Patent Publication Number: US-9840079-B2

Title: Recording apparatus

Description:
BACKGROUND 
     1. Technical Field 
     The present invention relates to a recording apparatus that performs recording on a target recording medium. 
     In the present application, the term recording apparatus includes serial printers, in which a recording head performs recording while moving in a predetermined direction, and recording apparatus types such as copy machines and facsimiles that are provided with such printing functions. 
     2. Related Art 
     In recent years, in recording apparatuses such as ink jet printers, large capacity ink accommodation tanks have been provided either inside an apparatus main body or outside the apparatus main body in order to improve a number of sheets of a target recording medium on which recording is possible. JP-A-2012-152994 discloses an example of a recording apparatus that is provided with such a large capacity ink accommodation tank. 
     The recording apparatus that is disclosed in JP-A-2012-152994 is configured so that a carriage, which is inserted onto a carriage guide shaft, is capable of reciprocating motion in an apparatus width direction. In addition, in the carriage, an upper section of the carriage is supported by a guide frame that extends in the apparatus width direction. 
     In the recording apparatus that is disclosed in JP-A-2012-152994, a plurality of large capacity ink tanks are provided on a side surface of the apparatus main body, and ink tubes are connected to the ink tanks. The ink tubes that are connected to the ink tanks extend in the apparatus width direction, and are configured to include a turnback portion on the left side of the carriage in the apparatus width direction with respect to the reciprocating motion of the carriage in the apparatus width direction, and to deform following the reciprocating motion. 
     Given that, increases in the density of nozzles in recording heads, which are provided in carriages, have been achieved for recent improvements in the recording quality on target recording media. More specifically, in the abovementioned recording head, the number of nozzles that discharge an ink onto the target recording medium has been increased. 
     However, in the abovementioned recording head, if the number of nozzles is increased, a required supply amount of the ink to the recording head also increases. Therefore, the diameters of the ink tubes that supply the ink from the ink tank to the carriage, are increased. When a recording head in which the number of nozzles has been increased, is applied to the recording apparatus that is disclosed in JP-A-2012-152994, since the diameters of the ink tubes are large, a tube bending reaction force that occurs in the turnback portion is increased. 
     In this instance, there are cases in which the tube bending reaction force is greater than the dead weight of the carriage. As a result of this, the tube bending reaction force acts in a manner that separates the carriage from the guide frame, and there is a concern that the recording quality on the target recording medium will deteriorate as a result of shifting of impact positions of the ink that is discharged from the recording head, occurring. 
     SUMMARY 
     An advantage of some aspects of the invention is to provide a recording apparatus in which the recording quality on a target recording medium is improved by stabilizing the posture of the carriage. 
     The invention can be realized in the following aspects or application examples. 
     Application Example 1 
     According to this application example, there is provided a recording apparatus includes a recording head that performs recording by discharging a liquid onto a target recording medium, a carriage, on which the recording head is provided, and which is capable of moving along a first direction, a first sliding section that is provided in the carriage, on one side in a second direction, which intersects the first direction, a second sliding section that is provided in the carriage, in an arm section, which extends from the other side in the second direction, protruding in the second direction, a first guide member that extends in the first direction and supports the carriage by coming into contact with the first sliding section, and guides movement of the carriage, a second guide member that extends in the first direction, is disposed at an interval from the first guide member in the second direction, supports the carriage by coming into contact with the second sliding section, and guides the movement of the carriage, a liquid accommodation section that accommodates the liquid, and a tube, which is a tube that supplies the liquid, which is delivered from the liquid accommodation section, to the carriage, extends in a direction that intersects the second direction by extending out from the carriage, and extends in an opposite direction by turning back in a vertical direction, in which the tube extends in the direction that intersects the second direction by passing at least one of above and below the abovementioned arm section. 
     In the present specification, in addition to the first direction, which is an apparatus width direction, the term “direction that intersects the second direction” includes directions that extend diagonally along the apparatus width direction inclined in an apparatus depth direction, which is the second direction, and directions that extend diagonally in an apparatus height direction. 
     According to the application example, the carriage is supported by the first guide member and the second guide member, which are disposed at an interval in the second direction, the tube that supplies the liquid, which is delivered from the liquid accommodation section, to the carriage, extends in a direction that intersects the second direction by extending out from the carriage, extends in an opposite direction by turning back in a vertical direction, and extends in the direction that intersects the second direction between the first sliding section and the second sliding section in the second direction. In this instance, a restoring force that attempts to make the curve gentle, in other words, attempts to restore the tube to a state of being extended in a straight manner, occurs in the tube. Further, the restoring force acts on the carriage, which the tube is connected to, and, for example, attempts to separate the first sliding section and the second sliding section from the first guide member or the second guide member by lifting the carriage up. 
     In addition, the restoring force brings about a moment force that attempts to rotate the carriage with the first sliding section as a pivot point. The moment force becomes proportionately larger with distance from the first sliding section to the tube. 
     In the application example, since the tube extends in a direction that intersects the second direction between the first sliding section and the second sliding section in the second direction, a distance between the tube and the first sliding section in the second direction is shorter than a distance between the first sliding section and the second sliding section. In other words, it is possible to make distance between the tube and the first sliding section shorter than in a case in which the tube is disposed on an outer side of the second sliding section with respect to the first sliding section. As a result of this, the moment force in a case in which the tube is positioned between the first sliding section and the second sliding section can be smaller than the moment force in a case in which the tube is disposed on an outer side of the second sliding section with respect to the first sliding section. 
     As a result of this, it is possible to suppress the separation of the carriage from the first guide member or the second guide member. Therefore, since it is possible to stabilize the posture of the recording head, and furthermore, the carriage with respect to the target recording medium, it is possible to suppress deteriorations in the recording quality on the target recording medium. 
     In addition, according to the application example, the second sliding section is provided in the arm section which extends by protruding out from the carriage in the second direction, and the tube extends in a direction that intersects the second direction passing at least one of above and below the arm section. Accordingly, in the application example, it is possible to make the distance between the first sliding section and the second sliding section in the second direction longer. As a result of this, it is possible to increase a moment force due to the dead weight of the carriage, which acts on the second sliding section, and of which the first sliding section is a pivot point. As a result of this, it is possible to suppress the separation of the carriage from the first guide member or the second guide member, and therefore, it is possible to suppress deteriorations in recording quality as a result. In addition, since inclination of the carriage with the first direction as a rotational axis thereof is reduced if the distance of the arm section is increased, it is possible to maintain the recording quality on the target recording medium in the recording head. 
     Application Example 2 
     In the recording apparatus, it is preferable that the first sliding section retains the carriage in the second direction by the first guide member being inserted between the carriage and the first sliding section in the second direction, the second sliding section is supported from below by the second guide member, and the tube is disposed in a position at which a distance from the first sliding section in the second direction is longer than a distance from the second sliding section. 
     According to the application example, since the first sliding section retains the carriage in the second direction by the first guide member being inserted between the carriage and the first sliding section in the second direction, it is possible to regulate displacement of the carriage in the second direction when the carriage moves in the first direction as a result of being guided by the first guide member, and therefore, it is possible to suppress deteriorations in the recording quality as a result. 
     Application Example 3 
     In the recording apparatus, it is preferable that the tube is connected to the carriage above the arm section as a result of curving and turning back passing below the arm section. 
     According to the application example, since the tube is connected to the carriage above the arm section as a result of curving and turning back passing below the arm section, it is possible to increase a curvature radius of the tube. As a result of this, it is possible to reduce the restoring force that attempts to make the curve, which occurs in the tube, gentle. As a result of this, it is possible to more reliably suppress a circumstance in which the restoring force resists the dead weight of the carriage and attempts to separate the carriage from the first guide member or the second guide member. Therefore, it is possible to suppress deteriorations in the recording quality on the target recording medium as a result. 
     Application Example 4 
     In the recording apparatus, it is preferable that the first sliding section is provided in a lower section of the carriage. 
     Application Example 5 
     In the recording apparatus, it is preferable that a distance between the tube and the first sliding section in the second direction is shorter than the distance between the first sliding section and the second sliding section. 
     According to the application example, a distance between the tube and the first sliding section in the second direction is shorter than the distance between the first sliding section and the second sliding section. Accordingly, it is possible to make the moment force that occurs in the carriage smaller than a moment force due to the dead weight of the carriage, which acts on the second sliding section. As a result of this, it is possible to suppress the separation of the carriage from the second guide member. Therefore, it is possible to suppress deteriorations in the recording quality on the target recording medium as a result. 
     Application Example 6 
     It is preferable that the recording apparatus further includes a regulation unit that is provided in the arm section, and regulates separation of the second sliding section from the second guide member. 
     According to the application example, since the regulation unit, which regulates separation of the second sliding section from the second guide member, is provided in the arm section, which extends by protruding out from the carriage in the second direction, the distance between the first sliding section and the regulation unit in the second direction is longer, and therefore, it is even possible to counter the moment force that occurs in the carriage with a small force. Accordingly, the regulation unit can easily suppress the separation of the second sliding section from the second guide member. As a result of this, since the posture of the recording head, and furthermore, the carriage with respect to the target recording medium is stabilized, it is possible to suppress deteriorations in the recording quality on the target recording medium. 
     In addition, according to the application example, since the second sliding section is provided in the arm section, the regulation unit can reliably regulate a circumstance in which the second sliding section becomes separated from the second guide member in the vicinity of the second sliding section. Therefore, since the posture of the recording head, and furthermore, the carriage is stabilized with respect to the target recording medium, it is possible to suppress deteriorations in the recording quality on the target recording medium. 
     Application Example 7 
     In the recording apparatus, it is preferable that the second guide member further includes a support section that supports by coming into contact with the second sliding section, and a facing section that is provided above the support section, and faces the support section, and the regulation unit is provided with a third sliding section that comes into contact with the facing section and is capable of sliding. 
     According to the application example, the third sliding section comes into contact with the facing section in the regulation unit. In other words, the regulation unit regulates displacement of the carriage with respect to a direction in which the second sliding section becomes separated from the second guide member with the first sliding section as a pivot point thereof, by causing the third sliding section to come into contact with the facing section. Accordingly, since the regulation unit can more reliably counter the moment force, and the posture of carriage is stabilized as a result, it is possible to suppress deteriorations in the recording quality on the target recording medium. 
     Application Example 8 
     In the recording apparatus, it is preferable that the regulation unit further includes a biasing member that biases the third sliding section toward the facing section. 
     According to the application example, the regulation unit includes a biasing member that biases the third sliding section toward the facing section. In other words, since the biasing member biases the third sliding section toward the facing section, the third sliding section is subjected to a reaction force, which acts in a direction that is opposite to a direction in which the moment force acts from the facing section. Accordingly, since the reaction force in the carriage acts in a direction in which the moment force decreases, the regulation unit reliably stabilizes the posture of the carriage, and therefore, it is possible to suppress deteriorations in the recording quality on the target recording medium. 
     Application Example 9 
     In the recording apparatus, it is preferable that the regulation unit further includes a magnetic member, and the magnetic member draws the second guide member to a second sliding section side using a magnetic force. 
     According to the application example, since the regulation unit is a magnetic member that draws the second guide member to a second sliding section side, the second guide member is attracted to the second sliding section side by the magnetic force of the magnetic member. As a result of this, since the magnetic force of the magnetic member counters the moment force, displacement in the second sliding section in a direction that becomes separated from the second guide member is suppressed, and therefore, it is possible to suppress deteriorations in the recording quality on the target recording medium since the posture of the carriage is stabilized. 
