JP5598317B2 - Capping device and liquid ejecting device - Google Patents

Description

  The present invention relates to a capping device and a liquid ejecting apparatus including the capping device.

  2. Description of the Related Art Conventionally, as a kind of liquid ejecting apparatus, an ink jet printer that performs printing by ejecting ink onto a medium such as paper from a nozzle that is opened on a nozzle forming surface of a liquid ejecting head is widely known.

  In such an ink jet printer, the water and volatile components of the ink staying in the nozzles evaporate and the viscosity of the ink increases, so that the nozzles are clogged and foreign substances such as bubbles and metal particles are mixed in the nozzles. Sometimes. When such clogging or contamination such as foreign matter occurs in the nozzle, it causes printing defects such as a deviation in the ink ejection direction or the inability to eject an appropriate amount of ink from the nozzle.

  Therefore, a cleaning process for cleaning the nozzles is performed in the ink jet printer. For example, a nozzle that causes clogging by bringing the cap opening into contact with the nozzle forming surface and reducing the pressure of the sealed space between the formed cap and the nozzle forming surface by driving a suction pump. The ink inside is sucked into the cap. Then, the sucked ink is discharged to the outside from a waste liquid port provided in the cap via a suction pump. Alternatively, the ink in the nozzle that causes clogging is discharged into the cap by forcibly ejecting the ink from the nozzle. Then, the discharged ink is discharged to the outside from a waste liquid port provided in the cap via a suction pump.

  At this time, an ink absorber may be provided inside the cap so that the ink is stably received in the cap without being scattered. In such a case, ink may remain on the ink absorber after the nozzle cleaning process is executed. Then, when the sealed space is formed in the cleaning process, if the remaining ink is in a thickened state, the thickened ink absorbs moisture from the ink in the nozzle and removes the ink in the nozzle. There is a risk of thickening. Therefore, Patent Document 1 proposes a technique for reducing the amount of ink remaining in the cap with an ink absorber using a dense absorber on the side of the waste liquid port.

JP-A-10-175306

  By the way, since the proposal technique of patent document 1 uses a sparse ink absorber, there exists a possibility that the ink absorption amount which can be received in an ink absorber may reduce. Therefore, it is effective to increase the ink absorption amount of the ink absorber without using a sparse ink absorber, that is, to increase the ink reception amount in the cap. As one of the methods, it is effective to deepen the bottom of the cap further away from the opening. This is because the opening area of the cap is limited in accordance with the nozzle forming surface with which the cap abuts.

  Now, when the bottom of the cap is deepened in this way, the height of the annular side wall formed between the opening and the bottom, that is, the base end on the bottom side and the dimension to the tip that is also the opening are become longer. For this reason, when the cap is manufactured by a molding process, an inward-falling phenomenon may occur in which the front end portions (openings) of the side walls are tilted so as to approach each other for manufacturing reasons. For this reason, unfavorable deformation occurs such as the shape of the opening is distorted or the area of the opening is reduced. As a countermeasure against this, there is a method of forming a rib standing at a predetermined height at the bottom so as to connect the side walls where the tip portion is liable to fall. In this case, since the rib is formed on the bottom side, the tipping portion can be prevented from falling down without reducing the area of the opening.

  However, when a rib connecting the side walls is formed at the bottom of the cap, the cap is divided into two regions on the bottom side. For this reason, it becomes necessary to provide a waste liquid port for each of the two regions, and there is a problem that the structure of the cap becomes complicated.

  The present invention has been made to solve the above-mentioned problems, and has as its main object to realize a capping device that suppresses an increase in the number of waste liquid ports in a capping device having a cap having a rib formed at the bottom. . Furthermore, it aims at providing the liquid ejecting apparatus provided with this capping apparatus.

In order to achieve the above object, a capping device of the present invention is a capping device having a bottomed box-shaped cap having an opening at one end of a ring-shaped side wall and a bottom at the other end. At the bottom, a waste liquid outlet for discharging the liquid flowing in from the opening,
A rib extending so as to connect between two opposing wall surfaces of the side wall is formed at a position where at least a part of the waste liquid port overlaps with the opening when viewed from the opening side, and the rib is formed on the rib. Is provided with a communication hole that penetrates in the width direction intersecting with the extending direction of the rib and communicates with the waste liquid port.

  According to this configuration, since the liquid that has flowed in can be discharged from both sides of the rib to the waste liquid port via the communication hole, the liquid that has flowed into the two spaces separated by one rib in the cap It can be discharged at the waste liquid port. Therefore, the configuration related to the liquid waste liquid is simplified. Moreover, since the side walls are connected by ribs, it is possible to suppress the internal falling phenomenon of the side walls during the molding process.

In the capping device of the present invention, the waste liquid port is at least larger than the widthwise dimension of the rib or has the same diameter.
According to this configuration, the communication hole can be easily formed together with the waste liquid port by molding at a position overlapping the rib in a plan view and on the bottom side of the rib.

The capping device of the present invention includes a liquid absorber that is accommodated in the cap and has a slit formed at a position corresponding to the rib.
According to this structure, the accommodation position in the longitudinal direction of the liquid absorber in the cap is determined by inserting the rib into the slit. Therefore, since the liquid absorber can be inserted and arranged at an appropriate position in the cap by the slit, the probability that the liquid can be discharged to the waste liquid port is increased.

In the capping device of the present invention, the slit is provided with a width dimension of the slit equal to or less than a width dimension of the rib.
According to this configuration, when the liquid absorber is inserted into the cap, even if there is a displacement between the slit and the rib, the probability that the rib is positioned within the width of the slit is increased. The body can be correctly inserted into the cap. In addition, since the rib is inserted into the slit, the liquid absorber is brought into contact with the rib in a compressed state on both sides in the width direction even after the insertion, so that the position after the insertion is stably maintained.

In the capping device of the present invention, the liquid absorber is provided with a cut shape portion cut into a triangular shape at an end of the slit on the cut start side.
According to this configuration, when the liquid absorber is inserted into the cap, even if a positional deviation occurs between the slit and the rib, the probability that the rib is located within the width of the cut shape portion of the slit increases. The liquid absorber can be correctly inserted into the cap.

  In the capping device of the present invention, the liquid absorber is provided with a rectangular cut shape portion having a width dimension equal to or larger than the width dimension of the rib at an end portion on the cut end side of the slit.

  For example, when the liquid absorber is inserted into the cap, if there is a displacement between the slit and the rib, the rib is once pushed into the opening side to deform the liquid absorber. Therefore, according to this configuration, since the pushed-in rib is positioned within the width of the slit-shaped portion of the slit, the probability of releasing the deformation of the liquid absorber is increased, so that the liquid absorber is correctly inserted into the cap. be able to.

