A toner cartridge without a blade structure

Abstract

The present invention relates to the technical field of printing devices, and specifically relates to a toner cartridge without a cleaning blade structure, which includes a lower housing and an upper housing. A printing component for photosensitization during printing is provided on the inner walls of the lower housing and the upper housing; a recycling component for collecting toner is provided on the inner wall of the upper housing; the printing component includes a drum core for imaging, a charging roller for charging the drum core, a developing roller for adsorbing toner, and a powder feeding roller for conveying toner; by canceling the cleaning blade, the present invention utilizes the electrostatic characteristics of the toner and the electric field force between consumable parts to recover the residual toner on the surface of the drum core into the powder bin, simplifies the structure of the toner cartridge, reduces the material cost, improves the production efficiency, and canceling the cleaning blade also avoids the shearing force and friction force of the cleaning blade on the residual toner on the surface of the drum core, preventing the separated residual toner from entering the waste powder bin and causing an increase in the torque of the toner cartridge, a decrease in the torque during the use of the toner cartridge, an increase in the service life, and a reduction in the leakage ratio of the toner, further improving the quality stability of the toner cartridge.

Description

Technical Field

[0001] The present invention relates to the technical field of printing devices, and particularly to a toner cartridge without a blade structure. Background Art

[0002] A toner cartridge, also known as a photosensitive drum, generally consists of a basic substrate made of aluminum and a photosensitive material coated on the substrate. According to the different photosensitive materials, it can be basically divided into three types: OPC drum, selenium drum, and ceramic drum. A cleaning system is provided in the toner cartridge to clean the drum core in the toner cartridge.

[0003] Most of the existing traditional cleaning systems of toner cartridges are of the blade structure. The residual toner on the surface of the drum core is cleaned by a blade. Using a blade for cleaning will reduce the service life of the toner cartridge. After a long use time, the elasticity of the rubber strip of the blade decays too much, and the cleaning ability decreases, which will affect the cleaning of the residual toner on the surface of the drum core. Summary of the Invention

[0004] The purpose of the present invention is to provide a toner cartridge without a blade structure, which includes a lower housing and an upper housing. A printing component for photosensitization during printing is provided on the inner walls of the lower housing and the upper housing; a recycling component for collecting toner is provided on the inner wall of the upper housing; the printing component includes a drum core for imaging, a charging roller for charging the drum core, a developing roller for adsorbing toner, a powder feeding roller for conveying toner, a powder bin for storing toner, a cleaning sponge for cleaning the toner on the surface of the charging roller, and a mounting bracket for mounting the cleaning sponge. The drum core is rotatably installed on one side of the bottom end of the inner wall of the lower housing, the charging roller is rotatably installed on one side of the top end of the inner wall of the lower housing, and the charging roller is located on the outer wall of the drum core. The developing roller and the powder feeding roller are rotatably installed on one side of the bottom end of the inner wall of the lower housing, and the developing roller is located on the outer wall of the drum core. The powder feeding roller is located on the outer wall of the developing roller. The powder bin is provided on one side of the inner wall of the lower housing. The mounting bracket is fixedly installed on the inner wall of the upper housing. The cleaning sponge is rotatably installed on the inner wall of the mounting bracket.

[0005] Optionally, the charging roller is in contact with the drum core, a gap is formed between the developing roller and the drum core, and the cleaning sponge is in contact with the charging roller.

[0006] Optionally, the powder feeding roller is located inside the powder bin. A dust outlet is provided on one side of the powder bin. A blocking plate is fixedly installed at the top end of the inner wall of the dust outlet, and the bottom end of the blocking plate is located on the outer wall of the developing roller.

[0007] Optionally, the recycling component includes a cleaning cylinder, a powder suction frame, a fan, a powder suction channel, a connecting pipe, an installation cylinder and a collecting piece. The cleaning cylinder is rotatably installed on the inner wall of the installation frame. One side of the installation frame is fixedly installed with a cleaning motor, and the output end of the cleaning motor extends to the inner wall of the installation frame. The cleaning cylinder is installed at one end of the cleaning motor. A number of notches are formed on the outer wall of the cleaning cylinder, and the powder suction frame is fixedly installed on the notch wall. The fan is fixedly installed on the top of the powder suction frame, and the fan is communicated with the powder suction frame. The powder suction channel is fixedly installed at the bottom end of the powder suction frame. The installation cylinder is fixedly installed on the inner wall of the cleaning cylinder, and the collecting piece is fixedly installed on the outer wall of the cleaning cylinder. A number of the connecting pipes are fixedly installed on one side of the collecting piece.

