Printing apparatus

Abstract

To provide a printer capable of saving a space.SOLUTION: A blowing part has a first blowing channel that can blow gas to a blowing port. A second blowing part has a second blowing channel that can blow gas to the first blowing channel, and a communication port that communicates the second blowing channel to the first blowing channel. The second blowing channel has a larger cross-sectional area blowing the gas than the first blowing channel. The first blowing part is located downstream of a carriage in a carrying direction of a medium and upstream of a treatment part in the carrying direction of the medium. A part or the whole of the second blowing part is located between a housing and the treatment part in a direction along a scanning direction of the carriage. The first blowing part and the second blowing part are provided at positions facing each other in the carrying direction of the medium in a first specified area in the scanning direction of the carriage. The communication port is located at least in the first specified area.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a printing device that performs printing by ejecting a liquid onto a medium. [Background technology]

[0002] For example, Patent Document 1 discloses a printing device that prints on a medium by moving a carriage in a scanning direction and ejecting liquid onto the medium from a print head mounted on the carriage. In this printing device, a blower that blows gas is provided downstream of the carriage in the medium transport direction to dry the medium after printing. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-206368 Summary of the Invention [Problem to be solved by the invention]

[0004] However, there is a demand for space-saving in such printing devices, and there is room for improvement in order to achieve space-saving in the configuration, particularly in the direction in which the medium is transported. [Means for solving the problem]

[0005] A printing device that solves the above problem includes a transport unit configured to transport a medium in a transport direction, a print head configured to perform printing by ejecting liquid onto the medium transported by the transport unit, a carriage that mounts the print head and is movable in a scanning direction, an air blower that can blow air onto the medium after printing by the print head, a processing unit that performs processing related to the medium, and a housing that accommodates the transport unit, the print head, the carriage, the air blower, and the processing unit, wherein the air blower has a first air blower that can blow gas, a second air blower that can blow gas to the first air blower, an air flow generation unit that generates air flows in the first air blower and the second air blower, and an air outlet that can blow gas from the first air blower onto the medium after printing, and the first air blower The second air blowing unit has a first air flow path capable of blowing gas to an air outlet, and the second air blowing unit has a second air flow path capable of blowing gas to the first air flow path and a communication port that connects the second air flow path to the first air flow path, the second air flow path having a larger cross-sectional area for blowing gas than the first air flow path, the first air blowing unit is located downstream in the medium transport direction from the print head and upstream in the medium transport direction from the processing unit, part or all of the second air blowing unit is located between the housing and the processing unit in a direction along the scanning direction of the carriage, the first air blowing unit and the second air blowing unit are provided in positions facing each other in the medium transport direction in a first specific area along the scanning direction of the carriage, and the communication port is located in at least the first specific area. [Brief explanation of the drawings]

[0006] [Figure 1] FIG. 1 is a perspective view of a printing device. [Figure 2] FIG. 1 is a schematic diagram illustrating a printing device. [Figure 3] FIG. 1 is a schematic diagram illustrating a printing device. [Figure 4] FIG. 2 is a cross-sectional view showing a printing device. [Figure 5] FIG. 2 is a top view showing the printing device. [Figure 6] FIG. 4 is a cross-sectional view showing a second blower section. [Figure 7]FIG. 3 is a cross-sectional view showing a first blower and a second blower. [Figure 8] FIG. 3 is a perspective view showing a first blower section. [Figure 9] FIG. 4 is a front view showing the first blower section. [Figure 10] FIG. 3 is a cross-sectional view showing a first blower and a second blower. [Figure 11] FIG. [Figure 12] FIG. DETAILED DESCRIPTION OF THE INVENTION

[0007] [First embodiment] An embodiment of a printing device will be described below with reference to the drawings. The printing device of this embodiment is a serial inkjet printer. In the drawings, the printing device is placed on a horizontal surface, with the direction of gravity indicated by the Z axis, and directions along the horizontal surface indicated by the X and Y axes. The X, Y, and Z axes are perpendicular to one another. Furthermore, the direction parallel to the X axis may be referred to as the width direction X, the direction parallel to the Y axis may be referred to as the transport direction Y, and the direction parallel to the Z axis may be referred to as the vertical direction Z.

[0008] <Configuration of Printer 11> 1, the printing device 11 includes a housing 12. The housing 12 houses various components of the printing device 11. The housing 12 may house a roll R. The roll R is formed by winding a long medium M into a cylindrical shape.

[0009] The housing 12 may include an opening 13. The opening 13 opens to the front surface of the housing 12. The housing 12 may include an outlet 14. The outlet 14 is provided above the opening 13 on the front surface of the housing 12. The outlet 14 is where the printed medium M is discharged.

[0010] The printing device 11 may include a feeding unit 16. The feeding unit 16 feeds out the medium M from the roll R. The feeding unit 16 can be pulled out of the housing 12 through the opening 13. The feeding unit 16 may include a front plate 17 and a pair of support walls 18. The front plate 17 forms part of the exterior of the printing device 11 when housed in the housing 12. The pair of support walls 18 support the roll R so that it can rotate freely.

[0011] The printing device 11 may include a storage unit 19. The storage unit 19 is a box with a bottom that is open on the upper side in the vertical direction Z. The storage unit 19 can store cutting chips that have been cut off from the long medium M. The storage unit 19 may be detachably attached to the housing 12.

[0012] <Internal configuration of the printing device 11> 2, the printing device 11 includes a transport path 20 indicated by a dashed line. The transport path 20 is a passageway capable of transporting the medium M. The transport path 20 extends from the feed unit 16 located at the most upstream position to the discharge port 14 located at the most downstream position.

[0013] The printing device 11 includes a conveying unit 21, a support unit 22, a printing unit 23, a blower unit 24, and a cutting unit 25. The conveying unit 21, the support unit 22, the printing unit 23, the blower unit 24, and the cutting unit 25 are housed in a housing 12.

[0014] The transport unit 21 is configured to transport the medium M in a transport direction Y along the transport path 20. The transport direction Y can be said to be the transport direction of the medium M. The transport path 20 includes a supply path 20A, a reversing path 20B, and a discharge path 20C. If the position where printing is performed by the printing unit 23 is designated as a printing position P1, the supply path 20A is a path connecting the payout unit 16 and the printing position P1. The reverse path 20B is a path connecting a branch point P2 that branches off from the supply path 20A and a junction point P3 that joins the supply path 20A upstream of the branch point P2. The discharge path 20C is a path on the transport path 20 that connects the printing position P1 and the discharge outlet 14.

[0015] Conveying unit 21 may unwind medium M from roll R and convey it. Conveying unit 21 may include, in order from upstream of supply path 20A, a supply roller pair 26, a reversing roller 27, multiple driven rollers 28, and an upstream conveying roller pair 29. Driven roller 28 is rotatably provided and rotates in a driven manner with medium M sandwiched between it and reversing roller 27.

[0016] The conveying section 21 has, in order from upstream to downstream of the discharge path 20C, a downstream conveying roller pair 30, a first roller pair 31, and a second roller pair 32. The first roller pair 31 is located upstream of the cutting section 25 on the conveying path 20. The first roller pair 31 includes a drive roller 31A and a driven roller 31B. The second roller pair 32 is located downstream of the cutting section 25 on the conveying path 20. In this way, the first roller pair 31 and the second roller pair 32 are located on either side of the cutting section 25 in the conveying direction Y, and press the printed medium M.

[0017] The supply roller pair 26, the reversing roller 27, the driven roller 28, the upstream transport roller pair 29, the downstream transport roller pair 30, the first roller pair 31, and the second roller pair 32 rotate while sandwiching the medium M to transport the medium M. The transport unit 21 is driven to rotate in the forward direction to transport the medium M from upstream to downstream, and is driven to rotate in the reverse direction to transport the medium M from downstream to upstream.

[0018] The support unit 22 is configured to support the medium M transported by the transport unit 21. The support unit 22 supports the portion of the medium M that is to be printed by the printing unit 23 from below in the vertical direction Z. The support unit 22 has a support surface 22A that supports the medium M. The support surface 22A has a surface that intersects perpendicularly with the vertical direction Z. The support surface 22A is located below the print head 35, which will be described later, in the vertical direction Z.

[0019] The printing device 11 includes a guide shaft 33. The guide shaft 33 is provided so as to extend in the width direction X. The printing unit 23 is configured to print on the medium M supported by the support unit 22. The printing unit 23 includes a carriage 34 and a print head 35. The carriage 34 is capable of reciprocating movement in the width direction X along the guide shaft 33. In other words, the width direction X is a direction along the scanning direction in which the carriage 34 moves, and corresponds to an example of the scanning direction in which the carriage 34 moves.

[0020] The print head 35 is mounted on the carriage 34. The print head 35 is provided below the carriage 34. The print head 35 is a serial head type that ejects liquid as the carriage 34 moves in the width direction X. The liquid may be, for example, ink. The liquid may be, for example, one color or multiple colors.

[0021] The print head 35 has a nozzle surface 36 and a plurality of nozzles 37. The nozzle surface 36 is the surface facing the support surface 22A of the support part 22. A plurality of nozzles 37 are formed in the nozzle surface 36. The plurality of nozzles 37 are capable of ejecting liquid. In this manner, the print head 35 is configured to be able to eject liquid from the plurality of nozzles 37 onto the medium M. In other words, the print head 35 is configured to perform printing by ejecting liquid onto the medium M supported by the support part 22.

[0022] The printing unit 23 includes a carriage motor 38. The carriage motor 38 is mounted on the carriage 34. The carriage motor 38 is a drive source for moving the carriage 34 in the width direction X.

