Printer

Abstract

To provide a printer that can be configured with high quality.SOLUTION: A printer includes an outer duct 231 fixed to a second partition wall 220 to communicate with a suction part, and an inner duct 232 fixed to a housing 100 to be communicable with the outer duct 231, the inner duct 232 has an inner connection opening part 230A open toward a front side A to be connected to the outer duct 231, the outer duct 231 has an outer connection opening part 230B configured so as to be contactable with and separable from the inner connection opening part 230A due to opening / closing of an opening / closing cover 200, and in the inner connection opening part 230A, a first end part 230A1 close to a top surface 100a is closer to a rotation shaft 250 than a second end part 230A2 separate from the top surface 100a.SELECTED DRAWING: Figure 11

Description

[Technical Field]

[0001] The present invention relates to a printing device. [Background technology]

[0002] Patent document 1 discloses the configuration of an image forming device in which a ventilation duct fixed to the device body and an external duct fixed around a fulcrum are connected to form a ventilation path within the device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-167322 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the method described in Patent Document 1 has the problem that the external duct rubs against the ventilation duct when it is connected to and separated from it, causing wear at the openings of both ducts, which reduces the gas exhaust performance. [Means for solving the problem]

[0005] The printing device is housed in a housing and has a head that ejects liquid onto a medium, a first partition that forms part of the top surface of the housing, and a second partition that forms part of the front surface of the housing, an opening / closing cover that opens and closes the housing around a pivot axis, a suction unit that sucks gas inside the housing, an outer duct that is fixed to the second partition and communicates with the suction unit, and an inner duct that is fixed to the housing and can communicate with the outer duct, wherein the inner duct opens facing the front and has an inner connection opening that is connected to the outer duct, and the outer duct has an outer connection opening that is configured to be able to come into contact with and separate from the inner connection opening as the opening / closing cover is opened and closed, and the first end of the inner connection opening that is closer to the top surface is closer to the pivot axis than the second end that is further from the top surface. [Brief explanation of the drawings]

[0006] [Figure 1] FIG. 1 is a schematic diagram illustrating the configuration of a printing apparatus. [Figure 2] FIG. 1 is a perspective view showing the appearance of a printing apparatus. [Figure 3] 3 is a perspective view showing the printing device shown in FIG. 2 with the access cover open. FIG. [Figure 4] FIG. 4 is a perspective view showing the configuration when the opening / closing cover is closed. [Figure 5] FIG. 2 is a perspective view showing the configuration when the opening / closing cover is open. [Figure 6] FIG. 2 is a perspective view showing the configuration of an inner duct and a vertical duct. [Figure 7] FIG. [Figure 8] FIG. [Figure 9] FIG. 4 is a perspective view showing the configuration of a suction section and an outer duct. [Figure 10] FIG. 4 is a cross-sectional view showing the configuration of an inner duct and a vertical duct. [Figure 11] FIG. 4 is a side view showing the opening and closing of the opening and closing cover. DETAILED DESCRIPTION OF THE INVENTION

[0007] The configuration of the printing device 1 will be described below with reference to the drawings. In the following drawings, three mutually perpendicular axes will be referred to as the X-axis, Y-axis, and Z-axis. The direction along the X-axis will be referred to as the "X-direction," the direction along the Y-axis will be referred to as the "Y-direction," and the direction along the Z-axis will be referred to as the "Z-direction." The direction of the arrow is the + direction, and the direction opposite to the + direction is referred to as the - direction. Note that a view from the +Z direction or the -Z direction is also referred to as a planar view or planar.

[0008] First, the configuration of a printing device 1 will be described with reference to FIG.

[0009] As shown in FIG. 1, the printing device 1 includes a printing unit 3 and a control unit 13. The printing unit 3 performs printing by depositing ink on a medium 2. The control unit 13 is a controller that controls the printing device 1. The printing device 1 is an inkjet printer that prints images such as text and photographs on a medium 2, such as paper, by ejecting ink, which is an example of a liquid, onto the medium 2 as it is transported. The printing unit 3 is a serial type that performs printing while moving back and forth across the width of the medium 2. The printing unit 3 may also be configured as a line type that is provided across the width of the medium 2.

