JP3166189U6 - Aspirator and ink cartridge filling device - Google Patents

Abstract

After inserting an ink cartridge waiting to be filled into an aspirator once, the air in the ink cartridge waiting to be filled and the ink vessel can be extracted several times through a push pool of internal moving parts. An aspirator and an ink cartridge filling device that do not require extraction are provided.
An aspirator (extractor) has an outer sleeve for storing air, an internal moving part attached to the outer sleeve, an extraction nozzle, and a piston to be combined with the outer sleeve on one side of the internal moving part. One end of the extraction nozzle is connected to the outer sleeve, and the other end is connected to a container waiting for extraction. An exhaust check valve is provided on the piston, and an inlet check valve is provided on the extraction nozzle.
[Selection] Figure 1

Description

  The present invention relates to an aspirator (suction device) used when an ink cartridge for an ink jet printer is filled with ink and an ink cartridge filling device.

  An ink jet printer records characters or figures by ejecting ink from a nozzle of a print head onto a recording medium such as paper based on a print signal. The volume of this ink jet printer has become smaller with the development of ink jet technology. For this reason, the volume of the ink cartridge corresponding to the ink container is reduced, and thus the user needs to frequently replace the ink cartridge.

  In addition, used ink cartridges are discarded. This discarded ink cartridge includes parts made of plastic, film, etc., and most of them do not decompose naturally, resulting in waste of resources and environmental pollution. Therefore, the most appropriate countermeasure is not to replace the ink cartridge but to refill the ink cartridge with ink for reuse. In response to such a demand, an ink filling device for filling an ink cartridge is provided in the market.

  Currently, an ink cartridge filling device that uses negative pressure to inject and fill ink into an ink cartridge is used. The ink cartridge filling device includes an ink vessel for storing filling ink, a bleed passage communicating with the ink vessel, and an aspirator for decompressing the ink vessel through the bleed passage. The aspirator includes an outer sleeve, an inner moving part, and an extraction nozzle. When ink is filled using the ink cartridge filling device, an ink cartridge waiting for filling is placed in the ink vessel. The extraction nozzle is connected to the extraction passage. Then, the moving part inside the aspirator is pulled by hand, it is moved upward in the outer sleeve, and the air in the ink vessel is extracted. This creates a vacuum between the ink cartridge and the ink vessel. As a result, when the hand is released, the moving parts inside move downward due to the pressure difference, and the ink in the ink vessel is sucked into the ink cartridge. This method is convenient, quick and easy for the user to operate.

  However, in the above-described method, a sealed space is formed between the ink vessel and the ink cartridge. Therefore, when the air in the ink vessel is extracted, the air in the entire sealed space is actually extracted. Therefore, if ink is injected into the ink cartridge many times, the ink amount of the ink vessel decreases (inversely, the air amount increases). Therefore, the user must inject ink into the ink cartridge, and the user must repeatedly insert and remove the aspirator to extract air in the sealed space as much as possible. Therefore, there are problems that the operation is frequent, the sealing performance is relatively poor, it is difficult to form a sufficient vacuum in the sealed space, and the amount of ink filled in the ink cartridge cannot be guaranteed.

  The cause of such a problem is that when an aspirator is used in combination with an ink vessel, only air can be extracted from the ink vessel, and a certain amount of air cannot be extracted by press-fitting air into the ink vessel. In other words, when filling many times, the amount of air present in the ink vessel and ink cartridge exceeds the amount of air that the aspirator can extract each time, so in order to introduce negative pressure into the ink vessel and ink cartridge, the aspirator must It must be inserted and removed several times. In other words, negative pressure is introduced into the ink vessel and the ink cartridge by repeating a series of operations such as extracting a predetermined amount of air in advance, then removing the cartridge from the filling device and exhausting it, and then inserting it into the filling device and bleeding. Obviously, the operation was frequent and caused great inconvenience to the user's use.

  Therefore, the present invention is intended to solve the problem that in the conventional aspirator, when the amount of air in the ink vessel and the ink cartridge exceeds the amount of air that the aspirator can extract each time, it must be inserted and extracted many times. .

In order to solve this problem, the present invention
An outer sleeve for storing air;
An internal moving part having a piston attached to the outer sleeve and combined with the outer sleeve at one end;
One end is connected to the outer sleeve, the other end has a bleed nozzle connected to a container waiting for extraction,
An aspirator is provided in which an exhaust check valve is provided on the piston, and an inlet check valve is provided in the extraction nozzle.

