An ink cartridge with a new leak-proof ink structure

Abstract

The present invention discloses an ink cartridge with a novel ink leakage prevention structure, including: an ink cartridge body, which has a receiving cavity, a gas channel communicating with the receiving cavity, and a storage cavity inside; the gas channel includes a first gas channel and a second gas channel; the storage cavity is located between the first gas channel and the second gas channel and is respectively connected to the first gas channel and the second gas channel. The storage cavity includes a first chamber, a second chamber and a third chamber, and the first chamber, the second chamber and the third chamber are arranged adjacent to each other in pairs. By arranging a storage cavity including three chambers between the first gas channel and the second gas channel, and the three chambers are arranged adjacent to each other in pairs, the space inside the ink cartridge is effectively utilized, while improving the reliability of ink leakage prevention, simplifying the ink leakage prevention structure of the ink cartridge, and reducing the production process difficulty and cost of the ink cartridge.

Description

Technical Field

[0001] The present invention belongs to the technical field of printing devices, and particularly relates to an ink cartridge with a novel ink leakage prevention structure. Background Art

[0002] In the field of existing inkjet printer technology, as one of the key components, the design and performance of the ink cartridge directly affect the printing quality and user experience. Traditional ink cartridges mainly consist of an ink storage chamber for storing ink, an ink outlet for supplying ink to the printer, and a gas channel connecting the ink storage chamber and the external environment. Among them, the gas channel includes an air inlet, and the function of this gas channel is to introduce external air through the air inlet during the printing process to supplement the reduced space due to ink consumption, thereby maintaining the pressure balance inside the ink cartridge and ensuring that the ink can flow smoothly for printing use.

[0003] However, in practical applications, such traditional ink cartridges have a significant problem: due to the influence of surface tension, the ink in the ink storage chamber may form a capillary phenomenon and flow upward along the gas channel, and finally flow out of the ink cartridge through the air inlet, resulting in an ink leakage problem. To avoid this situation, the prior art usually adopts a complex ink leakage prevention structure composed of multiple parts such as a breathable membrane, a sponge, a spring, a seal, and a heat-sealing film on the gas channel. Although these measures can alleviate the ink leakage problem to a certain extent, they also bring new challenges. First, the use of multiple parts not only increases the production cost but also places higher requirements on the installation accuracy between each part, which undoubtedly increases the difficulty and complexity of production. Second, the complex structure may lead to a decrease in the overall reliability of the ink cartridge because after long-term use or experiencing bumpy transportation, some components may become loose or fail, thereby affecting the normal use of the ink cartridge.

[0004] In addition, traditional ink leakage prevention design schemes often fail to fully consider the stability requirements of the ink cartridge in different usage scenarios. For example, when the ink cartridge is not properly placed or is subjected to vibration, the existing ink leakage prevention mechanism may not be able to completely prevent the ink from leaking through the air inlet. Especially during transportation, if the ink cartridge encounters severe vibration or inversion, the ink is more likely to break through the existing protection measures and flow into the gas channel, causing an ink leakage phenomenon. In this case, when the user first opens a new ink cartridge and prepares to use it, it may be found that the ink cartridge has already leaked ink, which not only wastes valuable ink resources but may also pollute or even damage the printer. Summary of the Invention

[0005] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide an ink cartridge with a novel ink leakage prevention structure. By optimizing the internal structure design of the ink cartridge, it effectively prevents the ink from entering the gas channel and flowing out through the air inlet due to the action of surface tension, thereby completely solving the ink leakage problem and improving the overall performance of the product.

[0006] To solve the above problems, the technical solution adopted by the present invention is as follows: An ink cartridge with a novel anti-ink leakage structure, comprising:

[0007] An ink cartridge body, within which there is a receiving cavity;

[0008] A gas channel connecting the receiving cavity, including a first gas channel and a second gas channel;

