Transport device, recording apparatus, and transport method

Abstract

To suppress fluctuation of tension in a conveying direction applied to a fabric. To suppress the occurrence of wrinkles and floating of a fabric.SOLUTION: Wherein the transport device includes a feeding portion that feeds a fabric wound in a roll shape, a transport belt that transports the fabric fed from the feeding portion to a downstream side in a transport direction, and a transport roller that is provided between the feeding portion and the transport belt, A first tension applying portion that applies tension to the fabric in a transport direction, a second tension applying portion that is provided between the feeding portion and the transport belt and applies tension to the fabric in a width direction, and a control portion are provided, and the control portion controls the first tension applying portion such that a magnitude of tension applied to the fabric is constant when the fabric is transported at a predetermined first transport speed and when the fabric is transported at a second transport speed slower than the first transport speed.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a transport device, a recording device, and a transport method. [Background technology]

[0002] Conventionally, textile printing devices that print images on fabric are known. Fabrics used in textile printing are sometimes distorted, with only the edges of the fabric being stretched excessively. When such distorted fabric is transported, slack occurs in the fabric along the transport path. This slack can cause problems such as rubbing against the print head during printing, clogging the head, or rubbing the surface of the printed fabric, resulting in staining of the fabric. Patent Document 1 discloses a technology that addresses this issue. Patent Document 1 discloses a technology in which a tension applying device applies tension to the surface of a fabric being conveyed in the conveying path between a payout roll and a conveying belt. In Patent Document 1, tension is applied to the fabric in both the conveying direction and the width direction, which intersects the conveying direction, so that the edge of the fabric is pulled downstream in the conveying direction while being stretched in the width direction. This allows the fabric to be conveyed without slack in both the conveying direction and the width direction, thereby suppressing wrinkling and lifting of the fabric after printing. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2004-142889 Summary of the Invention [Problem to be solved by the invention]

[0004] In conventional conveying devices, the conveying speed of the conveyor belt of the fabric may not be constant. Therefore, when the fabric is conveyed at a relatively slow speed or when conveyance is stopped and the fabric is stationary, the tension applied to the fabric in the conveying direction tends to be small. In this case, only the tension applied to the fabric in the width direction tends to act, and wrinkles and slack in the fabric cannot be sufficiently removed. [Means for solving the problem]

[0005] The conveying device of the present disclosure includes a payout section that pays out a roll of fabric, a conveying belt that conveys the fabric paid out from the payout section downstream in the conveying direction, a first tensioning section that is provided between the payout section and the conveying belt and applies tension to the fabric in the conveying direction, a second tensioning section that is provided between the payout section and the conveying belt and applies tension to the fabric in the width direction, and a control section, wherein the control section controls the first tensioning section so that the amount of tension applied to the fabric is constant when the fabric is conveyed at a predetermined first conveying speed and when the fabric is conveyed at a second conveying speed that is slower than the first conveying speed.

[0006] The recording device of the present disclosure includes a payout section that pays out a roll of fabric, a conveying belt that conveys the fabric paid out from the payout section downstream in the conveying direction, a first tensioning section that is provided between the payout section and the conveying belt and applies tension to the fabric in the conveying direction, a second tensioning section that is provided between the payout section and the conveying belt and applies tension to the fabric in the width direction, a recording section that records on the fabric conveyed by the conveying belt, and a control section, wherein the control section controls the first tensioning section so that the amount of tension applied to the fabric is constant when the fabric is conveyed at a predetermined first conveying speed and when the fabric is conveyed at a second conveying speed that is slower than the first conveying speed.

[0007] The conveying method disclosed herein is a conveying method for a conveying device including a payout section that pays out a roll of fabric, a conveying belt that conveys the fabric paid out from the payout section downstream in the conveying direction, a first tensioning section that is provided between the payout section and the conveying belt and applies tension to the fabric in the conveying direction, and a second tensioning section that is provided between the payout section and the conveying belt and applies tension to the fabric in the width direction, the conveying method comprising causing the first tensioning section to apply tension to the fabric so that the magnitude of the tension applied to the fabric is constant when the fabric is conveyed at a predetermined first conveying speed and when the fabric is conveyed at a second conveying speed that is slower than the first conveying speed. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. [Figure 2] FIG. 2 is a perspective view showing the periphery of a guide portion of the recording apparatus. [Figure 3] FIG. 2 is a block diagram showing the main configuration of a control system of the printing apparatus. [Figure 4] 10 is a graph showing the relationship between the fabric conveying speed and the tension applied to the fabric. [Figure 5] 10A and 10B are diagrams showing the operation of the guide portion. [Figure 6] 10A and 10B are diagrams showing the operation of a friction roller. [Figure 7] FIG. 4 is a diagram showing a friction roller movement mechanism. [Figure 8] 10A and 10B are diagrams showing the operation of the guide portion. DETAILED DESCRIPTION OF THE INVENTION

[0009] 1. First Embodiment FIG. 1 is a schematic side view of the recording device 1. As shown in FIG. The recording device 1 of the present disclosure is a textile printing machine that prints an image on a fabric M based on print data.

[0010] The recording device 1 has a conveying device 2 that conveys fabric M as a recording medium, and a recording unit 21 that records an image on the fabric M conveyed by the conveying device 2. In the following description, the terms upstream and downstream are used relative to the conveying direction in which the fabric M is conveyed. That is, upstream means upstream in the conveying direction, and downstream means downstream in the conveying direction.

[0011] The conveying device 2 includes a payout section 10 that pays out the fabric M, a group of rollers 24 that assist in the conveyance of the fabric M paid out from the payout section 10, a guide section 11 that guides the fabric M conveyed from the group of rollers 24, and a conveying belt 15 that conveys the guided fabric M.

[0012] The unwinding unit 10 holds a roll R of fabric M wound in a roll shape. The unwinding unit 10 rotates with the roll R set therein, thereby unwinding the fabric M to a group of rollers 24 downstream in the conveyance direction.

[0013] The roller group 24 is composed of a plurality of driven rollers 25 that guide the fabric M in a predetermined conveying direction, and friction rollers 26 that apply tension to the fabric M so that the fabric M is maintained in contact with the driven rollers 25. In the roller group 24, the fabric M that has been paid out from the payout unit 10 is conveyed to the guide unit 11 via the roller group 24. The fabric M that has been conveyed from the roller group 24 is guided by the guide unit 11 and conveyed to the conveyor belt 15.

