JP6613614B2 - Liquid ejection device - Google Patents

Description

  The present invention relates to a liquid ejection apparatus.

  2. Description of the Related Art Conventionally, as an example of a liquid ejecting apparatus, an ink jet printer that records liquid images onto a medium by ejecting liquid onto a medium such as paper or cloth has been known. The ink jet printer includes a recording head in which a plurality of nozzles (ejection units) are formed, and the recording head is ejected from the ejection unit with respect to the medium conveyed on the platen while the recording head is in the medium conveyance direction (sub-scanning). The main scanning for moving in the main scanning direction intersecting the direction) and the sub scanning for transporting the medium in the sub scanning direction are repeated alternately. As a result, an image is formed on the medium. In such a liquid ejecting apparatus, when a liquid is ejected from the ejecting unit, an extremely small droplet (mist) floating inside the liquid ejecting apparatus is generated, and this mist stains the inside of the medium or the liquid ejecting apparatus to generate an image. There was a risk of lowering the quality. For this reason, for example, Patent Document 1 discloses a liquid ejecting apparatus (liquid ejecting apparatus) including a mist collecting unit that sucks and collects mist.

JP 2007-229950 A

  However, the liquid ejection device described in Patent Document 1 is provided with a plurality of suction holes on the platen along the main scanning direction, and the mist is sucked from suction holes in a region located outside in the width direction in the main scanning direction of the medium. It has a configuration to let you. For this reason, it is difficult to recover the mist generated when the liquid is discharged from the discharge portion at the center of the medium, and the mist still diffuses inside the liquid discharge device. was there.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

  Application Example 1 A liquid discharge apparatus according to this application example includes a carriage that can move a discharge unit that discharges liquid onto a medium in a main scanning direction, and the carriage includes at least one of the discharge units in the main scanning direction. A capture unit that captures mist generated when the liquid is ejected from the ejection unit is provided on one side, and the capture unit includes a capture unit that captures the mist.

  According to this application example, the carriage of the liquid ejection device includes the capturing unit on at least one side of the ejection unit. In other words, the capturing unit that captures mist reciprocates in the main scanning direction together with the discharge unit. Furthermore, since the capture unit includes a capture unit that captures the captured mist, most of the mist generated when the liquid is discharged from the discharge unit can be captured immediately after the generation. As a result, the mist floating inside the liquid ejection device is reduced, so that the inside of the liquid ejection device and the medium can be prevented from being contaminated by the mist. Therefore, it is possible to provide a liquid ejection device with improved image quality.

  Application Example 2 In the liquid ejection apparatus according to the application example described above, the capturing unit extends along a sub-scanning direction intersecting the main scanning direction, and a capturing port is provided on a surface facing the medium. It is preferable.

  According to this application example, the capturing unit of the liquid ejecting apparatus is provided with a capturing port that captures mist on a surface (bottom surface) that extends in the sub-scanning direction and faces the medium, and reciprocates in the main scanning direction together with the ejecting unit. . Mist generated by discharging the liquid from the discharge unit is captured inside the capture unit from the capture port of the capture unit that passes immediately after. Thereby, the capture efficiency of mist can be improved.

  Application Example 3 In the liquid ejection device according to the application example described above, it is preferable that the capturing unit includes a fan that generates an air flow toward the capturing unit.

  According to this application example, the capturing unit of the liquid ejection apparatus includes the fan that generates an air flow toward the capturing unit, and thus mist can be guided from the capturing port to the capturing unit.

  Application Example 4 In the liquid ejection apparatus according to the application example described above, it is preferable that the fan is provided on one end side of the capturing unit in the sub-scanning direction.

  According to this application example, the fan is provided on one end side in the sub-scanning direction of the capturing unit, and generates an air flow from one end side to the capturing unit and to the other end side. This airflow induces the mist flowing from the capturing port to the capturing unit. In other words, since the mist does not pass through the fan, the mist can be guided to the capturing unit without being contaminated by the mist.

  Application Example 5 In the liquid ejection apparatus according to the application example described above, it is preferable that the capturing unit includes an absorbent material that absorbs the mist.

  According to this application example, since the capturing unit has the absorbent that absorbs mist, the mist can be captured efficiently.

  Application Example 6 In the liquid ejection device according to the application example described above, it is preferable that the capturing unit has a fin-shaped uneven portion.

  According to this application example, the capture unit has the fin-shaped uneven portion and has a large surface area in contact with the mist, so that the mist can be captured efficiently.

