JP4605178B2 - Liquid container - Google Patents

Description

  The present invention relates to a liquid container.

  Conventionally, there is an ink jet printer as a liquid ejecting apparatus that ejects liquid droplets from a nozzle of a liquid ejecting head. Some ink jet printers include an off-carriage type ink supply system in which an ink cartridge is mounted at a place other than a carriage. The off-carriage type ink supply system includes a large-capacity ink cartridge for large-format printing, and the carriage is downsized by not mounting the ink cartridge, and the inkjet printer is downsized and thin. There are some cases.

  In this off-carriage type ink supply system, for example, an ink cartridge is disposed on the main body side. Then, ink is supplied from the ink cartridge to a sub tank or the like mounted on the carriage via an ink supply tube. On the other hand, there has been a problem that the dynamic pressure of the ink in the ink supply tube is increased due to the increase in the ink flow rate due to the higher speed and higher definition of printing by the printer, and the amount of ink supplied to the sub tank is insufficient.

In order to solve this problem, an ink cartridge that forcibly draws out ink by pressurizing the ink pack by storing a bag-shaped ink pack in the case of the ink cartridge and introducing air between the case and the ink pack (For example, Patent Document 1).
JP 2001-212973 A

  However, in an ink cartridge that houses a bag-shaped ink pack in the case, it is necessary to increase the air pressure between the case and the ink pack. For this reason, it is necessary to seal the opening of the case for attaching the ink pack in an airtight state. That is, as shown in FIG. 6, in the ink cartridge 151, the plug 155 that seals the opening of the ink pack 154 protrudes from the opening 153 formed in the case 152 to the outside. In this state, the opening 153 is filled with the O-ring 156 and the engagement member 157 is pushed in from the outside of the case 152, so that the plug 155 is attached to the opening 153 in an airtight state.

  Therefore, in an ink cartridge that accommodates a bag-like ink pack or the like in a case, a seal member for improving the sealing performance is required, and the structure of the seal member is complicated and the cost is increased. Or the man-hour at the time of assembling an apparatus may increase.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a liquid container that can maintain airtightness while reducing the number of parts and the number of assembly steps.

  The liquid container according to the present invention includes a liquid container bag having a flexible portion having a lead-out member for leading the liquid to the outside, a space for accommodating the liquid container bag, and pressurizing the liquid container bag. In a liquid container including a case having an opening that exposes the distal end portion of the lead-out member of the liquid storage bag to the outside, a gap between the opening of the case and the lead-out member is formed from the outside of the case. Sealed with a sealing member.

  According to the present invention, a gap formed between the lead member provided in the liquid containing bag and the opening of the case into which the lead member is inserted can be closed from the outside of the case. Therefore, the air tightness of the liquid container is maintained, and it is possible to increase the pressure in the space and generate a force that crushes the liquid container bag. Further, it is not necessary to insert a member that closes a gap formed between the lead member provided in the liquid storage bag and the opening of the case into which the lead member is inserted into the case. For this reason, it is possible to reduce the number of parts assembling steps and reduce the number of parts.

In the liquid container, the seal member has a shape and a size that can seal at least the gap.
According to the present invention, the seal member only needs to have a shape and size that covers at least the gap, and a component specialized for the size and shape of the gap is unnecessary. Therefore, the cost of parts can be reduced.

In the liquid container, the seal member is bonded to a tip end portion of the lead-out member and an annular protrusion formed along an opening edge of the opening portion from which the tip end portion of the lead-out member is exposed.
According to this invention, it becomes easier to bond the sealing member.

  In the liquid container, a second protrusion is formed on the case so as to surround the annular protrusion, and the second protrusion is attached to the seal member together with the leading end of the lead-out member and the annular protrusion. Glued together.

According to this invention, since the seal member is adhered to the second protrusion, the seal member is hardly peeled off from the annular protrusion.
In this liquid container, the seal member, the lead-out member, and the case are all made of the same material, and the seal member is bonded by thermal welding.

  According to this invention, the sealing member includes the lead-out member provided in the liquid containing bag, and the lead-out member only by thermally welding the seal member from the outside of the liquid containing body after the liquid containing bag is stored in the case. It is possible to seal a gap between the case and the opening of the case. Therefore, the number of parts assembly steps can be reduced.

  In this liquid container, the gap between the opening of the case and the lead-out member is sealed with a seal member so that the outer surface of the case and the end of the lead-out member are substantially flush with each other. According to this invention, joining of the film by heat welding can be performed easily and reliably without welding defects.