[0009] A storage cavity, which is located between the first gas channel and the second gas channel and is respectively connected to the first gas channel and the second gas channel. The storage cavity includes a first chamber, a second chamber and a third chamber, and the first chamber, the second chamber and the third chamber are arranged adjacent to each other in pairs.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: By arranging a storage cavity including three chambers between the first gas channel and the second gas channel, and the three chambers are arranged adjacent to each other in pairs, the space inside the ink cartridge is effectively utilized, ensuring that when the ink forms a capillary phenomenon under the influence of surface tension, it can be effectively intercepted in the storage cavity, avoiding direct outflow through the gas channel and causing ink leakage. While improving the reliability of anti-ink leakage, the anti-ink leakage structure in the ink cartridge is simplified, reducing the production process difficulty and cost of the ink cartridge. Especially when the ink cartridge is in an abnormal position (such as inverted or tilted), this design can better reflect its superiority. The storage cavity is composed of a first chamber, a second chamber and a third chamber, and the first chamber, the second chamber and the third chamber are arranged adjacent to each other in pairs, forming a multi-level protection system. Such a structural layout not only increases the resistance of ink flow, but also provides additional safety guarantees. For example, the ink in the receiving cavity forms a capillary phenomenon under the influence of surface tension and will flow into the second gas channel and be further intercepted in the third chamber. However, if only a single chamber is provided, when the ink cartridge is jolted during transportation or the user operates it incorrectly and the ink cartridge is not placed upright, the ink intercepted in the third chamber may further flow into the first gas channel. When the user first uses the ink cartridge, the ink flowing to the first gas channel will further flow to the outside of the ink cartridge, resulting in ink leakage. The storage cavity of the present invention is provided with a first chamber, a second chamber and a third chamber, and the three chambers are arranged adjacent to each other in pairs. For example, the three chambers are arranged in a product shape. When the ink is intercepted in the third chamber, even if the ink cartridge is jolted or not placed upright, due to the height difference between the third chamber and the first chamber, and there is also a height difference between the first chamber and the second chamber, it is very difficult for the ink in the third chamber to enter the first chamber, let alone enter the second chamber, which greatly reduces the risk of ink leaking to the outside through the first gas channel.

[0011] The above-mentioned ink cartridge, wherein the first gas channel is located at the upper right of the accommodating cavity, and the second gas channel is located at the upper left of the accommodating cavity; a first air inlet is provided at the right end of the first gas channel, and a first communication port is provided at the left end; a second communication port is provided at the right end of the second gas channel, and a third communication port is provided at the left end, and the third communication port communicates with the accommodating cavity.

[0012] The above-mentioned ink cartridge, wherein the second chamber communicates with the first communication port, and the third chamber communicates with the second communication port.

[0013] The above-mentioned ink cartridge, wherein the first gas channel and the second gas channel respectively have a straight segment and a bent segment.

[0014] The above-mentioned ink cartridge, wherein the volume of the first chamber is respectively greater than the volumes of the second chamber and the third chamber.

[0015] The above-mentioned ink cartridge, wherein a valve mounting hole and a check valve are provided between the first chamber and the second chamber, and the check valve can be inserted into the valve mounting hole.

[0016] The above-mentioned ink cartridge, wherein a first channel is provided between the first chamber and the second chamber, a second channel is provided between the second chamber and the first gas channel, and a third channel is provided between the third chamber and the second gas channel; the second channel is located below the first communication port, the third channel is located below the second communication port, the first channel communicates the first chamber and the second chamber; the second channel communicates the second chamber and the first gas channel, and the third channel communicates the third chamber and the second gas channel.

[0017] The above-mentioned ink cartridge, wherein a second seal is provided at the connection between the second channel and the first gas channel, and a third seal is provided at the connection between the third channel and the second gas channel.

[0018] The above-mentioned ink cartridge further includes an ink outlet, which is located at the lower left of the accommodating cavity and communicates with the accommodating cavity.

[0019] The above-mentioned ink cartridge, wherein the straight segment has a path that continuously changes along its length direction, and the center line of the straight segment extends along a non-linear trajectory; a plurality of bending blocks are provided in the bent segment, and the bending blocks are used to buffer the flow rate of the gas. Description of the Drawings

[0020] Figure 1 It is one of the schematic diagrams of the ink cartridge structure of the embodiment of the present invention;

[0021] Figure 2 It is the second schematic diagram of the ink cartridge structure of the embodiment of the present invention;

[0022] Figure 3 The third schematic diagram of the ink cartridge structure according to the embodiment of the present invention;

[0023] Figure 4 The schematic diagram of the storage cavity structure of the ink cartridge according to the embodiment of the present invention;

[0024] Explanation of the reference numerals in the drawings: 100 ink cartridge body, 110 accommodating cavity, 111 front wall, 112 rear wall, 113 top wall, 114 bottom wall, 200 first gas channel, 210 straight segment, 220 bent segment, 230 first air inlet, 240 first communication port, 250 bent block, 300 second gas channel, 310 second communication port, 320 third communication port, 400 storage cavity, 410 first chamber, 420 second chamber, 430 third chamber, 411 one-way valve, 412 first channel, 413 valve mounting hole, 421 second channel, 431 third channel, 500 ink outlet. Specific embodiments

