JP2017078237A - Inkjet printing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the amount of generated mist of ink.SOLUTION: An inkjet printing device (1) includes a groove-like liquid receiving section (8) to collect droplets passing through a medium (M). An inclined section (17) is formed so that droplets are moved toward a recovery port (16) in a bottom (15) of the liquid receiving section 8. The inkjet printing device includes a landing plate (9) to reduce a difference of a distance until the droplets generated by the inclined section (17) and passing through the medium (M) land.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an inkjet printing apparatus, and more particularly, to an inkjet printing apparatus including a liquid receiving portion for receiving droplets ejected from an inkjet head.

  When printing on a mesh-like medium such as a fabric, there are cases where droplets ejected from an ink-jet head penetrate through a through-hole (microhole) portion of the medium. Therefore, a recent ink jet printing apparatus is provided with a liquid receiving portion for recovering droplets penetrating a medium as disclosed in Patent Document 1.

  Patent Document 2 discloses an ink jet printing apparatus having an ink receiving portion that is detachably disposed on a platen of the ink jet printing apparatus and has an upper surface opened. The ink receiving portion is formed such that the bottom portion is tapered and inclined in a predetermined direction, and the ink stored in the bottom portion is discharged to the outside using the inclination.

JP 2001-30519 A (published February 6, 2001) JP 2008-126602 A (released on June 5, 2008)

  However, some of the droplets that have penetrated the medium may become mist (mist) due to the long distance until they land on the bottom of the liquid receiving portion. The generated mist floats in the air and can adhere to the media or parts inside the printing apparatus and cause contamination. In particular, in the configuration disclosed in Patent Document 1, in the liquid recovery unit (ink discharge hole) for recovering the liquid, the distance until the liquid droplet penetrating the medium reaches is increased. It tends to occur.

  Further, in the ink receiving portion disclosed in Patent Document 2, the distance until the droplet penetrating the medium reaches is the longest in the central portion of the bottom portion of the ink receiving portion. Since the central portion is a portion where the droplet discharge frequency by the inkjet head is the highest, mist generated is also increased. For this reason, the unevenness of the stain caused by the floating mist adhering to the media becomes remarkable.

  The present invention has been made in view of the above problems, and an object thereof is to provide an ink jet printing apparatus capable of reducing the amount of ink mist generated.

  In order to solve the above-described problem, an ink jet printing apparatus according to an aspect of the present invention includes a groove-shaped liquid receiving unit that collects liquid droplets ejected from an ink jet head and penetrating a recording medium. At least a part of the bottom of the receiving part has a liquid recovery part for discharging the liquid droplets from the liquid receiving part and an inclined part formed so that the liquid droplets move toward the liquid recovery part. And a correction device for reducing the difference in distance until the droplets penetrating the recording medium landed by the inclined portion is provided at a position corresponding to the inclined portion of the liquid receiving portion.

  According to the above configuration, the difference in distance until the liquid droplet penetrating the recording medium lands is smaller or eliminated as compared with the case where the liquid droplet directly lands on the bottom of the liquid receiving portion, and the liquid droplet penetrating the recording medium The distance until landing is uniform. In other words, since the distance until the liquid droplets penetrating the recording medium land is made uniform, it is possible to prevent unevenness in the amount of mist generated and to reduce the amount of mist generated.

  As described above, the ink jet printing apparatus according to one embodiment of the present invention can reduce the amount of mist generated while making the amount uniform.

  Further, in the ink jet printing apparatus according to one aspect of the present invention, the ink jet head ejects liquid droplets onto the recording medium while scanning, and the liquid receiving portion is along a scanning direction of the ink jet head. The correction device is a landing plate having a landing surface that is bridged across the direction intersecting the scanning direction above the bottom of the liquid receiving portion and on which the liquid droplets land. is there.

  According to the above configuration, since the landing plate is bridged above the bottom of the liquid receiving portion, the droplets penetrating the recording medium land on the landing surface of the landing plate. As a result, the distance until the liquid droplets penetrating the recording medium lands is uniform, so that the difference in distance until the liquid droplets penetrating the recording medium lands is reduced.

  In addition, since the droplet that has penetrated the recording medium is landed on the landing surface of the landing plate that extends over the bottom of the liquid receiving portion, there is a distance until the droplet that has penetrated the recording medium reaches the landing surface. Shorter. For this reason, the amount of mist generated can be reduced. As a result, it is possible to suppress the generated mist from floating in the air and adhering to the recording medium or the components inside the printing apparatus to cause contamination.

