JP6372085B2 - Liquid ejector - Google Patents

Description

The present invention relates to a liquid ejecting apparatus and the like.

  Conventionally, an inkjet printer is known as an example of a liquid ejecting apparatus. In an inkjet printer, printing on a print medium can be performed by ejecting ink, which is an example of a liquid, from a jet head onto a print medium such as print paper. Such a liquid ejecting apparatus is known to have a liquid supply apparatus that supplies ink stored in a tank, which is an example of a liquid storage unit, to an ejecting head (printing head) via a tube (hose). (For example, refer to Patent Document 1). Hereinafter, a configuration in which a liquid supply device is added to the liquid ejecting apparatus may be expressed as a liquid ejecting system.

JP 2012-20497 A

  In the above-mentioned Patent Document 1, in a tank having a liquid storage chamber capable of storing a liquid and an air release channel capable of introducing the atmosphere into the liquid storage portion, the liquid is released into the atmosphere even if the posture of the tank changes. A technique that can reduce the possibility of flowing out of the road to the outside is disclosed. However, Patent Document 1 does not disclose a technique that makes it difficult for liquid to flow out from the ejection head in a state where the liquid ejection apparatus to which the tank is connected is turned upside down.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  [Application Example 1] The print medium having a nozzle forming portion in which nozzles are formed, printing the liquid with the liquid by ejecting the liquid from the nozzle toward the print medium, and performing printing The liquid ejection in which the front end of the nozzle forming portion and the rear end of the nozzle forming portion are positioned along the discharge direction of the print medium, with the discharge port of the liquid ejecting apparatus discharged through the discharge port as the front side A liquid container for containing a liquid to be supplied to the apparatus, wherein the nozzle is oriented in the horizontal direction and the front end of the nozzle forming portion is located above the rear end. The liquid container is arranged such that the liquid level of the liquid stored in the liquid container is lower than the rear end of the nozzle forming portion.

  According to the liquid container of this application example, even if the liquid ejecting apparatus changes to the first posture, the liquid level of the liquid stored in the liquid container is lower than the nozzle forming portion, so the liquid in the vicinity of the nozzle Is easily suppressed from being pressurized by the liquid stored in the liquid container. Thereby, in the 1st attitude | position, even if it does not close the flow path of the liquid between a liquid container and a nozzle, possibility that a liquid will flow out from a nozzle can be reduced.

  Application Example 2 The above-described liquid container, including a liquid supply port for supplying the liquid stored in the liquid container to the liquid ejecting apparatus, wherein the nozzle faces in a horizontal direction, and In the second posture in which the front end of the nozzle forming portion is positioned below the rear end, the liquid level is higher than the rear end of the nozzle forming portion, and the liquid supply port is higher than the liquid level. A liquid container characterized by being arranged to be higher.

  In this application example, even if the liquid ejecting apparatus is changed to the second posture and the liquid level of the liquid stored in the liquid container is higher than the nozzle forming unit, the liquid supply port is stored in the liquid container. Since the liquid level is higher than the liquid level, the pressure of the liquid head contained in the liquid container can be easily shut off at the liquid supply port. For this reason, also in the 2nd attitude | position, even if it does not close the flow path of the liquid between a liquid container and a nozzle, possibility that a liquid will flow out from a nozzle can be reduced.

  [Application Example 3] The printing medium having a nozzle forming portion in which nozzles are formed, printing the liquid with the liquid by ejecting the liquid from the nozzle toward the printing medium, and performing printing. The liquid ejection in which the front end of the nozzle forming portion and the rear end of the nozzle forming portion are positioned along the discharge direction of the print medium, with the discharge port of the liquid ejecting apparatus discharged through the discharge port as the front side A liquid container capable of containing a liquid to be supplied to the apparatus, wherein the liquid container includes a first liquid container and a second liquid container, and the first liquid container And the second liquid storage section each have a liquid supply port for supplying the liquid stored therein to the liquid ejecting apparatus, the nozzle faces in the horizontal direction, and the nozzle forming section The front end is above the rear end In the first posture, the first liquid storage portion is disposed such that a liquid level of the liquid stored in the first liquid storage portion is lower than the rear end of the nozzle forming portion. And in the first posture, the second liquid storage section is configured such that the liquid level of the liquid stored in the second liquid storage section is higher than the rear end of the nozzle forming section, and In a second posture in which the liquid supply port is disposed so as to be higher than the liquid level, the nozzle faces in the horizontal direction, and the front end of the nozzle forming portion is located below the rear end. The second liquid storage portion is disposed such that the liquid level of the liquid stored in the second liquid storage portion is lower than the rear end of the nozzle forming portion, and in the second posture, The first liquid storage unit is the first liquid storage unit. Stowed liquid level of the liquid is higher than the rear end of the nozzle forming part and the liquid supply port is arranged to be higher than the liquid surface, the liquid container, characterized in that.

  According to the liquid container of this application example, even if the liquid ejecting apparatus changes to the first posture, the liquid level of the liquid stored in the first liquid storage unit is lower than the nozzle forming unit. It is easy to suppress the liquid in the vicinity from being pressurized by the liquid stored in the first liquid storage unit. In the first posture, even if the liquid level of the liquid stored in the second liquid storage unit is higher than the nozzle forming unit, the liquid supply port is higher than the liquid level of the liquid stored in the second liquid storage unit. Therefore, it is easy to shut off the pressure due to the water head of the liquid stored in the second liquid storage portion at the liquid supply port. Thereby, in the 1st attitude | position, even if it does not close the flow path of the liquid between a liquid container and a nozzle, possibility that a liquid will flow out from a nozzle can be reduced. Further, even when the liquid ejecting apparatus changes to the second posture, the liquid level of the liquid stored in the second liquid storage unit is lower than that of the nozzle forming unit, so that the liquid near the nozzle is stored in the second liquid storage unit. It is easy to suppress being pressurized by the liquid stored in the part. In the second posture, even if the liquid level of the liquid stored in the first liquid storage unit is higher than the nozzle formation unit, the liquid supply port is higher than the liquid level of the liquid stored in the first liquid storage unit. Therefore, it is easy to shut off the pressure due to the water head of the liquid stored in the first liquid storage portion at the liquid supply port. Thereby, in the 2nd attitude | position, even if it does not close the flow path of the liquid between a liquid container and a nozzle, possibility that a liquid will flow out from a nozzle can be reduced.

  Application Example 4 In the liquid container described above, the first liquid container and the second liquid container may include a region between the front end and the rear end of the nozzle forming unit. The liquid container, wherein the liquid container is arranged symmetrically in the front-rear direction with respect to a virtual region extending in a direction intersecting with the front-rear direction, which is a direction connecting the front end and the rear end.

  In this application example, the first liquid storage part and the second liquid storage part can be arranged side by side in the front-rear direction.