[0014] The conveyor belt 15 is an endless belt and is looped around a tail pulley 16 and a head pulley 17 located downstream of the tail pulley 16. The outer circumferential surface of the conveyor belt 15 is coated with an adhesive.

[0015] A pressure unit 18 for applying pressure to the fabric M and the conveyor belt 15 is provided upstream of the conveyor belt 15 . The pressure unit 18 has a pressure roller 19 that applies pressure to the outer circumferential surface of the conveyor belt 15, and a support unit 20 that supports the conveyor belt 15 from the inner circumferential surface of the conveyor belt 15.

[0016] The pressure roller 19 presses the fabric M, which has been guided and conveyed by the guide unit 11, toward the support unit 20. As a result, the adhesive on the outer circumferential surface of the conveyor belt 15 comes into contact with the fabric M, and the fabric M is adhered to the outer circumferential surface of the conveyor belt 15.

[0017] The conveyor belt 15 rotates together with the tail pulley 16 when the head pulley 17 is rotated by a conveyor motor 16a (described later). As a result, the fabric M attached to the conveyor belt 15 is continuously conveyed downstream in the conveying direction.

[0018] A recording unit 21 is provided downstream of the conveyor belt 15. The recording unit 21 includes a printing unit 22 that records an image on the fabric M, and a printing platen 23 that supports the conveyor belt 15 from its inner circumferential surface.

[0019] The printing unit 22 has a plurality of nozzles that eject ink and an ink storage unit that supplies ink to the nozzles. Ink is supplied to the ink storage unit from an ink tank (not shown). The printing unit 22 ejects liquid ink while moving back and forth in the main scanning direction, and prints an image on the fabric M on the conveyor belt.

[0020] More specifically, the recording unit 21 repeats a conveying cycle P1 in which the conveyor belt 15 conveys the fabric M a predetermined amount, and a printing cycle P2 in which the printing unit 22 moves back and forth to print an image when the conveyor belt 15 finishes operating and stops conveying the fabric M. In this way, the recording unit 21 records an image on the fabric M. That is, the recording device 1 of this embodiment performs printing using a so-called serial head method.

[0021] Incidentally, in the production stage of the fabric M and the surface treatment process of the fabric M, there is a step in which the fabric M is conveyed by piercing both widthwise ends of the fabric M with needle-like conveying means. Therefore, in general, distortion of the fabric M occurs due to excessive stretching of only both widthwise ends of the fabric M or waving of the fabric M.

[0022] When such distorted fabric M is transported, slack occurs in the fabric M along the transport path. Slack in the fabric M can cause contact between the printing unit 22 and the fabric M during printing, potentially resulting in problems such as ink clogging in the nozzles of the printing unit 22 or rubbing against the surface of the printed fabric M, resulting in soiling of the fabric M. Furthermore, this can cause wrinkles or lifting of the fabric M after printing, and there is concern that the printed surface may become distorted as the slack in the fabric M returns to its original state. Therefore, it is desirable to attach the fabric M to the transport belt 15 without slack during printing. In other words, it is desirable for the fabric M to be in a state where slack is eliminated when it reaches the pressure unit 18. Specifically, it is desirable for the fabric M to be in a state where slack is eliminated in the pressure portion of the pressure roller 19 when the pressure roller 19 applies pressure.

[0023] FIG. 2 is a perspective view showing the periphery of the guide portion 11 of the recording device 1. As shown in FIG. The conveying device 2 of this embodiment applies tension to the fabric M in the width direction while applying tension to the fabric M in the conveying direction, thereby removing slack in the fabric M during conveyance. In this embodiment, a guide portion 11 and a friction roller 26 are provided to apply tension to the fabric M in the conveying direction. The guide portion 11 is an example of a “first tension applying portion” and an example of a “second tension applying portion.” The friction roller 26 is an example of a “first tension applying portion.”

[0024] First, a method for applying tension to the fabric M by the guide portion 11 will be described. The guide unit 11 is attached to the recording device 1 and is a roller for removing wrinkles. The guide unit 11 is rotatably supported. The guide unit 11 receives a driving force from a second motor 11a shown in FIG. 3 and rotates. The guide unit 11 of this embodiment is configured to extend in the axial direction when rotating. A so-called expander roll can be applied to the guide unit 11 of this embodiment.

[0025] Specifically, the guide portion 11 has a plurality of slide bars 12 provided on its outer peripheral surface. The slide bars 12 are arranged in a line in the circumferential direction, and the plurality of slide bars 12 are arranged in a cylindrical shape. The slide bars 12 have flat slat plates 13 that extend in the width direction of the fabric M, i.e., in the axial direction. The slide bar 12 in this embodiment is formed by three slat plates 13 lined up in the width direction of the fabric M.

[0026] The slat plates 13 are formed of a material such as rubber that generates a frictional force when they come into contact with the fabric M. When the guide portion 11 comes into contact with the fabric M, the slat plates 13 apply a predetermined frictional force to the fabric M, so that tension can be applied to the fabric M in the conveying direction as the guide portion 11 rotates.

[0027] Furthermore, as the guide portion 11 rotates, the slat plates 13 at both ends of the slide bar 12 are configured to move back and forth in the width direction of the fabric M. As a result, the slat plates 13 arranged at both ends of the slide bar 12 move back and forth in the width direction during rotation, and tension can be applied not only in the conveyance direction of the fabric M but also in the width direction.

[0028] More specifically, when the guide portion 11 is in contact with the fabric M during transport, the slat plates 13 perform an unfolding operation, moving outward in the width direction of the fabric M. This generates a frictional force between the fabric M and the slat plates 13, and tension acts on the fabric M outward in the width direction. When the guide portion 11 is not in contact with the fabric M, the slat plates 13 perform a retracting operation, moving inward in the width direction of the fabric M. This returns the fabric M to the state it was in before the unfolding operation, where no frictional force acts on the fabric M outward in the width direction. Because the slat plates 13 perform the unfolding and retracting operations successively in this way, tension can be continuously applied to the fabric M outward in the width direction as the guide portion 11 rotates.

[0029] As described above, the rotation of the guide portion 11 allows tension to be applied to the fabric M in both the conveying direction and the width direction at the same time, thereby suppressing slack in the fabric M in the conveying direction and the width direction and preventing wrinkles and lifting of the fabric M.

[0030] Next, a method for applying tension to the fabric M by the friction roller 26 will be described. The surface of the friction roller 26 is formed so as to generate a friction force when it comes into contact with the fabric M, similar to the slat plate 13 .