[0008] Optionally, a number of installation grooves are formed on the outer wall of the cleaning cylinder, and installation plates are fixedly installed on both sides of the installation groove wall. The cleaning sponge is fixedly installed at one end of the installation plate.

[0009] Optionally, the collecting piece is arc-shaped, an arc-shaped groove is formed on one side of the collecting piece, and the arc-shaped groove is communicated with the connecting pipe. The other end of the connecting pipe extends to the inner wall of the installation cylinder, and an exhaust fan is installed at one end of the connecting pipe located on the inner wall of the installation cylinder.

[0010] Optionally, the cleaning sponge is arc-shaped, a number of collecting grooves are formed at one end of the cleaning sponge, the collecting grooves are triangular, the position of the collecting piece corresponds to that of the collecting grooves, and the powder suction frame is located on both sides of the installation groove.

[0011] Optionally, the bottom end of the powder suction channel extends to the inner wall of the installation cylinder. A number of fixing rods are fixedly installed on the inner wall of the cleaning cylinder. The installation cylinder is fixedly installed on the inner wall of the cleaning cylinder through the fixing rods. A driving motor is fixedly installed at one end of the installation cylinder, and the output end of the driving motor extends to the inner wall of the installation cylinder. A fan blade is fixedly installed at one end of the output end of the driving motor. The fan blade is located on the inner wall of the installation cylinder. A powder delivery channel is rotatably installed at one end of the installation cylinder. The powder delivery channel is fixedly installed on one side of the installation frame, and the other end of the powder delivery channel is fixedly installed on the outer wall of the powder bin, and the other end of the powder delivery channel is communicated with the powder bin.

[0012] Optionally, an installation frame is fixedly installed on the inner wall of the cleaning cylinder. The position of the installation frame corresponds to that of the installation groove. An oscillating motor is fixedly installed at the top end of the inner wall of the installation frame. A transfer plate is fixedly installed at the bottom end of the oscillating motor. One side of the transfer plate is located on the inner wall surface of the cleaning sponge. A buffer spring is fixedly installed between the transfer plate and the bottom end of the inner wall of the installation frame.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The present invention simplifies the structure of the toner cartridge, reduces the material cost, and improves the production efficiency by canceling the cleaning blade and using the electrostatic characteristics of the toner and the electric field force between the consumables to recover the residual toner on the surface of the drum core into the powder bin. At the same time, canceling the cleaning blade avoids the shear force and friction force of the cleaning blade on the residual toner on the surface of the drum core, prevents the separated residual toner from entering the waste powder bin and causing an increase in the torque of the powder cartridge, reduces the torque drop during the use of the toner cartridge, increases the service life, and reduces the powder leakage ratio, further improving the quality stability of the toner cartridge.

[0015] 2. When the toner enters the inside of the installation cylinder, the driving motor starts to drive the fan blade to rotate, blowing the toner collected in the installation cylinder into the powder feeding channel and sending it back to the powder bin through the powder feeding channel, which can better recover the toner adsorbed on the cleaning sponge and reduce the waste of toner.

[0016] 3. The present invention starts the oscillating motor to drive the transfer plate to vibrate. The transfer plate is located on one side of the inner wall of the cleaning sponge to vibrate the cleaning sponge, assisting the toner adsorbed on the cleaning sponge to fall off, so that the toner adsorbed on the cleaning sponge can be better collected by the powder suction frame and the collecting member. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the upper shell and the lower shell of the present invention;

[0019] Figure 3 It is a schematic structural diagram of the recovery component of the present invention;

[0020] Figure 4 It is an installation diagram of the installation frame of the present invention;

[0021] Figure 5 It is a diagram of the installation groove on the cleaning cylinder of the present invention;

[0022] Figure 6 It is a schematic structural diagram of the collecting member of the present invention;

[0023] Figure 7 It is a schematic installation diagram of the fan blade of the present invention.

[0024] Explanation of the Reference Numerals in the Drawings:

[0025] 1. Lower housing; 2. Upper housing; 3. Cleaning sponge; 4. Mounting bracket; 5. Charging roller; 6. Drum core; 7. Developing roller; 8. Powder feeding roller; 9. Powder bin; 10. Baffle plate; 11. Powder feeding channel; 12. Collection trough; 13. Mounting frame; 14. Mounting cylinder; 15. Driving motor; 16. Cleaning cylinder; 17. Collection piece; 18. Connecting pipe; 19. Powder suction frame; 20. Fan; 21. Oscillating motor; 22. Transfer plate; 23. Buffer spring; 24. Mounting plate; 25. Powder suction channel; 26. Fan blade.

