Ink refilling container

Abstract

The utility model discloses an ink supplementing container used for supplementing ink to an ink tank of ink-jet printing equipment, which comprises a container main body used for containing ink, one end of the container main body is provided with an opening, the container main body is made of deformable materials, an ink flow limiting component is internally provided with a through hole, and the through hole comprises an ink outlet. The ink flow limiting component is arranged at the opening, when the ink flow limiting component is in a natural state, ink cannot flow out of the ink outlet of the ink flow limiting component, and when the ink supplementing container is installed on the ink tank to supplement the ink to the ink tank, the ink outlet is expanded, and the ink flows into the ink supplementing inlet from the ink supplementing container. The ink supplementing container is simple in structure, a valve structure is not arranged at the ink outlet, and the ink supplementing container is communicated with the outside before being installed on an ink tank, so that the phenomenon that ink splashes to pollute the environment during installation is avoided.

Description

[0001] This utility model claims the priority of a Chinese prior application with an application date of February 2, 2023, an invention name of “Ink Refill Container” and an application number of 202320103048.X. All contents of the prior application are fully cited in this application. Technical Field

[0002] The utility model belongs to the field of inkjet printing, and in particular relates to an ink replenishing container for replenishing ink into an ink tank of an inkjet printing device. Background Art

[0003] Generally, inkjet printing equipment uses an ink tank placed inside the equipment to provide ink for spraying onto a carrier for recording. The space for placing the ink tank inside the equipment is limited, so the ink stored in the ink tank's accommodating cavity is also limited. Some ink tanks are provided with an ink replenishing structure to replenish ink into the ink tank using an ink replenishing container. Figure 1 The structure of the ink replenishing part of an ink tank is shown. Figure 2 The following is a schematic diagram of its cross-sectional structure. Figure 1 and Figure 2 As shown, the ink replenishing portion 91 is provided with a recess 92 for accommodating an ink replenishing container, an upwardly protruding ink guide column 93 is provided in the middle of the recess 92, and an ink replenishing inlet 94 connected to the accommodating cavity of the ink tank is provided in the middle of the ink guide column 93.

[0004] When the ink replenishing container is used to replenish the ink in the ink tank, in order to prevent the ink from leaking before the ink replenishing container is installed in the ink replenishing part, a valve is generally provided at the ink outlet of the ink replenishing container. For example, Chinese utility model patent CN207291315U discloses an ink replenishing container, the ink outlet forming part of the ink replenishing container has an ink outlet, and a valve structure is provided at the ink outlet. The valve structure abuts against the inlet of the ink tank to open the valve, that is, before the ink replenishing container is installed in the ink tank, the ink replenishing container is not connected to the outside world. When the temperature rises, the air in the ink replenishing container expands to make it have pressure inside. When the ink replenishing container is inserted into the ink tank, the pressure is released instantly, causing the ink to splash outward and cause environmental pollution. Summary of the invention

[0005] In view of the problems existing in the prior art, the main purpose of the utility model is to provide an ink refilling container which will not cause ink splashing when refilling ink in an ink tank.

[0006] In order to achieve the above-mentioned main purpose, the utility model provides an ink replenishing container, which is used for replenishing ink in an ink tank of an inkjet printing device, the ink tank having an ink replenishing inlet, the ink replenishing container comprising a container body for containing ink, the container body having an opening at the top, the container body being closed at the bottom, an ink flow limiting component being arranged at the opening, the ink flow limiting component being made of a deformable material and having an ink outlet, the size of the ink outlet being arranged so that when the ink flow limiting component is in a natural state, the ink flow limiting component limits the ink from flowing out of the ink outlet, when the ink replenishing container is inverted and mounted on the ink tank to replenish the ink tank with ink, the ink outlet is expanded, and ink flows from the ink replenishing container into the ink replenishing inlet.

[0007] It can be seen from the above scheme that before the ink refilling container is installed on the ink tank, air can enter and exit the ink refilling container through the ink outlet, so that the interior of the ink refilling container can be connected with the outside world, and the pressure inside the ink refilling container is balanced with the outside world. When installed on the ink tank to refill ink, there will be no ink splashing to pollute the environment, and the ink refilling container has a simple structure and is easy to manufacture.

[0008] According to a specific embodiment of the utility model, the ink replenishing container further comprises an outer cover arranged outside the ink flow limiting component and detachably connected to the container body. During the transportation of the ink replenishing container, the outer cover protects the ink flow limiting component and seals the ink replenishing container, and the outer cover can be opened before using the ink replenishing container to replenish ink.

