JP2021107287A - Recording device - Google Patents

Abstract

To provide a recording device that restricts floating up of a medium, thereby preventing the medium from contacting the recording part.SOLUTION: The recording device includes: a feeding part that feeds a medium M; a transporting part 40 that transports the fed medium M in a transporting direction Y0; a recording part that conducts the recording on the medium M transported by the transporting part 40; and a supporting member 50 that has a supporting surface that supports the medium M of the part that the recording part records. The recording device has a pressing member 81 that presses the medium M toward the supporting member 50 at a position upstream of the recording position of the recording part in the transporting direction Y0. The pressing member 81 is provided so as to be movable in the direction that intersects with the supporting surface.SELECTED DRAWING: Figure 14

Description

The present invention relates to a recording device including a transport section for transporting a medium, a support section for supporting the medium, and a recording head for recording on the medium supported by the support section.

For example, Patent Document 1 describes a transport unit that transports a medium in a transport direction along a transport path, a recording head that ejects a liquid such as ink from a nozzle to record an image on the transport medium, and a transport path. Discloses a recording device including a support member that supports a medium at a position facing the recording unit.

The transport unit includes a transport roller pair arranged upstream of the recording unit in the transport direction and a discharge roller pair arranged downstream of the recording unit in the transport direction. The support member can move from the first position to the second position far from the virtual plane including the nozzle surface from the first position. The support member includes a first contact member, a contact portion, and a first urging member. The first contact member is arranged between adjacent discharge rollers in the width direction. In the state where the support member is in the first position, the protruding end protruding into the transport path is located closer to the virtual plane including the nozzle surface of the recording head than the nip position where the discharge roller pair sandwiches the medium. The contact portion contacts the discharge roller shaft in a state where the support member is in the first position. The first urging member urges the support member toward the first position.

As the support member moves from the first position to the second position against the urging force of the first urging member, the relative positional relationship between the nip position and the protruding end of the first contact member changes. As a result, it is possible to impart a wave shape according to the rigidity of the medium. On the other hand, since the support member is positioned at the first position with respect to the discharge roller shaft, the nip position at the first position and the protruding end of the first contact member are accurately positioned.

Japanese Unexamined Patent Publication No. 2016-160025

However, in the recording device described in Patent Document 1, since the support member is a mechanism that moves up and down, there is a problem that the distance between the medium and the recording head is not stable and the recording quality may be deteriorated.

The recording device for solving the above problems is such that the recording device records on a feeding unit that feeds the medium, a transporting unit that transports the fed medium in the transport direction, and the medium that the transporting unit transports. A recording unit to be performed, a support member having a support surface for supporting the medium in the portion recorded by the recording unit, and a position upstream of the recording position of the recording unit in the transport direction toward the support member. A holding member for holding the medium is provided, and the holding member is movably provided in a direction intersecting the support surface.

The perspective view of the recording apparatus in 1st Embodiment. A perspective view showing a recording device with a cover open. The perspective view which shows the recording apparatus in the state which the housing is removed. The perspective view which shows a part of the recording apparatus in the state which the housing is removed. The perspective view which shows a part of the transport part. A side view showing a part of a transport unit and a recording unit. The plan view which shows a part of the transport part. A normal cross-sectional view showing a part of a transport portion. The perspective view which shows a part of the medium guide mechanism. An enlarged perspective view showing a part of the medium guide mechanism. The perspective view which shows the holding member. Side sectional view showing a medium guide mechanism and a holding member. The side view which shows a part of the holding member. A normal cross-sectional view illustrating the operation of the pressing member. The plan view which shows a part of the transport part which shows the process of inserting a disc tray in 2nd Embodiment. The perspective view which shows the holding member of 2nd Embodiment. The enlarged perspective view which shows the pressing head of a pressing member. FIG. 3 is a perspective view illustrating a problem of a holding member when a disc tray is inserted into the recording device of the first embodiment. The perspective view which shows the action of the holding member of 2nd Embodiment when a disc tray is inserted. The front view explaining the problem of the holding member of 1st Embodiment when a medium is skewed. The front view which shows the action of the holding member of 2nd Embodiment when a medium is skewed. The side view explaining the problem of the holding member of 1st Embodiment when a medium is reverse-conveyed at the time of double-sided recording. The side view which shows the action of the holding member of 2nd Embodiment when the medium is reverse-conveyed at the time of double-sided recording. A side sectional view showing a holding member in a modified example. A side sectional view showing a holding member in a modified example different from FIG. 24. The perspective view which shows the holding member in the modification example different from FIG.

(First Embodiment)
Hereinafter, the first embodiment of the recording device will be described with reference to the drawings. In FIG. 1, assuming that the recording device 11 is placed on a horizontal plane, three virtual axes orthogonal to each other are defined as an X-axis, a Y-axis, and a Z-axis. The X-axis is a virtual axis parallel to the scanning direction of the recording head, which will be described later, and the Y-axis is a virtual axis parallel to the transport direction of the medium at the time of recording. The Z axis is a virtual axis parallel to the vertical direction Z1. One direction parallel to the Y-axis refers to the transport direction of the medium at the recording position where the recording head records on the medium. The transport direction of the medium when the recording head 25 records on the medium is defined as the first transport direction Y1, and the direction opposite to the first transport direction Y1 is defined as the second transport direction Y2. On the Y-axis, the side of the recording device 11 on which the operation panel 15 described later is arranged is referred to as the front, and the side opposite to the front is also referred to as the rear. Further, the transport path to which the medium M is transported is not parallel to the Y axis in the entire area, and the transport direction Y0 changes according to the position of the medium M on the transport path.

<Configuration of recording device>
The recording device 11 shown in FIG. 1 is a serial recording type inkjet printer. As shown in FIG. 1, the recording device 11 includes a device main body 12 and a cover 13 provided on the upper portion of the device main body 12 so as to be openable and closable. The recording device 11 has a substantially rectangular parallelepiped shape as a whole.

The recording device 11 includes an operation panel 15 on the front surface. The operation panel 15 includes an operation unit including operation buttons and the like that are operated when giving various instructions to the recording device 11, and a display unit (all not shown) that displays various menus and the operating status of the recording device 11. Has. Further, a power button 16 is provided on the front surface of the apparatus main body 12. It is also possible to configure the display unit with a touch panel and configure the operation unit with an operation function operated by the touch panel.

Further, on the right side of the front portion of the apparatus main body 12, an accommodating portion 18 for accommodating at least one (six in the present embodiment) liquid supply source 17 (see FIG. 2) is provided. The accommodating portion 18 has at least one (six in this embodiment) window portion 19 corresponding to each liquid supply source 17. The window portion 19 is made of a transparent or translucent resin, and the user can visually recognize the liquid level of the liquid contained in the liquid supply source 17 through the window portion 19.

Further, a feeding cover 20 is provided on the upper rear side of the recording device 11 so as to be openable and closable. The feed cover 20 is opened and closed by rotating around the rear end. The feeding unit 21 is housed inside the feeding cover 20 at the closed position shown in FIG. 1 in the apparatus main body 12. The feeding unit 21 feeds a medium M such as paper. The feeding unit 21 has a feeding tray 22 (see FIG. 2) for mounting the medium M. The user places the medium M on the feed tray 22 (see FIG. 2) that is exposed when the feed cover 20 is in the open position.

A recording unit 23 for recording on the medium M fed from the feeding tray 22 is housed in the apparatus main body 12. The recording unit 23 is, for example, a serial recording method. The recording unit 23 of the serial recording system includes a carriage 24 capable of reciprocating in the scanning direction X, and a recording head 25 held under the carriage 24. The surface of the recording head 25 facing the medium M transported along the transport path is a nozzle surface (see FIG. 6) through which a plurality of nozzles (not shown) are opened. The liquid supply source 17 and the recording unit 23 are connected to each other through a liquid supply tube (not shown), and liquid is supplied from the liquid supply source 17 to the recording head 25 through the liquid supply tube.

The recording head 25 discharges the liquid from the plurality of nozzles toward the medium M while moving together with the carriage 24. By alternately repeating the recording operation in which the carriage 24 moves once and the recording head 25 records one pass and the transport operation in which the medium M is conveyed to the next recording position, characters or images are printed on the medium M. Is recorded. The recording unit 23 may use a line recording method. The recording unit 23 of the line recording system includes a recording head 25 including a line head having a plurality of nozzles capable of simultaneously ejecting liquid over the entire width of the medium having the maximum width. Since the liquid is discharged from the nozzle of the recording head 25 including the line head with the entire width of the medium M as the ejection target for the medium M conveyed at a constant speed, high-speed recording of an image or the like is realized.

Further, a discharge cover 26 is provided on the lower part of the front surface of the recording device 11 so as to be openable and closable. The discharge cover 26 rotates around the lower end. A stacker 27 (see FIG. 4) used for receiving the recorded medium M is housed in the back of the discharge cover 26 in the closed position shown in FIG. 1 in the apparatus main body 12. With the discharge cover 26 opened in the open position, the stacker 27 can be slid in the transport direction Y0 to extend to the receiving position where the medium M is received.

The recording device 11 includes a control unit 100 that controls various types of control. The control unit 100 controls the carriage 24 and the recording head 25, the transport control of the medium M, the display control of the operation panel 15, the power supply control, and the like.

Next, a detailed configuration inside the recording device 11 will be described with reference to FIGS. 2 and 3.
As shown in FIG. 2, a main frame 30 extends in the width direction X in the apparatus main body 12. The main frame 30 has a pair of guide rails 30A (see also FIG. 3) that guide the carriage 24. The pair of guide rails 30A extend parallel to each other along the scanning direction. The carriage 24 is supported by a pair of guide rails 30A so as to be movable in the scanning direction (width direction X) at two locations in the vertical direction Z1. The carriage 24 reciprocates in the scanning direction by being guided by the pair of guide rails 30A. A moving mechanism 31 for moving the carriage 24 in the scanning direction is provided between the main frame 30 and the carriage 24. The moving mechanism 31 is, for example, a belt drive system, and includes a carriage motor 32 which is a drive source of the carriage 24 and an endless timing belt 33 stretched along the scanning direction. The carriage 24 is fixed to a part of the timing belt 33. When the carriage motor 32 rotates in the forward and reverse directions, the carriage 24 reciprocates in the scanning direction via the timing belt 33.

Further, the main frame 30 is provided with a linear encoder 34 extending along the scanning direction. The linear encoder 34 includes a linear scale extending along the scanning direction and a sensor (not shown) attached to the carriage 24. The sensor detects a linear scale and outputs a pulse signal including a number of pulses proportional to the amount of movement of the carriage 24.

The accommodating portion 18 is provided with a supply cover 18a that opens and closes the upper portion thereof. In this example, the liquid supply source 17 is a tank in which the liquid is stored. When there is a liquid supply source 17 whose remaining amount is low through the window portion 19, the user opens the cover 13 and the supply cover 18a, and injects the liquid from the liquid bottle into the injection port (not shown) of the liquid supply source 17. The liquid supply source 17 is not limited to a liquid replenishment type tank in which the user replenishes the liquid from the liquid bottle, and may be a liquid pack (for example, an ink pack) or a liquid cartridge (for example, an ink cartridge) in which the liquid is stored. The liquid supply source 17 is an off-carriage type provided on the apparatus main body 12, but may be an on-carriage type mounted on the carriage 24.

As shown in FIG. 3, the feeding tray 22 on which the medium M is placed is provided with a pair of edge guides 22A. The medium M placed on the feed tray 22 is positioned in the width direction X by being sandwiched between the pair of edge guides 22A. The feeding unit 21 includes a feeding motor 35 as a drive source. The feeding unit 21 feeds the medium M placed on the feeding tray 22 in the first transport direction Y1 along the transport path. The first transport direction Y1 is the transport direction when recording on the medium M.

