Patent Publication Number: US-8967767-B2

Title: Liquid ejecting apparatus

Description:
BACKGROUND 
     1. Technical Field 
     The present invention relates to a liquid ejecting apparatus that ejects liquid from a liquid ejecting head. 
     2. Related Art 
     From the related art, as a type of liquid ejecting apparatuses, ink jet type printers have been widely known which eject ink (liquid) to a target such as paper from nozzles formed in the liquid ejecting head to perform recording. In such printers, in order to suppress clogging of the nozzles of a recording head (liquid ejecting head), flushing is performed which ejects (that is, discharges) the ink from the nozzles that waste ink (waste fluid) based on a control signal unrelated to recording with respect to the target. 
     For example, a liquid ejecting apparatus disclosed in JP-A-2006-192862 is provided with a block-shaped inclined surface member including an inclined surface portion (a liquid receiving surface) that receives the ink discharged from the nozzles of the recording head by the flushing operation and causes the received waste ink to flow down toward a waste ink tank side. Moreover, in the liquid ejecting apparatus, at the time of flushing, among various inks ejected from a plurality of nozzles, ink which is relatively hard to solidify rather than ink which is relatively easy to solidify is ejected toward an upper position of the inclined surface portion. That is, among various inks ejected from the nozzles and attached to the inclined surface portion, since the ink attached to the upper position is hard to solidify and flows down the inclined surface portion while maintaining fluidity, the ink flowing down from the upper position is mixed with the ink which is attached to a position lower than the upper position and is easily solidified while flowing down, and various inks flow down the inclined surface portion together and are collected in the waste ink tank. 
     However, among various inks attached onto the inclined surface portion of the inclined surface member configured to receive the ink ejected from the liquid ejecting heads due to flushing, in some cases, the ink which is easy to solidify may be deposited on the inclined surface portion and may be aggregated. Meanwhile, although the ink, which is ejected to the upper position of the inclined surface portion and is hard to solidify, is not aggregated and flows down along the inclined surface, power of the flow thereof is only weak enough to flow down according to gravity. For that reason, in the flow of ink of weak power, because the ink is easily solidified, it is difficult to cause the deposited and aggregated ink to flow down from the inclined surface. As a result, there was a problem that the waste ink cannot be collected in the waste ink tank. 
     In addition, such facts are almost common in liquid ejecting apparatuses having a receiving surface of liquid discharged from the liquid ejecting head as waste fluid, without being limited to an ink jet type printer including the flushing box having the receiving surface of the waste ink. 
     SUMMARY 
     An advantage of some aspects of the invention is to provide a liquid ejecting apparatus that has a receiving surface of liquid discharged from a liquid ejecting head as waste fluid, and is able to cause the liquid attached to the liquid receiving surface to flow down from the liquid receiving surface using the flow of the waste fluid so as not to be solidified in an aggregated form. 
     According to an aspect of the invention, there is provided a liquid ejecting apparatus that includes a liquid ejecting head that ejects liquid from nozzles; a liquid accommodation body having a liquid receiving surface configured to accommodate liquid flushed from the nozzles; a pump that discharges the liquid; a liquid supply flow path that discharges the liquid discharged by the pump toward the liquid receiving surface in the liquid accommodation body; and a liquid discharge flow path that discharges the liquid from the liquid accommodation body. 
     According to the liquid ejecting apparatus of the aspect of the invention, when the liquid is ejected (that is, flushed) toward the liquid accommodation body from the nozzles of the liquid ejecting head as the waste fluid in the state of liquid droplets, the liquid is attached to the liquid receiving surface of the liquid accommodation body. Meanwhile, when the pump is driven, the liquid discharged from the pump is led to the liquid accommodation body via a liquid supply path, and is discharged toward the liquid receiving surface on which the liquid is attached in the liquid accommodation body. Thus, it is possible to cause the liquid attached onto the liquid receiving surface to flow down from the liquid receiving surface using the flow of liquid so as not to be solidified. 
     Furthermore, in the liquid ejecting apparatus of the aspect of the invention, the pump may be a pump that discharges the liquid ejected from the nozzles of the liquid ejecting head via a cap capable of coming into contact with the nozzles so as to surround the nozzles. 
     According to the liquid ejecting apparatus of the aspect of the invention, when the pump is driven in the state of making the cap to be the contact position with respect to the liquid ejecting head, the liquid is forcibly discharged from the liquid ejecting head. Moreover, the liquid forcibly discharged in this manner is led to the liquid accommodation body via the cap and the liquid supply path, and is vigorously discharged toward the liquid receiving surface onto which the liquid is attached to the liquid accommodation body by discharge pressure due to the driving of the pump. Thus, it is possible to cause the liquid attached onto the liquid receiving surface to flow down from the liquid receiving surface using the flow of liquid so as not to be solidified. 
     Furthermore, in the liquid ejecting apparatus of the aspect of the invention, the liquid receiving surface may form an inclined surface shape, and a discharge port configured to discharge the liquid toward the liquid receiving surface from the liquid supply flow path may be formed on a lower side of the liquid receiving surface in a vertical direction. The liquid discharged toward the liquid receiving surface from the liquid supply path flows so as to run up the liquid receiving surface from the lower side, then flows so as to flow down along the liquid receiving surface, and flows out to the liquid discharge flow path from the liquid accommodation body. 
     According to the liquid ejecting apparatus of the aspect of the invention, the liquid discharged from the discharge port toward the liquid receiving surface from the liquid supply flow path may scrape off deposits of the liquid attached onto the liquid receiving surface when flowing on the inclined surface-shaped liquid receiving surface so as to run up from the down side. Moreover, the liquid flows so as to flow down on the liquid receiving surface along with deposits of the liquid scrapped off from the liquid receiving surface when running up, and then flows out to the liquid discharge flow path from the liquid accommodation body. For that reason, it is possible to reduce the risk of the solidification of the liquid attached onto the liquid receiving surface in the liquid accommodation body. 
     Furthermore, in the liquid ejecting apparatus of the aspect of the invention, the liquid supply flow path may be configured so that a height of a part connected to the liquid accommodation body in a vertical direction is lower than that of a part serving as the pump side. 
     According to the liquid ejecting apparatus of the aspect of the invention, it is possible to reduce a quantity of liquid remaining at the pump side after driving of the pump stops, in the liquid flowing to the liquid accommodation body side from the cap side via the liquid supply flow path due to driving of the pump. 
     Furthermore, in the liquid ejecting apparatus of the aspect of the invention, a flow path diameter of the liquid discharge flow path may be greater than a flow path diameter of the liquid supply flow path. 
