the airflow into the inner cavity of the ink cartridge 101 through the connecting pipe 405, and blows air to the toner on the inner wall of the ink cartridge 101, so that the toner is separated and dispersed in the inner cavity of the ink cartridge 101, and the toner is prevented from agglomerating into blocks. The airflow in the ink cartridge 101 flows out of the external space through the vent 4059, and the toner is retained in the inner cavity of the ink cartridge 101 through the filter 40510 in the vent 4059, thereby ensuring the use effect of the ink cartridge 101 after adding ink, and preventing the old toner from agglomerating into blocks and affecting the use of new toner.

[0052] The present invention also designs a connecting pipe 405 with a multi-channel structure, through which the inner cavity of the ink cartridge 101 can be blown, vented and ink added at the same time, making the structure more concise and avoiding the need to design separate connecting pipes for blowing, venting and ink addition, which would make the overall structure cumbersome. When in use, the retaining ring 40514 is pushed away from the plug post 40515. At this time, the side wall of the shift plate 40513 is acted upon by the elastic force of the spring 40516 and moves toward the baffle plate 1 40511, driving the second vent pipe 4055 to rotate until the side wall of the shift plate 40513 fits with the side wall of the baffle plate 1 40511, so that the vent holes 4059 inside the vent pipe 1 4054, the second vent pipe 4055 and the third vent pipe 4056 are connected. When not in use, the vent holes 4059 are in a blocked state, thereby ensuring the sealing of the ink cartridge 101.

[0053] As another embodiment of the present invention, a paper loading bin 102 is provided on the top of the printer body 1, a paper output paperboard 103 is provided on the side wall of the printer body 1, a board slot 303 matching the paper output paperboard 103 is provided on the top surface of the reserve toner box 301, a plurality of slide grooves 304 are provided on the top surface of the board slot 303, and a slider matching the slide groove 304 is provided at the bottom of the paper output paperboard 103, so that the printed paper can be supported by the paper output paperboard 103 to avoid falling to the ground.

[0054] As another embodiment of the present invention, a piston 306 is arranged on the top of the ink filling tube 305, and the bottom of the piston 306 is a cylindrical structure made of rubber material. The bottom of the piston 306 is plugged into the inner cavity of the ink filling tube 305. By inserting the rubber piston 306 into the internal pipeline of the ink filling tube 305, the ink filling tube 305 can be better sealed, thereby ensuring the sealing of the reserve toner box 301.

[0055] Working principle: This embodiment provides a handheld laser printer. When in use, the clamp ring 40514 is pushed away from the plug post 40515. At this time, the side wall of the paddle plate 40513 is acted upon by the elastic force of the spring 40516 to move toward the baffle plate 1 40511, driving the vent pipe 2 4055 to rotate until the side wall of the paddle plate 40513 fits with the side wall of the baffle plate 1 40511, so that the vent holes 4059 inside the vent pipe 1 4054, the vent pipe 2 4055 and the vent pipe 3 4056 are connected. Then, the airflow is transported into the vent pipe 1 406 through the fan 401, and further through the vent pipe 2 405 2 Blow toward the inner cavity of the ink cartridge 101, blow air away the toner on the inner wall of the ink cartridge 101 to prevent the toner from agglomerating into lumps, and make the toner separate and disperse in the inner cavity of the ink cartridge 101. The airflow in the ink cartridge 101 flows out of the external space through the vent 4059, and the toner is retained in the inner cavity of the ink cartridge 101 through the filter 40510 in the vent 4059. By working with the pump 402, the toner in the inner cavity of the reserve toner box 301 is guided into the toner tube 2 404 through the toner tube 1 403, further guided into the toner tube 3 4051, and further guided into the inner cavity of the ink cartridge 101, thereby completing the ink filling of the ink cartridge 101.

[0056] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A handheld laser printer, characterized in that: The printer comprises a printer body (1), a support assembly (2) sleeved on the outer wall of the printer body (1), an ink reserve tank assembly (3) arranged at the bottom of the support assembly (2), and an ink filling assembly (4) arranged on the side wall of the ink reserve tank assembly (3); An ink cartridge (101) is arranged inside the printer body (1); The support assembly (2) comprises a protective frame (201) sleeved on the outer wall of the printer body (1), a side wall of the protective frame (201) is provided with a square groove (204), the other side wall of the protective frame (201) is connected with a hand-held rod (202), the other side wall of the protective frame (201) is provided with a paper output slot (205), and a lifting rod (203) is arranged above the protective frame (201); The reserve ink tank assembly (3) comprises a reserve toner box (301) connected to the bottom of the enclosure frame (201); a side wall of the reserve toner box (301) is provided with an ink filling tube (305); the inner cavity of the ink filling tube (305) is connected to the inner cavity of the reserve toner box (301); and the inner cavity of the reserve toner box (301) is used to store reserve toner; The side wall of the reserve toner box (301) is provided with a device slot (302); The ink adding component (4) comprises a fan (401) and a pump (402) arranged in the device slot (302); the output end of the fan (401) is connected to an air duct 1 (406); the output end of the air duct 1 (406) is provided with a connecting pipe (405); the side wall of the reserve toner box (301) is connected to a toner tube 1 (403); the inner cavity of the toner tube 1 (403) is connected to the inner cavity of the reserve toner box (301); the output end of the toner tube 1 (403) is connected to the pump (402); the output end of the pump (402) is connected to a toner tube 2 (404); the output end of the toner tube 2 (404) is provided with the connecting pipe (405); the output end of the connecting pipe (405) is connected to the inner cavity of the ink cartridge (101); The connecting tube (405) comprises a toner tube three (4051) connected to the output end of the toner tube two (404), and the connecting tube (405) further comprises an air duct two (4052) connected to the output end of the air duct one (406). The circumferential outer wall of the toner tube three (4051) is connected to a plurality of partitions (4053), and the other side wall of the partition (4053) is connected to the circumferential inner wall of the air duct two (4052). The circumferential outer wall of the air duct two (4052) is sleeved with a ventilation tube one (4054), a ventilation tube two (4055) and a ventilation tube three (4056), and the output end of the ventilation tube three (4056) is connected to the inner cavity of the ink cartridge (101).