[0031] The friction roller 26 is arranged to be rotatable by a first motor 26a shown in FIG. 3. A brake mechanism (not shown) is provided on the rotation shaft of the friction roller 26. The brake mechanism restricts the friction roller 26 from rotating in a direction that transports the fabric M downstream in the transport direction. This limits the rotation direction of the friction roller 26 to a direction that transports the fabric M upstream in the transport direction, i.e., the S1 direction shown in FIG. 2. As shown in FIG. 2, when the friction roller 26 rotates in the S1 direction or stops, tension can be applied to the fabric M against the force that transports the fabric M downstream in the transport direction.

[0032] In this way, a strong tension can be applied to the fabric M in the direction in which it is conveyed upstream in the conveying direction.

[0033] FIG. 3 is a block diagram showing the main configuration of the control system of the recording device 1. As shown in FIG. The recording device 1 includes a control unit 100 that controls each unit of the recording device 1. The control unit 100 includes a processor 110 and a storage unit 120. The processor 110 is an arithmetic processing unit configured with a CPU, a DSP, a microcomputer, etc. The processor 110 may be configured with multiple pieces of hardware, or may be configured with a single processor. The processor 110 may also be hardware programmed to realize the functions of each unit described below. In other words, the processor 110 may be configured with a control program installed as a hardware circuit. In this case, the processor 110 may be configured with, for example, an ASIC or an FPGA.

[0034] The processor 110 executes a control program to realize various functions of the control unit 100. CPU is an abbreviation for Central Processing Unit. DSP is an abbreviation for Digital Signal Processor. ASIC is an abbreviation for Application Specific Integrated Circuit. FPGA is an abbreviation for Field Programmable Gate Array.

[0035] The storage unit 120 has a storage area for storing the control program executed by the processor 110 and the data processed by the processor 110. The storage unit 120 stores the control program executed by the processor 110 and setting data including various setting values ​​related to the operation of the recording device 1. The storage unit 120 has a non-volatile storage area for non-volatilely storing the control program and data. The storage unit 120 may also have a volatile storage area and constitute a print medium area for temporarily storing the control program executed by the processor 110 and the data to be processed.

[0036] An interface 150 is connected to the control unit 100. The interface 150 is abbreviated as I / F in FIG. 3. The interface 150 is a USB or LAN, and is connected to an external device of the recording device 1 via a wired or wireless connection. The interface 150 includes, for example, a connector for connecting a cable and an interface circuit for transmitting an electrical signal via the cable. The interface 150 may also be a wireless communication module having an antenna or an RF circuit. The external device of the recording device 1 is, for example, a computer or a server device. When the control unit 100 receives image data from an external device via the interface 150, the control unit 100 stores the received image data in the storage unit 120. When the control unit 100 receives print job data instructing printing from an external device via the interface 150, the control unit 100 stores the received print job data in the storage unit 120. USB is an abbreviation for Universal Serial Bus. LAN is an abbreviation for Local Area Network.

[0037] An operation panel 160 is connected to the control unit 100. The operation panel 160 is arranged on the exterior of the main body of the recording device 1, and includes a touch panel 161 as an example of an input unit and an LED indicator 162 as an example of an output unit. The control unit 100 detects operations on the touch panel 161. The control unit 100 also controls the lighting and blinking of the LED indicator 162 depending on the operating state of the recording device 1. LED is an abbreviation for Light Emitting Diode.

[0038] The control unit 100 receives a detected value from a speed sensor 170 that detects the conveying speed.

[0039] The conveying section 220 includes elements related to conveying the fabric M. The conveying section 220 includes, as elements related to the conveyance of the fabric M by the conveyor belt 15, a conveying motor 16a, a power transmission mechanism that transmits the power of the conveying motor 16a to the head pulley 17, and a motor driver that drives the conveying motor 16a.

[0040] Furthermore, the conveying section 220 includes, as elements related to the conveyance of the fabric M by the unwinding section 10, a unwinding motor 10a, a power transmission mechanism that transmits the power of the unwinding motor 10a to the unwinding section 10, and a motor driver that drives the unwinding motor 10a. The conveying unit 220 drives the conveying motor 16a and the unwinding motor 10a under the control of the control unit 100 to rotate the head pulley 17 and the unwinding unit 10, thereby conveying the fabric M unwound from the roll body R.

[0041] The recording unit 21 includes elements related to printing. The recording unit 21 operates the printing unit 22 under the control of the control unit 100, and prints an image on the fabric M conveyed to the recording unit 21.

[0042] In this embodiment, when the recording device 1 is powered on and a print job is received, the control unit 100 executes printing on the fabric M based on the print job. When executing printing, the control unit 100 controls the conveying unit 220 and the printing unit 22 to repeat conveying operation control that controls the operation in a conveying cycle P1 and printing operation control that controls the operation in a printing cycle P2.

[0043] In detail, the control unit 100 controls the conveying unit 220 to execute conveying operation control for conveying the fabric M a predetermined amount downstream in the conveying direction at a timing corresponding to the timing of pass printing by the printing unit 22. Furthermore, when the conveying operation control ends, the control unit 100 controls the printing unit 22 to execute printing operation control for performing pass printing with the printing unit 22, which is a serial head. Images are printed sequentially on the fabric M by alternately repeating a conveying cycle P1 and a printing cycle P2. The printing operation control is an example of a second conveying speed conveying operation and an example of a conveying stop operation control.

[0044] The tension applying section 180 includes elements for applying tension to the fabric M. The tension applying unit 180 includes, as elements related to the first tension applying unit, a first motor 26a as a drive source for the friction roller 26, a power transmission mechanism that transmits the power of the first motor 26a to the friction roller 26, and a motor driver that drives the first motor 26a. For example, the control unit 100 can apply tension in the conveying direction to the fabric M between the pressure applying unit 18 and the friction roller 26 by controlling the friction roller 26 to rotate in the opposite direction to the conveying direction.

[0045] Furthermore, the tension applying unit 180 includes, as elements related to the second tension applying unit, a second motor 11a as a drive source for the guide unit 11, a power transmission mechanism that transmits the power of the second motor 11a to the guide unit 11, and a motor driver that drives the second motor 11a. In this embodiment, the control unit 100 rotates and stops the guide unit 11, thereby applying tension to the fabric M in contact with the guide unit 11 outward in the width direction. The control unit 100 rotates the first motor 26a and the second motor 11a based on the input of the values ​​detected by each of the speed sensors 170, so as to apply a constant tension to the fabric M in the conveyance direction.