As shown in FIG. 3, the recording device 11 includes a transport unit 40 that transports the medium M fed from the feed unit 21 in the transport direction Y0. Further, the recording device 11 includes a support member 50 that supports the medium M of the portion recorded by the recording unit 23. The support member 50 is a long member extending in the width direction X, and has a length capable of supporting the entire width direction of the medium M having the maximum width. The recording unit 23 records on the portion of the conveyed medium M supported by the support member 50.

The recording device 11 includes a gap adjusting mechanism 37 that adjusts the gap between the recording unit 23 and the support member 50. The gap adjusting mechanism 37 is a mechanism for changing the height position of the recording head 25. The gap adjusting mechanism 37 adjusts the gap by changing the height position of the recording head 25. The control unit 100 controls the gap adjusting mechanism 37 and adjusts the gap according to the type of the medium M. When the medium M is, for example, paper, the type of the medium M includes plain paper (thin paper, thick paper), photo paper, envelopes, discs such as CDR (CD-Recordable), and the like. The medium M such as plain paper is a first medium having low rigidity, and the medium M such as photographic paper is a second medium having higher rigidity than the first medium.

The carriage 24 shown by the alternate long and short dash line in FIG. 3 is located at the home position HP, which is a standby position when recording is not performed. At a position adjacent to the support member 50 in the width direction X, a maintenance device 60 for maintaining the recording head 25 is arranged at a lower position facing the carriage 24 at the home position HP. The maintenance device 60 includes a cap 61 that caps the recording head 25 when the carriage 24 is at the home position HP, and a wiper 62 that wipes the nozzle surface of the recording head 25. By capping the recording head 25 with the cap 61, thickening and drying of a liquid such as ink in the nozzle of the recording head 25 are suppressed. If the liquid in the nozzle becomes thick, there are bubbles in the liquid in the nozzle, or the nozzle is blocked by foreign matter such as paper dust, the liquid cannot be discharged normally from the nozzle due to clogging of the nozzle. Occurs.

The maintenance device 60 cleans the nozzle of the recording head 25 in order to eliminate or prevent this type of ejection failure. The maintenance device 60 includes a suction pump 63 that communicates with the cap 61. The maintenance device 60 drives the suction pump 63 under a capping state in which the cap 61 contacts the nozzle surface of the recording head 25 in a state of surrounding the nozzle. When the suction pump 63 is driven, the liquid is forcibly sucked and discharged from the nozzle by the negative pressure introduced in the closed space between the nozzle surface and the cap 61. Foreign matter such as thickened liquid, air bubbles, and paper dust is forcibly sucked and discharged from the nozzle, so that the nozzle recovers from poor discharge.

Further, the recording unit moves to the home position HP periodically or irregularly during the recording operation of recording on the medium M, and ejects droplets unrelated to recording from all the nozzles toward the cap 61. Discharge (also referred to as "flushing") prevents ejection defects during recording. The liquid (waste liquid) discharged from the nozzle by cleaning and empty discharge is sent to the waste liquid tank 65 through the waste liquid tube 64 by driving the suction pump 63. The waste liquid tank 65 is located above the region downstream of the transport unit 40 in the transport direction Y0. When the user opens the cover 13, the waste liquid tank 65 is located on the front side, so that the user can replace the waste liquid tank 65 from the front side of the recording device 11.

As shown in FIGS. 4 to 6, the transport unit 40 includes a transport roller pair 41 arranged at a position on the upstream side of both sides sandwiching the support member 50 in the transport direction Y0, and a discharge unit arranged at a position on the downstream side. A pair of rollers 42 is provided. As shown in FIGS. 5 and 6, the transport roller pair 41 has a configuration in which the transport drive roller 410 and the driven roller 43 form a pair. Specifically, the transfer roller pair 41 is composed of a pair of a transfer drive roller 410 and a plurality of driven rollers 43 that come into contact with the transfer drive roller 410. The discharge roller pair 42 is composed of a plurality of discharge drive rollers 420 (see FIG. 6) and a plurality of driven rollers 44. The driven roller 44 is, for example, a star wheel having a plurality of teeth along its outer circumference.

As shown in FIGS. 4 and 5, the transport unit 40 includes a plate-shaped medium guide member 45 that supports the back surface of the fed medium M, and a medium guide mechanism 46 that is arranged above the medium guide member 45. To be equipped. As shown in FIG. 5, the medium guide mechanism 46 includes a guide member 47 as an example of a rotatable rotating member that guides the medium M along a transport path, and a downstream end portion of the guide member 47 in the transport direction Y0. It has a plurality of driven rollers 43 supported by the vehicle, and an urging member 48 that urges the guide member 47 in a direction in which the driven roller 43 approaches the transport drive roller 410.

As shown in FIG. 4, the recording device 11 has a transfer motor 71 that is a drive source of the transfer unit 40 and a power transmission mechanism 72 that transmits the power of the transfer motor 71 to the drive rollers 410 and 420 (see FIG. 6). Be prepared. The power transmission mechanism 72 includes a gear train that transmits the power of the transfer motor 71 to the transfer drive roller 410, a timing belt that transmits the rotation of the transfer drive roller 410 to the discharge drive roller 420, and the like. The recording device 11 is provided with a rotary encoder 74 that detects the rotation of the transport drive roller 410. The rotary encoder 74 includes a rotation scale 741 fixed to the end of the rotation shaft of the transport drive roller 410, and an optical sensor 742 that detects the rotation of the rotation scale 741. The rotary encoder 74 outputs a pulse signal including a number of pulses proportional to the amount of rotation of the transport drive roller 410.

As shown in FIG. 4, the stacker 27 has a square plate-shaped mounting portion 271. The stacker 27 moves between the retracted position shown in FIG. 4 and the receiving position slid downstream from the retracted position in the transport direction Y0. The discharge port 75 is opened above the stacker 27, and the medium M after recording is discharged from the discharge port 75. The recorded medium M discharged from the discharge port 75 is placed on the stacker 27 at the receiving position. The stacker 27 may be an electric type driven by the power of an electric motor, or may be a manual type that the user manually slides.

The recording device 11 of the present embodiment has a label recording function for recording on the label surface of a disc such as a CDR. When the disc is used as the medium M and the label is recorded on the label surface, the user sets the disc in a plate-shaped dedicated tray (not shown) and inserts the dedicated tray from the discharge port 75. The dedicated tray is nipped into the transport roller pair 41 and the discharge roller pair 42. As a result, the disc is conveyed to a recording position where recording by the recording unit 23 is possible. The recording unit 23 records an image or the like on the label surface of the disc.

As shown in FIGS. 5 and 6, the support member 50 has a first support portion 51 located at the upstream end portion in the transport direction Y0 and a main first support portion 51 located downstream of the first support portion 51 in the transport direction Y0. It includes two support portions 52 and a third support portion 53 located downstream of the second support portion 52 in the transport direction Y0. The first support portion 51 supports the medium M of the portion immediately after being sent out from the transport roller pair 41. The second support portion 52 is arranged in a region facing the moving region of the recording head 25. The second support portion 52 supports the medium M in the recording region where the liquid discharged from the nozzle is landed by the recording head 25. The first support portion 51 supports the medium M in a region located upstream of the recording region in the transport direction Y0. The third support unit 53 supports the medium M in the portion where the recording has been completed. The first support portion 51, the second support portion 52, and the third support portion 53 extend over a region slightly wider than the region in which the medium M having the maximum width is conveyed in the width direction X.

The first support portion 51 includes a plurality of first ribs 54 that project upward in a state of being arranged at intervals in the width direction X. The second support portion 52 includes a plurality of second ribs 55 that project upward in a state of being arranged at intervals in the width direction X. The third support portion 53 includes a plurality of third ribs 56 that project upward in a state of being arranged at intervals in the width direction X. The first rib 54, the second rib 55, and the third rib 56 are arranged at the same position in the width direction X. Therefore, the second rib 55 is located downstream of the first rib 54 in the transport direction Y0, and the second rib 55 is located upstream of the third rib 56 in the transport direction Y0. The second rib 55 is provided one extra on each side that is outside the range in which the first rib 54 is arranged. Therefore, the number of the second ribs 55 is two more than the number of the first ribs 54. The positions of the ribs 54 to 56 in the width direction X are set according to the width size of the medium M so that both ends of the medium M in the width direction X can be supported when the medium M of the specified size is supported. Has been done. Therefore, both ends of the medium M in the width direction X are supported by ribs 54 to 56 in the transport process for any size medium M as long as it has a specified size.

As shown in FIGS. 5 and 7, the second support portion 52 includes a substrate portion 57 on which one or two second ribs 55 project, and a liquid absorber 58 arranged so as to surround the substrate portion 57. Be prepared. The liquid absorber 58 is formed of a porous synthetic resin material and absorbs a liquid such as ink. When the medium M of the specified size is supported by the second rib 55, the liquid absorber 58 absorbs the liquid discharged from the nozzle of the recording head 25 so as to protrude outward from both ends of the medium M in the width direction X. It is possible to arrange the medium M at a position corresponding to the width size of the medium M. Therefore, when performing borderless recording in which an image is recorded on a medium M having a specified size that the recording device 11 can handle without creating a margin at the peripheral edge, the liquid protruding from both ends of the medium M in the width direction X is a liquid absorber. Absorbed by 58. That is, it is possible to prevent the liquid discharged outside the medium M from adhering to the second rib 55 during rimless recording. Therefore, it is possible to prevent the liquid adhering to the second rib 55 from being transferred to the back surface of the medium M being conveyed and contaminating the medium M with the liquid.

As shown in FIGS. 5 and 7, the guide member 47 is composed of a first guide member 47A and a second guide member 47B. In this example, the guide member 47 is composed of two first guide members 47A and two second guide members 47B. The two first guide members 47A are arranged on both sides in the width direction X, and the two second guide members 47B are arranged side by side between the two first guide members 47A in the width direction X. In the present embodiment, the two first guide members 47A are the same parts, and the parts are standardized. The number of parts constituting the guide member 47 is not limited to four, and may be an appropriate number.

As shown in FIGS. 5 and 7, a medium detector 76 for detecting the medium M is attached to the guide member 47 at the center of the width direction X. The medium detector 76 detects the presence or absence of the medium M at a position upstream of the transport roller pair 41 in the transport direction Y0.

As shown in FIGS. 6 and 7, a driven roller 49 that rotates when the medium M hits is provided at a position above the transport path between the moving area of the recording unit 23 and the discharge roller pair 42. There is. The driven roller 49 is made of, for example, a star wheel.

As shown in FIGS. 5 to 7, the medium guide mechanism 46 is provided with a plurality of pressing members 81 for pressing the medium M being conveyed toward the support member 50 at a plurality of positions spaced apart from each other in the width direction X. ing. As shown in FIG. 6, the pressing member 81 has a contact portion 815 that comes into contact with the medium M when pressing the medium M, and a support shaft that is a rotation fulcrum located upstream of the contact portion 815 in the transport direction Y0. It is equipped with 471. The pressing member 81 is rotatably provided in a predetermined angle range around the support shaft 471 in a state where the rear end portion is supported by the support shaft 471 of the guide member 47 constituting the medium guide mechanism 46. The pressing member 81 is provided so as to be movable in a direction intersecting the support surface 54A (see FIG. 13). The pressing member 81 is in a pressing direction in which the abutting portion 815 at the tip thereof can press the surface of the medium M being conveyed by the elastic member 83 (see FIGS. 9 and 12) constituting the urging mechanism 82. Being urged. The pressing direction PD in which the pressing member 81 of this example presses the medium M is a direction in which the medium M can be pressed against the supporting surface 54A of the supporting member 50. In FIG. 6, the pressing direction PD is a direction parallel to the tangent line of the arc locus at the intersection of the arc loci of the contact portion 815 centered on the support shaft 471 and intersecting the horizontal plane including the nip point N1 of the transport roller pair 41. Is. The pressing direction PD may be any direction in which the medium M being conveyed is pressed against the support surface 54A.

