Powder bin structure of laser printer

Abstract

The utility model discloses a toner cartridge structure of a laser printer, relates to the technical field of toner cartridges, and aims to solve the technical problems that carbon powder is easy to accumulate into blocks in a toner cartridge and is non-uniformly distributed, and the printing efficiency and quality are reduced, the toner cartridge structure comprises a printer main body, a toner cartridge assembly is arranged in the printer main body, and the toner cartridge assembly comprises a toner cartridge, a transmission assembly, a drum frame and a photosensitive drum, a transmission assembly is arranged on the side wall of the photosensitive drum; a developing roller is arranged on the outer side wall of the powder box; a carbon powder bin is formed in an inner cavity of the powder box; a rotating part is arranged in the carbon powder bin; a plurality of scrapers are connected to the circumferential side wall of the rotating column, a carbon powder conveying channel is formed in the space of the inner wall of each scraper, and a plurality of scattering strips are arranged in each carbon powder conveying channel. The carbon powder conveying device has the advantages that carbon powder is prevented from being blocked or accumulated into blocks, the carbon powder output smoothness is guaranteed, and the printing efficiency and quality are improved.

Description

Technical Field

[0001] This invention relates to the field of toner cartridge technology, and more specifically, to the toner cartridge structure of a laser printer. Background Technology

[0002] A laser printer is a printing output device that combines laser scanning technology and electrophotographic technology. The toner cartridge structure of a laser printer is a key part of the printer used to store toner. Its design directly affects the printer's print quality and performance. Its main function is to load toner. During the printing process, the toner is attracted to the paper through electrostatic attraction, thereby completing the printing task.

[0003] A toner cartridge typically consists of a plastic casing, toner, a photosensitive drum, and a scraper. The photosensitive drum is the core component of the toner cartridge, responsible for transferring toner onto the paper, while the scraper is used to clean excess toner from the photosensitive drum to ensure print quality.

[0004] During laser printing, the photosensitive drum is first charged and exposed to the laser beam, forming an electrostatic image corresponding to the printed content. Then, toner is attracted to the photosensitive drum by electrostatic attraction, forming a toner image. Finally, as the paper passes through the toner cartridge, the toner image is transferred to the paper and fixed on the paper through a heating and fixing process. As the number of prints increases, the toner in the cartridge will gradually decrease. When the toner is used up, a new toner cartridge needs to be replaced.

[0005] Existing laser printer toner cartridge structures typically utilize a developing roller with a charged surface to draw toner from the cartridge and transfer it to the photosensitive drum. However, prolonged toner accumulation inside the cartridge can lead to clumps and uneven distribution, affecting the developing roller's ability and efficiency in toner adsorption, thus reducing print efficiency and quality. Therefore, we propose a new toner cartridge structure for laser printers.

[0006] new content

[0007] The purpose of this invention is to provide a toner cartridge structure for laser printers to solve the technical problem that toner easily accumulates in clumps in the toner cartridge, resulting in uneven distribution and reduced printing efficiency and quality.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a toner cartridge structure for a laser printer, comprising a printer body, wherein a toner cartridge assembly is provided inside the printer body, and the toner cartridge assembly includes a toner box, a transmission assembly, a drum frame, and a photosensitive drum;

[0009] The powder box is arranged above the drum frame, the photosensitive drum is arranged at the bottom of the drum frame, and the transmission assembly is arranged on the side wall of the photosensitive drum;

[0010] The top surface of the drum frame is provided with an insert plate, and the powder box is provided below the insert plate;

[0011] A rotating shaft is connected to the side wall of the photosensitive drum;

[0012] The transmission assembly includes a gear one connected to one side wall of the rotating shaft, a gear two meshing at the output end of the gear one, a rotating shaft two connected to the side wall of the gear two, a gear three disposed on the circumferential side wall of the rotating shaft two, a gear four meshing at the output end of the gear three, and a gear five meshing at the output end of the gear four.