[0010] The printing device 1 includes a printing unit 3, a payout spindle 5, an upstream support unit 6, an upstream transport unit 7, a platen 8, a downstream transport unit 9, a downstream support unit 10, a take-up spindle 12, and a control unit 13. The upstream support unit 6, the upstream transport unit 7, the platen 8, the downstream transport unit 9, and the downstream support unit 10 are located on the transport path along which the medium 2 is transported.

[0011] The payout spindle 5 is a rod-shaped member extending along the X-axis. The payout spindle 5 is supported at both ends in the ±X directions by a frame or the like (not shown). The payout spindle 5 rotatably supports a roll 15 in which a long medium 2 is wound in a cylindrical shape. As the payout spindle 5 rotates, it pays out the medium 2 from the roll 15 toward the upstream support part 6.

[0012] The upstream support unit 6, platen 8, and downstream support unit 10 are members that support the long medium 2 transported in the transport direction. The medium 2 is transported along the surfaces of the upstream support unit 6, platen 8, and downstream support unit 10. The direction along the surfaces of the upstream support unit 6, platen 8, and downstream support unit 10 is the transport direction of the medium 2. The transport direction intersects with the X-axis. The upstream support unit 6, platen 8, and downstream support unit 10 are fixed to a frame (not shown) or the like that supports the entire printing device 1.

[0013] The upstream support unit 6 includes an upstream heating support unit 61, an upstream guide support unit 62, and an upstream heating unit 40. The upstream support unit 6 supports a portion of the medium 2 that is upstream in the transport direction of the portion facing the printing unit 3. The platen 8 is located downstream in the transport direction of the upstream support unit 6. The medium 2 supported by the upstream support unit 6 is transported to the platen 8 by an upstream transport unit 7. The upstream transport unit 7 is located downstream in the transport direction of the upstream support unit 6. The upstream transport unit 7 is also located upstream in the transport direction of the platen 8.

[0014] The upstream transport unit 7 has a first roller 71 and a second roller 72. The first roller 71 and the second roller 72 each extend along the X-axis. The upstream transport unit 7 has a motor (not shown). Power from the motor is transmitted to the second roller 72. The second roller 72 can be rotated by the power from the motor. The medium 2 is sandwiched between the first roller 71 and the second roller 72. The medium 2 can be transported by rotating the second roller 72 while the medium 2 is sandwiched between the first roller 71 and the second roller 72. The upstream transport unit 7 transports the medium 2 toward the platen 8.

[0015] In the printing device 1, the second roller 72 is a drive roller, and the first roller 71 is a driven roller. The drive roller is driven to rotate by power from a motor. The driven roller is driven by the rotation of the drive roller. However, either the first roller 71 or the second roller 72 may be a drive roller or a driven roller. Note that holding the medium 2 between the first roller 71 and the second roller 72 is also expressed as nipping. In the printing device 1, the nip of the medium 2 between the first roller 71 and the second roller 72 can be released by moving the first roller 71 away from the second roller 72.

[0016] In the printing device 1, the nip can be released by raising the first roller 71 relative to the second roller 72. The nip can be changed from the released state to the nipped state by lowering the first roller 71. The presence or absence of the medium 2 does not affect the nipped state and the nipped released state. In other words, the state in which the first roller 71 is raised relative to the second roller 72 is the nipped released state, regardless of whether the medium 2 is present. Similarly, the state in which the first roller 71 is lowered from the released nip state is the nipped state, regardless of whether the medium 2 is present. For example, when a new roll 15 is set on the supply spindle 5, the nip is released so that the leading edge of the medium 2 unwound from the roll 15 can pass between the first roller 71 and the second roller 72.

[0017] The platen 8 is located in the -Z direction of the printing unit 3. The platen 8 faces the printing unit 3 across the transport path. The platen 8 supports the portion of the medium 2 that is printed on by the printing unit 3. The support surface 8A of the platen 8, which faces the +Z direction, is the surface that supports the medium 2. The support surface 8A is approximately horizontal. The platen 8 can apply a suction force to the medium 2. The surface of the platen 8 that faces the printing unit 3 is flat. The support surface 8A of the platen 8 extends over a range where printing by the printing unit 3 is possible. A suction fan may be used to suck air through multiple suction holes formed in the support surface 8A of the platen 8, and the medium 2 may be sucked onto the support surface 8A of the platen 8.

