Double-sided paper path structure of portable ink-jet printer

Abstract

The invention provides a double-sided paper path structure of a portable ink-jet printer, which comprises a front paper path and a turn-over paper path, the front paper path is provided with a first-stage reversing assembly, a first-stage paper feeding assembly, a second-stage reversing assembly and a second-stage paper feeding assembly, the turn-over paper path is provided with a turn-over first-stage paper feeding assembly and a turn-over second-stage paper feeding assembly, and the turn-over first-stage paper feeding assembly and the turn-over second-stage paper feeding assembly are arranged on the turn-over paper path. After front printing is completed, the paper is sent back to the second-level paper feeding assembly again, enters the turn-over first-level paper feeding assembly through the second-level reversing assembly and then reaches the turn-over second-level paper feeding assembly through the first-level reversing assembly, and the turn-over action is completed. The portable ink-jet printer has the beneficial effects that double-sided printing of the portable ink-jet printer is realized, the printing efficiency is improved, and the waste of paper is reduced; by arranging the first-stage reversing assembly and the second-stage reversing assembly, paper can be smoothly conveyed according to a set paper path, paper jam is avoided, and smooth double-sided printing is guaranteed; the double-sided paper path is compact in structure and precise in transmission, and the portability is further improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of inkjet printer paper path technology, in particular to a double-sided paper path structure of a portable inkjet printer. BACKGROUND

[0002] With the popularization of the concept of mobile office, more and more business people and freelancers need to print documents, contracts, reports and other materials at any time during business negotiations, meetings, on-site services and other processes, so a portable printer is needed to complete the printing task immediately when needed and improve work efficiency. With the continuous development of printer technology and the increasing awareness of global environmental protection, people's attention to paper waste reduction is also increasing, and the market demand for inkjet printers with double-sided printing function is gradually increasing. The portable inkjet printers on the market are difficult to realize double-sided function due to technical, cost and space constraints, and users can only use manual flipping to achieve double-sided printing in such cases, which not only increases the time cost, but also easily causes printing failure due to incorrect paper placement, further reducing printing efficiency. In addition, due to the inability to print double-sided, the amount of paper used when printing the same document will double, which will increase the office cost of individual users or enterprises from the perspective of paper cost, and users will have to carry more paper when traveling, causing more inconvenience. Therefore, it is urgent to research a double-sided paper path structure of a portable inkjet printer. SUMMARY

[0003] To solve the above technical problems, the present application provides a double-sided paper path structure of a portable inkjet printer, which effectively solves the technical problems of the existing portable inkjet printer that cannot automatically realize double-sided printing, has low printing efficiency, causes paper waste and has poor convenience, and overcomes the shortcomings of the prior art.

[0004] The technical solution adopted by the present application is: a double-sided paper path structure of a portable inkjet printer, comprising: a front paper path and a flipping paper path, a first reversing assembly, a first paper feeding assembly, a second reversing assembly and a second paper feeding assembly are arranged on the front paper path, a flipping first paper feeding assembly and a flipping second paper feeding assembly are arranged on the flipping paper path, after front printing, the paper is fed back to the second paper feeding assembly, passes through the second reversing assembly to enter the flipping first paper feeding assembly, and then passes through the first reversing assembly to reach the flipping second paper feeding assembly to complete the flipping action.

[0005] Further, it further comprises,

[0006] A paper taking assembly is arranged for conveying the paper to the first reversing assembly;

[0007] A paper output assembly is arranged for receiving the paper conveyed by the second paper feeding assembly and outputting the paper.

[0008] Further, the paper taking assembly comprises a paper taking gear and a paper taking roller, and the paper taking gear is provided with an electromagnetic clutch.

[0009] Further, the primary reversing assembly comprises,

[0010] A primary reversing support is provided with a rotating shaft.

[0011] A reversing gear set is arranged at one end of the primary reversing support and connected with the primary reversing support, and used for driving the primary reversing support to rotate.

[0012] Further, the primary paper feeding assembly, the secondary paper feeding assembly, the face-up primary paper feeding assembly and the face-up secondary paper feeding assembly all comprise a paper feeding rubber roller and a paper feeding pressure roller, and the paper feeding rubber roller is connected with a paper feeding gear.

[0013] Further, the secondary reversing assembly is arranged on the paper feeding rubber roller of the primary paper feeding assembly, and the paper feeding rubber roller of the primary paper feeding assembly can drive the secondary reversing assembly to rotate.

