JP6651783B2 - Ink container and ink dispense system - Google Patents

Description

  The present invention relates to an ink container that stores ink to be injected into an ink tank, and an ink ejection system that pours ink from the ink container into the ink tank.

  The printer performs printing by supplying ink from an ink tank. When the ink tank is emptied due to the use of ink, an ink ejection system is used in which ink is supplied from an ink storage container storing refill ink to the ink tank to replenish the ink tank. Patent Literature 1 discloses this type of ink dispensing system. In Patent Literature 1, a bag-shaped ink pack made of a flexible film and a discharge member made of a tubular member fixed to a corner of the ink pack by heat welding are used as an ink storage container for storing refill ink. Use an outlet. In Patent Literature 1, ink is injected into an ink injection section (ink injection port) of a cartridge which is a detachable ink tank from an ink discharge section (ejection port) of an ink container.

JP 2014-46532 A

  As described in Patent Document 1, a structure in which a cylindrical member constituting an ejection port is inserted into an ink injection section of an ink tank to inject ink is used. However, there is a problem that the ejection opening is easily detached from the ink injection portion because the posture of the ink ejection portion is not easily stabilized. If the ejection port is separated from the ink injection section during the ink injection operation, the ink scatters outside the ink injection section.

  SUMMARY OF THE INVENTION In view of the foregoing, an object of the present invention is to propose an ink ejection system and an ink storage container in which the posture of the ink storage container is stable during the ink injection operation and the ink does not easily leak to the outside.

  In order to solve the above-mentioned problem, the present invention is an ink container for injecting ink into an ink tank via an ink injection unit provided in the ink tank, the ink container being capable of storing the ink. An ink pack, an ink ejection section for pouring the ink inside the ink pack to the outside, and a position separated from the tip of the ink ejection section by a predetermined distance in the center axis direction of the ink ejection section, A projection projecting from the outer peripheral surface of the ink ejection section in a direction intersecting with the central axis, wherein a distance from the projection to the tip of the ink ejection section is an outer end of the ink injection section. The length is larger than the length from the inner end to the inner end, and when the ink ejecting portion is inserted into the ink injecting portion, the projecting portion comes into contact with the outer end portion, and the tip and the projecting portion The part located between Characterized in that it is positioned in contact serial and inner end those.

  According to the present invention, when the ink ejection section is inserted into the ink injection section, the protrusion contacts the outer end of the ink injection section, whereby the ink ejection section is positioned in the insertion direction. In addition, since the ink ejection section abuts on the inner end of the ink injection section, a state in which the tip of the ink ejection section is hooked on the inner end can be formed. As described above, when the tip of the ink ejection section is hooked on the inner end of the ink injection section, the ink ejection section does not easily shake even when the ink pack is pushed. Therefore, it is possible to form a state in which the ink discharging section is hardly dropped from the ink injection section, and the posture of the ink pack can be stabilized. Therefore, the possibility that the ink leaks to the outside during ink injection can be reduced.

  In the present invention, the ink pack includes a first edge provided with the ink ejection portion, a second edge located on an opposite side to the first edge, and It is desirable to have an air introduction hole provided at a position near the second edge, and a sealing member for sealing the air introduction hole. With this configuration, the air can be introduced into the ink pack by releasing the sealed state of the air introduction hole at the time of ink ejection. This eliminates the need to press the ink pack at the time of ink ejection, so that the posture of the ink pack can be stabilized.

  In the present invention, the ink pack may include a first side wall provided with the air introduction hole, a second side wall facing the first side wall, and the first side wall and the second side wall. And a gap forming member that forms a gap therebetween. With this configuration, it is possible to prevent the air introduction hole from being blocked by the second side wall portion, so that it is possible to smoothly introduce air into the ink pack at the time of ink ejection.

  In the present invention, it is preferable that a through-hole overlapping the air introduction hole is formed in the gap forming member. With this configuration, since the air introduction hole is not closed by the gap forming member, the air introduction hole can be reliably communicated with the gap. Therefore, air can be smoothly introduced into the ink pack at the time of ink ejection.

  In the present invention, it is preferable that the sealing member is formed of a film that is attached to an outer surface of the ink pack so as to seal the air introduction hole and that can be peeled from the outer surface. In this case, the sealed state of the air introduction hole can be released by a simple operation of peeling the film. Therefore, the operation of discharging the ink can be easily performed.

