Patent Publication Number: US-9840100-B2

Title: Recording apparatus

Description:
BACKGROUND 
     1. Technical Field 
     The present invention relates to a recording apparatus which performs recording on a medium. 
     2. Related Art 
     In the recording apparatus which is represented by a facsimile or a printer, in particular, in the recording apparatus which can perform recording on both surfaces of the medium, a medium transporting path for reversing the medium is necessary. There are various aspects of the medium transporting path for reversing the medium, but, for example, there is a case where a reversing path which bends and reverses the medium and a path which switches back the medium are configured to be combined with each other. In JP-A-2010-221644, an example of such a recording apparatus is disclosed. 
     In the recording apparatus, there are a face-up discharge path which causes a surface on which final recording is performed to be an upper surface and discharges a paper sheet, and a face-down discharge path which causes the surface on which the final recording is performed to be a lower surface and discharges the paper sheet. In this face-down discharge path, in order to bend and reverse the paper sheet, a large space in a height direction of the apparatus is necessary. 
     Therefore, in a configuration in which the reversing path which bends and reverses the medium, a path which switches back the medium, and a face-down discharge path which causes the surface on which the final recording is performed to be the lower surface and discharges the medium are provided, a dimension increase in the height direction of the apparatus is inevitable and is an obstacle in reducing a size of the apparatus. 
     SUMMARY 
     An advantage of some aspects of the invention is to further reduce a size in a configuration in which a reversing path which reverses a medium, a path which switches back the medium, and a face-down discharge path which causes a surface on which final recording is performed to be a lower surface and discharges the medium are provided. 
     According to an aspect of the invention, there is provided a recording apparatus including: a medium accommodation cassette which accommodates a medium; a first transporting path which transports the medium which is fed from the medium accommodation cassette to the above and reverses the medium, and passes through a recording portion that performs recording on the medium in a straight line shape; a second transporting path which is connected to a downstream of the first transporting path, and transports and switches back the medium in a reverse direction after transporting the medium which passes through the recording medium and reversing the medium; a third transporting path which is connected to the second transporting path and allows the medium transported in the reverse direction to bypass an upper side of the recording portion, to be reversed, and to be converged at a position on an upstream side of the recording portion in the first transporting path; a fourth transporting path which is connected to the downstream of the first transporting path, reverses the medium which passes through the recording portion and discharges the medium to be along an outer side of the second transporting path; and a medium receiving tray which receives the medium discharged from the fourth transporting path. Above the medium accommodation cassette, the first transporting path, the recording portion, the third transporting path, and the medium receiving tray are disposed to be overlapped with each other. 
     In this case, after sending the medium which passes through the recording portion, the second transporting path which switches back and transports the medium in the direction reverse to a sending direction is formed along the fourth transporting path which bends, reverses, and discharges the medium which passes through the recording portion. For this reason, the second transporting path and the fourth transporting path do not occupy a region individually and independently in the recording apparatus, and it is possible to further reduce a size of the apparatus. Furthermore, hereinafter, for convenience, there is a case where the second transporting path is called or additionally described as a “switching-back path”, there is a case where the third transporting path is called or additionally described as a “reversing path”, and there is a case where the fourth transporting path is called or additionally described as a “face-down discharge path”. 
     In addition, since the second transporting path (switching-back path) and the fourth transporting path (face-down discharge path) are placed on the side of the third transporting path (reversing path) with respect to the first transporting path, the second transporting path (switching-back path), the third transporting path (reversing path), and the fourth transporting path (face-down discharge path) use at least a part of the same region in the apparatus height direction, and it is possible to more effectively increase a dimension in the height direction of the apparatus. 
     In addition, since the second transporting path (switching-back path) and the third transporting path (reversing path) are in a region occupied by the fourth transporting path (face-down discharge path) in the height direction, the second transporting path (switching-back path) and the third transporting path (reversing path) do not occupy the region independently in the height direction, and it is possible to further reduce the size of the apparatus. 
     Furthermore, since the second transporting path (switching-back path) is disposed on an inner side of the fourth transporting path (face-down discharge path), a path which faces the third transporting path (reversing path) from the second transporting path (switching-back path) does not intersect a path which faces the fourth transporting path (face-down discharge path) from the first transporting path, and it is possible to improve a degree of freedom of control when recording, and further, to improve throughput. 
     In addition, when the recording portion performs recording by ejecting liquid onto the medium, the medium onto which the liquid is ejected tends to consider a surface (recording surface) onto which the liquid is ejected as an outer side and bends the medium (curl tendency). When the medium is reversed in this manner and sent to the recording portion again, the medium considers the surface which faces the recording head as the inner side and bends the medium. For this reason, a tip end or a rear end of the medium is in contact with the recording head, and a so-called head scratch is likely to be generated. 
     However, in this case, since the second transporting path (switching-back path) considers a first surface (a surface on which recording is already performed) which faces the recording head that constitutes the recording portion in the medium which passes through the first transporting path as an inner side, and bends the medium, that is, bends the medium in a direction which corrects the curl tendency, it is possible to prevent or suppress the above-described head scratch. 
     According to the aspect, the medium receiving tray may obtain an upwardly inclined posture which is an upward posture toward a side far from an outlet of the fourth transporting path. The third transporting path may be reversed after being inclined upwardly along the upwardly inclined posture of the medium receiving tray and converge with the first transporting path. 
     In this case, since the third transporting path (reversing path) is reversed after being inclined upwardly along the upwardly inclined posture of the medium receiving tray and converges with the first transporting path, it is possible to reduce a curvature of a reversed part in the third transporting path (reversing path), and to smoothly reverse the medium without applying a force. 
     According to the aspect, in the third transporting path, a roller pair for removing a skew may be disposed in the middle of a reversing path. 
     In this case, since skew-removing is performed even when a skew is generated in the medium in the middle of the reversing path, recording is performed on a rear surface which does not have a shift. 
     According to the aspect, the recording apparatus may further include a manual tray. At a converging portion between the third transporting path and the first transporting path, a feeding path of the manual tray may be converged. 
     In this case, it is possible to reduce the size of the apparatus, and to perform both recording on one surface and recording on both surfaces of the medium fed by the manual tray. 
     According to the aspect, the recording apparatus may further include: a first flap which switches a downstream of the first transporting path and an upstream of the second transporting path to be in a connected state and a disconnected state; and a second flap which connects the second transporting path and the third transporting path to each other when the connected state is switched to the disconnected state by the first flap. 
     In this case, it is possible to dispose the second transporting path which is the switching-back path to be along the fourth transporting path which is the discharge path, and to reduce the size of the apparatus. 
     According to the aspect, after a first medium is fed to the first transporting path and recording is performed in the recording portion, the first transporting path and the second transporting path may be connected to each other by the first flap, and the first medium may be transported to the second transporting path. After this, when the following second medium is fed to the first transporting path, the second transporting path and the third transporting path are connected to each other by the second flap, and the first medium is transported to the third transporting path, the second medium may be transported to the recording portion, and recording may be performed. 
     In this case, even when the following second medium is transported, it is possible to transport the second medium without interfering the transporting of the first medium, and to improve throughput of recording on both surfaces while reducing the size of the apparatus. 
     According to the aspect, after the first medium is transported to the third transporting path, the first transporting path and the second transporting path may be connected to each other by the first flap, and the second medium may be transported to the second transporting path. After this, the first medium which is reversed in the third transporting path may be transported to the recording portion and recording may be performed, the first flap may be in the disconnected state, and the first transporting path and the fourth transporting path may be connected to each other. 
     In this case, even when the following second medium is transported, it is possible to transport the second medium without interfering the transporting of the first medium, and to improve throughput of recording on both surfaces while reducing the size of the apparatus. 
     According to the aspect, the first medium may be transported to the fourth transporting path. When the second transporting path and the third transporting path are connected to each other by the second flap, and the second medium is transported to the third transporting path, the following third medium may be fed to the first transporting path and may be transported to the recording portion, and recording may be performed. 
     In this case, furthermore, even when the following third medium is transported, it is possible to transport the third medium without interfering the transporting of the first medium and the second medium, and to improve throughput of recording on both surfaces while reducing the size of the apparatus. 
     According to the aspect, the second transporting path and the third transporting path may be respectively provided with a plurality of spurs on a side which faces a recording surface of the medium on which recording is performed in the recording portion. 
     In this case, while reducing the size of the apparatus, when reversing the medium for recording on the rear surface, it is possible to suppress contact with the recording surface on which recording is performed on one side, and to suppress deterioration of recording quality. 
    
    
     
       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 appearance perspective view of a printer according to the invention. 
         FIG. 2  is a view illustrating a medium transporting path in the printer according to the invention. 
         FIG. 3  is a perspective view illustrating a state of a flap which connects a first transporting path and a second transporting path to each other when transporting a medium from the first transporting path to the second transporting path. 