[0046] FIG. 4 is a graph showing the relationship between the conveying speed of the fabric M in the recording device 1 and the tension applied to the fabric M. In the upper graph of FIG. 4, the vertical axis represents the conveying speed, and the horizontal axis represents the passage of time. In the lower graph of FIG. 4, the vertical axis represents the magnitude of the tension applied to the fabric M, and the horizontal axis represents the passage of time. In the upper and lower graphs of FIG. 4, the same position on the horizontal axis indicates that the same amount of time has passed.

[0047] As described above, the recording device 1 is a serial head type, and the recording device 1 of this embodiment records images by repeating a conveyance cycle P1 and a printing cycle P2. The conveyance cycle P1 has an acceleration period P1a in which the conveyor belt 15 is accelerated to a predetermined speed, a constant speed period P1b after the acceleration period P1a in which the conveyor belt 15 moves at a constant speed, and a deceleration period P1c after the constant speed period P1b in which the speed is decelerated and the conveyor belt 15 is stopped. In other words, when the speed during the constant speed period P1b is the first conveying speed V1, the conveying speed is slower than the first conveying speed V1 during the acceleration period P1a, the deceleration period P1c, and the printing cycle P2. Therefore, the second conveying speed V2 at a predetermined time, which is the reference speed, is slower than the first conveying speed V1. The second conveying speed V2 in this embodiment is the stopping speed, i.e., 0. The acceleration period P1a is an example of an "acceleration region." The constant speed period P1b is an example of a "constant speed region." The deceleration period P1c is an example of a "deceleration region."

[0048] This conveying speed can be detected by a speed sensor 170. The speed detected by the speed sensor 170 is input to the control unit 100 in the recording device 1. Accordingly, the control unit 100 controls the tension applying unit 180 based on the conveying speed detected by the speed sensor 170, thereby adjusting the tension applied to the fabric M to be constant.

[0049] That is, the control unit 100 calculates the time difference of the conveying speed measured by the speed sensor 170 and determines whether the time difference has increased or decreased. If the time difference of the conveying speed measured by the speed sensor 170 is increasing, the control unit 100 determines that the conveying cycle P1 is in the acceleration period P1a. If the control unit 100 determines that the conveying cycle P1 is in the acceleration period P1a, it controls the first motor 26a to decrease the rotation speed toward the upstream side in the conveying direction. That is, the control unit 100 controls the rotation speed of the friction roller 26 in the S1 direction to decrease. As a result, during the acceleration period P1a, the fabric M is conveyed downstream in the conveying direction while accelerating, while the force of the friction roller 26 toward the upstream side in the conveying direction relative to the direction in which the fabric M is conveyed downstream in the conveying direction, i.e., the amount of tension applied to the fabric M by the friction roller 26, decreases. Here, the faster the conveying speed of the fabric M, the greater the tension of the fabric M caused by the friction roller 26. In this embodiment, the amount of tension on the friction roller 26 is reduced during the acceleration period P1a in which the fabric material M accelerates. Therefore, the tension applied to the fabric material M is easily maintained during the acceleration period P1a.

[0050] Furthermore, when the control unit 100 determines that the time difference in the conveying speed measured by the speed sensor 170 is 0, the control unit 100 determines whether the conveying speed measured by the speed sensor 170 is equal to or greater than a predetermined threshold. When the control unit 100 determines that the time difference is equal to or greater than the predetermined threshold, the control unit 100 determines that the sheet is in a constant speed period P1b in the conveying cycle P1. When the control unit 100 determines that the time difference is less than the predetermined threshold, the control unit 100 determines that the sheet is in a printing cycle P2. Note that instead of a configuration that determines whether the time difference in the conveying speed measured by the speed sensor 170 is 0, the control unit 100 may determine whether the time difference in the conveying speed measured by the speed sensor 170 is equal to or less than a predetermined small value.

[0051] When the control unit 100 determines that the constant speed period P1b is in, it controls the first motor 26a to rotate at a very low speed toward the upstream side in the conveying direction, or to zero. That is, the control unit 100 controls the friction roller 26 to rotate at a predetermined speed or to maintain a stopped state. As a result, during the constant speed period P1b, the fabric M is conveyed downstream in the conveying direction while maintaining a predetermined first conveying speed V1, while a constant force is applied by the friction roller 26. Even during the constant speed period P1b, the tension applied to the fabric M is easily maintained.

[0052] Furthermore, when the time difference of the conveying speed detected by the speed sensor 170 is decreasing, the control unit 100 determines that the sheet is in the deceleration period P1c in the conveying cycle P1. When the control unit 100 determines that the deceleration period P1c is in progress, it controls the first motor 26a to increase the rotation speed of the first motor 26a toward the upstream side in the conveying direction. That is, the control of the control unit 100 increases the rotation speed of the friction roller 26 in the S1 direction. As a result, during the deceleration period P1c, the fabric M is conveyed downstream in the conveying direction while decelerating, while the amount of tension applied by the friction roller 26 increases. Therefore, during the deceleration period P1c, the tension applied to the fabric M is more easily maintained than during the constant speed period P1b.

[0053] When the control unit 100 determines that the printing cycle P2 is in progress, it controls the first motor 26a to maintain the rotation speed of the first motor 26a toward the upstream side in the conveyance direction at a predetermined rotation speed. That is, the control unit 100 controls the friction roller 26 to maintain a state in which it rotates at a predetermined rotation speed in the S1 direction. As a result, even if the conveyance of the fabric M is stopped during the printing cycle P2, a large amount of tension continues to be applied by the friction roller 26 in the direction conveying the fabric M toward the upstream side in the conveyance direction. Therefore, the tension applied to the fabric M is easily maintained during the printing cycle P2 as well.

[0054] Note that the specific control method for the first motor 26a during the acceleration period P1a, constant speed period P1b, and deceleration period P1c of the conveyance period P1, and during the printing period P2, is specified and set in advance through experiments, etc. As a result, the first motor 26a is controlled so as to maintain tension with a small fluctuation range, that is, a constant tension, as shown by the solid line in the lower part of Figure 4.

[0055] In other words, the control unit 100 controls the conveying belt 15 and the friction roller 26 to keep constant the first tension T1 applied in the conveying direction of the fabric M at the first conveying speed V1 and the second tension T2 applied in the conveying direction of the fabric M at the second conveying speed V2.