[0018] The printing unit 3 includes a head 25, a carriage 26, and a guide shaft 27. The head 25 has a plurality of nozzles 28 formed therein that eject ink. The plurality of nozzles 28 are open on a nozzle surface 25A of the head 25. The guide shaft 27 is a rod-shaped member that extends along the X-axis. The guide shaft 27 is supported at both ends in the ±X directions by a frame or the like (not shown). The guide shaft 27 guides the movement of the carriage 26.

[0019] The carriage 26 holds the head 25, and is driven by a drive mechanism (not shown) to move the head 25 back and forth in the ±X directions along a guide shaft 27. The head 25 prints on the medium 2 by ejecting ink toward the medium 2 while moving. In the printing device 1, printing is performed by ejecting ink from the head 25 toward an area of ​​the medium 2 that overlaps with the platen 8.

[0020] The medium 2 supported by the platen 8 is transported to the downstream support unit 10 by the downstream transport unit 9. The medium 2 is transported in the +Y direction while being supported on the support surface 8A of the platen 8. The downstream transport unit 9 is located downstream of the platen 8 in the transport direction. The downstream transport unit 9 is also located upstream of the downstream support unit 10 in the transport direction.

[0021] The downstream transport unit 9 has a third roller 91 and a fourth roller 92. The third roller 91 and the fourth roller 92 each extend along the X-axis. The downstream transport unit 9 has a motor (not shown). Power from the motor is transmitted to the fourth roller 92. The fourth roller 92 can be rotated by the power from the motor. The medium 2 is sandwiched between the third roller 91 and the fourth roller 92. The downstream transport unit 9 can transport the medium 2 by rotating the fourth roller 92 with the medium 2 sandwiched between the third roller 91 and the fourth roller 92. The downstream transport unit 9 transports the medium 2 toward the downstream support unit 10.

[0022] The downstream support section 10 is located downstream in the transport direction from the platen 8. The downstream support section 10 supports a portion of the medium 2 that is downstream in the transport direction from a portion that faces the printing section 3.

[0023] The winding shaft 12 is located downstream of the printing unit 3 in the transport direction. The winding shaft 12 winds up the transported medium 2. The winding shaft 12 is located downstream of the downstream support unit 10 in the transport direction. After the medium 2 is transported along the downstream support unit 10, it is wound up by the winding shaft 12.

[0024] The printing device 1 includes an upstream heating section 40, a printing heating section 41, and a downstream heating section 42. The upstream heating section 40 is provided on the upstream support section 6. The upstream heating section 40 heats the medium 2 supported on the first support surface 61A via the upstream support section 6. The printing heating section 41 is provided on the platen 8. The printing heating section 41 heats the medium 2 supported on the support surface 8A via the platen 8. The downstream heating section 42 is provided on the downstream support section 10. The downstream heating section 42 heats the medium 2 supported on the downstream support surface 10A via the downstream support section 10.

[0025] Next, the configuration of the printing device 1 will be described with reference to FIGS.

[0026] As shown in Figures 2 and 3, the printing device 1 includes a housing 100. Leg frames 110 are attached to the housing 100 near both ends in the X direction. Casters 111 and adjusters 112 are provided below the leg frames 110. Using the casters 111, the printing device 1 can be easily moved. Using the adjusters 112, the height can be adjusted at multiple points, allowing the printing device 1 to be appropriately installed on the installation surface.

[0027] As described above, the housing 100 includes the printing unit 3, the upstream transport unit 7, the platen 8, the downstream transport unit 9, and the control unit 13. As described above, the printing device 1 also includes the payout spindle 5, the upstream support unit 6, the downstream support unit 10, and the take-up spindle 12 (see FIG. 1).

[0028] The printing device 1 is equipped with a head 25 (see FIG. 1) that ejects ink. The head 25 is housed in a housing 100. The printing device 1 is equipped with a liquid supply unit 120 that supplies ink to the head 25. The liquid supply unit 120 and the head 25 are configured so that ink can be supplied via a liquid supply path (not shown).