  Next, the present invention has an ink tank provided with an ink injecting section for injecting ink therein, and an ink container capable of injecting ink into the ink tank via the ink injecting section. An ink dispensing system, wherein the ink container is an ink pack capable of containing the ink, an ink ejection unit for injecting the ink inside the ink pack to the outside, and a tip of the ink injection unit. A projection projecting from the outer peripheral surface of the ink ejection section in a direction intersecting with the central axis at a position separated by a predetermined distance in a direction of a center axis of the ink ejection section; and The distance from the protruding portion to the tip of the ink ejection portion is greater than the length from the outer end to the inner end of the ink injecting portion; Characterized in that it comprises an engaging engagement portion a protrusion of the click container.

  According to the present invention, since the protruding portion can be engaged with the ink injection portion, even if the ink pack is pushed, the ink ejection portion does not easily swing. Therefore, it is possible to form a state in which the ink discharging section is hardly dropped from the ink injection section, and the posture of the ink pack can be stabilized. Therefore, the possibility that the ink leaks to the outside during ink injection can be reduced.

  Next, the present invention provides an ink container for injecting ink into an ink tank via an ink injecting section provided in the ink tank, the ink pack being capable of storing the ink, An ink ejection section for pouring the ink inside the pack to the outside, and a length extending from an outer end to an inner end of the ink injection section from a tip of the ink injection section to a center axis direction of the ink ejection section. A protrusion projecting in a direction intersecting with the central axis from an outer peripheral surface of the ink ejection section at a position separated by a predetermined distance larger than the ink ejection section, the ink ejection section being provided on the ink pack; A second edge located on the opposite side to the first edge is closer to the air introduction hole than the ink ejection portion, and the ink is inserted between the ink ejection portion and the air introduction hole. Form a gap inside the pack A gap forming member, characterized in that comprises a.

  ADVANTAGE OF THE INVENTION According to this invention, air can be introduced into an ink pack from an air introduction hole at the time of ink discharge, and the operation which pushes an ink pack becomes unnecessary. Therefore, the posture of the ink pack can be stabilized. In addition, since the air introduction hole can be prevented from being blocked by the gap forming member, air can be smoothly introduced into the ink pack at the time of ink ejection.

FIG. 2 is a perspective view of an ink dispensing system. FIG. 3 is a perspective view of an ink tank. FIG. 3 is a perspective view of an ink container to which the present invention is applied. FIG. 3 is an explanatory diagram illustrating a state where an ink container is positioned in an ink tank. It is an expanded sectional view of an ink injection part and an ink discharge part. It is explanatory drawing of an air introduction hole, a sealing member, and a gap formation member. It is explanatory drawing of the clearance gap formation member of a modification. FIG. 3 is an explanatory diagram of an ink injection unit and an ink injection unit in the ink injection system to which the present invention has been applied.

  Hereinafter, an embodiment of an ink container and an ink ejection system of the present invention will be described with reference to the drawings.

(Ink dispense system)
FIG. 1 is a perspective view of the ink dispensing system. The ink dispensing system 1 includes an ink tank 2 and an ink container 3 that stores ink for refilling the ink tank 2. The ink tank 2 is provided in the liquid ejecting device 4. The liquid ejecting apparatus 4 is a multifunction device including an inkjet printer 5 and a scanner unit 6 that is disposed so as to overlap the upper portion of the inkjet printer 5. When the opening / closing lid 41 provided at the rear end of the upper surface of the liquid ejecting apparatus 4 is opened rearward, the paper supply port 42 opens upward. In this state, the opening / closing lid 41 functions as a tray on which the print medium P is placed. The print medium P set in the paper supply port 42 is supplied to the inkjet printer 5 through the back of the scanner unit 6.

  An operation panel 43 is provided on the front surface of the liquid ejecting apparatus 4, and a discharge port 44 for discharging the print medium P is opened below the operation panel 43. Opening / closing covers 45 are provided on one side and the other side in the width direction of the discharge port 44, respectively. The opening / closing cover 45 can be opened forward centering on the lower end. When the opening / closing cover 45 is opened forward, the tank housing portion 46 in which the ink tank 2 is arranged is exposed to the outside. Two ink tanks 2 are arranged in each of the tank housing portions 46. A window 47 is formed on the opening / closing cover 45 so that the upper limit mark M1 and the lower limit mark M2 (see FIG. 2) provided on the lower front surface of the ink tank 2 can be viewed with the opening / closing cover 45 closed. ing.