  Application Example 7 In the liquid ejection device according to the application example described above, it is preferable that the capturing unit is provided on an inner surface facing the capturing port.

  According to this application example, the mist flows from the capturing port provided on the surface (bottom surface) facing the medium and rises toward the inner surface facing the capturing port, so the inner surface facing the capturing unit to the capturing port. By providing in, mist can be captured efficiently.

  Application Example 8 In the liquid ejection device according to the application example described above, it is preferable that the capturing unit is provided on an inner surface that intersects with a surface provided with the capturing port.

  According to this application example, since the capture unit is provided on the inner surface that intersects the surface provided with the capture port, even if a large amount of mist adheres to the capture unit and becomes liquid, the liquefied mist ( Liquid) descends along the inner surface. In other words, since the capture unit is not provided on the inner surface facing the capture port, the liquid drops as a droplet from the capture unit and flows out of the capture port to contaminate the inside of the liquid ejection device and the medium. Can be prevented.

  Application Example 9 In the liquid ejection apparatus according to the application example described above, the capturing unit is located between the capturing port and an inner surface facing the capturing port at a position overlapping the capturing port in plan view. It is preferable to have a liquid guiding part.

  According to this application example, the capturing unit includes the liquid guiding unit between the capturing port and the inner surface facing the capturing port. Even when the capture unit is provided at a position facing the capture port, a large amount of mist adheres to the capture unit, and the liquefied mist (liquid) drops as a droplet from the capture unit and flows out of the capture port. Thus, it is possible to prevent the inside of the liquid ejection device and the medium from being contaminated.

  Application Example 10 In the liquid ejection device according to the application example, it is preferable that the liquid guide portion is inclined toward the inner side surface of the capturing portion.

  According to this application example, since the liquid guiding portion is inclined toward the inner side surface of the capturing unit, the captured mist grows and becomes a droplet to collect the liquid dropped from the capturing unit on the inner side surface. The liquid can be easily recovered.

  Application Example 11 In the liquid ejection apparatus according to the application example described above, the fan is configured such that the wind speed when the carriage is stopped is faster than the wind speed when the carriage is moving in the main scanning direction. It is preferable that it can be driven.

  According to this application example, if the wind speed of the fan is increased in a state where the liquid is being discharged from the discharge unit, the discharge position of the droplet may be shifted. Therefore, in the liquid ejection device of this application example, the fan is driven at a wind speed faster than the wind speed during movement of the carriage while the carriage is not ejected from the ejection section. Thereby, the effect of attaching the mist captured by the capturing part to the capturing part can be improved.

FIG. 2 is a perspective view illustrating a schematic overall configuration of a recording apparatus as a liquid ejection apparatus according to an embodiment. FIG. 2 is a side view illustrating an outline of a recording apparatus. FIG. 3 is a perspective view showing an outline around a recording area, which is a main part of the recording apparatus. FIG. 2 is a front view illustrating an outline of a recording apparatus. FIG. 2 is a rear view showing an outline of a recording apparatus. FIG. 3 is a block diagram illustrating an electrical configuration of the recording apparatus. The front view which shows schematic structure of a carriage. The side view which shows schematic structure of a carriage. The perspective view which shows schematic structure of a carriage. The bottom view which shows schematic structure of a frame-shaped part and a capture part. (A) Sectional drawing in CC line of the capture part shown in FIG. (B) Sectional drawing in the DD line of the capture part shown in FIG. Sectional drawing in the DD line of the capture part shown in FIG. Sectional drawing in the DD line of the capture | acquisition part shown in FIG. (A) Sectional drawing in the EE line of the capture | acquisition part shown in FIG. (B) Sectional drawing in the DD line of the capture part shown in FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following drawings, the scale of each layer and each member is different from the actual scale so that each layer and each member can be recognized.

(Embodiment)
<Schematic configuration of liquid ejection device>
FIG. 1 is a perspective view illustrating a schematic overall configuration of a recording apparatus as an example of a liquid ejection apparatus according to an embodiment. FIG. 2 is a side view showing an outline of the recording apparatus. FIG. 3 is a perspective view schematically showing the periphery of the recording area, which is a main part of the recording apparatus. FIG. 4 is a front view showing an outline of the recording apparatus. FIG. 5 is a rear view schematically showing the recording apparatus. 1 to 5 show a state in which a part of the constituent members is removed from the recording apparatus. For example, the sub-carriage 5 (see FIG. 7) having the recording head 7 (see FIG. 7) from the carriage 6 is shown. The removed state is shown.
First, a schematic configuration of the recording apparatus 1 will be described.