  In a preferred embodiment of the present invention, the exhaust check valve includes an air path passage and a seal part provided in the piston, and the seal part is fitted with a gap between the seal part and the outer sleeve.

  In a preferred embodiment of the present invention, the air passage is a groove having a trapezoidal cross section formed in the piston.

  In a preferred embodiment of the present invention, the air passage is a columnar hole provided on one side of the piston.

  In a preferred embodiment of the present invention, the exhaust check valve includes an umbrella-shaped plunger provided in the stone, a valve hole, and a through hole. The umbrella-shaped plunger includes a disk portion and a rod portion, and the rod portion includes the rod portion. Combined with through holes.

  In a preferred embodiment of the present invention, the inlet check valve includes a steel ball and a valve seat provided on the extraction nozzle, and the diameter of the steel ball is larger than the diameter of the extraction nozzle.

  In a preferred embodiment of the present invention, the inlet check valve includes an umbrella-shaped plunger, a valve hole and a valve seat provided in the extraction nozzle, the umbrella-shaped plunger includes a disk portion and a rod portion, and the rod portion includes Combined with the through hole.

  In a preferred embodiment of the present invention, a handle is provided at the other end of the internal moving part.

  In a preferred mode of the present invention, the piston includes a piston ring and a piston frame, and the piston ring and the piston frame are fitted into a gap between the outer sleeves.

An ink cartridge filling device according to the present invention includes:
An ink vessel for storing ink; and
An ink injection path for sending ink to an ink cartridge waiting to be filled;
An extraction passage connected to the ink vessel;
The aspirator according to any one of claims 1 to 9 is connected to the extraction passage and continuously extracts air in the ink vessel and the ink cartridge.

  According to the present invention, after the ink cartridge waiting for filling is inserted into the aspirator once, the air in the ink cartridge waiting for filling and the ink vessel can be extracted several times through the push pool of the internal moving parts. There is no need to pull out the aspirator.

FIG. 1 is an exploded perspective view of an aspirator according to a first embodiment of the present invention. FIG. 2a is a cross-sectional view of an embodiment of an aspirator according to the present invention. FIG. 2B is a partially enlarged view of the exhaust check valve A portion when the aspirator according to the present invention is not used. FIG. 2c is a partially enlarged view of the inlet check valve C portion when the aspirator according to the present invention is not used. FIG. 3a is a cross-sectional view of the aspirator according to the present invention during bleed. FIG. 3B is a partially enlarged view of the inlet check valve D portion in the aspirator shown in FIG. 3A. FIG. 4A is a cross-sectional view of the aspirator according to the present invention during exhaust. FIG. 4B is a partially enlarged view of the exhaust check valve B portion during exhaust. FIG. 5a is a partial cross-sectional view of an aspirator (at the time of extraction) according to a second embodiment of the present invention. FIG. 5b is a partial cross-sectional view of an aspirator (during exhaust) according to a second embodiment of the present invention. FIG. 6 is an exploded perspective view of an aspirator according to a third embodiment of the present invention. FIG. 7A is a cross-sectional view showing a state in which the aspirator according to the present invention is assembled to the ink cartridge filling device of the present invention. FIG. 7 b is a cross-sectional view of the ink cartridge filling device with the aspirator removed.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is an exploded schematic view of an aspirator 1 according to this embodiment. As shown in FIG. 1, the aspirator 1 has an outer sleeve 2 and an inner moving part 3. The outer sleeve 2 is a hollow cylindrical sleeve, and an internal space is used for air storage, and an opening is opened at one end (open end) 21 thereof. The internal moving part 3 is inserted into the outer sleeve 2 from the opening end 21 of the outer sleeve 2 and can reciprocate up and down with respect to the outer sleeve 2 to alternately perform bleed and exhaust. The internal moving part 3 has a piston 31 which is combined with the inner wall of the outer sleeve 2 at one end thereof. The internal moving component 3 also realizes the bleed or exhaust operation of the aspirator 1 by moving the piston 31 up and down in the outer sleeve 2. A handle 32 is provided at the other end of the internal moving component 2 so that the user can move the piston 31. The bleed nozzle 4 communicates the inside and the outside of the outer sleeve 2, and is used to extract air from the bleed container (ink cartridge) when the aspirator 1 is used. For this purpose, the bleed nozzle 4 communicates with the outer sleeve 2. And an extraction end 41 connected to the extraction container. The shield case 13 is engaged with the outer sleeve 2 or connected by a spiral structure, and accommodates the extraction nozzle 4, and protects the extraction nozzle 4 when the aspirator 1 is not used to prevent damage.

