Mobile device and recording device

Abstract

To provide a mobile device and a recording device capable of suppressing reduction in detection accuracy of an origin position of a movable body.SOLUTION: A mobile device 30 includes: a detection unit that detects an origin position PH0 of a recording unit 20 being an example of a movable body; and a guide unit 36 that guides a guided unit 27 of the recording unit 20. The guided unit 27 includes: a guide roller 28; and a support shaft 29 having a smaller outer diameter than that of the guide roller 28. The guide unit 36 includes: a first guide rail 37 that guides the guide roller 28 along a movement direction B; a second guide rail 38, 39 that is connected to the first guide rail 37, and guides the guide roller 28 along a crossing direction crossing with the movement direction B; and a regulation unit 40 that regulates displacement of the support shaft 29 in the crossing direction and does not regulate the guide roller 28. The detection unit detects, as the origin position PH0, a position of the recording unit 20 when at least a part of the guide roller 28 is located at a connection part P1 and the support shaft 29 is regulated by the regulation unit 40.SELECTED DRAWING: Figure 17

Description

[Technical field]

[0001] The present invention relates to a moving device and a recording device having a guide section that guides a moving body along a moving direction and a detection section that detects an origin position of the moving body. [Background technology]

[0002] For example, Patent Document 1 discloses a recording device including a transport unit that transports a medium and a recording unit that records liquid such as ink on the medium. This recording device includes a moving device that moves the recording unit (an example of a moving body) along a moving direction. The moving device has a guiding unit that movably guides the recording unit along a moving path, and a guided unit that is provided on the recording unit and guided by the guiding unit. The guiding unit is, for example, a guide rail, and the guided unit is a guide roller that is provided on the recording unit. The guide roller has an axis attached to the side of the recording unit and a roller supported by the axis.

[0003] The recording unit is provided detachably with respect to the recording device for maintenance or replacement in the event of a breakdown. Therefore, the guiding unit has a first guide rail (an example of a first guiding unit) that guides the roller (first guided unit) along the movement direction, and a second guide rail (an example of a second guiding unit) that is connected to the first guide rail and guides the roller along a cross direction that crosses the movement direction.

[0004] When the recording unit is in the replacement position on the movement path, the roller is located at the connection between the first guide rail and the second guide rail, so that when the recording unit is in the replacement position, the roller is guided by the second guide rail, making it possible to attach and detach the recording unit from the recording device.

[0005] In addition, a sensor (an example of a detection unit) is provided to detect a home position (origin position) when the recording unit is in a retracted position on the moving path. The retracted position is also a replacement position. In the replacement position, the recording unit can be guided to a second guide rail for replacement. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2023-81157 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, if an external force is applied while the recording unit is in the retracted position (origin position), there is a risk that the first guided portion (e.g., a roller) will be guided by the second guiding portion (e.g., a second guide rail). In that case, the recording unit will be displaced in the intersecting direction from the retracted position, or the attitude of the recording unit will be tilted from the normal attitude. As a result, there is a risk that the detection accuracy of the detection portion that detects the recording unit at the origin position on the moving path will decrease. That is, the above problem occurs in a configuration in which the first guided portion when the moving body such as the recording unit is in the origin position can be displaced in the intersecting direction, which is the guiding direction by the second guiding portion. Therefore, even with such a configuration, there is a demand for suppressing the decrease in the detection accuracy of detecting the moving body such as the recording unit at the origin position. [Means for solving the problem]

[0008] A moving device that solves the above problem includes a detection unit that detects an origin position of a moving body that can move along a moving direction, and a guiding unit that guides a guided part of the moving body, wherein the guided part has a first guided part and a second guided part whose length along the moving direction is shorter than that of the first guided part, and the guiding unit has a first guiding part that guides the first guided part along the moving direction, a second guiding part connected to the first guiding part and guiding the first guided part along a cross direction that crosses the moving direction, and a regulating part that regulates displacement of the second guided part in the cross direction and does not regulate the first guided part, and the detection unit detects the position of the moving body when at least a part of the first guided part is located at the connection part of the first guiding part and the second guiding part and the second guided part is regulated by the regulating part as the origin position.

[0009] The recording device that solves the above problem includes the moving device and a recording unit that is the moving body and performs recording on a medium. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view showing a recording apparatus according to an embodiment. [Diagram 2] FIG. 2 is a schematic front sectional view showing the recording apparatus. [Diagram 3] FIG. 3 is a schematic front view showing the recording unit and the first maintenance unit when they are in the recording position. [Figure 4] FIG. 4 is a schematic front view showing the state when the recording unit and the first maintenance unit are in a capping state. [Diagram 5] FIG. 5 is a schematic front view showing the recording unit at the origin position and the first maintenance unit at the cap position. [Figure 6] FIG. 6 is a perspective view showing the motion mechanism and the liquid supply mechanism. [Figure 7] FIG. 7 is a rear view showing the motion mechanism and the liquid supply mechanism when the printing unit is in the printing position. [Figure 8] FIG. 8 is a rear view showing the motion mechanism and the liquid supply mechanism when the recording unit is at the origin position. [Figure 9] FIG. 9 is a rear cross-sectional view showing the recording section and the detection section. [Figure 10] FIG. 10 is a rear cross-sectional view showing the detection unit. [Figure 11] FIG. 11 is a side view showing the detection unit. [Figure 12] FIG. 12 is a rear cross-sectional view showing the motion mechanism and the liquid supply mechanism. [Figure 13] FIG. 13 is a rear cross-sectional view showing the positional relationship between the guide rails and the guide rollers when the recording unit is at the origin position in the comparative example. [Figure 14] FIG. 14 is a schematic cross-sectional rear view showing the guide roller at the original position and the replacement position in the comparative example. [Figure 15] FIG. 15 is a schematic cross-sectional rear view showing a guide roller at an original position and a replacement position in a comparative example different from FIG. [Figure 16] FIG. 16 is a schematic rear view showing the detection unit. [Figure 17] FIG. 17 is a rear cross-sectional view showing the restricting portion and its periphery. [Figure 18] FIG. 18 is a schematic cross-sectional rear view showing the restricting portion and the guide roller. [Figure 19] FIG. 19 is a cross-sectional view showing the regulating portion and the guide roller when the recording portion is at the origin position, as viewed from the movement direction. [Figure 20] FIG. 20 is a schematic plan view showing the regulating portion and the guide roller when the recording portion is at the origin position. [Figure 21] FIG. 21 is a schematic rear view showing a part of the recording unit and the tube. [Figure 22] FIG. 22 is a schematic cross-sectional view showing a part of the recording head. [Figure 23] FIG. 23 is a rear cross-sectional view showing the regulating portion and the guide roller when the recording portion is in the replacement position. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, an embodiment of a recording device will be described with reference to the drawings. The recording device 10 shown in Fig. 1 is an inkjet printer that records images such as characters and photographs by ejecting ink, which is an example of a liquid, onto a medium such as paper or fabric.

[0012] <Recording device> 1, the recording device 10 includes a device main body 11. The device main body 11 is configured to record an image on a medium M. The device main body 11 will be described in detail later. The recording device 10 may be a multifunction device having not only a function of recording an image on a medium M but also other functions.

[0013] The recording device 10 may include a reading unit 12. The reading unit 12 is a scanner that reads an original document and outputs an image. The reading unit 12 has at least one of an automatic document feeding system that automatically reads set original documents one by one in order, and a flatbed system that reads an original document set on a document table. The reading unit 12 is mounted on the top of the device body 11. The reading unit 12 overlaps with the device body 11 when viewed from the vertical direction Z.

[0014] The recording device 10 includes an operation unit 13. The operation unit 13 is an interface that allows a user to operate the recording device 10. The operation unit 13 is, for example, a touch panel. The operation unit 13 may include buttons, levers, switches, and the like. The operation unit 13 is located in front of the device body 11 and the reading unit 12.

[0015] <Device body> The device main body 11 has a housing 11A. The housing 11A houses various components of the device main body 11. The housing 11A is rectangular. The housing 11A has a depth, width, and height. The depth direction of the housing 11A is the X direction, the width direction of the housing 11A is the Y direction, and the vertical direction opposite to the height of the housing 11A is the Z direction. For this reason, the X direction is also called the depth direction X, and the Z direction is also called the vertical direction Z. Note that the depth direction X is also called the width direction X because it is the same direction as the width direction that intersects with the transport direction in which the medium M is transported. In addition, the Y direction is the horizontal direction when viewed from the front by a user standing in a position to operate the recording device 10, and is also the width direction of the device main body 11 (housing 11A). The X direction, the Y direction, and the Z direction are perpendicular to each other.

[0016] The housing 11A has multiple surfaces. The housing 11A has a front surface 14, a rear surface 15, a first side surface 16, and a second side surface 17. The front surface 14 faces the direction opposite to the X direction. In one example, the front surface 14 faces the same direction as the operation unit 13. The front surface 14 is a surface facing a user who operates the recording device 10. The rear surface 15 is a surface opposite to the front surface 14. The first side surface 16 is a surface facing the -Y direction. The second side surface 17 is a surface facing the +Y direction.

[0017] A concave ejection space S1 is formed in the housing 11A. The ejection space S1 is a space into which the recorded medium M is ejected. The medium M ejected from the housing 11A is stacked in the ejection space S1. A user can access the ejection space S1 from a position facing the front surface 14. The housing 11A may have one or more covers.

[0018] 1, a stacking unit 19 on the bottom of which recorded media M are stacked is disposed within the discharge space S1 of the device body 11. The stacking unit 19 overlaps with the reading unit 12 when viewed from the vertical direction Z. The stacking unit 19 is located directly below the reading unit 12. The stacking unit 19 includes a discharge tray 19A that is detachable from the housing 11A.

[0019] The discharge tray 19A is attached to the housing 11A. The discharge tray 19A opens or closes the access opening 11B that opens at the top of the housing 11A by being attached to or detached from the housing 11A. When a user or an operator such as a serviceman removes the discharge tray 19A from the housing 11A, the access opening 11B is exposed. The discharge tray 19A may be configured to be removable by sliding in the ±Y direction relative to the housing 11A, for example. The access opening 11B is used when performing maintenance such as replacing parts inside the housing 11A. The discharge tray 19A is located above the recording unit 20 (see FIG. 2). In the recording device 10 of this embodiment, the recording unit 20 can be removed from the housing 11A for maintenance or replacement.

[0020] 1, the loading unit 19 has a discharge tray 19A. The discharge tray 19A is a portion that receives the medium M discharged to the discharge space S1. In one example, the discharge tray 19A is inclined downward in the Y direction. The discharge space S1 is located above the discharge tray 19A. Therefore, by arranging the flow path space A1 in a region adjacent to the discharge space S1 in the depth direction X, a wide space is ensured in which the tube 65 can bend.

[0021] The loading section 19 has a loading surface 19B. The loading surface 19B is a surface that receives the media M on the discharge tray 19A. The loading section 19 also has an alignment plate 19C. The alignment plate 19C extends upward from the discharge tray 19A. The alignment plate 19C aligns the media M loaded on the discharge tray 19A by contacting the media M. In detail, when the media M is discharged onto the loading section 19, it slides in the Y direction along the inclined discharge tray 19A. This causes the base end of the media M to come into contact with the alignment plate 19C. As a result, the base ends of the multiple media M are aligned. Thus, the media M are aligned.

[0022] The loading unit 19 has a partition plate 19D. The partition plate 19D separates the flow path space A1 from the discharge space S1. The flow path space A1 is located deeper in the X direction than the discharge space S1 and extends along the Y direction. A part of a tube 65 is housed in the flow path space A1. The tube 65 includes a supply flow path that supplies ink, which is an example of a liquid, to the recording unit 20.

[0023] The recording device 10 of this embodiment is a color printer, and uses liquids of multiple colors (e.g., inks) for printing. A plurality of tubes 65 are provided, for example, the same number as the number of ink colors. A plurality of tubes 65 are bundled and aligned in the horizontal direction (e.g., the X direction). As shown in FIG. 1, the upper part of the tube 65 is housed in the flow path space A1. The upper part of the tube 65 has a curved path. The downstream end of the tube 65 is connected to the recording unit 20 (see FIG. 2), which is the supply destination of the ink. The degree to which the upper part of the tube 65 is curved changes in accordance with the movement of the recording unit 20.

[0024] <Internal configuration of recording device 10> Next, the internal configuration of the recording device 10 will be described with reference to Fig. 2. The recording device 10 accommodates, within a device body 11, a transport mechanism that transports the medium M, a recording mechanism that records on the medium M, and a maintenance mechanism that maintains the recording unit 20.

[0025] The recording device 10 includes a transport path T along which the medium M to be recorded by the recording unit 20 is transported. The medium M is transported through the transport path T shown by the dashed line in FIG. 2. The AB coordinate system shown on the YZ plane is an orthogonal coordinate system. The A direction is the transport direction of the medium M in the area of ​​the transport path T facing the recording head 20H of the recording unit 20. The direction toward the upstream of the A direction is called the -A direction, and the direction toward the downstream is called the +A direction. In this embodiment, the A direction is a direction inclined so that the +A direction is located in the +Z direction more than the -A direction. Specifically, it is inclined in the range of 30° to 80° with respect to the horizontal direction, and in particular, in the example shown in FIG. 2, it is inclined by approximately 60° to 80°. In this way, the transport direction of the medium M when the recording unit 20 records on the medium M is an inclined direction that intersects with both the horizontal direction and the vertical direction Z.

