Recording apparatus and medium conveying apparatus

Abstract

The present application provides a recording device and a medium conveying device capable of appropriately maintaining the tension of a jointless tape even when a structural component of the device changes over time. The recording device is provided with a conveying roller, a recording section, a motor, a first pulley, a second pulley, a jointless tape, a tension applying component, a swing component, a first force applying component, a stopper, and a second force applying component. The stopper has a first restriction section and a second restriction section. The second force applying component applies force to the stopper in such a manner that the stopper can be displaced from a state in which the restricted section of the swing component is restricted by the first restriction section to a state in which the stopper is restricted by the second restriction section by passing over a difference in height.

Description

Technical Field

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

[0002] Various media transport devices have been used in recording devices and the like. Among them, there are media transport devices that have a seamless belt wound around multiple pulleys. For example, Patent Document 1 discloses a recording device having a seamless belt wound around a first pulley, a second pulley, and a drive pulley. In detail, the recording device of Patent Document 1 includes a tension applying roller that applies tension to the seamless belt, a retainer member that supports the tension applying roller and changes the tension by oscillating around a pivot point, a force applying unit that applies force to the retainer member in the direction of increasing tension, and a stop member that restricts the oscillation of the retainer member in the direction of decreasing tension.

[0003] In structures with a seamless belt wound around multiple pulleys, the seamless belt may elongate, the pulleys may wear, or the positions of the pulleys may change due to time-related variations in the device. Consequently, the tension of the seamless belt may change as the structural components of the device change over time. When the tension of the seamless belt changes, slippage or tooth skipping may occur. However, in existing media conveying devices with a seamless belt wound around multiple pulleys, maintaining the appropriate tension of the seamless belt is difficult. Furthermore, in the recording device of Patent Document 1, the tension of the seamless belt can be appropriately maintained under normal conditions. However, since the recording device of Patent Document 1 has a structure in which the retainer component is in contact with the stop component and the stop component is threaded onto the frame, it is sometimes difficult to maintain the appropriate tension of the seamless belt over time.

[0004] Patent Document 1: Japanese Patent Application Publication No. 2013-6665 Summary of the Invention A recording device, characterized in that it comprises: a conveying roller that applies a conveying force to a medium; a recording unit located downstream of the conveying roller in the conveying direction of the medium and performing recording on the medium conveyed by the conveying roller; a motor that generates power to drive the conveying roller; a first pulley that transmits power from the motor shaft of the motor; a second pulley that can rotate together with the conveying roller; a seamless belt wound around the first pulley and the second pulley; a tension applying member that presses the seamless belt in a tension applying direction; a swinging member configured to swing about a swinging axis, and provided with the tension applying member, and capable of changing the degree of pressing of the tension applying member on the seamless belt by swinging; a first force applying member that allows the tension applying member to apply force to the swinging member on the seamless belt in a first direction corresponding to the tension applying direction; and a stop member having a limiting portion and located on the conveying roller. The limiting part restricts the swinging member from swinging in the tension-reducing direction; the second force-applying part applies force to the stop member toward the swinging member, the swinging member having a limiting part that abuts against the limiting part, the stop member being configured to be displaceable, and having a first limiting part and a second limiting part as the limiting part, the first limiting part restricting the swinging member from swinging in the tension-reducing direction by abutting against the limiting part, the second limiting part being adjacent to the first limiting part via a height difference, and restricting the swinging member from swinging in the tension-reducing direction at a position where the swinging member is offset in the tension-applying direction compared to the position restricted by the first limiting part, the second force-applying part applying force to the stop member in a manner that allows it to displace from the state where the limiting part is restricted by the first limiting part across the height difference to the state where it is restricted by the second limiting part.

[0005] A media conveying device, characterized in that it comprises: a conveying roller that applies a conveying force to a medium; a motor that generates power to drive the conveying roller; a first pulley that transmits power from the motor shaft of the motor; a second pulley that can rotate together with the conveying roller; a seamless belt wound around the first pulley and the second pulley; a tension applying member that presses the seamless belt in a tension applying direction; a swinging member configured to swing about a swinging axis, and provided with the tension applying member, and capable of changing the degree of pressing of the tension applying member on the seamless belt by swinging; a first force applying member that allows the tension applying member to apply force to the seamless belt on the swinging member in a first direction corresponding to the tension applying direction; and a stop member having a limiting portion, and at the limiting portion, directing the swinging member in a tension reducing direction that reduces tension. The swinging motion is restricted; a second force-applying component applies force to the stop member toward the swinging member, the swinging member having a restricted portion that abuts against the limiting portion, the stop member being configured to be displaceable, and having a first limiting portion and a second limiting portion as the limiting portion, the first limiting portion restricting the swinging member from swinging in the direction of tension reduction by abutting against the restricted portion, the second limiting portion being adjacent to the first limiting portion via a height difference, and restricting the swinging member from swinging in the direction of tension reduction at a position where the swinging member is offset in the direction of tension application compared to the position where it is restricted by the first limiting portion, the second force-applying component applying force to the stop member in a manner that allows it to displace from the state where the restricted portion is restricted by the first limiting portion to the state where it is restricted by the second limiting portion. Attached Figure Description

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

[0007] Figure 2 To indicate Figure 1 A perspective view of the power transmission section of the recording device, showing the state in which the carriage is not in contact with the actuating section.

