Patent Publication Number: US-9834001-B2

Title: Recording apparatus

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     The present application is a Divisional of U.S. patent application Ser. No. 14/297,132 filed on Jun. 5, 2014, which claims priority to Japanese Patent Application No. 2013-118572, filed on Jun. 5, 2013, No. 2013-177663, filed on Aug. 29, 2013, and Japanese Patent Application No. 2013-203486, filed on Sep. 30, 2013, which applications are expressly incorporated by reference herein. 
    
    
     BACKGROUND 
     1. Technical Field 
     The present invention relates to a recording apparatus. 
     2. Related Art 
     In the related art, as one type of recording apparatus, an ink jet type printer has been known which performs printing by ejecting an ink onto a sheet through a recording head. In this ink jet type printer, in order to continuously and stably supply the ink to a printer head when a relatively large amount of printing is performed, a configuration has been proposed which includes an external ink supply device (liquid supply device) in a body separated from a main apparatus body of the ink jet type printer (for example, refer to JP-A-2009-202346). 
     This liquid supply device is provided with an ink pack (liquid container) having large containing capacity. The ink is supplied from the liquid supply device to an ink tank inside a main body of the printer, and the ink is supplied from the ink tank to the printer head. 
     However, since the external ink supply device as described above is arranged in the body completely separated from the main apparatus body of the ink jet type printer, there is a problem in that a large installation space is required. There is also a problem in that the ink pack of the external ink supply device is held in an unstable state. 
     SUMMARY 
     An advantage of some aspect of the invention is to provide a recording apparatus which can be installed without increasing an installation space thereof, even in a case of an ink jet type printer using an ink pack having large containing capacity, and which enables an external ink supply device to be installed in a stabilized posture. 
     The invention can be realized in the following forms or application examples. 
     Application Example 1 
     According to this application example, there is provided a recording apparatus including a recording head that can eject a liquid onto a recording medium, a transport unit that transports the recording medium to the recording head, a housing that contains the recording head and the transport unit, a liquid container that contains the liquid, a holder that is arranged on an outer surface of both sides which are adjacent to an outer surface having an insertion port of the housing, and a supply unit that supplies the liquid into the housing from the liquid container. Each holder has a bottom portion, and is arranged so that the bottom portion is positioned higher than a bottom surface of the housing. 
     According to the application example, the holders each have the bottom portion, and is arranged so that the bottom portion is positioned higher than the bottom surface of the housing. In this manner, it is possible to install even a recording apparatus using the liquid container having large containing capacity, without increasing an installation space for the recording apparatus. 
     Application Example 2 
     In the recording apparatus according to this application example, the same number of the liquid containers may be respectively held by the holder arranged on both sides. 
     According to the application example, the lateral weight balance of the recording apparatus is improved. Application Example 3 
     In the recording apparatus according to this application example, the liquid containers having different numbers may be respectively held by the holder arranged on both sides. 
     According to the application example, depending on types of the liquid, it is possible to change the containing capacity of the liquid which can be supplied to the recording head. 
     Application Example 4 
     In the recording apparatus according to this application example, the multiple liquid containers may be held, and at least one liquid container within the multiple liquid containers may have containing capacity different from that of the other liquid container. 
     According to the application example, depending on types of the liquid, it is possible to change the containing capacity of the liquid which can be supplied to the recording head. 
     Application Example 5 
     In the recording apparatus according to this application example, the multiple liquid containers may include a liquid container containing at least a black liquid, and the liquid container containing the black liquid may have containing capacity larger than that of the other liquid container. 
     According to the application example, it is possible to supply more of the black liquid which is frequently used. 
     Application Example 6 
     The recording apparatus according to this application example may further include a recording medium holding unit that is inserted into the housing and holds the recording medium, and the insertion port that is formed on an outer surface of the housing and into which the recording medium holding unit is inserted. 
     According to the application example, the recording medium holding unit is detachably attached to the housing. 
     Application Example 7 
     In the recording apparatus according to this application example, the liquid container may be a flexible container. 
     According to the application example, the liquid container contracts in response to the consumption of the liquid. Therefore, it is possible to prevent the liquid from not being supplied to the recording head side, which is caused by a negative pressure inside the container in response to the consumption of the liquid. 
     Application Example 8 
     The recording apparatus according to this application example may further include an image forming apparatus that is arranged on the housing and has a reading device having a reading surface for reading a medium. An upper surface of the holder may be arranged so as to be aligned with the reading surface of the image forming apparatus in height. 
     According to the application example, documents are supported on the holder without being partially caught by the side surface of the holder. 
     Application Example 9 
     According to this application example, there is provided a recording apparatus including a recording head that can eject a liquid onto a recording medium, a recording medium holding unit that holds the recording medium, a transport unit that transports the recording medium to the recording head, a housing that contains the recording head and the transport unit and into which the recording medium holding unit is inserted, an insertion port that is formed on an outer surface of the housing and into which the recording medium holding unit is inserted, a liquid container that contains the liquid, a holder that is arranged on at least one outer surface adjacent to an outer surface having the insertion port of the housing and that holds the liquid container, a supply unit that supplies the liquid into the housing from the liquid container, and an external recording medium holding unit that is arranged below the housing and is different from the recording medium holding unit. The holder has a bottom portion, and is arranged so that the bottom portion is positioned lower than a bottom surface of the housing. 
     According to the application example, the holder has the bottom portion, and the bottom portion is arranged so as to be positioned lower than the bottom surface of the housing. In this manner, even when the liquid container is increased in size or even when the number of the liquid containers is increased, it is possible to suppress an increase in size of the recording apparatus which is caused by the increased size of the holder for holding the liquid container. 
     Application Example 10 
     In the recording apparatus according to this application example, the bottom portion of the holder may be arranged so as to be positioned higher than a bottom surface of the external recording medium holding unit. 
     According to the application example, it is possible to decrease the installation area of the recording apparatus. 
     Application Example 11 
     In the recording apparatus according to this application example, the bottom portion of the holder may be arranged so as to be positioned by coinciding with a bottom surface of the external recording medium holding unit. 
     According to the application example, it is possible to increase a volume of the holder. Therefore, it is possible to provide a large liquid container or to increase the number of the liquid containers. 
     Application Example 12 
     In the recording apparatus according to this application example, the multiple external recording medium holding units may be provided, and the bottom portion of the holder may be arranged so as to be positioned higher than the bottom surface of the lowermost external recording medium holding unit. 
     According to the application example, it is possible to decrease the installation area of the recording apparatus. 
     Application Example 13 
     In the recording apparatus according to this application example, the multiple external recording medium holding units may be provided, and the bottom portion of the holder may be arranged so as to be positioned by coinciding with the bottom surface of the lowermost external recording medium holding unit. 
     According to the application example, it is possible to increase the volume of the holder. Therefore, it is possible to provide the large liquid container or to increase the number of the liquid containers. 
     Application Example 14 
     In the recording apparatus according to this application example, the holder may be arranged on an outer surface of both sides which are adjacent to an outer surface having the insertion port of the housing, and the bottom portion of at least any one holder may be arranged so as to be positioned lower than the bottom surface of the housing. 
     According to the application example, it is possible to increase the volume of the both side holders. Therefore, it is possible to provide the large liquid container or to increase the number of the liquid containers. 
     Application Example 15 
     In the recording apparatus according to this application example, a finger hooking portion which holds the recording apparatus may be formed on the bottom surface of the housing which is positioned below the holder, and the holder may not be arranged at a position of the finger hooking portion. 
     According to the application example, it is possible to grasp the finger hooking portion in a state where the holder is mounted on the housing. 
     Application Example 16 
     The recording apparatus according to this application example may further include a reading unit that reads an image drawn on a document mounted on a document table. The uppermost position of the holder may be lower than the position of the document table. 
     According to the application example, operability is good when a user mounts a document on the reading unit or when a document is removed from the reading unit. 
     Application Example 17 
     According to this application example, there is provided a recording apparatus including a recording head that can eject a liquid onto a recording medium, a recording medium holding unit that holds the recording medium, a transport unit that transports the recording medium to the recording head, a housing that contains the recording head and the transport unit, and into which the recording medium holding unit is inserted, an insertion port that is formed on a side surface of the housing and into which the recording medium holding unit is inserted, a liquid container that contains the liquid, a holder that is detachably attached to at least one side surface adjacent to the side surface having the insertion port of the housing, and that stores the liquid container, a support stand that is arranged below the housing and supports the housing; and a supply unit that supplies the liquid into the housing from the liquid container. The holder is arranged over the housing and the support stand. 
     According to the application example, the recording apparatus includes the support stand which is arranged below the housing and supports the housing, and the holder is arranged over the housing and the support stand. In this manner, it is possible to increase the vertical length of the holder. Therefore, it is possible to increase a liquid containing amount of the liquid container contained inside the holder, and it is possible to decrease the length of the width or the depth in the holder. Accordingly, it is possible to suppress the increase in size of the overall recording apparatus including the holder. 
     Application Example 18 
     In the recording apparatus according to this application example, an extension portion extending further outward from a position of the side surface of the housing may be integrally formed in the support stand, and the extension portion supports the holder. 
     According to the application example, the holder can be fixed to the housing via the extension portion. Therefore, the holder and the housing are integrated with each other. 
     Application Example 19 
     In the recording apparatus according to this application example, the holder may be arranged on both sides, the extension portion may extend further outward from the position of the side surface on both sides of the housing, and a bottom portion of the holder arranged on both sides may be supported by the extension portion. 
     According to the application example, both side holders can be fixed to the housing via the extension portion. Therefore, the holders and the housing are integrated with each other. 
     Application Example 20 
     In the recording apparatus according to this application example, the holder may be arranged on both sides, a bottom portion of one holder between the holders respectively arranged on both sides may be supported by the extension portion, and a support which supports the bottom portion of the other holder may be arranged on a lower side of the other holder. 
     According to the application example, one holder is supported by the extension portion in the support stand for supporting the housing. Therefore, one holder can be fixed to the housing, and the other holder is supported by the support to be installed in a stabilized posture. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The invention will be described with reference to the accompanying drawings, wherein like numbers reference like elements. 
         FIG. 1  is an external perspective view of a recording apparatus. 
         FIG. 2  is a perspective view illustrating a state where an automatic document feeder is opened in a recording apparatus. 
         FIG. 3  is a perspective view illustrating an interior of a recording apparatus. 
         FIG. 4  is an enlarged view of a main portion in an interior of a recording apparatus. 
         FIG. 5  is a perspective view illustrating an interior of a container body. 
         FIG. 6  is a side view when a right side wall forming member of a container body is viewed from the inside (left side). 
         FIG. 7  is a perspective view when a left side wall of a housing is viewed from the inside (right side). 
         FIG. 8  is a schematic cross-sectional view illustrating a joining portion between an ink supply device and a housing. 
         FIG. 9  is a perspective view when a recording apparatus is viewed from the left side. 
         FIG. 10  is a perspective view when a container body is viewed from the left side. 
         FIGS. 11A and 11B  are perspective views of an ink container. 
         FIG. 12  is a partially cutaway perspective view illustrating a state when an interior of an ink supply device is viewed from the front side. 
         FIG. 13  is an external perspective view of a recording apparatus where an additional cassette unit is mounted on a lower portion of a main apparatus body. 
         FIG. 14  is a view illustrating a recording apparatus including a lid member in a reading unit. 
         FIG. 15  is a perspective view of a recording apparatus including an ink supply device which contains one ink container. 
         FIG. 16  is a perspective view of a recording apparatus including an ink supply device on both side outer surfaces of a main apparatus body. 
         FIG. 17  is a perspective view of a recording apparatus where a cut-out portion is disposed in a cover of a printing unit. 
         FIG. 18  is a perspective view of a recording apparatus where a through-hole is disposed in a cover of a printing unit. 
         FIG. 19  is a perspective view of a recording apparatus where a connection tube passes through a portion between a cover of a printing unit and a housing. 