[0026] As shown in FIG. 2, the recording device 10 includes a moving device 30 and a recording unit 20 that performs recording on a medium M as a moving body. The recording unit 20 moves in the B direction, which is a direction facing the transport unit 25. Therefore, the direction in which the recording unit 20 moves is also called the moving direction B. The direction in which the recording unit 20 approaches the transport path T is called the +B direction, and the direction in which the recording unit 20 moves away from the transport path T is called the -B direction. The -B direction is a direction in which the recording head 20H moves diagonally upward along the direction in which the recording head 20H moves away from the transport unit 25. The B direction is a direction inclined toward a position in the +Z direction relative to the -B direction, and is perpendicular to the A direction. Specifically, the moving direction B is inclined in the range of 10° to 50° with respect to the horizontal direction, and in particular, in the example shown in FIG. 2, it is inclined by approximately 10° to 30°.

[0027] As shown in Fig. 2, the recording unit 20 can move to a recording position PH3 where recording is performed on the medium M, and an origin position PH0 shown by a two-dot chain line in Fig. 2, which is retreated from the recording position PH3. The recording unit 20 can move to a plurality of positions including at least the origin position PH0 and the recording position PH3 by moving in the direction B. The movement direction B of the recording unit 20 is accompanied by a displacement of the recording unit 20 in the vertical direction Z. Note that the movement direction B of the recording unit 20 is not limited to a direction forming a predetermined angle with respect to the horizontal, and may be the horizontal direction or the vertical direction Z.

[0028] When the recording unit 20 is at the recording position PH3, the recording head 20H ejects liquid such as ink onto a portion of the medium M supported by the transport unit 25. In this way, the recording unit 20 records information such as an image onto the medium M.

[0029] The moving device 30 includes a guiding unit 36 ​​that guides the guided portion 27 of the recording unit 20, and a detection unit SE1 capable of detecting the recording unit 20, which is an example of a moving body, at an origin position PH0. The detection unit SE1 is configured to be able to detect the recording unit 20 when it is at the origin position PH0. The origin position PH0 detected by the detection unit SE1 is a position that serves as the origin when measuring the position of the recording unit 20 on the movement path. In other words, the detection unit SE1 detects the origin position PH0 of the recording unit 20 that is movable along the movement direction B.

[0030] As shown in Figure 2, the guide section 36 includes a first guide rail 37 that guides the guide roller 28 along the movement direction B, and second guide rails 38, 39 that are connected to the first guide rail 37 and guide the guide roller 28 along a cross direction that intersects with the movement direction B.

[0031] A cassette 18 is disposed in a detachable state at the bottom of the device body 11. In the example of FIG. 2, one cassette 18 is shown, but multiple cassettes 18 may be provided by adding more cassettes. The cassettes 18 store medium M. The medium M stored in each cassette 18 is transported along a transport path T by a pickup roller 21 and a pair of transport rollers 22, 23. A transport path T1 extending from an external device and a transport path T2 extending from a feed tray 17T provided in the device body 11 merge into the transport path T.

[0032] Additionally, a transport unit 25, a plurality of transport roller pairs 26, and a plurality of flaps 24 are disposed along the transport path T. The transport unit 25 transports the medium M while supporting a portion of the medium M at a recording position facing the recording unit 20. The flap 24 has a function of switching the path along which the medium M is transported.

[0033] The transport path T forms a curved portion in the upstream region leading to the recording position, and extends in the direction A in the downstream region from the curved portion. Downstream of the transport unit 25 in the transport path T, there are transport paths T3 and T4 toward the stacking unit 19, and a reversing path T5 for reversing the front and back of the medium M. The stacking unit 19 may be provided with a discharge tray (not shown) in conjunction with the transport path T4. Note that, when double-sided recording is performed, the reversing path T5 is a path through which the medium M having completed recording on the first side is conveyed before recording on the second side. The medium M is reversed in the reversing path T5, and is sent to the recording position through the transport path T again in the same manner as when recording on the first side, whereby recording on the second side is performed.

[0034] 2, the transport unit 25 has, as an example, two pulleys 25A, an endless transport belt 25B wound around the two pulleys 25A, and a transport motor (not shown) that drives the pulley 25A. The medium M is transported to a position facing the recording unit 20 while being attracted to the belt surface of the transport belt 25B. As a method for attracting the medium M to the transport belt 25B, a known attraction method such as an air suction method or an electrostatic attraction method can be used.

[0035] The recording unit 20 has a recording head 20H that ejects ink, which is an example of liquid. The recording head 20H is disposed to face the transport unit 25 in the B direction. The recording head 20H has nozzles 20N (see FIG. 22) that open to an ejection surface 20A that faces the transport unit 25. The recording unit 20 is a line head configured so that the recording head 20H that ejects ink covers the entire area of ​​the width direction X of the medium M. Note that the recording unit 20 may be of a serial recording type in which a recording head mounted on a carriage ejects ink while moving in the width direction X of the medium M together with the carriage.

[0036] The recording device 10 includes a first maintenance unit 70 that performs maintenance on the recording unit 20. The first maintenance unit 70 is movable between a maintenance position where maintenance is performed on the recording head 20H and a retracted position PC1 retracted in the -A direction from the maintenance position. The first maintenance unit 70 is, for example, a cap unit. In the recording state shown in FIG. 2, the recording unit 20 is disposed at the recording position PH3, and the first maintenance unit 70 is retracted to the retracted position PC1. This retracted position PC1 is a position deviated in the A direction from the movement path of the recording unit 20 so as not to interfere with the recording unit 20. The A direction is the movement direction of the first maintenance unit 70, and is therefore also referred to as the movement direction A.

[0037] The recording device 10 includes a second detection unit SE2 capable of detecting the first maintenance unit 70 at the retracted position PC1. The second detection unit SE2 is configured to be able to detect the first maintenance unit 70 when at the retracted position PC1. In other words, the retracted position PC1 is also the origin position of the first maintenance unit 70. The retracted position PC1 detected by the second detection unit SE2 is also the origin position when measuring the position of the first maintenance unit 70 on the movement path. The maintenance performed by the first maintenance unit 70 will be described in detail later.

[0038] Thus, the recording device 10 includes the recording unit 20, which is an example of a moving body (first moving body) that moves in the moving direction B, and the first maintenance unit 70, which is an example of a moving body (second moving body) that moves in the moving direction A. The recording device 10 also includes a second maintenance unit (not shown) that wipes the ejection surface 20A (see FIG. 8) of the recording unit 20. The second maintenance unit moves in a direction (X direction) that intersects (for example, perpendicular to) both the A direction and the B direction. The second maintenance unit is a wiping unit that moves in the moving direction X. The second maintenance unit may be an example of a moving body (third moving body). Here, the moving body in this embodiment refers to a moving body that is configured to be movable along the moving direction by being guided by a guide unit, and is configured to be detachable from the guide unit by moving in a cross direction that intersects the moving direction.

[0039] As shown in Fig. 2, the recording device 10 includes a liquid storage unit 90 and a control unit 100 in a device body 11. The liquid storage unit 90 stores a liquid such as ink. The liquid storage unit 90 supplies the liquid such as ink to a recording head 20H constituting the recording unit 20 through a tube 65 shown in Fig. 1. The recording head 20H ejects the liquid such as ink supplied from the liquid storage unit 90.

[0040] The control unit 100 is responsible for controlling the recording device 10. The control unit 100 controls the operation of each unit of the recording device 10. The control unit 100 sets the respective origin positions of the recording unit 20, the first maintenance unit 70, and the second maintenance unit based on detection signals input from various detection units SE1, SE2, etc. In other words, the control unit 100 performs an origin search operation to detect the origin position for each moving body. The control unit 100 sets the origin position detected by the origin search operation for each moving body. The control unit 100 controls the positions of the recording unit 20, the first maintenance unit 70, and the second maintenance unit on their respective movement paths based on the origin position set for each moving body.

[0041] Here, when the accuracy of the origin position is reduced, the positions of the recording unit 20, the first maintenance unit 70, and the second maintenance unit when positioned at a predetermined target position are shifted from the expected normal position by an amount corresponding to the reduction in accuracy. For example, in the case of the recording unit 20, when the position accuracy of the recording position PH3 is reduced, printing deviations and the like are likely to occur when recording on the medium M, and the print quality is reduced. In the recording device 10, the position of the recording unit 20 when it is at the recording position PH3 is adjusted in multiple stages by a gap adjustment mechanism (not shown) so that the gap between the recording head 20H and the transport unit 25 becomes a value corresponding to the type of the medium M. When the position accuracy on the movement path of the recording unit 20 is reduced, the accuracy of the gap when recording at the recording position PH3 is also reduced, and printing defects such as printing deviations are likely to occur. In this way, since the origin position is a reference position for the recording position and the maintenance position such as capping and wiping, a reduction in the detection accuracy of the origin position may lead to a reduction in printing accuracy, maintenance defects, and the like.

[0042] Furthermore, if the positional accuracy of the first maintenance unit 70 is reduced, this will adversely affect maintenance such as capping and cleaning. Furthermore, if the positional accuracy of the second maintenance unit is reduced, this will adversely affect wiping accuracy, such as reducing the degree of wiping of the ejection surface 20A of the recording head 20H. For this reason, it is important to accurately detect the origin positions of the respective moving bodies consisting of the recording unit 20, the first maintenance unit 70, and the second maintenance unit, using the detection units SE1, SE2, etc.

[0043] <About the moving mechanism and stopping position of the moving object> Next, the moving device 30 that moves the recording unit 20 and the main stopping positions of the recording unit 20 will be described with reference to Figs. 3 to 5. In Figs. 3 to 5, the moving device 30 has a pair of guide parts 36 on both sides in the X direction, which is one of two directions intersecting with the moving direction B of the recording unit 20, which is an example of a moving body, but only one of the guide parts 36 is shown. The pair of guide parts 36 have a shape that is approximately plane-symmetrical with respect to a virtual plane that passes through the center (width center) of the recording unit 20 in the X direction and is parallel to the YZ plane. In other words, the moving device 30 has the other guide part 36 that has the same guide function as the one guide part 36 shown in Figs. 3 to 5.

[0044] 3, the recording device 10 includes a moving device 30 that moves the recording unit 20, which is an example of a moving body, along a moving direction B. The moving device 30 includes a guiding unit 36 ​​and a guided unit 27 of the recording unit 20.

[0045] The guide section 36 has a first guide rail 37 as an example of a first guide section extending along the movement direction B, and second guide rails 38, 39 as an example of a second guide section extending in an intersecting direction intersecting the first guide rail 37. The second guide rails 38, 39 branch off from a midpoint of the first guide rail 37 and extend in the Z direction, which is an example of an intersecting direction. The guide rails 37 to 39 are, for example, grooved rails that open in the X direction.

[0046] The recording unit 20 has guided portions 27 on both side surfaces in the width direction X, which are guided by guide rails 37 to 39. The guided portions 27 are provided on the side surfaces of the recording unit 20. Here, the configuration of guided portion 27 will be described with reference to FIG. 9. As shown in FIG. 9, guided portion 27 includes guide roller 28, which is an example of a first guided portion, and spindle 29, which is an example of a second guided portion. The first guided portion in this embodiment is a rotating body. Specifically, the first guided portion is guide roller 28, for example. The second guided portion in this embodiment is spindle 29. Guide roller 28 is a rotating body that is rotatable with respect to spindle 29.

[0047] The guide roller 28 is made of, for example, a roller. A plurality of guide rollers 28 (for example, two) are provided on each side of the recording unit 20. The plurality of guide rollers 28 are inserted into the groove of the first guide rail 37. The first guide rail 37 guides the guided portion 27 of the recording unit 20 in the moving direction B. The plurality of guide rollers 28 are guided by the first guide rail 37, so that the recording unit 20 moves in the moving direction B along the first guide rail 37. The second guided portion may be a rotating shaft instead of the support shaft 29. The rotating shaft is rotatably supported by the recording unit 20, and the guide roller 28, which is an example of the first guided portion, is fixed to the tip of the rotating shaft. The guide roller 28 is configured to be rotatable together with the rotating shaft. In this way, the rotating body may be configured to rotate around the support shaft 29, or the rotating shaft may be configured to rotate integrally with the rotating body.

[0048] Returning to FIG. 3, the second guide rails 38, 39 guide the recording unit 20 in an intersecting direction intersecting with the moving direction B. The intersecting direction is the direction in which the recording unit 20 is attached and detached when replaced. The intersecting direction is, for example, the vertical direction Z. For this reason, the Z direction is also referred to as the intersecting direction Z.

[0049] 3, the moving device 30 includes a first motor 31 as a drive source for moving the recording unit 20, and a rack-and-pinion mechanism including a pinion 32 (driving gear) and a rack 33 that transmit the power of the first motor 31 to the recording unit 20. The pinion 32 rotates forward and backward by the power of the first motor 31. When the first motor 31 is driven, the recording unit 20 moves in a moving direction B by the power transmitted via the meshing between the pinion 32 and the rack 33.