[0013] The outer wall of the toner cartridge is provided with a developing roller, the top surface of the toner cartridge is connected with a protruding plate, the bottom surface of the toner cartridge is connected with multiple protruding plates, the other outer wall of the toner cartridge is provided with a cover plate, the side wall of the cover plate is provided with a toner filling port, and the inner cavity of the toner cartridge forms a toner compartment.

[0014] The toner chamber is equipped with a rotating component inside, and the developing roller and developing blade are provided at the outlet of the toner chamber.

[0015] The rotating component includes a rotating shaft four connected to the side wall of the gear five. A rotating column is connected to the side wall of the rotating shaft four. Multiple scrapers are connected to the circumferential side wall of the rotating column. The inner wall space of the scrapers forms a toner transmission channel. Multiple dispersing strips are provided in the toner transmission channel.

[0016] Preferably, the top surface of the drum frame has two sets of slots, and the bottom of the insert plate is connected to two sets of pins that match the slots. The bottom surface of the insert plate is inserted into the top surface of the drum frame through the pins.

[0017] Preferably, the developing roller is connected to a rotating shaft three on its side wall, the rotating shaft three has a square groove on its side wall, the rotating shaft two has a protrusion structure that matches the square groove on its side wall, and the rotating shaft three is inserted into the rotating shaft two through the square groove.

[0018] Preferably, the bottom surface of the insert plate is provided with a groove that matches the first convex plate, and the bottom surface of the drum frame is provided with a plurality of slots that correspond to the second convex plate.

[0019] Preferably, the outer wall of the scraper is an arc-shaped curved surface structure, and the position where the toner compartment contacts the outer wall of the scraper is set as an arc-shaped curved inner wall structure.

[0020] Preferably, the scraper head is configured with a flat blade-like structure for removing toner adhering to the inner wall of the toner compartment.

[0021] Preferably, the plurality of the dispersing strips are arranged in an array, and the sidewalls of the dispersing strips are rotatably connected to a plurality of dispersing columns.

[0022] Preferably, the dispersing strip is an arc-shaped thin sheet structure, and the dispersing column is a thin strip cylindrical structure.

[0023] Preferably, the circumferential sidewall of the dispersing column is provided with a plurality of cone blocks, the cone blocks being conical spiky structures, and three of the cone blocks are arranged in a circular array on the circumferential sidewall of the dispersing column.

[0024] Preferably, the method of using the toner cartridge structure of the laser printer includes the following steps:

[0025] S1. Add toner: Add toner into the toner cartridge through the toner inlet;

[0026] S2. Installation: Insert the multiple protruding plates at the bottom of the toner cartridge into the corresponding slots on the bottom surface of the drum unit. At the same time, insert the rotating shaft three on the side wall of the developing roller into the rotating shaft two through the square slot. Further, insert the insert pins at the bottom of the insert plate into the slots on the top surface of the drum unit to complete the installation and fixation of the toner cartridge. Then insert the toner hopper assembly into the printer body for use.

[0027] S3. Print: Start the printer and begin printing. The internal transmission mechanism of the printer rotates the photosensitive drum. The rotation of the photosensitive drum drives gear one to rotate, which in turn drives gears two, three, four, and five to rotate. Gear three drives the developing roller to rotate, and gear five drives multiple scrapers inside the toner cartridge to rotate around the rotating column. As the scrapers rotate, they cause the toner to move up and down inside the toner cartridge, making the toner evenly distributed and carrying it to the toner cartridge outlet. The developing roller then picks up and transfers the toner to the photosensitive drum, which then transfers it to the paper for printing.

[0028] Compared with the prior art, the beneficial effects of this new technology are:

[0029] 1. This new type of printer uses a transmission mechanism inside the printer body to drive the photosensitive drum to rotate. When the photosensitive drum rotates, it drives gear one to rotate, which in turn drives gears two, three, four, and five to rotate. Gear three drives the developing roller to rotate, and gear five drives multiple scrapers inside the toner cartridge to rotate around the rotating column. When the scrapers rotate, they cause the toner to move up and down inside the toner cartridge, making the toner evenly distributed and preventing clogging or accumulation. The toner is then carried to the toner cartridge outlet, where the developing roller absorbs and transfers the toner to the photosensitive drum. The photosensitive drum then transfers the toner to the paper for printing. This ensures smooth toner output, improves printing efficiency and quality, and solves the problem of toner easily accumulating in the toner cartridge, resulting in uneven distribution and reduced printing efficiency and quality.