         FIG. 4  is a perspective view illustrating a state of a flap which connects the second transporting path and a third transporting path to each other when transporting a medium from the second transporting path to the third transporting path. 
         FIG. 5  is a perspective view in a state where an opening/closing body which constitutes a part of a transporting path is opened with respect to an apparatus main body in the printer according to the invention. 
         FIG. 6  is a perspective view illustrating a medium receiving tray in the printer according to the invention. 
         FIG. 7  is a perspective view in a state where the medium receiving tray is opened with respect to the apparatus main body. 
         FIG. 8  is a perspective view illustrating a state where a unit body is drawn out in the apparatus main body. 
         FIG. 9  is a perspective view of the printer according to the invention. 
         FIG. 10  is a perspective view illustrating a state where a unit which constitutes a part of the medium transporting path is drawn out from the apparatus main body. 
         FIG. 11  is a perspective view illustrating a state where a cover on a front surface side of the printer is opened. 
         FIG. 12  is a perspective view illustrating a state where the cover on the front surface side of the printer is opened, the unit is drawn out from the apparatus main body, and it is possible to access a transporting roller pair from an opening. 
         FIG. 13  is a perspective view of the transporting roller pair which can be accessed from an opening portion. 
         FIG. 14  is a view illustrating a first state of a transported medium in the medium transporting path. 
         FIG. 15  is a view illustrating a second state of the transported medium in the medium transporting path. 
         FIG. 16  is a view illustrating a third state of the transported medium in the medium transporting path. 
         FIG. 17  is a view illustrating a fourth state of the transported medium in the medium transporting path. 
         FIG. 18  is a view illustrating a fifth state of the transported medium in the medium transporting path. 
         FIG. 19  is a view illustrating a sixth state of the transported medium in the medium transporting path. 
         FIG. 20  is a view illustrating a state where an opening/closing unit is detached from the medium transporting path. 
         FIG. 21  is a view illustrating a state where an upper side member is moved rotationally and an upper portion section is exposed in the medium transporting path. 
         FIG. 22  is a view illustrating the second state where the unit body opens the medium transporting path in the medium transporting path. 
     
    
    
     DESCRIPTION OF EXEMPLARY EMBODIMENTS 
     Hereinafter, an embodiment of the invention will be described based on the drawings. Furthermore, the same configurations in each embodiment will be given the same reference numerals, and will be described only in a first embodiment. The description of the same configuration will be omitted in the following embodiments. 
       FIG. 1  is an external appearance perspective view of a printer according to the invention.  FIG. 2  is a view illustrating a medium transporting path in the printer according to the invention.  FIG. 3  is a perspective view illustrating a state of a flap which connects a first transporting path and a second transporting path to each other when transporting a medium from the first transporting path to the second transporting path.  FIG. 4  is a perspective view illustrating a state of the flap which connects the second transporting path and a third transporting path to each other when transporting a medium from the second transporting path to the third transporting path.  FIG. 5  is a perspective view in a state where an opening/closing body which constitutes a part of a transporting path is opened with respect to an apparatus main body in the printer according to the invention. 
       FIG. 6  is a perspective view illustrating a medium receiving tray in the printer according to the invention.  FIG. 7  is a perspective view in a state where the medium receiving tray is opened with respect to the apparatus main body.  FIG. 8  is a perspective view illustrating a state where a unit body is drawn out in the apparatus main body.  FIG. 9  is a perspective view of the printer according to the invention.  FIG. 10  is a perspective view illustrating a state where a unit which constitutes a part of the medium transporting path is drawn out from the apparatus main body. 
       FIG. 11  is a perspective view illustrating a state where a cover on a front surface side of the printer is opened.  FIG. 12  is a perspective view illustrating a state where the cover on the front surface side of the printer is opened, the unit is drawn out from the apparatus main body, and it is possible to access a transporting roller pair from an opening.  FIG. 13  is a perspective view of the transporting roller pair which can be accessed from an opening portion.  FIG. 14  is a view illustrating a first state of a transported medium in the medium transporting path.  FIG. 15  is a view illustrating a second state of the transported medium in the medium transporting path. 
       FIG. 16  is a view illustrating a third state of the transported medium in the medium transporting path.  FIG. 17  is a view illustrating a fourth state of the transported medium in the medium transporting path.  FIG. 18  is a view illustrating a fifth state of the transported medium in the medium transporting path.  FIG. 19  is a view illustrating a sixth state of the transported medium in the medium transporting path.  FIG. 20  is a view illustrating a state where an opening/closing unit is detached from the medium transporting path.  FIG. 21  is a view illustrating a state where an upper side member is moved rotationally and an upper portion section is exposed in the medium transporting path.  FIG. 22  is a view illustrating the second state where the unit body opens the medium transporting path in the medium transporting path. 
     In an X-Y-Z coordinate illustrated in each drawing, an X direction is a depth direction of a recording apparatus and a width direction of the medium, a Y direction is a width direction of the recording apparatus and a transporting direction of the medium, and a Z direction is an apparatus height direction. Furthermore, in each drawing, a −X direction side is an apparatus front surface side, and a +X direction side is an apparatus rear surface side. 
     Overview of Printer and Transporting Path 
     An ink jet printer  10  (hereinafter, referred to as a printer  10 ) 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 printer which is provided with an apparatus main body  12  and a scanner unit  14 . The apparatus main body  12  is provided with a plurality of medium accommodation cassettes  16  which accommodates the medium. Each medium accommodation cassette  16  is attached to be detachable from a front surface side (−X axis direction side in  FIG. 1 ) of the apparatus main body  12 . Furthermore, a medium P in the specification indicates a paper sheet, such as a plain paper sheet, cardboard, or a photo paper sheet. 
     In addition, in the apparatus height direction (Z axis direction) in the apparatus main body  12 , between the scanner unit  14  and the medium accommodation cassette  16 , a medium receiving tray  20  which receives the medium P on which recording is performed in a recording portion  18  which will be described later is provided. 
     With reference to  FIGS. 2 and 14 , a transporting path of the medium P in the printer  10  will be described. Furthermore, in  FIG. 2 , only main configuration elements of the transporting path of the medium P are given reference numerals, and in particular, the reference numerals of a plurality of provided spurs will be omitted. Meanwhile, in  FIG. 14 , detail configuration elements of the transporting path of the medium P will be given the reference numerals. 
     The printer  10  in the embodiment is provided with a medium transporting path  21 . The medium transporting path  21  is configured of a straight path  22  as a “first transporting path”, a switching-back path  24  as a “second transporting path”, a reversing path  26  as a “third transporting path”, a face-down discharge path  28  as a “fourth transporting path”, and a feeding path  30  which is connected to the straight path  22  from the medium accommodation cassette  16 . 
     In the feeding path  30 , a feeding roller  32 , a separation roller pair  33 , and a first transporting roller pair  34  are provided in order along the transporting direction of the medium P. The feeding roller  32  is driven to be rotated by a driving source which is not illustrated. One roller  33   a  of the separation roller pair  33  is a roller which is rotated in a driven manner in a state where predetermined rotational resistance is applied, and performs separation of the medium P by nipping the medium P between the other roller  33   b  (a roller which is driven to be rotated) and one roller  33   a.    
     One roller  34   a  of the first transporting roller pair  34  is configured as a driven roller which is rotated in a driven manner according to rotation driving of the other roller  34   b . The other roller  34   b  is configured as driving roller which is driven to be rotated by the driving source which is not illustrated. 
     Furthermore, in the embodiment, one roller  34   a  and the other roller  34   b  of the first transporting roller pair  34  are configured of rubber rollers. In addition, each of the driving rollers is controlled by a control portion (not illustrated) provided in the apparatus main body  12  via the driving source which is not illustrated. In addition, a recording head  48  which will be described later is also controlled by the control portion. In other words, the control portion is configured to be able to perform necessary control in a recording operation in the printer  10 . 
     Furthermore, in the description below, it is described that one roller in each transporting roller pair illustrated in the specification is configured as the driven roller, and the other roller is configured as the driving roller which is driven to be rotated by the driving source which is not illustrated. In addition, in the embodiment, when there is no specific description, one roller is configured as the spur which is provided with a plurality of teeth on an outer circumference, and the driving roller which is the other roller is configured as the rubber roller, for example. 
     As illustrated in  FIG. 2 , the medium P accommodated in the medium accommodation cassette  16  is supported on a hopper  17  provided in the medium accommodation cassette  16 . The hopper  17  moves rotationally by considering a rotating shaft  17   a  provided in the hopper  17  as a fulcrum, and lifts up the medium P to the above. At this time, the feeding roller  32  comes into contact with the uppermost medium P among the media P supported by the hopper  17 , and transports the medium P to the downstream side of the transporting direction. At this time, there is a case where the media P following the uppermost medium P is also transported together with the uppermost medium P. However, the uppermost medium P and the media P following the uppermost medium P are separated from each other by the separation roller pair  33 , and only the uppermost medium P is transported to the downstream side of the transporting direction. 