         FIG. 20  is a perspective view illustrating a portion of a connection tube which passes through a cut-out portion disposed between a reading unit and a printing unit. 
         FIG. 21  is a perspective view illustrating a portion of a connection tube which passes through a gap forming member disposed between a reading unit and a printing unit. 
         FIG. 22  is an external perspective view of a recording apparatus including an ink supply device on both right side and left side of a main apparatus body. 
         FIG. 23  is a perspective view illustrating an ink container contained in a frame. 
         FIGS. 24A and 24B  are perspective views of an ink supply device including a cover where an upper portion, a side surface portion, a front surface portion and a rear surface portion are partially integrated. 
         FIG. 25  is an external perspective view of a recording apparatus in Embodiment 2. 
         FIG. 26  is a view when a recording apparatus is viewed from a front surface side in a state where an automatic document feeder is detached therefrom. 
         FIG. 27  is a perspective view of a recording apparatus in a state where a lid body of an ink supply device is detached therefrom. 
         FIG. 28  is a perspective view of an ink container. 
         FIG. 29  is a perspective view of a recording apparatus in a state where an upper portion of a housing is detached therefrom. 
         FIG. 30A  is an external perspective view illustrating a side portion including an ink supply device in Embodiment 3,  FIG. 30B  is a view when the side portion including the ink supply device is viewed from the front, and  FIG. 30C  is a view illustrating a schematic configuration of a locking mechanism. 
         FIGS. 31A to 31C  are schematic views for illustrating a position of a case. 
         FIGS. 32A and 32B  are external perspective views of a recording apparatus in Embodiment 4. 
         FIG. 33  is a perspective view of a recording apparatus in a state where an upper portion of a housing is detached therefrom. 
         FIG. 34  is a perspective view of an ink container. 
         FIG. 35A  is an external perspective view of a case,  FIG. 35B  is a view when a portion where a case is mounted on a housing is viewed from a front surface side, and  FIG. 35C  is a cross-sectional view illustrating a portion where a protruding portion of a support stand is inserted into a recess disposed in a support. 
         FIG. 36  is an external perspective view of a recording apparatus in Embodiment 5. 
         FIG. 37  is an external perspective view of a recording apparatus in Embodiment 6. 
         FIGS. 38A to 38F  are perspective views of a case whose height is changed. 
     
    
    
     DESCRIPTION OF EXEMPLARY EMBODIMENTS 
     Embodiment 1 
     Hereinafter, an embodiment of a recording apparatus will be described with reference to the drawings. 
     As illustrated in  FIGS. 1 and 2 , an ink jet type printer (hereinafter, referred to as a printer)  11  serving as the recording apparatus includes a main apparatus body  14  having a printing unit  12  which forms an image by ejecting an ink (liquid) and a reading unit  13  serving as an image reading unit which reads a document G (medium), and an ink supply device  15  serving as an example of a liquid supply device which supplies the ink to the printing unit  12 . The reading unit  13  is arranged on the printing unit  12 . 
     The reading unit  13  has a reading surface  13   a  which reads the document G on an upper end thereof. An automatic document feeder  16  is arranged on the reading unit  13  so as to be capable of opening/closing the reading surface  13   a . The automatic document feeder  16  sequentially feeds the multiple stacked documents G onto the reading surface  13   a  while reversing the documents G one by one. 
     As illustrated in  FIGS. 2 and 3 , the ink supply device  15  is attached to a left side of the main apparatus body  14 . The ink supply device  15  is attached to a left side wall of the main apparatus body  14  so that a bottom wall forming member  50  is positioned higher than a bottom surface of the main apparatus body  14 . In this manner, the ink supply device  15  is arranged in a state where the bottom wall forming member  50  is separated from an installation surface. Therefore, there is no possibility that an installation area for the printer  11  may increase. 
     The ink supply device  15  includes multiple (four in the present embodiment) ink containers  17  having a substantially rectangular shape which serve as an example of a liquid container containing the ink, and a case  18  which serves as an example of a holder holding the respective ink containers  17 . The case  18  includes a container body  20  having a bottomed rectangular box shape which has an opening  19  for containing the respective ink containers  17  on an upper end and is long in a longitudinal direction, and a lid body  21  covering the opening  19  so as to be openable and closeable. Both of the container body  20  and the lid body  21  are configured to have a synthetic resin material. 
     Four ink containers  17  are arranged side by side in the longitudinal direction inside the container body  20 . These four ink containers  17  respectively contain a cyan ink, a magenta ink, a yellow ink and a black ink, sequentially from a rear side to a front side. In this case, the ink container  17  of the black ink frequently used is arranged on the front most side inside the container body  20 . 
     The case  18  is detachably attached to a left side surface of the printing unit  12  (main apparatus body  14 ) so that an upper surface of the case  18  is aligned with the reading surface  13   a  in height in a state where the lid body  21  is closed. Here, in the specification, the description of “aligned in height” means that heights are the same as each other, and in addition, also includes a case where a difference in the heights falls within 2 cm. Then, in the embodiment, the height of the case  18  is lower than the height of the reading surface  13   a  by 5 mm. 
     As illustrated in  FIGS. 1 and 3 , the printing unit  12  includes a housing  25  having a substantially rectangular parallelepiped shape which is long in a lateral direction. A transport path  26  which supports a sheet P serving as an example of a target (to be described later) is disposed in a central portion inside the housing  25 . A carriage  27  reciprocally movable in the lateral direction which is a main scanning direction is disposed above the transport path  26 . 
     A recording head  28  ejecting the ink is supported inside the carriage  27  so as to be exposed from a lower surface of the carriage  27 . The recording head  28  opposes the transport path  26 . Then, the recording head  28  ejects the ink through multiple nozzles (not illustrated) onto the sheet P transported on the transport path  26  from a rear side to a front side while the carriage  27  moves in the lateral direction, thereby performing printing on the sheet P. 
     In a lower side of the transport path  26  inside the housing  25 , an opening  30  is disposed in a central lower portion of a front surface of the housing  25 . The opening  30  is an insertion port through which a sheet cassette  29  serving as a recording medium holding unit which can contain the multiple sheets P in a stacked state is detachably attached to the housing  25 . The sheet P inside the sheet cassette  29  is fed on the transport path  26  from the rear side by a sheet feeding mechanism (not illustrated) while being reversed one by one. 
     Then, the sheet P printed on the transport path  26  is sequentially discharged through a sheet discharge port  31  which is configured to be positioned at a further upper side region than the sheet cassette  29  in the opening  30 . On an upper side of the sheet cassette  29 , a sheet discharge tray  32  which sequentially supports the sheet P sequentially discharged from the sheet discharge port  31  is disposed in a stretchable manner in the longitudinal direction. 
     As illustrated in  FIGS. 3 and 4 , a left end portion inside the housing  25  includes a holder case  34  having a rectangular box shape whose front side is opened, and multiple (four in the embodiment) hollow ink supply needles  35  which are disposed on a bottom wall (rear wall) inside the holder case  34  and are arranged side by side in the lateral direction. 
     The respective ink supply needles  35  extend in the longitudinal direction and penetrate a side wall of the holder case  34 . One end side of a flexible ink supply tube  36  is connected to a rear end portion of each of the ink supply needles  35 , and the other end side of the ink supply tube  36  is connected to the recording head  28 . The printing unit  12  of the embodiment is configured so that the cyan ink, the magenta ink, the yellow ink, and the black ink are respectively supplied to these four ink supply needles  35  sequentially from the left side to the right side. 
     Then, based on colors of the ink, an arrangement order of the respective ink supply needles  35  from the left side to the right side in the holder case  34  is the same as an arrangement order of the respective ink containers  17  from the rear side to the front side inside the container body  20 . Furthermore, the respective ink containers  17  and the respective ink supply needles  35  are connected to each other by flexible connection tubes  37  serving as an example of a flow path member configuring a portion of the ink supply device  15 , so as to correspond to the supplied ink of each color. 
     A valve body (not illustrated) is disposed in an upper portion of the ink container  17 . The valve body is operated by being rotated in a direction of pressing a cap  87  downward, thereby allowing a communicating state between an interior of the ink container  17  and the connection tube  37 . 
     Therefore, the respective inks supplied to the respective ink supply needles  35  from the respective ink containers  17  of the ink supply device  15  via the respective connection tubes  37  are supplied to the recording head  28  via the ink supply tubes  36 . 
     Next, a configuration of the case  18  will be described in detail. 
     As illustrated in  FIGS. 2 and 3 , the lid body  21  of the case  18  forms a lidded rectangular box shape which has an opening  40  on the container body  20  side, which is long in the longitudinal direction, and which is shallower than the container body  20 . The lid body  21  is connected to an upper end portion on a rear surface of the container body  20  via a hinge portion  41  in  FIG. 5 . Therefore, when being operated for opening/closing, the lid body  21  is pivotally moved about a fulcrum of the hinge portion  41 . That is, the lid body  21  is opened from the front side of the container body  20 , and is closed on the front side of the container body  20 . The lid body  21  is configured so that the opening  40  is aligned with the opening  19  in a state where the opening  19  of the container body  20  is closed. 
     As illustrated in  FIGS. 3 and 5 , the container body  20  having a bottomed rectangular box shape includes a right side wall  45  serving as a wall opposing the printing unit  12 , a left side wall  46  opposing the right side wall  45 , a rear side wall  47  and a front side wall  48  which are orthogonal to the right side wall  45  and the left side wall  46 , and a bottom wall  49  which is orthogonal to the right side wall  45 , the left side wall  46 , the rear side wall  47 , and the front side wall  48 . 
     Then, the opening  19  is disposed on a side opposing the bottom wall  49 . That is, the opening  19  opposes the bottom wall  49 , and is formed above the bottom wall  49  in a gravitational direction. Then, in the embodiment, the right side wall  45 , the left side wall  46 , the rear side wall  47 , and the front side wall  48  respectively configure a first side wall, a second side wall, a third side wall, and a fourth side wall. A distance between the right side wall  45  and the left side wall  46  in the container body  20  is shorter than a width of an upper end side (one end side) of the ink container  17 . 
     The container body  20  includes a bottom wall forming member  50  having a bottomed rectangular box shape which forms the bottom wall  49 , a right side wall forming member  51  which forms the right side half of the side wall and has a plate shape curved in a substantially U-shape, a left side wall forming member  52  which forms the left side half of the side wall and has a plate shape curved in a substantially U-shape, and a rectangular frame-shaped edge member  53  where a lower side configuring an peripheral edge portion of the opening  19  is an opened hollow portion. 
     Then, the container body  20  is configured by combining the right side wall forming member  51  serving as an example of a division member, and the left side wall forming member  52  serving as an example of a division member. That is, the side wall of the container body  20  is configured by combining the right side wall forming member  51  and the left side wall forming member  52  which are two division members divided laterally. 
     A vertical width of the left side wall forming member  52  is slightly wider than a vertical width of the right side wall forming member  51 . Therefore, steps  54  are respectively formed at a position corresponding to a contact portion between the left side wall forming member  52  and the right side wall forming member  51  in a lower end portion of the edge member  53  and an upper end portion of the bottom wall forming member  50 . 
     The left side wall forming member  52  is configured to have a transparent synthetic resin material. Therefore, the respective ink containers  17  contained inside the container body  20  are visibly checked through the left side wall forming member  52  from the outside of the container body  20 . 
     As illustrated in  FIGS. 3 and 5 , a right protruding portion  55  protruding inward (leftward) is formed corresponding to the number of the ink containers  17  on a right inner side surface of the edge member  53 . In the embodiment, the ink has four colors, and the ink container  17  arranged on the rearmost side does not need the right protruding portion  55 . Accordingly, three right protruding portions  55  are formed. The respective right protruding portions  55  are arranged so as to be equally spaced in the longitudinal direction. The respective right protruding portions  55  form a substantially lidded triangular box shape whose lower side is opened, so as to match with a shape of respective tongue-piece portions  70  to  72  (to be described later, refer to  FIG. 6 ). In this case, the respective right protruding portions  55  form a substantially triangular shape when viewed from above. Between two sides of the protruding triangular shape, the rear side is shorter than the front side. 