  As shown in FIG. 1, the piston 31 can be molded integrally with the internal moving component 3. The piston 31 can be assembled after being manufactured separately from the internal moving component 3. In any case, the piston 31 is combined with no gap between the piston 31 and the inner wall of the outer sleeve 2 to ensure that the piston 31 moves along the inner wall of the outer sleeve 2. In this embodiment, as shown in FIGS. 2 a and 2 b, the piston 31 includes a piston ring 311 and a piston frame 312. The piston ring 311 is engaged with the internal moving component 3, and the piston frame 312 is combined with the piston ring 311. As shown in FIG. 2b, the piston ring 311 has a hole 313 extending therethrough. The piston frame 312 supports the exhaust check valve 5 so that the exhaust check valve 5 is opened only when the aspirator 1 performs an exhaust operation, and air is discharged to the atmosphere through the exhaust check valve 5 and the hole 313. . In this embodiment, the exhaust check valve 5 includes an air path passage provided in the piston frame 312 and an O-ring disposed between the piston frame and the piston ring. In the present embodiment, the air path passage is a groove 51 having a trapezoidal cross section, and includes an upper edge having a small diameter (the upper edge in the figure) and a lower edge having a large diameter (the lower edge in the figure), The trapezoidal groove 51 has a lower edge in communication with the inside of the outer sleeve 2 and an upper edge in communication with the outside air. Also, as can be seen from FIG. 2b, the O-ring 52 is made of an elastic material, and the outer diameter is slightly larger than the inner diameter of the outer sleeve and the inner diameter is smaller than the larger diameter of the trapezoidal groove but larger than the smaller diameter of the trapezoidal groove. The gap between the inner wall of the sleeve and the lower edge of the trapezoidal groove is closed, and a sufficient seal is formed between the outer sleeve and the inner moving part.

  As shown in FIG. 2a, when the aspirator 1 is not used, the O-ring 52 is located at the lower edge of the trapezoidal groove 51, and the inside of the outer sleeve 2 is shielded from the outside air (see FIG. 2b). As shown in FIG. 3a, when bleed using the aspirator 1, when the internal moving component 3 moves along the direction indicated by the arrow E, the O-ring 52 causes a downward frictional force due to contact with the inner wall of the outer sleeve 2. And stays at the lower edge of the trapezoidal groove 51. Therefore, the inside of the outer sleeve 2 is shielded from the outside air, and the air in the outer sleeve 2 cannot be discharged to the outside. As shown in FIG. 4 a, when exhausting from the aspirator 1, the internal moving component 3 is moved along the direction indicated by the arrow F. At this time, the O-ring 52 receives an upward frictional force due to contact with the inner wall of the outer sleeve 2, and moves away from the lower edge position of the trapezoidal groove 51 to the vicinity of the upper edge of the trapezoidal groove 51. As a result, as shown in FIG. 4b, the inside of the outer sleeve 2 communicates with the outside air, and the air stored in the outer sleeve 2 in the extraction stage is discharged outside through the hole 313 along the arrow shown in FIG. 4b. Is done.