[0023] The air blowing unit 24 is capable of blowing air to the printed medium M. The air blowing unit 24 is located downstream of the printing position P1 on the transport path 20 and upstream of the discharge port 14. The air blowing unit 24 is located above the printed medium M transported on the transport path 20 in the vertical direction Z. The air blowing unit 24 is configured to dry the printed medium M by blowing gas to the printed medium M.

[0024] The cutting unit 25 is configured to cut the medium M after printing. The cutting unit 25 is located downstream of the printing position P1 on the transport path 20 and upstream of the discharge port 14. The cutting unit 25 is located above the storage unit 19 that is attached to the housing 12. The cutting unit 25 is also located below the air blower 24, but downstream of the air blower port 44, which will be described later, in the transport direction Y. In this embodiment, the cutting unit 25 corresponds to an example of a processing unit that performs processing on the medium M.

[0025] Specifically, the cutting unit 25 includes a movable blade 39, a fixed blade 40, and a guide member 41. The movable blade 39 has a cutting edge extending in the width direction X that intersects with the conveying path 20. The movable blade 39 is attached so as to be movable along the cutting edge of the fixed blade 40. The fixed blade 40 has a cutting edge extending in the width direction X that intersects with the conveying path 20. The guide member 41 is provided so as to extend along the cutting edge of the fixed blade 40. The guide member 41 guides the movement of the movable blade 39. The cutting unit 25 cuts the medium M across the width direction X by the movable blade 39 moving back and forth in a direction along the cutting edge of the fixed blade 40 at the position of the cutting edge of the fixed blade 40 in the conveying path 20. In this way, the cutting unit 25 is able to cut the printed medium M pressed by the first roller pair 31 and the second roller pair 32.

[0026] The printing device 11 includes a control unit 42. The control unit 42 may comprehensively control the driving of each mechanism in the printing device 11 and control various operations performed by the printing device 11. The control unit 42 may include one or more processors that execute various processes according to a computer program, one or more dedicated hardware circuits such as application-specific integrated circuits that execute at least some of the various processes, or a combination thereof. The processor includes a CPU and memory. The memory is RAM, ROM, etc., and stores program code or instructions configured to cause the CPU to execute processes. The memory, i.e., computer-readable medium, includes any readable medium that can be accessed by a general-purpose or special-purpose computer.

[0027] <Configuration of Printing Department 23> Here, the printing unit 23 will be described with reference to FIG. 3, the area A0 of the carriage 34 can be divided into a first area A1, a second area A2, and a third area A3. The first area A1, the second area A2, and the third area A3 are all different areas, and are divided in the transport direction Y in a plan view.

[0028] The first region A1 is a region of the region A0 that is located in the center in the conveying direction Y. The second region A2 is a region of the region A0 that is downstream of the first region A1 in the conveying direction Y. In other words, the second region A2 is located downstream of the first region A1 in the conveying direction Y, and is the most downstream region of the region A0 in the conveying direction Y. The third region A3 is a region of the region A0 that is upstream of the first region A1 in the conveying direction Y. In other words, the third region A3 is located upstream of the first region A1 in the conveying direction Y, and is the most upstream region of the region A0 in the conveying direction Y.

[0029] The first area A1 is an area that has the print head 35. In this way, the print head 35 is mounted in the first area A1, not in the second area A2 or the third area A3. The nozzle surface 36 of the print head 35 forms the bottom surface of the first area A1. The nozzle surface 36 is located a first distance D1 in the vertical direction Z from a reference plane RP that includes the support surface 22A.

[0030] The second area A2 is an area including a supply flow path (not shown) and a control board. The supply flow path is a flow path for supplying liquid to the multiple nozzles 37. The control board is a board on which electronic components for controlling the carriage 34 are mounted.

[0031] The bottom surface 34A of the second region A2 is located a second distance D2 from the reference plane RP in the vertical direction Z. The second distance D2 is longer than the first distance D1. In other words, the bottom surface 34A of the second region A2 is located a longer distance from the support surface 22A in the vertical direction Z than the nozzle surface 36 in the first region A1. This provides a larger space below the bottom surface 34A of the second region A2 in the vertical direction Z than below the nozzle surface 36 of the first region A1 in the vertical direction Z. In this way, the second region A2 is located farther from the reference plane RP than the first region A1.

[0032] The third area A3 is an area that includes the carriage motor 38. A bottom surface 34B of the third area A3 is located at a third distance D3 from the reference plane RP in the vertical direction Z. The third distance D3 is longer than the first distance D1 and shorter than the second distance D2.

[0033] <Configuration of blower section 24> Next, the blower 24 will be described with reference to Figures 3 and 4. Figure 4 is a cross-sectional view of the carriage 34 and the blower 24 as viewed from the width direction X. In Figure 4, part of the blower flow path 43 is omitted to make it easier to understand the invention.

[0034] 3 and 4, the air blowing unit 24 is capable of blowing gas for drying the medium M after printing. The air blowing unit 24 includes an air blowing flow path 43 and an air blowing port 44. The air blowing flow path 43 is a flow path that is capable of blowing gas for drying the medium M after printing. As will be described in detail later, the air blowing flow path 43 is provided to extend along the width direction X.

[0035] The air outlet 44 is located at the lower end of the air blowing section 24 in the vertical direction Z, and at an upstream part of the air blowing section 24 in the transport direction Y. The air outlet 44 is provided to extend along the width direction X. The air outlet 44 communicates with the air blowing flow path 43. The air outlet 44 is an opening that opens toward the medium M after printing. In this way, the air outlet 44 can blow gas from the air blowing flow path 43 to the medium M after printing.

[0036] As shown in FIG. 4, the air blowing section 24 includes a partition wall 45. The partition wall 45 is located upstream of the air outlet 44 in the transport direction Y. The partition wall 45 is provided to extend along the vertical direction Z. In particular, the partition wall 45 is provided upstream of the air outlet 44 in the transport direction Y and extends downward in the vertical direction Z from the air outlet 44. In other words, the partition wall 45 is provided to extend from the air outlet 44 toward the printed medium M. The partition wall 45 includes a first surface 45A. The first surface 45A is a surface on the downstream side in the transport direction Y. The first surface 45A blocks the blowing of gas from the air outlet 44.

[0037] In this way, the partition wall 45 separates the area where the blower 24 is located from the area where the carriage 34 is located. In other words, the partition wall 45 has the function of blocking the blowing of gas from the blowing port 44 and making it difficult for the gas blown from the blowing port 44 to flow upstream in the transport direction Y. The partition wall 45 is also used as a member that forms the blowing flow path 43 and the blowing port 44.

[0038] The partition wall 45 includes a protrusion 46. The protrusion 46 is provided at a lower end 45B of the partition wall 45. The protrusion 46 protrudes downstream in the transport direction Y between the air outlet 44 and the medium M after printing.

[0039] An upper surface 46A of the protrusion 46 is positioned so as to face a partial area of ​​the air outlet 44 in the vertical direction Z. As a result, the protrusion 46 blocks the gas blown from the air outlet 44 and guides it downstream in the conveyance direction Y. In other words, the protrusion 46 functions as a barrier that makes it difficult for the gas blown from the air outlet 44 to flow upstream in the conveyance direction Y.

[0040] The air outlet 44 is located at a fourth distance D4 from the reference plane RP in the vertical direction Z. The fourth distance D4 is longer than the first distance D1. In other words, the air outlet 44 is located farther from the reference plane RP than the nozzle surface 36. The fourth distance D4 is also shorter than the second distance D2.

[0041] The lower end 45B of the partition 45 and the protrusion 46 are positioned a fifth distance D5 from the reference plane RP in the vertical direction Z. The fifth distance D5 is longer than the first distance D1. That is, the partition 45 and the protrusion 46 are provided at a position farther from the nozzle surface 36 than the reference plane RP. The fifth distance D5 is also shorter than the second distance D2.

[0042] Furthermore, a portion of the air outlet 44, the partition wall 45, and the protrusion 46 are provided in a position that overlaps with the second area A2 of the carriage 34 in the vertical direction Z. The fourth distance D4 and the fifth distance D5 are shorter than the second distance D2. In this manner, the portion of the air outlet 44, a portion of the partition wall 45, and the protrusion 46 are located between the bottom surface 34A of the second area A2 of the carriage 34 and the printed medium M. In other words, the air blower 24 is provided so that a portion of the air outlet 44 is located between the second area A2 of the carriage 34 and the printed medium M.

[0043] It can also be said that a portion of the air outlet 44, the partition wall 45, and the protrusion 46 overlap a portion of the second area A2 in a plan view. In other words, as will be described in detail later with reference to FIG. 5, the air blower 24 is provided so as to overlap a portion of the movement area MA of the carriage 34 in a plan view. The air blower 24 is provided at a position overlapping a portion of the movement area MA of the carriage 34 in a plan view, such that a portion of the air outlet 44 is located between the second area A2 of the carriage 34 and the printed medium M. In other words, the air blower 24 is provided so that a portion of the air outlet 44 overlaps a portion of the movement area MA of the carriage 34 in a plan view.

[0044] <Positional Relationship Between the Carriage 34, the Blower 24, and the Cutting Unit 25> Next, the positional relationship between the carriage 34, the blower 24, and the cutting unit 25 will be described with reference to Fig. 5. Fig. 5 is a view of the carriage 34, the blower 24, and the cutting unit 25 as viewed from above in the vertical direction Z.

[0045] 5, the carriage 34 is capable of reciprocating movement in the width direction X along the guide shaft 33. The carriage 34 is capable of moving in the width direction X across a movement area MA. The movement area MA of the carriage 34 is a range in the width direction X that is longer than the width W of the medium M and crosses the medium M.