[0014] Further, the secondary reversing assembly comprises,

[0015] A secondary reversing support is connected with the paper feeding rubber roller of the primary paper feeding assembly at an end.

[0016] A movable flap is arranged at a side of the secondary reversing support away from the primary paper feeding assembly and rotationally connected with the secondary reversing support.

[0017] Further, an end of the secondary reversing support is provided with a shaft sleeve, and the shaft sleeve is connected with the paper feeding rubber roller of the primary paper feeding assembly.

[0018] Further, the weight of one end of the movable flap close to the primary paper feeding assembly is greater than the weight of the other end.

[0019] Further, the paper discharging assembly comprises a paper discharging rubber roller and a paper discharging pressure roller, and the outer periphery of the paper discharging pressure roller is provided with a metal pin wheel.

[0020] The application has the advantages and positive effects that: due to the above technical scheme, the double-sided printing of the portable inkjet printer is realized, the printing efficiency is improved, and the waste of paper is reduced; by arranging the primary reversing assembly and the secondary reversing assembly, the paper can be smoothly transmitted according to the set paper path, the paper jamming is avoided, and the smooth double-sided printing is ensured; the double-sided paper path structure is compact and the transmission is precise, and the portability is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which like reference characters refer to like parts throughout the figures. The drawings provided are for purposes of illustration only and are not intended to limit the present application thereto.

[0022] Figure 1 is a schematic diagram of the overall structure of a double-sided paper path structure of a portable inkjet printer according to an embodiment of the present application

[0023] Figure 2 is a schematic diagram of a double-sided paper path of a double-sided paper path structure of a portable inkjet printer according to an embodiment of the present application.

[0024] Figure 3 is a schematic diagram of a paper take-up assembly of a double-sided paper path structure of a portable inkjet printer according to an embodiment of the present application.

[0025] Figure 4 is a schematic diagram of a primary reversing assembly of a double-sided paper path structure of a portable inkjet printer according to an embodiment of the present application.

[0026] Figure 5 is a schematic diagram of a primary reversing bracket in a horizontal state of a double-sided paper path structure of a portable inkjet printer according to an embodiment of the present application.

[0027] Figure 6 is a schematic diagram of a primary reversing bracket in a vertical state of a double-sided paper path structure of a portable inkjet printer according to an embodiment of the present application.

[0028] Figure 7 is a schematic diagram of a secondary paper feed assembly of a double-sided paper path structure of a portable inkjet printer according to an embodiment of the present application.

[0029] Figure 8 is a schematic diagram of a secondary reversing assembly of a double-sided paper path structure of a portable inkjet printer according to an embodiment of the present application.

[0030] Figure 9 is a side view of a secondary reversing assembly of a double-sided paper path structure of a portable inkjet printer according to an embodiment of the present application.

[0031] Figure 10 is a schematic diagram of a movable flap of a double-sided paper path structure of a portable inkjet printer according to an embodiment of the present application.

[0032] Figure 11 is a schematic diagram of a shaft sleeve of a double-sided paper path structure of a portable inkjet printer according to an embodiment of the present application.

[0033] Figure 12This is a schematic diagram of the paper output assembly of a double-sided paper path structure of a portable inkjet printer according to an embodiment of the present invention.

[0034] Figure 13 This is a schematic diagram of the forward rotation of the transmission unit motor of a portable inkjet printer's double-sided paper path structure according to an embodiment of the present invention.

[0035] Figure 14 This is a schematic diagram of the reverse rotation of the transmission unit motor of a portable inkjet printer's double-sided paper path structure according to an embodiment of the present invention.

[0036] In the diagram: 10. Paper feeding assembly; 11. Paper feeding gear; 12. Paper feeding shaft; 13. Electromagnetic clutch; 14. Pager roller; 15. Paper feeding roller 15; 20. First-stage reversing assembly; 21. First-stage reversing bracket; 22. Reversing gear set; 23. Rotating shaft; 24. Connecting column; 30. First-stage paper feeding assembly; 31. First-stage paper feeding gear; 40. Second-stage reversing assembly; 41. Second-stage reversing bracket; 42. Movable flip plate; 43. Bushing; 50. Second-stage paper feeding assembly; 51. Second-stage paper feeding gear; 52. Paper feeding rubber roller; 53. Paper feeding pressure roller; 60. First-stage flipping paper feeding assembly; 61. First-stage flipping paper feeding gear; 70. Second-stage flipping paper feeding assembly; 71. Second-stage flipping paper feeding gear; 80. Paper output assembly; 81. Paper output rubber roller; 82. Paper output pressure roller; 83. Paper output gear; 90. Motor. Detailed Implementation

[0037] This invention provides a double-sided paper path structure for a portable inkjet printer. The embodiments of this invention will be described below with reference to the accompanying drawings.

