Patent Publication Number: US-11040541-B2

Title: Recording apparatus

Description:
BACKGROUND 
     1. Technical Field 
     The present invention relates to a recording apparatus. 
     2. Related Art 
     In the related art, there is known a liquid consumption apparatus including a tank in which liquid is stored and a cover movable to a closed position and an opened position. A window is formed in the cover, and a transparent member is provided in the window. Then, in a state where the cover is in the closed position, the tank can be visually recognized from an outside of the cover through the transparent member (for example, see JP-A-2016-505). 
     The liquid consumption apparatus as described above includes a waste liquid receiving unit for receiving a liquid discharged as a waste liquid. The waste liquid receiving unit needs to be exchanged appropriately according to a liquid receiving state. Therefore, there is a need to provide a protective cover for the waste liquid receiving unit. However, when the cover is provided for each of a tank and the waste liquid receiving unit, there is a problem that it is necessary to open/close the respective covers to perform an operation, and a convenience of a user is reduced. 
     SUMMARY 
     According to an aspect of the invention, there is provided a recording apparatus including: a recording unit that performs a recording by ejecting a liquid on a medium; a carriage that includes the recording unit in a bottom portion and is movable in a width direction intersecting a medium transporting direction; a casing that has the carriage therein and constitutes an external appearance of the apparatus; an adapter that is mounted on an upper portion of the recording unit and accommodates the liquid to be supplied to the recording unit; at least one liquid accommodating unit that supplies the liquid to the adapter through a tube and includes a filling port into which the liquid can be filled; and a waste liquid receiving unit that receives the liquid discharged as a waste liquid during a maintenance operation of the recording unit, in which the casing has a cover for covering both the liquid accommodating unit and the waste liquid receiving unit. 
     In the recording apparatus, it is preferable that the waste liquid receiving unit be provided below the liquid accommodating unit. 
     It is preferable that the cover of the recording apparatus be provided with a visual recognition unit capable of checking a remaining amount of the liquid of the liquid accommodating unit and a state of the waste liquid receiving unit. 
     It is preferable that the visual recognition unit of the recording apparatus be made of a light transmitting member capable of transmitting a visible light. 
     It is preferable that the visual recognition unit of the recording apparatus be provided at a position where the liquid accommodating unit can be visually recognized and at a position where the waste liquid receiving unit can be visually recognized. 
     It is preferable that the cover of the recording apparatus have a switching mechanism capable of switching a state of the visual recognition unit between a first state which is a visually recognizable state and a second state which has a low visibility. 
     It is preferable that the switching mechanism of the recording apparatus have a configuration in which the visual recognition unit (light transmitting member) can be attached/detached. 
     It is preferable that the switching mechanism of the recording apparatus include a configuration that can be electrically switched. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The invention will be described with reference to the accompanying drawings, wherein like numbers reference like elements. 
         FIG. 1A  is a front view showing an external appearance of a printer according to a first embodiment. 
         FIG. 1B  is a perspective view showing the external appearance of the printer according to the first embodiment. 
         FIG. 1C  is a perspective view showing the external appearance of the printer according to the first embodiment. 
         FIG. 1D  is a side view showing the external appearance of the printer according to the first embodiment. 
         FIG. 1E  is a side view showing the external appearance of the printer according to the first embodiment. 
         FIG. 1F  is a plan view showing the external appearance of the printer according to the first embodiment. 
         FIG. 1G  is a bottom view showing the external appearance of the printer according to the first embodiment. 
         FIG. 1H  is a rear view showing the external appearance of the printer according to the first embodiment. 
         FIG. 1I  is a schematic view showing a main configuration inside the printer according to the first embodiment. 
         FIG. 1J  is an explanatory view illustrating a switching mechanism of the printer according to the first embodiment. 
         FIG. 1K  is an explanatory view illustrating another switching mechanism of the printer according to the first embodiment. 
         FIG. 2  is a front view showing an external appearance of a printer according to a second embodiment. 
         FIG. 3  is a front view showing an external appearance of a printer according to a third embodiment. 
         FIG. 4  is a front view showing an external appearance of a printer according to a fourth embodiment. 
         FIG. 5  is a front view showing an external appearance of a printer according to a fifth embodiment. 
         FIG. 6  is a front view showing an external appearance of a printer according to a sixth embodiment. 
         FIG. 7  is a front view showing an external appearance of a printer according to a seventh embodiment. 
         FIG. 8  is a front view showing an external appearance of a printer according to an eighth embodiment. 
         FIG. 9  is a front view showing an external appearance of a printer according to a ninth embodiment. 
         FIG. 10  is a front view showing an external appearance of a printer according to a tenth embodiment. 
         FIG. 11  is a front view showing an external appearance of a printer according to an eleventh embodiment. 
         FIG. 12  is a front view showing an external appearance of a printer according to a twelfth embodiment. 
         FIG. 13  is a front view showing an external appearance of a printer according to a thirteenth embodiment. 
         FIG. 14  is a front view showing an external appearance of a printer according to a fourteenth embodiment. 
         FIG. 15  is a front view showing an external appearance of a printer according to a fifteenth embodiment. 
         FIG. 16  is a front view showing an external appearance of a printer according to a sixteenth embodiment. 
         FIG. 17  is a front view showing an external appearance of a printer according to a seventeenth embodiment. 
         FIG. 18  is a front view showing an external appearance of a printer according to an eighteenth embodiment. 
         FIG. 19  is a front view showing an external appearance of a printer according to a nineteenth embodiment. 
         FIG. 20  is a front view showing an external appearance of a printer according to a twentieth embodiment. 
         FIG. 21  is a front view showing an external appearance of a printer according to a twenty first embodiment. 
         FIG. 22  is a front view showing an external appearance of a printer according to a twenty second embodiment. 
         FIG. 23  is a front view showing an external appearance of a printer according to a twenty third embodiment. 
         FIG. 24  is a front view showing an external appearance of a printer according to a twenty fourth embodiment. 
         FIG. 25  is a front view showing an external appearance of a printer according to a twenty fifth embodiment. 
         FIG. 26  is a front view showing an external appearance of a printer according to a twenty sixth embodiment. 
         FIG. 27  is a front view showing an external appearance of a printer according to a twenty seventh embodiment. 
         FIG. 28  is a front view showing an external appearance of a printer according to a twenty eighth embodiment. 
         FIG. 29  is a front view showing an external appearance of a printer according to a twenty ninth embodiment. 
         FIG. 30  is a front view showing an external appearance of a printer according to a thirtieth embodiment. 
         FIG. 31  is a front view showing an external appearance of a printer according to a thirty first embodiment. 
         FIG. 32  is a front view showing an external appearance of a printer according to a thirty second embodiment. 
         FIG. 33  is a front view showing an external appearance of a printer according to a thirty third embodiment. 
         FIG. 34  is a front view showing an external appearance of a printer according to a thirty fourth embodiment. 
         FIG. 35  is a front view showing an external appearance of a printer according to a thirty fifth embodiment. 
         FIG. 36  is a front view showing an external appearance of a printer according to a thirty sixth embodiment. 
         FIG. 37  is a front view showing an external appearance of a printer according to a thirty seventh embodiment. 
         FIG. 38  is a front view showing an external appearance of a printer according to a thirty eighth embodiment. 
         FIG. 39  is a front view showing an external appearance of a printer according to a thirty ninth embodiment. 
         FIG. 40A  is a front view showing an external appearance of a printer according to a fortieth embodiment. 
         FIG. 40B  is an enlarged view showing a part of the external appearance of the printer according to the fortieth embodiment. 
         FIG. 40C  is an enlarged view showing a part of the external appearance of the printer according to the fortieth embodiment. 
         FIG. 41A  is a front view showing an external appearance of a printer according to a forty first embodiment. 
         FIG. 41B  is an enlarged view showing a part of the external appearance of the printer according to the forty first embodiment. 
         FIG. 42  is a side view showing an external appearance of a printer according to a forty second embodiment. 
         FIG. 43  is a side view showing an external appearance of a printer according to a forty third embodiment. 
         FIG. 44  is a side view showing an external appearance of a printer according to a forty fourth embodiment. 
         FIG. 45  is a side view showing an external appearance of a printer according to a forty fifth embodiment. 
         FIG. 46  is a side view showing an external appearance of a printer according to a forty sixth embodiment. 
         FIG. 47  is a side view showing an external appearance of a printer according to a forty seventh embodiment. 
         FIG. 48  is a side view showing an external appearance of a printer according to a forty eighth embodiment. 
         FIG. 49  is a side view showing an external appearance of a printer according to a forty ninth embodiment. 
         FIG. 50  is a side view showing an external appearance of a printer according to a fiftieth embodiment. 