[0046] The air blower 24 is located downstream of the print head 35 of the carriage 34 in the transport direction Y. The air blower 24 is provided to extend in the width direction X. The air blower 24 is fixed to a member (not shown) and is provided so as not to move relative to the housing 12. In other words, the air blower 24 does not move in conjunction with the movement of the carriage 34.

[0047] In a plan view, a portion of the air blowing section 24 overlaps with a portion of the movement area MA of the carriage 34. More specifically, in a plan view, a portion of the air blowing section 24 overlaps with a portion of the second area A2 of the movement area MA of the carriage 34. In this way, the air blowing section 24 is provided so as to overlap with a portion of the movement area MA of the carriage 34 in a plan view.

[0048] The air blowing section 24 includes a first air blowing section 47 and a second air blowing section 48. The first air blowing section 47 is capable of blowing gas. The second air blowing section 48 is capable of blowing gas to the first air blowing section 47 for drying the medium M after printing. This allows the first air blowing section 47 to blow the gas from the second air blowing section 48 to the air blowing port 44. The air blowing port 44 is capable of blowing the gas from the first air blowing section 47 to the medium M after printing.

[0049] The first air blowing section 47 is provided to extend in the width direction X. The first air blowing section 47 is longer than the width W of the medium M in the width direction X and is provided to traverse the medium M. The width W of the medium M is the maximum width of the medium M that can be transported through the transport path 20. The first air blowing section 47 is positioned so as to partially overlap the second area A2 of the movement area MA of the carriage 34 in a plan view. The first air blowing section 47 is also positioned downstream in the transport direction Y of the first area A1 of the movement area MA of the carriage 34. In other words, the first air blowing section 47 is positioned downstream in the transport direction Y of the print head 35. The first air blowing section 47 is positioned upstream in the transport direction Y of the cutting section 25.

[0050] The second air blowing section 48 is provided to extend in the width direction X. The second air blowing section 48 is provided so as to be shorter than the width W of the medium M in the width direction X, not to reach the center C of the width W of the medium M, and not to cross the medium M. The second air blowing section 48 is located downstream of the first air blowing section 47 in the transport direction Y.

[0051] The second air blowing section 48 is provided at a position overlapping with the first air blowing section 47 in the first overlapping area DA1 when viewed from downstream in the conveying direction Y. The first overlapping area DA1 is an area along the width direction X. In this way, the first air blowing section 47 and the second air blowing section 48 are provided at positions facing each other in the conveying direction Y in the first overlapping area DA1. The first overlapping area DA1 corresponds to an example of a first specific area. A portion of the second air blowing section 48 is located between the cutting section 25 and the housing 12 in the width direction X.

[0052] The cutting unit 25 is provided to extend in the width direction X. The cutting unit 25 is longer than the width W of the medium M in the width direction X and is provided to traverse the medium M. The cutting unit 25 is located downstream of the carriage 34 in the transport direction Y. The cutting unit 25 is located downstream of the first blower 47 in the transport direction Y.

[0053] The printing device 11 includes an exhaust unit 49. The exhaust unit 49 is capable of exhausting gas. In particular, the exhaust unit 49 is capable of exhausting gas from a printing position P1 where printing is performed on the medium M and from an area where the medium M is transported after printing.

[0054] The exhaust section 49 is provided to extend in the width direction X. The exhaust section 49 is shorter than the width W of the medium M in the width direction X, does not reach the center C of the width W of the medium M, and is provided so as not to cross the medium M. The exhaust section 49 is located downstream of the first blower section 47 in the transport direction Y.

[0055] The exhaust unit 49 is provided at a position overlapping with the first air blowing unit 47 in the second overlapping area DA2 when viewed from downstream in the conveying direction Y. The second overlapping area DA2 is an area along the width direction X. In this way, the first air blowing unit 47 and the exhaust unit 49 are provided at positions facing each other in the conveying direction Y in the second overlapping area DA2. The exhaust unit 49 is provided at a position opposite the second air blowing unit 48 with the cutting unit 25 interposed between the cutting unit 25 and the housing 12 in the width direction X. The second overlapping area DA2 corresponds to an example of a second specific area.

[0056] <Configuration of second blower section 48> Next, the second blower 48 will be described with reference to Fig. 6 and Fig. 7. Fig. 6 is a cross-sectional view of the second blower 48 viewed from above in the vertical direction Z. In the drawings, within the width direction X, the right direction as viewed from downstream in the conveyance direction Y may be referred to as the first width direction X1, and the left direction as viewed from downstream in the conveyance direction Y may be referred to as the second width direction X2. Fig. 7 is a cross-sectional view of the first blower 47 and the second blower 48 viewed from the starting point side of the second width direction X2.

[0057] 6, the second blower 48 is tubular and includes a second air-blowing flow path 50 capable of blowing gas. The second air-blowing flow path 50 is included in the air-blowing flow path 43. The second air-blowing flow path 50 is provided to extend in the width direction X. The second air-blowing flow path 50 is formed by the inner wall of the second blower 48.

[0058] The second air blowing section 48 has an opening 51. The opening 51 is provided at one end 48A of the second air blowing section 48. The opening 51 is included in the second air-blowing flow path 50. The opening 51 opens in the second width direction X2. The opening 51 takes in outside air from outside the housing 12 via a flow path not shown.

[0059] The second air blowing section 48 has a communication opening 52. The communication opening 52 is provided at the other end 48B of the second air blowing section 48. The communication opening 52 is included in the second air blowing flow path 50. The communication opening 52 opens toward upstream in the transport direction Y in the second air blowing section 48. The communication opening 52 is located in the first overlapping area DA1. The communication opening 52 connects the second air blowing flow path 50 to the first air blowing flow path 63 of the first air blowing section 47.

[0060] The blower 24 includes an airflow generating unit 53. The airflow generating unit 53 may be located downstream of the opening 51 in the second air-blowing flow path 50. The airflow generating unit 53 generates an airflow in response to being driven. The airflow generating unit 53 may be a blower fan. The airflow generating unit 53 is provided to blow air in the first width direction X1. The airflow generating unit 53 takes in air from the opening 51 into the second air-blowing flow path 50, and blows the gas in the second air-blowing flow path 50 out of the communication opening 52.

[0061] The air blowing unit 24 includes a heater 54. The heater 54 may be located downstream of the airflow generating unit 53 in the second air blowing flow path 50 of the second air blowing unit 48. The heater 54 is a PTC (Positive Temperature Coefficient) heater. A PTC heater generates heat when an electric current is passed through it, and once it has risen to a certain temperature, it can maintain that temperature. Furthermore, a PTC heater is a heater that can be made compact. In this way, the heater 54 raises the temperature of the gas in the second air blowing flow path 50. As a result, the heater 54 promotes drying of the medium M after printing.

[0062] The second air blowing section 48 has an inner wall 55 downstream in the conveyance direction Y that has an arc shape at the other end 48B of the second air blowing section 48. The second air-blowing channel 50 is formed such that the width of the second air-blowing channel 50 as seen from the width direction X narrows as it progresses in the first width direction X1. In other words, the second air blowing section 48 blows gas from the opening 51 along the second air-blowing channel 50 in the first width direction X1 when the airflow generating section 53 is driven, but the gas is guided upstream in the conveyance direction Y by the inner wall 55.

[0063] As shown in FIGS. 6 and 7 , the second air blowing section 48 has an inclined surface 56. The inclined surface 56 is provided at the bottom of the inner wall at the other end 48B of the second air blowing section 48. The inclined surface 56 is inclined at the other end 48B of the second air blowing section 48 so as to descend upstream in the transport direction Y to the communication opening 52. In other words, the second air blowing flow path 50 is configured to incline downward in the vertical direction Z toward the communication opening 52. As a result, the second air blowing flow path 50 guides the gas so as to descend along the inclined surface 56 to the communication opening 52. The inclined surface 56 is inclined in two stages, but this is not limited to this.

[0064] As will be described in detail later, the second air-blowing flow path 50 communicates with the first air-blowing flow path 63 of the first air blowing section 47 via the communication port 52. This allows the airflow generating section 53 to blow gas in the second air-blowing flow path 50 to the first air blowing section 47 via the communication port 52. In this way, it can be said that the airflow generating section 53 generates airflows in the first air blowing section 47 and the second air blowing section 48.

[0065] The second air blowing section 48 is configured so that the minimum cross-sectional area of ​​the second air blowing flow path 50 as viewed from the width direction X is 30% or more of the maximum cross-sectional area of ​​the second air blowing flow path 50 as viewed from the width direction X, and more preferably is 50% or more of the maximum cross-sectional area of ​​the second air blowing flow path 50 as viewed from the width direction X. Furthermore, the second air blowing section 48 is configured so that the cross-sectional area of ​​the communication opening 52 as viewed from the transport direction Y is 20% or more of the maximum cross-sectional area of ​​the second air blowing flow path 50 as viewed from the width direction X. Furthermore, the second air blowing flow path 50 has a larger cross-sectional area for blowing gas than the first air blowing flow path 63.

[0066] <Configuration of first blower section 47> Next, the first blower 47 will be described with reference to Figs. 7 to 10. Fig. 8 is a perspective view of the first blower 47. Fig. 9 is a front view of the first blower 47 as seen from downstream in the transport direction Y. In Fig. 9, to facilitate understanding of the invention, the blower opening 44 and the communication opening 52 are indicated by oblique lines at different angles. Fig. 10 is a cross-sectional view of the first blower 47 and the second blower 48 as seen from above in the vertical direction Z.