[0008] Figure 3 To indicate Figure 1 A perspective view of the power transmission section of the recording device, showing the state of the carriage and the actuating section in contact.

[0009] Figure 4 To indicate from and Figure 2 When observing from different angles Figure 1A perspective view of the power transmission section of the recording device, showing the state in which the carriage is not in contact with the actuating section.

[0010] Figure 5 To indicate from and Figure 3 When observing from different angles Figure 1 A perspective view of the power transmission section of the recording device, showing the state of the carriage and the actuating section in contact.

[0011] Figure 6 To indicate Figure 1 The diagram shows a side view of the power transmission section of the recording device, indicating that the carriage is not in contact with the actuating section.

[0012] Figure 7 To indicate Figure 1 The diagram shows a side view of the power transmission section of the recording device, indicating that the carriage is not in contact with the actuating section.

[0013] Figure 8 To indicate Figure 1 A schematic side view of the power transmission section of the recording device, and a diagram showing the state in which the restricted section is restricted by the first restricted section.

[0014] Figure 9 To indicate Figure 1 A schematic side view of the power transmission section of the recording device, and a diagram showing the state in which the restricted section is restricted by the second restricted section.

[0015] Figure 10 To indicate Figure 1 An exploded perspective view of the power transmission section of the recording device.

[0016] Figure 11 To indicate from and Figure 10 When observing from different angles Figure 1 An exploded perspective view of the power transmission section of the recording device.

[0017] Figure 12 To indicate Figure 1 An exploded perspective view of the swinging component and tension application component of the power transmission section of the recording device.

[0018] Figure 13 To indicate Figure 1 A schematic side view of the periphery of the toothed protrusion of the stop member of the power transmission part of the recording device.

[0019] Figure 14 This is a schematic side view showing the power transmission section of the recording device in Embodiment 2. Detailed Implementation

[0020] The present invention will now be described schematically.

[0021] To solve the above-mentioned problems, the recording device according to the first aspect of the present invention is characterized by comprising: a conveying roller that applies a conveying force to a medium; a recording unit located downstream of the conveying roller in the conveying direction of the medium and performing recording on the medium conveyed by the conveying roller; a motor that generates power to drive the conveying roller; a first pulley through which the motor shaft of the motor transmits power; a second pulley that can rotate together with the conveying roller; a seamless belt wound around the first pulley and the second pulley; a tension applying member that presses the seamless belt in a tension applying direction that applies tension to the seamless belt; a swinging member configured to swing about a swinging axis, and provided with the tension applying member, and capable of changing the degree of pressing of the tension applying member on the seamless belt by swinging; a first force applying member that allows the tension applying member to apply force to the swinging member on the seamless belt in a first direction corresponding to the tension applying direction; and a stop member. The device comprises a limiting portion that restricts the swinging member from swinging in a tension-reducing direction; a second force-applying member that applies force to the stop member toward the swinging member; the swinging member having a limiting portion that abuts against the limiting portion; the stop member being configured to be displaceable; and having a first limiting portion and a second limiting portion as the limiting portion; the first limiting portion restricts the swinging member from swinging in the tension-reducing direction by abutting against the limiting portion; the second limiting portion being adjacent to the first limiting portion via a height difference and restricting the swinging member from swinging in the tension-reducing direction at a position where the swinging member is offset in the tension-applying direction compared to the position where it is restricted by the first limiting portion; and the second force-applying member applying force to the stop member in a manner that allows it to displace from a state where the limiting portion is restricted by the first limiting portion to a state where it is restricted by the second limiting portion.

[0022] According to this method, a stop member is provided, which is configured to be displaceable and has a limiting portion, at which the swinging member is limited to swinging in the tension reduction direction, which is opposite to the tension application direction. Here, the stop member is configured to be displaceable. As the limiting portion, the stop member has a first limiting portion and a second limiting portion. The first limiting portion limits the swinging member to swing in the tension reduction direction by abutting against the limited portion. The second limiting portion is adjacent to the first limiting portion via a height difference. The second limiting portion limits the swinging member to swing in the tension reduction direction at a position where the swinging member is offset in the tension application direction compared to the position where it is limited by the first limiting portion. Moreover, a second force-applying member applies force to the stop member in a manner that allows it to move across the height difference from the state where the limited portion is limited by the first limiting portion to the state where it is limited by the second limiting portion. Thus, the recording device of this method has a stop member capable of displacement. According to this method, even if the structural components of the device such as the seamless belt, the first pulley, and the second pulley change over time, the stop can be displaced to an appropriate position to properly maintain the tension of the seamless belt.