  In this liquid container, a liquid outlet opening is formed at the tip of the outlet member, and the opening of the outlet member and the gap are sealed by a common seal member joined to the outer surface of the case. Stopped. According to this invention, it is possible to seal the opening of the liquid outlet and to seal the gap between the opening of the case and the outlet member in the same process. Furthermore, the number of parts can be reduced.

The present invention is a liquid container to be attached to a liquid ejecting apparatus including a liquid ejecting head and a liquid supply needle, and includes a lead-out member for leading liquid to the liquid ejecting apparatus and is flexible. A liquid storage bag having a portion, a case having a space for storing the liquid storage bag and pressurizing the liquid storage bag, and having an opening to which a leading end of a lead-out member of the liquid storage bag is attached, and the liquid storage When a body is attached to the liquid ejecting apparatus, a supply port member provided inside the lead-out member so that the liquid supply needle penetrates, a leading end portion of the lead-out member, and an opening portion of the case It possesses a sealing member covering the opening edge, wherein the casing is characterized in that it comprises a delivering member fixing unit which fixes across the lead-out member.

The liquid container of the present invention includes an outlet member for leading the liquid to the outside, and includes a liquid storage bag having a flexible portion, a space for storing the liquid storage bag, and pressurizing the liquid storage bag. A case having an opening to which the leading end of the lead-out member of the liquid storage bag is attached; a first protrusion formed on an opening edge of the opening of the case; and formed outside the first protrusion. a second protrusion that is, the opening, the first projection and have a, and a seal member covering said second protrusion, wherein the case, leading member for fixing across the lead-out member A fixing unit is provided .

The liquid container of the present invention includes an outlet member for leading the liquid to the outside, and includes a liquid storage bag having a flexible portion, a space for storing the liquid storage bag, and pressurizing the liquid storage bag. A case having an opening to which a leading end of the outlet member of the liquid storage bag is attached; and a seal member covering the opening of the case, an opening edge of the opening and the leading end of the outlet member; The opening edge of the opening and the leading end of the lead-out member are provided on the same plane, and the case includes a lead-out member fixing portion that fixes the lead-out member therebetween. .

Hereinafter, an embodiment embodying the present invention will be described with reference to FIGS.
As shown in FIG. 1, a printer 11 as a liquid ejecting apparatus according to this embodiment is covered with a frame 12. In the frame 12, as shown in FIG. 2, a guide shaft 14, a carriage 15, a recording head 20 as a liquid ejecting head, a valve unit 21, an ink cartridge 23 (see FIG. 1) as a liquid container, and pressurization. A pump 25 (see FIG. 1) is provided.

As shown in FIG. 1, the frame 12 is a substantially rectangular parallelepiped box, and a cartridge holder 12a is formed on the front surface thereof.
As shown in FIG. 2, the guide shaft 14 is formed in a rod shape and is installed in the frame 12. In the present embodiment, the direction in which the guide shaft 14 is installed is referred to as a main scanning direction. The carriage 15 is inserted so as to be relatively movable with respect to the guide shaft 14, and can be reciprocated in the main scanning direction. The carriage 15 is connected to a carriage motor (not shown) via a timing belt (not shown). The carriage motor is supported by the frame 12, and when the carriage motor is driven, the carriage 15 is driven via the timing belt, and the carriage 15 is reciprocated along the guide shaft 14, that is, in the main scanning direction. The

  The recording head 20 provided on the lower surface of the carriage 15 is provided with a plurality of nozzles (not shown) for ejecting ink as a liquid, and ejects ink droplets onto a printing medium such as recording paper. Records print data such as characters. The valve unit 21 is mounted on the carriage 15 and supplies the temporarily stored ink to the recording head 20 with the pressure adjusted.

  In the present embodiment, the valve unit 21 can individually supply two types of ink to the recording head 20 with the pressure adjusted. In the present embodiment, a total of three valve units 21 are provided and correspond to six ink colors (black, yellow, magenta, cyan, light magenta, and light cyan).

  A platen (not shown) is provided below the recording head 20, and this platen is used as a target to be fed in a sub-scanning direction orthogonal to the main scanning direction by a paper feeding means (not shown). The recording medium P is supported.

