Patent Publication Number: US-9415616-B2

Title: Recording apparatus

Description:
BACKGROUND 
     1. Technical Field 
     The present invention relates to a recording apparatus which is represented by a fax machine, a printer, or the like. 
     2. Related Art 
     In a recording apparatus which is represented by a fax machine, a printer, or the like, an apparatus which includes a battery, is small and light in weight, and with portability has appeared on the market. Printers which are disclosed in Japanese Patent No. 3,600,173, and Japanese Patent No. 4,387,651 are examples thereof. 
     There also is a case in which a battery is built inside an apparatus main body, in addition to a configuration in which the battery is detachably provided in the apparatus main body. Meanwhile, since miniaturization of an apparatus is made in a mobile-type printer in which portability is taken into consideration, there is not much space in a housing. In addition, when taking portability into consideration, further miniaturizing is necessary in the market. For this reason, it is necessary to execute miniaturization using an optimal layout while considering a layout of a control substrate, and layout of electronic components, a motor, or the like. In addition, it is necessary to take into consideration a case in which a battery is not capable of exhibiting a desired performance due to being easily influenced by heat, and being out of a usage environment of the battery due to the heat. 
     SUMMARY 
     An advantage of some aspects of the invention is to provide a recording apparatus which can maintain a desirable performance by appropriately arranging a substrate and a battery, and appropriately arranging a motor, in addition to that. 
     According to a first aspect of the invention, there is provided a recording apparatus which includes a housing; a medium feeding unit which sends out a medium; a substrate which configures a control unit of the apparatus; and a battery accommodation unit which accommodates a battery which is a power source of the medium feeding unit and the control unit in the housing; in which the battery accommodation unit is arranged at a location separated from a place which faces the substrate, and at least a part of an arranging region of the battery accommodation unit, and at least a part of an arranging region of the substrate are in the same range in a height direction. 
     According to the aspect, since in the battery accommodation unit and the substrate, the battery accommodation unit is arranged at a location separated from a place which faces the substrate, there are no cases in which the battery directly receives heat radiated from the substrate, and it is possible to keep the battery in a good state. 
     In addition, since at least a part of the arranging region of the battery accommodation unit, and at least a part of the arranging region of the substrate are in the same range in the height direction, it is possible to reduce a dimension of the apparatus in the height direction. 
     In the recording apparatus, at least a part of the arranging region of the battery accommodation unit, and at least a part of the arranging region of the substrate may be in the same range in a depth direction of the apparatus. 
     According to the aspect, it is possible to reduce a dimension of the apparatus in the depth direction, since at least a part of the arranging region of the battery accommodation unit, and at least a part of the arranging region of the substrate are in the same range in the depth direction of the apparatus. 
     In the recording apparatus, at least a part of the battery accommodation unit may be put into a first notch portion which is formed on the substrate. 
     According to the aspect, it is possible to miniaturize the apparatus since at least a part of the battery accommodation unit is put into the first notch portion which is formed on the substrate. 
     In the recording apparatus, the battery accommodation unit may be provided at a center portion in a medium width direction which is a direction intersecting a medium feeding direction. 
     The recording apparatus may further include a medium support unit which supports a medium in an inclined state, and in which the battery accommodation unit may be provided on a rear side in an apparatus depth direction, in a space which is formed on a lower side in a state in which the medium support unit is inclined. 
     The recording apparatus may further include a plurality of substrates, in which a first substrate which configures the plurality of substrates may be provided in an erect posture on a rear side in the apparatus depth direction, and a second substrate which configures a plurality of the substrates may be formed in a posture intersecting the first substrate. 
     The recording apparatus may further include a first motor and a second motor which are driven by the battery, in which the first motor and the second motor may be provided on both sides of the battery accommodation unit in the medium width direction which is the direction intersecting the medium feeding direction. 
     According to the aspect, since the first motor and the second motor which are driven by the battery are provided, and the first motor and the second motor are provided on both sides of the battery accommodation unit in the medium width direction which is the direction intersecting the medium feeding direction, heavy goods in the recording apparatus do not incline to one portion, and portability of the apparatus is improved. 
     In the recording apparatus, at least one of the first motor and the second motor may be put into a second notch portion which is formed on the substrate. 
     According to the aspect, since at least one of the first motor and the second motor is put into the second notch portion which is formed on the substrate, it is possible to miniaturize the apparatus. 
     The recording apparatus may further include a medium returning member which returns a tip end of a medium which is sent out from the medium support unit to the medium support unit side, and an opening which is formed on a frame which forms the medium support unit, and exposes the medium returning member, in which the opening may also function as a heat radiating port from which heat generated from the substrate is emitted. 
     According to the aspect, since the opening which is formed on the frame which forms the medium support unit, and exposes the medium returning member also functions as the heat radiating port from which heat generated from the substrate is emitted, it is not necessary to separately provide the heat radiating port from which heat generated from the substrate is emitted, and it is possible to suppress increase in cost of the apparatus, and to emit heat generated from the substrate well. 