  As shown in FIGS. 1 to 3, the recording apparatus 1 transports a medium in a transport direction A by an adhesive belt 2 as a transport belt (endless belt) that supports the medium on a support surface to which an adhesive is attached. A mechanism 3 is provided. The recording apparatus 1 includes a feeding unit (not shown) that can set a roll-shaped medium and can feed the medium to the transport mechanism 3. In addition, the recording apparatus 1 includes a carriage that can move a recording head 7 (see FIG. 7) as an ejection unit that ejects liquid onto a medium in the main scanning direction. Specifically, in a medium conveyance area by the conveyance mechanism 3, a carriage 6 having a recording head 7 (see FIG. 7) as an ejection unit is placed in a main scanning direction B that intersects the medium conveyance direction (sub-scanning direction) A. There is provided a recording mechanism 4 that is moved to record an image or the like on the medium. Further, the recording apparatus 1 includes a winding mechanism (not shown) capable of winding a medium on which an image or the like is recorded by the recording mechanism 4.

  The conveyance mechanism 3 includes an adhesive belt 2 that places and conveys the medium fed from the feeding unit, a driving roller 8 that moves the adhesive belt 2, and a driven roller 9. The medium is attached to the support surface of the adhesive belt 2 and placed. In addition, although it demonstrated that an adhesive belt was used for a conveyance belt, it is not limited to this. For example, the conveyance belt may be an electrostatic adsorption endless belt that adsorbs a medium to the belt with static electricity. The recording apparatus 1 according to the present embodiment includes the transport mechanism 3 having the above-described configuration, but is not limited to the transport mechanism having the above-described configuration, and transports a medium supported by a movable support tray or the like. A configuration or a configuration in which a medium is conveyed by a roller pair or the like may be used. In addition, a so-called flood bed type recording apparatus may be used in which the medium is fixed to the support portion and the recording head 7 is moved with respect to the fixed medium for recording.

  The recording mechanism 4 includes a carriage motor 30 (see FIG. 6) that reciprocally moves a carriage 6 including a recording head 7 as an ejection unit in the main scanning direction B. The recording apparatus 1 includes a pipe 11a that extends in the main scanning direction B and forms a skeleton, and a pipe 11b that is parallel to the pipe 11a. A rail 10a is provided on the upper surface of the pipe 11a, and a rail 10b is provided on the upper surface of the pipe 11b. The recording mechanism 4 reciprocates the carriage 6 guided by the rails 10a and 10b in the main scanning direction B.

  The recording apparatus 1 according to the present embodiment includes a main scanning in which the carriage motor 30 is driven while ejecting liquid from the recording head 7 to move the recording head 7 in the main scanning direction, and the adhesive belt 2 on which a medium is placed. By alternately repeating the sub-scan transported in the sub-scan direction, an image or the like is recorded on the medium. The transport mechanism 3 intermittently transports the adhesive belt 2 corresponding to the main scanning of the carriage 6 to transport the medium in the sub-scanning direction. In the following description, an extremely small droplet that floats inside the recording apparatus 1 and is generated when the liquid is ejected from the recording head 7 is referred to as “mist”.

  A blower section 12 is provided at a lower position of the pipe 11b. The blower section 12 extends in the main scanning direction B and blows air in a direction opposite to the transport direction A from a plurality of blower openings (not shown). A recovery unit 13 that extends in the main scanning direction B and can recover the mist discharged from the recording head 7 is provided at a position below the pipe 11a. The collection unit 13 is provided with a collection port 16 extending in the main scanning direction B at a position below the pipe 11a.

  As shown in FIG. 4, a plurality (three) of blower fans 14 that generate a blowing force by the blowing unit 12 are provided on the downstream side (front side) in the transport direction A of the recording apparatus 1 of the present embodiment. ing. The blowing section 12 can blow air toward the collection port 16 from outside the collection section 13 (position on the downstream side in the transport direction A) by the blowing force generated by the blower fan 14.

  Further, as shown in FIG. 5, on the upstream side (back side) in the transport direction A of the recording apparatus 1, the recording apparatus 1 extends from the collection port 16 toward the inside of the collection section 13 and from the inside of the collection section 13. A plurality (three) of suction fans 15 for generating an airflow are provided toward the outside of the apparatus.