[0023] The recording device according to the second aspect of the present invention is a type subordinate to the first aspect, characterized in that it comprises: a carriage that mounts the recording unit and is capable of reciprocating in a reciprocating movement direction intersecting the transport direction; and a release mechanism that releases the engagement between the restricted part and the restricting part by the movement of the carriage.

[0024] According to this method, a release mechanism is provided that releases the engagement between the restricted part and the limiting part by moving the carriage. With this structure, the stop member can be moved to the appropriate position with a simple structure without adding new structural components.

[0025] The recording device according to the third aspect of the present invention is a type subordinate to the second aspect, characterized in that the release mechanism includes an actuating part that moves in the direction of separating the stop member from the swing member by the movement of the slide.

[0026] According to this method, the release mechanism includes an actuating part that moves the stop member in a direction separating it from the swinging member by the movement of the carriage. With this structure, the stop member can be displaced to the appropriate position with a particularly simple configuration.

[0027] The recording device according to the fourth aspect of the present invention is any one of the first to third aspects, characterized in that the tension applying member is composed of a roller, the oscillating member has a holding part, and the holding part holds the roller in a rotatable manner.

[0028] According to this method, the tension applying component is composed of a roller, and the oscillating component has a retaining part that holds the roller in a rotatable manner. With such a structure, the rotational movement of the seamless belt can be smoothly implemented.

[0029] The recording device according to the fifth aspect of the present invention is a type belonging to any one of the first to fourth aspects, characterized in that it comprises: a frame that houses the recording section; a discharge roller located downstream of the recording section in the conveying direction and discharging the medium conveyed by the conveying roller to the outside of the frame; and a third pulley that can rotate together with the discharge roller, wherein the seamless belt is wound around the first pulley, the second pulley, and the third pulley.

[0030] According to this method, the seamless belt is wound around a first pulley that transmits power from the motor shaft, a second pulley that rotates together with the conveyor roller, and a third pulley that rotates together with the discharge roller. This structure simplifies and miniaturizes the device.

[0031] The medium conveying device according to the sixth aspect of the present invention is characterized by comprising: a conveying roller that applies a conveying force to the medium; a motor that generates power to drive the conveying roller; a first pulley that transmits power from the motor shaft of the motor; a second pulley that can rotate together with the conveying roller; a seamless belt wound around the first pulley and the second pulley; a tension applying member that presses the seamless belt in a tension applying direction; a swinging member configured to swing about a swinging axis, and provided with the tension applying member, and capable of changing the degree of pressing of the tension applying member on the seamless belt by swinging; a first force applying member that allows the tension applying member to apply force to the seamless belt in a first direction corresponding to the tension applying direction; and a stop member having a limiting portion, and at the limiting portion, restricting the swinging member towards a tension-reducing direction. The force-reducing member restricts the swinging motion in the direction of tension reduction; a second force-applying member applies force to the stop member toward the swinging member, the swinging member having a restricted portion that abuts against the limiting portion, the stop member being configured to be displaceable, and having a first limiting portion and a second limiting portion as the limiting portion, the first limiting portion restricting the swinging motion of the swinging member in the direction of tension reduction by abutting against the restricted portion, the second limiting portion being adjacent to the first limiting portion via a height difference, and restricting the swinging motion of the swinging member in the direction of tension reduction at a position where the swinging member is offset in the direction of tension application compared to the position where it is restricted by the first limiting portion, the second force-applying member applying force to the stop member in a manner that allows it to displace from the state where the restricted portion is restricted by the first limiting portion to the state where it is restricted by the second limiting portion.

[0032] According to this method, a stop member is provided, which has a limiting portion and restricts the swinging member from swinging in the tension reduction direction, which is opposite to the tension application direction, at the limiting portion. Here, the stop member is configured to be displaceable. As the limiting portion, the stop member has a first limiting portion and a second limiting portion. The first limiting portion restricts the swinging member from swinging in the tension reduction direction by abutting against the limited portion. The second limiting portion is adjacent to the first limiting portion via a height difference. The second limiting portion restricts the swinging member from swinging in the tension reduction direction at a position where the swinging member is offset in the tension application direction compared to the position where it is restricted by the first limiting portion. Moreover, a second force-applying member applies force to the stop member in a manner that allows it to displace from the state where the limited portion is restricted by the first limiting portion to the state where it is restricted by the second limiting portion. Thus, the media conveying device of this method includes a stop member capable of displacement. According to this method, even if the structural components of the device such as the seamless belt, the first pulley, and the second pulley change over time, the stop can be displaced to an appropriate position to properly maintain the tension of the seamless belt.

[0033] Example 1 Hereinafter, based on Embodiment 1A, which is an example of the medium transport apparatus and recording apparatus 1 of the present invention, Figures 1 to 13 Let's explain in detail. In the following description, as shown in the accompanying drawings, the three mutually orthogonal axes are designated as the X-axis, Y-axis, and Z-axis. The Z-axis direction corresponds to the vertical direction, i.e., the direction in which gravity acts. The X-axis and Y-axis directions correspond to the horizontal direction. In the accompanying drawings, the arrows marking the three axes (X, Y, Z) indicate the positive direction of each direction. For example, the X-axis direction corresponds to the reciprocating movement direction B of the carriage 3, the +X direction corresponds to the side where the power transmission unit 100 is located, and the -X direction corresponds to the initial position side of the carriage 3.

