Conveying device and recording device

Abstract

The present application provides a kind of to the abnormal sound generated when sliding friction occurs between tensioning rod (20) and medium (7) is inhibited conveying device and recording device.The conveying device (52) related to the present application has: unwinding part (2), which is rotatably retained to the reel body (R1) being wound with medium (7), and can unwind medium from the reel body;Conveying part (3), which intermittently conveys the medium unwound from the reel along the conveying direction;Tensioning rod (20), which is movably arranged between the unwinding part and the conveying part on the conveying path (18) of the medium being conveyed, and presses the medium to apply tensioning force (T1);Tensioning rod moving part (21), which moves the tensioning rod;Vibration part (53), which vibrates the tensioning rod.

Description

Technical Field

[0001] This invention relates to a conveying device and a recording device. Background Technology

[0002] As an example of prior art for such a device, the technology described in Patent Document 1 can be cited. Patent Document 1 contains the following disclosure.

[0003] The supply rod drive mechanism adjusts the tension force applied to the medium as the supply rod oscillates by adjusting the driving force applied to the supply rod support component.

[0004] In Patent Document 1, since abnormal noises sometimes occur due to friction with the medium when the supply rod component swings, there is room for improvement in this respect.

[0005] Patent Document 1: Japanese Patent Application Publication No. 2023-022374 Summary of the Invention

[0006] To address the aforementioned issues, the conveying device of the present invention comprises: an unwinding section that rotatably holds a roll containing a medium and unwinds the medium from the roll; a conveying section that intermittently conveys the medium unwound from the roll along a conveying direction; a tensioning rod that is movably disposed between the unwinding section and the conveying section along the conveying path of the medium and presses the medium to apply tension; a tensioning rod moving section that moves the tensioning rod; and a vibration section that vibrates the tensioning rod.

[0007] Furthermore, the recording apparatus according to the present invention is characterized by comprising: a recording unit that records a conveyed medium; and a conveying device located upstream of the recording unit in the conveying direction, which conveys the medium toward the recording unit, wherein the conveying device is a conveying device described in any one of the first to eighth embodiments described below. Attached Figure Description

[0008] Figure 1 This is a side view schematic diagram of the outline structure of a recording device having the conveying device of Embodiment 1.

[0009] Figure 2 This is a top view of the tensioning force application section in Embodiment 1.

[0010] Figure 3 This is an enlarged side view of the conveying device in embodiments 1, 2, and 3.

[0011] Figure 4 The diagram shows the structural block diagram of the control unit in embodiments 1, 2, and 3. Detailed Implementation

[0012] Hereinafter, the present invention will be described in summary. To address the aforementioned issues, the conveying device according to the first aspect of the present invention comprises: an unwinding section that rotatably holds a roll containing a medium and unwinds the medium from the roll; a conveying section that intermittently conveys the medium unwound from the roll along a conveying direction; a tensioning rod that is movably disposed between the unwinding section and the conveying section along the conveying path in which the medium is conveyed and presses the medium to apply tension; a tensioning rod moving section that moves the tensioning rod; and a vibration section that vibrates the tensioning rod.

[0013] When the medium is conveyed while the tensioning rod is in contact with the medium and a tensioning force is applied, abnormal sounds may sometimes be generated from the part where the tensioning rod slides and rubs against the medium.

[0014] According to this method, a tensioning rod and a tensioning rod moving part are included. The tensioning rod is movably disposed between the unwinding part and the conveying part along the conveying path of the medium being conveyed, and applies tension by pressing the medium. The tensioning rod moving part moves the tensioning rod. The conveying device also includes a vibrating part that vibrates the tensioning rod. Therefore, when the tensioning rod slides against the medium, the vibration of the tensioning rod by the vibrating part can suppress the generation of abnormal noise.

[0015] The conveying device according to the second aspect of the present invention is a subordinate aspect of the first aspect, characterized in that it includes a control unit that controls the operation of the unwinding unit, the conveying unit, the tension rod moving unit, and the vibration unit. The control unit causes the vibration unit to operate so that the tension rod vibrates based on vibration timing information that specifies the timing for vibrating the tension rod.

[0016] According to this method, the control unit is configured to drive the vibration unit based on vibration timing information that specifies the timing for vibrating the tension rod, thereby causing the tension rod to vibrate. Thus, the tension rod can be vibrated at an appropriate timing when abnormal sounds are generated, thereby suppressing the generation of abnormal sounds. Furthermore, the generation of abnormal sounds can be suppressed without causing the tension rod to vibrate unnecessarily.