<Electrical configuration of liquid ejection device>
FIG. 6 is a block diagram showing an electrical configuration of the recording apparatus 1 of the present embodiment. Next, the electrical configuration of the recording apparatus 1 will be described.

  The control unit 23 is for controlling the recording apparatus 1. The control unit 23 includes an input / output unit 34, a CPU (Central Processing Unit) 24, a ROM (Read Only Memory) 26, a RAM (Random Access Memory) 27, a head drive unit 28, and a motor drive unit 29. The CPU 24 is connected to the input / output unit 34, the ROM 26, the RAM 27, the head driving unit 28, and the motor driving unit 29 via the system bus 25. The CPU 24 is an arithmetic processing unit for controlling the entire recording apparatus 1. The input / output unit 34 transmits and receives data between a PC (Personal Computer) 35 that is an external device and the recording apparatus 1. The ROM 26 and the RAM 27 are for securing an area for storing a program of the CPU 24, a work area, and the like.

  The CPU 24 controls the head driving unit 28 and the motor driving unit 29 in accordance with a program stored in the ROM 26. The head drive unit 28 generates a drive signal for driving a piezoelectric element (not shown) that discharges liquid from the recording head 7 as the discharge unit. The motor driving unit 29 is a driving signal for driving the carriage motor 30, the conveyance motor 31, the feeding motor 32, the winding motor 33, the blower fan motor 17, the suction fan motor 18, the carriage fan motor 19, and the subcarriage fan motor 22. Is generated.

  The carriage motor 30 is a motor for moving the carriage 6 including the recording head 7. The transport motor 31 is a motor for driving the drive roller 8. The feeding motor 32 is a driving motor for the feeding unit for feeding a medium set in a feeding unit (not shown) to the transport mechanism 3. The take-up motor 33 is a drive motor for driving a take-up mechanism (not shown) to take up a medium on which an image or the like is recorded. The blower fan motor 17 is a motor for driving the blower fan 14. The suction fan motor 18 is a motor for driving the suction fan 15. The carriage fan motor 19 is a motor for driving a carriage fan 20 (see FIG. 7) described later. The sub-carriage fan motor 22 is a motor for driving a sub-carriage fan 21 (see FIG. 7) described later.

<Carriage>
FIG. 7 is a front view showing a schematic configuration of the carriage 6. FIG. 8 is a side view showing a schematic configuration of the carriage 6. FIG. 9 is a perspective view showing a schematic configuration of the carriage 6. FIG. 10 is a bottom view showing a schematic configuration of the frame-shaped portion 37 and the capturing portions 38a and 38b. FIG. 9 is a perspective view showing the arrangement of a plurality of recording heads 7 provided in each sub-carriage 5.
The carriage 6 which is a main part of the recording apparatus 1 will be described with reference to FIGS.

  As shown in FIGS. 7 and 8, a plurality (six) of sub-carriages 5 can be attached to the carriage 6 of this embodiment. As shown in FIGS. 9 and 10, a plurality of recording heads 7 are arranged in a staggered manner in each sub-carriage 5. In addition to the plurality of recording heads 7, each sub-carriage 5 includes a substrate and the like, and a sub-carriage fan 21 for cooling the substrate is provided. The sub-carriage fan 21 suppresses a temperature rise inside the sub-carriage 5 by sending (air blowing) an air current to the inside of the sub-carriage 5. Therefore, if the ink mist is around the sub-carriage fan 21, May be sent into the sub-carriage 5 and mist may adhere to the substrate or the like. For this reason, the recording apparatus 1 of the present embodiment is provided with a frame-shaped portion 37 for suppressing mist from rising up to the periphery of the sub-carriage fan 21.

  As shown in FIG. 9, the carriage 6 is provided with a frame-shaped portion 37 that surrounds the recording heads 7 provided in the six sub-carriages 5 (see FIG. 7). The frame-shaped part 37 suppresses the mist generated when the liquid is discharged from the recording head 7 from diffusing from the periphery of the recording head 7 to the upper side of the sub-carriage fan 21. In other words, the frame-shaped portion 37 serves as a separator that keeps the upper region of the sub-carriage 5 in a region with little mist.

<Configuration of capture unit>
The carriage 6 includes capturing units 38 a and 38 b that capture mist generated when liquid is ejected from the recording head 7 on at least one side of the recording head 7 serving as an ejection unit in the main scanning direction B. As shown in FIGS. 9 and 10, the capturing portions 38 a and 38 b of the present embodiment are provided on both sides of the recording head 7 provided in the six sub-carriages 5 via frame-like portions 37.