As shown in FIG. 6, the pressing member 81 has an abutting portion 815 at its tip that abuts on the surface of the medium M to be pressed. In the present embodiment, the contact portion 815 is located within a range that is upstream of the recording head 25 and downstream of the nip position N1 of the transport roller pair 41 in the transport direction Y0. That is, the pressing member 81 presses the surface of the medium M at a portion downstream of the nip position N1 of the transport roller pair 41 in the transport direction Y0 and before recording is performed. For example, when the recorded portion of the medium M is pressed, the ink is transferred to the pressing member, and the transferred ink adheres to the medium M and causes the image or the medium M to be soiled. On the other hand, in this example, since the pressing member 81 presses the surface of the portion of the medium M before recording, it is not transferred to the stain pressing member 81 such as ink when pressed, so that the medium M is soiled. No worries. As described above, the arrangement position condition of the pressing member 81 is that the pressing member 81 of the present embodiment is arranged at a position where the contact portion 815 can be positioned within the above range.

As shown in FIGS. 7 and 8, the pressing member 81 is arranged at a position where the contact portion 815 faces the concave region 59 between the ribs 54 in the width direction X of the supporting member 50. That is, the pressing member 81 is arranged at a position facing the concave region 59, which is not a rib 54, which is a convex portion of the support member 50 having a concave-convex shape in the width direction X, and the vertical direction Z1. Therefore, the pressing member 81 is adjacent in the width direction X. The rib 54 is located between the two mating contact portions 815. The plurality of pressing members 81 press the surface of the medium M at positions on both sides of the abutting portion 815 sandwiching the rib 54 in the width direction X, so that the medium M being conveyed has a wavy shape that undulates in the width direction X shown in FIG. Curve to.

Here, the force required to bend the medium M in a wavy shape can be small at a portion close to the side end portion in the width direction X, which is the free end of the medium M. On the other hand, in the central portion in the width direction X away from the free end of the medium M, a large force is required to bend the medium M. In other words, the central portion of the medium M in the width direction X is a position where it is difficult for the pressing member 81 to bend it. Further, as shown in FIG. 7, a medium detector 76 is arranged at the center of the guide member 47 in the width direction X. In the peripheral region of the medium detector 76, it is difficult to secure a space for arranging the pressing member 81. Therefore, in the present embodiment, the plurality of pressing members 81 are arranged in the region excluding the central portion of the medium guide mechanism 46 in the width direction X.

The pair of pressing members 81 located on the outermost side of the plurality of pressing members 81 in the width direction X press both ends of the medium M having the maximum width shown in FIG. 14 in the width direction X. That is, as shown in FIG. 14, the pair of pressing members 81 located on the outermost side in the width direction X is the rib located on the outermost side of the plurality of ribs 54 supporting the medium M having the maximum width in the width direction X. It is located between 54 and the side edge Ms of the medium M having the maximum width. The pressing member 81 is positioned between the outermost rib 54 that supports both ends of the medium M having the maximum width in the width direction X and the rib 54 located next to the inside of the rib 54 in the width direction X. At least it is provided.

As shown in FIGS. 7 and 8, the medium guide mechanism 46 includes a pair of first guide mechanisms 46A arranged on both sides in the width direction X and a second guide mechanism 46B arranged in the central portion in the width direction X. To be equipped. The guide member 47 is composed of a pair of first guide members 47A constituting a pair of first guide mechanisms 46A and a second guide member 47B constituting a second guide mechanism 46B. The pair of first guide members 47A are made of common parts. The lower surface of the guide member 47 facing the transport path of the medium M is a guide surface 47C (see FIGS. 6 and 9) that guides the medium M.

As shown in FIG. 9, one first guide mechanism 46A has a structure in which two region GAs halved in the width direction X have substantially the same structure. The first guide member 47A has a structure in which two region GAs, half each in the width direction X, have substantially the same structure. In the two regions GA of the first guide member 47A, two driven rollers 43 rotatably supported at the downstream end in the transport direction Y0 and the upstream end in the transport direction Y0 are directed upward in the vertical direction Z1. Two urging members 48 including coil springs that urge the two driven rollers 43 downward in the vertical direction Z1 by pulling are assembled. In the two regions GA of the first guide member 47A, two urging mechanisms 82 are arranged at positions sandwiched between the driven roller 43 and the urging member 48 in the transport direction Y0. Further, the first guide member 47A supports three pressing members 81 at positions sandwiching the two driven rollers 43 in the width direction X.

As shown in FIG. 10, the urging mechanism 82 has a structure in which both side portions divided into two in the transport direction Y0 are rotationally symmetric by 180 degrees. That is, the urging mechanism 82 includes a pair of spring support portions 84 formed on the first guide member 47A and having a structure symmetrical to the transport direction Y0, and a torsion coil spring mounted on the pair of spring support portions 84, respectively. It includes two elastic members 83. The pair of spring support portions 84 project in the directions opposite to each other in the transport direction Y0. The two elastic members 83 are mounted with the two spring support portions 84 inserted into the respective coil portions. In the two elastic members 83, one of the two spring legs is hooked at a predetermined position on the first guide member 47A, and one spring leg 83A of the other extends in the width direction X in opposite directions to each other. There is. The ends of the spring legs 83A are hooked on the recesses 813 in a state of pressing the arms 811 of the two pressing members 81 located on both sides of the urging mechanism 82 in the width direction X downward in the vertical direction Z1. .. In the present embodiment, two first guide mechanisms 46A having such a structure are arranged on both sides of the second guide mechanism 46B in the width direction X, but in the large recording device 11, three or more first guide mechanisms 46A are arranged. By arranging the pieces side by side in the width direction X, the parts constituting the medium guide mechanism 46 can be standardized. Further, one first guide mechanism 46A may have three or more region GAs having substantially the same structure.

As shown in FIG. 11, the pressing member 81 includes a long arm 811 and a pressing head 812 projecting from the tip of the arm 811. The arm 811 has a recess 813 on which the end of the spring leg 83A (see FIG. 10) of the elastic member 83 is hooked at a predetermined position on the upper surface thereof. The arm 811 has a recess 814 in which the inner peripheral surface into which the support shaft 471 is inserted is recessed in an arcuate shape on the lower surface of the rear end portion. In the longitudinal direction of the arm 811, the recess 813 for hooking the spring is located on the tip side of the recess 814 for inserting and attaching the support shaft. In the example shown in FIG. 11, the recess 813 for hooking the spring is located substantially at the center between the recess 814 for attaching the support shaft and the pressing head 812 in the longitudinal direction of the arm 811.

The pressing head 812 has a hammer head shape protruding from both sides in the width direction X at the tip of the arm 811. The pressing head 812 has an abutting portion 815 whose lower end abuts on the surface of the medium M in order to press the medium M. That is, the pressing member 81 has a contact portion 815 that comes into contact with the medium M when pressing the medium M at the tip end portion of the arm 811. The contact portion 815 has a wide shape protruding in the width direction X with respect to the arm 811. Slopes that are inclined with respect to the pressing direction PD are formed on both sides of the contact portion 815 in the transport direction Y0, and the slopes guide the tip of the medium M to the contact portion 815, the first guide surface 816, and the medium M. A second guide surface 817 that guides the rear end to the contact portion 815 is formed. A stopper portion 818 is provided on the lower surface of the arm 811 at a position between the recess 813 for stopping the spring and the pressing head 812. When the pressing member 81 is in the standby position shown in FIG. 12, the stopper portion 818 abuts on the stopper 472 so as to be able to regulate the further movement of the pressing head 812 in the pressing direction PD. The stopper 472 is provided at a portion of the guide member 47 corresponding to the stopper portion 818 of the pressing member 81.

As shown in FIG. 12, the pressing member 81 is rotatably supported around the support shaft 471. The pressing member 81 hits the first guide surface 816 that guides the tip of the medium M transported in the transport direction Y0 to the contact portion 815 and the rear end of the medium M that is reversely transported toward the upstream in the transport direction Y0. It has a second guide surface 817 that guides the contact portion 815. FIG. 12 shows the pressing member 81 so that the direction of the force received by the first guiding surface 816 from the medium M when the tip of the medium M hits the first guiding surface 816 is the direction in which the pressing member 81 is rotated upward. The angle of the first guide surface 816 when in the standby position shown in is set.

When the pressing member 81 is in the standby position shown in FIG. 12, the rear end of the medium M is more than the virtual line SL connecting the support shaft 471 which is the rotation fulcrum and the point at the predetermined position on the second guide surface 817. The inclination angle of the second guide surface 817 with respect to the transport direction Y0 is set so that the direction of the force F1 received from the medium M by the second guide surface 817 when hitting the second guide surface 817 is upward. That is, when the pressing member 81 is in the standby position shown in FIG. 12, the direction of the force F1 that the second guiding surface 817 receives from the medium M when the rear end of the medium M hits the second guiding surface 817 is the pressing member. The inclination angle of the second guide surface 817 is set so that the 81 can be rotated upward.

As shown in FIG. 13, when the pressing member 81 is in the standby position where the pressing member 81 has moved most in the pressing direction PD, the contact portion 815 of the pressing member 81 is over the support surface 54A of the rib 54 in the transport direction Y0. It overlaps by the lap distance Ly, and overlaps by the overlap distance Lz in the vertical direction Z1 orthogonal to the support surface 54A. That is, in the side view shown in FIG. 13 seen from the width direction X intersecting the transport direction Y0, when the pressing member 81 is in the standby position, the contact portion 815 is conveyed at the portion of the support surface 54A with respect to the rib 54. It has a portion that overlaps in both the direction Y0 and the vertical direction Z1. In order to satisfy this overlap condition, for example, in the medium M having a relatively low rigidity such as plain paper, the portion corresponding to the pressing member 81 is pressed downward by the pressing member 81. Since the rigidity is small, the medium M bends and the force for lifting the pressing member is relatively small. As a result, as shown in FIG. 14, the medium M is curved in a wavy shape that undulates in the width direction X. The wavy shape that undulates in the width direction X imparts tension to the medium M in the transport direction Y0. This tension makes it difficult for the medium M to bend in the direction in which the tip portion rises. That is, the floating of the tip of the medium M is suppressed.

<Electrical configuration of recording device>
The control unit 100 performs various controls including recording control for the recording device 11. The control unit 100 includes one or more processors that operate according to a computer program (software). The processor includes a CPU and a memory such as a RAM and a ROM, and the memory stores a program code or an instruction configured to cause the CPU to execute a process. The control unit 100 is not limited to the one that performs software processing. For example, the control unit 100 may include a dedicated hardware circuit (for example, an integrated circuit for a specific application: ASIC) that performs hardware processing for at least a part of the processing executed by itself.

A feed motor 35, a transfer motor 71, a carriage motor 32, a recording head 25, and a gap adjusting mechanism 37 are electrically connected to the control unit 100 as an output system. The control unit 100 controls the feed motor 35, the transport motor 71, the carriage motor 32, the recording head 25, and the gap adjusting mechanism 37. Further, a medium detector 76, a linear encoder 34, and a rotary encoder 74 are electrically connected to the control unit 100 as an input system.

