Conveying device, liquid ejecting device

Abstract

To provide a conveyance device and a liquid discharge device, which can improve workability when setting media.SOLUTION: A conveyance device includes: a roller unit 28 which includes a first roller 41 to a third roller 43, over which media 17 supplied from a holding section 12 for holding the media 17 are laid; a conveyance section 27 which can convey the media 17 passing the roller unit 28; and a support section 29 which supports the roller unit 28 to be movable with respect to the conveyance section 27.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a transport device and a liquid ejection device. [Background technology]

[0002] For example, Patent Document 1 discloses a recording device that is an example of a liquid ejection device that ejects liquid from a recording head, which is an example of an ejection section, to perform recording. The recording device has a holding section, a wrinkle suppression device, which is an example of a roller unit, and a transport unit, which is an example of a transport section. The holding section holds a roll on which a long length of media is wound. The wrinkle suppression device has multiple rollers. The wrinkle suppression device applies tension to the media wound around the multiple rollers to prevent wrinkles from increasing in the media. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-104633 Summary of the Invention [Problem to be solved by the invention]

[0004] When loading media into the recording device of Patent Document 1, the operator wraps the media around multiple rollers and holds the media in the transport section. However, no consideration is given to the ease of loading the media. [Means for solving the problem]

[0005] A conveying device that solves the above problem comprises a roller unit including a plurality of rollers across which media supplied from a holding section that holds the media is stretched, a conveying section that can convey the media passing through the roller unit, and a support section that supports the roller unit so that it can move relative to the conveying section.

[0006] A liquid ejection device that solves the above problem includes an ejection section capable of ejecting liquid onto media, a roller unit including a plurality of rollers across which the media supplied from a holding section that holds the media is stretched, a transport section capable of transporting the media that passes through the roller unit, and a support section that supports the roller unit so that it can move relative to the transport section. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a schematic diagram of an embodiment of a liquid ejection device. [Figure 2] FIG. [Figure 3] FIG. 10 is a schematic diagram of a first modified example of the transport device. [Figure 4] FIG. 10 is a schematic diagram of a second modified example of the transport device. [Figure 5] FIG. 10 is a schematic diagram of a third modified example of the transport device. [Figure 6] FIG. 10 is a schematic diagram of a fourth modified example of the transport device. [Figure 7] FIG. 10 is a schematic diagram of a fifth modified example of the transport device. [Figure 8] FIG. 10 is a schematic diagram of a fifth modified example of the transport device. [Figure 9] FIG. 10 is a schematic diagram of a sixth modified example of the transport device. [Figure 10] FIG. 10 is a schematic diagram of a seventh modified example of the transport device. [Figure 11] FIG. 13 is a schematic diagram of an eighth modified example of the transport device. DETAILED DESCRIPTION OF THE INVENTION

[0008] [Embodiment] The following describes an embodiment of a conveying device and a liquid ejection device with reference to the drawings. The liquid ejection device is, for example, an inkjet printer that records images such as characters and photographs by ejecting ink, which is an example of a liquid, onto a medium such as paper or fabric.

[0009] In the drawings, the liquid ejection device 11 is placed on a horizontal plane, with the direction of gravity indicated by the Z axis, and directions along the horizontal plane indicated by the X and Y axes. The X, Y, and Z axes are perpendicular to one another. In the following description, the direction parallel to the X axis is also referred to as the width direction X, the direction parallel to the Y axis is also referred to as the movement direction Y, and the direction parallel to the Z axis is also referred to as the vertical direction Z.

[0010] <Liquid discharge device> As shown in FIG. 1, the liquid ejection device 11 may include a holding unit 12, a winding unit 13, a recording unit 14, and a conveying device 15.

[0011] The holding unit 12 holds the medium 17. The holding unit 12 can hold a first roll body 18 in which the long medium 17 is wound in a roll shape. The first roll body 18 is the medium 17 before recording.

[0012] The holding unit 12 may include a feed motor 19. The feed motor 19 rotates a shaft (not shown) to rotate the first roll body 18. The holding unit 12 rotates the first roll body 18 in synchronization with the transport device 15 transporting the medium 17, thereby supplying the medium 17 unwound from the first roll body 18 to the transport device 15. In this embodiment, the direction in which the medium 17 is transported is also referred to as the transport direction D.