  The inkjet printer 5 includes a printing mechanism (not shown) disposed behind the operation panel 43 and the tank housing 46. The printing mechanism includes an inkjet head that ejects ink supplied from the ink tank 2, a medium transport mechanism that transports the print medium P supplied from the paper supply port 42 and discharges the print medium P from the discharge port 44, A head moving mechanism for moving the inkjet head in a direction intersecting the transport direction is provided. The printing mechanism performs printing on the printing medium P by discharging ink droplets from the inkjet head while changing the relative position of the inkjet head with respect to the printing medium P.

  When ink is used for printing or the like and the amount of ink stored in the ink tank 2 becomes smaller than the lower limit, the ink is replenished from the ink storage container 3 to the ink tank 2. As shown in FIG. 1, an ink injection section 21 is provided at an upper portion of the front surface of the ink tank 2. On the other hand, the ink container 3 is provided with an ink discharging section 31 for pouring the ink stored therein to the outside. The ink ejection system 1 inserts the ink ejection unit 31 of the ink container 3 into the ink injection unit 21 of the ink tank 2, and transmits the ink from the ink container 3 via the ink ejection unit 31 and the ink injection unit 21. Inject ink into the tank 2.

(Ink tank)
FIG. 2 is a perspective view of the ink tank 2. The ink tank 2 includes a case 22, an ink injection unit 21 formed in the case 22, and an air opening unit 23. One side of the case 22 is made of a flexible sheet member. The hollow case 22 is formed by welding a sheet member to an edge of an opening formed in a housing formed of a synthetic resin such as nylon or polypropylene. An ink supply unit (not shown) for supplying ink to the inkjet head is provided on the bottom surface or the surface facing rearward of the case 22.

  The case 22 includes a first wall 24 facing forward with the ink tank 2 disposed in the tank housing portion 46 of the liquid ejecting apparatus 4, and a second wall facing forward at a position above and behind the first wall 24. 25 and a third wall 26 connecting the lower edge of the second wall 25 and the upper edge of the first wall 24. The third wall 26 is an inclined surface facing obliquely upward. The first wall 24 has an upper limit mark M1 indicating the upper limit of the ink amount and a lower limit mark M2 indicating the lower limit of the ink amount. The atmosphere opening portion 23 is formed on a fourth wall 27 located at the upper end of the case 22. When the ink in the ink tank 2 is supplied to the inkjet head side and the amount of ink decreases, air is introduced into the ink tank 2 from the atmosphere opening part 23.

  The ink injection section 21 projects in a cylindrical shape obliquely forward from substantially the center of the third wall 26. The center axis L <b> 1 of the ink injection unit 21 faces in a direction perpendicular to the third wall 26. The ink injecting section 21 includes a penetrating section 28 that allows the internal space of the ink tank 2 to communicate with the outside. One end (upper end) of the penetrating portion 28 opens at the outer end 21a of the ink injecting portion 21, and the other end (lower end) of the penetrating portion 28 opens at the inner end 21b of the ink injecting portion. Here, the outer end 21a is an upstream end in the ink injection direction in the ink injection section 21, and the inner end 21b is a downstream end in the ink injection direction in the ink injection section 21. As shown in FIG. 1, the ink injection unit 21 projects obliquely forward with the opening / closing cover 45 of the liquid ejecting apparatus 4 opened forward. In this state, the upper end of the penetrating portion 28 opens obliquely upward. When the ink is not injected, the plug 28 closes the through portion 28.

(Ink storage container)
FIG. 3 is a perspective view of the ink container 3 to which the present invention is applied. The ink storage container 3 includes an ink pack 32 capable of storing ink, and an ink discharging unit 31 provided at an edge of the ink pack 32 for discharging the ink stored in the ink pack 32 to the outside. The ink pack 32 has a form called a standing pouch in which a flexible film is formed in a self-supporting bag shape. The film constituting the ink pack 32 is a film having a multilayer structure in which a plurality of resin films are laminated. Alternatively, the film constituting the ink pack 32 may be a film in which an aluminum film is disposed on the intermediate layer.