[0029] The printing device 1 performs printing by ejecting ink onto the transported medium 2 while moving the head 25 back and forth in the X direction. A blower 130 that blows air onto the medium 2 is provided in a portion of the printing device 1 facing the downstream support unit 10. By blowing air onto the medium 2, the ink ejected onto the medium 2 can be dried.

[0030] On the front side A of the housing 100, there is provided an opening / closing cover 200 having a first partition 210 that forms part of the top surface 100a of the housing 100 and a second partition 220 that forms part of the front side A of the housing 100. The front side A is the state when the printing device 1 is viewed from the +Y direction to the -Y direction. The back side B is the state when the printing device 1 is viewed from the -Y direction to the +Y direction. The opening / closing cover 200 opens and closes part of the housing 100 (see FIG. 2) around a pivot 250 (see FIG. 11).

[0031] Next, the configuration around the opening / closing cover 200 will be described with reference to FIGS. 4 to 10. FIG. 4 shows the configuration of the housing 100 when the opening / closing cover 200 is closed. FIG. 5 shows the configuration of the opening / closing cover 200 and the inner duct 232 when the opening / closing cover 200 is open. FIG. 6 shows the configuration of the inner duct 232 including the vertical duct 233. FIG. 7 shows the configuration in which the front side of the opening / closing cover 200 is visible. FIG. 8 shows the configuration in which the inner duct 232 side of the opening / closing cover 200, i.e., the rear side, is visible. FIG. 9 shows the configuration of the opening / closing cover 200 when the first partition wall 210 is removed. FIG. 10 shows the cross-sectional configuration of the inner duct 232 and the vertical duct 233.

[0032] 4, opening / closing cover 200 has, as described above, first partition 210 that constitutes part of top surface 100a of housing 100, and second partition 220 that constitutes part of front side A (see FIG. 3) of housing 100. When opening / closing cover 200 is closed, the transport path is located in the -Z direction of second partition 220, and a gap necessary for ejecting medium 2 from housing 100 is provided. Second partition 220 may be formed of a transparent material.

[0033] An outer duct 231 is fixed to the outside of the second partition wall 220, i.e., on the +Y direction side (see FIG. 9). As shown in FIG. 5, an inner duct 232 communicating with the outer duct 231 is fixed to the housing 100. Connection portions 230 that connect the outer duct 231 and the inner duct 232 are provided at both ends of the second partition wall 220 in the X direction (see FIG. 4).

[0034] As shown in FIG. 9, the second partition 220 of the open-close cover 200 is provided with a suction section 241 that sucks in gas 300 inside the housing 100. The suction section 241 is provided inside the second partition 220, i.e., on the -Y direction side. The second partition 220 is sandwiched between the suction section 241 and the outer duct 231. The gas 300 includes droplets that remain inside the housing 100 when ink is ejected from the nozzles 28 onto the medium 2. The suction section 241 and the outer duct 231 are in communication with each other via a filter 242.

[0035] Specifically, gas 300 sucked through suction unit 241 passes through filter 242, which adsorbs droplets contained in gas 300. Gas 300 that has passed through filter 242 passes through outer duct 231 and enters inner duct 232 via connection unit 230. Gas 300 that has entered inner duct 232 passes through inner duct 232, specifically, vertical duct 233 (see FIG. 6), and is discharged to the outside of housing 100 via airflow generating unit 234, such as an exhaust fan.

[0036] As shown in Fig. 5, the inner duct 232 has an inner connection opening 230A that opens toward the front side A and is connected to the outer duct 231. Specifically, the inner connection opening 230A is inclined so as to face the front side A and upward, i.e., in the +Z direction. In other words, the inner connection opening 230A is inclined obliquely upward. As shown in Fig. 8, the outer duct 231 has an outer connection opening 230B that is configured to be able to move toward and away from the inner connection opening 230A as the opening and closing cover 200 is opened and closed.

[0037] 6, the inner duct 232 has a vertical duct 233. The vertical duct 233 is in communication with the airflow generation unit 234. In other words, the vertical duct 233 is disposed closer to the airflow generation unit 234 than the inner connection opening 230A. In other words, the vertical duct 233 is disposed midway in the flow path connecting the inner connection opening 230A and the airflow generation unit 234.

