JP2016183002A - Transport device and image recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transport device which inhibits a failure that a tray is attached to the device while a movable guide member for guiding a transported sheet is kept in an irregular state, and to provide an image recording device including the transport device.SOLUTION: A transport device includes: a transport roller; a shaft holding part which holds a rotary shaft of the transport roller with a sandwich member so that the rotary shaft may move to a separation position; a tray; a first guide member which rotates around the rotary shaft between a guide position and an open position; a guide support part which is provided in the tray and holds the first guide member at the guide position; a rotation restriction part which contacts with a second end part of the first guide member to restrict rotation of the first guide member to the open position; and a release member which may move to a first position P3, at which the rotary shaft is positioned in a contact position, and a second position P4 at which the rotary shaft is positioned in the separation position.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a conveyance device that conveys a sheet and an image recording apparatus including the conveyance device.

  For example, when a paper jam occurs in the image recording apparatus, a process for removing a recording paper jammed in the conveyance path (hereinafter referred to as a jam process) is performed by a user or the like. A part of the transport path is configured so that jam processing can be performed smoothly, and a guide member that guides the recording paper is movable so that a part of the transport path is opened when the paper feed tray is pulled out from the recording device. There is known an image recording apparatus that is provided in the above-described configuration and that allows easy access to the inside of the conveyance path from the outside of the apparatus through the insertion port of the paper feed tray (see Patent Document 1).

JP 2012-153442 A

  As described above, in the image recording apparatus of Patent Document 1, the guide member moves to an open position where a part of the conveyance path is opened in conjunction with the tray being pulled out from the image recording apparatus. When the tray is attached to the image recording apparatus in a state where the guide member is in the open position, the image recording apparatus guides the recording paper in a state in which the guide member is in contact with the tray. It further has a return mechanism that is positioned at the guide position when performing.

  However, in the image recording apparatus of Patent Document 1, the return mechanism does not operate normally when the paper feed tray is mounted, and the paper feed tray remains in an irregular state while the guide member remains in an irregular state. May be attached to. In that case, a part of the transport path is not defined by the guide member, and even if recording paper is supplied from the paper feed tray and image recording is performed, the recording paper may not be transported normally. is there. .

  In the image recording apparatus of Patent Document 1, the guide member moves to the open position even when the paper feed tray is pulled out of the image recording apparatus in order to simply put the recording paper in the paper feed tray. For this reason, a problem that the paper feed tray is mounted on the image recording apparatus is likely to occur while the guide member is in an irregular state.

  In order to prevent the above-described problems, for example, it is conceivable to provide a sensor mechanism for detecting that the guide member is not at the guide position in the image recording apparatus. However, such a sensor mechanism is not essential for an image recording apparatus, and it may be possible to increase the manufacturing cost by providing such a sensor mechanism in the image recording apparatus. In order to suppress unnecessary cost increase, it is desirable to suppress the occurrence of a problem that the tray is mounted on the image recording apparatus while the guide member is in an irregular state, and to reduce or eliminate the necessity of the sensor mechanism. It can be said.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to generate a problem that the tray is mounted on the apparatus while the movable guide member for guiding the sheet being conveyed is in an irregular state. It is an object of the present invention to provide a transport device capable of suppressing the above-described problem and an image recording apparatus including the transport device.

  (1) A transport device according to an embodiment of the present invention includes a transport roller, a sandwiching member that is disposed to face the transport roller, and capable of sandwiching a sheet with the transport roller, and the transport roller includes the transport roller A shaft holding portion that is in contact with the clamping member and is capable of conveying the sheet; and a shaft holding portion that movably holds the rotation shaft of the conveyance roller at a separation position where the conveyance roller is separated from the clamping member; Can be mounted on the apparatus and pulled out from the apparatus, a first guide surface for guiding a sheet conveyed by the conveyance roller, and rotatable about the rotation shaft of the conveyance roller. A guide position that constitutes at least a part of a conveyance path through which a sheet passes, and has a first end portion engaged with the second end portion and a second end portion that is a rotation tip side in rotation about the rotation axis. Open part of the road A first guide member that is pivotable about the rotation shaft at an open position, and the tray, the tray being in contact with the first guide member when the tray is mounted on the apparatus, A guide support portion for holding one guide member at the guide position; and the second end portion of the first guide member in a state where the tray is pulled out from the apparatus and the rotation shaft is at the contact position. The first guide member is restricted from rotating to the open position by abutting with the first position, while the tray is pulled out from the apparatus and the rotation shaft is in the separated position. A rotation restricting portion that allows the guide member to rotate to the open position, a first position where the rotation shaft is the contact position, and a second position where the rotation shaft is the separation position. Possible release members.

  According to the above configuration, the first guide member is a part of the conveyance path in a state where the tray is pulled out from the apparatus, the release member is located at the second position, and the rotation shaft of the conveyance roller is at the separation position. Rotation to an open position that opens the door is allowed. However, even if the tray is pulled out from the apparatus, the first guide member rotates at the second end when the release member is in the first position and the rotation shaft of the transport roller is in the contact position. By abutting the restricting portion, the rotation to the open position is restricted.

  The release member is moved to the second position by the user or the like in order to release the nip state (the state in which the conveyance object can be nipped and conveyed) between the conveyance roller and the clamping member (for example, the driven roller). Therefore, in an image recording apparatus such as an ink jet recording apparatus, the release member is moved to the second position in order to facilitate jamming. On the contrary, when the user simply pulls out the tray from the recording apparatus in order to put the recording paper in the tray, it is not necessary to release the nip state between the conveying roller and the holding member, and the release member is maintained at the first position. . Therefore, in a state where the tray is pulled out from the apparatus, it is necessary to perform jam processing or the like by allowing the first guide member to rotate to the open position only when the release member is in the second position. Only the first guide member can be automatically rotated to the open position. As a result, it is possible to prevent the first guide member from being unnecessarily rotated to the open position, and there is a problem that the paper feed tray is mounted on the recording apparatus while the first guide member is in an irregular state. Can be suppressed. Further, since the guide support portion is provided on the tray, the first guide member can be rotated to the guide position when a part of the transport path is configured by an operation of simply mounting the tray to the apparatus. it can.

  (2) Preferably, in the transport device, the separation position is located in a direction in which the rotation shaft is separated from the rotation restricting portion from the contact position.

  According to the above configuration, when the release member moves to the second position and the rotation shaft of the transport roller moves to the separation position, the first guide member whose first end is engaged with the rotation shaft is prevented from rotating. Move away from the part. As a result, the second end of the first guide member also moves away from the rotation restricting portion, and the state where the rotation restricting portion abuts on the second end and supports the second end is released. The rotation of the first guide member to the open position is allowed. As described above, with a simple configuration, it is possible to realize a mechanism that allows the first guide member to rotate to the open position in a state where the release member is located at the second position.

  (3) Preferably, the transport device has a second guide surface that is disposed adjacent to the first guide surface of the first guide member at the guide position and guides the transported object. A second guide member that constitutes at least another part of the transport path is further provided, and the rotation restricting portion is provided on the second guide member.

  According to the said structure, it is not necessary to ensure the installation space of a rotation control part especially, and size reduction of a conveying apparatus becomes easy.