     Hereinafter, the description will refer to  FIG. 14 . Furthermore, in the embodiment, in the description, it is assumed that there is the face-down discharging operation which discharges the medium by considering the recording surface of the medium P as a lower surface toward the medium receiving tray  20 . On the downstream side of the transporting direction of the first transporting roller pair  34 , a second transporting roller pair  36  is provided. The second transporting roller pair  36  is also provided with one roller  36   a  and the other roller  36   b.    
     At a position of the second transporting roller pair  36  in the embodiment, the feeding path  30  and the straight path  22  are connected to each other. In other words, the feeding path  30  is set as a path from the medium accommodation cassette  16  to the second transporting roller pair  36 . 
     The straight path  22  is configured as a path which extends in a straight line shape, and is provided with the second transporting roller pair  36 , a third transporting roller pair  38 , the recording portion  18 , a spur  40 , a fourth transporting roller pair  42 , a spur  44 , and a first flap  46  in order along the transporting direction. Furthermore, the straight path  22  in the embodiment is set as a path from the second transporting roller pair  36  to the first flap  46 . In other words, the straight path  22  is set as a path which passes through the recording portion  18  and extends to the upstream side and the downstream side of the recording portion  18 . 
     The third transporting roller pair  38  is provided with one roller  38   a  and the other roller  38   b . Next, the recording portion  18  is provided with the recording head  48 . When the medium P is transported to a position which faces the recording head  48 , the recording head  48  in the embodiment is configured to eject ink onto the recording surface of the medium P and performs recording. The recording head  48  according to the embodiment is a recording head in which a nozzle which ejects the ink is provided to cover the entire paper sheet in the width direction, and is configured as a recording head which can perform recording on the entire paper sheet in the width direction, not following the movement in a paper sheet width direction. 
     In the transporting path on the downstream side of the recording portion  18 , that is, the recording head  48 , on a side which faces the recording surface of the medium P, the spur  40 , one roller  42   a  (spur) of the fourth transporting roller pair  42 , and the spur  44  are provided to be rotatable. In other words, as paper guiding is performed by these spurs on the recording surface of the medium P, it is possible to reduce a contact area on the recording surface, to control transfer to or white spots on the recording surface, and to control deterioration of recording quality. 
     Next, the first flap  46  is positioned on the downstream side of the transporting direction of the spur  44 . By a driving mechanism which is controlled by the control portion (not illustrated) provided in the apparatus main body  12 , the first flap  46  is configured to be able to switch to connect the straight path  22  and the switching-back path  24  to each other (state in  FIG. 14 ), or to connect the straight path  22  and the face-down discharge path  28  to each other (state in  FIG. 16 ). Furthermore, the driving mechanism which drives the first flap  46  in the embodiment is configured of a solenoid. In addition, the switching operation of a posture of the first flap  46  is controlled by the control portion (not illustrated). 
     In other words, when the straight path  22  and the switching-back path  24  are connected to each other by the first flap  46 , the medium P is sent to the switching-back path  24  from the straight path  22  by the fourth transporting roller pair  42  (refer to  FIG. 3 ). In addition, when the straight path  22  and the face-down discharge path  28  are connected to each other, the medium P is sent to the face-down discharge path  28  from the straight path  22  by the fourth transporting roller pair  42  (refer to  FIG. 19 ). 
     Furthermore, here, a second flap  50  will be described. The second flap  50  is provided above the first flap  46  in the apparatus height direction (Z axis direction). The second flap  50  is interlocked with the operation of the first flap  46  and is driven by an interlocking mechanism which is not illustrated. In other words, the second flap  50  is controlled by the control portion via the first flap  46  and the interlocking mechanism. 
     When describing specific operations, in a state where the first flap  46  connects the straight path  22  and the switching-back path  24  to each other (refer to  FIG. 14 ), the second flap  50  has a posture of blocking the connection between the switching-back path  24  and the reversing path  26 . Meanwhile, in a state where the first flap  46  connects the straight path  22  and the face-down discharge path  28  to each other as illustrated in  FIG. 16 , the second flap  50  has a posture of connecting the switching-back path  24  and the reversing path  26  to each other. 
     The face-down discharge path  28  will be described with reference to  FIG. 14  again. The face-down discharge path  28  extends to the upper side from the straight path  22  in the apparatus height direction, and is bent and reversed. The face-down discharge path  28  is provided with a fifth transporting roller pair  52 , a sixth transporting roller pair  54 , a seventh transporting roller pair  56 , an eighth transporting roller pair  58 , a ninth transporting roller pair  60 , a tenth transporting roller pair  62 , and a plurality of spurs  64 . 
     The face-down discharge path  28  is a path from the first flap  46  to an outlet  28   a  which is positioned on the downstream side of the transporting direction of the tenth transporting roller pair  62 . In other words, the face-down discharge path  28  is a transporting path which is connected to the straight path  22 , and is a path which bends, reverses, and discharges the medium P which passes through the recording portion  18 . 
     The medium P in which recording is performed on the recording surface in the recording portion  18  is transported to be nipped by the fifth transporting roller pair  52 , the sixth transporting roller pair  54 , the seventh transporting roller pair  56 , the eighth transporting roller pair  58 , the ninth transporting roller pair  60 , and the tenth transporting roller pair  62  in order along the transporting direction from the first flap  46  in the face-dawn discharge path  28 . Then, the medium P is discharged from the outlet  28   a  toward the medium receiving tray  20 . 
     Here, when the medium P is transported in the face-down discharge path  28 , the medium P is transported by considering the recording surface on which the final recording is performed by the recording portion  18  as an upper surface, then, the medium P is transported by bending the recording surface toward an inner side of a bent part of the face-down discharge path  28 , and the medium P is discharged from the outlet  28   a  by considering the recording surface as a lower surface toward the medium receiving tray  20 . 
     In addition, one roller  52   a  of the fifth transporting roller pair  52 , one roller  54   a  of the sixth transporting roller pair  54 , one roller  56   a  of the seventh transporting roller pair  56 , one roller  58   a  of the eighth transporting roller pair  58 , one roller  60   a  of the ninth transporting roller pair  60 , one roller  62   a  of the tenth transporting roller pair  62 , and a plurality of spurs  64  are disposed on the inner side of the bent part of the face-down discharge path  28 , that is, on a side which faces the recording surface on which the final recording is performed in the recording portion  18 . 
     Furthermore, the other roller  52   b  of the fifth transporting roller pair  52 , the other roller  54   b  of the sixth transporting roller pair  54 , the other roller  56   b  of the seventh transporting roller pair  56 , the other roller  58   b  of the eighth transporting roller pair  58 , the other roller  60   b  of the ninth transporting roller pair  60 , and the other roller  62   b  of the tenth transporting roller pair  62  are disposed on the outer side of the bent part of the face-down discharge path  28 , that is, on a side opposite to the side which faces the recording surface on which the final recording is performed in the recording portion  18 . 
     In other words, when the medium P is transported, the plurality of spurs which are disposed on the inner side of the bent part of the face-down discharge path  28  comes into contact with the recording surface on which the final recording is performed in the recording portion  18 . Therefore, it is possible to suppress contact with the recording surface to a minimum, and to suppress deterioration of recording quality of the medium P. 
     Here, the medium receiving tray  20  will be described with reference to  FIG. 2  again. The medium receiving tray  20  has an upwardly inclined posture, which is an upward (+Z axis direction) posture toward a side far from the outlet  28   a  of the face-down discharge path  28 , that is, a −Y axis direction side. The medium receiving tray  20  is configured to have the medium P discharged from the face-down discharge path  28  mounted thereon. Furthermore, the medium receiving tray  20  in the embodiment is disposed above the recording portion  18  in the Z axis direction, that is, on a +Z axis direction side. 
     Next, the switching-back path  24  will be described with reference to  FIG. 14  again. After recording is performed on the first surface in the medium P, when recording is performed on a second surface, that is, when recording is performed on both surfaces, the switching-back path  24  and the reversing path  26  are paths through which the medium P passes. Furthermore, similarly, when recording is performed not on the first surface but on the second surface, the medium P passes through the switching-back path  24  and the reversing path  26 . In other words, recording on both surfaces in the specification means that recording is performed on the second surface by reversing the medium P regardless of whether or not recording is performed on the first surface. 