[0038] In the description of the embodiments of this invention, it should be understood that the terms "top," "bottom," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "set" and "connected" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention through specific circumstances.

[0039] like Figure 1 and Figure 2As shown in the figure, an embodiment of the present invention discloses a double-sided paper path structure for a portable inkjet printer, comprising a front paper path and a flip-over paper path, including a paper feed assembly 10, a primary reversing assembly 20, a primary paper feeding assembly 30, a secondary reversing assembly 40, a secondary paper feeding assembly 50, a flip-over primary paper feeding assembly 60, a flip-over secondary paper feeding assembly 70, and a paper output assembly 80. The primary reversing assembly 20, the primary paper feeding assembly 30, the secondary reversing assembly 40, and the secondary paper feeding assembly 50 are disposed on the front paper path, while the flip-over primary paper feeding assembly 60 and the flip-over secondary paper feeding assembly 70 are disposed on the flip-over paper path. In this embodiment, a motor 90 is used for driving. When the motor 90 rotates forward, the paper take-up assembly 10 feeds the paper into the first-stage reversing assembly 20. The paper passes through the first-stage reversing assembly 20 and enters the first-stage paper feeding assembly 30. Driven by the first-stage paper feeding assembly 30, the paper enters the second-stage reversing assembly 40. After passing through the second-stage reversing assembly 40, the paper is transferred by the second-stage paper feeding assembly 50 to the paper output assembly 80 to complete front-side printing. When the paper tail has not completely left the paper output assembly 80, the motor 90 reverses, and the paper is fed back to the second-stage paper feeding assembly 50. After passing through the second-stage reversing assembly 40, the paper enters the first-stage flipping paper feeding assembly 60, and then passes through the first-stage reversing assembly 20 to reach the second-stage flipping paper feeding assembly 70 to complete the flipping action. The paper passes through the second-stage reversing assembly 40 again and enters the second-stage paper feeding assembly 50 to complete the reverse-side printing. Finally, the paper is output by the paper output assembly 80.

[0040] Specifically, such as Figure 3 As shown, the paper feeding assembly 10 includes a paper feeding gear 11 and a paper feeding roller 15. An electromagnetic clutch 13 is mounted on the paper feeding gear 11. The electromagnetic clutch 13 is connected to one end of the paper feeding shaft 12, and a page separating roller 14 and the paper feeding roller 15 are mounted on the other end of the paper feeding shaft 12. When energized, the electromagnetic clutch 13 engages, and the paper feeding gear 11 drives the paper feeding roller 15 via the paper feeding shaft 12 to complete the paper feeding action. When de-energized, the electromagnetic clutch 13 is not engaged, and the paper feeding gear 11 idles without driving the paper feeding roller 15 to rotate. The mounting method of the paper feeding roller 15 and the page separating roller 14 is existing technology; the specific paper feeding and page separating processes are not described in detail here.

[0041] Specifically, such as Figure 4 As shown, the primary reversing assembly 20 includes a primary reversing bracket 21 and a reversing gear set 22. The primary reversing bracket 21 has a rotating shaft 23. The reversing gear set 22 is located at one end of the primary reversing bracket 21 and connected to it, used to drive the primary reversing bracket 21 to rotate. In this embodiment, the primary reversing bracket 21 is in the shape of a large "V," with a circular rotating shaft 23 fixed in the middle. Both ends of the circular rotating shaft 23 are rotatably connected to the machine body. The reversing gear set 22 is located at one end of the primary reversing bracket 21 and is connected to one end of the primary reversing bracket 21 via a connecting post 24. When the reversing gear set 22 rotates, it can drive the primary reversing bracket 21 to rotate. Figure 5As shown, when the motor 90 rotates forward, it drives the reversing gear set 22 to rotate the first-stage reversing bracket 21, so that the first-stage reversing bracket 21 is in a horizontal position, which facilitates the paper being transported from the paper pick-up assembly 10 to the first-stage paper feeding assembly 30. Figure 6 As shown, when the motor 90 reverses, it drives the reversing gear set 22 to rotate the first-stage reversing bracket 21, so that the first-stage reversing bracket 21 is in a vertical position, which makes it easier for the paper to enter the second-stage reversing paper feeding assembly 70 from the first-stage flipping paper feeding assembly 60 through the first-stage reversing assembly 20.