  (4) Preferably, the conveying device is provided at a contact position of the second end portion of the first guide member with the rotation restricting portion, and is elastically deformed in a direction away from the rotation restricting portion. It further comprises a possible elastic part.

  According to the said structure, the 2nd end part of a 1st guide member will contact | abut via a rotation control part and an elastic part. Accordingly, when an external force sufficient to elastically deform the elastic portion is applied to the first guide member, the elastic portion elastically deforms in a direction away from the rotation restricting portion, and the first guide member is moved by the rotation restricting portion. The rotation restriction state is released. Therefore, for example, in a state where the first guide member is rotated to the open position, an external force that rotates the first guide member to the guide position is applied to the first guide member to elastically deform the elastic portion, The first guide member can be rotated to the guide position.

  As described above, in the state where the tray is pulled out from the apparatus and the release member is located at the second position, the first guide member rotates to the open position. In this state, for example, when the user moves the release member to the first position, the rotation shaft of the transport roller moves to the contact position while the tray is pulled out from the apparatus. When the tray is mounted on the apparatus in this state, the guide support portion provided on the tray comes into contact with the first guide member, and the first guide member is pushed toward the guide position. At this time, since the rotation shaft is located at the contact position, the second end of the first guide member contacts the rotation restricting portion, and the rotation of the first guide member to the guide position is inhibited, It is conceivable that the tray is mounted on the apparatus in an irregular state where the first guide member does not move to the guide position. By providing the elastic portion at the contact position with the rotation restricting portion of the second end portion, the above-described problem can be prevented.

  (5) Preferably, in the conveying apparatus, the conveying device is provided on the first guide surface of the first guide member, and is at a position corresponding to the elastic portion in a width direction orthogonal to a conveying direction in which the sheet is conveyed. And a guide rib that is disposed closer to the first end than the elastic portion and protrudes into the transport path.

  According to the above configuration, when the sheet conveyance direction is the direction from the first end portion to the second end portion of the first guide member, the leading end portion in the sheet conveyance direction is in contact with the elastic portion by the guide rib. Can be prevented. Therefore, it is possible to prevent the sheet conveyance from being hindered by the elastic portion.

  (6) Preferably, in the transport device, the elastic portion has a third end portion closer to the first end portion of the first guide member and a fourth end portion opposite thereto. The guide rib protrudes into the transport path from the third end of the elastic portion.

  According to the above configuration, when the conveyance direction of the sheet is the direction from the first end portion of the first guide member toward the second end portion, the leading end portion in the conveyance direction of the sheet is the upstream end portion in the conveyance direction of the elastic portion. It is possible to prevent contact with the third end portion. Thereby, it can prevent more reliably that conveyance of a sheet | seat is inhibited by an elastic part.

  (7) Preferably, in the transport device, the first guide member rotates from the guide position to the open position by its own weight, and the rotation restricting portion includes the first guide member described above. In the state of being in the guide position, the rotation trajectory of the second end portion below the second end portion of the first guide member and in the process in which the first guide member rotates from the guide position to the open position. Located in the overlapping position.

  According to the said structure, it is not necessary to provide the urging member which urges | biases a 1st guide member to an open position, and can simplify the structure of a conveying apparatus.

  (8) Preferably, the transport device is provided on the tray, and the release member is brought into contact with the release member in a state where the tray is mounted on the device, so that the release member is moved from the first position to the first position. A contact portion for restricting movement to the second position is further provided.

  According to the above configuration, it is possible to prevent the release member from moving to the second position in a state where the tray is mounted on the transport device. Accordingly, it is possible to prevent the rotation shaft of the conveyance roller from moving to the separation position while the tray is mounted on the conveyance device. For example, in an image recording apparatus, the conveyance roller and It is possible to prevent the nip state of the clamping member from being released.

  (9) Preferably, in the transport device, the contact portion contacts the release member in a process in which the tray is moved from a state pulled out of the device to a state attached to the device. Thus, the release member is moved to the first position.

  According to the above configuration, the release member is automatically moved to the first position in conjunction with the mounting of the tray on the apparatus, and the rotation shaft of the transport roller is moved to the contact position. As a result, the conveyance roller and the clamping member that have been released from the nip state can be automatically returned to the nip state by mounting the tray on the apparatus. Therefore, for example, the transport roller and the clamping member can be brought into the nip state by an operation of simply mounting the tray in a state where the release member is moved to the second position for jam processing.

  (10) Preferably, in the transport device, the clamping member is a roller.

  According to the above configuration, since the clamping member is a roller, the sheet can be smoothly conveyed by clamping with the conveying roller.

  (11) An image recording apparatus according to an embodiment of the present invention includes the transport device and a recording unit that records an image on a sheet.

  According to the present invention, it is possible to suppress the occurrence of a problem that the tray is mounted on the apparatus while the movable guide member that guides the sheet being conveyed is in an irregular state.

FIG. 1 is a perspective view of the multifunction machine 10. FIG. 2 is a longitudinal sectional view showing the internal structure of the printer unit 11. FIG. 3 is an exploded perspective view of the base member 70, the side frames 71 and 72, the first support frame 73, and the second support frame 76. FIG. 4 is a perspective view of the base member 70 on which the recording unit 24, the platen 42, the guide rails 43 and 44, and the like are mounted. FIG. 5 is a perspective view showing the positional relationship between the release rod 80 and the reverse conveyance path 65. FIG. 6 is a perspective view of the first guide member 90 located at the guide position as viewed from the first guide surface 90A. FIG. 7 is a perspective view of the first guide member 90 positioned at the guide position as viewed from the opposite side of the first guide surface 90A. FIG. 8 is a plan view (a) and a right side view (b) of the first guide member 90 located at the guide position. FIG. 9 is a longitudinal section showing the positional relationship between the feeding tray 20 in the mounted state and the first guide member 90 positioned at the guide position. FIG. 10 is a plan view showing the positional relationship between the first guide member 90 and the second guide member 100 located at the guide position. FIG. 11 is a longitudinal sectional view showing the positional relationship among the shaft 45A, the first guide member 90, and the rotation restricting portion 103. (a) The shaft 45A is in the contact position P1, and the first guide member 90 The state where the rotation to the open position is restricted by the rotation restricting portion 103, (b) the state where the shaft 45A is at the separation position P2 and the first guide member 90 is located at the open position, and (c) the shaft 45A is A state is shown in which the rotation of the first guide member 90 to the open position is allowed by the rotation restricting portion 103 at the separation position P2.

  Hereinafter, embodiments of the present invention will be described. The embodiment described below is merely an example of the present invention, and it is needless to say that the embodiment of the present invention can be changed as appropriate without departing from the gist of the present invention. Further, in the following description, as shown in FIG. 1, the upper direction 7A and the lower direction 7B are defined on the basis of the state where the multifunction device 10 is installed so as to be usable, and the opening 13 of the multifunction device 10 is provided. The front direction 8A and the rear direction 8B are defined with the surface being the front side (front side), and the left direction 9A and the right direction 9B are defined when the multifunction machine 10 is viewed from the front side (front side).