FIG. 2 is a perspective view showing a liquid ejection system in the present embodiment. FIG. 2 is a perspective view showing a liquid ejection system in the present embodiment. FIG. 2 is a perspective view showing a liquid ejection system in the present embodiment. FIG. 3 is a perspective view illustrating a mechanism unit of the printer according to the embodiment. FIG. 3 is a bottom view showing a print head in the present embodiment. The disassembled perspective view which shows the tank in this embodiment. The side view when the tank in this embodiment is seen from the sheet member side. The perspective view which shows the case in this embodiment. The perspective view which shows the case in this embodiment. Sectional drawing when the ink injection part in this embodiment, a supply port, and an air | atmosphere communication port are cut | disconnected by XZ plane. The side view when the tank in this embodiment is seen from the sheet member side. The side view when the tank in this embodiment is seen from the sheet member side. FIG. 2 is a front view illustrating a print head and a tank according to the present embodiment. FIG. 3 is a bottom view illustrating a print head and a tank according to the first embodiment. FIG. 3 is a bottom view illustrating a print head and a tank according to the first embodiment. FIG. 6 is a bottom view showing a print head and a tank in Embodiment 2. FIG. 6 is a bottom view showing a print head and a tank in Embodiment 2.

  Embodiments will be described with reference to the drawings, taking as an example a liquid ejecting system including an ink jet printer (hereinafter referred to as a printer) which is an example of a liquid ejecting apparatus. In addition, in each drawing, in order to make each structure the size which can be recognized, the structure and the scale of a member may differ.

  As illustrated in FIG. 1, the liquid ejecting system 1 according to the present embodiment includes a printer 3 that is an example of a liquid ejecting apparatus, and a tank unit 5. The printer 3 has a first case 6. The first case 6 constitutes the outer shell of the printer 3. The tank unit 5 includes a second case 7 and a plurality (two or more) of tanks 9. The first case 6 and the second case 7 constitute an outer shell of the liquid ejecting system 1. The tank 9 is an example of a liquid storage container. The liquid ejecting system 1 can perform printing on a printing medium P such as printing paper with ink that is an example of a liquid.

  In FIG. 1, XYZ axes, which are coordinate axes orthogonal to each other, are attached. The XYZ axes are also attached to the drawings shown thereafter as necessary. In each of the XYZ axes, the direction of the arrow indicates the + direction (positive direction), and the direction opposite to the direction of the arrow indicates the − direction (negative direction). In a state where the liquid ejection system 1 is used, the liquid ejection system 1 is disposed on a horizontal plane defined by the X axis and the Y axis. In the usage state of the liquid ejecting system 1, the Z axis is an axis orthogonal to a horizontal plane, and the −Z axis direction is a vertically downward direction.

  The first case 6 houses the mechanism unit 10 (FIG. 4) of the printer 3. The mechanism unit 10 is a mechanism part that executes a printing operation in the printer 3. Details of the mechanism unit 10 will be described later. The plurality of tanks 9 are accommodated in the second case 7 as shown in FIG. 1, and each accommodates ink to be used for printing. In the present embodiment, four tanks 9 are provided. In the four tanks 9, the type of ink differs for each tank 9. In the present embodiment, four types of ink, black, yellow, magenta, and cyan, are employed. A tank 9 for storing black ink, a tank 9 for storing yellow ink, a tank 9 for storing magenta ink, and a tank 9 for storing cyan ink are provided one by one. . In the liquid ejection system 1, a plurality of tanks 9 are provided outside the first case 6. For this reason, in the liquid ejection system 1, the plurality of tanks 9 are not built in the first case 6 that covers the mechanism unit 10.

  The printer 3 is provided with a paper discharge unit 11 that is an example of a discharge port. In the printer 3, the print medium P is discharged from the paper discharge unit 11. In the printer 3, the surface on which the paper discharge unit 11 is provided is a front surface 13. In addition, the printer 3 has an operation panel 17 on an upper surface 15 that intersects the front surface 13. The operation panel 17 is provided with a power button 18A and other operation buttons 18B. The tank unit 5 is provided in a side portion 19 that intersects the front surface 13 and the upper surface 15 in the first case 6. The second case 7 is provided with a window portion 21. The window portion 21 is provided on the side portion 27 that intersects the front surface 23 and the upper surface 25 in the second case 7. The window part 21 has light transmittance. And the four tanks 9 mentioned above are provided in the position which overlaps with the window part 21. As shown in FIG. For this reason, an operator who uses the liquid ejection system 1 can visually recognize the four tanks 9 through the window portion 21.

  In the present embodiment, at least a part of the portion facing each window 9 of the tank 9 has light transmittance. The ink in the tank 9 can be visually recognized from the portion of each tank 9 having light transmittance. Therefore, the operator can visually recognize the amount of ink in each tank 9 by visually recognizing the four tanks 9 through the window portion 21. That is, in the tank 9, at least a part of the portion facing the window portion 21 can be used as a visual recognition portion that can visually recognize the amount of ink. The first case 6 and the second case 7 are configured separately from each other. For this reason, in this embodiment, as shown in FIG. 2, the second case 7 can be separated from the first case 6. The second case 7 is coupled to the first case 6 by a mounting screw 31. Further, as shown in FIG. 2, the second case 7 covers at least a part of the four tanks 9, for example, the front surface, the upper surface, and the side surface. Each tank 9 is provided with an upper limit mark 28 indicating the upper limit of the amount of ink and a lower limit mark 29 indicating the lower limit of the amount of ink at a portion facing the window portion 21. The operator can grasp the amount of ink in each tank 9 using the upper limit mark 28 and the lower limit mark 29 as a mark.

  The tank unit 5 has a support frame 32. The four tanks 9 are supported by the support frame 32. The support frame 32 is configured separately from the first case 6. For this reason, in this embodiment, as shown in FIG. 3, the support frame 32 can be separated from the first case 6. The support frame 32 is coupled to the first case 6 by mounting screws 33. Thus, in this embodiment, the tank unit 5 (FIG. 1) is attached to the outside of the first case 6.

  The printer 3 includes a printing unit 35 and a supply tube 36 as shown in FIG. 4 which is a perspective view showing the mechanism unit 10. The printing unit 35 includes a carriage 37, a print head 38, and four relay units 39. The print head 38 and the four relay units 39 are mounted on the carriage 37. The supply tube 36 has flexibility and is provided between the tank 9 and the relay unit 39. The ink in the tank 9 is sent to the relay unit 39 via the supply tube 36. The relay unit 39 relays the ink supplied from the tank 9 via the supply tube 36 to the print head 38. The print head 38 ejects the supplied ink as ink droplets.

  Here, details of the print head 38 will be described. The print head 38 has a nozzle surface 41 as shown in FIG. 5 which is a bottom view. A plurality of nozzles 42 that eject ink droplets are formed on the nozzle surface 41. In FIG. 5, the nozzles 42 are exaggerated and the number of the nozzles 42 is reduced in order to clearly show the nozzles 42. In the print head 38, the plurality of nozzles 42 constitutes eight nozzle rows 43 arranged along the X axis. The eight nozzle rows 43 are arranged along the Y axis with a gap therebetween. In each nozzle row 43, the plurality of nozzles 42 are formed at a predetermined nozzle interval L along the X axis. In the following, when each of the eight nozzle rows 43 is identified, the eight nozzle rows 43 are respectively a nozzle row 43A, a nozzle row 43B, a nozzle row 43C, a nozzle row 43D, a nozzle row 43E, and a nozzle row. 43F, nozzle row 43G, and nozzle row 43H.