     According to the liquid ejecting apparatus of the aspect of the invention, since the waste fluid flowed in via the liquid supply flow path can be discharged via the liquid discharge flow path having a diameter that is greater than the flow path diameter of the liquid supply flow path, it is possible to reduce the risk of unnecessary clog of the waste fluid in the liquid accommodation body. 
     Furthermore, in the liquid ejecting apparatus of the aspect of the invention, the inside of the liquid accommodation body formed with the liquid receiving surface may communicate with the atmosphere. 
     If the inside of the liquid accommodation body formed with the liquid receiving surface does not communicate with the atmosphere, when clogging is generated on the downstream side of the liquid discharge flow path, the waste fluid may flow backward to the inside of the liquid supply flow path of the upstream side via the liquid accommodation body due to the pressure. In this respect, according to the liquid ejecting apparatus of the aspect of the invention, even if clogging is generated on the downstream side of the liquid discharge flow path, since the pressure causing the backward flow is opened to the atmosphere in the liquid accommodation body communicating with the atmosphere, an occurrence of the backward flow can be suppressed. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The invention will be described with reference to the accompanying drawings, wherein like numbers reference like elements. 
         FIG. 1  is a perspective view of a printer of an embodiment related to the invention. 
         FIG. 2  is a front view that shows a schematic configuration of a maintenance system in the printer. 
         FIG. 3  is a perspective view of a flushing box. 
         FIG. 4  is an exploded perspective view of the flushing box. 
         FIG. 5A  is a perspective view when a replacement component is viewed from the upside obliquely, and  FIG. 5B  is a perspective view when the replacement component is viewed from the downside obliquely. 
         FIG. 6A  is a cross-sectional view of a case in the flushing box, and  FIG. 6B  is a cross-sectional view of major parts in the case. 
         FIG. 7  is a cross-sectional view that shows a state when obliquely mounting the replacement component to the case from the back side. 
         FIG. 8  is a cross-sectional view of a state where a frame body portion slides on and is guided by a rib from the state shown in  FIG. 7 . 
         FIG. 9  is a cross-sectional view of a state where the replacement component is further moved from the state shown in  FIG. 8  and a convex portion is inserted into a concave portion. 
         FIG. 10  is a cross-sectional view of a state where the replacement component is further moved from the state shown in  FIG. 9  and the convex portion is engaged with the concave portion. 
         FIG. 11  is a cross-sectional view that shows a state when mounting the replacement component to the case from the upside. 
         FIG. 12  is a cross-sectional view of a state where the replacement component is further moved from the state shown in  FIG. 11  and the convex portion reaches the concave portion. 
         FIG. 13  is a cross-sectional view that shows a state where waste ink is attached onto an ink receiving surface in the case in a deposition form. 
         FIG. 14  is a cross-sectional view that shows a state where the waste ink flows down from the ink receiving surface in the case. 
     
    
    
     DESCRIPTION OF EXEMPLARY EMBODIMENTS 
     Hereinafter, an embodiment will be described in which the invention is embodied in an ink jet type printer as a kind of a liquid ejecting apparatus and a flushing box as a liquid accommodating apparatus included in the printer based on  FIGS. 1 to 14 . 
     As illustrated in  FIG. 1 , a printer  11  of the present embodiment includes a frame  12  having a rectangular shape when viewed from a plane, and a support table  13  configured to support paper P as an example of a target which extends in a horizontal direction serving as a longitudinal direction of the frame  12 , in the frame  12 . Moreover, a paper transport mechanism having a paper transport motor  14  disposed on the backward side rather than the support table  13  is driven, whereby the paper P is fed on the support table  13  toward the front side from the rear side. Furthermore, a guide shaft  15  extending parallel to the longitudinal direction (the horizontal direction) of the support table  13  is built above the support table  13  in the frame  12 . 
     A carriage (a moving element)  16  is supported by the guide shaft  15  so that the carriage  16  can reciprocate along an axial direction (the horizontal direction) of the guide shaft  15 . Furthermore, at the positions corresponding to both end portions of the guide shaft  15  on the rear surface in the frame  12 , a driving pulley  17   a  and a driven pulley  17   b  are supported in a freely rotatable manner. A carriage motor  18  driven when causing the carriage  16  to reciprocate is connected to the driving pulley  17   a , and an endless timing belt  17 , in which a part thereof in the longitudinal direction is fixed to the carriage  16 , is wound between the pair of pulleys  17   a  and  17   b . Thus, the carriage  16  horizontally moves via the timing belt  17  while being guided by the guide shaft  15  by driving of the carriage motor  18 . 
     As illustrated in  FIG. 1 , a recording head  19  as an example of the liquid ejecting head is provided on the lower surface of the carriage  16 . Meanwhile, an ink cartridge  20  for supplying the ink as liquid to the recording head  19  is mounted on the carriage  16  in a freely attachable or detachable manner. The ink cartridge  20  supplies the ink to a nozzle  19   b  (see  FIG. 2 ) formed on a nozzle forming surface  19   a  (see  FIG. 2 ) constituted on the lower surface of the recording head  19  via an ink flow path (not shown) formed in the recording head  19 . 
     In addition, in one end portion (a right end portion in  FIG. 1 ) in the frame  12  in the longitudinal direction, that is, in a non-printing region where the paper P does not reach, a home position HP is provided which locates the carriage  16  at the time of power-off of the printer  11  and when performing the maintenance of the recording head  19 . Moreover, at a lower position of the home position HP, a maintenance system  21  is provided which performs various maintenance operations so that the ejection of ink with respect to the paper P from the nozzle  19   b  of the recording head  19  is satisfactorily maintained. 
     As illustrated in  FIG. 1 , the maintenance system  21  includes a box-shaped cap  22  with bottom corresponding to the nozzle forming surface  19   a  of the recording head  19 , and a flushing box (hereinafter, referred to as a “FL box”)  23  that receives the ink ejected (that is, discharged) from the nozzle  19   b  of the recording head  19  as the waste fluid based on the driving signal unrelated to printing with respect to the paper P. Furthermore, as shown in  FIG. 2 , the maintenance system  21  includes a waste ink tank  24  that collects the waste ink discharged from the FL box  23 , at the lower position of the FL box  23  in the gravitational direction. 