     
    
    
     DESCRIPTION OF EXEMPLARY EMBODIMENTS 
     Each embodiment will be described as an example of an ink jet printer (hereinafter referred to as a printer) which is an example of a recording apparatus. The printer according to each embodiment can perform printing on a recording medium such as a recording paper with ink which is an example of a liquid. 
     Note that, for the printer according to each embodiment, a basic configuration is common. Embodiments are prepared in which an external appearance of the printer is varied. 
     Hereinafter, embodiments of the invention will be described with reference to the drawings. In each of the following drawings, the size of each member or the like is shown differently from the actual size in order to make each member or the like to be recognizable. 
     First Embodiment 
       FIG. 1A  is a front view showing an external appearance of a printer according to the present embodiment, and  FIGS. 1B and 1C  are perspective views showing the external appearance of the printer according to the present embodiment.  FIGS. 1D and 1E  are side views showing the external appearance of the printer according to the present embodiment, and  FIG. 1F  is a plan view showing the external appearance of the printer according to the present embodiment.  FIG. 1G  is bottom view showing the external appearance of the printer according to the present embodiment, and  FIG. 1H  is a rear view showing the external appearance of the printer according to the present embodiment. In  FIGS. 1A to 1H , X, Y, and Z axes which are mutually orthogonal coordinate axes are attached. The X, Y, and Z axes are attached to the drawings shown thereafter as necessary. 
     In the present embodiment, a state in which the printer  101  is disposed on a horizontal plane (XY plane) that is defined by an X axis and a Y axis, is a using state of the printer  101 . A posture of the printer  101  when the printer  101  is disposed on the XY plane is referred to as a using posture of the printer  101 . 
     A Z axis is an axis orthogonal to the horizontal plane. In the using state of the printer  101 , a direction along the Z axis is a vertical direction. In the using state of the printer  101 , a −Z direction is a vertically downward direction in  FIGS. 1A, 1B, and 1C . In each of the X, Y, and Z axes, a direction of an arrow indicates a direction of + (positive), and a direction opposite to the direction of the arrow indicates a direction of − (negative).  FIG. 1A  is a front view of the printer  101  as viewed from a +Y direction side.  FIGS. 1B and 1C  are perspective views of the printer  101  as viewed from a +X direction side. 
     As shown in  FIGS. 1A, 1B, and 1C , the printer  101  has a recording head  15  (recording unit), a casing  2 , a tank  21  (liquid accommodating unit), a waste liquid receiving unit  91 , and an opening/closing unit  40 . The printer  101  has an operation panel  3 , a paper discharging unit  4 , a lid unit  10 , and the like. Further, the printer  101  according to the present embodiment includes a scanner unit (not shown). That is, the printer  101  is a multifunction peripheral including the scanner unit. Note that, the printer  101  may not be a multifunction peripheral but a printer that does not include a scanner unit. 
     The casing  2  accommodates the recording head  15  and the like, and constitutes an outer shell (external appearance) of the printer  101 . The operation panel  3  is disposed outside the casing  2 . In the printer  101 , the operation panel  3  is disposed on a face where the paper discharging unit  4  is disposed (front  11 ). 
     The operation panel  3  includes a display panel  8 , a power button, an operation button, or the like (none of which are shown). Note that, as the display panel  8 , for example, it is possible to adopt a panel that can accept inputs by a user such as a touch panel. Further, a structure capable of adjusting an inclination of the operation panel  3  (also called tilt adjustment) may be adopted. If the inclination of the operation panel  3  can be adjusted, convenience can be enhanced since the user can view and operate the operation panel  3  with a desired inclination. 
     The paper discharging unit  4  is provided on a same side of the operation panel  3  in the casing  2 . In the printer  101 , a recording medium P (see  FIG. 1I ) is discharged from the paper discharging unit  4 . In the printer  101 , a face on which the paper discharging unit  4  is provided is a front  11 . The front  11  of the printer  101  is also a front  11  of the casing  2 . 
     The casing  2  has a side wall  13  and a side wall  14  that intersect the front  11 . When the front  11  is seen in front, that is, when the front  11  is viewed from the +Y direction side in a plan view, the side wall  13  is positioned on the +X direction side of the front  11  and the side wall  14  is positioned on the −X direction side of the front  11 . 
     The opening/closing unit  40  covers both the tank  21  and the waste liquid receiving unit  91 , and is provided on the front  11  side of the casing  2 . The opening/closing unit  40  is disposed on substantially the same plane as the front  11 . That is, in the present embodiment, the opening/closing unit  40  does not protrude toward the +Y direction side with respect to the front  11 . 
     Further, the opening/closing unit  40  is not recessed toward the −Y direction side with respect to the front  11 . 
     The opening/closing unit  40  is configured to be openable/closable to the casing  2 . Specifically, as shown in  FIGS. 1B and 1C , when the YZ plane is viewed from the +X direction side in a plan view with an axis (not shown) along the X axis as a rotation axis, the opening/closing unit  40  can be moved clockwise and counterclockwise. Also, in a case where the opening/closing unit  40  is to be opened, by rotating the opening/closing unit  40  in a counterclockwise direction when the YZ plane is viewed from the +X direction side in plan view in a state in  FIG. 1B  (the opening/closing unit  40  is in a closed state) with the axis along the X axis as the rotation axis, the opening/closing unit  40  can be opened to the casing  2  as shown in  FIG. 1C . On the other hand, in a case where the opening/closing unit  40  is to be closed, by rotating the opening/closing unit  40  in a clockwise direction when the YZ plane is viewed from the +X direction side in plan view in a state in  FIG. 1C  (the opening/closing unit  40  is in an open state) with the axis along the X axis as the rotation axis, the opening/closing unit  40  can be closed to the casing  2  as shown in  FIG. 1B . 
     When the opening/closing unit  40  is in the open state (see  FIG. 1C ), the tank  21  and the waste liquid receiving unit  91  accommodated in the casing  2  are exposed. 
     The waste liquid receiving unit  91  receives ink discharged as waste liquid from the recording head  15  or the like, and is configured to be attachable to and detachable from the casing  2 . For example, the waste liquid receiving unit  91  can be attached to and detached from the casing  2  by using a slide mechanism or the like. The waste liquid receiving unit  91  includes a receptor  91   a  (for example, a non woven fabric or a sponge (an open cell foam obtained by foaming foamed polyurethane as a raw material), or the like.) for receiving the ink and a frame body  91   b  covering at least a part of the receptor. Further, the frame body  91   b  is formed with a protruding unit  91   c . The protruding unit  91   c  is a grip unit which can be gripped by the user&#39;s fingers. 
     As shown in  FIG. 1C , the user can supply the ink into the tank  21  via a filling port  22  of the tank  21  by setting the opening/closing unit  40  in the open state (see  FIG. 1C ). The user can grip the protruding unit  91   c  of the waste liquid receiving unit  91  and pull it out in the +Y direction to detach the waste liquid receiving unit  91  from the casing  2 . Further, by pressing a new waste liquid receiving unit  91  in the −Y direction, the waste liquid receiving unit  91  can be attached in the casing  2 . 
     The waste liquid receiving unit  91  according to the present embodiment is provided in a lower part of the tank  21 . Since the waste liquid receiving unit  91  is disposed in a lower part in the gravity direction, the waste liquid (ink) can be efficiently received. 
     The opening/closing unit  40  is provided with visual recognition units  201  and  301 . The visual recognition units  201  and  301  have opening ports. The visual recognition units  201  and  301  check a remaining amount of ink in the tank  21  and a state of the waste liquid receiving unit  91  in the closed state (see  FIG. 1B ) of the opening/closing unit  40 . The visual recognition units  201  and  301  are provided at a position at which the tank  21  can be visually recognized when the opening/closing unit  40  is in the closed state and at a position at which the waste liquid receiving unit  91  can be visually recognized. 
     Further, the opening/closing unit  40  of the present embodiment includes the visual recognition unit  201  capable of visually recognizing the tank  21  and the visual recognition unit  301  capable of visually recognizing the waste liquid receiving unit  91 . It is possible to easily check a status of the tank (the remaining amount of the ink or the state near the filling port  22 ) and a status of the waste liquid receiving unit  91  through the visual recognition units  201  and  301 . 
     Light transmitting members  401  and  501  capable of transmitting the visible light are provided at the opening port portions of the visual recognition units  201  and  301 . The light transmitting members  401  and  501  are film members or the like. For example, the light transmitting members  401  and  501  are attached to the opening port portions of the visual recognition units  201  and  301  with an adhesive material or the like. By installing the light transmitting members  401  and  501  on the visual recognition units  201  and  301 , it is possible to check the status of the tank  21  and the waste liquid receiving unit  91 , and to prevent the tank  21  and the waste liquid receiving unit  91  from being contacted by the user&#39;s fingers or the like. Note that, the visual recognition units  201  and  301  according to the present embodiment are formed in a rectangular shape. 