[0050] Furthermore, the moving device 30 includes a guide unit 36 ​​that guides the recording unit 20 along the moving direction B. The recording unit 20 moves in the moving direction B while being guided by a first guide rail 37, which is an example of a first guide unit, extending along the moving direction B.

[0051] The recording unit 20 is guided by the first guide rail 37 to move to one or more positions away from the transport unit 25 with respect to the recording position PH3. Specifically, the recording unit 20 is guided by the first guide rail 37 to move along the moving direction B, and is thus capable of moving to a plurality of stop positions such as the recording position PH3, the capped position PH2 (FIG. 4), the origin position PH0 (FIG. 5), the replacement position PH1 (FIG. 23), the flushing position (idle discharge position), the wiped position, and the retreat position, all shown in FIG. The replacement position PH1 (attachment / detachment position), at which the recording unit 20 is attached / detached in a direction (e.g., Z direction) that intersects with the moving direction B, is located near the origin position PH0.

[0052] The recording position PH3 at which the recording unit 20 is located as shown in FIG. When the recording unit 20 is at the replacement position PH1 (FIG. 23) on the first guide rail 37, it is connected to the first guide rail 37 and can be guided to replacement second guide rails 38, 39 extending in a direction intersecting the first guide rail 37. In the recording device 10, a user or an operator such as a serviceman can remove the recording unit 20 from the device body 11 for maintenance or replace the recording unit 20 with a new recording unit 20 at the replacement position PH1. When a user operates the operation unit 13 (see FIG. 1) to instruct the recording device 10 to replace the recording unit 20, the control unit 100 moves the recording unit 20 to the replacement position PH1. This allows the operator to attach and detach the recording unit 20 to and from the device body 11 through the operation opening 11B (see FIG. 1) that is exposed when the discharge tray 19A is removed.

[0053] 3, the recording device 10 includes a guide rail 77 that guides the first maintenance unit 70 in the movement direction A. The guide rail 77 extends along the movement direction A. The guide rail 77 is, for example, a grooved rail that opens in the X direction.

[0054] As shown in FIG. 3, the recording device 10 includes a moving device 73 that moves the first maintenance unit 70 in the moving direction A. For this reason, when distinguishing between the moving devices 30 and 73, the moving device 30 is also referred to as the first moving device 30, and the moving device 73 is also referred to as the second moving device 73. The second moving device 73 includes a second motor 74 that is a drive source that moves the first maintenance unit 70 along the moving direction A, and a pinion 75 (driving gear) and a rack 76 that transmit the power of the second motor 74 to the first maintenance unit 70. The length of the rack 76 is, for example, longer than the length of one revolution of the pinion 75. The power of the second motor 74 is transmitted to the first maintenance unit 70 via the meshing of the pinion 75 (driving gear) and the rack 76, so that the first maintenance unit 70 moves along the moving direction A. The power transmission mechanism that transmits the power of the second motor 74 to the first maintenance unit 70 is not limited to a rack-and-pinion mechanism, and may be another mechanism such as a belt-type power transmission mechanism.

[0055] As shown in FIG. 3, a plurality of guide rollers 78 (see FIG. 7) are rotatably attached to each side surface of the first maintenance unit 70. The guide rollers 78 are, for example, rollers. The guide rollers 78 on both sides engage with guide rails 77 on both sides. The guide rollers 78 rotate and are guided by the guide rails 77, thereby enabling the first maintenance unit 70 to move in the movement direction A. When the first maintenance unit 70 is in the retracted position PC1 shown in FIG. 3, it is detected by the second detection unit SE2.

[0056] As shown in FIG. 3, the first maintenance unit 70 cleans the recording head 20H as maintenance. The first maintenance unit 70 is a cap unit 71 (cap unit) that cleans the recording head 20H. The cap unit 71 in this example cleans the nozzles 20N (see FIG. 22) of the recording head 20H. The cap unit 71 has a cap 72 shown in FIG. 3. As shown in FIG. 4, the cap unit 71, in a capping state in contact with the recording head 20H, forcibly discharges waste liquid such as thickened ink and ink containing air bubbles from within the nozzles 20N. This causes the nozzles 20N to be cleaned by the cap unit 71. This cleaning prevents or eliminates clogging of the nozzles 20N of the recording head 20H.

[0057] The second maintenance section is a wiper section (wiper unit) that performs wiping to wipe the ejection surface 20A (see FIG. 7) of the recording head 20H as a maintenance operation. The wiper section has a wiper member (wiping member). The wiper section wipes the ejection surface 20A of the recording head 20H with the wiper member.

[0058] 4, the recording unit 20 is located at the capped position PH2 when the ejection surface 20A of the recording head 20H is covered with the cap 72. In other words, the recording position PH3 is the position where the recording unit 20 is located when the recording unit 20 is capped with the cap 72. At this time, the first maintenance unit 70 is located at the capping position PC2. When not recording, the recording unit 20 waits at the capped position PH2 in a state where it is capped with the cap 72. The retracted position is a position on the -B direction side of the capped position PH2, and the first maintenance unit 70 moves to the capping position PC2, and then the recording unit 20 moves to the capped position PH2, whereby the recording head 20H is capped with the cap 72.

[0059] 5, the recording unit 20 is located at an origin position PH0, which is a position when the recording unit 20 performs an origin return operation to detect the origin position PH0 on the movement path. The recording device 10 includes a first detection unit SE1 capable of detecting the recording unit 20 at the origin position PH0. The first detection unit SE1 is disposed at a position where it can detect the recording unit 20 when it is at the origin position PH0. The origin position PH0 is located on the opposite side of the movement direction B from the recording position PH3.

[0060] 3, the recording device 10 includes a moving device 73 that moves the first maintenance unit 70 in a moving direction A along the ejection surface 20A. Hereinafter, the moving device 30 is also referred to as the first moving device 30, and the moving device 73 is also referred to as the second moving device 73. The moving direction A is a direction that intersects (for example, perpendicular to) the moving direction B of the recording unit 20. The second moving device 73 includes, for example, a rack 76 and a pinion 75 (driving gear), and a second motor 74 that is a drive source for the pinion 75. The second moving device 73 moves the first maintenance unit 70 in the direction A in which the rack 76 extends.

[0061] The capping portion 71 can be moved back and forth in the movement direction A by the second moving device 73. The capping portion 71 moves to a retracted position PC1 shown in Fig. 3 and a capping position PC2 shown in Fig. 5 where the capping portion 71 faces the recording head 20H. The retracted position PC1 is a position where the capping portion 71 waits when the recording unit 20 is recording. The capping position PC2 is a position where the capping portion 71 is positioned when capping is performed to cover the ejection surface 20A of the recording head 20H.

[0062] 3 moisturizes the recording head 20H and performs maintenance on the recording head 20H. The first maintenance unit 70 is a cap unit 71 having a cap 72 that covers the recording head 20H. The cap 72 as the first maintenance unit 70 performs capping as maintenance.

[0063] The first maintenance unit 70 is provided to be movable in a movement direction A that intersects (for example, perpendicular to) direction B, which is the movement direction of the recording unit 20. The first maintenance unit 70 moves back and forth in the movement direction A while being guided by a guide rail 77 extending in the A direction. The first maintenance unit 70 is a cap unit 71 having a cap 72 that performs maintenance on the recording head 20H.

[0064] When capping is performed, the capping unit 71 moves in the +A direction from the retracted position PC1 to the capping position PC2. At this time, the recording unit 20 is slightly retracted to a retracted position on the -B direction side of the capped position PH2. When the capping unit 71 has finished moving to the capping position PC2, the recording unit 20 moves in the +B direction from the retracted position to the capped position PH2, and the recording unit 20 is capped by the cap 72 as shown in FIG.

[0065] The control unit 100 performs an initialization operation when the recording device 10 is powered on. In the initialization operation, the recording unit 20, the first maintenance unit 70, and the second maintenance unit are moved along paths that pass through their respective origin positions PH0, PC1, etc., to search for the origin positions at which the detection units SE1, SE2, etc. are turned on, thereby performing an origin return operation. Note that the origin position of the first maintenance unit 70 is not limited to the retracted position PC1, and may be any position on the movement path. Furthermore, the control unit 100 performs origin return for the recording unit 20 and the first maintenance unit 70 when an error occurs that makes it impossible to recognize the positions of the recording unit 20 and the first maintenance unit 70.

[0066] In order to return the recording unit 20 to its origin, the recording unit 20 is moved to the origin position PH0. When the first detection unit SE1 detects the recording unit 20, the control unit 100 sets the position of the recording unit 20 at that time to the origin position PH0.

[0067] To perform the origin return operation of the first maintenance unit 70, the first maintenance unit 70 is moved to the origin position (retracted position PC1). When the second detection unit SE2 detects the first maintenance unit 70, the control unit 100 sets the position of the first maintenance unit 70 at that time to the origin position PC1 (retracted position PC1). Note that for the wiping unit (not shown), which is the second maintenance unit, the origin position of the second maintenance unit is also set in a similar procedure based on the detection result of the third detection unit (not shown).

[0068] The control unit 100 resets the counter at the position of the origin detected in this origin return operation. Thereafter, as the recording unit 20, the first maintenance unit 70, and the second maintenance unit move, each counter counts, for example, the number of pulse edges of the detection signals from three encoders (not shown) that detect their respective positions. As a result, each counter counts a count value indicating the respective positions of the recording unit 20, the first maintenance unit 70, and the second maintenance unit.

[0069] 6, a motion mechanism 50 including a recording unit 20 is disposed inside the housing 11A at one end side (+Y direction side) in the width direction Y of the device. A liquid supply mechanism 60 is disposed inside the housing 11A at the other end side (-Y direction side) in the width direction Y of the device.

[0070] The motion mechanism 50 includes a frame 51 that holds the recording unit 20 movably in a moving direction B. The frame 51 is formed by a pair of side frames 52, 53 that face each other at a predetermined interval in the depth direction X, a plurality of connecting frames 54 that connect the pair of side frames 52, 53, and the like. The frame 51 constitutes the framework of the motion mechanism 50. The recording unit 20 has a recording head 20H at the downstream end in the moving direction B while being supported by the frame 51. The pair of side frames 52, 53 are a first side frame 52 disposed on the front side and a second side frame 53 disposed on the rear side. The frame 51 is supported by a rear frame 15A and the like that constitutes the housing 11A.

[0071] The liquid supply mechanism 60 constituting the recording device 10 shown in FIG. 6 includes a mounting section 61 to which a liquid storage section 90 that stores liquid to be ejected onto a medium M can be detached. The liquid storage sections 90 are attached by being inserted into the mounting section 61 in the depth direction X. The +X direction of the mounting section 61 is the mounting direction of the liquid storage section 90, and the -X direction is the removal direction of the liquid storage section 90. The liquid storage section 90 has a connection section (not shown) on the lower surface in the mounting position shown in FIG. 6. The mounting section 61 has a connected section (not shown) on the upper surface that can be connected to the connection section on the liquid storage section 90 side. In the mounting state shown in FIG. 6 where the liquid storage section 90 is mounted on the mounting section 61, the connection section and the connected section are connected with the valve on the liquid storage section 90 side open. Therefore, the liquid storage section 90 and the mounting section 61 are connected in a state in which liquid can flow from the liquid storage section 90 to the mounting section 61.

[0072] In the example of the mounting section 61 shown in Fig. 6, four liquid storage sections 90 can be mounted. That is, the mounting section 61 includes three color liquid storage sections 90 and one black liquid storage section 90. The three color liquid storage sections 90 respectively store cyan, magenta, and yellow liquids (e.g., inks). The mounting section 61 has a partition plate 69 that partitions the arrangement area of ​​the multiple (e.g., four) liquid storage sections 90 mounted on its upper surface. The multiple liquid storage sections 90 are mounted in the storage space with the partition plate 69 covering three directions, the +Y direction side, the -Y direction side, and the +X direction side.

[0073] The mounting section 61 has a number of operating parts 61A provided for each liquid storage section 90. In the example shown in Fig. 6, the liquid storage section 90 is locked in a connected state with the mounting section 61 when the user pushes the front part of the liquid storage section 90 in the mounting direction downward, as in the case of the black liquid storage section 90, downward displacement. Then, when the user operates the operating part 61A, the liquid storage section 90 is released from the lock, and the front part of the liquid storage section 90 is displaced upward by the biasing force of a spring (not shown). In this unlocked state, the user can remove the liquid storage section 90 in the removal direction (-Y direction).

[0074] The mounting unit 61 shown in FIG. 6 includes a liquid supply unit 62 including a plurality of sets of pumps and tanks (both not shown) provided for each liquid storage unit 90. The liquid sent from the liquid storage unit 90 to the mounting unit 61 is stored in the tank. The pump sends out the liquid in the tank in the direction of liquid flow. This causes the liquid to be sent by the pump through the tube 65 to the recording unit 20. In this way, the liquid in the liquid storage unit 90 is supplied to the recording unit 20 via the mounting unit 61 and the tube 65.

