Toner cartridge mechanism for laser printer

Abstract

The utility model relates to the technical field of laser printers, in particular to a toner cartridge mechanism for a laser printer, which comprises a raw powder bin and a transfer printing bin fixedly arranged at the bottom of the raw powder bin, a magnetic roller and a servo motor used for driving the magnetic roller to rotate are rotatably arranged in the transfer printing bin, a powder outlet groove is arranged between the raw powder bin and the transfer printing bin, and a toner cartridge is arranged in the powder outlet groove. The toner cartridge mechanism for the laser printer further comprises a loosening part arranged in the raw toner bin, a transmission part arranged between the magnetic roller and the loosening part, and the loosening part is used for turning over and loosening the toner up and down and intermittently adjusting the opening size of the toner outlet groove so that the toner can be discharged more smoothly. According to the utility model, the transmission part is linked with the magnetic roller and the loosening part, so that the plurality of parallel auger shafts are driven to synchronously rotate and vertically turn over the powdered ink in the raw powder bin, the powdered ink can be prevented from being compacted and caked, the powdered ink is always kept in a fluffy state, the powdered ink can be smoothly discharged, and the powdered ink can be relatively and uniformly attached to the surface of the magnetic roller.

Description

Technical Field

[0001] This utility model relates to the field of laser printer technology, and in particular to a toner cartridge mechanism for laser printers. Background Technology

[0002] The imaging components of a laser printer are concentrated in the toner cartridge, and the print quality is largely determined by the toner cartridge. The toner cartridge not only determines print quality but also the overall production cost of the printer. Uneven toner distribution on the drum core surface leads to inconsistent print depth and, due to the lack of control, results in rapid toner consumption.

[0003] To address the aforementioned technical problems, patent application number 202020961638.2 discloses a toner control device for laser printer drums. This device, through the rotation of a vibrating wheel, uses teeth on the vibrating wheel to continuously drive a lever to vibrate up and down. This vibration-driven transmission process effectively distributes toner to the surface of the drum core, thus controlling toner output. In the aforementioned prior art, during the toner agitation process, the toner between the vibrating plate and the cartridge plate tends to clump together, making it difficult to distribute onto the drum core. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a drum mechanism for laser printers to solve the problem that toner between the oscillating plate and the ink cartridge plate is easily compacted and clumps together by the oscillating plate, making it difficult to feed onto the drum core.

[0005] To achieve the above objectives, this utility model provides a toner cartridge mechanism for a laser printer, including a toner cartridge and a transfer cartridge fixedly disposed at the bottom of the toner cartridge. A magnetic roller is rotatably disposed within the transfer cartridge, and a servo motor is used to drive the rotation of the magnetic roller. A toner outlet groove is provided between the toner cartridge and the transfer cartridge. The toner cartridge mechanism for a laser printer further includes:

[0006] The loosening section located within the original toner hopper is used to tumble and loosen the toner, and to intermittently adjust the opening size of the toner outlet trough to make the toner flow more smoothly.

[0007] A transmission part is provided between the magnetic roller and the loosening part, and the transmission part is used to drive the magnetic roller and the loosening part together.

[0008] Preferably, the loose portion includes:

[0009] A horizontal support plate is fixedly installed inside the raw powder silo.

[0010] A auger shaft is located in parallel between the support plate and the top of the original powder hopper.

[0011] A lever is fixedly installed at the bottom end of one of the auger shafts.

[0012] Several perforations are arranged side by side on the raw powder hopper, and guide rods are inserted into the perforations.

[0013] A sliding strip is slidably disposed between the bottom of the auger shaft and the bottom of the original powder hopper, and one end of the guide rod is fixedly disposed on the sliding strip.

[0014] A spring is provided between the inner wall of the raw powder hopper and the outside of the sliding bar, and the spring is slidably sleeved on the outside of the guide rod.

[0015] Preferably, the vertical cross-sectional shape of the sliding bar is L-shaped, and the vertical surface of the sliding bar is fixedly connected to one end of the guide rod.

[0016] Preferably, the spiral blades on the auger shaft are located between its bottom end and the bottom of the support cross plate, and the top end of the auger shaft passes through the top of the original powder hopper and extends to the outside of the original powder hopper.

[0017] Preferably, the lever is horizontally located at the top of the sliding bar, and the length of the lever is greater than the distance between the initial position of the vertical surface of the sliding bar and the auger shaft.

[0018] Preferably, the transmission unit includes:

[0019] A toothed ring is fixedly sleeved on one end of the magnetic roller.

[0020] The double-headed tooth located on the end face of the transfer chamber is rotated, and one of the tooth surfaces of the double-headed tooth meshes with the tooth surface of the tooth ring.