[Overall configuration of MFP 10]
As shown in FIG. 1, the multifunction machine 10 is formed in a substantially rectangular parallelepiped. The multifunction machine 10 includes a printer unit 11 that records an image on a sheet 12 (an example of a sheet, see FIG. 2) using an inkjet recording method at the bottom. The multifunction machine 10 has various functions such as a facsimile function and a print function. The printer unit 11 is an example of an image recording apparatus that includes a transport device.

[Case 14]
As shown in FIG. 1, the printer unit 11 includes a housing 14 having an opening 13 formed on the front surface. A main transport path 65 and a reverse transport path 66 (see FIG. 2), which will be described later, are formed inside the housing 14. The housing 14 is, for example, an exterior cover that accommodates each component of the printer unit 11 in its internal space.

[Feed tray 20, discharge tray 21]
As shown in FIGS. 1 and 2, the printer unit 11 includes a feeding tray 20 and a discharge tray 21. The feeding tray 20 and the discharge tray 21 are pulled out from the printer unit 11 by the movement in the front direction 8A through the opening 13 formed on the front surface of the printer unit 11, and are attached to the printer unit 11 by the movement in the rear direction 8B. The feed tray 20 supports a plurality of stacked sheets 12. The discharge tray 21 is disposed on the feeding tray 20. The discharge tray 21 supports the paper 12 discharged by the discharge roller unit 55.

  The feeding tray 20 is formed in a box shape with the top opened. As shown in FIG. 9, the feeding tray 20 is erected in the upward direction 7A and in the forward direction 8A and the backward direction 8B at both ends of the bottom plate 20C and the left direction 9A and the right direction 9B of the bottom plate 20C. A pair of side plates 20D extending in the forward direction 8A of the bottom plate 20C, and a front plate 20E standing in the upward direction 7A and extending in the left direction 9A and the right direction 9B. In FIG. 9, only the side plate 20D located in the right direction 9B is shown among the pair of side plates 20D. A guide support portion 22 is provided so as to protrude in the upward direction 7A at the upper portion of each of the pair of side plates 20D and at a position closer to the rear direction 8B than the central portion of the front direction 8A and the rear direction 8B.

  The guide support portion 22 is disposed at a position where it can contact the first guide member 90 located at the guide position on the feeding tray 20 mounted on the printer portion 11. The guide support portion 22 has an abutting surface that abuts on the leg portion 94 of the first guide member 90 on the upper portion, and the first guide member 90 is brought into contact with the leg portion 94 by abutting the abutting surface on the leg portion 94. Hold in the guide position. The first guide member 90 defines at least a part of the conveyance path of the paper 12 in a state where the first guide member 90 is held at the guide position by the guide support portion 22. At this time, the first guide member 90 constitutes at least a part of the conveyance path of the paper 12. Hereinafter, when the first guide member 90 is positioned at the guide position is also referred to as a demarcated state, and in the description of each part of the first guide member 90, the upper and lower relationships and the front-rear relationship are indicated unless otherwise specified. 1 Follow the vertical relationship and the longitudinal relationship of the guide member 90.

  The guide support portion 22 abuts on the leg portion 94 of the first guide member 90 located at the open position (see FIG. 11B) in the process in which the feeding tray 20 is attached to the printer portion 11, The corner portion in the rear direction 8B of the surface is brought into sliding contact with the leg portion 94, and the first guide member 90 is rotated to the guide position. In order to facilitate the sliding contact, the corner portion is rounded, and the sliding contact portion 94A (see FIG. 8B) provided on the surface of the leg portion 94 in the downward direction 7B is in the rear direction 8B. The end is formed on a slope located in the lower direction 7B from the front end 8A.

  As shown in FIG. 2, the feeding tray 20 abuts a later-described release rod 80 in the mounted state, and the release rod 80 is moved from the first position P3 (the position indicated by the solid line) to the second position P4 (2 It has a contact portion 20B that restricts movement to a position indicated by a chain line. The contact portion 20B also has a function of moving the release rod 80 to the first position P3 by contacting the release rod 80 at the second position P4 in the process of mounting the feeding tray 20 on the printer unit 11. doing.

[Feeding unit 15]
As shown in FIG. 2, the printer unit 11 includes a feeding unit 15 that feeds the paper 12 supported by the feeding tray 20 to the main conveyance path 65. The feeding unit 15 includes a feeding roller 25, a feeding arm 26, and a shaft 27. The feed roller 25 is rotatably supported at the distal end portion of the feed arm 26. The feeding roller 25 is capable of forward rotation in which the driving force of a motor (not shown) is transmitted and the sheet 12 supported on the feeding tray 20 is conveyed in the main conveying direction 16A. The feeding arm 26 is rotatably supported on a shaft 27 supported by the frame of the printer unit 11. The feeding arm 26 is urged to rotate toward the feeding tray 20 by its own weight or an elastic force by a spring or the like.

[Main transport path 65, reverse transport path 66]
The main transport path 65 and the reverse transport path 66 are spaces through which the paper 12 can pass, and are defined by a plurality of path members. The main conveyance path 65 is a path from the rear end of the feeding tray 20 to the discharge tray 21 via the conveyance roller unit 54, the recording unit 24, the discharge roller unit 55, and the reverse roller unit 56. The main conveyance path 65 according to the present embodiment includes a curved conveyance path and a linear conveyance path that extends linearly. The curved conveyance path is a path that U-turns to the conveyance roller unit 54 while extending upward from below on the rear side of the printer unit 11. The straight conveyance path is a path from the conveyance roller unit 54 to the discharge tray 21 through the recording unit 24, the discharge roller unit 55, and the reverse roller unit 56. The main transport direction 16A and the reverse transport direction 16B of the paper 12 in the main transport path 65 are indicated by the dashed-dotted arrows in FIG.

  The reverse conveyance path 66 is a path through which the paper 12 is conveyed in the reverse conveyance direction 16 </ b> C and led again to the main conveyance path 65 in order to reverse the front and back of the paper 12 on the main conveyance path 65. The reverse conveyance path 66 according to the present embodiment branches from the main conveyance path 65 at a branch position 66A between the discharge roller portion 55 and the reverse roller portion 56, and is a merging position upstream of the conveyance roller portion 54 in the main conveyance direction 16A. 66B is a path that merges with the main transport path 65. The reverse conveyance path 66 reaches from the branch position 66A to the merging position 66B through the lower side of the main conveyance path 65. Note that the reverse conveyance direction 16C of the paper 12 in the reverse conveyance path 66 is indicated by a two-dot chain arrow in FIG. In the present embodiment, the reverse conveyance path 66 is shown as an example of “conveyance path”, and the reverse conveyance direction 16C is shown as an example of “conveyance direction”.

[Base member 70]
As shown in FIGS. 3 and 4, the printer unit 11 includes a base member 70. The base member 70 is integrally formed of, for example, a resin material. Further, the surface in the downward direction 7B of the base member 70 is the bottom surface of the printer unit 11 and constitutes a placement surface that comes into contact with the top surface of the desk when the multifunction machine 10 is placed on a desk or the like. The base member 70 has a space for accommodating the feeding tray 20 and the discharge tray 21 and supports each component of the printer unit 11 to be described later. Further, the base member 70 functions as a path member that defines a part of the main transport path 65 and the reverse transport path 66.

