JP5505343B2 - Transport device - Google Patents

Description

  The present invention relates to a conveyance device that feeds a sheet by a roller from a sheet storage member that is slidably mounted on an apparatus main body.

  There is a conveyance device that feeds a sheet by a roller from a sheet storage member that is slidably mounted on the apparatus main body (see Patent Document 1). This type of conveying apparatus is used for an image recording apparatus that records an image on a fed sheet, an image reading apparatus that reads an image recorded on the fed sheet, and the like.

  The conveyance device described in Patent Document 1 is rotatably supported by an apparatus main body, a sheet storage member mounted on the apparatus main body so as to be slidable forward, and an arm disposed above the sheet storage member. And a roller. The arm is rotatably supported by a support shaft formed in a rod shape extending along the width direction of the apparatus main body. The arm extends rearward and obliquely downward from the support shaft, and supports the roller at the rotating tip. The support shaft is rotated by a drive motor. The rotation of the support shaft is transmitted to the roller by a plurality of transmission gears provided on the arm. The sheet storage member is formed in a box shape having an upper portion opened. The sheet is placed on the bottom surface of the sheet storage member. On one upper part of the side wall in the width direction of the sheet accommodating member, an inclined surface that rises toward the rear is provided. When the sheet storage member mounted on the apparatus main body is slid forward, the arm slides on the inclined surface and rotates around the support shaft, thereby lifting the roller. When the sheet storage member is attached to the apparatus main body, the arm slides on the inclined surface and is rotated, and the roller is lowered. The lowered roller comes into contact with the sheet placed on the bottom surface of the sheet storage member. The roller is rotated to feed the sheet backward.

JP 2010-202299 A

  When the sheet storage member is slid forward while the roller is in contact with the uppermost sheet, the sheet is fixed by the roller, and the sheet is displaced with respect to the sheet storage member. In the configuration in which the arm is rotated by an inclined surface to lift the roller and the roller is pulled away from the sheet as in the conveyance device described in Patent Document 1, the arm increases as the amount of the sheet placed on the sheet storage member increases. The distance that the sheet storage member moves before the contact with the inclined surface increases. When the distance becomes longer, the sheet is likely to be displaced. If the inclination of the inclined surface is made steep, the distance can be reduced. However, if the inclination of the inclined surface is made steep, the arm becomes difficult to slide on the inclined surface, the slidability of the sheet storage member is deteriorated, and the takeout load of the sheet storage member increases.

  In the conventional configuration in which the sheet is prevented from being displaced by the inclined surface provided on the side wall of the sheet accommodating member, the sheet can be accommodated in the sheet accommodating member without increasing the load of taking out the sheet accommodating member. Increasing the maximum amount of was difficult.

  The present invention has been made in view of the above-described circumstances, and the object thereof is to increase the maximum amount of sheets stored in the sheet storage member, even if the sheet is misaligned and the sheet load is taken out. The object is to provide a mechanism in which the increase of the above does not occur.

  (1) The conveying apparatus of the present invention has an apparatus main body and a mounting surface on which a sheet is mounted, and is mounted on the apparatus main body so as to be slidable in the first direction along the mounting surface. It is rotatably supported by the sheet storage member and a support shaft disposed above the placement surface, and the rotation tip is described above by being rotated around the first axis of the support shaft. A first posture close to the placement surface and a rotation tip portion that is changed in posture to a second posture separated from the placement surface above the first posture; A roller orthogonal to one direction and rotatable about a second axis along the placement surface, and in the first posture, a roller whose peripheral surface can contact the placement surface; and the first A first gear which is provided to be rotatable about an axis and is rotated by driving transmission from a driving source; A second gear that is provided on the arm and transmits the drive transmitted through the first gear to the roller; and at least one third gear that transmits the drive from the first gear to the second gear. A drive transmission mechanism having the third gear is rotatably supported, and is rotatably provided around the first axis, and is rotated relative to the arm around the first axis. Thus, the third gear transmits the drive from the first gear to the second gear, and the third gear cuts the drive transmission from the first gear to the second gear. A holder whose posture is changed to a posture; and a link member that changes the posture of the holder from the third posture to the fourth posture in conjunction with the slide of the sheet storage member.