The capturing portions 38a and 38b extend along the sub-scanning direction A that intersects the main scanning direction B, and a capturing port 43 is provided on the surface facing the medium. Specifically, the capturing portions 38 a and 38 b have a substantially rectangular parallelepiped shape, and extend along the sub-scanning direction A on both sides of the frame-shaped portion 37 in the main scanning direction B. In the sub-scanning direction A, an opening 39 is provided on one end surface of the capturing portions 38a and 38b, and an opening 40 is provided on the other end surface opposite to the one end side. Furthermore, a trapping port 43 (hatched portion in FIG. 10) extending from the opening 39 to the opening 40 is provided on the surface (bottom surface) facing the adhesive belt 2 (see FIG. 1) that supports the medium.
In addition, the structure of the capture port 43 of this embodiment is an example, and is not limited to this structure. The capturing port 43 only needs to have an opening wider than the width of the recording head 7 when viewed from the main scanning direction. Further, the capture port 43 may have a configuration in which a plurality of holes are provided along the sub-scanning direction A, and the opening is separated by providing a lid member in the boundary region between the capture port 43 and the opening 40. It may be a configuration.

Next, the internal configuration of the capturing units 38a and 38b will be described.
Fig.11 (a) is sectional drawing in the CC line of the capture | acquisition part 38a shown in FIG. FIG.11 (b) is sectional drawing in the DD line of the capture | acquisition part 38a shown in FIG. In addition, since the capture part 38a and the capture part 38b are symmetrically configured with the recording head 7 interposed therebetween, the capture part 38a will be described in the following description.

  As illustrated in FIG. 11, the capturing unit 38 a includes a capturing unit 61 that captures mist. The capturing unit 61 of the present embodiment is provided on the inner surface 51 facing the capturing port 43. The capturing unit 38 a includes a carriage fan 20 as a fan that generates an airflow toward the capturing unit 61. Specifically, the carriage fan 20 is provided on one end side in the sub-scanning direction A. In the present embodiment, the carriage fan 20 is provided on the opening 39 side as one end side in the sub-scanning direction A, and is indicated by an arrow in FIG. 11A from the opening 39 toward the capture unit 61 and reaching the opening 40. Generate airflow.

  In addition, the capturing unit 38 a includes a liquid guiding unit 55 that overlaps the capturing port 43 in plan view between the capturing port 43 and the inner surface 51 that faces the capturing port 43. The liquid guiding portion 55 is inclined toward the inner side surface 52 of the capturing portion 38a. As shown in FIG. 11 (b), the capturing part 38 a extends from the inner surface (inner top surface) 51 where the capturing part 61 is formed, the inner side surface 52 located on the frame-shaped part 37 side, and the frame-shaped part 37. It has an inner surface including an inner bottom surface 53a that forms one bottom surface of the capturing portion 38a and an inner bottom surface 53b that forms the other bottom surface with the capturing port 43 interposed therebetween. The liquid guiding part 55 of the present embodiment is provided at the opening end of the capturing port 43 of the inner bottom surface 53a. The distal end portion 55 a to the proximal end portion 55 b of the liquid guiding portion 55 are inclined toward the inner surface 52, and when the capturing port 43 is viewed from the inner top surface 51, the upper portion of the capturing port 43 is covered with the liquid guiding portion 55. Yes.

Next, the capture of mist when the carriage 6 performs main scanning in the B1 direction shown in FIG.
The mist generated when the liquid is discharged from the recording head 7 is sucked into the capturing unit 38 a from the capturing port 43 of the capturing unit 38 a and captured by the capturing unit 61. Specifically, as described above, the carriage fan 20 is provided on the opening 39 side as one end side in the sub-scanning direction A, and the carriage fan 20 has an air flow from the opening 39 toward the capture unit 61 to the opening 40. Is generated. Due to this air flow and the internal configuration of the capturing portion 38a, an upward air flow indicated by an arrow in FIG. 11B from the capturing port 43 toward the capturing portion 61 is generated in the vicinity of the capturing port 43.

  The recording head 7 is located on the downstream side in the main scanning direction B (B1 direction) as viewed from the capturing unit 38a. When the carriage 6 moves in the B1 direction, the capturing unit 38a determines the position through which the recording head 7 has passed. Pass immediately after. The mist generated by the discharge of the liquid from the recording head 7 is taken into the capturing part 38a by the rising air current from the capturing port 43 of the capturing part 38a that passes immediately after that, and the mist collides with the capturing part 61. By doing so, it adheres to the capture part 61. As a result, most of the mist generated when the liquid is ejected from the recording head 7 is captured immediately after the occurrence, so that the mist floating inside the recording apparatus 1 can be reduced.