  In the capping device of the present invention, the bottom portion includes a second bottom portion having a portion farthest from the opening portion, and a first bottom portion formed at a portion closer to the opening portion than the second bottom portion, The rib is formed in a portion farthest from the opening in the second bottom portion.

  According to this configuration, by providing the second bottom portion that is deeper than the first bottom portion, the amount of liquid flowing into the cap can be increased, and the rib can be extended at a portion farthest from the opening portion. Thus, the inward tilting of the side wall can be suppressed from the base end side. Further, the liquid flowing into the second bottom portion can be reliably guided to the waste liquid port formed at the position where the rib is extended and discharged.

  In the capping device of the present invention, the second bottom portion is formed between the two first bottom portions formed apart from each other, and the second bottom portion and the two first bottom portions are provided with the first bottom portion. The slopes are formed so that the distance between the two bottoms becomes narrower.

  According to this configuration, for example, when the liquid absorber is inserted into the second bottom portion, the liquid absorber is moved toward the center of the second bottom portion by the respective inclined surfaces. Therefore, since the liquid absorber can be brought close to the waste liquid port formed at the position where the rib is extended, the probability that the liquid can be discharged increases.

The liquid ejecting apparatus of the present invention includes a liquid ejecting head that ejects a liquid onto a medium, and the capping device having the above-described configuration.
According to this configuration, since the liquid flowing into the bottom side divided into two spaces by one rib in the cap can be discharged at one waste liquid port, the structure related to the liquid waste liquid has been simplified. A liquid ejecting apparatus is obtained.

1 is a perspective view showing a schematic configuration of a printer having a capping device according to an embodiment of the present invention. The functional block diagram of the maintenance mechanism which has the capping apparatus of embodiment. It is a figure which shows the cap of embodiment, (a) is a perspective view, (b) is a top view. (A) is a sectional view taken along line 4a-4a in FIG. 3 (a), (b) is a sectional view taken along line 4b-4b in FIG. 3 (b), and (c) is 4c- in FIG. 3 (b). 4c arrow sectional drawing. (A) is a plan view of the liquid absorber of the embodiment, (b) is a side view of the liquid absorber, (c) is a cut end view showing a state in which the liquid absorber is being inserted into the cap, (d) ) Is a cut end view showing a state where the liquid absorber is inserted into the cap. (A) is sectional drawing which shows the shape of the cap of a modification, (b) is a cut end view which shows the state in which the liquid absorber of embodiment is in the middle of insertion in the cap of a modification, (c) is the liquid absorber The end elevation which shows the state which was inserted in the cap. (A) is a side view which shows the shape of the liquid absorber of a 1st modification, (b) is a cut end view which shows the state by which the liquid absorber of the 1st modification was inserted in the cap of a modification. (A) is a side view showing the shape of the liquid absorbent body of the second modified example, (b) is a cut end view showing a state where the liquid absorbent body of the second modified example is being inserted into the cap of the embodiment, (c) ) Is a cut end view showing a state in which the liquid absorbent body of the second modified example is inserted into the cap of the embodiment. (A) is a side view showing the shape of the liquid absorber of the third modification, (b) is a side view showing the shape of the liquid absorber of the fourth modification, and (c) is the liquid absorber of the fourth modification. (D) is the bottom view which looked at the liquid absorber of the 5th modification from the bottom.

  An embodiment in which the present invention is embodied in an ink jet printer which is a kind of liquid ejecting apparatus including a head maintenance mechanism will be described below with reference to the drawings. In order to facilitate the following description, as shown in FIG. 1, the gravity direction in the vertical direction is defined as the downward direction, and the antigravity direction is defined as the upward direction. In addition, the direction in which the paper P fed to the printer is transported when the image is formed is defined as a forward direction, and the direction opposite to the transport direction is defined as a backward direction. Further, the direction in which the carriage 16 reciprocates, that is, the scanning direction, which intersects both the gravity direction and the conveyance direction, will be referred to as the right direction and the left direction, respectively, when viewed from the front.

  As shown in FIG. 1, an ink jet printer 11 (hereinafter also simply referred to as “printer 11”) includes a frame 12 having a substantially rectangular box shape. The support base 13 is extended along a certain left-right direction. A paper feed motor 14 is provided at the lower part of the rear surface of the frame 12. The paper P is fed from the rear side onto the support table 13 by a paper feed mechanism (not shown) through the driving of the paper feed motor 14.

  A guide shaft 15 is installed above the support base 13 in the frame 12 along the left-right direction which is the longitudinal direction of the support base 13. A carriage 16 is supported on the guide shaft 15 so as to be reciprocally movable in the axial direction. Specifically, a support hole 16a penetrating the carriage 16 in the left-right direction is formed, and a guide shaft 15 is inserted into the support hole 16a.

  A driving pulley 17a and a driven pulley 17b are rotatably supported at positions in the vicinity of both ends of the guide shaft 15 on the inner surface of the rear wall of the frame 12. An output shaft of the carriage motor 18 is connected to the drive pulley 17a, and an endless timing belt 17 partially connected to the carriage 16 is wound between the drive pulley 17a and the driven pulley 17b. . The printer 11 has a structure capable of reciprocating in the left-right direction while driving the carriage 16 through the timing belt 17 while being guided by the guide shaft 15 by driving the carriage motor 18.

  A liquid jet head 19 is provided on the lower surface of the carriage 16. The liquid ejecting head 19 is provided with a plurality of ink ejecting nozzles 20 (see FIG. 2). A nozzle plate 19 a is attached to the lower end of the liquid ejecting head 19. In the nozzle plate 19a, an opening hole for each nozzle 20 is formed. On the other hand, an ink cartridge 22 for supplying ink to the liquid ejecting head 19 is detachably mounted on the carriage 16.

  In the printer 11, a pressure generating mechanism 21 (see FIG. 2) having, for example, a piezoelectric element is provided in the liquid ejecting head 19. By driving the pressure generating mechanism 21, the ink in the ink cartridge 22 is supplied into the liquid ejecting head 19 and is supplied onto the support base 13 from each nozzle 20 (see FIG. 2) of the liquid ejecting head 19. Printing is performed such that it is ejected onto the printed paper P.