[0021] Rotate the transmission gear located at the top of the raw powder hopper.

[0022] A double-ended rack is provided between the transmission gear and the double-ended gear, and the double-ended rack is used to link the double-ended gear and the transmission gear.

[0023] A linkage gear is fixedly installed at the top of the auger shaft. The tooth surfaces of two adjacent linkage gears mesh with each other, and the tooth surface of one of the linkage gears also meshes with the tooth surface of the transmission gear.

[0024] Preferably, one end of the double-ended tooth and the double-ended rack are both flat gears, and the other end of the double-ended tooth and the double-ended rack are both bevel gears.

[0025] Preferably, the toner cartridge mechanism for the laser printer further includes a transfer roller rotatably disposed inside the transfer chamber. The top of the transfer chamber is provided with a photosensitive drum and a transfer groove. The bottom of the photosensitive drum is located inside the transfer groove. A waste toner compartment is connected to one side of the transfer chamber. A charging roller is rotatably disposed between the waste toner compartment and the original toner compartment. The top and bottom of the photosensitive drum abut against the bottom of the charging roller and the top of the transfer roller, respectively. The opposing surfaces of the photosensitive drum and the magnetic roller abut against each other. The toner outlet is close to the top of the arc-shaped surface of the magnetic roller.

[0026] The beneficial effects of this utility model are:

[0027] This invention uses a transmission unit to link a magnetic roller and a loosening unit, which drives several parallel auger shafts to rotate synchronously and tumble the toner inside the toner hopper. This prevents the toner from being compacted or clumped, keeping it in a loose state for smooth feeding and relatively even adhesion to the magnetic roller surface. Furthermore, each of the spaced auger shafts has a fixed lever at its bottom end. The lever rotates synchronously with the auger shaft, intermittently pushing a sliding bar to move back and forth a short distance, promoting more even feeding of toner at the toner outlet boundary. This further improves the smoothness and uniformity of toner feeding and prevents toner from accumulating and clumping at the outlet, thus affecting feeding efficiency and uniformity. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a three-dimensional illustration of the present invention. Figure 1 ;

[0030] Figure 2 This is a three-dimensional illustration of the present invention. Figure 2 ;

[0031] Figure 3 This is a three-dimensional illustration of the present invention. Figure 3 ;

[0032] Figure 4 This is a three-dimensional illustration of the present invention. Figure 4 .

[0033] The diagram is marked as follows:

[0034] 1. Raw powder hopper; 2. Transfer hopper; 3. Waste powder hopper; 4. Loosening section; 41. Sliding strip; 42. Screw shaft; 43. Guide rod; 44. Spring; 45. Toggle lever; 46. Support plate; 47. Perforation; 5. Magnetic roller; 6. Transmission section; 61. Gear ring; 62. Double-headed gear; 63. Double-headed gear; 64. Transmission gear; 65. Linkage gear; 7. Photosensitive drum; 8. Transfer roller; 9. Charging roller; 10. Powder outlet trough. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0036] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0037] like Figures 1 to 3 As shown, a toner cartridge mechanism for a laser printer includes a toner cartridge 1 and a transfer cartridge 2 fixedly disposed at the bottom of the toner cartridge 1. A magnetic roller 5 is rotatably disposed inside the transfer cartridge 2, and a servo motor is used to drive the magnetic roller 5 to rotate. A toner outlet trough 10 is provided between the toner cartridge 1 and the transfer cartridge 2, which enables the toner inside the toner cartridge 1 to be dispensed onto the magnetic roller 5. The toner cartridge mechanism for a laser printer also includes:

[0038] The loosening part 4 is located inside the original toner hopper 1. The loosening part 4 is used to tumble and loosen the toner, and intermittently adjusts the opening size of the toner trough 10 to make the toner flow more smoothly.

[0039] A transmission part 6 is provided between the magnetic roller 5 and the loosening part 4. The transmission part 6 is used to drive the magnetic roller 5 and the loosening part 4 together.

[0040] like Figures 2 to 4 As shown, the loose portion 4 includes:

[0041] A horizontal support plate 46 is fixedly installed inside the original powder silo 1.

[0042] The auger shaft 42 is located in parallel between the support plate 46 and the top of the original powder silo 1.

[0043] A lever 45 is fixedly installed at the bottom end of one of the auger shafts 42.

[0044] Several perforations 47 are arranged side by side on the original powder hopper 1, and guide rods 43 are inserted into the perforations 47.

[0045] A sliding strip 41 is slidably disposed between the bottom of the auger shaft 42 and the bottom of the original powder hopper 1, and one end of the guide rod 43 is fixedly disposed on the sliding strip 41.

