Patent Publication Number: US-9427974-B2

Title: Liquid supply system, liquid ejecting apparatus, and liquid supply method

Description:
BACKGROUND 
     1. Technical Field 
     The present invention relates to a liquid supply system, a liquid supply apparatus, a liquid ejecting apparatus, and a liquid supply method. 
     2. Related Art 
     An ink jet printer which performs printing by ejecting an ink from nozzles which are provided in a print head is an example of the liquid ejecting apparatus. Among such printers, there are printers in which the ink is supplied to the print head by driving a supply pump from a compact ink cartridge, and from an additional ink tank which has a greater ink storage capacity than the ink cartridge (for example, JP-A-2011-42127). 
     Incidentally, in a printer such as the one described above, there is a problem in that when the additional ink tank is configured to be attachable and detachable, depending on the mounting state of the additional ink tank, it may not be possible to supply the ink to the print head even if the supply pump is driven. 
     Note that, this problem is not limited to a printer which performs printing by ejecting an ink, and is generally common to cases in which a liquid storage body which stores a liquid for supplying is provided with a configuration which can be attached thereto and detached therefrom. 
     SUMMARY 
     An advantage of some aspects of the invention is to provide a liquid supply system, a liquid supply apparatus, a liquid ejecting apparatus, and a liquid supply method, each of which is capable of supplying a liquid, as appropriate, according to the mounting state of a liquid storage body. 
     Hereinafter, means of the invention and operation effects thereof will be described. 
     According to an aspect of the invention, there is provided a liquid supply system which includes a common mounting portion into which a first liquid storage body capable of storing a liquid and a substitute mounting body which is connected to a second liquid storage body capable of storing a liquid via a relay flow path can be exchangeably mounted, a mounting target detection unit capable of detecting whether or not the first liquid storage body and the substitute mounting body are mounted to the common mounting portion, a pressurization supply unit which supplies the liquid which is stored in the second liquid storage body to the substitute mounting body under pressure, and a control unit which drives the pressure supply unit when a plurality of control conditions are satisfied, in which the control conditions include the liquid which is stored in the second liquid storage body entering a pressurizable state and the mounting target detection unit detecting mounting of the substitute mounting body to the common mounting portion. 
     In this case, when the liquid which is stored in the second liquid storage body enters a pressurizable state and the mounting target detection unit detects the mounting of the substitute mounting body to the common mounting portion, since the pressurization supply unit is driven, it is possible to appropriately supply the liquid which is stored in the second liquid storage body through the relay flow path due to the pressurization supply unit being driven. Meanwhile, when the liquid which is stored in the second liquid storage body is not in the pressurizable state, or when the substitute mounting body is not mounted to the common mounting portion, since the pressurization supply unit is not driven, the wasteful driving of the pressurization supply unit does not occur. Therefore, it is possible to appropriately supply the liquid according to the mounting state of the liquid storage body. 
     The liquid supply system may further include a second liquid storage body mounting portion to and from which the second liquid storage body can be attached and detached, and a mounting detection unit capable of detecting whether or not the second liquid storage body is mounted to the second liquid storage body mounting portion. When the mounting detection unit detects that the second liquid storage body is mounted to the second liquid storage body mounting portion, the control unit may determine that the liquid which is stored in the second liquid storage body is in a pressurizable state. 
     In this case, when the second liquid storage body is mounted to the second liquid storage body mounting portion, since the liquid which is stored in the second liquid storage body is determined to be in the pressurizable state, it is possible to appropriately supply the liquid according to the mounting state of the second liquid storage body to the second liquid storage body mounting portion. Meanwhile, when the second liquid storage body is not mounted to the second liquid storage body mounting portion, since the pressurization supply unit is not driven, the wasteful driving of the pressurization supply unit does not occur. 
     In the liquid supply system, the substitute mounting body is detachably connected to the relay flow path via a first connection portion which may be provided on a downstream end of the relay flow path and a second connection portion which may be provided on the substitute mounting body, the common mounting portion may include an attachment portion to which the first connection portion is attached in a removable state, and an attachment detection unit capable of detecting whether or not the first connection portion is in a state of being attached to the attachment portion, and the control conditions may include the attachment detection unit detecting the first attachment unit being attached to the attachment portion. 
     In this case, since the driving of the pressurization supply unit is started after the attachment detection unit detects the fact that the first connection portion which is provided on the downstream end of the relay flow path is attached to the attachment portion of the common mounting portion, when the liquid is supplied, it is possible to reliably hold the relay flow path in the common mounting portion. 
     In the liquid supply system, in a state in which the first connection portion is attached to the attachment portion, the first connection portion may be connected to the second connection portion in a process of the substitute mounting body being mounted to the common mounting portion. 
     In this case, in the state in which the first connection portion is attached to the attachment portion, since the first connection portion is connected to the second connection portion in the process of the substitute mounting body being mounted to the common mounting portion, it is possible to confirm the connection between the substitute mounting body and the relay flow path due to the mounting target detection unit detecting the mounting of the substitute mounting body to the common mounting portion. In addition to this detection, since the fact that the common mounting portion, the substitute mounting body, and the relay flow path are connected to each other is confirmed by detecting the attachment of the first connection portion to the attachment portion, it is possible to appropriately supply the liquid which is stored in the second liquid storage body to the common mounting portion due to the pressurization supply unit being driven after the confirmation. 
     The liquid supply system may further include a restriction portion which is capable of restricting the substitute mounting body which is mounted to the common mounting portion from being detached and is capable of moving between a restriction position which restricts the substitute mounting body which is mounted to the common mounting portion from being detached and a restriction released position which allows the substitute mounting body which is mounted to the common mounting portion to be detached, and a restriction detection unit capable of detecting whether or not the restriction portion is in the restriction position. The control conditions may include the restriction detection unit detecting that the restriction portion is in the restriction position. 
     In this case, when the restriction detection unit detects that the restriction portion is in the restriction position, since it is conceivable that the substitute mounting body which is mounted to the common mounting portion is restricted from being detached, it is possible to appropriately supply the liquid in a state in which the substitute mounting body is reliably mounted to the common mounting portion. 
     The liquid supply system may further include a plurality of the common mounting portions. The control conditions may include the mounting target detection unit detecting that the first liquid storage body or the substitute mounting body is mounted to the common mounting portion. 
     In this case, since the driving of the pressurization supply unit is started when one or more of the first liquid storage bodies or the substitute mounting bodies are mounted to a plurality of the common mounting portions, it is possible to appropriately supply the liquid of the first liquid storage bodies or the second liquid storage bodies which are mounted to the plurality of common mounting portions. 
     According to an aspect of the invention, there is provided a liquid supply apparatus which includes a substitute mounting body which can be mounted, so as to be exchangeable with a first liquid storage body, to a common mounting portion to and from which the first liquid storage body capable of storing a liquid can be attached and detached, a relay flow path which communicates a second liquid storage body capable of storing a liquid with the substitute mounting body, a pressurization supply unit which supplies the liquid which is stored in the second liquid storage body to the substitute mounting body through the relay flow path under pressure, and a control unit which drives the pressure supply unit when a plurality of control conditions are satisfied, in which the control conditions include the liquid which is stored in the second liquid storage body entering a pressurizable state and the substitute mounting body being mounted to the common mounting portion. 
     In this configuration, it is possible to obtain the same effect as the liquid supply system. 
     According to still another aspect of the invention, there is provided a liquid ejecting apparatus which includes a liquid ejecting unit capable of ejecting a liquid, a common mounting portion into which a first liquid storage body capable of storing a liquid and a substitute mounting body which is connected to a second liquid storage body capable of storing a liquid via a relay flow path can be exchangeably mounted, a mounting target detection unit capable of detecting whether or not the first liquid storage body and the substitute mounting body are mounted to the common mounting portion, a pressurization supply unit which supplies the liquid which is stored in the second liquid storage body to the substitute mounting body under pressure, and a control unit which drives the pressure supply unit when a plurality of control conditions are satisfied, in which the control conditions include the liquid which is stored in the second liquid storage body entering a pressurizable state and the mounting target detection unit detecting mounting of the substitute mounting body to the common mounting portion. 
     In this configuration, it is possible to obtain the same effect as the liquid supply system. 
     According to still another aspect of the invention, there is provided a liquid supply method which is carried out by a liquid supply apparatus which includes a substitute mounting body which can be mounted, so as to be exchangeable with a first liquid storage body, to a common mounting portion to and from which the first liquid storage body capable of storing a liquid can be attached and detached, a relay flow path which communicates a second liquid storage body capable of storing a liquid with the substitute mounting body, and a pressurization supply unit which supplies the liquid which is stored in the second liquid storage body to the substitute mounting body through the relay flow path under pressure. The liquid supply method may cause the pressurization supply unit to start being driven when the liquid which is stored in the second liquid storage body enters a pressurizable state and the substitute mounting body is mounted to the common mounting portion. 
     In this configuration, it is possible to obtain the same effect as the liquid supply system. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The invention will be described with reference to the accompanying drawings, wherein like numbers reference like elements. 
         FIG. 1A  is a diagram schematically illustrating a first embodiment of a liquid ejecting apparatus, and  FIG. 1B  is a diagram schematically illustrating the configuration of a relay apparatus. 
         FIG. 2  is a perspective view of the exterior of a main tank. 
         FIG. 3  is an exploded plan view of the main tank. 
         FIG. 4  is an exploded perspective view of the main tank. 
         FIG. 5A  is a front surface diagram of a cap body, as viewed from a +Y direction side,  FIG. 5B  is a side surface diagram of the cap body, as viewed from a +Z direction side, and  FIG. 5C  is a side surface diagram of the cap body, as viewed from a +X direction side. 
         FIG. 6  is a diagram schematically illustrating a fixing structure between the cap body and a mounting member. 
         FIG. 7  is a perspective view illustrating a state in which a liquid container is lifted from a tray. 
         FIG. 8A  is a front view illustrating a state in which the liquid container is placed on the tray, and  FIG. 8B  is a front view illustrating a state in which the liquid container is lifted from the tray. 
         FIGS. 9A and 9C  are perspective views of a connector unit and a substrate holding portion, and  FIG. 9B  is a side surface view of the connector unit and the substrate holding portion. 
         FIG. 10  is a diagram schematically illustrating the configuration of a damper. 
         FIG. 11  is a diagram schematically illustrating a second embodiment of the liquid ejecting apparatus and the liquid supply apparatus in addition to a liquid supply system. 