     Application Example 10 
     In the recording apparatus, it is preferable that a plurality of the tubes are provided, in the tubes, turnback portions, which curve, follow the movement of the carriage in the first direction, a tube diameter conversion member is provided in a position that is shifted from a movement region of the turnback portions in the first direction, and a tube diameter from the liquid accommodation section to the tube diameter conversion member is greater than a tube diameter from the tube diameter conversion member to the carriage through the turnback portions. 
     According to the application example, a tube diameter from the liquid accommodation section to the tube diameter conversion member is greater than a tube diameter from the tube diameter conversion member to the carriage through the turnback portions. In other words, the diameter of the tube from the liquid accommodation section to the tube diameter conversion member is wide, and the diameter of the tube from the tube diameter conversion member to the carriage is narrow. Therefore, in comparison with a case in which the tube diameter is narrow throughout the entire pathway from the liquid accommodation section to the carriage, it is possible to reduce pressure loss by making the tube diameter in the pathway from the liquid accommodation section to the tube diameter conversion member wide, and therefore, it is possible to suppress nozzle slip-out in the recording head. 
     In addition, in the application example, since the diameter of the tube from the tube diameter conversion member to the carriage is narrow, that is, the tube diameter of a portion that corresponds to operation of the carriage is narrow, it is possible to reduce a reaction force of the tube that is transmitted to the carriage, and therefore, it is possible to maintain the recording quality on the target recording medium in the recording head. 
     Application Example 11 
     In the recording apparatus, it is preferable that a plurality of the tubes are arranged along the second direction, and a diameter of a tube that is closest to the first sliding section in the second direction is greater than those of the other tubes. 
     According to the application example, among a plurality of tubes that are arranged in the second direction, a tube that is arranged closest to the first sliding section is wider than the other tubes. In this instance, the restoring force that attempts to make the curve, which occurs in the tube, gentle becomes larger as the diameter of the tube becomes wider. Accordingly, in the application example, a tube with the largest restoring force is disposed close to the first sliding section, but since it is possible to make a distance between the tube with the largest restoring force and the first sliding section smaller, it is possible to reduce the moment force that attempts to rotate the carriage with the first sliding section as the pivot point thereof. Accordingly, it is possible to suppress a circumstance in which the carriage attempts to become separated from the second guide member. As a result of this, it is possible to suppress deteriorations in the recording quality on the target recording medium. 
     Application Example 12 
     In the recording apparatus, it is preferable that the liquid is ink, and the tube with the widest diameter supplies black ink to the recording head. 
     According to the application example, the tube with the widest diameter supplies black ink to the recording head. In this instance, in the recording apparatus, ink of a plurality colors, for example, black, cyan, magenta, yellow, and the like, is used, but the usage amount of black ink is the highest. In the application example, it is possible to supply the black ink to the recording head from the liquid accommodation section in the tube with the widest diameter among the plurality of tubes. In other words, since it is possible to increase the supply amount of black ink to the recording head, for which the usage amount is highest, it is possible to stabilize the supply of black ink to the recording head. 
     Application Example 13 
     In the recording apparatus, it is preferable that a plurality of the liquid accommodation sections are provided along the second direction, among the plurality of liquid accommodation sections that are provided, at least a part of a liquid accommodation section that is positioned closest to the second sliding section in the second direction, and at least a part of the tube with the widest tube diameter are in the same position in the second direction, and the liquid accommodation section that is positioned closest to the second sliding section is connected to the tube with the widest tube diameter. 
     According to the application example, among the plurality of liquid accommodation sections that are provided, at least a part of a liquid accommodation section that is positioned closest to the second sliding section along the second direction, and at least a part of the tube with the widest tube diameter are in the same position in the second direction, and the liquid accommodation section that is positioned closest to the second sliding section is connected to the tube with the widest tube diameter. In other words, it can be said that the distance in the second direction between the liquid accommodation section that is positioned closest to the second sliding section and the tube with the widest tube diameter is shorter than the distance between the other liquid accommodation sections and the other tubes. Accordingly, a pathway length from the liquid accommodation section that is positioned closest to the second sliding section to the carriage in the tube with the widest tube diameter can be made shorter than a pathway length from other liquid accommodation sections to the carriage in the other tubes. 
     Application Example 14 
     It is preferable that the recording apparatus further includes a tube guide member that extends along the first direction, and guides the tube, and in the recording apparatus, the tube guide member is arranged below the arm section. 
     Application Example 15 
     It is preferable that the recording apparatus further includes a retaining member that extends along the first direction, and retains an ejection roller, which ejects the target recording medium, and in the recording apparatus, the tube guide member and the retaining member are separated. 
     According to the application example, since the tube guide member and the retaining member are separated, the retaining member is not subjected to the restoring force, which attempts to make the curve that occurs in the tube gentle, via the tube guide member, and therefore, it is possible to suppress a circumstance in which the retaining member becomes warped as a result of being subjected to the restoring force. As a result of this, since it is possible to suppress a circumstance in which the retaining member becomes warped, it is possible to suppress deteriorations in an ejection property of the target recording medium since it is difficult for positional shift of the ejection roller due to warping of the retaining member to occur. 
     Application Example 16 
     In the recording apparatus, it is preferable that the arm section extends in a lower section of the carriage protruding in the second direction from a center of the carriage in the first direction, and a tip end thereof extends downward. 
     According to the application example, since the second sliding section is provided in the arm section, which extends from the carriage in the second direction, it is possible to make the distance between the first sliding section and the second sliding section in the second direction longer without increasing the size of the carriage. As a result of this, an increase in the size of the carriage is suppressed, and therefore, it is possible to reduce the size of the carriage and it is possible to achieve a reduction in cost. 
    
    
     
       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 printer. 
         FIG. 2  is a perspective view that shows an internal structure of the printer. 
         FIG. 3  is a partial cross-sectional view that shows the internal structure of the printer. 
         FIG. 4  is a perspective view of a carriage. 
         FIG. 5  is a perspective view that shows a pathway of an ink tube from an ink tank to a tube diameter conversion member. 
         FIG. 6  is a perspective view that shows the tube diameter conversion member. 
         FIG. 7  is a side view of the carriage. 
         FIG. 8  is a bottom view of the carriage. 
         FIG. 9A  is a bottom view that shows a first sliding section. 
         FIG. 9B  is a perspective view that shows a first guide member and the first sliding section. 
         FIG. 10  is a cross-sectional view that shows a relationship between a tube guide member and a retaining member. 
         FIG. 11  is a lateral cross-sectional view that shows a relationship between an ink tube protection member and ribs, which are provided in a bottom section of an image reading device. 
         FIG. 12  is a lateral cross-sectional view that shows a relationship between the ink tube protection member and ribs according to a modification example of a first example, which are provided in the bottom section of the image reading device. 
         FIG. 13  is a cross-sectional view that shows a relationship between an arm section and a tube guide member according to the modification example of the first example. 
         FIG. 14  is a schematic view that shows a relationship between a force and a moment in the carriage. 
         FIG. 15  is a partial cross-sectional view that shows an internal structure of a printer according to a second example. 
         FIG. 16  is a perspective view of a carriage according to the second example. 
         FIG. 17  is a perspective view that shows a pathway of an ink tube from an ink tank to a tube diameter conversion member according to the second example. 
         FIG. 18  is a side view of the carriage according to the second example. 
         FIG. 19A  is a partial cross-sectional view of regulation unit according to the second example. 
         FIG. 19B  is a partial perspective view of the regulation unit according to the second example. 
         FIG. 20  is a cross-sectional view that shows a relationship between a tube guide member and a retaining member according to the second example. 
         FIG. 21  is a perspective view of a carriage according to a third example. 
         FIG. 22  is a side view of the carriage according to the third example. 
         FIG. 23  is a schematic view that shows a relationship between a force and a moment in the carriage according to the second example. 
         FIG. 24  is a schematic view that shows a relationship between a force and a moment in the carriage according to the third example. 
     
    
    
     DESCRIPTION OF EXEMPLARY EMBODIMENTS 
     Hereinafter, embodiments of the invention will be described on the basis of the drawings. Additionally, in each example, like reference numerals will be given to like configurations, description will only be given in the initial example, and description thereof will be omitted in subsequent examples. 
     First Example 
       FIG. 1  is an external perspective view of a printer  10  according to a first example,  FIG. 2  is a perspective view that shows an internal structure of the printer  10  according to the first example,  FIG. 3  is a partial cross-sectional view that shows the internal structure of the printer  10  according to the first example,  FIG. 4  is a perspective view of a carriage according to the first example,  FIG. 5  is a perspective view that shows a pathway of an ink tube from an ink tank to a tube diameter conversion member,  FIG. 6  is a perspective view that shows the tube diameter conversion member, and  FIG. 7  is a side view of the carriage according to the first example. 
       FIG. 8  is a bottom view of the carriage according to the first example,  FIG. 9A  is a bottom view that shows a first sliding section,  FIG. 9B  is a perspective view that shows a main guide rail and the first sliding section,  FIG. 10  is a cross-sectional view that shows a relationship between a tube guide member and a retaining member,  FIG. 11  is a lateral cross-sectional view that shows a relationship between an ink tube protection member and ribs, which are provided in a bottom section of an image reading device according to the first example,  FIG. 12  is a lateral cross-sectional view that shows a relationship between the ink tube protection member and ribs according to a modification example of the first example, which are provided in the bottom section of the image reading device,  FIG. 13  is a cross-sectional view that shows a relationship between an arm section and a tube guide member according to the modification example of the first example, and  FIG. 14  is a schematic view that shows a relationship between a force and a moment in the carriage according to the first example. 
     In addition, in an X-Y-Z coordinate system that is shown in each drawing, an X direction (an apparatus width direction) as a “first direction” shows a scanning direction of a recording head, a Y direction as a “second direction” shows a depth direction of the recording apparatus, and a Z direction shows a “direction of change in a distance (a gap) between the recording head and sheets of paper, that is, an apparatus height direction. Additionally, in each drawing, a −Y direction is set as an apparatus anterior surface side and a +Y direction side is set as an apparatus back surface side. 
     Outline of Printer 
     An ink jet printer  10  (hereinafter, referred to as a “printer”) will be described as an example of a recording apparatus with reference to  FIGS. 1 and 2 . The printer  10  is configured as a multifunction machine that is provided with an apparatus main body  12 , and an image reading device  14 . The apparatus main body  12  is provided with a target recording medium accommodation cassette  16 , which accommodates a target recording medium, and an ink tank  18  as a “liquid accommodation section”, which accommodates ink as a “liquid”. 
     The image reading device  14  is attached to an upper section of the apparatus main body  12  through a hinge  20  (refer to  FIG. 2 ), which is provided in an upper section of the apparatus main body  12 . The image reading device  14  is configured to be capable of revolving with respect to the apparatus main body  12  with the hinge  20  as the pivot point thereof. Additionally, in the present example, the hinge  20  is provided on a back surface side of the apparatus main body  12 , and the image reading device  14  revolves from a front surface side of the apparatus main body  12  toward the back surface side. In addition, as one example, the image reading device  14  in the present example is configured as a scanner unit as an example. 
     The target recording medium accommodation cassette  16  is configured so as to be capable of accommodating a plurality of sheets of the target recording medium, and is removably attached from an anterior surface side (a −Y axis direction side in  FIG. 1 ) of the apparatus main body  12 . Additionally, in the present specification, the term target recording medium indicates sheets of paper such as normal paper, heavy paper or photographic paper as an example. 
     In addition, a plurality of the ink tanks  18  are provided on a right surface side (a −X axis direction side in  FIG. 1 ) of the apparatus main body  12  as large capacity ink tanks that accommodate the ink (refer to  FIG. 5 ). In addition, the plurality of ink tanks  18   a ,  18   b ,  18   c  and  18   d  are provided to correspond to each color of black, cyan, magenta and yellow as an example. 