     A waste ink supply tube  25  as a liquid supply flow path is connected between the cap  22  and the FL box  23 , and a waste ink discharge tube  26  as a liquid discharge flow path is connected between the FL box  23  and the waste ink tank  24 . Furthermore, in the middle of the waste ink supply tube  25 , a suction pump  27  is provided which is pumped and driven when causing the waste ink to flow to the FL box  23  side from the cap  22  side. In addition, the suction pump  27  is a well-known so-called tube pump including a pressing member (not illustrated) that moves while crushing an intermediate portion of a waste ink supply tube  25  in the longitudinal direction supported by a peripheral wall inner surface of a cylindrical casing (not illustrated) between the intermediate portion and the peripheral wall inner surface toward the downstream side serving as the FL box  23  side from the upstream side serving as the cap  22  side along with driving of the pump. 
     In addition, as illustrated in  FIG. 2 , the waste ink supply tube  25  is disposed so that, in the flowing direction of ink, a downstream side site  25   a  connected to the FL box  23  is lower than an upstream side site  25   b  serving as the suction pump  27  side in a height in the gravitational direction (the vertical direction). Furthermore, as shown in  FIGS. 3 and 4 , comparing the waste ink supply tube  25  with the waste ink discharge tube  26 , a flow path diameter of the waste ink discharge tube  26  is greater than that of the waste ink supply tube  25 . That is, the dimension of the flow path diameter of the waste ink discharge tube  26  is set so that the value of the flow path cross-sectional area thereof is greater than that of one waste ink supply tube  25  and is greater than the total value of the flow path cross-sectional areas of all (as an example, four in the embodiment) the waste ink supply tubes  25 . 
     Furthermore, the cap  22  moves by driving of a lifting device  22   a  (see  FIG. 1 ) between a contact position (a position shown in  FIG. 2 ) capable of forming a closed space between the cap  22  and the nozzle forming surface  19   a  by coming into contact with the nozzle forming surface  19   a  of the recording head  19  so as to surround the nozzle  19   b , and a non-contact position where the cap  22  does not contact with the nozzle forming surface  19   a  as a position separated downward from the contact position. Furthermore, the cap  22  includes a plurality (as an example, four in the embodiment) of cap areoles  22   b  corresponding to each of the nozzle rows of the recording head  19 , and the upstream side end portions of four waste ink supply tubes  25  are individually connected to each of the cap areoles  22   b . In addition, at a location between the cap  22  and the suction pump  27  in the four waste ink supply tubes  25 , opening and clogging valves (not shown) are provided for each tube, and thus the selective maintenance operation for each nozzle row can be performed by the opening and clogging control of the valves. 
     As shown in  FIG. 2 , the carriage  16  is able to reciprocate between a printing region serving as an upper region of the support table  13  and the home position HP along a main scanning direction X serving as the horizontal direction. That is, at the time of printing, the ink is ejected toward the paper P supported by the support table  13  from the nozzle  19   b  of the recording head  19  while reciprocating in the printing region. Moreover, the images including characters, figures or the like are formed on the paper P by the printing operation. 
     Meanwhile, when the ink in the recording head  19  is thickened and air bubbles are mixed in the ink, the head cleaning as the maintenance operation of forcibly discharging the ink as the waste ink from the recording head  19  is performed. That is, as shown by a solid line in  FIG. 2 , the carriage  16  moves to the upper position of the cap  22  at the home position HP and stops. Moreover, after the cap  22  rises up to the contact position, when the suction pump  27  is driven, the ink is forcibly discharged as the waste fluid into the cap  22  from the nozzle  19   b , and then the waste ink is discharged to the downstream side such as the FL box  23  from the cap  22  via the waste ink supply tube  25 . 
     Furthermore, when a nozzle row including the nozzle  19   b , which does not eject the ink over a long time, is present in the recording head  19 , flushing is performed which ejects (that is, discharges) the ink as the waste ink (the waste fluid) in the state of the liquid droplet based on the driving signal unrelated to printing from the nozzle  19   b  of the nozzle row. In this case, the carriage  16  stops at the upper position of the FL box  23  at the home position HP. Then, the recording head  19  ejects (discharges) the ink as the waste ink toward the FL box  23  from the nozzle  19   b  requiring flushing, and the ink is accommodated in the FL box  23 . Thus, in this respect, the FL box  23  functions as a liquid accommodation device that receives the liquid (ink) discharged from the nozzle  19   b  of the recording head  19  as the waste fluid at the time of flushing that is a kind of maintenance of the recording head  19 . 
     As shown in  FIGS. 3 and 4 , the FL box  23  has a case (a liquid accommodation body)  28  which has an upward opening portion  28   a  having a rectangular shape corresponding to the nozzle forming surface  19   a  of the recording head  19  and in which the whole shape forms a rectangular parallelepiped shape, and a replacement component  29  having liquid absorption function that is mounted with respect to the case  28  in a freely attachable or detachable manner. The replacement component  29  includes a mounting member  45  having a rectangular frame body  45   a  corresponding to the opening portion  28   a  of the case  28 , and an ink absorbent member (a liquid absorbent material)  46  having the ink absorption function assembled to the mounting member  45 , and a wire netting member  47  that is fixed to the mounting member  45  in the state of covering the ink absorbent material  46  assembled to the mounting member  45 . The ink flushed from the recording head  19  is attached onto the surface of the ink absorbent material  46 , penetrates inside the ink absorbent material  46  and is absorbed. In addition, a part of the flushed ink is attached to the wire netting member  47 , then is penetrated inside the ink absorbent material  46  and is absorbed by hanging down. Furthermore, since there is a minute gap between the frame body portion  45   a  of the mounting member  45  and the side wall of the case  28  in the state where the replacement component  29  is mounted into the opening portion  28   a  of the case  28 , the inside of the FL box  23  communicates with the atmosphere via the gap. 
     As shown in  FIG. 4 , an accommodation concave portion  48  capable of accommodating a rectangular mat-shaped ink absorbent material  46  is formed on an upper surface side of the mounting member  45 , and a plurality of ink dropping ports  49   a  is formed by a beam member  49  forming a lattice on a lower surface of the accommodation concave portion  48 . For that reason, when the ink penetrates in the ink absorbent material  46  accommodated in the accommodation concave portion  48  of the mounting member  45  and is maintained, the ink moves downward in the ink absorbent material  46  with passage of time, and then drops down (hangs down) in the case  28  from the lower surface of the ink absorbent material  46  through the ink dropping port  49   a.    