[0017] The conveying device involved in the third aspect of the present invention is a subordinate aspect of the second aspect, characterized in that the vibration timing information is the position information of the tensioning rod in the direction of movement.

[0018] According to this method, the vibration timing information is the position information of the tensioning rod in the direction of movement. Therefore, based on the position information of the tensioning rod, it is possible to vibrate the tensioning rod at an appropriate timing to suppress the generation of abnormal sounds.

[0019] The conveying device involved in the fourth aspect of the present invention is a subordinate aspect of the third aspect, characterized in that the tensioning rod moving part includes a rotating part and a rotary encoder, and the position information is obtained by the rotary encoder.

[0020] According to this method, since the position information is obtained by the rotary encoder, the position information can be obtained with a simple structure.

[0021] The fifth aspect of the present invention relates to a conveying device that is subordinate to the second aspect, characterized in that the vibration timing information is the speed information of the moving tension rod.

[0022] According to this method, the vibration timing information is the speed information of the moving tension rod. Therefore, based on the speed information of the tension rod, the tension rod can be vibrated at an appropriate timing to suppress the generation of abnormal sounds.

[0023] The sixth aspect of the present invention relates to a conveying device that is subordinate to the fifth aspect, characterized in that the tensioning rod moving part includes a rotating part and a rotary encoder, and the speed information is obtained by the rotary encoder.

[0024] According to this method, since the speed information is obtained by the rotary encoder, the speed information can be obtained with a simple structure.

[0025] The seventh aspect of the present invention relates to a conveying device that is subordinate to the second aspect. The control unit is configured to perform the following actions: after the conveying unit stops, the tension rod located at the upper limit position is moved downward by the tension rod moving part; and after the conveying unit resumes conveying the medium, the tension rod located at the lower limit position is moved upward by the tension rod moving part. The vibration timing information is a first predetermined time and a second predetermined time. (1) The first predetermined time is a predetermined time after the conveying unit stops and before the tension rod is about to reach the lower limit position. (2) The second predetermined time is a predetermined time after the conveying unit resumes conveying the medium and after the tension rod has just started moving upward from the lower limit position.

[0026] According to this method, the vibration timing information is a first predetermined time and a second predetermined time. (1) The first predetermined time is a predetermined time after the conveying unit stops and before the tensioning rod is about to reach the lower limit position. (2) The second predetermined time is a predetermined time after the conveying unit restarts the conveying of the medium and after the tensioning rod has just started to move upward from the lower limit position PL. Thus, without using the rotary encoder, the tensioning rod can be vibrated at appropriate timing to suppress the generation of abnormal sounds.

[0027] The conveying device involved in the eighth aspect of the present invention is a type subordinate to the second aspect, characterized in that a vibration transmission suppression component is provided between the conveying section and the tensioning rod.

[0028] In addition, this method can also belong to any one of the methods from the third to the seventh method.

[0029] According to this method, since a vibration transmission suppression component is provided between the conveying section and the tensioning rod, the transmission of vibration to the conveying section can be suppressed, thereby maintaining the conveying accuracy of the conveying section.

[0030] The recording apparatus according to the ninth aspect of the present invention is characterized by comprising: a recording unit that records a conveyed medium; and a conveying device located upstream of the recording unit in the conveying direction and conveying the medium toward the recording unit, wherein the conveying device is a conveying device described in any one of the first to eighth aspects.

[0031] According to this method, as a recording device, it can achieve the same effect as the conveying device described in any one of the first to eighth methods.

[0032] Implementation The following is based on Figures 1 to 4 The conveying device and the recording device equipped with the conveying device according to the embodiments of the present invention will be described in detail here. Here, the case where the recording device is an inkjet printer will be described.

[0033] In the following description, as shown in the figures, the three mutually orthogonal axes are designated as the X-axis, Y-axis, and Z-axis. The arrows on the three axes (X, Y, Z) indicate the positive (+) direction, and their opposite direction is the negative (-) direction. The Z-axis corresponds to the vertical direction, i.e., the direction in which gravity exerts its force; the +Z direction represents vertically upward, and the -Z direction represents vertically downward. The X-axis and Y-axis correspond to the horizontal direction. The +X direction represents the rightward direction of the recording device, and the -X direction represents the leftward direction. The +Y direction represents the forward direction of the recording device, and the -Y direction represents the rearward direction.

[0034] Overall overview of the recording device like Figure 1 As shown, the recording device 1 of this embodiment includes an unwinding section 2, a conveying section 3, a recording section 4, a winding section 5, and a control section 15.