[0025] The embodiments of the present invention will be described in detail below, referring to Figures 1 to 4, an embodiment of the present invention provides an ink cartridge with a novel ink leakage prevention structure, including: an accommodation chamber 110 is provided inside the ink cartridge body 100; a gas channel and a storage chamber 400 communicating with the accommodation chamber 110, the gas channel includes a first gas channel 200 and a second gas channel 300, the first gas channel 200 is located in the upper right of the accommodation chamber 110, and the second gas channel 300 is located in the upper left of the accommodation chamber 110; the storage chamber 400 is located between the first gas channel 200 and the second gas channel 300 and communicates with the first gas channel 200 and the second gas channel 300 respectively. The storage chamber 400 includes a first chamber 410, a second chamber 420 and a third chamber 430, and the first chamber 410, the second chamber 420 and the third chamber 430 are arranged adjacent to each other in pairs. By arranging the storage chamber 400 including three chambers between the first gas channel 200 and the second gas channel 300, and the three chambers are arranged adjacent to each other in pairs, the space inside the ink cartridge is effectively utilized, ensuring that when the ink forms a capillary phenomenon under the influence of surface tension, it can be effectively intercepted in the storage chamber 400, avoiding direct outflow from the gas channel and causing ink leakage. While improving the reliability of ink leakage prevention, the ink leakage prevention structure in the ink cartridge is simplified, and the production process difficulty and cost of the ink cartridge are reduced. Especially when the ink cartridge is in an abnormal position (such as inverted or tilted), this design can better reflect its superiority. The storage chamber 400 is composed of a first chamber 410, a second chamber 420 and a third chamber 430, and the first chamber 410, the second chamber 420 and the third chamber 430 are arranged adjacent to each other in pairs, forming a multi-level protection system. This structural layout not only increases the resistance of ink flow but also provides additional safety protection. For example, the ink in the accommodation chamber 110 forms a capillary phenomenon under the influence of surface tension and flows into the second gas channel 300 and is further intercepted in the third chamber 430. However, if only a single chamber is provided, when the ink cartridge is jolted during transportation or the user operates it incorrectly and the ink cartridge is not placed upright, the ink intercepted in the third chamber 430 may further flow into the first gas channel 200. When the user first uses the ink cartridge, the ink flowing to the first gas channel 200 will flow to the outside of the ink cartridge and cause ink leakage; the storage chamber 400 of the present invention is provided with a first chamber 410, a second chamber 420 and a third chamber 430, and the three chambers are arranged adjacent to each other in pairs. For example, the three chambers are arranged in a pin shape. When the ink is intercepted in the third chamber 430, even if the ink cartridge is jolted or not placed upright, due to the height difference between the third chamber 430 and the first chamber 410, and there is also a height difference between the first chamber 410 and the second chamber 420, it is very difficult for the ink in the third chamber 430 to enter the first chamber 410, let alone enter the second chamber 420. This greatly reduces the risk of ink leaking to the outside through the first gas channel 200.