     Furthermore, as shown in  FIGS. 4 ,  5 A and  5 B, a convex portion  50  forming a pair in a transverse direction of the frame body portion  45   a  protrudes toward one side (a mounting direction side to the case  28 ) in the longitudinal direction from one side surface (a left side in  FIG. 4 ) in the longitudinal direction of the frame body portion  45   a  in the mounting member  45 . In addition, as shown in  FIG. 5B , the convex portion  50  has a rectangular cross-sectional shape perpendicular to the protrusion direction, and the lower surface is formed in a tapered surface  50   a  in which the thickness of the convex portion  50  becomes thinner as going toward the leading end. 
     Furthermore, a gripping portion  51  for gripping the mounting member  45  with a finger tip (see  FIG. 7 ) when mounting the mounting member  45  into the opening portion  28   a  of the case  28  is formed from the side surface of the other side (a right side in  FIG. 4 ) in the longitudinal direction of the frame body portion  45   a . That is, by gripping the gripping portion  51 , a user is able to displace the replacement component  29  of the ink absorption function portion, in which the ink absorbent material  46  is integrally incorporated into the mounting member  45 , between an inclined posture with a lowered front and a horizontal posture when being attached to or detached from the case  28 . Furthermore, an elastically deformable hook portion  52  protrudes downward from a site formed with the gripping portion  51  in the frame body portion  45   a.    
     Meanwhile, as shown in  FIGS. 4 and 6A , the case  28  has an ink receiving surface (a liquid receiving surface)  30  that receives the ink dropped downward from the ink absorbent material  46  in the replacement component  29  mounted in the opening portion  28   a  via the dropping port  49   a  of the mounting member  45 . The ink receiving surface  30  is formed in an inclined form so that one side (the left side in  FIG. 4 ) in the longitudinal direction in the case  28  is located above the other side thereof (the right side in  FIG. 4 ) in the gravitational direction. Moreover, at the position near the upside in the ink receiving surface  30  of the inclined from, a vertical plate-shaped rib  31  forming a pair in the transverse direction of the case  28  protrudes upward. 
     The rib  31  functions as a guide portion that guides the frame body portion  45   a  of the mounting member  45  while causing the frame body portion  45   a  to slide to one side (the left side in  FIGS. 4 and 6A ) in the longitudinal direction of the case  28  when the replacement component  29  is mounted into the opening portion  28   a  of the case  28 , and the upper edge portions  32  of each rib  31  are formed so as to extend along the longitudinal direction of the case  28  serving as the mounting direction. In addition, a top portion  32   a  in the upper edge portion  32  of the rib  31  is formed so as to extend along the horizontal direction, and a continuous portion on one side (the left side in  FIG. 4  or the like) in the longitudinal direction of the case  28  with respect to the top portion  32   a  is formed in an inclined portion  32   b  extending obliquely downward from the top portion  32   a.    
     Furthermore, in the lower part of the rear side wall  28   b  of a case of assuming the mounting direction when mounting the replacement component  29  in the case  28  to a front-back direction, a discharge port  33  to which the upstream end of the waste ink discharge tube  26  having the downstream end connected to the waste ink tank  24  is connected, and a supply port  34 , to which the downstream end of the waste ink supply tube  25  having the upstream end connected to the cap  22  is connected, are formed. As shown in  FIGS. 6A and 6B , both of the discharge port  33  and the supply port  34  are formed at the same height as the position near the lower part in the inclined ink receiving surface  30 , and the discharge port  33  is formed at the position lower than the supply port  34  in the gravitational direction. In addition, as shown in  FIGS. 5A and 5B , the supply port  34  is formed so that a plurality (four in the embodiment) of supply ports  34  is arranged in a parallel state in the width direction of the ink receiving surface  30 . 
     In the upper part of the front side wall  28   c  of a case of assuming the mounting direction when mounting the replacement component  29  in the case  28  to a front-back direction, a mounting wall portion  35  having a thick wall portion  35   a  having a thickness dimension in the front-back direction greater than that of the front side wall  28   c  extends vertically upward. The rear wall portion  35   a  in the mounting wall portion  35  is separated and located in the transverse direction of the case  28  by a gap substantially corresponding to the gap between the pair of convex portions  50  protruding from the frame body portion  45   a  of the mounting member  45  in the replacement component  29 . Moreover, in a part that is a boundary between the lower end portion of the rear wall portion  35   a  and the upper end portion of the front wall portion  28   c  in the mounting wall portion  35 , an opening-shaped rectangular hole  36  penetrates and is formed as an example of the concave portion through which the convex portion  50  of the replacement component  29  side can be inserted or extracted in the mounting direction of the replacement component  29 . 
     Moreover, as shown in  FIGS. 4 and 6A  and  6 B, in response to the hole  36 , in the rear wall portion  35   a  of the mounting wall portion  35 , a groove  37  is formed so as to extend along the vertical direction which is able to guide the convex portion  50  of the replacement component  29  side while causing the convex portion  50  to slide in the direction toward the lower hole  36  from the upside of the hole  36 . That is, the groove  37  is formed so that the lower end portion thereof communicates with the hole  36  in the vertical direction from the direct upside. As a result, as shown in  FIG. 6B  in an exploded manner, an upper inner surface  38  and a lower inner surface  39  of the hole  36  are formed so that the position of the upper inner surface  38  deviates forward from that of the lower inner surface  39  when assuming the mounting direction of the replacement component  29  with respect to the case  28  to the front-back direction. 
     Furthermore, from a middle position in the front-back position (=the longitudinal direction of the case  28 ) on the lower inner surface  39  of the hole  36 , a chamfered portion  40  with a lowered front inclined shape extending to the front side opening (that is the mounting direction side) in the hole  36  is formed. As a result, the hole  36  is formed in a hole shape in which a gap L 2  (that is, a vertical width of the opening of the insertion side when inserting the convex portion  50  into the hole  36  from the inclined direction) in the inclined direction between the rear end of the upper inner surface  38  and the front end) of the lower inner surface  39  (the position where the chamfered portion  40  intersects with the lower inner surface  38  is greater than a gap L 1  in the vertical direction between the upper inner surface  38  and the lower inner surface  39 . In addition, the gap L 1  in the vertical direction between the upper inner surface  38  and the lower inner surface  39  of the hole  36  is a dimension corresponding to the thickness dimension of the convex portion  50  of the replacement component  29  side. In a state where the convex portion  50  is inserted into the hole  36  and then is engaged in the horizontal posture, the convex portion  50  is interposed from the both vertical sides by the upper inner surface  38  and the lower inner surface  39  of the hole  36 . 
