Medium drying apparatus and recording apparatus

Abstract

A medium drying device and a recording device that effectively shorten a drying time of a liquid applied to a long strip-shaped medium to be conveyed. The medium drying device dries a liquid applied to a long strip-shaped medium to be conveyed, and includes a surface portion that contacts the medium on a first face, a heat source portion that is provided at a second face side, a winding portion that winds the medium, and a control portion that controls driving of the winding portion. The surface portion is provided with a plurality of curved portions that are curved in a convex shape at the first face when viewed from a width direction. A transport path of the medium from a downstream side end portion of the surface portion to the winding portion is configured to cause the medium to be curved at the downstream side end portion when viewed from the width direction. The control portion controls the driving of the winding portion so that the medium is pressed against the surface portion at the plurality of curved portions and the downstream side end portion while the medium is being transported.

Description

Technical Field

[0001] This invention relates to a media drying apparatus and a recording apparatus. Background Technology

[0002] Various media drying apparatuses have been used throughout history. Among them are apparatuses that dry liquid applied to a conveyed strip of media. In such media drying apparatuses, there is a need to effectively shorten the drying time. For example, Patent Document 1 discloses an inkjet recording apparatus comprising a heater and a fixing transport roller that presses the conveyed strip of recording paper onto the heater.

[0003] In order to shorten the drying time, the inkjet recording apparatus of Patent Document 1 uses a fixing transport roller to press the recording paper onto the heater. However, in this structure, there is a possibility that the ink on the recording paper may be transferred onto the fixing transport roller, and there is also a possibility that the recording paper may be damaged by the fixing transport roller. Therefore, there are many situations where it is not possible to use a technology like the inkjet recording apparatus of Patent Document 1. Thus, in existing media drying apparatuses, it is difficult to effectively shorten the drying time of the liquid supplied to the conveyed strip of media.

[0004] Patent Document 1: Japanese Patent Application Publication No. 05-104706 Summary of the Invention

[0005] The media drying apparatus of the present invention for solving the above-mentioned problems is characterized in that it dries liquid applied to a conveyed elongated medium and comprises: a surface portion that contacts the medium on a first surface; a heat source portion disposed on a second surface side of the surface portion, which is the back side of the first surface; a winding portion disposed on a downstream side compared to the surface portion in the conveying direction of the medium, and for winding the medium; and a control portion that controls the drive of the winding portion. The surface portion is provided with a plurality of curved portions that are convex to the first surface when viewed from a width direction intersecting the conveying direction. The conveying path of the medium from the downstream end of the surface portion in the conveying direction to the winding portion is configured such that the medium is curved at the downstream end when viewed from the width direction. The control portion controls the drive of the winding portion to press the medium onto the surface portion at the plurality of curved portions and the downstream end when the medium is conveyed. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of a recording device according to an embodiment of the present invention.

[0007] Figure 2To indicate Figure 1 A block diagram of the electrical structure of the recording device.

[0008] Figure 3 for Figure 1 A side view of the heating section of the recording device.

[0009] Figure 4 for Figure 1 A flowchart of an embodiment of a driving method for a recording device.

[0010] Figure 5 for Figure 4 Other Figure 1 A flowchart of an embodiment of a driving method for a recording device. Detailed Implementation

[0011] First, the present invention will be described schematically.

[0012] The media drying apparatus of the first aspect of the present invention for solving the above-mentioned problems is characterized in that it dries liquid applied to a conveyed elongated medium, and comprises: a surface portion that contacts the medium on a first surface; a heat source portion disposed on a second surface side of the surface portion, which is the back side of the first surface; a winding portion disposed on a downstream side compared to the surface portion in the conveying direction of the medium, and for winding the medium; and a control portion that controls the drive of the winding portion. The surface portion is provided with a plurality of curved portions that are convex to the first surface when viewed from a width direction intersecting the conveying direction. The conveying path of the medium from the downstream end of the surface portion in the conveying direction to the winding portion is configured such that the medium is curved at the downstream end when viewed from the width direction. The control portion controls the drive of the winding portion to press the medium onto the surface portion at the plurality of curved portions and the downstream end when the medium is conveyed.

[0013] According to this method, multiple bends are provided on the surface portion in contact with the medium, and the medium transport path is configured such that the medium bends at the downstream end of the surface portion. Furthermore, during medium transport, the medium is pressed against the surface portion at the multiple bends and the downstream end. Therefore, because the medium is forcefully pressed at the bends and the downstream end, the transported elongated medium can be effectively dried. Thus, the drying time of the liquid applied to the medium can be effectively shortened.