  In the ink jet printing apparatus according to an aspect of the present invention, the landing surface of the landing plate intersects the scanning direction of the landing surface in order to discharge the landed droplets to the liquid receiving portion. An inclination is formed toward the discharge port formed in at least one of the end portions in the direction in which it is performed.

  According to said structure, the droplet which reached the landing surface of the landing plate can be discharged | emitted to a liquid receiving part.

  In the ink jet printing apparatus according to an aspect of the present invention, a plurality of the landing plates are bridged above the bottom of the liquid receiving portion.

  According to said structure, the landing plate which concerns on 1 aspect of this invention is applicable also to the liquid receiving part from which the magnitude | size of the opening part of a liquid receiving part differs.

  In the ink jet printing apparatus according to an aspect of the present invention, the landing plate has a plurality of discharge ports, and a rib is formed between the two adjacent discharge ports.

  According to said structure, the intensity | strength of a landing plate can be raised more.

  In the ink jet printing apparatus according to one aspect of the present invention, the discharge port of the landing plate is located outside the droplet discharge region of the ink jet head.

  According to said structure, the droplet discharged from the inkjet head and penetrating the recording medium can be collect | recovered almost reliably.

  According to one aspect of the present invention, the size, density, total amount, etc. of the generated mist particles can be made uniform.

(A) in a figure is a figure which shows schematic structure of the inkjet printing apparatus which concerns on one Embodiment of this invention, (b) in the figure is a perspective view which shows the liquid receiving part which concerns on one Embodiment of this invention. FIG. It is a top view which shows the state by which the landing plate which concerns on one Embodiment of this invention is spanned above the bottom part of a liquid receiving part. It is a perspective view of a landing plate concerning one embodiment of the present invention. It is a figure which shows the attachment method of the landing plate which concerns on one Embodiment of this invention. (A) And (b) in a figure is an exploded view of the absorption member which concerns on one Embodiment of this invention. (A) And (b) in a figure is a figure which shows the assembly process of the absorption member which concerns on one Embodiment of this invention. It is a top view which shows the state in which the cloth presser is attached to the inkjet printing apparatus which concerns on 1 aspect of this invention.

  Hereinafter, embodiments of the present invention will be described in detail.

<First Embodiment>
[Outline of inkjet printer]
First, the configuration of the inkjet printing apparatus according to the present embodiment will be described with reference to FIG. FIG. 1A is a diagram showing a schematic configuration of a part of the ink jet printing apparatus 1 according to this embodiment, and FIG. 1B is a perspective view showing a liquid receiving portion 8 according to this embodiment.

  The ink jet printing apparatus 1 performs printing on a medium M (recording medium), and preferably performs printing on the medium M in which liquid droplets such as a cloth easily penetrate. As shown in FIG. 1A, the ink jet printing apparatus 1 includes a pinch roller 2, a grid roller 3, a tension roller 4, an ink jet head 5, a support portion 6, a frame 7, and a liquid receiving portion 8.

  The pinch roller 2 and the grid roller 3 are arranged to face each other, and convey the medium M in the x direction by rotating while pinching the medium M. More specifically, the pinch roller 2 is positioned on the printing surface side of the medium M, and mainly plays a role of pressing the medium M against the grid roller 3. On the other hand, the grid roller 3 is located on the back side of the medium M and mainly plays a role of conveying the medium M.

  A tension roller 4 is disposed on the downstream side of the pinch roller 2 and the grid roller 3 in the conveyance direction (x direction) of the medium M by the pinch roller 2 and the grid roller 3. The pulling roller 4 pulls the medium M and contributes to the conveyance of the medium M by the pinch roller 2 and the grid roller 3.

  An inkjet head 5 is disposed between the pinch roller 2 and the grid roller 3 and the tension roller 4. The inkjet head 5 performs printing by ejecting droplets while scanning in the y direction with respect to the conveyed medium M.

  Here, the medium M is configured to be substantially parallel to the nozzle surface of the ink jet head 5 and to bend less by pinching by the pinch roller 2 and the grid roller 3 and pulling by the pulling roller 4. Further, a support portion 6 fixed to the frame 7 is provided upstream of the inkjet head 5 in the transport direction, and the support portion 6 also contributes to preventing the medium M from being bent.