[0026] Further, referring to Figure 3, the right end of the first gas channel 200 of the ink cartridge mentioned in this application is provided with a first air inlet 230, and the left end is provided with a first communication port 240; the right end of the second gas channel 300 is provided with a second communication port 310, and the left end is provided with a third communication port 320, and the third communication port 320 communicates with the accommodation chamber 110. By respectively arranging the first air inlet 230 and the first communication port 240 at both ends of the first gas channel 200, and respectively arranging the second communication port 310 and the third communication port 320 at both ends of the second gas channel 300 (the latter is directly connected to the accommodation chamber 110), a complex air circulation network is formed. The gas in the ink cartridge flows along a specifically designed path. During the printing process, external air enters the first gas channel 200 through the first air inlet 230, and then continuously replenishes the gas to the ink space consumed by printing through the first gas channel 200, the storage chamber 400, and the second gas channel 300, so as to maintain the pressure balance in the accommodation chamber 110 and ensure that the ink cartridge can discharge ink normally so that the printing device can print normally. Further, before the ink cartridge is installed and used in the printing device, the inside of the ink cartridge is usually evacuated, and then the first air inlet 230 is sealed with a sealing film to make the inside of the ink cartridge in a vacuum state. When the ink cartridge needs to be used and the sealing film is torn off, an air pressure difference is formed inside and outside the ink cartridge, and external gas can smoothly enter the first gas channel 200 through the first air inlet 230. Further, referring to Figure 3 , the port on the upper wall surface of the first communication port 240 is a vacuum pumping port, which is used for the vacuum pumping of the ink cartridge. However, after the first air inlet 230 is sealed, the ink surface in the accommodation chamber 110 will form a capillary phenomenon due to the surface tension factor, and then enter the first gas channel 200 through the second gas channel 300. When the user tears off the sealing film of the first air inlet 230 and uses the ink cartridge, the ink entering the first gas channel 200 may flow out of the ink cartridge through the first air inlet 230, causing ink leakage. In the embodiment of this application, by arranging a storage chamber 400 that is respectively connected to the first gas channel 200 and the second gas channel 300 in the accommodation chamber 110, between the first gas channel 200 and the second gas channel 300, when the ink in the accommodation chamber 110 flows into the second gas channel 300 due to capillary phenomenon, it is intercepted in the storage chamber 400, and the ink will not flow out of the ink cartridge through the first air inlet 230 to cause ink leakage.

[0027] Further, in an embodiment of this application, referring to Figure 2 and Figure 4, a first channel 412 is provided between the first chamber 410 and the second chamber 420, a second channel 421 is provided between the second chamber 420 and the first gas channel 200, and a third channel 431 is provided between the third chamber 430 and the second gas channel 300; the second channel 421 is located below the first communication port 240, the third channel 431 is located below the second communication port 310, and the first channel 412 connects the first chamber 410 and the second chamber 420; the second channel 421 connects the second chamber 420 and the first gas channel 200, and the third channel 431 connects the third chamber 430 and the second gas channel 300. The first channel 412 is used to connect the first chamber 410 and the second chamber 420, enabling gas to have a certain fluidity between the two chambers. The second channel 421 and the third channel 431 are respectively responsible for connecting the second chamber 420 and the third chamber 430 with their corresponding gas channels, ensuring that gas can smoothly enter or exit the accommodation chamber 110, balancing the pressure inside the ink cartridge, and contributing to maintaining a stable printing process. By arranging the second channel 421 below the first communication port 240 and the third channel 431 below the second communication port 310, the ink leakage prevention ability of the system is further enhanced. Such a layout utilizes the gravitational force. When ink accidentally enters the gas channel, it will be guided by gravity to the lower channel instead of easily flowing out through the communication port. This design is particularly important when the ink cartridge is subjected to vibration or inversion because it can effectively intercept the ink and prevent it from leaking out through the air inlet. At the same time, the first channel 412, the second channel 421, and the third channel 431 all extend to positions close to the bottom of their corresponding chambers, so that when ink enters each chamber due to capillary action, it first reaches the bottom of each chamber, avoiding the ink that enters the chamber first due to capillary action from directly adhering to the top position of the chamber.

[0028] Furthermore, in combination with Figure 4As shown in the figure, a valve mounting hole 413 and a check valve 411 are provided between the first chamber 410 and the second chamber 420, and the check valve 411 can be inserted into the valve mounting hole 413. Due to capillary action, the ink in the accommodating chamber 110 enters the second gas passage 300 through the third communication port 320 at the left end of the second gas passage 300, and is first retained in the third chamber 430. Then, since the first chamber 410 is located above the third chamber 430, it is not easy for the ink to overcome the influence of gravity and flow back into the first chamber 410 from the third chamber 430. At the same time, a check valve 411 is added between the third chamber 430 and the first chamber 410 to set up a physical barrier, which further ensures that the ink is difficult to enter the first chamber 410 and improves the reliability of preventing ink leakage. Specifically, before the ink cartridge is used, the check valve 411 is in a closed state when the inside of the ink cartridge is evacuated. Therefore, when the check valve 411 is in a closed state, the ink retained in the third chamber 430 cannot further enter the first chamber 410 due to capillary action or due to being placed upside down or jolted, etc., which improves the reliability of preventing ink leakage. When the sealing film of the first air inlet 230 is torn off and the ink cartridge is used, after the external gas enters the storage chamber 400, the check valve 411 is opened by the impact of the external gas. Therefore, the external gas can also smoothly flow into the accommodating chamber 110. Further, by arranging the second chamber 420 adjacent to the third chamber 430 below the first chamber 410, even in extreme cases, such as when the sealing performance of the check valve 411 is damaged, if the ink cartridge is placed upside down or vibrated at this time, the ink may further climb into the first chamber 410 from the third chamber 430. Therefore, by arranging the second chamber 420 below the first chamber 410, a height difference is formed between the two, adding an additional guarantee for preventing ink leakage.