[0014] The media drying apparatus of the second aspect of the present invention is characterized in that, in the first aspect, the curved portion has a planar upstream side planar portion and a planar downstream side planar portion disposed on the downstream side of the conveying direction compared to the upstream side planar portion.

[0015] According to this method, the curved section has a planar upstream side planar section and a planar downstream side planar section. Therefore, in addition to the curved section between the upstream side planar section and the downstream side planar section, the planar upstream side planar section and the downstream side planar section can be heated together, thereby making it particularly effective to dry the transported elongated medium.

[0016] The third-party medium drying apparatus of the present invention is characterized in that, in the second aspect, the curved portion has a curved surface that forms a curved surface when viewed from the width direction, between the upstream side planar portion and the downstream side planar portion.

[0017] According to this method, the curved portion has a curved surface between the upstream side planar portion and the downstream side planar portion. Therefore, the contact area between the curved portion and the medium can be increased at the curved portion between the upstream side planar portion and the downstream side planar portion, thereby improving the drying efficiency of the medium at the curved portion.

[0018] The media drying apparatus of the fourth aspect of the present invention is characterized in that, in the second or third aspect, at least one of the plurality of the curved portions, when viewed from the width direction, forms an angle of 20° or more and 180° or less with respect to the upstream side plane portion on the first surface.

[0019] According to this method, the media drying apparatus has a curved portion where, when viewed in the width direction, the angle between the downstream side planar portion and the upstream side planar portion on the first surface is 20° or more and 180° or less. By setting this angle to 20° or more and 180° or less, the media can be pressed with particularly strong force relative to the curved portion. Therefore, the drying efficiency of the media at this curved portion can be improved.

[0020] The fifth aspect of the media drying apparatus of the present invention is characterized in that, in any one of the first to fourth aspects, the control unit controls the drive of the winding section by applying a pressure greater than the weight of the media to the surface section at the plurality of the curved sections and the downstream end section when the media is being conveyed.

[0021] According to this method, a pressure greater than the weight of the medium is applied to the surface at multiple bends and the downstream end during the conveying of the medium. Therefore, the medium can be pressed particularly forcefully relative to the bends and the downstream end, thereby improving the drying efficiency of the medium.

[0022] The media drying apparatus of the sixth aspect of the present invention is characterized in that, in any one of the first to fifth aspects, the media drying apparatus is capable of using multiple types of media as the media, and the control unit is capable of controlling the pressure at which the media is pressed against the surface portion at multiple bends and the downstream end portion when the media is being conveyed, depending on the type of media used.

[0023] According to this method, the control unit controls the pressure at which the medium is pressed against the surface at multiple bends and downstream ends during transport, depending on the type of medium used. Therefore, by using appropriate pressure to press the medium against the surface according to the type of medium used, the transported elongated medium can be dried particularly effectively.

[0024] The media drying apparatus of the seventh aspect of the present invention is characterized in that, in any one of the first to sixth aspects, it includes a pressure detection unit that detects the pressure at which the medium is pressed against the surface portion, and a control unit that feeds back the detection result of the pressure detection unit, thereby controlling the pressure at which the medium is pressed against the surface portion at the plurality of bends and the downstream end portion when the medium is being conveyed.

[0025] According to this method, the medium drying apparatus includes a pressure detection unit and provides feedback on the detection results of the pressure detection unit, thereby controlling the pressure at which the medium is pressed against the surface portion at multiple bends and downstream ends during medium transport. Therefore, by using appropriate pressure, the medium can be continuously pressed against the surface portion, thereby drying the transported elongated medium particularly effectively.

[0026] The media drying apparatus of the eighth aspect of the present invention is characterized in that, in any one of the first to seventh aspects, a temperature detection unit is provided, the temperature detection unit detects the temperature of the surface portion, and the control unit controls the pressure at which the medium is pressed against the surface portion at the plurality of curved portions and the downstream end portion when the medium is being conveyed, based on the detection result of the temperature detection unit.

[0027] According to this method, the media drying apparatus includes a temperature detection unit, and controls the pressure at which the media is pressed against the surface portion at multiple bends and downstream ends during media transport based on the detection results of the temperature detection unit. Therefore, by using appropriate pressure according to the temperature of the surface portion, the media can be pressed against the surface portion, thereby enabling particularly effective drying of the transported elongated media.

