JP2004148705A - Ink-package package body and manufacturing method therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ink-package package body which can suppress deterioration in the degree of deaeration of ink and can prevent deformation of an ink package, damage to the ink package, etc. <P>SOLUTION: The ink package 2, in which the ink is hermetically sealed, is contained in a package 4 which is filled with an inert gas whose solubility in the ink is lower than that of air. Thus, the quantity of the gas, which permeates through the ink package 2 so as to be dissolved in the ink, can be made smaller than that of the air. Accordingly, since the inside of the package 4 does not have to be brought into a highly decompressed state as before even in the case of being brought into a decompressed state, the ink package 2 is prevented from being deformed by a difference between atmospheric pressure and pressure in the package 4; and when the inside of the package 4 is brought into pressure which is almost as high as positive pressure or the atmospheric pressure, the deterioration of the degree of the deaeration of the ink can be suppressed. Even if an impact is applied to the ink-package assembly 1, an impact force can be absorbed by the gas which is infilled into the package 4, and the deformation etc. of the ink package 2 can be prevented. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a package for an ink package and a method for manufacturing the same, and more particularly to a package for an ink package that can suppress deterioration of the degree of deaeration of ink.
[0002]
[Prior art]
As disclosed in Japanese Patent Application Laid-Open No. H11-129489, there is known an ink bag configured to hermetically seal ink used in an ink jet recording apparatus. A cylindrical member is fixed to the periphery of the opening of the ink bag, and an elastic sealing material that blocks communication between the outside and the inside of the ink bag body is inserted into the cylindrical member. The ink bag is mounted on the ink jet recording apparatus while being housed inside the cartridge case while fixing the cylindrical member so as to be exposed from the side surface of the cartridge case. When the cartridge case is mounted, the elastic sealing material inserted into the tubular member is pierced by the ink supply needle on the ink jet recording apparatus side. The ink sealed in the ink bag is supplied to a recording head that discharges the ink to a recording medium via a tube connected to the ink supply needle.
[0003]
Here, the ink used in this ink jet recording apparatus is manufactured by a process of dissolving raw materials and a filtration process. However, if the manufactured ink is used as it is in an ink bag, the nitrogen dissolved in the ink may be used. In addition, various gases such as oxygen, carbon dioxide, and the like enter the print head and generate bubbles, which makes it impossible to discharge ink droplets from the print head and causes printing defects. Therefore, before filling the ink into the ink bag, a degassing process for reducing the dissolved gas in the ink is performed. As a method of the deaeration treatment, a method of stirring the ink while reducing the pressure in a pressure vessel, a method of deaeration by a deaerator using a gas separation membrane, and the like are adopted.
[0004]
However, when the degassed degassed ink is sealed in the ink bag and the ink bag is transported or stored for a long period of time without being used, oxygen in the air and the like in the ink again reappears in the ink bag. Will be dissolved. In order to prevent oxygen and the like in the air from dissolving in the ink again, Japanese Patent Publication No. Hei 3-61592 discloses that a bag filled with degassed ink is stored in an ink container. By storing and sealing the ink container in a sealed container such as a plastic or rubber container or a can-shaped metal container in a vacuum chamber, there is a technology for transporting and storing the ink container under reduced pressure lower than atmospheric pressure. It has been disclosed.
[0005]
[Patent Document 1]
JP-A-11-129489 (FIG. 1 and the like)
[Patent Document 2]
Japanese Patent Publication No. Hei 3-61592 (4th column, 4th to 7th lines, FIG. 1, etc.)
[0006]
[Problems to be solved by the invention]
As described above, the ink used in the ink jet recording apparatus needs to maintain a high degree of degassing in order to prevent printing defects. On the other hand, although the technique described in Japanese Patent Publication No. 3-61592 can maintain a high degree of deaeration of ink, for example, in the case of a small ink container mounted on a carriage, Even if the ink container is formed of plastic, since the surfaces constituting the housing are relatively small, when the ink container is housed in an airtight container and put in a decompressed state, the housing is slightly collapsed by the decompression. Not as good. However, when the capacity of the ink container is increased or the housing is made flat, the surface constituting the housing becomes large and deformed due to decompression, so that the ink container cannot be mounted on the recording apparatus main body, or the ink cannot be installed. There is a problem that ink leaks from the container.