  In the print head 38, the nozzle row 43A and the nozzle row 43B are shifted from each other by a distance of L / 2 along the X axis. The nozzle row 43C and the nozzle row 43D are also shifted from each other by a distance of L / 2 along the X axis. Similarly, the nozzle row 43E and the nozzle row 43F are also shifted by a distance of L / 2 along the X axis, and the nozzle row 43G and the nozzle row 43H are also shifted by a distance of L / 2 along the X axis. ing. In the print head 38, the eight nozzle rows 43 are divided for each ink type. In the present embodiment, the nozzles 42 belonging to the nozzle row 43A and the nozzle row 43B eject black (K) ink as ink droplets. The nozzles 42 belonging to the nozzle row 43C and the nozzle row 43D eject cyan (C) ink as ink droplets. The nozzles 42 belonging to the nozzle row 43E and the nozzle row 43F eject magenta (M) ink as ink droplets. The nozzles 42 belonging to the nozzle row 43G and the nozzle row 43H eject yellow (Y) ink as ink droplets.

  On the nozzle surface 41, the plurality of nozzles 42 are formed in the nozzle forming portion 44. The nozzle forming unit 44 is an area including all the nozzles 42 that discharge ink droplets among the plurality of nozzles 42. The nozzle forming portion 44 is an area surrounded by connecting the outer edges of a plurality of nozzles 42 positioned at the outermost edge of the included nozzles 42 with the shortest distance. The nozzle formation part 44 is prescribed | regulated by the some nozzle 42 located in the outermost edge among the nozzles 42 to include. The plurality of nozzles 42 that define the nozzle forming portion 44 do not include those that do not communicate with the supply tube 36. In the present embodiment, in the liquid ejection system 1 shown in FIG. 1, the front side 13 on which the paper discharge unit 11 is provided is defined as the front side, and the side opposite to the front side 13 is defined as the rear side. In the present embodiment, in the bottom view of the nozzle surface 41 (FIG. 5), the portion of the nozzle forming portion 44 that is located closest to the Y-axis direction, that is, the portion that is located on the front side of the liquid ejection system 1 is the nozzle formation. It is defined as the front end 45 of the part 44. Further, a portion of the nozzle forming portion 44 that is located closest to the −Y-axis direction is defined as the rear end 46 of the nozzle forming portion 44.

  Moreover, the printer 3 shown has a medium conveyance mechanism (not shown) and a head conveyance mechanism (not shown) as shown in FIG. The medium transport mechanism transports the print medium P along the Y-axis direction by driving the transport roller 51 (FIG. 4) with power from a motor (not shown). The head conveyance mechanism conveys the carriage 37 along the X-axis direction by transmitting power from the motor 53 to the carriage 37 via the timing belt 55. The print head 38 is mounted on the carriage 37. Therefore, the print head 38 can be transported in the X-axis direction via the carriage 37 by the head transport mechanism. The print head 38 is supported by the carriage 37 so as to face the print medium P. Printing is performed on the print medium P by ejecting ink from the print head 38 while changing the relative position of the print head 38 with respect to the print medium P by the medium transport mechanism and the head transport mechanism.

  The tank 9 will be described. As illustrated in FIG. 6, the tank 9 includes a case 61 that is an example of a tank body and a sheet member 63. The case 61 is made of, for example, a synthetic resin such as nylon or polypropylene. The sheet member 63 is formed into a film shape with a synthetic resin (for example, nylon, polypropylene, etc.) and has flexibility. In the present embodiment, the sheet member 63 is light transmissive. The tank 9 has a configuration in which a case 61 and a sheet member 63 are joined. The case 61 is provided with a joint portion 64. In FIG. 6, the joint portion 64 is hatched for easy understanding of the configuration. The sheet member 63 is joined to the joining portion 64 of the case 61. In the present embodiment, the case 61 and the sheet member 63 are joined by welding.

  As shown in FIG. 7, the tank 9 has a storage portion 65 and a communication portion 67. The communication part 67 has an atmosphere chamber 68 and a communication path 73. In the tank 9, ink is stored in the storage portion 65. 7 shows a state in which the tank 9 is viewed from the sheet member 63 side, and the case 61 is illustrated over the sheet member 63. The accommodating portion 65, the atmospheric chamber 68, and the communication path 73 are separated from each other by the joint portion 64. The case 61 includes a foundation wall 80, a first wall 81, a second wall 82, a third wall 83, a fourth wall 84, a fifth wall 85, a sixth wall 86, and a seventh wall 87. ,have. On the opposite side of the second wall 82 from the accommodating portion 65 side, the atmospheric chamber 68 and a part of the communication path 73 are arranged. When the base wall 80 is viewed in plan from the sheet member 63 side, the accommodating portion 65 is surrounded by the first wall 81, the second wall 82, the third wall 83, and the fourth wall 84. The fourth wall 84 faces the window portion 21 of the second case 7. That is, in the tank 9, the fourth wall 84 includes a portion having light permeability.

  Further, when the base wall 80 is viewed from the side of the sheet member 63, the atmospheric chamber 68 is surrounded by the second wall 82, the fifth wall 85, the sixth wall 86, and the seventh wall 87. . Note that the base wall 80 of the accommodating portion 65 and the base wall 80 of the atmospheric chamber 68 are the same wall. That is, in the present embodiment, the housing portion 65 and the atmospheric chamber 68 share the foundation wall 80. The first wall 81, the second wall 82, the third wall 83, and the fourth wall 84 intersect the foundation wall 80, respectively, as shown in FIG. The second wall 82 is located closer to the Z-axis direction than the first wall 81. The first wall 81 and the second wall 82 face each other with the foundation wall 80 interposed therebetween. The fourth wall 84 is located closer to the X axis direction than the third wall 83. The third wall 83 and the fourth wall 84 face each other with the foundation wall 80 interposed therebetween. The third wall 83 intersects each of the first wall 81 and the second wall 82. The fourth wall 84 also intersects each of the first wall 81 and the second wall 82.

  The first wall 81, the second wall 82, the third wall 83, and the fourth wall 84 protrude from the foundation wall 80 in the −Y axis direction. Accordingly, the first wall 81, the second wall 82, the third wall 83, and the fourth wall 84 are configured by the base wall 80 as the main wall and extending from the main wall in the −Y-axis direction. . The recess 91 is configured in a direction that becomes concave in the Y-axis direction. The recess 91 opens toward the −Y axis direction, that is, toward the sheet member 63 (FIG. 6). In other words, the concave portion 91 is provided in a direction that is concave toward the Y-axis direction, that is, toward the side opposite to the sheet member 63 (FIG. 6) side. When the sheet member 63 is joined to the case 61, the concave portion 91 is closed by the sheet member 63, and the accommodating portion 65 is configured. The foundation wall 80 and the first wall 81 to the seventh wall 87 are not limited to flat walls, and may include irregularities.