[0056] In this way, the friction roller 26 changes the amount of tension in the conveying direction applied to the fabric M depending on the conveying speed of the fabric M, thereby keeping the tension applied to the fabric M constant, thereby suppressing fluctuations in the tension in the conveying direction relative to the tension in the width direction applied to the fabric M.

[0057] As described above, distortion of the fabric M can cause the fabric M to slacken in the transport path, which may result in a decrease in image recording quality during and after image recording. In order to eliminate the slack caused by distortion of the fabric M, conventional textile printing machines apply tension to the fabric M in the transport direction as well as in the width direction.

[0058] However, in the case of a serial head recording device 1, since images are recorded by repeating a conveyance cycle P1 and a printing cycle P2, the conveyance operation within the recording device 1 must be stopped during the printing cycle P2. When conveyance is stopped in this manner, the roller group 24 also stops. Here, if the friction roller is fixed and not rotating, the tension on the fabric M also increases or decreases as the conveyance speed increases or decreases. Specifically, as shown in FIG. 4, if the conveyance speed increases as in the acceleration period P1a, the force pulling the fabric M between the downstream conveyance member and the friction roller tends to increase, and the tension applied to the fabric M also increases, as indicated by the two-dot chain line at the bottom of FIG. 4. On the other hand, if the conveyance speed decreases as in the deceleration period P1c, the force pulling the fabric M between the downstream conveyance member and the friction roller tends to decrease, and the tension applied to the fabric M also decreases. If the conveyance speed is constant, as shown in the constant speed period P1b and the printing cycle P2, the tension applied to the fabric M also remains constant. That is, the trajectory of the graph of the conveying speed and tension (two-dot chain line) will be the same. In other words, the second tension T2' applied in the conveying direction of the fabric M by the second conveying speed V2 fluctuates relative to the first tension T1 applied in the conveying direction of the fabric M by the first conveying speed V1. Therefore, in the serial head type recording device 1, the balance between the tension in the conveying direction and the tension in the width direction will be lost, and there is a concern that the slack in the fabric M will not be completely removed. Therefore, even when tension in the width direction is applied to the fabric M while the conveyance of the fabric M is stopped, it is desirable to continue applying tension in the conveying direction of the fabric M to balance the tension in the conveying direction and the tension in the width direction.

[0059] In contrast to this, in the present embodiment, the amount of tension in the feed direction applied to the fabric M is adjusted according to the feed speed of the fabric M, and therefore it is possible to suppress fluctuations in the tension in the feed direction applied to the fabric M when tension in the width direction is applied. Therefore, by balancing the tension in the feed direction and the tension in the width direction, it is possible to suppress slack in the fabric M during conveyance.

[0060] As described above, the conveying device 2 of this embodiment includes the unwinding unit 10 that unwinds the fabric M wound in a roll, and the conveying belt 15 that conveys the fabric M unwound from the unwinding unit 10 downstream in the conveying direction. The conveying device 2 also includes the guide unit 11 and friction roller 26 that apply tension to the fabric M in the conveying direction, the guide unit 11 that applies tension in the width direction, and the control unit 100. The guide unit 11 and friction roller 26 are provided between the unwinding unit 10 and the conveying belt 15. At this time, the fabric M is transported at a predetermined first transport speed V1 or a second transport speed V2 that is slower than the first transport speed V1. The control unit 100 controls the guide unit 11 and the friction roller 26 so that the amount of tension applied to the fabric M is the same when the fabric M is conveyed at the first conveying speed V1 and when the fabric M is conveyed at the second conveying speed V2. Generally, the tension applied to the fabric M in the conveying direction fluctuates as the conveying speed of the fabric M changes, but with the above configuration, the control unit 100 controls the friction roller 26, thereby suppressing fluctuations in the tension applied to the fabric M in the conveying direction, regardless of the conveying speed of the fabric M. Therefore, when applying tension in the width direction by the guide unit 11, an appropriate tension can also be applied in the conveying direction. This makes it possible to suppress slack in the fabric M, thereby suppressing the occurrence of wrinkles and lifting in the fabric M.

[0061] In addition, in this embodiment, when the fabric material M is conveyed at the second conveying speed V2, the control unit 100 controls the friction roller 26 to rotate in a direction that conveys the fabric material M upstream in the conveying direction. Even when the tension applied to the fabric M varies with a change in the conveying speed of the fabric M, the control unit 100 controls the rotation of the friction roller 26 to adjust the tension applied to the fabric M. Therefore, regardless of the conveying speed of the fabric M, when applying tension in the width direction, it is possible to suppress fluctuations in the tension applied to the fabric M in the conveying direction.

[0062] In this embodiment, the control unit 100 alternately controls the conveyor belt 15 to convey a predetermined amount of fabric M and to stop the conveyance of the fabric M. The control unit 100 controls the friction roller 26 so that the magnitude of tension applied to the fabric M is constant during the execution of the conveying operation control and the execution of the stopping operation control. Even when the conveyance of the fabric M is stopped, a desired tension can be applied to the fabric M. Therefore, regardless of the conveyance speed of the fabric M, when applying tension in the width direction, fluctuations in the tension applied to the fabric M in the conveyance direction can be suppressed.

[0063] Furthermore, the conveying speed in a conveying cycle P1 when the conveyor belt 15 makes one rotation transitions through an acceleration period P1a in which the conveying speed of the fabric M increases over time, a constant speed period P1b in which the conveying speed of the fabric M is constant, and a deceleration period P1c in which the conveying speed of the fabric M decreases over time. The constant speed period P1b is the period following the acceleration period P1a. The deceleration period P1c is the period following the constant speed period P1b. The control unit 100 controls the friction roller 26 so that the amount of tension that the friction roller 26 applies to the fabric M gradually decreases during the acceleration period P1a, and the amount of tension that the friction roller 26 applies to the fabric M gradually increases during the deceleration period P1c. As the conveying speed of the fabric M slows, the rotation speed of the friction roller 26 increases, so regardless of the conveying speed of the fabric M, fluctuations in the tension applied to the fabric M in the conveying direction can be suppressed.