         FIG. 12  is a perspective view of common mounting portions and first liquid storage bodies which are provided in the liquid ejecting apparatus of  FIG. 11 . 
         FIG. 13  is a block diagram illustrating the electrical configuration of the liquid supply system. 
     
    
    
     DESCRIPTION OF EXEMPLARY EMBODIMENTS 
     Hereinafter, description will be given of the liquid supply system, the liquid supply apparatus, the liquid ejecting apparatus, and the liquid supply method, with reference to the drawings. An example of the liquid ejecting apparatus is an ink jet printer which performs recording (printing) by ejecting an ink, which is an example of the liquid, onto a medium such as paper. 
     First Embodiment 
     Overall Configuration 
     As illustrated in  FIG. 1A , a liquid ejecting apparatus  1  is provided with a main body portion  10  and a storage unit  20 . The main body portion  10  is provided with a liquid ejecting unit  11 , a medium supporting portion  12 , a medium transport mechanism (not shown), a head movement mechanism (not shown), and the like. The liquid ejecting unit  11  is capable of ejecting a liquid, and the medium supporting portion  12  is capable of supporting a medium P. The medium P is transported along the medium supporting portion  12  by the medium transport mechanism which is provided with a feed roller, a feed motor, and the like. 
     The liquid ejecting unit  11  is moved reciprocally by the head movement mechanism in a direction crossing the medium supporting portion  12 . The head movement mechanism is provided with a carriage, a carriage guide shaft, a carriage movement mechanism, a carriage motor, and the like. The liquid ejecting unit  11  is mounted on the carriage, the carriage guide extends in the direction which crosses the medium supporting portion  12 , and the carriage movement mechanism reciprocally moves the carriage along the carriage guide shaft. When the medium P passes the medium supporting portion  12 , the printing is performed due to the liquid ejecting unit  11  ejecting the liquid onto the medium P. 
     The main body portion  10  is provided with a mounting portion  13 . A relay apparatus  14  is mounted in the mounting portion  13  for each color of ink of cyan, magenta, yellow, and black. The liquid ejecting unit  11  and the relay apparatuses  14  are connected by flexible supply tubes  15 . Note that, the relay apparatuses  14 , the supply tubes  15 , and the storage unit  20  form the liquid supply apparatus. 
     The storage unit  20  houses the same number (four, in the present embodiment) of main tanks  21  as relay apparatuses  14 . The four main tanks  21  are supported by the support frame of the storage unit  20 . The main tank  21  is pressurized by pressurized air which is pumped in from a pressurization unit (not shown) which is provided in the main body portion  10 . The relay apparatuses  14  and the main tanks  21  are connected by flexible supply tubes  16 . Note that, the number of relay apparatuses  14  and main tanks  21  may be a number other than four, and the types of liquid which are stored may differ from the four colors of ink described above. 
     As illustrated in  FIG. 1B , the relay apparatus  14  is provided with a cartridge-shaped case  17  in addition to a filter  18  and a storage container  19  which are disposed on an inner portion of the case  17 . The storage container  19  is a flexible tube container, and, for example, a blown bottle which has been created using blow-forming and is made of a resin is used as the storage container  19 . 
     When the relay apparatus  14  is mounted in the mounting portion  13 , a supply needle is inserted into a connection port which is provided in the case  17 . Accordingly, the storage container  19  and the supply tube  15  are connected via the filter  18 , and the storage container  19  and the supply tube  16  are connected to each other. When the main tank  21  is pressurized, the liquid which is stored in the main tank  21  is supplied to the relay apparatus  14 , is stored temporarily, and is subsequently supplied from the relay apparatus  14  to the liquid ejecting unit  11 . 
     Main Tank 
     As illustrated in  FIG. 3 , the main tank  21  illustrated in  FIG. 2  is provided with a container storage portion  22 , and a tray  24 . The container storage portion  22  is a sealed container, and the liquid container  23  is placed on the tray  24 . The container storage portion  22  is provided with a circular cap body  30 , a blown tank  40 , and a mounting member  50 . The blown tank  40  has been created using blow-forming and is made of a resin. The mounting member  50  is disposed on a reverse side of the cap body  30  in the inner portion of the blown tank  40 . 
     In the description hereinafter, three directions which orthogonally intersect each other are defined as a container width direction X, a container front-rear direction Y, and a container vertical direction Z. One side and the other side in the container width direction X are respectively defined as the +X direction and the −X direction, one side and the other side in the container front-rear direction Y are respectively defined as the +Y direction and the −Y direction, and one side and the other side in the container vertical direction Z are respectively defined as the +Z direction and the −Z direction. 
     Opening and Closing Structure of Container Storage Portion 
     As illustrated in  FIG. 2 , the blown tank  40  is a container which is a substantially rectangular prism shape which is long in the container front-rear direction Y and is made of a resin. A circular opening  41  (refer to  FIG. 3 ) is formed in the blown tank  40  and penetrates a container front surface portion  40   a  which is positioned on the end portion of the +Y direction side. 
     A cylindrical portion  42  which protrudes to the +Y direction side is formed at the opening edge of the circular opening  41 . The cap body  30  is mounted to the distal end of the cylindrical portion  42  and seals the circular opening  41  in an airtight state. The cap body  30  is provided with a cap main body portion  31 , which is substantially circular plate shaped, and a flange portion  31   a  overhangs the cap main body portion  31  from the outer circumferential end surface in a ring shape. An O-ring  27  (refer to  FIG. 3 ) is disposed between the flange portion  31   a  and the distal end surface of the cylindrical portion  42 . 
     An outside ring  28  (refer to  FIGS. 2 and 3 ) is mounted to the outside of the cylindrical portion  42  and the cap body  30 . The outer circumferential surface of the cylindrical portion  42  and the inner circumferential surface of the outside ring  28  oppose each other in the radial direction, and while a male screw portion is formed on one, a female screw portion is formed on the other. The outside ring  28  is mounted so as to cause the screw portions to engage with each other. An annular portion  28   a  which overhangs to the inner circumferential side is formed on the end portion of the +Y direction side of the outside ring  28 . When the outside ring  28  is fastened, the annular portion  28   a  retains the flange portion  31   a  from the +Y direction side. Accordingly, the gap between the flange portion  31   a  and the cylindrical portion  42  is sealed by the O-ring  27 . 
     Meanwhile, a rear side opening (not shown) which is open to the −Y direction is formed on the end portion of the opposite side from the circular opening  41  in the blown tank  40 , and an opening and closing door  43  which opens and closes the rear side opening is attached. The opening and closing door  43  rocks around one end side in the container width direction X to open and close. The opening and closing door  43  is opened, and the liquid container  23  and the tray  24  are removed from and inserted into the blown tank  40  from the rear side opening. When the opening and closing door  43  is closed, the rear side opening is sealed in an airtight state. 
     Liquid Supply Portion 
       FIG. 6  is a diagram schematically illustrating the fixing structure between the cap body  30  and the mounting member  50  (a diagram as viewed from an arrow VI direction in  FIG. 5A ), and illustrates a state in which the mounting member  50  and the cap body  30  are separated from each other in the container front-rear direction Y. 
     As illustrated in  FIGS. 5A to 5C , the cap body  30  is mounted to the circular opening  41  of the blown tank  40  in a state of being capable of rotating around a center axis line of the cylindrical portion  42 . The liquid supply portion  32  is provided in the cap body  30  in a position which is slightly shifted from the center of rotation A (refer to  FIG. 5A ). 
     The liquid supply portion  32  is provided with a connection port  32   a  and a protruding portion  32   b . The opening of the connection port  32   a  is formed in the surface of the +Y direction side of the cap main body portion  31 , and the protruding portion  32   b  protrudes in the −Y direction from a position of the reverse side of the connection port  32   a  in the cap main body portion  31 . The supply tube  16  which forms a liquid flow path to the relay apparatus  14  is connected to the connection port  32   a . A supply needle (not shown) is provided on the distal end of the protruding portion  32   b , and a liquid flow path which communicates the connection port  32   a  with the supply needle is formed on the inner portion of the protruding portion  32   b.    
     As illustrated in  FIG. 4 , the mounting member  50  is provided with a mounting member main body portion  50 A and end plate portions  50 B and  50 C. The mounting member main body portion  50 A is a substantially rectangular shape which is long in the container width direction X, and each of the end plate portions  50 B and  50 C is provided on one of the end portions in the container width direction X of the mounting member main body portion  50 A. A penetrating portion  51  is formed in a region of the mounting member main body portion  50 A which overlaps the liquid supply portion  32  in the container front-rear direction Y. The penetrating portion  51  penetrates the mounting member main body portion  50 A in the container front-rear direction Y. The mounting member  50  and the cap body  30  are disposed to interpose the cylindrical portion  42  of the blown tank  40 , and are fixed by the fixing structure described hereinafter. At this time, the supply needle of the liquid supply portion  32  is facing the penetrating portion  51 , and is facing the liquid container  23  which is mounted to the rear surface side of the mounting member main body portion  50 A. 
     Fixing Structure of Cap Body and Mounting Member 
     As illustrated in  FIGS. 5A to 5C , alignment protrusions  33  and  34  which protrude to the −Y direction side are provided in two symmetrical locations on the cap main body portion  31  to interpose the center of rotation A. The base end portion of the alignment protrusion  33  is a cylindrical large diameter portion  33   a , and the distal end portion is a cylindrical small diameter portion  33   b  which has a smaller diameter than the large diameter portion  33   a.    
     A tapered portion is formed on the distal end of the small diameter portion  33   b . The closer to the distal end side, the smaller the diameter of the tapered portion becomes. The alignment protrusion  34  has the same shape as the alignment protrusion  33  and is provided with a large diameter portion  34   a  and a small diameter portion  34   b.    
     Meanwhile, cylindrical protruding portions  52  and  53  (refer to  FIGS. 4 and 6 ) are formed in positions which overlap the alignment protrusions  33  and  34  in the mounting member main body portion  50 A in the container front-rear direction Y. The cylindrical protruding portions  52  and  53  protrude in the +Y direction from the mounting member main body portion  50 A. Alignment holes  52   a  and  53   a  are formed in the end surfaces of the +Y direction sides of the cylindrical protruding portions  52  and  53 . The alignment holes  52   a  and  53   a  are concave portions which do not penetrate the mounting member main body portion  50 A, and the depth thereof is deeper than the lengths of the small diameter portions  33   b  and  34   b.    