  In the frame 7, a liquid receiving portion 8 is disposed along the scanning direction (y direction) of the inkjet head 5 at a position facing the inkjet head 5. When the medium M is a mesh-like medium such as a cloth, the droplets ejected from the ink jet head 5 come out from the printing surface (landing surface) to the back surface through the through-holes (micro holes) of the medium M, and the medium M It may flow out to the back side.

  The liquid receiving portion 8 is for collecting the liquid droplets that have flowed out. As shown in FIG. 1B, the liquid receiving portion 8 has a groove-like structure having an opening 10 for receiving a droplet penetrating the medium M. At least the liquid receiving portion 8 An inclination (inclined portion 17) is formed on some bottom portions 15 in order to collect the received droplets outside. In this figure, the bottom portion 15 of the liquid receiving portion 8 is inclined in the scanning direction so as to be directed to the recovery port 16 (liquid recovery portion) formed in the substantially central portion of the bottom portion 15 in the scanning direction. The recovery port 16 is connected to a waste liquid tank, and is an opening for discharging the liquid in the liquid receiver 8 from the liquid receiver 8.

  Here, a part of the liquid droplets penetrating the medium M may become mist (mist) before landing on the bottom 15 of the liquid receiving portion 8. In addition, since the bottom portion 15 of the liquid receiving portion 8 is inclined in the scanning direction, there is a difference in the distance until a droplet penetrating the medium M reaches the bottom portion 15 between different positions in the scanning direction. Unevenness occurs in the amount of mist generated depending on the distance until the liquid droplets penetrating the medium M land on the bottom 15. That is, in the large-sized inkjet printing apparatus 1 in which the distance in the main scanning direction becomes long, the difference in distance until the liquid droplets penetrating the medium M land on the bottom portion 15 becomes large particularly at both end portions and the central portion. Unevenness of contamination of media M by mist is likely to occur. In particular, in the central portion in the scanning direction (around the collection port 16), the distance until a droplet that has penetrated the medium M reaches the bottom 15 becomes long, so that the mist particularly easily contaminates the medium M.

  Therefore, in the ink jet printing apparatus 1 according to the present embodiment, a correction instrument that reduces the difference in distance until the liquid droplets penetrating the medium M land between different positions in the scanning direction is inclined on the liquid receiving portion 8. And are provided at corresponding positions. In this figure, a landing plate 9 is provided as a correction device.

[Outline of landing plate 9]
The landing plate 9 will be described with reference to FIGS. FIG. 2 is a top view showing a state where the landing plate 9 is bridged above the bottom 15 of the liquid receiving portion 8, and FIG. 3 is a perspective view of the landing plate 9.

  As shown in FIG. 2, the landing plate 9 is straddled above the bottom portion 15 of the liquid receiving portion 8 in a direction intersecting with the scanning direction (y direction) by the inkjet head 5 (that is, the transport direction; x direction). It is the one that was laid. As shown in the figure, a plurality of landing plates 9 may be arranged. Accordingly, the landing plate 9 can be applied to the liquid receiving portions 8 having different shapes such as the groove width (x direction).

  As shown in FIG. 3, the landing plate 9 has claw portions 11 a and 11 b formed at both ends of the landing surface 14. The claw portion 11a is hooked on the end portion of the frame 7, the claw portion 11b is hooked on the end portion of the support portion 6, and spans from the end portion of the frame 7 to the end portion of the support portion 6. Yes. In this way, the landing plate 9 is bridged above the bottom portion 15 of the liquid receiving portion 8 so as to straddle the direction intersecting the scanning direction by the inkjet head 5.

  A droplet penetrating the medium M will land on the landing surface 14 connecting the claw portion 11a and the claw portion 11b. As a result, the difference in distance until the liquid droplets penetrating the medium M land between different positions in the scanning direction is smaller or eliminated as compared with the case where the liquid droplets 8 directly land on the bottom 15 of the liquid receiving unit 8. The distance until the droplets penetrating M land is uniform in the scanning direction. That is, since the distance until the liquid droplets that have penetrated the medium M land in the scanning direction is uniform in the scanning direction, it is possible to prevent unevenness in the amount of mist generated and to reduce the amount of mist generated in the center portion. be able to.

  As described above, the inkjet printing apparatus 1 according to the present embodiment can reduce the amount of mist generated while making the amount uniform.