     Right recesses  56  serving as an example of a support portion supporting the ink container  17  in a support member  92  (to be described later, refer to  FIGS. 11A and 11B ) are respectively formed at an overlapping position on a front side of the respective right protruding portions  55  on the upper surface of the edge member  53  and a right rear corner portion. These four right recesses  56  are arranged so as to be equally spaced in the longitudinal direction, and form a shape so as to match with a partial shape of the support member  92 . A cut-out recess  56   a  is formed in a central portion on the bottom surface of the respective right recesses  56 . 
     Cut-out portions  57  serving as an example of an insertion portion extending upward from the lower end are formed in the vicinity of a right front corner portion on the rear side surface in the respective right protruding portion  55  and the right inner side surface of the edge member  53 . The connection tubes  37  of the respective ink containers  17  side can be respectively inserted into these four cut-out portions  57 . The respective cut-out portions  57  are arranged so as to be equally spaced in the longitudinal direction. 
     A left protruding portion  58  protruding inward (rightward) is formed corresponding to the number of the ink containers  17  on a left inner side surface of the edge member  53 . In the embodiment, the ink has four colors, and the ink container  17  arranged on the front most side does not need the left protruding portion  58 . Accordingly, three left protruding portions  58  are formed. The respective left protruding portions  58  are arranged at positions slightly shifted forward from the respective right protruding portions  55  in the longitudinal direction. The respective left protruding portions  58  are arranged so as to be equally spaced in the longitudinal direction. The respective left protruding portions  58  form a substantially lidded triangular box shape whose lower side is opened. In this case, the respective left protruding portions  58  form a substantially triangular shape when viewed from above. Between two sides of the protruding triangular shape, the rear side is longer than the front side. 
     Left recesses  59  serving as an example of a support portion supporting the ink container  17  in the support member  92  (to be described later, refer to  FIGS. 11A and 11B ) are respectively formed at an overlapping position on a rear side of the respective left protruding portions  58  on the upper surface of the edge member  53  and a left front corner portion. These four left recesses  59  are arranged so as to be equally spaced in the longitudinal direction, and form a shape so as to match with a partial shape of the support member  92 . A cut-out recess  59   a  is formed in a central portion on the bottom surface of the respective left recesses  59 . Then, the respective left recesses  59  oppose the respective right recesses  56  in a direction intersecting the lateral direction by an angle of less than 90 degrees (30 degrees in the embodiment). 
     As illustrated in  FIGS. 6 and 7 , a container side insertion hole  61  serving as an example of an insertion portion into which the respective connection tubes  37  can be inserted is formed at a position near the front in an upper end portion on an inner side surface of the right side wall forming member  51 . The right side wall forming member  51  is attached to a left side wall  25   a  of the housing  25  from the inner side of the container body  20  by using multiple (six in the embodiment) screws  62 . 
     In this case, as illustrated in  FIGS. 7 and 8 , the right side wall forming member  51  is fastened together with two rectangular-shaped sheet metal members  63  which are arranged in the left side wall  25   a  and inside the left side wall  25   a  so as to be equally spaced in the longitudinal direction, by using six screws  62 , thereby being attached to the left side wall  25   a  of the housing  25 . 
     As illustrated in  FIG. 9 , a housing side insertion hole  64  into which the respective connection tubes  37  are inserted is formed at a position corresponding to the container side insertion hole  61  on the left side wall  25   a  of the housing  25 . Then, as illustrated in  FIGS. 4 and 6 , the respective connection tubes  37  whose downstream end side is connected to the respective ink supply needles  35  are inserted into the housing side insertion hole  64  and the container side insertion hole  61 , and an upstream end side of the respective connection tubes  37  is arranged inside the container body  20 . 
     In a state where the ink supply device  15  is attached thereto, the housing side insertion hole  64  is not exposed. Accordingly, it is possible to suppress degradation in appearance of the printer  11 . 
     As illustrated in  FIG. 10 , a first tube support portion  65  having an L-plate shape which supports one connection tube corresponding to the black ink out of the respective connection tubes  37  inserted into the container side insertion hole  61  is disposed at a position from the lower side over to the front side of the container side insertion hole  61  on an inner side surface of the right side wall forming member  51 , so as to be adjacent to the container side insertion hole  61 . On the rear side of the container side insertion hole  61  in the upper end portion on the inner side surface of the right side wall forming member  51 , four plate-shaped ribs extending parallel to each other in the longitudinal direction are horizontally protruded leftward so as to be equally spaced in the vertical direction. 
     These four ribs are configured so that front ends thereof are aligned with each other, and serve as a first rib  66 , a second rib  67 , a third rib  68 , and a fourth rib  69 , sequentially from below to above. The length of the first rib  66  in the longitudinal direction is shorter than the length of the second rib  67 , and the length of the second rib  67  in the longitudinal direction is shorter than the length of the third rib  68 . The length of the third rib  68  in the longitudinal direction is the same as the length of the fourth rib  69 . 
     In the rear end of the first rib  66 , the second rib  67 , and the third rib  68 , the first tongue-piece portion  70 , the second tongue-piece portion  71 , and the third tongue-piece portion  72  which serve as an example of a plate-shaped support portion largely and horizontally protruding further inward (leftward) than these ribs  66  to  68  are respectively formed integrally with each other. The first to third tongue-piece portions  70  to  72  suppress the hanging-down of the respective connection tubes  37  by supporting the end portion of the respective ink containers  17  side in the respective connection tubes  37 . The respective tongue-piece portions  70  to  72  are arranged so as to be equally spaced from each other in the longitudinal direction, and the width in the lateral direction becomes wider as it goes rearward. In this case, the respective tongue-piece portions  70  to  72  are arranged so as to correspond to the respective right protruding portions  55  (refer to  FIG. 5 ) of the edge member  53 . The respective tongue-piece portions  70  to  72  are covered by the above-described respective right protruding portions  55 . 
     Between the first tongue-piece portion  70  and the container side insertion hole  61  in the longitudinal direction of the upper end portion of the inner side surface of the right side wall forming member  51 , a pair of through-holes  77  serving as an example of a supplement portion is formed so as to interpose the first to fourth ribs  66  to  69  therebetween in the vertical direction. Between the first tongue-piece portion  70  and the second tongue-piece portion  71  in the longitudinal direction of the upper end portion of the inner side surface of the right side wall forming member  51 , a pair of through-holes  77  is formed so as to interpose the second to fourth ribs  67  to  69  therebetween in the vertical direction. 
     Between the second tongue-piece portion  71  and the third tongue-piece portion  72  in the longitudinal direction of the upper end portion of the inner side surface of the right side wall forming member  51 , a pair of through-holes  77  is formed so as to interpose the third rib  68  and the fourth rib  69  therebetween in the vertical direction. A wire  78  is caused to pass through the respective pair of through-holes  77  so as to form an annular shape, and end portions of the wire  78  are connected to each other. In this manner, the respective connection tubes  37  are reliably held. 
     Next, a configuration of the ink container will be described in detail. As illustrated in  FIG. 11A , the respective ink containers  17  include an ink bag  90  serving as an example of a liquid containing portion for containing the ink. A support member (hanger member)  92  configuring a liquid container support portion supported by the container body  20  (refer to  FIG. 5 ) is attached to the upper end side (one end side) in the ink bag  90 . That is, the ink bag  90  engages with the support member  92 . 
     The ink bag  90  is formed by welding peripheral edges of two flexible films  90   a  in a state where a cylindrical ink outlet portion (not illustrated) is interposed between the outer peripheral edges of the two rectangular-shaped flexible films  90   a . That is, the ink bag  90  is a bag body configured to have the flexible films  90   a  serving as two opposing flexible walls, and is formed so that the two opposing flexible films  90   a  are caused to come close to each other by consumption of the ink contained inside thereof. In the embodiment, a flexible portion is configured to have the two flexible films  90   a  configuring the ink bag  90 . 
     In this manner, the ink bag  90  contracts in response to the consumption of the ink. Therefore, it is possible to prevent the ink from not being supplied to the recording head  28  side, which is caused by a negative pressure inside the ink bag  90  in response to the consumption of the ink. 
     The support member  92  of the respective ink containers  17  includes a first support member  105  and a second support member  106  which are attached to an upper end portion of the ink bag  90  so as to mutually interpose the upper end portion therebetween. Cylindrical-shaped convex portions  123  inserted into an ink bag through-hole (not illustrated) formed in the ink bag  90  are respectively protruded in both end portions in the second support member  106 . An engagement cut-out recess  130  engaging with the convex portion  123  inserted into the ink bag through-hole is formed in the second support member  106 . 
     Next, an operation when the respective ink containers  17  internally filled with the ink are set in the case  18  will be described. As illustrated in  FIGS. 3 and 12 , when the respective ink containers  17  are set in the case  18 , the lid body  21  is first opened, and then, the ink container  17  is contained inside the container body  20  via the opening  19  of the container body  20 . At this time, a protruding-piece portion  122  disposed in both end portions of the first support member  105  of the respective ink containers  17  is supported by the right recess  56  and the left recess  59  which oppose each other in a direction obliquely intersecting the lateral direction by an angle of 30 degrees. 
     Then, both end portions of the first support member  105  are respectively inserted into the cut-out recess  56   a  (refer to  FIG. 5 ) and the cut-out recess  59   a  (refer to  FIG. 5 ). In this manner, the respective ink containers  17  are contained in the container body  20  mutually side by side in the longitudinal direction in a state of being detachably supported so as to obliquely intersect the lateral direction by an angle of 30 degrees. In this case, the respective ink containers  17  are in a state of being suspended by the right recess  56  and the left recess  59  of the container body  20  in the support member  92  positioned on the upper end side (one end side). Therefore, the respective ink containers  17  are in a state of floating from the inner bottom surface of the container body  20 . 
     In the respective ink containers  17 , the lower end of the ink bag  90  is lowered (illustrated by the two-dot chain line in  FIG. 12 ) by a reduced thickness in response to the consumption of the ink inside the ink bag  90 . However, even when the ink inside the ink bag  90  is consumed all, the state of floating from the inner bottom surface of the container body  20  is maintained. 
     Then, as illustrated in  FIG. 2 , setting work of the respective ink containers  17  into the case  18  is completed by closing the lid body  21 . If the respective ink containers  17  are set into the case  18 , the inks in the respective ink containers  17  are supplied to the recording head  28  via the respective connection tubes  37 . The respective inks supplied to the recording head  28  are ejected onto the sheet P through the respective nozzles (not illustrated) of the recording head  28  to perform the printing. 
     Then, if the inks of the respective ink containers  17  are consumed by the printing of the sheet P, the ink bag  90  of the respective ink containers  17  is gradually deflated in response to the consumption of the inks. At this time, since the left side wall forming member  52  configuring the container body  20  of the case  18  is transparent, a deflated condition (displacement state) of the ink bag  90  of the respective ink containers  17  inside the case  18  is visibly checked from outside of the case  18  through the left side wall forming member  52  without opening the lid body  21 . 
     In this case, in particular, the left side wall forming member  52  occupies not only the majority of the left side surface of the container body  20 , but also the majority of the left half on the front side surface and the rear side surface of the container body  20 . The respective ink containers  17  are arranged side by side in the longitudinal direction so as to be parallel to each other in a state of being tilted so that the left side ink container is positioned at the further front side than the right side ink container inside the case  18 . 
     Therefore, the deflated condition of the ink bag  90  of all the ink containers  17  inside the case  18  is visibly checked from the front side of the case  18  (from outside of the case  18 ). Accordingly, it is possible to estimate the replacement time for the respective ink containers based on the deflated condition of the ink bag  90  in the respective ink containers  17 . 