     Boss portions  35  and  36  are formed on the cap main body portion  31  in positions separated from the center of rotation A, at two locations in different positions from the alignment protrusions  33  and  34  in the circumferential direction. The boss portions  35  and  36  are disposed at two symmetrical locations to interpose the center of rotation A, and protrude from the cap main body portion  31  in the −Y direction. Fixing through-holes  35   a  and  36   a  which penetrate the cap main body portion  31  and the boss portions  35  and  36  in the container front-rear direction Y are formed in the cap body  30 . 
     Meanwhile, boss portions  54  and  55  are formed in the mounting member main body portion  50 A in positions which overlap the fixing through-holes  35   a  and  36   a  in the container front-rear direction Y. Fixing holes  54   a  and  55   a  are formed in the end surfaces of the +Y direction side of the boss portions  54  and  55 . The fixing holes  54   a  and  55   a  are concave portions which do not penetrate the mounting member main body portion  50 A. 
     As described above, the cap body  30  and the mounting member  50  interpose the cylindrical portion  42  which is provided on the opening edge of the circular opening  41  of the blown tank  40 , from both sides in the container front-rear direction Y, and are fixed to each other by screws. 
     As illustrated in  FIG. 6 , when performing the fixing, first, the small diameter portions  33   b  and  34   b  of the alignment protrusions  33  and  34  which protrude from the cap body  30 , and the alignment holes  52   a  and  53   a  of the cylindrical protruding portions  52  and  53  which protrude from the mounting member  50  are caused to face each other in the container front-rear direction Y. The mounting member  50  and the cap body  30  are caused to approach each other in the container front-rear direction Y, the small diameter portion  33   b  is inserted into the alignment hole  52   a , and the small diameter portion  34   b  is inserted into the alignment hole  53   a . At this time, the insertion of the small diameter portions  33   b  and  34   b  is guided by the tapered portion of the distal ends. The mounting member  50  is aligned with the cap body  30  in the container front-rear direction Y due to the distal end surfaces of the boss portions  54  and  55  abutting the distal end surfaces of the boss portions  35  and  36 . At this time, the mounting member  50  and the cap body  30  are aligned in a relative rotation direction around the center of rotation A. 
     In this manner, when the mounting member  50  is aligned with the cap body  30 , the fixing through-holes  35   a  and  36   a  of the cap body  30  side overlap the fixing through-holes  54   a  and  55   a  of the mounting member main body portion  50 A side in the container front-rear direction Y. In this state, fixing screws  37  are attached to the fixing through-holes  35   a  and  36   a  from the outside of the tank (the +Y direction side), and the fixing screws  37  are fastened until the distal ends thereof are screwed into the fixing holes  54   a  and  55   a . Accordingly, the mounting member  50  is fixed to the cap body  30  by screws. 
     Pressurizing Through-Hole 
     As illustrated in  FIGS. 2 to 5C , a pressurization tube connection portion  38  is formed in the cap body  30  to protrude in the +Y direction to the outside of the fixing through-hole  35   a  in the radial direction. A pressurizing through-hole  38   a  (refer to  FIGS. 5A to 5C ) is formed in the distal end of the pressurization tube connection portion  38 . The pressurizing through-hole  38   a  penetrates the pressurization tube connection portion  38  and the cap main body portion  31  in the container front-rear direction Y. The pressurization tube connection portion  38  is connected to the pressurization unit of the main body portion  10  by a pressurization tube. 
     When the circular opening  41  and the rear side opening are sealed, the inner portion of the container storage portion  22  becomes a sealed space. Pressurized air is pumped into the sealed space from the pressurizing through-hole  38   a , and the container storage portion  22  is pressurized. As described above, since the fixing holes  54   a  and  55   a  and the alignment holes  52   a  and  53   a  which are used in fixing the cap body  30  to the mounting member  50  do not penetrate the mounting member  50 , the pressurizing through-hole  38   a  and the liquid supply portion  32  are the only two locations in the container storage portion  22  which form communication portions with the outside. 
     Terminal Disposition Portion 
     As illustrated in  FIGS. 5A to 5C , a terminal disposition portion  39  is provided in the cap body  30  between the alignment protrusion  33  and the fixing through-hole  36   a . The terminal disposition portion  39  protrudes in the −Y direction from the cap main body portion  31 . When the cap body  30  is fixed to the mounting member  50 , the terminal disposition portion  39  is disposed on the penetrating portion  51  of the mounting member main body portion  50 A and protrudes into the space in which the liquid container  23  is disposed. A penetrating portion  39   a  which penetrates the terminal disposition portion  39  in the container front-rear direction Y is formed therein. 
     The opening of one end of the penetrating portion  39   a  is formed in the distal end surface (the end surface of the −Y direction side) of the terminal disposition portion  39 , and the opening of the other end is formed in the surface of the +Y direction side of the cap main body portion  31 . The connector unit  60  (refer to  FIGS. 2 and 4 ) is mounted to the penetrating portion  39   a . A substrate holding portion  82  (refer to  FIGS. 3 and 4 ) which is provided on the front end of the liquid container  23  is inserted into the penetrating portion  39   a  in the +Y direction. Note that,  FIGS. 5A to 5C  illustrate a state in which the connector unit  60  is not mounted to the terminal disposition portion  39  of the cap body  30 . Detailed description will be given of the connector unit  60  and the substrate holding portion  82  later. 
     Liquid Container 
     As illustrated in  FIG. 7 , the liquid container  23  is provided with a liquid storage pouch  70 , and an adapter  80 . The liquid storage pouch  70  is long in the container front-rear direction Y, and the adapter  80  is attached to one end of the liquid storage pouch  70  in the longitudinal direction. The removal and the insertion of the liquid container  23  from and to the container storage portion  22  is performed in a state in which the liquid container  23  is placed on the tray  24 . 
     Liquid Storage Pouch 
     As illustrated in  FIG. 7 , the liquid storage pouch  70  is flexible and a liquid is sealed in the inner portion thereof. The planar shape of the liquid storage pouch  70  is substantially rectangular, and is of a size which fits on the tray  24 . A communication portion  71  which communicates the inside of the liquid storage pouch  70  with the outside thereof is formed on the end portion of the +Y direction side of the liquid storage pouch  70 . The liquid storage pouch  70  maintains a sealed state except for the communication portion  71 . The communication portion  71  is formed by attaching a pipe-shaped part to the edge of the flexible pouch body. 
     A gusset portion  72  is formed on each of the side surfaces of the +X direction side and the −X direction side of the liquid storage pouch  70 . When the amount of the liquid with which the liquid storage pouch  70  is filled is great, the gusset portion  72  stretches in the container vertical direction Z, and the volume of the liquid storage pouch  70  is great. When the liquid is pumped out from the liquid storage pouch  70  and the amount of liquid is reduced, the gusset portion  72  folds up, the liquid storage pouch  70  becomes thinner, and the capacity is reduced. 
     Adapter 
     As illustrated in  FIG. 7 , in a state in which the liquid container  23  is placed on the tray  24  with the adapter  80  leading, the liquid container  23  is inserted into the container storage portion  22  from the rear side opening thereof in the mounting direction B (in the present embodiment, the +Y direction). The adapter  80  is provided with a front plate portion  80 A, end plate portions  80 B and  80 C, and an attachment portion  80 D. The front plate portion  80 A is long in the container width direction X, each of the end plate portions  80 B and  80 C is provided on one of the sides in the container width direction X of the front plate portion  80 A, and the attachment portion  80 D is provided on the rear surface side (the −Y direction side) of the front plate portion  80 A. The attachment portion  80 D is fixed to interpose the edge of the +Y direction side of the liquid storage pouch  70 . The end plate portions  80 B and  80 C extend in the −Y direction from the both ends of the front plate portion  80 A. 
     Ink Outlet Portion 
     As illustrated in  FIGS. 7 to 8B , the front plate portion  80 A is provided with a substantially rectangular adapter front end surface which faces the +Y direction. A protruding portion  81   a  which protrudes in the +Y direction is formed in the center of the front plate portion  80 A in the container width direction X. On the reverse side (the −Y direction side) of the protruding portion  81   a , a ridge portion  81   b  which is formed on the top surface (the +Z direction surface) of the attachment portion  80 D extends in the container front-rear direction Y. 
     The adapter  80  is provided with a liquid flow path which penetrates the protruding portion  81   a  and the ridge portion  81   b  in the container front-rear direction Y, and the opening of one end of the liquid flow path is formed in the distal end surface of the protruding portion  81   a . The other end of the liquid flow path is connected to the communication portion  71  of the liquid storage pouch  70 . A liquid outlet portion  81  (the liquid outlet portion) which allows the liquid to flow out from the liquid storage pouch  70  is formed of the protruding portion  81   a , the ridge portion  81   b , and the communication portion  71 . 
     The liquid outlet portion  81  is connected to the liquid supply portion  32  of the cap body  30  when the liquid container  23  is mounted to the container storage portion  22 . Therefore, the liquid which is pumped from the liquid outlet portion  81  is supplied to the relay apparatus  14  via the liquid supply portion  32  and the supply tube  16 . At this time, when the container storage portion  22  is pressurized, the liquid storage pouch  70  is crushed by the air pressure, and the pumping out of the liquid in the inner portion thereof is promoted. 
     Engagement Structure of Liquid Container and Tray 
     As illustrated in  FIGS. 7 to 8B , tray  24  on which the liquid container  23  is mounted is provided with a rectangular bottom plate portion  24   a  and a side wall portion  24   b . The bottom plate portion  24   a  is long in the container front-rear direction Y, and the side wall portion  24   b  protrudes in the +Z direction along the edges of the three directions of the +X direction side, the −Y direction side, and the −X direction side of the bottom plate portion  24   a . In the tray  24 , a first engagement portion  25  and a second engagement portion  26  are provided on the edge of the +Y direction side of the bottom plate portion  24   a . The first engagement portion  25  and the second engagement portion  26  are protruding portions which protrude from the bottom plate portion  24   a  in the +Z direction, and are disposed to be separated from each other in the container width direction X. 
     The liquid container  23  is disposed on the edge of the +Y direction side of the tray  24  such that the adapter  80  sits on the tray  24 . As illustrated in  FIGS. 8A and 8B , when the front plate portion  80 A of the adapter  80  is disposed on the front end of the tray  24 , a first engagement target portion  84  is formed in a position which overlaps the first engagement portion  25  in the container vertical direction Z, and a second engagement target portion  85  is formed in a position which overlaps the second engagement portion  26  in the container vertical direction Z. The first engagement target portion  84  and the second engagement target portion  85  are both concave portions which are open in the −Z direction. 