  When the sheet storage member mounted on the apparatus main body is slid in the first direction, the link member changes the position of the holder from the third position to the fourth position in conjunction with the sliding of the sheet storage member. Due to the change in the posture of the holder, the third gear held by the holder is changed from a posture capable of driving transmission from the first gear to the second gear to a posture for cutting off driving transmission from the first gear to the second gear. Changed. When the drive transmission from the first gear to the second gear is cut, the roller can freely rotate without receiving a load from the drive source, and the uppermost sheet that comes into contact with the roller is not fixed. As a result, it is possible to prevent the sheet from being displaced by the roller when the sheet storage member mounted on the apparatus main body is slid. In the present invention, since the positional deviation of the sheet is prevented by cutting the drive transmission between the driving source and the roller, even if the maximum amount of the sheet accommodated in the sheet accommodating member is increased, the positional deviation of the sheet and the sheet accommodating member There is no increase in take-out load.

  (2) The conveyance device of the present invention further includes a conveyance path through which the sheet fed by the roller passes, and the link member is linked to the slide of the sheet storage member from the fifth position to the sixth position. It is possible to change the posture and to form a part of the guide surface of the transport path in the fifth posture. By providing the guide surface of the conveyance path on the link member, the member provided with the guide surface becomes unnecessary, and the number of parts can be reduced. Further, the conveyance path can be exposed by changing the posture of the link member in conjunction with the slide of the sheet storage member.

  (3) The sheet storage member includes a bottom portion provided with the placement surface, a first wall standing from the bottom portion and guiding a sheet fed by the roller, rising from the bottom portion, and the first portion. A second wall extending in one direction, and the second wall has an inclined surface that guides the arm to the upper side of the first wall in the sliding of the sheet accommodating member. Also good.

  When the sheet storage member mounted on the apparatus main body is slid in the first direction, the arm is lifted by the inclined surface and exceeds the first wall. Therefore, the roller and the first wall do not come into contact with each other, and the roller is not damaged by the contact with the first wall.

  In addition, as described above, in the present invention, since the link between the drive source and the roller is cut by the link member, the inclined surface may be lifted by the arm until the roller reaches the first wall. The inclination angle of the inclined surface can be relaxed compared to the conventional configuration in which the sheet is separated from the sheet to prevent the sheet from being displaced. As a result, it is possible to reduce the take-out load of the sheet storage member as compared with the conventional configuration.

  (4) The roller may be provided with a space in a connecting portion with respect to the second gear so as to be capable of idling less than one round. Since the holder only needs to be in the fourth posture while the roller is idling, the design of the link member and the holder is facilitated.

  (5) The link member is rotatably provided in the apparatus main body, and is supported by the sheet storage member mounted on the apparatus main body. The holder is supported by the sheet storage member. It may have a contact part pushed down by the link member rotating by losing.

  When the sheet storage member mounted on the apparatus main body is slid in the first direction, the link member supported by the sheet storage member loses support by the sheet storage member and rotates. The contact portion provided on the holder is pushed down by the rotating tip of the rotating link member, and the posture of the holder is changed from the third posture to the fourth posture. Since the link member rotates by its own weight and changes its posture, the number of parts is reduced as compared with the configuration in which the link member is changed in posture by a spring or the like.

  (6) The first gear is provided on the support shaft that is rotationally driven by the drive source and is rotated together with the support shaft. The holder is supported by the support shaft, and has a frictional force. May be rotated between the third posture and the fourth posture. The first gear can be rotated and the holder can be rotated to the third posture, and the holder can follow the rotation of the arm and maintain the third posture by the weight and weight of the third gear to be held. In comparison, drive transmission from the first gear to the second gear by the third gear can be reliably performed. Further, the number of parts is reduced as compared with the configuration in which the holder is biased by the biasing member to maintain the third posture.