[0029] Compared with the traditional complex ink leakage prevention structure composed of multiple parts such as a breathable film, a sponge, a spring, a seal, a hot melt film, etc., this solution simplifies the specific structure of the ink leakage prevention structure while improving the reliability of ink leakage prevention through a reasonable layout of three chambers and channels and simple mechanical components (such as the check valve 411), reducing the production process difficulty and cost of the ink cartridge. At the same time, this design is also convenient for later maintenance and repair, improving the maintainability of the product.

[0030] Furthermore, a second seal is provided at the connection between the second channel 421 and the first gas channel 200, and a third seal is provided at the connection between the third channel 431 and the second gas channel 300. The second seal and the third seal are not shown in the drawings. In one embodiment, the second seal and the third seal are sealing rubber rings. The second seal and the third seal respectively ensure the sealing performance of the connection between the second channel 421 and the first gas channel 200 and the connection between the third channel 431 and the second gas channel 300, preventing gaps at the connection positions and avoiding the ink in the accommodation cavity 110 flowing directly to the first gas channel 200 through the gaps due to capillary action across the storage cavity 400.

[0031] Furthermore, the first gas channel 200 and the second gas channel 300 respectively have a straight segment 210 and a bent segment 220. Of course, the present application does not limit the specific structures of the straight segment 210 and the bent segment 220. Preferably, the straight segment 210 has a continuously varying path along its length direction, and the center line of the straight segment 210 extends along a non-linear trajectory; multiple bending blocks 250 are provided in the bent segment 220, and the bending blocks 250 are used to buffer the gas flow rate. The existence of the straight segment 210 ensures that air can enter or leave the gas channel quickly and directly, which is crucial for maintaining the pressure balance inside the ink cartridge. At the same time, the bent segment 220 can prevent excessive pressure fluctuations caused by too high gas flow rate, thus affecting the smooth outflow of the ink. Multiple bending blocks 250 are provided in the bent segment 220. These bending blocks 250 can not only effectively buffer the gas flow rate but also reduce the turbulence phenomenon by changing the direction of the air flow, making the air more evenly distributed in the entire gas channel. This characteristic helps to prevent the problem of unstable ink jetting caused by uneven air flow velocity. Further, the path design of the straight segment 21 is not a completely straight line in the traditional sense but shows a continuously varying form along the length direction, that is, the center line extends along a non-linear trajectory. The purpose of this design is to optimize the air circulation path to better meet the actual needs inside the ink cartridge. Different from the straight-line channel that may cause problems such as overly concentrated air flow or turbulence, the non-linear trajectory can make the air flow more smoothly and evenly distributed in the entire channel. On the one hand, it can reduce the disturbance of the air flow impact on the ink and ensure the stable outflow of the ink; on the other hand, it helps to more effectively adjust the pressure balance inside the ink cartridge, avoid pressure fluctuations caused by uneven air flow velocity, and thus improve the printing quality.

[0032] Further, referring to Figure 4, in the storage cavity 400 mentioned in the present application, the volume of the first chamber 410 is respectively larger than the volumes of the second chamber 420 and the third chamber 430. On the one hand, the first chamber 410 with a larger volume can increase the ink storage capacity, which means that even in extreme cases (such as the ink cartridge being inverted or violently shaken), the ink has enough space to be temporarily stored, reducing the risk of leakage. On the other hand, when the sealing film of the first air inlet 230 is torn off to use the ink cartridge, due to the volume of the first chamber 410 being larger than that of the third chamber 430, an air pressure difference will be formed between the two chambers, enabling the gas to flow more smoothly from the first chamber 410 into the third chamber 430.

[0033] Furthermore, the ink cartridge mentioned in the present application further includes an ink outlet 500. The ink outlet 500 is located at the lower left of the accommodating cavity 110, and the ink outlet 500 is connected to the accommodating cavity 110. Setting the ink outlet 500 at the lower left of the accommodating cavity 110 helps to optimize the ink flow path. The ink naturally tends to flow downward under the action of gravity. Therefore, the position design of the ink outlet 500 can make full use of this natural trend, enabling the ink to flow out of the accommodating cavity 110 more smoothly. This design reduces the resistance encountered by the ink during the outflow process and improves the ink supply efficiency. Especially in long-term continuous printing tasks, this optimized flow path can ensure the continuous and stable supply of ink, avoiding printing interruptions or quality problems caused by insufficient ink supply.