     The switching-back path  24  is positioned on the inner side of the face-down discharge path  28  which is bent and reversed upwardly in the apparatus height direction, and extends along the face-down discharge path  28 . The switching-back path  24  is provided with an eleventh transporting roller pair  66  and a plurality of spurs  68 . One roller  66   a  of the eleventh transporting roller pair  66  and the plurality of spurs  68  are disposed on an inner side of the switching-back path  24  in a bending direction. In addition, the other roller  66   b  of the eleventh transporting roller pair  66  is disposed on an outer side of the switching-back path  24  in the bending direction. 
     In addition, in the embodiment, the switching-back path  24  is set as a path from the second flap  50  to an opening  24   a  which is provided at a tip end of the switching-back path  24 . As illustrated in  FIGS. 3 and 14 , when the switching-back path  24  and the straight path  22  are connected to each other by the first flap  46 , the medium P is sent into the switching-back path  24  through the first flap  46  from the recording portion  18  by the fourth transporting roller pair  42 . The medium P is sent to a position at which a rear end portion in the transporting direction in the switching-back path  24  is nipped by the eleventh transporting roller pair  66 . 
     Furthermore, at this time, there is a case where a length of the medium P in the transporting direction is longer than a length of the switching-back path  24 . In this case, the tip end side of the medium P is in a state of being exposed to the outer side of the apparatus main body  12  as a tip end part of the medium P protrudes from the opening  24   a  provided at the tip end of the switching-back path  24 . When the medium P is sent into the reversing path  26 , the tip end part of the medium P protruded from the opening  24   a  is drawn into the switching-back path  24  from the opening  24   a . Therefore, it is possible to respond to a case where the length of the medium P in the transporting direction is longer than the length of the switching-back path  24 . 
     In addition, when the posture in a state where the first flap  46  connects the straight path  22  and the switching-back path  24  to each other (refer to  FIG. 14 ) is switched to the posture in a state where the first flap  46  disconnects the straight path  22  and the switching-back path  24  from each other (refer to  FIG. 16 ), the posture is switched to a posture in a state where the second flap  50  connects the switching-back path  24  and the reversing path  26  to each other (refer to  FIGS. 4 and 16 ). 
     Accordingly, the control unit rotates the eleventh transporting roller pair  66  in a direction reverse to a direction in which the medium P is sent into the switching-back path  24 , and sends out the medium P to the reversing path  26  by considering the rear end side of the medium P as the tip end side. In other words, the medium P is switched back. Therefore, the switching-back path  24  is a transporting path which is connected to the straight path  22 , and is a path which transports the medium P in the direction reverse to the direction in which the medium P is switched back and sent after the medium P which passes through the recording portion  18  is sent. 
     Next, the reversing path  26  will be described with reference to  FIG. 14 . The reversing path  26  is set as a path which passes through the above of the recording portion  18  from the second flap  50 , and reaches the second transporting roller pair  36  of the straight path  22 . 
     The reversing path  26  is provided with a twelfth transporting roller pair  70 , a thirteenth transporting roller pair  72 , a fourteenth transporting roller pair  74 , and a plurality of spurs  76 . The other roller  70   b  of the twelfth transporting roller pair  70 , the other roller  72   b  of the thirteenth transporting roller pair  72 , and the other roller  74   b  of the fourteenth transporting roller pair  74  in the reversing path  26  are provided on the inner side of the transporting path with respect to the recording portion  18 , that is, near the recording portion  18 . In addition, one roller  70   a  of the twelfth transporting roller pair  70 , one roller  72   a  of the thirteenth transporting roller pair  72 , and the spurs  76  are provided on the outer side of the transporting path. 
     In addition, in the embodiment, a part from a spur which is given a reference numeral  76   a  to a spur which is given a reference numeral  76   b  through the twelfth transporting roller pair  70  and the thirteenth transporting roller pair  72 , is considered as an upper portion section  26   a , and a part from the spur which is given the reference numeral  76   b  to the second transporting roller pair  36 , is considered as a reversing portion  26   b.    
     The upper portion section  26   a  is provided with an upper side member  78  (refer to  FIG. 2 ) which is a path forming member that forms the upper portion section  26   a . The upper side member  78  is positioned on an upper side of the upper portion section  26   a , and the medium receiving tray  20  is formed on the upper portion thereof. In other words, an upper surface of the upper side member  78  constitutes the medium receiving tray  20 , and a lower surface of the upper side member  78  constitutes a part of the upper portion section  26   a . In other words, the upper side member  78  is formed to be integrated with the medium receiving tray  20 . 
     In addition, in the reversing path  26 , the spurs  76 ,  76   a , and  76   b  which are positioned in the upper portion section  26   a , one roller  70   a  of the twelfth transporting roller pair  70 , and one roller  72   a  of the thirteenth transporting roller pair  72  are attached to the upper side member  78  to be rotatable. 
     In addition, as illustrated in  FIG. 2 , in the upper side member  78 , a rotation fulcrum  80  is provided in a +Y axis direction side end portion. Therefore, the upper side member  78  can obtain a posture in which the upper portion section  26   a  is closed (refer to a solid line portion in  FIG. 2 ) and a posture in which the upper portion section  26   a  is opened (refer to a two dot chain line portion in  FIG. 2 ). Furthermore, rotational movement of the upper side member  78  will be described later in detail. 
     With reference to  FIG. 14  again, the upper portion section  26   a  in the reversing path  26  is inclined upwardly (+Z axis direction) and extends in a −Y axis direction. In other words, the upper portion section  26   a  extends along the medium receiving tray  20  (refer to  FIG. 2 ). As a result, it is possible to reduce a curvature of a part in which the medium is bent and reversed in the reversing portion  26   b , that is, a reversed part, and to smoothly transport the medium P since it is not necessary to bend the medium P forcibly. 
     An outlet side of the reversing portion  26   b  is configured to converge with the straight path  22  at an upstream position of the second transporting roller pair  36  in the straight path  22 . Then, the medium P is sent into the straight path  22  again. In other words, the reversing path  26  is a transporting path which is connected to the switching-back path  24 , and is set as a path which allows the medium P which is transported in the reverse direction, that is, the medium P which is switched back to bypass the upper side of the recording portion  18 , to be reversed, and to be converged by the second transporting roller pair  36  which is positioned at the upstream side position of the recording portion  18  in the straight path  22 . 
     Here, when the medium P is converged with the straight path  22  from the reversing path  26 , skew-removing is performed. In the embodiment, one roller  74   a  of the fourteenth transporting roller pair  74  is configured as a resin roller. In addition, in a path between the second transporting roller pair  36  and the fourteenth transporting roller pair  74 , a spur  82  is provided to be rotatable on the inner side of the transporting path. 
     In other words, as the medium P which is transported along the reversing path  26  is nipped by the fourteenth transporting roller pair  74 , and the tip end of the medium P butts against the second transporting roller pair  36 , skew-removing is performed. At this time, the spur  82  suppresses a scratch generated between the medium which is bent when skew-removing is performed and the path forming member in the reversing path  26 . 
     Above, an overview of the medium transporting path when the face-down discharge is performed with respect to the medium receiving tray  20  in the printer  10  is described. In the embodiment, when recording on both surfaces with respect to the medium P, that is, recording on the first surface and the second surface of the medium P, is performed in the printer  10 , the transporting path of the medium P goes through the straight path  22 , the recording portion  18 , the switching-back path  24 , and the reversing path  26  from the medium accommodation cassette  16 , passes through the straight path  22  and the recording portion  18  again, and reaches the medium receiving tray  20  through the face-down discharge path  28 . 
     In addition, the printer  10  in the embodiment is also configured to be able to perform a face-up discharge. A part of the path forming member between the other roller  54   b  of the sixth transporting roller pair  54  and the other roller  56   b  of the seventh transporting roller pair  56  in the face-down discharge path  28  is configured as a third flap  84 . The third flap  84  is configured to be able to switch a posture (refer to  FIGS. 2 and 14 ) which constitutes the transporting path of the face-down discharge path  28  to a face-up discharge posture (not illustrated). Furthermore, the third flap  84  in the embodiment is controlled by the control portion. 
     As the third flap  84  switches the posture to the face-up discharge posture, the medium P which is sent to the face-down discharge path  28  from the straight path  22  is discharged by considering the recording surface of the medium P as the upper surface to a face-up discharge tray  86  illustrated in  FIG. 8  via the third flap  84 . 
     In addition, a dotted line which is given a reference numeral  88  in  FIG. 2  illustrates a manual feeding path of the medium P which is supplied from a manual tray  90  in a state where the manual tray  90  (refer to  FIG. 1 ) is moved rotationally with respect to the apparatus main body  12  and opened. The manual feeding path  88  is configured to be converged with the feeding path  30 . Accordingly, the medium P which is supplied from the manual feeding path  88  is also configured to be able to perform both recording on one surface and recording on both surfaces in the printer  10 . Furthermore, a posture in which the manual tray  90  is opened with respect to the apparatus main body  12  is omitted in the drawing. 