  Further, since the liquid droplets that have penetrated the medium M land on the landing surface 14 of the landing plate 9 that extends over the bottom portion 15 of the liquid receiving portion 8, the liquid droplets that have penetrated the medium M land. The distance to is shortened. Accordingly, it is possible to reduce the amount of mist generated until the droplet penetrating the medium M reaches the ground. As a result, it is possible to prevent the generated mist from floating in the air and adhering to the medium M or the components inside the printing apparatus to cause contamination.

  Since the claw portions 11a and 11b of the landing plate 9 are hooked on the end portion of the frame 7 and the end portion of the support portion 6, respectively, the end portion of the frame 7 and the end portion of the support portion 6 are respectively claw portions. 11a and 11b. Therefore, it is possible to reduce contamination of the frame 7 and the support portion 6 due to the droplets ejected from the inkjet head 5.

  In addition, since the claw portions 11a and 11b of the landing plate 9 are respectively hooked on the end of the frame 7 and the end of the support portion 6, it can be applied to various ink jet printing apparatuses 1. The inkjet printing apparatus 1 can be a common component. This is because it is only necessary to have a place to hook without depending on the shape of the groove.

[Structure of landing plate 9]
As shown in FIG. 3, the landing plate 9 is inclined in the transport direction toward the discharge port 12 formed in the landing surface 14 in order to discharge the landed droplets to the liquid receiving portion 8. . The slope formed on the landing surface 14 may be a slope that does not cause unevenness in the degree of mist generated. That is, the difference in the vertical distance between the landing surface 14 at each of the end portions in the transport direction (that is, the end portions on the claw portions 11a and 11b side) and the straight line connecting the claw portions 11a and 11b is small. It only has to be. Specifically, the difference in distance in the vertical direction between the landing surface 14 at each end in the transport direction and the straight line connecting the claws 11a and 11b is the recovery port 16 of the bottom 15 of the liquid receiving part 8. In addition, it is only necessary to be smaller than the difference in distance in the vertical direction between the bottom 15 at each end in the scanning direction and the straight line connecting the ends in the scanning direction. Thereby, the distance until the droplet that has penetrated the medium M reaches the landing surface 14 is substantially uniform in the transport direction.

  As shown in FIG. 3, the discharge port 12 has a discharge port 12 at one or both of two end portions (that is, end portions on the claw portions 11 a and 11 b side) arranged in the transport direction on the landing surface 14. Is preferably provided. In this figure, the discharge port 12 is provided only at the end of the landing surface 14 on the claw portion 11b side.

  In the case where the discharge ports 12 are provided at both of the two end portions arranged in the transport direction on the landing surface 14, an inclination is formed from the center portion of the landing surface 14 toward each of the discharge ports 12. At this time, the difference in distance in the vertical direction between the central portion and each discharge port 12 and the straight line connecting the claws 11a and 11b is the recovery port 16 of the bottom portion 15 of the liquid receiving portion 8 and each end portion in the scanning direction. What is necessary is just to be smaller than the difference of the distance in the vertical direction between the bottom part 15 and the straight line connecting the end parts in the scanning direction.

  Further, the discharge port 12 is preferably located outside the droplet discharge region by the inkjet head 5. For this purpose, it is preferable that the landing plate 9 has a sufficient length so that a portion of the landing surface 14 where the discharge port 12 is not formed faces a droplet discharge region by the inkjet head 5. . Thereby, the liquid droplets ejected from the ink jet head 5 and penetrating the medium M can be collected almost certainly.

  When the discharge port 12 is positioned outside the droplet discharge region of the inkjet head 5, the discharge port 12 has two end portions (that is, end portions on the claw portions 11a and 11b side) arranged in the transport direction. ) Is preferably formed only on one side. Thereby, it becomes easy to ensure the distance of the landing surface 14 for inclining.

  The landing plate 9 is preferably formed with a plurality of discharge ports 12. Thereby, the strength of the landing plate 9 can be maintained. Further, in order to further increase the strength of the landing plate 9, it is preferable that a rib 13 is formed between two adjacent discharge ports 12. An opening larger than the thickness of the rib 13 is formed on both sides of the rib 13 in the scanning direction. Since the landing plate 9 has such a structure, when the plurality of landing plates 9 are overlapped with each other, the ribs 13 of the lower landing plate 9 stacked in the vertical direction are on the upper side. By being inserted into the opening of the landing plate 9, it can be compactly overlapped. Therefore, for example, when the landing plates 9 that are not used are stored or when the landing plates 9 are transported, the plurality of landing plates 9 can be made compact, which is preferable.