[0028] The recording apparatus of the ninth aspect of the present invention is characterized by comprising: a recording unit that sprays ink, which is the liquid, onto the medium; and a medium drying apparatus of any one of the first to eighth aspects.

[0029] According to this method, the recording device includes a recording section that ejects ink and is capable of drying the medium to which the ink has been applied. Therefore, the drying time of the ink applied to the medium can be effectively shortened.

[0030] Hereinafter, embodiments of the present invention will be specifically described with reference to the accompanying drawings. First, referring to... Figure 1 The general outline of the recording apparatus 1 according to Embodiment 1 of the present invention will be described. Furthermore, in Figure 1 In this diagram, some structural components are omitted for ease of understanding. Here, the X-axis is horizontal and extends from the shaft 3 of the medium mounting section 2; the Y-axis is horizontal and perpendicular to the X-axis; and the Z-axis is vertical. Furthermore, in the following text, the direction of the arrow markers will be designated as "+" and the direction opposite to the arrow markers will be designated as "-". For example, the vertical upward direction will be designated as "+Z" and the vertical downward direction as "-Z".

[0031] The recording apparatus 1 of this embodiment includes a media placement section 2 that supports a roll body R1 on which a sheet-like medium M for recording is wound. Furthermore, in the recording apparatus 1 of this embodiment, when the medium M is conveyed in the transport direction A, the shaft portion 3 of the media placement section 2 rotates in the rotation direction C. Additionally, while this embodiment uses a roll body R1 wound with the recording surface facing outwards, if a roll body R1 wound with the recording surface facing inwards were used, the shaft portion 3 could unwind the medium M from the roll body R1 by rotating in the direction opposite to the rotation direction C.

[0032] Furthermore, the recording apparatus 1 of this embodiment includes a transport path for the medium M, which is composed of a medium support portion 20 and the like that supports the medium M. The recording apparatus 1 also includes a transport roller pair 15, consisting of a drive roller 17 and a driven roller 18, for transporting the medium M along the transport path in the transport direction A. In this embodiment, the drive roller 17 is a roller extending in a width direction B intersecting the transport direction A, and multiple driven rollers 18 are arranged opposite the drive roller 17 in the width direction B. However, the structure of the transport portion of the medium M is not particularly limited.

[0033] Furthermore, a heating section 100, which forms part of the media support section 20 and is mounted relative to the recording device 1, is provided on the media support section 20. Here, the heating section 100 can be regarded as a structural component of the recording device 1, and also as a media drying device for drying the media M. Furthermore, the recording device 1 itself can also be regarded as a media drying device having the heating section 100 as a structural component of the recording device 1. In addition, details about the heating section 100 of this embodiment will be described later. Alternatively, it may be configured such that, in addition to the heating section 100 for heating the media M, it also includes a blower or a further heating section for drying the media M.

[0034] Furthermore, the recording device 1 of this embodiment includes a head 19 serving as a recording unit and a carriage 16 inside the frame 11. The head 19 is provided with a plurality of nozzles from which ink is ejected for recording. The carriage 16 mounts the head 19 and is capable of reciprocating in the width direction B. In addition, in the recording device 1 of this embodiment, the transport direction A at the position on the media support 20 opposite to the head 19 is the +Y direction, the movement direction of the head 19 is along the X-axis direction, and the ink ejection direction is the -Z direction.

[0035] Here, a plurality of frames 14 are formed inside the frame portion 11, and a guide rail 13 is formed and is mounted on one of the plurality of frames 14 and extends along the X-axis direction. Furthermore, a carriage 16 with a head 19 is mounted on the guide rail 13.

[0036] According to the above structure, the head 19 can reciprocate in the width direction B, which intersects the transport direction A, while simultaneously ejecting ink from a nozzle (not shown) onto the transported medium M for recording. The recording apparatus 1 of this embodiment repeatedly performs the action of transporting the medium M in the transport direction A with a predetermined transport amount, and then, while the medium M is stopped, moves the head 19 in the width direction B to eject ink, thereby forming a desired image on the recording medium M. However, instead of such a head structure, a so-called linear head structure with a nozzle for ejecting ink integrally spanning the X-axis direction can also be used.