  As shown in FIG. 2 a, the aspirator 1 is provided with one inlet check valve 6 at the inlet end 42 of the extraction nozzle 4, and the extraction nozzle 4 is opened only when the aspirator 1 is extracting. In this embodiment, the inlet check valve 6 is a single ball valve, and includes a steel ball 61 and a valve seat 62, and the diameter of the steel ball 61 is slightly larger than the diameter of the inlet end 42. When the aspirator 1 is not used, as shown in FIG. 2 c, the steel ball 61 closes the inlet end 42 of the extraction nozzle 4 by its own weight, and prevents air from entering the outer sleeve 2. As shown in FIG. 3a, when the aspirator 1 is used for extraction, the user grasps the handle 32, pulls out the piston 31, and moves upward along the inner wall of the outer sleeve 2 in the direction indicated by the arrow E. Thereby, as described above, the inside of the outer sleeve 2 is blocked from the outside air, and a constant vacuum is formed in the outer sleeve 2. Then, a pressure difference is generated between the bleed-out waiting container (described later), the air in the container moves toward the inside of the outer sleeve 2 based on the pressure difference, pushes up the steel ball 61, and the outer sleeve. Air is sucked into 2. This state is shown in FIG. 3b. As shown in FIG. 4 a, when the aspirator 1 is used for exhaust, the user grasps the handle 32, pulls out the piston 31, and moves downward along the inner wall of the outer sleeve 2 in the direction indicated by the arrow F. Thereby, as described above, the inside of the outer sleeve 2 communicates with the outside air, and the air inside the outer sleeve 2 is discharged to the outside. Further, since the pressure inside the outer sleeve 2 is larger than the pressure in the container waiting for extraction, the steel ball 61 closes the inlet end 42 of the extraction nozzle 4 and prevents the air in the container waiting for extraction from entering.

  As described above, the aspirator 1 includes the exhaust check valve 5 and the inlet check valve 6. When the aspirator 1 performs the bleed operation, the inlet check valve 6 is opened and the exhaust check valve 5 is kept closed. The extracted air is stored in the outer sleeve 2. When the aspirator 1 performs an exhaust operation, the inlet check valve 6 is closed, the exhaust check valve 5 is opened, and the air stored in the outer sleeve 2 is discharged. The user can form a sufficient vacuum in the container waiting for extraction by repeating the above-described extraction / pushing operation several times.

  FIG. 7 a is a diagram illustrating a state in which the aspirator 1 is used in combination with the ink cartridge filling device 7. As shown in FIG. 7 a, the ink cartridge filling device 7 includes an ink vessel 8, an ink injection passage 9, an extraction passage 10, and a positioning component 11. The ink vessel 8 stores ink to be filled in the ink cartridge 14 that is waiting to be filled. The ink injection passage 9 is in the ink vessel 8, is connected to the ink cartridge 14 waiting for filling, and is used to inject the ink in the ink vessel 8 into the ink cartridge 14 waiting for filling. When the filling device 7 is not used, one end of the ink injection passage 9 connected to the ink cartridge 14 is sealed with a normal rubber plug. The extraction passage 10 is directly connected to the ink vessel 8 and is used to extract air in the ink vessel 8 and the ink cartridge 14 to form a negative pressure in the ink vessel 8 and the ink cartridge 14. An extraction port 101 connected to the aspirator 1 is provided in the extraction passage 10. The aspirator 1 is connected to the extraction passage 10 and extracts air in the ink vessel 8 and the ink cartridge 14. The positioning component 11 is used to fix the ink cartridge 14 and holds the cartridge 14 in an appropriate position with respect to the filling device 7. The ink filling device 7 has a connector pipe 12 that can be attached to and detached from the ink filling device 7. One end of the connector pipe 12 is inserted into the extraction port 101, and the other end is combined with the extraction nozzle 4 of the aspirator 1. In this embodiment, the extraction port 101 is sealed with a self-close seal 102. The self-closing seal 102 is made of silica gel, has good elasticity, and has a self-closing gap penetrating itself in the center. The self-closing gap (self-closing sewing) is normally in a closed state, and is opened when the connector pipe 12 is inserted.

The ink cartridge filling device 7 is preferably formed of a transparent material so that the user can visually check the filling state of the ink cartridge. Hereinafter, the use of the aspirator 1 and the ink cartridge filling device 7 will be described with reference to FIGS. 1 to 4, 7 a and 7 b.
(1) Place the ink cartridge filling device 7 on one plane (not shown), pull out the seal part of the ink injection passage 9, install the ink cartridge 14 that has run out of ink into the positioning component 11, and fix it to the ink cartridge filling device 7. To do. At this time, the ink outlet of the ink cartridge 14 is connected to the ink injection passage 9.
(2) The connector pipe 12 is inserted into the extraction port 101, and the aspirator 1 with the shield case 13 removed is connected to the connector pipe 12. Thereby, the extraction nozzle 4 is connected to the extraction passage 10. The states of the inlet check valve 6 and the exhaust check valve 5 of the aspirator 1 are shown in FIGS. 2b and 2c.
(3) Pull the internal moving part 3 of the aspirator 1 to extract the air in the ink cartridge filling device 7. At this time, the inlet check valve 6 is opened, and the exhaust check valve 5 is kept closed and the air is stored in the outer sleeve 2 as shown in FIG. Next, the internal moving part 3 is pushed down. As a result, the exhaust check valve 5 is opened, the air in the outer sleeve 2 is discharged, and the inlet check valve 6 is closed, as shown in FIG. 4b. The above-described extraction / exhaust operation is repeated several times until a feeling that the internal moving component 3 is difficult to pull upward is obtained.
(4) Remove the aspirator 1 and attach the shield case 13. At this time, since the ink vessel 8 is directly connected to the outside air through the connector pipe 12 and the ink vessel 8 and the ink cartridge 14 are in a vacuum, the ink flows from the ink vessel 8 to the ink cartridge 14 by the action of the pressure difference.
(5) When the down stop of the ink in the ink vessel 8 is seen, it indicates that the ink in the ink cartridge 14 has been filled to the full, the ink cartridge 14 and the connector pipe 12 are removed, and the ink injection passage with the original seal parts 9 is sealed.