     Next, the configuration of the apparatus main body  12  will be described with reference to  FIGS. 2 and 3 . A carriage  22 , which is capable freely moving in the apparatus width direction (an X axis direction in  FIG. 2 ), is provided inside the apparatus main body  12 . The carriage  22  is driven in the apparatus width direction by a carriage driving mechanism  26 , which is driven by a driving motor  24  (refer to  FIG. 2 ). 
     In the present example, the carriage driving mechanism  26  is provided with a driving pulley that is attached to the driving motor  24  (not illustrated in the drawings), a driven pulley  28  that is provided at an interval from the driving pulley in the apparatus width direction, and a toothed belt  30  that is hung around the driving pulley and the driven pulley. A part of the toothed belt  30  is gripped by the carriage  22 . 
     Accordingly, when the driving pulley is driven to rotate by the driving motor  24 , the toothed belt  30  is driven, and the carriage  22 , which grips a part of the toothed belt  30 , is moved in the apparatus width direction. 
     In addition, a recording head  32  is provided in a bottom section of the carriage  22  (refer to  FIGS. 7 and 8 ). Furthermore, a medium support member  34 , which extends in the apparatus width direction, is provided below the carriage  22 . At least a part of the medium support member  34  is provided inside a movement region of the carriage  22  in the apparatus width direction, and the medium support member  34  faces the recording head  32  when the carriage  22  moves in the movement region of the carriage  22 . 
     Additionally, the medium support member  34  supports a target recording medium that is transported from the target recording medium accommodation cassette  16 . Further, the recording head  32  faces sheets of paper that are supported by the medium support member  34 . In addition, the medium support member  34  stipulates a distance (a gap) between a recording surface of the target recording medium and a head surface of the recording head  32  by supporting the target recording medium from below. In addition, a plurality of nozzle holes (not illustrated in the drawings) are provided on a surface of the recording head  32  that faces the target recording medium, and recording on the target recording medium is executed by discharging the ink from the corresponding nozzle holes toward the recording surface of the target recording medium. 
     In addition, a pair of transport rollers  36  is provided on the apparatus back surface side (an upstream side in a transport pathway) of the carriage  22  in the apparatus depth direction. The pair of transport rollers  36  is provided with a transport driving roller  36   a  and a transport driven roller  36   b  (refer to  FIG. 2 ). 
     In addition, a pair of ejection rollers  38  is provided on the apparatus front surface side (a downstream side in the transport pathway) of the carriage  22  in the apparatus depth direction. The pair of ejection rollers  38  is provided with an ejection driving roller  38   a  and an ejection driven roller  38   b  (refer to  FIGS. 3 and 10 ). In the present example, the ejection driven roller  38   b  is configured as a spur, and is retained in a rotatable manner by a retaining member  40  that is attached to the apparatus main body  12 . 
     In addition, an ejection stacker  42  is provided on the apparatus front surface side (the downstream side in the transport pathway) in the apparatus depth direction with respect to the pair of ejection rollers  38 . It is possible to stack target recording media that is ejected by the pair of ejection rollers  38  on the ejection stacker  42 . 
     In this instance, if the transport pathway of the target recording medium is described, a target recording medium that is accommodated in the target recording medium accommodation cassette  16  is transported from the target recording medium accommodation cassette  16  toward the pair of transport rollers  36 , which are positioned on the downstream side in the transport pathway, by feeding means, which are not illustrated in the drawings. Further, the target recording medium is nipped by the transport driving roller  36   a  and the transport driven roller  36   b , and transported toward the medium support member  34 , which is positioned on the downstream side in the transport pathway. Subsequently, recording is executed on the target recording medium that is transported onto the medium support member  34  by the recording head  32 . Further, the target recording medium on which recording has been executed is nipped by the ejection driving roller  38   a  and the ejection driven roller  38   b , and ejected toward the ejection stacker  42 . 
     Outline of Carriage 
     Next, an outline of the carriage  22  will be described with reference to  FIGS. 2 to 10 . As can be seen with reference to  FIGS. 4, 5 and 7 , the carriage  22  is provided with a box-shaped housing  44 , an arm section  46  that protrudes from the housing  44  on the apparatus front surface side in the apparatus depth direction, and the recording head  32  that is provided in the bottom section of the housing  44  (refer to  FIG. 8 ). 
     In addition, the carriage  22  is configured to be capable of reciprocating motion in the apparatus width direction inside the apparatus main body  12 . More specifically, as shown in  FIG. 4 , a first guide member  48  that extends in the apparatus width direction, and a second guide member  50  that is disposed on the apparatus front surface side at a distance from the first guide member  48  in the apparatus depth direction, and extends in the apparatus width direction, are attached to the apparatus main body  12 . In the present example, the first guide member  48  and the second guide member  50  are configured as guide rails. 
     In the present example, as shown in  FIG. 9B , the first guide member  48  is provided with a flat section  48   a  and an inverted section  48   b  that extends from the flat section  48   a  in the apparatus height direction, and the flat section  48   a  and the inverted section  48   b  respectively extend in the apparatus width direction. 
     Gap adjustment means  52  (refer to  FIG. 9B ) are provided in the housing  44  on the apparatus back surface side, which is “one side” in the apparatus depth direction. Although not illustrated in the drawings, the gap adjustment means  52  is configured so as to be capable of adjusting a position of the carriage  22  in the apparatus height direction. In addition, a first sliding section  54  is provided in the gap adjustment means  52 . 
     A flat sliding site  54   a  that slides in contact with the flat section  48   a  of the first guide member  48 , and an inverted sliding site  54   b  that slides in contact with the inverted section  48   b , are provided in the first sliding section  54  (refer to  FIGS. 8 and 9A ). The flat sliding site  54   a  is supported in the apparatus height direction by the flat section  48   a  of the first guide member  48 . 
     In addition, a housing sliding section  44   a  is provided on an apparatus back surface side of the housing  44  in a position that faces the inverted sliding site  54   b  of the first sliding section  54  with the inverted section  48   b  of the first guide member  48  interposed therebetween. That is, the inverted section  48   b  of the first guide member  48  is in a state of being inserted between the inverted sliding site  54   b  of the first sliding section  54  and the housing sliding section  44   a.    
     Accordingly, when the carriage  22  moves in the apparatus width direction, in addition to the carriage  22  being guided by the inverted section  48   b  of the first guide member  48 , it is possible to regulate displacement of the carriage  22  in the apparatus depth direction. Accordingly, it is possible to suppress deteriorations in the recording quality on the target recording medium in the printer  10 . 
     In addition, as shown in  FIG. 5 , the arm section  46  protrudes from the housing  44  on the apparatus front surface side, and extends downward at a tip end of a portion that protrudes, that is, toward the second guide member  50 . Further, a second sliding section  56  is provided in the arm section  46  in a portion that comes into contact with the second guide member  50 . In other words, the carriage  22  is supported by the second guide member  50  through the second sliding section  56 . 
     Accordingly, the carriage  22  is supported by the first guide member  48  through the first sliding section  54  in the apparatus height direction, and is supported by the second guide member  50  in  FIG. 7  through the second sliding section  56 . 
     In addition, the second sliding section  56  is provided in the arm section  46 . Therefore, a distance L2 (refer to  FIG. 14 ) from the first sliding section  54  to the second sliding section  56  in the apparatus depth direction is longer than a distance from the first sliding section  54  to the second sliding section  56  in a case in which the second sliding section  56  is provided on the apparatus front surface side in the housing  44 . As a result of this, in a case in which the height of the back surface side of the carriage  22  in the apparatus height direction is displaced by the gap adjustment means  52 , an inclination angle of the recording head  32  with respect to the target recording medium that is supported on the medium support member  34 , is small. Accordingly, it is possible to suppress deteriorations in the recording quality on the target recording medium. 
     Supply Pathway of Ink 
     Next, a supply pathway of ink will be described with reference to  FIGS. 4 to 7 . A plurality of connection adapters  58  are attached to the inside of the housing  44  of the carriage  22 . Additionally,  FIG. 5  shows the carriage  22  in a state in which the connection adapters  58  have been detached. 
     In the present example, connection adapters  58   a ,  58   b ,  58   c  and  58   d , which correspond to each color of black, cyan, magenta, and yellow, are attached to the housing  44 . The connection adapters  58   a ,  58   b ,  58   c  and  58   d  supply the ink of each color that is respectively supplied from the ink tanks  18   a ,  18   b ,  18   c  and  18   d , to the recording head  32 . 
     In addition, the ink tanks  18   a ,  18   b ,  18   c  and  18   d  are aligned along the apparatus depth direction. In the present example, the ink tank  18   a , which accommodates black ink, is positioned furthest on the apparatus front surface side, and the ink tank  18   b , which accommodates cyan, the ink tank  18   c , which accommodates magenta, and the ink tank  18   d , which accommodates yellow, are aligned in order toward the apparatus back surface side. 
     In addition, ink tubes  60   a ,  60   b ,  60   c  and  60   d  extend out from each ink tank  18   a ,  18   b ,  18   c  and  18   d  in the apparatus depth direction toward the apparatus front surface side. Each ink tube  60   a ,  60   b ,  60   c  and  60   d  extends changing from the apparatus depth direction in a region in which the ink tank  18   a  is provided in the apparatus depth direction toward a side that is opposite to a side on which the ink tanks  18  are provided in the apparatus width direction. 
     In addition, as can be seen with reference to  FIGS. 3 to 5 , a tube guide member  62  that extends in the apparatus width direction is provided in the apparatus main body  12  above the second guide member  50 . A tube diameter conversion member  64  is attached to the tube guide member  62 . The ink tubes  60   a ,  60   b ,  60   c  and  60   d , the orientation of which changes to the apparatus width direction by extending out in the apparatus depth direction from each ink tank  18   a ,  18   b ,  18   c  and  18   d , are connected to the tube diameter conversion member  64 . 
     As shown in  FIG. 6 , the tube diameter conversion member  64  is provided with a plurality of connectors  64   a ,  64   b ,  64   c ,  64   d ,  64   e ,  64   f ,  64   g  and  64   h . A plurality of connectors  64   a ,  64   b ,  64   c  and  64   d  are disposed on one of (the −X axis direction side in  FIG. 6 ) the two sides of the tube diameter conversion member  64  aligned in the apparatus depth direction (the Y axis direction in  FIG. 6 ). In addition, a plurality of connectors  64   e ,  64   f ,  64   g  and  64   h  are disposed on the other of (the +X axis direction side in  FIG. 6 ) the two sides of the tube diameter conversion member  64  aligned in the apparatus depth direction (the Y axis direction in  FIG. 6 ). 
     In addition, in the present example, the ink tubes  60   a ,  60   b ,  60   c  and  60   d  are respectively connected to the connectors  64   a ,  64   b ,  64   c  and  64   d . Furthermore, the connectors  64   e ,  64   f ,  64   g  and  64   h  are provided in positions that respectively correspond to the connectors  64   a ,  64   b ,  64   c  and  64   d  in the apparatus depth direction. 
     In addition, ink tubes  66   a ,  66   b ,  66   c  and  66   d  are respectively connected to the connectors  64   e ,  64   f ,  64   g  and  64   h . And the ink tubes  66   a ,  66   b ,  66   c  and  66   d  extend in the apparatus width direction from the tube diameter conversion member  64  to the other of (the +X axis direction side in  FIG. 6 ) the two sides. In addition, the diameters of the ink tubes  66   b ,  66   c  and  66   d  are set to be more narrow that the diameters of the ink tubes  60   b ,  60   c  and  60   d.    