  Further, the carriage fan 20 is provided on the opening 39 side as one end side in the sub-scanning direction A, and indirectly generates a rising airflow that causes the gas containing mist to move from the capture port 43 to the capture unit 61. . In other words, since the carriage fan 20 does not suck the gas containing mist, the carriage fan 20 can be prevented from being contaminated with the mist, and the mist can be attached to the capture unit 61.

  The carriage fan 20 can be driven by the control of the control unit 23 so that the wind speed when the carriage 6 is stopped is faster than the wind speed when the carriage 6 is moving in the main scanning direction. If the wind speed of the carriage fan 20 is increased in a state where the liquid is ejected from the recording head 7, there is a possibility that the landing deviation of the droplet may occur. Therefore, in the recording apparatus 1 of the present embodiment, while the carriage 6 that discharges liquid from the recording head 7 is moving, the carriage fan 20 is driven at a wind speed that does not cause droplet landing deviation, and the carriage does not discharge liquid. During stoppage 6, control is performed to increase the wind speed of the carriage fan 20. Thereby, it is possible to improve the effect of attaching the mist captured by the capturing unit 38 a to the capturing unit 61 while the carriage 6 is stopped.

  Further, if a large amount of mist adheres to the capture unit 61, the mist becomes liquid and further drops, and may drop from the capture port 43 to the outside of the capture unit 38a. Therefore, in the present embodiment, a liquid guiding portion 55 that covers the upper side of the capturing port 43 is provided. Further, the inner bottom surfaces 53a and 53b of the capturing part 38a have a bowl shape capable of holding a droplet (liquid). The liquid droplet dropped from the capture unit 61 toward the capture port 43 lands on the liquid guide unit 55 and is guided along the inclination of the liquid guide unit 55 to the inner bottom surface 53a of the capture unit 38a. As a result, the droplets dropped from the capture unit 61 are held by the inner bottom surfaces 53a and 53b, so that the mist becomes droplets and drops from the capture port 43 to the outside of the capture unit 38a. It is possible to prevent the medium from being contaminated. Moreover, since mist (liquid) is hold | maintained at the bowl-shaped inner bottom surfaces 53a and 53b, a liquid can be collect | recovered easily. Further, the liquid guiding part 55 also has a function as a rectifying plate for ascending airflow from the capturing port 43 toward the capturing part 61.

Note that the recording apparatus 1 includes the recovery unit 13 (see FIG. 3) that collects the mist that has flowed out from the opening 40 by flowing into the recovery port 16 by the airflow generated in the blower unit 12, but the recording according to the present embodiment. Since the apparatus 1 captures most of the mist in the capturing portions 38a and 38b, the mist that diffuses inside the recording apparatus 1 from the opening 40 to the recovery port 16 can be suppressed.
In addition, since the recording apparatus 1 of the present embodiment performs bidirectional printing, the carriage 6 is configured to include the capturing units 38a and 38b on both sides of the recording head 7 in the main scanning direction B. In the case of an apparatus or the like, a configuration in which a capturing unit is provided on at least one side of the recording head 7 may be used.
In the recording apparatus 1 of the present embodiment, the carriage fan 20 of both the capturing units 38 a and 38 b is driven by the control of the control unit 23 when the carriage 6 moves in any of the main scanning directions B. However, the driving method of the carriage fan 20 is not limited to this. However, it is preferable to execute a driving method for driving the carriage fan 20 on the upstream side (rear side) in the main scanning direction B of the carriage 6.

As described above, according to the recording apparatus 1 as the liquid ejection apparatus according to the present embodiment, the following effects can be obtained.
The carriage 6 of the recording apparatus 1 includes capturing portions 38 a and 38 b that capture mist generated when liquid is ejected from the recording head 7. The capturing portions 38a and 38b include a capturing port 43 that captures mist, a capturing portion 61 that attaches the captured mist, and a carriage fan 20 that generates an upward air flow from the capturing port 43 toward the capturing portion 61. Yes. Since the capturing portions 38a and 38b are located on both sides of the recording head 7, the mist generated when the liquid is discharged from the recording head 7 is captured by the capturing portion 38a or the capturing portion 38b that passes immediately after that. And adheres to the capture unit 61. Thereby, since most of the mist is captured immediately after the occurrence, the mist floating inside the recording apparatus 1 is reduced, and the inside of the recording apparatus 1 and the medium can be prevented from being contaminated by the mist. . Therefore, it is possible to provide a liquid ejection device with improved image quality.