[0034] like Figure 1 As shown, the recording device 1A of this embodiment includes a frame 2. Furthermore, as... Figure 3 as well as Figure 5 As shown, a carriage 3 is provided inside the frame 2, which reciprocates in the reciprocating direction B along the X-axis. Furthermore, as... Figure 6 as well as Figure 7 As shown, a recording head 4 is mounted on the carriage 3 to spray ink onto the medium for recording.

[0035] In addition, such as Figure 2 As shown, the recording apparatus 1A of this embodiment includes, inside the housing 2, a conveying roller 7 for conveying the medium in the conveying direction A, and a discharge roller 8 for discharging the medium after recording. The conveying roller 7 is composed of a roller pair, which consists of... Figure 2 The drive roller 7a shown and Figure 4 The driven roller 7b shown is configured as such. The discharge roller 8 is also configured as a pair of rollers, which consists of... Figure 2 The recording device 1 of this embodiment is composed of a drive roller 8a and a driven roller (not shown). Furthermore, inside the frame 2, the recording device 1 includes a medium receiving tray (not shown) that receives the medium discharged by the discharge roller 8, and a motor 6 that serves as the power source for the conveying roller 7 and the discharge roller 8.

[0036] The power transmission from the motor 6 to the drive roller 7a of the conveying roller 7 and the drive roller 8a of the discharge roller 8 in the power transmission unit 100 is implemented in the following manner. For example... Figures 2 to 5 As shown, a first pulley 111 is mounted on the motor shaft 62 of the motor 6. A seamless belt 115 is mounted on the first pulley 111. In addition to being wound around the first pulley 111, the seamless belt 115 is also wound around a second pulley 112, a third pulley 113, and a pulley 114. The second pulley 112 is fixed to the drive roller 7a of the conveyor roller 7. The third pulley 113 is fixed to the drive roller 8a of the discharge roller 8. The pulley 114 is an example of a tension applying member that presses the seamless belt 115 in the direction in which tension is applied to it.

[0037] The first pulley 111 rotates due to the rotation of the motor shaft 62 of the motor 6, and the seamless belt 115 rotates accordingly. At this time, the drive roller 7a of the conveyor roller 7 and the drive roller 8a of the discharge roller 8 rotate in tandem with the rotation of the second pulley 112 and the third pulley 113. Furthermore, an encoder (not shown) is provided on the drive roller 7a of the conveyor roller 7 to measure the rotation of the conveyor roller 7. In addition, the power transmission unit 100 has multiple gears 110 forming a gear train with the second pulley 112 and the third pulley 113. By rotating the multiple gears 110, it can be configured, for example, to allow a media receiving tray (not shown) to extend outward from the frame 2.

[0038] Here, as Figures 2 to 11 As shown, pulley 114 is supported by a shaft on a swinging member 120 that can swing about the same shaft as the first pulley 111. Figure 8 as well as Figure 9 As shown, the oscillating component 120 is configured to oscillate in the tension application direction C1 and the tension reduction direction C2, with the position of the first pulley 111 as the oscillation axis 121. More specifically, as... Figure 11 as well as Figure 12 As shown, the swing member 120 has a circular hole 125. The circular hole 125 is mounted on... Figure 10On the motor bearing 61 shown, etc. Thus, the swing member 120 is held in a manner that allows it to swing relative to the motor 6 and the frame 140 in the tension application direction C1 and the tension reduction direction C2, as described later. Furthermore, as... Figure 8 as well as Figure 9 As shown, the oscillating component 120 is forced in the first direction F1 by the spring force of the spring 142. Consequently, the pulley 114 applies tension to the seamless belt 115 in the tension application direction C1. The tension application direction C1 is the direction in which tension is applied to the seamless belt 115.

[0039] like Figure 8 as well as Figure 9 As shown, a protruding restricted portion 122 is formed on the swing member 120. A stop member 130 is provided at a position opposite to the restricted portion 122. The stop member 130 restricts the swing of the restricted portion 122 in the tension-reducing direction C2. The tension-reducing direction C2 is the direction in which the tension of the swing member 120 is reduced. Figures 2 to 7 As shown, spring 142 is mounted on spring mounting portion 141 of frame 140 and spring mounting portion 123 of swing member 120. In this embodiment, spring 142 is a tension spring.

[0040] like Figures 2 to 10 As shown, a plurality of toothed protrusions 135 are formed on the stop member 130. Figure 8 as well as Figure 9 As shown, the toothed protrusion 135 is composed of a plurality of planar limiting surfaces having a first limiting portion 131 and a second limiting portion 132, and a height difference 133 provided between the planar limiting portions. Alternatively, the stop member 130, as a limiting portion, has a first limiting portion 131 and a second limiting portion 132. The limiting portions restrict the swinging of the swinging member 120 in the tension reduction direction C2. The first limiting portion 131 restricts the swinging of the swinging member 120 in the tension reduction direction C2 by being abutted by the limited portion 122. The second limiting portion 132 is adjacent to the first limiting portion 131 via the height difference 133. The second limiting portion 132 restricts the swinging of the swinging member 120 in the tension reduction direction C2 at a position where the swinging member 120 is adjacent to the first limiting portion 131. Figure 8 The position restricted by the first restrictor 131 as shown is compared to the direction Figure 9 The tension applied in the direction C1 is offset from the position shown.