[0026] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Please refer to Figure 1 and Figure 2 , the present invention provides a toner cartridge without a scraper structure, including a lower housing 1 and an upper housing 2. The inner walls of the lower housing 1 and the upper housing 2 are provided with a printing component for photosensitivity during printing, and the inner wall of the upper housing 2 is provided with a recycling component for collecting toner; the printing component includes a drum core 6 for image development, a charging roller 5 for charging the drum core 6, a developing roller 7 for adsorbing toner, a powder feeding roller 8 for conveying toner, a powder bin 9 for storing toner, a cleaning sponge 3 for cleaning the toner adhered to the surface of the charging roller 5, and a mounting bracket 4 for mounting the cleaning sponge 3. The drum core 6 is rotatably installed on one side of the bottom end of the inner wall of the lower housing 1, the charging roller 5 is rotatably installed on one side of the top end of the inner wall of the lower housing 1, and the charging roller 5 is located on the outer wall of the drum core 6. The developing roller 7 and the powder feeding roller 8 are rotatably installed on one side of the bottom end of the inner wall of the lower housing 1, and the developing roller 7 is located on the outer wall of the drum core 6. The powder feeding roller 8 is located on the outer wall of the developing roller 7. The powder bin 9 is arranged on one side of the inner wall of the lower housing 1. The mounting bracket 4 is fixedly installed on the inner wall of the upper housing 2. The cleaning sponge 3 is rotatably installed on the inner wall of the mounting bracket 4. The charging roller 5 is in contact with the drum core 6. A gap is formed between the developing roller 7 and the drum core 6. The cleaning sponge 3 is in contact with the charging roller 5. The powder feeding roller 8 is located inside the powder bin 9. A dust outlet is opened on one side of the powder bin 9. The top end of the inner wall of the dust outlet is fixedly installed with a baffle plate 10. The bottom end of the baffle plate 10 is located on the outer wall of the developing roller 7; the charging roller 5 functions to charge the drum core 6, the developing roller 7 functions to adsorb toner, and the developed toner particles are adsorbed on the exposed surface of the drum core 6 under the action of an electric field. The cleaning sponge 3 functions to clean the toner adhered to the surface of the charging roller 5, and the powder feeding roller 8 functions to convey the toner inside the powder bin 9.

[0029] Refer to Figure 3 、 Figure 5 、 Figure 6 、 Figure 7 The recycling component includes a cleaning cylinder 16, a powder suction frame 19, a fan 20, a powder suction channel 25, a connecting pipe 18, a mounting cylinder 14 and a collecting member 17. The cleaning cylinder 16 is rotatably mounted on the inner wall of the mounting frame 4. A cleaning motor is fixedly mounted on one side of the mounting frame 4. The output end of the cleaning motor extends to the inner wall of the mounting frame 4. The cleaning cylinder 16 is mounted at one end of the cleaning motor. A plurality of notches are formed in the outer wall of the cleaning cylinder 16. The powder suction frame 19 is fixedly mounted on the notch wall. The fan 20 is fixedly mounted on the top end of the powder suction frame 19. The fan 20 is communicated with the powder suction frame 19. The powder suction channel 25 is fixedly mounted on the bottom end of the powder suction frame 19. The mounting cylinder 14 is fixedly mounted on the inner wall of the cleaning cylinder 16. The collecting member 17 is fixedly mounted on the outer wall of the cleaning cylinder 16. A plurality of connecting pipes 18 are fixedly mounted on one side of the collecting member 17. A plurality of mounting grooves are formed in the outer wall of the cleaning cylinder 16. Mounting plates 24 are fixedly mounted on both sides of the mounting groove wall. The cleaning sponge 3 is fixedly mounted at one end of the mounting plate 24. The collecting member 17 is arc-shaped. An arc-shaped groove is formed on one side of the collecting member 17. And the arc-shaped groove is communicated with the connecting pipe 18. The other end of the connecting pipe 18 extends to the inner wall of the mounting cylinder 14. A suction fan is mounted at the end of the connecting pipe 18 located on the inner wall of the mounting cylinder 14. The cleaning sponge 3 is arc-shaped. A plurality of collecting grooves 12 are formed at one end of the cleaning sponge 3. The collecting grooves 12 are triangular. The position of the collecting member 17 corresponds to that of the collecting grooves 12. The powder suction frame 19 is located on both sides of the mounting groove; The cleaning motor on one side of the mounting frame 4 functions to drive the cleaning cylinder 16 to rotate. The cleaning sponge 3 provided on the outer wall surface of the cleaning cylinder 16 cleans the toner adhered to the outer wall surface of the charging roller 5. When the cleaning sponge 3 cleans the toner, the toner enters the collecting grooves 12. The toner accumulates in the collecting grooves 12. At the same time, the suction fan is started, and the toner in the collecting grooves 12 is collected through the collecting member 17. The toner is sucked into the interior of the mounting cylinder 14 through the connecting pipe 18. At the same time, the fan 20 is started, and the toner around the cleaning sponge 3 is adsorbed through the powder suction frame 19. The toner enters the interior of the mounting cylinder 14. The drive motor 15 is started to drive the fan blade 26 to rotate, and the toner collected in the mounting cylinder 14 is blown into the powder feeding channel 11 and sent back to the powder bin 9 through the powder feeding channel 11, so that the toner adsorbed on the cleaning sponge 3 can be recycled.