[0075] The mounting part 61 is provided with a power connector 68 for sending the power required to drive the pump and the like in the liquid supply part 62, and a pair of air flow path connectors 67 for supplying and discharging the pressurized air required for various pneumatic components including the valves in the liquid supply part 62. One of the pair of air flow path connectors 67 is for connecting an air supply flow path, and the other is for connecting an air discharge flow path. In addition, below the liquid supply part 62, a waste liquid storage part 63 is arranged for storing leaked liquid such as liquid that leaks when the liquid storage part 90 is removed from the mounting part 61.

[0076] 6 and 7, the recording device 10 further includes a tube 65 having one end connected to the recording unit 20 and capable of forming a curved portion 65C. The recording unit 20 performs recording on the medium M by discharging liquid onto the medium M. The other end of the tube 65 is connected to the mounting unit 61. The origin position PH0 is located between the mounting unit 61 and the recording position PH3.

[0077] As shown in FIG. 6, the base of the tube 65 is connected to the bottom of the mounting unit 61 at the rear side (back side) in the mounting direction (+Y direction). The tube 65 is supported by a frame (not shown) in a state where it extends upward (-Z direction) from the base. Furthermore, the tube 65 is curved at its upper end. A joint member 66 is fixed to the tip of the part where the tube 65 extends diagonally downward from the curved part toward the recording unit 20. The joint member 66 is connected to the recording unit 20. In detail, the recording unit 20 has a connected part (not shown) that can be connected to the joint member 66 at the end on the +Y direction side of the upper part, which is the end opposite to the moving direction B. The joint member 66 has a connected part on the lower surface that can be connected to the connected part. The connection part of the joint member 66 is connected to the connected part of the recording unit 20, so that the liquid supplied through the tube 65 is supplied to the recording head 20H.

[0078] A portion of the tube 65 between an upper end of the portion supported by a frame (not shown) and extending in the vertical direction Z and the joint member 66 is deformable together with the curved portion 65C. Therefore, the curved portion 65C changes the degree of curvature in the process of the recording unit 20 moving in the moving direction B, so that the recording unit 20 can move in the moving direction B.

[0079] In this embodiment, the tube 65 includes a supply flow path 65A and a return flow path 65B. The supply flow path 65A and the return flow path 65B circulate the liquid through a circulation path that passes through the tank in the liquid supply unit 62 and the recording head 20H. The liquid is circulated to suppress settling of the pigment in the liquid, etc. The liquid supply method is not limited to a circulation method that circulates the liquid, and may be a method that sends the liquid in only one direction, from the liquid storage unit 90 to the recording head 20H.

[0080] Figures 7 and 8 show the internal structure of the recording device 10 as viewed from the rear side. Figure 7 shows the recording unit 20 in a state where it is at recording position PH3, and Figure 8 shows the recording unit 20 in a state where it is at origin position PH0. Note that Figures 7 and 8 show a non-attached state in which the liquid storage unit 90 is not attached.

[0081] Since the replacement position PH1 is located a short distance upstream of the origin position PH0 in the movement direction B, the position of the recording unit 20 when at the replacement position PH1 is almost the same as the position shown in FIG. 8. In this embodiment, the distance between the origin position PH0 and the replacement position PH1 is, for example, a value within a range of 3 to 10 mm. The distance between the origin position PH0 and the replacement position PH1 may be greater than 10 mm. For example, the origin position PH0 and the replacement position PH1 may be set at positions separated from each other, such as 30 mm or 50 mm.

[0082] As shown in Figs. 7 and 8, the mounting portion 61 has a plurality of connecting pipes 60A, 60B at its rear portion. The connecting pipes 60A, 60B protrude upward. The connecting pipes 60A, 60B are a first connecting pipe 60A to which a supply flow passage 65A is connected, and a second connecting pipe 60B to which a return flow passage 65B is connected. A base end of the supply flow passage 65A is connected to the first connecting pipe 60A. A base end of the return flow passage 65B is connected to the second connecting pipe 60B.

[0083] The supply flow path 65A extends upward (-Z direction) from a base end connected to the first connecting pipe portion 60A, and then extends obliquely downward while being curved at a curved portion 65C, and its tip is connected to a joint member 66. The return flow path 65B extends upward (-Z direction) from a base end connected to the second connecting pipe portion 60B, and then extends obliquely downward while being curved at a curved portion 65C, and its tip is connected to a joint member 66. A plurality of clip members 65D are attached to the tube 65 at intervals in the longitudinal direction. Therefore, the tube 65 can be deformed while maintaining a posture in which the multiple tubes are aligned horizontally.

[0084] As shown in Figures 7 and 8, the recording unit 20 is inclined at an acute angle with respect to the horizontal direction. In the example shown in Figure 7, the recording unit 20 is inclined in a direction that is tilted in a direction that is closer to the +Z direction as it approaches the +Y direction. A recording head 20H is fixed to the front end of the recording unit 20 in the moving direction B. The front surface of the recording head 20H in the moving direction B is the ejection surface 20A. The rear surface of the recording unit 20, which is the surface opposite to the ejection surface 20A, faces the liquid storage unit 90 when it is attached to the attachment part 61 (see Figure 6).

[0085] The joint member 66 is connected to the upper surface of the recording unit 20 in a position inclined at the same angle. The joint member 66 is connected to the tip of the portion extending obliquely downward from the curved portion 65C of the tube 65 toward the recording unit 20. Therefore, the joint member 66 is likely to be in a position facing obliquely downward. The lower surface of the joint member 66 is configured to be connected to the upper surface of the recording unit 20, which is also inclined obliquely downward. This makes it possible to prevent excessive load from being applied to the connection portion between the joint member 66 and the recording unit 20 and the connection portion between the tube 65 and the joint member 66 while the recording unit 20 moves in the movement direction B.

[0086] As shown in FIGS. 7 and 8, the degree of curvature of the tube 65 when the recording unit 20 is at the origin position PH0 (FIG. 8) is greater than the degree of curvature of the tube 65 when the recording unit 20 is at the recording position PH3 (FIG. 7).

[0087] Here, the first moving device 30 that moves the recording unit 20 will be described in detail. As shown in FIG. 7, the first moving device 30 includes a base member 34 having a rack 33 on its underside. The recording unit 20 is placed on the upper side of the base member 34 in a state in which it is movable relative to the base member 34 in a moving direction B. The rack 33 provided on the underside of the base member 34 meshes with the pinion 32. The base member 34 has a pair of rollers 35. The pair of rollers 35 are guided by guide rails 36A (see FIG. 9) provided on the inner surface of the side frame 52. The base member 34 is capable of moving in the moving direction B by the pair of rollers 35 being guided by the guide rails 36A.

[0088] Between the base member 34 and the recording unit 20, there are a rack formed on the inner surface of the base member 34, a rack formed on the side surface of the recording unit 20, and gears meshing with both racks (all not shown). Therefore, the recording unit 20 moves relative to the base member 34 by the same amount of movement as the base member 34. In other words, when the base member 34 moves in the +B direction, the recording unit 20 moves in the +B direction by twice the amount of movement. As a result, the recording unit 20, which is at the origin position PH0 shown in FIG. 8, is positioned at the recording position PH3 shown in FIG. 7 by the counterclockwise rotation of the pinion 32 in FIG. 8.

[0089] On the other hand, as the pinion 32 rotates clockwise in FIG. 7, the recording unit 20 moves from the recording position PH3 in the -B direction. The recording unit 20 moves, for example, to the origin position PH0 or the replacement position PH1. At this time, the base member 34 moves in the -B direction while accompanying the rotation of the roller 35. The recording unit 20 moves relative to the base member 34 by the same amount of movement as the base member 34. In other words, the recording unit 20 moves in the -B direction by twice the amount of movement of the base member 34.

[0090] For example, after the recording device 10 is powered on or when an error occurs, an origin return operation is performed. That is, when the recording device 10 is powered on or when an error occurs, the count value of the counter in the control unit 100 may not match the actual position of the recording unit 20. For this reason, the control unit 100 performs an origin return operation to move the recording unit 20 to the origin position PH0 from, for example, the capped position or the position at the time of the error occurrence. Here, the reason why the origin return operation is performed when the power is turned on is because there is a possibility that a user or the like touches the recording unit 20 while the power is off and moves the recording unit 20. Also, the reason why the origin return operation is performed when an error occurs is because, for example, the position of the recording unit 20 may be shifted due to the medium M stuck in the transport path when a medium jam occurs.

[0091] When the recording unit 20 is at the origin position PH0 shown in Fig. 8, the tube 65 is curved more than when the recording unit 20 is at the recording position PH3 shown in Fig. 7. Therefore, the recording unit 20 receives a reaction force in the direction shown by the white arrow in Fig. 8 from the curved tube 65. This reaction force acts as an external force that tends to rotate the recording unit 20 counterclockwise in Fig. 8.

[0092] <Regarding origin position detection of first detection unit SE1> Fig. 9 is a cross-sectional view of the peripheral part of the recording unit 20 when it is at the origin position PH0, as viewed from the rear. Fig. 9 shows the side surface of the recording unit 20 on the +X direction side (the side surface on the near side as viewed from the rear).

[0093] As shown in FIG. 9, the first detection unit SE1 is disposed at a position above the moving path of a pair of guided parts 27 on one side of the recording unit 20. The first detection unit SE1 is, for example, an optical sensor. The recording unit 20 has a frame 20F made of sheet metal forming its side. A detectable part 85 is formed on the upper part of the frame 20F. The detectable part 85 is formed by bending the upper part of the frame 20F in the +X direction and then in the -A direction. As shown in FIG. 11, the detectable part 85 has an inverted U shape when viewed from the +B direction, and its tip part is disposed at a position corresponding to the detection area of ​​the first detection unit SE1. In the process of the recording unit 20 moving in the moving direction B, the detectable part 85 passes through the detection area of ​​the first detection unit SE1. The position where the first detection unit SE1 detects the detectable part 85 is set as the origin position PH0 of the recording unit 20.

[0094] As shown in FIG. 9, the guided portion 27 has a guide roller 28 and a support shaft 29 whose length along the moving direction B is smaller than that of the guide roller 28. In this embodiment, the first guided portion is the guide roller 28, which is a rotating body, so the length along the moving direction B corresponds to the outer diameter. Therefore, the guided portion 27 has the guide roller 28 and the support shaft 29 whose outer diameter is smaller than that of the guide roller 28. Note that the moving distance until the support shaft 29 comes off the guide of the regulating portion 40 is the shortest distance between the origin position PH0 and the replacement position PH1, so in order to prevent the device main body 11 from becoming larger, it is necessary that the outer diameter of the support shaft 29 is smaller than that of the guide roller 28.

[0095] As shown in FIG. 9, the first guided portion is a guide roller 28 which is a rotating body, and the second guided portion is a rotating shaft or a support shaft 29 of the rotating body. <Configuration of detection units SE1 and SE2 and origin position PH0> Next, the configuration of the first detection unit SE1 that detects the recording unit 20 when it is at the origin position PH0 will be described with reference to Fig. 10 and Fig. 11. The configuration of the second detection unit SE2 is basically the same as that of the first detection unit SE1.

[0096] As shown in FIG. 10 and FIG. 11, the first detection unit SE1 is fixed to the support unit 52A which is a part of the side frame 52. The first detection unit SE1 has a main body unit 80 supported by the support unit 52A, and a light emitting unit 81 and a light receiving unit 82 (see FIG. 11) which respectively protrude upward from the main body unit 80. The light emitting unit 81 and the light receiving unit 82 face each other across a predetermined gap 83. The light emitting unit 81 and the light receiving unit 82 face each other in the X direction which intersects (for example, is perpendicular to) the moving direction B. The surface direction of the detected unit 85 on the recording unit 20 side is parallel to the moving direction B of the recording unit 20. In addition, the moving path of the detected unit 85 when it moves in the moving direction B passes through the gap 83 between the light emitting unit 81 and the light receiving unit 82. Therefore, the detected unit 85 passes through the optical axis LA of the light emitting unit 81 during the process of the recording unit 20 moving in the moving direction B. The position of the recording unit 20 when the first detection unit SE1 detects the detected portion 85 while the recording unit 20 is in the correct position is set as the origin position PH0. When the control unit 100 receives a detection signal indicating that the first detection unit SE1 has detected the position of the recording unit 20, it resets a counter that measures the position of the recording unit 20. As a result, the position of the recording unit 20 when the first detection unit SE1 detects the detected portion 85 is set as the origin position PH0.

[0097] The control unit 100 recognizes the position of the recording unit 20 based on the count value (measurement value) of the counter. The control unit 100 stores position data of the main stop positions of the recording unit 20 in a memory unit (not shown). The control unit 100 stops the recording unit 20 at the target stop position by stopping the rotation of the first motor 31 at a position where the count value of the counter reaches the value of the stop position data corresponding to the target stop position. For example, if the origin position PH0 is set with a deviation, the reference for determining the stop position of the recording unit 20 will also be shifted, and the stop position of the recording unit 20 will be shifted by an amount corresponding to the deviation amount of the reference. For this reason, the origin position PH0 needs to be set with the required high accuracy.