[0041] Furthermore, the number of limiting surfaces in the limiting portion is not particularly limited. Additionally, the positions of the first limiting portion 131 and the second limiting portion 132 among the toothed protrusions 135 are not particularly limited; adjacent limiting surfaces can all be considered as the first limiting portion 131 and the second limiting portion 132. Furthermore, although in this embodiment the first limiting portion 131 and the second limiting portion 132 are planar limiting surfaces, this structure is not limited; for example, they could also be concave curved surfaces. However, for ease of re-engaging the limited portion 122 with the limiting portion after release, as described later, a planar shape is preferred.

[0042] In addition, such as Figure 8 as well as Figure 9 As shown, the stop 130 has a rotation shaft 134. The recording device 1A has a spring 143. The spring 143 applies a force to the stop 130 in the direction F2. Therefore, the stop 130 is subjected to a force in the rotational direction C3 with respect to the rotation shaft 134. Figures 2 to 7 As shown, the spring 143 is mounted on the spring mounting portion 144 that abuts against the frame 140, and forms a structure that applies force to the abutment portion 136 of the stop member 130 in the direction F2.

[0043] Here, refer to Figure 13 The toothed protrusion 135 will be described in further detail. In the stop member 130 of this embodiment, the distance from the front end 131a of the first limiting portion 131 of the toothed protrusion 135 to the rotation axis 134 is called distance L1. In the stop member 130, the distance from the rear end 131b of the first limiting portion 131 of the toothed protrusion 135 to the rotation axis 134 is called distance L2. Here, distance L1 < distance L2. This means that when the limiting portion 122 initially abuts against the front end 131a, the abutment position changes from the front end 131a to the rear end 131b due to the extension of the seamless belt 115. In addition, although the seamless belt 115 in this embodiment is a toothed synchronous toothed belt, it is not limited to such a structure, and may also be a friction belt or the like without teeth.

[0044] When the seamless belt 115 extends further by a predetermined length from the state where the restricted portion 122 abuts against the rear end 131b, the abutment position of the restricted portion 122 changes to the front end 132a in the second restricted portion 132. Here, the distance from the front end 132a of the toothed protrusion 135 to the rotation axis 134 becomes distance L3, but distance L2 << distance L3. The ratio of distance L3 to distance L2 is greater than the ratio of distance L2 to distance L1. Therefore, the so-called skipped teeth that occurs when the seamless belt 115 is in a state where the restricted portion 122 abuts against the rear end 131b is in a state where the extension of the restricted portion 115 is small, to the state where the restricted portion 122 abuts against the front end 132a is in a state where the extension of the restricted portion 115 is small, is suppressed. In addition, in Figure 13In the diagram, the sequence of lengths of distances L1, L2, and L3 is shown for ease of understanding. That is, in... Figure 13 The diagram shows an arc R1 centered on a rotation axis 134 corresponding to the distance L1. Figure 13 The diagram shows an arc R2 centered on a rotation axis 134 corresponding to the distance L2. Figure 13 The diagram shows an arc R3 centered on a rotation axis 134 corresponding to a distance L3.

[0045] Furthermore, in this embodiment, the distance L4 is set to be equal to... Figure 13 The distance L4 is longer than any of the distances L1, L2, and L3 shown. The distance L4 is the distance from the contact position between the limiting part and the limited part 122 to the swing axis 121 of the swing member 120. Furthermore, in the Y-axis direction, the contact position between the limiting part and the limited part 122 is configured to be closer to the swing axis 121 than the rotation axis 134, i.e., closer to the +Y direction side than the rotation axis 134. With this structure, interference between the height difference 133 of the stop member 130 and the limited part 122 is easily avoided. Therefore, it is easy to prevent the swing member 120 from rotating the stop member 130 to a greater extent than desired in the rotation direction C3. In other words, it is possible to suppress the swing member 120 from swinging in the tension reduction direction C2.

[0046] In summary, the recording apparatus 1A of this embodiment includes a conveying roller 7, a recording head 4 as a recording unit, and a motor 6. The conveying roller 7 applies a conveying force to the medium. The recording head 4 is located downstream of the conveying roller 7 in the medium conveying direction A. The recording head 4 performs recording on the medium conveyed by the conveying roller 7. The motor 6 generates power to drive the conveying roller 7. Furthermore, the recording apparatus 1A of this embodiment includes a first pulley 111, a second pulley 112, a seamless belt 115, and a pulley 114 as a tension applying member. The first pulley 111 receives power from the motor shaft 62 of the motor 6. The second pulley 112 can rotate together with the conveying roller 7. The seamless belt 115 is wound around the first pulley 111 and the second pulley 112. The pulley 114 applies tension to the seamless belt 115 by pressing it in the tension applying direction C1.