     The lid unit  10  is configured to be a part of the casing  2 . The lid unit  10  is provided on an upper portion of the casing  2 . The lid unit  10  covers a scanner unit (not shown). The lid unit  10  is configured to be rotatable about an axis (not shown) along the X axis as a rotation axis. By rotating the lid unit  10  in one direction to the casing  2 , the lid unit  10  can be opened to the casing  2 . 
     Further, by rotating the lid unit  10  in another direction in a state where the lid unit  10  is opened, the lid unit  10  can be closed to the casing  2 . In this manner, the lid unit  10  is configured to be openable/closable to the casing  2 . Further, the lid unit  10  is provided with a paper feeding port  99  for feeding the recording medium P. By supplying the recording medium P from the paper feeding port  99 , it is possible to easily perform copying, scanning processing or the like. 
     When the lid unit  10  is opened to the casing  2 , a scanner unit is exposed. The scanner unit is a flat bed type and has an image capturing device (not shown) such as an image sensor. The scanner unit can read an image or the like recorded on a medium such as paper as image data via the image capturing device. Therefore, the scanner unit functions as a reading apparatus such as an image. 
     In the X axis direction, the length of the casing  2  and the length of the lid unit  10  are substantially the same. In the Y axis direction, the length at the position where the operation panel  3  of the casing  2  is provided and the length of the lid unit  10  are substantially the same. However, the length at the position where the opening/closing unit  40  of the casing  2  is provided is longer than the length of the lid unit  10 . 
     Therefore, when the printer  101  is viewed from the +X direction side in a plan view, the lid unit  10  overlaps with a portion other than the portion protruding toward the +Y direction side of the casing  2 . That is, when the lid unit  10  of the printer  101  is viewed from the +X direction side in a plan view, the opening/closing unit  40  provided in the portion protruding toward the +Y direction side of the casing  2  is disposed so as not to overlap with the lid unit  10 . Thus, upon rotating the opening/closing unit  40 , it can be rotated without being hindered by the lid unit  10 . 
     Next, a main configuration inside the casing  2  of the printer  101  will be described.  FIG. 1I  is a schematic view showing a main configuration inside the printer. As shown in  FIG. 1I , the printer  101  has a recording head  15  mounted on a carriage  32 , a control unit  16 , a tank unit  20 , and a waste liquid receiving unit  91 . The recording head  15 , the control unit  16 , the tank unit  20 , and the waste liquid receiving unit  91  are accommodated in the casing  2 . 
     The recording head  15  ejects ink as ink droplets and performs a recording on the recording medium P. The recording head  15  is mounted on the carriage  32  supported by a guide rail  31  disposed in the X axis direction. A moving mechanism (not shown) including a motor is connected to the carriage  32 , and the carriage  32  is reciprocated along the X axis direction (the width direction intersecting the transporting direction of the recording medium P) by driving the moving mechanism. As the carriage  32  moves, the recording head  15  reciprocates along the X axis direction. 
     In addition, the printer  101  includes a transporting unit (not shown) that can transport the recording medium P in the +Y direction. Also, recording is performed with the ink while reciprocating the carriage  32  and the recording head  15  along the X axis direction to the recording medium P transported in the +Y direction by the transporting unit. The transporting unit intermittently transports the recording medium P such as a recording paper in the +Y direction. 
     The control unit  16  controls driving of each of the above-described configurations. The control unit  16  includes a central processing unit (CPU) for executing various programs, a random access memory (RAM) for temporarily storing data and programs and the like, a read only memory (ROM) in which various data, various programs and the like are recorded in advance in a nonvolatile manner, and an interface. Also, the CPU processes various signals input via the interface based on the data of the RAM and the ROM, and outputs a control signal to each unit via the interface. 
     The tank unit  20  is disposed inside the portion (opening/closing unit  40 ) of the casing  2  further protruding toward the +Y direction side than the operation panel  3  and the paper discharging unit  4 . That is, when viewing the printer  101  from the +Y direction side, the tank unit  20  is disposed inside of the opening/closing unit  40  (−Y direction side). Further, the tank unit  20  is positioned between the operation panel  3  and the paper discharging unit  4 , and the side wall  13  in the X axis direction. 
     The tank unit  20  is configured with a plurality of tanks  21 . The tank unit  20  of the present embodiment includes four tanks  21 . Note that, the number of the tanks  21  in the tank unit  20  is not limited to four, but may be less than four or more than four. 
     In the embodiment, four tanks  21  are arranged side by side along the X axis. 
     Further, in the present embodiment, the plurality of tanks  21  is configured separately from each other. However, the configuration of the tank  21  is not limited to this. The tank unit  20  may be configured as one liquid accommodating container by integrating the plurality of tanks  21 . In such a configuration, the tank unit  20  is partitioned into individual tanks  21  so as to be able to accommodate different kinds of liquids. In this case, for example, it is possible to individually accommodate inks of different colors in the plurality of tanks  21 . 
     The tank  21  is a container for accommodating the ink. In the tank  21 , a filling port  22  communicating with the inside of the tank  21  is formed. The filling port  22  is configured as an opening port unit formed on a side positioned in the +Z direction side of the tank  21 . In the tank  21 , it is possible to fill the ink into the tank  21  from the outside of the tank  21  via the filling port  22 . Note that, the filling port  22  may be configured to be sealed with a cap. In such a configuration, when filling the ink into the tank  21 , the user can fill the ink after opening the filling port  22  by opening the cap. 
     The configuration of the tank  21  is not limited to the above. As the configuration of the tank  21 , for example, a tubular liquid filling portion protruding from an outer surface of the tank  21  may be provided. 
     At least a part of the tank  21  is configured to a member having light transmitting property. In a property of a material through which light passes, the term “having light transmitting property” includes not only the property of a state in which the other side of a material is visible through the material but also of a state in which a shape or the like of the other side of a material is not clearly recognized through the material. The visual recognition face  24  positioned in the +Y direction of the tank  21  has the light transmitting property, and it is possible to visually recognize the amount of ink accommodated in the tank  21  from the visual recognition face  24 . On the visual recognition face  24 , for example, an upper limit mark  25 , a lower limit mark  26 , or the like are added. The user can grasp the amount of ink in the tank  21  using the upper limit mark  25  and the lower limit mark  26  as reference marks. 
     The upper limit mark  25  indicates a measure of the amount of ink so that ink does not leak from the filling port  22  when the ink is filled from the filling port  22 . The lower limit mark  26  indicates a measure of the amount of ink when prompting the filling of ink. One of the upper limit mark  25  and the lower limit mark  26  may be provided. 
     The tank  21  has a sides  27  and  28  that intersect the visual recognition face  24 . When the visual recognition face  24  of the tank  21  is viewed from the +Y direction side, the side  27  is positioned on the side wall  13  side (+X direction side) of the casing  2 , and the side  28  is positioned on the side wall  14  side (−X direction side) of the casing  2 . 
     An ink supply tube  17  is connected to each tank  21 . An adapter  33  is mounted an upper part of the recording head  15 . Then, the ink in the tank  21  is supplied to the adapter  33  via the ink supply tube  17  and accommodated therein. The ink accommodated in the adapter  33  is supplied to the recording head  15 . Then, the ink supplied to the recording head  15  is ejected as ink droplets from nozzles (not shown) directed to the recording medium P side. 
     The ink is not limited to either an aqueous ink or an oil based ink. The aqueous ink may be either one having a constitution in which a solute such as a dye is dissolved in an aqueous solvent or one having a constitution in which a dispersoid such as a pigment is dispersed in an aqueous dispersion medium. The oil based ink may be either one having a constitution in which a solute such as a dye is dissolved in an oil based solvent or one having a constitution in which a dispersoid such as a pigment is dispersed in an oil based dispersion medium. 
     As shown in  FIG. 1A , the tank unit  20  (four tanks  21 ) is provided at a position overlapping with the opening/closing unit  40  provided with the visual recognition unit  201  when the front  11  of the printer  101  is viewed from the +Y direction side in plan view. Therefore, even if a surface of the tank  21  is not exposed to the outside, the user can visually recognize the tank  21  from the outside of the printer  101  via the visual recognition unit  201 . Then, for example, from the outside of the printer  101 , the user can grasp the amount of ink in the tank  21  using the upper limit mark  25  and the lower limit mark  26  as reference marks. 