[0013] The conveying direction D is the direction from the holding unit 12 toward the winding unit 13 and is the direction along the conveying path of the medium 17. The holding unit 12 is located at the upstream end of the conveying direction D. The conveying device 15 sends the medium 17 pulled out from the holding unit 12 to the winding unit 13, which is at the downstream end of the conveying direction D.

[0014] The winding unit 13 winds up the medium 17 to form a second roll body 20. The winding unit 13 is capable of holding the second roll body 20. The winding unit 13 may include a winding motor 21. The winding motor 21 winds up the recorded medium 17 by rotating a shaft (not shown).

[0015] The recording unit 14 includes a discharge unit 23 and a carriage 24 . The ejection unit 23 has a nozzle 25. The ejection unit 23 is capable of ejecting liquid onto the medium 17. The ejection unit 23 ejects the liquid from the nozzle 25 to record on the medium 17.

[0016] The carriage 24 holds the discharge unit 23. In this embodiment, the carriage 24 moves the discharge unit 23 back and forth along the X axis. The discharge unit 23 in this embodiment is a serial type that discharges liquid while moving. The discharge unit 23 may also be a line type that is provided across the width direction X of the medium 17.

[0017] <Conveyor equipment> The transport device 15 includes a transport section 27, a roller unit 28, and a support section 29. The transport device 15 may include a speed limiting mechanism 30.

[0018] The transport unit 27 is provided downstream of the roller unit 28 in the transport direction D. The transport unit 27 is capable of transporting the medium 17 that passes through the roller unit 28. The transport unit 27 transports the medium 17 in the transport direction D.

[0019] The conveying section 27 may include a driving roller 32, a driven roller 33, a driving section , a conveying belt 35, and a pressing section . The drive unit 34 transmits a driving force to the drive roller 32 to drive the conveyor belt 35. The drive unit 34 is, for example, a motor. The drive unit 34 rotates the drive roller 32. When the drive roller 32 rotates, the conveyor belt 35 revolves around the drive roller 32 and the driven roller 33. The driven roller 33 rotates in accordance with the rotation of the conveyor belt 35.

[0020] The conveyor belt 35 has a base material 38 and an adhesive layer 39 having adhesiveness. The conveyor belt 35 is circular. The inner peripheral surface of the conveyor belt 35 is formed by the base material 38. The inner peripheral surface is in contact with the drive roller 32 and the driven roller 33. The outer peripheral surface of the conveyor belt 35 is formed by the adhesive layer 39. The adhesive layer 39 may be formed by an adhesive applied to the base material 38.

[0021] The conveyor belt 35 can adhere the medium 17 to its outer circumferential surface. The conveyor belt 35 rotates with the medium 17 adhered to it, thereby conveying the medium 17 in the conveyance direction D. The conveyed medium 17 is peeled off from the conveyor belt 35 by the winding unit 13.

[0022] The pressing unit 36 ​​is provided outside the conveyor belt 35. The pressing unit 36 ​​presses the media 17 against the conveyor belt 35. That is, the pressing unit 36 ​​attaches the media 17 to the conveyor belt 35. The pressing unit 36 ​​sequentially attaches the supplied media 17 as the conveyor belt 35 rotates. The pressing unit 36 ​​may be, for example, a rod, a roller, or an air blower that presses the media 17 with air pressure.

[0023] The roller unit 28 is located between the holding unit 12 and the conveying unit 27 in the conveying direction D. The roller unit 28 applies tension to the medium 17, thereby reducing wrinkles on the medium 17.

[0024] 2, roller unit 28 includes a first roller 41, a second roller 42, and a third roller 43. Roller unit 28 may include a support wall 44, a retaining portion 45, and a mooring portion 46. Roller unit 28 may include a spring (not shown) that pushes second roller 42 away from first roller 41 and third roller 43.

[0025] In this embodiment, the first roller 41 to the third roller 43 are simply referred to as rollers without distinction. The number of rollers included in roller unit 28 may be two, or may be four or more. In other words, roller unit 28 includes a plurality of rollers.

[0026] The support walls 44 rotatably support each of the first roller 41 to the third roller 43. The roller unit 28 may have a plurality of support walls 44. The roller unit 28 of this embodiment has a pair of support walls 44 spaced apart from each other in the width direction X. The pair of support walls 44 may support both ends of each roller. The pair of support walls 44 may support each roller such that the axial direction of each roller is parallel to the X axis.