[0047] Furthermore, a swing member 120 is provided, which is configured to swing about a swing shaft 121 and is equipped with a pulley 114. By swinging, the pressure of the pulley 114 on the seamless belt 115 can be changed. Additionally, a spring 142 is provided as a first force-applying member. This spring 142 applies force to the swing member 120 in a first direction F1 corresponding to the tension application direction C1 on the seamless belt 115. Here, the first direction F1 is perpendicular to the direction of the line connecting the swing shaft 121 and the spring mounting portion 123. Furthermore, a stop member 130 is provided, which has a first limiting portion 131 and a second limiting portion 132, and at the limiting portion, restricts the swing member 120 from swinging in the tension reduction direction C2, which corresponds to the opposite direction of the first direction F1. In addition, a spring 143 is provided as a second force-applying component, which applies force to the stop member 130 toward the swing member 120 in the direction F2.

[0048] Furthermore, as described above, the swing member 120 has a restricted portion 122 that abuts against the restricted portion.

[0049] Furthermore, the stop member 130 is configured to rotate about the rotation axis 134, i.e., to be displaceable. Moreover, as a limiting part, the stop member 130 has a first limiting part 131 and a second limiting part 132. The first limiting part 131 restricts the swinging member 120 from swinging in the tension reduction direction C2 by abutting against the limited part 122. The second limiting part 132 is adjacent to the first limiting part 131 via a height difference 133. The second limiting part 132 restricts the swinging member 120 from swinging in the tension reduction direction C2 at a position where the swinging member 120 is offset in the tension application direction C1 compared to the position restricted by the first limiting part 131. Furthermore, the stop member 130, which is forceped in the direction F2 by the spring 143, can be displaced from a state where the limited part 122 is restricted to the first limiting part 131 to a state where the limited part 122 is restricted to the second limiting part 132. Furthermore, during the transition from a state where the restricted portion 122 is restricted by the first restricted portion 131 to a state where the restricted portion 122 is restricted by the second restricted portion 132, the restricted portion 122 will cross the height difference 133. Through the above-described structure, the recording apparatus 1A of this embodiment can appropriately maintain the tension of the seamless belt 115 even if the structural components of the device, such as the seamless belt 115, the first pulley 111, and the second pulley 112, undergo temporal changes.

[0050] In addition, such as Figures 2 to 7As shown, the recording device 1A of this embodiment includes a release mechanism 150 in the power transmission section 100 that can release the engagement between the restricted section 122 and the restricting section. Figure 3 , Figure 5 as well as Figure 7 This indicates that the restricted part 122 is engaged with the restricting part. Figure 2 , Figure 4 as well as Figure 6 The state is released when the limiting part 122 engages with the limiting part. The release mechanism 150 includes a carriage abutment part 151, a moving part 152, and a lever 153.

[0051] The carriage abutment portion 151 is pressed in the +X direction by the carriage 3, which moves in the +X direction, thereby becoming a structure capable of moving in the +X direction. Furthermore, the carriage abutment portion 151 is fan-shaped and mounted on the drive roller 7a. The carriage abutment portion 151 rotates by rotating the drive roller 7a, thereby being able to move to a position abutting against the carriage 3 and a position not abutting against the carriage 3. The moving portion 152 engages with the carriage abutment portion 151 in the reciprocating movement direction B, thereby becoming a structure capable of moving together with the carriage abutment portion 151 along the reciprocating movement direction B.

[0052] Rod 153 has a contact portion 153a. The contact portion 153a has an inclined surface that is tilted relative to the reciprocating movement direction B when viewed from the Z-axis direction. Rod 153 is capable of... Figure 2 , Figure 4 as well as Figure 6 The state is such that the contact part 153a comes into contact with the moving part 152 that moves in the +X direction and... Figure 11 The rotating shaft 153c shown is a structure that rotates in the reference direction C3. Furthermore, as... Figure 11 As shown, the rod 153 has an abutting portion 153b that abuts against the protrusion 130a of the stop member 130. By rotating the rod 153 in the rotation direction C3 with reference to the rotation axis 153c, the stop member 130 rotates in the opposite direction of rotation direction C3. By rotating the stop member 130 in the opposite direction of rotation direction C3, the stop member 130 is engaged with the limiting portion 122. Figure 2 , Figure 4 as well as Figure 6 The state begins, and like Figure 3 , Figure 5 as well as Figure 7 As shown, the engagement between the restricted part 122 and the restrictor is released.

[0053] Then, when the carriage 3 moves again in the direction corresponding to the -X direction, the restricted part 122 and the limiting part will re-engage. By re-engaging the restricted part 122 and the limiting part after release, even if the restricted part 122 and the limiting part are not engaged in the proper position, it is possible to engage the restricted part 122 and the limiting part in the proper position after re-engaging. In particular, when a strong impact is applied to the recording device 1A, or when the seamless tape 115, which is prone to loosening, is reversed, the restricted part 122 and the limiting part may sometimes engage in a state where they are offset from the proper position. In addition, reversing the seamless tape 115 refers to reversing the motor 6. However, in such cases, by releasing the restricted part 122 and the limiting part once and then re-engaging them, it is possible to engage the restricted part 122 and the limiting part in the proper position.