     Further, by providing the light transmitting members  401  and  501  for closing the opening ports of the visual recognition units  201  and  301 , it is possible to prevent dust from entering which is from the outside of the printer  101  (casing  2 ) into the tank  21  or the waste liquid receiving unit  91 , or to prevent damage to the tank unit  20  and the waste liquid receiving unit  91  due to external contact or the like. Therefore, as compared with a case where the surfaces of the tank  21  or the waste liquid receiving unit  91  are exposed to the outside, it is possible to prevent adverse influences on the visibility due to dust, damage or the like from the outside. 
     The opening/closing unit  40  of the printer  101  may be configured to include a switching mechanism capable of switching states of the visual recognition units  201  and  301  between a first state which is a visually recognizable state and a second state which has a low visibility. For example, the switching mechanism is configured so that the opening/closing unit  40  can be attached/detached. 
       FIG. 1J  is an explanatory view illustrating a switching mechanism of the printer. Specifically,  FIG. 1J  shows the second state in which the visibility is low. As shown in  FIG. 1J , the printer  101  is provided with another opening/closing unit  40 A covering each of the tank  21  and the waste liquid receiving unit  91 . A full face of another opening/closing unit  40 A forms a flat face, and does not have the visual recognition units  201  and  301  (see  FIG. 1B ). Therefore, the visibility is lowered and the state of the tank  21  and the waste liquid receiving unit  91  can not be checked from the outside. 
       FIG. 1B  is the first state which is a visually recognizable state in which the opening/closing unit  40  having the visual recognition units  201  and  301  is provided, and  FIG. 1J  is the second state in which the other opening/closing unit  40 A not having the visual recognition units  201  and  301  and the like, and the visibility is lower than the first state. 
     The switching mechanism is configured to be fitted by utilizing the elasticity of the opening/closing unit  40  to the rotation axis of an axis (not shown) along the X axis that enables the opening/closing unit  40  to move clockwise and counterclockwise when the YZ plane is viewed from the +X direction side in plan view. That is, the opening/closing unit  40  is configured to be attachable/detachable by a snap fit to the axis along the X axis. In a case where switching the opening/closing unit  40  to another opening/closing unit  40 A, it can be easily switched by detaching opening/closing unit  40  from the axis along the X axis and attaching the other opening/closing unit  40 A to the axis along the X axis. 
     The color of the other opening/closing unit  40 A may be the same as the color of the external appearance of the casing  2 , or may be another color, and various variations can be applied. 
     In this way, by configuring the switching mechanism capable of switching between the first state and the second state, for example, in a case of using the printer  101 , by setting the opening/closing unit  40  to the first state, it is possible to check the state of the tank  21  and the waste liquid receiving unit  91  from the outside. On the other hand, in a case of not using the printer  101 , by setting the other opening/closing unit  40 A to the second state and by making it impossible to visually recognize the tank  21  and or the waste liquid receiving unit  91  from the outside, it is possible to improve design quality. 
     Note that, the switching mechanism is not limited to a configuration in which the opening/closing unit  40  and the other opening/closing unit  40 A are switched.  FIG. 1K  is an explanatory view illustrating another switching mechanism. As shown in  FIG. 1K , the printer  101  may be configured so that the visual recognition units  201  and  301  can be attached/detached and switched to another visual recognition units  201 A and  301 A. The other visual recognition units  201 A and  301 A have a configuration in which the visibility is lowered. For example, the other visual recognition units  201 A and  301 A are configured to be formed in a flat face on a full face and do not have a light transmitting member. 
     In this case, the visual recognition units  201  and  301  and the other visual recognition units  201 A and  301 A are formed in a nested shape that can be fitted into the opening/closing unit  40 , and are attachable to and detachable from the opening/closing unit  40 . In a case of switching the visual recognition units  201  and  301  to the other visual recognition units  201 A and  301 A, it can be easily switched by detaching visual recognition units  201  and  301  from the opening/closing unit  40  and attaching the other visual recognition units  201 A and  301 A to the opening/closing unit  40 . Thus, for example, it is possible to switch to the other visual recognition units  201 A,  301 A desired by the user, and it is possible to improve design quality. 
     Note that, the switching mechanism is not limited to a configuration in which visual recognition units  201  and  301  and the other visual recognition units  201 A and  301 A are switched. For example, the switching mechanism may be configured to switch light transmitting members  401  and  501  to other light transmitting members  401 A and  501 A. The other light transmitting members  401 A and  501 A have a configuration in which the visibility is lowered. For example, the other light transmitting members  401 A and  501 A are films having no light transmitting member. In this case, the light transmitting members  401  and  501  and the other light transmitting members  401 A and  501 A have adhesiveness and are films that can be attached and detached from the opening/closing unit  40 . 
     In a case where the light transmitting members  401  and  501  are switched to the other light transmitting members  401 A and  501 A, the light transmitting members  401  and  501  are detached from the opening/closing unit  40 , and the other light transmitting members  401 A and  501 A are attached to the opening/closing unit  40 . Thus, for example, it is possible to switch to the other light transmitting members  401 A and  501 A desired by the user, and it is possible to improve design quality. 
     Note that, the light transmitting members  401  and  501  may not be configured to be switched to the other light transmitting members  401 A and  501 A. The other light transmitting members  401 A and  501 A may be attached or detached on the light transmitting members  401  and  501 . Even in this case, the same effect as described above can be obtained. 
     As described above, according to the present embodiment, the following effects can be obtained. 
     By opening the opening/closing unit  40 , the tank  21  and the waste liquid receiving unit  91  can be exposed, and it is possible to easily replenish the ink to the tank  21  or exchange the waste liquid receiving unit  91  or the like. That is, in the present embodiment, instead of separately providing the opening/closing unit  40  for the tank  21  and the waste liquid receiving unit  91 , one opening/closing unit  40  is provided to cover the tank  21  and the waste liquid receiving unit  91 , so that the configuration of the printer  101  is simplified. Also, by opening one opening/closing unit  40 , it is possible to replenish the ink to the tank  21 , exchange the waste liquid receiving unit  91 , or the like, thereby enhancing the user&#39;s convenience. 
     In the first embodiment, as shown in  FIG. 1A , rectangular shape visual recognition units  201  and  301  in which the tank  21  and the waste liquid receiving unit  91  can be visually recognized are provided, however, this shape is not limited thereto. Various shapes can be applied to the visual recognition unit. 
     Therefore, another embodiment will be specifically described below. Note that, in each of the embodiments, the same reference numerals are given to the same configurations as those of the first embodiment, and the description thereof will be omitted. Since the basic configuration of the printer, the opening/closing unit, and the light transmitting member in each embodiment are also the same as those in the first embodiment, the description thereof will be omitted. Further, since the switching mechanism is also the same as that of the first embodiment, the description thereof will be omitted. In the following embodiment, a case where the opening/closing unit is in the first state (closed state) will be described. 
     First, in the first embodiment, the visual recognition units  201  and  301  are rectangular shape, however, the invention is not limited thereto, and various shapes regarding size, form, or the like can be applied to the visual recognition units  201  and  301 . 
       FIG. 2  is a front view showing an external appearance of a printer according to a second embodiment. 
     As shown in  FIG. 2 , the printer  102  has an opening/closing unit  40 , and is provided with visual recognition units  202  and  302  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  402  and  502  are provided in the visual recognition units  202  and  302 . 
       FIG. 3  is a front view showing an external appearance of a printer according to a third embodiment. 
     As shown in  FIG. 3 , the printer  103  has an opening/closing unit  40 , and is provided with visual recognition units  203  and  303  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  403  and  503  are provided in the visual recognition units  203  and  303 . 
       FIG. 4  is a front view showing an external appearance of a printer according to a fourth embodiment. 
     As shown in  FIG. 4 , the printer  104  has an opening/closing unit  40 , and is provided with visual recognition units  204  and  304  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  404  and  504  are provided in the visual recognition units  204  and  304 . 
       FIG. 5  is a front view showing an external appearance of a printer according to a fifth embodiment. 
     As shown in  FIG. 5 , the printer  105  has an opening/closing unit  40 , and is provided with visual recognition units  205  and  305  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  405  and  505  are provided in the visual recognition units  205  and  305 . 
       FIG. 6  is a front view showing an external appearance of a printer according to a sixth embodiment. 
     As shown in  FIG. 6 , the printer  106  has an opening/closing unit  40 , and is provided with visual recognition units  206  and  306  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  406  and  506  are provided in the visual recognition units  206  and  306 . Note that, in the present embodiment, the sizes of the visual recognition unit  206  and the visual recognition unit  306  are different. 
       FIG. 7  is a front view showing an external appearance of a printer according to a seventh embodiment. 
     As shown in  FIG. 7 , the printer  107  has an opening/closing unit  40 , and is provided with visual recognition units  207  and  307  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  407  and  507  are provided in the visual recognition units  207  and  307 . 