  As shown in FIG. 1, the ink cartridge 23 is detachably accommodated in the cartridge holder 12a, and six ink cartridges 23 are provided corresponding to the color of the ink. The structure of the ink cartridge 23 will be described with reference to FIGS.

  As shown in FIG. 3, the ink cartridge 23 includes a main body case 31a, an upper case 31b, and an ink pack 32 as a liquid storage bag. As shown in FIG. 4, the main case 31a and the upper case 31b constitute an ink case 31 as a case, and the ink pack 32 is accommodated in the case. FIG. 3 shows only one of the six ink cartridges 23, and the remaining five ink cartridges 23 have the same structure and are not shown.

  As shown in FIG. 3, the ink pack 32 includes an ink bag 32 a that is a flexible portion, an ink outlet member 32 b as a liquid outlet member, and a supply port member 33. The ink bag 32a is formed of a material having flexibility and a gas barrier. For example, two sheets of an aluminum laminate film having a structure in which a nylon film is sandwiched between outer layers and a polypropylene film are stacked on each other, and the periphery thereof is thermally welded. It is formed by joining by the method of etc.

  The ink lead-out member 32b is made of, for example, polypropylene, and is attached to the ink bag 32a by a method such as heat welding. Specifically, when forming the ink bag 32a, after joining the three sides of the two laminated aluminum laminate films by heat welding, the ink lead-out member 32b is arranged at the center of the remaining one side. Ink pack 32 is formed by heat-welding in this state. The ink in the ink bag 32a is stored in a deaerated state. The ink lead-out member 32b has a substantially cylindrical shape, and the inside forms an ink lead-out port 32c. The ink stored in the ink bag 32a is taken out through the ink outlet 32c. Further, the ink outlet 32c is provided with a valve mechanism that is opened only when ink is supplied, so that the ink in the ink bag 32a does not leak. More specifically, the valve mechanism of the ink outlet 32c is provided in the ink outlet 32c of the ink outlet member 32b, and a spring seat 34 and a coil spring 35 are provided on the inner side of the supply port member 33. Yes. The coil spring 35 biases the spring seat 34 toward the supply port member 33, whereby the spring seat 34 closes the supply port 33 a of the supply port member 33. When the ink cartridge 23 is disposed in the cartridge holder 12a, the ink supply needle formed in the liquid ejecting apparatus penetrates through the supply port member 33 and the ink outlet member 32b and resists the elastic force of the coil spring 35. The spring seat 34 is pressed toward the ink bag 32a. When the spring seat 34 is pressed and separated from the supply port member 33, the ink in the ink bag 32 a flows out from the gap between the supply port member 33 and the spring seat 34.

  Accordingly, when not mounted on the liquid ejecting apparatus, the spring seat 34 seals the supply port 33a. When the spring seat 34 is mounted on the liquid ejecting apparatus, the spring seat 34 is pushed up by the ink supply needle formed on the liquid ejecting apparatus. It is comprised so that it can be supplied. In this case, the ink pack can be easily handled when the ink pack 32 is attached to the ink case 31 after the ink is injected into the ink pack 32.

  The supply port member 33 disposed inside the ink outlet port 32c of the ink outlet member 32b is formed of an elastic material such as an elastomer. The supply port member 33 has a substantially cylindrical shape and is open at the top and bottom, and as shown in FIG. 5, the outer peripheral surface thereof is fixed in elastic contact with the inner wall surface of the ink outlet port 32c of the ink outlet member 32b. The inside of the supply port member 33 forms a funnel-shaped supply port 33a and elastically contacts the outer periphery of the liquid supply needle formed in the liquid ejecting apparatus. Then, the liquid inlet of the liquid supply needle inserted into the supply port 33a is positioned in the flow path 32d of the ink outlet member 32b, whereby the ink stored in the ink bag 32a is supplied to the liquid ejecting apparatus. Note that the opening end of the supply port member 33 is immersed inside the tip end portion R1 of the ink outlet member 32b (ink outlet port 32c).

  The main body case 31a includes an outer case 31c and an inner case 31d, and each is formed of, for example, polypropylene. The outer case 31c has a substantially rectangular shape and is a box with an upper opening. The inner case 31d is slightly smaller than the outer case 31c and has a shape similar to the ink pack 32, and restricts the movement of the ink pack 32 according to the movement of the ink case 31. The upper case 31b is formed of a substantially rectangular plate-like body that covers the upper surface of the main body case 31a, and is formed of, for example, polypropylene. The upper case 31b is provided with a locking piece K1 at a predetermined location, and engages with an engagement member K2 formed between the outer case 31c and the inner case 31d when the upper case 31b is put on the upper surface of the main body case 31a. It is supposed to be.