     When the liquid container  23  is placed on the tray  24 , the first engagement portion  25  engages with the first engagement target portion  84  in the container vertical direction Z, and the second engagement portion  26  engages with the second engagement target portion  85  in the container vertical direction Z. Accordingly, the liquid container  23  is aligned with the tray  24  in the container width direction X and the container front-rear direction Y. 
     Connection Between Circuit Board and Connection Terminal 
     As illustrated in  FIG. 7 , the substrate holding portion  82  (the protrusion) which protrudes in the +Y direction is formed on the −X direction side of the protruding portion  81   a  in the front plate portion  80 A. The substrate holding portion  82  is provided with a substantially cylindrical base end portion  82   a , and a substrate attachment portion  82   b  which protrudes further in the +Y direction from the distal end surface of the base end portion  82   a . An inclined surface  82   c  is formed on the distal end of the substrate attachment portion  82   b . The inclined surface  82   c  is a surface which is obtained by inclining the XZ plane in an inclination direction which moves in the +Y direction approaching the −Z direction. 
     The O-ring (not shown) is mounted to the outer circumference of the foot of the base end portion  82   a . When the liquid container  23  is mounted to the container storage portion  22 , the substrate holding portion  82  is inserted into the penetrating portion  39   a  (refer to  FIG. 5A ) of the terminal disposition portion  39  which is protruding to the reverse side of the cap body  30 . The substrate holding portion  82  faces the connector unit  60  (refer to  FIGS. 4 and 9A to 9C ), which is mounted in the penetrating portion  39   a  from the +Y direction, in the container front-rear direction Y. 
     As illustrated in  FIGS. 9A to 9C , the substrate holding portion  82  is formed to mount a separate part to the mounting through-hole which is formed in the front plate portion  80 A of the adapter  80 . Note that, the substrate holding portion  82  may be formed integrally with the front plate portion  80 A. The circuit board  83  is attached to the inclined surface  82   c  of the substrate holding portion  82 . The circuit board  83  is a circuit board in which memory elements, which store the amount of the liquid which is inside the liquid container  23  and the like, are provided. 
     An inclined surface  61  which faces the inclined surface  82   c  of the substrate holding portion  82  is provided on the connector unit  60 . The inclined surface  61  is a surface which is parallel with the inclined surface  82   c , and is disposed inside the penetrating portion  39   a  when the connector unit  60  is mounted to the terminal disposition portion  39  of the cap body  30 . A connection terminal  62  is disposed on the inclined surface  61 . A wiring  63  which is conductively connected to the connection terminal  62  is routed to the rear surface side of the inclined surface  61 . The wiring  63  is routed from the connector unit  60  to the front surface side of the cap body  30 , and is routed to the main body portion  10  side together with the supply tube  16  for supplying the liquid. 
     When the liquid container  23  is mounted to the container storage portion  22 , the substrate holding portion  82  is inserted into the penetrating portion  39   a  of the cap body  30  as the liquid container  23  moves in the mounting direction B. As illustrated in  FIGS. 9A to 9C , when the mounting of the liquid container  23  to the container storage portion  22  is complete, a state is assumed in which the terminal portion on the circuit board  83  which is disposed on the inclined surface  82   c  of the adapter  80  side is in contact with the connection terminal  62  which is disposed on the inclined surface  61  of the connector unit  60  side. Accordingly, the connection between the circuit board  83  and the connection terminal  62  is formed. 
     Alignment of Liquid Container and Shock Absorption Using Damper 
     As illustrated in  FIGS. 8A and 8B , a first guide through-hole  86  and a second guide through-hole  87  (liquid container side alignment portions) which are open to the +Y direction are formed in the front plate portion  80 A of the adapter  80 . The first guide through-hole  86  and the second guide through-hole  87  are disposed to mirror each other in the container width direction X, using the YZ plane (the YZ plane containing the C-C line in  FIG. 8B ) as a reference. The YZ plane passes through the center of the distal end of the protruding portion  81   a  of the liquid outlet portion  81 . 
     The first guide through-hole  86  is disposed on the +X direction side in relation to the protruding portion  81   a , and the second guide through-hole  87  is disposed on the −X direction side in relation to the protruding portion  81   a . The first guide through-hole  86  and the second guide through-hole  87  penetrate the front plate portion  80 A in the container front-rear direction Y. The first guide through-hole  86  is a long hole which is narrow and long in the container width direction X. Meanwhile, the second guide through-hole  87  is a circular through-hole. 
     A first concave portion  88  and a second concave portion  89  are formed in the front plate portion  80 A of the adapter  80 . The first concave portion is formed further to the +X direction side than the first guide through-hole  86 , and the second concave portion  89  is formed further to the −X direction side than the second guide through-hole  87 . The first concave portion  88  and the second concave portion  89  are concave portions which are concave in the −Y direction. 
     The first concave portion  88  and the second concave portion  89  are disposed to mirror each other in the container width direction X, using the C-C line as a reference, and are disposed at equal distances from the protruding portion  81   a  of the liquid outlet portion  81 . The first concave portion  88 , the first guide through-hole  86 , the second guide through-hole  87 , and the second concave portion  89  are disposed on a straight line which is parallel to the container width direction X in the front end surface of the adapter. The liquid outlet portion  81  is disposed closer to the container top side (the +Z direction side) than the positions in which the abovementioned components are arranged. The center of a bottom surface  88   a  of the first concave portion  88  and the straight line D which passes through the center of the bottom surface  89   a  of the second concave portion  89  overlap the first and second engagement target portions  84  and  85  which are the parts which engage with the tray  24  in the adapter  80  (refer to  FIGS. 8A and 8B ). 
     Meanwhile, as illustrated in  FIG. 3 , the mounting member  50  is provided with two guide pins  56  and  57  (mounting member side engagement portions) which protrude from the mounting member main body portion  50 A in the −Y direction. The guide pin  56  is disposed on the +X direction side in relation to the penetrating portion  51 , and the guide pin  57  is disposed on the −X direction side in relation to the penetrating portion  51 . Dampers  58  and  59  (buffering portions) are disposed on the outside of the container width direction X in relation to the guide pins  56  and  57 . 
     The damper  58  is disposed on the +X direction side in relation to the guide pin  56 , and the damper  59  is disposed on the −X direction side in relation to the guide pin  57 . The distal end portions of the dampers  58  and  59  protrude from the mounting member main body portion  50 A in the −Y direction. The damper  58 , the guide pin  56 , the guide pin  57 , and the damper  59  are disposed on a straight line which is parallel to the container width direction X. 
     The liquid container  23  is inserted into the container storage portion  22  by causing the adapter  80 , which is disposed to lead the liquid container  23 , to face the mounting member  50  in the container front-rear direction Y. At this time, the guide pin  56  of the mounting member  50  faces the first guide through-hole  86  of the adapter  80 , and the guide pin  57  of the mounting member  50  faces the second guide through-hole  87 . 
     The damper  58  of the mounting member  50  faces the first concave portion  88  of the adapter  80 , and the damper  59  of the mounting member  50  faces the second concave portion  89  of the adapter  80 . When the liquid container  23  is moved in the mounting direction B, the adapter  80  which is disposed to lead the liquid container  23  approaches the mounting member  50 . At this time, at first, the insertion of the dampers  58  and  59  to the first and second concave portions  88  and  89  is started. Subsequently, the insertion of the guide pins  56  and  57  to the first and second guide through-holes  86  and  87  is started before the distal ends of the dampers  58  and  59  make contact with the bottom surfaces  88   a  and  89   a  of the first and second concave portions  88  and  89 . 
     The guide pins  56  and  57  are inserted into the first and second guide through-holes  86  and  87  while being guided by the tapered portions which are formed on the distal ends of the guide pins  56  and  57 . The guide pins  56  and  57  are shaped as cylinders with fixed diameters except for the tapered portions. When the cylindrical portions of the guide pins  56  and  57  are inserted into the first and second guide through-holes  86  and  87 , the adapter  80  is aligned on the XZ plane in relation to the mounting member  50 . At this time, since the second guide through-hole  87  is circular, the second guide through-hole  87  serves as a reference for the alignment. 
     Meanwhile, since the other first guide through-hole  86  is a long through-hole, the first guide through-hole  86  serves to prevent the rotation of the adapter  80  in relation to the mounting member  50 . After the alignment on the XZ plane using the guide pins  56  and  57  and the first and second guide through-holes  86  and  87  is completed, the distal ends of the dampers  58  and  59  abut the bottom surfaces  88   a  and  89   a  (abutting portions: refer to  FIGS. 8A, 8B, and 10 ) of the first and second concave portions  88  and  89 . 
     The dampers  58  and  59  are air dampers which are capable of expanding and contracting in the container front-rear direction Y. The detailed configuration of the dampers  58  and  59  will be described later. The dampers  58  and  59  abut the bottom surfaces  88   a  and  89   a  of the first and second concave portions  88  and  89 , and subsequently, are compressively pressed in the +Y direction with the further movement of the liquid container  23  in the mounting direction B. 
     At this time, the dampers  58  and  59  generate a buffering force which counters the inertial force of the liquid container  23  which moves in the mounting direction B. Accordingly, after the dampers  58  and  59  abut the bottom surfaces  88   a  and  89   a  of the first and second concave portions  88  and  89 , the impact force which acts on the colliding parts of the container storage portion  22  and the liquid container  23  is reduced by the buffering action of the abutting. 
     As described above, the liquid container  23  is provided with the liquid outlet portion  81  which protrudes from the adapter  80  in the +Y direction. Meanwhile, the container storage portion  22  is provided with the liquid supply portion  32  which protrudes from the penetrating portion  51  of the mounting member  50  to the liquid container  23  side. When the positioning of the adapter  80  on the XZ plane in relation to the mounting member  50  is performed by the guide pins  56  and  57 , the liquid outlet portion  81  of the liquid container  23  faces the liquid supply portion  32  of the container storage portion  22 . 
     The liquid outlet portion  81  is connected to the liquid supply portion  32  after a state is assumed in which the compression of the dampers  58  and  59  is started and the buffering action occurs. A seal member (not shown) is provided on the distal end portion of the liquid outlet portion  81 . The seal member is biased in the +Y direction by a spring seat. When the liquid outlet portion  81  is not connected to the liquid supply portion  32 , the seal member seals the liquid outlet portion  81  and stops the liquid from flowing out. 
     When the liquid outlet portion  81  is connected to the liquid supply portion  32 , the seal member is compressed to move in the −Y direction by the supply needle, and, as a result, the flow path within the liquid outlet portion  81  and the flow path within the liquid supply portion  32  are communicated. 