[0027] The medium 17 supplied from the holder 12 is passed over the first roller 41, the second roller 42, and the third roller 43 in that order. That is, the first roller 41 to the third roller 43 are arranged side by side in the transport direction D. The portions of the first roller 41 to the third roller 43 that come into contact with the medium 17 form a transport path for the medium 17. The first roller 41 to the third roller 43 may be rotated in response to the transport of the medium 17.

[0028] The first roller 41 is located upstream of the second roller 42 in the conveying direction D. The second roller 42 is located between the first roller 41 and the third roller 43 in the conveying direction D. The third roller 43 is located downstream of the second roller 42 in the conveying direction D. The first roller 41 and the third roller 43 may be located below the second roller 42 in the vertical direction Z.

[0029] In this embodiment, the imaginary line connecting the centers of rotation of the first roller 41 and the second roller 42 is referred to as the first imaginary line V1. In this embodiment, the imaginary line connecting the centers of rotation of the second roller 42 and the third roller 43 is referred to as the second imaginary line V2. The first imaginary line V1 and the second imaginary line V2 are perpendicular to the X-axis. The first roller 41 to the third roller 43 may be arranged so that the angle between the first imaginary line V1 and the second imaginary line V2 is an acute angle. By wrapping the medium 17 around the second roller 42 between the first roller 41 and the third roller 43, the medium 17 can be brought into contact with the second roller 42 for more than half of its circumference.

[0030] The circumferential surface of the second roller 42 may have a greater coefficient of friction than the circumferential surfaces of the first roller 41 and the third roller 43. By making the coefficient of friction of the second roller 42 relatively larger, the medium 17 wound around the second roller 42 can be made less likely to slip in the width direction X.

[0031] The retaining portion 45 can retain the media 17 wound around the third roller 43, which is the most downstream of the multiple rollers in the conveying direction D. The retaining portion 45 is detachably attached to the third roller 43. The roller unit 28 may be equipped with one or more retaining portions 45. The multiple retaining portions 45 may be attached to the third roller 43 at intervals in the width direction X. The operator may change the number of retaining portions 45 used depending on the size of the media 17 in the width direction X.

[0032] The retaining portion 45 restricts movement of the medium 17 relative to the third roller 43 by clamping the medium 17 between the retaining portion 45 and the third roller 43. The retaining portion 45 is, for example, an elastic clip that can clamp the third roller 43 over the medium 17.

[0033] The mooring portion 46 may connect the anchoring portion 45 to, for example, the support wall 44. By providing the mooring portion 46, the worker can easily store the anchoring portion 45. The mooring portion 46 may be elastic. The mooring portion 46 may be detachable from at least one of the anchoring portion 45 and the support wall 44.

[0034] The support section 29 movably supports the roller unit 28. The roller unit 28 is movable relative to the transport section 27. The support section 29 is, for example, a linear guide. The support section 29 may support the roller unit 28 so that it can slide along the Y axis. The support section 29 is fixed, for example, to a frame (not shown) of the transport section 27 that supports the drive roller 32 and the driven roller 33.

[0035] Roller unit 28 is movable along support portion 29 between a recording position indicated by a solid line in FIG. 2 and a set position indicated by a two-dot chain line in FIG. 2. Roller unit 28 located at the set position moves to the recording position by moving in movement direction Y. Roller unit 28 moves from the recording position to the set position, thereby moving away from conveyance portion 27. Specifically, when roller unit 28 is located at the set position, a first distance L1 between third roller 43 and conveyance portion 27 is longer than a second distance L2 between third roller 43 and conveyance portion 27 when roller unit 28 is located at the recording position. First distance L1 and second distance L2 are the shortest distances between third roller 43 and conveyance portion 27.

[0036] The speed limiting mechanism 30 limits the movement speed of the roller unit 28 that moves relative to the transport section 27. The speed limiting mechanism 30 may limit the movement speed by using magnetic force. The speed limiting mechanism 30 may limit the movement speed over the entire range in which the roller unit 28 can move. The speed limiting mechanism 30 may limit the movement speed over a portion of the range in which the roller unit 28 moves. The speed limiting mechanism 30 may reduce the movement speed just before the moving roller unit 28 reaches the recording position or the set position.