[0064] Recording device 1 of this embodiment includes a payout unit 10 that pays out fabric M wound in a roll, and a conveyor belt 15 that conveys fabric M paid out from payout unit 10 downstream in the conveyance direction. Conveyor device 2 also includes guide unit 11 and friction roller 26 that apply tension to fabric M in the conveyance direction, guide unit 11 that applies tension in the width direction, recording unit 21 that records on fabric M conveyed by conveyor belt 15, and control unit 100. Friction roller 26 and guide unit 11 are provided between payout unit 10 and conveyor belt 15. At this time, the fabric M is conveyed at a predetermined first conveying speed V1 or a second conveying speed V2 slower than the first conveying speed V1. The control unit 100 controls the friction roller 26 so that the magnitude of tension applied to the fabric M is constant when the fabric M is conveyed at the first conveying speed V1 and when the fabric M is conveyed at the second conveying speed V2. Generally, the tension applied to the fabric M in the conveying direction fluctuates as the conveying speed of the fabric M changes, but with the above configuration, the control unit 100 controls the friction roller 26, thereby suppressing fluctuations in the tension applied to the fabric M in the conveying direction, regardless of the conveying speed of the fabric M. Therefore, when applying tension in the width direction by the guide unit 11, an appropriate tension can also be applied in the conveying direction. This makes it possible to suppress slack in the fabric M, thereby suppressing the occurrence of wrinkles and lifting in the fabric M.

[0065] In the conveying method of this embodiment, the friction roller 26 applies tension to the fabric M so that the amount of tension applied to the fabric M is constant when the fabric M is conveyed by the conveying device 2 at a predetermined first conveying speed V1 and when the fabric M is conveyed at a second conveying speed V2 that is slower than the first conveying speed. Generally, the tension applied to the fabric M in the conveying direction fluctuates as the conveying speed of the fabric M changes. According to the above configuration, by increasing the friction roller speed at the second conveying speed V2, which is slower than the first conveying speed V1, it is possible to suppress fluctuations in the tension applied to the fabric M in the conveying direction. Therefore, when applying tension in the width direction, it is possible to apply appropriate tension in the conveying direction as well. This makes it possible to suppress slack in the fabric M, thereby suppressing the occurrence of wrinkles and lifting in the fabric M.

[0066] 2. Second Embodiment A second embodiment to which the present disclosure is applied will be described. In this second embodiment, parts configured in the same manner as in the first embodiment will be given the same reference numerals and descriptions thereof will be omitted.

[0067] FIG. 5 is a diagram showing the operation of the guide portion 11 functioning as the first tension applying portion. In the above-described first embodiment, the friction roller 26 can rotate in a direction that transports the fabric M upstream in the transport direction, thereby applying tension to the fabric M. In the second embodiment, the guide unit 11 functions as a "first tension applying unit" instead of the friction roller 26. That is, in the second embodiment, the friction roller 26 is rotatably supported. The rotational position of the friction roller 26 is fixed. The friction roller 26 rotates in response to the fabric M. As shown in FIG. 5, the guide unit 11 is supported so as to be rotatable in the S2 direction that transports the fabric M upstream in the transport direction. In the second embodiment, tension is applied to the fabric M by the guide unit 11 rotating in the S2 direction. The guide unit 11 is configured to be capable of forward and reverse drive control. The configuration of the friction roller 26, such as the tension applying unit 180 of the first embodiment, can be applied to the configuration of the guide unit 11 that can be forward and reverse driven.

[0068] In the second embodiment, the friction roller 26 applies tension to the fabric M only by the frictional force of its surface. The guide unit 11 normally rotates in a direction that transports the fabric M downstream in the transport direction, but can be driven to rotate in a direction that transports the fabric M upstream in the transport direction as needed. As a result, the control unit 100 controls the rotation of the guide unit 11 in the direction that transports the fabric M upstream in the transport direction in accordance with the speed detected by the speed sensor 170, thereby making it possible to adjust the tension applied to the fabric M in accordance with the transport speed of the fabric M.

[0069] As described above, in the conveying device 2 of this embodiment, when the fabric M is conveyed at the second conveying speed V2, the control unit 100 controls the guide unit 11 to rotate in a direction that conveys the fabric M upstream in the conveying direction. Even when the tension applied to the fabric M varies with a change in the conveying speed of the fabric M, the control unit 100 controls the rotation of the guide unit 11 to adjust the tension applied to the fabric M. Therefore, regardless of the conveying speed of the fabric M, when applying tension in the width direction, it is possible to suppress fluctuations in the tension applied to the fabric M in the conveying direction.

[0070] 3. Third Embodiment A third embodiment to which the present disclosure is applied will be described. In this third embodiment, parts configured in the same manner as in the first embodiment will be given the same reference numerals and descriptions thereof will be omitted.

[0071] FIG. 6 is a diagram illustrating the operation of the friction roller 26. In the above-described first embodiment, the friction roller 26 can rotate in a direction conveying the fabric M upstream in the conveyance direction, thereby applying tension to the fabric M. In the third embodiment, as shown in FIG. 6 , tension is applied to the fabric M by moving the friction roller 26 in a direction away from the conveyance member downstream of the friction roller 26, for example, in the S3 direction. That is, in this embodiment, by moving the friction roller 26 in the S3 direction away from the conveyor belt 15, the amount of tension applied to the fabric M in the conveyance direction is increased. In addition, by moving the friction roller 26 in a direction approaching the conveyor belt 15, the amount of tension applied to the fabric M is reduced.

[0072] FIG. 7 is a diagram showing a movement mechanism 50 for the friction roller 26. As shown in FIG. In this embodiment, a movement mechanism 50 is provided for the friction roller 26. A bearing member 51 that supports the shaft portion of the friction roller 26 is provided on the shaft portion of the friction roller 26. The bearing member 51 is supported by a support portion 52 fixed to a frame (not shown) so as to be movable in a predetermined direction S3. The support portion 52 has a return spring 53. The return spring 53 supports one end of the bearing member 51 and urges it in a predetermined direction. In this embodiment, the return spring 53 urges the bearing member 51 in a direction approaching the conveyor belt 15 in the S3 direction shown in FIG. 6.

[0073] A tension position control cam 54 abuts against the bearing member 51 on the side opposite the return spring 53. The tension position control cam 54 is rotatably supported on a frame (not shown). The tension position control cam 54 receives a driving force from a drive mechanism 60 in the control unit 100, and its rotational position is controlled. Depending on the rotational position of this tension position control cam 54, the bearing member 51 of the friction roller 26 presses against the return spring 53, compressing the return spring 53, and therefore the position of the friction roller 26 can be adjusted. The movement mechanism 50 of this embodiment is composed of a tension position control cam 54 , a bearing member 51 , a support portion 52 , and a return spring 53 .

[0074] In this way, the control unit 100 controls the rotation angle of the tension position control cam 54 in accordance with the conveying speed of the fabric M, thereby controlling the position of the friction roller 26, causing the friction roller 26 to approach or move away in the S3 direction. Thus, the tension applied to the fabric M in the conveying direction can be adjusted.