     In the recording apparatus, the battery accommodation unit may be formed integrally with the frame which forms the medium support unit. 
     According to the aspect, since the battery accommodation unit is formed integrally with the frame which forms the medium support unit, it is possible to reduce a cost of the apparatus. 
     In the recording apparatus, heat generated from the substrate may be emitted from the opening through a heat radiating member which is provided at a location facing the opening with respect to the substrate. 
     According to the aspect, since heat generated from the substrate may be emitted from the opening through the heat radiating member which is provided at the location facing the opening with respect to the substrate, it is possible to prevent dust, or the like, which enters from the opening from being attached to the substrate, and to maintain a performance of the substrate well. 
     The recording apparatus may further include a liquid ejecting head which ejects liquid with respect to a medium; a support member which is provided at a location in which it is possible to face the liquid ejecting head, and supports the medium; a first liquid holding unit which holds liquid ejected to a region which is separated from an end portion of the medium, and is guided from a higher part to a lower part of the support member; and a second liquid holding unit which holds liquid ejected as waste liquid from the liquid ejecting head, in which an occupying region of the second substrate may overlap an occupying region of the first liquid holding unit, and an occupying region of the second liquid holding unit in the apparatus height direction. 
     According to the aspect, since the occupying region of the second substrate overlaps the occupying region of the first liquid holding unit, and the occupying region of the second liquid holding unit in the apparatus height direction, it is possible to miniaturize the apparatus in a configuration including the first liquid holding unit and the second liquid holding unit. 
    
    
     
       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 a perspective view of the exterior of a printer according to an embodiment of the invention. 
         FIG. 2  is a perspective view in which the printer according to the embodiment of the invention is viewed from below. 
         FIG. 3  is a side cross-sectional view which illustrates a medium transport path in the printer according to the embodiment of the invention. 
         FIG. 4  is a perspective view in which an apparatus main body of the printer is viewed from below. 
         FIG. 5  is a perspective view which illustrates a state in which a shield plate of a substrate and a battery cover are detached in the apparatus main body which is illustrated in  FIG. 4 . 
         FIG. 6  is a perspective view which illustrates a positional relationship between a battery accommodation unit and a first substrate, and a second substrate in a medium support unit. 
         FIG. 7  is a plan view which illustrates a positional relationship between the first substrate and a battery on the rear surface of the apparatus main body. 
         FIG. 8  is a plan view which illustrates a positional relationship between the second substrate and the battery on the lower face of the apparatus main body. 
         FIG. 9  is a perspective view of the exterior of a medium support member which is viewed from above. 
         FIG. 10  is a perspective view of the medium support member which illustrates a state in which the battery is mounted on the medium support member. 
         FIG. 11  is a side cross-sectional view of the medium support member which illustrates a state in which the battery is mounted on the medium support member. 
         FIG. 12  is a perspective view of the medium support member which illustrates a state in which a battery cover is detached from the medium support member which is illustrated in  FIG. 10 . 
         FIG. 13A  is a perspective view of the exterior of the battery, and  FIG. 13B  is a perspective view of the exterior of the battery cover. 
         FIG. 14  is a cross-sectional view of a portion at which a medium returning lever is provided in the medium support member. 
     
    
    
     DESCRIPTION OF EXEMPLARY EMBODIMENTS 
     Hereinafter, embodiments of the invention will be described based on drawings. In addition, the same configurations in each embodiment will be given the same reference numerals, descriptions will be made only in the first embodiment, and descriptions of the configuration in an embodiment after the first embodiment will be omitted. 
       FIG. 1  is a perspective view of the exterior of a printer (hereinafter, referred to as printer  10 ) according to an embodiment of the invention,  FIG. 2  is a perspective view in which the printer  10  is viewed from below,  FIG. 3  is a side cross-sectional view which illustrates a medium transport path in the printer  10 ,  FIG. 4  is a perspective view in which an apparatus main body of the printer  10  is viewed from below, and  FIG. 5  is a perspective view which illustrates a state in which a shield plate of a substrate and a battery cover are detached in the apparatus main body which is illustrated in  FIG. 4 . 
       FIG. 6  is a perspective view which illustrates a positional relationship between a battery accommodation unit and a first substrate and a second substrate in a medium support unit,  FIG. 7  is a plan view which illustrates a positional relationship between the first substrate and a battery on the rear surface of the apparatus main body,  FIG. 8  is a plan view which illustrates a positional relationship between the second substrate and the battery on the lower face of the apparatus main body,  FIG. 9  is a perspective view of the exterior of a medium support member which is viewed from above, and  FIG. 10  is a perspective view of the medium support member which illustrates a state in which the battery is mounted on the medium support member. 