[0098] <Configuration of the restriction portion 40> Next, the regulating portion 40 that regulates the posture of the recording unit 20 when it is at the origin position PH0 will be described with reference to Fig. 12. As shown in Fig. 12, the guiding portion 36 has the regulating portion 40 that regulates the displacement of the guided portion 27 in the intersecting direction.

[0099] The regulating portion 40 prevents the recording unit 20 from shifting in position when it receives the reaction force of the tube 65 as an external force. The recording unit 20 shown in FIG. 12 is cut on a plane parallel to the YZ plane at a position where a pair of guided portions 27 located on the rear side are visible. In FIG. 12, the recording unit 20 is at the origin position PH0. The origin position PH0 is located a short distance downstream in the moving direction B (+B direction side) from the replacement position PH1 (see FIG. 23).

[0100] The recording unit 20 receives an external force that displaces the tip side in the moving direction B downward and the upstream end side upward due to the reaction force of the tube 65 (see FIG. 8). Therefore, the guided part 27 on the moving direction B side (left side in FIG. 12) is pressed against the lower surface of the first guide rail 37, and the guided part 27 on the upstream side in the moving direction B (right side in FIG. 12) receives an external force with an upward component. When the recording unit 20 is at the origin position PH0, the guided part 27 is located near the connection part P1 between the first guide rail 37 and the second guide rails 38, 39. As shown in FIG. 12, when the recording unit 20 is at the origin position PH0, the second guide rails 38, 39 open in the intersecting direction (-Z direction) near the guided part 27. The guided part 27 abuts against the first guide rail 37 near the connection part P1. The restricting portion 40 restricts the displacement of the guided portion 27 in the intersecting direction (-Z direction) at this time. The connecting portion P1 refers to a connecting area that connects the first guide portion and the second guide. In this embodiment, the connecting portion P1 refers to a connecting area that becomes a path of the guided portion 27 in a portion that connects the first guide rail 37 and the second guide rails 38, 39.

[0101] <Comparative Example> Here, with reference to FIG. 13, a comparative example having a configuration without the regulating unit 40 will be described. In the comparative example shown in FIG. 13, when the recording unit 20 is at the origin position PH0, the guide roller 28 is regulated at a position near the connection part P1 with respect to the first guide rail 37. At this time, the recording unit 20 receives a reaction force in the direction indicated by the white arrow in FIG. 13 from the tube 65 (see FIG. 8), so that the recording unit 20 receives an external force in the counterclockwise direction in FIG. 13. As a result, the guide roller 28 on the upstream side (right side) of the moving direction B receives an upward force. As a result, the upstream guide roller 28 is likely to be guided from the connection part P1 to the second guide rail 39 side with rotation while contacting the end part corresponding to the connection part P1 of the first guide rail 37. When the upstream guide roller 28 is displaced upward toward the second guide rail 39 side, the recording unit 20 is displaced from the normal posture in the counterclockwise direction in FIG. 13.

[0102] Next, the reason for setting the origin position PH0 to a position near the connection part P1 and problems that arise in that case will be described with reference to Fig. 14 to Fig. 16. Note that in Fig. 14 and Fig. 15, the center position of the guide roller 28 when the recording part 20 is at the origin position PH0 or the replacement position PH1 is shown as the origin position PH0 or the replacement position PH1 for the sake of convenience. In other words, the center position of the guide roller 28 when the recording part 20 is at the origin position PH0 is set as the origin position PH0, and the center position of the guide roller 28 when the recording part 20 is at the replacement position PH1 is set as the replacement position PH1.

[0103] As shown in Fig. 14, when the origin position PH0 is set near the connection part P1, the movement distance L1 from the origin position PH0 to the replacement position PH1 can be made small. However, as shown in Fig. 13, there is a risk that the guide roller 28 receiving the reaction force will be displaced upward along the second guide rail 39. In that case, the recording unit 20 will be tilted counterclockwise from the normal posture.

[0104] FIG. 16 explains the reason why the detection accuracy of the origin position PH0 decreases due to the tilt of the recording unit 20. When the recording unit 20 tilts counterclockwise from the normal posture, the detected portion 85 tilts from the normal posture accordingly, as shown in FIG. 16 as an example. When the recording unit 20 is in the normal posture, the detected portion 85 at the position shown by the solid line in FIG. 16 blocks the optical axis LA of the first detection unit SE1, and the first detection unit SE1 detects the origin position PH0 at the position shown by the solid line in the figure. In contrast, when the recording unit 20 tilts counterclockwise from the normal posture, the detected portion 85 blocks the optical axis LA of the first detection unit SE1 only after it moves to the position shown by the two-dot chain line in FIG. 16. Therefore, the first detection unit SE1 detects the origin position PH0 at the position shown by the two-dot chain line in FIG. 16 after moving a little more than the position shown by the solid line in FIG. 16. That is, when the recording unit 20 is tilted from the normal posture, the origin position PH0 of the recording unit 20 is shifted, and as a result, the detection accuracy of the origin position PH0 decreases.

[0105] FIG. 15 shows an example (second comparative example) of a measure to solve the above problem. As shown in FIG. 15, in order to ensure that the guide roller 28 is restricted by the first guide rail 37 at the origin position PH0, the first guide rail 37 is extended upstream in the moving direction B until the connection part P1 is located upstream in the moving direction B compared to the examples shown in FIG. 13 and FIG. 14. This makes it possible to restrict the guide roller 28 from being displaced upward along the second guide rail 39 at the origin position PH0 even if it receives an external force having an upward force component. However, in this configuration, the moving distance L2 from the origin position PH0 to the replacement position PH1 is longer by the amount of the increase in the distance from the origin position PH0 to the connection part P1. In other words, it is necessary to extend the second guide rail 39 upstream in the moving direction B (-B direction side) compared to the first comparative example shown in FIG. 14. This is likely to lead to an increase in size of the recording device 10 in the width direction Y.

[0106] <Example> Therefore, in this embodiment, as in the example shown in FIG. 17, a regulating unit 40 is provided to regulate the support shaft 29 of the guide roller 28 at the origin position PH0. The regulating unit 40 has a guide surface 41 as an example of a third guide unit that guides the support shaft 29 along the moving direction B and does not guide the guide roller 28. The guide surface 41 is formed on the lower surface, which is the surface on the direction side opposite to the intersecting direction (-Z direction) in the regulating unit 40, and guides the support shaft 29 of the guide roller 28. In this embodiment, the regulating unit 40 regulates the support shaft 29 of the upstream guide roller 28 on one side of the total of four guide rollers 28 provided in pairs on both sides of the recording unit 20. Note that the regulating unit 40 may be provided on each of the guide units 36 arranged on both sides of the width direction X with respect to the moving path of the recording unit 20 so as to be able to regulate the support shaft 29 of the guide roller 28 on both sides of the recording unit 20.

[0107] The guide surface 41 has a first guide surface 42 located downstream in the moving direction B, a second guide surface 43 located upstream in the moving direction B, and an inclined surface 44 connecting the first guide surface 42 and the second guide surface 43. The distance (spacing) between the first guide surface 42 and the lower surface (inner bottom surface) of the first guide rail 37 is set to be wider in the area of ​​the first guide surface 42 than in the area of ​​the second guide surface 43. The spacing in the inclined surface 44 gradually narrows from the first guide surface 42 to the second guide surface 43. Due to the surface shape of this guide surface 41, as the upstream guide roller 28 moves upstream in the moving direction B, the support shaft 29 is gradually guided toward the vertical direction Z and is restricted by the second guide surface 43 at the origin position PH0.

[0108] As shown in Fig. 17, the regulating portion 40 has a regulating portion 45 that regulates the support shaft 29 of the upstream guide roller 28 when the guide roller 28 is at the origin position PH0. The regulating portion 40 is not limited to the shape and size shown in Fig. 17, and may be configured with only a portion corresponding to the regulating portion 45. In the example shown in Fig. 17, the regulating portion 40 is a separate member from the rail member, but the regulating portion 45 or the regulating portion 40 including the regulating portion 45 may be formed integrally with the rail member.

[0109] As shown in FIG. 17, when the guide portion 36 is viewed from the axial direction (X direction) of the guide roller 28, the support shaft 29 is located inside the outer circumferential contour of the guide roller 28. Furthermore, when the guide portion 36 is viewed from the axial direction (X direction) of the guide roller 28, the regulating portion 40 overlaps with the second guide rail 39. Here, the axial direction (X direction) corresponds to an example of a direction intersecting with the moving direction B and the intersecting direction (Z direction). In addition, the "outer circumferential contour" referred to here corresponds to the outer circumferential contour of a projection figure obtained by projecting the guide roller 28, which is an example of a first guided portion, in the axial direction onto a virtual plane perpendicular to the axial direction. For example, when a cylindrical object such as the guide roller 28 is viewed from the axial direction, an outer circumferential contour and an inner circumferential contour are specified, and the support shaft 29, which is an example of a second guided portion, may be located inside the outer circumferential contour.

[0110] The detection unit SE1 (see Figure 9) detects the position of the recording unit 20 as the origin position PH0 when at least a part of the guide roller 28 is located at the connection part P1 of the first guide rail 37 and the second guide rails 38, 39 and the support shaft 29 is regulated by the regulating part 40, as shown in Figure 17.

[0111] As shown in Fig. 18, even if the origin position PH0 is in the same position as in the comparative examples in Figs. 13 and 14, the restricting portion 40 restricts the support shaft 29, so that it is possible to restrict the guide roller 28 from displacing upward toward the second guide rail 39. Therefore, it is possible to detect the origin position PH0 of the recording unit 20 with high accuracy. Furthermore, since the origin position PH0 can be set near the connection portion P1, the movement distance from the origin position PH0 to the replacement position PH1 can be made short. This makes it difficult for the recording device 10 to become large in the width direction Y.

[0112] Fig. 19 shows the positional relationship between the regulating portion 40 and the guide rollers 28 etc. when viewed from upstream along the movement direction B. Furthermore, Fig. 20 shows a plan view of the regulating portion 40, first guide rail 37 and guide rollers 28 viewed from above (Z direction). That is, Fig. 20 is a plan view of the guide portion 36 and the regulating portion 40 viewed from the intersecting direction Z in which the second guide rail 39 extends. As shown in Figs. 18 to 20, the regulating portion 40 regulates the displacement of the support shaft 29 in the intersecting direction (-Z direction) and does not regulate the guide rollers 28.

[0113] 19, when the recording unit 20 is at the origin position PH0, the regulating unit 40 is located in the axial direction (X direction) of the guide roller 28 within a range in which the spindle 29 is exposed from the guide roller 28, but is not located in a range in which the guide roller 28 is located. This allows the regulating unit 40 to regulate the spindle 29, but does not allow the guide roller 28 to regulate. Therefore, the regulating unit 40 can regulate the spindle 29 without being hindered by the guide roller 28.

[0114] 19, the support shaft 29 may have a recess 29A whose outer diameter is smaller than other parts in the axial direction. The restricting portion 40 restricts the support shaft 29 at the recess 29A. The recess 29A may be a recess formed in the support shaft 29. The recess 29A may be formed by a small diameter portion formed at the tip of the support shaft 29 with a step and having a smaller outer diameter than other parts, and by the side of the guide roller 28 attached to the tip of the support shaft 29. The recess 29A may be formed by a flange portion protruding from the outer periphery of the support shaft 29 and the side of the guide roller 28.

[0115] In the process of the recording unit 20 moving along the movement direction B, the support shaft 29 is restricted with the lower end of the restricting portion 40 positioned within the recess 29A of the support shaft 29, so that the amount of deviation of the recording unit 20 in the width direction X is restricted to within the range of the width direction X of the recess 29A. This reduces the amount of deviation of the recording unit 20 in the width direction. For example, since the deviation of the detected portion 85 passing through the gap 83 of the detecting portion SE1 shown in FIG. 11 in the width direction X is restricted to within a predetermined range, it is possible to avoid contact or collision between the detected portion 85 and the detecting portion SE1.

[0116] 19 is a view in the +B direction of the restricting portion 40 as viewed from the first guiding direction (+B direction) in which the first guide rail 37 guides the guided portion 27 in a direction away from the connection portion P1. When the recording unit 20 shown in FIGS. 17 and 19 is in the origin position PH0, the restricting portion 40 overlaps with the guide roller 28 when the guiding portion 36 is viewed in the axial direction of the guide roller 28 (X direction).

[0117] 20, when the guided portion 27 is at the origin position PH0 and viewed along the Z direction, which is the direction in which the recording unit 20 is attached to and detached from the apparatus body 11, the spindle 29 and the guide roller 28 have overlapping portions, and the regulating portion 40 and the spindle 29 have overlapping portions. Furthermore, the regulating portion 40 and the guide roller 28 do not have overlapping portions. Also, the regulating portion 40 has an overlapping portion at the recess 29A of the spindle 29.

[0118] 20, when viewed in the intersecting direction (+Z direction), the detection unit SE1 (see FIG. 9) detects as the origin position PH0 the position of the moving body (recording unit 20) when the regulating unit 40 overlaps with the center of rotation C of the guide roller 28, which is a rotating body. Also, the detection unit SE1 detects as the origin position PH0 the position of the moving body (recording unit 20) when the center of rotation C of the guide roller 28 shown in FIG. 20 is located at the connection portion P1 of the first guide rail 37 and the second guide rails 38, 39.