[Side frames 71, 72, first support frame 73, second support frame 76]
As shown in FIG. 3, the printer unit 11 includes a pair of side frames 71 and 72, a first support frame 73, and a second support frame 76. The pair of side frames 71 and 72, the first support frame 73, and the second support frame 76 are made of, for example, a metal material. In the present embodiment, an example in which the first support frame 73 and the second support frame 76 are separated will be described. However, the first support frame 73 and the second support frame 76 may be integrated.

  The pair of side frames 71 and 72 are arranged to face the left direction 9 </ b> A and the right direction 9 </ b> B with the main transport path 65 interposed therebetween. The side frames 71 and 72 are supported by the base member 70. The side frames 71 and 72 include a first support frame 73, a second support frame 76, a shaft 62A of a discharge roller 62, a platen 42, a shaft 45A of a reversing roller 45, a first guide member 90, and a second guide member. 100 and guide rails 43 and 44 are supported.

  The first support frame 73 is supported by the side frames 71 and 72 between the pair of side frames 71 and 72. The first support frame 73 supports a roller holder 50 described later. The first support frame 73 is provided with a plurality of through holes 74 penetrating in the thickness direction at a plurality of positions separated in the left direction 9A and the right direction 9B. Further, the first support frame 73 is provided with a through-hole 75 that penetrates in the thickness direction at the center in the left direction 9A and the right direction 9B and extends in the front direction 8A and the rear direction 8B.

  The second support frame 76 is supported by the side frames 71 and 72 in front of the first support frame 73. The second support frame 76 supports the pair of release rods 80A and 80B and a control board (not shown).

[Release rod 80]
As shown in FIG. 3, the printer unit 11 includes a pair of release rods (an example of a release member) 80A and 80B (these may be collectively referred to as “release rod 80”). The release rod 80 is a long plate-shaped member that is long in the front direction 8A and the rear direction 8B. As shown in FIG. 5, the pair of release rods 80 </ b> A and 80 </ b> B are disposed to face the left direction 9 </ b> A and the right direction 9 </ b> B with the reverse conveyance path 66 interposed therebetween. The release rod 80 is movable along the front direction 8A and the rear direction 8B to a first position P3 and a second position P4 located in the front direction 8A from the first position P3. The first position P3 is a predetermined position of the release rod 80 during image recording. The second position P4 is a position of the release rod 80 suitable for performing jam processing or the like. The release rod 80 moves in the forward direction 8 </ b> A and the backward direction 8 </ b> B while slidingly contacting the corresponding side frames 71, 72 and the second support frame 76.

  As shown in FIG. 5, the release rod 80 includes a platen support portion 82, a discharge roller support portion 83, and a reverse roller support portion 84. In this embodiment, the platen support portion 82, the discharge roller support portion 83, and the reverse roller support portion 84 are arranged in this order from the rear portion to the front portion of the release rod 80 attached to the printer portion 11.

  The platen support portion 82 has an upper stage surface 82A that supports the platen 42 at the first position P3 of the release rod 80, and a lower stage surface 82B that supports the platen 42 at the second position P4 of the release rod 80. The discharge roller support portion 83 has an upper step surface 83A that supports the shaft 62A of the discharge roller 62 at the first position P3 of the release rod 80, and a lower step surface 83B that supports the shaft 62A at the second position P4 of the release rod 80. . The reverse roller support portion 84 has an upper step surface 84A that supports the shaft 45A of the reverse roller 45 at the first position P3 of the release rod 80, and a lower step surface 84B that supports the shaft 45A at the second position P4 of the release rod 80. . In the present embodiment, the reversing roller 45 is shown as an example of a “conveying roller”, and the shaft 45A is shown as an example of a “rotating shaft”.

  Furthermore, the release rod 80 has a grip portion 88 that is gripped by the user. The grip portion 88 is gripped by the user through the opening 13 formed on the front surface of the printer portion 11. When the user holding the grip portion 88 pulls the release rod 80 forward, the release rod 80 moves from the first position P3 to the second position P4. Further, when the user holding the grip portion 88 pushes the release rod 80 backward, the release rod 80 moves from the second position P4 to the first position P3.

[Conveying roller unit 54, discharging roller unit 55, reverse roller unit 56, re-conveying roller unit 57]
As shown in FIG. 2, the printer unit 11 includes a transport roller unit 54 that sandwiches and transports the paper 12, a discharge roller unit 55, a reverse roller unit 56, and a re-transport roller unit 57. Each of the transport roller unit 54, the discharge roller unit 55, the reverse roller unit 56, and the re-transport roller unit 57 is configured by a pair of opposed rollers. The conveyance roller unit 54, the discharge roller unit 55, and the reverse roller unit 56 are provided in the main conveyance path 65. On the other hand, the re-conveying roller unit 57 is provided in the reverse conveying path 66.

  As illustrated in FIG. 2, the transport roller unit 54 is disposed between the merging position 66 </ b> B and the recording unit 24 in the main transport direction 16 </ b> A. The conveyance roller unit 54 includes a conveyance roller 60 that rotates when the driving force of the motor is transmitted, and a plurality of pinch rollers 61 (an example of a driven roller) that rotates with the rotation of the conveyance roller 60. The transport roller 60 is capable of forward rotation for transporting the paper 12 in the main transport direction 16 </ b> A and reverse rotation opposite to the forward rotation. As shown in FIG. 3, the plurality of pinch rollers 61 are arranged adjacent to each other in the left direction 9 </ b> A and the right direction 9 </ b> B and each facing the conveying roller 60. Further, the plurality of pinch rollers 61 are divided and supported by a plurality of roller holders 50. The pinch roller 61 is configured to be movable between a contact position where the pinch roller 61 is in contact with the conveyance roller 60 and a separation position where the pinch roller 61 is separated from the conveyance roller 60. When the pinch roller 61 is in the contact position, the transport roller unit 54 can sandwich and transport the paper 12.

  The plurality of roller holders 50 are supported by the first support frame 73 at positions adjacent to the left direction 9A and the right direction 9B. Each roller holder 50 supports one or a plurality of pinch rollers 61 so as to be rotatable and movable. The roller holder 50 is urged by a coil spring 52 in a direction to bring the pinch roller 61 into a contact position.

  As shown in FIG. 2, the discharge roller portion 55 is disposed between the recording portion 24 and the branch position 66A in the main transport direction 16A. The discharge roller unit 55 includes a discharge roller 62 that rotates when the driving force of the motor is transmitted thereto, and a plurality of spurs 63 that rotate with the rotation of the discharge roller 62. The discharge roller 62 can rotate forward and backward in the same manner as the transport roller 60. The plurality of spurs 63 are disposed adjacent to each other in the left direction 9 </ b> A and the right direction 9 </ b> B and each face the discharge roller 62. The shaft 62A of the discharge roller 62 is supported by the side frames 71 and 72 and the discharge roller support portion 83 of the release rods 80A and 80B.