[0037] <Operation of the embodiment> The operation of this embodiment will be described. 2, when setting the medium 17 in the liquid ejection device 11, the worker positions the roller unit 28 at the setting position. The worker pulls out the medium 17 from the first roll body 18 and winds it around the second roller 42 so that the medium 17 passes between the first roller 41 and the third roller 43.

[0038] With the media 17 wound around the first roller 41, the second roller 42, and the third roller 43, the worker attaches the retaining part 45 to the third roller 43. That is, the media 17 is sandwiched between the retaining part 45 and the third roller 43. The worker moves the roller unit 28 from the set position to the recording position with the retaining part 45 still attached. At the recording position, the worker removes the retaining part 45, pulls out the media 17, and sets it in the conveying part 27 and the winding part 13.

[0039] <Effects of the embodiment> The effects of this embodiment will be described. (1) Roller unit 28 is movable relative to conveyance section 27. Therefore, the distance between roller unit 28 and conveyance section 27 can be changed. Therefore, for example, when setting media 17, by setting media 17 with roller unit 28 separated from conveyance section 27, the ease of setting media 17 can be improved.

[0040] (2) When the roller unit 28 moves with the media 17 wrapped around multiple rollers, there is a risk that the media 17 will be pulled out of the roller unit 28. This pulling out of the media 17 occurs due to the tension acting on the media 17 between the holding section 12 and the roller unit 28. If the media 17 is pulled out, it is necessary to move the roller unit 28 and then re-wrap the media 17 around the multiple rollers. This reduces the ease of setting the media 17 on the roller unit 28. In this regard, the retaining section 45 can retain the media 17 wrapped around the third roller 43, which is located furthest downstream in the transport direction D. This reduces the risk that the media 17 will be pulled out of the roller unit 28 when the roller unit 28 moves.

[0041] (3) The speed limiting mechanism 30 limits the movement speed of the roller unit 28. Therefore, it is possible to reduce the risk of the roller unit 28 moving at a speed that is not intended by the worker. [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.

[0042] <First change example> As shown in FIG. 3 , the roller unit 28 may have multiple wheels 48. The support portion 29 may be a rail that guides the multiple wheels 48. A pair of rails may be provided with a gap between them in the width direction X. The rail may have a rectangular cross section or a polygonal shape such as a hexagon. The rail may have a flat upper surface and flat side surfaces to support the wheels 48 in the vertical direction Z and the width direction X. The rail may have a semicircular cross section or a circular cross section. The rail may support the wheels 48 with a curved surface. The speed limiting mechanism 30 may be provided on at least one wheel 48. Note that the roller unit 28 may have a rail, while the support portion 29 may have multiple wheels 48. That is, the roller unit 28 may have a rail, while the frame of the conveying portion 27 may be provided with multiple wheels 48.

[0043] <Second modification example> As shown in Fig. 4, support section 29 may rotatably support roller unit 28. That is, roller unit 28 may move relative to conveyance section 27 by rotating. Roller unit 28 may be rotatable, for example, around the axis of first roller 41. In this case, roller unit 28 may rotate such that second roller 42, third roller 43, and support wall 44 move between a recording position indicated by a solid line in Fig. 4 and a set position indicated by a two-dot chain line in Fig. 4.

[0044] <Third modification example> As shown in FIG. 5, an arm 50 may be further provided for moving at least one of the first roller 41 to the third roller 43. The arm 50 may be a linear guide or a rail. The transport device 15 may be provided with a plurality of arms 50. In this modified example, the number of arms 50 is the same as the number of rollers. The first roller 41 to the third roller 43 may each slide between a recording position indicated by a solid line in FIG. 5 and a set position indicated by a two-dot chain line in FIG. 5. The first roller 41 to the third roller 43 may be independently movable.

[0045] <Fourth modified example> As shown in FIG. 6, the arm 50 may be rotatable around a rotation axis 49. The arm 50 may rotationally move at least one of the first roller 41 to the third roller 43. For example, the arm 50 supporting the first roller 41 may rotationally move the first roller 41. For example, the arm 50 supporting the second roller 42 may rotationally move the second roller 42. The arm 50 supporting the third roller 43 may slide the third roller 43. The first roller 41 to the third roller 43 may each move to a recording position indicated by a solid line in FIG. 6 and a set position indicated by a two-dot chain line in FIG. 6.