[0009] According to a specific embodiment of the utility model, the ink replenishment inlet is arranged on the ink guide column, and when the ink replenishment container is installed on the ink tank, the ink guide column penetrates the ink outlet and expands it. Preferably, the central axis of the ink guide column is consistent with the central axis of the ink outlet, and the ink outlet is evenly stressed during installation, and the ink outlet is tightly fitted with the outer wall of the ink guide column, so that ink leakage is not likely to occur.

[0010] According to a specific embodiment of the utility model, along the direction from the opening to the bottom of the container body, the ink flow limiting component is provided with a contraction portion that contracts toward the central axis of the opening and forms the ink outlet at the top of the contraction portion. When the ink replenishing container is inverted, that is, the opening is downward, the pressure and impact force applied by the ink in the container to the contraction portion of the ink flow limiting component cause the ink outlet to tend to become smaller, so that the ink is not easy to leak from the ink outlet; and when the ink replenishing container is installed in the ink tank, the setting of the contraction portion allows the ink guide column to be guided by the contraction portion and gradually cooperate with the ink outlet, which is convenient for installation and the ink guide column and the ink outlet cooperate more closely.

[0011] According to a specific embodiment of the utility model, a sealing sheet is provided on the ink flow limiting component at a position opposite to the ink outlet, and the sealing sheet is torn off before the ink replenishing container is installed on the ink tank or is broken during the process of installing the ink replenishing container on the ink tank. The sealing sheet is provided so that during the transportation of the ink replenishing container, the ink therein will not leak from the ink outlet under the action of impact force. When the pressure in the ink replenishing container is relatively high, the ink replenishing container can be placed upright and the sealing sheet can be torn off so that the air in the ink replenishing container is discharged from the ink outlet, so as to achieve pressure balance between the ink replenishing container and the outside world, and then the ink replenishing container can be installed in the ink tank to replenish ink. When the pressure in the ink replenishing container is roughly balanced with the outside world, the sealing sheet can be broken during the process of installing it to the ink tank, and ink splashing will not occur.

[0012] According to a specific embodiment of the utility model, the outer cover has a protrusion that cooperates with the contraction portion to seal the ink outlet. Through the provision of the protrusion, the outer cover can seal the ink outlet while sealing the ink replenishing container, further preventing ink leakage.

[0013] According to a specific embodiment of the utility model, the container body is provided with a necked portion, the opening is provided at the top of the necked portion, and a buffer component is provided in the container body against which the shoulder of the necked portion abuts. The provision of the buffer component can reduce the impact of the ink in the ink replenishment container on the ink outlet, thereby preventing ink leakage.

[0014] According to a specific embodiment of the utility model, the buffer component is provided with a plurality of holes through which ink can pass. The multi-hole arrangement can further enhance the buffering and dispersion effect.

[0015] According to a specific embodiment of the utility model, a depression protruding from the outer circumference to the inside is provided on the outer wall of the container body, and the depression is used to increase the pressure resistance of the container body, so that the ink is not easy to leak from the ink outlet.

[0016] According to a specific implementation of the utility model, the depressions are evenly arranged in plurality.

[0017] In order to more clearly illustrate the above-mentioned objectives, technical solutions and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the ink replenishing part of the ink tank;

[0019] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure of;

[0020] Figure 3 It is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0021] Figure 4 yes Figure 3 A schematic diagram of the cross-sectional structure of;

[0022] Figure 5 It is a structural schematic diagram of the ink flow limiting component in Embodiment 1 of the utility model;

[0023] Figure 6 yes Figure 5 A schematic diagram of the cross-sectional structure of;

[0024] Figure 7 This is a schematic diagram of the structure of the ink tank when the ink is replenished with ink in Embodiment 1 of the utility model;

[0025] Figure 8 It is a cross-sectional structural schematic diagram of Embodiment 2 of the present utility model;

[0026] Fig. 9 It is a schematic cross-sectional structure diagram of Embodiment 3 of the present utility model;

[0027] Fig.10 It is a schematic diagram of the structure of the buffer component in Embodiment 3 of the present utility model;

[0028] Fig.11 It is a schematic cross-sectional structure diagram of embodiment 4 of the present utility model. DETAILED DESCRIPTION

[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but it is easy for those skilled in the art to understand that the present invention can also be implemented in other ways different from those described herein. Therefore, other possible implementation methods that can be known by those skilled in the art based on the embodiments described in this application all belong to the protection scope of this application.