  A square supply port mounting portion 31f is formed at the center of the front surface 31e of the main body case 31a. The supply port mounting portion 31f is provided with an opening 31g communicating with the inner case 31d. An annular protrusion R2 is formed to project from the opening edge of the opening 31g toward the outside of the ink case 31 along the opening edge. In addition, cylindrical independent projections R3 as second projections are formed at the four corners of the supply port attachment portion 31f in the outward direction of the ink case 31 with the same projection amount as the annular projection R2. ing.

An air inlet H is formed on one side of the supply port attachment portion 31f. The air inlet H communicates the outside of the main body case 31a and the inside of the inner case 31d.
When the ink pack 32 is stored in the ink case 31, the ink lead-out member 32b of the ink pack 32 is stored in the inner case 31d so as to be exposed from the inside to the outside of the opening 31g. At this time, as shown in FIG. 5, the ink lead-out member 32b exposed from the opening 31g is stored such that the tip end R1 is in the same protruding position as the annular protrusion R2.

  When the ink pack 32 is stored in the inner case 31d, the first sealing film F1 (see FIG. 3) made of polypropylene is thermally welded to the inner case 31d. Further, a second sealing film F2 made of polypropylene as a sealing member is thermally welded to the supply port mounting portion 31f of the ink case 31. More specifically, the second sealing film F2 is formed with respect to the annular protrusion R2 formed at the opening edge of the opening 31g protruding outward from the supply port attachment portion 31f and the tip R1 of the ink outlet member 32b. While being heat-welded, it is heat-welded to each independent protrusion R3.

  Accordingly, when the second sealing film F2 is heat-welded to the annular protrusion R2 and the leading end portion R1 of the ink lead-out member 32b, the opening 31g and the ink lead-out member 32b are formed by the second sealing film F2. The gap D between them is sealed. As a result, the space S formed by the inner case 31d for storing the ink pack 32 and the sealing film is in a sealed state except for the air inlet H. Accordingly, the air supplied from the pressure pump 25 (see FIG. 1) supported by the frame 12 into the inner case 31d from the air inlet H is airtight because the inner case 31d is kept airtight. The ink pack 32 stored in the container is pressurized.

  Further, since the second sealing film F2 is thermally welded to the leading end portion R1 of the ink lead-out member 32b, the ink lead-out port 32c of the ink lead-out member 32b is also sealed, and the inside of the ink pack is blocked from the outside. The second sealing film F2 is thermally welded to the annular protrusion R2 to seal the ink outlet 32c of the ink outlet member 32b. Therefore, a protrusion is inserted from the outside to open the spring seat 34. In addition, there is no problem that air bubbles are taken into the ink pack. Furthermore, since the second sealing film F2 is thermally welded to the four independent protrusions R3 surrounding the annular protrusion R2, the second sealing film F2 is prevented from being peeled off from the annular protrusion R2 by some force. is doing.

  Further, the main body case 31a is formed with two ink lead-out member fixing ribs 31j so as to sandwich the ink lead-out member 32b, and an end portion 31j1 of the ink lead-out member fixing rib 31j is formed in a disc shape on the outer periphery of the ink lead-out member 32b. The main body case 31a is fixed in contact with the annular protrusion 32b1 formed on the main body. This restricts the movement of the ink lead-out member 32b into the main body case 31a during heat welding.

  The anti-rotation member 31k is a protrusion that engages with a recess (not shown) formed in the annular protrusion 32b1 of the ink lead-out member 32b. Positioned at the position.

Next, the operation of the printer 11 configured as described above when supplying and printing ink will be described.
As shown in FIG. 1, by sliding the ink cartridge 23 for each color toward the back side in the sub-scanning direction with respect to the cartridge holder 12a, the ink cartridge 23 for each color is set in the cartridge holder 12a. When the ink cartridge 23 is set, the ink supply needle provided on the cartridge holder 12a breaks through the second sealing film F2 and is connected to the ink lead-out member 32b. The ink supply needle is connected to the valve unit 21 via the ink supply tube 36. Accordingly, the ink in the ink pack 32 is supplied to the valve unit 21 and is supplied to the recording head 20 with the pressure adjusted.