  As shown in FIG. 7, the fifth wall 85 protrudes from the second wall 82 to the side opposite to the first wall 81 side of the second wall 82, that is, toward the + Z axial direction side of the second wall 82. . The sixth wall 86 protrudes from the second wall 82 toward the opposite side of the second wall 82 to the first wall 81 side, that is, toward the + Z axial direction side of the second wall 82. The sixth wall 86 is located closer to the X axis direction than the fifth wall 85. The fifth wall 85 and the sixth wall 86 are provided at positions facing each other across the atmosphere chamber 68. The seventh wall 87 is located on the Z axis direction side with respect to the second wall 82. The second wall 82 and the seventh wall 87 are provided at positions facing each other across the atmospheric chamber 68. The fifth wall 85 intersects each of the second wall 82 and the seventh wall 87. The sixth wall 86 also intersects each of the second wall 82 and the seventh wall 87.

  As shown in FIG. 8, the fifth wall 85, the sixth wall 86, and the seventh wall 87 protrude from the foundation wall 80 in the −Y axis direction. Accordingly, the second wall 82, the fifth wall 85, the sixth wall 86, and the seventh wall 87 are configured by the second wall 82 extending from the main wall in the −Y-axis direction with the base wall 80 as the main wall. . The concave portion 99 is configured to be concave toward the Y-axis direction. The concave portion 99 opens in the −Y axis direction, that is, toward the sheet member 63 (FIG. 6). In other words, the concave portion 99 is provided in a direction that is concave toward the Y-axis direction, that is, toward the side opposite to the sheet member 63 (FIG. 6) side. When the sheet member 63 is joined to the case 61, the recess 99 is closed by the sheet member 63, and the atmospheric chamber 68 is configured. In addition, the protrusion amount from the base wall 80 of the 1st wall 81-the 7th wall 87 is set to the mutually same protrusion amount.

  The third wall 83 and the fifth wall 85 have a step. The third wall 83 is located closer to the fourth wall 84 than the fifth wall 85, that is, closer to the X-axis direction than the fifth wall 85. Further, the fourth wall 84 and the sixth wall 86 have a step. The sixth wall 86 is located on the third wall 83 side with respect to the fourth wall 84, that is, on the −X axis direction side with respect to the fourth wall 84. The ink injection portion 101 is provided between the fourth wall 84 and the sixth wall 86 in a state in which the base wall 80 is viewed in plan from the sheet member 63 side. The ink injection unit 101 is provided on the second wall 82.

  As shown in FIG. 8, the case 61 is provided with an overhang portion 105. The communication path 73 is provided in the overhang portion 105. The projecting portion 105 projects from the second wall 82 toward the Z-axis direction along the edge of the opening of the recess 91 in the region of the second wall 82 closer to the X-axis direction than the sixth wall 86. Have The part 105 </ b> A protrudes from the sixth wall 86 toward the X-axis direction along the edge of the opening of the recess 99 in the sixth wall 86. The overhanging portion 105 has a portion 105B that protrudes from the seventh wall 87 toward the Z-axis direction. The overhanging portion 105 has a portion 105 </ b> C overhanging from the fifth wall 85 toward the −X axis direction side along the edge of the opening of the recess 99 in the fifth wall 85. The overhanging portion 105 has a portion 105 </ b> D overhanging from the third wall 83 toward the −X axial direction side along the edge of the opening of the recess 91 in the third wall 83. The communication path 73 is configured as a groove 108 provided in the projecting portion 105 in a direction that is concave toward the side opposite to the sheet member 63 (FIG. 6) side.

  Here, as shown in FIG. 8, a recess 109 is provided in the recess 91. The recess 109 is surrounded by the eighth wall 111, the ninth wall 112, the tenth wall 113, and the fourth wall 84. The concave portion 109 is provided from the first wall 81 toward the side opposite to the second wall 82 side of the first wall 81, that is, in a direction that is concave from the first wall 81 toward the −Z axial direction side. . The eighth wall 111 and the ninth wall 112 are respectively provided on the first wall 81, and are directed from the first wall 81 toward the side opposite to the second wall 82 side of the first wall 81, that is, the first wall. Projecting from 81 toward the −Z-axis direction.

  The eighth wall 111 is located between the fourth wall 84 and the third wall 83 and faces the fourth wall 84 with the tenth wall 113 interposed therebetween. The ninth wall 112 is located between the base wall 80 and the sheet member 63 (FIG. 6), and faces the sheet member 63 with the tenth wall 113 interposed therebetween. The tenth wall 113 is located on the opposite side of the first wall 81 from the second wall 82 side, that is, on the −Z axis direction side of the first wall 81. The tenth wall 113 faces the second wall 82. The eighth wall 111 intersects the first wall 81, the ninth wall 112, and the tenth wall 113. The ninth wall 112 intersects the first wall 81, the fourth wall 84, and the tenth wall 113. The tenth wall 113 intersects the fourth wall 84.

  As shown in FIG. 8, the eighth wall 111, the ninth wall 112, the tenth wall 113, and the fourth wall 84 that surround the recess 109 constitute a supply unit 114. The supply unit 114 is provided with a connection unit 115. The connection part 115 is provided on the eighth wall 111. The connecting portion 115 is provided on the opposite side of the eighth wall 111 from the concave portion 109 side. The connecting portion 115 protrudes from the eighth wall 111 toward the opposite side to the concave portion 109 side, that is, from the eighth wall 111 toward the third wall 83 side. As shown in FIG. 9, the connecting portion 115 is formed in a cylindrical shape. A supply port 116 is formed in the connection portion 115. The supply port 116 is an opening formed in the connection portion 115 and is an outlet for ink from the tank 9. A supply tube 36 (FIG. 4) is connected to the connection portion 115. The ink stored in the tank 9 is sent to the supply tube 36 from the connection portion 115 through the supply port 116. The ink delivered to the supply tube 36 is guided to the print head 38 by the supply tube 36.

  As shown in FIG. 8, the seventh wall 87 is provided with an air communication port 118. The air communication port 118 protrudes from the seventh wall 87 to the side opposite to the second wall 82 side of the seventh wall 87, that is, the Z-axis direction side of the seventh wall 87. The air communication port 118 is provided at a position overlapping the concave portion 99 when the seventh wall 87 is viewed in plan, that is, when the seventh wall 87 is viewed in plan on the XY plane. The air communication port 118 communicates the outside of the case 61 and the inside of the recess 99. The atmosphere communication port 118 is an atmosphere passage through which the atmosphere outside the case 61 can be introduced into the recess 99. In the case 61, the joint portion 64 is provided along the contours of the recess 91, the recess 99, the recess 109, and the communication path 73.

  As shown in FIG. 6, the sheet member 63 faces the base wall 80 with the first wall 81 to the seventh wall 87 interposed therebetween. The sheet member 63 has a size that covers the concave portion 91, the concave portion 99, the concave portion 109, and the overhang portion 105 (FIG. 8) in plan view. The sheet member 63 is welded to the joint portion 64. Thereby, the concave portion 91, the concave portion 99, the concave portion 109, and the communication path 73 are sealed by the sheet member 63. For this reason, the sheet member 63 can also be regarded as a lid for the case 61.