[0037] Furthermore, a winding section 5 is provided on the downstream side of the head 19 in the transport direction A, capable of winding the medium M into a roll body R2. Here, the winding section 5 can also be considered as part of the medium drying apparatus. In addition, in this embodiment, since the medium M is wound with the recording surface facing outwards, the shaft portion 4 of the winding section 5 rotates in the rotation direction C when winding the medium M. On the other hand, when winding with the recording surface facing inwards, the shaft portion 4 can wind the medium M in a manner that rotates in the opposite direction to the rotation direction C.

[0038] Furthermore, a tensioning rod 21 is provided at the downstream end of the surface portion 111 of the heating unit 100 in the conveying direction A. The contact portion of the tensioning rod 21 with the medium M extends in the width direction B, and the tensioning rod 21 is capable of applying the desired tension to the medium M. Here, as Figure 1 As shown, the tension bar 21 and the winding section 5 are configured such that when viewed from the width direction B, the transport path of the medium M from the downstream end of the transport direction A of the surface section 111 to the winding section 5 causes the medium M to bend at the downstream end of the transport direction A of the surface section 111.

[0039] Furthermore, in the recording apparatus 1 of this embodiment, the tensioning rod 21 is provided at the downstream end of the surface portion 111 in a manner continuous with the surface portion 111. Thus, the tensioning rod 21 can be provided either continuously with the surface portion 111 or separately from it. In the configuration where it is separated from the surface portion 111, when the conveying direction A changes when viewed from the width direction B between the surface portion 111 and the tensioning rod 21, the downstream end of the surface portion 111 becomes the top of the surface portion 111. However, even in the configuration where the tensioning rod 21 is separated from the surface portion 111, when the conveying direction A does not change when viewed from the width direction B between the surface portion 111 and the tensioning rod 21, it can still be considered that the tensioning rod 21 is provided at the downstream end of the surface portion 111.

[0040] Next, the electrical structure of the recording device 1 in this embodiment will be described. Figure 2 This is a block diagram illustrating the electrical structure of the recording apparatus 1 according to this embodiment. The control unit 31 includes a CPU 32 that manages the overall control of the recording apparatus 1. The CPU 32 is connected to the storage unit 34 via a system bus 33. The storage unit 34 includes a ROM (Read-Only Memory) storing various control programs executed by the CPU 32 and tables such as Tables 1 to 3 described later, a RAM (Random Access Memory) capable of temporarily storing data, and a non-volatile memory capable of rewriting and storing data, namely an EEPROM (Erasable Programmable Read-Only Memory).

[0041] Here, the CPU 32 is connected via the system bus 33 to a pressure detection unit 35 that detects the pressure of the medium M pressed onto the surface portion 111. Furthermore, the CPU 32 is connected via the system bus 33 to a temperature detection unit 36 ​​that detects the temperature of the surface portion 111. Additionally, the CPU 32 is connected via the system bus 33 to a head drive unit 37 for driving the head 19.

[0042] Furthermore, the CPU 32 is connected to the motor drive unit 38 via the system bus 33, which is connected to the carriage motor 39, the conveyor motor 40, the unwinding motor 41, and the take-up motor 42. Here, the carriage motor 39 is a motor for moving the carriage 16, which carries the head 19, in the width direction B. The conveyor motor 40 is a motor for driving the drive rollers 17 that constitute the conveyor roller pair 15. The unwinding motor 41 is a rotation mechanism for the shaft 3, and it is a motor that drives the shaft 3 to unwind the medium M onto the conveyor roller pair 15. The take-up motor 22 is a drive motor for rotating the shaft 4 of the take-up section 5.

[0043] Furthermore, the CPU 32 is connected via the system bus 33 to a heat source drive unit 45 that drives the heat source unit 120, which serves as the heat source for the heating unit 100. The CPU 32 is also connected via the system bus 33 to an input / output unit 43, which is connected to a PC 44 for transmitting and receiving data and signals, including recorded data.

[0044] Based on this structure, the control unit 31 of this embodiment can control the head 19, drive roller 17, carriage 16, heat source 120, and winding unit 5. Furthermore, by controlling the head 19, drive roller 17, carriage 16, heat source 120, and winding unit 5 by the control unit 31, the recording apparatus 1 of this embodiment is capable of performing recording by alternately and repeatedly conveying a predetermined amount of medium M and ejecting ink while the head 19 moves in the width direction B, simultaneously heating the surface portion 111 and winding the medium M using the shaft portion 4.