  A maintenance mechanism 23 for performing maintenance such as cleaning of the liquid ejecting head 19 is provided in an area on the right side of the support base 13 inside the frame 12, that is, an area not used during printing (home position area). It has been. In the printer 11, a process (cleaning process) for cleaning the liquid ejecting head 19 (nozzle 20) by periodically moving the liquid ejecting head 19 to the home position region and operating the maintenance mechanism 23 is executed.

  Next, an outline of the maintenance mechanism 23 will be described with reference to FIG. As shown in FIG. 2, the maintenance mechanism 23 has a capping device 30 including a cap 31 and an ink absorber 50 as a liquid absorber.

  The cap 31 is made of a resin-made cap body 32 having a bottomed box shape, and a softer material (rubber material or elastomer) than the cap body 32 in an opening on the upper side of the cap body 32 that contacts the liquid jet head 19. Etc.) and a cap seal portion 35 formed in a square ring shape. The ink absorber 50 is formed of a porous material that absorbs ink, and is inserted into the internal space of the cap 31.

  The cap body 32 is formed so as to form a pair of front and rear short side walls 33 formed in a symmetrical step shape when viewed from the left and right direction and a vertical flat plate shape parallel to the left and right direction. The pair of left and right long side walls 34 extending in the longitudinal direction and the short side wall 33 and the bottom wall 32 a connecting the lower end edges of the long side wall 34 are configured. The cap 31 is formed by the short side wall 33, the long side wall 34, and the bottom wall 32a formed in an annular shape so as to surround the opening portion, and the first space 41 is further formed below the opening portion inside the cap 31. Below that, the second space 42 is formed in a stacked state. In the present embodiment, the second space 42 has a shape that is uniformly narrower in the front-rear direction than the first space 41, and is located at the approximate center in the front-rear direction with respect to the first space 41. Is formed.

  The bottom wall 32 a of the cap body 32 is formed with a cylindrical drainage portion 36 that protrudes downward at a portion that is the lowest on the lower side of the second space 42. The drainage part 36 is formed with a waste liquid port 36a that penetrates the inside of the draining part 36 in the vertical direction to connect the inside of the second space 42 to the outside. Further, the drainage part 36 is connected to the waste ink tank 25 via the discharge tube 24. A suction pump 26 for sucking ink (or air) in the cap 31 and discharging it into the waste ink tank 25 is provided in the middle of the discharge tube 24. The waste ink tank 25 contains a waste ink absorber 27 that absorbs and holds ink.

  In addition, the cap body 32 has a lower portion of the first space 41 (specifically, the rear end side) located on one side in the front-rear direction (the rear end side in FIG. 2) of the second space 42. At the horizontal portion of the long side wall 34, a cylindrical intake portion 37 protruding downward is formed. The intake portion 37 is formed with an intake port 37a that communicates with the first space 41 by penetrating the inside thereof in the vertical direction. The intake portion 37 is connected to an intake tube 38 provided with an air release valve 39 in the middle, and the first space 41 (and thus the second space 42) connects the intake tube 38 by the opening operation of the air release valve 39. By communicating with the atmosphere via the cap 31, the inside of the cap 31 is opened to the atmosphere.

  In the maintenance mechanism 23, the cap 31 is positioned so that the opening of the cap 31 faces the lower surface of the nozzle plate 19a of the liquid ejecting head 19 with a slight distance when the liquid ejecting head 19 moves to the home position region. It is arranged like this. The cap 31 is lifted upward by an elevating mechanism (not shown) provided in the maintenance mechanism 23, and the liquid is ejected so that the cap seal portion 35 formed in the opening surrounds the opening hole of each nozzle 20. The head 19 is in contact with the capping.

  When the suction pump 26 is driven in this contact state, the fluid (air) in the cap 31 is sucked so that the pressure in the space defined by the lower surface of the nozzle plate 19a and the cap 31 decreases (decompresses). become. For this reason, the ink in each nozzle 20 is sucked and discharged into the cap 31 by the negative pressure (pressure lower than atmospheric pressure) generated accordingly. Further, the ink in the cap 31 is discharged into the waste ink tank 25 through the waste liquid port 36 a and the discharge tube 24. By forcibly discharging the ink in the nozzle 20 in this way, the cleaning process for the nozzle 20 is performed.

  Of course, during this cleaning process, the air release valve 39 is closed, and after the cleaning process is completed, the air release valve 39 is opened and the space in the cap 31 becomes equal to the atmospheric pressure. As a result, the cap 31 can be easily lowered and separated from the liquid jet head 19.

  Although not described in the present embodiment, the maintenance mechanism 23 includes, for example, a mechanism for wiping unnecessary ink attached to the nozzle plate 19a, a liquid receiving container for receiving ink that is forcibly ejected from the nozzle, and the like. Are provided as needed.

  The capping device 30 provided in the maintenance mechanism 23 includes the second space 42 below the first space 41 as described above, and has only one waste liquid port 36a in the second space 42. That is, in the present embodiment, by providing the second space 42 below the first space 41, the amount of ink absorbed is increased, and by using one waste liquid port, the conventional problem described above is solved. A capping device 30 is configured. Hereinafter, the cap 31 and the ink absorber 50 constituting the capping device 30 of the present embodiment will be specifically described with reference to FIGS.

  The cap 31 of the present embodiment has a length in the longitudinal direction (front-rear direction) as shown in FIG. 3A when the cap 31 is viewed from an oblique direction and FIG. 3B when the cap 31 is viewed from above. Two substantially rectangular parallelepiped shapes of different sizes are overlapped in the vertical direction.

  Now, in the cap main body 32, the pair of front and rear short side walls 33 includes a vertical wall surface in which the inner surface side of the cap 31 is separated in two front and rear directions, a lower end of one of the two vertical wall surfaces, and the other of the two vertical wall surfaces. It is formed so as to form a staircase shape with a horizontal floor surface connecting between the upper ends of the vertical wall surfaces. Further, the pair of left and right long side walls 34 are formed so that the inner surface side of the cap 31 in each of them is a vertical wall surface having a substantially T shape when viewed from the left and right directions. And the bottom wall 32a from which the drainage part 36 protruded is formed so as to form a rectangular shape in plan view.

  Furthermore, in the present embodiment, the square annular cap seal portion 35 is provided at the upper end portion of the cap body 32 as described above. The cap seal portion 35 includes a long wall portion 35b (see FIG. 4B) that hangs in the cap body 32 along the longitudinal direction of the cap body 32, and a cap body that extends along the short direction of the cap body 32. 32 has a short wall portion 35c (see FIG. 4A) that hangs down inside. The long hanging wall portion 35 b is formed to be in close contact with the inner surface of the long side wall 34, and the short hanging wall portion 35 c is formed to be in close contact with the inner surface of the short side wall 33. Incidentally, in the present embodiment, the cap seal portion 35 is formed by so-called two-color molding in which the cap body 32 is molded as the primary side and then molded as the secondary side.