       FIG. 8  is a front view showing an external appearance of a printer according to an eighth embodiment. 
     As shown in  FIG. 8 , the printer  108  has an opening/closing unit  40 , and is provided with visual recognition units  208  and  308  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  408  and  508  are provided in the visual recognition units  208  and  308 . 
       FIG. 9  is a front view showing an external appearance of a printer according to a ninth embodiment. 
     As shown in  FIG. 9 , the printer  109  has an opening/closing unit  40 , and is provided with visual recognition units  209  and  309  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  409  and  509  are provided in the visual recognition units  209  and  309 . 
       FIG. 10  is a front view showing an external appearance of a printer according to a tenth embodiment. 
     As shown in  FIG. 10 , the printer  110  has an opening/closing unit  40 , and is provided with visual recognition units  210  and  310  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  410  and  510  are provided in the visual recognition units  210  and  310 . 
       FIG. 11  is a front view showing an external appearance of a printer according to an eleventh embodiment. 
     As shown in  FIG. 11 , the printer  111  has an opening/closing unit  40 , and is provided with visual recognition units  211  and  311  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  411  and  511  are provided in the visual recognition units  211  and  311 . As shown in  FIG. 11 , some parts of the visual recognition units  211  and  311  have a curved portion. 
       FIG. 12  is a front view showing an external appearance of a printer according to a twelfth embodiment. 
     As shown in  FIG. 12 , the printer  112  has an opening/closing unit  40 , and is provided with visual recognition units  212  and  312  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  412  and  512  are provided in the visual recognition units  212  and  312 . As shown in  FIG. 12 , some parts of the visual recognition units  212  and  312  have a curved portion. 
       FIG. 13  is a front view showing an external appearance of a printer according to a thirteenth embodiment. 
     As shown in  FIG. 13 , the printer  113  has an opening/closing unit  40 , and is provided with visual recognition units  213  and  313  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  413  and  513  are provided in the visual recognition units  213  and  313 . As shown in  FIG. 13 , each of the visual recognition units  213  and  313  has a plurality of opening ports (four in the present embodiment). Each opening port is formed in a rectangular shape. The plurality of opening ports of each of the visual recognition units  213  and  313  is arranged along an X axis. The number of the opening ports may be the same as the number of the tanks  21  mounted in the printer  113  and may be the number of kinds of colors of the ink accommodated in the tank  21 . In addition, the sizes of some parts of the opening ports in each of the visual recognition units  213  and  313  are different from the sizes of other opening ports. 
       FIG. 14  is a front view showing an external appearance of a printer according to a fourteenth embodiment. 
     As shown in  FIG. 14 , the printer  114  has an opening/closing unit  40 , and is provided with visual recognition units  214  and  314  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  414  and  514  are provided in the visual recognition units  214  and  314 . As shown in  FIG. 14 , each of the visual recognition units  214  and  314  has a plurality of opening ports (four in the present embodiment). Each opening port is formed in a rectangular shape. The plurality of opening ports of each of the visual recognition units  214  and  314  is arranged along an X axis. The number of the opening ports may be the same as the number of the tanks  21  mounted in the printer  114  and may be the number of kinds of colors of the ink accommodated in the tank  21 . In addition, the sizes of some of the opening ports in each of the visual recognition units  214  and  314  are different from the sizes of other opening ports. 
       FIG. 15  is a front view showing an external appearance of a printer according to a fifteenth embodiment. 
     As shown in  FIG. 15 , the printer  115  has an opening/closing unit  40 , and is provided with visual recognition units  215  and  315  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  415  and  515  are provided in the visual recognition units  215  and  315 . As shown in  FIG. 15 , each of the visual recognition units  215  and  315  has a plurality of opening ports (four in the present embodiment). Each opening port is formed in a rectangular shape. The plurality of opening ports of each of the visual recognition units  215  and  315  is arranged along an X axis. The number of the opening ports may be the same as the number of the tanks  21  mounted in the printer  115  and may be the number of kinds of colors of the ink accommodated in the tank  21 . In addition, the sizes of some of the opening ports in each of the visual recognition units  215  and  315  are different from the sizes of other opening ports. 
       FIG. 16  is a front view showing an external appearance of a printer according to a sixteenth embodiment. 
     As shown in  FIG. 16 , the printer  116  has an opening/closing unit  40 , and is provided with visual recognition units  216  and  316  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  416  and  516  are provided in the visual recognition units  216  and  316 . As shown in  FIG. 16 , each of the visual recognition units  216  and  316  has a plurality of opening ports (four in the present embodiment). Each opening port is formed in a rectangular shape. The plurality of opening ports of each of the visual recognition units  216  and  316  is arranged along an X axis. The number of the opening ports may be the same as the number of the tanks  21  mounted in the printer  116  and may be the number of kinds of colors of the ink accommodated in the tank  21 . In addition, the sizes of some of the opening ports in each of the visual recognition units  216  and  316  are different from the sizes of other opening ports. 
       FIG. 17  is a front view showing an external appearance of a printer according to a seventeenth embodiment. 
     As shown in  FIG. 17 , the printer  117  has an opening/closing unit  40 , and is provided with visual recognition units  217  and  317  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  417  and  517  are provided in the visual recognition units  217  and  317 . As shown in  FIG. 17 , each of the visual recognition units  217  and  317  has a plurality of opening ports (four in the present embodiment). Each opening port is formed in a rectangular shape. The plurality of opening ports of each of the visual recognition units  217  and  317  is arranged along an X axis. In addition, the opening ports in the visual recognition unit  217  are all the same size. The opening ports in the visual recognition unit  317  are all the same size. Note that, the size of the opening port is different between the visual recognition unit  217  and the visual recognition unit  317 . 
       FIG. 18  is a front view showing an external appearance of a printer according to an eighteenth embodiment. 
     As shown in  FIG. 18 , the printer  118  has an opening/closing unit  40 , and is provided with visual recognition units  218  and  318  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  418  and  518  are provided in the visual recognition units  218  and  318 . As shown in  FIG. 18 , each of the visual recognition units  218  and  318  has a plurality of opening ports (four in the present embodiment). Each opening port is formed in a rectangular shape. The plurality of opening ports of each of the visual recognition units  218  and  318  is arranged along an X axis. In addition, the opening ports of the visual recognition units  218  and  318  are all the same size. 
       FIG. 19  is a front view showing an external appearance of a printer according to a nineteenth embodiment. 
     As shown in  FIG. 19 , the printer  119  has an opening/closing unit  40 , and is provided with visual recognition units  219  and  319  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  419  and  519  are provided in the visual recognition units  219  and  319 . As shown in  FIG. 19 , each of the visual recognition units  219  and  319  has a plurality of opening ports (four in the present embodiment). Each opening port is formed in a rectangular shape. The plurality of opening ports of each of the visual recognition units  219  and  319  is arranged along an X axis. In addition, the opening ports of the visual recognition units  219  and  319  are all the same size. 
       FIG. 20  is a front view showing an external appearance of a printer according to a twentieth embodiment. 
     As shown in  FIG. 20 , the printer  120  has an opening/closing unit  40 , and is provided with visual recognition units  220  and  320  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  420  and  520  are provided in the visual recognition units  220  and  320 . As shown in  FIG. 20 , each of the visual recognition units  220  and  320  has a plurality of opening ports (four in the present embodiment). Each opening port is formed in a rectangular shape. The plurality of opening ports of each of the visual recognition units  220  and  320  is arranged along an X axis. In addition, the sizes of some of the opening ports in each of the visual recognition units  220  and  320  are different from the sizes of other opening ports. 
       FIG. 21  is a front view showing an external appearance of a printer according to a twenty first embodiment. 
     As shown in  FIG. 21 , the printer  121  has an opening/closing unit  40 , and is provided with visual recognition units  221  and  321  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  421  and  521  are provided in the visual recognition units  221  and  321 . As shown in  FIG. 21 , each of the visual recognition units  221  and  321  has a plurality of opening ports (four in the present embodiment). Each opening port is formed in a rectangular shape. The plurality of opening ports of each of the visual recognition units  221  and  321  is arranged along an X axis. In addition, the opening ports in the visual recognition unit  221  are all the same size. The opening ports in the visual recognition unit  321  are all the same size. Note that, the size of the opening port is different between the visual recognition unit  221  and the visual recognition unit  321 . 
       FIG. 22  is a front view showing an external appearance of a printer according to a twenty second embodiment. 
     As shown in  FIG. 22 , the printer  122  has an opening/closing unit  40 , and is provided with visual recognition units  222  and  322  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  422  and  522  are provided in the visual recognition units  222  and  322 . As shown in  FIG. 22 , each of the visual recognition units  222  and  322  has a plurality of opening ports (four in the present embodiment). Each opening port is formed in a rectangular shape. The plurality of opening ports of each of the visual recognition units  222  and  322  is arranged along an X axis. In addition, the opening ports in the visual recognition unit  222  are all the same size. The opening ports in the visual recognition unit  322  are all the same size. Note that, the size of the opening port is different between the visual recognition unit  222  and the visual recognition unit  322 . 