[0046] A spring 44 is located between the inner wall of the original powder hopper 1 and the outside of the sliding bar 41, and the spring 44 is slidably sleeved on the outside of the guide rod 43.

[0047] The vertical cross-section of the sliding bar 41 is L-shaped, and the vertical surface of the sliding bar 41 is fixedly connected to one end of the guide rod 43.

[0048] The spiral blades on the auger shaft 42 are located between its bottom end and the bottom of the support cross plate 46, and the top end of the auger shaft 42 passes through the top of the original powder hopper 1 and extends to the outside of the original powder hopper 1.

[0049] The lever 45 is horizontally positioned at the top of the sliding bar 41, and the length of the lever 45 is greater than the distance between the initial position of the vertical surface of the sliding bar 41 and the auger shaft 42.

[0050] This design allows the auger shaft 42 to simultaneously rotate the lever 45 while tumbling the toner up and down. Each rotation of the lever 45 causes the sliding bar 41 to slide back and forth horizontally a certain distance, thus intermittently adjusting the opening width of the toner trough 10. This not only makes the toner feeding smoother but also effectively prevents toner from clumping at the boundary of the toner trough 10, which would affect the feeding efficiency and uniformity.

[0051] like Figures 2 to 4 As shown, the transmission unit 6 includes:

[0052] A toothed ring 61 is fixedly sleeved on one end of the magnetic roller 5.

[0053] Rotate the double-headed tooth 62 located on the end face of the transfer chamber 2, and one of the tooth surfaces of the double-headed tooth 62 meshes with the tooth surface of the toothed ring 61.

[0054] Rotate the transmission gear 64 located at the top of the original powder silo 1.

[0055] A double-ended rack 63 is provided between the transmission gear 64 and the double-ended gear 62. The double-ended rack 63 is used to link the double-ended gear 62 and the transmission gear 64.

[0056] A linkage gear 65 is fixedly installed on the top of the auger shaft 42. The tooth surfaces of two adjacent linkage gears 65 mesh with each other, and the tooth surface of one of the linkage gears 65 also meshes with the tooth surface of the transmission gear 64.

[0057] One end of the double-ended tooth 62 and the double-ended rack 63 is a flat gear, and the other end of the double-ended tooth 62 and the double-ended rack 63 is a bevel gear.

[0058] This design enables efficient power transmission, allowing the magnetic roller 5 to simultaneously drive several auger shafts 42 to rotate, thereby achieving real-time up-and-down tumbling of the toner in the toner hopper 1. This prevents the toner from clumping together and keeps it in a fluffy state, ensuring good flowability so that it can smoothly and evenly pass through the toner outlet 10 onto the magnetic roller 5, avoiding uneven toner distribution on the magnetic roller 5.

[0059] like Figures 1 to 3 As shown, the toner cartridge mechanism for a laser printer also includes a transfer roller 8 that rotates inside the transfer chamber 2. A photosensitive drum 7 is located at the top of the transfer chamber 2, and a transfer groove is located at the top of the transfer chamber 2. The bottom of the photosensitive drum 7 is located inside the transfer groove. A waste toner cartridge 3 is connected to one side of the transfer chamber 2. A charging roller 9 is rotatably connected between the waste toner cartridge 3 and the original toner cartridge 1. The top and bottom of the photosensitive drum 7 abut against the bottom of the charging roller 9 and the top of the transfer roller 8, respectively. The opposite surfaces of the photosensitive drum 7 and the magnetic roller 5 abut against each other. The toner outlet 10 is close to the top of the arc-shaped surface of the magnetic roller 5. This design allows the toner to fall evenly on the surface of the magnetic roller 5. Through the cooperation between the photosensitive drum 7, the charging roller 9, and the transfer roller 8, the toner can print the required text, patterns, and other information on the paper.

[0060] Working principle: When the servo motor drives the magnetic roller 5 to rotate, the power transmission through the transmission unit 6 enables the linkage between the magnetic roller 5 and the loosening unit 4. Simultaneously, it can also synchronize the rotation of several auger shafts 42, causing the auger shafts 42 to tumble the toner inside the toner container 1. This keeps the toner in a fluffy state during printing. Furthermore, after a long period of downtime, upon restarting, it loosens the relatively compacted toner in the toner container 1 caused by prolonged gravity, restoring its fluffy state and allowing for smooth toner flow. The material is fed relatively evenly onto the surface of the magnetic roller 5, preventing toner from clumping and getting stuck inside the toner outlet 10, which would affect the uniformity and efficiency of toner feeding. At the same time, during the rotation of the auger shaft 42, one of the auger shafts will drive the lever 45 at its bottom to rotate synchronously. This allows the lever 45 to push the sliding strip 41 to slide laterally back and forth a fixed distance for each rotation, thereby causing the opening size of the toner outlet 10 to change intermittently. This can further improve the smoothness of toner feeding and prevent toner from clumping in the toner outlet 10.