  As a result, the cap 31 has a rectangular shape having a length dimension L1 in the longitudinal direction and a width dimension W1 in the lateral direction by the pair of left and right long wall portions 35b and the pair of front and rear short wall portions 35c in the cap seal portion 35. An opening is formed. In addition, a length dimension L1 on the opening side inside the cap 31 by the pair of left and right long wall portions 35b, the pair of front and rear short wall portions 35c, and the horizontal floor surfaces of the pair of front and rear short side walls 33, A first space 41 having a width dimension W1 is formed. In addition, since the horizontal floor surface of the short side wall 33 becomes the bottom part of the 1st space 41, this is called the 1st bottom part 41B (refer FIG. 3).

  Further, below the first space 41, the lower vertical wall surface 42 c of the short side wall 33, the inner wall surface 34 b of the long side wall 34, and the inner surface of the bottom wall 32 a are more longitudinal than the first space 41. A second space 42 in which the space is uniformly narrowed is formed. Therefore, since the inner surface of the bottom wall 32a of the cap body 32 becomes the bottom of the second space, this is referred to as a second bottom 42B (see FIG. 3). In the present embodiment, the second space 42 has a length dimension L2 that is approximately half the length dimension L1 of the first space 41 in the front-rear direction, and a width dimension W1 that is the same as the first space 41 in the left-right direction. Has been.

  Now, in the cap 31 of the present embodiment, the rib 40 is erected in the up-down direction at a substantially central portion in the front-rear direction of the second bottom portion 42B, and extends in the short direction, that is, the left-right direction intersecting the longitudinal direction. Has been. That is, the rib 40 is formed so as to connect between two portions on the inner surfaces of the pair of long side walls 34, that is, between the two inner wall surfaces 34b opposed in the left-right direction. Therefore, the second space 42 is divided into two space regions in the front-rear direction by the rib 40. A waste liquid port 36 a is formed in the bottom wall 32 a of the cap body 32 so as to overlap the rib 40 in a plan view. In other words, the rib 40 is disposed so as to overlap the waste liquid port 36a in plan view when viewed from the opening side. The rib 40 opens and penetrates on both side surfaces in the width direction (front-rear direction) intersecting with the extending direction of the rib 40, and each of the second spaces 42 divided into two regions by the rib 40 and waste liquid. A communication hole 46 that communicates with the port 36a is provided. The intake port 37a is provided so as to open at the first bottom portion 41B on one side (the rear side in the present embodiment).

Next, a specific shape of the rib 40 will be described with reference to FIGS. 4 (a), 4 (b), and 4 (c).
As shown in FIGS. 4A, 4B, and 4C, in the present embodiment, the cap 31 is located below the opening end 35a of the opening that is the upper end of the cap seal portion 35 at the approximate center portion of the second bottom portion 42B. It has a part farthest from the maximum dimension D2 in the direction, that is, the farthest farthest part 42b. In order to make it easier for ink to flow toward the farthest portion 42b, a slope portion 42a is formed on the second bottom portion 42B. With respect to the second bottom portion 42B in which the farthest portion 42b and the slope portion 42a are formed, the lower vertical wall surface 42c of the pair of front and rear short side walls 33 and the inner wall surface 34b of the pair of left and right long side walls 34 are respectively The second space 42 is formed by continuously forming an annular shape.

  As a result, a plate-like portion having a length of approximately the maximum dimension D2 in the vertical direction is formed on the long side wall 34 in the central portion of the second space 42 in the front-rear direction. For this reason, when the cap body 32 is manufactured by, for example, molding, as shown by the broken arrow T in FIG. 4B, the upper end side of the long side wall 34 existing at the position of the farthest portion 42b in the front-rear direction is molded. An inward fall phenomenon that falls later inward tends to occur.

  Therefore, in the present embodiment, the rib 40 having a predetermined width in the front-rear direction is formed with a height dimension H2 upward from the farthest portion 42b of the second bottom portion 42B. The height dimension H2 of the rib 40 is in a range in which the ink absorber 50 inserted into the cap 31 is not divided into two bodies, and is set to an optimum dimension capable of suppressing the inward phenomenon of the long side wall 34. In the present embodiment, the height dimension H2 is the same as the formation height of the first bottom portion 41B that is spaced downward by a distance D1 from the opening end 35a.

  As shown in FIGS. 4B and 4C, the rib 40 is open on both side surfaces in the front-rear direction of the rib 40 on the second bottom portion 42B side and at substantially the center portion in the left-right direction. A communicating hole 46 is formed. There is a waste liquid port 36a below the communication hole 46, and the communication hole 46 and the waste liquid port 36a are in a state of communicating with each other because their penetrating spaces are continuously adjacent to each other. In other words, the communication hole 46 is a space portion disposed between the rib 40 and the waste liquid port 36a. The communication hole 46 is formed with a height dimension H1 upward from the farthest part 42b. In the present embodiment, the height dimension H <b> 1 of the communication hole 46 is approximately half the height dimension H <b> 2 of the rib 40. The height dimension H1 is set to an optimum height dimension so that the ink absorber 50 inserted into the cap 31 is reliably inserted into the cap 31 at the portion where the ink absorber 50 is inserted into the second space 42. Yes. Therefore, the height dimension H1 of the communication hole 46 is not necessarily half the height dimension H2 of the rib 40, and may be a height above or below it. Also good.

  Further, in the present embodiment, the width dimension Wr in the front-rear direction of the rib 40 and the width dimension Wf in the left-right direction of the communication hole 46 at the height dimension H1 on the upper end side of the communication hole 46 are formed with the same dimension. ing. Further, the width dimension of the rib 40 in the left-right direction is the same as the gap between the inner wall surfaces 34b of the long side wall 34. In the present embodiment, the width dimension is the same as the gap between the long wall parts 35b of the cap seal portion 35. W1 is formed.

  On the other hand, the waste liquid port 36 a is formed with a width dimension We having the same diameter in the front-rear direction and the left-right direction at the farthest portion 42 b communicating with the communication hole 46. Although detailed explanation is omitted here, based on the mold structure for forming the rib 40 and the waste liquid port 36a, the width dimension We is at least in the front-rear direction in which the molds come into contact with each other and rub against each other. The rib 40 is set to at least the same dimension (preferably larger than the width dimension Wr) as the width dimension Wr in the front-rear direction.