     In addition, in the upper part of the rear side wall  28   b  in the case where the mounting direction when mounting the replacement component  29  to the case  28  is assumed to the front-back direction, a locking portion  41  for elastically deforming and locking the hook portion  52  of the replacement component  29  side when the replacement component  29  is mounted into the opening portion  28   a  of the case  28  rises rearward. In addition, the locking portion  41  has a rectangular cross-sectional shape perpendicular to the vertical direction, and the upper part of the rear surface serving as the surface along the vertical direction is formed in a tapered surface  41   a  that makes the locking portion  41  thin as going toward the upper end. 
     Thus, next, the operation of the printer  11  configured as mentioned above will be particularly described taking notice of the operation at the time of replacing of the replacement component  29  in the FL box  23  and the operation at the time of driving of the suction pump  27  for cleaning the recording head  19 . First, the operation at the time of replacing the replacement component  29  of the FL box  23  will be described. 
     When the ink absorption ability of the ink absorbent material  46  falls in the FL box  23 , there is a need to replace the old ink absorbent material  46  with a new ink absorbent material  46 . In this case, in the embodiment, the replacement work of the ink absorbent material  46  is performed in the unit of the replacement component  29  in which the ink absorbent material  46  is integrally incorporated to the mounting member  45 . 
     That is, after detaching the old replacement component  29  from the opening portion  28   a  of the case  28  of the FL box  23 , as shown in  FIG. 7 , at the upper position of the opening portion  28   a , the new replacement component  29  is placed in the inclined posture with a lowered front in which the convex portion  50  faces forward. At this time, a user is able to easily make the replacement component  29  to the inclined posture with a lowered front, by gripping the gripping portion  51  protruding rearward from the rear part of the frame body portion  45   a  in the replacement component  29  with a finger tip. 
     Moreover, when lowering the replacement component  29  downward in the inclined state from the state shown in  FIG. 7 , as shown in  FIG. 8 , the lower end of the front portion of the frame body portion  45   a  in the replacement component  29  comes into contact with the rib  31  in the opening portion  28   a  in the case  28 . At this time, since the upper edge portion  32  of the rib  31  comes into contact with the replacement component  29  from the downside in the gravitational direction, falling of the replacement component  29  into the opening portion  28   a  of the case  28  is suppressed. In addition, in the state shown in  FIG. 8 , the front lower end of the frame body portion  45   a  of the mounting member  45  in the replacement component  29  comes into contact with the top portion  32   a  extending in the horizontal direction of the upper edge portion  32  of the rib  31  along the mounting direction. 
     Moreover, when moving the replacement component  29  forward (the left part in  FIG. 8 ) serving as the mounting direction while maintaining the state of the inclined posture from the state shown in  FIG. 8 , the replacement component  29  is guided so that the convex portion  50  moves toward the hole  36  while the frame body portion  45   a  slides on the upper edge portion  32  of the rib  31 . In this respect, the rib  31  functions as a guide portion that causes the replacement component  29  to slide toward a direction facing the hole  36  and guides the replacement component  29 . Moreover, when further moving the replacement component  29  forward in that state, in the replacement component  29 , the frame body portion  45   a  shifts the sliding part to the inclined portion  32   b  continuously extending to the front inclined lower part from the top portion  32   a  of the upper edge portion  32  of the rib  31 . 
     Moreover, when the sliding part thereof is sifted to the inclined portion  32   b  of the upper edge portion  32  of the rib  31 , in the replacement component  29 , the leading end of the convex portion  50  protruding forward from the frame body portion  45   a  is immediately inserted into the hole  36  of the case  28  side. In addition, in this case, in the hole  36  of the case  28  side, since the upper inner surface  38  is located so as to deviate forward rather than the lower inner surface  39 , the vertical width (=L 2 ) of the opening of the insertion side, in which the convex portion  50  is inserted into the hole  36  from the inclined direction, is secured to be greater than the thickness dimension (=L 1 ) of the convex portion  50 . Furthermore, the lower surface side of the convex portion  50  is formed in the tapered surface  50   a  that becomes thinner as going toward the leading end of the convex portion  50 . For that reason, when the frame body portion  45   a  of the replacement component  29  shifts the sliding part to the inclined portion  32   b  of the upper edge portion  32  of the rib  31 , the leading end of the convex portion  50  of the replacement component  29  is immediately and smoothly inserted into the hole  36  of the case  28  side. 
     Moreover, when further moving the replacement component  29  forward from that state, as shown in  FIG. 9 , the replacement component  29  enters the state where the front lower end of the frame body portion  45   a  is separated from the upper edge portion  32  of the rib  31  in the inclined posture in which the convex portion  50  is deeply inserted into the hole  36 . Furthermore, at the time, the replacement component  29  enters the inclined posture state where the lower end of the hook portion  52  provided behind the frame body portion  45   a  comes into contact with the tapered surface  41   a  of the locking portion  41  provided above the rear side wall  28   b  in the case  28 . 
     Moreover, when rotating and displacing the replacement component  29  from the state shown in  FIG. 9  using the engagement part between the hole  36  and the convex portion  50  as a fulcrum so that the inclined posture state becomes the horizontal posture state in the state of inserting the convex portion  50  into the hole  36 , as shown in  FIG. 10 , the hook portion  52  hanging down from the rear part of the frame body portion  45   a  is elastically deformed and is locked to the locking portion  41  of the case  28  side. Furthermore, at this time, in the hole  36 , the engagement state is provided where the convex portion  50  is interposed between the upper inner surface  38  and the lower inner surface  39  of the hole  36  from both vertical sides. As a result, the replacement component  29  is mounted in the state where the horizontal posture is correctly positioned in the opening portion  28   a  of the case  28 . Thus, in this respect, the hole  36  functions as a positioning portion that engages the replacement component  29  and making the replacement component  29  to the positioning state when mounting the replacement component  29 . 
     In addition, when mounting the replacement component  29  into the opening portion  28   a  of the case  28 , the replacement component  29  may not be guided in the direction toward the hole  36  using the rib  31  in the opening portion  28   a , but the replacement component  29  may be guided to the hole  36  using the groove  37  formed in the mounting wall portion  35 , as shown in  FIG. 11 . That is, as the guide portion that causes the replacement component  29  to slide in the mounting direction toward the hole  36  as the positioning portion and guides the replacement component  29 , the groove  37  may function instead of the rib  31 . 