[Attaching the landing plate 9]
FIG. 4 shows a method for attaching the landing plate 9. The landing plate 9 can be easily attached. As shown in FIG. 4, in order to hook the claw portion 11b of the landing plate 9 on the end portion of the support portion 6 from above, the back surface portion 11b 'of the claw portion 11b is supported by the support portion 6. The claw portion 11b is hooked on the end portion of the support portion 6 by being pressed against the side surface 6 'of the frame 7, and further, the claw portion 11a is released on the end portion of the frame 7, so that the claw portion 11a can be easily attached to the frame 7 Can be hooked to the end.

  At this time, the landing plate 9 is preferably arranged so that the side on which the discharge port 12 is formed on the landing surface 14, that is, the deepest part side of the landing plate 9 is the upstream side in the transport direction. The deepest portion is a portion having the longest distance from the uppermost surface (a straight line connecting the claws 11a and 11b) of the claws 11a and 11b of the landing plate 9. For example, in FIG. 4, the discharge port 12 is formed on the landing surface 14, and the end portion on the side of the landing plate 9 that is the deepest portion is disposed on the upstream side in the transport direction.

  When the landing plate 9 is attached so that the deepest portion side of the landing plate 9 is on the upstream side in the transport direction, attachment when the landing plate 9 is attached to the liquid receiving portion 8 from the upstream side in the transport direction becomes easier. . In other words, the position on the deepest part side when attaching the landing plate 9 may be determined according to whether the landing plate 9 is attached to the liquid receiving portion 8 from the upstream side or the downstream side in the transport direction.

  Although the case where the correction device is the landing plate 9 has been described above, the correction device is not limited to the landing plate 9. For example, the correction device may be a landing block disposed in the liquid receiving portion 8.

  For example, the landing block is preferably formed with an upper surface so that the distance until the droplets penetrating the medium M land is uniform. As a result, the distance until the liquid droplets penetrating the medium M land is uniform, and therefore the difference in distance until the liquid droplets penetrating the medium M land. In addition, since the liquid droplets that have penetrated the medium M land on the upper surface of the landing block disposed in the liquid receiving portion 8, the distance until the liquid droplets that have penetrated the medium M land.

<Second Embodiment>
The inkjet printing apparatus 1 can perform so-called borderless printing, in which printing is performed on the entire surface of the medium M without a margin. In this case, the droplets ejected from the inkjet head 5 may come off from the edge of the medium M to become mist, float in the air, adhere to the medium M or components inside the printing apparatus, and cause dirt.

  Therefore, in the present embodiment, the absorbing member is disposed next to the landing plate 9 (in the case of a plurality of landing plates 9, the landing plate 9 positioned at the extreme end). The absorbing member is for receiving and absorbing droplets that are detached from the edge of the medium M. In FIG. 2, the absorbing member is disposed next to the landing plate 9 located on the rightmost side in the drawing.

[Configuration of Absorbing Member]
The absorbing member will be described with reference to FIGS. FIGS. 5A and 5B are exploded views of the absorbing member, and FIGS. 6A and 6B are views showing an assembling process of the absorbing member.

  The absorbing member includes a cover portion 20 shown in FIG. 5A and a pedestal portion 25 shown in FIG. The pedestal 25 supports an absorber that receives and absorbs liquid droplets that are detached from the edge of the medium M, and the cover 20 is fitted with the pedestal 25 so that the absorber is supported by the pedestal. 25 for holding between.

  As shown to (a) of FIG. 5, the cover part 20 has the upper surface 21 which has the opening part 23, and the side surfaces 24a and 24b extended from the side edge part of the said upper surface 21. As shown in FIG. Claw portions 22a and 22b are formed on the side surfaces 24a and 24b, respectively. Further, a claw portion 28 a is formed at the upper end portion of the cover portion 20.

  As shown in FIG. 5B, the pedestal portion 25 includes a support surface 26 and side surfaces 27 a and 27 b extending from the side end portions of the support surface 26. A claw receiving portion 28 b is formed at the upper end portion of the support surface 26. As will be described later, the pedestal portion 25 is fitted to the cover portion 20 with the side surfaces 27a and 27b facing downward (that is, the state in which (b) of FIG. 5 is turned over). In order to make the structure easy to see, the pedestal 25 is shown with the side surfaces 27a and 27b facing upward.