[0046] <Fifth modification example> As shown in Figures 7 and 8, the arms 50 may support the shafts of the corresponding rollers. The roller unit 28 may include an interlocking mechanism 51 and a switching mechanism 52. The interlocking mechanism 51 displaces multiple rollers in conjunction with one another. This improves convenience for the worker compared to displacing multiple rollers individually. In this modified example, the interlocking mechanism 51 is made up of the same number of arms 50 as the number of rollers.

[0047] The switching mechanism 52 in this modified example is a hole formed in each arm 50. In this modified example, the first roller 41 and the second roller 42 move with reference to the third roller 43. Specifically, when the first roller 41 or the second roller 42 located at the recording position shown in FIG. 7 is moved, the first roller 41 and the second roller 42 move to the set position shown in FIG. 8.

[0048] The switching mechanism 52 switches between a first state that allows displacement of at least one of the multiple rollers and a second state that restricts displacement of the roller. The switching mechanism 52 may have a guide hole 53 and a retaining hole 54. The retaining hole 54 may be provided at both ends of the guide hole 53, or may be provided at one of the ends. The guide hole 53 allows displacement of the roller by guiding the roller shaft. The retaining hole 54 restricts displacement of the roller by restricting movement of the roller shaft. The retaining hole 54 may be recessed below the guide hole 53 in the vertical direction Z.

[0049] As shown in Figures 7 and 8, when the first roller 41 to the third roller 43 are located in the recording position or the set position, the shafts of the rollers are located in the holding holes 54, and the rollers are in the second state. When the first roller 41 to the third roller 43 are located in a position other than the recording position or the set position, the shafts of the rollers are located in the guide holes 53, and the rollers are in the first state. By setting the rollers in the first state, the rollers can be easily displaced. By setting the rollers in the second state, the media 17 can be easily wound around the rollers, whose displacement is limited.

[0050] <Sixth Change Example> 9, the switching mechanism 52 may switch between a first state that allows displacement of the third roller 43 and a second state that restricts displacement of the third roller 43. When the third roller 43 is located at the recording position indicated by the dashed line in FIG. 9 and at the set position indicated by the two-dot chain line in FIG. 9, its shaft is positioned in the holding hole 54, and the third roller 43 is in the second state. When the third roller 43 is located at a position other than the recording position and the set position, the third roller 43 is located at the first state, and its shaft is positioned in the guide hole 53.

[0051] <Seventh Change Example> As shown in FIG. 10, the arm 50 may be configured with a cylinder. The cylinder may be an air cylinder that is operated by air pressure, or a hydraulic cylinder that is operated by hydraulic pressure. The cylinder may function as an interlocking mechanism that displaces the first roller 41 and the second roller 42 in conjunction with each other. The first roller 41 and the second roller 42 may move between a recording position indicated by a dashed line in FIG. 10 and a set position indicated by a two-dot chain line in FIG. 10.

[0052] <Example of change No. 8> 11, the third roller 43 may be provided at a position different from the support wall 44. The arm 50 may movably support the third roller 43. The third roller 43 may move between a recording position indicated by a solid line in FIG. 11 and a set position indicated by a two-dot chain line in FIG. 11. The distance between the third roller 43 located at the set position and the pressing unit 36 ​​provided in the conveying unit 27 is longer than the distance between the third roller 43 located at the recording position and the pressing unit 36.

[0053] <Other change examples> The transport device 15 may include an elastic member such as a spring. For example, the transport device 15 may use a tension spring to pull all or part of the roller unit 28 located in the set position back to the recording position. For example, the transport device 15 may use a compression spring to push all or part of the roller unit 28 located in the set position back to the recording position. The speed limiting mechanism 30 may limit the movement speed during return using the force of the spring. The switching mechanism 52 may be, for example, a pin that holds at least one moved roller in the position after movement. The switching mechanism 52 may be in a second state where the roller displacement is limited by inserting the pin, and in a first state where the roller displacement is allowed by removing the pin.