[0030] Refer to Figure 4, the bottom end of the powder suction channel 25 extends to the inner wall of the installation cylinder 14. A number of fixed rods are fixedly installed on the inner wall of the cleaning cylinder 16. The installation cylinder 14 is fixedly installed on the inner wall of the cleaning cylinder 16 through the fixed rods. One end of the installation cylinder 14 is fixedly installed with a driving motor 15. The output end of the driving motor 15 extends to the inner wall of the installation cylinder 14. One end of the output end of the driving motor 15 is fixedly installed with a fan blade 26. The fan blade 26 is located on the inner wall of the installation cylinder 14. One end of the installation cylinder 14 is rotatably installed with a powder feeding channel 11. The powder feeding channel 11 is fixedly installed on one side of the installation frame 4. The other end of the powder feeding channel 11 is fixedly installed on the outer wall of the powder bin 9, and the other end of the powder feeding channel 11 is communicated with the powder bin 9. An installation frame 13 is fixedly installed on the inner wall of the cleaning cylinder 16. The position of the installation frame 13 corresponds to the position of the installation groove. The top end of the inner wall of the installation frame 13 is fixedly installed with a vibration motor 21. The bottom end of the vibration motor 21 is fixedly installed with a transfer plate 22. One side of the transfer plate 22 is located on the surface of the inner wall of the cleaning sponge 3. A buffer spring 23 is fixedly installed between the transfer plate 22 and the bottom end of the inner wall of the installation frame 13; when the vibration motor 21 is started, it drives the transfer plate 22 to vibrate. The transfer plate 22 is located on one side of the inner wall of the cleaning sponge 3 to vibrate the cleaning sponge 3, assisting the toner adsorbed on the cleaning sponge 3 to fall off, so that the toner adsorbed on the cleaning sponge 3 can be better collected by the powder suction frame 19 and the collecting member 17.

[0031] The working process and principle of the present invention: After printing and developing, there will be a small amount of residual toner on the charging roller 5 and the drum core 6. Since the voltage of the charging roller 5 is much higher than that of the drum core 6 before printing, a part of the toner remaining on the charging roller 5 returns to the drum core 6 due to the action of the electric field force. When the drum core 6 rotates closest to the developing roller 7, since the drum core 6 was charged by the charging roller 5 before and the drum core 6 was not exposed, the entire electric potential is higher than that of the developing roller 7. At this time, the residual toner on the surface of the drum core 6 is adsorbed from the drum core 6 back to the developing roller 7. The powder feeding roller 8 in the powder bin 9 then sweeps the waste toner adsorbed on the developing roller 7 back into the powder bin 9, mixes it with the new toner in the powder bin 9 again, and participates in developing again.

[0032] The above content is a further detailed description of the present invention in combination with specific implementation manners. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, which should all be regarded as belonging to the protection scope determined by the claims submitted for the present invention.