     Regarding Transporting Plurality of Media in Printer 
     Next, with reference to  FIGS. 14 to 19 , transporting of the medium in the medium transporting path when recording is performed on both surfaces of a plurality of media Pn in the printer  10  will be described. Furthermore, in  FIGS. 14 to 19 , a dotted line which is given a reference numeral P 1  is a medium which is transported first in the transporting path, a dotted line which is given a reference numeral P 2  is a medium which is transported second, and a dotted line which is given a reference numeral P 3  is a medium which is transported third. 
     The medium P 1 , which is sent along the feeding path  30  by the feeding roller  32  (refer to  FIG. 2 ) from the medium accommodation cassette  16  (refer to  FIG. 2 ) as illustrated in  FIG. 14 , is transported to a position which faces the recording portion  18  which is nipped by the second transporting roller pair  36  and the third transporting roller pair  38  in order, that is, the recording head  48 . Then, recording is performed on a first surface of the medium P 1  in the recording portion  18 . The medium P 1  in which recording is performed on the first surface is nipped by the fourth transporting roller pair  42 , and is transported toward the first flap  46  which is at a position on the downstream side of the transporting direction of the fourth transporting roller pair  42 . 
     At this time, the first flap  46  obtains a posture in which the straight path  22  and the switching-back path  24  are connected to each other. Then, as illustrated in  FIG. 15 , the medium P 1  is sent into the switching-back path  24  through the first flap  46  by the fourth transporting roller pair  42 . 
     Then, the medium P 1  is sent along the switching-back path  24  to a position at which a rear end of the medium P 1  which is nipped by the eleventh transporting roller pair  66  does not interfere with the second flap  50 . At this time, the secondary medium P 2  is sent out to the feeding path  30  from the medium accommodation cassette  16  by the feeding roller  32 . 
     Next, as illustrated in  FIG. 16 , the control portion (not illustrated) has a function of switching the posture of the first flap  46 , and connecting the straight path  22  and the face-down discharge path  28  to each other. As a result, the second flap  50  interlocks with the operation of the first flap  46 , and obtains a posture in which the switching-back path  24  and the reversing path  26  are connected to each other. Then, the eleventh transporting roller pair  66  is driven to be rotated by control of the control portion in the direction reverse to the direction in which the medium P 1  is sent into the switching-back path  24 . As a result, by considering the rear end side of the transporting direction when the medium P 1  is sent into the switching-back path  24  as the tip end side of the transporting direction, the medium P 1  is sent out to the reversing path  26 . In other words, the medium P 1  is switched back. At this time, recording is performed on the first surface of the medium P 2  in the recording portion  18 . 
     Next, as illustrated in  FIG. 17 , the medium P 1  is nipped by the twelfth transporting roller pair  70  and the thirteenth transporting roller pair  72  in order, and is transported to the upper portion section  26   a  which is positioned above the recording portion  18  in the reversing path  26 . Furthermore, if the medium P 1  passes through the second flap  50 , the posture of the first flap  46  is switched, and the straight path  22  and the switching-back path  24  are connected to each other again. 
     The medium P 2  in which recording on the first surface is finished in the recording portion  18  is transported to the switching-back path  24  through the fourth transporting roller pair  42 , the first flap  46 , and the eleventh transporting roller pair  66 . Furthermore, according to the posture switch of the first flap  46 , the second flap  50  switches a posture to a posture in which the switching-back path  24  and the reversing path  26  are disconnected from each other. 
     Next, as illustrated in  FIG. 18 , when the medium P 1  is transported along the reversing portion  26   b  of the reversing path  26 , the first surface and the second surface are reversed to each other, and the medium P 1  is nipped by the fourteenth transporting roller pair  74  and transported toward the straight path  22 . At this time, the tip end of the medium P butts against the second transporting roller pair  36  and skew-removing is performed. Then, the medium P 1  is sent into the straight path  22  as the second surface faces toward the side which faces the recording head  48  of the recording portion  18 . The medium P 1  which is sent into the straight path  22  is nipped by the second transporting roller pair  36  and the third transporting roller pair  38  in order, and transported to the recording portion  18 . 
     Then, recording is performed on the second surface of the medium P 1  in the recording portion  18 . Furthermore, the first flap  46  is provided in discharging the medium P 1 , and switches the posture in which the straight path  22  and the switching-back path  24  are connected to each other to the posture in which the straight path  22  and the face-down discharge path  28  are connected to each other, by the control portion. In addition, the second flap  50  is also interlocked with the first flap  46 , and switches the posture in which the switching-back path  24  and the reversing path  26  are disconnected from each other to the posture in which the switching-back path  24  and the reversing path  26  are connected to each other. 
     Next, as illustrated in  FIG. 19 , the medium P 1  in which recording is performed on the second surface in the recording portion  18  is transported to the face-down discharge path  28  by the fourth transporting roller pair  42 . The medium P 1  is nipped by the fifth transporting roller pair  52 , the sixth transporting roller pair  54 , the seventh transporting roller pair  56 , the eighth transporting roller pair  58 , the ninth transporting roller pair  60 , and the tenth transporting roller pair  62  in order in the face-down discharge path  28 , is transported to the downstream side of the transporting direction, and is discharged toward the medium receiving tray  20  from the outlet  28   a  of the face-down discharge path  28  by considering a surface on which the final recording is performed, that is, the second surface, as the lower surface. 
     Furthermore, at this time, the medium P 2  is sent into the reversing path  26  from the switching-back path  24  by the eleventh transporting roller pair  66 . Then, the third medium P 3  enters the straight path  22 , and is transported to the recording portion  18 . Then, recording is performed on a first surface of the medium P 3  in the recording portion  18 . 
     Then, the medium P 3  is sent into the switching-back path  24  by the fourth transporting roller pair  42  and the eleventh transporting roller pair  66  through the first flap  46  which switches the posture in which the straight path  22  and the face-down discharge path  28  are connected to each other to the posture in which the straight path  22  and the switching-back path  24  are connected to each other. Furthermore, if the medium P 3  passes through the first flap  46 , the posture is switched again. Then, recording is performed on a second surface of the medium P 3  sent from the reversing path  26  in the recording portion  18 , and the medium P 3  passes through the face-down discharge path  28  and is discharged to the medium receiving tray  20 . 
     After this, until recording is performed on the second surface of the predetermined number of media Pn, the medium Pn is discharged to the medium receiving tray  20 , and the recording operation is finished, after recording is performed on the first surface of the medium Pn−1 in the recording portion  18 , while the medium Pn−1 is transported to the switching-back path  24  and the reversing path  26 , recording is performed on the first surface of the medium Pn in the recording portion  18 . After this, the medium Pn is transported to the switching-back path  24  from the straight path  22 . 
     Then, after the medium Pn is transported to the switching-back path  24 , the operations of recording on the second surface of the medium Pn−1 in the recording portion  18 , and discharging the medium Pn−1 to the medium receiving tray  20  from the face-down discharge path  28 , are repeated. Above, transporting of the medium in the medium transporting path  21  when recording is performed on both surfaces of the plurality of media Pn in the printer  10  is described. 
     In other words, the medium transporting path  21  in the embodiment is provided with the switching-back path  24  along the face-down discharge path  28 , and is provided so that the reversing path  26  which is connected to the switching-back path  24  moves around the circumference of the recording portion  18 . For this reason, it is possible to respectively transport three media P at the same time in the medium transporting path  21 , and to perform recording in order. Therefore, it is possible to improve the number of media on which recording process is performed per unit time. In other words, it is possible to improve throughput in the printer  10 . 
     In summarizing the description above, the printer  10  in the embodiment includes: the straight path  22  which is a transporting path that transports the medium P, passes through the recording portion  18  that performs recording on the medium P, and extends to the upstream side and the downstream side of the recording portion  18 ; the switching-back path  24  which is a transporting path that is connected to the straight path  22 , and switches back and transports the medium P in the direction reverse to the sending direction, after sending the medium P that passes through the recording portion  18 ; the reversing path  26  which is a transporting path that is connected to the switching-back path  24 , and allows the medium P transported in the reverse direction to bypass the upper side of the recording portion  18 , to be reversed, and to be converged at the upstream side position of the recording portion  18  in the straight path  22 ; and the face-down discharge path  28  which is a transporting path that is connected to the straight path  22 , and bends, reverses, and discharges the medium P which passes through the recording portion  18 . The switching-back path  24  is formed along the face-down discharge path  28 . 
     In other words, after the medium P which passes through the recording portion  18  is sent, the switching-back path  24  which switches back and transports the medium P in the direction reverse to the sending direction is formed along the face-down discharge path  28  which bends, reverses, and discharges the medium P which passes through the recording portion  18 . For this reason, the switching-back path  24  and the face-down discharge path  28  do not occupy a region individually and independently in the printer  10 , and it is possible to further reduce a size of the apparatus. 