  According to the present invention, the link member changes the posture of the holder in conjunction with the sliding of the sheet storage member mounted on the apparatus main body in the first direction, and the drive transmission from the first gear to the second gear is cut off. Since the positional deviation of the sheet by the roller is prevented, even if the maximum amount of sheets that can be accommodated in the sheet accommodating member is increased, the positional deviation of the sheet and the increase in the take-out load of the sheet accommodating member do not occur.

It is a perspective view of an image recording device. 1 is a schematic longitudinal sectional view of an image recording apparatus. It is a perspective view of a paper feed cassette. It is a perspective view of a feeding unit. FIG. 6 is a perspective view of a rear portion of a feeding unit and a paper feeding cassette. (A) is a top view of a feeding part, (B) is BB sectional drawing in (A). FIG. 10 is a perspective view of the feeding unit when the sheet feeding cassette is removed from the printer unit. (A) is a longitudinal sectional view of the feeding unit when the paper feeding cassette is mounted, and (B) is a longitudinal sectional view of the feeding unit when the paper feeding cassette is removed from the printer unit.

  Embodiments of the present invention will be described below with reference to the drawings as appropriate. Note that 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 appropriately changed without departing from the gist of the present invention.

  In the following description, the vertical direction 7 is defined with reference to the state where the image recording apparatus 10 is installed (the state shown in FIG. 1), and the front-rear direction 8 is defined with the side where the display unit 13 is provided as the front side. Then, the left-right direction 9 is defined when the image recording apparatus 10 is viewed from the front side.

  The image recording apparatus 10 has a substantially rectangular parallelepiped shape including a lower printer unit 11 and an upper scanner unit 12, and is a multi-function machine having print, scan, and copy functions. The scanner unit 12 has an arbitrary configuration.

  Control of the printer unit 11 is performed by a control unit (not shown). The control unit is realized by, for example, a microcomputer mounted on a substrate. The control unit controls driving of a driving motor and a recording unit 40 (to be described later) based on information input from an input unit (not shown), an external device such as a personal computer, or a telephone line, and the sheets 14 stored in the paper feed cassette 15 are controlled. An image is recorded in (FIG. 2). The sheet 14 is recording paper, glossy paper, postcard, sealed letter, or the like. The printer unit 11 also has a double-sided printing function that records images on both the front and back sides of the sheet 14.

[Paper cassette 15]
The paper feed cassette 15 is accommodated in the lower part of the printer unit 11 so as to be slidable forward from an opening 19 provided on the front surface of the printer unit 11. The printer unit 11 corresponds to the apparatus main body. The paper feed cassette 15 corresponds to a sheet storage member. The forward direction in which the paper feed cassette 15 is pulled out corresponds to the first direction.

  As shown in FIG. 3, the paper feed cassette 15 includes a main tray 70 and a paper discharge tray 80. The main tray 70 has a flat rectangular parallelepiped outer shape with an opening at the top, and includes a bottom 71, a left side wall 72, a right side wall 73, a rear wall 74, and a front wall 75. As shown in FIG. 2, the sheet 14 is placed on the upper surface 71 </ b> A of the bottom 71 of the main tray 70. The bottom 71 corresponds to the bottom. The upper surface 71A corresponds to the mounting surface.

  The rear wall 74 of the main tray 70 extends rearward and obliquely upward from the rear end portion of the bottom portion 71. The rear wall 74 of the main tray 70 guides the sheet 14 fed rearward by a feeding roller 26 of the feeding unit 20 described later to the first conveyance path 31. The rear wall 74 corresponds to the first wall.

  As shown in FIG. 3, a plurality of separation protrusions 76 protrude from the inner surface of the rear wall 74. The separation projection 76 contacts the lower sheet 14 when a plurality of sheets 14 are fed out by the feeding roller 26 (FIG. 2), and separates the overlapped sheets 14. The separation protrusion 76 is formed by, for example, fixing a metal piece to the rear wall 74.

  An inclined surface 73A that rises toward the rear is provided as a part of the upper end surface at the rear portion of the right side wall 73 of the main tray 70. As will be described later, when the paper feeding cassette 15 is pulled forward from the opening 19 (FIG. 1) of the printer unit 11, the arm 22 (FIG. 5) holding the feeding roller 26 is in sliding contact with the inclined surface 73A. The right side wall 73 corresponds to the second wall. The inclined surface 73A corresponds to the inclined surface.