  As shown in FIG. 7, the communication path 73 has a communication port 121 and a communication port 122. The communication port 121 is an opening that opens toward the inside of the atmospheric chamber 68. The communication port 122 is an opening that opens toward the inside of the housing portion 65. The atmospheric chamber 68 communicates from the communication port 121 via the communication path 73 to the housing portion 65 through the communication port 122. As described above, the accommodating portion 65 communicates with the outside of the tank 9 through the communication path 73, the atmospheric chamber 68, and the atmospheric communication port 118. That is, the communication part 67 communicates between the atmosphere communication port 118 and the accommodating part 65. The atmosphere that has flowed into the atmosphere chamber 68 from the atmosphere communication port 118 flows into the accommodating portion 65 via the communication path 73.

  The ink injection unit 101 is provided on the second wall 82. As shown in FIG. 8, the ink injection portion 101 is provided in a recess 131 surrounded by the sixth wall 86, the overhang portion 105, the fourth wall 84, and the foundation wall 80. As described above, the overhang portion 105 protrudes from the second wall 82 to the seventh wall 87 side. Further, the sixth wall 86 also protrudes closer to the seventh wall 87 than the second wall 82. Similarly, in the present embodiment, the base wall 80 and the fourth wall 84 also protrude from the second wall 82 toward the seventh wall 87 side. The overhanging portion 105 intersects both the sixth wall 86 and the fourth wall 84. Further, the foundation wall 80 intersects both the fourth wall 84 and the sixth wall 86. Therefore, a region of the second wall 82 that is closer to the fourth wall 84 than the sixth wall 86 forms a recess 131 surrounded by the sixth wall 86, the overhanging portion 105, the fourth wall 84, and the foundation wall 80. doing. The recess 131 is provided in a direction that becomes concave from the second wall 82 side toward the first wall 81 side.

  With the above configuration, the ink injection portion 101 is surrounded by the sixth wall 86, the overhang portion 105, the fourth wall 84, and the foundation wall 80. In other words, the ink injection portion 101 is provided in a region surrounded by the sixth wall 86, the overhang portion 105, the fourth wall 84, and the base wall 80 in the second wall 82. And the recessed part 131 has a function of an ink receiving part. The ink receiving part can receive, for example, ink overflowing from the ink injection part 101 or ink that has dripped down during injection. Thus, the recess 131 functions as an ink receiving portion that receives ink.

  The ink injection unit 101 includes an opening 132 and a side wall 133 as shown in FIG. 10 which is a cross-sectional view when the ink injection unit 101, the supply port 116, and the atmosphere communication port 118 are cut along the XZ plane. Yes. The opening 132 is a through hole provided in the second wall 82. The opening 132 is also an intersecting portion where the ink injection portion 101 and the concave portion 91 (accommodating portion 65) intersect. As a configuration of the ink injection unit 101, a configuration in which the side wall 133 protrudes to the inside of the recess 91 (accommodating unit 65) may be employed. Even in the configuration in which the side wall 133 protrudes inside the concave portion 91 (accommodating portion 65), the intersecting portion where the ink injection portion 101 and the concave portion 91 (accommodating portion 65) intersect is defined as the opening 132. The recess 91 communicates with the outside of the recess 91 through an opening 132 that is a through hole. The side wall 133 is provided on the opposite side of the second wall 82 to the first wall 81 side, surrounds the periphery of the opening 132, and forms an ink injection path. The side wall 133 protrudes from the second wall 82 toward the side opposite to the first wall 81 side. In the present embodiment, the side wall 133 protrudes on the side opposite to the first wall 81 side from each of the foundation wall 80 and the fourth wall 84. The side wall 133 can prevent the ink accumulated in the recess 131 from flowing into the opening 132.

  In the tank 9, the ink 141 is stored in the storage portion 65 as shown in FIG. 11 which is a side view when the tank 9 is viewed from the sheet member 63 side. In FIG. 11, the sheet member 63 is not shown and the joint portion 64 is hatched for easy understanding of the configuration. The ink 141 in the storage unit 65 is supplied to the print head 38 from a supply port 116 (FIG. 10) formed in the connection unit 115. In the present embodiment, in a state where the liquid ejecting system 1 is used for printing, the supply tube 36 is connected to the supply port 116, and the cap 143 is connected to the ink injection unit 101. The ink 141 in the container 65 reaches the print head 38 from the supply port 116 by sucking the supply tube 36 through the relay unit 39.

  Accompanying printing by the print head 38, the ink 141 in the container 65 is sent to the print head 38 side. For this reason, the pressure in the accommodating part 65 becomes lower than atmospheric pressure with printing by the print head 38. When the pressure in the accommodating portion 65 becomes lower than the atmospheric pressure, the atmosphere in the atmospheric chamber 68 flows into the accommodating portion 65 through the communication path 73. Thereby, the pressure in the accommodating part 65 is easy to be kept at atmospheric pressure. As described above, the ink 141 in the tank 9 is supplied to the print head 38. When the ink 141 in the storage unit 65 in the tank 9 is consumed and the remaining amount of the ink 141 is reduced, the operator can refill the storage unit 65 with new ink from the ink injection unit 101.

  As shown in FIG. 12, the communication path 73 is divided into a first path 151, a second path 152, a third path 153, a fourth path 154, a fifth path 155, and a sixth path 156. Can be done. The first passage 151 starts from the communication port 121 and extends toward the fourth wall 84 along the second wall 82, that is, along the X-axis direction. The first passage 151 extends from the communication port 121 to the reversing unit 161. The reversing unit 161 is a part where the direction of the flow path in the communication path 73 is reversed. In the reversing unit 161, the direction of the flow path is reversed from the X-axis direction to the -X-axis direction. In the atmosphere path from the atmosphere communication port 118 to the accommodating portion 65, the atmosphere communication port 118 side is the upstream side, and the communication port 122 side is the downstream side.

  The second passage 152 faces the sixth wall 86 from the reversing portion 161 along the extending direction of the first passage 151, that is, along the −X axis direction. The second passage 152 extends from the reversing portion 161 to the bent portion 162. The bent portion 162 is a portion where the direction of the flow path in the communication path 73 is bent. In the bent portion 162, the direction of the flow path is bent from the −X axis direction to the Z axis direction. The third passage 153 extends from the bent portion 162 along the sixth wall 86, that is, along the Z-axis direction toward the seventh wall 87. The third passage 153 extends from the bent portion 162 to the bent portion 163. The bent portion 163 is a portion where the direction of the flow path in the communication path 73 is bent. In the bent portion 163, the direction of the flow path is bent from the Z-axis direction to the -X-axis direction.

  The fourth passage 154 extends from the bent portion 163 along the seventh wall 87, that is, along the −X axis direction toward the fifth wall 85. The fourth passage 154 is located on the Z-axis direction side (upward) from the atmospheric chamber 68. The fourth passage 154 extends from the bent portion 163 to the bent portion 164. The bent portion 164 is a portion where the direction of the flow path in the communication path 73 is bent. In the bent portion 164, the direction of the flow path is bent from the −X axis direction to the −Z axis direction. The fifth passage 155 is directed from the bent portion 164 along the fifth wall 85, that is, along the −Z axis direction toward the first wall 81. The fifth passage 155 extends from the bent portion 164 to the reversing portion 165.