[0119] <Attitude and connection relationship between the recording unit 20 and the tube 65> Next, the attitude and connection relationship between the recording unit 20 and the tube 65 will be described with reference to FIGS.

[0120] 21, the ejection surface 20A is perpendicular to the movement direction B and intersects with the horizontal and vertical directions Z. One end of the tube 65 is connected to the upper surface 20T, which is a surface that intersects with the ejection surface 20A of the recording unit 20, along the upper surface 20T, which is the intersecting surface. The upper surface 20T, which is the intersecting surface, is the surface on the side in the direction (-Z direction side) where the recording unit 20 is removed along the second guide rails 38, 39. A first angle α, which is the angle between the upper surface 20T, which is the intersecting surface, and the horizontal plane HP, is smaller than a second angle β, which is the angle between the ejection surface 20A and the horizontal plane HP.

[0121] 21, on the upper surface 20T, which is an intersecting surface of the recording unit 20, the position where one end of the tube 65 is connected is located in a direction (-B direction) toward the origin position PH0 from the center of the upper surface 20T, which is an intersecting surface, in the moving direction B. In this embodiment, one end of the tube 65 is connected to the upper surface 20T of the recording unit 20 via a joint member 66. Note that the upper surface 20T has an uneven surface shape that is not flat, such as a portion where the joint member 66 is connected being formed in a concave shape, but may be a flat surface.

[0122] As shown in Fig. 22, the recording head 20H of the recording unit 20 has an ejection surface 20A in which ejection ports 20P for ejecting liquid are formed. The recording head 20H has a plurality of nozzles 20N that open to the ejection surface 20A. The openings of the nozzles 20N are the ejection ports 20P. The nozzles 20N eject liquid in an ejection direction parallel to the movement direction B. Note that at the ejection port 20P, a concave meniscus is formed in which the liquid in the nozzles 20N is recessed toward the back of the nozzles 20N.

[0123] 23, the second guide rails 38, 39 guide the guide roller 28 when attaching or detaching the movable body (recording unit 20). The recording unit 20 can move to an exchange position PH1 that is further retracted from the origin position PH0 (see FIG. 17). The exchange position PH1 is a position where the support shaft 29 can move along the second guide rails 38, 39.

[0124] <effect> Next, the operation of the recording device 10 will be described. When the recording device 10 is turned on or after an error is eliminated, the control unit 100 moves the recording unit 20 to the origin position PH0 in order to perform an origin return operation for the recording unit 20. The recording unit 20 moves upstream in the moving direction B by the guide roller 28 being guided by the first guide rail 37. In this process, the guide roller 28 is guided by the first guide rail 37. In addition, the support shaft 29 of the upstream guide roller 28 is guided by the guide surface 41 of the regulating unit 40. The support shaft 29 is first guided by the first guide surface 42, and then guided by the second guide surface 43 via the inclined surface 44. Therefore, the recording unit 20 is maintained in the normal position until the recording unit 20 reaches the origin position PH0.

[0125] Then, as shown by solid lines in FIG. 9, FIG. 11, and FIG. 16, the detected portion 85 of the recording unit 20 is detected by the first detection unit SE1. At this time, the recording unit 20 moves upstream in the moving direction B to the origin position PH0, and thus the tube 65 extending from the joint member 66 is curved significantly. That is, the direction in which the recording unit 20 moves upstream in the moving direction B is the direction in which the joint member 66 connected to the tip of the tube 65 approaches the base of the tube 65, so that the tube 65 is curved significantly as the recording unit 20 moves upstream in the moving direction B. However, although the guide roller 28 receives an external force including an upward force component as a reaction force from the tube 65 and abuts against the end portion near the connection portion P1 of the first guide rail 37, the support shaft 29 is regulated by the second guide surface 43 of the regulating unit 40, so that the guide roller 28 is prevented from being displaced upward along the second guide rail 39.

[0126] The detection position at this time is the assumed origin position PH0 of the recording unit 20. The control unit 100 resets a counter based on the detection signal input from the first detection unit SE1. After that, the counter counts, for example, pulse edges of pulses input from a rotary encoder (not shown) that detects the rotation of the first motor 31. The count value of this counter indicates the position on the movement path of the recording unit 20 with reference to the origin position PH0.

[0127] Therefore, the positional accuracy of the recording unit 20 is improved when it is subsequently positioned at various stop positions such as the recording position PH3, the capped position PH2, the wiped position, etc. For example, by positioning the recording unit 20 at the recording position PH3 with high positional accuracy, the gap between the ejection surface 20A of the recording head 20H and the medium M is set to an appropriate value. This improves the positional accuracy at which ink droplets ejected from the nozzles 20N of the recording head 20H land on the medium M, allowing high-quality printing to be performed on the medium M.

[0128] In addition, by arranging the recording unit 20 at the capped position with high positional accuracy, thickening and drying of ink in the nozzles 20N can be effectively suppressed. Furthermore, in cleaning performed under the capping state, air leakage (leak) is unlikely to occur at the seal portion between the cap 72 of the first maintenance unit 70 and the ejection surface 20A of the recording head 20H. For example, by introducing negative pressure into the space surrounded by the ejection surface 20A and the cap 72 by a suction pump of the maintenance device, cleaning can be effectively performed by forcibly discharging ink from the nozzles 20N of the recording head 20H. In addition, by arranging the recording unit 20 at the wiped position with high positional accuracy, the ejection surface 20A can be wiped with high wiping accuracy by a wiper after cleaning or printing. Less ink is left behind on the ejection surface 20A. For example, if residual ink remains on the ejection surface 20A, the ink droplets ejected from the nozzle 20N may interfere with the ink adhering to the ejection surface 20A, causing the ink droplets to shift in flight direction, resulting in a decrease in the landing position; however, ejection defects caused by this type of cause can also be reduced.

[0129] Therefore, according to this embodiment, the following effects can be obtained. (1) The moving device 30 includes a detection unit SE1 that detects an origin position PH0 of the recording unit 20, which is an example of a moving body that can move along the moving direction B, and a guiding unit 36 ​​that guides a guided unit 27 of the recording unit 20. The guided unit 27 has a guide roller 28 and a support shaft 29 whose length along the moving direction B is shorter than that of the guide roller 28. The guiding unit 36 ​​has a first guide rail 37 that guides the guide roller 28 along the moving direction B, second guide rails 38, 39 that are connected to the first guide rail 37 and guide the guide roller 28 along a transverse direction that intersects with the moving direction B, and a regulating unit 40 that regulates displacement of the support shaft 29 in the transverse direction and does not regulate the guide roller 28. The detection unit SE1 detects the position of the recording unit 20 when at least a portion of the guide roller 28 is located at the connection portion P1 of the first guide rail 37 and the second guide rails 38, 39 and the support shaft 29 is regulated by the regulating unit 40 as the origin position PH0.

[0130] When the guided part 27 is on the connection part P1, if the origin position PH0 is to be detected, there is a risk that the guided part 27 may move along the second guide rails 38, 39 due to an external force. However, according to this configuration, such movement is restricted by the restricting part 40, so that the detection accuracy of the origin position PH0 can be suppressed from decreasing. In addition, since the restricting part 40 does not restrict the guide roller 28, the support shaft 29 can move along the second guide rails 38, 39 with a minimum movement required to remove the support shaft 29 from the restricting part 40. If the problem is to be solved with only one guided part 27 and the first guide rail 37, it is necessary to detect the origin position PH0 at a position where the entire guided part 27 does not come into contact with the connection part P1. In other words, it is necessary to separate the position of the guided part 27 and the position of the connection part P1 when detecting the origin, which leads to an increase in the size of the moving area and therefore the size of the device.

[0131] (2) When the guide portion 36 is viewed from a direction (X direction) intersecting the movement direction B and the intersecting direction -Z, the support shaft 29 is located inside the outer peripheral contour line of the guide roller 28, and the restricting portion 40 overlaps with the second guide rail 39. With this configuration, the support shaft 29 is located inside the outer peripheral contour line of the guide roller 28, and the restricting portion 40 and the second guide rail 39 overlap, so that the amount of protrusion of the guide roller 28 from the restricting portion 40 when restricted by the restricting portion 40 can be reduced. Therefore, the detection position and the connection portion P1 can be brought closer to each other, and the size of the device can be reduced.

[0132] 19, when the recording unit 20 is at the origin position PH0, the regulating unit 40 overlaps the guide roller 28 when viewed from the direction (X direction) intersecting with the movement direction B and the intersecting direction (-Z direction). According to this configuration, the regulating unit 40 overlaps the guide roller 28, so that the rotation of the recording unit 20 at the origin position PH0 can be regulated and the movement of the recording unit 20 in the width direction can be regulated. For example, interference such as inappropriate contact or collision between the detection unit SE1 and the detected unit 85 can be avoided.

[0133] (4) The regulating portion 40 has a third guide portion that guides the spindle 29 along the movement direction B and does not guide the guide roller 28. According to this configuration, by guiding the spindle 29 along the third guide portion and then regulating the spindle 29, it is possible to regulate the spindle 29 more smoothly than in a configuration without the third guide portion.

[0134] (5) The first guided part is a rotating body (guide roller 28), and the second guided part is the rotating shaft or support shaft 29 of the rotating body. With this configuration, by making the first guided part a rotating body, it is possible to improve the sliding performance with the guide part 36. And by using the support shaft or rotating shaft of the rotating body as the second guided part, it is not necessary to provide a dedicated configuration, and therefore it can be easily realized.

[0135] (6) When viewed in the intersecting direction (+Z direction), the position of the recording unit 20 when the regulating unit 40 overlaps with the center of rotation C of the guide roller 28, which is a rotating body, is detected as the origin position PH0. According to this configuration, by regulating the center of rotation C of the guide roller 28, i.e., the central portion of the support shaft 29, with the regulating unit 40, it is possible to more reliably regulate the movement of the guide roller 28 in the direction along the second guide rails 38, 39.

[0136] (7) The detection unit SE1 detects the position of the recording unit 20 as the origin position PH0 when the center of rotation C of the rotating body (guide roller 28) is located at the connection part P1 of the first guide rail 37 and the second guide rails 38, 39. According to this configuration, if the center of rotation C of the guide roller 28, which is the rotating body, i.e., the central part of the guide roller 28, is located at the connection part P1, the size of the device can be suppressed, but if no measures are taken, the guide roller 28 is likely to move along the second guide rails 38, 39 due to external forces. However, since the regulating unit 40 is provided, such movement of the guide roller 28 can be suppressed, and a decrease in the detection accuracy of the origin position PH0 can be suppressed.

[0137] (8) The second guide rails 38, 39 guide the guide roller 28 when attaching or detaching the recording unit 20, which is an example of a movable body. With this configuration, the recording unit 20 can be attached or detached in a direction different from the moving direction B. Since the origin position PH0 and the replacement position PH1 can be brought closer to each other, the device can be prevented from becoming larger and the detection accuracy of the origin position PH0 can be prevented from decreasing.

[0138] (9) The recording device 10 includes a moving device 30 and a recording unit 20 that is a moving body and records on a medium M. According to this configuration, by moving the recording unit 20 in the recording device 10, it is possible to suppress an increase in size of the device and a decrease in the detection accuracy of the origin position PH0.

[0139] (10) The recording unit 20 can move between a recording position PH3 where recording is performed on the medium M, and an origin position PH0 that is retracted from the recording position PH3. With this configuration, the origin position PH0 is detected at the retracted position, so that the positional accuracy of the recording position PH3 can be improved. Since the moving device 30 is as described in (1) above, the decrease in the detection accuracy of the origin position PH0 is suppressed, which in turn leads to improved recording accuracy.

[0140] (11) The recording unit 20 can be moved to an exchange position PH1 further retracted from the origin position PH0. The exchange position PH1 is a position where the support shaft 29 can move along the second guide rails 38, 39. With this configuration, the recording unit 20 can be easily replaced by moving to the exchange position PH1. Since the moving device 30 has the configuration described in (1) above, the exchange position PH1 and the origin position PH0 can be brought closer to each other, which prevents the recording device 10 from becoming larger.

[0141] (12) The recording device 10 further includes a tube 65 having one end connected to the recording unit 20 and capable of forming a curved portion 65C. The recording unit 20 performs recording on the medium M by discharging liquid onto the medium M. With this configuration, since the tube 65 is connected to the recording unit 20, a reaction force is applied to the recording unit 20 when the tube 65 is curved. At this time, there is a risk that the guided portion 27 will move along the second guide rails 38, 39 due to the force from the tube 65, but since the moving device 30 has the configuration described in (1) above, the movement of the guided portion 27 is restricted.

[0142] (13) The recording device 10 further includes a mounting section 61 to which a liquid storage section 90 that stores liquid to be discharged onto the medium M can be detachably attached. The other end of the tube 65 is connected to the mounting section 61. The origin position PH0 is located between the mounting section 61 and the recording position PH3. According to this configuration, the other end position of the tube 65 is fixed at the mounting section 61, and one end moves with the movement of the recording section 20. Since the origin position PH0 is between the mounting section 61 and the recording position PH3, the tube 65 is curved at least when the recording section 20 is at the origin position PH0, and a reaction force from the tube 65 is applied to the recording section 20. At this time, there is a risk that the guided section 27 will move along the second guide rails 38, 39 due to the reaction force from the tube 65, but since the moving device 30 has the configuration described in (1) above, the movement is restricted.