  Next, the ink absorber 50 inserted into the cap 31 will be described with reference to FIG. As shown in FIG. 5A, the ink absorber 50 is integrally formed continuously below the first absorber 51 inserted into the first space 41 and below the first absorber 51, and the second space 42. And a second absorption part 52 to be inserted.

  The first absorption part 51 has a length dimension L1, a width dimension W1, or a dimension smaller than this, and can be inserted into the first space 41. Moreover, the dimension of an up-down direction is set so that the upper surface may be in a position slightly lowered from the opening end 35a in a state of being inserted into the first space 41, and the whole has a rectangular parallelepiped shape.

  On the other hand, the second absorption part 52 has a length dimension L1 in the front-rear direction of the second space 42 in the front-rear direction or a dimension smaller than this, and the same width as the first absorption part 51 in the left-right direction (the front and back direction on the paper surface). It has a size and can be inserted into the second space 42. The second absorbing portion 52 is formed with a slit 53 at a position (here, the central portion) that engages with the rib 40 when inserted into the second space 42. Further, a cut surface 54 and a cut surface 55 that are cut obliquely on both sides in the front-rear direction are formed on the lower end side of the slit 53, that is, on the end portion on the cutting start side of the slit 53. These cut surfaces 54 and 55 form a cut shape portion in which the member of the absorber is cut into a triangular shape on the lower end side of the slit 53.

  In this embodiment, when the ink absorber 50 is inserted into the cap 31, the slit 53 is provided below the ink absorber 50 so that the rib 40 having the height H2 can be completely inserted without stopping during the insertion. A notch is formed with a height dimension H3 upward from the end face. Of course, the height dimension H3 is a dimension in a range that does not divide the ink absorber 50 (the first absorbing portion 51). Further, when the ink absorber 50 is inserted into the cap 31, the triangular shape of the cut shape portion is provided so that the rib 40 is securely inserted into the slit 53 by abutting the rib 40 on the cut surface 54 or the cut surface 55. A width portion corresponding to the bottom of the shape is formed with a width Wk wider than the width Wr of the rib 40.

Next, the operation when the thus formed ink absorber 50 is inserted into the cap 31 will be described with reference to FIGS.
As shown in FIG. 5B, when the ink absorber 50 is inserted into the cap 31 from above, the first absorber 51 when the second absorber 52 starts to be inserted into the second space 42. Is not completely inserted in the first space 41. Accordingly, the second absorbing portion 52 is likely to be displaced from the second space 42 in the front-rear direction. Even when the first absorption portion 51 is inserted into the first space 41, the second absorption portion 52 is deformed by the deformation of the first absorption portion 51, the gap between the first absorption portion 51 and the cap 31, or the like. Is displaced from the second space 42 in the front-rear direction.

  Therefore, when such a positional shift occurs, when the ink absorber 50 is inserted into the cap 31, as shown in FIG. 5B, the cut surface 54 formed at the lower end of the second absorbent portion 52 and the cut surface are cut. Any of the surfaces 55 comes into contact with the rib 40. As the ink absorber 50 is inserted, the rib 40 slides on the cut surfaces 54 and 55, so that the ink absorber 50 engages the ribs 40 while moving in the front-rear direction.

  Thereafter, as shown in FIG. 5C, in a state where the slit 53 is correctly engaged with the rib 40 and the ink absorber 50 is pushed into the cap 31 and the insertion is completed, In the portion where the rib 40 is inserted, an urging force F1 accompanying the compression in the front-rear direction is generated. The ink absorber 50 is stably held in the cap 31 by the urging force F1.

According to the embodiment described above, the following effects can be obtained.
(1) Since the ink that has flowed into the cap 31 can be discharged from both sides of the rib 40 to the waste liquid port 36a through the communication hole 46, the first space divided into two spaces by the single rib 40 in the cap 31. The ink that has flowed into the two spaces 42 can be discharged through one waste liquid port 36a. Therefore, the configuration relating to the ink waste liquid is simplified.

(2) The waste liquid port 36a can be easily formed on the second bottom portion 42B side of the rib 40 by a molding process at a position overlapping the rib 40 in a plan view.
(3) By extending the ribs 40 in the short direction, the ribs 40 connect the inner wall surfaces 34b of the long side walls 34 in the longitudinal direction, so that the long side walls 34 can be prevented from falling down during the molding process.

  (4) By providing the second bottom portion 42B deeper than the first bottom portion 41B, the amount of ink flowing into the cap 31 can be increased, and the rib 40 is provided at the farthest portion 42b farthest from the opening end 35a. By extending the inner wall 34, it is possible to prevent the long side wall 34 from falling down. Further, the ink flowing into the second bottom portion 42B can be reliably guided to the waste liquid port 36a formed at the position where the rib 40 is extended and discharged.

  (5) By inserting the rib 40 into the slit 53, the position of the ink absorber 50 in the cap 31 in the longitudinal direction (front-rear direction) is determined. Accordingly, since the ink absorber 50 can be inserted into the cap 31 at an appropriate position by the slit 53, the probability that the ink can be discharged to the waste liquid port 36a is increased. In addition, since the ink absorber 50 is in contact with the slit 53 while receiving the urging force F1 on both sides in the width direction of the rib 40 even after insertion, the position after insertion is also stable.

  (6) When the ink absorber 50 is inserted into the cap 31, the width of the cut-shaped portion where the rib 40 is triangular due to the cut surfaces 54 and 55 even if there is a displacement between the slit 53 and the rib 40. Since the probability of being located in Wk is increased, the ink absorber 50 can be correctly inserted into the cap 31.

In addition, you may change each said embodiment into another embodiment as follows.
In each of the above embodiments, as shown in FIG. 5C, in the state where the ink absorber 50 is inserted into the cap 31, the slit 53 is expanded in the front-rear direction, so that the direction opposite to the urging force F1, that is, The urging force F2 is generated in a direction in which the triangular cut shape portion is to be expanded. For this reason, the 2nd absorption part 52 may be displaced in the direction which leaves | separates from the waste-liquid port 36a. In such a case, the ink that has been absorbed by the first absorption part 51 and then moved to the second absorption part 52 cannot be easily introduced into the waste liquid port 36a.

  Therefore, in the cap 31, the vertical wall surface 42c (see FIG. 4A) formed between the second bottom portion 42B and the first bottom portion 41B is narrowed toward the second bottom portion 42B side. Each of them may form a slope. This modification will be described with reference to FIGS. 6 (a), 6 (b), and 6 (c).