     After the liquid supply portion  32  is connected to the liquid outlet portion  81 , the liquid container  23  is moved further in the mounting direction B (the +Y direction). At this stage, the connection between the connection terminal  62  and the circuit board  83  is performed. The connection terminal  62  is held in the cap body  30  of the container storage portion  22 , and the circuit board  83  is held in the adapter  80  of the liquid container  23 . In other words, when the liquid supply portion  32  is connected to the liquid outlet portion  81 , the substrate holding portion  82  which holds the circuit board  83  is already inserted into the distal end side of the penetrating portion  39   a  to which the connector unit  60  is attached. 
     If the liquid container  23  is moved further in the mounting direction B from this state, first, the O-ring (not shown) which is mounted in the base end portion  82   a  of the substrate holding portion  82  is crushed by the distal end surface of the terminal disposition portion  39 . Accordingly, the penetrating portion  39   a  stops communicating with the pressurized space inside the container storage portion  22 , and it is possible to perform the connection of the circuit board  83  to the connection terminal  62  outside of the pressurized space. 
     Subsequently, inside the penetrating portion  39   a , the connection terminal  62  which is attached to the inclined surface  61  of the connector unit  60  makes contact with the circuit board  83  which is attached to the inclined surface  82   c  of the substrate attachment portion  82   b . The circuit board  83  and the connection terminal  62  make sliding contact along the inclination direction of the inclined surfaces  61  and  82   c  when the contact is made. 
     As described above, the liquid container  23  is mounted to the container storage portion  22  by undergoing the five steps (1) to (5) described below. 
     (1) Align the tray  24  and the liquid container  23  using two engagement portions. 
     (2) Align the mounting member  50  and the liquid container  23  using the two guide pins  56  and  57 . 
     (3) A buffering action is generated by the dampers  58  and  59 . 
     (4) The liquid supply portion  32  is connected to the liquid outlet portion  81 . 
     (5) The connection terminal  62  of the container storage portion  22  side makes contact with the circuit board  83  of the liquid container  23  side. 
     Release-Stop Structure of Liquid Container 
     When the liquid container  23  is mounted to the container storage portion  22 , the end plate portion  80 B of the adapter  80  is positioned on the inside of the container width direction X of the end plate portion  50 B of the mounting member  50 , and the end plate portion  80 C is positioned on the inside of the container width direction X of the end plate portion  50 C of the mounting member  50 . A plate spring  90  is attached to the inside surface in the container width direction X of each of the end plate portions  50 B and  50 C. 
     Meanwhile, a locking portion  91  is formed on each of the end plate portions  80 B and  80 C. The locking portions  91  are protrusions which protrude from the outside surfaces of the end plate portions  80 B and  80 C in the container width direction X. When the liquid container  23  moves in the mounting direction B within the container storage portion  22 , the plate springs  90  and the locking portions  91  engage at the two locations between the end plate portion  50 B and the end plate portion  80 B, and between the end plate portion  50 C and the end plate portion  80 C. 
     When the five steps described above, (1) to (5), are completed, the engagement between the plate springs  90  and the locking portions  91  at both end portions of the liquid container  23  in the container width direction X is also completed. The locations at which the plate springs  90  are engaged with the locking portions  91  will not be disengaged by a degree of force exerted by weak vibrations. Accordingly, the plate springs  90  and the locking portions  91  function as release-stops for the liquid container  23  during vibration. Meanwhile, the engagement locations will be easily disengaged by a degree of force exerted by a user pulling the liquid container  23 . Accordingly, it is easy to exchange the liquid containers  23 . 
     Damper 
     As illustrated in  FIG. 10 , the dampers  58  and  59  are air dampers in which a buffering force is generated by compressing air. The dampers  58  and  59  have the same configuration. A protruding portion  100  which protrudes in the −Y direction is formed in each formation position of the dampers  58  and  59  in the mounting member main body portion  50 A. 
     Each of the dampers  58  and  59  is provided with a concave portion  101 , a linear piston  102  (a movement unit), and a coil spring  103  (a biasing portion). The concave portion  101  is formed in the distal end surface of the protruding portion  100 , one end of the piston  102  is inserted into a space (a concave portion space  101   a ) inside the concave portion  101 , and the coil spring  103  is disposed in the concave portion space  101   a . The concave portion  101  is concave in a linear shape in the +Y direction. An end portion  102   a  of the +Y direction side of the piston  102  is inserted into the concave portion space  101   a . The end portion  102   a  makes contact with the inner circumferential surface of the concave portion  101  from the inside, and locks the concave portion space  101   a  in an airtight state. 
     The piston  102  is capable of reciprocal movement in a compression direction E in which the air of the concave portion space  101   a  is compressed, and in the reverse direction. The dampers  58  and  59  are formed such that the compression direction E and the mounting direction B of the liquid container  23  match. In the present embodiment, the compression direction E and the mounting direction B are both the +Y direction. The coil spring  103  is of a free length in the state in which the coil spring  103  is not being compressed by the piston  102 . 
     An end portion  102   b  of the other side of the piston  102  faces the bottom surface  88   a  ( 89   a ) of the first concave portion  88  (the second concave portion  89 ) of the adapter  80 . When the liquid container  23  moves in the mounting direction B (the +Y direction), the piston  102  abuts the bottom surface  88   a  ( 89   a ), and the liquid container  23  is pressed to move in the compression direction E (the +Y direction or the mounting direction B) by the bottom surface  88   a  ( 89   a ). 
     At this time, since the length of the damper  58  ( 59 ) is compressed, and the air which is sealed in the concave portion  101  is compressed, a restorative force which acts to restore the piston  102  acts in the opposite direction from the compression direction E. At this time, since the coil spring  103  is compressed, the piston  102  is biased in the opposite direction (the −Y direction) to the compression direction E by the coil spring  103 . 
     The restorative force and the biasing force act on the liquid container  23  in the opposite direction to the mounting direction B, and increases as the piston  102  moves in the +Y direction. When the liquid container  23  is pressed by the damper  58  ( 59 ), a buffering action is caused by the restorative force and the biasing force, and the shock which occurs when the liquid container  23  collides with the container storage portion  22  is reduced. 
     Accordingly, the shock which is applied to the locations (in particular, the liquid supply portion  32  and the liquid outlet portion  81 ) which make contact when the liquid container  23  is mounted to the container storage portion  22 . Note that, a configuration may be adopted in which a minute communication portion which communicates with the outside of the mounting member main body portion  50 A is provided in one of the surfaces or the opening side of the concave portion space  101   a , and the compressed air slowly escapes. Accordingly, the behavior during insertion is softened, and the shock when the collision occurs is reduced. Since the compressed air of the concave portion space  101   a  escapes and the restorative force is weakened, it is possible to render the engagement between the plate springs  90  and the locking portions  91  more difficult to disengage. 
     Next, description will be given of the actions of the liquid ejecting apparatus  1 , which is configured as described above. 
     The liquid ejecting apparatus  1  is provided with the main tank  21  which stores the liquid which is supplied to the liquid ejecting unit  11 , and the liquid container  23  can be attached to and detached from the container storage portion  22  of the main tanks  21 . The container storage portion  22  is provided with the liquid supply portion  32  which supplies the liquid to the liquid ejecting unit  11  side, and the dampers  58  and  59 . In each of the dampers  58  and  59 , the piston  102  is disposed so as to seal one end of the concave portion space  101   a  which is concave in the mounting direction B of the liquid container  23 . Each of the dampers  58  and  59  is an air-damper which compresses the air of the concave portion space  101   a  and generates a buffering action by causing the piston  102  to move in the mounting direction B. 
     Meanwhile, the liquid container  23  is provided with the adapter  80  which is disposed on the side portion of the side of the direction of mounting to the container storage portion  22  (the mounting direction B side), and the liquid storage pouch  70  is aligned using the adapter  80 . The liquid outlet portion  81  which is connected to the liquid supply portion  32  is formed on the adapter  80 , and in addition, the first concave portion  88  and the second concave portion  89  which are concave in the opposite direction to the mounting direction B are formed on each side of the liquid outlet portion  81 . The bottom surface  88   a  of the first concave portion  88  and the bottom surface  89   a  of the second concave portion  89  respectively face the dampers  58  and  59  in the mounting direction B. Therefore, when the liquid container  23  moves in the mounting direction B, the liquid container  23  abuts the pistons  102  of the dampers  58  and  59 , causes the pistons  102  to move in the mounting direction B, and compresses the air of the concave portion spaces  101   a.    
     In this manner, by disposing the dampers  58  and  59 , in which the direction in which the buffering action is generated (the compression direction E) matches the mounting direction B of the liquid container  23 , between the liquid container  23  and the container storage portion  22 , it is possible to reduce the shock that arises when the liquid container  23  collides with the container storage portion  22  due to the buffering action of the dampers  58  and  59  when the liquid container  23  is mounted to the container storage portion  22 . 
     It is possible to increase the length of the expansion and contraction stroke (the movement strokes of the pistons  102 ) of the dampers  58  and  59  by the depth of the concave portions due to the abutting portions with which the dampers  58  and  59  abut (the first concave portion  88  and the second concave portion  89 ) being concave portions. Therefore, it is possible to increase the buffering action, and it is possible to further reduce the shock which is applied to the liquid container  23  during mounting. 
     In the present embodiment, since the buffering action of the dampers  58  and  59  is generated before the liquid outlet portion  81  is connected to the liquid supply portion  32 , the shock that is sustained by the liquid outlet portion  81  and the liquid supply portion  32  is reduced. The dampers  58  and  59  are disposed at equal distance from each other to interpose the liquid outlet portion  81 . Therefore, the buffering action is generated in mirrored positions in relation to the liquid outlet portion  81  and liquid supply portion  32 , and the liquid container  23  does not incline easily in relation to the container storage portion  22 . Accordingly, it is possible to suppress the misalignment of the liquid outlet portion  81  and the liquid supply portion  32 . 
     In the present embodiment, the liquid container  23  is placed on the tray  24  and is removed from and inserted into the container storage portion  22 . In the front ends in the mounting direction B of the liquid container  23  and the tray  24 , the first engagement portion  25  and the second engagement portion  26  which are provided in the tray  24  engage with the first engagement target portion  84  and the second engagement target portion  85  which are provided in the adapter  80  of the liquid container  23  in a direction (the container vertical direction Z) which orthogonally intersects the mounting direction B. 