  The discharge roller 62 is configured to be movable to a contact position that contacts the spur 63 and a separated position that is separated from the spur 63 as the release rod 80 moves. The release rod 80 at the first position P3 supports the shaft 62A of the discharge roller 62 with the upper surface 83A of the discharge roller support portion 83, thereby bringing the discharge roller 62 into a contact position. At this time, the discharge roller unit 55 can sandwich and convey the paper 12. On the other hand, the release rod 80 at the second position P4 supports the shaft 62A of the discharge roller 62 with the lower surface 83B of the discharge roller support portion 83, thereby bringing the discharge roller 62 into the separated position.

  As shown in FIG. 2, the reversing roller unit 56 is disposed downstream of the branch position 66A in the main transport direction 16A. The reversing roller unit 56 includes a reversing roller 45 that rotates when the driving force of the motor is transmitted, and a plurality of spurs 46 that rotate with the rotation of the reversing roller 45. The reverse roller 45 can rotate forward and backward in the same manner as the transport roller 60. The plurality of spurs 46 are disposed adjacent to each other in the left direction 9 </ b> A and the right direction 9 </ b> B and each face the reversing roller 45. In the present embodiment, the spur 46 is shown as an example of a “clamping member”.

  As shown in FIG. 3, the shaft 45 </ b> A of the reversing roller 45 has a contact position where the reversing roller 45 abuts the spur 46 by a long hole 78 provided in the side frames 71 and 72, and the reversing roller 45 It is held so as to be movable away from the spur 46. The separation position is located in the downward direction 7B from the contact position and is located in a direction in which the shaft 45A is separated from the rotation restricting portion 103 described later. The long hole 78 is an example of the shaft holding portion. The release rod 80 at the first position P3 supports the shaft 45A by the upper surface 84A of the reverse roller support portion 84, thereby bringing the reverse roller 45 into contact with the spur 46. At this time, the reversing roller unit 56 can sandwich and convey the paper 12. The release rod 80 at the second position P4 supports the shaft 45A by the lower surface 84B of the reverse roller support portion 84, thereby separating the reverse roller 45 from the spur 46.

  Note that it is not essential for the release rod 80 to support the shaft 45A. For example, the long hole 78 is provided with two support portions that support the shaft 45A at the contact position and the separation position, and the first position P3 of the release rod 80 and The shaft 45A may be moved between the two support portions by moving to the second position P4.

  As shown in FIG. 2, the re-conveying roller unit 57 is disposed in the reverse conveying path 66 between the branch position 66A and the merging position 66B. The re-conveying roller unit 57 includes a re-conveying roller 68 that rotates when the driving force of the motor is transmitted, and a driven roller 69 that rotates along with the rotation of the re-conveying roller 68. The re-conveying roller unit 57 is capable of normal rotation for conveying the nipped paper 12 in the reverse conveying direction 16C.

  The printer unit 11 has a driving force transmission mechanism (not shown). The driving force transmission mechanism transmits the driving force of the motor to the feeding roller 25, the conveyance roller 60, the discharge roller 62, the reverse roller 45, and the re-conveyance roller 68. The driving force transmission mechanism is configured by combining all or part of a gear, a pulley, an endless annular belt, a planetary gear mechanism (pendulum gear mechanism), a one-way clutch, and the like. The feeding roller 25, the transport roller 60, the discharge roller 62, the reverse roller 45, and the re-transport roller 68 may be driven by a common motor, or may be individually driven by a plurality of motors.

[Recording unit 24]
As shown in FIG. 2, the recording unit 24 is disposed between the conveyance roller unit 54 and the discharge roller unit 55 in the main conveyance direction 16 </ b> A. The recording unit 24 faces the platen 42 in the upper direction 7A and the lower direction 7B. The recording unit 24 includes a carriage 23 and a recording head 39.

  As shown in FIGS. 2 and 4, the carriage 23 is supported by guide rails 43 and 44 that extend in the left direction 9 </ b> A and the right direction 9 </ b> B at positions spaced apart in the front direction 8 </ b> A and the rear direction 8 </ b> B. Yes. The guide rails 43 and 44 are supported by a pair of side frames 71 and 72. The carriage 23 is connected to a known belt mechanism provided on the guide rail 44. Then, the carriage 23 connected to the belt mechanism that rotates around the transmission of the driving force of the motor can reciprocate in the main scanning direction along the left direction 9A and the right direction 9B.

  The recording head 39 is mounted on the carriage 23 as shown in FIG. A plurality of nozzles (not shown) are formed on the lower surface of the recording head 39. The recording head 39 ejects ink as fine ink droplets from the nozzles. In the process in which the carriage 23 moves in the left direction 9A and the right direction 9B, the recording head 39 discharges ink droplets onto the paper 12 supported by the platen 42. As a result, an image is recorded on the paper 12.

[Platen 42]
As shown in FIG. 2, the platen 42 is disposed between the transport roller unit 54 and the discharge roller unit 55 in the main transport direction 16A. The platen 42 faces the recording unit 24 in the upper direction 7A and the lower direction 7B. The platen 42 supports the sheet 12 conveyed by the conveyance roller unit 54 from below. The platen 42 is supported by the pair of side frames 71 and 72 and the pair of release rods 80A and 80B by the platen support portion 82.

  As the release rod 80 moves, the platen 42 can change state between a first state facing the recording unit 24 at a predetermined interval and a second state separated from the recording unit 24 from the first state. It is configured. The release rod 80 at the first position P3 places the platen 42 in the first state by supporting the platen 42 on the upper surface 82A of the platen support portion 82. At this time, the sheet 12 on the platen 42 and the recording unit 24 face each other with an interval suitable for image recording. On the other hand, the release rod 80 at the second position P4 places the platen 42 in the second state by supporting the platen 42 with the lower step surface 82B of the platen support portion 82.

[Flap 35, opposing member 36]
As shown in FIG. 2, the printer unit 11 includes a flap 35 and a facing member 36 that face each other in the upper direction 7 </ b> A and the lower direction 7 </ b> B between the discharge roller unit 55 and the reverse roller unit 56 in the main transport direction 16 </ b> A. .

  The flap 35 is supported by the platen 42 so as to be rotatable to a first rotation position and a second rotation position. The flap 35 rotates from the first rotation position to the second rotation position by being in contact with the paper 12. Further, the flap 35 is biased toward the first rotation position by a biasing member such as a coil spring 37.

  As shown in FIG. 2, the flap 35 at the first rotation position abuts against the opposing member 36 and closes the main conveyance path 65, and the sheet 12 conveyed in the reverse conveyance direction 16 </ b> B by the reverse roller unit 56. Guide to the reverse conveyance path 66. The flap 35 in the second rotation position is separated from the facing member 36 and allows the paper 12 to pass through the main conveyance path 65.

[First guide member 90]
As shown in FIG. 2, the printer unit 11 includes a first guide member 90. The first guide member 90 is disposed in the downward direction 7B of the upstream portion in the reverse conveyance direction 16C of the reverse conveyance path 66. In the first guide member 90, the surface in the upward direction 7 </ b> A in the defined state (see FIG. 9) located at the guide position is the first guide surface 90 </ b> A for guiding the paper 12 conveyed in the reverse conveyance direction 16 </ b> C by the reverse roller 45. It is composed. In the state where the first guide member 90 is located at the open position (see FIG. 11B), a part of the reverse conveyance path 66 is opened without being defined by the first guide member 90. Therefore, a state where the first guide member 90 is located at the open position is referred to as an open state.