[0038] The vertical duct 233 is made of, for example, a hollow angular member. The vertical duct 233 also functions as a frame that constitutes the housing 100.

[0039] In this way, since vertical duct 233 is provided, gas 300 that has passed through opening / closing cover 200 from suction section 241 can be discharged to the lower outside of housing 100 via vertical duct 233. Therefore, gas 300 containing droplets that remains inside housing 100 can be removed.

[0040] Moreover, since the vertical duct 233 is made of a hollow angular member, it can be used as a frame for the housing 100 and can discharge the gas 300 below the housing 100. Furthermore, since the vertical duct 233 functions as a frame, it is possible to reduce the amount of material used and the associated costs.

[0041] 5 and 6, the vertical duct 233 made of a rectangular member has an upper opening 233a that opens across multiple surfaces, and a lower opening 233b that is formed below the upper opening 233a and also opens across multiple surfaces. Specifically, the upper opening 233a opens across, for example, two side surfaces of the rectangular member extending along the Z direction. The lower opening 233b opens across, for example, two side surfaces of the rectangular member extending along the Z direction. By providing openings across multiple surfaces, the opening area can be made larger than when an opening is provided on a single surface.

[0042] The upper opening 233a receives the gas 300 flowing from the inner connection opening 230A. The lower opening 233b discharges the gas 300 toward the airflow generating section 234. The lower opening 233b is formed above the lower end 233b1 of the horn-shaped member.

[0043] In this manner, the use of a square-shaped member having the upper opening 233a and the lower opening 233b allows the gas 300 inside the housing 100 to be discharged toward the airflow generating unit 234 while changing its flow direction. The lower opening 233b is formed above the lower end 233b1. In other words, the vertical duct 233 extends below the lower opening 233b. Therefore, a light object such as the gas 300 changes direction and flows out from the lower opening 233b provided midway through the vertical duct 233 toward the airflow generating unit 234, whereas a heavy solid object falls within the vertical duct 233 below the lower opening 233b due to gravity. In this embodiment, the inner connection opening 230A is inclined obliquely upward, and therefore, foreign matter may enter through the inner connection opening 230A. However, as the foreign matter passes through the vertical duct 233, it falls below the lower opening 233b and does not flow toward the airflow generating unit 234. That is, foreign matter can be captured below lower opening 233b in vertical duct 233. This reduces the chance of invading foreign matter coming into contact with airflow generating section 234, reducing the occurrence of breakdowns.

[0044] Next, the opening and closing operation of opening and closing cover 200 will be described with reference to FIG.

[0045] 11, as described above, opening / closing cover 200 is provided at the top of the front side A of housing 100. Opening / closing cover 200 has a first partition wall 210 and a second partition wall 220. The portion where opening / closing cover 200 and housing 100 join together, i.e., inner connection opening 230A of inner duct 232, is inclined so as to face the front side A and the upper side. In other words, inner connection opening 230A has an inclined surface that faces diagonally upward.

[0046] When opening / closing cover 200 is closed (see FIGS. 2 and 11), outer connection opening 230B of outer duct 231 and inner connection opening 230A of inner duct 232 are aligned and closed. Opening / closing cover 200 rotates about rotation shaft 250 to open and close a portion of housing 100.

[0047] In the connection portion 230 provided in the housing 100, the first end 230A1 of the inner connection opening 230A, which is closer to the top surface 100a, is closer to the rotation axis 250 than the second end 230A2, which is farther from the top surface 100a. Specifically, the distance L1 between the rotation axis 250 and the first end 230A1 is shorter than the distance L2 between the rotation axis 250 and the second end 230A2.

[0048] In connection portion 230 of opening / closing cover 200, first end portion 230B1 of outer connection opening portion 230B, which is closer to top surface 100a, is closer to pivot shaft 250 than second end portion 230B2, which is farther from top surface 100a. Specifically, distance L3 between pivot shaft 250 and first end portion 230B1 is shorter than distance L4 between pivot shaft 250 and second end portion 230B2.