  As can be seen from the above description of the use of the ink cartridge filling device 7, the aspirator 1 according to the present invention replaces the bleed and air push functions of the conventional aspirator with the bleed and exhaust functions. When extracting the amount of air whose storage volume is larger than itself, the air can be extracted continuously by inserting / extracting only once, the process of forming negative pressure of the ink cartridge filling device 7 becomes simple, and ink filling The sealing property of the device 7 can be ensured.

  As can be seen from the above description, by adopting the structure of the aspirator 1 described above, the operation of extracting the negative pressure is simplified, the sealing performance of the aspirator is improved, and the user's time cost is sufficiently saved. Can do.

  The connector pipe 12 can be removed from the ink cartridge filling device 7. In this case, a normal rubber plug seal is employed for the extraction port 101, and the extraction passage 10 is normally closed. When the ink cartridge filling device 7 is used, the rubber plug is pulled out, and the extraction nozzle 4 of the aspirator 1 is directly connected to the extraction port 101 to extract the air in the ink vessel 8.

  As shown in FIGS. 5a and 5b, the exhaust check valve 500 may be a single umbrella valve. This umbrella-shaped valve includes umbrella-shaped plungers 5001 and 5002, a valve hole 5003, and a through hole 5004. The umbrella-shaped plunger is made of an elastic material such as silica gel and includes a disk portion 5001 and a rod portion 5002. The valve hole 5003 and the through hole 5004 are formed in the piston frame 312, and the valve hole 5003 is disposed around the through hole 5004. As shown in FIG. 5a, when the exhaust check valve 500 is in a closed state, the disk portion 5001 covers the valve hole 5003, the rod portion 5002 is in the through hole 5004, and the outer sleeve 2 is shielded from the outside air. As shown in FIG. 5b, when the exhaust check valve 500 is in the open state, the disk portion 5001 opens the valve hole 5003, the outer sleeve 2 communicates with the outside air, and the air can be discharged.

  In this embodiment, the piston ring 312 may be provided with a hole 3130 and used to discharge the air discharged from the umbrella-shaped valve to the outside air.

  Specifically, when the aspirator 1 is bleed, the pressure in the outer sleeve 2 is smaller than the pressure of the outside air, so that the disk portion 5001 keeps the state of covering the valve hole 5003. When the aspirator 1 is evacuated, the storage space of the outer sleeve 2 is reduced. Therefore, according to the ideal gas equation, when the pressure in the outer sleeve 2 is increased at this time, and the pressure is higher than the pressure of the outside air, the disk portion 5001 is The valve hole 5003 is opened by being pushed up and deformed or removed from the original position. At this time, air is discharged from the outer sleeve 2 and flows out from the hole 3130 through the valve hole 5003 to the outside air.

  When the pressure of the outer sleeve 2 is smaller than the outside air when the umbrella plunger is exhausted, the rod 5002 is not returned to its original position, and a projection having a diameter larger than the through hole 5004 is provided on the rod portion 5002, and the umbrella plunger has a through hole 5004. The movement distance with respect to is limited, and the above-described situation is prevented.

  Since the aspirator 1, the ink cartridge filling device 7, and other structures and usage principles are similar to those of the first embodiment, description thereof is omitted.