[0075] As described above, in the conveying device 2 of this embodiment, when the fabric M is conveyed at the second conveying speed V2, the control unit 100 controls the friction roller 26 so as to move the position of the friction roller 26 in a direction that applies tension to the fabric M upstream in the conveying direction. Even when the tension applied to the fabric M varies with a change in the conveying speed of the fabric M, the control unit 100 controls the position of the friction roller 26 to adjust the tension applied to the fabric M. Therefore, regardless of the conveying speed of the fabric M, when applying tension in the width direction, it is possible to suppress fluctuations in the tension applied to the fabric M in the conveying direction.

[0076] 4. Embodiment 4 A fourth embodiment to which the present disclosure is applied will be described. In this fourth embodiment, parts configured in the same manner as in the first embodiment will be given the same reference numerals and descriptions thereof will be omitted.

[0077] FIG. 8 is a diagram showing the operation of the guide portion 11. As shown in FIG. In the above-described third embodiment, the friction roller 26 can be moved in a direction away from the conveying member downstream of the friction roller 26, thereby applying tension to the fabric M. In the fourth embodiment, the guide unit 11 includes a movement mechanism 50. Therefore, as shown in FIG. 8 , tension is applied to the fabric M by moving the guide unit 11 in a direction away from the conveying member downstream of the guide unit 11, for example, in the S4 direction. That is, in this embodiment, by moving the guide unit 11 in the S4 direction away from the conveyor belt 15, the amount of tension applied to the fabric M in the conveying direction is increased. Furthermore, by moving the guide unit 11 in a direction approaching the conveyor belt 15, the amount of tension applied to the fabric M is reduced.

[0078] As described above, in the conveying device 2 of this embodiment, when the fabric M is conveyed at the second conveying speed V2, the control unit 100 controls the position of the guide unit 11 so as to move the position of the guide unit 11 in a direction that applies tension to the fabric M upstream in the conveying direction. Even when the tension applied to the fabric M varies with a change in the conveying speed of the fabric M, the control unit 100 adjusts the tension applied to the fabric M by controlling the position of the guide unit 11. Therefore, regardless of the conveying speed of the fabric M, when applying tension in the width direction, it is possible to suppress fluctuations in the tension applied to the fabric M in the conveying direction.

[0079] 5. Other Embodiments The above-described embodiments merely show one mode in which the present disclosure is applied, and any modifications and applications are possible without departing from the spirit of the present disclosure.

[0080] In the above-described first to fourth embodiments, the slats 13 are formed from a material such as rubber that generates friction when it comes into contact with the fabric M. However, the configuration of the slats 13 is not limited to this. For example, the slats 13 may be formed by attaching a member that generates friction when it comes into contact with the fabric M, such as fiber, to the surface of a flat plate made of metal or the like.

[0081] In the above-described first embodiment, a configuration was described in which the tension applied to the fabric M was adjusted by controlling the rotation of the friction roller 26. In the third embodiment, a configuration was described in which the tension applied to the fabric M was adjusted by controlling the position of the friction roller 26. In the second embodiment, a configuration was described in which the tension applied to the fabric M was adjusted by controlling the rotation of the guide unit 11. In the fourth embodiment, a configuration was described in which the tension applied to the fabric M was adjusted by controlling the position of the guide unit 11. These may be provided on both the friction roller 26 and the guide portion 11. That is, for example, both the friction roller 26 and the guide portion 11 may be configured to be movable.

[0082] 6. Summary of the Disclosure A summary of this disclosure is provided below.

[0083] (Appendix 1) A conveying device comprising: a payout section that pays out a fabric wound in a roll; a conveying belt that conveys the fabric paid out from the payout section downstream in a conveying direction; a first tensioning section that is provided between the payout section and the conveying belt and applies tension to the fabric in the conveying direction; a second tensioning section that is provided between the payout section and the conveying belt and applies tension to the fabric in the width direction; and a control section, wherein the control section controls the first tensioning section so that the magnitude of the tension applied to the fabric is constant when the fabric is conveyed at a predetermined first conveying speed and when the fabric is conveyed at a second conveying speed that is slower than the first conveying speed. Generally, the tension applied to the fabric in the feed direction fluctuates as the feed speed of the fabric changes. However, with the above configuration, the control unit controls the first tension applying unit, thereby suppressing fluctuations in the tension applied to the fabric in the feed direction regardless of the feed speed of the fabric. Therefore, when applying tension in the width direction by the second tension applying unit, an appropriate amount of tension can also be applied in the feed direction. This makes it possible to suppress slack in the fabric, thereby suppressing wrinkles and lifting of the fabric.

[0084] (Appendix 2) The conveying device described in Appendix 1, wherein the control unit controls the first tension applying unit to rotate the fabric in a direction that conveys the fabric upstream in the conveying direction when the fabric is conveyed at the second conveying speed. Even if the tension applied to the fabric fluctuates due to changes in the fabric conveyance speed, the control unit adjusts the tension applied to the fabric by controlling the rotation of the first tension applying unit. Therefore, regardless of the fabric conveyance speed, fluctuations in the tension applied to the fabric in the conveyance direction can be suppressed when applying tension in the width direction.

[0085] (Appendix 3) The conveying device described in Appendix 1, wherein the control unit controls the first tension applying unit to move the position of the first tension applying unit in a direction that applies tension to the fabric upstream in the conveying direction when the fabric is conveyed at the second conveying speed. Even if the tension applied to the fabric fluctuates with changes in the fabric conveyance speed, the control unit adjusts the tension applied to the fabric by controlling the position of the first tension applying unit. Therefore, regardless of the fabric conveyance speed, fluctuations in the tension applied to the fabric in the conveyance direction can be suppressed when applying tension in the width direction.

[0086] (Appendix 4) The control unit alternately performs a conveying operation control for conveying a predetermined amount of the fabric on the conveying belt and a stopping operation control for stopping the conveying of the fabric, and the control unit controls the first tension applying unit so that the magnitude of tension applied to the fabric is constant while the conveying operation control and while the stopping operation control are being executed. Even when the conveyance of the fabric is stopped, the desired tension can be applied to the fabric. Therefore, regardless of the conveyance speed of the fabric, when applying tension in the width direction, fluctuations in the tension applied to the fabric in the conveyance direction can be suppressed.