[0030] Example 1

[0031] Figure 3 and Figure 4 A structure of an embodiment of the utility model is shown. Figure 3 and Figure 4As shown, the ink replenishing container 10 has a container body composed of a connecting component 12 and a main containing part 13. The main containing part is a bottle-shaped body with an opening at the top and a closed bottom, the bottle mouth 131 has an opening, the bottom 132 is closed, and the internal space is used to contain ink. The connecting component 12 has a large diameter part and a small diameter part, wherein the large diameter part is detachably connected to the bottle mouth 131 of the main containing part 13 through a thread, and a protrusion 121 protruding toward its central axis is provided at the opening of the small diameter part, and the ink flow limiting component 14 is installed and fixed on the protrusion 121, that is, the opening of the container body is the opening of the small diameter part of the connecting component 12, and the ink flow limiting component 14 is installed and fixed on the opening. It can be understood that, in addition to the protrusion, other forms of structures can be provided at the opening to fix the ink flow limiting component 14. The outer cover 11 is sleeved on the outside of the small diameter part of the connecting component 12, and a protrusion 111 is provided thereon to abut against the ink flow limiting component 14 to seal the ink replenishing container 10 and the ink outlet. A seal 15 is also provided between the connecting member 12 and the main containing portion 13 to prevent ink from overflowing from the connection between the two. During the transportation of the ink replenishing container, the outer cover protects the ink flow limiting member and seals the ink replenishing container. The outer cover can be opened before using the ink replenishing container to replenish ink.

[0032] It is understandable that the ink replenishing container can be provided in other forms, such as the container body can be integral without detachable connecting parts, and the container body can also be provided in any other shape, such as barrel, box, spherical, etc., as long as it can accommodate the ink for replenishment. Preferably, the top of the container body has a small-sized protruding portion with an opening to facilitate installation or cooperation with the ink tank of the inkjet printing device.

[0033] Figure 5 and Figure 6 The structure of the ink flow limiting component 14 is shown. Figure 5 and Figure 6As shown, the outer periphery of the ink flow limiting component 14 has a mounting portion 141, and the mounting portion 141 is used to connect with the protrusion 121 of the connecting component 12, and the ink flow limiting component 14 has a through hole inside. The through hole is arranged along the direction from the opening of the container body to the bottom, and the through hole is divided into a guide portion 142, a contraction portion 143 and an ink outlet 144, that is, the outer opening of the through hole away from the container body is larger, and the opening closer to the inside of the container body is smaller and is set as the ink outlet, and there is a gap between the outer wall of the contraction portion and the inner wall of the small diameter portion. When the ink replenishment container is transported, the protrusion 111 of the outer cover 11 abuts against the contraction portion 143 to form a seal for the ink outlet. The size of the ink outlet 144 can be set according to factors such as the density, viscosity and surface tension of the ink, so that in a natural state, when the ink replenishment container is inverted, the ink will not flow out from the ink outlet 144, for example, the diameter of the ink outlet can be set to 1mm to 5mm, preferably 1.5mm to 3mm. The ink flow limiting component 14 is made of a deformable material, such as silicone, rubber, sponge, etc., so that the ink outlet can be expanded under the action of external force, and the ink can flow out from the expanded ink outlet 144.

[0034] It is understandable that the ink flow limiting component can be set as other forms of structure, as long as it can be fixed at the opening of the container body and has a small ink outlet (the ink cannot pass through under the action of the ink surface tension). Compared with the valve structure in the background art, the setting of the ink flow limiting component makes the ink replenishing container structure simple and easy to manufacture and will not cause splashing during installation.