[0035] The unwinding section 2 has a support shaft 6, and the elongated medium 7 is placed on the support shaft 6 in the form of a roll body R1. The unwinding section 2 unwinds the medium 7 in the conveying direction F by rotating the roll body R1 by rotating the support shaft 6. The support shaft 6 is rotated by being subjected to a rotational force by the rotating mechanism 8.

[0036] The rotating mechanism 8 is driven by power transmitted from a motor (not shown) via a control signal from the control unit 15.

[0037] The conveying unit 3 intermittently conveys the medium 7 along the conveying direction F. Here, the conveying unit 3 uses the pair of drive roller 9 and driven roller 10 to clamp and convey the medium 7. The size L of the medium 7 during each feeding of the medium 7 by the conveying unit 3 in the intermittent conveying is the size that the recording unit 4 can record in each reciprocating movement described later.

[0038] The drive roller 9 is driven by a motor (not shown) that is powered by a control signal from the control unit 15. That is, the conveying unit 3 intermittently conveys the medium 7.

[0039] The recording unit 4 ejects ink from the recording head 12 onto the unwound medium 7 within the recording execution area 11 to perform recording. The recording head 12 is mounted on a carriage 13. The carriage 13 reciprocates in the width direction (Y-axis direction) of the medium 7, which intersects the transport direction F. When the transport unit 3 stops and the medium 7 also stops, the recording unit 4 ejects ink while performing this reciprocating movement to perform recording.

[0040] The recording unit 4 executes the recording action achieved by the reciprocating movement and ink ejection via the control signal from the control unit 15. In the recording execution area 10, the medium 7 is supported by the medium support unit 14.

[0041] The winding section 5 has a support shaft 16. The top end of the long strip of medium 7 is fixed to the support shaft 16. The winding section 5 winds the medium 7 by rotating the support shaft 16, thereby forming a roll body R2. The support shaft 16 is rotated by a rotational force applied by a rotation mechanism 17.

[0042] The rotating mechanism 17 is driven by power transmitted from a motor (not shown) via a control signal from the control unit 15.

[0043] Tensioning section on the unwinding side Furthermore, a tension application section 19 is provided on the conveying path 18 between the unwinding section 2 and the conveying section 3. The tension application section 19 includes a tension rod 20 and a tension rod moving section 21, wherein the tension rod 20 applies a tension force T1 by contacting and pressing the medium 7. Figure 1 , Figure 3 The tensioning rod moving part 21 causes the tensioning rod 20 to move.

[0044] like Figure 2 As shown, tensioning force application parts 19 are respectively disposed at both ends 22 and 23 along the length of tensioning rod 20. Tensioning rod 20 is fixed to rod support shaft 24.

[0045] The tensioning rod moving part 21 includes a rotating part 25 and a rotating shaft 26 that rotates integrally with the rotating part 25. One end 28 of the arm 27 is fixed to the rotating shaft 26. The top end 29 of the arm 27 is a free end and is fixed to both ends 22 and 23 of the tensioning rod 20. That is, by rotating the rotating part 25, the arm 27 swings about the side of one end 28 as a pivot point, causing the top end 29 to swing, and the tensioning rod 20 is moved by this swing.

[0046] The tension rod moving part 21 is driven by the control signal from the control unit 15, which transmits power from the motor (not shown).

[0047] The medium 7, unwound from the unwinding section 2, is conveyed in the conveying direction F with an excess length 30 formed between the roll body R1 and the conveying section 3. The tensioning rod 20 contacts the medium 7 in the excess length 30 and applies a tension force T1, thereby tensioning the medium 7 in the excess length 30. Specifically, the medium 7 between the guide roller 31 forming the conveying path 18 and the guide surface 32 located immediately in front of the conveying section 3 is arranged in a generally U-shaped posture by the tensioning rod 20.

[0048] like Figure 3 As shown, the medium 7 is intermittently conveyed by the conveying unit 3, so that the tensioning rod 20 moves back and forth between the lower limit PL and the upper limit PT while applying a tension force T1 to the medium 7 that is unwound from the unwinding unit 2.

[0049] When the conveying unit 3 is stopped and recording is being performed by the recording unit 4, the tension rod 20 moves downward, increasing the length of the medium 7 located on the excess length section 30. At the end of the recording performed by the recording unit 4, the tension rod 20 is at its lower limit PL. At this time, the excess length section 30 is at its longest.

[0050] When recording by recording unit 4 ends and conveying of medium 7 by conveying unit 3 resumes, tension rod 20 begins to move upward. Conveying unit 3 stops after feeding medium 7 for each feed increment L. When conveying unit 3 stops, tension rod 20 is at its upper limit position PT. At this time, the length of excess length 30 is at its shortest. Next, tension rod 20 begins to move downward toward lower limit position PL and reaches lower limit position PL. Afterward, tension rod 20 moves back and forth between lower limit position PL and upper limit position PT in sync with the intermittent conveying of conveying unit 3, applying a tension force T1 to medium 7.