       FIG. 11  is a side cross-sectional view of the medium support member which illustrates a state in which the battery is mounted on the medium support member,  FIG. 12  is a perspective view of the medium support member which illustrates a state in which a battery cover is detached from the medium support member which is illustrated in  FIG. 10 ,  FIG. 13A  is a perspective view of the exterior of the battery,  FIG. 13B  is a perspective view of the exterior of the battery cover, and  FIG. 14  is a cross-sectional view of a portion at which a medium returning lever is provided in the medium support member. 
     In the XYZ coordinate system illustrated in each drawing, an X direction denotes a scanning direction of a recording head and the apparatus width direction, a Y direction denotes the depth direction and a sheet transport direction of the recording apparatus, and a Z direction denotes the apparatus height direction, and a direction in which an apparatus main body, an extension unit, and a supporting stand which will be described later overlap. In addition, in each drawing, a −Y direction is set to the front face side of the apparatus, and a +Y direction is set to the rear surface side of the apparatus. 
     Regarding Outline of Printer 
     The ink jet printer  10  (hereinafter, referred to as printer  10 ) as an example of the recording apparatus will be described with reference to  FIGS. 1 to 3 . The printer  10  includes an apparatus main body  12  (refer to  FIG. 4 ), a housing  14  which configures the exterior of the apparatus main body  12 , and a cover  16  which is opened or closed with respect to the apparatus main body  12 . 
     The cover  16  is rotatably attached to the apparatus main body  12 , and is brought into a closed state as illustrated in  FIG. 1 , and an open state by being rotated with respect to the apparatus main body  12  as illustrated in  FIG. 3 . In addition, only a part of the cover  16  is illustrated in  FIG. 3  for description. In addition, the cover  16  configures a part of a top face and the front face of the printer  10  in the closed state as illustrated in  FIG. 1 . 
     In addition, as illustrated in  FIG. 2 , a plurality of elastic members  18  are provided on the rear surface of the housing  14  of the printer  10 . The elastic member  18  functions as a support unit when placing the rear surface side of the printer  10  on a desk, a table, or the like, as a base portion. 
     Subsequently, constituent elements on a medium transport path in the printer  10  will be further described in detail with reference to  FIG. 3 . In  FIG. 3 , the right side on a paper face (rear surface side of apparatus) is the upstream side on a feeding path, and the left side on the paper face (front face side of apparatus) is the downstream side of the feeding path. In addition, a dot and dash line with a reference numeral  20  in  FIG. 3  denotes a transport path of a medium. In addition, the medium in the specification means a sheet such as plain paper, a picture, a postcard, or the like. 
     A medium supply unit  22  which can supply a medium in a state in which the cover  16  is open with respect to the housing  14  is provided on the upstream side on the feeding path. The medium supply unit  22  includes a medium support unit  24  which supports the medium in an inclined posture, a feeding roller  26  as a “medium feeding unit” which transports the medium which is supported by the medium support unit  24  to the downstream side of the medium transport path, and a medium returning lever  28 . 
     The medium support unit  24  is formed downward toward the −Y direction side in an inclined shape in  FIG. 3 . In addition, the medium support unit  24  includes a support member  30  (refer to  FIG. 9 ). The support member  30  is configured so as to oscillate in a direction of being close to or separated from the feeding roller  26 . 
     The feeding roller  26  comes into contact with a medium on the top which is mounted on the support member  30  when the support member  30  is displaced in a direction of being close to the feeding roller  26 , and feeds the medium on the top to the downstream side of the feeding path. At this time, mediums as the second sheet and thereafter are returned to the support member  30  using the medium returning lever  28 , and are prevented from being fed to the downstream side of the feeding path carelessly. In addition, the feeding roller  26  is rotatably driven by a feeding roller driving motor  32  (refer to  FIGS. 4 and 5 ) as a “first motor” which is provided inside the apparatus main body  12 . 
     A transport unit  34  is provided on the downstream side of the medium supply unit  22 . A pair of transport rollers  36  is provided in the transport unit  34 . The pair of transport rollers  36  is rotatably driven by a driving motor  38  (refer to  FIGS. 4 and 5 ) as a “second motor”. The transport unit  34  transports the medium which is fed from the medium supply unit  22  to the downstream side in the transport direction by nipping the medium using the pair of transport rollers  36 . A recording unit  40  is provided on the downstream side of the transport unit  34 . 
     The recording unit  40  includes a carriage  42 , a recording head  44  which is provided at a base portion of the carriage, and a platen  46  which faces the recording head, and supports a medium. The recording head  44  faces the medium which is supported by the platen  46 . The carriage  42  is driven so as to reciprocate in the X axis direction (front-rear direction of paper face) in  FIG. 3  using a carriage driving motor  48  (refer to  FIGS. 4 and 5 ) which is provided inside the apparatus main body  12 . In addition, the platen  46  defines a distance (gap) between a recording face of a medium and a head face of the recording head  44  by supporting the medium from below. 