  As described above, the fourth passage 154 is located above the atmospheric chamber 68. That is, a part of the communication path 73 is located above the atmosphere chamber 68. According to this configuration, the ink that has flowed into the communication path 73 from the storage portion 65 is less likely to rise above the atmospheric chamber 68 due to the action of gravity. For this reason, the ink that has flowed into the communication path 73 from the storage portion 65 is unlikely to reach the atmosphere chamber 68. As a result, it is easy to suppress the ink that has flowed into the communication path 73 from the storage portion 65 from leaking out of the tank 9.

  Further, in the tank 9, the third passage 153 and the fifth passage 155 are located on opposite sides of the atmospheric chamber 68. According to this configuration, the path of the communication path 73 can be lengthened by forming the communication path 73 so as to surround the atmosphere chamber 68 using the space around the atmosphere chamber 68. Increasing the length of the communication path 73 makes it difficult to evaporate the liquid component of the ink in the storage section 65, and makes it difficult for ink flowing from the storage section 65 into the communication path 73 to reach the atmosphere chamber 68. It is preferable from the viewpoint.

  The reversing unit 165 is a portion where the direction of the flow path in the communication path 73 is reversed. In the reversing unit 165, the direction of the flow path is reversed from the −Z axis direction to the + Z axis direction. The sixth passage 156 is directed from the inversion portion 165 along the third wall 83, that is, along the Z-axis direction toward the second wall 82. The sixth passage 156 extends from the reversing portion 165 to the communication port 122 via the bent portion 166. The bent portion 166 is a portion where the direction of the flow path in the communication path 73 is bent. The communication path 73 communicates with the interior of the accommodating portion 65 through the communication port 122 after the direction of the flow path is bent from the + Z-axis direction to the X-axis direction at the bent portion 166.

  In the present embodiment, the nozzle surface 41 of the print head 38 in the posture in use (referred to as “use posture”) in which the liquid ejecting system 1 is placed along the horizontal plane has an upper limit mark of the tank 9 as shown in FIG. It is located above 28. For this reason, if the amount of ink in the tank 9 does not exceed the upper limit, the ink liquid level 171 in the tank 9 is positioned below the nozzle surface 41. For this reason, the water head in the tank 9 is lower than the water head in the print head 38. Thereby, it is easy to suppress the ink in the vicinity of the nozzle 42 (FIG. 5) from being pressurized by the ink stored in the tank 9. As a result, the outflow of ink from the nozzle 42 can be suppressed. Further, in the present embodiment, the nozzle surface 41 is located above the inner wall 82A of the second wall 82. For this reason, even if ink exceeds the upper limit mark 28 and is injected into the tank 9, the ink liquid level 171 is positioned below the nozzle surface 41. Thereby, it is possible to further suppress the outflow of ink from the nozzle 42.

  An example of the position of the tank 9 relative to the print head 38 will be described. Here, an example of the position of the tank 9 along the Y axis with respect to the print head 38 will be described.

Example 1
In the first embodiment, in the first posture in which the front surface 13 of the liquid ejecting system 1 shown in FIG. 1 is directed vertically upward, the ink liquid level 171 in the tank 9 is the nozzle surface 41 as shown in FIG. Four tanks 9 are arranged so as to be lower than the rear end 46 in the nozzle forming portion 44. In the first posture, the Y-axis direction is a vertically upward direction, and the −Y-axis direction is a vertically downward direction. In this first posture, the plurality of nozzles 42 shown in FIG. 5 face the horizontal direction, and the front end 45 of the nozzle forming portion 44 is positioned above the rear end 46.

  In the first embodiment, since the tank 9 is arranged so that the ink level 171 in the tank 9 is lower than the rear end 46 of the nozzle forming portion 44 in the first posture, the ink level 171 is set. Is positioned below the plurality of nozzles 42 (FIG. 5). For this reason, the water head in the tank 9 is lower than the water head in the print head 38. Thereby, it is easy to suppress the ink near the nozzle 42 from being pressurized by the ink stored in the tank 9. As a result, the outflow of ink from the nozzle 42 can be suppressed. Thereby, in the first posture, it is possible to reduce the possibility of ink flowing out from the nozzles 42 without closing the ink flow path between the tank 9 and the print head 38.

  Further, in the first embodiment, in the second posture in which the front surface 13 of the liquid ejecting system 1 shown in FIG. 1 is directed vertically downward, as shown in FIG. 15, the liquid surface 171 of the ink in the tank 9 is the nozzle surface. The tank 9 is arranged at a position higher than the rear end 46 among the nozzle forming portions 44 of 41. Further, in the second posture, the tank 9 is arranged so that the connecting portion 115 of the tank 9 is higher than the liquid level 171. In the second posture, the −Y axis direction is a vertically upward direction, and the Y axis direction is a vertically downward direction. In the second posture, the plurality of nozzles 42 shown in FIG. 5 are oriented in the horizontal direction, and the front end 45 of the nozzle forming portion 44 is positioned below the rear end 46.

  In the first embodiment, even if the liquid level 171 is higher than the nozzle forming portion 44 in the second posture, the connecting portion 115 of the tank 9 is higher than the liquid level 171. In other words, in the first embodiment, the supply port 116 (FIG. 9) of the tank 9 becomes higher than the liquid level 171 even if the liquid level 171 becomes higher than the nozzle forming portion 44 in the second posture. Thereby, the pressure due to the water head of the ink stored in the tank 9 can be easily blocked by the supply port 116. For this reason, it is easy to suppress that the ink near the nozzle 42 is pressurized by the ink stored in the tank 9. As a result, the outflow of ink from the nozzle 42 can be suppressed. Therefore, in the first embodiment, even in the second posture, it is possible to reduce the possibility of ink flowing out from the nozzles 42 without closing the ink flow path between the tank 9 and the print head 38.

  In the first embodiment, the four tanks 9 constituting the tank unit 5 correspond to the liquid container. In the first embodiment, four tanks 9 constituting the tank unit 5 are provided independently of each other. However, the configuration of the tank unit 5 is not limited to this. As a configuration of the tank unit 5, for example, a configuration in which four tanks 9 constituting the tank unit 5 are integrated may be employed. As a configuration in which the four tanks 9 are integrated, for example, a configuration in which the four tanks 9 are connected (coupled) to each other can be adopted. In addition, as a configuration in which the four tanks 9 are integrated, for example, a configuration in which the four tanks 9 are integrally formed by integral molding or the like and the interior is divided into four chambers may be employed. In this case, each of the four rooms configured by partitioning the interior corresponds to the liquid container. Further, the number of liquid containers and liquid containers may be plural (two or more) or one, respectively.

