Toner cartridge structure for laser printer

Abstract

The invention relates to a toner cartridge structure for a laser printer applied to the field of printers, the toner cartridge structure comprises an imaging bin and a transfer bin, an OPC roller is installed on the inner wall of the imaging bin, an outer leakage opening is formed in one end of the transfer bin, through the arrangement of a flat nozzle drawing pipe and other devices, carbon powder attached to the surface of a developing roller can be greatly reduced, and the utilization rate of the carbon powder on the developing roller is increased; the surface carbon powder residue after the developing roller is in contact with the OPC roller is reduced, so that when the developing roller is cleaned, the waste of the carbon powder can be reduced to a great extent, the overall service life is greatly prolonged, meanwhile, the carbon powder circularly flows in the powder bin and the transfer printing bin, the caking phenomenon of the carbon powder is avoided, the storage quality of the carbon powder is improved, and the service life of the OPC roller is prolonged. And through the arrangement of the waste box and other devices, when the cleaning roller drives the brush layer to rotate, residual carbon powder on the surface of the covering film can be cleaned, and the carbon powder flowing out of the transfer printing bin is prevented from flowing back to the interior of the transfer printing bin to cause pollution.

Description

Technical Field

[0001] The invention relates to a selenium drum structure, in particular to a selenium drum structure for a laser printer applied in the field of printers. Background Art

[0002] The printer toner cartridge is an important component in a laser printer. When working, the developing roller absorbs toner, and then the toner on the developing roller is absorbed to the surface of the OPC roller, and the area on the OPC roller exposed by the laser beam will absorb toner.

[0003] Chinese patent publication number CN115327875B discloses a printer toner cartridge using a waste toner collection component, in which a waste toner collection bin is provided to clean the residual toner on the surface of the OPC roller to prevent the accumulation of pollutants on the surface of the OPC roller.

[0004] When the OPC roller is contaminated, the surface of the developing roller in contact with the OPC roller will also be contaminated. Only the area on the OPC roller that is exposed by the laser beam will absorb the toner on the developing roller, resulting in a large amount of toner remaining on the surface of the developing roller after it contacts the OPC roller. If the developing roller is cleaned directly, a large amount of toner will be wasted, shortening the overall service life. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that after the developing roller contacts the OPC roller, a large amount of carbon powder will remain on the surface. If the developing roller is cleaned directly, a large amount of carbon powder will be wasted, shortening the overall service life.

[0006] In order to solve the above problems, the present invention provides a toner cartridge structure for a laser printer, comprising an imaging chamber and a transfer chamber, an OPC roller is installed on the inner wall of the imaging chamber, an external leakage port is opened at one end of the transfer chamber, a developing roller is installed on the inner wall of the transfer chamber and one end of the developing roller is located outside the external leakage port, a scraper is fixedly connected to the inner wall of the transfer chamber near one end of the external leakage port, a sealing strip is fixedly connected to the inner wall of the transfer chamber near the other end of the external leakage port, one end of the scraper and one end of the sealing strip are both in contact with the developing roller, a transfer chamber is fixedly connected to the top of the transfer chamber, a powder chamber is fixedly connected to the top of the transfer chamber, a feeding port is fixedly connected to the bottom of the powder chamber, a conveyor belt is installed on the inner wall of the transfer chamber, the upper side of the conveyor belt is in contact with the bottom end of the feeding port, a material guide frame is fixedly connected to the bottom end of the transfer chamber, and the transfer chamber is fixedly connected to the transfer chamber. One end of the feeding belt is located above the material guide frame, one end of the material guide frame extends to the inner side of the transfer bin, a material discharge frame is arranged on the lower side of the material guide frame, a connecting sleeve is fixedly connected between the material guide frame and the material discharge frame, a vibrator is fixedly connected to the side wall of the material discharge frame, a material leveling net is fixedly connected to the inner wall of the bottom end of the material discharge frame, a plurality of flat-mouth suction tubes are fixedly connected to one side of the bottom end of the material discharge frame, a vertical pipe is fixedly connected between the transfer bin and the powder bin, the bottom end of the vertical pipe is located on the inner side of the transfer bin and is fixedly connected to a main pipe, a plurality of branch pipes are fixedly connected to the side wall of the main pipe, the plurality of branch pipes correspond to the plurality of flat-mouth suction tubes one by one, a valve is fixedly connected to the outer wall of the branch pipe, a through pipe is fixedly connected between the branch pipe and the flat-mouth suction tube, an exhaust fan is fixedly connected to the inner wall of the powder bin, and the input end of the exhaust fan is fixedly connected to the top end of the vertical pipe.