The linear encoder 34 includes a linear scale (not shown) and an optical sensor provided on the carriage 24, and the optical sensor optically reads the linear scale to detect a number of pulses including a number of pulses proportional to the movement amount of the carriage 24. Output a signal. Further, the rotary encoder 74 outputs a detection signal including a number of pulses proportional to the amount of rotation of the transfer roller pair 41.

The control unit 100 has the position of the medium M when the tip of the medium M fed by the feeding unit 21 is detected by the medium detector 76 as the origin position, and corresponds to the position of the front end or the rear end of the medium M. Count the values. The control unit 100 controls the motors 35 and 71 of the transport system based on the counted positions of the front end or the rear end of the medium M, and controls the feed, transport and discharge of the medium M.

For example, when double-sided recording is instructed, the control unit 100 drives the transfer motor 71 in the forward direction to rotate the transfer roller pair 41 and the discharge roller pair 42 in the normal direction when first recording the first surface of the medium M. By driving, the medium M is conveyed in the first transfer direction Y1. During this transfer, an image or the like is recorded on the first surface of the medium M. When the control unit 100 finishes recording the first surface of the medium M, the control unit 100 reversely drives the transfer motor 71 to reversely drive the transfer roller pair 41 and the discharge roller pair 42, thereby moving the medium M to the second transfer direction Y2. Reverse transport. The reverse-conveyed medium M is inverted in a direction in which the second surface opposite to the first surface becomes the recording surface to be recorded through an inversion path (not shown), and the medium M after the inversion is in the first transfer direction. It will be redelivered to Y1. When double-sided recording is performed in this way, the control unit 100 drives the transport motor 71 in the forward rotation to transport the medium M in the first transport direction Y1 and causes the recording unit 23 to perform recording on the first surface. After the recording on the first surface is completed, the transfer motor 71 is reversely driven to reverse the medium M in the second transfer direction Y2. Then, recording is performed by the recording unit 23 on the second surface of the medium M redelivered in the first transport direction Y1. The medium M on which double-sided recording is performed is discharged from the discharge port 75 and placed on the stacker 27.

The control unit 100 sets the origin when the carriage 24 comes into contact with the end position on the home position HP side and reaches the origin position, and counts the number of pulse edges of the detection signal input from the linear encoder 34 to obtain the carriage 24. Acquires the carriage position in the scanning direction X with reference to the origin position of. The control unit 100 controls the speed and position of the carriage 24 by controlling the carriage motor 32 based on the count value of the carriage position.

The control unit 100 stores the current gap in the memory. Further, the memory stores reference data indicating the correspondence between the medium type and the gap. When the control unit 100 receives the recorded data, the control unit 100 acquires the medium type information included in the recorded data. The control unit 100 acquires the gap to be set by referring to the reference data based on the acquired medium type information. When the control unit 100 performs the gap adjustment control for adjusting the gap to be set, the control unit 100 controls the carriage 24 and causes the carriage 24 to perform the gap switching control. The gap between the nozzle surface 25A of the recording head 25 and the ribs 54 and 55 of the support member 50 is adjusted to the target gap.

Next, the operation of the recording device 11 will be described.
For example, when double-sided recording is performed, the medium M fed by the feeding unit 21 is conveyed in the first conveying direction Y1 by the conveying roller pair 41 as shown in FIG. The medium M that has passed through the transport roller pair 41 hits the contact portion 815 of the pressing member 81 and is pressed downward. The tip of the medium M having a low rigidity such as plain paper is guided to the contact portion 815 along the first guide surface 816 shown in FIG. The medium M having low rigidity is pressed by a plurality of pressing members 81 at a plurality of locations in the width direction X. Since the plurality of pressing members 81 are arranged at positions corresponding to the concave regions 59 having no ribs 54 in the width direction X, the medium M is pressed at a plurality of locations spaced apart in the width direction X.

As shown in FIG. 13, the contact portion 815 of the pressing member 81 overlaps the support surface 54A of the rib 54 by the overlap distance Ly in the transport direction Y0 and overlaps the overlap distance Lz in the vertical direction Z1. .. Therefore, for example, in the medium M having low rigidity such as plain paper, the portion pressed downward by the pressing member 81 is bent, and as shown in FIG. 14, the medium M is curved in a wavy shape wavy in the width direction X. The wavy shape that undulates in the width direction X by this tension imparts tension in the transport direction Y0 to the medium M. Due to this tension, the tip of the medium M is less likely to be curved in the rising direction. As a result, the floating of the tip portion of the medium M is suppressed.

For example, when the tip of the medium M is lifted, the tip may come into contact with the recording head 25. When the tip of the medium M comes into contact with the nozzle surface 25A of the recording head 25, the medium M becomes dirty with ink. Further, when the tip portion of the medium M is lifted, the recording head 25 moving in the width direction X comes into contact with the tip portion of the medium M, which causes jam of the medium M. On the other hand, in the present embodiment, the floating of the tip of the medium M is suppressed, so that the medium M is contaminated and jammed due to the tip of the medium M coming into contact with the nozzle surface 25A of the recording head 25. It can be avoided.

Further, for example, the medium M having a relatively high rigidity such as photographic paper lifts the pressing head 812 when its tip hits the first guide surface 816. As a result, the pressing member 81 is lifted against the urging force of the elastic member 83, so that the surface of the medium M such as photographic paper having high rigidity is not damaged. As a result, a high-definition image is recorded on the photo paper.

On the other hand, in the case of double-sided recording, when the recording on the first surface is completed, the medium M is reverse-conveyed in the second transport direction Y2. The rear end of the medium M transported in the second transport direction Y2 corresponds to the second guide surface 817 shown in FIG. For example, in the medium M having low rigidity such as plain paper, the portion corresponding to the pressing member 81 is pressed downward by the pressing member 81. Since the rigidity is small, the medium M bends, and the force for lifting the pressing member 81 is relatively small. As a result, as shown in FIG. 14, the medium M is curved in a wavy shape that undulates in the width direction X. The wavy shape that undulates in the width direction X imparts tension to the medium M in the transport direction Y0. This tension makes it difficult for the medium M to bend in the direction in which the rear end portion rises. That is, the floating of the rear end portion of the medium M is suppressed.

For example, in a medium M having a relatively high rigidity such as photo paper, when the tip of the medium M hits the second guide surface 817, the pressing member 81 lifts the pressing head 812 around the support shaft 471. As a result, the medium M that is reverse-conveyed in the second transport direction Y2 is smoothly reverse-conveyed without being caught by the pressing member 81. At this time, the recorded recording surface is not easily scratched.

Then, the inverted medium M is re-fed in the first transport direction Y1. Similar to the case of recording on the first surface, a wave shape is formed by the pressing member 81 on the medium M having low rigidity such as plain paper. Therefore, the floating of the tip portion of the medium M is suppressed as in the case of recording on the first surface. Further, for example, even for a medium M having a high rigidity such as a photo paper, the surface of the medium M is not easily scratched by lifting the pressing member 81 as in the case of recording on the first surface. Therefore, a high-definition image is also recorded on the second surface of the photo paper.

According to the first embodiment, the following effects can be obtained.
(1) The recording device 11 has a support member 50 having a support surface 54A that supports the medium M of the portion recorded by the recording unit 23, and a support member at a position upstream of the recording position of the recording unit 23 in the transport direction Y0. A pressing member 81 that presses the medium M toward 50 is provided. The pressing member 81 is provided so as to be movable in a direction intersecting the support surface 54A. Therefore, when the pressing member 81 presses the medium M, the floating of the medium M can be suppressed, so that the contact with the recording unit 23 due to the lifting of the medium M can be reduced. Further, since the position before recording is held upstream of the recording position of the medium M in the transport direction Y0, the recorded image is not damaged. Further, since stains such as recording ink are not transferred to the pressing member 81, it is possible to prevent the stains transferred to the pressing member 81 from being transferred to the other medium M and the other medium M from becoming dirty. Further, since the pressing member 81 can move in the direction intersecting the support surface 54A, for example, the medium M is less likely to be damaged by retracting the medium M having a high rigidity in the direction away from the support surface 54A.

(2) An elastic member 83 for urging the pressing member 81 in the pressing direction PD in the direction approaching the supporting member 50 is provided. Therefore, since the pressing member 81 provided so as to be movable in the direction intersecting the supporting surface 54A is urged in the pressing direction PD, for example, in the direction away from the supporting surface 54A for the medium M having high rigidity. By retracting, the medium M is less likely to be damaged.

(3) The transport unit 40 includes a transport roller pair 41 that is paired with the drive roller 410 and the driven roller 43. A guide member 47 that is rotatably supported while supporting the driven roller 43 at the downstream end in the transport direction Y0, and an urging member 48 that urges the guide member 47 in a direction in which the driven roller 43 approaches the drive roller 410. And. The pressing member 81 is provided at the downstream end of the guide member 47 in the transport direction Y0 in a state of being urged by the elastic member 83 in the pressing direction PD. Therefore, the pressing member 81 can be arranged at a position corresponding to the rib 54 of the supporting member 50 by using the guide member 47 that supports the driven roller 43.

(4) The pressing member 81 includes a contact portion 815 that comes into contact with the medium M when pressing the medium M, and a first guide surface 816 that guides the tip of the medium M transported in the transport direction Y0 to the contact portion 815. Has. Therefore, even if the tip portion of the medium M transported in the transport direction Y0 is lifted, the tip portion is guided to the contact portion 815 along the first guide surface 816 of the pressing member 81. Therefore, it is possible to prevent the tip of the medium M from floating and coming into contact with the recording unit 23. Further, in the configuration in which the contact portion 815 is located below the vertical direction Z1 which is the direction away from the nozzle surface 25A with respect to the support surface 54A and overlaps with the rib 54 in the vertical direction Z1, the contact portion 815 is in the nip position. It is located farther than the nozzle surface 25A than N1. In this case, the tip of the medium M having low rigidity such as plain paper moves along the first guide surface 816 to be guided to the contact portion 815, and the medium M can be curved in a wavy shape. Further, since the tip of the highly rigid medium M such as photographic paper moves along the first guide surface 816 to lift the contact portion 815, the medium M is not easily scratched.

(5) The pressing member 81 has a second guide surface 817 that guides the rear end of the medium M, which is reversely transported toward the upstream in the transport direction Y0, to the contact portion 815. Therefore, even if the rear end portion of the medium M that is reversely conveyed is lifted, the rear end portion is guided to the contact portion 815 along the second guide surface 817 of the pressing member 81. Therefore, even if the rear end of the medium M to be reverse-conveyed is lifted, the medium M can be smoothly reverse-conveyed.

(6) The second guide surface 817 is upwardly orthogonal to the second guide surface 817 at a predetermined position with respect to the virtual line SL connecting the predetermined position on the second guide surface 817 and the support shaft 471 which is the rotation fulcrum. The angle is set so that the direction is on the upper side. Therefore, the pressing member 81 can be lifted by moving the rear end of the medium M having high rigidity, which is reversely conveyed, along the second guide surface 817. Further, the rear end of the medium M, which is reversely conveyed and has low rigidity, moves along the second guide surface 817, so that the rear end of the medium M can be guided to the contact portion. Therefore, the medium M can be smoothly reverse-conveyed. Further, in the region downstream of the contact portion 815 in the transport direction Y0, the recording portion 23 at the time of recording is located, and it is difficult to secure the arrangement space of the pressing member 81. Since the holding member 81 is arranged in a state where the support shaft 471 that serves as the rotation fulcrum is located upstream of the contact portion 815 in the transport direction Y0, it is easy to secure a space for arranging the holding member 81.