(Example 2)
In the second embodiment, the four tanks 9 are divided into a first group 173 and a second group 174 as shown in FIG. In the second embodiment, two tanks 9 of the four tanks 9, the tank 9 </ b> A and the tank 9 </ b> B, belong to the first group 173. Of the four tanks 9, the two tanks 9, the tank 9 </ b> C and the tank 9 </ b> D, belong to the second group 174. In the second embodiment, in the first posture, the tank 9A and the tank 9A are arranged so that the ink liquid level 171 in the tank 9 belonging to the first group 173 is lower than the rear end 46 of the nozzle forming portion 44 of the nozzle surface 41. A tank 9B is arranged. In the first posture, the tank 9 </ b> C and the tank 9 </ b> D are arranged at a position where the ink liquid level 171 in the tank 9 belonging to the second group 174 is higher than the front end 45 of the nozzle forming portion 44. Further, in the first posture, the tank 9C and the tank 9D are arranged so that the connecting portion 115 of the tank 9 belonging to the second group 174 is higher than the liquid level 171.

  In the second embodiment, in the first posture, the tank 9A and the tank 9B are arranged so that the ink liquid level 171 in the tank 9 belonging to the first group 173 is lower than the rear end 46 of the nozzle forming portion 44. ing. For this reason, the liquid level 171 of the ink in the tank 9A and the tank 9B is positioned below the plurality of nozzles 42 (FIG. 5). Therefore, the water head in the tank 9 </ b> A and the tank 9 </ b> B is lower than the water head in the print head 38. Thereby, it is easy to suppress that the ink near the nozzle 42 is pressurized by the ink stored in the tank 9A and the tank 9B. As a result, the outflow of ink from the nozzle 42 can be suppressed.

  Furthermore, in Example 2, even if the liquid level 171 in the tank 9 belonging to the second group 174 in the first posture is higher than the nozzle forming part 44, the connection part 115 of the tank 9 is higher than the liquid level 171. Become. That is, in Example 2, even if the liquid level 171 in the tank 9 belonging to the second group 174 in the first posture is higher than the nozzle forming portion 44, the supply port 116 (FIG. 9) of the tank 9 is the liquid level. Higher than 171. As a result, the pressure due to the water head of the ink stored in the tank 9C and the tank 9D can be easily blocked by the supply port 116. For this reason, it is easy to suppress that the ink near the nozzle 42 is pressurized by the ink stored in the tank 9C and the tank 9D. As a result, the outflow of ink from the nozzle 42 can be suppressed. As a result, in the second embodiment, in the first posture, it is possible to reduce the possibility of ink flowing out from the nozzles 42 without closing the ink flow path between the tank 9 and the print head 38.

  Further, in the second embodiment, as shown in FIG. 17, the liquid level 171 of the ink in the tank 9 belonging to the second group 174 is more than the front end 45 of the nozzle forming portion 44 of the nozzle surface 41 in the second posture. The tank 9C and the tank 9D are arranged so as to be lowered. In the second posture, the tank 9 </ b> A and the tank 9 </ b> B are arranged at a position where the ink liquid level 171 in the tank 9 belonging to the first group 173 is higher than the rear end 46 of the nozzle forming portion 44. Furthermore, in the second posture, the tank 9A and the tank 9B are arranged so that the connecting portion 115 of the tank 9 belonging to the first group 173 is higher than the liquid level 171.

  In the second embodiment, in the second posture, the tank 9C and the tank 9D are arranged so that the ink liquid level 171 in the tank 9 belonging to the second group 174 is lower than the front end 45 of the nozzle forming portion 44. Yes. For this reason, the liquid level 171 of the ink in the tank 9C and the tank 9D is positioned below the plurality of nozzles 42 (FIG. 5). Therefore, the water head in the tank 9C and the tank 9D is lower than the water head in the print head 38. Thereby, it is easy to suppress the ink near the nozzle 42 from being pressurized by the ink stored in the tank 9C and the tank 9D. As a result, the outflow of ink from the nozzle 42 can be suppressed.

  Furthermore, in Example 2, even if the liquid level 171 in the tank 9 belonging to the first group 173 in the second posture is higher than the nozzle forming part 44, the connection part 115 of the tank 9 is higher than the liquid level 171. Become. That is, in Example 2, even if the liquid level 171 in the tank 9 belonging to the first group 173 in the second posture is higher than the nozzle forming unit 44, the supply port 116 (FIG. 9) of the tank 9 is at the liquid level. Higher than 171. Thereby, the pressure due to the water head of the ink stored in the tank 9 </ b> A and the tank 9 </ b> B can be easily blocked by the supply port 116. For this reason, it is easy to suppress that the ink near the nozzle 42 is pressurized by the ink stored in the tank 9A and the tank 9B. As a result, the outflow of ink from the nozzle 42 can be suppressed. As a result, in the second embodiment, even in the second posture, the possibility of ink flowing out from the nozzles 42 can be reduced without closing the ink flow path between the tank 9 and the print head 38. .

  In an aspect for realizing the configuration of the second embodiment, the tank 9 belonging to the first group 173 and the tank 9 belonging to the second group 174 are arranged symmetrically with the nozzle forming portion 44 of the print head 38 interposed therebetween. It is. The tanks 9 belonging to the first group 173 and the tanks 9 belonging to the second group 174 are positioned symmetrically with respect to the nozzle forming portion 44 of the print head 38 along the Y axis. From another point of view, the tank 9 belonging to the first group 173 and the tank 9 belonging to the second group 174 have a region between the front end 45 and the rear end 46 of the nozzle forming portion 44, and the front end 45 and the rear end 46. Is symmetric with respect to the virtual region 175 extending in the intersecting direction (direction in which the X axis extends). That is, the tank 9 belonging to the first group 173 and the tank 9 belonging to the second group 174 are arranged symmetrically with respect to the virtual region 175.

  By adopting this arrangement, in the second embodiment, the ink flow path between the tank 9 and the print head 38 is closed in both the first posture (FIG. 16) and the second posture (FIG. 17). Even if not, the possibility of ink flowing out from the nozzle 42 can be reduced. Further, by adopting this arrangement, the tank 9 belonging to the first group 173 and the tank 9 belonging to the second group 174 can be arranged side by side in the front-rear direction with the print head 38 interposed therebetween. In the second embodiment, the tank 9 belonging to the first group 173 corresponds to the first liquid storage unit, and the tank 9 belonging to the second group 174 corresponds to the second liquid storage unit. In the second embodiment, the number of tanks 9 belonging to the first group 173 and the number of tanks 9 belonging to the second group 174 are not limited to two, and may be one or three or more.

  In the second embodiment, four tanks 9 constituting the tank unit 5 are provided independently of each other. However, the configuration of the tank unit 5 is not limited to this. As a configuration of the tank unit 5, for example, a configuration in which four tanks 9 constituting the tank unit 5 are integrated may be employed. As a configuration in which the four tanks 9 are integrated, for example, a configuration in which the four tanks 9 are connected (coupled) to each other can be adopted. In addition, as a configuration in which the four tanks 9 are integrated, for example, a configuration in which the four tanks 9 are integrally formed by integral molding or the like and the interior is divided into four chambers may be employed. In this case, each of the four rooms configured by partitioning the interior corresponds to the liquid container. Further, the number of liquid containers and liquid containers may be plural (two or more) or one, respectively.