     The two engagement portions engage at positions which overlap the straight line D which joins the centers of the dampers  58  and  59  when viewed from the mounting direction B (the +Y direction). Due to this disposition, when a repulsive force acts from the dampers  58  and  59  during the mounting of the liquid container  23 , it is possible to suppress the misalignment of the liquid container  23  in an anti-mounting direction (the −Y direction) in relation to the tray  24  due to the repulsive force. Therefore, it is possible to suppress the assumption of a state in which the liquid outlet portion  81  and the liquid supply portion  32  are poorly connected to each other. 
     Note that, in the present embodiment, two sets of the air damper (the dampers  58  and  59 ) and the abutting portion (the bottom surface  88   a  of the first concave portion  88  and the bottom surface  89   a  of the second concave portion  89 ) are provided; however, three or more sets may be provided. Even when three or more sets are provided, it is preferable to dispose the sets divided over both sides of the liquid outlet portion  81 . It is preferable to dispose the sets to be mirrored in the container width direction X, using the liquid outlet portion  81  as a reference. 
     Second Embodiment 
     Next, description will be given of the second embodiment of the liquid ejecting apparatus and the liquid supply apparatus, and the liquid supply system and the liquid supply method which supply the liquid to the same liquid ejecting apparatus, with reference to the drawings. 
     Hereinafter, in the description of the second embodiment, description of components which have the same reference numerals as those in the first embodiment will be omitted, and description will be given mainly of the points which differ from the first embodiment. 
     As illustrated in  FIG. 11 , the liquid is supplied to a liquid ejecting apparatus  110  of the present embodiment by a liquid supply system  111 . The liquid supply system  111  is formed of a liquid supply apparatus  112  to which the liquid container  23  is mounted. 
     The liquid supply apparatus  112  is provided with a liquid storage body holding apparatus  113 , a substitute mounting body  114 , a relay flow path  115 , and a pump mechanism  116 . The relay flow path  115  communicates the liquid container  23  which is capable of storing the liquid with the substitute mounting body  114 , and the pump mechanism  116  is for pumping the liquid which is stored in the liquid container  23  to the liquid ejecting apparatus  110 . 
     The liquid storage body holding apparatus  113  is provided with the container storage portion  22  and the tray  24 . The container storage portion  22  serves as the second liquid storage body mounting portion to and from which the liquid container  23  which serves as the second liquid storage body can be attached and detached, and the liquid container  23  is placed on the tray  24 . 
     The substitute mounting body  114  is provided with a filter chamber  121 , the storage container  19 , a first supply path  122 , a second supply path  123 , and a third supply path  124 . The filter chamber  121  houses the filter  18 , the downstream end of the first supply path  122  is inserted into the storage container  19 , the downstream end of the second supply path  123  is inserted into the storage container  19  and the downstream end of the second supply path  123  communicates with the filter chamber  121 , and the downstream end of the third supply path  124  communicates with the filter chamber  121 . 
     The pump mechanism  116  is provided with a pressurization supply unit  131 , a pressurization tube  132 , an open-close valve  133 , a control unit  134 , and a remaining amount detection unit  137 . The pressurization supply unit  131  pumps pressurized air, the pressurization tube  132  is for introducing the pressurized air which is pumped from the pressurization supply unit  131  into the container storage portion  22 , the open-close valve  133  is capable of blocking the relay flow path  115 , and the control unit  134  controls the pressurization supply unit  131  and the open-close valve  133 . The pressurization supply unit  131  supplies the liquid which is stored in the liquid container  23  to the substitute mounting body  114  under pressure by pumping the pressurized air into the container storage portion  22  through the pressurization tube  132 . 
     The remaining amount detection unit  137  is a sensor which detects that the remaining amount of the liquid which is stored in the liquid container  23  is less than a predetermined value. For example, the remaining amount detection unit  137  is provided with an elastic body capable of elastically deforming which is disposed in the relay flow path  115 , and a lever, the position of which changes with the deformation of the elastic body. The remaining amount detection unit  137  detects a change in the lever position which is caused by the elastic body, which had been compressively deformed by the pressure of the liquid in the relay flow path  115 , deforming restoratively with the reduction in the pressure of the liquid. 
     Therefore, when the liquid which is stored in the liquid container  23  is depleted and the liquid does not flow out to the relay flow path  115  even using the pressurization, since the pressure in the relay flow path  115  is reduced and the position of the lever changes, it is possible to detect that the remaining amount of the liquid is less than the predetermined value. When the amount of the liquid which is stored in the liquid container  23  is greater than or equal to the predetermined value, it is possible to confirm whether the liquid in the liquid container  23  is in a sufficiently pressurized state by detecting the change in the lever position due to the pressurization using the remaining amount detection unit  137 . 
     A first connection portion  135  which has a connection needle  136  is provided on the downstream end of the relay flow path  115 . A second connection portion  125  is provided on the upstream end of the first supply path  122  of the substitute mounting body  114  and is capable of connecting to and detaching from the connection needle  136  of the first connection portion  135 . 
     The pump mechanism  116  is provided with a mounting detection unit  117  which is capable of detecting whether or not the liquid container  23  is mounted to the container storage portion  22 . In the present embodiment, the mounting detection unit  117  detects that the liquid container  23  is mounted to the container storage portion  22  due to the connection terminal  62  (refer to  FIG. 9B ) which is provided in the container storage portion  22  being electrically connected to the terminal portion of the circuit board  83  (refer to  FIG. 9B ) which is provided in the liquid container  23 . 
     The liquid ejecting apparatus  110  of the present embodiment is provided with a common mounting portion  141  and a mounting target detection unit  142 . A first liquid storage body  95  (refer to  FIG. 12 ) which is capable of storing the liquid and the substitute mounting body  114  can be exchangeably mounted to the common mounting portion  141 , and the mounting target detection unit  142  is capable of detecting whether or not the first liquid storage body  95  and the substitute mounting body  114  are mounted to the common mounting portion  141 . The first liquid storage body  95  is, for example, an ink cartridge which stores an ink. 
     The liquid ejecting apparatus  110  is provided with a main control unit  143 , an operation unit  156 , and a display unit  157 . The main control unit  143  performs the control of the liquid ejecting unit  11  and the like, the operation unit  156  is for inputting instructions to the main control unit  143  or the like, and the display unit  157  displays the control status or the like according to the main control unit  143 . 
     In the present embodiment, a circuit board  126  which has a terminal portion on the distal end portion is attached to the substitute mounting body  114  in the insertion direction C (the direction illustrated by the white-filled arrow in  FIG. 11 ) in relation to the common mounting portion  141 . A connection terminal  155  which is capable of electrically connecting to the terminal portion of the circuit board  83  is provided on the inner side of the common mounting portion  141 . The mounting target detection unit  142  detects that the substitute mounting body  114  is mounted to the common mounting portion  141  due to the terminal portion of the circuit board  126  which is attached to the substitute mounting body  114  electrically connecting to the connection terminal  155  with the insertion of the substitute mounting body  114  into the common mounting portion  141 . 
     As illustrated in  FIG. 12 , a circuit board  97  is attached to the first liquid storage body  95 . The circuit board  97  has a terminal portion on the distal end portion thereof in the insertion direction C in relation to the common mounting portion  141 . The mounting target detection unit  142  detects that the first liquid storage body  95  is mounted to the common mounting portion  141  due to the terminal portion of the circuit board  97  which is attached to the first liquid storage body  95  electrically connecting to the connection terminal  155  with the insertion of the first liquid storage body  95  into the common mounting portion  141 . 
     As illustrated in  FIG. 11 , the common mounting portion  141  is provided with an attachment portion  144  and an attachment detection unit  145 . The first connection portion  135  is attached to the attachment portion  144  in a removable state, and the attachment detection unit  145  is capable of detecting whether or not the first connection portion  135  is in a state of being attached to the attachment portion  144 . When the first connection portion  135  is appropriately attached to the attachment portion  144 , the connection needle  136  protrudes from the common mounting portion  141  in the opposite direction from the insertion direction C. 
     Note that, in the substitute mounting body  114 , when a configuration is adopted in which the portion at which the second connection portion  125  is provided protrudes further than the outer shape of the first liquid storage body  95 , even if the state in which the first connection portion  135  is attached to the attachment portion  144  is maintained, it is possible to mount the first liquid storage body  95  to the common mounting portion  141 . 
     In the state in which the first connection portion  135  is attached to the attachment portion  144 , the substitute mounting body  114  is connected to the relay flow path  115  in the process of the substitute mounting body  114  being mounted to the mounting portion  13  by the first connection portion  135  being connected to the second connection portion  125 . 
     The common mounting portion  141  is provided with a restriction portion  146  which is capable of restricting the detachment of the substitute mounting body  114  and the first liquid storage body  95  which are mounted to the common mounting portion  141 . The restriction portion  146  is capable of moving between a restriction position illustrated by the solid line in  FIG. 11 , and a restriction released position illustrated by the double-dot-dash line in  FIG. 11 . The restriction position is a position which restricts the detachment (the pulling out) of the first liquid storage body  95  and the substitute mounting body  114  which are mounted to the common mounting portion  141 , and the restriction released position is a position which allows the attachment and detachment of the first liquid storage body  95  and the substitute mounting body  114  which are mounted in the common mounting portion  141 . The common mounting portion  141  is provided with a restriction detection unit  147  which is capable of detection whether or not the restriction portion  146  is in the restriction position. 
     As illustrated in  FIG. 12 , it is possible to use a locking lever for the restriction portion  146 , for example, and in this case, it is preferable to provide the first liquid storage body  95  and the substitute mounting body  114  with an engagement concave portion  96  capable of inserting or extracting the restriction portion  146  which is a locking lever in the proximity of the opening portion of the common mounting portion  141  in a state of being mounted to the common mounting portion  141 . It is preferable for the liquid ejecting apparatus  110  to be provided with a plurality (in the present embodiment, four) of the common mounting portions  141 . 
     As illustrated in  FIG. 11 , the liquid ejecting apparatus  110  of the present embodiment is provided with a supply flow path  149 , a pressurization unit  151 , and a pressure adjustment mechanism  152 . A supply needle  148  is provided on the downstream end of the supply flow path  149 , the liquid ejecting unit  11  is connected to the upstream end of the supply flow path  149 , the pressurization unit  151  is provided part way down the supply flow path  149 , and the downstream end of the supply flow path  149  communicates with the pressure adjustment mechanism  152 . The liquid ejecting unit  11  is provided with a plurality of nozzles  153  which eject the liquid, and liquid supply paths  154  which communicate the pressure adjustment mechanism  152  with the nozzles  153 . 