     In the recording unit  40 , recording is performed when ink as “liquid” is ejected toward a medium from a plurality of nozzle holes (not illustrated) of the recording head  44 , and the ink lands on a recording face (face which faces recording head  44 ) of the medium, when the medium supported by the platen  46  faces the recording head  44 . 
     A discharging unit  50  is provided on the downstream side of the transport path of the recording unit  40 . The discharging unit  50  includes a pair of discharging rollers  52 . A medium which is subjected to recording in the recording unit  40  is discharged toward the front side of the apparatus from the front face of the apparatus by being nipped using the pair of discharging rollers  52 . In addition, the pair of discharging rollers  52  is rotatably driven by the driving motor  38  (refer to  FIGS. 4 and 5 ) through a plurality of toothed gears. 
     In addition, in the embodiment, the feeding roller driving motor  32  which rotatably drives the feeding roller  26 , the driving motor  38  which rotatably drives the pair of transport rollers  36 , and the pair of discharging rollers  52 , and the carriage driving motor  48  which moves the carriage  42  in the X axis direction are controlled by a control unit (refer to  FIGS. 5 and 6 ) as a “control unit” which will be described later. 
     Regarding Embodiments 
     Regarding Configuration of Apparatus Main Body  12   
     Subsequently, a configuration of the apparatus main body  12 , specifically, the medium support unit  24 , the feeding roller driving motor  32 , the driving motor  38 , the control unit  54 , and a battery accommodation unit  56  which will be described later will be described with reference to  FIGS. 4 to 8 . The medium support unit  24  is arranged at the rear surface side of the apparatus main body  12 , that is, at an end portion on the +Y direction side. 
     The battery accommodation unit  56  is provided on the lower side in the apparatus height direction, that is, on the −Z axis direction side, in the medium support unit  24  when referring to  FIG. 6 . In addition, the battery accommodation unit  56  is provided at a center portion in the X axis direction which is the width direction of the medium support unit  24 . In addition, the battery accommodation unit  56  is provided at an end portion on the +Y direction side in the Y axis direction which is the depth direction of the apparatus in the medium support unit  24 . 
     Here, when referring to  FIGS. 4 and 5 , the feeding roller driving motor  32  and the driving motor  38  are provided on the rear surface side of the apparatus main body  12 , that is, at an end portion of the medium support unit  24  on the +Y axis direction side. According to the embodiment, the feeding roller driving motor  32  is provided at an end portion of the apparatus main body  12  (medium support unit  24 ) on the −X axis direction side, and the driving motor  38  is provided at an end portion of the apparatus main body  12  (medium support unit  24 ) on the +X axis direction side. In addition, in  FIG. 6 , the driving motor  38  at an end portion on the +X axis direction side of the medium support unit  24  is not illustrated. 
     That is, the battery accommodation unit  56  is provided between the feeding roller driving motor  32  and the driving motor  38  in the X axis direction in the medium support unit  24  (refer to  FIGS. 4 to 6 ). 
     That is, according to the embodiment, the feeding roller driving motor  32  and the driving motor  38  are respectively provided on both sides of the battery accommodation unit  56  in the X axis direction which is the medium width direction intersecting the Y axis direction which is the medium feeding direction in the apparatus main body  12 . Accordingly, heavy goods in the printer  10  do not incline to one portion, and portability of the printer  10  is improved. 
     In addition, when referring to  FIGS. 4 and 5 , an ink absorbing body  55  as a “first liquid holding unit”, and a waste ink cartridge  57  as a “second liquid holding unit” are provided on the front side of the apparatus at the base portion of the apparatus main body  12 . The ink absorbing body  55 , and the waste ink cartridge  57  are provided at the lower part of the platen  46 , respectively. In addition, the ink absorbing body  55 , and the waste ink cartridge  57  are arranged in parallel with respect to the transport direction of the medium at the lower part of the platen  46 . 
     When performing borderless recording on a medium in the recording unit  40 , the ink absorbing body  55  is configured so as to hold ink which is ejected to a region separated from an end portion of the medium, and is guided from the higher part to the lower part of the platen  46 . Specifically, the ink absorbing body  55  is configured of a sponge material. 
     In addition, in the apparatus main body  12 , a cap unit  61  (refer to  FIGS. 4 and 5 ) is provided at an end portion on the −X axis direction side in a moving region of the carriage  42 . The cap unit  61  is connected to a pump  63 . The cap unit  61  engages with the recording head  44  when the recording head  44  is at a position facing the cap unit  61 , absorbs ink in the inside of the nozzle of the recording head  44  using the pump  63 , or receives ink which is discarded from the recording head  44  using a flushing operation. 
     The waste ink cartridge  57  is connected to the cap unit  61  through the pump  63 . The waste ink cartridge  57  accommodates waste ink which is discarded from the cap unit  61 , or waste ink which is suctioned using the pump  63 , and is sent out from the pump  63  in the cartridge. 