[0054] The retaining portion 45 may be a clip that clamps the tip of the medium 17, or a hook that catches in a hole formed in the tip of the medium 17. The retaining portion 45 may be a magnet. If the retaining portion 45 is a magnet, part or all of the third roller 43 may be made of a magnetic material.

[0055] The switching mechanism 52 may be combined with modifications and embodiments other than the fifth and sixth modifications to the extent technically possible. The liquid ejection device 11 may include a heating unit that heats the medium 17. The heating unit may heat the medium 17 at a position between the roller unit 28 and the position where recording is performed by the recording unit 14. The support unit 29 may support the roller unit 28 so that it can move relative to the heating unit. The heating unit may be an infrared heater or a hot air heater that heats the medium 17 without contacting it. The heating unit may be a heat roller that heats the medium 17 by contacting it. The pressing unit 36 ​​may be composed of a hot air heater, a heat roller, or the like. The liquid ejection device 11 may heat the pressing unit 36 ​​to function as the heating unit, or may include a heating unit separate from the pressing unit 36.

[0056] The transport device 15 may be provided in a device different from the liquid ejection device 11. For example, the transport device 15 may be provided in a recording device that records by fixing toner on the medium 17.

[0057] The liquid ejection device 11 may be a liquid ejection device that ejects or discharges liquids other than ink. The liquid ejected as minute droplets from the liquid ejection device may be in the form of granules, tears, or strings. The liquid referred to here may be any material that can be ejected from the liquid ejection device. For example, the liquid may be in any liquid phase, including fluids such as high or low viscosity liquids, sols, gel water, other inorganic solvents, organic solvents, solutions, liquid resins, liquid metals, and metal melts. The liquid may refer not only to a single state of matter, but also to solid functional material particles, such as pigments and metal particles, dissolved, dispersed, or mixed in a solvent. Typical examples of liquids include inks and liquid crystals, as described in the above embodiments. Here, ink encompasses various liquid compositions, such as general water-based inks and oil-based inks, as well as gel inks and hot-melt inks. Specific examples of liquid ejection devices include devices that eject liquids containing dispersed or dissolved materials such as electrode materials and color materials used in the manufacture of liquid crystal displays, electroluminescent displays, surface-emitting displays, and color filters. The liquid ejection device may be a device that ejects bioorganic materials used in biochip manufacture, a device used as a precision pipette to eject sample liquids, a textile printing device, a microdispenser, or the like. The liquid ejection device may be a device that ejects lubricating oil with pinpoint accuracy onto precision machinery such as watches and cameras, or a device that ejects transparent resin liquids such as ultraviolet-curing resins onto substrates to form micro-hemispherical lenses, optical lenses, and the like used in optical communication elements. The liquid ejection device may also be a device that ejects etching liquids such as acids or alkalis to etch substrates, etc.

[0058] [Note] The technical concepts and effects that can be understood from the above-described embodiment and modified examples will be described below.

[0059] (A) The conveying device includes a roller unit including a plurality of rollers across which media supplied from a holding section that holds the media is stretched, a conveying section that can convey the media passing through the roller unit, and a support section that supports the roller unit so that it can move relative to the conveying section.

[0060] With this configuration, the roller unit is movable relative to the transport section. Therefore, the distance between the roller unit and the transport section can be changed. Therefore, for example, when setting media, the roller unit can be moved away from the transport section to set the media, improving workability when setting the media.

[0061] (B) In the conveying device, the roller unit may include a retaining section, the plurality of rollers may be arranged in a line in a conveying direction in which the conveying section conveys the media, and the retaining section may be capable of retaining the media wound around a roller that is located furthest downstream in the conveying direction among the plurality of rollers.

[0062] When the roller unit moves with media wrapped around multiple rollers, there is a risk that the media will be pulled out of the roller unit. This media pulling out occurs due to the tension acting on the media between the holding section and the roller unit. If the media does come out, it is necessary to move the roller unit and then re-wrap the media around the multiple rollers. This reduces the ease of setting the media in the roller unit. In this regard, with this configuration, the retaining section can retain the media wrapped around the roller located furthest downstream in the transport direction. This reduces the risk of the media being pulled out of the roller unit when the roller unit moves.

[0063] (C) The transport device may include a speed limiting mechanism that limits the movement speed of the roller unit that moves relative to the transport section. According to this configuration, the speed limiting mechanism limits the movement speed of the roller unit, thereby reducing the risk of the roller unit moving at a speed unintended by the worker.