  The ink pack 32 includes a first side wall 33, a second side wall 34, and a bottom 35. The first side wall 33 and the second side wall 34 are formed of a vertically long rectangular film as a whole. The first side wall 33 and the second side wall 34 have the same shape, and the side edges and the upper end are joined by heat welding. The lower edge of the first side wall 33 and the lower edge of the second side wall 34 are joined to the outer peripheral edge of the bottom 35. The ink pack 32 includes a notch 36 provided at a corner where one side edge and the upper edge of the first side wall 33 and the second side wall 34 are connected.

  The ink discharging portion 31 is formed by joining a tubular member to the edge of the cutout portion 36 by heat welding or the like. In the ink discharging section 31, one end of the cylindrical member protrudes from the edge of the notch 36 to the outside of the ink pack 32, and the other end of the cylindrical member is inserted into the ink pack 32 from the edge of the notch 36. Have been. The portion of the ink ejection section 31 protruding outside the ink pack 32 faces in a diagonal direction of the ink pack 32 or a direction close to the diagonal direction.

  The ink container 3 has a protrusion formed at a position separated by a predetermined distance H1 in the direction of the center axis L2 of the ink discharge unit 31 from the tip 31a of the ink discharge unit 31 protruding outside the ink pack 32. 37 is provided. The ink ejection section 31 has a cylindrical shape, and the projection 37 projects radially from the outer peripheral surface of the ink ejection section 31. The protruding portion 37 is formed in a flange shape over the entire circumference of the ink discharging portion 31.

  FIG. 4 is an explanatory diagram illustrating a state where the ink container 3 is positioned in the ink tank 2. FIG. 5 is an enlarged sectional view of the ink injection section 21 and the ink ejection section 31 (partly enlarged view of the area A in FIG. 4). As shown in FIG. 4, in the ink ejection system 1, since the ink injection unit 21 of the ink tank 2 is obliquely upward, the ink is stored so that the ink injection unit 31 of the ink container 3 is obliquely downward. The container 3 is tilted, and the ink ejection section 31 is inserted into the ink injection section 21. The inner diameter of the penetrating part 28 formed in the ink injection part 21 is larger than the outer diameter of the ink discharging part 31. The distance H1 from the protrusion 37 to the tip 31a of the ink ejection section 31 is larger than the length H2 from the outer end 21a to the inner end 21b of the ink injection section 21.

  For this reason, the ink ejection section 31 is positioned such that the central axis L2 of the ink ejection section 31 is inclined with respect to the central axis L1 of the ink injection section 21 when inserted into the ink injection section 21. You. That is, when the ink ejection unit 31 is inserted into the ink injection unit 21, the protrusion 37 contacts the outer end 21 a of the ink injection unit 21, and the tip 31 a of the ink ejection unit 31 is 37 is positioned in contact with the inner end 21 b of the ink injection section 21. That is, in the present embodiment, the length of the ink discharging portion 31 (the length from the projecting portion 37 to the tip 31a) is set so that the inner end portion 21b of the ink filling portion 21 and the outer peripheral surface of the ink discharging portion 31 are securely in contact with each other. The distance H1) has been determined.

(Air inlet)
As shown in FIGS. 3 and 4, the ink container 3 includes an air introduction hole 50 formed in the ink pack 32 and a sealing member 51 that seals the air introduction hole 50. Although not shown in FIGS. 3 and 4, a gap forming member 52 (see FIG. 6) is arranged inside the ink pack 32 at a position overlapping the air introduction hole 50. 6A and 6B are explanatory views of the air introduction hole 50, the sealing member 51, and the gap forming member 52. FIG. 6A is a sectional view (BB sectional view of FIG. 4), and FIG. FIG. 4 is a perspective view of a gap forming member 52.

  The air introduction hole 50 is formed at a corner of the ink pack 32. In the present embodiment, the corner where the air introduction hole 50 is arranged is a corner that is located diagonally to the corner where the ink ejection section 31 is arranged. Here, assuming that one edge in the longitudinal direction of the ink pack 32 is a first edge 32a and the other edge is a second edge 32b, a cutout portion 36 is formed in the first edge 32a, The protrusion 31 is provided in the notch 36. The air introduction hole 50 is formed near the second edge 32b located on the opposite side to the first edge 32a. That is, the air introduction hole 50 is provided in a portion of the ink pack 32 opposite to the side where the ink ejection portion 31 is provided, and is located at a position closer to the edge of the second edge 32b than the ink ejection portion 31. An air introduction hole 50 is provided.