(7) The support member 50 includes a plurality of ribs 54 having support surfaces 54A located at intervals in the width direction X on the end surface, and a plurality of regions having a lower height than the ribs 54 other than the plurality of ribs 54. It includes a concave region 59. The contact portion 815 of the pressing member 81 is arranged at a position facing the concave region 59 of the supporting member 50. Therefore, it is possible to prevent the pressing member 81 from coming into contact with the rib 54. For example, when the rib 54 is contaminated with ink or the like, the stain is transferred to the pressing member 81 in contact with the rib 54, and then the contamination is transferred from the pressing member 81 to the medium M. It is possible to prevent the medium M from becoming dirty due to this kind of cause. Further, the medium M can be pressed deeper than the support surface 54A of the rib 54. For example, the medium M can be curved in a wavy shape.

(8) When the pressing member 81 is in the position where the pressing member 81 is most moved in the pressing direction PD, the contact portion 815 is in the vertical direction Z1 and the transport direction Y0 orthogonal to the supporting surface 54A with respect to the supporting surface 54A of the rib 54. It overlaps. Therefore, the medium M can be curved in a wavy shape by pressing the portion of the medium M corresponding to the concave region 59 deeper than the support surface 54A of the rib 54 by the plurality of pressing members 81. Therefore, the contact with the recording unit 23 due to the floating of the medium M during transportation can be reduced.

(9) The pressing member 81 is between the outermost rib 54 that supports both ends of the medium M having the maximum width in the width direction X and the rib 54 located next to the inside of the rib 54 in the width direction X. At least in position. Therefore, since the wave can be formed at the end where the wave is likely to be formed on the medium M, a wave of an appropriate size is surely formed on the medium M without giving an excessive load to the medium M, and the medium being conveyed is being conveyed. Lifting from the support surface of M can be suppressed. The central portion of the medium M in the width direction X is less likely to bend when the medium M is pressed than the end portion in the width direction X of the medium M. The medium M is more likely to bend and form a wave when the portion close to the end, which is the free end thereof, is pressed.

(10) The pressing member 81 has an arm 811 and an abutting portion 815 that comes into contact with the medium M when the medium M is pressed against the tip of the arm 811. The contact portion 815 has a wide shape protruding in the width direction X. Therefore, the contact portion of the pressing member can press a wider portion of the medium M as compared with the configuration in which the dimension in the width direction is the same as that of the arm. For example, the medium M can be curved into an appropriate wave shape without making small creases or scratches on the medium M.

(11) For example, when the pressing member 81 is fixed to a frame or the like that cannot be displaced together with the medium guide mechanism 46, the thicker the medium M, the deeper the pressing amount to be pushed into the pressing member 81, and the thick medium M is damaged. easy. On the other hand, since the pressing member 81 is provided in the medium guide mechanism 46, the medium guide mechanism 46 is displaced upward according to the thickness of the medium M nipped by the transport roller pair 41. Therefore, the pressing amount of the pressing member 81 pushing the surface of the medium M becomes constant regardless of the thickness of the medium M. Therefore, the thick medium M such as photo paper is less likely to be scratched as compared with the configuration in which the pressing member 81 is fixed to the frame or the like.

(Second Embodiment)
Next, the second embodiment will be described. In this second embodiment, the shape of the pressing head at the tip of the pressing member is different from that in the first embodiment. Hereinafter, the second embodiment will be described with reference to FIGS. 15 to 23. The arrangement position of the pressing member 81 in the second embodiment is basically the same as that in the first embodiment. The pressing member 81 is provided so as to be movable in a direction intersecting the support surface 54A of the support member 50. The pressing member 81 of this example is also urged in the pressing direction PD by the urging force of the elastic member 83. The pressing member 81 of this example also rotates in the same manner as in the first embodiment, so that the contact portion 815 at the tip thereof presses the medium M in the pressing direction PD (see FIG. 16).

As shown in FIG. 15, the plurality of pressing members 81 are arranged at intervals in the width direction X with the pressing head 812N located above the first supporting portion 51 constituting the supporting member 50. There is. The pressing head 812N is located in the width direction X corresponding to the concave region 59 between the ribs 54.

The pressing member 81 shown in FIG. 15 is rotatably provided around a support shaft 471 (see FIG. 12). The contact portion 815 of the pressing member 81 is rotated to the lower limit by the urging force of the elastic member 83 (see FIGS. 9 and 10) when the medium M to be pressed does not exist below the contact portion 815, and the supporting surface of the rib 54 is supported. It is located at a height lower than 54A. Therefore, the pressing member 81 presses the medium M supported by the supporting surface 54A from the upper side to a position below the supporting surface 54A at the position of the concave region 59 between the ribs 54 in the width direction X.

One of the features of the holding member 81 of the present embodiment is the disc when the disc tray 28 on which the disc LD is set is set in the recording device 11 when label recording is performed on the disc LD such as CDR or DVD. An object of the present invention is to solve a problem caused by interference between a tray 28 and a pressing member 81. In this example, by devising the shape of the pressing head 812N of the pressing member 81, the above-mentioned problem that occurs when the pressing head 812 of the pressing member 81 of the first embodiment has a shape is solved. FIG. 15 shows that the disc tray 28 on which the disc LD is set when performing label recording is along the guide on the upper surface of the stacker 27 from the vicinity of the discharge port 75 (see FIG. 4) that opens in front of the recording device 11. The state of the process of being inserted into the device main body 12 is shown. The disc tray 28 may be manually inserted into the device main body 12 by the user, or may be automatically inserted by the power of an actuator such as a motor (not shown).

The disc tray 28 includes a square plate-shaped main body 280 having a circular set portion 281 on which the disc LD can be set, and an extending portion 282 extending to the tip of the main body 280 in the insertion direction into the device main body 12. Has.

As shown in FIG. 15, in the process of inserting the disc tray 28 in which the disc LD is set into the apparatus main body 12, the extension portion 282 is nipped into the transport roller pair 41 constituting the transport portion 40. The disc tray 28 is inserted to a predetermined recording start position in the second transport direction Y2 while the extension portion 282 is nipped into the transport roller pair 41. When the disc LD is inserted to a predetermined recording start position together with the disc tray 28, recording on the label surface from the recording start position to the disc LD is started. During this recording, the disc tray 28 is conveyed in the first transfer direction Y1 by the transfer roller pair 41 and the discharge roller pair 42. In this transfer process, the liquid is ejected by the recording head 25 to perform label recording for recording on the label surface of the disc LD.

As shown in FIG. 15, the extension portion 282 of the disc tray 28 has a plate-like shape that is easily nipped into the transport roller pair 41. The extension portion 282 is composed of a plurality of extension portions 283 to 285 and the like having different extension lengths. Assuming that the extension portion 282 is simply a square plate having a constant extension length regardless of the position in the width direction X, the entire width of the extension portion 282 is simultaneously nipped into the transport roller pair 41. Therefore, the load for lifting the plurality of driven rollers 43 becomes very large. In this case, the load that the user pushes the disc tray 28 for setting is too large, or the load applied to the motor or the like that is the drive source of the disc tray 28 when the disc tray 28 is automatically inserted is too large.

Therefore, in the present embodiment, the extension portion 282 of the disc tray 28 is composed of a plurality of extension portions 283 to 285 having different extension lengths so as to be gradually nipled into the transport roller pair 41 in a stepwise manner. Will be done. That is, the extension portion 282 has a first extension portion 283, a second extension portion 284, a third extension portion 285, and the like having different extension lengths. The first extending portion 283 is located at the central portion in the width direction X and has the longest extending length. The pair of second extension portions 284 are located on both sides of the first extension portion 283 in the width direction X, and the extension length is shorter than that of the first extension portion 283. The pair of third extension portions 285 are located outside the width direction X of the pair of second extension portions 284, and the extension length is shorter than that of the second extension portion 284. The first extending portion 283 has a plurality of recesses at different positions in the width direction X. The positions of the plurality of extension portions 283 to 285 in the width direction X are positions that roughly correspond to the plurality of driven rollers 43. When the disc tray 28 is inserted into the apparatus main body 12, the first extension portion 283 is first nipped into the transport roller pair 41, then the second extension portion 284 is nipped into the transport roller pair 41, and finally. The third extension portion 285 is nipped with the transport roller pair 41. Therefore, the load when the disc tray 28 is inserted to the recording start position is reduced.

Since each of the extending portions 283 to 285 has a shape in which the extending length is gradually different, the extending portion 283 to 285 has a corner portion at the outer end portion in the width direction X. In the process of inserting the disc tray 28, the corner portion 284A of the second extending portion 284 is in a position where it can come into contact with the pressing heads 812N of the two pressing members 81. The outer peripheral surface of the corner portion 284A of this example is formed in an arcuate shape. Therefore, when the pressing heads 812N of the two pressing members 81 hit the arcuate outer peripheral surfaces of the two corners 284A, the pressing heads 812N come into contact with the outer peripheral surfaces of the corners 284A as the disc tray 28 is inserted. Is pushed outward in the width direction X along. In FIG. 15, one of the two pressing members 81 on the left side is pushed in the first direction X1 and the other on the right side is pushed in the second direction X2 at the positions corresponding to the two corner portions 284A.

FIG. 16 shows the entire holding member 81 of the second embodiment. As shown in FIG. 16, the pressing member 81 of the second embodiment has an arm 811 and a pressing head 812N projecting from the tip end portion of the arm 811 in the transport direction Y0. The pressing head 812N has a different shape from the pressing head 812 of the first embodiment. Similar to the first embodiment, the pressing head 812N has a protruding shape protruding from both sides in the width direction X with respect to the arm 811. The pressing head 812N has a first guide surface 816 and a second guide surface 817. As in the first embodiment, the arm 811 has a recess 813 into which the spring leg 83A of the elastic member 83 is hooked, a recess 814 into which the support shaft 471 is inserted, and a stopper capable of contacting the stopper 472. It has a part 818.

As shown in FIG. 17, the pressing head 812 has a shape symmetrical with respect to the width center WC in the width direction X. The pressing head 812N has a first surface 817A, a second surface 821, and a third surface 822, which are not found in the pressing head 812 of the first embodiment.

The pressing member 81 has a first surface 817A that is inclined in the same direction as the second guide surface 817 at a position adjacent to the upper side of the second guide surface 817. In the present embodiment, the angle formed by the first surface 817A with respect to the horizontal is larger than the angle formed by the second guide surface 817 with respect to the horizontal. This is because the position of the upper end of the first surface 817A is separated as far as possible upstream in the transport direction Y0 to secure a space necessary for avoiding contact between the pressing head 812N and the recording unit 23. The first surface 817A and the second guide surface 817 may have the same inclination angle.

Here, the pressing head 812 of the pressing member 81 of the first embodiment shown in FIG. 22 is compared with the pressing head 812N of the pressing member 81 of the second embodiment shown in FIG. 23. The pressing head 812 of the first embodiment has a slope in which the upper surface 812A adjacent to the upper side of the second guide surface 817 is inclined in a downward direction toward the downstream side of the transport direction Y0. The inclination angle of the upper surface 812A with respect to the horizontal is, for example, a predetermined angle of 30 degrees or more. Therefore, the height dimension H1 of the second guide surface 817 in the vertical direction Z1 is relatively short.