[0064] (D) In ​​the conveying device, the roller unit may include a linking mechanism that moves the plurality of rollers in a linked manner. According to this configuration, the interlocking mechanism displaces the plurality of rollers in interlocking relation with one another, which improves convenience for the worker compared to when the plurality of rollers are displaced individually.

[0065] (E) In the conveying device, the roller unit may include a switching mechanism that switches between a first state that allows displacement of at least one of the plurality of rollers and a second state that restricts displacement of the roller.

[0066] With this configuration, the switching mechanism switches between a first state that allows the roller to be displaced and a second state that restricts the roller to be displaced. Therefore, by switching to the first state, the roller can be easily displaced. By switching to the second state, the media can be easily wound around the roller whose displacement is restricted.

[0067] (F) The liquid ejection device includes an ejection section capable of ejecting liquid onto a medium, a roller unit including a plurality of rollers across which the medium supplied from a holding section that holds the medium is stretched, a transport section capable of transporting the medium passing through the roller unit, and a support section that supports the roller unit so that it can move relative to the transport section.

[0068] This configuration can achieve the same effects as the above-described conveying device. [Explanation of symbols]

[0069] 11...liquid ejection device, 12...holding section, 13...winding section, 14...recording section, 15...conveying device, 17...media, 18...first roll body, 19...feed motor, 20...second roll body, 21...winding motor, 23...discharge section, 24...carriage, 25...nozzle, 27...conveying section, 28...roller unit, 29...support section, 30...speed limiting mechanism, 32...drive roller, 33...driven roller, 34...drive section, 35...conveying belt, 36...pressing portion, 38...base material, 39...adhesive layer, 41...first roller, 42...second roller, 43...third roller, 44...support wall, 45...retaining portion, 46...mooring portion, 48...wheel, 49...rotating shaft, 50...arm, 51...linking mechanism, 52...switching mechanism, 53...guide hole, 54...holding hole, D...conveying direction, L1...first distance, L2...second distance, V1...first virtual line, V2...second virtual line, X...width direction, Y...moving direction, Z...vertical direction.

Claims

1. a roller unit including a plurality of rollers over which the medium supplied from a holding section that holds the medium is stretched, and a support wall that rotatably supports the plurality of rollers; a transport unit capable of transporting the medium passing through the roller unit; a support section that supports the roller unit so that the roller unit is movable relative to the transport section; Equipped with the roller unit is movable between a recording position and a set position that is farther from the transport unit than the recording position, At the recording position, the support wall of the roller unit and the transport section at least partially overlap with each other in an axial direction of the rollers, The conveying device is characterized in that, in the set position, the support wall of the roller unit and the conveying section do not overlap when viewed in the axial direction of the plurality of rollers.

2. The roller unit includes a retention portion, the plurality of rollers are arranged side by side in a transport direction in which the transport unit transports the medium, The transport device according to claim 1 , wherein the holding section is capable of holding the medium wound around a roller that is located furthest downstream in the transport direction among the plurality of rollers.

3. 3. The conveying device according to claim 1, further comprising a speed limiting mechanism that limits the moving speed of the roller unit that moves relative to the conveying section.

4. 4. The conveying device according to claim 1, wherein the roller unit includes a linking mechanism that links and displaces the plurality of rollers.

5. The conveying device according to claim 4, wherein the roller unit includes a switching mechanism that switches between a first state that allows displacement of at least one of the plurality of rollers and a second state that restricts displacement of the roller.

6. a discharge unit capable of discharging liquid onto a medium; a roller unit including a plurality of rollers over which the medium supplied from a holding section that holds the medium is stretched, and a support wall that rotatably supports the plurality of rollers; a transport unit capable of transporting the medium passing through the roller unit; a support section that supports the roller unit so that the roller unit is movable relative to the transport section; Equipped with the roller unit is movable between a recording position and a set position that is farther from the transport unit than the recording position, At the recording position, the support wall of the roller unit and the transport section at least partially overlap with each other in an axial direction of the rollers, The liquid ejection device according to claim 1, wherein, in the set position, the support wall of the roller unit does not overlap with the transport section when viewed in the axial direction of the plurality of rollers.

Images