     The control unit  54  is configured of a plurality of substrates. According to the embodiment, the control unit  54  includes a first substrate  58  and a second substrate  60  (refer to  FIG. 5 ). As illustrated in  FIGS. 5 and 6 , the first substrate  58  and the second substrate  60  are arranged on the lower side of the medium support unit  24  in the medium support unit  24 , and are arranged so as to be close to the battery accommodation unit  56 . In addition, a plurality of electrical resistors, capacitors, and the like, are arranged, and an electrical circuit is formed in each substrate. 
     As illustrated in  FIG. 5 , the first substrate  58  is provided in an erect posture on the rear surface side of the apparatus main body  12 , that is, along the Z axis direction at an end portion on the +Y axis direction side, and is fixed to a part of the frame  66  which forms the medium support unit  24  (refer to  FIG. 6 ). In addition, the second substrate  60  is formed in a posture intersecting the first substrate  58  (refer to  FIG. 5 ). Specifically, the second substrate  60  is provided at a base portion of the apparatus main body  12 , and is provided in parallel to an XY plane which intersects the Z axis direction (refer to  FIG. 8 ). 
     In addition, as illustrated in  FIG. 4 , a shield plate  62  is attached to the first substrate  58 . In addition, a shield plate  64  is attached to the second substrate  60 , as well. The shield plates  62  and  64  according to the embodiment are formed of a conductive material, and reduce an influence of noise with respect to the first substrate  58  and the second substrate  60 . 
     As illustrated in  FIG. 7 , in the first substrate  58 , a notch portion  58   a  as a “first notch portion” is formed at an end portion on the −X axis direction side. The battery accommodation unit  56  is arranged in a state in which a part thereof is put into the notch portion  58   a  of the first substrate  58  in the X axis direction, on the rear surface side of the apparatus main body  12 . 
     In addition, at least a part of an arranging region of the battery accommodation unit  56  with respect to the apparatus main body  12  in the Z axis direction which is the apparatus height direction of the apparatus main body  12  is in the same range as those of the first substrate  58  and the second substrate  60 . Accordingly, since it is not necessary to arrange the battery accommodation unit  56 , and each of substrates  58  and  60  in a stacking manner in the apparatus height direction (Z axis direction), it is possible to make a dimension of the printer  10  in the apparatus height direction (Z axis direction) small, or to reduce the dimension. 
     In addition, as illustrated in  FIG. 8 , a notch portion  60   a  as a “first notch portion” is formed at an end portion on the −X axis direction side of the second substrate  60 . The battery accommodation unit  56  is arranged in a state in which a part thereof is put into the notch portion  60   a  of the second substrate  60  in the X axis direction at the base portion of the apparatus main body  12 . 
     In addition, as illustrated in  FIG. 5 , the second substrate  60  is provided at the base portion of the apparatus main body  12 , and also the ink absorbing body  55  and the waste ink cartridge  57  are provided at the base portion of the apparatus main body  12 . That is, an occupying region of the second substrate  60  in the apparatus height direction overlaps with occupying regions of the ink absorbing body  55  and the waste ink cartridge  57 . 
     Accordingly, it is possible to miniaturize the apparatus in a configuration of including the ink absorbing body  55  and the waste ink cartridge  57 . 
     In addition, at least a part of the arranging region of the battery accommodation unit  56  with respect to the apparatus main body  12  in the Y axis direction which is the apparatus depth direction in the apparatus main body  12  is in the same range as those of the first substrate  58  and the second substrate  60 . Accordingly, since it is not necessary to arrange the battery accommodation unit  56 , and each of substrates  58  and  60  in an overlapping manner in the apparatus depth direction (Y axis direction), it is possible to make a dimension of the printer  10  in the apparatus depth direction (Y axis direction) small, or to reduce the dimension. 
     In addition, in the battery accommodation unit  56 according to the embodiment, at least a part thereof is put into the first notch portion  58   a  which is formed on the first substrate  58 , and is put into a first notch portion  60   a  which is formed on the second substrate  60 . 
     Accordingly, with such a configuration, it is possible to miniaturize the apparatus. 
     In addition, when referring to  FIGS. 5 to 7 , the notch portion  58   b  as a “second notch portion” is formed at the end portion on the +X axis direction side of the first substrate  58 . In addition, when referring to  FIGS. 5, 6 , and  8 , the notch portion  60   b  as a “second notch portion” is formed at the end portion on the +X axis direction side of the second substrate  60 . According to the embodiment, the driving motor  38  which is illustrated in  FIG. 5  is arranged at a position corresponding to the notch portion  58   b  of the first substrate  58  and the notch portion  60   b  of the second substrate  60  at the end portion on the +X axis direction side of the apparatus main body  12  (medium support unit  24 ). 
     That is, according to the embodiment, the driving motor  38  is put into the second notch portion  58   b  which is formed on the first substrate  58 , and in put into the second notch portion  60   b  which is formed on the second substrate  60 . 