On the other hand, as shown in FIG. 23, the upper surface 823 of the pressing head 812N of the pressing member 81 of the second embodiment extends substantially horizontally. The upper surface 823 may have a slope that inclines in a downward direction toward the downstream of the transport direction Y0, but even in that case, the inclination angle of the upper surface 823 with respect to the horizontal is, for example, less than 20 degrees. Therefore, between the second guide surface 817 and the upper surface 823, a first surface 817A, which is adjacent to the upper side of the second guide surface 817 and is inclined in the same direction as the second guide surface 817, is added. Due to the addition of the first surface 817A, the height dimension H2 of the guide surface in which the second guide surface 817 and the first surface 817A are combined in the vertical direction Z1 becomes larger than the height dimension H1 of the second guide surface 817 in FIG. Has been secured for a long time. The upper surface 823 of the pressing head 812N may be an inclined surface facing upward from the horizontal.

Further, as shown in FIG. 17, the pressing member 81 has a pair of second surfaces 821 on both sides of the pressing head 812N with the width center WC sandwiched in the width direction X. The second surface 821 is formed over a height range including a height position where the disc tray 28 hits the corner portion 284A of the extension portion 282 nipped into the transport roller pair 41, and is downstream of the transport direction Y0 (first). The surface is inclined toward the center of width WC toward the transport direction Y1) and downward.

Further, as shown in FIG. 17, the pressing member 81 has a pair of third surfaces 822 on both side surfaces sandwiching the width center WC in the width direction X in the pressing head 812N. The third surface 822 is located on a side surface that is adjacent to the first guide surface 816 in the width direction X and intersects the width direction X, and covers a height range including a height position when the medium M is conveyed. It is a surface that is formed and is inclined toward the center WC of the width of the pressing member 81 toward the lower side. The "height range including the height position" that specifies the formation positions of the second surface 821 and the third surface 822 is determined based on the state when the pressing member 81 is in the standby position.

Next, the operation of the pressing member 81 of the second embodiment configured as described above will be described in comparison with the pressing member 81 of the first embodiment.
First, the operation when the disc tray 28 is inserted into the apparatus main body 12 will be described.

As shown in FIG. 18, in the pressing member 81 of the first embodiment, in the process of inserting the disc tray 28 in the second transport direction Y2, the outer peripheral surface of the corner portion 284A hits the side surface 819 of the pressing head 812, and the pressing head 812 receives a force F2 in the width direction X. Therefore, an unreasonable force different from the rotation direction acts on the pressing member 81.

On the other hand, as shown in FIG. 19, in the pressing member 81 of the second embodiment, in the process of inserting the disc tray 28 in the second transport direction Y2, the outer peripheral surface of the corner portion 284A is the second surface of the pressing head 812N. It hits 821. As a result, the pressing head 812N receives a force F3 in the direction perpendicular to the second surface 821. This force F3 causes the pressing head 812N to escape upward. Therefore, it is difficult for an unreasonable force different from the rotation direction to act on the pressing member 81 of the second embodiment.

Next, the operation when recording on the medium M will be described. The pressing member 81 is positioned at a position where the side end Ms of the medium M does not hit, but when skew occurs in the medium M, the side end Ms of the medium M hits the side surface of the pressing head 812 of the pressing member 81. There is. In particular, during double-sided recording, the medium M whose surface has been recorded is switched back and conveyed in the second transfer direction Y2, and after being inverted along a roller (not shown) at a position upstream of the recording head 25, the medium M is Redelivered with the back side facing up. At the time of refeeding the medium M when recording the back surface, a large skew is likely to occur in the medium M as compared with the time of feeding the medium M at the time of recording the front surface.

As shown in FIG. 20, in the pressing member 81 of the first embodiment, when the medium M skews when recording on the medium M, the side end Ms of the medium M moves in the width direction X, and the main body is in a position where it does not hit. It hits the side surface 819 of a certain pressing head 812. The pressing head 812 receives a force F4 in the width direction X (second direction X2 in FIG. 20) on its side surface 819. Therefore, an unreasonable force different from the rotation direction acts on the pressing member 81. Further, the side end Ms of the medium M is strongly pressed by the side surface 819 of the pressing head 812 to be deformed.

On the other hand, as shown in FIG. 21, in the pressing member 81 of the second embodiment, when the medium M skews when recording on the medium M, the side end Ms of the medium M moves in the width direction X. At this time, the third surface 822 of the pressing head 812N is at the same height as the medium M being recorded, and is a surface that is inclined in a direction closer to the width center WC toward the lower side. Therefore, the pressing head 812N is the medium M. Receives a force F5 in the direction perpendicular to the third surface 822 from the side end Ms of. Therefore, the pressing head 812N escapes upward. As a result, it is difficult for an unreasonable force different from the rotation direction to act on the pressing member 81 of the second embodiment. Further, the side end Ms of the medium M is not deformed.

Next, the operation when the medium M is switchback-conveyed during double-sided recording will be described. When the recording of the surface of the medium M is completed during double-sided recording, the rear end Mr of the medium M is often located downstream of the pressing head 812 of the pressing member 81 in the transport direction Y0. From this state, switchback transport in which the medium M is reversely transported in the second transport direction Y2 is started. In this case, the rear end Mr of the medium M may be lifted due to curl.

As shown in FIG. 22, in the pressing member 81 of the first embodiment, when the medium M recorded on the surface is reversely conveyed in the second conveying direction Y2, the rear end Mr of the medium M is caused by curl. When the height exceeds a predetermined height, the height dimension on which the second guide surface 817 is formed in the pressing head 812 is only dimension H1, so that the rear end Mr of the medium M hits the upper side of the second guide surface 817. In this case, the rear end Mr of the medium M is not guided downward by the second guide surface 817. As a result, the rear end Mr of the medium M collides with the pressing head 812 of the pressing member 81, or rides on the upper side of the pressing head 812. In this case, jam of the medium M may occur.

On the other hand, as shown in FIG. 23, in the pressing member 81 of the second embodiment, when the medium M recorded on the surface is reversely conveyed in the second conveying direction Y2 in the double-sided recording, the rear end Mr. However, even if the height exceeds a predetermined height due to curling, the rear end Mr of the medium M hits the first surface 817A. That is, since the height dimension H2 of the pressing head 812N, which is the sum of the second guide surface 817 and the first surface 817A, is larger than the dimension H1, the rear end Mr of the medium M corresponds to the first surface 817A. Then, the rear end Mr of the medium M is guided to the second guide surface 817 along the first surface 817A, and further guided to the contact portion 815 below from the second guide surface 817. As a result, the medium M is nipped into the transport roller pair 41 through the lower side of the pressing head 812, and is further reversely transported in the second transport direction Y2 by the transport roller pair 41. Then, the medium M is inverted along a roller (not shown) at a position upstream of the recording head 25, and then heads toward the recording position facing the scanning area of the recording head 25 by the transport roller pair 41 with the back surface facing upward. Will be redelivered. Therefore, double-sided recording can be appropriately performed without failing to reverse transport the medium M during double-sided recording.

Therefore, according to the second embodiment, in addition to the effects (1) to (11) in the first embodiment, the following effects (12) to (14) can be obtained.
(12) The pressing member 81 has a first surface 817A inclined in the same direction as the second guide surface 817 at a position adjacent to the upper side of the second guide surface 817. Therefore, even if the rear end Mr of the medium M, which is reversely conveyed, rises higher than the second guide surface 817 due to curl or the like after the recording of the front surface is completed at the time of double-sided recording and before the recording of the back surface is performed, the second After being guided to the second guide surface 817 along the first surface 817A, it is further guided to the contact portion 815 along the second guide surface 817. Therefore, even if the rear end Mr of the medium M to be reverse-conveyed is excessively lifted due to curl or the like, the medium M can be reverse-conveyed by a regular path passing under the pressing member 81.

(13) The disc tray 28 in which the disc LD to be the target of label recording is set is inserted by being reversely transported by the transport unit 40 from the downstream to the upstream in the transport direction Y0. The disc tray 28 has an extension portion 282 that extends upstream in the transport direction Y0. The pressing member 81 is formed over a height range including a height position where the disc tray 28 hits the extension portion 282 inserted into the conveying roller pair 41, and the pressing member 81 is formed toward the downstream and downward of the conveying direction Y0. It has a second surface 821 that tilts toward the center WC of the width of the. Therefore, in the process in which the extension portion 282 of the disc tray 28 is nipped into the transport roller pair 41 in order to perform label recording, the outer peripheral surface of the corner portion 284A of the extension portion 282 becomes the second surface 821 of the pressing member 81. By hitting against, the pressing member 81 escapes upward. Therefore, it is possible to avoid applying an unreasonable force to the pressing member 81.

(14) A pressing member 81 is formed on a side portion adjacent to the first guide surface 816 in the width direction X over a height range including a height position when the medium M is conveyed, and the pressing member is formed downward. It has a third surface 822 that tilts toward the width center WC of 81. Therefore, the side end Ms of the medium M conveyed while being displaced in the width direction X due to the skew of the medium M comes into contact with the third surface 822 of the pressing member 81. As a result, the pressing member 81 escapes upward. Therefore, the pressing member 81 does not apply an unreasonable force from the medium M, and can suppress the deformation of the side end Ms of the medium M.

The above embodiment can also be changed to a form such as the modification shown below. Further, a further modification example may be a combination of the above embodiment and the modification examples shown below, or a combination of the modification examples shown below may be a further modification example.

As shown in FIG. 24, the pressing member may be a flap 91 rotatably provided at the downstream end of the guide member 47, which is an example of the rotating member, in the transport direction Y0. The flap 91 is rotatably supported around the rotation shaft 92 at the tip of the guide member 47. The tip of the flap 91 is a contact portion 93. The flap 91 of this example stands by, for example, in the posture shown by the solid line in FIG. 24, which hangs down in the vertical direction Z1 under its own weight. The flap 91 is restricted from the standby position shown by the solid line in FIG. 24 so that it cannot rotate further in the clockwise direction in the figure. Further, the flap 91 is allowed to rotate in the counterclockwise direction in the figure from the standby position shown by the solid line in FIG. 24. The arrangement position condition of the pressing member in the width direction X and the overlapping condition of the contact portion 93 with respect to the rib 54 are the same as those in the above embodiment. The medium M transported in the first transport direction Y1 is pressed by the contact portions 93 of the plurality of flaps 91 at a plurality of locations in the width direction X, and is curved in a wavy shape wavy in the width direction X. As a result, the floating of the medium M is suppressed, and ink stains and jams caused by rubbing the head of the medium M can be avoided. Further, at the time of double-sided recording, the rear end of the medium M which is reversely conveyed in the second conveying direction Y2 pushes the flap 91 and rotates in the counterclockwise direction of FIG. 24 with the retracted position shown by the alternate long and short dash line in FIG. 24 as the maximum position. Therefore, the medium M can be transported in the second transport direction Y2 without hindrance. When transported in the first transport direction Y1, the first medium having low rigidity such as plain paper cannot be displaced even if the flap 91 is pushed from the standby position, and the second medium having high rigidity such as photo paper cannot be displaced. May urge the flap 91 in the counterclockwise direction in FIG. 24 by an elastic member (not shown) having a strength that allows the flap 91 to be pushed and displaced from the standby position.

As shown in FIG. 25, the pressing member 81 may be configured to include a rotatable roller 95 at a portion that presses the medium M. That is, instead of the pressing head 812 of the above embodiment, a rotatable roller 95 is attached to the tip of the arm 811 of the pressing member 81. The roller 95 rotates due to friction with the surface of the medium M transported in the transport direction Y0. In the pressing member 81 of the above embodiment, since the contact portion 815 slides on the surface of the medium M, the surface of the medium M is easily scratched. On the other hand, since the roller 95 rolls on the surface of the medium M, the surface of the medium M is not easily scratched. Here, the arrangement position condition of the pressing member 81 in the width direction X and the overlapping condition of the roller 95 with respect to the rib 54 shown in FIG. 25 are the same as those of the contact portion 815 in the above embodiment. Therefore, by pressing the medium M in the width direction X with a plurality of rollers 95 and bending the medium M into a wavy shape without damaging the medium M, it is possible to suppress the floating of the medium M. Instead of the roller 95, a ball that is rotatably supported by the tip of the arm 811 may be used.