[0049] In this way, inner connection opening 230A is inclined so as to face front side A and upward; in other words, second end portions 230A2, 230B2 are farther from pivot shaft 250 than opening / closing cover 200. Therefore, when opening / closing cover 200 is opened or closed, the upper end portion of opening / closing cover 200, i.e., first end portion 230B1, pivots around pivot shaft 250 in a small circle (see arrow). On the other hand, the lower end portion of opening / closing cover 200, i.e., second end portion 230B2, pivots around pivot shaft 250 in a large circle (see arrow). First end portion 230B1 has a smaller radius of rotation around pivot shaft 250 than second end portion 230B2.

[0050] Therefore, when the outer duct 231 and the inner duct 232 move toward or away from each other, the rotation radius of the second end 230B2 of the outer connection opening 230B is larger than that of the first end 230B1 of the outer connection opening 230B, and therefore the paths of rotation of the first end 230B1 and the second end 230B2 are different. This makes it possible to prevent the outer duct 231 and the inner duct 232 from rubbing against each other, thereby preventing wear on the outer duct 231 and the inner duct 232. When the outer duct 231 and the inner duct 232 move away from each other, the open-close cover 200 is rotated from the end with the larger rotation radius toward the end with the smaller rotation radius.

[0051] As described above, the printing device 1 of this embodiment is housed in the housing 100 and has the head 25 that ejects liquid onto the medium 2, the first partition 210 that forms part of the top surface 100a of the housing 100, the second partition 220 that forms part of the front surface of the housing 100, the openable cover 200 that opens and closes the housing 100 about the pivot shaft 250, the suction unit 241 that sucks in the gas 300 inside the housing 100, the outer duct 231 that is fixed to the second partition 220 and communicates with the suction unit 241, and the opening / closing cover 200 that opens and closes the housing 100 about the pivot shaft 250. and an inner duct 232 that can communicate with the outer duct 231, the inner duct 232 having an inner connection opening 230A that opens toward the front and is connected to the outer duct 231, the outer duct 231 having an outer connection opening 230B that is configured to be able to move toward and away from the inner connection opening 230A as the opening / closing cover 200 is opened and closed, and the inner connection opening 230A has a first end 230A1 that is closer to the top surface 100a closer to the pivot axis 250 than a second end 230A2 that is further away from the top surface 100a.

[0052] With this configuration, first end 230A1 is closer to pivot shaft 250 than second end 230A2; in other words, second end 230A2 is farther from pivot shaft 250. Therefore, when opening and closing openable cover 200, second end 230B2 of outer connection opening 230B of openable cover 200 pivots in a large circle. Therefore, when outer duct 231 and inner duct 232 move toward or away from each other, it is possible to prevent friction between outer duct 231 and inner duct 232, thereby preventing wear of outer duct 231 and inner duct 232. This maintains the sealing performance between outer duct 231 and inner duct 232, thereby improving the exhaust performance of gas 300.

[0053] Furthermore, in the printing device 1 of this embodiment, it is preferable that the inner connection opening 230A is inclined so as to face forward and upward. With this configuration, because the inner connection opening 230A is inclined so as to face forward and upward, when the opening-closing cover 200 is opened or closed, the lower end of the opening-closing cover 200, i.e., the second end 230B2, rotates in a large circle. Therefore, when the outer duct 231 and the inner duct 232 move toward or away from each other, friction between the outer duct 231 and the inner duct 232 can be reduced.

[0054] Furthermore, the printing device 1 of this embodiment includes an airflow generating unit 234 that communicates with the inner duct 232 and generates an airflow, and the inner duct 232 preferably has a vertical duct 233 on the airflow generating unit 234 side of the inner connection opening 230A. With this configuration, since the vertical duct 233 is provided, the gas 300 that has passed from the suction unit 241 through the outer duct 231 of the opening / closing cover 200 can be discharged to the lower outside of the housing 100 via the inner duct 232 and the vertical duct 233. Therefore, the gas 300 containing droplets that has accumulated around the head 25 can be removed.

[0055] Furthermore, in the printing device 1 of this embodiment, the vertical duct 233 is preferably a frame that constitutes the housing 100. With this configuration, the vertical duct 233 is provided on the frame, which makes it possible to reduce the amount of material used and the associated costs.