[0030] 2. This new design also incorporates a curved, arc-shaped scraper structure, where the three scrapers work together to form a closed circular loop. This, combined with the curved inner wall structure of the toner cartridge, allows the three scrapers to effectively guide the toner within the cartridge in a circular motion as they rotate. During this motion, the toner, under its own weight, continuously falls within the toner transport channel of the scraper, striking the inner wall of the scraper and dispersing the toner. This further improves the uniform distribution of toner within the cartridge, preventing clogging or clumping, and effectively solving the problem of toner easily accumulating in the cartridge, resulting in uneven distribution and reduced printing efficiency and quality.

[0031] 3. This new invention also incorporates multiple dispersing strips within the toner transport channel. As the toner continuously falls within the toner transport channel of the scraper, it impacts the dispersing strips, which then divide the toner. Furthermore, the dispersing strips are designed with rotatable dispersing columns. Each column has multiple conical spikes on its circumferential sidewalls. When a large amount of toner impacts the dispersing column, it causes the column to rotate, further penetrating the conical spikes into the gaps between the toner particles, thus separating them and further dispersing the toner. This prevents the toner from clumping together, improving toner uniformity and addressing the problem of toner easily accumulating in the toner cartridge, resulting in uneven distribution and reduced printing efficiency and quality. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of this novel invention;

[0033] Figure 2 This is a schematic diagram of the structure of the powder hopper assembly of this novel invention from one perspective.

[0034] Figure 3 This is a second-view schematic diagram of the structure of the powder hopper assembly of this novel invention;

[0035] Figure 4 This is a schematic diagram of the transmission component structure of this novel invention;

[0036] Figure 5 This is a schematic diagram of the disassembled structure of the powder hopper assembly of this novel invention;

[0037] Figure 6 This is a schematic diagram of the insert structure of this novel invention;

[0038] Figure 7 This is a schematic diagram of the drum frame structure of this novel invention;

[0039] Figure 8 This is a schematic diagram of the external structure of the powder box of this novel invention;

[0040] Figure 9 This is a schematic diagram of the internal structure of the powder box of this novel invention;

[0041] Figure 10 This is a schematic diagram of the scraper structure of this novel invention;

[0042] Figure 11 This is a schematic diagram of the disintegration strip structure of this novel invention;

[0043] Figure 12 This is a schematic diagram of the novel disintegrating column and cone block structure.

[0044] Explanation of the labels in the diagram:

[0045] 1. Printer body; 2. Toner cartridge assembly; 3. Toner box; 4. Transmission assembly; 5. Drum frame; 6. Photosensitive drum;

[0046] 301. Developing roller; 302. Rotating shaft three; 303. Square groove; 304. Convex plate one; 305. Convex plate two; 306. Cover plate; 307. Toner inlet; 308. Toner hopper; 309. Rotating component; 310. Developing doctor blade; 3091. Rotating shaft four; 3092. Rotating column; 3093. Scraper; 3094. Toner transfer channel; 3095. Dispersing bar; 3096. Dispersing column; 3097. Conical block;

[0047] 401. Gear 1; 402. Gear 2; 403. Gear 3; 404. Gear 4; 405. Gear 5; 406. Shaft 2;

[0048] 501. Insert plate; 502. Insert post; 503. Slot;

[0049] 601. Rotary shaft one. Detailed Implementation

[0050] like Figures 1 to 12 As shown, the toner cartridge structure of the laser printer involved in this invention includes a printer body 1, a toner cartridge assembly 2 is provided inside the printer body 1, and the toner cartridge assembly 2 includes a toner box 3, a transmission assembly 4, a drum frame 5 and a photosensitive drum 6.