  The paper discharge tray 80 is placed on the left and right side walls 72 and 73 and the upper end surface of the front wall 75 of the main tray 70. The discharge tray 80 is formed so that the length in the front-rear direction 8 is shorter than the length in the front-rear direction 8 of the main tray 70, and covers the front side of the upper opening of the main tray 70. That is, the paper feed cassette 15 has an opening in the upper part on the rear side. The feed roller 26 (FIG. 2) enters the paper feed cassette 15 from the opening.

  An upper surface 81 of the paper discharge tray 80 is a paper discharge receiving surface that receives the image-recorded sheet 14 (FIG. 2) discharged from the printer unit 11. A pair of left and right support convex portions 82 and 83 protrude from left and right end portions of the rear end portion of the upper surface 81. As shown in FIG. 2, the support convex portion 83 (82) supports the first link member 91 when the paper feed cassette 15 is attached to the printer portion 11 (FIG. 1). The first link member 91 will be described later.

[Printer 11]
As shown in FIG. 2, the printer unit 11 records an image on a feeding unit 20 having a feeding roller 26, a conveying unit 30 that conveys a sheet 14 that is fed by the feeding roller 26, and a conveyed sheet 14. The recording unit 40 is provided. The feeding unit 20 will be described in detail later. The feeding unit 20, the transport unit 30, and the paper feed cassette 15 correspond to a transport device.

[Conveying unit 30]
The conveyance unit 30 includes a first conveyance roller pair 50, a second conveyance roller pair 54, and a switchback roller pair 58 that convey the sheet 14 therebetween, and a first conveyance path 31 and a second conveyance that are spaces through which the sheet 14 passes. Road 32 is provided. The first transport path 31 and the second transport path 32 are spaces defined by the platen 38, the plurality of guide members 33, and the first link member 91.

  The first conveyance path 31 includes a curved portion 34 in which the sheet 14 is curved and conveyed in the first conveyance direction 36, and a linear portion that linearly extends forward from the downstream end of the curved portion 34 in the first conveyance direction 36. 35.

  The second transport path 32 passes between the platen 38 disposed above the paper feed cassette 15 and the paper feed cassette 15, and a first connection position 45 on the upstream side of the platen 38 in the first transport direction 36; The first transport path 31 is connected to the second connection position 46 on the downstream side. The second conveyance path 32 corresponds to the conveyance path.

  The platen 38 is supported by a frame 63 shown in FIG. The frame 63 includes a bottom plate 64 and left and right side plates 65 and 66. The frame 63 is formed by bending a metal plate. The platen 38 is disposed above the bottom plate 64 of the frame 63 and is sandwiched between the left and right side plates 65 and 66. In FIG. 2, the frame 63 is not shown.

  As shown in FIG. 2, the first transport roller pair 50 is disposed at a position between the first connection position 45 and the platen 38 in the first transport direction 36. The first conveying roller pair 50 is disposed on the lower side of the first driving roller 51 and the linear portion 35, and is pressed against the first driving roller 51 by a spring (not shown). And a first driven roller 52. The first driving roller 51 is provided on a first rotating shaft 53 that is rotated by a first driving motor (not shown) whose driving is controlled by the control unit. The first rotating shaft 53 is disposed with its center axis aligned with the left-right direction 9 (FIG. 1), and is supported by the frame 63 (FIG. 4) so as to be rotatable about the center axis.

As shown in FIG. 2, the second transport roller pair 54 is disposed at a position between the platen 38 and the second connection position 46 in the first transport direction 36. The second conveying roller pair 54 is
A second drive roller 55 disposed below the straight portion 35 and a second driven roller 56 disposed above the straight portion 35 and pressed against the second drive roller 55 by a spring (not shown) are provided. ing. The second driven roller 56 is a spur. The second drive roller 55 is provided on the second rotating shaft 57 to which the drive of the first drive motor is transmitted by a cam belt (not shown). The second rotation shaft 57 is disposed with its center axis aligned with the left-right direction 9 (FIG. 1), and is supported by the frame 63 (FIG. 4) so as to be rotatable about the center axis.