     In this instance, the diameters of the connectors  64   b ,  64   c  and  64   d  are set to be larger than the diameters of the connectors  64   f ,  64   g  and  64   h . In other words, the diameters of the ink tubes  60   b ,  60   c  and  60   d , which are connected to the connectors  64   b ,  64   c  and  64   d , are set to be larger than the diameters of the ink tubes  66   b ,  66   c  and  66   d , which are connected to the connectors  64   f ,  64   g  and  64   h . Accordingly, the diameter dimensions of the ink tubes that are connected on one side and the other side of the tube diameter conversion member  64 , are converted. 
     Additionally, in the present example, the diameter of the ink tube  66   a , which is connected to the connector  64   e , is set to the same dimension as the diameter of the ink tube  60   a , which is connected to the connector  64   a . In other words, in the present example, the ink is supplied by the ink tubes  60   a  and  66   a , which are the same diameter from the ink tank  18   a  to the connection adapter  58   a , without performing conversion of the tube diameter between the connector  64   a  and the connector  64   e.    
     In addition, as shown in  FIGS. 4 and 7 , the tube guide member  62  is provided between the first sliding section  54  and the second sliding section  56  in the apparatus depth direction, or more specifically, between an end section on the apparatus front surface side of the housing  44  of the carriage  22  and the second sliding section  56 . In other words, the ink tubes  60 , which extend out from the ink tanks  18 , and the ink tubes  66 , extend in the apparatus width direction passing below the arm section  46  between the first sliding section  54  and the second sliding section  56  in the apparatus depth direction. 
     Additionally, in the present example, a positional relationship of the first sliding section  54 , the second sliding section  56  and the ink tubes  66  in the apparatus depth direction is set so that a distance L1 (refer to FIG.  14 ) between the first sliding section  54  and the ink tubes  66  in the apparatus depth direction is longer than a distance between the ink tubes  66  and the second sliding section  56 . 
     In addition, the ink tubes  66   a ,  66   b ,  66   c  and  66   d , which extend out from the tube diameter conversion member  64 , extend in the apparatus width direction to a side that is opposite to a side on which the ink tanks  18  are provided, guided by the tube guide member  62 , extend to the ink tank  18  side by curving and turning back, and are respectively connected to the connection adapters  58   a ,  58   b ,  58   c  and  58   d , which are attached to the housing  44  of the carriage  22 . In other words, the ink tubes  66  curve passing below the arm section  46 , and are connected to the connection adapters  58  passing above the arm section by turning back in a vertical direction. 
     Accordingly, the ink, which is accommodated in the ink tanks  18 , is supplied to the recording head  32  through the ink tubes  60 , the tube diameter conversion member  64 , the ink tubes  66  and the connection adapters  58 . 
     Moment Force Acting on Carriage 
     In this instance, a force and a moment that act on the carriage  22  will be described with reference to  FIG. 14 . Additionally,  FIG. 14  is a schematic view that shows a relationship between a force and a moment that act on the carriage  22 . Additionally, in  FIG. 14 , only a single ink tube  66  is illustrated for purposes of description. 
     As shown in  FIG. 14 , the inverted section  48   b  of the first guide member  48  on the back surface side of the carriage  22  in the apparatus depth direction, is in a state of being inserted between the inverted sliding site  54   b  of the first sliding section  54  and the housing  44  of the carriage  22 . Further, on a front surface side of the carriage  22  in the apparatus depth direction, since the second sliding section  56  is only supported from below by the second guide member  50 , it is easy for the carriage  22  to rotate in a clockwise direction in  FIG. 14  with the first sliding section  54  as a pivot point thereof. 
     In addition, a restoring force F1 that attempts to make a curve gentle, or on other words, attempts to restore the ink tube  66  to a state of being extended in a straight manner, occurs in the ink tube  66 . Further, the restoring force F1 acts on the carriage  22 , which the ink tube  66  is connected to, and, for example, attempts to separate the first sliding section  54  and the second sliding section  56  from the first guide member  48  or the second guide member  50  by lifting the carriage  22  up. 
     Since the restoring force F1 acts on the apparatus anterior surface side of the housing  44  of the carriage  22 , a rotational moment force N1, which attempts to rotate the carriage  22  in the clockwise direction in  FIG. 14  with the first sliding section  54  as the pivot point thereof, occurs in the carriage  22 . In this instance, the rotational moment force N1 is the product of the length of a segment S1, which links the first sliding section  54  and the ink tube  66  with a straight line, and a component of the restoring force F1 that is orthogonal to the segment S1. 
     However, since the description thereof is complicated, in the present example, the product of the distance L1 from the first sliding section  54  to the ink tube  66  and the restoring force F1 is set as the rotational moment force N1. In the same manner, a rotational moment force N2 in the second sliding section  56 , which will be described later, is also set as a moment force that is determined using the distance L2 in the apparatus depth direction instead of a distance of a segment S2 that links the first sliding section  54  and the second sliding section  56 . Additionally, since it is possible to reduce the effect of the position of a center of gravity by taking a load (the restoring force F1 and a dead weight F2) into consideration, consideration of the position of the center of gravity is omitted. 
     Accordingly, the rotational moment force N1 has a relationship N1=F1×L1. As a result of this, the rotational moment force N1 becomes proportionately larger with the distance L1 from the first sliding section  54  to the ink tube  66 . 
     Meanwhile, among the dead weight of the carriage  22 , the dead weight F2 of a fraction that acts on the arm section  46 , acts on the second sliding section  56  that is provided in the arm section  46 . More specifically, the dead weight F2 of the carriage  22  acts downward in the apparatus height direction, or in other words, toward the second guide member  50 . That is, the second sliding section  56  applies a pressing force to the second guide member  50  using the dead weight F2 of the carriage  22 . In this instance, since the dead weight F2 acts on a side of the second sliding section  56  that is opposite to a side on which the restoring force F1 acts, the rotational moment force N2 acts on the second sliding section  56  toward a direction that is opposite to that of the rotational moment force N1. 
     In this instance, the rotational moment force N2 is represented by the product of the dead weight F2 of the carriage  22  and the distance L2 from the first sliding section  54  to the second sliding section  56 . In other words, the rotational moment force N2 has a relationship of N2=F2×L2. 
     Additionally, in the present example, since the ink tube  66  extends in the apparatus width direction between the first sliding section  54  and the second sliding section  56  in the apparatus depth direction, the distance L1 from the first sliding section  54  to the ink tube  66  in the apparatus depth direction is shorter than the distance L2 from the first sliding section  54  to the second sliding section  56 . In other words, the distance L2 from the first sliding section  54  to the second sliding section  56  is in a relationship of L2&gt;L1 with respect to the distance L1 from the first sliding section  54  to the ink tube  66 . 
     Accordingly, a relationship of rotational moment force N2&gt;rotational moment force N1 is maintained in the carriage  22  by setting the dead weight F2 of the carriage  22  to a load that is greater than a value in which the rotational moment force N1 is divided by the distance L2. 
     As a result of this, since the rotational moment force N2 is greater than the rotational moment force N1, it is possible to suppress the separation of the second sliding section  56  from the second guide member  50 . 
     In addition, in the present example, since the ink tube  66  extends in the apparatus width direction between the first sliding section  54  and the second sliding section  56  in the apparatus depth direction, it is possible to reduce the distance L1 between the ink tube  66  and the first sliding section  54  beyond that of a case in which the ink tube  66  is disposed on an outer side of the second sliding section  56  with respect to the first sliding section  54 , or In other words, on the apparatus anterior surface side. As a result of this, the rotational moment force N1 in a case in which the ink tube  66  is positioned between the first sliding section  54  and the second sliding section  56  can be reduced beyond that of a case in which the ink tube  66  is disposed on an outer side of the second sliding section  56  with respect to the first sliding section  54 . 
     As a result of this, it is possible to suppress the separation of the carriage  22  from the first guide member  48  or the second guide member  50 . Accordingly, since the posture of the recording head  32 , and furthermore, the carriage  22  is stabilized with respect to the target recording medium, it is possible to suppress deteriorations in the recording quality on the target recording medium. 
     In addition, as shown in  FIGS. 3 and 4 , in the present example, the second sliding section  56  is provided in the arm section  46  protruding from the housing  44  of the carriage  22  on the apparatus front surface side in the apparatus depth direction. As a result of this, it is possible to make the distance L2 between the first sliding section  54  to the second sliding section  56  in the apparatus depth direction longer. Accordingly, it is possible to increase the rotational moment force N2 due to the dead weight of the carriage  22 , which acts on the second sliding section  56 , and of which the first sliding section  54  is a pivot point. As a result of this, it is possible to suppress the separation of the carriage  22  from the first guide member  48  or the second guide member  50 . Accordingly, since the posture of the recording head  32 , and furthermore, the carriage  22  is stabilized with respect to the target recording medium, it is possible to suppress deteriorations in the recording quality on the target recording medium. 
     In addition, since inclination of the carriage  22  with the apparatus width direction as a rotational axis thereof is reduced if the distance of the arm section  46  in the apparatus depth direction is increased, it is possible to maintain the recording quality on the target recording medium in the recording head  32 . 
     In addition, in the present example, since the ink tubes  66  are connected to the connection adapters  58 , which are attached to the carriage  22 , above the arm section  46 , by curving and turning back passing below the arm section  46 , it is possible to make a curvature radius of a turnback portion  68  of the ink tube  66  greater. As a result of this, it is possible to reduce the restoring force F1 that attempts to make the curve, which occurs in the ink tube  66 , gentle. As a result of this, it is possible to more reliably suppress a circumstance in which the restoring force F1 resists the dead weight F2 of the carriage  22  and attempts to separate the carriage  22  from the first guide member  48  or the second guide member  50 . Therefore, it is possible to suppress deteriorations in the recording quality on the target recording medium as a result. 
     In addition, as shown in  FIG. 14 , the distance L1 from the first sliding section  54  to the ink tubes  66  in the apparatus depth direction is shorter than the distance L2 from the first sliding section  54  to the second sliding section  56 . Accordingly, it is possible to reduce the rotational moment force N1, which occurs in the carriage  22 , beyond the rotational moment force N2 due to the dead weight F2 of the carriage  22 , which acts on the second sliding section  56 . As a result of this, it is possible to suppress a circumstance in which the carriage  22  attempts to become separated from the second guide member  50 . Therefore, it is possible to suppress deteriorations in the recording quality on the target recording medium as a result. 
     In addition, as can be seen with reference to  FIGS. 3 and 4 , the turnback portion  68 , which curves in the pathway from the tube diameter conversion member  64  of the ink tube  66  to the connection adapters  58  of the carriage  22 , moves while deforming in the apparatus width direction following movement of the carriage  22  in the apparatus width direction. Additionally, in the present example, the tube diameter conversion member  64  is provided in a position that is shifted from the movement region of the turnback portion  68  in the apparatus width direction. 
     That is, in the present example, the tube diameter of the ink tubes  60  from the ink tanks  18  to the tube diameter conversion member  64  is wider than the tube diameter of the ink tubes  66  from the tube diameter conversion member  64  to the carriage  22  through the turnback portion  68 . In other words, the diameter of the tube from the ink tanks  18  to the tube diameter conversion member  64  is wide, the diameter of the tube from the tube diameter conversion member  64  to the carriage  22  is narrow. Therefore, in comparison with a case in which the tube diameters of the ink tubes  60  and  66  are narrow throughout the entire pathway from the ink tanks  18  to the carriage  22 , it is possible to reduce pressure loss by making the tube diameter of the ink tubes  60  in the pathway from the ink tanks  18  to the tube diameter conversion member  64  wide, and therefore, it is possible to suppress nozzle slip-out in the recording head  32 . 