     The above-described printer  11  includes the recording head  28  which can eject the ink onto the sheet P, the transport unit which transports the sheet P to the recording head  28 , the housing  25  which contains the recording head  28  and the transport unit, the case  18  which is arranged on the outer side surface of the housing  25  so that the bottom wall forming member  50  is positioned higher than the bottom surface of the housing  25 , and which serves as the holder for holding the ink container  17  containing the ink, and the supply unit (connection tube  37 ) which supplies the ink from the ink container  17  to the recording head  28 . 
     According to this configuration, there is provided the case  18  which is arranged on the outer side surface of the housing  25  so that the bottom wall forming member  50  is positioned higher than the bottom surface of the housing  25 , and which holds the ink container  17  containing the ink. In this manner, it is possible to install even the printer  11  using the ink container  17  having the large containing capacity without increasing the installation space for the printer  11 . 
     In the present embodiment, the ink supply device  15  having the case  18  is provided on the left side surface (one outer side adjacent to the outer side surface having the opening  30  which is the insertion port of the housing  25 ) of the main apparatus body  14 . However, the ink supply device may be provided which has the case holding the ink container  17  on the right side surface (the other outer side adjacent to the outer side surface having the opening  30 ) of the main apparatus body  14 . 
     At least one ink container  17  out of the multiple ink containers  17  may have the containing capacity different from that of the other ink container  17 . According to this configuration, depending on types of the liquid, it is possible to change the containing capacity of the liquid which can be supplied to the recording head. 
     For example, the multiple ink containers  17  include the ink container  17  containing at least the black ink, and the ink container  17  containing the black ink has the containing capacity larger than that of the other ink container  17 . According to this configuration, it is possible to supply the recording head  28  with the more of the black ink frequently used. 
     The bottom wall forming member  50  of the case  18  may be arranged at a position higher than the bottom surface of the housing  25  by 50 mm. In this manner, in a state where the recording media such as the sheets are stacked one on another up to less than 50 mm, the recording media can be partially placed on the lower portion of the case  18  by being stacked thereon. Therefore, the installation area for the printer  11  including the recording media placed on the left side of the main apparatus body  14  can be reduced. 
     In the ink container  17 , both end portions of the support member  92  are not necessarily supported and suspended by the right recess  56  and the left recess  59  of the case  18 . That is, the ink container  17  may be contained in a state of being placed on the inner bottom surface of the case  18 . In this case, the inner bottom surface (bottom wall  49 ) of the case  18  functions as a support portion for supporting the ink container  17 . 
     A hard support portion having a shape which can be supported by the right recess  56  and the left recess  59  of the case  18  may be disposed in the upper end portion (one end side which is the cap  87  side) of the ink bag  90  of the ink container  17 , as a liquid container support portion instead of the support member  92 . According to this configuration, the ink container  17  can be handled by gripping the support portion. Therefore, it is possible to easily attach and detach the ink container  17  to and from the right recess  56  and the left recess  59  of the case  18 . 
     The ink container  17  is not necessarily supported by the right recess  56  and the left recess  59  of the case  18  via the support member  92 . The distance between the right side wall  45  and the left side wall  46  in the case  18  is not necessarily shorter than the width of the ink container  17 . 
     The case  18  holds the multiple ink containers  17  so as not to be overlapped with each other in the height direction of the housing  25 . In this manner, the ink containers  17  do not get affected by each other, and the ink can be fully used up. 
     The case  18  does not necessarily have the transparent left side wall forming member  52  through which the deflated condition of the ink bag  90  in response to the consumption of the ink inside the ink container  17  is visibly checked. The opening  19  of the case  18  is not necessarily disposed in the upper end of the container body  20 , and may be disposed on a side surface of the container body  20 . 
     The lid body  21  of the case  18  may be omitted. The ink bag  90  is not necessarily configured to entirely have the flexible film  90   a . That is, the ink bag  90  may be configured to have a flexible portion, a portion of which is formed of a flexible material. The material configuring the flexible portion of the ink bag  90  may be transparent or opaque. 
     The side wall of the container body  20  of the case  18  is not necessarily configured by assembling the right side wall forming member  51  and the left side wall forming member  52  which are laterally divided. That is, the side wall of the container body  20  may be configured by assembling three or more divided members, or may be configured to have one undivided member. 
     The through-hole  77  formed in the container body  20  of the case  18  may be omitted. The cut-out portion  57  disposed in the edge member  53  of the case  18  may be omitted. Instead of the cut-out portion  57 , a hole into which the connection tube  37  can be inserted may be disposed in the edge member  53  of the case  18  as an insertion portion. The right side wall forming member  51  and the left side wall forming member  52  which configure the container body  20  may have a plate shape which is bent in an L-shape. 
     The color of the respective caps  87  may be matched with the color of the ink contained in the respective ink containers  17  corresponding to the respective caps  87 . According to this configuration, it is possible to prevent the cap  87  from being erroneously connected to the ink container  17 . 
     In the printer  11 , the case  18  is not necessarily detachably attached to the printing unit  12  of the main apparatus body  14 . That is, the case  18  may be fixedly attached to the printing unit  12  of the main apparatus body  14 . 
     In the printer  11 , the height of the case  18  is not necessarily set to be lower than the height of the reading surface  13   a . That is, the height of the case  18  may be set to be the same as the height of the reading surface  13   a , or may be set to be higher than the height of the reading surface  13   a.    
     Next, an operation when the document G larger than the reading surface  13   a  is read by the reading unit  13  of the printer  11  will be described. 
     As illustrated in  FIG. 2 , when the document G larger than the reading surface  13   a  is read by the reading unit  13 , the automatic document feeder  16  is first opened to expose the reading surface  13   a . Subsequently, the document G is mounted on the reading surface  13   a  so that a region to be read in the document G fits the reading surface  13   a  and a portion of the document G which protrudes from the reading surface  13   a  is partially positioned on the case  18  (on the lid body  21 ). 
     At this time, the height of the case  18  is aligned with the height of the reading surface  13   a . That is, the height of the case  18  is lower than the height of the reading surface  13   a  by 5 mm. 
     Therefore, the document G is supported on the case  18  without being partially caught on the side surface of the case  18 . Then, if the reading unit  13  is operated in a state where the automatic document feeder  16  is closed, the region on the reading surface  13   a  in the document G is read. 
     In this manner, the portion of the document G which protrudes from the reading surface  13   a  is partially supported by the case  18 . Accordingly, the position of the document G is stabilized, thereby enabling the reading unit  13  to accurately read the document G. 
     Modification Example 
     The above-described embodiment may be modified to another embodiment as follows. 
       FIG. 13  is a perspective view of the printer  11  where an additional cassette unit  141  is mounted on a lower portion of the main apparatus body  14 . As illustrated in  FIG. 13 , in the printer  11 , the additional cassette unit  141  having an additional sheet cassette  140  may be mounted on the lower portion of the main apparatus body  14 . 
       FIG. 14  is a view when the printer  11  including a lid member  146  in the reading unit  13  is viewed from the front. As illustrated in  FIG. 14 , in the printer  11 , the automatic document feeder  16  may be replaced with the lid member  146  which can open and close the reading surface  13   a . The reading unit  13  may be omitted, and the lid member  146  may be configured so that the upper surface of the printing unit  12  is opened. 
       FIG. 15  is a perspective view of the printer  11  including an ink supply device  15   a  containing one ink container  17   a .  FIG. 11B  illustrates the ink container  17  in  FIG. 3  and the ink container  17   a  having a size larger than that of the ink container  17 . The configuration of the ink container  17   a  is the same as the configuration of the ink container  17  having a different size. 
     As illustrated in  FIG. 15 , if the printer  11  is a monochromatic printer in which the printing unit  12  uses only the black ink, the printer  11  may include the ink supply device  15   a  in which one ink container  17   a  containing the black ink is arranged. In this case, the ink container  17   a  is contained so that the width direction thereof becomes the longitudinal direction. In  FIG. 15 , the lid body  21  which covers the opening  19  so as to be openable and closeable is omitted. 
       FIG. 16  is a perspective view of the printer  11  including respective ink supply devices  15   a  and  15   b  on both side outer surfaces in the lateral direction of the main apparatus body  14 . As illustrated in  FIG. 16 , the ink supply devices  15   a  and  15   b  may be configured to be respectively arranged on the left side surface and the right side surface of the main apparatus body  14 . In this case, the ink container  17   a  containing the black ink is arranged in the ink supply device  15   a  arranged on the right side surface of the main apparatus body  14 , and the ink containers  17  respectively containing the cyan ink, the magenta ink, and the yellow ink are arranged in the ink supply device  15   b  arranged on the right side surface of the main apparatus body  14 . Similar to the ink supply device  15   a , the connection tube  37  for supplying the ink from the ink supply device  15   b  to the recording head  28  is arranged. 
     According to this configuration, it is possible to increase the containing capacity of the respective ink containers  17  containing the cyan ink, the magenta ink, and the yellow ink which are contained in the right side ink supply device  15   b . The ink container  17   a  containing only the black ink is arranged in the left side ink supply device  15   a . Accordingly, it is possible to increase the containing capacity of the ink container  17   a  containing the black ink which is frequently used. 
     On the other hand, the ink supply device containing the ink containers  17  respectively containing the cyan ink, the magenta ink, and the yellow ink may be arranged on the left side, and the ink supply device containing the ink container  17   a  containing the black ink may be arranged on the right side. The outer diameter dimensions in the ink supply device  15   a  and the ink supply device  15   b  may be substantially the same as each other, or may be different from each other. 
     The ink supply devices  15   a  and  15   b  are respectively attached to the left side wall and the right side wall of the printing unit  12  so that the bottom wall forming member  50  is positioned higher than the printing unit  12 . In this manner, the ink supply devices  15   a  and  15   b  are arranged in a state where similar to the bottom wall forming member  50  in  FIG. 1 , the bottom wall forming member is away from the installation surface. Accordingly, even in a configuration where the ink supply devices  15   a  and  15   b  are respectively arranged on both sides of the printing unit  12 , the installation area (ground contact area) for the printer  11  is not increased. 
       FIG. 17  is a perspective view of the printer  11  in which a cut-out portion  330  is disposed in a cover  33  of the printing unit  12 . As illustrated in  FIG. 17 , the cut-out portion  330  is disposed in a left side end portion of the cover  33 . The cover  33  is provided above the sheet discharge tray  32  so as to be pivotally movable. 
     The ink may be supplied from the ink supply device  15  to the recording head  28  contained inside the housing of the printing unit  12  via the connection tube  37  passing through a gap formed by the cut-out portion  330 .  FIG. 18  is a perspective view of the printer  11  in which a through-hole  331  is disposed in the cover  33  of the printing unit  12 . 
     As illustrated in  FIG. 18 , the through-hole  331  is disposed in the left side end portion of the cover  33 . The cover  33  is provided so as to be pivotally movable in a state where the connection tube  37  passes through the through-hole  331 . The ink may be supplied from the ink supply device  15  to the recording head  28  contained inside the housing of the printing unit  12  via the connection tube  37  passing through a gap formed by the through-hole  331 . 
       FIG. 19  is a perspective view of the printer  11  in which the connection tube  37  passes between the cover  33  and the housing of the printing unit  12 . As illustrated in  FIG. 19 , the cover  33  which is an openable and closeable member is fixed by a tape-like adhesive member  332  serving as a fixing member, in a state of being slightly opened and interposing the connection tube  37  between the housing of the printing unit  12  and the cover  33 . The ink may be supplied from the ink container  17  to the recording head  28  contained inside the housing  25  via the connection tube  37  passing through a gap between the cover  33  and the housing of the printing unit  12 . 
     According to this configuration, the housing  25  or the cover  33  does not need to be processed. The ink is supplied from the ink container  17  arranged outside the housing  25  to the recording head  28  contained inside the housing  25 . 
       FIG. 20  is a perspective view illustrating a portion of the connection tube  37  passing through a cut-out portion  38  disposed between the reading unit  13  and the printing unit  12 . The reading unit  13  is provided so as to be pivotally movable with respect to the printing unit  12 , and also functions as a lid portion of the printing unit  12 . In the embodiment, the reading unit  13  also serves as the lid portion of the printing unit  12 , but the lid portion may be a simple lid having no function as the reading unit. 