     Accordingly, with such a configuration, it is possible to miniaturize the apparatus. 
     Here, a positional relationship between the battery accommodation unit  56 , the first substrate  58  and the second substrate  60  will be summarized. A plurality of electronic components are attached to the first substrate  58  and the second substrate  60 , and an electrical circuit is formed. Heat emitted from the electronic components is radiated from a substrate face onto which the electronic components are attached in the first substrate  58  and the second substrate  60 , and is emitted to a region which faces the substrate face. Since the battery accommodation unit  56  is located to the side of the first substrate  58  in the X axis direction in  FIG. 7 , the battery accommodation unit does not face the substrate face of the first substrate  58 . Accordingly, the battery accommodation unit  56  is arranged so as to hardly receive the heat radiated from the first substrate  58  directly, in the inside of the apparatus main body  12 . 
     In addition, since the battery accommodation unit  56  is located to the side of the second substrate  60  in the X axis direction in  FIG. 8 , the battery accommodation unit does not face the substrate face of the second substrate  60 . Accordingly, the battery accommodation unit  56  is arranged so as to hardly receive the heat radiated from the second substrate  60  directly, in the inside of the apparatus main body  12 . 
     When summarizing the above descriptions, since the battery accommodation unit  56 , the first substrate  58 , and the second substrate  60  are arranged on the lower side of the medium support unit  24 , and the battery accommodation unit  56  is arranged at a position separated from a place which faces the first substrate  58  and the second substrate  60 , it is difficult for a battery  74  (refer to  FIG. 13A ) to directly receive heat radiated from the first substrate  58  and the second substrate  60 , and it is possible to keep the battery  74  in a good state. 
     Regarding Configuration of Medium Support Unit and Battery Accommodation Unit 
     In addition, configurations of the medium support unit  24  and the battery accommodation unit  56  will be described with reference to  FIGS. 9 to 13 . As illustrated in  FIG. 9 , the medium support unit  24  includes the frame  66 . The support member  30  is attached to the higher part of the frame  66 . The support member  30  is configured so as to oscillate with respect to the frame  66  about a pair of oscillating shafts  68  which is provided at the higher end of the support member  30 . 
     In addition, a feeding roller driving shaft  70  which extends in the X axis direction at a position facing the support member  30  is attached to the frame  66  so as to rotate with respect to the frame  66 . The feeding roller  26  is attached to the feeding roller driving shaft  70  so as to rotate integrally with the feeding roller driving shaft  70 . 
     In addition, in the frame  66 , a plurality of openings  72  are provided on the downstream side of the support member  30  on the medium transport path with appropriate intervals in the X axis direction. A medium returning lever  28  is provided in each opening  72 . The medium returning lever  28  is driven in an oscillating manner so as to proceed to, or retreat from the medium transport path using a driving mechanism (not illustrated) which receives a driving power from the feeding roller driving motor  32 . In addition, when the medium returning lever  28  proceeds to the medium transport path, at least a part of the medium returning lever  28  protrudes to the medium transport path side from the opening  72 , and is exposed from the opening  72 . 
     As illustrated in  FIGS. 10 to 12 , the battery accommodation unit  56  is provided at the lower part of the frame  66 . More specifically, as illustrated in  FIG. 11 , the frame  66  is formed downward toward the −Y direction side in an inclined shape, and the support member  30  is provided on the inclined face (refer to  FIG. 3 ). In addition, the support member  30  is not illustrated in  FIG. 11 . 
     Since the medium support unit  24  supports a sheet in an inclined posture, a space (dead space) is formed on the lower side thereof. The battery accommodation unit  56  is arranged using the space. More specifically, the battery accommodation unit  56  is formed integrally with the frame  66  at a center portion of the frame  66  in the X axis direction in the space. That is, since the battery accommodation unit  56  is formed integrally with the frame  66  which forms the medium support unit  24 , it is possible to reduce a cost of the printer  10 . 
     The battery accommodation unit  56  is formed in a box shape as illustrated in  FIGS. 10 to 12 , and is open in the −Z axis direction. The battery  74  is detachably inserted into the battery accommodation unit  56 . As illustrated in  FIG. 10 , a battery accommodation unit cover  76  is detachably attached to an opening of the battery accommodation unit  56  in the −Z axis direction. 
     The battery  74  is formed so as to extend in the X axis direction, as illustrated in  FIG. 13A . In addition, terminals are respectively provided on both end portions of the battery  74  in the X axis direction, though the terminals are not illustrated in  FIG. 13A . Both these terminals are electrically connected to each of substrates  58  and  60 , the feeding roller driving motor  32 , the driving motor  38 , and the carriage driving motor  48  of the control unit  54 , and supply power for driving these members. 