  As shown in FIG. 6 (a), the cap 31A of the present modification has a pair of front and rear wall surfaces 42d forming the second space 42 and has a lower slope from the first bottom portion 41B toward the second bottom portion 42B. It is formed with an inclined surface inclined at an angle α with respect to the vertical direction so that the distance between the two becomes narrower toward the side.

  The operation that occurs in the ink absorber 50 when the ink absorber 50 is inserted into the cap 31A formed in this way will be described. That is, as shown in FIG. 6B, when the ink absorber 50 is inserted into the cap 31A from above, the second absorber 52 is inserted into the second space 42 toward the second bottom portion 42B. Start. At this time, as described above, the slit 53 is aligned with the rib 40 in the front-rear direction by the cut shape portion of the cut surface 54 and the cut surface 55 formed at the lower end of the second absorption portion 52. At the same time, both end portions of the second absorption portion 52 in the front-rear direction come into contact with the respective wall surfaces 42d that are inclined. By this contact, the second absorption part 52 receives the urging force F3 in the direction in which the slit 53 is formed.

  Thereafter, as shown in FIG. 6C, when the rib 40 is inserted into the slit 53 and the ink absorber 50 is completely inserted into the cap 31A, the cut surfaces 54 and 55 of the ink absorber 50 are removed. An urging force F4 is generated to approach the waste liquid port 36a. That is, in a state where the rib 40 is inserted, the urging force F4 generated by the wall surface 42d is pushed to the slit 53 side (the waste liquid port 36a side) by the urging force F3, whereby the urging force F4 is applied to the cut surfaces 54 and 55. It occurs.

According to this modification, in addition to the effects (1) to (6) according to the above embodiment, the following effects can be obtained.
(7) When the second absorption portion 52 of the ink absorber 50 is inserted toward the second bottom portion 42B of the cap 31A, the ink absorber 50 is formed by the respective wall surfaces 42d formed in the front-rear direction of the second bottom portion 42B. 2 It will be brought to the center direction of the bottom part 42B, ie, the waste-liquid port 36a side. Therefore, since the ink absorber 50 can be brought closer to the waste liquid port 36a formed at the position where the rib 40 is extended, the probability that the ink can be discharged is increased.

  In the above embodiment, the slit 53 of the ink absorber 50 may be provided with a gap having a slit width dimension equal to or smaller than the width dimension Wr of the rib 40. This modification will be described with reference to FIGS. 7 (a) and 7 (b).

  As shown in FIG. 7A, in the ink absorber 50a of the present modification, a slit 53a having a width dimension Ws in the front-rear direction and a height dimension H4 from the lower surface is formed in the second absorber 52. . The width dimension Ws of the slit 53a can be set within a range equal to or less than the width dimension Wr of the rib 40 so that the slit 53a can be easily engaged with the rib 40 when the second absorbent portion 52 is inserted into the second space 42. Only large dimensions are formed. Also, the height dimension H4 of the slit 53a is formed such that when the ink absorber 50a is inserted into the cap 31 (31A), the rib 40 having the height dimension H2 can be completely inserted without stopping during the insertion. Has been. Incidentally, in this modification, the width dimension Ws of the slit 53a is the same dimension as the width dimension Wr of the rib 40, and the height dimension H4 is the same dimension as the height dimension H3 of the slit 53 of the above embodiment.

  When the ink absorber 50a in which the slit 53a having such a width dimension Ws (Wr) is formed is inserted into the cap 31A of the modified example, the second absorber 52 approaches the waste liquid port 36a, and The inserted state is stably maintained. This operation will be described with reference to FIG.

  As shown in FIG. 7B, in the state where the rib 40 is inserted into the slit 53a and the ink absorber 50a has completed the insertion into the cap 31A, the gap between the slits 53a of the ink absorber 50 is narrowed to the second. An urging force F6 is generated to bring the absorbing portion 52 closer to the waste liquid port 36a. That is, in a state where the rib 40 is inserted, the urging force F6 is generated when the second absorbing portion 52 is pushed toward the slit 53a by the urging force F5 generated by the wall surface 42d. As a result, the urging force F6 acts on the inserted rib 40 from both sides in the front-rear direction, so that the slit 53a is formed in the portion of the second absorption portion 52 facing the communication hole 46 formed on the lower side of the rib 40. Will be narrowed.

According to this modification, in addition to the effects (1) to (6) according to the above embodiment and the effect (7) according to the above modification, the following effects can be obtained.
(8) When the ink absorber 50a is inserted into the cap 31, even if a positional deviation occurs between the slit 53a and the rib 40, the probability that the rib 40 is located within the width of the slit 53a increases. The ink absorber 50a can be correctly inserted into the cap 31. Further, when the ink absorber 50a is inserted into the cap 31A, the slits 53a of the ink absorber 50a are urged and abutted on both sides in the width direction of the rib 40 after being inserted, and there is a gap below the rib 40. Since it becomes narrow, the insertion state is stably maintained.

  In the above modification, for example, when the width dimension Ws of the slit 53a is smaller than the width dimension Wr of the rib 40, the slit 53a may not be correctly inserted into the rib 40. Therefore, as a further modification of the above-described modification, in the ink absorber 50a, a rectangular cut shape portion having a width dimension in the front-rear direction at least the width dimension Wr of the rib 40 is provided at the upper end of the slit 53a. It is good also as a liquid absorber provided. This modification will be described with reference to FIGS. 8 (a), (b), and (c).

  As shown in FIG. 8A, the ink absorber 50b of the present modification includes a slit portion having a width dimension Ws in the front-rear direction and a height dimension H5 from the lower surface, and a height from the lower surface in the width dimension Wh in the front-rear direction. A slit 53b having a wide back side formed by a slit portion having a length H6 is formed in the second absorption portion 52. That is, the second absorption portion 52 is formed with L-shaped portions 56 and 57 having a width dimension Ws and a height dimension H5 on the lower end side, and the gap has a width dimension Wh and a height dimension H6. A rectangular cut-shaped portion having each dimension with a difference height from the dimension H5 is formed on the upper side.

  In this modification, the width dimension Wh of the slit 53b serving as a rectangular cut shape portion is set so that the rib 40 does not engage with the slit 53b in the vertical direction when the second absorption portion 52 is inserted into the second space 42. At least the width dimension Wr of the rib 40 is formed. The height dimension H6 of the upper end of the slit 53b is a height dimension at which the rib 40 having the height dimension H2 can be inserted without contacting in the vertical direction when the ink absorber 50b is inserted into the cap 31 (31A). Is formed.