     As illustrated in  FIG. 20 , the cut-out portion  38  is disposed in a left side upper end portion of the housing  25  of the printing unit  12 . In a state where the reading unit  13  closes the printing unit  12 , a gap is formed by the cut-out portion  38 . The connection tube  37  passes through the cut-out portion  38 , and the ink is supplied from the ink supply device  15  to the recording head  28  via the connection tube  37 . 
       FIG. 21  is a perspective view illustrating a portion of the connection tube  37  passing through a gap forming member  39  disposed between the reading unit  13  and the printing unit  12 . The reading unit  13  is provided so as to be pivotally movable with respect to the printing unit  12 . 
     As illustrated in  FIG. 21 , the gap forming member  39  is disposed in the left side upper end portion of the housing  25  of the printing unit  12 . In a state where the reading unit  13  closes the printing unit  12 , a gap is formed by the gap forming member  39 . The connection tube  37  passes through a through-hole  39   a  of the gap forming member  39 , and the ink is supplied from the ink supply device  15  to the recording head  28  via the connection tube  37 . 
     In this manner, there is no possibility that the connection tube  37  may be deformed by being interposed and pressed between the reading unit  13  and the housing  25 . Accordingly, there is no possibility that the flow of the ink inside the connection tube  37  may be suppressed. 
       FIG. 22  is a perspective view of the printer  11  including ink supply devices  15  and  15   c  on both lateral sides of the main apparatus body  14 . As illustrated in  FIG. 22 , the ink supply device  15  may be provided on the left side of the main apparatus body  14 , and the ink supply device  15   c  may be provided on the right side of the main apparatus body  14 . Similar to the ink supply device  15 , the multiple ink containers  17  are contained inside a case  18   a  of the ink supply device  15   c.    
     A lid body  21   a  and a container body  20   a  which configure the case  18   a  are configured to be laterally symmetric with the lid body  21  and the container body  20  which configure the case  18 . That is, a left side wall forming member  51   a , a right side wall forming member  52   a , and a bottom wall forming member  50   a  which configure the container body  20   a  are configured to be laterally symmetric with the right side wall forming member  51 , the left side wall forming member  52 , and the bottom wall forming member  50  which configure the container body  20 . 
     Similar to the left side wall forming member  52 , the right side wall forming member  52   a  is configured to have a transparent synthetic resin material. Therefore, the respective ink containers  17  contained inside the container body  20   a  are visibly checked from outside of the container body  20   a  through the right side wall forming member  52   a.    
     Similar to the ink supply device  15 , the ink supply device  15   c  is attached to the right side wall of the main apparatus body  14  so that the bottom wall forming member  50   a  is positioned higher than the bottom surface of the main apparatus body  14 . 
     The configuration of arranging the container bodies  20  and  20   a  on both sides of the main apparatus body  14  can increase the number of the ink containers  17 . Accordingly, it is possible to increase the containing capacity for the ink. Furthermore, since the ink containers  17  containing the ink with the ink colors of light cyan and light magenta can be arranged, it is possible to increase the number of the ink colors. 
     The ink containers  17  may be held in the container bodies  20  and  20   a  arranged on both sides of the main apparatus body  14  so as to respectively have the same number of the ink containers  17 . According to this configuration, the lateral weight balance of the printer  11  is improved. 
     Multiple ink containers  17  may be held in one container body  20  ( 20   a ), and the containing capacity of at least one ink container  17  out of the multiple ink containers  17  may be different from that of the other ink container  17 . According to this configuration, depending on each color of the ink (types of the liquid), it is possible to change the containing capacity of the ink which can be supplied to the recording head  28 . 
       FIG. 23  is a perspective view illustrating the ink container  17  contained in a frame  160 . Both end portions of a first support member  105  disposed in the upper portion of the ink container  17  are supported by an upper end surface  161  of the frame  160 . The frame  160  is attached to a side surface of the main apparatus body  14 . As described above, a holder for holding the ink container  17  may be configured to have the frame  160 . 
       FIGS. 24A and 24B  are perspective views of an ink supply device  150  including a cover  152  where an upper portion and a side surface portion are integrated with each other. The ink supply device  150  in  FIG. 24A  is provided so as to be pivotally movable in an arrow direction about a fulcrum  153  serving as a pivotal movement fulcrum with respect to a containing box  154 .  FIG. 24A  illustrates a closed state of the cover  152 , and  FIG. 24B  illustrates an opened state of the cover  152 . In  FIG. 24B , the ink container  17  is not illustrated. 
     In the cover  152  of  FIG. 24B , an upper portion  152   c , a side surface portion  152   b , a front surface portion  152   a , and a rear surface portion  152   d  are integrated with one another. That is, the upper portion  152   c  is connected to the side surface portion  152   b . The side surface portion  152   b  is connected to the front surface portion  152   a  formed from the center to the left side in the front surface section. The side surface portion  152   b  is connected to the rear surface portion  152   d  formed from the center to the left side in the rear surface section. The upper portion  152   c , the side surface portion  152   b , the front surface portion  152   a , and the rear surface portion  152   d  may be configured by connecting separate members. 
     The front surface portion  151   a  of the cover  151  covers the right half of the front surface of the containing box  154 , and the rear surface portion  151   b  of the cover  151  covers the right half of the rear surface of the containing box  154 . The containing box  154  having a rectangular box shape which contains the ink container  17  is disposed inside the covers  151  and  152 . The containing box  154  functions as a holder for holding the ink container  17 . 
     The cover  152  has the upper portion  152   c  of the containing box  154  in a closed state, the side surface portion  152   b  which is connected from the upper portion  152   c  to the lower portion, the front surface portion  152   a , and the rear surface portion  152   d , and is provided so as to be pivotally movable with respect to the containing box  154 . 
     According to this configuration, when the cover  152  is in an opened state, a range for exposing the containing box  154  is increased. In this manner, the relevant work is facilitated when the ink container  17  is contained in the containing box  154  or when the ink container  17  is removed from the containing box  154 . 
     Embodiment 2 
     Embodiment 2 will be described with reference to the drawings.  FIG. 25  is an external perspective view of an ink jet type printer (hereinafter, referred to as a printer)  411  serving as a recording apparatus in Embodiment 2. The printer  411  includes a main apparatus body  414  having a printing unit  412  which forms an image by ejecting the ink (liquid) and a reading unit  413  which reads the document G (medium), and ink supply devices  415   a  and  415   b  which supply the ink to the printing unit  412 . The ink supply device  415   a  is attached to the left side of the main apparatus body  414 , and the ink supply device  415   b  is attached to the right side of the main apparatus body  414 . 
     The reading unit  413  is arranged on the printing unit  412 . A document table (not illustrated) formed of a transparent plate-shaped member such as glass is provided in the reading unit  413 , and thus, it is possible to read the document G mounted on the document table. An automatic document feeder  416  connected to an upper end portion on a rear surface of the reading unit  413  via a hinge portion (not illustrated) is arranged on the reading unit  413 . The automatic document feeder  416  can read the document G by sequentially feeding the document G onto a reading window (not illustrated) formed of a transparent plate-shaped member such as the glass while reversing multiple stacked documents G one by one. 
     A sheet cassette  429  is disposed in an opening  430  formed on the front surface side of the housing  425  so as to be inserted and removed in the longitudinal direction. The opening  430  is an insertion port through which the sheet cassette  429  is detachably attached to the housing  425 . A sheet discharge tray  432  is disposed on an upper side of the sheet cassette  429  so as to be stretchable in the longitudinal direction. 
     Multiple sheets in a stacked state are mounted on the sheet cassette  429 . The sheets mounted on the sheet cassette  429  are supplied into the housing  425  one by one, and the printed sheet is discharged from a sheet discharge port  431  to be mounted on the sheet discharge tray  432 . 
     An additional cassette unit  541  is provided under the housing  425 . A sheet cassette  540  which can be inserted and removed in the longitudinal direction is disposed in the additional cassette unit  541 . 
     A configuration of a case  418  of the ink supply devices  415   a  and  415   b  will be described in detail. A lid body  421  of the case  418  is configured so that a container body  420  side is open, and forms a bottomed rectangular box shape which is long in the longitudinal direction and is shallower than the container body  420 . The lid body  421  is connected to an upper end portion on a rear surface of the container body  420  via a hinge portion (not illustrated). Therefore, when opened and closed, the lid body  421  is pivotally moved about the hinge portion serving as the fulcrum. That is, the lid body  421  is opened from the front side of the container body  420 , and is closed on the front side of the container body  420 . 
     The container body  420  includes a bottom wall forming member  450  having a bottomed rectangular box shape, an inner side wall forming member  451  which forms the inner half of the side wall (half of the main apparatus body  414  side in the lateral direction) and has a plate shaped bent in a substantially U-shape, an outer side wall forming member  452  which forms the outer half of the side wall (half opposite side to the main apparatus body  414  side in the lateral direction) and has a plate shaped bent in a substantially U-shape, and an edge member  453  which configures a peripheral edge portion of the opening, is hollow, and forms a rectangular frame shape. 
     The container body  420  is configured by combining the inner side wall forming member  451  serving as an example of a divided member and the outer side wall forming member  452  serving as an example of a divided member. That is, the side wall of the container body  420  is configured by combining the inner side wall forming member  451  and the outer side wall forming member  452  which are two divided members. 
     A locking mechanism  422  is disposed on the front surface side of the lid body  421  and the edge member  453  of the ink supply devices  415   a  and  415   b . The locking mechanism  422  can maintain a closed state of the lid body  421  with respect to the container body  420  by using a so-called padlock  460 . 
       FIG. 26  is a view when the printer  411  is viewed from the front surface side in a state where the automatic document feeder  416  is removed from the state illustrated in  FIG. 25 . 
     A broken line  413   a  indicates a position in the height direction of the document table on which the document G is mounted. In a closed state of the lid body  421 , the ink supply devices  415   a  and  415   b  are provided so that a position of an upper end  421   a  of the lid body  421  is the same as a position of the broken line  413   a  of a reading surface (document table) in the height direction, or is lower than a position of the broken line  413   a.    
     This configuration allows a user to enjoy good operability in an operation where the user lifts up and pivotally moves the automatic document feeder  416  in  FIG. 25 , opens the document table, mounts the document G on the document table, causes the reading unit  413  to read the image of the document G, and then removes the document G from the document table. If the size of the document G is so big as to protrude from the document table, the document G protruding particularly in the lateral direction of the document table does not interfere with the ink supply devices  415   a  and  415   b , thereby providing the good operability. If the height of the upper surface of the ink supply devices  415   a  and  415   b  is set to be substantially the same as the height of the document table, the protruding document G can be supported, and thus, it is possible to prevent the damage of the document G which is caused by the document G being bent. 
       FIG. 27  is a perspective view of the printer  411  in a state where the lid body  421  of the ink supply devices  415   a  and  415   b  is removed. One ink container  417   a  containing a monochrome ink is provided in the ink supply device  415   a  so as to be attachable thereto and detachable therefrom. Three ink containers  417   b  respectively containing the yellow, magenta, and cyan inks are provided in the ink supply device  415   b  so as to be attachable thereto and detachable therefrom. The ink containing capacity of the ink which can be contained in the ink container  417   a  is larger than the ink containing capacity of the ink which can be contained in the ink container  417   b . The three ink containers  417   b  have substantially the same ink containing capacity. 
       FIG. 28  is a perspective view of the ink containers  417   a  and  417   b . The ink containers  417   a  and  417   b  include an ink bag  490  for containing the ink. A support member (hanger member)  492  is fixedly attached to an upper end side in the ink bag  490 . That is, the ink bag  490  engages with the support member  492 . 
     The ink bag  490  is formed by welding peripheral edges of two flexible films  490   a  in a state where a cylindrical ink outlet portion (not illustrated) is interposed between the peripheral edges of the two rectangular flexible films  490   a.    