[0051] In this embodiment of the invention, a toner cartridge 3 is disposed above the drum frame 5, a photosensitive drum 6 is disposed at the bottom of the drum frame 5, a transmission assembly 4 is disposed on the side wall of the photosensitive drum 6, an insert plate 501 is disposed on the top surface of the drum frame 5, the toner cartridge 3 is disposed below the insert plate 501, a rotating shaft 601 is connected to the side wall of the photosensitive drum 6, and the transmission assembly 4 includes a gear 401 connected to the side wall of the rotating shaft 601, a gear 402 meshing with the output end of the gear 401, a rotating shaft 406 connected to the side wall of the gear 402, a gear 403 disposed on the circumferential side wall of the rotating shaft 406, a gear 404 meshing with the output end of the gear 403, and a gear 405 meshing with the output end of the gear 404. The outer wall of the toner cartridge 3 is provided with a developing roller 301. The top surface of the toner cartridge 3 is connected with a first protrusion 304. The bottom surface of the toner cartridge 3 is connected with multiple second protrusions 305. The other outer wall of the toner cartridge 3 is provided with a cover plate 306. The side wall of the cover plate 306 is provided with a toner inlet 307. The inner cavity of the toner cartridge 3 forms a toner chamber 308. The toner chamber 308 is provided with a rotating component 309. The outlet of the toner chamber 308 is provided with a developing roller 301 and a developing blade 310. The rotating component 309 includes a fourth rotating shaft 3091 connected to the side wall of a fifth gear 405. The side wall of the fourth rotating shaft 3091 is connected with a rotating column 3092. The circumferential side wall of the rotating column 3092 is connected with three blades 3093.

[0052] This new invention uses a transmission mechanism inside the printer body 1 to drive the photosensitive drum 6 to rotate. When the photosensitive drum 6 rotates, it drives gear 1 401 to rotate, which in turn drives gears 2 402, 3 403, 4 404, and 5 405 to rotate. Gear 3 403 drives the developing roller 301 to rotate, and gear 5 405 drives multiple scrapers 3093 inside the toner cartridge 308 to rotate around the rotating column 3092. When the scrapers 3093 rotate, they cause the toner to move up and down inside the toner cartridge 308, making the toner evenly distributed and preventing clogging or accumulation. The toner is then carried to the outlet of the toner cartridge 308, where it is adsorbed and transferred to the photosensitive drum 6 by the developing roller 301. The photosensitive drum 6 then transfers the toner to the paper for printing, ensuring smooth toner output and improving printing efficiency and quality.

[0053] In this embodiment of the invention, the inner wall space of the scraper 3093 forms a toner transport channel 3094, the outer wall of the scraper 3093 is an arc-shaped curved surface structure, the position of the toner bin 308 in contact with the outer wall of the scraper 3093 is set as an arc-shaped curved inner wall structure, and the scraper head of the scraper 3093 is set as a flat blade-shaped structure for scraping off the toner adhering to the inner wall of the toner bin 308.

[0054] This new design incorporates a circular arc-shaped curved surface structure for the scraper 3093. The three scrapers 3093 work together to form a closed circular loop. Combined with the circular arc-shaped curved inner wall structure of the toner hopper 308, the three scrapers 3093 effectively guide the toner within the toner hopper 308 along a circular path as they rotate. During this movement, the toner, under its own weight, continuously falls within the toner transport channel 3094 of the scraper 3093, striking the inner wall of the scraper 3093 and dispersing the toner. This further improves the uniform distribution of toner within the toner hopper 308, preventing blockages or clumping.

[0055] In another embodiment of this invention, a plurality of dispersing strips 3095 are provided in the toner transmission channel 3094. The plurality of dispersing strips 3095 are arranged in an array. A plurality of dispersing columns 3096 are rotatably connected to the sidewalls of the dispersing strips 3095. The dispersing strips 3095 are arc-shaped thin sheet structures. The dispersing columns 3096 are thin strip cylindrical structures. A plurality of cones 3097 are provided on the circumferential sidewalls of the dispersing columns 3096. The cones 3097 are conical spike structures. Every three cones 3097 are arranged in a circular array on the circumferential sidewalls of the dispersing columns 3096.