     In addition, the battery accommodation unit cover  76  is formed in a box shape, and is open on the +Z axis direction side, as illustrated in  FIG. 13B . The battery accommodation unit cover  76  is attached to the battery accommodation unit  56  using a fastening member such as a screw, or the like, which is not illustrated. In addition, when attaching the battery accommodation unit cover  76  to the battery accommodation unit  56  by accommodating the battery  74  in the battery accommodation unit  56 , an elastic member  78  (refer to  FIG. 11 ) is attached between the battery  74  and the battery accommodation unit cover  76 . 
     In the embodiment, the elastic member  78  is configured of a sponge material. The elastic member  78  biases the battery  74  in the +Z axis direction in the battery accommodation unit  56  using an elastic force thereof, and holds the battery at a predetermined position in the battery accommodation unit  56 , when the battery  74  is accommodated in the battery accommodation unit  56 , and the battery accommodation unit cover  76  is attached to the battery accommodation unit  56 . 
     In addition, a plurality of engaging units  76   a  which protrude to the +Z axis direction side are provided at an end portion on the +Y axis direction side of the battery accommodation unit cover  76 . When the battery accommodation unit cover  76  is attached to the battery accommodation unit  56 , the engaging units  76   a  engage with a plurality of hooks  56   a  which are provided at the end portion on the Y axis direction side of the battery accommodation unit  56 , respectively. 
     In addition, as illustrated in  FIG. 11 , when the battery accommodation unit cover  76  is attached to the battery accommodation unit  56 , an elastic member  80  is arranged between the engaging unit  76   a  and the end portion on the +Y axis direction side of the battery accommodation unit  56 . The elastic member  80  is also configured of a sponge material. The elastic member  80  prevents the battery accommodation unit cover  76  from deviating from the battery accommodation unit  56  in the Y axis direction in  FIG. 11 . 
     Regarding a Relationship Between Medium Support Unit and Second Substrate 
     Subsequently, a relationship between the frame  66  and the second substrate  60  in the medium support unit  24  will be described with reference to  FIGS. 6, 9, 12, and 14 . As described above, the plurality of openings  72  (refer to  FIG. 9 ) which accommodate the medium returning levers  28  are provided in the frame  66 . A space  82  (refer to  FIG. 14 ) is formed on the −Z axis direction side of the opening  72  in the frame  66 . The space  82  accommodates at least a part of the medium returning lever  28 , as illustrated in  FIG. 14 . 
     In addition, as illustrated in  FIG. 14 , the second substrate  60  is arranged on the lower part of the frame  66 . The second substrate  60  extends along the XY plane on the lower part of the frame  66 . In addition, at least a part of the second substrate  60  faces the space  82 . 
     Here, a heat radiating member  84  is provided between the second substrate  60  and an end portion on the −Z axis direction side of the space  82 . That is, the heat radiating member  84  is provided at a position facing the opening  72  with respect to the second substrate  60 . The heat radiating member  84  is configured of a material with high heat conductivity, as an example. 
     Here, a plurality of electrical resistors, capacitors, or the like, are provided in the second substrate  60 , and when the control unit  54  is electrically connected, these members radiate heat. Heat which is radiated from the second substrate  60  is transmitted to the space  82  through the heat radiating member  84 , and is emitted from the space  82  through the opening  72 . 
     That is, according to the embodiment, since the opening  72  which is formed in the frame  66  which forms the medium support unit  24 , and exposes the medium returning lever  28  also functions as a heat radiating port which emits heat generated from the second substrate  60 , it is not necessary to provide a separate heat radiating port which emits heat generated from the second substrate  60 , it is possible to reduce a cost of the apparatus, and to emit heat which is generated from the second substrate  60  well. 
     In addition, according to the embodiment, since the heat radiating member  84  partitions the space  82  from the second substrate  60 , it is possible to prevent dust, or the like, which enters the space  82  from the opening  72  from being attached to the second substrate  60 . As a result, it is possible to maintain a performance of the second substrate  60  well. 
     Modification Example of Embodiment 
     (1) According to the embodiment, it is a configuration in which heat in the second substrate  60  is radiated from the opening  72 ; however, it may be a configuration in which heat is radiated from the first substrate  58  through the opening  72  instead of this configuration, or it may be a configuration in which heat of both the first substrate  58  and the second substrate  60  is radiated from the opening  72 . 
     In addition, it may be a configuration in which a flap member is attached to the medium returning lever  28 , air in the space  82  is agitated when the medium returning lever  28  is operated, and heat radiation from the opening  72  is promoted. 
     (2) According to the embodiment, it is a configuration in which the driving motor  38  is arranged at positions corresponding to the notch portion  58   b  of the first substrate  58 , and the notch portion  60   b  of the second substrate  60 ; however, it may be a configuration in which the feeding roller driving motor  32  is arranged at positions corresponding to the notch portion  58   b  of the first substrate  58 , and the notch portion  60   b  of the second substrate  60 , instead of the configuration. 