       FIG. 23  is a front view showing an external appearance of a printer according to a twenty third embodiment. 
     As shown in  FIG. 23 , the printer  123  has an opening/closing unit  40 , and is provided with visual recognition units  223  and  323  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  423  and  523  are provided in the visual recognition units  223  and  323 . As shown in  FIG. 23 , each of the visual recognition units  223  and  323  has a plurality of opening ports (four in the present embodiment). Each opening port is formed in a rectangular shape. The plurality of opening ports of each of the visual recognition units  223  and  323  is arranged along an X axis. In addition, the opening ports in the visual recognition unit  223  and  323  are all the same size. 
       FIG. 24  is a front view showing an external appearance of a printer according to a twenty fourth embodiment. 
     As shown in  FIG. 24 , the printer  124  has an opening/closing unit  40 , and is provided with visual recognition units  224  and  324  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  424  and  524  are provided in the visual recognition units  224  and  324 . As shown in  FIG. 24 , each of the visual recognition units  224  and  324  has a plurality of opening ports (four in the present embodiment). Each opening port is formed in a rectangular shape. The plurality of opening ports of each of the visual recognition units  224  and  324  is arranged along an X axis. In addition, the sizes of some of the opening ports in each of the visual recognition units  224  and  324  are different from the sizes of other opening ports. 
       FIG. 25  is a front view showing an external appearance of a printer according to a twenty fifth embodiment. 
     As shown in  FIG. 25 , the printer  125  has an opening/closing unit  40 , and is provided with visual recognition units  225  and  325  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  425  and  525  are provided in the visual recognition units  225  and  325 . As shown in  FIG. 25 , each of the visual recognition units  225  and  325  has a plurality of opening ports (four in the present embodiment). Each opening port is formed in a rectangular shape. The plurality of opening ports of each of the visual recognition units  225  and  325  is arranged along an X axis. In addition, the opening ports of the visual recognition units  225  and  325  are all the same size. 
       FIG. 26  is a front view showing an external appearance of a printer according to a twenty sixth embodiment. 
     As shown in  FIG. 26 , the printer  126  has an opening/closing unit  40 , and is provided with visual recognition units  226  and  326  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  426  and  526  are provided in the visual recognition units  226  and  326 . As shown in  FIG. 26 , each of the visual recognition units  226  and  326  has a plurality of opening ports (four in the present embodiment). Each opening port is formed in a rectangular shape. The plurality of opening ports of each of the visual recognition units  226  and  326  is arranged along an X axis. In addition, the sizes of some of the opening ports in each of the visual recognition units  226  and  326  are different from the sizes of other opening ports. 
       FIG. 27  is a front view showing an external appearance of a printer according to a twenty seventh embodiment. 
     As shown in  FIG. 27 , the printer  127  has an opening/closing unit  40 , and is provided with visual recognition units  227  and  327  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  427  and  527  are provided in the visual recognition units  227  and  327 . As shown in  FIG. 27 , each of the visual recognition units  227  and  327  has a plurality of opening ports (four in the present embodiment). Each opening port is formed in a rectangular shape. The plurality of opening ports of each of the visual recognition units  227  and  327  is arranged along an X axis. In addition, the sizes of some of the opening ports in the visual recognition unit  227  are different from the sizes of other opening ports. In addition, the opening ports in the visual recognition unit  327  are all the same size. 
       FIG. 28  is a front view showing an external appearance of a printer according to a twenty eighth embodiment. 
     As shown in  FIG. 28 , the printer  128  has an opening/closing unit  40 , and is provided with visual recognition units  228  and  328  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  428  and  528  are provided in the visual recognition units  228  and  328 . Each of the visual recognition units  228  and  328  has a plurality of opening ports (two in the present embodiment). Each opening port is formed in a rectangular shape. The plurality of opening ports of each of the visual recognition units  228  and  328  is arranged along an X axis. Further, the sizes of the opening ports in each of the visual recognition units  228  and  328  are different from each other. 
       FIG. 29  is a front view showing an external appearance of a printer according to a twenty ninth embodiment. 
     As shown in  FIG. 29 , the printer  129  has an opening/closing unit  40 , and is provided with visual recognition units  229  and  329  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  429  and  529  are provided in the visual recognition units  229  and  329 . Each of the visual recognition units  229  and  329  has a plurality of opening ports (two in the present embodiment). Each opening port is formed in a rectangular shape. The plurality of opening ports of each of the visual recognition units  229  and  329  is arranged along an X axis. Further, the sizes of the opening ports in each of the visual recognition units  229  and  329  are different from each other. 
       FIG. 30  is a front view showing an external appearance of a printer according to a thirtieth embodiment. 
     As shown in  FIG. 30 , the printer  130  has an opening/closing unit  40 , and is provided with visual recognition units  230  and  330  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  430  and  530  are provided in the visual recognition units  230  and  330 . As shown in  FIG. 30 , each of the visual recognition units  230  and  330  has a plurality of opening ports (four in the present embodiment). Each opening port is formed in a rectangular shape. The plurality of opening ports of each of the visual recognition units  230  and  330  is arranged along an X axis. In addition, the sizes of some of the opening ports in each of the visual recognition units  230  and  330  are different from the sizes of other opening ports. 
       FIG. 31  is a front view showing an external appearance of a printer according to a thirty first embodiment. 
     As shown in  FIG. 31 , the printer  131  has an opening/closing unit  40 , and is provided with visual recognition units  231  and  331  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  431  and  531  are provided in the visual recognition units  231  and  331 . As shown in  FIG. 31 , each of the visual recognition units  231  and  331  has a plurality of opening ports (five in the present embodiment). Each opening port is formed in a circular shape. The plurality of opening ports of each of the visual recognition units  231  and  331  is arranged along an X axis. In addition, the opening ports in the visual recognition units  231  and  331  are all the same size. 
       FIG. 32  is a front view showing an external appearance of a printer according to a thirty second embodiment. 
     As shown in  FIG. 32 , the printer  132  has an opening/closing unit  40 , and is provided with visual recognition units  232  and  332  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  432  and  532  are provided in the visual recognition units  232  and  332 . As shown in  FIG. 32 , the visual recognition units  232  and  332  have opening ports. Each opening port is formed in a rectangular shape. The plurality of opening ports of the visual recognition units  232  and  332  is arranged along a Z axis. In addition, the opening ports in the visual recognition units  232  and  332  are all the same size. 
       FIG. 33  is a front view showing an external appearance of a printer according to a thirty third embodiment. 
     As shown in  FIG. 33 , the printer  133  has an opening/closing unit  40 , and is provided with visual recognition units  233  and  333  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  433  and  533  are provided in the visual recognition units  233  and  333 . As shown in  FIG. 33 , each of the visual recognition units  233  and  333  has opening ports. Each opening port is formed in a rectangular shape. 
     In addition, the opening ports are all the same size. The plurality of opening ports of the visual recognition units  233  and  333  is arranged along an X axis and a Z axis. 
       FIG. 34  is a front view showing an external appearance of a printer according to a thirty fourth embodiment. 
     As shown in  FIG. 34 , the printer  134  has an opening/closing unit  40 , and is provided with visual recognition units  234  and  334  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  434  and  534  are provided in the visual recognition units  234  and  334 . As shown in  FIG. 34 , each of the visual recognition units  234  and  334  has opening ports. Each opening port is formed in a rectangular shape. 
     The plurality of opening ports of each of the visual recognition units  234  and  334  is arranged along an X axis and a Z axis. In addition, the sizes of some of the opening ports in each of the visual recognition units  234  and  334  are different from the sizes of other opening ports. 
       FIG. 35  is a front view showing an external appearance of a printer according to a thirty fifth embodiment. 
     As shown in  FIG. 35 , the printer  135  has an opening/closing unit  40 , and is provided with visual recognition units  235  and  335  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  435  and  535  are provided in the visual recognition units  235  and  335 . As shown in  FIG. 35 , the visual recognition units  235  and  335  have opening ports. Each opening port is formed in a rectangular shape. The plurality of opening ports of the visual recognition units  235  and  335  is arranged along a Z axis. In addition, the opening ports in the visual recognition units  235  and  335  are all the same size. Note that, in the present embodiment, since the plurality of opening ports of the visual recognition units  235  and  335  is arranged from the lower part to the upper part of the Z axis, it cannot be strictly discriminated between the visual recognition unit  235  and the visual recognition unit  335 . Briefly, the visual recognition unit  235  is provided the upper part of the Z axis, and the visual recognition unit  335  is provided the lower part of the Z axis. 