[0056] This novel invention incorporates multiple dispersing strips within the toner transport channel. As toner continuously falls within the toner transport channel 3094 of the scraper 3093, it impacts the dispersing strips, which then divide the toner. Furthermore, the dispersing strips are designed with rotatable dispersing columns 3096. The circumferential sidewalls of the dispersing columns 3096 are equipped with multiple conical spike-like structures 3097. When a large amount of toner impacts the dispersing columns 3096, it causes the columns to rotate, further penetrating the conical spike-like structures 3097 into the gaps between the toner particles, thus separating them and further dispersing the toner, making it less likely to clump together and improving the uniformity of the toner.

[0057] In another embodiment of this invention, the top surface of the drum frame 5 has two sets of slots 503, and the bottom of the insert plate 501 is connected to two sets of insert posts 502 that match the slots 503. The bottom surface of the insert plate 501 is inserted into the top surface of the drum frame 5 through the insert posts 502. The side wall of the developing roller 301 is connected to a rotating shaft 302, and the side wall of the rotating shaft 302 has a square groove 303. The side wall of the rotating shaft 406 has a protrusion structure that matches the square groove 303. The rotating shaft 302 is inserted into the rotating shaft 406 through the square groove 303. The bottom surface of the insert plate 501 has a groove that matches the protrusion 304. The bottom of the drum frame 5... The surface has multiple slots corresponding to the second convex plate 305. This new device inserts the multiple second convex plates 305 at the bottom of the toner cartridge 3 into the corresponding slots on the bottom surface of the drum frame 5. At the same time, the rotating shaft 302 on the side wall of the developing roller 301 is inserted into the rotating shaft 406 through the square slot 303. Furthermore, the insert post 502 at the bottom of the insert plate 501 is inserted into the slot 503 on the top surface of the drum frame 5 to complete the installation and fixation of the toner cartridge 3. Then, the toner hopper assembly 2 is inserted into the printer body 1 for use. This device is easy to install and disassemble, and makes the maintenance and replacement of the toner hopper simpler and faster.

[0058] Working Principle: This embodiment provides a toner cartridge structure for a laser printer. During use, toner is added to the toner cartridge 3 through the toner filling port 307. Multiple protruding plates 305 at the bottom of the toner cartridge 3 are inserted into corresponding slots on the bottom surface of the drum unit 5. Simultaneously, the rotating shaft 302 on the side wall of the developing roller 301 is inserted into the rotating shaft 406 through the square slot 303. Further, the insert pins 502 at the bottom of the insert plate 501 are inserted into the slots 503 on the top surface of the drum unit 5, completing the installation and fixing of the toner cartridge 3. Then, the toner cartridge assembly 2 is inserted into the printer body 1 for use. The printer body 1 is started to begin printing. The transmission mechanism inside the printer body 1... The photosensitive drum 6 rotates, which drives gear 1 401 to rotate, further driving gears 2 402, 3 403, 4 404 and 5 405 to rotate. Gear 3 403 drives the developing roller 301 to rotate, and gear 5 405 drives multiple scrapers 3093 inside the toner cartridge 308 to rotate around the rotating column 3092. When the scrapers 3093 rotate, they cause the toner to float up and down inside the toner cartridge 308, making the toner evenly distributed and carrying the toner to the outlet of the toner cartridge 308. The developing roller 301 absorbs and transfers the toner to the photosensitive drum 6, and the photosensitive drum 6 transfers it to the paper for printing.