[0067] As shown in FIGS. 7 to 9, the first air blowing section 47 is provided to extend in the width direction X. More specifically, the first air blowing section 47 includes a main body 61. The main body 61 has a thin plate shape. The main body 61 is provided to extend along a plane including the width direction X and the vertical direction Z. The main body 61 is provided to extend in the width direction X. The main body 61 includes a lower end portion 61A and a contact surface 61B. The main body 61 is provided so that the contact surface 61B, which is located downstream of the lower end portion 61A in the conveying direction Y, abuts against the outer wall of the second air blowing section 48 in the first overlapping region DA1.

[0068] The first blower 47 includes an inclined portion 62. The inclined portion 62 has a thin plate shape. The inclined portion 62 is provided so as to extend in the width direction X. The inclined portion 62 is provided at a lower end portion 61A of the main body portion 61. The inclined portion 62 is inclined so as to descend upstream in the conveying direction Y.

[0069] The inclined portion 62 has an inclined surface 62A. The inclined surface 62A is a surface on the downstream side in the conveying direction Y. The inclined portion 62 is provided in the first overlapping region DA1 such that the inclined surface 62A is located upstream of the communication port 52 in the conveying direction Y. As a result, the inclined portion 62 guides the gas from the communication port 52 of the second blower 48 downward in the vertical direction Z.

[0070] The first blowing section 47 includes the partition wall 45 described above. The partition wall 45 is provided so as to extend in the width direction X. The partition wall 45 is provided at the lower end portion 62B of the inclined portion 62. The partition wall 45 includes the protruding portion 46 described above. The protruding portion 46 is provided so as to extend in the width direction X.

[0071] The first air blowing section 47 includes a first air blowing flow path 63 capable of blowing gas. The first air blowing flow path 63 is included in the air blowing flow path 43. The first air blowing flow path 63 is provided to extend in the width direction X. The first air blowing flow path 63 is formed by at least the inclined surface 62A of the inclined portion 62 and the first surface 45A of the partition wall 45. The first air blowing flow path 63 communicates with the second air blowing flow path 50 via the communication port 52. The first air blowing flow path 63 communicates with the air blowing port 44. In this way, the first air blowing flow path 63 can blow gas from the second air blowing flow path 50 to the air blowing port 44.

[0072] The first air blowing section 47 includes the above-mentioned air blowing opening 44. The air blowing opening 44 is formed by at least the first surface 45A of the partition wall 45. The air blowing opening 44 is provided so as to extend in the width direction X. The air blowing opening 44 is also formed by a guide section 64 and the outer wall of the second air blowing section 48, which will be described later. The air blowing opening 44 communicates with the first air blowing flow path 63.

[0073] The first air blowing section 47 may include a guide section 64. The guide section 64 is provided in the first air blowing area BA1 in the width direction X. The guide section 64 is not provided in the second air blowing area BA2 in the width direction X. The first air blowing area BA1 communicates with the communication opening 52. The second air blowing area BA2 does not communicate with the communication opening 52. The first air blowing area BA1 is an area closer to the communication opening 52 in the width direction X than the second air blowing area BA2.

[0074] The guide portion 64 protrudes downstream in the conveyance direction Y from the first surface 45A of the partition wall 45. The guide portion 64 is provided in the first air blowing flow path 63. The guide portion 64 is provided to extend in the width direction X. The guide portion 64 has an upper surface 64A. The upper surface 64A of the guide portion 64 is located lower in the vertical direction Z than the communication port 52. The upper surface 64A of the guide portion 64 guides the gas from the communication port 52 in the first width direction X1. As a result, the guide portion 64 guides the gas from the communication port 52 in the first width direction X1.

[0075] The guide portion 64 is inclined downward in the width direction X as it moves away from the communication port 52. In other words, the guide portion 64 is inclined so as to move closer to the printed medium M as it moves away from the communication port 52 in the width direction X. As a result, the guide portion 64 guides the gas from the communication port 52 downward in the vertical direction Z as it moves away from the communication port 52 in the width direction X.

[0076] As shown in FIG. 10, in some areas of the second air blowing area BA2 where the guide section 64 is not located, the first surface 45A of the partition wall 45 and the second air blowing section 48 are separated by a sixth distance D6. Note that the second air blowing section 48 does not have to be disposed in some areas of the second air blowing area BA2 where the guide section 64 is not located. On the other hand, in the first air blowing area BA1 where the guide section 64 is located, the end of the guide section 64 and the second air blowing section 48 are separated by a seventh distance D7. The seventh distance D7 is smaller than the sixth distance D6. In this way, the guide section 64 has the function of adjusting the amount of gas blown downward in the vertical direction Z from the communication port 52.

[0077] <Configuration of exhaust section 49> Next, the exhaust unit 49 will be described with reference to Figures 11 and 12. Figure 11 is a cross-sectional view of the exhaust unit 49 seen from above in the vertical direction Z. Figure 12 is a top view of the holding unit 77 seen from above in the vertical direction Z.

[0078] 11, the exhaust section 49 includes a third blower section 71. The third blower section 71 is provided so as to extend in the width direction X. The third blower section 71 is capable of blowing gas. The third blower section 71 is tubular and includes an exhaust flow path 72 that can exhaust gas. The exhaust flow path 72 is provided to extend in the width direction X. The exhaust flow path 72 is formed by the inner wall of the third blower section 71.

[0079] The third blower 71 includes an intake port 73. The intake port 73 is provided at one end 71A of the third blower 71. The intake port 73 is included in the exhaust flow path 72. The intake port 73 opens downward in the vertical direction Z in the third blower 71. In particular, when the printed medium M is transported through the transport path 20, the intake port 73 opens toward the printed medium M. In other words, the intake port 73 is configured to be able to suck gas between the exhaust unit 49 and the printed medium M into the exhaust flow path 72.

[0080] Furthermore, the air intake 73 is located downstream of the air outlet 44 in the conveying direction Y. Therefore, when the air intake 73 is located downstream of the air outlet 44 in the conveying direction Y, the gas from the air outlet 44 is less likely to flow upstream in the conveying direction Y than when the air intake 73 is located upstream of the air outlet 44 in the conveying direction Y.

[0081] The third blower 71 has an opening 74. The opening 74 is provided at the other end 71B of the third blower 71. The opening 74 is included in the exhaust flow path 72. The opening 74 opens toward the first width direction X1. The opening 74 exhausts the gas in the exhaust flow path 72 to the outside of the housing 12 via a flow path (not shown).

[0082] The exhaust unit 49 includes an exhaust flow generating unit 75. The exhaust flow generating unit 75 may be located upstream of the opening 74 in the exhaust flow path 72. The exhaust flow generating unit 75 generates an airflow in response to driving. The exhaust flow generating unit 75 may be a blower fan. The exhaust flow generating unit 75 is provided to blow air in the first width direction X1. The exhaust flow generating unit 75 draws air from the intake port 73 into the exhaust flow path 72, and exhausts the gas in the exhaust flow path 72 from the opening 74. In this way, the exhaust flow generating unit 75 generates an airflow in the third blower unit 71.

[0083] The third blower 71 has an inner wall 76 at the downstream side in the conveyance direction Y that slopes downstream in the conveyance direction Y from one end 71A side to the other end 71B side of the third blower 71. The exhaust flow path 72 is formed so that the width of the exhaust flow path 72 increases as viewed in the width direction X toward the other end 71B of the third blower 71. In this way, the third blower 71 exhausts gas from the intake port 73 along the exhaust flow path 72 by driving the exhaust flow generating unit 75.

[0084] <Configuration of holding portion 77> The printing device 11 also includes a holding unit 77. The holding unit 77 is disposed along the cutting unit 25 at least in the width direction X, and is located below the exhaust unit 49 in the vertical direction Z. In particular, the holding unit 77 is located at least below the air intake 73 in the vertical direction Z. Furthermore, when the printed medium M is transported along the transport path 20, the holding unit 77 is located above the printed medium M in the vertical direction Z. In other words, the holding unit 77 is located between the air intake 73 and the printed medium M.

[0085] 12, the holding portion 77 holds the driven roller 31B of the first roller pair 31. The driven roller 31B is rotatably attached to a rotation shaft 31C. The holding portion 77 holds the rotation shaft 31C, thereby rotatably holding the driven roller 31B.

[0086] The driven roller 31B is located downstream of the print head 35 in the transport direction Y and upstream of the cutting unit 25 in the transport direction Y. Like the driven roller 31B, the holding unit 77 is located downstream of the print head 35 in the transport direction Y and upstream of the cutting unit 25 in the transport direction Y.

[0087] The drive roller 31A and the driven roller 31B are an example of rollers for transporting the printed medium M. The drive roller 31A and the driven roller 31B press the printed medium M to be cut by the cutting unit 25.

[0088] The holding portion 77 has a through hole 78. The through hole 78 penetrates in the vertical direction Z. In other words, the through hole 78 faces the intake port 73 and the printed medium M between the intake port 73 and the printed medium M. The through hole 78 is formed not to hold the driven roller 31B and the rotation shaft 31C, but to suppress a decrease in the amount of air taken into the intake port 73. There may be one or more through holes 78.

[0089] <Operation of the First Embodiment> The operation of the first embodiment will be described. 5, the second air blowing section 48 is located between the cutting section 25 and the housing 12 in the width direction X. The exhaust section 49 is located between the cutting section 25 and the housing 12 in the width direction X, on the opposite side of the cutting section 25 from the second air blowing section 48.

[0090] The air blowing unit 24 is located downstream of the print head 35 of the carriage 34 and upstream of the cutting unit 25 in the transport direction Y. In particular, the first air blowing unit 47 is located downstream of the print head 35 of the carriage 34 and upstream of the cutting unit 25 in the transport direction Y.