     The support member  492  of the ink containers  417   a  and  417   b  includes a first support member  505  and a second support member  506  which are attached to an upper end portion of the ink bag  490  so as to mutually interpose the upper end portion therebetween. Cylindrical convex portions  523  inserted into an ink bag through-hole (not illustrated) formed in the ink bag  490  are respectively protruded in both end portions in the second support member  506 . Engagement cut-out recesses  530  respectively engaging with the convex portions  523  inserted into the ink bag through-hole are formed in the second support member  506 . 
     The three ink containers  417   b  hold a protruding piece  522  in a recess (not illustrated) inside the container body  420  in a posture where the longitudinal direction of the first support member  505  is tilted to the lateral direction by a certain angle (for example, 30 degrees). 
     A valve body (not illustrated) is disposed in the upper portion of the ink containers  417   a  and  417   b , the valve body is operated by rotating a cap  487  in a pressing-downward direction, thereby allowing a communication state between the inside of the ink containers  417   a  and  417   b  and connection tubes  437   a  and  437   b.    
     A depth length in the case  418  of the ink supply device  415   a  is shorter than a depth length in the case  418  of the ink supply device  415   b . Positions of the front surface side end portion of the ink supply device  415   a  and the ink supply device  415   b  are substantially the same as each other in the longitudinal direction. However, a position of the rear surface side of the ink supply device  415   a  is in front of a position of the rear surface side of the ink supply device  415   b . Therefore, the ink supply device  415   a  is not arranged in the left side rear surface portion of the housing  425 . 
     According to this configuration, a user can easily carry out connection work when a plug (not illustrated) for supplying AC power which is connected to a power code is connected to a plug receiver (not illustrated) disposed in the left side rear surface portion of the housing  425 . 
     A width length L 1  in the case  418  of the ink supply device  415   a  is shorter than a width length L 2  in the case  418  of the ink supply device  415   b , and a height dimension in the case  418  of the ink supply device  415   a  is shorter than a height dimension in the case  418  of the ink supply device  415   b . In this way, the case  418  of the ink supply device  415   a  has a size different from that of the case  418  of the ink supply device  415   b.    
       FIG. 29  is a perspective view of the printer  411  in a state where an upper portion of the housing  425  is removed. The printing unit  412  includes the housing  425  which is laterally long and has a substantially rectangular shape. A transport path  426  supporting the sheet P serving as the recording medium is disposed in a central portion inside the housing  425 . A carriage  427  reciprocally movable in the lateral direction which is a main scanning direction is disposed above the transport path  426 . 
     A recording head  428  ejecting the ink is supported inside the carriage  427  so as to be exposed from a lower surface of the carriage  427 . The recording head  428  opposes the transport path  426 . The recording head  428  ejects the ink through multiple nozzles (not illustrated), onto the sheet P which is transported from the rear side to the front side on the transport path  426  while the carriage  427  is moved in the lateral direction, thereby performing the printing on the sheet P. 
     A sheet cassette  429  is provided on the lower side of the transport path  426  inside the housing  425 . The sheet P inside the sheet cassette  429  is fed from the rear side onto the transport path  426  by a sheet feeding mechanism (not illustrated) while being reversed one by one. 
     The sheet P printed on the transport path  426  is sequentially discharged from the sheet discharge port  431  in  FIG. 25 , which is configured to be positioned in a further upper side region than the sheet cassette  429  in an opening  430 . 
     A holder case  434  whose front side is open and which forms a rectangular box shape is disposed in a left end portion inside the housing  425 . Four hollow ink supply needles (not illustrated) juxtaposed in the lateral direction are provided inside the holder case  434 . 
     Each ink supply needle extends in the longitudinal direction and passes through a side wall of the holder case  434 . One end side of a flexible ink supply tube  436  is connected to a rear end portion of each ink supply needle, and the other end side of the ink supply tube  436  is connected to the recording head  428 . 
     One end side of one flexible connection tube  437   a  is connected to a front end portion of the ink supply needle, and the other end side of the connection tube  437   a  is connected to an ink container  417   a  contained in the ink supply device  415   a  (refer to  FIG. 27 ). 
     One end side of three flexible connection tubes  437   b  is connected to the front end portion of each ink supply needle, and the other end side of the connection tubes  437   b  is connected to each ink container  417   b  contained in the ink supply device  415   b  (refer to  FIG. 27 ). 
     A valve body (not illustrated) is disposed in an upper portion of the ink containers  417   a  and  417   b . The valve body is operated by rotating a cap  487  in a pressing-down direction, thereby allowing a communication state between the inside of the ink containers  417   a  and  417   b  and the connection tubes  437   a  and  437   b.    
     Therefore, a monochrome ink is supplied to the recording head  428  from the ink container  417   a  contained in the ink supply device  415   a  via the connection tube  437   a , the ink supply needle, and the ink supply tube  436 . 
     The color inks of the yellow ink, the magenta ink, and the cyan ink are respectively supplied to the recording head  428  from the ink containers  417   b  contained in the ink supply device  415   b  via the connection tube  437   b , the ink supply needle, and the ink supply tube  436 . 
     The sheet cassette  429  in the embodiment configures a recording medium holding unit, the ink containers  417   a  and  417   b  configure a liquid container, the case  418  configures a holder, and an additional cassette unit  541  configures an external recording medium holding unit. 
     As described above, the printer  411  of the embodiment includes the recording head  428  which can eject the ink onto the sheet P, the sheet cassette  429  which holds the sheet P, the transport unit which transports the sheet P to the recording head  428 , the housing  425  which contains the recording head  428  and the transport unit and into which the sheet cassette  429  is inserted, the insertion port (opening  430 ) which is formed on the outer side surface of the housing  425  and into which the sheet cassette  429  is inserted, the ink containers  417   a  and  417   b  which contain the ink, the case  418  which is arranged on at least one outer side surface adjacent to the outer side surface having the opening  430  of the housing  425  and holds the ink container, and the supply unit (including at least the connection tubes  437   a  and  437   b ) which supplies the ink into the housing  425  from the ink container. The case  418  has a bottom portion  450   a  in  FIG. 26 , and the bottom portion  450   a  is arranged to be positioned lower than a bottom surface  425   a  of the housing  425 . 
     According to this configuration, even when the ink containers  417   a  and  417   b  are increased in size or the number of the ink containers  417   a  and  417   b  is increased, it is possible to suppress the increase in the size of the case  418  holding the ink containers  417   a  and  417   b , and to suppress the increase in the size of the printer  411 . 
     The bottom portion  450   a  of the case  418  is arranged so as to be positioned higher than the bottom surface of the additional cassette unit  541 . This can decrease the installation area of the printer  411 . 
       FIGS. 31A to 31C  are views when printers  700 ,  700   a , and  700   b  are viewed from the front surface side, and are schematic views for illustrating positions of the case. The printer  700  in  FIG. 31A  has a reading unit  701  and a printing unit  702 . A bottom portion  704   a  of a case  704  (holder) may be arranged at a position coincident with a bottom surface  703   a  of an additional cassette unit  703  (external recording medium holding unit). 
     This can increase the containing capacity of the case  704 . Accordingly, it is possible to provide the printer  700  with larger ink containers  417   a  and  417   b  (liquid containers), or to increase the number of the ink containers  417   a  and  417   b.    
     As illustrated in  FIG. 31B , the printer  700   a  may have multiple additional cassette units  703  and  705 , and a bottom portion  706   a  of a case  706  may be arranged so as to be positioned higher than a bottom surface  705   a  of the lowermost additional cassette unit  705 . This configuration can decrease the installation area of the printer  700   a.    
     As illustrated in  FIG. 31C , the printer  700   b  has the multiple additional cassette units  703  and  705 , and a bottom portion  707   a  of a case  707  may be arranged at a position coincident with the bottom surface  705   a  of the lowermost additional cassette unit  705 . 
     This configuration can increase the containing capacity of the case  707 . Accordingly, it is possible to provide the printer  700   b  with larger ink containers  417   a  and  417   b , or to increase the number of the ink containers  417   a  and  417   b.    
     In the embodiment, the bottom portion  450   a  of both side cases  418  is arranged so as to be positioned lower than the bottom surface  425   a  of the housing  425 . However, the bottom portion  450   a  of one side case  418  may be arranged so as to be positioned lower than the bottom surface  425   a  of the housing  425 . 
     The sheet cassette  429  and the sheet cassette  540  in the embodiment have a containing size different from each other. In this manner, it is possible to respectively contain the sheets having different sizes. 
     The sheet cassette  429  and the sheet cassette  540  may have the same containing size. In this manner, it is possible to respectively contain the sheets having the same size. 
     Embodiment 3 
     In Embodiment 2, the case  418  has been described in which the pivotal axis of the lid body  421  is disposed on the rear surface side and the front surface side is open. However, in Embodiment 3, a case will be described in which the pivotal axis extending in the longitudinal direction is disposed in the lower portion of the lid body and the side surface side of the housing is open. 
       FIG. 30A  is an external perspective view illustrating a portion of a side including an ink supply device  610  according to Embodiment 3.  FIG. 30B  is a view when a portion of the side including the ink supply device  610  is viewed from the front surface side. A case  609  of the ink supply device  610  is configured to have a container body  607  and a lid body  608 . 
     As illustrated in  FIG. 30B , the lid body  608  is pivotally moved in the arrow direction, about a pivotal axis  616  serving as a fulcrum, which is disposed in the lower portion in the lid body  608  and whose axial direction extends in the longitudinal direction. In this manner, the right side of the lid body  608  is provided so as to be openable. 
     A main apparatus body  603  is configured to have a reading unit  601  and a printing unit  602 . An eaves portion  604  protruding rightward from a wall surface of a housing  605  containing the printing unit  602  is formed on a right side of the reading unit  601 . That is, as illustrated in  FIG. 30B , the eaves portion  604  is positioned at a position overlapping with the container body  607  in the lateral direction. This can suppress the increase in the size of the printer  600 . 
     In the lid body  608 , the lower portion has a thickness thinner than that of the other portions, and the lid body  608  has a shape whose lower portion is narrowed. A convex portion  611  protruding outward in a convex shape from a narrowed wall surface  612  of the lid body  608  is formed in the lower portion of the narrowed lid body  608 . A protruding amount of the convex portion is the same as that of the other region which is not narrowed. In other words, the narrowed region causes the convex portion to relatively have a protruding shape. A concave portion (not illustrated) formed along the shape of the convex portion  611  is formed on an inner side wall surface of the lower portion of the lid body  608 . This enables the concave portion to hold one end side of the lower portion of the ink container (refer to  FIG. 28 ) contained in the container body  607 . 
     A transparent member  613  having transparency is disposed in the lid body  608 . This functions as a window through which the ink container contained in the container body  607  is visibly checked. Therefore, deflated conditions of the ink bag of all the ink containers inside the case  609  are visibly checked from the front side of the case  609  (from outside of the transparent member  613 ). Therefore, based on the deflated conditions of the ink bag  490  of each ink container, it is possible to estimate the replacement time for each ink container. 
     An opening/closing lever  614  used when the lid body  608  is opened and closed is disposed in the lid body  608  in  FIG. 30A . The opening/closing lever  614  is disposed at a position between multiple ink containers contained in the container body  607 . The opening/closing lever  614  includes a locking mechanism for fixing the container body  607  and the lid body  608  to be in a closed state, and a structure such as a hook (not illustrated), thereby requiring an installation space for these. Even in this case, the opening/closing lever  614  is disposed at the position between the multiple ink containers contained in the container body  607 , thereby enabling the width length of the case  609  to be shortened. 
     A locking mechanism  615  which can maintain the lid body  608  to be in the closed state is provided in the lid body  608  and the container body  607 .  FIG. 30C  illustrates a schematic configuration of the locking mechanism  615 . The locking mechanism  615  is configured to have a so-called cylinder lock. 