     In addition, since the diameter of the tube of the ink tubes  66  from the tube diameter conversion member  64  to the carriage  22  is narrow, that is, the tube diameter of a portion that corresponds to operation of the carriage  22  is narrow, it is possible to reduce a reaction force of the ink tubes  66  that is transmitted to the carriage  22 , and therefore, it is possible to maintain the recording quality on the target recording medium in the recording head  32 . 
     In addition, in the present example, the ink tubes  66   a ,  66   b ,  66   c  and  66   d  are disposed aligned above the tube guide member  62  in the apparatus depth direction. In this instance, the ink tube  66   a , which has the widest diameter, is disposed on the back surface side in the apparatus depth direction, that is, close to the first sliding section  54 . In this instance, the ink tube  66   a  is connected to the ink tube  60   a  through the tube diameter conversion member  64 . Further, the ink tube  60   a  is connected to the ink tank  18   a , which accommodates the black ink. Accordingly, in the present example, the black ink is fed using the ink tubes  60   a  and  66   a , which have wide tube diameters, in the pathway from the ink tank  18   a  to the carriage  22 . 
     As shown in  FIG. 7 , in the present example, among the ink tubes  66   a ,  66   b ,  66   c  and  66   d , which are arranged in a plurality in the apparatus depth direction, the ink tube  66   a , which is arranged closest to the first sliding section  54 , is wider than the other ink tubes  66   b ,  66   c  and  66   d . In this instance, the restoring force F1 that attempts to make the curve, which occurs in the turnback portion  68  of the ink tubes  66 , gentle becomes larger as the diameters of the ink tubes  66  become wider. Accordingly, in the present example, the ink tube  66   a , which has the largest restoring force F1, is disposed close to the first sliding section  54 , but since it is possible to make the distance L1 between the ink tube  66   a , which has the largest restoring force F1, and the first sliding section  54  smaller, it is possible to reduce the moment force N1 that attempts to rotate the carriage  22  with the first sliding section  54  as the pivot point thereof. Accordingly, it is possible to suppress a circumstance in which the carriage  22  attempts to become separated from the second guide member  50 . Therefore, it is possible to suppress deteriorations in the recording quality on the target recording medium as a result. 
     In addition, in the present example, the ink tube  66   a , which has the widest diameter, supplies the black ink to the recording head  32 . In this instance, in the printer  10 , ink of a plurality of colors, for example, black, cyan, magenta, yellow, and the like, is used, but the usage amount of black ink is the highest. In the present example, it is possible to supply the black ink from the ink tank  18   a  to the recording head  32  in the ink tube  66   a , which has the widest diameter among the plurality of ink tubes  66   a ,  66   b ,  66   c  and  66   d . In other words, since it is possible to increase the supply amount to the recording head  32  of black ink, for which the usage amount is highest, it is possible to stabilize the supply of black ink to the recording head  32 . 
     In addition, as shown in  FIGS. 5 and 7 , among the ink tanks  18   a ,  18   b ,  18   c  and  18   d , at least a part of the ink tank  18   a , which is positioned closest to the second sliding section  56  along the apparatus depth direction, and at least a part of the ink tube  66   a , which has the widest tube diameter, are in the same position in the apparatus depth direction. Further, the ink tank  18   a , which is disposed closest to the second sliding section  56  is connected to the ink tube  66   a , which has the widest tube diameter, through the ink tube  60   a  and the tube diameter conversion member  64 . 
     In other words, the distance in the apparatus depth direction between the ink tank  18   a , which is positioned closest to the second sliding section  56 , and the ink tube  66   a , which has the widest tube diameter, can be said to be shorter than the distances between the other ink tanks  18   b ,  18   c  and  18   d , and the other ink tubes  66   b ,  66   c  and  66   d . Accordingly, in the ink tubes  60   a ,  60   b ,  60   c  and  60   d , which are connected to the tube diameter conversion member  64  by changing toward the apparatus width direction after extending out in the apparatus depth direction from each ink tank  18   a ,  18   b ,  18   c  and  18   d , it is possible to make the pathway length of the ink tube  60   a  the shortest. 
     As a result of this, it is possible to make the pathway length in the ink tubes  60   a  and  66   a , which have the widest tube diameters, from the ink tank  18   a , which is positioned closest to the second sliding section  56 , to the carriage  22  shorter than the pathway lengths in the other ink tubes  60   b ,  60   c ,  60   d ,  66   b ,  66   c  and  66   d  from the ink tanks  18   b ,  18   c  and  18   d  to the carriage  22 . 
     In addition, as can be seen with reference to  FIGS. 3 and 10 , the tube guide member  62  is provided in a state of being separated from the retaining member  40 , which retains the ejection driven roller  38   b  in a manner in which the ejection driven roller  38   b  is capable of rotating, in the apparatus height direction. 
     In the present example, since the tube guide member  62  and the retaining member  40  are separated, the retaining member  40  is not subjected to the restoring force F1, which attempts to make the curve that occurs in the ink tubes  66  gentle, via the tube guide member  62 , and therefore, it is possible to suppress a circumstance in which the retaining member  40  becomes warped as a result of being subjected to the restoring force F1. As a result of this, since it is possible to suppress a circumstance in which the retaining member  40  becomes warped, it is possible to suppress deteriorations in an ejection property of the target recording medium since it is difficult for positional shift of the ejection driven roller  38   b  due to warping of the retaining member  40  to occur. 
     In addition, in the present example, since the second sliding section  56  is provided in the arm section  46 , which extends in from the carriage  22  in the apparatus depth direction, it is possible to make the distance L2 between the first sliding section  54  to the second sliding section  56  in the apparatus depth direction longer without increasing the size of the carriage  22 . As a result of this, an increase in the size of the carriage  22  is suppressed, and therefore, it is possible to reduce the size of the carriage  22  and it is possible to achieve a reduction in cost. 
     Ink Tube Protection Member 
     In addition, as can be seen with reference to  FIG. 11 , an ink tube protection member  70  is provided on the ink tubes  66  between the ink tubes  66  and the tube guide member  62 , on an outer peripheral side of the curve of the turnback portion  68 , between the ink tubes  66  and a bottom section  14   a  of the image reading device  14 . The ink tube protection member  70  is a film form flexible member, and is attached so as to be positioned on the outer peripheral side of the curve of the turnback portion  68  along the pathway of the ink tubes  66 . In the present example, the ink tube protection member is formed from a PET (polyethylene terephthalate) resin as an example. 
     In addition, a plurality of ribs  72  and  74  are provided on the bottom section  14   a  of the image reading device  14  in positions that correspond to the positions of the ink tubes  66  in the apparatus depth direction. In the present example, the rib  72  is provided in a position that corresponds to the ink tube  66   a , which has the widest tube diameter, in the apparatus depth direction. In addition, the rib  74  is provided between the ink tube  66   b  and the ink tube  66   d  in the apparatus depth direction. 
     In the present example, the width of the rib  72  in the apparatus depth direction is set to be greater than the width of the rib  74 . Further, the ribs  72  and  74  are subjected to the restoring force F1 from the ink tubes  66 , which are subjected to the restoring force F1 through the ink tube protection member  70 . In this instance, since the ink tube  66   a , which has the widest tube diameter, is positioned on a side on which the rib  72  is provided, a restoring force F1a from the ink tubes  66 , which the rib  72  is subjected to, is greater than a restoring force F1b from the ink tubes  66 , which the rib  74  is subjected to. 
     However, in the present example, since the width of the rib  72  is greater than the width of the rib  74 , it is possible to lower a contact pressure of the rib  72  with the ink tube protection member  70 . Additionally, in the present example, a wear resistance of the ink tube protection member  70  is set to be lower than those of the ribs  72  and  74 . As a result of this, it is possible to suppress uneven wear of the ink tube protection member  70 , which occurs as a result of the differences in the restoring forces F1 of the ink tubes  66  in the apparatus depth direction. 
     Modification Examples of First Example 
     (1) In the present example, the wear resistance of the ink tube protection member  70  is set to be smaller than those of the ribs  72  and  74 , but in place of this configuration, the wear resistance of the ink tube protection member  70  may be set to be larger than those of the ribs  72  and  74 . If set in this manner, it is possible to suppress uneven wear of the ribs  72  and  74 . 
     (2) In addition, in the present example, a configuration in which the width of the rib  72  in the apparatus depth direction is greater than the width of the rib  74 , is used, but in place of this configuration, as shown in  FIG. 12 , a protrusion amount of the rib  72  from the bottom section  14   a  of the image reading device  14  in the apparatus height direction may be set to be greater than a protrusion amount of the rib  74  from the bottom section  14   a  of the image reading device  14 . By setting in this manner, since the curvature radius of the ink tube  66   a  on a rib  72  side is greater than those of the other ink tubes  66   b ,  66   c  and  66   d , it is possible to reduce the restoring force F1a, which occurs in the ink tube  66   a , beyond the restoring forces F1b, which occur in the other ink tubes  66   b ,  66   c  and  66   d . As a result of this, it is possible to lower the contact pressure of the rib  72  with the ink tube protection member  70 . Accordingly, it is possible to suppress uneven wear of the ink tube protection member  70 , which occurs as a result of the differences in the restoring forces F1 of the ink tubes  66  in the apparatus depth direction. 
     (3) In the present example, a configuration in which the ink tubes  66  and the tube guide member  62  pass below the arm section  46 , is used, but in place of this configuration, as shown in  FIG. 13 , the ink tubes  66  and the tube guide member  62  may be disposed so as to pass above the arm section  46 . 
     (4) In addition, in the present example, a configuration in which the arm section  46 , which protrudes from the carriage  22  is provided, and the ink tubes  66  pass below the arm section  46 , is used, but in place of this configuration, a configuration in which the second sliding section  56  is provided in a lower section of the housing  44  of the carriage  22  on the apparatus front surface side, and the ink tubes  66  pass between the first sliding section  54  and the second sliding section  56  in the lower section of the housing  44 , may be used. 
     (5) In addition, in the present example, the tube diameter of the ink tubes  60  and  66  is converted by the tube diameter conversion member  64 , but in place of this configuration, the rigidity of the ink tubes  60  and  66  may be changed. 
     (6) In the present example, a configuration in which the flat sliding site  54   a  and the inverted sliding site  54   b  of the first sliding section  54  slide on the first guide member  48 , which includes the flat section  48   a  and the inverted section  48   b , is used, but in place of this configuration, the first guide member  48  may be an axial member. 
     If the abovementioned description is summarized, the printer  10  in the present example is provided with the recording head  32  that performs recording by discharging the ink onto the target recording medium, the carriage  22 , on which the recording head  32  is provided, and which is capable of moving along the apparatus width direction, the first sliding section  54  that is provided in the carriage  22 , on one side in the apparatus depth direction, the second sliding section  56  that is provided in the carriage  22 , in the arm section  46 , which extends from the other two side in the apparatus depth direction, protruding in the apparatus depth direction, the first guide member  48  that supports the carriage  22  by coming into contact with the first sliding section  54 , and guides movement of the carriage  22 , the second guide member  50  that extends in the apparatus width direction, is disposed at an interval from the first guide member  48  in the apparatus depth direction, supports the carriage  22  by coming into contact with the second sliding section  56 , and guides the movement of the carriage  22 , the ink tanks  18  that accommodate the ink, and the ink tubes  60  and  66 , which are ink tubes  60  and  66  that supply the ink, which is delivered from the ink tanks  18 , to the carriage  22 , extend in a direction that intersects the apparatus depth direction by extending out from the carriage  22 , and extend in an opposite direction by turning back in a vertical direction. The ink tubes  60  and  66  extend in the direction that intersects the apparatus depth direction by passing at least one of above and below the arm section  46 . 