  As shown in FIG. 6A, the air introduction hole 50 is formed in the first side wall 33 of the ink pack 32. The sealing member 51 is a flexible film, and is removably attached to the outer surface of the first side wall 33. The sealing member 51 is attached at a position that completely covers the air introduction hole 50. When the sealing member 51 is peeled off, air is introduced into the ink pack 32 through the air introduction hole 50. The first side wall 33 provided with the air introduction hole 50 faces the second side wall 34. A gap forming member 52 that forms a gap between the first side wall 33 and the second side wall 34 at a position where the air introduction hole 50 is provided is disposed between the first side wall 33 and the second side wall 34. Have been.

  The gap forming member 52 includes a disk portion 53 and four legs 54 projecting from an outer peripheral edge of the disk portion 53 in a direction perpendicular to the disk portion 53. A through hole 55 is formed in the center of the disk portion 53. The four legs 54 are arranged at equal angular intervals, and a gap is formed between adjacent legs 54. The number of the legs 54 need not be four, but may be five or more or three or less. The gap forming member 52 is disposed at a position where the through hole 55 overlaps the air introduction hole 50. That is, when the through hole 55 and the air introduction hole 50 overlap, a continuous hole that connects the inside and the outside of the ink pack 32 to each other is formed.

  The shape of the through-hole 55 may be different from that of the air introduction hole 50, and the through-hole 55 may be at least partially overlapped with the air introduction hole 50. Further, instead of providing a circular hole such as the through hole 55, a notch portion cut out from the outer peripheral edge of the disk portion 53 is formed, and the notch portion overlaps with the air introduction hole 50. May be. Here, in order to prevent the through hole 55 and the air introduction hole 50 from being displaced, the disk portion 53 may be bonded to the inner surface of the first side wall portion 33.

  A space surrounded by the four legs 54 is formed on the back side of the disk 53. As shown in FIG. 6A, when the gap forming member 52 is arranged at a position where the air introduction hole 50 is provided, a gap is formed between the first side wall 33 and the second side wall 34. The through hole 55 faces a space surrounded by the four legs 54. Therefore, the air introduction hole 50 overlapping the through hole 55 is not blocked by the second side wall portion 34, and the space between the four legs 54 and the through hole 55 allows the ink pack 32 to be closed. Communicates with the interior of the

(Effects)
As described above, in the ink container 3 of the present embodiment, when the ink ejection section 31 is inserted into the ink injection section 21, the projection 37 comes into contact with the outer end 21 a of the ink injection section 21, so that the ink The protrusion 31 is positioned in the insertion direction. In addition, since the ink ejection section 31 abuts on the inner end 21b of the ink injection section 21, a state in which the tip of the ink ejection section 31 is hooked on the inner end 21b can be formed. As described above, when the leading end 31a of the ink discharging unit 31 is caught by the inner end 21b of the ink filling unit 21, the ink discharging unit 31 is less likely to shake even when the ink pack 32 is pressed. Therefore, it is possible to form a state in which the ink ejection section 31 is hard to fall from the ink injection section 21, and the posture of the ink pack 32 can be stabilized. Therefore, the possibility that the ink leaks to the outside during ink injection can be reduced.

  In addition, the ink container 3 of the present embodiment has an air introduction hole 50 provided at an end opposite to the end provided with the ink ejection section 31, and a seal for sealing the air introduction hole 50. Since the stop member 51 is provided, the sealing member 51 is peeled off to release the sealed state of the air introduction hole 50, so that air can be introduced into the ink pack 32 at the time of ink ejection. This eliminates the need to press the ink pack 32 when discharging ink. Therefore, the posture of the ink pack 32 can be stabilized. Further, since the sealing member 51 is a film attached to the outer surface of the ink pack 32, the sealed state of the air introduction hole 50 can be released by a simple operation of peeling the film. Therefore, the operation of discharging the ink can be easily performed.