  As shown in FIGS. 6 to 8, the first guide member 90 is a thin plate-like plate-like portion whose overall shape is a rectangle with long sides arranged along the left direction 9 </ b> A and the right direction 9 </ b> B. 91. There is a first guide surface 90A on the surface of the plate-shaped portion 91 in the upward direction 7A. A plurality of reinforcing ribs 91 </ b> C extending in the vertical and horizontal directions are provided on the surface opposite to the surface in the upward direction 7 </ b> A (hereinafter also referred to as the back surface). At the ends of the plate-like portion 91 in the left direction 9A and the right direction 9B, a supported portion 91B for supporting the first guide member 90 by the shaft 45A and the guide support portion 22 inside the printer portion 11 is provided in the left direction 9A. And it is extended in the right direction 9B. An engaging portion 93 that can engage with the shaft 45A of the reversing roller 45 is provided at the end portion of the supported portion 91B in the front direction 8A. A leg portion 94 that can come into contact with the guide support portion 22 is provided at an end portion in the rear direction 8B of the supported portion 91B.

  A first rib 92A is provided on the upper surface of the plate-like portion 91 constituting the first guide surface 90A. A plurality of first ribs 92A extend in the front direction 8A and the rear direction 8B at positions spaced apart in the left direction 9A and the right direction 9B. The first rib 92A protrudes from the upper surface of the plate-like portion 91 to the reverse conveying path 66 in the upward direction 7A. The first rib 92A guides the sheet 12 conveyed through the reverse conveying path 66 at its protruding tip.

[Engagement part 93]
The engaging portion 93 has a U-shaped concave portion 93 a that fits with the shaft 45 </ b> A of the reversing roller 45. A claw portion 93b is provided at a position facing the two open end portions of the U-shaped recess 93a. The claw portion 93b comes into contact with the outer peripheral surface of the shaft 45A in a state where the shaft 45A is fitted in the recess 93a. In this state, the outer peripheral surface of the shaft 45A can be in sliding contact with the inner surface of the recess 93a. As a result, the first guide member 90 has a first end 90B, which is an upstream end in the reverse conveyance direction 16C, rotatably engaged with the shaft 45A. The first guide member 90 is attached to the shaft 45A by, for example, pressing the engaging portion 93 downward 7B with the opening of the recess 93a facing downward 7B and the two claw portions 93b contacting the shaft 45A. Is done. Removal of the first guide member 90 from the shaft 45A is performed, for example, by applying an upward force 7A to the engaging portion 93 with the opening of the recess 93a directed downward 7B.

  As shown in FIGS. 7 and 8, the leg portion 94 is provided in the process of attaching the feeding tray 20 to the printer unit 11 on the surface in the downward direction 7 </ b> B and the process of pulling out the feeding tray 20 from the printer unit 11. , Has a sliding contact portion 94A that is in sliding contact with the guide support portion 22. The sliding contact portion 94A has a slope whose end in the rear direction 8B is positioned in the downward direction 7B from the end in the front direction 8A. The sliding contact portion 94A protrudes in the downward direction 7B from the end portion of the downward direction 7B of each reinforcing rib 91C provided on the surface in the downward direction 7B of the plate-like portion 91. In FIG. 9, the first guide member 90 is guided by the sliding contact between the sliding contact portion 94 </ b> A and the guide support portion 22 in the process in which the feeding tray 20 attached to the printer unit 11 moves in the backward direction 8 </ b> B. The state rotated to the position is shown.

[Elastic part 95]
As shown in FIGS. 6 to 8, the first guide member 90 has an elastic portion 95 provided at an end portion in the rear direction 8 </ b> B of the plate-like portion 91. A plurality of elastic portions 95 are provided at positions spaced apart in the left direction 9A and the right direction 9B at the end of the plate-shaped portion 91 in the rear direction 8B. The elastic part 95 is arranged inside an enclosure 91A that surrounds the elastic part 95 in the left direction 9A, the right direction 9B, and the front direction 8A. The elastic portion 95 has a plate-like spring portion 95A that protrudes in the right direction 9B or the left direction 9A from the left side surface or the right side surface of the surrounding portion 91A. In the vicinity of the tip portion 95C of the spring portion 95A, a contact portion 95B that can contact a later-described rotation restricting portion 103 by a surface in the downward direction 7B is provided. The contact portion 95B is a substantially square plate-like member that is perpendicular to the upper direction 7A and the lower direction 7B and has one side arranged along the front direction 8A and the rear direction 8B.

  Further, a stopper portion 95D that can come into contact with the distal end portion 95C is provided on the right side surface or the left side surface of the surrounding portion 91A in the rear direction 8B from the distal end portion 95C of the spring portion 95A. The stopper portion 95D prevents the contact portion 95B from rebounding. In addition, the elastic member 95 is not provided at the end portion of the plate-like portion 91 in the rear direction 8B, and the end portion of the plate-like portion 91 in the rear direction 8B is directly brought into contact with the rotation restricting portion 103. The rotation of the guide member 90 to the open position can also be restricted.

[Second rib 92]
A second rib 92B (an example of a guide rib) is provided on the upper surface 7A of the plate-like portion 91 constituting the first guide surface 90A. The second rib 92B is disposed at a position corresponding to the elastic portion 95 in the left direction 9A and the right direction 9B (an example of the width direction). The second rib 92 </ b> B protrudes from the surface 7 </ b> A in the upward direction 7 </ b> A to the reverse conveyance path 66 in the upward direction 7 </ b> A. The second rib 92B guides the sheet 12 conveyed through the reverse conveying path 66 at the protruding tip. The second rib 92B is higher than the end of the contact portion 95B closer to the first end 90B of the first guide member 90 (an upstream end in the reverse conveyance direction 16C and an example of the third end). Projecting to the reverse conveyance path 66.

[Second guide member 100]
As illustrated in FIG. 2, the printer unit 11 includes a second guide member 100. The second guide member 100 is disposed adjacent to the first guide member 90 downstream of the first guide member 90 in the reverse conveyance direction 16C, and is a second guide surface 100A (see FIG. 9) that is a surface in the upward direction 7A. ) Guides the paper 12 conveyed in the reverse conveyance direction 16C by the reverse roller 45. The second guide surface 100A of the second guide member 100 is adjacent to the first guide surface 90A of the first guide member 90 in the reverse conveyance direction 16C. The second guide member 100 defines a downstream portion from the first guide member 90 in the reverse conveyance direction 16 </ b> C of the reverse conveyance path 66, and constitutes another part of the reverse conveyance path 66.

[Rotation restricting portion 103]
As shown in FIG. 10, the second guide member 100 is a plate extending in the upward direction 7A and the downward direction 7B at the end adjacent to the second end 90C of the first guide member 90 in the reverse conveyance direction 16C. A shaped member 101 is provided. A plurality of plate-like members 101 are provided at spaced positions in the left direction 9A and the right direction 9B. The plate-like member 101 has an end surface in the upward direction 7A extending along the reverse conveyance direction 16C, and the end surface constitutes a part of the second guide surface 100A. Among the plurality of plate-like members 101, in the left direction 9A and the right direction 9B, the corner portions of the front direction 8A and the upward direction 7A of the plate-like member 101 arranged at positions corresponding to the elastic portions 95 of the first guide member 90 Constitutes the rotation restricting portion 103.