     A holding member  617  is provided in the upper portion of the lid body  608 . A pivotal movement member  618  is provided in the holding member  617  so as to be pivotally movable. A lever  619  is provided in an end portion of the pivotal movement member  618 . If a user inserts a key  621  into an opening of the pivotal movement member  618  and pivotally moves the key  621 , the lever  619  is pivotally moved and engages with an engagement portion  620  disposed in the container body  607 . In this manner, the lid body  608  is in a state of closing the container body  607 . 
     An additional cassette unit  606  is provided below the housing  605 , separately from a sheet cassette (not illustrated) removably inserted into an insertion port of the housing  605 . The lower end portion of the case  609  is positioned at a position below a bottom surface  605   a  of the housing  605 , and the lower end portion of the case  609  is positioned at a position above a bottom surface  606   a  of the additional cassette unit  606 . 
     A concave finger hooking portion  622  which is long in the longitudinal direction is disposed in a right side corner portion of the bottom surface  606   a  of the additional cassette unit  606 . The finger hooking portion  622  is disposed at a position which is not vertically overlapped with the lid body  608  and the container body  607 . In a state where the ink supply device  610  is mounted on the housing  605 , a user grips the finger hooking portion  622 . In this manner, the user can move the printer by lifting up the printer  600  in a state of holding the additional cassette unit  606  and the main apparatus body  603  on which the additional cassette unit  606  is mounted. The finger hooking portion  622  is clearly shown. Accordingly, it is possible to prevent damage to the ink supply devices  615   a  and  615   b  which is caused by erroneous holding of the ink supply devices  615   a  and  615   b  when moved. 
     Embodiment 4 
     Embodiment 4 will be described with reference to the drawings.  FIG. 32A  is an external perspective view when an ink jet type printer (hereinafter, referred to as a printer)  801  serving as a recording apparatus according to Embodiment 4 is viewed from the front surface left side. The printer  801  includes a printing unit  803  which forms an image by ejecting the ink (liquid), a reading unit  802  which reads a document (not illustrated), and cases  805  and  806  serving as a holder. The main apparatus body is configured to have the printing unit  803  and the reading unit  802 . 
     The case  805  is detachably attached to a side surface  804   c  on the left side of a housing  804  in the main apparatus body, and the case  806  is detachably attached to a side surface  804   b  on the right side of the housing  804 . An ink container  830  (refer to  FIG. 34 ) serving as a liquid container which contains the ink is stored in the cases  805  and  806 . The case  805  stores one ink container  830  which contains the monochrome ink. The case  806  stores three ink containers  830  which respectively contain the color inks of the yellow ink, the magenta ink, and the cyan ink. 
     The reading unit  802  is arranged on the printing unit  803 . The reading unit  802  includes a document table (not illustrated) formed of a transparent plate-shaped member such as glass, and can read the document mounted on the document table. An automatic document feeder  828  connected to an upper end portion on a rear surface of the reading unit  802  via a hinge portion (not illustrated) is arranged on the reading unit  802 . The automatic document feeder  828  can read the document by sequentially feeding the document onto a reading window (not illustrated) formed of a transparent plate-shaped member such as the glass while reversing multiple documents stacked on a document mounting unit one by one. 
     An opening  813  is formed on a side surface  804   a  on the front surface side of the housing  804 . In a lower side region in the opening  813 , a sheet cassette  812  serving as recording medium holding unit is removably inserted in the longitudinal direction. That is, the lower side region in the opening  813  serves as an insertion port for detachably attaching the sheet cassette  812  to the housing  804 . A transport path  811  through which a sheet (not illustrated) printed inside the printing unit  803  is transported is disposed on the upper side of the sheet cassette  812 . A sheet discharge port for the printed sheet is formed in an upper side region in the opening  813 . 
     Multiple sheets in a stacked state are mounted on the sheet cassette  812 . The sheets mounted on the sheet cassette  812  are supplied into the housing  804  one by one. The printed sheet is discharged from the sheet discharge port formed on the upper side in the opening  813 , and is mounted on a sheet discharge tray (not illustrated). 
     An operation button  810  for switching on and off power or for setting printing conditions or reading conditions is provided on the front surface side of the main apparatus body. A display unit  819  configured to have a liquid crystal panel for displaying the printing conditions or the reading conditions is provided on the front surface side of the main apparatus body. 
     A support stand  890  is provided on the lower side of the housing  804  and the case  805  so as to be attachable to and detachable from the housing  804  and the case  805 . The support stand  890  is configured to have a main body portion  890   b  and extension portion  890   a  extending leftward from the main body portion  890   b . The main body portion  890   b  and the extension portion  890   a  are formed integrally with each other. The extension portion  890   a  extends further outward from a position of the side surface  804   c  of the housing  804 . 
     The main body portion  890   b  is positioned on the lower side of the housing  804  to support the housing  804 . The extension portion  890   a  is positioned on the lower side of the case  805  to support the case  805 . A stepped portion is formed between the main body portion  890   b  and the extension portion  890   a . The extension portion  890   a  is formed to be lower than the main body portion  890   b.    
     Therefore, the position of the bottom surface of the case  805  is lower than the position of the bottom surface of the housing  804 , and the position of the bottom surface of the case  805  is lower than the position of the upper end of the main body portion  890   b  in the support stand  890 . That is, the case  805  is arranged over the housing  804  and the support stand  890 . 
     A support  891  is provided on the lower side of the case  806  so as to be attachable to and detachable from the case  806 . The support  891  is formed separately from the support stand  890 . The height of the support surface of the support  891  is lower than that of the main body portion  890   b . Therefore, the position of the bottom surface of the case  806  is lower than the position of the bottom surface of the housing  804 , and the position of the bottom surface of the case  806  is lower than the position of the upper end of the main body portion  890   b  in the support stand  890 . That is, the case  806  is arranged over the housing  804  and the support stand  890 . 
     The position of the upper surface of the cases  805  and  806  is positioned at a position below the document table of the reading unit  802 . In this manner, when a user pivotally moves the automatic document feeder  828  to leave the document table in an exposed state, and places the document on the document table, or removes the document from the document table, the cases  805  and  806  do not hinder the user. 
     A finger hooking portion  895  serving as a first finger hooking portion is formed in a left side bottom portion of the extension portion  890   a . The finger hooking portion  895  is a cut-out portion which is cut out so that a corner portion of the bottom portion of the extension portion  890   a  extends to be long in the longitudinal direction. A user can put and hook the user&#39;s several fingers into the finger hooking portion  895  in a state where the user&#39;s palm faces upward. 
       FIG. 32B  is an external perspective view when the printer  801  is viewed from the front surface right side. A finger hooking portion  896  serving as a second finer hooking portion is formed in a right side bottom portion of the support  891 . The finger hooking portion  896  is a cut-out portion which is cut out so that a corner portion of the bottom portion of the support  891  extends to be long in the longitudinal direction. A user can put and hook several fingers into the finger hooking portion  896  in a state where the user&#39;s palm faces upward. 
     A cut-out portion extending in the lateral direction is also formed in a front side bottom portion of the main body portion  890   b  of the support stand  890 , thereby configuring a finger hooking portion  890   c  for hooking the user&#39;s fingers. A cut-out portion extending in the lateral direction is also formed in a rear side bottom portion of the main body portion  890   b  of the support stand  890 , thereby configuring a finger hooking portion (not illustrated) for hooking the user&#39;s fingers. 
       FIG. 33  is a perspective view of the printer  801  in a state where the upper portion of the housing  804  is removed. A carriage  821  reciprocally movable in the lateral direction which is the main scanning direction is disposed above a transport path  811 . A recording head  820  ejecting the ink is provided inside the carriage  821  so as to be exposed from the lower surface of the carriage  821 . 
     A reversing unit (not illustrated) which reverses the sheet is provided in the printer  801 . The sheet P inside the sheet cassette  812  provided on the lower side of the transport path  811  is fed from the rear side onto the transport path  811  while being reversed one by one by the reversing unit. 
     The printer  801  includes a transport unit configured to have a transport roller and a sheet feeding motor (both of these are not illustrated). The sheet P is transported from the rear side to the front side along the transport path  811  by the transport unit. The ink is ejected onto the transported sheet P through the recording head  820  which is provided in the carriage  821  and is reciprocally moved, thereby performing the printing on the sheet P. 
     As described above, the sheet P printed on the transport path  811  is sequentially discharged from a sheet discharge port configured to have a further upper side region from the sheet cassette  812  in the opening  813 . 
     Four hollow ink supply needles (not illustrated) juxtaposed in the lateral direction are provided inside a holder case  824  whose front side is open and which forms a rectangular box shape. 
     Each ink supply needle extends in the longitudinal direction, and passes through a side wall of the holder case  824 . One end side of a flexible ink supply tube  825  is connected to a rear end portion of each ink supply needle, and the other end side of the ink supply tube  825  is connected to the recording head  820 . 
     One end side of one flexible connection tube  822  is connected to a front end portion of the ink supply needle, and the other end side of the connection tube  822  is connected to an ink container  830  contained in the case  805  (refer to  FIG. 34 ). 
     One end side of three flexible connection tubes  823  is connected to the front end portion of each ink supply needle, and the other end side of the connection tubes  823  is connected to each ink container  830  contained in the case  806  (refer to  FIG. 34 ). 
       FIG. 34  is a perspective view of the ink container  830 . The ink container  830  includes an ink bag  833  containing the ink. A support member (hanger member)  832  is fixed to the upper end side in the ink bag  833 . 
     The ink bag  833  is formed by welding peripheral edges of two flexible films in a state where a cylindrical ink outlet portion (not illustrated) is interposed between the peripheral edges of the two rectangular flexible films. 
     A valve body (not illustrated) is disposed in an upper portion of the ink container  830 . The valve body is operated by rotating a cap  831  in a pressing-down direction, thereby allowing a communication state between the inside of the ink container  830  and connection tubes  822  and  823 . 
     A monochrome ink is supplied to the recording head  820  from the ink container  830  contained in the case  805  in  FIG. 33  via the connection tube  822 , the ink supply needle, and an ink supply tube  825 . The color inks of the yellow ink, the magenta ink, and the cyan ink are respectively supplied to the recording head  820  from the ink containers  830  contained in the case  806  via the connection tube  823 , the ink supply needle, and an ink supply tube  825 . 
       FIG. 35A  is an external perspective view of the case  806 . The case  806  includes a storage portion  835  for storing the ink container  830 . A lower end of the storage portion  835  is fixed to a fixing portion  815 . An upper side of the storage portion  835  is open. Accordingly, a user can attach the ink container  830  to the inside of the storage portion  835 , or can remove the ink container  830  from the inside of the storage portion  835 . 
     A lid body  814  is provided so as to be pivotally movable in the arrow direction, about a pivotal axis  836  serving as a fulcrum, which is illustrated by a dashed line. The housing  804  side of the lid body  814  is opened, and the lid body  814  is pivotally moved from the state in  FIG. 35A  to the closed state in  FIG. 32B . In this manner, the lid body  814  covers the storage portion  835 . The support  891  is provided on the lower side of the fixing portion  815  so as to be attachable and detachable. 
       FIG. 35B  is a view when a portion where the case  806  is mounted on the housing  804  is viewed from the front surface side, illustrates an external shape of the lid body  814  and the storage portion  835  when viewed from the front surface side, and illustrates a cross-sectional view of a portion having a protruding portion  891   b  in the support  891 . 
     The protruding portion  891   b  serving as an engagement portion which protrudes from a side surface  891   a  of the support  891  is disposed on the housing  804  side of the support  891 . A concave portion  890   d  recessed inward from the side surface  804   b  is formed in the main body portion  890   b  of the support stand  890 . 
     The protruding portion  891   b  of the support  891  is inserted into and engages with the concave portion  890   d , and the support  891  is fixed to the support stand  890  by an engagement member such as a screw (not illustrated). In the height direction, the position of the bottom surface of the support  891  is the same as the position of the bottom surface of the support stand  890 . 