[0061] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0062] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A toner cartridge mechanism for a laser printer, comprising a toner cartridge (1) and a transfer cartridge (2) fixedly disposed at the bottom of the toner cartridge (1), characterized in that, The transfer chamber (2) is equipped with a rotating magnetic roller (5), a servo motor for driving the magnetic roller (5) to rotate, and a toner outlet trough (10) is provided between the original toner chamber (1) and the transfer chamber (2). The toner cartridge mechanism for the laser printer also includes: The loosening part (4) is provided in the original toner hopper (1). The loosening part (4) is used to turn up and down and loosen the toner, and to intermittently adjust the opening size of the toner outlet trough (10) so that the toner can be fed more smoothly. A transmission part (6) is provided between the magnetic roller (5) and the loosening part (4), and the transmission part (6) is used to link the magnetic roller (5) and the loosening part (4).

2. The toner cartridge mechanism for a laser printer according to claim 1, characterized in that, The loose portion (4) includes: A horizontal support plate (46) is fixedly installed in the original powder silo (1); A screw shaft (42) is located in parallel between the top of the support plate (46) and the original powder silo (1); A lever (45) is fixedly installed at the bottom end of one of the auger shafts (42); A plurality of perforations (47) are arranged in parallel on the raw powder hopper (1), and a guide rod (43) is inserted into the perforations (47); A sliding strip (41) is slidably disposed between the bottom of the auger shaft (42) and the bottom of the original powder hopper (1), and one end of the guide rod (43) is fixedly disposed on the sliding strip (41); A spring (44) is provided between the inner wall of the raw powder hopper (1) and the outside of the sliding bar (41), and the spring (44) is slidably sleeved on the outside of the guide rod (43).

3. The toner cartridge mechanism for a laser printer according to claim 2, characterized in that, The vertical cross-section of the sliding bar (41) is L-shaped, and the vertical surface of the sliding bar (41) is fixedly connected to one end of the guide rod (43).

4. The toner cartridge mechanism for a laser printer according to claim 3, characterized in that, The spiral blades on the auger shaft (42) are located between its bottom end and the bottom of the support cross plate (46), and the top end of the auger shaft (42) passes through the top of the interior of the raw powder hopper (1) and extends to the outside of the raw powder hopper (1).

5. The toner cartridge mechanism for a laser printer according to claim 4, characterized in that, The lever (45) is horizontally located at the top of the sliding bar (41), and the length of the lever (45) is greater than the distance between the initial position of the vertical surface of the sliding bar (41) and the auger shaft (42).

6. The toner cartridge mechanism for a laser printer according to claim 5, characterized in that, The transmission unit (6) includes: A toothed ring (61) is fixedly sleeved on one end of the magnetic roller (5); Rotate the double-headed tooth (62) located on the end face of the transfer chamber (2), and one of the tooth surfaces of the double-headed tooth (62) meshes with the tooth surface of the tooth ring (61); Rotate the transmission gear (64) located on top of the raw powder silo (1); A double-headed rack (63) is provided between the transmission gear (64) and the double-headed gear (62), and the double-headed rack (63) is used to link the double-headed gear (62) and the transmission gear (64); A linkage gear (65) is fixedly installed on the top of the auger shaft (42). The tooth surfaces of two adjacent linkage gears (65) mesh with each other, and the tooth surface of one of the linkage gears (65) also meshes with the tooth surface of the transmission gear (64).

7. The toner cartridge mechanism for a laser printer according to claim 6, characterized in that, One end of the double-ended tooth (62) and the double-ended rack (63) is a flat gear, and the other end of the double-ended tooth (62) and the double-ended rack (63) is a bevel gear.

8. The toner cartridge mechanism for a laser printer according to claim 7, characterized in that, The toner cartridge mechanism for the laser printer also includes a transfer roller (8) rotatably disposed inside the transfer chamber (2). A photosensitive drum (7) is provided at the top of the transfer chamber (2), and a transfer groove is provided at the top of the transfer chamber (2). The bottom of the photosensitive drum (7) is located inside the transfer groove. A waste toner chamber (3) is connected to one side of the transfer chamber (2). A charging roller (9) is rotatably disposed between the waste toner chamber (3) and the original toner chamber (1). The top and bottom of the photosensitive drum (7) abut against the bottom of the charging roller (9) and the top of the transfer roller (8), respectively. The opposing surfaces of the photosensitive drum (7) and the magnetic roller (5) abut against each other. The toner outlet (10) is close to the top of the arc-shaped surface of the magnetic roller (5).

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