  The plate-like member 101 having the rotation restricting portion 103 may have the same shape as the other plate-like members 101, and the corner portions in the forward direction 8A and the upward direction 7A corresponding to the turn restricting portion 103 are You may protrude in the reverse conveyance direction 16C upstream from the corner | angular part of the front direction 8A and the upper direction 7A of the other plate-shaped member 101. FIG. In the former case, the elastic portion 95 may be protruded downstream from the downstream end in the reverse conveyance direction 16C of the plate-like portion 91 in the reverse conveyance direction 16C. In the latter case, the elastic portion 95 may be located at the same position as the downstream end of the plate-shaped portion 91 in the reverse conveyance direction 16C in the reverse conveyance direction 16C.

  As shown in FIG. 11A, the rotation restricting portion 103 is formed by the elastic portion 95 of the first guide member 90 positioned in the demarcated state when the feeding tray 20 is pulled out from the printer portion 11. It contacts the contact portion 95B from below. Thereby, the rotation of the first guide member 90 to the open position is restricted, and the first guide member 90 is restricted from being in the open state (see FIG. 11B). In the state shown in FIG. 11A, the first guide member 90 rotates in a state where it is slightly rotated from the guide position (defined state) when supported by the guide support portion 22 to the open position. Movement is regulated. Such a state of the first guide member can be referred to as a rotation restricting state in distinction from the demarcated state. In FIG. 11A, the shaft 45A at the separation position P2 is indicated by a broken line.

[Movement of release rod 80]
Hereinafter, the positional relationship among the first guide member 90, the elastic portion 95, the second guide member 100, and the rotation restricting portion 103 when the release rod 80 is moved will be described. In addition, since the state change of the discharge roller 62 and the platen 42 accompanying the movement of the release rod 80 has already been described, detailed description thereof will not be repeated.

  As shown in FIG. 2, when the release rod 80 is located at the first position P3 and the feeding tray 20 is in the mounted state, the shaft 45A is located at the contact position, as shown in FIG. The first guide member 90 is located in a delimited state. In the state of FIG. 9, the leg portion 94 of the first guide member 90 abuts on the guide support portion 22 of the feeding tray 20, and the first guide member 90 is held at the guide position by the guide support portion 22 and is in a demarcated state. ing.

  In this state, when the feed roller 25, the transport roller 60, the discharge roller 62, and the reverse roller 45 are rotated forward, the paper 12 supported by the feed tray 20 is transported in the main transport direction 16A through the main transport path 65. The Next, the flap 35 pressed against the leading end of the paper 12 on which the image is recorded on the surface by the recording unit 24 (refers to the “downstream end in the main transport direction 16A”) resists the biasing force of the elastic member. To rotate from the first rotation position to the second rotation position. Next, the flap 35 is moved from the second rotation position to the first rotation position by the rear end of the paper 12 (referring to the “upstream end in the main transport direction 16 </ b> A”) passing through the position of the flap 35. Return.

  Next, when the reversing roller 45 is rotated in the reverse direction, the sheet 12 sandwiched by the reversing roller unit 56 and conveyed in the reverse conveying direction 16B has the first rotation position with the upstream end in the main conveying direction 16A leading. Is guided to the reverse conveyance path 66 by the flap 35 and reaches the re-conveyance roller unit 57. Next, when the re-conveying roller 68 is rotated forward, the sheet 12 sandwiched between the re-conveying roller portions 57 is conveyed in the reverse conveying path 66 in the reverse conveying direction 16C, and passes through the main conveying path 65 from the merging position 66B. And reaches the conveying roller section 54. Then, when the transport roller 60, the discharge roller 62, and the reverse roller 45 are rotated forward again and an image is recorded on the recording unit 24, the image is recorded on the back surface of the paper 12 with the front and back reversed, and the discharge tray 21 is recorded. Discharged.

  When the feeding tray 20 is pulled out from the state of FIG. 9, as shown in FIG. 11A, the first guide member 90 is not supported by the guide support portion 22 and tends to rotate to the open position. . At this time, when the elastic portion 95 contacts the rotation restricting portion 103, the rotation of the first guide member 90 to the open position is restricted, and the first guide member 90 enters the rotation restricted state.

  In the state shown in FIG. 11A, when the release rod 80 is pulled from the first position P3 to the second position P4, for example, by the user in the forward direction 8A, as shown in FIG. 11C. In addition, the shaft 45A moves to the separation position P2. As a result, the elastic portion 95 moves away from the rotation restricting portion 103, and the state where the rotation restricting portion 103 is in contact with the contact portion 95B of the elastic portion 95 from the lower direction 7B is released. As a result, the first guide member 90 is allowed to rotate to the open position, and is rotated to the open position by its own weight, for example, as shown in FIG. . In FIGS. 11B and 11C, the shaft 45A at the contact position P1 is indicated by a broken line.

[Operational effects of this embodiment]
According to the present embodiment, for example, when the feeding tray 20 is pulled out from the printer unit 11 for jam processing and the release rod 80 is moved to the second position P4, the first guide member 90 is rotated to the open position. Then, it becomes an open state (refer FIG.11 (b)). This facilitates jam processing. On the other hand, in the state where the feeding tray 20 is pulled out simply to put the paper 12 and the release rod 80 is maintained at the first position P3, the first guide member 90 does not rotate to the open position and is defined. It becomes the rotation control state (refer Fig.11 (a)) near a state. Therefore, since the first guide member 90 is rotated to the open position only when jamming is necessary, the first guide member 90 can be prevented from unnecessarily rotating to the open position. Occurrence of a problem that the feed tray 20 is mounted on the printer unit 11 can be suppressed while the first guide member 90 is in an irregular state.

  The rotation restricting portion 103 has a simple configuration in which a plate-like member is simply protruded toward the first guide member 90, and the rotation restricting portion 103 and the shaft 45A are separated from the contact position P1. The above-described effect can be realized by a simple configuration that is provided so as to be movable to the position P2. Therefore, the manufacturing cost is not increased.

  Further, by providing the elastic portion 95 at the contact position of the second end portion 90C of the first guide member 90 with the rotation restricting portion 103, by applying a force toward the guide position to the first guide member 90, for example. The first guide member 90 can be rotated to the guide position by elastically deforming the elastic portion 95. Thereby, in the state where the feeding tray 20 is pulled out from the printer unit 11 and the release rod 80 is moved to the second position P4 and the first guide member 90 is rotated to the open position, the release rod 80 is, for example, by the user. Is moved to the first position P3 and the shaft 45A is moved to the contact position P1, the first guide member is elastically deformed by attaching the feeding tray 20 to the printer unit 11 to elastically deform the first guide member. 90 can be moved to a defined state. Further, the feeding tray 20 can be normally attached to the printer unit 11.