     In addition, the switching-back path  24  and the face-down discharge path  28  in the embodiment are positioned on the reversing path  26  side with respect to the straight path  22 . 
     Here, in summarizing the description regarding a positional relationship of the straight path  22 , the switching-back path  24 , the reversing path  26 , and the face-down discharge path  28 , the switching-back path  24  and the face-down discharge path  28  are positioned on the reversing path  26  side with respect to the straight path  22  in the apparatus height direction. Therefore, the switching-back path  24 , the reversing path  26 , and the face-down discharge path  28  use at least a part of the same region in the apparatus height direction in the printer  10 , and thus, it is possible to more efficiently increase the dimension in the apparatus height direction. 
     In addition, in the embodiment, as illustrated in  FIG. 2 , in the occupied region of the face-down discharge path  28  in the height direction, the switching-back path  24  and the face-down discharge path  28  are fitted. 
     In other words, the switching-back path  24  and the reversing path  26  do not independently occupy the region in the apparatus height direction, and it is possible to further reduce the size of the apparatus. 
     In addition, the switching-back path  24  in the embodiment is disposed on the inner side of the face-down discharge path  28 . 
     As a result, a path toward the reversing path  26  from the switching-back path  24  and a path toward the face-down discharge path  28  from the straight path  22  do not intersect each other, and it is possible to improve a degree of freedom of control when recording, and further, to improve throughput. 
     The printer  10  in the embodiment is provided with the medium receiving tray  20  which receives the medium P discharged from the face-down discharge path  28 , above the recording portion  18 . The medium receiving tray  20  obtains the upwardly inclined posture, which is an upward posture toward a side far from the outlet  28   a  of the face-down discharge path  28 . In addition, the reversing path  26  is reversed after being inclined upwardly along the upwardly inclined posture of the medium receiving tray  20 , and is converged with the straight path  22 . 
     As a result, it is possible to reduce a curvature of the reversed part in the reversing path  26 , and to smoothly reverse the medium without applying a force. 
     In addition, the switching-back path  24  in the embodiment is bent by considering the first surface which faces the recording head  48  which constitutes the recording portion  18  in the medium P that passes through the straight path  22  as the inner side. 
     Here, when recording is performed on both surfaces (the first surface and the second surface) of the medium P, since the recording portion  18  has a configuration in which recording is performed by ejecting the ink as “liquid” onto the medium P, the medium P onto which the ink is ejected tends to be bent by considering a surface (recording surface) onto which the ink is ejected as the outer side (curl tendency). If the medium P is reversed in this manner, and is sent to the recording portion  18  again, since the medium P is bent by considering the surface which faces the recording head  48  as the inner side, the tip end or the rear end of the medium P is likely to be in contact with the recording head  48 , that is, a so-called head scratch is likely to be generated. 
     However, in the embodiment, since the switching-back path  24  is bent by considering the first surface (that is, a surface on which recording is already performed) which faces the recording head  48  which constitutes the recording portion  18  in the medium P that passes through the straight path  22  as the inner side, that is, the switching-back path  24  is bent in a direction in which the curl tendency is corrected, it is possible to prevent or suppress the head scratch. 
     Regarding Configuration for Paper Jam Process in Apparatus Main Body 
     Next, a configuration for processing a paper jam of the medium P which is generated in the transporting path in the apparatus main body  12  will be described with reference to  FIGS. 2, 5 to 13, and 20 . 
     Jam Processing in Feeding Path and Reversing Portion  26   b    
     With reference to  FIG. 20 , one dot chain line portion which is given a reference numeral  92  illustrates an opening/closing unit which can be opened and closed with respect to the apparatus main body. Furthermore, in  FIG. 20 , a state where the opening/closing unit  92  is moved in a horizontal direction from the medium transporting path  21  for the description is illustrated. The opening/closing unit  92  can obtain a state of being closed with respect to the apparatus main body  12  illustrated in  FIG. 1 , and a state of being opened with respect to the apparatus main body  12  illustrated in  FIG. 5 . The opening/closing unit  92  has a rotation fulcrum (not illustrated) at the end portion on a +X axis direction side. The opening/closing unit  92  is configured to be rotatable with respect to the apparatus main body  12  by considering the rotation fulcrum as a center (refer to  FIGS. 1 and 5 ). 
     The opening/closing unit  92  is provided with the manual tray  90  which can be opened and closed with respect to the opening/closing unit  92 . Furthermore, when the opening/closing unit  92  is closed with respect to the apparatus main body  12 , the opening/closing unit  92  forms a path from the first transporting roller pair  34  in the feeding path  30  to a position at which the opening/closing unit  92  and the manual feeding path  88  are converged, and a part of the reversing portion  26   b  of the reversing path  26 . In addition, the opening/closing unit  92  is provided with one roller of the fourteenth transporting roller pair  74 , that is, the roller  74   a  which can be rotated in a driven manner. 
     Therefore, as illustrated in  FIGS. 5 and 20 , when the opening/closing unit  92  is in a state of being opened with respect to the apparatus main body  12 , the path from the first transporting roller pair  34  in the feeding path  30  to the position at which the opening/closing unit  92  and the manual feeding path  88  are converged and a part of the reversing portion  26   b  of the reversing path  26 , are exposed toward the outer side of the apparatus main body  12 . At this time, as illustrated in  FIG. 20 , one roller  34   a  and the other roller  34   b  of the first transporting roller pair  34  are separated from each other, and a nipped state in the first transporting roller pair  34  is released. Therefore, it is possible to easily remove the jammed medium P in the feeding path  30 . Therefore, it is possible to more easily perform jam processing. 
     Similarly, since one roller  74   a  and the other roller  74   b  of the fourteenth transporting roller pair  74  are separated from each other, the nipped state in the fourteenth transporting roller pair  74  is released. Therefore, it is possible to easily remove the jammed medium P in the reversing portion  26   b  of the reversing path  26 . Therefore, it is possible to more easily perform the jam processing. 
     Jam Processing in Upper Portion Section  26   a  in Reversing Path  26   
     Next, the upper side member  78  will be described with reference to  FIGS. 6, 7, and 21 . A state of the upper side member  78  can be changed from a state (refer to  FIG. 6 ) of being closed with respect to the apparatus main body  12  by considering the rotation fulcrum  80  (refer to  FIG. 21 ) provided at the +Y axis direction side end portion as a fulcrum to a state (refer to  FIG. 7 ) of being opened with respect to the apparatus main body  12  by being rotated to an upper side (+Z axis direction side). 
     When the state of the upper side member  78  is a state (refer to  FIG. 21 ) of being opened with respect to the apparatus main body  12 , the upper portion section  26   a  of the reversing path  26  is opened. In other words, the upper portion section  26   a  of the reversing path  26  is in a state of being exposed toward the outer side of the apparatus main body  12 . In addition, one roller  70   a  (spur) and the other roller  70   b  of the twelfth transporting roller pair  70  which is disposed in the upper portion section  26   a  are respectively separated from each other, and a nipped state in the twelfth transporting roller pair  70  is released. Similarly, one roller  72   a  (spur) and the other roller  72   b  of the thirteenth transporting roller pair  72  disposed in the upper portion section  26   a  are respectively separated from each other, and a nipped state of the thirteenth transporting roller pair  72  is released. 
     In addition, since the spurs  76 ,  76   a , and  76   b  which are disposed in the upper portion section  26   a  are provided in the upper side member  78 , when the upper side member  78  is rotated, rollers which remain in the upper portion section  26   a  are only the other roller  70   b  (rubber roller) of the twelfth transporting roller pair  70  which supports the lower side of the medium P in the apparatus height direction and the other roller  72   b  (rubber roller) of the thirteenth transporting roller pair  72 . Therefore, since there is no member which blocks the upper part of the upper portion section  26   a , it is possible to easily perform the jam processing of the medium P. 
     In summarizing the description above, the printer  10  in the embodiment includes: the straight path  22  which is a transporting path that transports the medium P, passes through the recording portion  18  that performs recording on the medium P, and extends to the upstream side and the downstream side of the recording portion  18 ; the switching-back path  24  which is a transporting path that is connected to the straight path  22 , and switches back and transports the medium P in the direction reverse to the sending direction, after sending the medium P that passes through the recording portion  18 ; the reversing path  26  which is a transporting path that is connected to the switching-back path  24 , and allows the medium P transported in the reverse direction to bypass the upper side of the recording portion  18 , to be reversed, and to be converged at the upstream side position of the recording portion  18  in the straight path  22 ; and the upper side member  78  which is a path forming member that forms the upper portion section  26   a  of the recording portion  18  in the reversing path  26 , is positioned on the upper side of the upper portion section  26   a , and can open the upper portion section  26   a.    