[0143] (14) The recording device 10 further includes a tube 65 having one end connected to the recording unit 20 and capable of forming a curved portion 65C. The recording unit 20 performs recording on the medium M by discharging liquid onto the medium M. The degree of curvature of the tube 65 when the recording unit 20 is at the origin position PH0 (FIG. 8) is greater than the degree of curvature of the tube 65 when the recording unit 20 is at the recording position PH3 (FIG. 7). According to this configuration, the tube 65 is connected to the recording unit 20, so that a force from the tube 65 is applied to the recording unit 20. Since the curvature is large when the recording unit 20 is at the origin position PH0, the force from the tube 65 is large, and there is a risk that the guided portion 27 will move along the second guide rails 38 and 39. However, since the moving device 30 has the configuration described in (1) above, the movement of the guided portion 27 is restricted. Note that "large degree of curvature" is almost synonymous with "small radius of curvature."

[0144] (15) The recording unit 20 has a discharge surface 20A on which discharge ports 20P for discharging liquid are formed, the discharge surface 20A being perpendicular to the moving direction B and intersecting with the horizontal and vertical directions Z. One end of the tube 65 is connected to a top surface 20T that is a surface that intersects with the discharge surface 20A of the recording unit 20 along the top surface 20T that is an intersecting surface. A first angle α that is an angle between the top surface 20T that is an intersecting surface and the horizontal plane HP is smaller than a second angle β that is an angle between the discharge surface 20A and the horizontal plane HP.

[0145] According to this configuration, in order to prevent the tube 65 from kinking (bending), a certain radius of curvature or more is necessary. The first angle α, which is the angle between the upper surface 20T, which is the intersecting surface, and the horizontal plane HP, is smaller than the second angle β, which is the angle between the ejection surface 20A and the horizontal plane HP, that is, the ejection surface 20A is greatly inclined with respect to the horizontal plane HP. In such a case, if one end of the tube 65 is connected to the rear surface 20B, which is the opposite surface to the ejection surface 20A, the radius of curvature may become too small. Therefore, by connecting one end of the tube 65 to the upper surface 20T, which is the intersecting surface, along the upper surface 20T, the tube 65 can be easily routed. In addition, by attaching the tube 65 to the upper surface 20T, which is the intersecting surface of the recording unit 20, the device can be made smaller in the width direction Y than by attaching the tube 65 to the rear surface 20B, which is the opposite surface to the ejection surface 20A.

[0146] (16) The upper surface 20T, which is the intersecting surface, is the surface in the direction (-Z direction) in which the recording unit 20 is removed along the second guide rails 38, 39. With this configuration, the reaction force of the tube 65 is applied in the direction in which the recording unit 20 is removed, making it more likely that the guided portion 27 will move along the second guide rails 38, 39. However, since the recording device 10 has the configuration described in (1) above, the movement of the guided portion 27 along the second guide rails 38, 39 is restricted.

[0147] (17) On the upper surface 20T, which is an intersecting surface of the recording unit 20, the position where one end of the tube 65 is connected is located in a direction toward the origin position PH0 rather than the center of the upper surface 20T in the moving direction B. With this configuration, the tube 65 is connected to the upper side of the intersecting surfaces, so that the reaction force of the tube 65 is likely to be large and the reaction force is applied in a direction to remove the recording unit 20, so that the guided portion 27 is more likely to move along the second guide rails 38, 39. However, since the moving device 30 has the configuration described in (1) above, the movement of the guided portion 27 along the second guide rails 38, 39 is restricted.

[0148] The above embodiment can be modified to the following modified examples. Further modified examples can be appropriately combined with the above embodiment and the following modified examples, or further modified examples can be appropriately combined with each other.

[0149] The origin position PH0 and the replacement position PH1 may be the same position. For example, the operator may move the recording unit 20, which is at the replacement position PH1, which is the same position as the origin position PH0, slightly upstream in the movement direction B (toward the -B direction) and then remove it in the intersecting direction Z. Note that the replacement position PH1 here is the position to which the control unit 100 moves the recording unit 20 when the operator issues an instruction to replace the recording unit to the control unit 100 by operating the operation unit 13.

[0150] The moving body is not limited to the recording unit 20, and may be a maintenance unit (maintenance unit). For example, the moving body may be the first maintenance unit 70 (cap unit) or the second maintenance unit (wiper unit). Furthermore, the moving body may be something other than the recording unit 20, the first maintenance unit 70, and the second maintenance unit.

[0151] The guided portion 27 is not limited to a configuration in which the first guided portion is a rotating body (guide roller 28) and a support shaft 29 or a rotating shaft that supports the rotating body. A configuration in which a bearing is interposed between the rotating body (roller, etc.) and the support shaft, or between the main body of the moving body and the rotating shaft, may or may not be interposed. The rotating body may also be a bearing.

[0152] The first guided part is not limited to a rotating body. In a configuration in which the first guided part is not a rotating body, it may be a protrusion provided on the moving body for exclusive use as a guided part. An example of a non-rotatable protrusion is a cylindrical or polygonal rod. For example, the guided part may be a rod having a first rod part as the first guided part and a second rod part as the second guided part having a length in the moving direction smaller than that of the first rod part.

[0153] As in the above embodiment, there may be other guided portions 27 (downstream guided portions 27) that are not restricted by the restricting portion 40, or all guided portions 27 may be restricted by the restricting portion 40. For example, in the above embodiment, both the upstream and downstream guided portions 27 may be restricted by the restricting portion 40. Also, as in the above embodiment, only one of the guided portions 27 provided on both sides of the moving body (e.g., the recording portion 20) may be restricted by the restricting portion 40, or only some of the guided portions on the upstream side in the moving direction of the guided portions 27 on both sides may be restricted by the restricting portions 40 on both sides.

[0154] The guide portion 36 may not be in the form of a guide rail, but may be in the form of a guide groove or a long hole. The first guide rail 37, which is an example of the first guide portion, may be in the form of a guide rail, a guide groove, a long hole, etc. Furthermore, the second guide rails 38, 39, which are examples of the second guide portion, may be in the form of a guide rail, a guide groove, a long hole, etc.

[0155] The length of the second guide portion guided in the transverse direction may be very short. For example, it may be a replacement hole that opens in the first guide rail 37 to allow the roller to move in the transverse direction Z. In this case, the second guide portion may be formed by the inner wall surface of a hole that opens in the first guide rail 37, and may guide the movable body in the transverse direction so that it can be detached.

[0156] When the first guided part is a rotating body, it is not limited to a cylindrical roller such as the guide roller 28, but may be, for example, a roller having a truncated cone shape. In this case, the second guided part may be a part of the truncated cone roller with a smaller diameter. When the first guided part is a roller having a truncated cone shape, the contour line of the tapered surface when viewed from the axial direction (X direction) is not strictly defined as one, as it changes depending on the axial position. However, if the contour line is defined as the outer circumferential contour line of a projection figure projected in the axial direction, it is defined as one. In other words, the position of the support shaft 29 or the rotation axis, which is the second guided part when viewed from the axial direction, is defined.

[0157] When the first guided part is a rotating body, it is not limited to a roller such as the guide roller 28, but may be a rotating body such as a ball. In this case, it is sufficient that the ball is rotatably supported by the support part, which is the second guided part, and the length of the support part in the moving direction is smaller than the diameter of the ball.

[0158] If the first guided part is not a rotating body, the second guided part is not limited to a configuration in which it overlaps with the first guided part at the center along the moving direction B, and the second guided part may overlap with the first guided part at a position closer to either side of the moving direction B than the center.

[0159] The tubes 65 may include both the supply flow path 65A and the return flow path 65B, may be configured as only a supply flow path, or may be configured as including a waste liquid flow path. In these cases, the greater the number of tubes 65, the greater the force that the moving body receives from the tubes 65.

[0160] The force is not limited to that of the tube 65, and can be applied as long as the moment force is applied in the direction in which the moving body is guided by the second guide section. For example, the moving body may be configured to have no tube connected, but a power cable connected. In this case, the second guided section may be restricted by a restricting section to prevent the moving body from displacing in the intersecting direction along the first guide section due to the force received from the power cable at the origin position.

[0161] The moving body is not limited to the recording unit 20. The moving body may be, for example, a movable cap unit or a movable wiping unit. For example, as shown in FIG. 7, a moving device 73 in which the first maintenance unit 70 is a moving body has a guide rail 77 as an example of a first guide unit constituting a guide unit, and a hole opening in the guide rail 77 as an example of a second guide unit. For example, the position of a guide roller 78 shown in FIG. 8 is a retracted position PC1 that also serves as the origin position. When the first maintenance unit 70 is in the origin position, the guide roller 78 is located near the opening. The moving device 73 includes a regulating unit 47 that regulates the support shaft or rotation shaft of the guide roller 78 when the first maintenance unit 70 is in the origin position, thereby regulating the displacement of the guide roller in a cross direction (attachment / detachment direction) that is a direction that crosses the guide rail 77.

[0162] The number of second guiding parts may be less than the number of guided parts. For example, in the above embodiment, the two guide rollers 28 may be attached and detached via a common second guiding part (e.g., a hole). For example, the worker removes one of the two guide rollers along the second guiding part, then moves the movable body until the remaining roller is located at the connection part between the first guiding part and the second guiding part, and then removes the remaining roller along the second guiding part.

[0163] In the above embodiment, the recording unit 20 moves twice as much as the base member 34 via the base member 34, but this is not limited to the above. In other words, the pinion 32 may be configured to mesh with a rack provided on the recording unit 20, so that the rotation amount of the pinion 32 and the movement amount of the recording unit 20 match.

[0164] The medium M is not limited to paper, but may be board paper, a synthetic resin film, a laminate medium, or the like. The recording device 10 is not limited to an inkjet printing device (printer) that prints on paper, but may be a textile printing device. The recording device 10 may be a dot-matrix impact printer or a laser printer.

[0165] The moving device 30 may be applied to devices other than the recording device 10. For example, in a reading device (e.g., a scanner), a moving device with a reading unit as a moving body may be applied. In this case, the second guided portion (e.g., a support shaft or a rotating shaft) is regulated by the regulating portion 40 against the reaction force received from the power supply cable connected to the reading unit, thereby improving the detection accuracy of a detecting portion (e.g., an optical sensor) that detects the reading unit at the origin position PH0. Furthermore, the moving device may be applied to devices other than a recording device and a reading device.

[0166] The technical concepts and effects obtained from the above-described embodiment and modified examples will be described below. (A) A moving device includes a detection unit that detects an origin position of a moving body that can move along a moving direction, and a guiding unit that guides a guided part of the moving body, the guided part having a first guided part and a second guided part whose length along the moving direction is shorter than that of the first guided part, the guiding unit having a first guiding part that guides the first guided part along the moving direction, a second guiding part connected to the first guiding part and guiding the first guided part along a cross direction that crosses the moving direction, and a regulating part that regulates displacement of the second guided part in the cross direction and does not regulate the first guided part, and the detection unit detects the position of the moving body when at least a part of the first guided part is located at the connection part of the first guiding part and the second guiding part and the second guided part is regulated by the regulating part as the origin position.

[0167] When the connecting portion has a guided portion, there is a risk that the guided portion may move along the second guide portion due to an external force when detecting the origin position. However, according to this configuration, the restriction portion restricts such movement, thereby suppressing a decrease in the detection accuracy of the origin position. In addition, since the restriction portion does not restrict the first guided portion, the second guided portion can be moved along the second guide portion with a minimum movement required to remove it from the restriction portion. If the problem is to be solved with only one guided portion and the first guiding portion, it is necessary to detect the origin position at a position where the entire guided portion is not placed on the connecting portion. In other words, it is necessary to separate the position of the guided portion and the position of the connecting portion when detecting the origin, which leads to an increase in the size of the movement area and, ultimately, the size of the device.

[0168] (B) In the moving device described in (A) above, when the guiding portion is viewed from a direction intersecting the moving direction and the intersecting direction, the second guided portion may be located inside the outer peripheral contour line of the first guided portion, and the regulating portion may overlap the second guiding portion.

[0169] According to this configuration, the second guided portion is located inside the outer circumferential contour of the first guided portion, and the restricting portion and the second guiding portion overlap, so that the amount of protrusion of the first guided portion from the restricting portion when restricted by the restricting portion can be reduced. Therefore, the detection position and the connection portion can be brought closer to each other, and the size of the device can be reduced.

[0170] (C) In the moving device described in (A) or (B) above, when the moving body is in the origin position, the regulating portion may overlap the first guided portion when viewed from a direction intersecting the moving direction and the intersecting direction.

[0171] According to this configuration, the restricting portion overlaps with the first guided portion, so that the rotation of the movable body at the origin position can be restricted, and the movement of the movable body in the width direction (the axial direction of the first guided portion) can be restricted. For example, interference between the detecting portion and the detected portion can be avoided.