[0056] In addition, in the printing device 1 of this embodiment, it is preferable that the vertical duct 233 is made of a hollow angular member. With this configuration, since the vertical duct 233 is made of a hollow angular member, it can be used as a frame for the housing 100 and can also exhaust the gas 300 below the housing 100.

[0057] Furthermore, in the printing device 1 of this embodiment, the angular member has an upper opening 233a that opens across multiple surfaces and a lower opening 233b that is formed below the upper opening 233a and also opens across multiple surfaces, and it is preferable that the upper opening 233a allows the gas 300 flowing from the inner connection opening 230A to flow in, and the lower opening 233b allows the gas 300 to flow out toward the airflow generating unit 234. According to this configuration, since an angular member having the upper opening 233a and the lower opening 233b is used, the gas 300 sucked in from the suction unit 241 can be discharged in the direction of the airflow generating unit 234.

[0058] Furthermore, in the printing device 1 of this embodiment, the lower opening 233b is preferably formed above the lower end 233b1 of the angular member. With this configuration, the lower opening 233b is formed above the lower end 233b1. In other words, the vertical duct 233 extends below the lower opening 233b. Therefore, foreign matter can be captured in the vertical duct 233 below the lower opening 233b. [Explanation of symbols]

[0059] 1...printing device, 2...medium, 3...printing unit, 5...feeding spindle, 6...upstream support unit, 7...upstream transport unit, 8...platen, 8A...support surface, 9...downstream transport unit, 10...downstream support unit, 10A...downstream support surface, 12...winding spindle, 13...control unit, 15...roll, 25...head, 25A...nozzle surface, 26...carriage, 27...guide shaft, 28...nozzle, 40...upstream heating unit, 41...print heating unit, 42...downstream heating unit, 61...upstream heating support unit, 61A...first support surface, 62...upstream guide support unit, 71...first roller, 72...second roller, 91...third roller, 92...fourth roller, 100...casing, 100a...top surface, 110 ...Leg frame, 111...caster, 112...adjuster, 120...liquid supply section, 130...air blowing section, 200...opening / closing cover, 210...first partition wall, 220...second partition wall, 230...connection section, 230A...inner connection opening, 230A1...first end, 230A2...second end as lower end, 230B...outer connection opening, 230B1...first end, 230B2...second end, 231...outer duct, 232...inner duct, 233...vertical duct, 233a...upper opening, 233b...lower opening, 233b1...lower end, 234...airflow generating section, 241...suction section, 242...filter, 250...rotating shaft, 300...gas.

Claims

1. a head housed in a housing and configured to eject liquid onto a medium; an opening / closing cover that has a first partition wall that forms a part of the top surface of the housing and a second partition wall that forms a part of the front surface of the housing, and that opens and closes the housing around a rotation axis; a suction unit that sucks gas inside the housing; an outer duct fixed to the second partition wall and communicating with the suction portion; an inner duct fixed to the housing and capable of communicating with the outer duct; Equipped with the inner duct has an inner connection opening that opens toward the front surface and is connected to the outer duct; the outer duct has an outer connection opening configured to be movable toward and away from the inner connection opening as the openable cover is opened and closed, A printing device, wherein a first end of the inner connection opening that is closer to the top surface is closer to the pivot axis than a second end that is farther from the top surface.

2. 2. The printing device according to claim 1, The inner connection opening is inclined to face the front and upward.

3. 2. The printing device according to claim 1, a printing device comprising an airflow generating section that communicates with the inner duct and generates an airflow, the inner duct having a vertical duct on the airflow generating section side of the inner connection opening.

4. 4. The printing device according to claim 3, The vertical duct is a frame that constitutes the housing of the printing device.

5. 4. The printing device according to claim 3, A printing device, wherein the vertical duct is made of a hollow angular member.

6. 6. The printing device according to claim 5, The angular member has an upper opening that opens across multiple surfaces, and a lower opening that is formed below the upper opening and also opens across multiple surfaces, the upper opening receives the gas flowing from the inner connection opening, The lower opening allows the gas to flow out toward the airflow generating unit.

7. 7. The printing device according to claim 6, A printing device, wherein the lower opening is formed above a lower end of the angular member.

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