[0007]
The present invention has been made in order to solve this problem, and in particular, it is possible to suppress the deterioration of the degree of deaeration of the ink and to prevent the ink package from being deformed or damaged. It is intended to provide the body.
[0008]
[Means for Solving the Problems]
In order to achieve this object, a package of an ink package according to claim 1 includes an ink package that seals ink inside, and a wrapper that encloses the ink package. And an inert gas having a lower solubility in ink than air.
[0009]
According to the package of the ink package according to the first aspect, the ink package in which the ink is sealed is contained in the package filled with an inert gas whose solubility in the ink is smaller than that of the air. Is maintained for a long time.
[0010]
According to a second aspect of the present invention, there is provided the ink package package according to the first aspect, wherein the inert gas is made of helium.
[0011]
The package of the ink package according to the third aspect is the package of the ink package according to the first or second aspect, wherein the ink package has a flexible bag and an inner surface of a peripheral portion of the bag. A spout having an outer peripheral surface fixed thereto and having a communication path communicating the inside and the outside of the bag body, and a cap press-fitted into the communication path of the spout; and the spout is provided inside the bag body. The ink is filled to a position where the ink does not reach the communication path of the spout, and the communication path of the spout is filled with the inert gas, or the pressure is reduced from the atmospheric pressure.
[0012]
According to the ink package package according to the third aspect, the ink package acts in the same manner as the ink package package according to the first or second aspect, and the ink sealed inside the ink package has flexibility. The bag is filled inside, and is sealed inside the bag by a cap pressed into a communication passage of a spout having an outer peripheral surface fixed to an inner surface of a peripheral portion of the bag. Here, the ink filled in the bag is filled to a position where it does not reach the communication path of the spout. In addition, the communication path of the spout is filled with an inert gas, or is set at a pressure lower than the atmospheric pressure.
[0013]
A method of manufacturing a package of an ink package according to claim 4, wherein the method of manufacturing the package of the ink package according to claim 3, wherein the ink is provided inside the bag body to a position that does not reach the communication path of the spout. An ink filling step of filling the spout, after the ink filling step, a pressure reducing step of reducing the pressure in the communication path of the spout, and after the pressure reducing step, the ink package in which the cap is press-fitted into the communication path is the wrapper. A gas filling step of filling the inert gas into the inside of the wrapping bag in a state of being enclosed in the inside of the bag.
[0014]
According to the method of manufacturing a package of an ink package according to the fourth aspect, the ink is filled in the bag body to a position where the ink does not reach the communication path of the spout in the ink filling step. Thereafter, the communication path of the spout is reduced in pressure by the pressure reducing step. Then, in the gas filling step, the inside of the wrapper is filled with an inert gas in a state where the ink package whose cap is press-fitted into the communication path is contained inside the wrapper.
[0015]
A method of manufacturing a package of an ink package according to claim 5, wherein the ink is packaged inside the bag until the ink does not reach the communication path of the spout. And filling the ink package before the cap is press-fitted into the communication path, after the ink filling step, in the communication path of the spout and the packaging A decompression step of decompressing the inside, and after the decompression step, before press-fitting the cap into the communication path and before sealing the zipper, inside the communication path of the spout and the zipper. A gas filling step of filling the inert gas.