     As shown in  FIG. 11 , in this case, at the upper position of the opening portion  28   a  of the case  28 , the replacement component  29  is placed so as to be the horizontal posture in which the leading end of the convex portion  50  is inserted into the groove  37 . Moreover, when lowering the replacement component  29  in the state of the horizontal posture from the state shown in  FIG. 11 , the replacement component  29  is guided toward the hole  36  as the positioning portion while the convex portion  50  slides on the groove  37 . Moreover, first, as shown in  FIG. 12 , the rear portion (=the rear portion of the frame body portion  45   a ) of the replacement component  29  comes into contact with the upper end portion (the contact portion)  28   d  of the wall portion surrounding the opening portion  28   a  in the case  28  from above, and thus the replacement component  29  enters the inclined posture where the front of the frame body portion  45   a  falls down. 
     However, as shown in  FIG. 11 , in the case of the incomplete engagement state where the convex portion  50  is not engaged with the hole  36  in the positioning state, a part of the frame body portion  45   a  is placed above the opening portion  28   a  and in the region in which the carriage  16  equipped with the recording head  19  moves. For that reason, when the carriage  16  equipped with the recording head  19  moves, not the recording head  19  but the carriage  16  equipped with the recording head  19  collides with the replacement component  29  mounted in the incomplete engagement state. That is, even when the case  28  and the replacement component  29  are not correctly mounted, it is possible to prevent the recording head  19  from colliding with the replacement component  29  when the carriage  16  moves. 
     Furthermore, in the replacement component  29  entering the inclined posture with a lowered front, the convex portion  50  is guided by the groove  37 , enters the hole  36  from above, and comes into contact with the lower inner surface  39  of the hole  36  in the state of the inclined posture with a lowered front. Moreover, at this time, the leading end of the convex portion  50  is located on the front side in the insertion direction rather than the lower inner surface  39  of the hole  36  in the hole  36 . That is, the leading end of the convex portion  50  is located above the inclined chamfered portion  40  in the hole  36 . For that reason, in the replacement component  29 , the convex portion  50  is further guided to the front inclined lower part along the chamfered portion  40  with a lowered front according to gravity, and is smoothly and deeply inserted into the hole  36 . That is, the replacement component  29  enters the inclined posture state as shown in above-mentioned  FIG. 9 . Moreover, the replacement component  29  is displaced to the horizontal posture shown in  FIG. 10  from that state, and thus the replacement component  29  is mounted with respect to the case  28  in a correctly positioned state. 
     Meanwhile, when detaching the replacement component  29  in the state of being mounted into the opening portion  28   a  of the case  28 , in the state shown in  FIG. 10 , after the locking state of the hook portion  52  with respect to the locking portion  41  is removed by a finger tip while gripping the gripping portion  51 , the replacement component  29  is tilted so as to be the inclined state shown in  FIG. 9 . In addition, at this time, the chamfered portion  40  in the hole  36  functions as a roll-off portion that permits the inclined displacement of the convex portion  50  along with tilting of the replacement component  29 . 
     Moreover, next, when moving the replacement component  29  in a direction (rearward) in which the convex portion  50  is extracted from the hole  36  from the state shown in  FIG. 9 , the lower end of the front portion of the frame body portion  45   a  in the replacement component  29  slides on the inclined portion  32   b  of the rib  31  in the case  28  and is guided to the rear inclined upper part. Moreover, when further moving the replacement component  29  rearward from that state, as shown in  FIG. 8 , since the lower end of the front portion of the frame body portion  45   a  slides on the horizontal top portion  32   a  in the upper edge portion  32  of the rib  31 , the replacement component  29  can be detached from the case  28 . 
     Next, the operation when the suction pump  27  is driven at the time of cleaning the recording head  19  will be described. 
     Ink, which is absorbed and maintained in the ink absorbent material  46  by flushing in the FL box  23  in which the replacement work of the replacement component  29  incorporated with the ink absorbent material  46  is performed, moves downward in the ink absorbent material  46  with passage of time. Moreover, the ink drops on the case  28  through the ink dropping port  49   a  formed on the lower surface side of the mounting member  45  and is attached onto the ink receiving surface  30 . Moreover, when the ink repeatedly drops and the attachment of the ink with respect to the same location on the ink receiving surface  30  is repeated, as shown in  FIG. 13 , the ink is attached onto the ink receiving surface  30  to obtain a deposited aggregated deposit  60 . 
     Meanwhile, when cleaning the recording head  19 , as shown by a solid line in  FIG. 2 , the cap  22  is maintained at the contact position of coming into contact with the nozzle forming surface  19   a  of the recording head  19  in the state of surrounding the nozzle  19   b , and the suction pump  27  is driven in that state. Then, the ink thickened from the nozzle  19   b  by negative pressure generated in the cap  22  is forcibly discharged into the cap  22  as the waste fluid. The suction pump  27  sucks the ink from the upstream side by the negative pressure and pushes and discharges the ink by positive pressure on the downstream side. For that reason, the waste ink is further vigorously discharged into the FL box  23  from the supply port  34  via the waste ink supply tube  25  by the discharge pressure of the suction pump  27 . 
     Then, the waste ink is vigorously discharged toward to the ink receiving surface  30  in the case  28 , and the waste ink flows so as to run up the inclined ink receiving surface  30  from the downside to the upside. Moreover, as shown by a two-dot-chain line in  FIG. 14 , in the middle of the flow, the waste ink takes the ink deposit  60  of the ink attached onto the ink receiving surface  30  in an aggregated state by momentum of the flow of ink. Moreover, next, the waste ink flows down the inclined ink receiving surface  30  toward the lower discharge port  33 , together with the deposit  60  of the ink that is scrapped off when running up the inclined ink receiving surface  30 . Moreover, the waste ink flowed down the inclined ink receiving surface  30  is discharged to the waste ink tank  24  from the discharge port  33  via the waste ink discharge tube  26 , together with the deposit  60  of the ink scrapped off from the ink receiving surface  30 . 
     In addition, when driving of the suction pump  27  is stopped along with the cleaning end of the recording head  19 , the supply of the waste ink flowed on the FL box  23  side (the downstream side) via the waste ink supply tube  25  from the cap  22  side (the upstream side) until then is stopped. For that reason, the waste ink remaining in the waste ink supply tube  25  at the time of stopping tries to flow in the waste ink supply tube  25  toward the low direction according to gravity. That is, in this case, since the site connected to the FL box  23  in the waste ink supply tube  25  is low, the residual ink in the waste ink supply tube  25  naturally flows in the FL box  23 . 