     When the liquid is ejected from the nozzles  153  or the like and the pressure of the liquid supply path  154  assumes a lower negative pressure than a threshold Pm (Pm&lt;0) which is set in advance, the pressure adjustment mechanism  152  communicates the supply flow path  149  with the liquid supply path  154 , and when the pressure of the liquid supply path  154  is greater than or equal to the threshold Pm, the pressure adjustment mechanism  152  restricts the communication between the supply flow path  149  and the liquid supply path  154 . Therefore, even if the pressure in the supply flow path  149  assumes a pressurized state due to the driving of the pressurization unit  151 , the liquid is not supplied to the nozzles  153  due to the pressure adjustment mechanism  152  restricting the communication between the supply flow path  149  and the liquid supply path  154 . 
     Note that, a configuration may be adopted in which the liquid which is supplied to the liquid ejecting unit  11  through the supply flow path  149  is returned to the storage container  19  through a cyclic flow path (not shown). The upstream end of the cyclic flow path is connected to the liquid ejecting unit  11 , and the downstream end of the cyclic flow path is inserted into the storage container  19 . In this case, since it is possible to cause the liquid to cycle between the storage container  19  and the liquid ejecting unit  11  through the cyclic flow path and the supply flow path  149 , it becomes possible to suppress the precipitation of a precipitate component, even when the liquid contains a precipitate component such as pigment, for example. 
     Here, it is preferable that, when the substitute mounting body  114  is mounted to the common mounting portion  141 , the inside of the storage container  19  is filled with the liquid and the substitute mounting body  114  is subsequently mounted to the common mounting portion  141 . If such a configuration is adopted, it is possible to suppress the entrance of bubbles into the supply flow path  149  when connecting the third supply path  124  to the supply flow path  149 . 
     It is preferable to allow the liquid which is stored in the liquid container  23  to the relay flow path  115  using the drive of the pressurization supply unit  131  and render the connection needle  136  filled with the liquid to the distal end before attaching the first connection portion  135  to the attachment portion  144 . If such a configuration is adopted, it is possible to suppress the entrance of bubbles into the first supply path  122  when connecting the relay flow path  115  to the first supply path  122  with the mounting of the substitute mounting body  114  to the common mounting portion  141 . 
     It is preferable that, when starting the supply of the liquid from the liquid container  23 , the relay flow path  115  which is filled with the liquid is connected to the first supply path  122  and the storage container  19  which is filled with the liquid is connected to the supply flow path  149 , and subsequently, the supply flow path  149 , the pressure adjustment mechanism  152 , the liquid supply path  154 , and the nozzles  153  are filled with the liquid by discharging the liquid from the nozzles  153 . If such a configuration is adopted, it is possible to discharge the bubbles from inside the flow path in one filling operation, even if the bubbles enter the flow path with the connection of the substitute mounting body  114  or the relay flow path  115 . 
     Next, description will be given of the electrical configuration of the liquid supply system  111 . 
     As illustrated in  FIG. 13 , the liquid ejecting apparatus  110  is provided with a plurality of (in the present embodiment, four) connectors  158  which correspond to the number of the common mounting portions  141 . The connector  158  is for electrically connecting the pump mechanism  116  to the liquid ejecting apparatus  110 , such as a USB connector, for example. 
     A cable  139  such as a USB cable which is connected to the connector  138  which provided in the pump mechanism  116  is connected to the connector  158 . The main control unit  143  of the liquid ejecting apparatus  110  is connected to the control unit  134  of the pump mechanism  116  in a state of being capable of communication via the connectors  138 ,  158 , and the cable  139 . 
     Note that, although it is also possible to supply power from the liquid ejecting apparatus  110  through the cable  139 , it is preferable to provide the pump mechanism  116  with a power plug and to drive the pump mechanism  116  using the power which is supplied through the power plug. 
     The main control unit  143  of the liquid ejecting apparatus  110  is electrically connected to the liquid ejecting unit  11 , the operation unit  156 , the display unit  157 , the pressurization unit  151 , the mounting target detection unit  142 , the attachment detection unit  145 , and the restriction detection unit  147 . The main control unit  143  transmits the detection results of the mounting target detection unit  142 , the attachment detection unit  145 , and the restriction detection unit  147  to the control unit  134 . 
     The control unit  134  of the pump mechanism  116  is electrically connected to the pressurization supply unit  131 , the open-close valve  133 , the mounting detection unit  117 , and the remaining amount detection unit  137 . The control unit  134  transmits the detection results of the mounting detection unit  117  and the remaining amount detection unit  137  to the main control unit  143 . The control unit  134  controls the pressurization supply unit  131  and the open-close valve  133  based on the detection results of the mounting target detection unit  142 , the attachment detection unit  145 , the restriction detection unit  147 , the mounting detection unit  117 , and the remaining amount detection unit  137 . 
     Next, description will be given of the liquid supply method which is used by the liquid supply apparatus  112  of the present embodiment. 
     When all of a plurality (in the present embodiment, the five control conditions (1) to (5) indicated below) of control conditions are satisfied, the control unit  134  starts the driving of the pressurization supply unit  131 , the control unit  134  causes the pressurization supply unit  131  to start being driven, assuming that the open-close valve  133  is in the closed-valve state in the pump mechanism  116  in which the mounting of the substitute mounting body  114  is detected in the control condition (2) below. 
     (1) The liquid which is stored in the liquid container  23  is in a pressurizable state. 
     (2) The mounting target detection unit  142  detects the mounting of the substitute mounting body  114  to the common mounting portion  141 . 
     (3) The attachment detection unit  145  detects the attachment of the first connection portion  135  to the attachment portion  144 . 
     (4) The restriction detection unit  147  detects that the restriction portion  146  is in the restriction position. 
     (5) The mounting target detection unit  142  detects the mounting of the first liquid storage body  95  or the substitute mounting body  114  in relation to all of the common mounting portions  141 . 
     Note that, in the present embodiment, when the mounting detection unit  117  detects the mounting of the liquid container  23  to the container storage portion  22 , the control unit  134  determines that the liquid which is stored in the liquid container  23  is in a pressurizable state in the control condition (1). 
     In other words, in the liquid supply apparatus  112 , when the liquid which is stored in the liquid container  23  assumes a pressurizable state due to the mounting of the liquid container  23  to the container storage portion  22 , and the supply of the liquid to the liquid ejecting apparatus  110  becomes possible due to the mounting of the substitute mounting body  114  to the common mounting portion  141 , the pressurization supply unit  131  starts the driving. 
     When the pressurized air is pumped to the container storage portion  22  by the driving of the pressurization supply unit  131 , the pressure within the container storage portion  22  rises, the liquid storage pouch  70  of the liquid container  23  is crushed by the air pressure, and the liquid of the inner portion of the liquid storage pouch  70  is pressurized. 
     Therefore, the pressurized liquid flows out from the liquid container  23  to the relay flow path  115 , and the pressure of the liquid in the relay flow path  115  rises. 
     When the pressure of the liquid inside the relay flow path  115  rises, since the elastic body which is disposed in the relay flow path  115  compressively deforms, it is confirmed that the liquid inside the liquid container  23  is in the pressurized state based on the detection results of the remaining amount detection unit  137 . Note that, causing the liquid within the liquid container  23  to rise to a pressure at which it is possible to perform pressurized supply of the liquid by driving the pressurization supply unit  131  is referred to as preliminary pressurization. 
     When the preliminary pressurization ends, the control unit  134  transmits a signal indicating that the preliminary pressurization has ended to the main control unit  143  of the liquid ejecting apparatus  110 . The main control unit  143  of the liquid ejecting apparatus  110  which receives the signal controls the pressurization unit  151  to start the supply of the liquid to the liquid ejecting unit  11 , and controls the liquid ejecting unit  11  to perform the printing onto the medium P. Meanwhile, the control unit  134  supplies the liquid which is stored in the liquid container  23  to the substitute mounting body  114  under pressure, assuming that the open-close valve  133  is in the open-valve state. 
     Accordingly, the liquid which is stored in the liquid container  23  is introduced into the storage container  19  by the pressurization force of the pressurization supply unit  131 , and the liquid in the storage container  19  is supplied to the liquid ejecting unit  11  by the pressurization force of the pressurization unit  151 . At this time, even if the drive timing of the pressurization supply unit  131  is shifted from the drive timing of the pressurization unit  151 , the variation in the pressure of the supply flow path  149  which communicates with the liquid ejecting unit  11  is suppressed due to the storage container  19  flexibly deforming. Unnecessary variations in the pressure of the liquid supply path  154  which communicates with the nozzles  153  are suppressed by the effect of the pressure adjustment mechanism  152  which is connected to the supply flow path  149 . Therefore, it is possible to perform the operation of ejecting the liquid from the liquid ejecting unit  11  in a stable manner. 
     Next, description will be given of the operations of the liquid ejecting apparatus  110 , the liquid supply apparatus  112 , the liquid supply method carried out by the liquid supply apparatus  112 , and the liquid supply system  111 , which are configured as described above. 
     In the present embodiment, the liquid container  23  is connected to the liquid ejecting apparatus  110  after undergoing the following procedures (1) to (4). 
     (1) Mount the liquid container  23  to the container storage portion  22 . 
     (2) Attach the first connection portion  135  to the attachment portion  144 . 
     (3) Mount the substitute mounting body  114  to the common mounting portion  141 . 
     (4) Restrict the detachment of the substitute mounting body  114  using the restriction portion  146 . 
     When the procedure (1) is carried out, since the mounting detection unit  117  detects the mounting of the liquid container  23  to the container storage portion  22 , the control condition (1) is satisfied. 
     Next, when the procedure (2) is carried out, since the attachment detection unit  145  detects the attachment of the first connection portion  135  to the attachment portion  144 , the control condition (3) is satisfied. 
     When the procedure (3) is carried out, since the mounting target detection unit  142  detects the mounting of the substitute mounting body  114  to the common mounting portion  141 , the control condition (2) is satisfied. 
     Subsequently, when the procedure (4) is carried out, since the restriction detection unit  147  detects that the restriction portion  146  is in the restriction position, the control condition (4) is satisfied. 
     The control condition (5) is satisfied due to all of the mounting target detection units  142  detecting the mounting of the first liquid storage body  95  or the substitute mounting body  114  to the corresponding common mounting portions  141 . When the control conditions (1) to (5) are satisfied in this manner, the preliminary pressurization is started by the pressurization supply unit  131 . 