[0091] The first air blowing section 47 is positioned so as to overlap, in a plan view, a portion of the movement area MA of the carriage 34. More specifically, the first air blowing section 47 is positioned so as to overlap, in a plan view, a portion of the second area A2 of the movement area MA of the carriage 34. In such a case, as shown in FIG. 4, a portion of the air blowing port 44 is positioned between the second area A2 of the carriage 34 and the printed medium M.

[0092] In this way, the first air blowing section 47 can be disposed at a position close to the carriage 34 in the transport direction Y. In particular, by positioning the second air blowing section 48 and the exhaust section 49 between the cutting section 25 and the housing 12 in the width direction X, the first air blowing section 47 can be disposed at a position close to the carriage 34 in the transport direction Y. In addition, the cutting section 25 can be disposed at a position close to the carriage 34 in the transport direction Y.

[0093] 6, an airflow is generated by driving the airflow generating unit 53. More specifically, driving the airflow generating unit 53 causes gas from outside the housing 12 to flow into the second air-blowing flow path 50 through the opening 51. The gas that has flowed into the second air-blowing flow path 50 through the opening 51 flows in the first width direction X1 along the second air-blowing flow path 50. The temperature of the gas flowing through the second air-blowing flow path 50 is increased by the heater 54 to promote drying of the medium M after printing.

[0094] When the gas flows into the second air-blowing channel 50 in the first width direction X1, it changes its air-blowing direction toward the upstream side in the transport direction Y along the inner wall 55 downstream in the transport direction Y. Furthermore, when the gas flows into the second air-blowing channel 50 in the first width direction X1, it changes its air-blowing direction toward the downward side in the vertical direction Z along the inclined surface 56. As a result, in the second air-blowing channel 50, the gas flowing in the first width direction X1 changes its air-blowing direction toward the upstream side in the transport direction Y and toward the downward side in the vertical direction Z. Then, the gas in the second air-blowing channel 50 is blown to the first air-blowing channel 63 via the communication port 52 located upstream of the second air-blowing channel 50 in the transport direction Y.

[0095] Since a portion of the second air blowing section 48 is located between the cutting portion 25 and the housing 12 in the width direction X, the cross-sectional area through which the gas is blown can be made larger in the second air blowing flow path 50 than in the first air blowing flow path 63. Furthermore, in the second air blowing flow path 50 and the communication port 52, the cross-sectional area through which the gas is blown is smaller downstream of the gas blowing direction. In this case, by adjusting the cross-sectional area through which the gas is blown in the second air blowing flow path 50 and the communication port 52, the pressure loss of the gas to the first air blowing flow path 63 is not excessively increased.

[0096] 9, in the first air-blowing flow path 63, the gas flowing in from the second air-blowing flow path 50 through the communication opening 52 flows in the first width direction X1, but in an air-blowing direction that is upstream in the conveyance direction Y and downward in the vertical direction Z. The gas that has flowed into the first air-blowing flow path 63 is further changed in air-blowing direction downward in the vertical direction Z by the inclined surface 62A of the inclined portion 62.

[0097] In this case, in the first air-blowing region BA1 close to the communication port 52, the guide portion 64 reduces the amount of gas blown from the air outlet 44 and increases the amount of gas blown in the first width direction X1. In the first air-blowing region BA1 close to the communication port 52, the gas that has flowed into the first air-blowing channel 63 is guided downward in the vertical direction Z along the upper surface 64A of the guide portion 64 as it travels in the first width direction X1. In the second air-blowing region BA2 farther from the communication port 52, the guide portion 64 is not provided, and the gas is blown from the air outlet 44.

[0098] In this way, the volume of gas blown from the air outlet 44 can be adjusted in the first air blowing area BA1, which is close to the communication opening 52, and the second air blowing area BA2, which is far from the communication opening 52. For example, if the volume of gas blown from the air outlet 44 in the first air blowing area BA1 becomes too large, the volume of gas blown from the air outlet 44 in the second air blowing area BA2 will become small. On the other hand, if the volume of gas blown from the air outlet 44 in the first air blowing area BA1 becomes too small, the volume of gas blown from the air outlet 44 in the second air blowing area BA2 will become large. In this way, by providing the guide portion 64, the volume of gas blown from the air outlet 44 can be made uniform in the first width direction X1.

[0099] The gas from the air outlet 44 is blown downward in the vertical direction Z along the first surface 45A of the partition wall 45. The partition wall 45 is provided so as to extend downward in the vertical direction Z, upstream of the air outlet 44 in the transport direction Y. For this reason, the gas from the air outlet 44 is less likely to flow upstream of the air outlet 44 in the transport direction Y.

[0100] Furthermore, the protrusion 46 at the lower end 45B of the partition wall 45 makes it difficult for the gas from the air outlet 44 to flow upstream of the air outlet 44 in the transport direction Y. This prevents the gas from the air outlet 44 from having a significant effect on the print head 35 upstream of the air outlet 44 in the transport direction Y.

[0101] The first air blowing section 47 is located downstream of the print head 35 in the transport direction Y and upstream of the cutting section 25. Therefore, by making the cross-sectional area through which gas is blown smaller in the first air blowing flow path 63 than in the second air blowing flow path 50, it is possible to save space for the carriage 34, the air blowing section 24, and the cutting section 25.

[0102] 11 , an air flow is generated in the exhaust unit 49 by driving the exhaust flow generating unit 75. More specifically, by driving the exhaust flow generating unit 75, gas between the exhaust unit 49 and the printed medium M flows into the exhaust flow path 72 via the intake port 73. In this case, although the holding unit 77 is located between the intake port 73 and the printed medium M, the gas between the exhaust unit 49 and the printed medium M flows into the exhaust flow path 72 via the intake port 73 through the through-holes 78 of the holding unit 77, etc.

[0103] The gas that has flowed into the exhaust flow path 72 through the intake port 73 flows in the first width direction X1 along the exhaust flow path 72. When the gas that has flowed into the exhaust flow path 72 flows in the first width direction X1, the cross-sectional area through which the gas is blown along the inner wall 76 downstream in the transport direction Y increases, and the gas flows out through the opening 74 and is exhausted to the outside of the housing 12.

[0104] <Effects of the first embodiment> The effects of the first embodiment will be described. (1) The air blowing unit 24 is provided at a position that overlaps with part of the movement area MA of the carriage 34 in a plan view, with part of the air outlet 44 positioned between the carriage 34 and the printed medium M. This allows the air outlet 44 to be closer to the carriage 34. In other words, the air blowing unit 24 can be closer to the carriage 34. This makes it possible to achieve space savings in the transport direction Y for the positions of the air blowing unit 24 and the carriage 34. This makes it possible to achieve space savings in the printing device 11.

[0105] (2) In addition to this, the air blowing unit 24 is provided so as to extend along the width direction X and not to move. In this way, the air blowing unit 24 can be blown to the medium M after printing without being mounted on the carriage 34 which is movable in the width direction X. Therefore, it is possible to achieve space saving for the printing device 11 without affecting the movement of the carriage 34 in the width direction X.

[0106] (3) The air outlet 44 is located farther from the reference plane RP than the nozzle surface 36. This makes it difficult for the gas blown from the air outlet 44 to flow upstream in the transport direction Y. This makes it possible to reduce the space required for the printing device 11 without significantly affecting the ejection of liquid from the print head 35 upstream in the transport direction Y.

[0107] (4) The carriage 34 has a first region A1 where the print head 35 is mounted and a second region A2 located downstream of the first region A1 in the transport direction Y. The second region A2 is located farther from the reference plane RP than the first region A1. A portion of the air outlet 44 is located between the second region A2 of the carriage 34 and the printed medium M. Therefore, by providing a distance between the reference plane RP and the second region A2 where the print head 35 is not mounted, a space can be created between the second region A2 and the printed medium M where a portion of the air outlet 44 is located. In this way, by positioning the air outlet 44 closer to the carriage 34 in the second region A2 where the print head 35 is not mounted, space can be saved in the transport direction Y for the positions of the air blower 24 and the carriage 34. This allows for space-saving in the printing device 11.

[0108] (5) The air blowing unit 24 has a partition 45 that blocks the blowing of gas from the air outlet 44, and the partition 45 is provided upstream of the air outlet 44 in the transport direction Y, extending at least from the air outlet 44 toward the printed medium M. This makes it difficult for the gas blown from the air outlet 44 to flow upstream in the transport direction Y. This makes it possible to achieve space savings for the printing device 11 without significantly affecting the ejection of liquid from the print head 35 upstream in the transport direction Y.

[0109] (6) Furthermore, the gas whose temperature has been increased by the heater 54 is blown out from the air outlet 44, but the gas blown out from the air outlet 44 is less likely to flow upstream in the transport direction Y. This makes it possible to prevent the print head 35 from being heated upstream in the transport direction Y by the gas blown out from the air outlet 44. This makes it possible to achieve space savings for the printing device 11 without significantly affecting the print head 35.

[0110] (7) The partition wall 45 has a protrusion 46 that protrudes downstream in the transport direction Y between the air outlet 44 and the printed medium M. Therefore, the gas blown from the air outlet 44 is guided downstream in the transport direction Y by the protrusion 46, making it even more difficult for the gas to flow upstream in the transport direction Y. This makes it possible to reduce the space required for the printing device 11 upstream in the transport direction Y without significantly affecting the ejection of liquid from the print head 35.

[0111] (8) The protrusion 46 is located at a position farther from the nozzle surface 36 than the reference plane RP. Therefore, at a position farther from the nozzle surface 36 than the reference plane RP, the gas blown from the air outlet 44 is guided downstream in the transport direction Y by the protrusion 46, making it even more difficult for the gas to flow upstream in the transport direction Y. This makes it possible to reduce the space required for the printing device 11, without significantly affecting the ejection of liquid from the print head 35 upstream in the transport direction Y.