[0051] The tension rod 20 moves back and forth between the lower limit PL and the upper limit PT in a state where a tension force T1 is applied to the medium 7, in sync with the intermittent conveying of the conveying unit 3. This action is performed under the control of the control unit 15.

[0052] Tensioning section on the winding side A tensioning force application unit 40 is also provided on the conveying path 18 between the conveying unit 3 and the winding unit 5. The tensioning force application unit 40 includes a tensioning rod 41 and a tensioning rod moving part 42, wherein the tensioning rod 41 applies tension force T2 by contacting and pressing with the medium 7. Figure 1 The tension moving part 42 causes the tension rod 41 to move.

[0053] The tensioning force application part 40 and the tensioning force application part 19 are similarly arranged at both ends of the tensioning rod 41 along its length, and the tensioning rod 20 is fixed to the rod support shaft (not shown in the figure).

[0054] Like the tensioning rod moving part 21, the tensioning rod moving part 42 also includes a rotating part 43 and a rotating shaft 44 that rotates integrally with the rotating part 43. One end 46 of the arm 45 is fixed to the rotating shaft 44. The top end 47 of the arm 45 is a free end and is fixed to both ends of the tensioning rod 41. That is, by rotating the rotating part 43, the arm 45 swings about the side of one end 46 as a pivot point, causing the top end 47 to swing, and the tensioning rod 41 is moved by this swing.

[0055] The tension rod moving part 42 is driven by power transmitted from a motor (not shown) via a control signal from the control unit 15.

[0056] The medium 7, which is recorded by the recording unit 4, is conveyed in the conveying direction F in the same manner as the tensioning unit 19, with an excess length 48 formed between the roll body R2 and the conveying unit 3. The tensioning rod 41 contacts the medium 7 in the excess length 48 and applies a tension force T2, thereby making the medium 7 in the excess length 48 tensioned. Specifically, the medium 7 between the guide frame 49 forming the conveying path 18 and the guide roller 50 located immediately in front of the take-up unit 5 is made into a generally U-shaped posture by the tensioning rod 41.

[0057] The medium 7 is intermittently conveyed by the conveying unit 3, so that the tensioning rod 41 moves back and forth between the lower limit and the upper limit (not shown) while a tension force T2 is applied to the medium 7 conveyed from the conveying unit 3.

[0058] When the conveying unit 3 is stopped and recording is being performed by the recording unit 4, the tensioning rod 41 moves upward, shortening the length of the medium 7 located on the excess length section 48. At the end of the recording performed by the recording unit 4, the tensioning rod 20 is at its upper limit position PT. At this time, the length of the excess length section 48 is at its shortest.

[0059] When recording by recording unit 4 ends and conveying of medium 7 by conveying unit 3 resumes, tension rod 20 begins to move downward. Conveying unit 3 stops after feeding medium 7 for each feed increment L. When conveying unit 3 stops, tension rod 20 is at the lower limit PL. At this time, the remaining length 48 is at its longest. Next, tension rod 41 begins to move towards the upper limit PT and reaches the upper limit PT. Afterward, tension rod 41 moves back and forth between the lower limit PL and the upper limit PT in sync with the intermittent conveying of conveying unit 3, applying a tension force T2 to medium 7.

[0060] The tensioning rod 20 moves back and forth between the lower limit PL and the upper limit PT in a state where a tension force T2 is applied to the medium 7, in sync with the intermittent conveying of the conveying unit 3. This action is performed under the control of the control unit 15.

[0061] Control unit 15 Figure 4 It is configured as shown in the block diagram. That is, the control unit 15 controls the various actions of the unwinding unit 2, the conveying unit 3, the recording unit 4, the winding unit 5, and the tension rod moving units 21 and 42.

[0062] Specifically, control unit 15 receives and records data 51 ( Figure 4 When the recording unit 3 performs the recording operation described above, the control unit 15 performs the unwinding operation of the medium 7 performed by the unwinding unit 2, the conveying operation of the medium 7 performed by the conveying unit 3, the winding operation of the medium 7 performed by the winding unit 5, and the tensioning force application operation performed by the tensioning rod moving units 21 and 42 on the medium 7.

[0063] Implementation Method 1 Next, based on Figure 3 and Figure 4 The following describes Embodiment 1 of the conveying device 52 according to the present invention. The conveying device 52 of this embodiment is a structural element of the recording device 1.