  In the present embodiment, the height dimension H5 of the shape portions 56 and 57 is the dimension below the height dimension H1 of the communication hole 46 formed in the rib 40, as shown in FIG. Further, the width dimension Wh of the slit 53b is set to be larger than the width dimension Wr of the rib 40 by a dimension corresponding to the dimension variation associated with the formation of the rib 40 and the slit 53b. Of course, as the width dimension Wh is increased and the height dimension H5 of the shape portions 56 and 57 is decreased, the rib 40 is more easily inserted, but the volume of the ink absorber 50 is reduced. The dimension Wh is preferably as small as possible, and the height dimension H5 is preferably as large as possible.

  The ink absorber 50b in which the slits 53b are formed in this way has the second absorbent portion 52 in the second absorption section 52 even if the slit 53b and the rib 40 are misaligned during insertion into the cap 31 of the above embodiment. It is appropriately inserted into the space 42. This effect will be described with reference to FIGS.

  In this modification, it is assumed that the ink absorber 50b is inserted in the cap 31 while being shifted backward. Then, as shown in FIG. 8B, the shape portion 57 formed on the front side on the lower end side of the second absorption portion 52 comes into contact with the rib 40 in the vertical direction. For this reason, the shape portion 57 is crushed upward by the rib 40 and deformed, and in cooperation with the shape portion 56, the ink absorber 50b is moved so that the slit 53b can be correctly inserted into the rib 40. Let

  Thereafter, as shown in FIG. 8C, when the ink absorber 50b is pushed into the cap 31 and the insertion is completed, the rib 40 is positioned within the rectangular cut shape portion of the ink absorber 50b. . If it will be in this state, since the upper side of the rib 40 will be located in a rectangular cut shape part, in the upper part of the rib 40, the deformation | transformation of the shape site | part 57 will be in the released state. Accordingly, the shape portion 57 returns to the shape before deformation as indicated by the arrow F7 at least at the portion facing the portion where the communication hole 46 is formed. At this time, the portion of the shape portion 57 (56) that faces the communication hole 46 that communicates with the waste liquid port 36 a in the left-right direction (the front and back direction on the paper surface) enters the communication hole 46.

According to this modification, in addition to the effects (1) to (5) according to the above embodiment, the following effects can be obtained.
(9) The ink absorber 50b is pushed into the cap 31, and the rib 40 is positioned within the width dimension Wh of the rectangular cut shape portion formed on the upper end side of the slit 53b, thereby releasing the deformation of the ink absorber 50b. Since the probability increases, the ink absorber 50b can be correctly inserted into the cap 31. Further, since the ink absorber 50b is difficult to be removed upward by the shape portions 56 and 57 entering the communication hole 46, the position after insertion is also stable.

  In the ink absorber 50b of the above modification, a gap may not be formed between the shape portion 56 and the shape portion 57. This modification will be described with reference to FIGS. 9A, 9B, 9C, and 9D.

  As shown in FIG. 9A, the ink absorber 50c of the present modification is extended so that the shape portions 56 and 57 are in contact with the ink absorber 50b of the modification in the front-rear direction. The shape which has the shape site | parts 56a and 57a may be sufficient.

  Further, in order to surely guide the ink to the waste liquid port 36a and discharge it, as shown in FIG. 9B, a predetermined amount in the waste liquid port 36a is provided below the portion where the shape portions 56 and 57 abut. It is good also as the ink absorber 50d in which the convex-shaped parts 58 and 59 which penetrate | invade were formed, respectively.

  And the convex-shaped parts 58 and 59 formed at this time are good also as forming in the shape of a semi-cylinder, respectively so that it can insert in the waste-liquid port 36a, as shown in FIG.9 (c). Note that, in a state where the convex portions 58 and 59 formed in a semi-cylindrical shape are in contact with each other, the convex portions 58 and 59 are set so that the maximum diameter is equal to or smaller than the width dimension We (preferably smaller than the width dimension We). 59 is preferably formed.

  Alternatively, the convex portions 58 and 59 formed at this time are formed by convex portions 58a and 59a each having a quadrangular prism shape so that they can be inserted into the waste liquid port 36a as shown in FIG. 9 (d). Alternatively, the ink absorber 50e may be used. In the state where the convex portions 58a and 59a formed in the shape of a quadrangular prism are in contact, the dimension of one side of the quadrangle formed on the lower surface is equal to or smaller than the width dimension We (preferably smaller than the width dimension We). It is preferable that it is formed so as to be a square pillar.

According to this modification, in addition to the effects (1) to (5) according to the above embodiment, the following effects can be obtained.
(10) In the state where the ink absorber 50c is pushed into the cap 31 and the insertion is completed, the shape portions 56a and 57a have more portions entering the communication hole 46, so that the ink is reliably guided to the waste liquid port 36a. Can do. Furthermore, in a state where the ink absorbers 50d and 50e are pushed into the cap 31 and the insertion is completed, the convex portions 58 and 59 (58a and 59a) have a portion that enters the waste liquid port 36a, so that the ink is discharged into the waste liquid. It can be reliably guided by the mouth 36a.

  In the ink absorbers 50b and 50c of the above modification, the shape portions 56 and 57 (shape portions 56a and 57a) have a thickness dimension in the left-right direction (front and back direction on the paper surface) and a width dimension Wf in the left-right direction of the communication hole 46. (Or width dimension Wr) or less. In this way, when the ink absorbers 50 b and 50 c are inserted into the cap 31 (cap 31 </ b> A), the shape portions 56 and 57 (shape portions 56 a and 57 a) can surely enter the communication hole 46.

-In the said embodiment, the shape of the waste-liquid port 36a does not necessarily need to be a rectangular shape. For example, it may be oval, circular, or elliptical.
-In the said embodiment, the height dimension of the formed rib 40 is not necessarily the same dimension as the height dimension H2 of the 1st bottom part 41B, and is a dimension which becomes higher than the height of the 1st bottom part 41B. The dimensions may be lower.

  -In the said embodiment, the height dimension H1 of the communicating hole 46 is not necessarily a half height of the height dimension H2 of the rib 40, and is a height above it or a height below it. There may be.

  In the above embodiment, the second space 42 does not necessarily have to be disposed so as to overlap in the center of the first space 41. For example, it may be shifted to either one of the front and rear directions. Of course, in this case, since the ink absorber 50 is asymmetric in the front-rear direction, directionality occurs when the ink absorber 50 is inserted into the cap 31.