[0112] (9) The air blowing unit 24 includes a first air blowing unit 47 having a first air blowing flow path 63 and a second air blowing unit 48 having a second air blowing flow path 50. The second air blowing flow path 50 has a larger cross-sectional area for blowing gas than the first air blowing flow path 63 and can blow gas to the first air blowing flow path 63 through a communication port 52. The first air blowing unit 47 is located downstream of the print head 35 and upstream of the cutting unit 25 in the transport direction Y, and a portion of the second air blowing unit 48 is located between the housing 12 and the cutting unit 25 in the width direction X. The first air blowing unit 47 and the second air blowing unit 48 are disposed in positions facing each other in the transport direction Y in a first overlapping region DA1 along the width direction X, and the communication port 52 that connects the second air blowing flow path 50 to the first air blowing flow path 63 is located in the first overlapping region DA1. Therefore, the first air blowing section 47 is located downstream of the print head 35 and upstream of the cutting section 25 in the transport direction Y, and the carriage 34, air blowing section 24, and cutting section 25 can be brought closer to each other in the transport direction Y. This allows the printing device 11 to be made more space-saving.

[0113] (10) In addition to this, the second air blowing section 48, which has a larger cross-sectional area for blowing gas than the first air blowing flow path 63, is located between the housing 12 and the cutting section 25 in the width direction X. This allows the printer 11 to be made more compact while still ensuring the volume of gas blown into the first air blowing flow path 63.

[0114] (11) In addition to this, in the first overlapping region DA1 along the width direction X, the first air blowing section 47 and the second air blowing section 48 face each other in the transport direction Y, and can blow air from the second air blowing flow path 50 to the first air blowing flow path 63 through the communication opening 52. This prevents an excessive increase in pressure loss from the second air blowing flow path 50 to the first air blowing flow path 63. Therefore, the pressure loss caused by blowing air from the air blowing opening 44 does not increase excessively, and the printing device 11 can be made more compact.

[0115] (12) The second air blowing section 48 is configured so that the cross-sectional area of ​​the communication opening 52 is 20% or more of the maximum cross-sectional area of ​​the second air blowing flow path 50 as viewed in the width direction X. This prevents excessive increase in pressure loss from the second air blowing flow path 50 to the first air blowing flow path 63. This prevents excessive increase in pressure loss when blowing gas from the air blowing opening 44, thereby realizing space saving for the printing device 11.

[0116] (13) The second air blowing section 48 is configured so that the minimum cross-sectional area of ​​the second air blowing flow path 50 as viewed in the width direction X is 30% or more of the maximum cross-sectional area of ​​the second air blowing flow path 50 as viewed in the width direction X. This prevents excessive increase in pressure loss in the second air blowing flow path 50. This prevents excessive increase in pressure loss caused by blowing gas from the air outlet 44, thereby realizing space saving for the printing device 11.

[0117] (14) The heater 54 that raises the temperature of the gas in the second air flow path 50 is a PTC heater and is located in the second air flow path 50. This reduces the number of parts and the installation area for the heater 54, thereby realizing space savings for the printing device 11. In addition, the heater 54 can be easily controlled.

[0118] (15) The second air-blowing flow path 50 is configured to be inclined downward in the vertical direction Z toward the communication port 52. Therefore, in the second air-blowing flow path 50, gas can be blown downward in the vertical direction Z toward the communication port 52 that communicates with the first air-blowing flow path 63. This makes it possible to smoothly create an airflow downward in the vertical direction Z in the first air-blowing flow path 63. Therefore, it is possible to achieve space-saving for the printing device 11 without excessively increasing the pressure loss caused by blowing gas from the air outlet 44.

[0119] (16) The first air blowing section 47 has a guide portion 64 that guides the gas from the communication port 52 in the first air blowing flow path 63. The guide portion 64 extends in the width direction X and is inclined so as to approach the printed medium M as it moves away from the communication port 52 in the width direction X. Therefore, in the first air blowing flow path 63, the gas from the communication port 52 is guided in the width direction X. In addition, in the first air blowing flow path 63, the gas from the communication port 52 is guided so as to move closer to the printed medium M as it moves away from the communication port 52 in the width direction X. This makes it possible to equalize the amount of gas blown from the communication port 52 in the width direction X and further reduce pressure loss in the first air blowing flow path 63. Therefore, the printing device 11 can be made more compact without excessively increasing pressure loss caused by blowing gas from the air blowing port 44.

[0120] (17) When liquid is ejected from the print head 35 onto the medium M, the gas contains a relatively large amount of moisture at the printing position P1 and upstream of the printing position P1 in the transport direction Y. The printed medium M also contains moisture. In such a situation, the exhaust unit 49 can expel the gas between the printed medium M and the gas, thereby promoting drying of the printed medium M. Furthermore, the mist generated when the liquid is ejected from the print head 35 can also be exhausted to the outside of the housing 12 together with the gas.

[0121] The exhaust section 49 is provided between the housing 12 and the cutting section 25, at a position opposite the second air blowing section 48 with the cutting section 25 in between, and the first air blowing section 47 and the exhaust section 49 are provided at positions facing each other in the transport direction Y in a second overlapping area DA2 along the width direction X. The exhaust section 49 is located between the housing 12 and the cutting section 25 in the width direction X, at a position opposite the second air blowing section 48 with the cutting section 25 in between. This makes it possible to efficiently dry the medium M after printing and to achieve space-saving for the printing device 11.

[0122] (18) The holding unit 77 that holds the driven roller 31B of the first roller pair 31 is located downstream in the transport direction Y from the print head 35 and upstream in the transport direction Y from the cutting unit 25. The holding unit 77 is located between the intake port 73 of the exhaust unit 49 and the printed medium M, and has a through hole 78 provided between the intake port 73 and the printed medium M. Therefore, even when the holding unit 77 is located between the intake port 73 of the exhaust unit 49 and the printed medium M, gas between the exhaust unit 49 and the printed medium M can be sucked in from the intake port 73 via the through hole 78 provided in the holding unit 77. Therefore, the printer 11 can be made more compact without reducing the efficiency of exhausting gas between the exhaust unit 49 and the printed medium M.

[0123] [Example of change] This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility.

[0124] Although the cutting unit 25 is used as an example of a processing unit that processes the medium M after printing, this is not limiting. For example, a stacker may also be used as an example of a processing unit. The stacker is capable of loading the discharged medium M. In this case, the stacker is configured to be slidable, and may be pulled out to the outside of the housing 12 when in use, and stored inside the housing 12 when not in use. An example of a processing unit may also be an image reading unit that reads an image from the medium M. In other words, the processing unit is only required to perform processing related to the medium M, and may be a medium M after printing or a medium M unrelated to printing.

[0125] The through-holes 78 for communication do not have to be provided in the holding portion 77. The holding portion 77 does not have to be provided between the exhaust portion 49 and the medium M after printing. The support portion 22 may have a support surface 22A with a recess. In this case, the support surface 22A may have a surface that supports the medium M. The reference plane RP may include at least a portion of the support surface 22A, and it is preferable that the support surface 22A include the surface that supports the medium M.

[0126] Although the area A0 of the carriage 34 is divided into three areas, it is not limited to this and may be divided into two or four or more areas. The second region A2 may or may not be adjacent to the first region A1, as long as it is located downstream in the transport direction Y from the first region A1 in which the nozzle surface 36 is provided.

[0127] The second area A2 may be any area in which the print head 35 is not mounted, and may be, for example, an area in which the carriage motor 38 is mounted. A portion of the second air blowing section 48 may be located at a position overlapping with the first air blowing section 47 in the transport direction Y. In other words, a portion of the second air blowing section 48 may be located between the housing 12 and the first air blowing section 47 in the width direction X.

[0128] The second air blowing section 48 may have a communication opening in a region other than the first overlapping region DA1. As a specific example, when a portion of the second air blowing section 48 is located between the housing 12 and the first air blowing section 47 in the width direction X of the first air blowing section 47, the second air blowing section 48 may have a communication opening on a surface of the second air blowing section 48 that faces the first air blowing section 47 in the width direction X, in addition to the first overlapping region DA1. In this case, the communication opening may be formed continuously or divided into multiple openings.

[0129] The entire second air blowing section 48 may be located between the housing 12 and the cutting section 25 in the width direction X. In other words, it is sufficient that part or all of the second air blowing section 48 is located between the housing 12 and the cutting section 25 in the width direction X.

[0130] The airflow generating unit 53 may be provided outside the second air-blowing channel 50. In this case, the second blower 48 only needs to be able to take in the gas from the airflow generating unit 53 through the opening 51. The heater 54 may be provided outside the second air-blowing channel 50. The heater 54 may be provided upstream of the airflow generating unit 53 in the airflow direction.

[0131] The upper surface 64A of the guide portion 64 has the same distance from the partition wall 45 in the first air blowing area BA1, but this is not limited to this. For example, in the first air blowing area BA1, the distance from the partition wall 45 may become shorter as the air blowing area BA1 progresses in the first width direction X1.

[0132] The lower end 45B and the protrusion 46 of the partition wall 45 may be at the same distance as the nozzle surface 36 with respect to the reference plane RP, or may be closer than the nozzle surface 36. The protrusion 46 may be provided above the lower end 45B of the partition wall 45 in the vertical direction Z. Furthermore, a plurality of protrusions 46 may be provided on the partition wall 45 in the vertical direction Z.

[0133] The first blower 47 may have a communication port that communicates with the communication port 52 of the second blower 48. In other words, the first blower 47 may or may not have a communication port configuration as long as it can take in gas from the communication port 52 of the second blower 48.