       FIG. 36  is a front view showing an external appearance of a printer according to a thirty sixth embodiment. 
     As shown in  FIG. 36 , the printer  136  has an opening/closing unit  40 , and is provided with visual recognition units  236  and  336  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  436  and  536  are provided in the visual recognition units  236  and  336 . As shown in  FIG. 36 , each of the visual recognition units  236  and  336  has opening ports. Each opening port is formed in a rectangular shape. The plurality of opening ports of each of the visual recognition units  236  and  336  is arranged along an X axis and a Z axis. In addition, the opening ports in each of the visual recognition units  236  and  336  are all the same size. Note that, in the present embodiment, since the plurality of opening ports of each of the visual recognition units  236  and  336  is arranged from the lower part to the upper part of the Z axis, it cannot be strictly discriminated between the visual recognition unit  236  and the visual recognition unit  336 . Briefly, the visual recognition unit  236  is provided the upper part of the Z axis, and the visual recognition unit  336  is provided the lower part of the Z axis. 
       FIG. 37  is a front view showing an external appearance of a printer according to a thirty seventh embodiment. 
     As shown in  FIG. 37 , the printer  137  has an opening/closing unit  40 , and is provided with visual recognition units  237  and  337  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  437  and  537  are provided in the visual recognition units  237  and  337 . As shown in  FIG. 37 , each of the visual recognition units  237  and  337  has opening ports. Each opening port is formed in a rectangular shape. The plurality of opening ports of each of the visual recognition units  237  and  337  is arranged along an X axis and a Z axis. In addition, the sizes of some of the opening ports in each of the visual recognition units  234  and  334  are different from the sizes of other opening ports. Note that, in the present embodiment, since the plurality of opening ports of each of the visual recognition units  237  and  337  is arranged from the lower part to the upper part of the Z axis, it cannot be strictly discriminated between the visual recognition unit  237  and the visual recognition unit  337 . Briefly, the visual recognition unit  237  is provided the upper part of the Z axis, and the visual recognition unit  337  is provided the lower part of the Z axis. 
       FIG. 38  is a front view showing an external appearance of a printer according to a thirty eighth embodiment. 
     As shown in  FIG. 38 , the printer  138  has an opening/closing unit  40 , and is provided with visual recognition units  238  and  338  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  438  and  538  are provided in the visual recognition units  238  and  338 . As shown in  FIG. 38 , each of the visual recognition units  238  and  338  has opening ports. Each opening port is formed in a rectangular shape. The plurality of opening ports of each of the visual recognition units  238  and  338  is arranged along an X axis and a Z axis. In addition, the sizes of some of the opening ports in each of the visual recognition units  238  and  338  are different from the sizes of other opening ports. Note that, in the present embodiment, since the plurality of opening ports of each of the visual recognition units  238  and  338  is arranged from the lower part to the upper part of the Z axis, it cannot be strictly discriminated between the visual recognition unit  238  and the visual recognition unit  338 . Briefly, the visual recognition unit  238  is provided the upper part of the Z axis, and the visual recognition unit  338  is provided the lower part of the Z axis. 
       FIG. 39  is a front view showing an external appearance of a printer according to a thirty ninth embodiment. 
     As shown in  FIG. 39 , the printer  139  has an opening/closing unit  40 , and is provided with visual recognition units  239  and  339  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  439  and  539  are provided in the visual recognition units  239  and  339 . As shown in  FIG. 39 , the visual recognition units  239  and  339  have opening ports. Each opening port is formed in a rectangular shape. The plurality of opening ports of the visual recognition units  239  and  339  is arranged along a Z axis. In addition, the opening ports of each of the visual recognition units  239  and  339  are different sizes. Note that, in the present embodiment, since the plurality of opening ports of the visual recognition units  239  and  339  is arranged from the lower part to the upper part of the Z axis, it cannot be strictly discriminated between the visual recognition unit  239  and the visual recognition unit  339 . Briefly, the visual recognition unit  239  is provided the upper part of the Z axis, and the visual recognition unit  339  is provided the lower part of the Z axis. 
       FIG. 40A  is a front view showing an external appearance of a printer according to a fortieth embodiment.  FIGS. 40B and 40C  are enlarged views showing a part of the external appearance of the printer according to the fortieth embodiment. 
     As shown in  FIG. 40A , the printer  140  has an opening/closing unit  40 , and is provided with visual recognition units  240  and  340  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  440  and  540  are provided in the visual recognition units  240  and  340 . 
     As shown in  FIGS. 40B and 40C , each of the visual recognition units  240  and  340  has opening ports. The sizes of each of the opening ports are relatively small and each opening port is formed in a rectangular shape. The plurality of opening ports is arranged along an X axis direction and a Z axis direction. The shape of the opening ports in each of the visual recognition units  240  and  340  may be a diamond shape or the like. 
       FIG. 41A  is a front view showing an external appearance of the printer according to the forty first embodiment.  FIG. 41B  is an enlarged view showing a partial external appearance of the printer according to the forty first embodiment. 
     As shown in  FIG. 41A , the printer  141  has an opening/closing unit  40 , and is provided with visual recognition units  241  and  341  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91 . Light transmitting members  441  and  541  are provided in the visual recognition units  241  and  341 . 
     As shown in  FIG. 41B , each of the visual recognition units  241  and  341  has opening ports. The sizes of each of the opening ports are relatively small and each opening port is formed in a circular shape. The plurality of opening ports is arranged along an X axis direction and a Z axis direction. The shape of the opening ports in each of the visual recognition units  241  and  341  may be an elliptic shape or the like. 
     In the above-described embodiment, the visual recognition unit is provided on the front  11  side (opening/closing unit  40 ), however, the invention is not limited thereto. For example, the visual recognition unit may be provided on the side wall  13  side. 
       FIG. 42  is a side view showing an external appearance of a printer according to a forty second embodiment. 
     As shown in  FIG. 42 , on a side wall  13  of the printer  142 , visual recognition units  242  and  342  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91  are provided. Light transmitting members  442  and  542  are provided in each of the visual recognition units  242  and  342 . As shown in  FIG. 42 , the opening ports of each of the visual recognition units  242  and  342  are formed in rectangular shape. In addition, the size of the opening port of the visual recognition unit  242  is different from the size of the opening port of the visual recognition unit  342 . 
       FIG. 43  is a side view showing an external appearance of a printer according to a forty third embodiment. 
     As shown in  FIG. 43 , on a side wall  13  of the printer  143 , visual recognition units  243  and  343  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91  are provided. Light transmitting members  443  and  543  are provided in each of the visual recognition units  243  and  343 . As shown in  FIG. 43 , the opening ports of each of the visual recognition units  243  and  343  are formed in rectangular shape. In addition, the size of the opening port of the visual recognition unit  243  is different from the size of the opening port of the visual recognition unit  343 . 
       FIG. 44  is a side view showing an external appearance of a printer according to a forty fourth embodiment. 
     As shown in  FIG. 44 , on a side wall  13  of the printer  144 , visual recognition units  244  and  344  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91  are provided. Light transmitting members  444  and  544  are provided in each of the visual recognition units  244  and  344 . Each of the visual recognition units  244  and  344  has a plurality of opening ports. The sizes of each of the opening ports are relatively small and each opening port is formed in a rectangular shape. 
     The plurality of opening ports is arranged along a Y axis direction and a Z axis direction. The shape of the opening ports in each of the visual recognition units  244  and  344  may be a diamond shape or the like. 
       FIG. 45  is a side view showing an external appearance of a printer according to a forty fifth embodiment. 
     As shown in  FIG. 45 , on a side wall  13  of the printer  145 , visual recognition units  245  and  345  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91  are provided. Light transmitting members  445  and  545  are provided in each of the visual recognition units  245  and  345 . Each of the visual recognition units  245  and  345  has a plurality of opening ports. The sizes of each of the opening ports are relatively small and each opening port is formed in a circular shape. 
     The plurality of opening ports is arranged along a Y axis direction and a Z axis direction. The shape of the opening ports in each of the visual recognition units  245  and  345  may be an elliptic shape or the like. 
       FIG. 46  is a side view showing an external appearance of a printer according to a forty sixth embodiment. 
     As shown in  FIG. 46 , on a side wall  13  of the printer  146 , visual recognition units  246  and  346  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91  are provided. Light transmitting members  446  and  546  are provided in each of the visual recognition units  246  and  346 . As shown in  FIG. 46 , some parts of the visual recognition units  246  and  346  have a curved portion. 
       FIG. 47  is a side view showing an external appearance of a printer according to a forty seventh embodiment. 