     The inverted sliding site  54   b  of the first sliding section  54  retains the carriage  22  in the apparatus depth direction by the inverted section  48   b  of the first guide member  48  being inserted between the housing sliding section  44   a  of the carriage  22  and inverted sliding site  54   b  of the first sliding section  54  in the apparatus depth direction, and the second sliding section  56  is supported from below by the second guide member  50 . The ink tubes  66  are disposed in positions at which the distance L1 from the first sliding section  54  in the apparatus depth direction is longer than a distance from the second sliding section  56 . 
     The ink tubes  66  are connected to the connection adapters  58 , which are attached to the carriage  22 , above the arm section  46 , by curving and turning back passing below the arm section  46 . In addition, the first sliding section  54  is provided below the housing  44  of the carriage  22 . 
     The distance L1 between the ink tubes  66  and the first sliding section  54  in the apparatus depth direction is shorter than the distance L2 between the first sliding section  54  and the second sliding section  56 . 
     The ink tubes  66  are provided in a plurality, and in the ink tubes  66   a ,  66   b ,  66   c  and  66   d , the turnback portions  68 , which curve, follow the movement of the carriage  22  in the apparatus width direction. The tube diameter conversion member  64  is provided in a position that is shifted from the movement region of the turnback portions  68  in the apparatus width direction. The tube diameter of the ink tubes  60  from the ink tanks  18  to the tube diameter conversion member  64  is greater than a tube diameter of the ink tubes  66  from the tube diameter conversion member  64  to the carriage  22  through the turnback portions  68 . 
     The ink tubes  66   a ,  66   b ,  66   c  and  66   d  are arranged in a plurality along the apparatus depth direction, and the diameter of the ink tube  66   a  that is closest to the first sliding section  54  in the apparatus depth direction is wider than the diameters of the other ink tubes  66   b ,  66   c  and  66   d . The liquid is ink, and the ink tube  66   a  with the widest diameter supplies black ink to the recording head  32 . 
     The ink tanks  18   a ,  18   b ,  18   c  and  18   d  are provided in a plurality along the apparatus depth direction. Among the plurality of ink tanks  18   a ,  18   b ,  18   c  and  18   d  that are provided, at least a part of the ink tank  18   a  that is positioned closest to the second sliding section  56  in the apparatus depth direction, and at least a part of the ink tube  66   a  with the widest tube diameter are in the same position in the apparatus depth direction. The ink tank  18   a  that is positioned closest to the second sliding section  56  is connected to the ink tube  66   a  with the widest tube diameter via the ink tube  60   a  and the tube diameter conversion member  64 . 
     The printer  10  includes the tube guide member  62  that extends along the apparatus width direction, and guides the ink tubes  66   a ,  66   b ,  66   c  and  66   d . The tube guide member  62  is arranged below the arm section  46 . 
     The printer  10  includes the retaining member  40  that extends along the apparatus width direction, and retains the ejection driven roller  38   b , which ejects the target recording medium. The tube guide member  62  and the retaining member  40  are separated in the apparatus height direction. 
     The arm section  46  extends in the lower section of the carriage  22  protruding in the apparatus depth direction from a center of the carriage  22  in the apparatus width direction, and a tip end thereof extends downward. 
     Second Example 
     An outline of a printer according to a second example is the same as the outline of the printer  10  that is described in the first example with reference to  FIGS. 1 and 2 . In addition, the supply pathway of the ink in the printer according to the second example is the same as the supply pathway of ink that is described in the first example with reference to  FIGS. 4 to 7 . 
       FIG. 15  is a partial cross-sectional view that shows an internal structure of a printer  10   a  according to the second example,  FIG. 16  is a perspective view of a carriage according to the second example, and  FIG. 17  is a perspective view that shows a pathway of an ink tube from an ink tank to a tube diameter conversion member. 
       FIG. 18  is a side view of the carriage according to the second example,  FIG. 19A  is a partial cross-sectional view of regulation unit according to the second example,  FIG. 19B  is a partial perspective view of the regulation unit according to the second example,  FIG. 20  is a cross-sectional view that shows a relationship between a tube guide member and a retaining member, and  FIG. 23  is a schematic view that shows a relationship between a force and a moment in the carriage according to the second example. 
     Outline of Carriage 
     Next, an outline of a carriage  22  will be described. As can be seen with reference to  FIGS. 16, 17 and 18 , the carriage  22  is provided with a box-shaped housing  44 , an arm section  146  that protrudes from the housing  44  on the apparatus front surface side in the apparatus depth direction, and a recording head  32  that is provided in a bottom section of the housing  44  (refer to  FIG. 18 ). 
     In addition, the carriage  22  is configured to be capable of reciprocating motion in the apparatus width direction inside the apparatus main body  12 . More specifically, as shown in  FIG. 16 , a first guide member  48  that extends in the apparatus width direction, and a second guide member  150  that is disposed on the apparatus front surface side at a distance from the first guide member  48  in the apparatus depth direction, and extends in the apparatus width direction, are attached to the apparatus main body  12 . In the present example, the first guide member  48  and the second guide member  150  are configured as guide rails. 
     As shown in  FIGS. 16, 18 and 19A , the second guide member  150  is provided with a flat support section  150   a  that extends in the apparatus width direction, a facing section  150   b  that is positioned above the support section  150   a  in the apparatus height direction, and faces the support section  150   a , and a connection section  150   c  that extends from the support section  150   a  in the apparatus height direction, and joins the support section  150   a  and the facing section  150   b.    
     Regulation Unit 
     As shown in  FIGS. 17 and 18 , the arm section  146  protrudes from the housing  44  on the apparatus front surface side, and extends downward at a tip end of a portion that protrudes, that is, toward the second guide member  150 . Further, a second sliding section  156 , which comes into contact with the support section  150   a  of second guide member  150 , is provided in the arm section  146 . 
     In other words, the carriage  22  is supported by the second guide member  150  through the second sliding section  156 . Accordingly, the carriage  22  is supported by the first guide member  48  through the first sliding section  54  in the apparatus height direction, and is supported by the second guide member  150  through the second sliding section  156 . 
     In addition, regulation unit  158  area provided in the in an end section  146   a  on a front surface side in apparatus depth direction of the arm section  146 . In the present example, the regulation unit  158  is provided with a slider member  160  as a “third sliding section”, and a spring  162  as a “biasing member”. 
     The slider member  160  is attached to the end section  146   a  in a manner in which the slider member  160  is capable of being displaced along the apparatus height direction at the end section  146   a  of the arm section  146 . In addition, the spring  162  is disposed between the slider member  160  and the end section  146   a  of the arm section  146 . The spring  162  biases the slider member  160  upward in the apparatus height direction. More specifically, the spring  162  biases the slider member  160  toward the facing section  150   b  of the second guide member  150 . Further, the slider member  160  applies a pressing force to the facing section  150   b.    
     In other words, the regulation unit  158  regulates a circumstance in which the second sliding section  156  of the carriage  22  attempts to become separated from the support section  150   a  of the second guide member  150  toward the apparatus height direction. Accordingly, the regulation unit  158  can oppose a moment force that has the first sliding section  54  as the pivot point thereof, which will be described later, and which occurs in the carriage  22  as a result of the spring  162  applying a pressing force to the slider member  160  toward the facing section  150   b . Additionally, a relationship between the moment force and the regulation unit  158  will be described in detail later with the pathway of ink tubes, which will be described later. 
     In addition, the second sliding section  156  is provided in the arm section  146 . Therefore, a distance from the first sliding section  54  to the second sliding section  156  in the apparatus depth direction is longer than a distance from the first sliding section  54  to the second sliding section  156  in a case in which the second sliding section  156  is provided on the apparatus front surface side in the housing  44 . As a result of this, in a case in which the height of the back surface side of the carriage  22  in the apparatus height direction is displaced by the gap adjustment means  52 , an inclination angle of the recording head  32  with respect to the target recording medium that is supported on the medium support member  34 , is small. Accordingly, it is possible to suppress deteriorations in the recording quality on the target recording medium. 
     In addition, as can be seen with reference to  FIGS. 15 to 17 and 18 , a tube guide member  62  that extends in the apparatus width direction is provided in the apparatus main body  12  above the support section  150   a  of the second guide member  150 . The tube guide member  62  is arranged in parallel with the facing section  150   b  of the second guide member  150  in the apparatus depth direction. Further, in the present example, the tube guide member  62  is disposed so as to pass below the arm section  146  between a front surface of the housing  44  and the end section  146   a  of the arm section  146  in the apparatus depth direction. 
     In addition, as shown in  FIGS. 16 and 18 , the tube guide member  62  is provided between the first sliding section  54  and the second sliding section  156  in the apparatus depth direction, or more specifically, between an end section on the apparatus front surface side of the housing  44  of the carriage  22  and the second sliding section  156 . In other words, the ink tubes  60 , which extend out from the ink tanks  18 , and the ink tubes  66 , extend in the apparatus width direction passing below the arm section  146  between the first sliding section  54  and the second sliding section  156  in the apparatus depth direction. 
     Relationship Between Moment Force in Carriage and Regulation Unit 
     In this instance, a force and a moment that act on the carriage  22  will be described with reference to  FIG. 23 . Additionally,  FIG. 23  is a schematic view that shows a relationship between a force and a moment that act on the carriage  22 . Additionally, in  FIG. 23 , only a single ink tube  66  is illustrated for purposes of description. 
     As shown in  FIG. 23 , the inverted section  48   b  of the first guide member  48  on the back surface side of the carriage  22  in the apparatus depth direction, is in a state of being inserted between the inverted sliding site  54   b  of the first sliding section  54  and the housing  44  of the carriage  22 . Further, on a front surface side of the carriage  22  in the apparatus depth direction, since the second sliding section  156  is only supported from below by the second guide member  150 , it is easy for the carriage  22  to rotate in a clockwise direction in  FIG. 24  with the first sliding section  54  as a pivot point thereof. 
     In addition, a restoring force F1 that attempts to make a curve gentle, or on other words, attempts to restore the ink tube  66  to a state of being extended in a straight manner, occurs in the ink tube  66 . Further, the restoring force F1 acts on the carriage  22 , which the ink tube  66  is connected to, and, for example, attempts to separate the first sliding section  54  and the second sliding section  156  from the first guide member  48  and the second guide member  150  by lifting the carriage  22  up. 
     Since the restoring force F1 acts on the apparatus anterior surface side of the housing  44  of the carriage  22 , a rotational moment force N1, which attempts to rotate the carriage  22  in the clockwise direction in  FIG. 23  with the first sliding section  54  as the pivot point thereof, occurs in the carriage  22 . In this instance, the rotational moment force N1 is the product of the length of a segment S1, which links the first sliding section  54  and the ink tube  66  with a straight line, and a component of the restoring force F1 that is orthogonal to the segment S1. 
     However, since the description thereof is complicated, in the present example, the product of the distance L1 from the first sliding section  54  to the ink tube  66  and the restoring force F1 is set as the rotational moment force N1. In the same manner a rotational moment force N2 in the second sliding section  156  and a rotational moment force N3 in the regulation unit  158 , which will be described later, are also set as moment forces that are determined using distances L2 and L3 in the apparatus depth direction instead of a distance of a segment S2 that links the first sliding section  54  and the second sliding section  156 , and a distance of a segment S3 that links the first sliding section  54  and the regulation unit  158 . Additionally, since it is possible to reduce the effect of the position of a center of gravity by taking a load (the restoring force F1, a dead weight F2, and a reaction force F4) into consideration, consideration of the position of the center of gravity is omitted. 