  In the present embodiment, the ink pack 32 includes the gap forming member 52 that forms a gap between the first side wall 33 provided with the air introduction hole 50 and the second side wall 34, so that the air introduction is performed. The hole 50 can be prevented from being closed by the second side wall 34. Therefore, air can be smoothly introduced into the ink pack 32 at the time of ink ejection. In addition, since the through holes 55 are provided in the gap forming member 52, the air introducing holes 50 are not blocked by the gap forming members 52, and the air introducing holes 50 are formed inside the ink pack 32 through the through holes 55. Can be formed to communicate with

  In the above embodiment, the gap forming member 52 is arranged at the position where the air introduction hole 50 is provided. However, the gap forming member 52 may be arranged at a position different from the position where the air introduction hole 50 is provided. . For example, if the gap forming member 52 is arranged near the air introduction hole 50, the presence of the gap formation member 52 causes the position between the first side wall 33 and the second side wall 34 at the position of the air introduction hole 50. A gap can be formed. Therefore, it is possible to prevent the air introduction hole 50 from being blocked by the second side wall portion 34. Further, the gap forming member 52 may be disposed between the air introduction hole 50 and the ink discharging section 31. In this case, since air is easily introduced, there is an advantage that the shape and posture of the ink pack 32 are easily stabilized.

(Modification of the gap forming member)
FIG. 7 is an explanatory diagram of the gap forming members of the first and second modifications. 7 (a1) and 7 (b1) show a gap forming member of Modification 1, FIG. 7 (a1) is a perspective view, and FIG. 7 (b1) is a sectional view. 7 (a2) and 7 (b2) show a gap forming member of Modification 2, FIG. 7 (a2) is a perspective view, and FIG. 7 (b2) is a cross-sectional view. In FIG. 7 (b1) and (b2), the illustration of the sealing member 51 is omitted.

  As shown in FIG. 7A1, the gap forming member 152 of the first modification includes a plate-like first arm 153 and a second arm 154, and a bent portion 155. The first arm 153 and the second arm 154 are connected via a bent portion 155, and a gap is formed between the first arm 153 and the second arm 154. A through hole 156 is formed in the first arm 153 of the gap forming member 152. As shown in FIG. 7 (b 1), the gap forming member 152 is arranged at a position where the through hole 156 overlaps with the air introduction hole 50. In this state, the first arm 153 supports the first side wall 33 from the inside, and the second arm 154 supports the second side wall 34 from the inside. Therefore, the first side wall 33 and the second side wall 34 are supported. A gap is formed between them. The air introduction hole 50 communicates with a gap between the first arm 153 and the second arm 154 via the through hole 156. In this manner, the gap forming member 152 of the first modification can form a state in which the air introduction hole 50 is not closed, as in the above-described embodiment. Therefore, air can be introduced from the air introduction hole 50 into the ink pack 32 through the gap between the first arm 153 and the second arm 154 and the through hole 156.

  As shown in FIG. 7A2, the gap forming member 252 of Modification 2 is a cylindrical member having both ends opened. A flat portion 253 is formed on the outer circumferential surface of the gap forming member 252 by flattening a part of the cylindrical surface in the circumferential direction. A through hole 254 is formed in the flat part 253. As shown in FIG. 7B 2, the gap forming member 252 is arranged at a position where the through hole 254 overlaps the air introduction hole 50. The air introduction hole 50 communicates with the internal space of the gap forming member 252 via the through hole 254. As described above, the gap forming member 252 of the second modification can form a state in which the air introduction hole 50 is not closed, as in the above-described embodiment. Therefore, air can be introduced from the air introduction hole 50 into the ink pack 32 through the internal space of the gap forming member 252 and the through hole 254.

(Ink ejection system to which the present invention is applied)
FIG. 8 is an explanatory diagram of the ink injection unit and the ink injection unit in the ink injection system to which the present invention is applied. FIG. 8A shows a mode in which the ink injection section and the ink ejection section are engaged at two locations, and FIG. 8B shows a mode in which the ink injection section and the ink ejection section are engaged at four locations. Hereinafter, only the points different from the ink ejection system 1 of the above embodiment will be described. As shown in FIG. 8A, the ink dispensing system 101 includes an ink tank 102 and an ink container 103 that stores ink for refilling the ink tank 102. The ink tank 102 is provided with an ink injection unit 121. On the other hand, the ink storage container 103 is provided with an ink discharge section 131 for pouring the ink stored therein to the outside.