     Furthermore, although a large amount of waste ink is supplied into the FL box  23  from the cap  22  side via the waste ink supply tube  25  along with driving of the suction pump  27  when cleaning the recording head  19 , the large amount of waste ink is discharged to the waste ink tank  24  via the waste ink discharge tube  26  having the flow path diameter formed to be greater than that of the waste ink supply tube  25 . For that reason, the waste ink does not unnecessarily stay in the case  28  of the FL box  23 . 
     Furthermore, even if clogging of the ink occurs on the downstream side of the waste ink discharge path rather than the FL box  23 , such as the waste ink discharge tube  26  by which the FL box  23  and the waste ink tank  24  are connected to each other, since the FL box  23  communicates with the atmosphere, the pressure in the FL box  23  does not increase. 
     According to the above-mentioned embodiment, the following effects can be obtained. 
     (1) The replacement component  29  replaced and mounted for maintenance of the ink absorption function is configured so that the convex portion  50  is guided so as to be inserted toward the hole  36  of the case  28  while sliding on the rib  31  (or the groove  37 ) of the case  28 , and the replacement work is easy. Moreover, the replacement component  29  is mounted with respect to the case  28  in a correctly positioned state when the convex portion  50  is engaged with the hole  36 . Thus, it is possible to easily and correctly mount the replacement component  29  replaced for maintenance of the ink absorption function if necessary in the FL box  23  configured to receive the ink discharged from the recording head  19  as the waste fluid. 
     (2) When mounting the replacement component  29  within the opening portion  28   a  of the case  28 , the rib  31  in the case  28  comes into contact with the replacement component  29  from the downside in the gravitational direction, thereby to suppress the depression of the replacement component  29  into the opening portion  28   a . For that reason, it is possible to guide the replacement component  29  in the direction in which the convex portion  50  is smoothly engaged with the hole  36  of the case  28 . 
     (3) When moving the replacement component  29  in the mounting direction while causing the frame body portion  45   a  to slide on the upper edge portion  32  of the rib  31  in the opening portion  28   a  in the case  28 , while making the frame body portion  45   a  of the replacement component  29  to the inclined posture with a lowered front, the leading end of the convex portion  50  protruding from the frame body portion  45   a  is inserted into the hole  36  serving as the positioning portion. Moreover, when causing the frame body portion  45   a  to slide on the inclined portion  32   b  of the rib  31  while further inserting the convex portion  50  into the hole  36  from that state, it is possible to return the frame body portion  45   a  of the replacement component  29  to the horizontal posture from the inclined posture and mount the frame body portion  45   a  in the positioning state. Meanwhile, when extracting the convex portion  50  from the hole  36  to detach the replacement component  29  from the case  28 , if the frame body portion  45   a  of the replacement component  29  is set to the inclined posture from the horizontal posture, and is moved in the detachment direction serving as an opposite direction of the mounting direction while causing the frame body portion  45   a  of the replacement component  29  to slide on the inclined portion  32   b  with a lowered front of the rib  31  in that posture, the replacement component  29  can be smoothly detached from the case  28 . 
     (4) When inserting the convex portion  50  into the hole  36  serving as the concave portion in the case  28  while setting the frame body portion  45   a  of the replacement component  29  to the inclined posture with a lowered front, the opening of the insertion side of the convex portion  50  in the hole  36  can be obtained widely when viewed from the side of the convex portion  50 , and it is easy to insert the convex portion  50  into the hole  36 . Furthermore, after inserting the convex portion  50  into the hole  36 , when turning the frame body portion  45   a  of the replacement component  29  to the horizontal posture from the inclined posture, the convex portion  50  inserted into the hole  36  enters the fitting state of being interposed between the upper inner surface  38  and the lower inner surface  39  of the hole  36 , and thus it is easy to maintain the replacement component  29  in the positioning state. 
     (5) By causing the convex portion  50  of the frame body portion  45   a  of the replacement component  29  to slide on the groove  37 , it is possible to guide the convex portion  50  up to the hole  36  from above. 
     (6) The replacement component  29  is configured so that, when the convex portion  50  is guided up to the hole  36  along the concave groove  37  from above comes into contact with the lower inner surface  39  of the hole  36 , since the convex portion  50  is further guided downward with a lowered front along the chamfered portion  40  with a lowered front formed on the lower inner surface  39  according to gravity, the convex portion  50  is smoothly inserted into the hole  36 , and the mounting work can be rapidly performed. Meanwhile, when detaching the replacement component  29  in the mounted state from the case  28 , at the time of setting the frame body portion  45   a  of the replacement component  29  from the horizontal posture to the inclined posture, since the chamfered portion  40  also serves as a run-off portion permitting the inclined displacement of the convex portion  50 , the detachment work can be smoothly performed. 
     (7) A part of the frame body portion  45   a  of the replacement component  29  is located above the opening portion  28   a  and in the region in which the carriage  16  equipped with the recording head  19  moves, in the case of the incomplete engagement state where the convex portion  50  is not engaged with the hole  36  in the positioning state. For that reason, when the carriage  16  equipped with the recording head  19  moves, not the recording head  19  but the carriage  16  equipped therewith collides with the replacement component  29  mounted in the incomplete engagement state. That is, even when the replacement component  29  is not correctly mounted to the case  28 , the recording head  19  can be prevented from colliding with the replacement component  29  during movement of the carriage  16 , and thus the damage of the recording head  19  can be suppressed. 
     (8) In the replacement component  29  of the state of inserting the convex portion  50  into the hole  36 , when the convex portion  50  is subjected to the rotation displacement from the inclined posture with a lowered front to the horizontal posture so as to be the positioning state within the hole  36 , the hook portion  52  is elastically deformed and is locked to the locking portion  41 , and thus the correct mounted positioning state can be satisfactorily maintained. 
     (9) When the ink is ejected (that is, flushed) toward the case  28  from the nozzles of the recording head  19  in the state of the liquid droplet as the waste ink, the ink is attached into the ink receiving surface  30  of the case  28 . Meanwhile, when the suction pump  27  is driven in the state of setting the cap  22  to the contact position with respect to the recording head  19 , the ink is forcibly discharged from the recording head  19 . Moreover, the forcibly discharged ink is led up to the case  28  via the cap  22  and the liquid supply path and is vigorously discharged toward the ink receiving surface  30  onto which the ink is attached in the case  28  at the discharge pressure due to driving of the suction pump  27 . Thus, it is possible to cause the ink attached onto the ink receiving surface  30  from the ink receiving surface  30  using the flow of the waste ink so as not to be solidified to the aggregated form. 