     Accordingly, the rotational moment force N1 has a relationship N1=F1×L1. As a result of this, the rotational moment force N1 becomes proportionately larger with the distance L1 from the first sliding section  54  to the ink tube  66 . 
     Meanwhile, the dead weight F2 of the carriage  22  acts on the second sliding section  156  in a downward manner in the apparatus height direction, or in other words, toward the second guide member  150 . That is, the second sliding section  156  applies a pressing force to the second guide member  150  using the dead weight F2 of the carriage  22 . In this instance, since the dead weight F2 acts on a side of the second sliding section  156  that is opposite to a side on which the restoring force F1 acts, the rotational moment force N2 acts on the second sliding section  156  toward a direction that is opposite to that of the rotational moment force N1. 
     In this instance, the rotational moment force N2 is represented by the product of the dead weight F2 of the carriage  22  and the distance L2 from the first sliding section  54  to the second sliding section  156 . In other words, the rotational moment force N2 has a relationship of N2=F2×L2. 
     In addition, as shown in  FIG. 23 , the slider member  160  is biased against the facing section  150   b  of the second guide member  150  by a biasing force F3 due to the spring  162 . As a result of this, the slider member  160  is subjected to the reaction force F4, which is the same size as the biasing force F3, from the facing section  150   b . In other words, the arm section  146  of the carriage  22  is subjected to the reaction force F4. 
     In this instance, a distance in the apparatus depth direction between the first sliding section  54  and the slider member  160  is set as L3. In addition, since the reaction force F4 acts on a side of the second sliding section  156  that is opposite to a side on which the restoring force F1 acts, the rotational moment force N3 acts on the slider member  160 , and furthermore, the tip end of the arm section  146  toward a direction that is opposite to that of the rotational moment force N1. 
     In this instance, the rotational moment force N3 is represented by the product of the reaction force F4, which the slider member  160  is subjected to, and the distance L3 from the first sliding section  54  to the slider member  160 . In other words, the rotational moment force N3 has a relationship of N3=F4×L3. 
     Additionally, in the present example, since the ink tube  66  extends in the apparatus width direction between the first sliding section  54  and the second sliding section  156  in the apparatus depth direction, the distance L1 from the first sliding section  54  to the ink tube  66  in the apparatus depth direction is shorter than the distance L2 from the first sliding section  54  to the second sliding section  156 . In other words, the distance L2 from the first sliding section  54  to the second sliding section  156  is in a relationship of L2&gt;L1 with respect to the distance L1 from the first sliding section  54  to the ink tube  66 . 
     In addition, as shown in  FIG. 23 , since the slider member  160  is positioned further on the front surface side (the −Y axis direction side in  FIG. 23 ) in the apparatus depth direction than the second sliding section  156 , the distance L3 from the first sliding section  54  to the slider member  160  has a relationship of L3&gt;L2 with respect to the distance L2 from the first sliding section  54  to the second sliding section  156 . In other words, the distances L1, L2 and L3 have a relationship of L3&gt;L2&gt;L1. 
     If the abovementioned description is summarized, in the carriage  22 , the rotational moment force N1 acts in the clockwise direction in  FIG. 23 , and the rotational moment forces N2 and N3 act in the anticlockwise direction in  FIG. 23 . In this instance, considering the loads (the restoring force F1, the dead weight F2, and the reaction force F4) of the rotational moment forces N1, N2 and N3, since the distances L1, L2 and L3 have the relationship of L3&gt;L2&gt;L1, the rotational moment forces N1, N2 and N3 have a relationship of N2+N3&gt;N1. As a result of this, since the rotational moment forces N2+N3 is greater than the rotational moment force N1, it is possible to suppress the separation of the second sliding section  156  from the second guide member  150 . 
     If the abovementioned description is summarized, the regulation unit  158 , which regulates separation of the second sliding section  156  from the second guide member  150 , is provided in the printer  10   a  in the second example in the arm section  146 , which extends by protruding from the carriage  22  on the front surface side in the apparatus depth direction. Accordingly, the distance L3 between the first sliding section  54  and the regulation unit  158  in the apparatus depth direction is long, and it is even possible to counter the rotational moment force N1 that occurs in the carriage  22  with a small force. As a result of this, the regulation unit  158  can easily suppress the separation of the second sliding section  156  from the second guide member  150 . As a result of this, since the posture of the recording head  32 , and furthermore, the carriage  22  with respect to the target recording medium is stabilized, it is possible to suppress deteriorations in the recording quality on the target recording medium. 
     In addition, since the second sliding section  156  is provided in the arm section  146 , the regulation unit  158  can reliably regulate a circumstance in which the second sliding section  156  becomes separated from the second guide member  150  in the vicinity of the second sliding section  156 . Therefore, since the posture of the recording head  32 , and furthermore, the carriage  22  is stabilized with respect to the target recording medium, it is possible to suppress deteriorations in the recording quality on the target recording medium. 
     In addition, in the regulation unit  158 , the slider member  160 , which is the third sliding section, comes into contact with the facing section  150   b . In other words, the regulation unit  158  regulates displacement of the carriage  22  with respect to a direction in which the second sliding section  156  becomes separated from the support section  150   a  of the second guide member  150  with the first sliding section  54  as a pivot point thereof, by causing the slider member  160  to come into contact with the facing section  150   b . Accordingly, since the regulation unit  158  can more reliably counter the rotational moment force N1, and the posture of carriage  22  is stabilized as a result, it is possible to suppress deteriorations in the recording quality on the target recording medium. 
     In addition, the regulation unit  158  is provided with the spring  162 , which biases the slider member  160  toward the facing section  150   b . In other words, since the spring  162  biases the slider member  160  toward the facing section  150   b , the slider member  160  is subjected to the reaction force F4 from the facing section  150   b , which acts in a direction that is opposite to a direction in which the rotational moment force N1 acts. Accordingly, since the reaction force F4 in the carriage  22  acts in a direction in which the rotational moment force N1 decreases, the regulation unit  158  reliably stabilizes the posture of the carriage  22 , and therefore, it is possible to suppress deteriorations in the recording quality on the target recording medium. 
     In addition, in the present example, the ink tubes  66  extend in the apparatus width direction between the first sliding section  54  and the second sliding section  156  in the apparatus depth direction. Accordingly, the distance L1 from the first sliding section  54  to the ink tubes  66  in the apparatus depth direction is shorter than the distance L3 from the first sliding section  54  to the regulation unit  158 . In other words, the distance L3 from the first sliding section  54  to the regulation unit  158  in the apparatus depth direction is longer than a radius L1 of the rotational moment force N1, which acts on the carriage  22 . Accordingly, the regulation unit  158  can counter the rotational moment force N1 with a smaller force. 
     In addition, in the present example, since the ink tubes  66  are connected to the connection adapters  58 , which are attached to the carriage  22 , above the arm section  146 , by curving and turning back passing below the arm section  146 , it is possible to make a curvature radius of a turnback portion  68  of the ink tube  66  greater. As a result of this, it is possible to reduce the restoring force F1 that attempts to make the curve, which occurs in the ink tube  66 , gentle. As a result of this, it is possible to more reliably suppress a circumstance in which the restoring force F1 resists the dead weight F2 of the carriage  22  and attempts to separate the carriage  22  from the first guide member  48  or the second guide member  150 . Therefore, it is possible to suppress deteriorations in the recording quality on the target recording medium as a result. 
     In addition, as shown in  FIG. 23 , the distance L1 from the first sliding section  54  to the ink tubes  66  in the apparatus depth direction is shorter than the distance L2 from the first sliding section  54  to the second sliding section  156 . Accordingly, it is possible to reduce the rotational moment force N1, which occurs in the carriage  22 , beyond the rotational moment force N2 due to the dead weight F2 of the carriage  22 , which acts on the second sliding section  156 . As a result of this, it is possible to suppress a circumstance in which the carriage  22  attempts to become separated from the second guide member  150 . Therefore, it is possible to suppress deteriorations in the recording quality on the target recording medium as a result. 
     As shown in  FIG. 18 , in the present example, among the ink tubes  66   a ,  66   b ,  66   c  and  66   d , which are arranged in a plurality in the apparatus depth direction, the ink tube  66   a , which is arranged closest to the first sliding section  54 , is wider than the other ink tubes  66   b ,  66   c  and  66   d . In this instance, the restoring force F1 that attempts to make the curve, which occurs in the turnback portion  68  of the ink tubes  66 , gentle becomes larger as the diameters of the ink tubes  66  become wider. Accordingly, in the present example, the ink tube  66   a , which has the largest restoring force F1, is disposed close to the first sliding section  54 , but since it is possible to make the distance L1 between the ink tube  66   a , which has the largest restoring force F1, and the first sliding section  54  smaller, it is possible to reduce the moment force N1 that attempts to rotate the carriage  22  with the first sliding section  54  as the pivot point thereof. Accordingly, it is possible to suppress a circumstance in which the carriage  22  attempts to become separated from the second guide member  150 . Therefore, it is possible to suppress deteriorations in the recording quality on the target recording medium as a result. 
     In addition, as shown in  FIGS. 17 and 18 , among the ink tanks  18   a ,  18   b ,  18   c  and  18   d , at least a part of the ink tank  18   a , which is positioned closest to the second sliding section  156  along the apparatus depth direction, and at least a part of the ink tube  66   a , which has the widest tube diameter, are in the same position in the apparatus depth direction. Further, the ink tank  18   a , which is disposed closest to the second sliding section  156  is connected to the ink tube  66   a , which has the widest tube diameter, through the ink tube  60   a  and the tube diameter conversion member  64 . 
     In other words, the distance in the apparatus depth direction between the ink tank  18   a , which is positioned closest to the second sliding section  156 , and the ink tube  66   a , which has the widest tube diameter, can be said to be shorter than the distances between the other ink tanks  18   b ,  18   c  and  18   d , and the other ink tubes  66   b ,  66   c  and  66   d . Accordingly, in the ink tubes  60   a ,  60   b ,  60   c  and  60   d , which are connected to the tube diameter conversion member  64  by changing toward the apparatus width direction after extending out in the apparatus depth direction from each ink tank  18   a ,  18   b ,  18   c  and  18   d , it is possible to make the pathway length of the ink tube  60   a  the shortest. 
     As a result of this, it is possible to make the pathway length in the ink tubes  60   a  and  66   a , which have the widest tube diameters, from the ink tank  18   a , which is positioned closest to the second sliding section  156 , to the carriage  22  shorter than the pathway lengths in the other ink tubes  60   b ,  60   c ,  60   d ,  66   b ,  66   c  and  66   d  from the ink tanks  18   b ,  18   c  and  18   d  to the carriage  22 . 
     In addition, as can be seen with reference to  FIGS. 15 and 20 , the tube guide member  62  is provided in a state of being separated from the retaining member  40 , which retains the ejection driven roller  38   b  in a manner in which the ejection driven roller  38   b  is capable of rotating, in the apparatus height direction. 
     In the present example, since the tube guide member  62  and the retaining member  40  are separated, the retaining member  40  is not subjected to the restoring force F1, which attempts to make the curve that occurs in the ink tubes  66  gentle, via the tube guide member  62 , and therefore, it is possible to suppress a circumstance in which the retaining member  40  becomes warped as a result of being subjected to the restoring force F1. As a result of this, since it is possible to suppress a circumstance in which the retaining member  40  becomes warped, it is possible to suppress deteriorations in an ejection property of the target recording medium since it is difficult for positional shift of the ejection driven roller  38   b  due to warping of the retaining member  40  to occur. 
     Modification Examples of Second Example 
     (1) In the present example, a configuration in which the ink tubes  66  and the tube guide member  62  pass below the arm section  146 , is used, but in place of this configuration, the ink tubes  66  and the tube guide member  62  may be disposed so as to pass above the arm section  146 . 