[0045] Next, except Figure 1 as well as Figure 2 In addition, further references Figure 3 This document will describe the specific structure of the heating unit 100, a main component of the recording apparatus 1 in this embodiment, and the function of the media drying device in the recording apparatus 1 of this embodiment. The heating unit 100 of this embodiment is a media drying device for drying ink, which is a liquid ejected from the head 19 of the recording apparatus 1 onto the media M. However, as long as the purpose is to dry the transported elongated media M, the heating unit 100 can also be used outside the recording apparatus 1, and can be configured as a media drying device for drying liquids other than ink applied to the media M.

[0046] like Figure 3 As shown, the recording device 1, which is the media drying apparatus of this embodiment, includes a surface portion 111 that contacts the medium M on a first surface 111A. Furthermore, as... Figure 3 As shown, the recording device 1 includes a heat source portion 120 disposed in the surface portion 111 at the second surface 111B side, which is the back side opposite to the first surface 111A. Furthermore, as... Figure 1 As shown, the recording device 1 includes a winding section 5 which is located downstream of the surface section 111 in the transport direction A of the medium M and winds up the medium M. Furthermore, as Figure 2 As shown, the recording device 1 includes a control unit 31 that controls the drive of the take-up unit 5.

[0047] In addition, such as Figure 3 As shown, the surface portion 111 is provided with a plurality of curved portions 130, curved portions 130A and curved portions 130B, which are curved in a manner that makes the first surface 111A convex when viewed from the width direction B. Moreover, as Figure 1As shown, the transport path of the medium from the downstream end of the transport direction A of the surface portion 111 to the winding portion 5 is configured such that, when viewed from the width direction B, the medium M is bent at the downstream end. Here, in the recording device 1 of this embodiment, the control unit 31 controls the drive of the winding portion 5 to press the medium M onto the surface portion 111 at each of the plurality of bending portions 130A and bending portions 130B, and at the tension rod 21 provided at the downstream end, when the medium M is being transported.

[0048] Thus, in this embodiment, the recording apparatus 1 has multiple bends 130 on the surface portion 111 that contacts the medium M, and the transport path of the medium M is configured such that the medium M bends at the downstream end (tension bar 21) of the surface portion 111. Furthermore, when the medium M is transported, it is pressed against the surface portion 111 at the multiple bends 130 and the tension bar 21. Because the recording apparatus 1 of this embodiment employs this structure, the medium M is forcefully pressed against the bends 130 and the tension bar 21, thereby effectively drying the transported elongated medium M. Therefore, the recording apparatus 1 of this embodiment can effectively shorten the drying time of the liquid applied to the medium M.

[0049] Here, from the viewpoint of a recording device, the recording device 1 of this embodiment includes a head 19 for ejecting liquid ink onto a medium M, and a heating section 100, which is a medium drying device as described above. Thus, since the recording device 1 of this embodiment includes the ink ejection recording section, i.e., the head 19, and the heating section 100, the drying time of the ink applied to the medium M can be effectively shortened.

[0050] In addition, such as Figure 3 As shown, the curved portion 130A is configured such that a curved portion 111b is sandwiched between a planar flat portion 111a and a planar flat portion 111c in the conveying direction A. Similarly, as Figure 3 As shown, the curved portion 130B is configured such that a curved portion 111d is sandwiched between a planar flat portion 111c and a planar flat portion 111e in the transport direction A. That is, both curved portions 130 have a planar upstream side planar portion and a planar downstream side planar portion disposed on the downstream side in the transport direction A compared to the upstream side planar portion. Since the recording apparatus 1 of this embodiment adopts this structure, in addition to the curved portion 111b and the curved portion 111d which are the curved portions between the upstream side planar portion and the downstream side planar portion, the planar upstream side planar portion and the downstream side planar portion can be heated together, thus making it particularly effective to dry the transported elongated medium M.