  At the same time, the air introduction member provided in the cartridge holder 12a is connected to the air introduction port H of the ink cartridge 23 (main body case 31a). The air introduction member is connected to the pressurizing pump 25 through an air introduction tube. Therefore, the pressurized air can be introduced into the space S in which the ink pack 32 is accommodated by the pressure pump 25. At this time, the opening of the inner case 31d is sealed with the first sealing film F1, and the gap D between the opening 31g and the ink lead-out member 32b is sealed with the second sealing film F2. Therefore, the air supplied from the air inlet H into the inner case 31d does not leak outside. As a result, the pressure control of the ink pack 32 can be accurately performed.

  Thus, when the ink pack 32 of each ink cartridge 23 is pressurized by the pressurized air supplied from the pressure pump 25, the ink in the ink pack 32 is supplied to the valve unit 21. The ink temporarily stored in the valve unit 21 is supplied to the recording head 20 with the pressure adjusted.

  Then, based on the image data, the carriage 15 is moved in the main scanning direction while the recording medium P is moved in the sub-scanning direction by the paper feeding means, and ink is ejected from the recording head 20, so that the recording medium P is ejected onto the recording medium P. Printing can be performed.

According to the above embodiment, the following effects can be obtained.
(1) In the above embodiment, the second sealing film F2 is thermally welded to the annular protrusion R2 formed on the opening edge of the opening 31g and the tip end R1 of the ink outlet member 32b, and each independent protrusion Since it is heat welded to R3, the gap D between the opening 31g and the ink lead-out member 32b can be easily sealed with the second sealing film F2. Accordingly, the space S formed by the inner case 31d for storing the ink pack 32 and the sealing film is reliably kept in an airtight state when the air introduction port H is connected to the air introduction tube. As a result, the airtightness is maintained, so that it is possible to increase the pressure in the space S and generate a force that crushes the ink pack 32.

  (2) In the above embodiment, since the gap D between the opening 31g and the ink lead-out member 32b is sealed with the second sealing film F2, a special member for closing the gap D as in the prior art. Need not be assembled from the inside of the ink case 31. Therefore, the number of parts assembly steps can be reduced.

  (3) In the above embodiment, since the second sealing film F2 seals the ink outlet 32c of the ink outlet member 32b at the same time, the ink in the ink pack 32 is kept airtight. 23 can be stored for a long time.

  (4) In the above embodiment, the four independent protrusions R3 surrounding the annular protrusion R2 are formed, and the second sealing film F2 is thermally welded to the independent protrusion R3. Therefore, even if some force is applied to the second sealing film F2, the second sealing film F2 is hardly peeled off from the annular protrusion R2 because the second sealing film F2 is welded to the independent protrusion R3. it can.

  (5) In the above embodiment, the second sealing film F2 may be of a size and shape that seals at least the gap D between the opening 31g and the ink lead-out member 32b. unnecessary. Therefore, the cost of parts can be reduced.

  (6) In the above embodiment, the gap between the opening 31g of the main body case 31a and the ink outlet member 32b is set so that the outer surface of the main body case 31a and the end of the ink outlet member 32b are substantially flush with each other. Sealed with sealing film F2. Therefore, joining by heat welding can be performed easily and reliably.

  (7) In the above embodiment, the ink outlet 32c of the ink outlet member 32b and the gap between the opening 31g of the main body case 31a and the ink outlet member 32b are sealed with the second sealing film F2. Therefore, joining by heat welding can be performed easily and reliably. Further, in the same process, the ink outlet 32c of the ink outlet member 32b can be sealed, and the gap between the opening 31g of the main body case 31a and the ink outlet member 32b can be sealed.

In addition, you may change the said embodiment as follows.
In the above embodiment, when the ink supply needle provided on the cartridge holder 12a breaks through the second sealing film F2 and is connected to the ink lead-out member 32b, the second sealing film F2 is easily broken through. The second sealing film F2 may be cut in a cross shape, an X shape, or a hole.

  In the above embodiment, the front surface 31e of the ink case 31 is provided with one annular protrusion R2, but may be provided with two or more annular protrusions. Thereby, the 2nd sealing film F2 can be heat-sealed more strongly.

  In the above embodiment, the ink case 31, the supply port member 33, and the second sealing film F2 are each made of polypropylene, but may be any material that can be thermally welded. For example, polyethylene may be used.