     As shown in  FIG. 47 , on a side wall  13  of the printer  147 , visual recognition units  247  and  347  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91  are provided. Light transmitting members  447  and  547  are provided in each of the visual recognition units  247  and  347 . As shown in  FIG. 47 , some parts of the visual recognition units  247  and  347  have a curved portion. 
       FIG. 48  is a side view showing an external appearance of a printer according to a forty eighth embodiment. 
     As shown in  FIG. 48 , on a side wall  13  of the printer  148 , visual recognition units  248  and  348  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91  are provided. Light transmitting members  448  and  548  are provided in each of the visual recognition units  248  and  348 . As shown in  FIG. 48 , the opening ports of each of the visual recognition units  248  and  348  are formed in a circular shape. Note that, a plurality of opening ports of each of the visual recognition units  248  and  348  may be formed. 
       FIG. 49  is a side view showing an external appearance of a printer according to a forty ninth embodiment. 
     As shown in  FIG. 49 , on a side wall  13  of the printer  149 , visual recognition units  249  and  349  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91  are provided. Light transmitting members  449  and  549  are provided in each of the visual recognition units  249  and  349 . As shown in  FIG. 49 , the opening ports of each of the visual recognition units  249  and  349  are formed in rectangular shape. The opening ports of the visual recognition unit  249  are arranged along a Y axis. The opening ports of the visual recognition unit  349  are arranged along a Z axis. 
       FIG. 50  is a side view showing an external appearance of a printer according to a fiftieth embodiment. 
     As shown in  FIG. 50 , on a side wall  13  of the printer  150 , visual recognition units  250  and  350  capable of checking a remaining amount of ink in a tank  21  and a state of a waste liquid receiving unit  91  are provided. Light transmitting members  450  and  550  are provided in each of the visual recognition units  250  and  350 . As shown in  FIG. 50 , the opening ports of each of the visual recognition units  250  and  350  are formed in rectangular shape. In addition, the size of the opening port of the visual recognition unit  250  is different from the size of the opening port of the visual recognition unit  350 . 
     Note that, in the forty second to the fiftieth embodiments, the shape of each visual recognition unit is taken as an example, however, the invention is not limited thereto, and the shape of the other visual recognition unit described above can be appropriately set. 
     Further, the invention is not limited to the above-described embodiments, and various modifications, improvements, or the like can be added to the above-described embodiments. Modification examples will be described below. 
     Modification Example 1 
     In the above embodiments, the waste liquid receiving unit  91  is disposed in the lower part of the tank  21 , however, the invention is not limited thereto. For example, the tank  21  and the waste liquid receiving unit  91  may be arranged in parallel along the X axis. Even in this case, the opening/closing unit  40  is provided to cover the tank  21  and the waste liquid receiving unit  91 . The opening/closing unit  40  is provided with a visual recognition unit capable of checking the remaining amount of ink in the tank  21  and the state of the waste liquid receiving unit  91 . Even in this case, the same effect as described above can be obtained. 
     For example, the waste liquid receiving unit  91  may be disposed an upper part of the tank  21 . 
     Further, although the visual recognition units are provided in each of the tank  21  and the waste liquid receiving unit  91 , a configuration may be adopted in which the tank  21  and the waste liquid receiving unit  91  can be visually recognized by one visual recognition unit. 
     Modification Example 2 
     The switching mechanism of the above embodiment is configured to attach/detach the visual recognition units  201  and  301 , however, the invention is not limited thereto. For example, the switching mechanism may be configured to be electrically switchable. Specifically, a liquid crystal panel is installed in the visual recognition units  201  and  301 , the visual recognition units  201  and  301  are set in a first state which is a light transmitting state (a state in which the state of the tank  21  and the waste liquid receiving unit  91  can be visually recognized) when a driving power of the liquid crystal panel is turned on, and the visual recognition units  201  and  301  are set in a second state which is a light blocking state in which light is blocked (a state in which the visibility of the tank  21  and the waste liquid receiving unit  91  is low) when the driving power is turned off. In this way, it is possible to easily switch between the first state and the second state. 
     Modification Example 3 
     Each of the configurations according to the first to fiftieth embodiments may be appropriately combined and applied. 
     Modification Example 4 
     In the above embodiment (for example, the first embodiment), the tank  21  and the waste liquid receiving unit  91  are disposed on the end side in the +X direction of the printer  101 , and the opening/closing unit  40  (visual recognition units  201  and  301 ) is provided corresponding to the tank  21  and the waste liquid receiving unit  91 , but the invention is not limited thereto. The tank  21  and the waste liquid receiving unit  91  may be disposed on the end side in the −X direction of the printer  101  and the opening/closing unit  40  (visual recognition units  201  and  301 ) may also be disposed on the end side in the −X direction in the same way. Even in this case, the same effect as described above can be obtained. 
     Contents derived from the embodiment will be described below. 
     An advantage of some aspects of the invention is to provide a recording apparatus including a recording unit that performs a recording by ejecting a liquid on a medium; a carriage that includes the recording unit in a bottom portion and is movable in a width direction intersecting a medium transporting direction; a casing that has the carriage therein and constitutes an external appearance of the apparatus; an adapter that is mounted on an upper portion of the recording unit and accommodates the liquid to be supplied to the recording unit; at least one liquid accommodating unit that supplies the liquid to the adapter through a tube and includes a filling port into which the liquid can be filled; and a waste liquid receiving unit that receives the liquid discharged as a waste liquid during a maintenance operation of the recording unit, in which the casing has a cover for covering both the liquid accommodating unit and the waste liquid receiving unit. 
     According to this configuration, by opening the cover, the liquid accommodating unit and the waste liquid receiving unit can be exposed, and it is possible to easily replenish the liquid to the liquid accommodating unit or exchange the waste liquid receiving unit or the like. That is, instead of separately providing the cover for the liquid accommodating unit and the waste liquid receiving unit, one cover is provided to cover the liquid accommodating unit and the waste liquid receiving unit, so that the configuration of the apparatus is simplified. Also, by opening one cover, it is possible to replenish the liquid to the liquid accommodating unit, exchange the waste liquid receiving unit, or the like, thereby enhancing the user&#39;s convenience. 
     In the above recording apparatus, it is preferable that the waste liquid receiving unit be provided in a lower part of the liquid accommodating unit. 
     Since the waste liquid receiving unit is disposed at a lower part in the gravity direction, the waste liquid (liquid) can be efficiently received. 
     The cover of the recording apparatus may be provided with a visual recognition unit capable of checking a remaining amount of the liquid of the liquid accommodating unit and a state of the waste liquid receiving unit. 
     According to this configuration, it is possible to easily check a status of the liquid accommodating unit (the remaining amount of the liquid or the state near the filling port) and the status of the waste liquid receiving unit via the visual recognition unit. 
     The visual recognition unit of the recording apparatus may be made of a light transmitting member capable of transmitting a visible light. 
     According to this configuration, since the visual recognition unit is formed of the light transmitting member, it is possible to check the condition of the liquid accommodating unit and the waste liquid receiving unit, and to prevent contact with the liquid accommodating unit and the waste liquid receiving unit by the user&#39;s fingers or the like. 
     The visual recognition unit of the recording apparatus may be provided at a position where the liquid accommodating unit can be visually recognized and at a position where the waste liquid receiving unit can visually recognize. 
     According to this configuration, it is possible to easily check a status of the liquid accommodating unit (the remaining amount of the liquid or the state near the filling port) and the status of the waste liquid receiving unit through the visual recognition unit. 
     The cover of the recording apparatus may have a switching mechanism capable of switching between a first state in which a state of the visual recognition unit can be visually recognized and a second state in which visibility is low. 
     According to this configuration, for example, by setting the cover to the first state when the recording apparatus is in use and setting the cover to the second state when the recording apparatus is not in use, it is possible to make it difficult to see the liquid accommodating unit and the waste liquid receiving unit except when the recording apparatus is in use, and it is possible to improve design quality. 
     The switching mechanism of the recording apparatus may have a configuration capable of attaching/detaching the visual recognition unit. 
     According to this configuration, the visual recognition unit (light transmitting member) can be attached/detached, for example, it is possible to change the visual recognition unit desired by the user, and it is possible to improve the design quality. 
     The switching mechanism of the recording apparatus may include a configuration that can be electrically switched. 
     According to this configuration, for example, it is possible to switch between a case where a power of the recording apparatus is turned on and a case where the power is turned off, and it is possible to easily perform the switching operation. 
     The present application is a continuation of U.S. patent application Ser. No. 16/282,915, filed Feb. 22, 2019, which claims priority to Japanese Patent Application No. 2018-030482, filed Feb. 23, 2018, the entire disclosures of which are expressly incorporated by reference herein.