[0035] When using the embodiment of the utility model to refill the ink tank with ink, first, the bottom of the ink refilling container 10 is placed upright with the opening downward and the opening upward, and the outer cover 11 is opened, so that the ink outlet 144 is opened, and air can enter and exit the ink refilling container through the ink outlet, so that the inside of the ink refilling container can be connected to the outside world, and the pressure in the ink refilling container is balanced with the outside world. Then, the ink refilling container 10 is turned upside down with its opening downward. Due to the effect of surface tension, the ink is not easy to flow out from the ink outlet 144. In addition, the pressure and impact force applied by the ink in the ink refilling container to the contraction portion 143 of the ink flow limiting component 14 causes the ink outlet 144 to tend to become smaller, so that the ink is less likely to leak from the ink outlet 144. Then, the ink refilling container 10 is installed on the ink refilling portion 91 of the ink tank, as shown in FIG. Figure 7As shown. Preferably, the central axis of the ink guide column is consistent with the central axis of the ink outlet. During installation, the ink outlet will be uniformly stressed, and the ink outlet is tightly fitted with the outer wall of the ink guide column, which makes it difficult for ink to leak. The connecting component 12 of the ink replenishing container is installed in the recess of the ink replenishing part 91, and the ink guide column 93 extends into the through hole of the ink flow limiting component 14. The guide portion 142 is formed as a guide for the ink guide column, and then the ink guide column 93 enters the contraction portion 143 along the guide portion 142. When the inner diameter of the contraction portion 143 is smaller than the outer diameter of the ink guide column 93, the contraction portion 143 is stretched open and tightly attached to the outer wall of the ink guide column 93. With the further installation of the ink replenishing container, the ink guide column 93 expands the ink outlet 144, and the ink flow limiting component 14 abuts against the bottom wall of the recess. The installation of the ink replenishing container is completed, and the ink enters the ink tank from the ink replenishing container along the ink replenishing inlet 94 to achieve the replenishment of the ink in the ink tank. When the ink replenishing container is installed on the ink tank, the setting of the contraction part allows the ink guide column to be guided by the contraction part and gradually cooperate with the ink outlet, which is convenient for installation and the ink guide column and the ink outlet cooperate more closely.

[0036] It is understandable that the structure of the ink replenishing part of the ink tank may be different from that shown in the figure. When the ink tank does not have an ink guide column, a hollow protrusion may be provided to connect to the ink replenishing inlet of the ink tank, or a hollow protrusion may be provided on the ink replenishing container to enlarge the ink outlet when the ink replenishing container is installed to the ink tank.

[0037] In this embodiment, the main containing part, the connecting part, the ink flow limiting part, and the ink outlet of the ink replenishing container are all located on the same central axis. It is understandable that in other embodiments, these parts may have different central axes. Preferably, when the ink replenishing container is installed in the ink tank, the central axis of the ink outlet is consistent with the central axis of the ink guide column, so that the ink outlet will be evenly expanded and closely fit the outer wall of the ink guide column, and the ink in the ink replenishing container will not leak. As an addition or supplement, a vent valve can be set at the bottom of the ink replenishing container. After the ink replenishing container is inverted, the vent valve is opened to further connect the ink replenishing container with the outside.

[0038] Example 2

[0039] Figure 8 The structure of the second embodiment of the utility model is shown. Except for the different sealing method of the ink flow limiting component, the structure of this embodiment is substantially the same as that of the first embodiment. Figure 8As shown, the ink replenishing container 20 has a container body consisting of a connecting component 22 and a main containing part 23. The main containing part is a bottle-shaped body with an open top and a closed bottom, and the internal space is used to contain ink. The connecting component 22 has a large diameter part and a small diameter part, wherein the large diameter part is detachably connected to the bottle mouth of the main containing part 23 through a thread, and an ink flow limiting component 24 made of a deformable material is installed and fixed on the opening of the small diameter part. The outer cover 21 is sleeved on the outside of the small diameter part of the connecting component 22, and a sealing member 25 is also provided between the connecting component 22 and the main containing part 23 to prevent ink from overflowing from the connection between the two. A sealing sheet 26 is provided on the outside of the through hole of the ink flow limiting component, and the size of the sealing sheet is set to at least cover the outside of the through hole, and can be pasted on the ink flow limiting component or directly set on the connecting component. The part of the through hole close to the inside of the container body forms an ink outlet, wherein the size of the ink outlet is set so that the ink will not flow out from the ink outlet under the action of surface tension. The sealing sheet is provided so that during the transportation of the ink replenishing container, the ink inside it will not leak from the ink outlet under the action of impact force.