  Next, assembly of the absorbing member will be described. First, as shown in FIG. 6A, the absorber 35 is placed on the support surface 26 of the pedestal portion 25. In this state, as shown in FIG. 6B, the cover portion 20 is put on the pedestal portion 25, and the claw portions 22a and 22b are pressed downward, whereby the claw receiving portion 28b and the cover portion of the pedestal portion 25 are pressed. The 20 claw portions 28 are fitted to complete the absorbing member 30.

  Here, the absorber 35 is bent downward by being sandwiched between the side surfaces 24 a and 24 b of the cover portion 20 and the side surfaces 27 a and 27 b of the pedestal portion 25. At least one of the bent portions extends through the opening 10 of the liquid receiving portion 8 until it contacts the bottom 15 of the liquid receiving portion 8. Accordingly, the liquid droplets received and collected by the absorbing member 30 from the opening 23 can be efficiently guided to the collection port 16 of the liquid receiving unit 8.

  In the ink jet printing apparatus 1, in addition to the borderless printing as in the second embodiment, printing (printing with a border) can be performed in a state where a margin is left on the medium M. This will be described with reference to FIG. FIG. 7 is a top view showing a state in which a cloth presser is attached to the inkjet printing apparatus 1.

  When performing printing with a border, the end of the medium M in the scanning direction is pressed by a cloth presser 40 on the liquid receiving portion 8 as shown in FIG. Thereby, it is suppressed that the edge part of the medium M floats. The cloth presser 40 is provided with a pressing portion 40a at one end in the scanning direction, and claw portions 40b and 40c are provided at the respective ends in the transport direction.

  The cloth presser 40 is stretched over the liquid receiving portion 8 by hooking the claw portion 40b on the end portion of the support portion 6 from above and hooking the claw portion 40c on the end portion of the frame 7 from above. The medium M is pressed from above by 40a.

  In FIG. 2, the absorbing member 30 and the cloth presser 40 are arranged next to the landing plate 9 located on the rightmost side in the drawing so as to be adjacent to the end of the medium M in the scanning direction. Depending on the size of the medium M in the scanning direction, the landing plate 9 having the same size may not be disposed on the liquid receiving portion 8 without a gap.

  In such a case, a gap may be provided between adjacent landing plates 9. At this time, it is preferable to provide a gap in the center portion of the medium M, rather than providing a gap near both ends in the scanning direction of the medium M. This is because both ends of the medium M in the scanning direction are susceptible to airflow fluctuations that occur when the inkjet head 5 moves along the scanning direction, and in particular, mist is often generated. By providing the landing plates 9 in the vicinity of both ends of the medium M without any gap, it is possible to more effectively suppress the occurrence of mist.

[Summary]
The ink jet printing apparatus 1 according to one aspect of the present invention includes a groove-shaped liquid receiving portion 8 for collecting droplets ejected from the ink jet head 5 and penetrating the medium M, and a bottom portion 15 of the liquid receiving portion 8. At least a part of the liquid recovery part (recovery port 16) for discharging the liquid droplets from the liquid receiving part 8, and an inclined part 17 formed so that the liquid droplets move toward the liquid recovery part. And a correction device (landing plate 9) for reducing a difference in distance until the droplet penetrating the medium M is landed, which is generated by the inclined portion 17, the inclined portion of the liquid receiving portion 8. 17 is provided at a position corresponding to 17.

  According to the configuration described above, the difference in distance until the liquid droplets penetrating the medium M land is smaller or eliminated as compared with the case where the liquid droplets have landed directly on the bottom 15 of the liquid receiving portion 8, and the liquid penetrating the medium M The distance until the droplets land is uniform. In other words, since the distance until the liquid droplets penetrating the medium M land is made uniform, it is possible to prevent unevenness in the amount of mist generated and to reduce the amount of mist generated.

  As described above, the inkjet printing apparatus 1 according to one embodiment of the present invention can reduce the amount of mist generated while making the amount uniform.

  Further, in the ink jet printing apparatus 1 according to one aspect of the present invention, the ink jet head 5 ejects liquid droplets onto the medium M while scanning, and the liquid receiving portion 8 includes the ink jet head 5. The correction device is provided along the scanning direction, and the correction device is bridged above the bottom portion 15 of the liquid receiving portion 8 in a direction crossing the scanning direction, and the landing of the droplets A landing plate 9 having a surface 14.