  In the above embodiment, the rib 40 is not necessarily extended in the lateral direction (left-right direction) at the center position in the longitudinal direction. For example, when the farthest part 42b of the second bottom part 42B is formed at a position shifted from the center in the second bottom part 42B, the part where the inward tilt occurs in the long side wall 34 depends on the formation position of the farthest part 42b. Will shift from the center in the front-rear direction. Therefore, the rib 40 is preferably formed in accordance with the location where the shifted inward tilt occurs.

  In the above embodiment, the length dimension L2 of the second space 42 in the front-rear direction may be the same dimension as the length dimension L1 of the first space 41. That is, the cap 31 may have a bottomed box shape in which the first bottom portion 41B is not formed in the first space 41, and the side walls in the front-rear direction are continuously formed without a step in the vertical direction. In this way, the ink absorption capacity of the ink absorber 50 is increased as compared with the case of the above embodiment, and the same effects as those of the above embodiment and the above modification can be obtained.

  -In the said embodiment, it is good also as not providing a triangular cut shape part in the lower end side of the slit 53. FIG. When the ink absorber 50 is inserted into the cap 31 and the positional deviation between the slit 53 and the rib 40 is unlikely to occur, the cut shape portion need not be provided in this way.

  In the above embodiment, the width dimension We in the front-rear direction of the waste liquid port 36 a may be smaller than the width dimension Wr in the front-rear direction of the rib 40. Even if the rib 40 is in such a formed state, the communication hole 46 can be formed so as to penetrate the waste liquid port 36a by using, for example, a (partial) slide mold. Further, the lateral width Wf of the communication hole 46 may be larger than the lateral width We of the waste liquid port 36a. In the present embodiment, even if the lateral width Wf of the communication hole 46 is the same as the lateral width W1 of the rib 40, it is regarded as a communication hole. Accordingly, if at least a part of the rib 40 is extended to a position that overlaps the waste liquid port 36a when viewed from above, the communication hole 46 that communicates with the waste liquid port 36a can be formed by devising the mold structure. It is possible to form.

  In the above embodiment, the capping device 30 may not necessarily include the ink absorber 50. For example, when the ink ejected to the cap 31 is received by the cap 31 without being scattered, the ink absorber 50 is not necessarily provided.

  In the above embodiment, the liquid ejecting apparatus is embodied in the ink jet printer 11, but may be embodied in a liquid ejecting apparatus that ejects or discharges liquid other than ink. The present invention can be used for various liquid ejecting apparatuses including a liquid ejecting head that ejects a minute amount of liquid droplets. In addition, a droplet means the state of the liquid discharged from the said liquid ejecting apparatus, and shall also include what pulls a tail in granular shape, tear shape, and thread shape. The liquid here may be any material that can be ejected by the liquid ejecting apparatus. For example, it may be in a state in which the substance is in a liquid phase, such as a liquid with high or low viscosity, sol, gel water, other inorganic solvents, organic solvents, solutions, liquid resins, liquid metals (metal melts ) And a liquid as one state of a substance, as well as a material in which particles of a functional material made of a solid such as a pigment or metal particles are dissolved, dispersed or mixed in a solvent. Further, representative examples of the liquid include ink and liquid crystal as described in the above embodiment. Here, the ink includes general water-based inks and oil-based inks, and various liquid compositions such as gel inks and hot melt inks. As a specific example of the liquid ejecting apparatus, for example, a liquid containing a material such as an electrode material or a color material used for manufacturing a liquid crystal display, an EL (electroluminescence) display, a surface emitting display, a color filter, or the like in a dispersed or dissolved state. There is a liquid ejecting apparatus for ejecting. Alternatively, it may be a liquid ejecting apparatus that ejects a bio-organic material used for biochip manufacturing, a liquid ejecting apparatus that ejects a liquid that is used as a precision pipette and a sample, a printing apparatus, a micro dispenser, or the like. In addition, transparent resin liquids such as UV curable resin to form liquid injection devices that pinpoint lubricant oil onto precision machines such as watches and cameras, and micro hemispherical lenses (optical lenses) used in optical communication elements. A liquid ejecting apparatus that ejects a liquid onto the substrate or a liquid ejecting apparatus that ejects an etching solution such as an acid or an alkali to etch the substrate may be employed. The present invention can be applied to any one of these liquid ejecting apparatuses.

  DESCRIPTION OF SYMBOLS 11 ... Printer as a liquid ejecting device, 19 ... Liquid ejecting head, 30 ... Capping device, 31, 31A ... Cap, 33 ... Short side wall, 34 ... Long side wall, 35a ... Open end, 36a ... Waste liquid outlet, 40 ... Rib, 41B ... 1st bottom part, 42B ... 2nd bottom part, 46 ... Communication hole, 50, 50a, 50b, 50c, 50d, 50e ... Ink absorber as a liquid absorber, 53, 53a, 53b ... Slit, W1, We, Wf, Wh, Wk, Wr, Ws ... width dimensions.

Claims (7)

A capping device having a bottomed box-shaped cap having an opening at one end of a ring-shaped side wall and a bottom at the other end,
In the bottom,
A waste liquid outlet for discharging the liquid flowing in from the opening;
Ribs extending so as to connect the two opposing wall surfaces of the side wall at a position where at least a part of the waste liquid port overlaps in plan view when viewed from the opening side, are formed,
The capping device according to claim 1, wherein the rib is provided with a communication hole penetrating in a width direction intersecting with an extending direction of the rib and communicating with the waste liquid port. The capping device according to claim 1,
The capping apparatus according to claim 1, wherein the waste liquid port has at least a size larger than or equal to a width dimension of the rib. The capping device according to claim 1 or 2,
The liquid absorber is housed in the cap and has a slit formed at a position corresponding to the rib .
The capping device according to claim 1, wherein the slit has a width dimension equal to or less than a width dimension of the rib . The capping device according to claim 3,
The liquid absorber is
A capping device, wherein a cut shape portion cut into a triangular shape is provided at an end of the slit on a cut start side. The capping device according to claim 3 or 4 ,
The liquid absorber is
A capping device having a rectangular cut shape portion having a width dimension equal to or larger than a width dimension of the rib at an end portion of the slit on a cut end side. The capping device according to any one of claims 1 to 5 ,
The bottom portion is constituted by a second bottom portion having a portion farthest from the opening portion, and a first bottom portion formed at a portion closer to the opening portion than the second bottom portion,
2. The capping device according to claim 1, wherein the rib is formed at a portion farthest from the opening in the second bottom portion. A liquid ejecting head that ejects liquid onto a medium;
A capping device according to any one of claims 1 to 6 ,
A liquid ejecting apparatus comprising:

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