[0051] Furthermore, the curved portion 130A has a curved surface 111b between the planar portion 111a, which is the upstream side planar portion, and the planar portion 111c, which is the downstream side planar portion, forming a curved surface when viewed from the width direction B. Similarly, the curved portion 130B has a curved surface 111d between the planar portion 111c, which is the upstream side planar portion, and the planar portion 111e, which is the downstream side planar portion, forming a curved surface when viewed from the width direction B. Since the recording device 1 of this embodiment has this structure, the contact area with the medium M can be increased at the curved surface 111b and curved surface 111d, which are the curved portions between the upstream side planar portion and the downstream side planar portion, thereby improving the drying efficiency of the medium M at the curved portion. Here, the "curved surface" can be a surface with a fixed curvature or a surface with multiple curvatures. In addition, as described above, in this embodiment, a curved surface is provided between the upstream side planar portion and the downstream side planar portion, but the present invention is not limited to this structure. For example, a surface component with a certain curvature can be used instead of the upstream side plane and the downstream side plane, or a structure with a sharp corner at the top when viewed from the width direction B can be used instead of the curved surface.

[0052] Furthermore, the angle formed by the downstream side plane portion relative to the upstream side plane portion on the first surface 111A side of at least one of the plurality of bends 130 when viewed from the width direction B is preferably 20° or more and 180° or less. This is because by setting this angle to 20° or more and 180° or less, the medium M can be pressed particularly forcefully relative to the bend 130, thereby improving the drying efficiency of the medium M at the bend 130. In addition, this angle is particularly preferably 30° or more, and in this embodiment, the angle is preferably... Figure 3 The angles Θ1 and Θ2 shown are both 31°.

[0053] Furthermore, preferably, when the medium M is being conveyed, the control unit 31 controls the drive of the winding unit 5 in such a way that a pressure greater than the weight of the medium M is applied to the surface portion 111 at the multiple bends 130 and the tension bar 21, which is the downstream end of the surface portion 111. This is because by performing such control, the medium M can be pressed particularly forcefully relative to the bends 130 and the tension bar 21, thereby improving the drying efficiency of the medium M.

[0054] Next, the driving method executable by the recording device 1 in this embodiment will be described. Figure 4 This is a flowchart of one embodiment of a driving method executable by the recording device 1 in this embodiment. Figure 4In the process, firstly, in step S110, preparations are made to begin recording using the recording device 1. Specifically, this means that the user turns on the power to the recording device 1 and places the medium M in the recording device 1, etc.

[0055] Next, in step S120, the user inputs the medium M to be used from the PC44 or an operation panel (not shown). Next, in step S140, the winding of the medium M by the winding unit 5 begins. Control at this time is implemented by the control unit 31 controlling the winding motor 42 via the motor drive unit 38.

[0056] Next, in step S150, the control unit 31 determines the pressure to be applied to the medium M based on the pressure detection result of the medium M pressed onto the surface portion 111 obtained by the pressure detection unit 35 and the temperature detection result of the surface portion 111 obtained by the temperature detection unit 36. Specifically, the recording device 1 of this embodiment can use a variety of media as the medium M, but for example, based on the following tables 1, 2, and 3, the pressure to be applied to the medium M is determined according to the temperature detection result of the surface portion 111 obtained by the temperature detection unit 36. Here, Table 1 corresponds to the case of a thinner and softer medium M, Table 2 corresponds to the case of a medium M with a moderate thickness and moderate softness, and Table 3 corresponds to the case of a thicker and harder medium M.

[0057] Table 1

[0058] Surface temperature (°C) Tension (kgf) 60 1.7 65 1.5 70 1.3 75 1.1 80 0.9

[0059] Table 2

[0060] Surface temperature (°C) Tension (kgf) 60 1.9 65 1.7 70 1.5 75 1.3 80 1.1

[0061] Table 3

[0062] Surface temperature (°C) Tension (kgf) 60 2.1 65 1.9 70 1.7 75 1.5 80 1.3

[0063] In addition, in step S150, the pressure applied to the medium M is determined based on the temperature detection result of the surface portion 111 obtained by the temperature detection unit 36. However, instead of step S150, the step of determining the temperature of the heat source portion 120 is performed based on the pressure detection result of the medium M pressed onto the surface portion 111 obtained by the pressure detection unit 35.

[0064] Next, in step S190, the take-up unit 5 is driven so that the pressure determined in step S150 is applied to the medium M. Specifically, the control at this time is implemented by the control unit 31 controlling the take-up motor 42 via the motor drive unit 38. In addition, steps S150 and S190 are continuously executed as feedback control until the recording that began in step S210, described later, ends.