[0134] The air outlet 44 may be formed by the configuration of the first air blower section 47, without using the configuration of the second air blower section 48. In other words, the air outlet 44 only needs to communicate with the first air blowing flow path 63 of the first air blower section 47, regardless of whether the entire area of ​​the air outlet 44 is formed only by the first air blower section 47.

[0135] The medium M does not have to be a long medium wound up as a roll R. The medium M may be paper, a synthetic resin film, cloth, nonwoven fabric, a laminated medium, or the like.

[0136] The liquid can be any liquid that can be applied to the medium M to record on the medium M. For example, ink includes particles of functional materials made of solids such as pigments or metal particles dissolved, dispersed, or mixed in a solvent, and includes various compositions such as water-based ink, oil-based ink, gel ink, and hot-melt ink.

[0137] The printing device 11 is not limited to a printer and may be a textile printing device. The printing device 11 may also be a multifunction device that has a scanning mechanism and a copying function in addition to a recording function. [Note] The technical concepts and effects that can be understood from the above-described embodiment and modified examples will be described below.

[0138] (A) A printing apparatus comprising: a transport unit configured to transport a medium in a transport direction; a support unit configured to support the medium transported by the transport unit; a print head configured to print by ejecting liquid onto the medium supported by the support unit; a carriage carrying the print head and movable in a scanning direction; and an air blower capable of blowing air onto the medium after printing by the print head, wherein the support unit has a support surface that supports the medium transported by the transport unit, and the air blower has an air flow path that can blow gas and an air outlet that can blow gas from the air flow path onto the medium after printing, the air blower extending along the scanning direction of the carriage and not moving, and the air blower is arranged at a position that overlaps with part of the movement area of ​​the carriage in a planar view, so that part or all of the air outlet is located between the carriage and the medium after printing.

[0139] This configuration allows the air outlet to be closer to the carriage. In other words, the air blower can be closer to the carriage. This allows for space savings in the media transport direction for the positions of the air blower and the carriage. Therefore, space savings can be achieved for the printing device.

[0140] In addition, the air blowing unit extends along the scanning direction of the carriage and is installed so as not to move. In this way, air can be blown to the medium after printing without having to be mounted on a carriage that can move in the scanning direction. Therefore, the printing device can be made more compact without affecting the movement of the carriage in the scanning direction.

[0141] (B) The print head may have a nozzle surface facing the support surface and a plurality of nozzles that eject liquid at the nozzle surface, and the air outlet may be located at a position farther from the nozzle surface than a plane that includes the support surface.

[0142] This configuration makes it difficult for the gas blown from the air outlet to flow upstream in the medium transport direction, thereby realizing space savings in the printing device without significantly affecting the ejection of liquid from the print head upstream in the medium transport direction.

[0143] (C) The print head has a nozzle surface facing the support surface and a plurality of nozzles that eject liquid from the nozzle surface, the carriage has, in a planar view, a first region and a second region different from the first region, the second region is located downstream of the first region in the medium transport direction, the print head is mounted in the first region without being mounted in the second region, the carriage is arranged so that the second region is farther away from a plane including the support surface than the first region, and the air blowing unit is arranged so that part or all of the air outlet is located between the second region of the carriage and the medium after printing.

[0144] With this configuration, by providing a distance between the second area where the print head is not mounted and the surface including the support surface, a space can be provided between the second area and the printed medium in which part or all of the air outlet is located. By positioning the air outlet closer to the carriage in the second area where the print head is not mounted, space can be saved in the transport direction of the medium with respect to the position of the air blower and the carriage. This allows for space-saving within the printing device.

[0145] (D) The air blowing section may have a partition that blocks the blowing of gas from the air outlet, and the partition may be arranged upstream of the air outlet in the medium transport direction, extending at least from the air outlet toward the medium after printing.

[0146] This configuration makes it difficult for the gas blown from the air outlet to flow upstream in the medium transport direction, thereby realizing space savings in the printing device without significantly affecting the ejection of liquid from the print head upstream in the medium transport direction.

[0147] (E) The partition wall may have a protruding portion that protrudes downstream in the transport direction of the medium between the air outlet and the printed medium. With this configuration, the protrusion guides the gas blown from the air outlet downstream in the medium transport direction, making it even more difficult for the gas to flow upstream in the medium transport direction. This makes it possible to reduce the space required for the printing device without significantly affecting the ejection of liquid from the print head upstream in the medium transport direction.

[0148] (F) The print head may have a nozzle surface facing the support surface and a plurality of nozzles that eject liquid at the nozzle surface, and the protrusion may be located at a position farther from the nozzle surface than a surface that includes the support surface.

[0149] With this configuration, the gas blown from the air outlet is guided downstream in the medium transport direction by the protrusion at a position farther from the nozzle face relative to the surface including the support surface, making it even more difficult for the gas to flow upstream in the medium transport direction. This makes it possible to achieve space-saving printing devices without significantly affecting the ejection of liquid from the print head upstream in the medium transport direction.

[0150] (G) The protrusion may be provided at the lower end of the partition wall. This configuration provides the same effects as (E) and (F). (H) A printing apparatus comprising: a transport unit configured to transport a medium in a transport direction; a print head configured to perform printing by ejecting a liquid onto the medium transported by the transport unit; a carriage that mounts the print head and is movable in a scanning direction; an air blower that can blow air onto the medium after printing by the print head; a processing unit that performs processing related to the medium; and a housing that accommodates the transport unit, the print head, the carriage, the air blower, and the processing unit, wherein the air blower has a first air blower that can blow gas, a second air blower that can blow gas to the first air blower, an air flow generating unit that generates air flows in the first air blower and the second air blower, and an air outlet that can blow gas from the first air blower onto the medium after printing, and the first air blower has the second air blowing section has a second air blowing flow path capable of blowing gas into the first air blowing flow path and a communication port that connects the second air blowing flow path to the first air blowing flow path, the second air blowing flow path having a larger cross-sectional area for blowing gas than the first air blowing flow path, the first air blowing section is located downstream of the print head in the medium transport direction and upstream of the processing section in the medium transport direction, part or all of the second air blowing section is located between the housing and the processing section in a direction along the scanning direction of the carriage, the first air blowing section and the second air blowing section are provided in positions facing each other in the medium transport direction in a first specific area along the scanning direction of the carriage, and the communication port is located in at least the first specific area.

[0151] With this configuration, the first air blowing unit is located downstream of the print head and upstream of the processing unit in the medium transport direction, allowing the carriage, air blowing unit, and processing unit to be closer to each other in the transport direction, thereby achieving space savings in the printing device.

[0152] In addition, a second air blowing section, which has a larger cross-sectional area for blowing gas than the first air blowing passage, is located between the housing and the processing section in the direction along the carriage scanning direction, thereby realizing space-saving in the printing device while ensuring the volume of gas blown into the first air blowing passage.

[0153] In addition, in the first specific region along the carriage scanning direction, the first and second air blowing units face each other in the medium transport direction, allowing air to be blown from the second air blowing path to the first air blowing path through the communication opening. This prevents excessive pressure loss from the second air blowing path to the first air blowing path. Therefore, the printing device can be made more compact without excessively increasing pressure loss caused by blowing air from the air blowing opening.

[0154] (I) The second air blowing section may be configured so that the cross-sectional area of ​​the communication opening as viewed from the medium transport direction is 20% or more of the maximum cross-sectional area of ​​the second air blowing flow path as viewed from a direction along the scanning direction of the carriage.

[0155] This configuration prevents excessive pressure loss from the second air flow path to the first air flow path, thereby reducing the space required for the printing device without excessively increasing pressure loss caused by blowing gas from the air outlet.

[0156] (J) The second air blowing section may be configured so that the minimum cross-sectional area of ​​the second air blowing flow path as viewed from a direction along the scanning direction of the carriage is 30% or more of the maximum cross-sectional area of ​​the second air blowing flow path as viewed from a direction along the scanning direction of the carriage.

[0157] This configuration prevents excessive pressure loss in the second air flow path, thereby reducing the space required for the printing device without excessively increasing the pressure loss caused by blowing gas from the air outlet.

[0158] (K) At least a portion of the first blowing section may be provided in a position that overlaps a portion of a movement area of ​​the carriage in a plan view. This configuration allows the first blower to be located closer to the carriage, thereby reducing the space required for the positioning of the blower and the carriage in the direction of transport of the medium, thereby reducing the space required for the printing device.

[0159] (L) The first air blowing section may have a partition wall that blocks the blowing of gas from the air blowing port, and the partition wall may be arranged upstream of the air blowing port in the medium transport direction, extending at least from the air blowing port toward the medium after printing.

[0160] This configuration makes it difficult for the gas blown from the air outlet to flow upstream in the medium transport direction, thereby realizing space savings in the printing device without significantly affecting the ejection of liquid from the print head upstream in the medium transport direction.

[0161] (M) The partition wall may have a protruding portion that protrudes downstream in the transport direction of the medium between the air outlet and the medium after printing. With this configuration, the protrusion guides the gas blown from the air outlet downstream in the medium transport direction, making it even more difficult for the gas to flow upstream in the medium transport direction. This makes it possible to reduce the space required for the printing device without significantly affecting the ejection of liquid from the print head upstream in the medium transport direction.

[0162] (N) The heating device may further include a heater that increases the temperature of the gas in the second air flow path, and the heater may be a PTC heater located in the second air flow path. This configuration reduces the number of parts and the heater installation area, thereby saving space in the printing device and making heater control easier.

[0163] (O) The second air-blowing channel may be configured to be inclined vertically downward toward the communication port. This configuration allows the second air-blowing passage to blow air vertically downward toward the communication port that communicates with the first air-blowing passage. This allows for a smooth vertically downward airflow in the first air-blowing passage. This allows for space-saving printing apparatuses without excessively increasing the pressure loss caused by blowing air from the air-blowing port.