[0054] Thus, the recording device 1A of this embodiment includes a carriage 3 and a release mechanism 150. The carriage 3 mounts the recording head 4 and can reciprocate in a reciprocating movement direction B that intersects the transport direction A. The release mechanism 150 releases the engagement between the restricted part 122 and the restricting part by the reciprocating movement of the carriage 3.

[0055] The recording device 1A of this embodiment is configured in such a way that the stop 130 can be moved to the appropriate position with a simple structure without adding new structural components.

[0056] Alternatively, the release mechanism 150 could be represented by a lever 153 as an actuating element, which moves in the direction that causes the stop 130 to separate from the swing member 120 via the reciprocating movement of the carriage 3. Figure 2 , Figure 4 as well as Figure 6 The state of rising towards Figure 3 , Figure 5 as well as Figure 7 The state is shifted, thus as... Figure 3 , Figure 5 as well as Figure 7 As shown, the engagement between the restricted part 122 and the restrictor is released. By providing such a structure, the recording device 1A of this embodiment can displace the stop 130 to the appropriate position with a particularly simple structure.

[0057] Furthermore, in the recording device 1A of this embodiment, the lever 153 moves in the direction that separates the stop member 130 from the swing member 120 via the reciprocating movement of the slide 3 through the slide abutment portion 151 and the moving portion 152. However, the structure of the recording device 1A is not limited to such a structure. For example, it may be configured such that the lever 153 directly abuts against the slide 3 through the reciprocating movement of the slide 3, thereby moving in the direction that separates the stop member 130 from the swing member 120.

[0058] Here, as Figure 12 As shown, in the recording apparatus 1A of this embodiment, the tension applying member is a pulley 114 that serves as a roller. Furthermore, the oscillating member 120 has a holding portion 124 that holds the pulley 114 in a rotatable manner. Specifically, by embedding the protrusion 114a of the pulley 114 into the recess 124a of the holding portion 124, the holding portion 124 can hold the pulley 114 in a rotatable manner. By providing such a structure, the recording apparatus 1A of this embodiment can smoothly perform the rotational movement of the seamless belt 115. However, it is not limited to this structure; for example, the tension applying member may also be a cylindrical component integrally formed with the holder.

[0059] In addition, such as Figure 1 As shown, the recording apparatus 1A of this embodiment includes a frame 2 that houses structural components such as the recording head 4. Furthermore, as described above, the recording apparatus 1A includes a discharge roller 8 and a third pulley 113. The discharge roller 8 is located downstream of the recording head 4 in the conveying direction A. The discharge roller 8 discharges the medium conveyed by the conveying roller 7 to the outside of the frame 5. The third pulley 113 can rotate together with the discharge roller 8. Moreover, as... Figures 2 to 7 As shown, the seamless belt 115 is wound around the first pulley 111, the second pulley 112, and the third pulley 113. By providing such a structure, the recording device 1A of this embodiment can be simplified and miniaturized.

[0060] Example 2 Next, referring to the recording device 1B of Embodiment 2 Figure 14 Let me explain. Figure 14 For the recording device 1A corresponding to Embodiment 1 Figure 8 The image. In Figure 14 In this embodiment, structural components common to those in Embodiment 1 are represented using the same reference numerals, and detailed descriptions are omitted. Furthermore, except for the height difference 133, the recording device 1B of this embodiment is identical in structure to the recording device 1A of Embodiment 1. Therefore, except for the parts described below, the recording device 1B of this embodiment has the same features as the recording device 1A of Embodiment 1.

[0061] like Figure 14 As shown, the height difference 133 of the recording device 1A in this embodiment is shaped as an arc R4 with reference to the swing axis 121 of the swing member 120. By setting it in this way, unnecessary swaying of the stop member 130 is suppressed, thereby improving the durability of the stop member 130 and the swing member 120.

[0062] This invention is not limited to the embodiments described above, but can be implemented with various structures without departing from its spirit. Regarding the technical features in the embodiments corresponding to the technical features in the various embodiments described in the Summary of the Invention section, appropriate substitutions and combinations can be made to solve some or all of the above-described problems, or to achieve some or all of the above-described effects. Furthermore, any technical feature that is not described as an essential technical feature in this specification can be appropriately deleted.