[0065] Next, in step S200, the readability status is displayed on a monitor or operation panel (not shown) mounted on the PC44. Then, in step S210, recording begins. Specifically, as described above, the control unit 31 controls the head 19, drive roller 17, carriage 16, heat source unit 120, and winding unit 5, thereby enabling the recording apparatus 1 of this embodiment to perform recording by alternately and repeatedly conveying a predetermined amount of the medium M and ejecting ink while the head 19 moves in the width direction B, simultaneously heating the surface portion 111 and winding the medium M using the shaft portion 4. Furthermore, as described above, during recording, the feedback control of steps S150 and S190 is continuously executed.

[0066] Next, refer to Figure 5 The flowchart, and the driving method executable for the recording device 1 in this embodiment, and with Figure 4 Different embodiments of the driving method shown in the flowchart will be described. Additionally, in Figure 5 In the process, for with Figure 4 The same steps in the process are represented by the same step numbers, and the explanations below are omitted.

[0067] exist Figure 5 In the flowchart, the process proceeds from step S120 to step S130 and then to step S140. In step S130, the heat source 120 is driven by the control unit 31 controlling the heat source drive unit 45, thereby initiating the heating of the surface portion 111. Furthermore, the process proceeds from step S140 to step S160.

[0068] In step S160, the control unit 31 determines whether the heating temperature achieved by the heat source unit 120 is appropriate based on the temperature detection result of the surface portion 111 obtained by the temperature detection unit 36. Whether the heating temperature achieved by the heat source unit 120 is appropriate can be determined, for example, by comparing the detection result with a setting value input by the user from a PC 44 or an operation panel not shown. When the control unit 31 determines in step S160 that the heating temperature of the heat source unit 120 is appropriate, it proceeds to step S180. On the other hand, when the control unit 31 determines in step S160 that the heating temperature of the heat source unit 120 is inappropriate, it proceeds to step S170, where the heating temperature achieved by the heat source unit 120 is changed and the process returns to step S160. Steps S160 and S170 are repeated until the control unit 31 determines that the heating temperature of the heat source unit 120 is appropriate.

[0069] In step S180, the control unit 31 determines whether the tension applied to the medium M by the winding unit 5 is appropriate based on the pressure detection result of the medium M pressed onto the surface portion 111 obtained by the pressure detection unit 35. Whether the tension applied to the medium M is appropriate can be determined, for example, by comparing the detection result with a setting value input by the user from a PC 44 or an operation panel not shown. When the control unit 31 determines in step S180 that the pressure detection result of the medium M is appropriate, it proceeds to step S210. On the other hand, when the control unit 31 determines in step S180 that the pressure detection result of the medium M is inappropriate, it proceeds to step S190, in which the winding unit 5 is driven to change the tension applied to the medium M, and the process returns to step S180. Steps S180 and S190 are repeated until the control unit 31 determines that the pressure detection result of the medium M is appropriate.

[0070] As described above, the recording apparatus 1 of this embodiment can use multiple types of media as the medium M. Furthermore, as... Figure 4 As shown in step S150 of the process, the control unit 31 can control the pressure at which the medium M is pressed against the surface portion 111 at the multiple bends 130 and the tension bar 21 at the downstream end during transport, depending on the type of medium M used. Therefore, the recording apparatus 1 of this embodiment can use appropriate pressure to press the medium M against the surface portion 111 according to the type of medium M used, thereby drying the transported elongated medium M particularly effectively.

[0071] Furthermore, as described above, the recording apparatus 1 of this embodiment includes a pressure detection unit 35 that detects the pressure at which the medium M is pressed against the surface portion 111. Moreover, for example, like... Figure 4As shown in steps S150 and S190 of the process, the control unit 31 can provide feedback on the detection results of the pressure detection unit 35, thereby controlling the pressure at which the medium M is pressed against the surface portion 111 at the multiple bends 130 and the tension rod 21 at the downstream end during the transport of the medium M. Therefore, the recording device 1 of this embodiment can use appropriate pressure to continuously press the medium M against the surface portion 111, thereby drying the transported elongated medium M particularly effectively.

[0072] Furthermore, as described above, the recording device 1 of this embodiment includes a temperature detection unit 36 ​​for detecting the temperature of the surface portion 111. Moreover, for example, like... Figure 4 As shown in steps S150 and S190 of the process, the control unit 31 can control the pressure at which the medium M is pressed against the surface portion 111 at the multiple bends 130 and the tension rod 21 at the downstream end during the transport of the medium M, based on the detection result of the temperature detection unit 36. Therefore, the recording device 1 of this embodiment can use appropriate pressure to press the medium M against the surface portion 111 according to the temperature of the surface portion 111, thereby drying the transported elongated medium M particularly effectively.