  In the above embodiment, the second sealing film F2 has a square shape and the same size as the supply port attachment portion 31f, but may be any shape and size that can at least close the gap D. For example, a circular shape having the same diameter as one side of the supply port attachment portion 31f and an annular shape covering the gap D may be used.

In the above embodiment, the second sealing film F2 is a film, but may be an adhesive tape, for example.
In the above embodiment, six ink cartridges 23 are provided, but any number of ink cartridges may be installed in the printer 11.

  In the above embodiment, the supply port member 33 arranged in the ink lead-out member 32b is opened. When one of the openings of the supply port 33a is sealed with the same material as that of the supply port 33a and is mounted on the liquid ejecting apparatus, the ink supply needle formed on the liquid ejecting apparatus is sealed. The ink cartridge may be in a state where ink can be supplied by penetrating a recess formed in the center of 33a. In this case, the ink pack can be easily handled when the ink pack 32 is attached to the ink case 31 after the ink is injected into the ink pack 32, and is sealed by the second sealing film F2. There is no problem that the protrusion 33a is inserted to open the supply port 33a and take bubbles into the ink pack.

  In each of the above embodiments, a printer (printing apparatus including a facsimile, a copier, etc.) that ejects ink has been described as the liquid ejecting apparatus. However, a liquid ejecting apparatus that ejects another liquid may be used. For example, as a liquid ejecting apparatus for ejecting liquids such as electrode materials and color materials used in the manufacture of liquid crystal displays, EL displays, and surface-emitting displays, as a liquid ejecting apparatus for ejecting bioorganic materials used in biochip manufacturing, and as precision pipettes The sample injection device may be used.

1 is a perspective view of a printer according to an embodiment. Similarly, an exploded perspective view of the printer. Similarly, an exploded perspective view of an ink cartridge. Similarly, sectional drawing of an ink cartridge. Similarly, principal part sectional drawing of an ink cartridge. Sectional drawing of the conventional ink cartridge.

Explanation of symbols

  D ... Gap, F2 ... Second sealing film, P ... Recording medium, R1 ... Tip, R2 ... Ring projection as first projection, R3 ... Independent projection as second projection, S ... Space, 11 ... Printer, 15 ... Carriage, 20 ... Recording head as liquid ejecting head, 23 ... Ink cartridge, 25 ... Pressure pump, 31 ... Ink case, 31a ... Main body case, 31e ... Front, 31f ... Supply port attachment Part, 31g ... opening, 32 ... ink pack, 32a ... ink bag, 32b ... ink outlet member, 32c ... ink outlet port, 33 ... supply port member, 33a ... supply port.

Claims (3)

A liquid container to be attached to a liquid ejecting apparatus including a liquid ejecting head and a liquid supply needle,
A liquid containing bag having a flexible part and a lead member for leading the liquid to the liquid ejecting apparatus;
A case having a space for storing the liquid storage bag and having a space for pressurizing the liquid storage bag, and having an opening attached to a leading end of the outlet member of the liquid storage bag;
A supply port member provided inside the lead-out member so that the liquid supply needle penetrates when the liquid container is attached to the liquid ejecting apparatus;
Possess the tip portion of the lead member, and a seal member covering an opening edge of the opening of the case,
The liquid container according to claim 1, wherein the case includes a lead member fixing portion that fixes the lead member with the lead member interposed therebetween . A liquid containing bag having a lead-out member for leading the liquid to the outside and having a flexible portion;
A case that contains the liquid containing bag, has a space for pressurizing the liquid containing bag, and has an opening to which the leading end of the outlet member of the liquid containing bag is attached;
A first protrusion formed on an opening edge of the opening of the case;
A second protrusion formed on the outside of the first protrusion;
The opening, have a, and a seal member covering said first protrusion and said second protrusion,
The liquid container according to claim 1, wherein the case includes a lead member fixing portion that fixes the lead member with the lead member interposed therebetween . A liquid containing bag having a lead-out member for leading the liquid to the outside and having a flexible portion;
A case that contains the liquid containing bag, has a space for pressurizing the liquid containing bag, and has an opening to which the leading end of the outlet member of the liquid containing bag is attached;
A seal member that covers the opening of the case, the opening edge of the opening, and the tip of the lead-out member;
The opening edge of the opening and the leading end of the lead-out member are provided on the same plane ,
The liquid container according to claim 1, wherein the case includes a lead member fixing portion that fixes the lead member with the lead member interposed therebetween .

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