[0042] Specifically, the primary paper feeding assembly 30, secondary paper feeding assembly 50, flipping primary paper feeding assembly 60, and flipping secondary paper feeding assembly 70 all include a paper feeding roller and a paper feeding pressure roller, with a paper feeding gear connected to the paper feeding roller. A motor 90 drives the paper feeding gear to rotate, which in turn drives the paper feeding roller to rotate. The paper feeding roller, through friction, moves the paper along the paper path. A paper feeding pressure roller is installed on the opposite side of the paper and is rotatably connected to the machine body. In the primary paper feeding assembly 30 and the flipping secondary paper feeding assembly 70, the paper feeding roller is located below the paper feeding pressure roller. In the flipping primary paper feeding assembly 60 and the secondary paper feeding assembly 50, the paper feeding roller 52 is located above the paper feeding pressure roller 53, as shown below. Figure 7 As shown. Preferably, the coefficient of friction of the surface texture of the paper feeding roller 52 of the secondary paper feeding assembly 50 is above 2.0. During the process of paper being conveyed from the secondary paper feeding assembly 50 to the output paper assembly 80, the print head performs printing work. Setting a larger coefficient of friction for the paper feeding roller 52 of the secondary paper feeding assembly 50 can prevent paper slippage, ensure stable paper transmission, and improve printing quality.

[0043] Specifically, such as Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, the secondary reversing assembly 40 is mounted on the paper feeding roller of the primary paper feeding assembly 30. The paper feeding roller of the primary paper feeding assembly 30 can drive the secondary reversing assembly 40 to rotate, so that the paper can be transported along the paper path.

[0044] The secondary reversing assembly 40 includes a secondary reversing bracket 41 and a movable flap 42. The end of the secondary reversing bracket 41 is connected to the paper feeding roller of the primary paper feeding assembly 30. The movable flap 42 is located on the side of the secondary reversing bracket 41 away from the primary paper feeding assembly 30 and is rotatably connected to the secondary reversing bracket 41. In this embodiment, a bushing 43 is fixed to each end of the secondary reversing bracket 41. The connecting end of the bushing 43 is interference-fitted with the metal shaft of the paper feeding roller of the primary paper feeding assembly 30, so that the rotation of the paper feeding roller of the primary paper feeding assembly 30 can drive the secondary reversing assembly 40 to rotate. When motor 90 rotates forward, the paper feeding roller of the primary paper feeding assembly 30 rotates counterclockwise, driving the secondary reversing bracket 41 to move downward, providing a paper path gap for the paper to be fed to the secondary paper feeding assembly 50, facilitating the transfer of paper from the primary paper feeding assembly 30 to the secondary paper feeding assembly 50 for front-side printing; when motor 90 rotates in reverse, the paper feeding roller of the primary paper feeding assembly 30 rotates clockwise, driving the secondary reversing bracket 41 to rise, providing a paper path gap for the paper to be fed to the flipping primary paper feeding assembly 60, ensuring that the paper enters the flipping paper path. Preferably, the weight of the end of the movable flip plate 42 closest to the primary paper feeding assembly 30 is greater than the weight of the other end, with the lighter end of the movable flip plate 42 designated as the front end and the heavier end as the rear end, i.e., lighter at the front and heavier at the back. Rotating shafts are fixed at both ends of the movable flip plate 42, and these rotating shafts are rotatably connected to both ends of the secondary reversing bracket 41.

[0045] The secondary reversing assembly 40 has an important reversing function: When printing on the front side, the paper enters the secondary reversing assembly 40 from the primary paper feeding assembly 30. As the paper passes through the secondary reversing assembly 40, the forward traction force of the paper pushes open the front end of the movable flap 42 and enters the secondary paper feeding assembly 50. When printing on the back side, the paper is fed back from the secondary paper feeding assembly 50. The paper passes through the secondary reversing assembly 40. Due to gravity, the front end of the movable flap 42 is raised and opened, allowing the paper to smoothly enter the flipping primary paper feeding assembly 60. When the paper is fed from the flipping secondary paper feeding assembly 70 to the secondary reversing assembly 40, the forward traction force of the paper pushes open the front end of the movable flap 42 and smoothly enters the secondary paper feeding assembly 50.