[0007] As a further improvement of the present application, the developing roller is composed of two rollers rotatably connected to the transfer chamber, a coating is rotatably connected between the two rollers, the rollers are composed of magnetic material, and the unloading frame is located between the two rollers. Through the above arrangement, the toner is evenly distributed when it falls on the developing roller, providing a better transfer effect.

[0008] As a further improvement of the present application, a plurality of evenly distributed material troughs are provided on the surface of the conveyor belt. Through the above arrangement, when the conveyor belt rotates, the carbon powder in the powder bin can enter the interior of the material trough.

[0009] As a further improvement of the present application, a waste box is fixedly connected to the bottom end of the transfer bin, a cleaning roller is rotatably connected to the inner wall of the waste box, a brush layer is fixedly connected to the outer wall of the cleaning roller, the brush layer is in contact with the coating, and the rotation directions of the cleaning roller and the rotating roller are opposite. Through the above arrangement, the cleaning roller can clean the residual toner on the surface of the coating when driving the brush layer to rotate, thereby preventing the toner flowing out of the transfer bin from flowing back into the interior of the transfer bin and causing pollution.

[0010] As another improvement of the present application, the output end of the exhaust fan is fixedly connected to a blow pipe, the top of the powder bin is fixedly connected to a cover frame, the inner wall of the cover frame is fixedly connected to a filter, the filter is located on the upper side of the blow pipe, the inner wall of the powder bin on one side of the cover frame is fixedly connected to an electric telescopic rod, the output end of the electric telescopic rod is fixedly connected to a brush head, and one end of the brush head is attached to the filter.

[0011] As another improved supplement of the present application, a return air duct is fixedly connected between the powder bin and the transfer bin, and one end of the return air duct close to the powder bin is located on the upper side of the filter.

[0012] As another improved supplement of the present application, a heating wire is fixedly connected to the outer wall of the vertical pipe.

[0013] To sum up, through the setting of devices such as the flat-mouth suction tube, the toner attached to the surface of the developing roller can be greatly reduced, the utilization rate of the toner on the developing roller can be improved, and the surface toner residue after the developing roller contacts the OPC roller can be reduced. In this way, when cleaning the developing roller, the waste of toner can be greatly reduced, and the overall service life can be greatly improved. At the same time, the toner can circulate inside the powder bin and the transfer bin to avoid the agglomeration of toner and improve the storage quality of toner. Through the setting of devices such as the waste box, the cleaning roller can clean the residual toner on the surface of the coating when driving the brush layer to rotate, and prevent the toner flowing out of the transfer bin from flowing back into the transfer bin to cause pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front cross-sectional view of the imaging chamber and the transfer chamber in the first and second embodiments of the present application;

[0015] Figure 2 It is a front cross-sectional view of the waste bin in the first and second embodiments of the present application;

[0016] Figure 3 This is a front cross-sectional view of the material guide frame in the first embodiment of the present application;

[0017] Figure 4 This is a top view of the flat-mouth pipe drawing position in the first embodiment of the present application;

[0018] Figure 5 A diagram showing the relationship between the position of the OPC roller irradiated by the laser beam and the position of the toner on the developing roller in the first embodiment of the present application;

[0019] Figure 6 This is a front cross-sectional view of the filter screen in the second embodiment of the present application;

[0020] Figure 7 This is a front cross-sectional view of the conveyor belt in the first embodiment of the present application.