[0016]
According to the method of manufacturing a package of an ink package according to the fifth aspect, the inside of the bag is filled with ink to a position that does not reach the communication path of the spout in the ink filling step. Thereafter, in the decompression step, the pressure in the spout communication path and the inside of the wrapper is reduced in a state in which the ink package before the cap is press-fitted into the communication path is included in the inside of the wrapper. Then, before press-fitting the cap into the communication passage and before closing the wrapper, the interior of the communication passage and the wrapper of the spout are filled with an inert gas by a gas filling step.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1A is a perspective view of a package 1 of an ink package according to an embodiment of the present invention, and FIG. 1B is a cross-sectional view of the package 1 of the ink package taken along the line II in FIG. . FIG. 2 is a perspective view illustrating a bag body and a storage case of the ink package. FIG. 3A is a front view of a bag body of the ink package, and FIG. 3B is a sectional view taken along line III-III in FIG.
[0018]
The package 1 of the ink package includes an ink package 2 that seals the degassed ink that has been degassed as described above, and a wrapper 4 that contains the ink package 2. Filled with gas.
[0019]
The ink package 2 includes a bag 5 for storing ink and a storage case 12, and as shown in FIG. 3, the bag 5 has a laminated structure formed by laminating a plurality of film sheets. The sheet material is formed into a bag shape by welding the peripheral edges so as to leave an opening in a part, and the inside thereof is filled with deaerated ink. A spout 7 having a communication path 6 for communicating the inside and the outside of the bag 5 is welded and fixed to the opening 5a of the bag 5 by welding the outer peripheral surface to the inner surface of the opening 5a. A cap 8 for press-fitting between the inside and the outside of the bag body 5 is press-fitted into the communication path 6 of 7.
[0020]
The sheet material constituting the bag body 5 is, for example, an adhesive layer and a nylon layer (outer surface layer) on one side, and an adhesive layer, a polyethylene terephthalate layer, an adhesive layer, and a polypropylene layer ( (Inner layers) are sequentially laminated. By using a sheet material having such a laminated structure, durability is excellent. In particular, by arranging a polypropylene layer on the inner surface layer, ink resistance to ink filled inside the bag body 5 is excellent, and By arranging the aluminum alloy layer as the intermediate layer, it is possible to prevent a new gas from passing through the bag body 5 and prevent the degree of degassing of the ink from being deteriorated.
[0021]
The spout 7 welded to the opening 5a of the bag body 5 is formed in a cylindrical shape, and is made of a material mainly composed of polypropylene having excellent ink resistance. That is, since the main component is the same as the polypropylene layer constituting the inner layer of the bag 5, the plurality of ribs 7 a formed on the outer peripheral surface of the spout 7 can be firmly welded to the inner surface of the bag 5. . Therefore, it is possible to suppress the intrusion of new gas from the welded portion between the bag 5 and the spout 7 and to prevent the degree of degassing of the ink from being deteriorated. A storage section 21 is formed at an intermediate portion at a predetermined distance from both ends of the communication path 6 penetrating the spout 7 and has a larger inner diameter than the communication paths 18 and 19 at both ends of the communication path 6 and stores the cap 8. Is formed.
[0022]
The cap 8 is made of, for example, butyl rubber or a material similar thereto, and has an elastic restoring force for closing the ink even when the ink extraction needle 17 described later is pierced. The cap 8 is press-fitted into a storage section 21 formed in the communication path 6. Therefore, even when the ink extraction needle 17 pierces the cap 8, the cap 8 can be prevented from moving to the inside of the bag body 5 by the communication path 18 which is one end of the communication path 6. Conversely, when pulling out the ink extraction needle 17 from the cap 8, the cap 8 can be prevented from moving to the outside of the bag body 5 by the communication path 19 which is one end of the communication path 6.
[0023]
As shown in FIG. 2, the storage case 12 configured to store the bag body 5 configured as described above overlaps a pair of case bodies formed in a box shape from both sides of the wide surface of the bag body 5, It is configured such that the bag body 5 can be stored therein. The pair of case bodies are substantially similar to each other, and include a bottom wall 9 that supports the wide surface of the bag body 5, a side wall 10 erected from an edge of the bottom wall 9, and an edge of the side wall 10. And an opening 11 formed by the above.