2. The handheld laser printer according to claim 1, characterized in that: A paper loading bin (102) is arranged on the top of the printer body (1), and a paper output paperboard (103) is arranged on the side wall of the printer body (1).

3. The handheld laser printer according to claim 2, characterized in that: The top surface of the reserve toner box (301) is provided with a plate slot (303) matching the paper board (103), the top surface of the plate slot (303) is provided with a plurality of slide slots (304), and the bottom of the paper board (103) is provided with a sliding block matching the slide slots (304).

4. The handheld laser printer according to claim 3, characterized in that: A piston (306) is arranged on the top of the ink-filling tube (305); the bottom of the piston (306) is a cylindrical structure made of rubber material; the bottom of the piston (306) is plugged into and matched with the inner cavity of the ink-filling tube (305).

5. The handheld laser printer according to claim 4, characterized in that: The side wall of the ventilation pipe one (4054) is provided with a plurality of ventilation holes (4059), the side wall of the ventilation pipe two (4055) and the side wall of the ventilation pipe three (4056) are provided with holes having the same structure as the ventilation holes (4059), and a filter net (40510) is provided at the outer end of the ventilation hole (4059).

6. The handheld laser printer according to claim 5, characterized in that: The circumferential inner walls of the ventilation pipe one (4054) and the ventilation pipe three (4056) are tightly welded to the circumferential outer wall of the air pipe two (4052).

7. The handheld laser printer according to claim 6, characterized in that: The circumferential inner wall of the ventilation pipe 2 (4055) is rotatably connected to the circumferential outer wall of the air duct 2 (4052); the side wall of the ventilation pipe 1 (4054) is provided with a circular plug plate (4057); the side wall of the ventilation pipe 3 (4056) is provided with a circular plug plate (4057) having the same structure as the side wall of the ventilation pipe 1 (4054); the side wall of the ventilation pipe 2 (4055) is provided with a circular slot (4058) that matches the circular plug plate (4057); the side wall of the ventilation pipe 2 (4055) is rotatably connected to the side wall of the ventilation pipe 1 (4054) through the circular slot (4058); the side wall of the ventilation pipe 2 (4055) is rotatably connected to the side wall of the ventilation pipe 1 (4054); and the side wall of the ventilation pipe 2 (4055) is rotatably connected to the side wall of the ventilation pipe 3 (4056).

8. The handheld laser printer according to claim 7, characterized in that: The circumferential outer wall of the ventilation pipe one (4054) is connected to baffle one (40511) and baffle two (40512), and a plug post (40515) is arranged on the top of the baffle two (40512). The circumferential outer wall of the ventilation pipe two (4055) is connected to a dial plate (40513), and a retaining ring (40514) matching the dial plate (40515) is arranged on the top surface of the dial plate (40513).

9. The handheld laser printer according to claim 8, characterized in that: The dial plate (40513) is arranged between the baffle plate 1 (40511) and the baffle plate 2 (40512), and the side wall of the dial plate (40513) is connected to a plurality of springs (40516), and the other end of the spring (40516) is connected to the side wall of the baffle plate 2 (40512).

10. The method for using a handheld laser printer according to claim 9, characterized in that: The following steps are involved: S1, connecting the vent holes, by pushing the clamp ring (40514) away from the plug post (40515), the side wall of the shift plate (40513) is acted upon by the elastic force of the spring (40516) to move toward the baffle plate 1 (40511), driving the vent pipe 2 (4055) to rotate until the side wall of the shift plate (40513) fits with the side wall of the baffle plate 1 (40511), so that the vent holes (4059) inside the vent pipe 1 (4054), the vent pipe 2 (4055) and the vent pipe 3 (4056) are connected; S2, blowing air, and then conveying airflow into the first air duct (406) through the fan (401), and further blowing air into the inner cavity of the ink cartridge (101) through the second air duct (4052), blowing air away the toner on the inner wall of the ink cartridge (101), preventing the toner from agglomerating into a mass, and causing the toner to separate and disperse in the inner cavity of the ink cartridge (101), and the airflow in the ink cartridge (101) flows out to the external space through the vent hole (4059); S3, preventing overflow, retaining the toner in the inner cavity of the ink cartridge (101) through the filter screen (40510) in the vent (4059); S4, adding ink, using the pump (402) to guide the toner in the inner cavity of the reserve toner box (301) through the toner tube 1 (403) into the toner tube 2 (404), further into the toner tube 3 (4051), and further into the inner cavity of the ink cartridge (101), thereby completing the ink addition to the ink cartridge (101).

Images