[0064] The conveying device 52 of this embodiment includes an unwinding section 2 and a conveying section 3. The unwinding section 2 holds a roll R1 with the medium 7 wound on it in a rotatable manner and can unwind the medium 7 from the roll R1. The conveying section intermittently conveys the medium 7 unwound from the roll R1 along the conveying direction F. The conveying device 52 also includes a tension rod 20, a tension rod moving section 21, and a vibration section 53. The tension rod 20 is movably disposed between the unwinding section 2 and the conveying section 3 along the conveying path 18 in which the medium 7 is conveyed. The tension rod moving section 21 moves the tension rod 20, and the vibration section 53 vibrates the tension rod 20.

[0065] The structure of the unwinding section 2, the conveying section 3, the tension rod 20, and the tension rod moving section 21, other than the vibration section 53, has already been described in the description of the recording device 1, so the description here is omitted.

[0066] In this embodiment, the vibration part 53 is configured to also serve as the rotating part 25 of the tension rod moving part 21. That is, the vibration part 53 is configured to perform its function as a vibration part 53 by causing the rotating part 25 to perform the following movements.

[0067] The rotating shaft 26 of the rotating part 25 repeatedly rotates forward and backward with a short cycle. As a result, the top end 29 of the arm 27 moves up and down back and forth with a short cycle. As a result, the tension rod 20 also moves up and down back and forth with a short cycle. In this way, by the short-cycle up and down back and forth movement of the tension rod 20, the rotating part 25 performs the function of the vibrating part 53.

[0068] like Figure 4 As shown, the vibration unit 53 is driven by the control signal from the control unit 15.

[0069] In this embodiment, the control unit 15 is configured to drive the vibration unit 53 based on vibration timing information 54 that specifies the timing for the tension rod 20 to vibrate, thereby causing the tension rod 20 to vibrate.

[0070] When the tension lever 20 moves between the lower limit PL and the upper limit PT, it does not consistently produce abnormal sounds throughout its entire range; rather, it frequently produces abnormal sounds within a specific range between the lower limit PL and the upper limit PT. Specifically, when the tension lever 20 starts moving downwards from the upper limit PT, abnormal sounds are more likely to occur at position P1, a certain range just before reaching the lower limit PL, and at position P2, a certain range immediately after starting moving upwards from the lower limit PL. Therefore, it is sufficient to drive the vibrating part 53 to vibrate only at positions P1 and P2 where abnormal sounds occur. Although vibrating the vibrating part 53 only needs to occur for the initial period within positions P1 and P2, it can also be done over the entire range.

[0071] In this embodiment, the vibration timing information 54 is the position information of the tension rod 20 that is moving. That is, the vibration timing information 54 is configured to use positions P1 and P2 within the movement range of the tension rod 20. The control unit 15 drives the vibration unit 53 when the tension rod 20 is at positions P1 and P2.

[0072] Acquisition of location information like Figure 2 As shown, in this embodiment, the tensioning rod moving part 21 includes a rotating part 25 and a rotary encoder 55.

[0073] The rotary encoder 55 has a disk 57 with a regular plurality of slits (not shown) and rotates. The rotary encoder 55 uses an optical sensor (omitted, showing a group of light-emitting and light-receiving elements) to sense and count the slits of the rotating disk 57. The rotary encoder 55 can determine the amount of rotation of the disk 57 based on the number of slits counted by the optical sensor.

[0074] In this embodiment, since the disk 57 is fixed to the rotating shaft 26, the rotation of the disk 57 becomes the rotation of the rotating shaft 26. The tension rod 20, through the rotation of the rotating shaft 26, causes the arm 27 to swing, thereby reciprocating between the lower limit PL and the upper limit PT. Therefore, based on the rotation direction and amount of the disk 57, position information of the tension rod 20 within its range of motion can be obtained. That is, the rotary encoder 55 can determine whether the tension rod 20 is at position P1 and position P2.

[0075] When the control unit 15 receives timing information 54 via the rotary encoder 55 indicating that the tension rod 20 is at positions P1 and P2 where abnormal sounds are generated, it drives the vibration unit 53 to make the tension rod 20 vibrate.

[0076] like Figure 3 As shown, in this embodiment, a vibration transmission suppression member 56 is provided between the conveying section 3 and the tensioning rod 20. The vibration transmission suppression member 56 has the function of suppressing the transmission of vibration to the conveying section 3 when the tensioning rod 20 vibrates. Therefore, the part of the vibration transmission suppression member 56 that comes into contact with the medium 7 is made of materials such as vibration-absorbing rubber, silicone, or polyurethane, or materials that attenuate vibration.