     In addition, when the procedure (3) is carried out, since the first connection portion  135  is connected to the second connection portion  125  and the supply needle  148  is connected to the third supply path  124 , the liquid container  23  assumes a state of being capable of communicating with the liquid ejecting unit  11  through the relay flow path  115 , the storage container  19 , the first supply path  122 , the second supply path  123 , the third supply path  124 , and the supply flow path  149 . 
     In other words, when the preliminary pressurization is started by the pressurization supply unit  131 , since the liquid container  23  is in a state of being capable of communicating with the liquid ejecting unit  11 , after the preliminary pressurization is completed, it is possible to quickly start the pressurized supply of the liquid to the liquid ejecting unit  11  by opening the open-close valve  133 . 
     Therefore, the occurrence of a situation in which the preliminary pressurization is performed despite the liquid container  23  not being in a state of being capable of communicating with the liquid ejecting unit  11  due to the liquid container  23  not being mounted to the container storage portion  22 , the first connection portion  135  not being connected to the second connection portion  125 , or the like, resulting in the driving of the pressurization supply unit  131  being performed wastefully is suppressed. 
     Note that, when any of the control conditions (1) to (4) is not satisfied, it is preferable for the control unit  134  to quickly or, after a predetermined time has elapsed, stop the driving of the pressurization supply unit  131 . If such a configuration is adopted, when the liquid container  23  enters a state of being unable to communicate with the liquid ejecting unit  11  due to the liquid container  23  being detached from the container storage portion  22 , the substitute mounting body  114  being detached from the common mounting portion  141 , or the like, since the driving of the pressurization supply unit  131  is stopped, it is possible to suppress the wasteful driving of the pressurization supply unit  131 . 
     Additionally, it is preferable to provide a sensor which detects the opening and closing of the opening and closing door  43  (refer to  FIG. 2 ) of the blown tank  40  (refer to  FIG. 2 ), and that even when the sensor detects that the opening and closing door  43  is open, the driving of the pressurization supply unit  131  is stopped. 
     In this case, even if the control condition (4) is not satisfied, since the substitute mounting body  114  is not necessarily detached from the common mounting portion  141  straight away, the time until the driving of the pressurization supply unit  131  is stopped may be long. Since the substitute mounting body  114  is provided with the storage container  19 , even if the liquid container  23  is detached from the container storage portion  22 , it is possible to continue supplying the liquid to the liquid ejecting unit  11  while the liquid which is stored in the storage container  19  remains. 
     Even if a predetermined time elapses from the start of the driving of the pressurization supply unit  131 , it is preferable to stop the driving of the pressurization supply unit  131 , even when the remaining amount detection unit  137  does not confirm that the liquid within the liquid container  23  is in a pressurized state. In this case, since causes such as operational faults of the pressurization supply unit  131 , mounting faults of the liquid container  23 , or the liquid within the liquid container  23  being depleted by the leaking out of the liquid from the liquid container  23  are conceivable, it is preferable to notify the user of the fact using a buzzer, an error display, or the like. 
     In this manner, even if the liquid container  23  is detached, since it is possible to continue supplying the liquid to the liquid ejecting unit  11  while the liquid which is stored within the storage container  19  remains, when the remaining amount detection unit  137  detects that the remaining amount of the liquid which is stored in the liquid container  23  is less than a predetermined value, the exchanging of the liquid container  23  may be performed while continuing the printing. 
     According to the embodiments described above, it is possible to obtain the following effects. 
     (1) When the liquid which is stored in the liquid container  23  enters a pressurizable state and the mounting target detection unit  142  detects the mounting of the substitute mounting body  114  to the common mounting portion  141 , since the pressurization supply unit  131  is driven, it is possible to appropriately supply the liquid which is stored in the liquid container  23  through the relay flow path  115  due to the pressurization supply unit  131  being driven. Meanwhile, when the liquid which is stored in the liquid container  23  is not in the pressurizable state, or when the substitute mounting body  114  is not mounted to the common mounting portion  141 , since the pressurization supply unit  131  is not driven, the wasteful driving of the pressurization supply unit  131  does not occur. Therefore, it is possible to appropriately supply the liquid according to the mounting state of the liquid storage body. 
     (2) When the liquid container  23  is mounted to the container storage portion  22 , since the liquid which is stored in the liquid container  23  is determined to be in the pressurizable state, it is possible to appropriately supply the liquid according to the mounting state of the liquid container  23  to the container storage portion  22 . Meanwhile, when the liquid container  23  is not mounted to the container storage portion  22 , since the pressurization supply unit  131  is not driven, the wasteful driving of the pressurization supply unit  131  does not occur. 
     (3) Since the driving of the pressurization supply unit  131  is started after the attachment detection unit  145  detects the fact that the first connection portion  135  which is provided on the downstream end of the relay flow path  115  is attached to the attachment portion  144  of the common mounting portion  141 , when the liquid is supplied, it is possible to reliably hold the relay flow path  115  in the common mounting portion  141 . 
     (4) The first connection portion  135  is connected to the second connection portion  125  in a state in which the first connection portion  135  is attached to the attachment portion  144  through the process of the substitute mounting body  114  being mounted to the common mounting portion  141 . Therefore, it is possible to confirm the connection between the substitute mounting body  114  and the relay flow path  115  due to the mounting target detection unit  142  detecting the mounting of the substitute mounting body  114  to the common mounting portion  141 . In addition to this detection, the fact that the common mounting portion  141 , the substitute mounting body  114 , and the relay flow path  115  are connected to each other is confirmed by detecting the attachment of the first connection portion  135  to the attachment portion  144 . Therefore, it is possible to appropriately supply the liquid which is stored in the liquid container  23  to the common mounting portion  141  due to the pressurization supply unit  131  being driven after the confirmation. 
     (5) When the restriction detection unit  147  detects that the restriction portion  146  is in the restriction position, since it is conceivable that the substitute mounting body  114  which is mounted to the common mounting portion  141  is restricted from being detached, it is possible to appropriately supply the liquid in a state in which the substitute mounting body  114  is reliably mounted to the common mounting portion  141 . 
     (6) Since the driving of the pressurization supply unit  131  is started when one or more of the first liquid storage bodies  95  or the substitute mounting bodies  114  are mounted to a plurality of the common mounting portions  141 , it is possible to appropriately supply the liquid of the first liquid storage bodies  95  or the liquid containers  23  which are mounted to the plurality of common mounting portions  141 . 
     Note that, the second embodiment may be modified as in the modification examples indicated below.
         A configuration may be adopted in which the liquid ejecting apparatus  110  is provided with the pressurization supply unit  131 , and the pressurization supply unit  131  is driven by the control of the main control unit  143  of the liquid ejecting apparatus  110 .   The first connection portion  135  may be attached to the attachment portion  144  in a non-removable state. In this case, a configuration may be adopted in which the attachment detection unit  145  and the control condition (3) are not provided.   The first connection portion  135  may be directly connected to the substitute mounting body  114  without the attachment portion  144  being provided on the liquid ejecting apparatus  110 . In this case, a configuration may be adopted in which the attachment detection unit  145  and the control condition (3) are not provided.   It is possible to arbitrarily change the number of the common mounting portions  141  to be provided in the liquid ejecting apparatus  110 . For example, a configuration may be adopted in which the liquid ejecting apparatus  110  is provided with one or a plurality of the first liquid storage body mounting portions, to which only the first liquid storage body  95  is mounted, and one or a plurality of the common mounting portions  141 . A configuration may be adopted in which, when only one of the common mounting portions  141  is provided in the liquid ejecting apparatus  110 , it is not necessary to include the control condition (5) in the control conditions for starting the driving of the pressurization supply unit  131 .   The restriction portion  146  may be a cap member which covers the opening of the common mounting portion  141 .   A configuration may be adopted in which the restriction portion  146 , the restriction detection unit  147 , and the control condition (4) are not provided. Even in this case, it is possible to detect the mounting of the substitute mounting body  114  to the common mounting portion  141  using the mounting target detection unit  142 . However, if the restriction portion  146  is provided in the proximity of the common mounting portion  141 , it is possible to reliably insert the substitute mounting body  114  and the first liquid storage body  95  into the inside of the common mounting portion  141  and to subsequently detect the mounting of the substitute mounting body  114  and the first liquid storage body  95 .   The pressurization supply unit  131  which supplies the liquid which is stored in the liquid container  23  under pressure is not limited to pumping pressurized air. For example, the pressurization supply unit  131  may supply the liquid under pressure using the variation in a differential head caused by raising the liquid container  23 , and alternatively, the pressurization supply unit  131  may supply the liquid under pressure by sucking the inside of the liquid container  23 , or crushing the liquid container  23  using a spring or the like.   A configuration may be adopted in which protrusions of different shapes or the like are provided on the substitute mounting body  114  and the first liquid storage body  95 , and the mounting target detection unit  142  detects whether or not the substitute mounting body  114  and the first liquid storage body  95  are mounted by mechanically detecting the protrusions which differ in shape in this manner.   A configuration may be adopted in which the remaining amount detection unit  137  is disposed closer to the substitute mounting body  114  side (the downstream side) than the open-close valve  133 , and is not disposed closer to the liquid container  23  side (the upstream side) than the open-close valve  133 , as illustrated in  FIG. 11 .   The liquid ejecting apparatus may be changed to a so-called full line type of liquid ejecting apparatus which is provided with the liquid ejecting unit  11  which is fixed and is a long shape corresponding to the total width of the medium P. In this case, the print range of the liquid ejecting unit  11  may be rendered to span the entire width of the medium P by disposing, in parallel, a plurality of unit heads in which the nozzles are formed.
 
Alternatively, the print range of the liquid ejecting unit  11  may be rendered to span the entire width of the medium P by disposing multiple nozzles in a single long head so as to span the entire width of the medium P.
   The liquid that is ejected by the liquid ejecting unit  11  is not limited to an ink, and may be, for example, a liquid-state body in which particles of a functional material are dispersed or mixed into a liquid. For example, a configuration may be adopted in which the liquid ejecting apparatus ejects a liquid-state body which contains a material such as an electrode material or a color material (pixel material) in the form of a dispersion or a solution. The electrode material or the color material may be used in the manufacture or the like of liquid crystal displays, Electro-Luminescence (EL) displays, and surface emission displays.   The medium P is not limited to paper, and may be plastic film, thin plate material, or the like, and may also be a fabric used in a textile printing apparatus or the like.       

     The entire disclosure of Japanese Patent Application No. 2014-157603, filed Aug. 1, 2014 is expressly incorporated by reference herein.