  In addition, since the second rib 92B is provided on the first guide surface 90A upstream of the position where it overlaps the elastic portion 95 in the left direction 9A and the right direction 9B, the leading end of the sheet 12 in the conveyance direction contacts the elastic portion 95. It is possible to prevent the conveyance of the paper 12 from being hindered.

  Further, since the feeding tray 20 has the contact portion 20 </ b> B, the contact portion 20 </ b> B contacts the release rod 80 in a state where the feeding tray 20 is attached to the printer unit 11. This restricts the release rod 80 from moving from the first position P3 to the second position P4 in a state where the feed tray 20 is mounted on the printer unit 11. Therefore, for example, it is possible to prevent the nip state between the reversing roller 45 and the spur 46 from being erroneously released during image recording.

  Further, in the process in which the feeding tray 20 is moved from the state pulled out from the printer unit 11 to the mounted state, the contact portion 20B moves to the first position P3 by contacting the release rod 80 at the second position P4. Can be made. Therefore, the reversing roller 45 and the spur 46 can be automatically brought into the nip state by mounting the feeding tray 20 on the printer unit 11.

[Modification]
In the above-described embodiment, the case where the transport device is used for the ink jet recording apparatus as the image recording apparatus has been described. However, the conveyance device of the present invention can be used not only for an ink jet recording apparatus but also for other image recording apparatuses such as a laser printer. Further, the conveying device of the present invention is not limited to use in an image recording apparatus, and can be used in all devices that use sheets.

  Moreover, in the said embodiment, although the 1st guide member 90 is comprised so that it may rotate from a guide position to an open position with dead weight, the 1st guide member 90 is used using urging members, such as a spring. You may bias to an open position.

  Moreover, in the said embodiment, although the clamping member is comprised by the spur 46, a clamping member is not restricted to driven rollers, such as a spur 46. FIG. For example, it may be a plate-shaped or rectangular parallelepiped pressing member having a pressing surface with a sufficiently small friction coefficient that presses the recording paper 12 toward a conveying roller such as the reverse roller 45.

  Moreover, in the said embodiment, although the 1st guide member 90 is a member which comprises a part of inversion conveyance path 66, and opened a part of inversion conveyance path 66 by rotation, Not limited. For example, if the printer unit 11 does not have the reverse conveyance path 66 but has only the main conveyance path 65, a part of the main conveyance path 65 is defined by a guide member having the same configuration as the first guide member 90. Accordingly, a part of the main conveyance path 65 can be opened by the rotation. Alternatively, a part of the main transport path 65 can be opened together with the reverse transport path 66 or in place of the reverse transport path 66 by a guide member having the same configuration as the first guide member 90.

  In the above embodiment, the driving roller such as the reversing roller 45 driven by the motor is the conveying roller moved by the release rod 80, but is not limited thereto. For example, in a configuration in which the reverse roller 45 is disposed in the upward direction 7A and the spur 46 facing the reverse roller 45 is disposed in the downward direction 7B, the driven roller such as the spur 46 is used as a transport roller and the rotation shaft is moved by the release lever. It can also be configured. In this case, a driving roller such as the reversing roller 45 is the clamping member.

10: Multifunction machine 11: Printer section (image recording device)
12 ... paper
16C: Reverse conveyance direction (conveyance direction)
20 ... Feeding tray (tray)
45. Reverse roller (conveyance roller)
46 ... Spur (clamping member)
66 ... Reverse conveyance path (conveyance path)
78 ... Long hole (shaft holder)
80, 80A, 80B ... release rod 90 ... first guide member 90A ... guide surface (first guide surface)
90B ... first end 90C ... second end 92B ... second rib (guide rib)
95 ... Elastic part 100 ... Second guide member 100A ... Guide surface (second guide surface)
103 ... Rotation restricting part

Claims (11)

A transport roller;
A clamping member that is disposed opposite to the conveying roller and capable of sandwiching a sheet with the conveying roller;
An axis that movably holds the rotation shaft of the conveyance roller at a contact position where the conveyance roller is in contact with the clamping member and a sheet can be conveyed, and a separation position where the conveyance roller is separated from the clamping member A holding part;
A tray that can support the sheet and can be attached to and pulled out of the apparatus;
A first guide surface for guiding a sheet conveyed by the conveying roller, a first end portion rotatably engaged with the rotation shaft of the conveying roller, and a rotation front end side in rotation around the rotation shaft A first guide member having a second end and capable of rotating around the rotation shaft to a guide position constituting at least a part of a conveyance path through which the sheet passes and an open position opening a part of the conveyance path When,
A guide support portion provided on the tray, the guide support portion contacting the first guide member in a state where the tray is mounted on the apparatus, and holding the first guide member at the guide position;
In a state where the tray is pulled out from the apparatus and the rotation shaft is in the contact position, the first guide member is moved to the open position by contacting the second end portion of the first guide member. While the rotation is restricted, the first guide member is allowed to rotate to the open position in a state where the tray is pulled out from the apparatus and the rotation shaft is at the separation position. The dynamic regulation department,
A transport device comprising: a first position where the rotation shaft is the contact position; and a release member which is movable to a second position where the rotation shaft is the separation position.   The conveying device according to claim 1, wherein the separation position is located in a direction in which the rotation shaft is separated from the rotation restricting portion from the contact position. A second guide surface that is disposed adjacent to the first guide surface of the first guide member at the guide position and guides the sheet, and that forms at least another part of the transport path. Further comprising two guide members,
The transport device according to claim 1, wherein the rotation restricting portion is provided on the second guide member.   From the 1st which is provided in the contact position with the above-mentioned rotation control part of the above-mentioned 2nd end of the above-mentioned 1st guide member, The elastic part which can be elastically deformed in the direction away from the above-mentioned rotation control part is provided. 4. The transfer device according to any one of 3.   It is provided on the first guide surface of the first guide member and is a position corresponding to the elastic portion in the width direction orthogonal to the conveying direction for conveying the sheet, and is located from the elastic portion to the first end portion. The transport apparatus according to claim 4, further comprising a guide rib that is disposed at a close position and protrudes to the transport path. The elastic portion has a third end portion closer to the first end portion of the first guide member and a fourth end portion opposite thereto.
The transport device according to claim 5, wherein the guide rib projects into the transport path from the third end portion of the elastic portion. The first guide member rotates from the guide position to the open position by its own weight,
The rotation restricting portion is located below the second end portion of the first guide member in a state where the first guide member is at the guide position, and the first guide member is rotated from the guide position to the open position. The transport apparatus according to claim 1, wherein the transport apparatus is located at a position overlapping with a rotation trajectory of the second end portion in a moving process.   The tray is provided on the tray, and controls the movement of the release member from the first position to the second position by contacting the release member when the tray is mounted on the apparatus. The transport apparatus according to claim 1, further comprising a contact portion.   The contact portion moves the release member to the first position by contacting the release member in a process in which the tray is moved from a state pulled out of the device to a state attached to the device. The conveying device according to claim 8, which is to be made.   The conveying device according to claim 1, wherein the clamping member is a roller. A transport apparatus according to any one of claims 1 to 10,
An image recording apparatus comprising: a recording unit that records an image on a sheet.

Images