[0077] Here, the vibration transmission suppression component 56 employs a driven roller that clamps the medium 7 between itself and the guide surface 32. The vibration transmission suppression component 56 is only required to perform the aforementioned function and is not limited to the driven roller.

[0078] Explanation of the function of Implementation Method 1 Next, use Figure 3 The function of Implementation Method 1 will be explained.

[0079] Synchronized with the intermittent conveying of the conveying unit 3, the tensioning rod 20 repeatedly moves up and down within the range of movement between the upper limit PT and the lower limit PL. When the tensioning rod 20 moves downward and passes position P1, it sends vibration timing information 54 to the control unit 15, indicating the timing of passing position P1. Furthermore, when the tensioning rod 20 begins to move upward and passes position P2, it sends vibration timing information 54 to the control unit 15, indicating the timing of passing position P2. In other words, the control unit receives vibration timing information 54 that indicates the timing at which the tensioning rod 20 vibrates.

[0080] When the control unit 15 receives the vibration timing information 54, it drives the vibration unit 53 to make the tension rod 20 vibrate.

[0081] Explanation of the effects of Implementation Method 1 (1) In this embodiment, a tensioning rod 20 and a tensioning rod moving part 21 are provided. The tensioning rod 20 is movably disposed between the unwinding part 2 and the conveying part 3 on the conveying path 18 in which the medium 7 is conveyed, and applies a tension force T1 by pressing the medium 7. The tensioning rod moving part 21 moves the tensioning rod 20. A vibration part 53 is also provided, which vibrates the tensioning rod 20. Thus, when the tensioning rod 20 slides and rubs against the medium 7, the vibration part 53 is used to vibrate the tensioning rod 20, thereby suppressing the generation of abnormal noise.

[0082] (2) Furthermore, in this embodiment, the control unit 15 is configured to drive the vibration unit 53 based on vibration timing information 54 that specifies the timing for the tension rod 20 to vibrate, thereby causing the tension rod 20 to vibrate. Thus, the tension rod 20 can be vibrated at an appropriate timing when an abnormal sound is generated, thereby suppressing the generation of the abnormal sound. Furthermore, the generation of the abnormal sound can be suppressed without causing the tension rod 20 to vibrate unnecessarily.

[0083] (3) Furthermore, in this embodiment, the vibration timing information 54 is the position information P1, P2 of the tension rod 20 in the direction of movement. Therefore, based on the position information P1, P2 of the tension rod 20, the tension rod 20 can be vibrated at an appropriate timing to suppress the generation of the abnormal sound.

[0084] (4) Furthermore, in this embodiment, since the position information P1 and P2 are obtained by the rotary encoder 55, the position information P1 and P2 can be obtained with a simple structure.

[0085] (5) Furthermore, in this embodiment, since a vibration transmission suppression component 56 is provided between the conveying section 3 and the tension rod 20, the transmission of vibration to the conveying section 3 can be suppressed, thereby maintaining the conveying accuracy of the conveying section 3.

[0086] Implementation Method 2 Next, based on Figure 2 and Figure 3 The conveying device 52 according to Embodiment 2 will now be described. The same symbols are used for parts that are the same as in Embodiment 1, and descriptions of their structure and corresponding effects are omitted.

[0087] The tension lever 20 has an acceleration region, a constant speed region, and a deceleration region depending on its speed when moving between the lower limit PL and the upper limit PT. Specifically, when the tension lever 20 starts moving downward from the upper limit PT, it goes through an acceleration region where the speed gradually increases, followed by a constant speed region, and then a deceleration region where the speed gradually decreases. The same pattern occurs when it starts moving upward from the lower limit PL.

[0088] As already described, abnormal sounds occur at positions P1 when the tension rod 20 moves downward and at position P2 when it moves upward. The inventors of this application have confirmed that the tension rod 20 passes through position P1 in a decelerating state and through position P2 in an accelerating state. Therefore, it can be said that the velocity V1 of the tension rod 20 when it begins to pass through position P1 in a decelerating state can be used as vibration timing information 54. Similarly, it can be said that the velocity V2 of the tension rod 20 when it begins to pass through position P2 in an accelerating state can be used as vibration timing information 54.

[0089] That is, in this embodiment, the vibration timing information 54 is the velocity V1 and velocity V2, which are the velocity information of the moving tension rod 20.

[0090] Acquisition of speed information The rotary encoder 55 can determine the rotational speed of the disk 57 based on the number of slits counted per unit time using the optical sensor. The rotational speed of the disk 57 is correlated with the moving speed of the tension rod 20.