[0024]
The bottom wall 9 is configured to have substantially the same size as the wide surface of the bag body 5. A cutout 10a for fixing the spout 7 is provided in a part of the side wall 10. The spout 7 fits into the notch 10 a, and the cap 8 press-fitted into the communication path 6 of the spout 7 is exposed from the side wall 10 of the storage case 12. The storage case 12 is contained in the wrapper 4 with the bag 5 stored therein.
[0025]
The wrapper 4 for storing the ink package 2 is formed by stacking two sheets of sheet material having the same laminated structure that does not allow air to pass through, similar to the bag body 5, and heat-welding the peripheral portions thereof. Therefore, it is possible to suppress that new air penetrates the wrapping bag 4 and enters the inside of the wrapping bag 4 and further penetrates the bag body 5 and dissolves in the ink, thereby deteriorating the degree of deaeration of the ink. Can be.
[0026]
Helium gas is filled in the inside of the wrapper 4 containing the ink package 2. The helium gas is also filled in the storage case 12 from the gap between the pair of case bodies constituting the storage case. Therefore, even if the helium gas permeates the ink package 2, the solubility of the helium gas in the ink is smaller than that of the air. Therefore, the amount of helium dissolved in the ink sealed in the ink package 2 is smaller than that of the air. Can be suppressed from deteriorating. The inside of the wrapper 4 filled with helium gas can be in any of a reduced pressure state, a positive pressure state, and a state similar to the atmospheric pressure. In the case of a reduced pressure state, a pressure (for example, from −20 kPa to −600 kPa or more, preferably −40 kPa or more) at which the packaging bag 4 comes into close contact with the storage case 12 due to the atmospheric pressure outside the packaging case 4 but does not deform the storage case 12. I do. In the case of the positive pressure state, the wrapper 4 is inflated by helium gas. In the case where the pressure is approximately the same as the positive pressure or the atmospheric pressure, even if the package 1 of the ink package is dropped when being transported or the pressure is applied to the package 1 of the ink package, the impact force is applied to the inside of the wrapper 4. The storage case 12 can be prevented from being damaged by the absorption of helium filled in the storage case 12.
[0027]
It should be noted that the gas filling the inside of the wrapper 4 is not limited to helium gas, and a rare gas such as neon gas can also be used as long as it is an inert gas whose solubility in ink is smaller than that of air.
[0028]
Next, a method of manufacturing the above-described ink package 1 will be described with reference to FIG. FIG. 4 is a diagram for explaining a method of manufacturing the package 1 of the ink package. First, the inside of the bag 5 stored in the storage case 12 is filled with ink via the communication path 6 of the spout 7. At this time, the ink is filled into the bag 5 to a position where the ink does not reach the communication path 6 of the spout 7. Therefore, when the ink adheres to the communication path 6 of the spout 7 and the cap 8 is press-fitted, it is possible to prevent the ink adhered to the communication path 6 from deteriorating the adhesion between the cap 8 and the communication path 6. it can. On the other hand, since the inside of the bag 5 is filled only up to a position where the ink does not reach the communication path 6 of the spout 7, a space 22 is formed inside the bag 5.
[0029]
Next, the ink package 2 filled with ink as described above is housed in the wrapper 4 before the cap 8 is pressed into the communication path 6 of the spout 7. The envelope 4 containing the ink package 2 is put into the vacuum chamber 21 without being sealed, and the space 22 formed inside the envelope 5 and the interior of the envelope 4 are decompressed. .
[0030]
As described above, after the space 22 formed inside the bag 5 and the inside of the wrapper 4 are decompressed, the inside of the vacuum chamber 21 is filled with helium gas to form the inside of the bag 5. The space 22 and the inside of the wrapper 4 are filled with helium gas. At this time, the pressure state in the wrapper 4 can be determined by the amount of the helium gas. Thereafter, in the vacuum chamber 21, the cap 8 is press-fitted into the communication path 6 of the spout 7, and the opening of the wrapper 4 is sealed by heat welding to manufacture the ink package 1 of the package.