As shown in FIG. 26, the pressing member 97 may extend from the downstream end of the guide member 47, which is an example of the rotating member constituting the medium guide mechanism 46, in the transport direction Y0. Specifically, the pressing member 97 includes an arm 98 extending from the downstream end portion of the guide member 47 in the transport direction Y0, and a pressing head 812 similar to the embodiment described above, which is projected from the tip end portion of the arm 98 in the width direction X. Has. Below the vertical direction Z1 of the pressing head 812, a wide-shaped contact portion 815 (see FIG. 11) is provided so as to project in the width direction X of the arm 98. According to this configuration, the pressing member 81 can be supported at a position corresponding to the rib 54 of the supporting member 50 by using the guide member 47 that supports the driven roller 43. Further, the pressing member 97 can be integrally formed with the guide member 47. Further, since the rotation mechanism of the guide member 47 also serves as the movement of the pressing member 97 and the urging force of the pressing member 97 in the pressing direction is given by the urging member 48 of the medium guide mechanism 46, the elastic member 83 It becomes unnecessary and the number of parts can be reduced. Further, the assembling work of assembling the pressing member 97 to the guide member 47 is unnecessary. Therefore, the number of parts can be reduced and the manufacturing cost of the medium guide mechanism 46 including the pressing member 97 can be reduced.

In the above embodiment and the modified examples shown in FIGS. 24 to 26, one or a plurality of pressing members may be provided at positions facing all the concave regions 59.
In FIG. 26, the roller 95 shown in FIG. 25 may be provided instead of the pressing head 812.

The pressing member 81 is not limited to the configuration provided in the guide member, which is an example of the rotating member, and may be supported by, for example, a frame. In this case, the pressing member 81 is movably supported with respect to the frame. Further, an elastic member 83 that urges the pressing member 81 in the pressing direction may be provided.

The height position of the contact portion 815 when the pressing member 81 is in the standby position may be a position above the support surface 54A of the rib 54 on which the medium M is supported. The contact portion 815 of the pressing member 81 may be located at a position closer to the supporting member 50 than the recording head 25. In this case, it is possible to regulate that the medium M floats up to a position where it comes into contact with the recording head 25.

The pressing direction PD is not limited to the direction in which the medium M is pressed against the support surface 54A, and may be the direction in which the lifting of the medium M during transportation can be suppressed.
The arrangement position of the pressing member is not limited to the position where the contact portion 815 faces the support member 50. For example, if there is a region in which the support member does not exist in the range downstream of the nip position N1 of the transport roller pair 41 in the transport direction Y0 and upstream of the recording head 25, the contact portion 815 may face the region. ..

-In the above embodiment, the urging force of the elastic member 83 may be stronger as it is closer to the central portion in the width direction X. According to this configuration, the medium can be curved into an appropriate wave shape even in the vicinity of the central portion in the width direction X.

The pressing member 81 may be controlled by the control unit 100. For example, for the medium M having high rigidity, the pressing member 81 may be retracted to a retracted position above the support surface 54A. For example, the pressing member 81 is driven by the power of an electric motor as a driving source. The control unit 100 controls the electric motor to move the pressing member 81 to the retracted position and the pressing position. The control unit 100 acquires the medium type information included in the print data, and moves the pressing member to one of the retracted position and the pressing position according to the medium type specified based on the medium type information. For example, if the medium type is photo paper, the control unit 100 retracts the pressing member 81 to the retracted position. As a result, the pressing member does not rub the photo paper, so that the photo paper is not easily scratched. If the medium type is plain paper, the pressing member 81 is arranged at the pressing position. As a result, the floating of the medium M can be suppressed.

-In the first embodiment, the configuration may include the first guide surface 816 and not the second guide surface 817. For example, in the recording device 11 having a configuration in which the reverse transport path for reverse transporting the medium M during double-sided recording is different from the transport path during recording, it is sufficient to provide only the first guide surface 816. Further, in a recording device having no double-sided recording function, it is sufficient to provide only the first guide surface 816. Here, examples of the reverse transport route include a route that passes above the transport route and a route that passes below the transport route.

-In the second embodiment, one of the pair of second surfaces 821 may be eliminated. The second surface 821 may be only one on the side where one corner portion 284A of the extending portion 282 hits, or only one second surface 821 may be used in the configuration where only one corner portion 284A hits.

-In the second embodiment, one of the pair of third surfaces 822 may be eliminated. The third surface 822 may be the one on the side where the side end Ms of the medium M hits, or the third surface 822 may be only one in the configuration where only one side end Ms hits.

-In the second embodiment, the pressing member 81 may have a configuration in which only one of the first surface 817A, the second surface 821, and the third surface 822 is provided, and a configuration in which only two are provided. For example, the pressing member 81 may be configured to include only the first surface 817A. Further, the plurality of pressing members 81 may include a pressing member 81 having only the first surface 817A, a pressing member 81 having only the second surface 821, and a pressing member 81 having only the third surface 822.

The support member 50 may have no ribs. In this case, the contact portion 815 of the pressing member 81 when in the standby position may be located above the support surface on which the medium M is supported and below the recording head 25.

The pressing member 81 is not limited to being arranged at a position facing the non-convex concave region of the support member 50 having a concave-convex shape in the width direction X and the vertical direction Z1. The pressing member 81 may be arranged at a position where the contact portion 815 faces the rib 54 of the supporting member 50.

-The number of pressing members may be one. For example, the contact portion 815 may be arranged at a standby position higher than the support surface 54A, and the pressing heads 812 may be connected to one in the width direction X. Further, one pressing member 81 may be provided at the central portion in the width direction X. Even with these configurations, the floating of the medium M can be suppressed.

-The transport unit 40 may use a belt transport method instead of the roller transport method.
The recording device 11 is not limited to a serial printer in which the recording unit 23 reciprocates in the scanning direction X, and may be a lateral printer in which the recording unit 23 can move in two directions, a main scanning direction and a sub-scanning direction. Further, the recording device 11 may be a line printer.

-The recording device 11 may be a multifunction device equipped with a reading unit.
-The medium M is not limited to paper, but may be a flexible plastic film, a cloth, a non-woven fabric, or the like, or may be a laminate.

The recording device 11 is not limited to a recording device that prints on a medium such as paper, and may be a printing machine that prints on cloth.
The recording device 11 is not limited to the inkjet method, and may be a wire impact type recording device or a thermal transfer type recording device. Also in these recording devices, the contact between the medium raised from the support surface and the recording head can be reduced.

-The recording device is not limited to the printer for printing. For example, a liquid material in which particles of a functional material are dispersed or mixed in a liquid is discharged, and an electric wiring pattern or liquid crystal, EL (electroluminescence), surface emission, or the like is used on a substrate which is an example of a medium. It may be the one that manufactures the pixels of the display.

The technical idea grasped from the embodiment and the modified example is described below together with its action and effect.
(A) The recording device includes a feeding unit that feeds a medium, a transport unit that transports the fed medium in a transport direction, a recording unit that records on the medium transported by the transport unit, and the above. A support member having a support surface for supporting the medium in a portion recorded by the recording unit, and a pressing member for pressing the medium toward the support member at a position upstream of the recording position of the recording unit in the transport direction. , And the pressing member is movably provided in a direction intersecting the support surface.

According to this configuration, when the pressing member presses the medium, the floating of the medium can be suppressed, so that the contact with the recording unit due to the lifting of the medium can be reduced. Further, since the position before recording is held upstream of the recording position of the medium in the transport direction, the recorded image is not damaged. Further, since stains such as recording ink are not transferred to the pressing member, it is possible to prevent the stains transferred to the pressing member from being transferred to another medium and stain the other medium. Further, since the pressing member can move in the direction intersecting the support surface, which is the lifting direction of the medium, for example, the medium with high rigidity is less likely to be damaged by retracting in the direction away from the support surface. ..

(B) The recording device may include an elastic member that urges the pressing member in the pressing direction, which is a direction approaching the supporting member.
According to this configuration, the pressing member provided so as to be movable in the direction intersecting the supporting surface is urged in the pressing direction, so that, for example, the medium having high rigidity is retracted in the direction away from the supporting surface. By doing so, the medium is less likely to be damaged.

(C) In the recording device, the transport unit includes a transport roller pair in which a drive roller and a driven roller are paired, and the driven roller is rotatably supported in a state of being supported by a downstream end portion in the transport direction. The rotating member is provided with an urging member that urges the rotating member in a direction in which the driven roller approaches the driving roller, and the holding member is a downstream end of the rotating member in the transport direction. The portion may be provided in a state of being urged by the elastic member in the pressing direction.

According to this configuration, the pressing member can be arranged at a position corresponding to the rib of the supporting member by utilizing the rotating member that supports the driven roller.
(D) In the recording device, the pressing member guides the contact portion that comes into contact with the medium when pressing the medium and the tip of the medium conveyed in the transport direction to the contact portion. It may have an guiding surface.

According to this configuration, even if the tip portion of the medium transported in the transport direction is lifted, the tip portion is guided to the contact portion along the first guide surface of the pressing member. Therefore, it is possible to prevent the tip of the medium from floating and coming into contact with the recording unit.

(E) In the recording device, the pressing member may have a second guiding surface that guides the rear end of the medium, which is reversely conveyed toward the upstream in the conveying direction, to the abutting portion.
According to this configuration, even if the rear end portion of the medium to be reversely conveyed is lifted, the rear end portion is guided to the contact portion along the second guide surface of the pressing member. Therefore, even if the rear end of the medium to be reverse-conveyed is lifted, the medium can be smoothly reverse-conveyed.

(F) In the recording device, the pressing member includes a contact portion that comes into contact with the medium when pressing the medium, and a rotation fulcrum located upstream of the contact portion in the transport direction. The angle at which the second guide surface is upward in the upward direction orthogonal to the second guide surface at the predetermined position with respect to the virtual line connecting the predetermined position on the second guide surface and the rotation fulcrum. May be set to.

According to this configuration, when the medium is reverse-conveyed, the holding member can be lifted by moving the rear end of the highly rigid medium that is reverse-conveyed along the second guide surface. Further, the rear end of the medium M having low rigidity, which is reversely conveyed, moves along the second guide surface, so that the rear end of the medium can be guided to the contact portion. Therefore, the medium M can be smoothly reverse-conveyed.

(G) In the recording device, the pressing member may have a first surface inclined in the same direction as the second guide surface at a position adjacent to the upper side of the second guide surface.
According to this configuration, even if the rear end of the medium to be reverse-conveyed rises higher than the second guide surface due to curl or the like after the recording of the front surface is completed at the time of double-sided recording and before the recording of the back surface is performed, the first After being guided to the second guide surface along the first surface adjacent to the upper side of the second guide surface, it is further guided to the contact portion along the second guide surface. Therefore, even if the rear end of the medium to be reverse-conveyed is excessively lifted due to curl or the like, the medium can be reverse-conveyed by a regular path passing under the pressing member.

(H) In the recording device, a disc tray in which the disc to be recorded on the label surface of the disc is set is reverse-conveyed by the transport unit from the downstream to the upstream in the transport direction. The disc tray has an extension portion that extends upstream in the transport direction, and the holding member extends when the disc tray is reverse-conveyed by the transport portion. It may have a second surface that is formed over a height range including a height position that hits the portion and is inclined toward the center of the width of the holding member toward the downstream side and the lower side in the transport direction.