[0091] In this embodiment, since the disk 57 is fixed to the rotating shaft 26, the rotational speed of the disk 57 becomes the rotational speed of the rotating shaft 26. The tension rod 20, through the rotation of the rotating shaft 26, causes the arm 27 to swing, thereby moving back and forth between the lower limit PL and the upper limit PT. Therefore, based on the rotational direction and speed of the disk 57, the speed information of the tension rod 20 moving up and down can be obtained. That is, the rotary encoder 55 can determine whether the tension rod 20 has reached speeds V1 and V2.

[0092] When the control unit 15 receives timing information 54 via the rotary encoder 55 indicating the speeds V1 and V2 that would cause abnormal sounds in the tension rod 20, it drives the vibration unit 53 to cause the tension rod 20 to vibrate.

[0093] Explanation of the effects of Implementation Method 2 (1) In this embodiment, the vibration timing information 54 is the speed information V1 and V2 of the moving tension rod 20. Therefore, based on the speed information V1 and V2 of the tension rod 20, the tension rod 20 can be vibrated at an appropriate timing to suppress the generation of the abnormal sound.

[0094] (2) Furthermore, in this embodiment, since the speed information V1 and V2 are obtained by the rotary encoder 55, the speed information V1 and V2 can be obtained with a simple structure.

[0095] Implementation Method 3 Next, based on Figure 2 and Figure 3 The conveying device 52 according to Embodiment 3 will now be described. The same symbols are used for parts that are the same as in Embodiment 1 or Embodiment 2, and descriptions of their structure and corresponding effects are omitted.

[0096] In this embodiment, the control unit 15 is configured to perform the following actions: after the conveying unit 3 stops, the tension rod 20 located at the upper limit position PT is moved downward by the tension rod moving part 21; and after the conveying unit 3 resumes conveying the medium 7, the tension rod 20 located at the lower limit position PL is moved upward by the tension rod moving part 21.

[0097] Therefore, it can be said that by measuring the time T from when the tension rod 20 starts to move downward after the conveying section 3 stops moving until it reaches position P1, it is possible to determine whether the tension rod 20 is at position P1 and position P2 without using the rotary encoder 55.

[0098] Furthermore, in this embodiment, the control unit 15 is configured to cause the tension rod 20 to vibrate during the following first predetermined time S1 and second predetermined time S2.

[0099] (1) The first predetermined time S1 is the predetermined time after the conveying unit 3 stops and before the tensioning rod 20 is about to reach the lower limit PL. The first predetermined time S1 is the length of time that the tensioning rod 20 is at position P1, which is determined based on the time T measured above.

[0100] (2) The second predetermined time S2 is the predetermined time after the conveying unit 3 resumes the conveying of the medium 7 and the tension rod 20 has just started to move upward from the lower limit PL. The second predetermined time S2 is the length of time that the tension rod 20 is at position P2, which is determined based on the time T measured above.

[0101] That is, in this embodiment, the vibration timing information 54 is a first predetermined time S1 and a second predetermined time S2.

[0102] Explanation of the effects of implementation method 3 (1) In this embodiment, the vibration timing information 54 is a first predetermined time S1 and a second predetermined time S2. (1) The first predetermined time S1 is a predetermined time after the conveying unit 3 stops and before the tension rod 20 is about to reach the lower limit PL. (2) The second predetermined time S2 is a predetermined time after the conveying unit 3 restarts the conveying of the medium 7 and the tension rod 20 just starts to move upward from the lower limit PL. Thus, without using the rotary encoder 55, the tension rod 20 is vibrated at appropriate timing, thereby suppressing the generation of the abnormal sound.

[0103] Other implementation methods Although the conveying device 52 and the recording device 1 of the present invention are based on the structure of the embodiments described above, it is of course possible to make changes or omissions to the partial structure without departing from the spirit of the present invention.

[0104] (1) Although the structures for obtaining position information P1, P2 or velocity information V1, V2 as vibration timing information 54 by means of rotary encoder 55 have been described in the above embodiments, they are not limited thereto. For example, the above information can also be obtained by calculating the movement of tension rod 20 based on dynamic images captured by a camera. Alternatively, position information P1, P2 can be obtained by means of position sensors such as limit sensors.

[0105] (2) Although the structure in the above embodiments is described in which the rotating part 25 of the tension rod moving part 21 also serves as the vibration part 53, it is not limited thereto. For example, the tension rod 20 can also be vibrated by using a vibration device such as a vibrator.