[0040] When using the embodiment of the utility model to refill the ink tank with ink, first, the bottom of the ink refill container 20 is placed upright with the opening downward and upward, the outer cover 21 is opened and the sealing sheet 26 is peeled off, so that the ink outlet is opened, the outside is connected to the fluid of the ink refill container, and the ink refill container is balanced with the atmospheric pressure. Then, the ink refill container 20 is inverted so that its opening is downward. Due to the surface tension, the ink will not flow out from the ink outlet, and then the ink refill container 20 is installed in the ink refilling part 91 of the ink tank. When it is understood that there is no pressure in the ink refill container, that is, the pressure in the ink refill container is roughly balanced with the outside, the sealing sheet 26 can be left unpeeled, and when it is installed in the ink refilling part, it is broken by the ink guide column, and no ink splashing phenomenon occurs, wherein the sealing sheet 26 can be a sealing film or a thin paper sheet.

[0041] It can be understood that, in this embodiment, the ink replenishing container can also be set to other forms, and the ink flow limiting component can also be set to other forms of structure.

[0042] Example 3

[0043] Fig. 9 The structure of the third embodiment of the utility model is shown. Compared with the first and second embodiments, the improvement of the present embodiment is that a buffer component is added. Fig. 9As shown, the ink replenishing container 30 has a container body consisting of a connecting component 32 and a main container 33. The main container is a bottle-shaped body with an open top and a closed bottom, and the internal space is used to hold ink. The connecting component 32 has a large diameter part and a small diameter part, wherein the large diameter part is detachably connected to the bottle mouth of the main container 33 through a thread, and an ink flow limiting component 34 made of a deformable material is installed and fixed on the opening of the small diameter part. The outer cover 31 is sleeved on the outside of the small diameter part of the connecting component 32, and a sealing member 35 is also provided between the connecting component 32 and the main container 33 to prevent ink from overflowing from the connection between the two. A sealing sheet 36 is provided on the outside of the through hole of the ink flow limiting component, and the part of the through hole close to the inside of the container body forms an ink outlet, wherein the size of the ink outlet is set so that under the action of surface tension, ink will not flow out of the ink outlet.

[0044] The small diameter part and the large diameter part of the connecting part 32 are connected by forming a necking part, and the large and small diameter parts are connected through the shoulder of the necking part. The buffer part 37 is arranged in the large diameter part and abuts against the shoulder, and partially protrudes into the small diameter part. Fig.10 The structure of the buffer component is shown in FIG. Fig.10 As shown, the buffer component has a plurality of through holes 371 and an outer edge 372 inside, wherein the plurality of through holes 371 play a buffering role and allow the ink in the main container 33 to enter the connecting component 32 and the ink flow limiting component, and the outer edge 372 abuts against the shoulder of the connecting component 32 to fix the buffer component 37 to the necking portion of the connecting component. The sealing member 35 can be fixed together with the buffer component, or the outer edge 372 of the buffer component is formed as a sealing member between the connecting component 32 and the main container 33. The size of the through hole 371 is set so that ink can pass through the through hole 371 under the action of surface tension. In other embodiments, the buffer component can also be made of a porous material, and the ink can pass through the buffer component by capillary action. The provision of the buffer component can reduce the impact of the ink in the ink replenishing container on the ink outlet and prevent ink leakage.

[0045] When using the embodiment of the utility model to refill the ink tank with ink, first, the bottom of the ink refill container 30 is opened downward and placed upright, the outer cover 31 is opened and the sealing sheet 36 is peeled off, so that the ink outlet is opened, the outside is connected to the fluid of the ink refill container, and the ink refill container is balanced with the atmospheric pressure. Then, the ink refill container 30 is inverted so that its opening is downward. Due to the surface tension, the ink will not flow out from the ink outlet. When the ink flows downward from the main container, it is buffered by the buffer component 37, so that the ink outlet will not become larger due to the impact of the ink outlet by the excessive flow rate. Then, the ink refill container 30 is installed in the ink refilling part 91 of the ink tank. When it is known that there is no pressure in the ink refill container, the sealing sheet 36 can be left unpeeled, and it can be broken by the ink guide column when it is installed in the ink refilling part.

[0046] It can be understood that the bottle mouth of the main containing part in this embodiment is also configured to be necked down, and the buffer component can also be disposed in this necked down portion. The buffer component can also be disposed at a position inside the small diameter portion or the bottle mouth portion, as long as a fixing structure is provided to fix the buffer component at its position. In addition, the sealing sheet can also be omitted in this embodiment, the outer cover can also be configured to be a structure similar to that in Embodiment 1, the ink replenishing container can also be configured to be in other forms, and the ink flow limiting component can also be configured to be in other forms of structure.