[0031]
According to the package 1 of the ink package thus manufactured, even if the helium gas filled in the wrapper 4 passes through the bag 5 and the spout 7, the solubility of the helium gas in the ink is air. Therefore, the amount of helium gas dissolved in the ink sealed in the bag body 5 is smaller than that in the air, and the deterioration of the degree of degassing of the ink can be suppressed. Furthermore, even when the ink is filled only up to a position where the ink does not reach the communication path 6 of the spout 7, the space inside the bag 5 is sealed with the bag 5 because it is filled with helium gas. The amount of helium gas dissolved in the ink is smaller than that in the air, and the deterioration of the degree of degassing of the ink can be further suppressed.
[0032]
In the above manufacturing method, the case where the space 22 formed inside the bag body 5 is filled with helium gas as in the case of the wrapper 4 has been described, but the helium gas is filled in the vacuum chamber 21. If the cap 8 is press-fitted into the communication path 6 of the spout 7 before filling, the inside of the wrapper 4 is filled with helium gas, and the space 22 formed inside the bag body 5 becomes a vacuum lower than the atmospheric pressure. . As described above, even if the package 1 of the ink package is configured as described above, even if the helium gas filled in the inside of the wrapper 4 passes through the wrapper 5 or the spout 7, Deterioration of the degree of deaeration can be suppressed. Further, even when the ink is filled only to a position where the ink does not reach the communication path 6 of the spout 7, the space 22 formed inside the bag 5 is in a reduced pressure state lower than the atmospheric pressure. The amount of air that dissolves in the ink sealed in the air decreases, and the deterioration of the degree of deaeration of the ink can be further suppressed.
[0033]
When the package 1 of the ink package configured as described above is mounted on the ink jet recording apparatus, the wrapper 4 is opened, the ink package 2 is taken out, and as shown in FIG. The ink is inserted along a guide surface (not shown) provided in the apparatus, the ink extraction needle 17 is pierced into the cap 8, and the ink is supplied to the ink jet head via a supply path 16 such as a tube.
[0034]
6 and 7 show another embodiment of the ink package 2. In the present embodiment, a reinforcing member 23 is interposed between the outer surface of the bag 5 and the inner surface of the storage case 12 inside the storage case 12. The reinforcing member 23 absorbs the atmospheric pressure acting on the outer surface of the storage case 12 through the wrapper 4 when the inside of the wrapper 4 containing the storage case 12 is decompressed at a lower level than the atmospheric pressure. This is for preventing the case from being deformed.
[0035]
The reinforcing member 23 includes a first girder member 23a (a lower part in FIG. 3) having a concave portion enclosing one wide surface side of the bag body 5 and a second cross girder member 23b having a concave portion enclosing the other wide surface side (see FIG. 3). 3). Since the first cross beam member 23a and the second cross beam member 23b have the same configuration, detailed description of the second cross beam member 23b is omitted.
[0036]
The first girder member 23a has a support 24 forming a space for enclosing one wide surface side of the bag body 5, and a girder body 25 fixed to a surface of the support 24 facing the inner surface of the storage case 12. And is constituted by.
[0037]
The support plate 24 is a thin plate, has a concave portion 24c which is curved in a concave shape corresponding to one wide surface of the bag 5 filled with ink, and has flat flat peripheral portions 24a on both sides thereof, and a spout. A wall 24b is provided at the end on the seventh side. The concave portion 24c has a deep side at the side where the spout 7 is located so as to form a space that expands to the side where the spout 7 is located as shown in FIG. Is formed so as to gradually become shallow toward. The support plate 24 is formed in a planar shape substantially the same as or slightly larger than the bag body 5.
[0038]
The girder body 25 is configured by combining a plurality of plate-like plate-like members rising at right angles from the surface of the support plate 4 on the side opposite to the bag body 5 in a vertical and horizontal direction. The surface of the girder body 25 opposite to the bag body 5 is formed so as to be substantially parallel to the inner surface of the storage case 12 (bottom wall 9). Although the support plate 4 and the cross beam 25 can be integrally formed of a resin material, the cross beam 25 may be formed of a paper material (corrugated cardboard).