  In each of the above embodiments, the liquid ejecting apparatus may be a liquid ejecting apparatus that consumes by ejecting, discharging, or applying a liquid other than ink. Note that the state of the liquid ejected as a minute amount of liquid droplets from the liquid ejecting apparatus includes a granular shape, a tear shape, and a thread-like shape. The liquid here may be any material that can be consumed by the liquid ejecting apparatus. For example, it may be in a state in which the substance is in a liquid phase, such as a liquid with high or low viscosity, sol, gel water, other inorganic solvents, organic solvents, solutions, liquid resins, liquid metals (metal melts ). Further, not only a liquid as one state of a substance but also a substance in which particles of a functional material made of a solid such as a pigment or a metal particle are dissolved, dispersed or mixed in a solvent is included. As a typical example of the liquid, in addition to the ink described in each of the above embodiments, a liquid crystal or the like can be given. Here, the ink includes general water-based inks and oil-based inks, and various liquid compositions such as gel inks and hot melt inks. As a specific example of the liquid ejecting apparatus, for example, a liquid containing a material such as an electrode material or a color material used for manufacturing a liquid crystal display, an EL (electroluminescence) display, a surface emitting display, or a color filter in a dispersed or dissolved form. There is a liquid ejecting apparatus for ejecting the liquid. Further, it may be a liquid ejecting apparatus that ejects a bio-organic matter used for biochip manufacturing, a liquid ejecting apparatus that ejects liquid as a sample that is used as a precision pipette, a printing apparatus, a micro dispenser, or the like. In addition, transparent resin liquids such as UV curable resin to form liquid injection devices that pinpoint lubricant oil onto precision machines such as watches and cameras, and micro hemispherical lenses (optical lenses) used in optical communication elements. May be a liquid ejecting apparatus that ejects the liquid onto the substrate. Further, it may be a liquid ejecting apparatus that ejects an etching solution such as acid or alkali in order to etch a substrate or the like.

  DESCRIPTION OF SYMBOLS 1 ... Liquid injection system, 3 ... Printer, 5 ... Tank unit, 6 ... 1st case, 7 ... 2nd case, 9 ... Tank, 10 ... Mechanism unit, 11 ... Paper discharge part, 13 ... Front, 15 ... Top surface, 17 ... Operation panel, 18A ... Power button, 18B ... Operation button, 19 ... Side, 21 ... Window, 23 ... Front, 25 ... Top, 27 ... Side, 28 ... Upper limit mark, 29 ... Lower limit mark, 31 ... Mounting screw, 32 ... support frame, 33 ... mounting screw, 35 ... printing unit, 36 ... supply tube, 37 ... carriage, 38 ... printing head, 39 ... relay unit, 41 ... nozzle surface, 42 ... nozzle, 43 ... nozzle row 44 ... Nozzle forming part, 45 ... Front end, 46 ... Rear end, 51 ... Conveying roller, 53 ... Motor, 55 ... Timing belt, 61 ... Case, 63 ... Sheet member, 64 ... Joining part, 65 ... Housing 67 ... Communication part, 68 ... Atmosphere chamber, 73 ... Communication passage, 80 ... Base wall, 81 ... First wall, 82 ... Second wall, 82A ... Inner wall, 83 ... Third wall, 84 ... Fourth wall, 85 ... 5th wall, 86 ... 6th wall, 87 ... 7th wall, 91 ... recessed part, 99 ... recessed part, 101 ... ink injection part, 105 ... overhang part, 105A, 105B, 105C, 105D ... site, 108 ... groove, 109: recess, 111 ... eighth wall, 112 ... ninth wall, 113 ... tenth wall, 114 ... supply section, 115 ... connection section, 116 ... supply port, 118 ... atmospheric communication port, 121, 122 ... communication port, 131: recess, 132 ... opening, 133 ... side wall, 141 ... ink, 143 ... cap, 151 ... first passage, 152 ... second passage, 153 ... third passage, 154 ... fourth passage, 155 ... fifth passage, 156 ... 6th passage, 161 ... inversion part, 162 ... bending part 163 ... bent portion 164 ... bent portion 165 ... reversing unit, 166 ... bent portion 171 ... liquid level, 173 ... first group, 174 ... second group, 175 ... virtual area, P ... print medium.

Claims (3)

A nozzle forming portion having nozzles formed thereon, and printing is performed on the print medium with the liquid by ejecting the liquid from the nozzle toward the print medium, and the print medium on which the printing has been performed passes through a discharge port; The liquid ejecting apparatus in which the front end of the nozzle forming unit and the rear end of the nozzle forming unit are positioned along the discharge direction of the print medium, with the discharge port of the liquid ejecting apparatus discharged in front as the front side,
A liquid container capable of containing a liquid to be supplied to the liquid ejecting apparatus;
The liquid container has a liquid supply port for supplying the liquid to the liquid ejecting apparatus,
In the first posture in which the nozzle faces in the horizontal direction and the front end of the nozzle forming unit is located above the rear end, the liquid level of the liquid stored in the liquid container is the nozzle forming unit. Arranged to be lower than the rear end of the
The nozzle faces the horizontal direction, and the front end of the nozzle forming portion is below the rear end.
In the second posture, the liquid level is higher than the rear end of the nozzle forming portion, and
The liquid supply port is arranged to be higher than the liquid level,
A liquid ejecting apparatus. A nozzle forming portion having nozzles formed thereon, and printing is performed on the print medium with the liquid by ejecting the liquid from the nozzle toward the print medium, and the print medium on which the printing has been performed passes through a discharge port; The liquid ejecting apparatus in which the front end of the nozzle forming unit and the rear end of the nozzle forming unit are positioned along the discharge direction of the print medium, with the discharge port of the liquid ejecting apparatus discharged in front as the front side,
The liquid container that can store the liquid to be supplied to the liquid ejecting apparatus includes a first liquid storage part and a second liquid storage part,
The first liquid storage unit and the second liquid storage unit each have a liquid supply port for supplying the liquid stored therein to the liquid ejecting apparatus,
In the first posture in which the nozzle faces the horizontal direction and the front end of the nozzle forming portion is located above the rear end, the first liquid storage portion is stored in the first liquid storage portion. Arranged so that the liquid level of the liquid is lower than the rear end of the nozzle forming portion,
In the first posture, the second liquid storage unit is configured such that the liquid level of the liquid stored in the second liquid storage unit is higher than the rear end of the nozzle forming unit, and the liquid The supply port is arranged to be higher than the liquid level,
In the second posture in which the nozzle faces the horizontal direction and the front end of the nozzle forming portion is located below the rear end, the second liquid storage portion is stored in the second liquid storage portion. Arranged so that the liquid level of the liquid is lower than the rear end of the nozzle forming portion,
And in the said 2nd attitude | position, the liquid level of the said liquid accommodated in the said 1st liquid accommodating part is higher than the said rear end of the said nozzle formation part, and the said 1st liquid accommodating part is the said liquid. The supply port is arranged to be higher than the liquid level,
A liquid ejecting apparatus. The liquid ejecting apparatus according to claim 2 ,
The front-rear direction in which the first liquid storage portion and the second liquid storage portion are in a direction connecting the front end and the rear end in a region between the front end and the rear end of the nozzle forming portion. Are arranged symmetrically in the front-rear direction with respect to the virtual region extending in the intersecting direction,
A liquid ejecting apparatus.

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