  According to the above configuration, since the landing plate 9 is stretched over the bottom portion 15 of the liquid receiving portion 8, the droplets penetrating the medium M land on the landing surface 14 of the landing plate 9. . As a result, the distance until the liquid droplets penetrating the medium M land is uniform, and therefore the difference in distance until the liquid droplets penetrating the medium M land.

  Further, since the liquid droplets that have penetrated the medium M land on the landing surface 14 of the landing plate 9 that extends over the bottom portion 15 of the liquid receiving portion 8, the liquid droplets that have penetrated the medium M land. The distance to is shortened. For this reason, the amount of mist generated can be reduced. As a result, it is possible to prevent the generated mist from floating in the air and adhering to the medium M or the components inside the printing apparatus to cause contamination.

  Further, in the ink jet printing apparatus 1 according to an aspect of the present invention, the landing surface 14 of the landing plate 9 has the landing surface 14 in order to discharge the landed droplets to the liquid receiving portion 8. An inclination is formed toward the discharge port 12 formed in at least one of the end portions in the direction crossing the scanning direction.

  According to the above configuration, the droplets that have landed on the landing surface 14 of the landing plate 9 can be discharged to the liquid receiving portion 8.

  In the ink jet printing apparatus 1 according to one aspect of the present invention, a plurality of the landing plates 9 are bridged above the bottom portion 15 of the liquid receiving portion 8.

  According to said structure, the landing plate 9 which concerns on 1 aspect of this invention is applicable also to the liquid receiving part 8 from which the magnitude | size of the opening part 10 of the liquid receiving part 8 differs.

  In the inkjet printing apparatus 1 according to an aspect of the present invention, the landing plate 9 has a plurality of the discharge ports 12, and ribs 13 are provided between the two adjacent discharge ports 12. Is formed.

  According to said structure, the intensity | strength of the landing plate 9 can be raised more.

  Further, in the ink jet printing apparatus 1 according to one aspect of the present invention, the discharge port 12 of the landing plate 9 is located outside the discharge area of the droplets by the ink jet head 5.

  According to said structure, the droplet discharged from the inkjet head 5 and penetrating the medium M can be collect | recovered almost reliably.

  The present invention is not limited to the above-described embodiments, and various modifications are possible within the scope shown in the claims, and embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is also included in the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Inkjet printing apparatus 5 Inkjet head 6 Support part 8 Liquid receiving part 9 Landing plate (correction instrument)
DESCRIPTION OF SYMBOLS 10 Opening part 12 Outlet 13 Rib 14 Landing surface 15 Bottom 16 Collection port (liquid collection part)
17 Inclined part

Claims (6)

A groove-shaped liquid receiving portion for collecting droplets ejected from the inkjet head and penetrating the recording medium is provided.
At least a part of the bottom of the liquid receiving part includes a liquid recovery part for discharging the liquid droplets from the liquid receiving part and an inclined part formed so that the liquid droplets move toward the liquid recovery part. Have
Ink-jet printing comprising: a correction device that reduces a difference in distance until the liquid droplets penetrating the recording medium landed by the inclined portion correspond to the inclined portion of the liquid receiving portion apparatus. The inkjet head discharges droplets to the recording medium while scanning,
The liquid receiver is provided along the scanning direction of the inkjet head,
The correction device is bridged across the direction intersecting the scanning direction above the bottom of the liquid receiving portion,
The inkjet printing apparatus according to claim 1, wherein the inkjet printing apparatus is a landing plate having a landing surface on which the droplets land.   In the landing surface of the landing plate, in order to discharge the landed liquid droplets to the liquid receiving portion, a discharge port formed in at least one of the end portions in the direction intersecting the scanning direction of the landing surface. The ink jet printing apparatus according to claim 2, wherein an inclination is formed toward the head.   The inkjet printing apparatus according to claim 2 or 3, wherein a plurality of the landing plates are bridged above the bottom of the liquid receiving portion. The landing plate is formed with a plurality of the discharge ports,
The inkjet printing apparatus according to claim 3, wherein a rib is formed between two adjacent discharge ports.   The inkjet printing apparatus according to claim 3, wherein the discharge port of the landing plate is located outside a discharge region of the droplets by the inkjet head.

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