     When summarizing the above description, the printer  10  according to the embodiment includes the medium support unit  24  which supports a medium in an inclined state, the feeding roller  26  which sends out the medium which is supported by the medium support unit  24 , the substrates  58  and  60  which configure the control unit  54  of the apparatus, and the battery accommodation unit  56  which accommodates the battery  74  which is a power source of the feeding roller  26  and the control unit  54 . 
     The battery accommodation unit  56 , and the substrates  58  and  60  are arranged on the lower side of the medium support unit  24 , and the battery accommodation unit  56  is arranged at a position separated from a place which faces the substrates  58  and  60 . At least a part of the arranging region of the battery accommodation unit  56 , and at least part of the arranging regions of the substrates  58  and  60  are in the same range in the height direction. 
     In addition, at least a part of the arranging region of the battery accommodation unit  56 , and at least part of the arranging regions of the substrates  58  and  60  are in the same range in the apparatus depth direction. 
     At least a part of the battery accommodation unit  56  is put into the notch portions  58   a  and  60   a  which are formed in the substrates  58  and  60 . In addition, the battery accommodation unit  56  is provided at a center portion in the medium width direction intersecting the Y axis direction which is the medium feeding direction, that is, in the X axis direction. The battery accommodation unit  56  is provided on the rear side in the Y axis direction which is the apparatus depth direction, that is, on the +Y axis direction side in the space which is formed on the lower side of the medium support unit  24 . 
     The printer  10  includes the plurality of substrates  58  and  60 . The first substrate  58  which configures the plurality of substrates is provided in an erect posture on the rear surface side in the apparatus depth direction, that is, on the +Y axis direction side, and the second substrate  60  which configures the plurality of substrates is formed in a posture intersecting the first substrate  58 . 
     The printer  10  includes the feeding roller driving motor  32  and the driving motor  38  which are driven by the battery  74 . The feeding roller driving motor  32  and the driving motor  38  are provided on both sides of the battery accommodation unit  56  in the medium width direction which is a direction intersecting the Y axis direction which is the medium feeding direction, that is, in the X axis direction. 
     At least one of the feeding roller driving motor  32  and the driving motor  38  is put into the second notch portion  58   b  which is formed in the first substrate  58 , and is put into the second notch portion  60   b  which is formed in the second substrate  60 . 
     The printer  10  includes the medium returning lever  28  which returns a tip end of a medium which is sent out from the medium support unit  24  to the medium support unit  24  side, and the opening  72  which is formed in the frame  66  which forms the medium support unit  24 , and exposes the medium returning lever  28 . The opening  72  also functions as the heat radiating port which emits heat generated from the second substrate  60 . 
     The battery accommodation unit  56  is formed integrally with the frame  66  which forms the medium support unit  24 . Heat generated from the second substrate  60  is emitted from the opening  72  through the heat radiating member  84  which is provided at a position facing the opening  72  with respect to the second substrate  60 . 
     The printer  10  includes the recording head  44  which ejects liquid with respect to a medium, the platen  46  which is provided at a position which can face the recording head  44 , and supports the medium, the ink absorbing body  55  which holds ink which is ejected to a region separated from an end portion of a medium, and is guided from the higher part to the lower part of the platen  46 , and the waste ink cartridge  57  which holds ink ejected as waste ink from the recording head  44 . The occupying region of the second substrate  60  overlaps the occupying region of the ink absorbing body  55 , and the occupying region of the waste ink cartridge  57  in the apparatus height direction. 
     In addition, according to the embodiment of the invention, the battery accommodation unit  56  is applied to an ink jet printer as an example of the recording apparatus; however, it is also possible to apply the battery accommodation unit to a general liquid ejecting apparatus other than that. 
     Here, the liquid ejecting apparatus is not limited to a printer in which an ink jet recording head is used, and recording is performed on a medium for recording by ejecting ink from the recording head, and a recording apparatus such as a copy machine, a fax machine, or the like, and includes an apparatus in which liquid corresponding to a use thereof, instead of ink, is ejected onto a medium for ejecting corresponding to the medium for recording from a liquid ejecting head corresponding to the ink jet recording head, and the liquid is attached to the medium for ejecting. 
     As the liquid ejecting head, there are a coloring material ejecting head which is used when manufacturing a color filter such as a liquid crystal display, an electrode material (conductive paste) ejecting head which is used when forming an electrode of an organic EL display, a surface emission display (FED), or the like, a bioorganic substance ejecting head which is used when manufacturing a biochip, a sample ejecting head as a precision pipette, and the like, in addition to the recording head. 
     In addition, the invention is not limited to the above-described embodiment, and can be variously modified in the scope of the invention which is described in claims, it being needless to say that such modification examples are also included in the scope of the invention. 
     The entire disclosure of Japanese Patent Application No. 2014-062090, filed Mar. 25, 2014 is expressly incorporated by reference herein.