In addition, the capture units 38 a and 38 b overlap the capture port 43 in plan view between the capture port 43 and the inner surface facing the capture port 43 and are inclined toward the inner surface 52. 55. As a result, when a large amount of mist adheres to the capture unit 61, the droplet that drops from the capture unit 61 toward the capture port 43 is held by the inner bottom surface 53a. It is possible to prevent the inside of the recording apparatus 1 and the medium from being contaminated by dripping from 43 to the outside of the capturing portion 38a.
The carriage fan 20 can be driven such that the wind speed when the carriage 6 is stopped is faster than the wind speed when the carriage 6 is moving. By increasing the wind speed of the carriage fan 20 while the carriage 6 is stopped, the effect of adhering the mist captured by the capturing unit 38a to the capturing unit 61 can be improved.
Moreover, since the carriage fan 20 is provided on one end side of the opening 39 and does not directly suck the gas containing mist, the carriage fan 20 can be prevented from being contaminated with mist.

  Note that the present invention is not limited to the above-described embodiment, and various modifications and improvements can be added to the above-described embodiment. A modification will be described below.

(Modification 1)
FIG. 12 is a cross-sectional view taken along the line DD of the capturing portion 38a illustrated in FIG.
Hereinafter, a recording apparatus 1 as a liquid ejection apparatus according to Modification 1 will be described. In addition, about the component same as embodiment, the same number is attached | subjected and the overlapping description is abbreviate | omitted.

  As shown in FIG. 12, the capture unit 161 has an absorbent material 162 that adsorbs mist. The capture unit 161 is provided on the inner surface 51 facing the capture port 43, and the capture unit 161 is provided with a porous member such as a fiber or a sponge as the absorbent material 162. The mist rides on the rising air flow indicated by the arrow in FIG. 12 from the trap opening 43 and is taken into the trap portion 38a. The mist collides with the absorber 162 of the trap portion 161 and is adsorbed by the absorber 162. By providing the capturing part 161 with the absorbent 162, it is possible to capture mist efficiently.

(Modification 2)
13 is a cross-sectional view taken along line DD of the capturing portion 38a illustrated in FIG.
Hereinafter, a recording apparatus 1 as a liquid ejection apparatus according to Modification 2 will be described. In addition, about the component same as embodiment, the same number is attached | subjected and the overlapping description is abbreviate | omitted.

  As shown in FIG. 13, the capture part 261 has a fin-shaped uneven part 262. The capturing part 261 is provided on the inner surface 51 that faces the capturing port 43, and the capturing part 261 is provided with an uneven part 262 that is formed by corrugating metal. As the material of the uneven portion 262, stainless steel having excellent corrosion resistance is preferably used. The mist rides on the rising air flow shown by the arrow in FIG. 13 from the capture port 43 and is taken into the capture part 38a, and the mist collides with the uneven part 262 provided in the capture part 261, thereby adhering to the uneven part 262. . By providing the catching part 261 with the concavo-convex part 262, it is possible to catch mist efficiently.

(Modification 3)
14A is a cross-sectional view taken along the line EE of the capturing portion 38a illustrated in FIG. FIG.14 (b) is sectional drawing in the DD line of the capture | acquisition part 38a shown in FIG.
Hereinafter, a recording apparatus 1 as a liquid ejection apparatus according to Modification 3 will be described. In addition, about the component same as embodiment, the same number is attached | subjected and the overlapping description is abbreviate | omitted.