  As shown in FIG. 6, the piston 301 in the aspirator 1 can also be molded integrally with the internal moving component 30, and the structure is simple. In addition, in the embodiment, the air path passage of the exhaust check valve 50 is provided in the columnar hole 501 on one side of the piston 301. As can be seen from the above figure, the lower end of the columnar hole 501 is connected to the outer sleeve 2 and the upper end is connected to the outside air. That is, the columnar hole 501 functions to connect the outer sleeve 2 to the outside air. The piston 301 is provided with an O-ring 502.

  Specifically, when the aspirator 1 has the above-described structure, during extraction, the O-ring 502 receives a downward frictional force and is below the columnar hole 501, and the outer sleeve 2 is blocked from the outside air. However, during exhaust, the O-ring 502 receives the upward frictional force and is above the columnar hole 501, and the outer sleeve 2 is connected to the outside air so that air can be discharged. Since the aspirator 1, the ink cartridge filling device 7, and other structures and usage principles are similar to those of the first embodiment, description thereof is omitted here.

  It should be understood that those skilled in the art can use the structure of the umbrella-shaped valve for the inlet check valve, and control the air entry by opening and closing by the pressure difference between the ink vessel and the outer sleeve.

  The above description relates to a preferred embodiment of the present invention. Accordingly, those skilled in the art can make some modifications and improvements without departing from the technical scope of the present invention. For example, it is possible to change the columnar hole to a groove provided on one side of the piston. All improvements are within the technical scope of the present invention.

1: Aspirator, 2: Outer sleeve, 21: Opening side, 3, 30: Internal moving parts, 31, 301: Piston, 311: Piston ring, 312: Piston frame, 313, 3130: Hole, 32: Handle, 4: Extraction nozzle, 41: end portion, 5, 50, 500: exhaust check valve, 51: trapezoidal groove, 52: O-ring, 501: columnar hole, 502: O-ring, 5001: disc portion, 5002: rod portion, 5003: Valve hole, 5004: Through hole, 6, 60: Inlet check valve, 61: Steel ball, 62: Valve seat, 601: Disc part, 602: Rod part, 603: Valve hole, 604: Through hole, 7: Ink cartridge Filling device, 8: ink vessel, 9: ink injection passage, 10: extraction passage, 101: extraction port, 102: seal Grayed, 11: positioning component, 12: connector pipe, 13: shield case 14: Filling waiting ink cartridge.

Claims (10)

An outer sleeve for storing air;
An internal moving part having a piston attached to the outer sleeve and combined with the outer sleeve at one end;
One end is connected to the outer sleeve, the other end has a bleed nozzle connected to a container waiting for extraction,
An aspirator, wherein an exhaust check valve is provided on the piston, and an inlet check valve is provided in the extraction nozzle.   The aspirator according to claim 1, wherein the exhaust check valve includes an air path passage provided in the piston and a seal part, and the seal part is fitted with a gap between the exhaust check valve and the outer sleeve.   The aspirator according to claim 1 or 2, wherein the air passage is a trapezoidal cross section formed in the piston.   The aspirator according to claim 1, wherein the air passage is a columnar hole provided on one side of the piston.   The exhaust check valve includes an umbrella-shaped plunger provided in the stone, a valve hole, and a through hole, and the umbrella plunger includes a disk portion and a rod portion, and the rod portion is combined with the through hole. Item 5. The aspirator according to any one of Items 1 to 4.   The aspirator according to claim 1, wherein the inlet check valve includes a steel ball and a valve seat provided on the extraction nozzle, and the diameter of the steel ball is larger than the diameter of the extraction nozzle.   The inlet check valve comprises an umbrella-shaped plunger, a valve hole and a valve seat provided in the extraction nozzle, the umbrella-shaped plunger comprises a disk portion and a rod portion, and the rod portion is combined with the through hole; The aspirator according to claim 1.   The aspirator according to claim 1, wherein a handle is provided at the other end of the internal moving component.   The aspirator according to claim 1, wherein the piston includes a piston ring and a piston frame, and the piston ring and the piston frame are fitted between the outer sleeves. An ink vessel for storing ink; and
An ink injection path for sending ink to an ink cartridge waiting to be filled;
An extraction passage connected to the ink vessel;
An ink cartridge filling device, wherein the aspirator according to claim 1 is connected to the extraction passage and continuously extracts air in the ink vessel and the ink cartridge.

Images