     The reversing path  26  in the embodiment is configured as a path which allows the medium P to bypass the upper side of the recording portion  18 , to be reversed, and to be converged at a position on the upstream side of the recording portion  18  in the straight path  22 . In other words, the reversing path  26  is positioned above the recording portion  18 . Since the upper portion section  26   a  of the recording portion  18  is formed by the upper side member  78  which can open the upper portion section  26   a , by opening the upper side member  78 , without moving the recording portion  18 , or without being interrupted by the recording portion  18 , it is possible to easily perform the jam processing operation of removing the jammed medium in the upper portion section  26   a.    
     The upper portion section  26   a  is provided with the twelfth transporting roller pair  70  which nips and transports the medium P. As one roller  70   a  which constitutes the twelfth transporting roller pair  70  is provided in the upper side member  78 , and the upper side member  78  is opened, one roller  70   a  which constitutes the twelfth transporting roller pair  70  is separated from the other roller  70   b . Similarly, the upper portion section  26   a  is also provided with the thirteenth transporting roller pair  72  which nips and transports the medium P. As one roller  72   a  which constitutes the thirteenth transporting roller pair  72  is provided in the upper side member  78 , and the upper side member  78  is opened, one roller  72   a  which constitutes the thirteenth transporting roller pair  72  is separated from the other roller  72   b.    
     As a result, the nipped state of the medium P by one roller  70   a  and the other roller  70   b  of the twelfth transporting roller pair  70  is released. In addition, the nipped state of the medium P by one roller  72   a  and the other roller  72   b  of the thirteenth transporting roller pair  72  is also released. According to this, it is possible to more easily remove the jammed medium P. 
     In the embodiment, one roller  70   a  of the twelfth transporting roller pair  70  which is provided in the upper side member  78  is a roller which can be rotated in a driven manner, and the other roller  70   b  is a roller which can be driven to be rotated by the driving source. In addition, similarly, one roller  72   a  of the thirteenth transporting roller pair  72  which is provided in the upper side member  78  is also a roller which can be rotated in a driven manner, and the other roller  72   b  is a roller which is driven to be rotated by the driving source. 
     Therefore, since one roller  70   a  of the twelfth transporting roller pair  70  and one roller  72   a  of the thirteenth transporting roller pair  72  which are provided in the upper side member  78  are respectively the rollers which can be rotated in a driven manner, it is not required that a power transmission mechanism be provided in the upper side member  78 , and thus, it is possible to avoid an increase in weight of the upper side member  78 , and to easily open and close the upper side member  78  with a small amount of power. 
     One roller  70   a  of the twelfth transporting roller pair  70  and one roller  72   a  of the thirteenth transporting roller pair  72  which are provided in the upper side member  78  are serrated rollers (spurs) which have the plurality of teeth on the outer circumference, and the serrated rollers are in contact with the one surface of the medium P on which recording is already performed. 
     In other words, one roller  70   a  of the twelfth transporting roller pair  70  and one roller  72   a  of the thirteenth transporting roller pair  72  which are provided in the upper side member  78  are spurs (serrated rollers) which have the plurality of teeth on the outer circumference. Since the spurs are in contact with the one surface of the medium on which recording is already performed, it is possible to control transfer to or white spots on the recording surface. 
     The printer  10  includes: the medium receiving tray  20  which is positioned above the upper portion section  26   a  and receives the discharged medium P; and the face-down discharge path  28  which is a transporting path that is connected to the straight path  22 , and transports the medium that passes through the recording portion  18  to the medium receiving tray  20 . The medium receiving tray  20  is configured to be integrated with the upper side member  78 , and can be opened and closed. 
     Therefore, as the medium receiving tray  20  in which a large opening/closing region is ensured and the upper side member  78  are configured to be integrated with each other, it is possible to more easily perform the jam processing operation in a state where the upper side member  78  is opened. 
     The medium receiving tray  20  obtains the upwardly inclined posture which is an upward posture toward a side far from the outlet  28   a  of the face-down discharge path  28  in a state of being closed, and can be opened and closed according to the rotational movement of the medium receiving tray  20 . At the same time, the rotation fulcrum  80  when moving rotationally is positioned on the upstream side of the medium receiving tray  20 . 
     Therefore, it is possible to ensure a large rotational movement range of the medium receiving tray  20  and the upper side member  78 , and to open the upper side member  78  and more easily perform the jam processing operation. 
     Jam Processing in Switching-Back Path and Face-Down Discharge Path 
     As illustrated in  FIG. 22 , a two dot chain line portion which is given a reference numeral  94  in  FIG. 22  illustrates a unit body which can obtain a first state where the medium transporting path  21  is formed with respect to the apparatus main body  12  and a second state where the medium transporting path  21  is opened. Furthermore, only the spurs which are related to the unit body  94  among the plurality of spurs provided in the medium transporting path  21  in  FIG. 22  are given reference numerals, and reference numerals of other spurs are omitted. 
     The unit body  94  includes a path from the downstream side of the fourth transporting roller pair  42  in the straight path  22  to the first flap  46  and the second flap  50 , and a path from the second flap  50  in the switching-back path  24  to the middle of the bent and reversed part via the eleventh transporting roller pair  66 . Furthermore, the unit body  94  includes a path from the first flap  46  in the face-down discharge path  28  via the fifth transporting roller pair  52 , the sixth transporting roller pair  54 , the seventh transporting roller pair  56 , and the eighth transporting roller pair  58 , from the eighth transporting roller pair  58  to the middle of the path toward the ninth transporting roller pair  60 . 
     The unit body  94  is configured to be movable in the Y axis direction, with respect to a structure body  96  which constitutes the medium transporting path  21  in the apparatus main body  12  as illustrated in  FIG. 8 . In the embodiment, the unit body  94  is configured to be able to be taken in and out from the structure body  96  by one pair of rail members  98  which is provided in the structure body  96 . 
     Next, as illustrated in  FIG. 9 , a lever  100  is provided in an upper portion of the unit body  94 . The lever  100  is configured to be able to be engaged with a lock mechanism which is not illustrated and provided in the apparatus main body  12 . In a state (refer to  FIG. 9 ) where the unit body  94  is closed with respect to the apparatus main body  12 , that is, the first state where the unit body  94  forms the medium transporting path  21 , the lever  100  is in a state of being engaged with the lock mechanism. According to this, the unit body  94  is in a state where the movement of the unit body  94  with respect to the apparatus main body  12  is limited. 
     Next, in a case of a configuration in which the engaged state between the lever  100  and the lock mechanism is released, for example, by lifting up the lever  100 , it is possible to release the locked state by lifting up the lever  100 , and to draw out the unit body  94  with respect to the apparatus main body  12  by pulling the lever  100 . In other words, in a state where the engagement between the lever  100  and the lock mechanism is released, if the lever  100  is pulled to the +Y axis direction side of  FIGS. 9 and 10 , the unit body  94  is in a state of being drawn out from the apparatus main body  12  as illustrated in  FIG. 10 , that is, the second state where the medium transporting path  21  is opened. 
     As illustrated in  FIG. 22 , if the unit body  94  is in a state (second state) of being drawn out with respect to the apparatus main body  12 , a part of the straight path  22 , a part of the switching-back path  24 , and a part of the face-down discharge path  28  are exposed toward the outer side of the apparatus main body  12 . In particular, when a paper jam is generated in the switching-back path  24  and the face-down discharge path  28 , it is possible to visually confirm the switching-back path  24  and the face-down discharge path  28 , and to more easily perform the jam processing operation in these paths. 
     In addition, an opening/closing cover  102  (refer to  FIG. 9 ) is provided in the unit body  94  to be rotatable with respect to the unit body  94 . If the opening/closing cover  102  is in a state (not illustrated) of being opened with respect to the unit body  94 , it is possible to expose the face-up discharge tray  86  which is provided in the unit body  94  toward the outer side of the apparatus main body  12 , and to take out the medium P discharged to the face-up discharge tray  86  from the apparatus main body  12 . 
     Jam Processing in Straight Path 
     Next, with reference to  FIGS. 8, 11 to 14, and 22 , the jam processing in the straight path  22  and in the transporting path in the vicinity thereof will be described. 
     As illustrated in  FIG. 8 , a frame  104  stands on the apparatus front surface side in the depth direction of the recording apparatus which is a direction that intersects the transporting direction of the medium in the structure body  96 . The frame  104  is a frame which makes a frame of the structure body  96 . In the frame  104 , an opening  106  is formed. The opening  106  is formed at a position which corresponds to the fourth transporting roller pair  42 , the fifth transporting roller pair  52 , the sixth transporting roller pair  54 , the eleventh transporting roller pair  66 , the first flap  46 , and the second flap  50  as illustrated in  FIG. 14 , in the first state of the unit body  94  in the frame  104  with respect to the structure body  96 , that is, a state where the unit body  94  constitutes the medium transporting path  21 . Furthermore, a two dot chain line portion which is given a reference numeral  106  in  FIGS. 14 and 22  illustrates the opening. 