[0087] (Supplementary Note 5) The conveying device described in Supplementary Note 1, wherein the conveying speed within a conveying cycle when the conveying belt makes one rotation transitions through an acceleration region where the conveying speed of the fabric increases over time, a constant speed region which is a region following the acceleration region and where the conveying speed of the fabric is constant, and a deceleration region which is a region following the constant speed region and where the conveying speed of the fabric decreases over time, and the control unit controls the first tension applying unit to gradually decrease the amount of tension applied to the fabric by the first tension applying unit in the acceleration region and gradually increase the amount of tension applied to the fabric by the first tension applying unit in the deceleration region. As the conveying speed of the fabric slows, the first tension applying section increases the tension applied to the fabric, so that fluctuations in the tension applied to the fabric in the conveying direction can be suppressed regardless of the conveying speed of the fabric.

[0088] (Appendix 6) A recording device comprising: a payout section that pays out a fabric wound in a roll; a conveying belt that conveys the fabric paid out from the payout section downstream in a conveying direction; a first tension applying section that is provided between the payout section and the conveying belt and applies tension to the fabric in the conveying direction; a second tension applying section that is provided between the payout section and the conveying belt and applies tension to the fabric in the width direction; a recording section that records on the fabric conveyed by the conveying belt; and a control section, wherein the control section controls the first tension applying section so that the magnitude of the tension applied to the fabric is constant when the fabric is conveyed at a predetermined first conveying speed and when the fabric is conveyed at a second conveying speed that is slower than the first conveying speed. Generally, the tension applied to the fabric in the feed direction fluctuates as the feed speed of the fabric changes. However, with the above configuration, the control unit controls the first tension applying unit, thereby suppressing fluctuations in the tension applied to the fabric in the feed direction regardless of the feed speed of the fabric. Therefore, when applying tension in the width direction by the second tension applying unit, an appropriate amount of tension can also be applied in the feed direction. This makes it possible to suppress slack in the fabric, thereby suppressing wrinkles and lifting of the fabric.

[0089] (Appendix 7) A conveying method for a conveying device including a payout section that pays out a roll of fabric, a conveying belt that conveys the fabric paid out from the payout section downstream in the conveying direction, a first tensioning section that is provided between the payout section and the conveying belt and applies tension to the fabric in the conveying direction, and a second tensioning section that is provided between the payout section and the conveying belt and applies tension to the fabric in the width direction, the method comprising causing the first tensioning section to apply tension to the fabric so that the magnitude of the tension applied to the fabric is constant when the fabric is conveyed at a predetermined first conveying speed and when the fabric is conveyed at a second conveying speed that is slower than the first conveying speed. Generally, the tension applied to the fabric in the conveying direction fluctuates as the conveying speed of the fabric changes, but with the above configuration, fluctuations in the tension applied to the fabric in the conveying direction can be suppressed even at a second conveying speed that is slower than the first conveying speed. Therefore, when applying tension in the width direction, appropriate tension can also be applied in the conveying direction. This makes it possible to suppress slack in the fabric, thereby suppressing the occurrence of wrinkles and lifting in the fabric. [Explanation of symbols]

[0090] 1...recording device, 2...conveying device, 10...feeding section, 11...guide section, 12...slide bar, 13...slat plate, 15...conveying belt, 24...roller group, 25...driven roller, 26...friction roller, 100...control section, M...fabric.

Claims

1. a feeding section that feeds out the fabric wound in a roll; a conveyor belt that conveys the fabric fed from the feeding section downstream in a conveying direction; a first tension applying unit provided between the unwinding unit and the conveyor belt, the first tension applying unit applying tension to the fabric in the conveyance direction; a second tension applying unit provided between the unwinding unit and the conveyor belt and configured to apply tension in the width direction to the fabric; a control unit, the control unit controls the first tension applying unit so that the magnitude of tension applied to the fabric is constant when the fabric is conveyed at a predetermined first conveying speed and when the fabric is conveyed at a second conveying speed slower than the first conveying speed. Conveying device.

2. the control unit controls the first tension applying unit to rotate the fabric in a direction to feed the fabric upstream in the feed direction when the fabric is fed at the second feed speed. The conveying device according to claim 1 .

3. the control unit controls the first tension applying unit to move a position of the first tension applying unit in a direction to apply tension to the fabric upstream in the feed direction when the fabric is fed at the second feed speed. The conveying device according to claim 1 .

4. the control unit alternately controls the conveying belt to carry out a conveying operation to convey a predetermined amount of the fabric and to stop the conveying of the fabric, the control unit controls the first tension applying unit so that the magnitude of the tension applied to the fabric is constant during execution of the conveying operation control and during execution of the stopping operation control. The conveying device according to claim 1 .

5. The conveying speed within a conveying cycle when the conveying belt makes one rotation is: an acceleration region in which the conveying speed of the fabric increases over time; a constant speed region following the acceleration region, in which the conveying speed of the fabric is constant; a deceleration region which is a region following the constant speed region and in which the conveying speed of the fabric decreases over time; the control unit controls the first tension applying unit so that the amount of tension applied to the fabric by the first tension applying unit gradually decreases in the acceleration region and gradually increases in the deceleration region. The conveying device according to claim 1 .

6. a feeding section that feeds out the fabric wound in a roll; a conveyor belt that conveys the fabric fed from the feeding section downstream in a conveying direction; a first tension applying unit provided between the unwinding unit and the conveyor belt, the first tension applying unit applying tension to the fabric in the conveyance direction; a second tension applying unit provided between the unwinding unit and the conveyor belt and configured to apply tension in the width direction to the fabric; a recording unit that records on the fabric transported by the transport belt; a control unit, the control unit controls the first tension applying unit so that the magnitude of tension applied to the fabric is constant when the fabric is conveyed at a predetermined first conveying speed and when the fabric is conveyed at a second conveying speed slower than the first conveying speed. Recording device.

7. a feeding section that feeds out the fabric wound in a roll; a conveyor belt that conveys the fabric fed from the feeding section downstream in a conveying direction; a first tension applying unit provided between the unwinding unit and the conveyor belt, the first tension applying unit applying tension to the fabric in the conveyance direction; a second tension applying unit provided between the unwinding unit and the conveyor belt and configured to apply tension in the width direction to the fabric; For a conveying device comprising: the first tension applying unit applies tension to the fabric so that the magnitude of the tension applied to the fabric is constant when the fabric is conveyed at a predetermined first conveying speed and when the fabric is conveyed at a second conveying speed slower than the first conveying speed; Transportation method.

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