As shown in FIG. 14, the capture unit 361 is provided on the inner side surface that intersects the surface on which the capture port 43 is provided. Specifically, the capture portion 361 is provided on the inner side surface 52 that intersects the plane formed by the inner bottom surfaces 53 a and 53 b where the capture ports 43 are provided and is located on the frame-like portion 37 side. The carriage fan 20 is provided on the opening 39 side as one end side in the sub-scanning direction A, and generates an air flow indicated by an arrow in FIG. 14A from the opening 39 toward the capturing unit 361 and reaching the opening 40. With this airflow, the carriage fan 20 indirectly generates an airflow indicated by an arrow in FIG. 14B that directs the gas containing mist from the capturing port 43 to the inside of the capturing portion 38 a and toward the capturing portion 361. . The mist rides on the airflow indicated by the arrow in FIG. 14B and is taken into the capturing part 38a, and the mist collides with the capturing part 361 and adheres to the capturing part 361 (inner side surface 52). Since the capturing part 361 is provided on the inner surface 52, even if a large amount of mist adheres to the capturing part 361 and becomes liquid, the liquefied mist is held by the inner bottom surface 53 a along the inner surface 52. There is no need to provide the liquid guiding portion 55. Thereby, it is possible to prevent the mist captured by the capturing unit 361 from flowing out from the capturing port 43 and contaminating the inside of the recording apparatus 1 and the medium.
Here, the capturing part 361 may be provided with the absorbent material 162 and the concavo-convex part 262 as in the first and second modifications.
In addition, although the capturing unit 361 has been described as the inner side surface 52, an inclined surface that connects the inner top surface 51 and the inner side surface 52 may be provided and used as the capturing unit 361.

  DESCRIPTION OF SYMBOLS 1 ... Recording device, 2 ... Adhesive belt, 3 ... Conveying mechanism, 4 ... Recording mechanism, 5 ... Subcarriage, 7 ... Recording head, 8 ... Drive roller, 9 ... Driven roller, 10a, 10b ... Rail, 11a, 11b DESCRIPTION OF SYMBOLS ... Pipe, 12 ... Air blower, 13 ... Recovery part, 14 ... Air blower fan, 15 ... Suction fan, 16 ... Recovery port, 23 ... Control part, 24 ... CPU, 25 ... System bus, 26 ... ROM, 27 ... RAM, 28 ... head drive unit, 29 ... motor drive unit, 34 ... input / output unit, 35 ... PC, 37 ... frame-like portion, 38a, 38b ... capture unit, 39,40 ... opening portion, 43 ... capture port, 51 ... inner surface (Inner top surface), 52 ... inner side surface, 53a, 53b ... inner bottom surface, 55 ... liquid guide part, 55a ... tip part, 55b ... base end part, 61, 161, 261, 361 ... capture part, 162 ... absorbent material , 262 ... uneven portions.

Claims (8)

A carriage that can move a discharge unit that discharges liquid to the medium in the main scanning direction;
The carriage includes a capturing unit that captures mist generated when the liquid is ejected from the ejection unit on at least one side of the ejection unit in the main scanning direction.
The capturing portion has a rectangular shape and extends along a sub-scanning direction intersecting the main scanning direction, and is opposed to the capturing port and an inner bottom surface provided with a capturing port facing the medium. A parallel inner surface facing the medium, an inner surface intersecting the inner surface, and a fan ,
The inner surface is provided with a capture unit for capturing the mist as a droplet by attaching the droplet and capturing the droplet .
The liquid ejecting apparatus , wherein the fan generates an air flow toward the capturing unit . The liquid ejecting apparatus according to claim 1 , wherein the fan is provided on one end side of the capturing unit in the sub-scanning direction. The capture unit, a liquid ejecting apparatus according to claim 1 or claim 2, characterized in that, having an absorbent material for absorbing the mist. The capture unit, a liquid ejecting apparatus according to have a fin-like uneven portions, claim 1, wherein any one of claims 3. The capture unit includes a liquid guiding unit at a position overlapping the capture port in a plan view between the capture port and the inner surface facing the capture port. apparatus according to any one of claims 4 to claim 1. The liquid ejecting apparatus according to claim 5 , wherein the liquid guiding portion is inclined toward the inner surface of the capturing portion. The fan, rather than wind speed during movement to the main scanning direction of the carriage, according to claim claim 1, towards the wind speed during the stop of the carriage, it is drivable so fast, characterized by apparatus according to any one of 6.   A carriage that can move a discharge unit that discharges liquid to the medium in the main scanning direction;
  The carriage includes a capturing unit that captures mist generated when the liquid is ejected from the ejection unit on at least one side of the ejection unit in the main scanning direction.
  The capturing portion has a rectangular shape and extends along a sub-scanning direction intersecting the main scanning direction, and is opposed to the capturing port and an inner bottom surface provided with a capturing port facing the medium. A parallel inner surface facing the medium, and an inner surface intersecting the inner surface,
  The inner surface has an absorbing material that absorbs the mist, and is provided with a capturing section that captures the mist by forming the mist as a droplet and attaching the droplet to the absorbing material. Discharge device.

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