       FIG. 35C  is a cross-sectional view illustrating a portion where a protruding portion  890   e  disposed in the main body portion  890   b  of the support stand  890  is inserted into a concave portion  891   c  disposed in the support  891 . In  FIG. 35C , the storage portion  835  is not illustrated. As illustrated in  FIG. 35C , the protruding portion  890   e  disposed in the main body portion  890   b  may be inserted into the concave portion  891   c  disposed in the support  891 , and the support  891  may be configured to engage with the main body portion  890   b  of the support stand  890 . 
     As described above, the printer  801  of the embodiment includes the recording head  820  which can eject the ink onto the sheet P, the sheet cassette  812  which holds the sheet P, the transport unit which transports the sheet P to the recording head  820 , the housing  804  which contains the recording head  820  and the transport unit and into which the sheet cassette  812  is inserted, the opening  813  which is formed on the side surface  804   a  of the housing  804  and into which the sheet cassette  812  is inserted, the ink container  830  which contains the ink, the cases  805  and  806  which are mounted on the side surfaces  804   b  and  804   c  adjacent to the side surface  804   a  having the opening  813  of the housing  804  so as to be attachable and detachable and store the ink container  830 , the support stand  890  which is arranged below the housing  804  and supports the housing  804 , and the supply unit (connection tubes  822  and  823 ) which supplies the ink into the housing  804  from the ink container  830 . The cases  805  and  806  are arranged over the housing  804  and the support stand  890 . 
     According to this configuration, the vertical length of the cases  805  and  806  can be lengthened. Therefore, it is possible to increase the ink containing capacity of the ink container  830  contained inside the cases  805  and  806 , and it is possible to shorten the width length or the depth length of the cases  805  and  806 . Therefore, it is possible to suppress the increase in the overall size of the printer  801  including the cases  805  and  806 . 
     The extension portion  890   a  extending outward from the position of the side surface  804   c  of the housing  804  is integrally formed in the support stand  890 , and the extension portion  890   a  supports the case  805  from below. According to this configuration, the case  805  can be fixed to the housing  804  via the extension portion  890   a . Therefore, the case  805  and the housing  804  are integrated with each other. 
     In the embodiment, the extension portion  890   a  extending to one side of the main body portion  890   b  is formed, but the extension portion extending both sides of the main body portion  890   b  may be formed. That is, the cases  805  and  806  may be respectively arranged on both sides of the housing  804 , and the respective extension portions  890   a  may extend further outward from the position of the side surfaces  804   b  and  804   c  on both sides of the housing  804 . In this manner, the bottom portion of the cases  805  and  806  respectively arranged on both sides may be configured to be supported by the extension portion. 
     According to this configuration, the cases  805  and  806  can be fixed to the housing  804  via the extension portion. Therefore, the cases  805  and  806 , and the housing  804  are integrated with each other. 
     The cases  805  and  806  in  FIG. 32A  are respectively arranged on both sides of the housing  804 , the bottom portion of the case  805  between the cases  805  and  806  respectively arranged on both sides is supported by the extension portion  890   a , and the support  891  which supports the bottom portion of the other case  806  is arranged on the lower side of the case  806 . 
     According to this configuration, the case  805  is supported by the extension portion  890   a  in the support stand  890  supporting the housing  804 . Therefore, the case  805  can be fixed to the housing  804 , and the case  806  is supported by the support  891 , thereby being installed in a stabilized posture. 
     The support  891  in  FIG. 35C  and a portion of the support stand  890  (main body portion  890   b ) are arranged at a position of being overlapped with each other in the height direction. The concave portion  890   d  recessed inward is disposed in the main body portion  890   b . The protruding portion  891   b  serving as the engagement portion which protrudes outward is disposed in the support  891 . The protruding portion  891   b  is inserted into and engages with the concave portion  890   d  of the main body portion  890   b . According to this configuration, the support  891  is fixed to the main body portion  890   b , and the case  806  supported by the support  891  can be integrated with the housing  804 . 
     If a usage amount of the monochrome ink contained in the ink container  830  inside the case  805  is less than a usage amount of the color ink contained in the ink container  830  inside the case  806 , the case  805  supported by the extension portion  890   a  may be smaller than the case  806  supported by the support  891 . According to this configuration, it is possible to suppress the increase in the size of the printer  801 . 
     The finger hooking portion  895  is formed in the support stand  890 . According to this configuration, in a state where the case  805  and the housing  804  are integrated with each other, a user grips the finger hooking portion  895  with the user&#39;s finger. In this manner, the user can move the printer by lifting up the printer  801 . 
     The finger hooking portion  896  is formed in the support  891 . The support  891  is fixed to the support stand  890 . According to this configuration, in a state where the cases  805  and  806  and the housing  804  are integrated with each other, one or more users grip the finger hooking portions  895  and  896  by the user finger or the users fingers. In this manner, the user or the users can move the printer by lifting up the printer  801 . 
     In the height direction, the position of the bottom surface of the support  891  is the same as the position of the bottom surface of the support stand  890 . According to this configuration, the cases  805  and  806  on both sides and the housing  804  can be installed in a stabilized posture. 
     In the ink container  830 , the ink bag  833  is configured to have the flexible film. According to this configuration, the ink bag  833  of the ink container  830  contracts in response to the consumption of the ink. Therefore, it is possible to prevent the ink from not being supplied to the recording head  820  due to the negative pressure generated inside the ink container  830 . 
     Embodiment 5 
     In Embodiment 5, a printer will be described which includes a case on one side of the housing and does not include a case on the other side.  FIG. 36  is an external perspective view of a printer  801   a  according to Embodiment 5. The printer  801   a  in  FIG. 36  has a configuration where the case  806  supported by the support  891  is removed from the configuration of the printer  801  in  FIG. 32B  which has been described in Embodiment 4. 
     A monochrome liquid is contained in the ink container  830  contained in the case  805 . According to this configuration, the printer  801   a  can be used as a dedicated printer using the monochrome ink. The other configurations of the printer  801   a  are the same as the configurations of the printer  801  which have been described in Embodiment 4. 
     Embodiment 6 
       FIG. 37  is an external perspective view of a printer  801   b  according to Embodiment 6. The printer  801   b  includes an additional cassette unit  851  serving as an external recording medium holding unit on the lower side of the main apparatus body configured to have the printing unit  803  and the reading unit  802  in Embodiment 4. The additional cassette unit  851  is configured as a part of the housing  804 . A sheet cassette  850  which can be inserted and removed in the longitudinal direction is disposed in the additional cassette unit  851 . The sheets P are stacked on the sheet cassette  850 , and the sheets P are fed to the printing unit  803  one by one by a feeding unit (not illustrated). 
     A support stand  892  supporting the additional cassette unit  851  and a case  805   a  is provided so as to be attachable and detachable, on the lower side of the additional cassette unit  851  and the case  805   a  serving as a holder. The support stand  892  has a main body portion  892   b  and an extension portion  892   a  extending to the left side of the main body portion  892   b , and these are formed integrally with each other. The extension portion  892   a  extends further outward from the position of the side surface  804   c.    
     The main body portion  892   b  supports the additional cassette unit  851 , and the extension portion  892   a  supports the case  805   a . A stepped portion is formed between the main body portion  892   b  and the extension portion  892   a . The extension portion  892   a  is positioned lower than the main body portion  892   b . Therefore, the position of the bottom surface of the case  805   a  is lower than the position of the bottom surface of the additional cassette unit  851 , and is lower than the upper end of the main body portion  892   b.    
     A support  893  is provided so as to be attachable to and detachable from the case  806   a , on the lower side of the case  806   a  serving as the holder. The support  893  is disposed separately from the support stand  892 . The support  893  is positioned lower than the main body portion  892   b . Therefore, the position of the bottom surface of the case  806   a  is lower than the position of the bottom surface of the additional cassette unit  851 , and is lower than the upper end of the main body portion  892   b.    
     According to this configuration, the cases  805   a  and  806   a  are arranged from the housing  804  over to the support stand  892 . Therefore, since the position of the bottom surface of the cases  805   a  and  806   a  can be lowered, the vertical length of the cases  805   a  and  806   a  can be further lengthened. Therefore, it is possible to further increase the ink containing capacity of the ink container  830  contained inside the cases  805   a  and  806   a.    
     The additional cassette unit  851  and the cases  805   a  and  806   a  may be supported from below by the support stand  890  and support  891  in  FIG. 32A  which have been described in Embodiment 4. According to this configuration, the support stand  890  and the support  891  can be shared in use. Therefore, it is possible to suppress an increase in the manufacturing cost of the printers  801 ,  801   a , and  801   b.    
     A cut-out portion where a corner portion is cut out over the lateral direction is formed in a front side bottom portion of the main body portion  892   b , and functions as a finger hooking portion  892   c  for hooking the user&#39;s fingers. A cut-out portion where a corner portion is cut out over the lateral direction is also formed in a rear side bottom portion of the main body portion  892   b  of the support stand  892 , and functions as a finger hooking portion  892   d.    
     According to this configuration, in a state where the cases  805   a  and  806   a  and the main apparatus body are integrated with each other, one or more users grip the finger hooking portions  892   c  and  892   d  by the user finger or the users fingers. In this manner, the user or the users can move the printer by lifting up the printer. 
       FIGS. 38A to 38D  are perspective views of a case whose height is changed. A case  880  as a holder in  FIG. 38A  has a fixing portion  884  which supports a lid body  883  and a storage portion (not illustrated) containing the lid body  883  and an ink container (not illustrated). The lid body  883  is configured to have an inner side fixing portion  882  and an outer side sliding portion  881 . For example, when the lid body  883  is opened and closed by being pivotally moved in the arrow direction in  FIGS. 35A to 35C , the inner side fixing portion  882  and the outer side sliding portion  881  can be integrally operated. 
     An outer side sliding portion  881  is positioned further outside from the inner side fixing portion  882 , and is provided so as to be vertically slidable with respect to the inner side fixing portion  882 .  FIG. 38B  illustrates a state where the outer side sliding portion  881  in  FIG. 38A  is moved upward. The case  880  in the state in  FIG. 38B  is positioned higher than the case  880  in the state in  FIG. 38A . 
     According to this configuration, it is possible to change the height of the case  880 . Therefore, in accordance with a change in the height of the housing  804  when the housing  804  in  FIG. 32A  is provided with the case  880 , or when the housing  804  in  FIG. 32A  is provided with the additional cassette unit  851  in  FIG. 37 , it is possible to change the height of the case  880  by stretching the lid body  883  of the case  880 . In accordance with the height of the additional cassette unit  851  whose height varies, it is possible to change the height of the case  880  by stretching the lid body  883  of the case  880 . 
     A case  885  as a holder in  FIG. 38C  has a fixing portion  888  which supports a lid body  886  and a storage portion (not illustrated) containing the lid body  886  and an ink container (not illustrated). For example, the lid body  886  is opened and closed by being pivotally moved in the arrow direction in  FIGS. 35A to 35C . A so-called bellows portion  887  which is vertically stretchable is formed in the lid body  886 .  FIG. 38D  illustrates a state where the bellows portion  887  in  FIG. 38C  is extended upward. The case  885  in the state in  FIG. 38D  is positioned higher than the case  885  in the state in  FIG. 38C . 
     A case  900  serving as a holder in  FIG. 38E  has a lid body  901  and a fixing portion  902  supporting the lid body  901 . The lid body  901  is pivotally moved with respect to the case  900 . In this manner, a user can attach or detach an ink container (not illustrated) to or from a storage portion (not illustrated). 
     An intermediate fixing portion  903  in  FIG. 38F  has a rectangular box shape. The case  900  in  FIG. 38F  illustrates a state where the intermediate fixing portion  903  is provided between a lid body  901  and a fixing portion  902 . The lid body  901  is supported so as to be pivotally movable with respect to the intermediate fixing portion  903 . The case  900  in the state in  FIG. 38F  is positioned higher than the case  900  in the state in  FIG. 38E . 
     In this manner, in accordance with the height of the main apparatus body side, it is possible to change the height of the cases  880 ,  885 , and  900 . Therefore, it is not necessary to separately provide the case in accordance with the height of the main apparatus body side. Accordingly, it is possible to suppress the increase in the manufacturing cost of the case.