[0172] (D) In ​​the movement device described in any one of (A) to (C) above, the regulating portion may have a third guiding portion that guides the second guided portion along the movement direction and does not guide the first guided portion. According to this configuration, by guiding the second guided portion along the third guiding portion and then regulating the second guided portion, the second guided portion can be regulated more smoothly than in a configuration without the third guiding portion.

[0173] (E) In the moving device described in any one of (A) to (D) above, the first guided part may be a rotating body, and the second guided part may be a rotation shaft or a support shaft of the rotating body. According to this configuration, by making the first guided part a rotating body, it is possible to improve the sliding property with the guiding part. And by using the rotation shaft of the rotating body as the second guided part, it is possible to easily realize it since there is no need to provide a dedicated configuration.

[0174] (F) In the moving device described in (E) above, the position of the moving body when the regulating part overlaps with the center of rotation of the rotating body as viewed in the intersecting direction may be detected as the origin position. With this configuration, the center of rotation of the rotating body, i.e., the central part of the second guided part, is regulated by the regulating part, so that the movement in the direction along the second guiding part can be more reliably regulated.

[0175] (G) In the moving device described in (E) or (F) above, the detection unit may detect the position of the moving body when the center of rotation of the rotating body is located at the connection part of the first guide part and the second guide part as the origin position. According to this configuration, if the center of rotation of the rotating body, i.e., the central part of the rotating body, is located at the connection part, the size of the device can be suppressed, but if no measures are taken, the rotating body is likely to move along the second guide part due to an external force. However, since there is a regulating unit, such movement can be suppressed, and a decrease in detection accuracy of the origin position can be suppressed.

[0176] (H) In the moving device described in any one of (A) to (G) above, the second guiding portion may guide the first guided portion when attaching or detaching the moving body. With this configuration, the moving body can be attached or detached in a direction different from the moving direction. Since the origin position and the replacement position can be brought closer to each other, the size of the device can be prevented from increasing and the detection accuracy of the origin position can be prevented from decreasing.

[0177] (I) A recording device includes the moving device according to any one of (A) to (G) above, and a recording unit that is the moving body and records on a medium. With this configuration, the recording unit is moved in the recording device, which can suppress an increase in size of the device and a decrease in the detection accuracy of the origin position.

[0178] (J) In the recording device described in (I) above, the recording unit may be movable between a recording position where recording is performed on a medium and the origin position where the recording unit is retracted from the recording position. With this configuration, the positional accuracy of the recording position can be improved by detecting the origin position at the position where the recording unit is retracted. Suppressing the decrease in the detection accuracy of the origin position also leads to improved recording accuracy.

[0179] (K) In the recording device described in (I) or (J) above, the recording unit may be movable to an exchange position further retracted from the origin position, and the exchange position may be a position where the second guided portion can move along the second guiding portion. With this configuration, the recording unit can be easily replaced by moving to the exchange position. By using a moving device having the configuration described in (A) above, the exchange position and the origin position can be brought closer to each other, thereby preventing the recording device from becoming larger.

[0180] (L) The recording device according to any one of (I) to (K) above may further include a tube having one end connected to the recording unit and capable of forming a curved portion, and the recording unit may perform recording on the medium by ejecting liquid onto the medium. According to this configuration, since the tube is connected to the recording unit, a reaction force is applied to the recording unit when the tube is curved. At this time, there is a risk that the guided portion will move along the second guiding portion due to the force from the tube, but since the moving device has the configuration described in (A) above, the movement is restricted.

[0181] (M) In the recording device according to any one of (I) to (L) above, a liquid storage unit that stores liquid to be ejected onto a medium may further include a removable mounting unit, the other end of the tube may be connected to the mounting unit, and the origin position may be located between the mounting unit and the recording position. According to this configuration, the other end of the tube is fixed to the mounting unit, and one end moves with the movement of the recording unit. Since the origin position is between the mounting unit and the recording position, the tube is curved at least when the recording unit is at the origin position, and a reaction force from the tube is applied to the recording unit. At this time, there is a risk that the guided portion will move along the second guiding portion due to the reaction force from the tube, but since the moving device has the configuration described in (A) above, the movement of the guided portion is restricted.

[0182] (N) In a recording device described in any one of (I) to (M) above, the recording device may further include a tube having one end connected to the recording unit and capable of forming a curved portion, the recording unit records on a medium by ejecting liquid onto the medium, and the degree of curvature of the tube when the recording unit is in the origin position may be greater than the degree of curvature of the tube when the recording unit is in the recording position.

[0183] According to this configuration, since the tube is connected to the recording unit, a force from the tube is applied to the recording unit. Since the recording unit is at the origin position, the force from the tube is large, and there is a risk that the guided unit will move along the second guiding unit. However, since the moving device has the configuration described in (A) above, the movement of the guided unit is restricted. Note that "large curvature" is almost synonymous with a small radius of curvature.

[0184] (O) In the recording device described in any one of (I) to (N) above, the recording unit has an ejection surface on which an ejection port for ejecting liquid is formed, the ejection surface is perpendicular to the movement direction and intersects with the horizontal and vertical directions, the one end of the tube is connected to a plane that intersects with the ejection surface of the recording unit along the intersecting plane, and the angle between the intersecting plane and a horizontal plane may be smaller than the angle between the ejection surface and the horizontal plane.

[0185] According to this configuration, a certain radius of curvature is necessary to avoid kinking (bending) of the tube, but if the first angle between the intersecting surface and the horizontal plane is smaller than the second angle between the ejection surface and the horizontal plane, that is, if the ejection surface is significantly inclined with respect to the horizontal plane, connecting one end of the tube to the surface opposite the ejection surface (rear surface) may cause the radius of curvature to become too small. Therefore, by connecting the tube along the surface that intersects with the intersecting surface (top surface), it is possible to easily route the tube.

[0186] (P) In the recording device described in (O) above, the intersecting surface may be a surface in a direction in which the recording unit is removed along the second guide portion. With this configuration, the reaction force of the tube is applied in the direction of removing the recording section, making it more likely that the guided section will move along the second guiding section; however, because the moving device has the configuration described in (A) above, the movement of the guided section is regulated.

[0187] (Q) In the recording device described in (O) or (P) above, the position at which the one end of the tube is connected on the intersecting surface may be located in a direction toward the origin position of the movement direction rather than the center of the intersecting surface.

[0188] According to this configuration, since the tube is connected to the upper side of the intersecting surface, the reaction force of the tube is likely to be large, and since the reaction force is applied in the direction of removing the recording unit, the guided part is more likely to move along the second guiding part. However, since the moving device has the configuration described in (A) above, the movement of the guided part is restricted. [Explanation of symbols]

[0189] 10...recording device, 11...device body, 11A...housing, 12...reading unit, 13...operation unit, 14...front surface, 15...rear surface, 16...first side, 17...second side, 17T...feed tray, 18...cassette, 19...loading unit, 19A...ejection tray, 19B...loading surface, 19C...alignment plate, 19D...partition plate, 20...recording unit as an example of a moving body, 20H...recording head, 20A...ejection surface, 20B...rear surface, 20N...nozzle, 20P...ejection port, 20T...upper surface as an example of an intersecting surface, 21...pickup roller, 22...transport roller 1, 23... conveying roller pair, 24... flap, 25... conveying unit, 25A... pulley, 25B... conveying belt, 26... conveying roller pair, 27... guided portion, 28... guide roller as an example of a first guided portion, 29... spindle as an example of a second guided portion, 29A... recess, 30... moving device (first moving device), 31... first motor, 32... pinion, 33... rack, 34... slider, 35... roller, 36... guide portion, 36A... guide rail, 37... first guide rail as an example of a first guide portion, 38,39... second guide rail as an example of a second guide portion, 40... regulating portion, 41... guide surface as an example of a third guide portion, 42... first guide surface, 43... second guide surface, 44... inclined surface, 45... regulating portion, 47... regulating portion, 50... motion mechanism, 51... frame body, 52... first side frame, 52A... support portion, 53... second side frame, 54... connecting frame, 60... liquid supply mechanism, 60A... connecting pipe portion, 6 0B...connection tube section, 61...mounting section, 61A...operation section, 62...liquid supply section, 63...waste liquid storage section, 65...tube, 65A...supply flow path, 65B...return flow path, 65C...curved section, 65D...clip member, 70...maintenance section as an example of a second moving body, 71...cap section, 72...cap, 73...second moving device, 74...second motor, 75...pinion, 76...rack, 77...guide rail, 7 8...guide roller, 80...main body, 81...light emitting section, 82...light receiving section, 83...gap, 85...detected section, 90...liquid container, 100...control section, S1...discharge space, A1...flow path space, T...transport path, T1...transport path, T2...transport path, T3...transport path, T4...transport path, T5...reversal path, A...second movement direction (movement direction of the maintenance section), B...first movement direction (movement direction of the recording section), M...medium, PH0...original Point position, PH1...exchange position, PH2...capped position, PH3...recording position, PC1...retraction position, PC2...cap position, SE1...first detection unit as an example of a detection unit, SE2...second detection unit as an example of a detection unit, P1...connection unit, LA...optical axis, C...rotation center, HP...horizontal plane, α...first angle, β...second angle, X...depth direction (width direction of the medium), Y...width direction of the device, Z...vertical direction (cross direction).

Claims

1. A detection unit that detects an origin position of a movable body that is movable along a movement direction; a guide portion that guides the guided portion of the moving body, The guided portion is a first guided part; a second guided portion having a length along the moving direction smaller than that of the first guided portion, The guide portion is a first guiding portion that guides the first guided portion along the moving direction; a second guiding portion connected to the first guiding portion and guiding the first guided portion along a cross direction crossing the moving direction; a restricting portion that restricts displacement of the second guided portion in the intersecting direction and does not restrict displacement of the first guided portion, A moving device characterized in that the detection unit detects the position of the moving body when at least a portion of the first guided portion is located at the connection portion of the first guiding portion and the second guiding portion and the second guided portion is regulated by the regulating portion as the origin position.

2. When the guide portion is viewed from a direction intersecting the moving direction and the intersecting direction, the second guided portion is located inside an outer circumferential contour line of the first guided portion, The moving device according to claim 1 , wherein the restricting portion overlaps with the second guide portion.

3. When the movable body is in the origin position, the restricting portion is viewed from a direction intersecting the moving direction and the intersecting direction, The moving device according to claim 2 , wherein the restricting portion overlaps the first guided portion.

4. 2 . The moving device according to claim 1 , wherein the regulating portion has a third guiding portion that guides the second guided portion along the moving direction and does not guide the first guided portion.

5. the first guided portion is a rotating body, 2. The moving device according to claim 1, wherein the second guided portion is a rotation shaft or a support shaft of the rotating body.

6. 6. The moving device according to claim 5, wherein a position of the moving body when the regulating portion overlaps with a center of rotation of the rotating body as viewed in the intersecting direction is detected as the origin position.

7. The moving device according to claim 6, wherein the detection unit detects the position of the moving body when the center of rotation of the rotating body is located at the connection portion of the first guide unit and the second guide unit as the origin position.

8. 8. The moving device according to claim 1, wherein the second guiding portion guides the first guided portion when the moving body is attached or detached.

9. A moving device according to any one of claims 1 to 7; The recording device is the moving body, and further comprises a recording unit that performs recording on a medium.

10. The recording unit is a recording position for recording on the medium; the origin position retracted from the recording position; 10. The recording apparatus according to claim 9, wherein the recording apparatus is movable.

11. the recording unit is movable to a replacement position further retreated from the original position, 10. The recording apparatus according to claim 9, wherein the exchange position is a position where the second guided portion is movable along the second guiding portion.

12. The recording device further includes a tube having one end connected to the recording unit and capable of forming a curved portion, 11. The recording apparatus according to claim 10, wherein the recording unit performs recording on the medium by discharging a liquid onto the medium.

13. The ink ejection device further includes a mounting section to which a liquid storage section that stores liquid to be ejected onto a medium can be detachably attached, The other end of the tube is connected to the mounting portion, 13. The recording apparatus according to claim 12, wherein the origin position is located between the mounting portion and the recording position.

14. The recording device further includes a tube having one end connected to the recording unit and capable of forming a curved portion, the recording unit performs recording on a medium by ejecting a liquid onto the medium; 11. The recording apparatus according to claim 10, wherein the degree of curvature of the tube when the recording unit is in the origin position is greater than the degree of curvature of the tube when the recording unit is in the recording position.

15. the recording unit has an ejection surface on which ejection ports for ejecting liquid are formed, the ejection surface is perpendicular to the movement direction and intersects with a horizontal direction and a vertical direction, the one end of the tube is connected to a surface that intersects with the ejection surface of the recording unit along the intersecting surface, 13. The recording apparatus according to claim 12, wherein a first angle formed between the intersecting surface and a horizontal plane is smaller than a second angle formed between the ejection surface and a horizontal plane.

16. 16. The recording apparatus according to claim 15, wherein the intersecting surface is a surface in a direction in which the recording unit is removed along the second guide portion.

17. 16. The recording apparatus according to claim 15, wherein the position at which the one end of the tube is connected on the intersecting surface is located in a direction toward the origin position in the movement direction rather than a center of the intersecting surface.

Images