[0039]
The first cross beam member 23a and the second cross beam member 23b configured as described above are superposed so as to sandwich the bag body 5. Since the support plate 24 is configured to have the same size as the peripheral edge of the bag body 5, the peripheral edge of the bag body 5 is sandwiched between the peripheral edges 24a of both members 23a and 23b. Further, the cylindrical portion having the communication hole 6 of the spout 7 is in a state of being surrounded by the wall 24b of both members 23a and 23b. On the other hand, between the outer surface of the bag body 5 and the inner surface of the storage case 12, a cross beam member 25 of the first cross beam member 23a and the second cross beam member 23b is interposed.
[0040]
As described above, by using the reinforcing member 23, the storage case 12 can be formed into a flat shape having a larger flat surface or a configuration in which the wall is thinner than in the former embodiment.
[0041]
As described above, the package 1 of the present ink package can suppress the deterioration of the degree of deaeration of the ink even when the ink package 2 is transported or stored for a long time without being used. It is possible to suppress the occurrence of printing defects due to bubbles generated in the ink, and to maintain a suitable printing state. In addition, when the inside of the wrapper 4 is in a reduced pressure state, the helium gas has a lower solubility in the ink than the air. When the capacity of the ink package is increased or flattened, the case is not deformed due to high pressure reduction as in the related art. Further, in the case where the inside of the wrapper 4 is set to the same state as the positive pressure or the atmospheric pressure, even if an impact is applied to the package 1 of the ink package, the impact force is generated by the helium gas filled in the wrapper 4. It can be absorbed and can prevent the storage case 12 from being damaged.
[0042]
As described above, the present invention has been described based on the embodiments. However, the present invention is not limited to the above embodiments, and it is easily understood that various improvements and modifications can be made without departing from the spirit of the present invention. It can be inferred.
[0043]
For example, in the above embodiment, the ink package 2 is constituted by the bag 5 for storing ink and the storage case 12 containing the same, but the ink may be stored directly in the storage case 12, The storage case 12 can be eliminated and the bag body 5 can be stored directly in the wrapper 4.
[0044]
【The invention's effect】
According to the ink package package of the first aspect, the ink package in which the ink is sealed is contained in the package filled with an inert gas having a lower solubility in ink than air. Therefore, the amount of gas that can pass through the ink package and dissolve in the ink can be reduced compared to air. Therefore, there is an effect that deterioration of the degree of deaeration of the ink can be suppressed. In addition, even when the inside of the wrapper is in a reduced pressure state, it is not necessary to make the inside of the wrapper have a high pressure as in the conventional case. In the case where the pressure is approximately the same as the atmospheric pressure, even if an impact is applied to the ink package, the impact can be absorbed by the inert gas filled in the wrapper, thereby preventing the ink package from being damaged. There is an effect that can be.
[0045]
According to the package of the ink package of the second aspect, in addition to the effect of the package of the ink package of the first aspect, since the inert gas is composed of helium, the material cost can be reduced and the manufacturing can be performed. There is an effect that an increase in cost can be suppressed.
[0046]
According to the package of the ink package according to the third aspect, in addition to the effect of the package of the ink package according to the first or second aspect, the ink filled in the bag is connected to the communication path of the spout. It is filled to a position that cannot be reached. Therefore, it is possible to prevent the ink from adhering to the communication path of the spout and to deteriorate the adhesion between the cap and the communication path due to the ink. Also, since the communication passage of the spout is filled with an inert gas, the amount of gas dissolved in the ink sealed in the ink package can be reduced as compared with the air, and the deterioration of the degree of degassing of the ink is further suppressed. can do. Alternatively, since the communication path of the spout is kept at a pressure lower than the atmospheric pressure, the amount of air contacting the ink sealed in the ink package can be reduced, and the deterioration of the degree of deaeration of the ink can be further suppressed. There is an effect that can be.