[0047] Example 4

[0048] Fig.11 The structure of Example 4 of the utility model is shown. Compared with Example 1, Example 2 and Example 3, the improvement of this embodiment is that a reinforcement structure is added. Fig.11 As shown, the ink replenishing container 40 has a container body consisting of a connecting component 42 and a main container 43. The main container is a bottle-shaped body with an open top and a closed bottom, and a depression 433 protruding from the periphery to the axis is arranged in the middle, and the internal space is used to accommodate ink. The connecting component 42 has a large diameter part and a small diameter part, wherein the large diameter part is detachably connected to the bottle mouth of the main container 43 through a thread, and an ink flow limiting component 44 made of a deformable material is installed and fixed on the opening of the small diameter part. The outer cover 41 is sleeved on the outside of the small diameter part of the connecting component 42, and a sealing member 45 is also arranged between the connecting component 42 and the main container 43 to prevent ink from overflowing from the connection between the two. A sealing sheet 46 is arranged on the outside of the through hole of the ink flow limiting component, and the part of the through hole close to the inside of the container body forms an ink outlet, wherein the size of the ink outlet is set so that the ink will not flow out from the ink outlet under the action of surface tension. The small diameter part of the connecting component 42 and the large diameter part form a necking part, and the necking part is provided with a buffer component 47.

[0049] In this embodiment, the recesses are arranged in a plurality of circumferential directions. It is understandable that the recesses may also be arranged in a plurality of axial directions, or other types of reinforcing structures may be used, as long as the reinforcing effect is achieved and the main container is not easily compressed when the main container is held, causing excessive internal pressure and ink leakage. It is understandable that in this embodiment, a sealing sheet or a buffer component may not be provided, the outer cover may also be provided with a structure similar to that in Embodiment 1, the ink replenishing container may also be provided with other forms, and the ink flow limiting component may also be provided with other forms of structure.

[0050] Although the present invention is disclosed as above with preferred embodiments, it is not intended to limit the scope of the present invention. Any person skilled in the art can make some improvements without departing from the scope of the present invention, that is, any changes or improvements made according to the present invention should be covered by the protection scope of the present invention.

Claims

1. An ink refill container, used for refilling ink into an ink tank of an inkjet printing device, wherein the ink tank has an ink refill inlet, characterized in that: The ink replenishing container includes a container body for containing ink, the container body has an opening at the top, the container body is closed at the bottom, an ink flow limiting component is arranged at the opening, the ink flow limiting component is made of a deformable material, the ink flow limiting component has a through hole inside, and the through hole includes an ink outlet, the size of the ink outlet is set so that when the ink flow limiting component is in a natural state, the ink flow limiting component limits the ink from flowing out of the ink outlet, when the ink replenishing container is inverted and installed on the ink tank to replenish the ink tank with ink, the ink outlet is expanded, and ink flows from the ink replenishing container into the ink replenishing inlet.

2. The ink refill container according to claim 1, characterized in that: The ink replenishing container further includes an outer cover which is arranged outside the ink flow limiting component and is detachably connected to the container body.

3. The ink refill container according to claim 2, characterized in that: The ink replenishment inlet is arranged on the ink guide column. When the ink replenishment container is installed on the ink tank, the ink guide column penetrates into the ink outlet and expands it.

4. The ink refill container according to claim 3, characterized in that: Along the direction from the opening to the bottom of the container body, the ink flow limiting component is provided with a contraction portion contracting toward the central axis of the opening and the ink outlet is formed at the top of the contraction portion.

5. The ink refill container according to claim 4, characterized in that: A sealing sheet is provided on the ink flow limiting component at a position opposite to the ink outlet, and the sealing sheet is torn off before the ink replenishing container is installed on the ink tank or is broken during the process of installing the ink replenishing container on the ink tank.

6. The ink refill container according to claim 4, characterized in that: The outer cover has a protrusion that cooperates with the constriction to seal the ink outlet.

7. The ink refill container according to any one of claims 1 to 6, characterized in that: The container body is provided with a necked portion, the opening is provided at the top end of the necked portion, and a buffer component is provided in the container body against which a shoulder of the necked portion abuts.

8. The ink refill container according to claim 7, characterized in that: The buffer member is provided with a plurality of holes through which ink can pass.

9. The ink refill container according to any one of claims 1 to 5, characterized in that: The outer wall of the container body is provided with a recess protruding from the outer circumference to the inside.

10. The ink refill container according to claim 9, characterized in that: The depressions are evenly arranged in a plurality.

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