[0106] (3) Although the structure of the conveying device 52 as a structural element of the recording device 1 has been described in the above embodiments, it is not limited to the recording device 1. For example, it can be any other device such as a transfer device, as long as it has a tension rod 20 that can move.

[0107] (4) Alternatively, the tensioning rod 20 can be configured to move along a guide groove (the strip shown in the figure is omitted). That is, the tensioning rod 20 can be configured to engage with the guide groove in a slidable manner, thereby guiding the movement of the tensioning rod 20.

[0108] (5) Vibration timing information 54 is preferably configured in such a way that the user can change and adjust it according to the actual state of abnormal sound.

[0109] (6) Alternatively, the vibration part 53 may vibrate throughout the entire range of the deceleration and acceleration regions, or vibrate continuously or intermittently throughout the entire range of movement, as the tension rod 20 moves. In this case, the intensity of the vibration may be set to be variable.

[0110] Symbol Explanation 1…Recording device; 2…Unwinding section; 3…Conveying section; 4…Recording section; 5…Rewinding section; 6…Support shaft; 7…Media; 8…Rotating mechanism; 9…Drive roller; 10…Driven roller; 11…Recording execution area; 12…Recording head; 13…Carriage; 14…Media support section; 15…Control section; 16…Support shaft; 17…Rotating mechanism; 18…Conveying path; 19…Tension application section; 20…Tensioning rod; 21…Tensioning rod moving section; 22, 23…End points; 24…Rod support shaft; 25…Rotating section; 26…Rotating shaft; 27…Arm section; 28…One end; 29…Top end; 30…Excess length; 31…Guide roller; 32…Guide Surface; 40…Tensioning force application part; 41…Tensioning rod; 42…Tensioning rod moving part; 43…Rotating part; 44…Rotating shaft; 45…Arm part; 46…One end part; 47…Top end part; 48…Excess length part; 49…Guide frame; 50…Guide roller; 51…Data recording; 52…Conveying device; 53…Vibration part; 54…Vibration timing information; 55…Rotary encoder; 56…Vibration transmission suppression component; 57…Disc; F…Conveying direction; P1…Position; P2…Position; PL…Lower limit; PT…Upper limit; R1…Roll body; R2…Roll body; S1…First predetermined time; S2…Second predetermined time; V1…Speed; V2…Speed.

Claims

1. A conveying device comprising: The unwinding section holds the roll containing the medium in a rotatable manner and is capable of unwinding the medium from the roll. The conveying unit intermittently conveys the medium unwound from the drum along the conveying direction; A tensioning rod is movably disposed between the unwinding section and the conveying section along the conveying path in which the medium is conveyed, and presses the medium to apply tension. The tensioning rod moving part causes the tensioning rod to move; The vibrating part causes the tension rod to vibrate.

2. The conveying device as described in claim 1, characterized in that, It includes a control unit that controls the actions of the unwinding unit, the conveying unit, the tension rod moving unit, and the vibration unit. The control unit activates the vibration unit to cause the tension rod to vibrate based on vibration timing information that specifies the timing for vibrating the tension rod.

3. The conveying device as described in claim 2, characterized in that, The vibration timing information is the position information of the tensioning rod in the direction of movement.

4. The conveying device as described in claim 3, characterized in that, The tensioning rod moving part includes a rotating part and a rotary encoder. The position information is obtained by the rotary encoder.

5. The conveying device as described in claim 2, characterized in that, The vibration timing information is the speed information of the moving tension rod.

6. The conveying device as described in claim 5, characterized in that, The tensioning rod moving part includes a rotating part and a rotary encoder. The speed information is obtained by the rotary encoder.

7. The conveying device as described in claim 2, characterized in that, The control unit is configured to perform the following actions: after the conveying unit stops, the tension rod, which is located at the upper limit position, is moved downward by the tension rod moving part; and after the conveying unit resumes conveying the medium, the tension rod, which is located at the lower limit position, is moved upward by the tension rod moving part. The vibration timing information is a first predetermined time and a second predetermined time. (1) The first predetermined time is a predetermined time after the conveying part stops and before the tensioning rod is about to reach the lower limit. (2) The second predetermined time is a predetermined time after the conveying part restarts the conveying of the medium and after the tensioning rod has just started to move upward from the lower limit.

8. The conveying device as described in claim 2, characterized in that, A vibration transmission suppression component is provided between the conveying section and the tensioning rod.

9. A recording device, characterized in that, have: The recording department records the information of the transported medium. A conveying device is located upstream of the recording unit in the conveying direction, and conveys the medium toward the recording unit. The conveying device is the conveying device according to any one of claims 1 to 8.

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