[0046] Specifically, such as Figure 12 As shown, the paper output assembly 80 includes an output rubber roller 81 and an output pressure roller 82, with the outer periphery of the output pressure roller 82 configured as a metal pinwheel. In this embodiment, the output gear 83 is driven by a motor 90 to rotate the output rubber roller 81, and the output pressure roller 82 is rotatably connected to the machine body. The outer periphery of the output pressure roller 82 is configured as a metal pinwheel, and the tip of the metal pinwheel contacts the paper at a point, rather than the surface contact of a traditional roller. This reduces the contact area with the paper, lowers the risk of physical scratching of the printed area on the paper surface, and improves print quality.

[0047] In this embodiment, the paper feeding process is completed by a motor 90 and a transmission unit, which are mounted on a sheet metal bracket of the machine body. When the motor 90 rotates forward, it drives the transmission unit to perform paper picking and feeding actions, completing the front-side printing process. When the motor 90 rotates in reverse, it drives the transmission unit to feed paper in the opposite direction, entering the flipping paper path where it is flipped under the action of the first-stage flipping paper feeding assembly 60 and the second-stage flipping paper feeding assembly 70, completing the back-side printing process. The motor 90 provides power to the paper picking assembly 10, the first-stage paper feeding assembly 30, the second-stage paper feeding assembly 50, the paper output assembly 80, the first-stage flipping paper feeding assembly 60, and the second-stage flipping paper feeding assembly 70 through the gears of the transmission unit. The first-stage reversing assembly 20 achieves rotation reversal through the reversing gear set 22. The paper feeding roller in the first-stage paper feeding assembly 30 drives the second-stage reversing assembly 40 to move upward or downward, and cooperates with the movable flip plate 42 to achieve the reversal process, thereby completing the paper flipping process.

[0048] When the motor rotates 90 degrees forward, the transmission unit's transmission status is as follows: Figure 13 As shown. When the motor 90 rotates clockwise, the electromagnetic clutch 13 engages and rotates clockwise, driving the paper forward. After the paper picking action is completed, the electromagnetic clutch 13 is de-energized, and the paper picking gear 11 is in an idle state. The reversing gear set 22 in the first-stage reversing assembly 20 rotates counterclockwise, driving the first-stage reversing bracket 21 to rotate to a horizontal position, ensuring smooth paper path and preventing the paper head from hitting the main bracket or entering other paper paths and causing paper jams. The paper enters the first-stage paper feeding assembly 30, where the paper feeding roller is located below the paper feeding pressure roller. The first-stage paper feeding gear 31 rotates counterclockwise, driving the paper forward and simultaneously driving the second-stage reversing bracket 41 to move downward, which is more conducive to the paper being fed to the second-stage paper feeding assembly 50. In the second-stage paper feeding assembly 50, the paper feeding roller 52 is located above the paper feeding pressure roller 53. The second-stage paper feeding gear 51 rotates clockwise, driving the paper forward. In the paper output assembly 80, the paper output roller 81 is located below the paper output pressure roller 82. The paper output gear 83 rotates counterclockwise, driving the paper forward.

[0049] When the motor reverses 90 degrees, the transmission unit's transmission status is as follows: Figure 14As shown. When motor 90 reverses (rotates counterclockwise), paper output gear 83 rotates clockwise, driving the paper back. The paper retracts, and the original paper tail becomes the paper head, entering the secondary paper feeding assembly 50. The secondary paper feeding gear 51 rotates counterclockwise, and the paper is transported back through the secondary reversing assembly 40. The primary paper feeding gear 31 rotates clockwise, driving the secondary reversing bracket 41 to lift upwards, thus feeding the paper to the flipping primary paper feeding assembly 60. In the flipping primary paper feeding assembly 60, the paper feeding roller is located above the paper feeding pressure roller, flipping... The first-stage paper feeding gear 61 rotates counterclockwise to continue feeding the paper; when passing the first-stage reversing assembly 20, the reversing gear set 22 rotates clockwise to drive the first-stage reversing bracket 21 to rotate to a vertical position, so that the paper is smoothly fed to the second-stage paper feeding assembly 70; in the second-stage paper feeding assembly 70, the paper feeding roller is located below the paper feeding pressure roller, and the second-stage paper feeding gear 71 rotates counterclockwise to feed the paper toward the second-stage paper feeding assembly 50; the paper is fed to the second-stage paper feeding assembly 50 again to complete the reverse printing process.