[0034] Further, thin film parts are respectively provided at the top of the first chamber 410 and the bottoms of the second chamber 420 and the third chamber 430. In one embodiment, since a one-way valve 411 needs to be installed between the first chamber 410 and the third chamber 430, the peripheral wall part of the storage cavity 400 can be integrally formed by die casting, with the top and bottom being hollowed out. After installing the one-way valve 411, the thin film parts are then fused to the top and bottom of the storage cavity 4️00.

[0035] It should be noted that in the description of the present invention, if there are descriptions related to orientation, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., they are all based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation to the present invention.

[0036] In the description of the present invention, "several" means one or more, "multiple" means two or more. "Greater than", "less than", "exceeding", etc. are understood as not including the recited number, and "above", "below", "within", etc. are understood as including the recited number. If there is a description of "first" or "second", etc., it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0037] In the description of the present invention, unless otherwise clearly defined, terms such as "arrangement", "installation", "connection", etc. shall be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0038] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantive changes and substitutions made by those skilled in the art based on the present invention fall within the scope of protection required by the present invention.

Claims

1. An ink cartridge with a novel anti-ink leakage structure, characterized in that: include: An ink cartridge body (100), wherein a receiving chamber (110) is provided inside the ink cartridge body (100); A gas channel connected to the accommodating cavity (110), comprising a first gas channel (200) and a second gas channel (300); A storage chamber (400), wherein the storage chamber (400) is located between the first gas channel (200) and the second gas channel (300), and is connected to the first gas channel (200) and the second gas channel (300), respectively. The storage chamber (400) includes a first chamber (410), a second chamber (420) and a third chamber (430). The first chamber (410), the second chamber (420) and the third chamber (430) are arranged adjacent to each other in pairs, and the three chambers are arranged in a triangular shape. The first gas channel (200) is located at the upper right of the accommodating chamber (110), and the second gas channel (300) is located at the upper left of the accommodating chamber (110). The first gas channel (200) is provided with a first air inlet (230) at the right end and a first connecting port (240) at the left end. The second gas channel (300) is provided with a second connecting port (310) at the right end and a third connecting port (320) at the left end. The third connecting port (320) is provided at the left end. ) is connected to the accommodating chamber (110); the volume of the first chamber (410) is respectively greater than the volume of the second chamber (420) and the third chamber (430); a first channel (412) is provided between the first chamber (410) and the second chamber (420), a second channel (421) is provided between the second chamber (420) and the first gas channel (200), and a third channel (431) is provided between the third chamber (430) and the second gas channel (300); the second channel (421) is located below the first connecting port (240), the third channel (431) is located below the second connecting port (310), the first channel (412) connects the first chamber (410) and the second chamber (420); the second channel (421) connects the second chamber (420) and the first gas channel (200), and the third channel (431) connects the third chamber (430) and the second gas channel (300).

2. The ink cartridge according to claim 1, wherein The second chamber (420) is in communication with the first communication port (240), and the third chamber (430) is in communication with the second communication port (310).

3. The ink cartridge according to claim 1, wherein The first gas channel (200) and the second gas channel (300) respectively have a straight section (210) and a bent section (220).

4. The ink cartridge according to claim 1, wherein A valve mounting hole (413) and a one-way valve (411) are provided between the first chamber (410) and the second chamber (420), and the one-way valve (411) can be plugged into the valve mounting hole (413).

5. The ink cartridge according to claim 1, wherein A second sealing member is provided at the connection between the second channel (421) and the first gas channel (200), and a third sealing member is provided at the connection between the third channel (431) and the second gas channel (300).

6. The ink cartridge according to claim 1, wherein It also includes an ink outlet (500), the ink outlet (500) is located at the lower left of the accommodating cavity (110), and the ink outlet (500) is communicated with the accommodating cavity (110).

7. The ink cartridge according to claim 3, wherein The straight section (210) has a path that continuously changes along its length, and the center line of the straight section (210) extends along a non-linear trajectory; a plurality of bending blocks (250) are provided in the bending section (220), and the bending blocks (250) are used to buffer the flow rate of the gas.

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