[0059] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this invention based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. The toner cartridge structure of a laser printer, characterized in that, The printer includes a printer body (1), and a toner cartridge assembly (2) is provided inside the printer body (1). The toner cartridge assembly (2) includes a toner box (3), a transmission assembly (4), a drum frame (5), and a photosensitive drum (6). The powder box (3) is provided above the drum frame (5), the photosensitive drum (6) is provided at the bottom of the drum frame (5), and the transmission assembly (4) is provided on the side wall of the photosensitive drum (6). The top surface of the drum frame (5) is provided with a plate (501), and the powder box (3) is provided below the plate (501). The photosensitive drum (6) has a rotating shaft (601) connected to its side wall. The transmission assembly (4) includes a gear 1 (401) connected to the side wall of the rotating shaft 1 (601), a gear 2 (402) meshing at the output end of the gear 1 (401), a rotating shaft 2 (406) connected to the side wall of the gear 2 (402), a gear 3 (403) provided on the circumferential side wall of the rotating shaft 2 (406), a gear 4 (404) meshing at the output end of the gear 3 (403), and a gear 5 (405) meshing at the output end of the gear 4 (404). The outer wall of the powder box (3) is provided with a developing roller (301), the top surface of the powder box (3) is connected with a protruding plate (304), the bottom surface of the powder box (3) is connected with multiple protruding plates (305), the other outer wall of the powder box (3) is provided with a cover plate (306), the side wall of the cover plate (306) is provided with a powder filling port (307), and the inner cavity of the powder box (3) forms a toner chamber (308). The toner cartridge (308) is equipped with a rotating component (309), and the developing roller (301) and developing blade (310) are provided at the outlet of the toner cartridge (308). The rotating component (309) includes a rotating shaft four (3091) connected to the side wall of the gear five (405). The side wall of the rotating shaft four (3091) is connected to a rotating column (3092). The circumferential side wall of the rotating column (3092) is connected to multiple scrapers (3093). The inner wall space of the scraper (3093) forms a toner transmission channel (3094). Multiple dispersing strips (3095) are provided in the toner transmission channel (3094).

2. The toner cartridge structure of the laser printer according to claim 1, characterized in that, The top surface of the drum frame (5) is provided with two sets of slots (503), and the bottom of the insert plate (501) is connected to two sets of insert posts (502) that match the slots (503). The bottom surface of the insert plate (501) is inserted into the top surface of the drum frame (5) through the insert posts (502).

3. The toner cartridge structure of the laser printer according to claim 2, characterized in that, The developing roller (301) is connected to a rotating shaft three (302) on its side wall. The rotating shaft three (302) has a square groove (303) on its side wall. The rotating shaft two (406) has a protruding structure on its side wall that matches the square groove (303). The rotating shaft three (302) is inserted into the rotating shaft two (406) through the square groove (303).

4. The toner cartridge structure of the laser printer according to claim 3, characterized in that, The bottom surface of the insert plate (501) is provided with a groove that matches the first convex plate (304), and the bottom surface of the drum frame (5) is provided with multiple slots that correspond to the second convex plate (305).

5. The toner cartridge structure of the laser printer according to claim 4, characterized in that, The outer wall of the scraper (3093) is an arc-shaped curved surface structure, and the position where the toner container (308) contacts the outer wall of the scraper (3093) is set as an arc-shaped curved inner wall structure.

6. The toner cartridge structure of the laser printer according to claim 5, characterized in that, The scraper (3093) has a flat blade-like structure at the scraper head, which is used to remove toner adhering to the inner wall of the toner hopper (308).

7. The toner cartridge structure of the laser printer according to claim 6, characterized in that, Multiple dispersing strips (3095) are arranged in an array, and multiple dispersing columns (3096) are rotatably connected to the sidewalls of the dispersing strips (3095).

8. The toner cartridge structure of the laser printer according to claim 7, characterized in that, The dispersing strip (3095) is an arc-shaped thin sheet structure, and the dispersing column (3096) is a thin strip cylindrical structure.

9. The toner cartridge structure of the laser printer according to claim 8, characterized in that, The circumferential sidewall of the dispersing column (3096) is provided with a plurality of cone blocks (3097), the cone blocks (3097) are conical spiky structures, and three cone blocks (3097) are arranged in a circular array on the circumferential sidewall of the dispersing column (3096).

Images