Claims

1. A scraperless toner cartridge, comprising a lower housing (1) and an upper housing (2), characterized in that: A printing assembly for photosensitive printing is provided on the inner walls of the lower housing (1) and the upper housing (2); a recycling assembly for collecting toner is provided on the inner wall of the upper housing (2); The printing assembly includes a drum core (6) for image development, a charging roller (5) for charging the drum core (6), a developing roller (7) for adsorbing toner, a powder feeding roller (8) for conveying toner, a powder bin (9) for storing toner, a cleaning sponge (3) for cleaning the toner on the surface of the charging roller (5), and a mounting bracket (4) for mounting the cleaning sponge (3). The drum core (6) is rotatably mounted on one side of the bottom end of the inner wall of the lower housing (1), the charging roller (5) is rotatably mounted on one side of the top end of the inner wall of the lower housing (1), and the charging roller (5) is located on the outer wall of the drum core (6). The developing roller (7) and the powder feeding roller (8) are rotatably mounted on one side of the bottom end of the inner wall of the lower housing (1), and the developing roller (7) is located on the outer wall of the drum core (6). The powder feeding roller (8) is located on the outer wall of the developing roller (7). The powder bin (9) is provided on one side of the inner wall of the lower housing (1). The mounting bracket (4) is fixedly mounted on the inner wall of the upper housing (2), and the cleaning sponge (3) is rotatably mounted on the inner wall of the mounting bracket (4); The recycling assembly includes a cleaning cylinder (16), a powder suction frame (19), a blower (20), a powder suction channel (25), a connecting pipe (18), a mounting cylinder (14), and a collecting member (17). The cleaning cylinder (16) is rotatably mounted on the inner wall of the mounting bracket (4). A cleaning motor is fixedly mounted on one side of the mounting bracket (4), and an output end of the cleaning motor extends into the inner wall of the mounting bracket (4). The cleaning cylinder (16) is mounted on one end of the cleaning motor. A plurality of notches are formed in the outer wall of the cleaning cylinder (16), and the powder suction frame (19) is fixedly mounted on the notch wall. The blower (20) is fixedly mounted on the top end of the powder suction frame (19), and the blower (20) is communicated with the powder suction frame (19). The powder suction channel (25) is fixedly mounted on the bottom end of the powder suction frame (19). The mounting cylinder (14) is fixedly mounted on the inner wall of the cleaning cylinder (16), the collecting member (17) is fixedly mounted on the outer wall of the cleaning cylinder (16), and a plurality of the connecting pipes (18) are fixedly mounted on one side of the collecting member (17); The bottom end of the powder suction channel (25) extends to the inner wall of the installation cylinder (14). A number of fixing rods are fixedly installed on the inner wall of the cleaning cylinder (16). The installation cylinder (14) is fixedly installed on the inner wall of the cleaning cylinder (16) through the fixing rods. One end of the installation cylinder (14) is fixedly installed with a driving motor (15). The output end of the driving motor (15) extends to the inner wall of the installation cylinder (14). One end of the output end of the driving motor (15) is fixedly installed with a fan blade (26). The fan blade (26) is located on the inner wall of the installation cylinder (14). One end of the installation cylinder (14) is rotatably installed with a powder delivery channel (11). The powder delivery channel (11) is fixedly installed on one side of the installation frame (4). The other end of the powder delivery channel (11) is fixedly installed on the outer wall of the powder bin (9), and the other end of the powder delivery channel (11) is communicated with the powder bin (9).

2. The scraperless drum unit according to claim 1, wherein: The charging roller (5) is in contact with the drum core (6). A gap is formed between the developing roller (7) and the drum core (6). The cleaning sponge (3) is in contact with the charging roller (5).

3. The scraperless-structured toner cartridge according to claim 1, wherein: The powder delivery roller (8) is located inside the powder bin (9). A dust outlet is provided on one side of the powder bin (9). A blocking plate (10) is fixedly installed at the top end of the inner wall of the dust outlet. The bottom end of the blocking plate (10) is located on the outer wall of the developing roller (7).

4. A scraperless-structured toner cartridge according to claim 1, wherein: A number of installation slots are provided on the outer wall of the cleaning cylinder (16). Installation plates (24) are fixedly installed on both sides of the inner wall of the installation slot. The cleaning sponge (3) is fixedly installed at one end of the installation plate (24).

5. A scraperless-structured toner cartridge according to claim 4, characterized in that: The collecting member (17) is arc-shaped. An arc-shaped groove is provided on one side of the collecting member (17), and the arc-shaped groove is communicated with the connecting pipe (18). The other end of the connecting pipe (18) extends to the inner wall of the installation cylinder (14). A suction fan is installed at the end of the connecting pipe (18) located on the inner wall of the installation cylinder (14).

6. The non-scraper-structured toner cartridge according to claim 4, characterized in that: The cleaning sponge (3) is arc-shaped. A number of collecting grooves (12) are provided at one end of the cleaning sponge (3). The collecting grooves (12) are triangular. The position of the collecting member (17) corresponds to that of the collecting grooves (12). The powder suction frame (19) is located on both sides of the installation slot.

7. A scraperless-structured toner cartridge according to claim 4, characterized in that: An installation frame (13) is fixedly installed on the inner wall of the cleaning cylinder (16). The position of the installation frame (13) corresponds to that of the installation slot. An oscillation motor (21) is fixedly installed at the top end of the inner wall of the installation frame (13). A transfer plate (22) is fixedly installed at the bottom end of the oscillation motor (21). One side of the transfer plate (22) is located on the inner surface of the cleaning sponge (3). A buffer spring (23) is fixedly installed between the transfer plate (22) and the bottom end of the inner wall of the installation frame (13).

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