     In the second state of the unit body  94  with respect to the structure body  96  as illustrated in  FIGS. 8 and 22 , that is, a state where the unit body  94  is drawn out from the structure body  96  and opens the medium transporting path  21 , a user can access a part of the recording portion  18  or the straight path  22  in the medium transporting path  21 , for example, the fourth transporting roller pair  42  and the periphery thereof from a side of the medium transporting path  21 , that is, the apparatus front surface side, via the opening  106 . In addition, it is also possible to access an inlet of the switching-back path  24  or the face-down discharge path  28 . 
     Here, if a case where the opening  106  is not provided in the frame  104  is considered, in order to access the straight path  22  which is at an innermost position in the structure body  96 , for example, the fourth transporting roller pair  42  or the periphery thereof, access from the unit body  94  side which is drawn out from the structure body  96  is required. As a result, as an access distance to the vicinity of the straight path  22  or the recording portion  18  from the unit body  94  side becomes long, and it is difficult to visually confirm a state of paper jam, an operability of the jam processing operation extremely deteriorates. 
     In the embodiment, as the opening  106  is provided at a position which corresponds to the fourth transporting roller pair  42 , the fifth transporting roller pair  52 , the sixth transporting roller pair  54 , the eleventh transporting roller pair  66 , the first flap  46 , and the second flap  50  in the medium transporting path  21  in the frame  104 , that is, on the medium transporting path  21  side, in a state where the unit body  94  is drawn out from the structure body  96 , that is, the second state, it is possible to access and to easily and visually confirm the recording portion  18  which is at the innermost position in the apparatus main body  12 , the straight path  22 , and further, the inlet of the switching-back path  24  or the face-down discharge path  28 . 
     Furthermore, the jam processing operation in the periphery of the recording portion  18  and the straight path  22  in the opening  106  will be described in detail. As illustrated in  FIGS. 9 and 11 , at the position which corresponds to the structure body  96  in the apparatus height direction in the apparatus main body  12 , that is, on the apparatus front surface side (−X axis direction side) of the frame  104 , a front surface cover  108  which can be moved rotationally with respect to the apparatus main body  12  by considering the lower end portion as the rotation fulcrum is provided. By moving the front surface cover  108  rotationally with respect to the apparatus main body  12 , the opening  106  is exposed toward the outer side of the apparatus main body  12 . 
     In this state, the unit body  94  is accommodated in the structure body  96 , and a part of the unit body  94  forms the medium transporting path  21 . For this reason, the user cannot input a hand into the opening  106 , and it is not possible to visually confirm the straight path  22  at the downstream side part of the recording portion  18  in the medium transporting path  21 . 
     Next, with reference to  FIGS. 12 and 13 , when the lever  100  is operated, the locked state of the unit body  94  with respect to the apparatus main body  12  is released, and the unit body  94  is drawn out from the apparatus main body  12 , a part of the unit body  94  which blocks the opening  106  moves in the +Y axis direction. As a result, the straight path  22  which is at the innermost position in the apparatus main body  12  on the inner side of the opening  106 , for example, the fourth transporting roller pair  42  and the vicinity thereof which are positioned on the downstream side of the recording portion  18 , are visually confirmed. Then, the user can input the hand into the medium transporting path  21  via the opening  106 , and the jam processing can be performed. 
     Furthermore, when the unit body  94  is drawn out from the structure body  96 , one roller (a roller which can be rotated in a driven manner)  42   a  in the fourth transporting roller pair  42  is separated from the other roller (driving roller)  42   b  by the interlocking mechanism which is not illustrated, and the nipped state in the fourth transporting roller pair  42  is released. According to this, it is possible to easily perform processing of the jam (paper jam) which is generated in the recording portion  18 . 
     In summarizing the description above, the printer  10  in the embodiment includes: the recording portion  18  which performs recording on the medium P; the medium transporting path  21  which transports the medium P; and the frame  104  which stands in the apparatus depth direction which is the direction that intersects the transporting direction of the medium with respect to the medium transporting path  21 , and forms the opening  106  which can access the medium transporting path  21 . 
     In other words, in the embodiment, via the opening  106 , it is possible to access the medium transporting path  21  from the side (−X axis direction side). Accordingly, even when the jam is generated at the innermost position of the apparatus, it is possible to provide access from a location near to a jam generation position, and to easily perform the jam processing operation. 
     The transporting direction of the medium P in the embodiment is the apparatus width direction in the printer  10 , and the frame  104  stands on the apparatus front surface side. 
     Therefore, as the opening  106  is positioned on the apparatus front surface side in the embodiment, according to this, it is possible to more easily perform the jam processing operation. 
     The printer  10  in the embodiment is provided with the unit body  94  which obtains the first state in which the medium transporting path  21  is formed and the second state in which the medium transporting path  21  is opened, in the frame  104 , that is, the structure body  96 . As the unit body  94  is in the second state, a part of the medium transporting path  21  is exposed to the inner side of the opening  106 . 
     As a result, the medium transporting path  21  is more greatly exposed to the inner side of the opening  106 , and accordingly, it is possible to more easily perform the jam processing operation. 
     The printer  10  in the embodiment is provided with the fourth transporting roller pair  42  which nips and transports the medium P to the inner side of the opening  106 . In addition, as the unit body  94  is in the second state, one roller  42   a  which constitutes the fourth transporting roller pair  42  is separated from the other roller  42   b . In addition, the fourth transporting roller pair  42  is a roller pair which is initially positioned at the downstream of the recording portion  18 . 
     Then, as the unit body  94  is in a state of being extracted with respect to the apparatus main body  12 , one roller  42   a  which constitutes the fourth transporting roller pair  42  is separated from the other roller  42   b . For this reason, restriction of the medium P in the fourth transporting roller pair  42  is released, and accordingly, it is possible to more easily perform the jam processing operation. 
     Modification Example of Embodiment 
     (1) The opening  106  in the embodiment is configured to be provided on the side of the position which corresponds to the fourth transporting roller pair  42 , the fifth transporting roller pair  52 , the sixth transporting roller pair  54 , the eleventh transporting roller pair  66 , the first flap  46 , and the second flap  50  in the medium transporting path  21 . However, instead of this configuration, the opening  106  may be provided at a position which corresponds to other configurations of the medium transporting path  21 . 
     (2) In the embodiment, a configuration in which it is possible to access the inside of the opening  106  by moving the unit body  94  with respect to the apparatus main body  12  in a sliding manner is employed. However, instead of this configuration, a configuration in which it is possible to access the inside of the opening  106  without moving the unit body  94  with respect to the apparatus main body  12  in a sliding manner may be employed. 
     (3) In the embodiment, a configuration in which the opening  106  is provided in the frame  104  which is provided on the apparatus front side when the transporting direction of the medium P is the apparatus width direction is employed. However, instead of this configuration, a configuration in which the opening  106  is provided on the side surface of the apparatus when the transporting direction of the medium P is the apparatus depth direction may be employed. In other words, a configuration in which the opening  106  is provided to be able to be accessed from the direction which intersects the transporting direction of the medium in the medium transporting path  21  may be employed. 
     In addition, in the embodiment, the straight path  22 , the switching-back path  24 , the reversing path  26 , and the face-down discharge path  28  according to the invention are employed in an ink jet printer which is an example of the recording apparatus. However, it is possible to generally employ other liquid ejecting apparatuses. 
     Here, the liquid ejecting apparatus is not limited to the recording apparatus, such as a printer, a copying machine, or a facsimile, which uses an ink jet type recording head, ejects the ink from the recording head, and performs recording on the recording medium. The liquid ejecting apparatus includes an apparatus which ejects the liquid corresponding to the purpose instead of the ink to the ejecting medium which corresponds to the recording medium from the liquid ejecting head which corresponds to the ink jet type recording head, and attach the liquid to the ejecting medium. 
     Other than the recording head, examples of the liquid ejecting head include a color material ejecting head which is used in manufacturing a color filter, such as a liquid crystal display, an electrode material (conductive paste) ejecting head which is used in forming an electrode, such as an organic EL display or a field emission display (FED), a living body organic matter ejecting head which is used in manufacturing a bio chip, a sample ejecting head as a precision pipette, or the like. 
     Furthermore, the invention is not limited to the above-described embodiment, and it goes without saying that various modifications are possible within a scope of the invention described in the range of the patent claims, and these modifications are included in the scope of the invention. 
     The entire disclosure of Japanese Patent Application No. 2014-065646, filed Mar. 27, 2014 is expressly incorporated by reference herein.