[0073] This invention is not limited to the embodiments described above, and can be implemented in various structures without departing from its spirit. Furthermore, in order to solve some or all of the above-described problems, or to achieve some or all of the above-described effects, the technical features in the embodiments corresponding to the technical features in the various embodiments described in the summary section can be appropriately replaced or combined. Moreover, any technical feature that is not described as an essential technical feature in this specification can be appropriately omitted.

[0074] Symbol Explanation

[0075] 1…Recording device (media drying device); 2…Media placement section; 3…Shaft section; 4…Shaft section; 5…Rewinding section; 11…Housing section; 12…Mounting section; 13…Guide rail; 14…Frame; 15…Conveyor roller pair; 16…Carriage; 17…Drive roller; 18…Driven roller; 19…Head (recording section); 20…Media support section; 21…Tensioning rod (downstream end); 31…Control section; 32…CPU; 33…System bus; 34…Storage section; 35…Pressure detection section; 36…Temperature detection section; 37…Head drive section; 38…Motor drive section; 39…Carriage… 40… conveyor motor; 41… unwinding motor; 42… winding motor; 43… input / output section; 44… PC; 45… heat source drive section; 100… heating section; 111… surface section; 111a… flat section; 111b… curved section; 111c… flat section; 111d… curved section; 111e… flat section; 111A… first surface; 111B… second surface; 120… heat source section; 130… bending section; 130A… bending section; 130B… bending section; 131… downstream end; M… medium; R1… roll body; R2… roll body.

Claims

1. A medium drying device, characterized in that, It dries the liquid applied to the elongated medium being transported and has the following properties: A surface portion, which contacts the medium on a first surface; A heat source portion is disposed in the surface portion at a second side that is the back side relative to the first surface; A winding section is provided on the downstream side compared to the surface section in the conveying direction of the medium, and winds up the medium; The control unit controls the drive of the winding unit; The temperature detection unit detects the temperature of the surface portion. The surface portion is provided with a plurality of curved portions that are curved in a manner that makes the first surface convex when viewed from a width direction intersecting the conveying direction. The transport path of the medium from the downstream end of the transport direction of the surface portion to the winding portion is configured such that, when viewed from the width direction, the medium is bent at the downstream end. The control unit controls the drive of the winding section during the conveying of the medium in a manner that presses the medium against the surface section at the plurality of bends and the downstream end. The control unit controls the drive of the winding unit based on the detection results of the temperature detection unit, thereby changing the pressure at which the medium is pressed against the surface portion at the multiple bends and the downstream end portion when the medium is being transported.

2. The medium drying apparatus as described in claim 1, characterized in that, The curved portion has a planar upstream side planar portion and a planar downstream side planar portion disposed on the downstream side in the conveying direction compared to the upstream side planar portion.

3. The medium drying apparatus as described in claim 2, characterized in that, The curved portion, located between the upstream side planar portion and the downstream side planar portion, has a curved surface that forms a curved surface when viewed from the width direction.

4. The media drying apparatus as described in claim 2 or 3, characterized in that, The angle between the downstream side plane portion and the upstream side plane portion on the first surface side of at least one of the plurality of curved portions, when viewed from the width direction, is more than 20° and less than 180°.

5. The medium drying apparatus as described in claim 1, characterized in that, The control unit controls the drive of the winding section by applying pressure greater than the weight of the medium to the surface section at the plurality of bends and the downstream end when the medium is being conveyed.

6. The media drying apparatus as described in claim 1, characterized in that, The media drying device can use multiple types of media as the media. The control unit can control the drive of the winding unit according to the type of medium used, thereby changing the pressure at which the medium is pressed against the surface at the multiple bends and the downstream end when the medium is being transported.

7. The media drying apparatus as described in claim 1, characterized in that, It includes a pressure detection unit that detects the pressure at which the medium is pressed against the surface portion. The control unit provides feedback on the detection results of the pressure detection unit and controls the drive of the winding unit to change the pressure at which the medium is pressed against the surface portion at the multiple bends and the downstream end portion when the medium is being transported.

8. A recording device, characterized in that, have: A recording unit that sprays ink, which is the liquid, onto the medium; The media drying apparatus according to any one of claims 1 to 7.

Images