     (2) In addition, in the present example, a configuration in which the ink tubes  66  pass below the arm section  146 , which protrudes from the carriage  22 , is used, but in place of this configuration, a configuration in which the second sliding section  156  is provided in a lower section of the housing  44  of the carriage  22  on the apparatus front surface side in a state in which the regulation unit  158  is provided in the end section  146   a  of the arm section  146 , and the ink tubes  66  pass between the first sliding section  54  and the second sliding section  156  in the lower section of the housing  44 , may be used. 
     (3) In addition, in the present example, the tube diameter of the ink tubes  60  and  66  is converted by the tube diameter conversion member  64 , but in place of this configuration, the rigidity of the ink tubes  60  and  66  may be changed. 
     (4) In the present example, a configuration in which the flat sliding site  54   a  and the inverted sliding site  54   b  of the first sliding section  54  slide on the first guide member  48 , which includes the flat section  48   a  and the inverted section  48   b , is used, but in place of this configuration, the first guide member  48  may be an axial member. 
     Third Example 
       FIG. 21  is a perspective view of a carriage according to a third example,  FIG. 22  is a side view of the carriage according to the third example, and  FIG. 24  is a schematic view that shows a relationship between a force and a moment in the carriage according to the third example. 
     A carriage  76  according to a third example will be described with reference to  FIGS. 21 and 22 . The present example differs from the second example in that a regulation unit  178  is provided with a magnetic member  180  in place of the slider member  160  and the spring  162 . Additionally, other configurations are the same as the configurations of the second example, and therefore description thereof will be omitted. Additionally, since it is possible to reduce the effect of the position of a center of gravity by taking a load (the restoring force F1, a dead weight F2, and a reaction force F6) into consideration, consideration of the position of the center of gravity is omitted. 
     In the present example, a second guide member  182  is configured as a flat plate member that is provided with a support section  182   a . In addition, in the present example, the second guide member  182  is configured by a magnetic material. An arm section  146  is provided on the apparatus front surface side of the carriage  76 , and the regulation unit  178  is provided at an end section  146   a  on a tip end side (the apparatus front surface side) of the arm section  146 . 
     In the present example, the regulation unit  178  is provided with a magnetic member  180 . The magnetic member  180  is configured as a magnet as an example. As shown in  FIG. 22 , the second sliding section  156  is provided in the arm section  146  of the carriage  76 . In the present example, the second sliding section  156  is biased toward the support section  182   a  of the second guide member  182  by the dead weight of the carriage  76 . In the present example, the second sliding section  156  is in a state of coming into contact with the support section  182   a  of the second guide member  182 . 
     In the present example, since the magnetic member  180  is provided at the end section  146   a  of the arm section  146 , in which the second sliding section  156  is provided, the magnetic member  180  is in a position that is close to the second guide member  182 . As a result of this, the magnetic member  180  draws the second guide member  182  to a magnetic member  180  side by the magnetic force. As a result of this, the second guide member  182  is drawn to the magnetic member  180  side, a second sliding section  156  side in the present example, by the magnetic force of the magnetic member  180 . Accordingly, the magnetic force of the magnetic member  180  acts in a direction that prevents separation of the second sliding section  156  from the second guide member  182 . 
     Furthermore, a relationship between a force and a rotational moment force that act on the carriage  76  will be described with reference to  FIG. 24 . The rotational moment forces N1 and N2 are the same as those of first example, and therefore description thereof will be omitted. The magnetic member  180  draws the second guide member  182  to the second sliding section  156  side using a magnetic force F5. If the second guide member  182  is displaced in a direction of becoming separated from the magnetic member  180 , a reaction force F6, which is the same size as the magnetic force F5, acts on the magnetic member  180 , and furthermore, the carriage  76 . 
     In addition, in the present example, a rotational moment force N4 in the regulation unit  178  is also set as a moment force that is determined using a distance L4 in the apparatus depth direction instead of a distance of a segment S4 that links the first sliding section  54  and the regulation unit  178 . 
     In this instance, since the reaction force F6 acts on a side of the second sliding section  156  that is opposite to a side on which the restoring force F1 acts, the rotational moment force N4 acts on the arm section  146 , and furthermore, the carriage  76  toward a direction that is opposite to that of the rotational moment force N1. 
     The rotational moment force N4 is represented by the product of the reaction force F6, which the carriage  76  is subjected to, and the distance L4 from the first sliding section  54  to the magnetic member  180 . In other words, the rotational moment force N4 has a relationship of N4=F6×L4. 
     In addition, as shown in  FIG. 24 , since the magnetic member  180  is positioned further on the front surface side (the −Y axis direction side in  FIG. 24 ) in the apparatus depth direction than the second sliding section  156 , the distance L4 from the first sliding section  54  to the magnetic member  180  has a relationship of L4&gt;L2 with respect to the distance L2 from the first sliding section  54  to the second sliding section  156 . In other words, the distances L1, L2 and L4 have a relationship of L4&gt;L2&gt;L1. 
     If the abovementioned description is summarized, in the carriage  76 , the rotational moment force N1 acts in the clockwise direction in  FIG. 24 , and the rotational moment forces N2 and Rotational moment force N4 act in the anticlockwise direction. In this instance, considering the loads (the restoring force F1, the dead weight F2, and the reaction force F6) of the rotational moment forces N1, N2 and N4, since the distances L1, L2 and L4 have the relationship of L4&gt;L2&gt;L1, the rotational moment forces N1, N2 and N4 have a relationship of N2+N4&gt;N1. As a result of this, since the rotational moment forces N2+N4 is greater than the rotational moment force N1, it is possible to suppress the separation of the second sliding section  156  from the second guide member  150 . 
     Modification Examples of Third Example 
     (1) In the present example, a configuration in which the magnetic member  180  is adsorbed to the support section  182   a , is used, but in place of this configuration, a configuration in which the magnetic member  180  and the second guide member  182  are separated in a range in which the magnetic force F5 of the magnetic member  180  acts on the second guide member  182 , may also be used. 
     (2) In the present example, the magnetic member  180  is disposed on the apparatus front surface side of the second sliding section  156  in the apparatus depth direction, but in place of this configuration, a configuration in which the magnetic member  180  is provided below the housing  44  of the carriage  76 , may be used. 
     If the abovementioned description is summarized, a printer in the third example is provided with the recording head  32  that performs recording by discharging ink onto a target recording medium, the carriages  22  and  76 , on which the recording head  32  is provided, and which are capable of moving along the apparatus width direction, the first sliding section  54  that is provided in the carriages  22  and  76 , on the apparatus back surface side in the apparatus depth direction, the second sliding section  156  that is provided in the carriages  22  and  76 , in the arm section  146 , which extends from the apparatus front surface side in the apparatus depth direction, protruding in the apparatus depth direction, the first guide member  48  that supports the carriages  22  and  76  by coming into contact with the first sliding section  54 , and guides movement of the carriages  22  and  76 , the second guide members  150  and  182  that extend in the apparatus width direction, are disposed at an interval from the first guide member  48  in the apparatus depth direction, support the carriages  22  and  76  by coming into contact with the second sliding section  156 , and guide the movement of the carriages  22  and  76 , the ink tanks  18  that accommodate the ink, the ink tubes  60  and  66 , which are ink tubes  60  and  66  that supply the ink, which is delivered from the ink tanks  18 , to the carriages  22  and  76 , extend in the apparatus width direction by extending out from the carriages  22  and  76 , and extend in an opposite direction by turning back in a vertical direction, and the regulation unit  158  and  178  that are provided in the arm section  146  and regulate the separation of the second sliding section  156  from the second guide members  150  and  182 . 
     The second guide member  150  is provided with the support section  150   a  that supports by coming into contact with the second sliding section  156 , and the facing section  150   b  that is positioned above the support section  150   a , and faces the support section  150   a . The regulation unit  158  is provided the slider member  160 , which is capable of sliding in contact with the facing section  150   b . The regulation unit  158  is provided with the spring  162 , which biases the slider member  160  toward the facing section  150   b.    
     The regulation unit  178  is provided with the magnetic member  180 . The magnetic member  180  draws the second guide member  182  to the second sliding section  156  side using a magnetic force. 
     The ink tubes  60  and  66  extend in the apparatus width direction between the first sliding section  54  and the second sliding section  156  in the apparatus depth direction. The ink tubes  66  are connected to the carriages  22  and  76  above the arm section  146 , by curving and turning back passing below the arm section  146 . The distance L1 between the ink tubes  66  and the first sliding section  54  in the apparatus depth direction is shorter than the distance L2 between the first sliding section  54  and the second sliding section  156 . 
     The ink tubes  66  are arranged in a plurality along the apparatus depth direction, and the diameters of the ink tubes  60   a  and  66   a  that is closest to the first sliding section  54  in the apparatus depth direction are wider than the diameters of the other ink tubes ink tubes  60   b ,  60   c ,  60   d ,  66   b ,  66   c  and  66   d . The liquid is ink, and the ink tubes  60   a  and  66   a  with the widest diameters supply black ink to the recording head  32 . The ink tanks  18   a ,  18   b ,  18   c  and  18   d  are provided in a plurality along the apparatus depth direction. Among the plurality of ink tanks  18   a ,  18   b ,  18   c  and  18   d  that are provided, at least a part of the ink tank  18   a  that is positioned closest to the second sliding section  156  in the apparatus depth direction, and at least a part of the ink tubes  60   a  and  66   a  with the widest tube diameters are in the same position in the apparatus depth direction. The ink tank  18   a  that is positioned closest to the second sliding section  156  is connected to the ink tube  60   a  with the widest tube diameter. 
     The printer of the third example includes the tube guide member  62  that extends along the apparatus width direction, and guides the ink tubes  60  and  66 . The tube guide member  62  is arranged below the arm section  146 . The printer of the third example includes the retaining member  40  that extends along the apparatus width direction, and retains the ejection driven roller  38   b , which ejects the target recording medium. The tube guide member  62  and the retaining member  40  are separated in the apparatus height direction. 
     The arm section  146  extends in the lower section of the carriage  22  protruding in the apparatus depth direction from a center of the carriage  22  in the apparatus width direction, and a tip end thereof extends downward. 
     In addition, in abovementioned examples, the carriages  22  and  76  according to the invention are applied to an ink jet printer as an example of a recording apparatus, but it is also possible to apply the carriages  22  and  76  generally to other liquid ejecting apparatuses. 
     In this instance, liquid ejecting apparatuses are not limited to recording apparatuses such as printers, copy machines and facsimiles, in which an ink jet type recording head is used, and which perform recording on a target recording medium by discharging ink from the recording head, and the term includes apparatuses that attach, in place of ink, a liquid that corresponds to the application thereof, to a target ejecting medium that corresponds to a target recording medium by ejecting the liquid onto the target ejecting medium from a liquid ejecting head that corresponds to an ink jet recording head. 
     Other than the abovementioned recording head, examples of liquid ejecting heads include color material ejecting heads that are used in the production of color filters such as liquid crystal displays, electrode material (conductive paste) ejecting heads that are used in electrode formation such as organic EL displays and Field Emission Displays (FED), living organic material ejecting heads that are used in the production of biochips, reagent ejecting heads as precision pipettes, and the like. 
     Additionally, the invention is not limited to the abovementioned examples, various alterations are possible within the range of the invention that is disclosed in the claims, and, naturally, such alterations are also included within the scope of the invention. 
     The entire disclosure of Japanese Patent Application No. 2015-007481 filed on Jan. 19, 2015 and No. 2015-007482 filed on Jan. 19, 2015 are expressly incorporated by reference herein.