[0063] Symbol Explanation 1…Recording device (media conveying device); 1A…Recording device; 1B…Recording device; 2…Frame; 3…Carriage; 4…Recording head (recording section); 6…Motor; 7…Conveyor roller; 7a…Drive roller; 7b…Driven roller; 8…Discharge roller; 8a…Drive roller; 61…Motor bearing; 62…Motor shaft; 100…Power transmission section; 110…Gear; 111…First pulley; 112…Second pulley; 113…Third pulley; 114…Pulley (tension application component); 114a…Protrusion; 115…Seamless belt; 120…Oscillating component; 121…Oscillating shaft; 122…Restricted part; 123…Spring mounting part; 124…Retaining part; 124a…Recess; 130…Stop; 130a…Protrusion Part; 131…First limiting part; 131a…Front end; 131b…Rear end; 132…Second limiting part; 132a…Front end; 133…Height difference; 134…Rotation shaft; 135…Toothed protrusion; 136…Abutting part; 140…Frame; 141…Spring mounting part; 142…Spring (first force-applying component); 143…Spring (second force-applying component); 144…Spring mounting part; 150…Release mechanism; 151…Slide abutting part; 152…Moving part; 153…Rod (Actuating part); 153a…Contact part; 153b…Abutting part; 153c…Rotation shaft; L1…Distance; L2…Distance; L3…Distance; L4…Distance; R1…Circular arc; R2…Circular arc; R3…Circular arc; R4…Circular arc.

Claims

1. A recording device, characterized in that, have: Conveyor rollers, which apply conveying force to the medium; A recording unit is located downstream of the conveying roller in the conveying direction of the medium, and performs recording on the medium being conveyed by the conveying roller; An electric motor that generates power to drive the conveyor rollers; The first pulley transmits power from the motor shaft of the motor; The second pulley is capable of rotating together with the conveying roller; A seamless belt is wound around the first pulley and the second pulley; A tension applying component presses the seamless belt in the tension applying direction that applies tension to the seamless belt; The swinging component is configured to swing about a swing axis and is provided with the tension applying component. By swinging, the pressure of the tension applying component on the seamless belt can be changed. A first force-applying component, which allows the tension-applying component to apply force to the swinging component in a first direction corresponding to the tension-applying direction on the seamless belt; A stop member having a limiting portion, which restricts the swinging member from swinging in a tension-reducing direction that reduces tension. The second force-applying component applies force to the stop member toward the swinging member. The swinging component has a restricted portion, which abuts against the restricting portion. The stop member is configured to allow for displacement, and it has a first limiting part and a second limiting part as the limiting part. The first limiting part restricts the swinging member from swinging in the direction of tension reduction by being abutted by the limited part. The second limiting part is adjacent to the first limiting part via a height difference, and restricts the swinging member from swinging in the direction of tension reduction at a position where the swinging member is offset in the direction of tension application compared to the position where it is restricted by the first limiting part. The second force-applying component applies force to the stop member in a manner that allows it to move from a state where the restricted portion is restricted by the first restricting portion to a state where it is restricted by the second restricting portion.

2. The recording device as claimed in claim 1, characterized in that, have: A carriage that mounts the recording unit and is capable of reciprocating in a reciprocating direction that intersects the conveying direction; A release mechanism that releases the engagement between the restricted part and the limiting part by moving the carriage.

3. The recording device as claimed in claim 2, characterized in that, The release mechanism includes an actuating part that moves in the direction that causes the stop to separate from the swing member by the movement of the slide.

4. The recording device as claimed in claim 3, characterized in that, The tension application component is composed of a roller. The oscillating component has a holding part that holds the roller in a rotatable manner.

5. The recording device as claimed in claim 4, characterized in that, have: The frame houses the recording section; A discharge roller, located downstream of the recording section in the conveying direction, discharges the medium conveyed by the conveying roller to the outside of the frame; The third pulley is capable of rotating together with the discharge roller. The seamless belt is wound around the first pulley, the second pulley, and the third pulley.

6. A medium conveying device, characterized in that, have: Conveyor rollers, which apply conveying force to the medium; An electric motor that generates power to drive the conveyor rollers; The first pulley transmits power from the motor shaft of the motor; The second pulley is capable of rotating together with the conveying roller; A seamless belt is wound around the first pulley and the second pulley; A tension applying component presses the seamless belt in the tension applying direction that applies tension to the seamless belt; The swinging component is configured to swing about a swing axis and is provided with the tension applying component. By swinging, the pressure of the tension applying component on the seamless belt can be changed. A first force-applying component, which allows the tension-applying component to apply force to the swinging component in a first direction corresponding to the tension-applying direction on the seamless belt; A stop member having a limiting portion, which restricts the swinging member from swinging in a tension-reducing direction that reduces tension. The second force-applying component applies force to the stop member toward the swinging member. The swinging component has a restricted portion, which abuts against the restricting portion. The stop member is configured to allow for displacement, and it has a first limiting part and a second limiting part as the limiting part. The first limiting part restricts the swinging member from swinging in the direction of tension reduction by being abutted by the limited part. The second limiting part is adjacent to the first limiting part via a height difference, and restricts the swinging member from swinging in the direction of tension reduction at a position where the swinging member is offset in the direction of tension application compared to the position where it is restricted by the first limiting part. The second force-applying component applies force to the stop member in a manner that allows it to move from a state where the restricted portion is restricted by the first restricting portion to a state where it is restricted by the second restricting portion.

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