[0050] The advantages and positive effects of this invention are:

[0051] 1. Enabled duplex printing on portable inkjet printers, improving printing efficiency and reducing paper waste;

[0052] 2. By setting up primary and secondary reversing components, the paper can be smoothly transported according to the set paper path, avoiding paper jams and ensuring smooth duplex printing;

[0053] 3. The double-sided paper path has a compact structure and precise transmission, which further improves portability.

[0054] The embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. It should be noted that implementations not illustrated or described in the drawings or the main text of the specification are forms known to those skilled in the art and have not been described in detail. Furthermore, the definitions of the various components described above are not limited to the specific structures, shapes, or methods mentioned in the embodiments, and those skilled in the art can easily modify or substitute them.

[0055] The embodiments of the present invention have been described in detail above, but the content described is only a preferred embodiment of the present invention and should not be considered as limiting the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A double-sided paper path structure for a portable inkjet printer, characterized in that, include: The paper path includes a front paper path and a flip paper path. The front paper path is equipped with a primary reversing component, a primary paper feeding component, a secondary reversing component, and a secondary paper feeding component. The flip paper path is equipped with a primary flip paper feeding component and a secondary flip paper feeding component. After front printing is completed, the paper is fed back to the secondary paper feeding component, passes through the secondary reversing component, enters the primary flip paper feeding component, and then passes through the primary reversing component to reach the secondary flip paper feeding component, thus completing the flipping action.

2. The double-sided paper path structure of a portable inkjet printer according to claim 1, characterized in that: It also includes, A paper feeding assembly is used to feed the paper to the primary reversing assembly; The paper output assembly is used to receive the paper fed by the secondary paper feeding assembly and output the paper.

3. The double-sided paper path structure of a portable inkjet printer according to claim 1, characterized in that: The paper feeding assembly includes a paper feeding gear and a paper feeding roller, and the paper feeding gear is equipped with an electromagnetic clutch.

4. The double-sided paper path structure of a portable inkjet printer according to any one of claims 1-3, characterized in that: The first-stage commutation component includes, The primary reversing bracket is equipped with a rotating shaft; A reversing gear set is disposed at one end of the first-stage reversing bracket and connected to the first-stage reversing bracket, and is used to drive the first-stage reversing bracket to rotate.

5. The double-sided paper path structure of a portable inkjet printer according to any one of claims 1-3, characterized in that: The primary paper feeding assembly, the secondary paper feeding assembly, the flipping primary paper feeding assembly, and the flipping secondary paper feeding assembly all include a paper feeding rubber roller and a paper feeding pressure roller, and a paper feeding gear is connected to the paper feeding rubber roller.

6. The double-sided paper path structure of a portable inkjet printer according to claim 5, characterized in that: The secondary reversing component is mounted on the paper feeding roller of the primary paper feeding component, and the paper feeding roller of the primary paper feeding component can drive the secondary reversing component to rotate.

7. The double-sided paper path structure of a portable inkjet printer according to claim 6, characterized in that: The secondary commutation component includes The secondary reversing bracket is connected at its end to the paper feeding roller of the primary paper feeding assembly; The movable flap is located on the side of the secondary reversing bracket away from the primary paper feeding assembly and is rotatably connected to the secondary reversing bracket.

8. The double-sided paper path structure of a portable inkjet printer according to claim 7, characterized in that: The end of the secondary reversing bracket is provided with a bushing, which is connected to the paper feeding roller of the primary paper feeding assembly.

9. The double-sided paper path structure of a portable inkjet printer according to claim 7 or 8, characterized in that: The weight of the movable flap closer to the primary paper feeding assembly is greater than the weight of the other end.

10. The double-sided paper path structure of a portable inkjet printer according to claim 2 or 3, characterized in that: The paper output assembly includes a paper output rubber roller and a paper output pressure roller, and the outer periphery of the paper output pressure roller is configured with a metal pin wheel.

Images