[0047]
According to the method for manufacturing a package of an ink package according to the fourth aspect, the inside of the bag is filled with the ink to a position that does not reach the communication path of the spout in the ink filling step. Therefore, it is possible to prevent the ink from adhering to the communication path of the spout and to deteriorate the adhesion between the cap and the communication path due to the ink. Further, the communication path of the spout is reduced in pressure by the pressure reducing step. Therefore, the amount of air that comes into contact with the ink sealed in the ink package can be reduced, and the degree of deaeration of the ink can be suppressed. Further, since the inside of the wrapper containing the ink package is filled with the inert gas by the gas filling step, the amount of gas permeating through the ink package and dissolving in the ink can be smaller than that of air. Therefore, there is an effect that the deterioration of the degree of deaeration of the ink can be further suppressed.
[0048]
According to the method of manufacturing a package of the ink package according to the fifth aspect, the inside of the bag is filled with the ink to a position where the bag does not reach the communication path of the spout in the ink filling step. Therefore, it is possible to prevent the ink from adhering to the communication path of the spout and to deteriorate the adhesion between the cap and the communication path due to the ink. In addition, the communication path of the spout and the inside of the wrapper are filled with an inert gas by the gas filling step. Therefore, the amount of gas dissolved in the ink sealed in the ink package can be reduced as compared with air. Therefore, there is an effect that deterioration of the degree of deaeration of the ink can be suppressed.
[Brief description of the drawings]
FIG. 1A is a perspective view showing a package of an ink package according to an embodiment of the present invention, and FIG. 1B is a sectional view taken along the line II in FIG.
FIG. 2 is an exploded perspective view of the ink package.
FIG. 3A is a front view of a bag body, and FIG. 3B is a cross-sectional view taken along the line III-III in FIG.
FIG. 4 is a diagram for explaining a method of manufacturing a package of the ink package.
FIG. 5 is an enlarged view showing an ink package and an ink extraction needle.
FIG. 6 is an exploded perspective view of another embodiment of the ink package.
FIG. 7 is a longitudinal sectional view of FIG.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 Ink package 2 Ink package 4 Packaging bag 5 Bag 6 Communication passage 7 Spout 8 Cap 12 Storage case 17 Ink extraction needle (ink extraction member)

Claims (5)

In an ink package package including an ink package that seals the ink therein and a wrapper that contains the ink package,
An ink package, wherein the inside of the wrapper is filled with an inert gas having a solubility in ink lower than that of air. The package of the ink package according to claim 1, wherein the inert gas is helium. The ink package includes a bag having flexibility, a spout having an outer peripheral surface fixed to an inner surface of a peripheral portion of the bag, and a communication path communicating between the inside and the outside of the bag, and a spout of the spout. With a cap press-fit into the passage,
The inside of the bag is filled with ink to a position where the ink does not reach the communication path of the spout, and the communication path of the spout is filled with the inert gas, or the pressure is reduced from the atmospheric pressure. The package of the ink package according to claim 1, wherein: The method for manufacturing a package of an ink package according to claim 3,
An ink filling step of filling the ink inside the bag up to a position not reaching the communication path of the spout;
After the ink filling step, a pressure reducing step of reducing the pressure of the communication path of the spout,
After the depressurizing step, a gas filling step of filling the inside of the wrapper with the inert gas in a state where the ink package in which the cap is press-fitted into the communication path is contained inside the wrapper. A method for manufacturing a package of an ink package, comprising: The method for manufacturing a package of an ink package according to claim 3,
An ink filling step of filling the ink inside the bag up to a position not reaching the communication path of the spout;
After the ink filling step, in a state where the ink package before the cap is press-fitted into the communication path is contained in the inside of the wrapper, a pressure reducing step of reducing the pressure in the communication path of the spout and the inside of the wrapper,
After the depressurization step, before the press-fitting of the cap into the communication path and before sealing the wrapper, a gas for filling the inert gas into the communication path of the spout and the wrapper is used. A method for producing a package of an ink package, comprising a filling step.

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