  In the ink ejection system 101, an engagement portion 129 is formed in the ink injection portion 121. The engagement portions 129 are cutout portions formed in the ink injection portion 121, and are formed at two locations in the circumferential direction. On the other hand, a protrusion 137 that can be engaged with the engagement part 129 is formed on the ink ejection part 131. The protruding portions 137 protrude in the radial direction from the outer peripheral surface of the ink discharging portion 131, and are formed at two angular positions corresponding to the positions of the engaging portions 129. When the ink ejection section 131 of the third modification is inserted into the ink injection section 121, the two projections 137 are positioned by engaging with the engagement sections 129.

  As shown in FIG. 8B, the number of the engaging portions 129 and the projecting portions 137 may be four instead of two. Alternatively, another number may be used. In this manner, the ink ejection system 101 can engage the protrusion 137 with the engagement portion 129 formed on the ink injection portion 121, so that even if the ink pack 32 is pushed, the ink ejection portion 131 is shaken. Hateful. Therefore, it is possible to form a state in which the ink discharging section 131 is hard to fall off from the ink injection section 121, and the posture of the ink pack 32 can be stabilized. Therefore, the possibility that the ink leaks to the outside during ink injection can be reduced.

(Other embodiments)
In each of the above embodiments, the ink discharging portion 21 projects obliquely from the inclined surface of the ink tank 2. However, in the present invention, the ink discharging portion 21 projects upward from the horizontal surface provided in the ink tank 2. It can be applied even if it is a form that does.

DESCRIPTION OF SYMBOLS 1 ... Ink ejection system, 2 ... Ink tank, 3 ... Ink storage container, 4 ... Liquid ejecting device, 5 ... Inkjet printer, 6 ... Scanner unit, 21 ... Ink injection part, 21a ... Outer end, 21b ... Inner end Part, 22 ... case, 23 ... atmosphere opening part, 24 ... first wall, 25 ... second wall, 26 ... third wall, 27 ... fourth wall, 28 ... penetrating part, 31 ... ink ejection part, 31a ... Tip, 32 ... Ink pack, 32a ... First edge, 32b ... Second edge, 33 ... First side wall, 34 ... Second side wall, 35 ... Bottom, 36 ... Notch, 37 ... Protrusion, Reference numeral 41 denotes an opening / closing lid, 42 denotes a paper supply port, 43 denotes an operation panel, 44 denotes a discharge port, 45 denotes an opening / closing cover, 46 denotes a tank accommodating section, 47 denotes a window, 50 denotes an air introduction hole, and 51 denotes a sealing member. ... Gap forming member, 53 ... Disc part, 54 ... Leg part, 55 ... Penetration 101, an ink ejection system, 102, an ink tank, 103, an ink container, 121, an ink injection section, 121a, an outer end, 129, an engagement section, 131, an ink ejection section, 137, a projection, 152 ... gap forming member, 153 ... first arm portion, 154 ... second arm portion, 155 ... bent portion, 156 ... through hole, 252 ... gap forming member, 253 ... flat portion, 254 ... through hole, L1 ... central axis, L2: central axis, M1: upper limit mark, M2: lower limit mark, P: print medium

Claims (12)