[0021] Description of the numbers in the figure:

[0022] 1. Imaging chamber; 2. Transfer chamber; 3. OPC roller; 4. External leakage port; 401. Scraper; 402. Sealing strip; 5. Developing roller; 501. Rotating roller; 502. Laminating; 6. Transfer chamber; 7. Powder chamber; 701. Discharging port; 8. Heating wire; 9. Conveyor belt; 901. Material trough; 10. Material guide frame; 11. Discharging frame; 12. Connecting sleeve; 13. Vibrator; 14. Material leveling net; 15. Flat-mouth suction pipe; 16. Vertical pipe; 17. Main pipe; 18. Branch pipe; 1801. Valve; 19. Through pipe; 20. Exhaust fan; 21. Blow pipe; 22. Waste box; 23. Cleaning roller; 2301. Brush layer; 24. Cover frame; 25. Filter; 26. Electric telescopic rod; 27. Brush head; 28. Return air duct. DETAILED DESCRIPTION

[0023] Two implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0024] The first implementation method:

[0025] Figure 1-5 and Figure 7A toner cartridge structure for a laser printer is shown, comprising an imaging chamber 1 and a transfer chamber 2, an OPC roller 3 is installed on the inner wall of the imaging chamber 1, an external leakage port 4 is opened at one end of the transfer chamber 2, a developing roller 5 is installed on the inner wall of the transfer chamber 2 and one end of the developing roller 5 is located outside the external leakage port 4, a scraper 401 is fixedly connected to the inner wall of the transfer chamber 2 near one end of the external leakage port 4, a sealing strip 402 is fixedly connected to the inner wall of the transfer chamber 2 near the other end of the external leakage port 4, one end of the scraper 401 and one end of the sealing strip 402 are both in contact with the developing roller 5, a transfer chamber 6 is fixedly connected to the top of the transfer chamber 2, a powder chamber 7 is fixedly connected to the top of the transfer chamber 6, a feeding port 701 is fixedly connected to the bottom end of the powder chamber 7, a conveyor belt 9 is installed on the inner wall of the transfer chamber 6, the upper side of the conveyor belt 9 is in contact with the bottom end of the feeding port 701, a material guide frame 10 is fixedly connected to the bottom end of the transfer chamber 6, and one end of the conveyor belt 9 is located above the material guide frame 10 One end of the material guide frame 10 extends to the inner side of the transfer bin 2, a material discharge frame 11 is arranged at the lower side of the material guide frame 10, a connecting sleeve 12 is fixedly connected between the material guide frame 10 and the material discharge frame 11, a vibrator 13 is fixedly connected to the side wall of the material discharge frame 11, a material leveling net 14 is fixedly connected to the inner wall of the bottom end of the material discharge frame 11, a plurality of flat-mouth suction pipes 15 are fixedly connected to one side of the bottom end of the material discharge frame 11, and a vertical pipe 16 is fixedly connected between the transfer bin 2 and the powder bin 7. The bottom end of the vertical pipe 16 is located on the inner side of the transfer bin 2 and is fixedly connected to the main pipe 17. The side wall of the main pipe 17 is fixedly connected to a plurality of branch pipes 18. The plurality of branch pipes 18 correspond one to one to the plurality of flat-mouth suction pipes 15. The outer wall of the branch pipe 18 is fixedly connected to a valve 1801. A through pipe 19 is fixedly connected between the branch pipe 18 and the flat-mouth suction pipe 15. The inner wall of the powder bin 7 is fixedly connected to an exhaust fan 20. The input end of the exhaust fan 20 is fixedly connected to the top of the vertical pipe 16.

[0026] When in use, the conveyor belt 9 rotates to transport the carbon powder inside the powder bin 7 to the inside of the guide frame 10 and the discharge frame 11, and the vibrator 13 drives the discharge frame 11 to vibrate. When the discharge frame 11 vibrates, the carbon powder evenly passes through the material leveling net 14 and falls to the surface of the developing roller 5. The rotation of the developing roller 5 drives the carbon powder on the surface to contact the OPC roller 3 after being scraped and leveled by the scraper 401, so that the carbon powder is transferred to the surface of the OPC roller 3.

[0027] Start the exhaust fan 20 to draw the carbon powder dropped from the blanking frame 11 back to the inside of the powder bin 7 through the vertical pipe 16, the main pipe 17, the branch pipe 18, the through pipe 19 and the flat-mouth suction pipe 15. When the valve 1801 is closed, the corresponding flat-mouth suction pipe 15 will no longer draw the carbon powder back to the inside of the powder bin 7. When the valve 1801 is opened, the corresponding flat-mouth suction pipe 15 will draw the carbon powder back to the inside of the powder bin 7.