[0164] (P) The first air blowing section may have a guide section that guides gas from the communication port in the first air blowing flow path, and the guide section may extend in a direction along the scanning direction of the carriage and be inclined so as to approach the printed medium as it moves away from the communication port in the direction along the scanning direction of the carriage.

[0165] According to this configuration, the gas from the communication port is guided in the first air flow path in the direction along the carriage scanning direction. Additionally, the gas from the communication port is guided in the first air flow path so that the gas approaches the printed medium as it moves away from the communication port in the direction along the carriage scanning direction. This makes it possible to equalize the amount of gas blown from the communication port in the direction along the carriage scanning direction, and furthermore, to reduce pressure loss in the first air flow path. Therefore, it is possible to achieve space savings in the printing device without excessively increasing pressure loss caused by blowing gas from the air outlet.

[0166] (Q) The printer may be provided with an exhaust section for exhausting gas, and part or all of the exhaust section may be located between the housing and the processing section, at a position opposite the second blowing section across the processing section, and the first blowing section and the exhaust section may be located at positions facing each other in the medium transport direction in a second specific area along the scanning direction of the carriage.

[0167] With this configuration, the exhaust unit is located between the housing and the processing unit in the direction along the carriage scanning direction, on the opposite side of the processing unit from the second air blowing unit, which allows the medium M to be dried efficiently after printing and also makes it possible to achieve space saving in the printing device.

[0168] (R) A printing apparatus comprising: a roller for transporting a printed medium; and a holding unit for holding the roller; the exhaust unit having an exhaust flow path capable of exhausting gas, an exhaust flow generating unit for exhausting gas in the exhaust flow path, and an intake port capable of drawing gas between the printed medium and the exhaust flow path into the exhaust flow path; the holding unit being located downstream of the print head in the medium transport direction and upstream of the processing unit in the medium transport direction; the roller pressing the printed medium as processing on the medium is performed by the processing unit; the holding unit being located between the intake port and the printed medium; and the holding unit having a through hole provided between the intake port and the printed medium.

[0169] With this configuration, even if the holder is located between the exhaust unit's intake port and the printed medium, the gas between the exhaust unit and the printed medium can be drawn in through the intake port via the through-holes provided in the holder, thereby achieving space savings for the printing device without reducing the efficiency of exhausting the gas between the exhaust unit and the printed medium. [Explanation of symbols]

[0170] A0...Area, A1...First area, A2...Second area, A3...Third area, BA1...First ventilation area, BA2...Second ventilation area, D1...First distance, D2...Second distance, D3...Third distance, D4...Fourth distance, D5...Fifth distance, D6...Sixth distance, D7 ...7th distance, DA1...1st overlap area, DA2...2nd overlap area, M...medium, MA...movement area, P1...printing position, P2...branch point, P3...merging point, R...roll body, RP...reference surface, X...width direction, Y...conveying direction, Z...vertical direction, 11...printing device position, 12...housing, 13...opening, 14...discharge port, 16...feeding section, 17...front plate section, 18...support wall, 19...storage section, 20...conveyance path, 20A...supply path, 20B...reversal path, 20C...discharge path, 21...conveyance section, 22...support section, 22A...support surface, 23...printing section, 24...air blowing section, 25...cutting section, 26...supply roller pair, 27...reversal roller, 28...driven roller, 29...upstream conveyance roller pair, 30...downstream conveyance roller pair, 31...first roller pair, 31A...drive roller, 31B ...driven roller, 31C...rotating shaft, 32...second roller pair, 33...guide shaft, 34...carriage, 34A, 34B...bottom surface, 35...print head, 36...nozzle surface, 37...nozzle, 38...carriage motor, 39...moving blade, 40...fixed blade, 41...guide member, 42...control unit, 43...air flow path, 44...air outlet, 45...partition wall, 45A...first surface, 45B...lower end, 46...protrusion, 46A...upper surface, 47...first air blowing section, 48...second air blowing section, 48A...one end, 48B...other end , 49...exhaust section, 50...second air flow path, 51...opening, 52...communication port, 53...air flow generating section, 54...heater, 55...inner wall, 56...inclined surface, 61...main body section, 61A...lower end section, 61B...contact surface, 62...inclined section, 62A...inclined surface, 62B...lower end section, 63...first air flow path, 64...guide section, 64A...upper surface, 71...third air flow section, 71A...one end section, 71B...other end section, 72...exhaust flow path, 73...air intake port, 74...opening, 75...exhaust flow generating section, 76...inner wall, 77...holding section, 78...through hole

Claims

1. a transport section configured to transport the medium in a transport direction; a print head configured to perform printing by ejecting liquid onto the medium transported by the transport unit; a carriage that carries the print head and is movable in a scanning direction; a blower capable of blowing air onto a medium printed by the print head; a processing unit that performs processing related to the medium; a housing that houses the transport unit, the print head, the carriage, the blower unit, and the processing unit; Equipped with the blower unit includes a first blower unit capable of blowing gas, a second blower unit capable of blowing gas to the first blower unit, an airflow generating unit that generates airflows in the first blower unit and the second blower unit, and an air outlet that can blow the gas from the first blower unit to the medium after printing; the first blower has a first blowing flow path capable of blowing gas to the blowing port, the second blower section has a second air blowing flow path capable of blowing gas to the first air blowing flow path, and a communication port that connects the second air blowing flow path to the first air blowing flow path, the second air flow path has a larger cross-sectional area for blowing gas than the first air flow path, the first air blowing unit is located downstream of the print head in the medium transport direction and upstream of the processing unit in the medium transport direction, and is configured to extend along the scanning direction of the carriage so as to traverse a maximum width of the medium that can be transported by the transport unit; the second air blowing unit is located downstream of the first air blowing unit in the medium transport direction, and is configured to extend along the scanning direction of the carriage from one end side of the maximum width of the medium that can be transported by the transport unit so as not to cross the maximum width of the medium; a part or the whole of the second blowing unit is located between the housing and the processing unit in a direction along the scanning direction of the carriage, the first air blowing section and the second air blowing section are provided in a first specific region along the scanning direction of the carriage, at positions facing each other in a transport direction of the medium, the first specific area includes an area extending in a scanning direction of the carriage from one end of a maximum width of the medium that can be transported by the transport unit toward the center of the medium, The communication port is located at least in the first specific region. A printing device characterized by:

2. 2. The printing device according to claim 1, the second blower is configured so that a cross-sectional area of ​​the communication port as viewed from the medium transport direction is 20% or more of a maximum cross-sectional area of ​​the second blower flow path as viewed from a direction along the scanning direction of the carriage. A printing device characterized by:

3. 3. The printing device according to claim 1, the second air blowing section is configured so that the minimum cross-sectional area of ​​the second air blowing flow path as viewed in a direction along the scanning direction of the carriage is 30% or more of the maximum cross-sectional area of ​​the second air blowing flow path as viewed in the direction along the scanning direction of the carriage. A printing device characterized by:

4. In the printing device according to any one of claims 1 to 3, At least a portion of the first air blowing section is provided so as to overlap a portion of a movement area of ​​the carriage in a plan view. A printing device characterized by:

5. In the printing device according to any one of claims 1 to 4, the first blower has a partition wall that blocks the blowing of gas from the blower port, the partition wall is provided upstream of the air outlet in the medium transport direction, and extends at least from the air outlet toward the printed medium. A printing device characterized by:

6. 6. The printing device according to claim 5, the partition wall has a protruding portion that protrudes downstream in the medium transport direction between the air outlet and the printed medium; A printing device characterized by:

7. In the printing device according to any one of claims 1 to 6, a heater that increases the temperature of the gas in the second air flow path, The heater is a PTC heater located in the second air flow path. A printing device characterized by:

8. The printing device according to any one of claims 1 to 7, The second air-blowing flow path is configured to be inclined downward in the vertical direction toward the communication port. A printing device characterized by:

9. In the printing device according to any one of claims 1 to 8, the first blower section has a guide section that guides the gas from the communication port in the first blower flow path, the guide portion extends in a direction along the scanning direction of the carriage, and is inclined so as to approach the printed medium as it moves away from the communication opening in the direction along the scanning direction of the carriage. A printing device characterized by:

10. The printing device according to any one of claims 1 to 9, an exhaust section for exhausting gas; the exhaust unit is located downstream of the first air blowing unit in the medium transport direction, and is configured to extend along the scanning direction of the carriage from the other end side of the maximum width of the medium that can be transported by the transport unit so as not to cross the maximum width of the medium; a part or the whole of the exhaust unit is provided between the housing and the processing unit in a direction along the scanning direction of the carriage, and at a position opposite to the second blower unit across the processing unit; the first blower and the exhauster are provided in a second specific area along the scanning direction of the carriage, at positions facing each other in a medium transport direction; the second specific area includes an area extending in a scanning direction of the carriage from the other end of the maximum width of the medium that can be transported by the transport unit toward the center of the medium, and does not overlap with the first specific area; A printing device characterized by:

11. 11. The printing device according to claim 10, a roller for transporting the medium after printing; a holding portion that holds the roller, the exhaust unit has an exhaust flow path capable of exhausting gas, an exhaust flow generating unit that exhausts the gas in the exhaust flow path, and an intake port that can suck gas between the medium and the exhaust flow path after printing, into the exhaust flow path; the holding unit is located downstream of the print head in a medium transport direction and upstream of the processing unit in the medium transport direction; the roller presses the printed medium, which is subjected to processing by the processing unit; the holding portion is located between the air intake and the printed medium, the holding section has a through hole provided between the air intake and the printed medium; A printing device characterized by:

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