     (10) The ink discharged toward the ink receiving surface  30  from the waste ink supply tube  25  scrapes off the deposit  60  of ink attached onto the ink receiving surface  30 , when flowing so as to run up the inclined ink receiving surface  30  from below. Moreover, after the ink flows on the ink receiving surface  30  so as to drop down, together with the deposit  60  of ink scrapped off from the ink receiving surface  30  when running up, the ink and the deposit flows out to the waste ink discharge tube  26  from the case  28 . For that reason, it is possible to reduce the risk of the ink attached onto the ink receiving surface  30  in the case  28  from being solidified. 
     (11) It is possible to reduce the quantity of ink remaining on the suction pump  27  side after driving of the suction pump  27  stops, in the ink flowing to the case  28  side from the cap  22  side via the waste ink supply tube  25  along with driving of the suction pump  27 . 
     (12) Since the waste ink, which flows in via the waste ink supply tube  25 , can be discharged via the waste ink discharge tube  26  having the flow path diameter greater than that of the waste ink supply tube  25 , it is possible to reduce the risk of the unnecessary remaining of the waste ink within the case  28 . 
     (13) In a case where the inside of the case  28  formed with the ink receiving surface  30  does not communicate with the atmosphere, when clogging occurs on the downstream side of the waste ink discharge tube  26 , the waste ink may flow backward to the inside of the waste ink supply tube  25  of the upstream side via the case  28  due to the pressure. In this respect, according to the printer  11  of the embodiment, even if clogging occurs on the downstream side of the waste ink discharge tube  26 , since the pressure causing the reverse-flow is opened to the atmosphere by the case  28  communicating with the atmosphere, an occurrence of the reverse-flow can be suppressed. 
     In addition, the above-mentioned embodiment may be modified as follows. 
     In the above-mentioned embodiment, the discharge port  33  and the supply port  34  may not be provided on the same side wall in the case  28 . For example, the supply port  34  may be formed on the front side wall  28   c  on the opposite side to the rear side wall  28   b  formed with the discharge port  33 . 
     In the above-mentioned embodiment, the locking portion  41  of the case  28  may be formed on the inner surface side of the rear side wall  28   b , and the hook portion  52  of the mounting member  45  may be engaged with the locking portion  41  within the opening portion  28   a  of the case  28 . 
     In the above-mentioned embodiment, each one of the hole  36  of the case  28  and the convex portion  50  of the mounting member  45  may be provided, and three or more of them may be provided by. 
     In the above-mentioned embodiment, each one of the rib  31  of the case  28  may be provided, and three or more of them may be provided. However, when providing only one rib  31 , it is preferable that the thickness size of the rib  31  in the transverse direction perpendicular to the longitudinal direction of the replacement component  29  have enough size to be able to suppress the falling-down of the replacement component  29  into the opening portion  28   a  when mounting the replacement component  29  into the opening portion  28   a  of the case  28 . 
     In the above-mentioned embodiment, the chamfered portion  40  formed in the hole  36  of the case  28  may be formed not on an inclined surface but on a circular arc surface, or the chamfered portion  40  may be excluded. 
     In the above-mentioned embodiment, the groove  37  of the case  28  may be excluded. 
     In the above-mentioned embodiment, the concave portion of the case  28 , with which the convex portion  50  of the mounting member  45  is engaged in the positioning state, may be a non-through hole if the convex portion is inserted into or extracted from the concave portion, without being limited to the through-formed hole  36 . 
     In the above-mentioned embodiment, the guide portion formed in the case  28  may be replaced with a beam formed along the mounting direction of the replacement component  29  into the opening portion  28   a  from the inner surface of the side wall of the case  28 . 
     In the above-mentioned embodiment, the cross-sectional shape perpendicular to the projecting direction of the convex portion  50  of the mounting member  45  may not be a rectangular shape. In addition, in this case, there is a need to form the hole  36  of the case  28 , into which the convex portion  50  is inserted, to the shape corresponding to the convex portion  50 . 
     In the above-mentioned embodiment, the rib  31  formed in the case  28  may be configured so that the top portion  32   a  in the upper edge portion  32  is not horizontally provided. 
     In the above-mentioned each embodiment, although the liquid ejecting apparatus has been embodied as the ink jet type printer  11  configured to eject the ink as the fluid, the liquid ejecting apparatus may be embodied as a fluid ejecting device that ejects or discharges other fluids other than ink. It is possible to utilize various liquid ejecting apparatuses that include a liquid ejecting head or the like configured to discharge a minute amount of liquid droplets. In addition, the liquid droplet refers to a liquid state that is discharged from the liquid ejecting apparatus, and also includes one leaving traces in a granular shape, a tear shape, and a filiform shape. Furthermore, liquid described herein may be a material capable of being ejected from the liquid ejecting apparatus. For example, the material may include a state when a substance is a liquid phase, and includes a liquid state having high or low viscosity, sol, gel water, other inorganic solvents, an organic solvent, a solution, a liquid phase resin, a flow regime like a liquid phase metal (a metallic melt), substance in which one phase is a liquid, as well as material in which particles of a functional material formed of solid bodies such as pigment and metallic particles are dissolved, dispersed or mixed into the solvent or the like. Furthermore, as a typical example of liquid, there is ink, liquid crystal, or the like as described in the above-mentioned embodiment. Herein, ink includes various liquid compositions such as a general water-based ink, an oil-based ink, gel ink, and hot-melt ink. As a specific example of the liquid ejecting apparatus, for example, there is a liquid ejecting apparatus which ejects liquid including materials such as an electrode material and a color material that are used in manufacturing a liquid crystal display, an EL (electroluminescence) display, a surface emitting display, and a color filter in the form of dispersion or dissolution. Otherwise, it may be possible to adopt a liquid ejecting apparatus which ejects biological organic matter used in manufacturing a bio chip, a liquid ejecting apparatus which is used as a precision pipette and ejects liquid serving as a sample, a printing device, a micro dispenser or the like. In addition, it may be possible to adopt a liquid ejecting apparatus which pinpoint-ejects lubricant oil to a precision machine such as a watch and a camera, a liquid ejecting apparatus which ejects transparent resin liquid such as an ultraviolet curing resin onto a substrate so as to form a micro hemispherical lens (an optical lens) or the like used in an optical communication element or the like, a liquid ejecting apparatus which ejects etching liquid such as acid or alkali so as to etch a substrate or the like. Furthermore, the invention can be applied to any one kind of these liquid ejecting apparatuses. 
     The entire disclosure of Japanese Patent Application No. 2012-057371, filed Mar. 14, 2012, is expressly incorporated by reference herein.