[0028] The shape of the printing pattern is obtained, and by opening or closing the corresponding valve 1801, the toner dropped from 111 onto the developing roller 5 covers the printing pattern, and the toner does not drop at the position of the non-printing pattern.

[0029] Through the above-mentioned arrangement, the carbon powder attached to the surface of the developing roller 5 can be greatly reduced, the utilization rate of the carbon powder on the developing roller 5 can be improved, and the surface carbon powder residue after the developing roller 5 contacts the OPC roller can be reduced. In this way, when cleaning the developing roller 5, the waste of carbon powder can be greatly reduced, and the overall service life can be greatly improved. At the same time, the carbon powder can circulate inside the powder bin 7 and the transfer bin 2, avoiding the agglomeration of carbon powder and improving the storage quality of carbon powder.

[0030] The surface of the conveyor belt 9 is provided with a plurality of evenly distributed material troughs 901 . With the above arrangement, when the conveyor belt 9 rotates, the carbon powder in the powder bin 7 can enter the interior of the material troughs 901 .

[0031] The bottom end of the transfer bin 2 is fixedly connected to a waste box 22, the inner wall of the waste box 22 is rotatably connected to a cleaning roller 23, the outer wall of the cleaning roller 23 is fixedly connected to a brush layer 2301, the brush layer 2301 is in contact with the coating 502, and the rotation directions of the cleaning roller 23 and the rotating roller 501 are opposite. Through the above arrangement, the cleaning roller 23 can clean the residual toner on the surface of the coating 502 when driving the brush layer 2301 to rotate, thereby preventing the toner flowing out of the transfer bin 2 from flowing back into the interior of the transfer bin 2 and causing pollution.

[0032] The outer wall of the vertical tube 16 is fixedly connected with a heating wire 8. Through the above arrangement, the carbon powder is heated when flowing inside the vertical tube 16 to prevent the carbon powder from getting damp and agglomerating.

[0033] The second implementation method:

[0034] Figure 1-2 and Figure 6 A toner cartridge structure for a laser printer is shown. Different from the first embodiment, the developing roller 5 is composed of two rollers 501 rotatably connected to the transfer chamber 2, a coating 502 is rotatably connected between the two rollers 501, the rollers 501 are composed of magnetic material, and the unloading frame 11 is located between the two rollers 501.

[0035] The toner discharged from the material leveling net 14 can fall onto the coating 502 on the upper plane, and then be transmitted to the position of the rotating roller 501. When the toner is at the position of the rotating roller 501, it is attracted by the rotating roller 501 to prevent the toner from falling, and is finally transferred to the OPC roller 3. Through the above-mentioned setting, the toner is evenly distributed when it falls on the developing roller 5, providing a better transfer effect.

[0036] The output end of the exhaust fan 20 is fixedly connected to a blow pipe 21, the top of the powder bin 7 is fixedly connected to a cover frame 24, the inner wall of the cover frame 24 is fixedly connected to a filter screen 25, the filter screen 25 is located on the upper side of the blow pipe 21, the inner wall of the powder bin 7 on one side of the cover frame 24 is fixedly connected to an electric telescopic rod 26, the output end of the electric telescopic rod 26 is fixedly connected to a brush head 27, one end of the brush head 27 is in contact with the filter screen 25, a return air duct 28 is fixedly connected between the powder bin 7 and the transfer bin 2, and the end of the return air duct 28 close to the powder bin 7 is located on the upper side of the filter screen 25.

[0037] The toner extracted by the exhaust fan 20 is discharged to the surface of the filter 25 through the blow pipe 21. Starting the electric telescopic rod 26 can scrape the toner on the surface of the filter 25 to the inside of the powder bin 7. The air discharged from the blow pipe 21 returns to the inside of the transfer bin 2 through the return air pipe 28, so that the exhaust air of the exhaust fan 20 circulates inside the transfer bin 2 and the powder bin 7 without contacting the outside, thereby preventing the toner in the powder bin 7 from being contaminated.