A through portion for communicating the interior space and the outside of Lee Nkutanku, an outer end open to the outside, through the ink injection portion having an inner end, an opening into the interior space, with respect to the ink tank an ink container for injecting ink Te,
An ink pack capable of containing the ink,
An ink discharging unit for pouring the ink inside the ink pack to the outside,
At a position separated by a predetermined distance in the central axis direction of the ink discharging unit from the tip of the ink discharging unit, a protruding portion that protrudes from the outer peripheral surface of the ink discharging unit in a direction crossing the central axis, With
Distance to the tip of the ink spout portion from the projecting portion, said from the outer end of the ink injection portion to the inner end rather longer than the length,
The ink ejection section, when inserted into the ink injection section in a state where the central axis is inclined with respect to the central axis of the ink injection section, the protrusion contacts the outer end, and, A portion located between the tip and the protrusion is positioned in contact with the inner end,
Ink storage container. The ink pack includes:
A first edge provided with the ink ejection section;
A second edge opposite the first edge;
An air introduction hole provided at a position closer to the second edge than the ink ejection section;
A sealing member for sealing the air introduction hole,
The ink container according to claim 1. The ink pack includes:
A first side wall portion provided with the air introduction hole,
A second side wall facing the first side wall;
A gap forming member that forms a gap between the first side wall and the second side wall.
The ink container according to claim 2. A through-hole overlapping the air introduction hole is formed in the gap forming member,
The ink container according to claim 3. The sealing member is attached to an outer surface of the ink pack so as to seal the air introduction hole, and is made of a film that can be peeled from the outer surface.
The ink container according to claim 2. An ink tank having an ink injection unit for injecting ink into the inside,
For the ink tank, an ink container capable of injecting ink through the ink injection unit, and an ink ejection system,
The ink injection unit,
A penetrating portion that communicates the internal space of the ink tank with the outside, an outer end opening to the outside, and an inner end opening to the inner space;
The ink container,
An ink pack capable of containing the ink,
An ink discharging unit for pouring the ink inside the ink pack to the outside,
At a position distant by a predetermined distance in the central axis direction of the ink spout portion from the tip of the ink spout portion, and a protrusion protruding from an outer peripheral surface of the ink spout portion in a direction intersecting the central axis, equipped with a,
Distance to the tip of the ink spout portion from the projecting portion, said from the outer end of the ink injection portion to the inner end rather longer than the length,
The ink tank includes:
The ink injection unit has a cutout along a central axis direction of the ink injection unit,
The cutout portion is capable of engaging with a protruding portion of the ink container.
Ink dispense system.   An ink tank having an ink injection unit for injecting ink into the inside,
  For the ink tank, an ink container capable of injecting ink through the ink injection unit, and an ink ejection system,
  The ink injection unit,
  A penetrating portion for communicating the internal space of the ink tank with the outside, an outer end opening to the outside, and an inner end opening to the inner space;
  The ink container,
  An ink pack capable of containing the ink,
  An ink discharging unit for pouring the ink inside the ink pack to the outside,
  At a position separated by a predetermined distance in the direction of the central axis of the ink discharging unit from the tip of the ink discharging unit, a protruding portion that protrudes from the outer peripheral surface of the ink discharging unit in a direction crossing the central axis, With
  The distance from the protrusion to the tip of the ink ejection unit is longer than the length from the outer end to the inner end of the ink injection unit,
  The ink ejection section, when the central axis and the central axis of the ink injection section are inclined, when inserted into the ink injection section, the protrusion comes into contact with the outer end, and A portion located between the tip and the protrusion is positioned in contact with the inner end,
  Ink dispense system.   The ink pack includes:
  A first edge provided with the ink ejection section;
  A second edge opposite the first edge;
  An air introduction hole provided at a position closer to the second edge than the ink ejection section;
  A sealing member for sealing the air introduction hole,
  The ink dispensing system according to claim 6.   The ink pack includes:
  A first side wall portion provided with the air introduction hole,
  A second side wall facing the first side wall;
  A gap forming member that forms a gap between the first side wall and the second side wall.
  An ink dispensing system according to claim 8.   A through-hole overlapping the air introduction hole is formed in the gap forming member,
  The ink dispensing system according to claim 9.   The sealing member is attached to an outer surface of the ink pack so as to seal the air introduction hole, and is made of a film that can be peeled from the outer surface.
  An ink extraction system according to any one of claims 8 to 10. A through portion for communicating the interior space and the outside of Lee Nkutanku, an outer end open to the outside, through the ink injection portion having an inner end, an opening into the interior space, with respect to the ink tank an ink container for injecting ink Te,
An ink pack capable of containing the ink,
An ink discharging unit for pouring the ink inside the ink pack to the outside,
In the direction of the central axis of the ink spout portion from the tip of the ink injecting portion, at a position a predetermined distance away greater than the length from the outer end portion of the ink injecting portion to the inner end portion, the ink Note A projecting portion projecting from the outer peripheral surface of the projection portion in a direction intersecting with the central axis;
Air introduction holes provided in the ink pack,
A gap forming member that forms a gap inside the ink pack between the ink ejection section and the air introduction hole ,
Wherein air inlet holes are towards the second edge located opposite the first edge, wherein the ink spout portion is provided, that provided at a position closer than the ink spout portion,
Ink storage container.

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