According to this configuration, when inserting a disc tray in which a disc is set for label recording, the corner of the extension portion is inserted in the process of niping the extension portion of the disc tray into the transport roller pair. When the portion hits the second surface of the pressing member, the pressing member escapes upward.

(I) In the recording device, a side portion of the pressing member adjacent to the first guide surface in the width direction is formed over a height range including a height position when the medium is conveyed. It may have a third surface that is inclined toward the lower side toward the center of the width of the pressing member.

According to this configuration, the side end of the medium conveyed while being displaced in the width direction due to the skew of the medium comes into contact with the third surface of the pressing member. As a result, the pressing member escapes upward. Therefore, the pressing member cannot apply an unreasonable force from the medium and can suppress the deformation of the side end of the medium.

(J) In the recording device, the support member has a plurality of ribs having the support surface on the end surface, which are located at intervals in the width direction intersecting the transport direction, and the ribs other than the plurality of ribs. A plurality of concave regions, which are low-height regions, are provided, and the plurality of pressing members have contact portions that come into contact with the medium when pressing the medium, and the contact portions are said to be the support members. It may be arranged at a position facing the concave region.

According to this configuration, it is possible to prevent the pressing member from coming into contact with the rib. For example, when the ribs are dirty with ink or the like, the stains are transferred to the pressing member in contact with the ribs, and then the stains are transferred from the pressing member to the medium. It is possible to prevent the medium from becoming dirty due to this kind of cause. In addition, the medium can be pressed deeper than the support surface of the rib. For example, the medium can be curved in a wavy shape.

(K) In the recording device, the support member includes a plurality of ribs having the support surface on the end surface, and when the pressing member is in the position most moved in the pressing direction, the contact portion is the rib. The support surface may overlap in the orthogonal direction orthogonal to the support surface and the transport direction.

According to this configuration, since the plurality of pressing members face the concave regions other than the ribs of the supporting member, the medium can be curved in a wavy shape by pressing the medium deeper than the supporting surface. Therefore, it is possible to reduce the contact with the recording unit due to the floating of the medium being conveyed.

(L) In the recording device, the pressing member is between the outermost ribs that support both ends of the maximum width medium in the width direction and the ribs located next to the inside of the ribs in the width direction. It may be provided at least at the position where

According to this configuration, it is possible to form a wave at an end where a wave is likely to be formed on the medium, so that a wave of an appropriate size is surely formed on the medium without giving an excessive load to the medium and is being conveyed. It is possible to suppress the lifting of the medium from the supporting surface. The central portion in the width direction of the medium is less likely to bend when the medium is pressed than the end portion in the width direction of the medium. The medium is more likely to bend when the portion close to the end, which is the free end, is pressed, and the medium is more likely to be curved in a wavy shape.

(M) In the recording device, the transport unit includes a transport roller pair in which a drive roller and a driven roller are paired with each other, and the driven roller is supported at a downstream end portion in the transport direction and is rotatably supported. The rotating member includes a rotating member and an urging member that urges the rotating member in a direction in which the driven roller approaches the driving roller, and the pressing member is a downstream end portion of the rotating member in the transport direction. You may extend from.

According to this configuration, the pressing member can be supported at a position corresponding to the rib of the supporting member by using the rotating member that supports the driven roller. Further, since the urging force of the pressing member is given by the urging member, the elastic member becomes unnecessary and the number of parts can be reduced.

(N) In the recording device, the pressing member has an arm and a contact portion that comes into contact with the medium when the medium is pressed against the tip of the arm, and the contact portion is attached to the arm. On the other hand, it may have a wide shape protruding in the width direction intersecting the transport direction.

According to this configuration, since the contact portion of the pressing member projects in the width direction with respect to the arm, the contact portion of the pressing member has the same dimension in the width direction as the arm, as compared with the configuration of the medium. You can hold a wider area. For example, the medium can be curved into an appropriate wavy shape without making small creases or scratches on the medium.

(O) In the recording device, the pressing member may include a rotatable roller at a portion that presses the medium.
According to this configuration, since the medium is pressed by the roller, the medium is not easily damaged.

(P) In the recording device, the pressing member may be a rotatable flap.
According to this configuration, the medium is pressed by the flaps, and when the medium is strongly pressed, the flaps rotate, so that the medium is not easily damaged.

11 ... Recording device, 12 ... Device body, 13 ... Cover, 15 ... Operation panel, 16 ... Power button, 17 ... Liquid supply source, 18 ... Storage unit, 18a ... Supply cover, 19 ... Window unit, 20 ... Feeding cover , 21 ... Feeding unit, 22 ... Feeding tray, 22A ... Edge guide, 23 ... Recording unit, 24 ... Carriage, 25 ... Recording head, 26 ... Discharge cover, 27 ... Stacker, 28 ... Disc tray, 280 ... Main unit , 281 ... Set part, 282 ... Extension part, 283 ... First extension part, 284 ... Second extension part, 284A ... Corner part, 285 ... Third extension part, 30 ... Main frame, 30A ... Guide Rail, 31 ... moving mechanism, 32 ... carriage motor, 33 ... timing belt, 34 ... linear encoder, 37 ... gap adjustment mechanism, 40 ... transport unit, 41 ... transport roller pair, 410 ... transport drive roller as an example of drive roller , 42 ... discharge roller pair, 420 ... discharge drive roller, 43 ... driven roller, 44 ... driven roller, 45 ... medium guide member, 46 ... medium guide mechanism, 47 ... guide member, 471 ... support shaft, 48 ... urging member , 50 ... Support member, 51 ... 1st support part, 52 ... 2nd support part, 53 ... 3rd support part, 54 ... 1st rib, 54A ... Support surface, 55 ... 2nd rib, 56 ... 3rd rib, 57 ... Substrate, 58 ... Liquid absorber, 59 ... Concave area, 60 ... Maintenance device, 61 ... Cap, 62 ... Wiper, 63 ... Suction pump, 64 ... Waste liquid tube, 65 ... Waste liquid box, 71 ... Conveyor motor, 72 ... Power transmission mechanism, 74 ... Rotary encoder, 741 ... Rotation scale, 742 ... Optical sensor, 75 ... Discharge port, 76 ... Medium detector, 81 ... Holding member, 811 ... Arm, 812 ... Pressing head, 812A ... Top surface, 812N ... pressing head, 813 ... concave, 814 ... concave, 815 ... contact, 816 ... first guide surface, 817 ... second guide surface, 817A ... first surface, 818 ... stopper, 819 ... side surface, 821 ... 2nd surface, 822 ... 3rd surface, 823 ... upper surface, 82 ... urging mechanism, 83 ... elastic member, 91 ... flap as an example of pressing member, 92 ... rotating shaft, 93 ... contact portion, 95 ... pressing member An example of a roller, 97 ... pressing member, 98 ... arm, 100 ... control unit, M ... medium, Ms ... side end, Mr ... rear end, HP ... home position, AH ... anti-home position, Y0 ... transport direction , Y1 ... 1st transport direction, Y2 ... 2nd transport direction, Z1 ... vertical direction, PD ... pressing direction, N1 ... nip position, GA ... area, LD ... disk, SL ... Virtual line, F1, F2, F3, F4, F5 ... Force, H1 ... Height dimension, H2 ... Height dimension, WC ... Width center.

Claims (16)

The feeding department that feeds the medium and
A transport unit that transports the fed medium in the transport direction,
A recording unit that records on the medium transported by the transport unit,
A support member having a support surface for supporting the medium in a portion recorded by the recording unit, and
A pressing member that presses the medium toward the supporting member at a position upstream of the recording position of the recording unit in the transport direction is provided.
A recording device characterized in that the holding member is provided so as to be movable in a direction intersecting the support surface. The recording device according to claim 1, further comprising an elastic member that urges the pressing member in a pressing direction which is a direction approaching the supporting member. The transport unit includes a transport roller pair in which a drive roller and a driven roller form a pair.
A rotating member that is rotatably supported while supporting the driven roller at the downstream end in the transport direction, and
A urging member that urges the rotating member in a direction in which the driven roller approaches the driving roller is provided.
The recording device according to claim 2, wherein the pressing member is provided at a downstream end portion of the rotating member in the conveying direction in a state of being urged by the elastic member in the pressing direction. The pressing member has an abutting portion that comes into contact with the medium when pressing the medium, and a first guiding surface that guides the tip of the medium conveyed in the conveying direction to the abutting portion. The recording device according to any one of claims 1 to 3, wherein the recording device is characterized. The recording device according to claim 4, wherein the pressing member has a second guiding surface that guides the rear end of the medium, which is reversely conveyed toward the upstream in the conveying direction, to the abutting portion. The pressing member includes a rotation fulcrum located upstream of the contact portion in the transport direction.
In the second guide surface, the rear end of the medium abuts on the second guide surface at the predetermined position rather than the virtual line connecting the predetermined position on the second guide surface and the rotation fulcrum. The recording device according to claim 5, wherein the direction of the force in the direction orthogonal to the second guide surface that is sometimes received is set to an angle that receives the upward force on the upper side. The fifth or sixth aspect of the present invention, wherein the pressing member has a first surface that is inclined in the same direction as the second guide surface at a position adjacent to the upper side of the second guide surface. Recording device. The disc tray in which the disc to be recorded on the label surface of the disc is set is reverse-conveyed by the transport unit from the downstream to the upstream in the transport direction.
The disc tray has an extension portion that extends upstream in the transport direction.
The holding member is formed over a height range including a height position where the disc tray is reverse-conveyed by the transport portion and hits the extension portion, and is said to be downstream and downward in the transport direction. The recording device according to any one of claims 4 to 7, wherein the recording device has a second surface that is inclined toward the center of the width of the pressing member. A side portion of the pressing member adjacent to the first guide surface in the width direction is formed over a height range including a height position when the medium is conveyed, and the lower part is the width center of the pressing member. The recording device according to any one of claims 4 to 8, wherein the recording device has a third surface that is inclined in a direction approaching. The support member includes a plurality of ribs having the support surface on the end surface located at intervals in the width direction intersecting the transport direction, and a plurality of regions other than the ribs having a lower height than the ribs. With a concave area,
The claim is characterized in that the pressing member has a contact portion that comes into contact with the medium when the medium is pressed, and the contact portion is arranged at a position facing the concave region of the support member. The recording device according to any one of claims 1 to 9. When the pressing member is in the position most moved in the pressing direction, the contact portion overlaps the supporting surface of the rib in the orthogonal direction orthogonal to the supporting surface and in the transport direction. 10. The recording device according to claim 10. The pressing member is provided at least at a position between the outermost ribs that support both ends of the maximum width medium in the width direction and the ribs located next to the inside of the ribs in the width direction. The recording device according to claim 10 or 11. The transport unit includes a transport roller pair in which a drive roller and a driven roller form a pair.
A rotating member that supports the driven roller at the downstream end in the transport direction and is rotatably supported,
The driven roller is provided with an urging member that urges the rotating member in a direction approaching the driving roller.
The recording device according to any one of claims 1 to 12, wherein the pressing member extends from a downstream end portion of the rotating member in the transport direction. The pressing member has an arm and a contact portion that comes into contact with the medium when the medium is pressed against the tip of the arm.
The record according to any one of claims 1 to 13, wherein the contact portion has a wide shape protruding from the arm in a width direction intersecting the transport direction. Device. The recording device according to any one of claims 1 to 13, wherein the pressing member includes a rotatable roller at a portion that presses the medium. The recording device according to any one of claims 1 to 13, wherein the holding member is a rotatable flap.

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