[0038] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A toner cartridge structure for a laser printer, comprising an imaging chamber (1) and a transfer chamber (2), wherein an OPC roller (3) is installed on the inner wall of the imaging chamber (1), and an external leakage port (4) is opened at one end of the transfer chamber (2), characterized in that: A developing roller (5) is installed on the inner wall of the transfer bin (2), and one end of the developing roller (5) is located outside the external leakage port (4); a scraper (401) is fixedly connected to the inner wall of the transfer bin (2) at one end close to the external leakage port (4); a sealing strip (402) is fixedly connected to the inner wall of the transfer bin (2) at the other end close to the external leakage port (4); one end of the scraper (401) and one end of the sealing strip (402) are both in contact with the developing roller (5); a transfer bin (6) is fixedly connected to the top of the transfer bin (2); a powder bin (7) is fixedly connected to the top of the transfer bin (6); a feed port (701) is fixedly connected to the bottom of the powder bin (7); and the transfer bin (6) is fixedly connected to the powder bin (7). The inner wall of the transfer bin (6) is provided with a conveyor belt (9), the upper side of the conveyor belt (9) is in contact with the bottom end of the material discharge port (701), the bottom end of the transfer bin (6) is fixedly connected with a material guide frame (10), one end of the conveyor belt (9) is located above the material guide frame (10), one end of the material guide frame (10) extends to the inner side of the transfer bin (2), a material discharge frame (11) is provided on the lower side of the material guide frame (10), a connecting sleeve (12) is fixedly connected between the material guide frame (10) and the material discharge frame (11), a vibrator (13) is fixedly connected to the side wall of the material discharge frame (11), and a material leveling net (14) is fixedly connected to the inner wall of the bottom end of the material discharge frame (11); A plurality of flat-mouth suction tubes (15) are fixedly connected to one side of the bottom end of the unloading frame (11); a vertical tube (16) is fixedly connected between the transfer bin (2) and the powder bin (7); the bottom end of the vertical tube (16) is located on the inner side of the transfer bin (2) and is fixedly connected to a main tube (17); a plurality of branch tubes (18) are fixedly connected to the side wall of the main tube (17); the plurality of branch tubes (18) correspond one to one to the plurality of flat-mouth suction tubes (15); a valve (1801) is fixedly connected to the outer wall of the branch tube (18); a through tube (19) is fixedly connected between the branch tube (18) and the flat-mouth suction tube (15); an exhaust fan (20) is fixedly connected to the inner wall of the powder bin (7); an input end of the exhaust fan (20) is fixedly connected to the top end of the vertical tube (16).

2. A laser printer toner cartridge structure according to claim 1, characterized in that: The developing roller (5) is composed of two rotating rollers (501) rotatably connected to the transfer chamber (2); a coating (502) is rotatably connected between the two rotating rollers (501); the rotating rollers (501) are composed of magnetic material; and the unloading frame (11) is located between the two rotating rollers (501).

3. The toner cartridge structure for a laser printer according to claim 1, characterized in that: The surface of the conveyor belt (9) is provided with a plurality of evenly distributed material troughs (901).

4. The toner cartridge structure for a laser printer according to claim 1, characterized in that: The bottom end of the transfer bin (2) is fixedly connected to a waste box (22); the inner wall of the waste box (22) is rotatably connected to a cleaning roller (23); the outer wall of the cleaning roller (23) is fixedly connected to a brush layer (2301); the brush layer (2301) is in contact with the coating (502); and the cleaning roller (23) rotates in opposite directions to the rotating roller (501).

5. The toner cartridge structure for a laser printer according to claim 1, characterized in that: The output end of the exhaust fan (20) is fixedly connected to a blow pipe (21), the top end of the powder bin (7) is fixedly connected to a cover frame (24), the inner wall of the cover frame (24) is fixedly connected to a filter screen (25), the filter screen (25) is located on the upper side of the blow pipe (21), the inner wall of the powder bin (7) located on one side of the cover frame (24) is fixedly connected to an electric telescopic rod (26), the output end of the electric telescopic rod (26) is fixedly connected to a brush head (27), and one end of the brush head (27) is in contact with the filter screen (25).

6. A toner cartridge structure for a laser printer according to claim 5, characterized in that: A return air duct (28) is fixedly connected between the powder bin (7) and the transfer bin (2), and one end of the return air duct (28) close to the powder bin (7) is located on the upper side of the filter screen (25).

7. The toner cartridge structure for a laser printer according to claim 1, characterized in that: A heating wire (8) is fixedly connected to the outer wall of the vertical tube (16).

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