  As shown in FIG. 2, the switchback roller pair 58 is disposed downstream of the second connection position 46 in the first transport direction 36. The switchback roller pair 58 is disposed above the paper discharge tray 80. The switchback roller pair 58 is disposed on the lower side of the linear portion 35 and the third driven roller disposed on the upper side of the linear portion 35 and pressed against the third driving roller 59 by a spring. 60. The third driven roller 60 is a spur. The third drive roller 59 is provided on the third rotating shaft 61 to which the drive of the first drive motor is transmitted by the above cam belt. The third rotation shaft 61 is disposed with its center axis aligned with the left-right direction 9 (FIG. 1), and is supported by the frame 63 (FIG. 4) so as to be rotatable about the center axis.

  The sheet 14 sent out from the paper feeding cassette 15 by the feeding roller 26 of the feeding unit 20 is conveyed in the first conveying direction 36 by the first conveying roller pair 50 and the second conveying roller pair 54. On the sheet 14, an image is recorded on a platen 38 by a recording unit 40 described later. The sheet 14 on which an image is recorded on one side (front side) by the recording unit 40 is discharged from the switchback roller pair 58 to the discharge tray 80 in the case of single-sided printing. In the case of duplex printing, the sheet 14 on which an image is recorded on one side by the recording unit 40 is one of the switchback roller pair 58 until the upstream end (rear end) in the first transport direction 36 exceeds the second connection position 46. After being transported in the first transport direction 36 by the rotation in the direction, the switchback roller pair 58 enters the second transport path 32 from the second connection position 46 by the rotation in the other direction. The sheet 14 is conveyed by the switchback roller pair 58 through the second conveyance path 32 in the second conveyance direction 39, enters the first conveyance path 31 from the first connection position 45, and the first and the second conveyance path 31 are reversed. Is transported in the first transport direction 36. The sheet 14 is discharged from the switchback roller pair 58 to the discharge tray 80 after an image is recorded on the back surface by the recording unit 40.

[Recording unit 40]
As shown in FIG. 2, the recording unit 40 includes a carriage 41 disposed above the platen 38 and a recording head 42 mounted on the carriage 41. The carriage 41 is supported so as to be movable in the left-right direction 9 by a pair of front and rear guide rails (not shown) installed on the upper ends of the left and right side plates 65, 66 of the frame 63 shown in FIG. The carriage 41 shown in FIG. 2 is moved by a third drive motor (not shown) whose drive is controlled by the control unit. The recording head 42 ejects ink droplets toward the sheet 14 passing over the platen 38 when supplied with electric power. Note that a recording unit other than the ink jet recording method that discharges ink droplets, for example, an electrostatic recording method or a thermal recording method recording unit may be used.

[First link member 91]
As shown in FIG. 2, the first link member 91 is rotatably supported on the third rotating shaft 61 of the switchback roller pair 58. The first link member 91 is rotated around the central axis of the third rotation shaft 61 to thereby form a part of the lower guide surface of the second transport path 32 in the fifth posture (FIG. 8A). (Corresponding to the fifth posture of the present invention) and the sixth posture (corresponding to the sixth posture of the present invention) of FIG. 8B hanging from the third rotating shaft 61.

  When the paper feed cassette 15 is inserted from the opening 19 (FIG. 1) of the printer unit 11 in the sixth posture of FIG. 8B, the first link member is supported by the support convex portions 82 and 83 of the paper feed cassette 15 inserted. The pivoting tip 91 is lifted and supported, resulting in the fifth posture of FIG. The 1st link member 91 which became the 5th attitude | position forms a part of lower guide surface of the 2nd conveyance path 32, as FIG. 2 shows.

  When the paper feed cassette 15 is slid forward and pulled out from the opening 19 (FIG. 1) of the printer unit 11 by the user, the first link member 91 that has lost support by the paper feed cassette 15 rotates third due to its own weight. It rotates around the central axis of the shaft 61 and changes its posture from the fifth posture to the sixth posture. When the paper feed cassette 15 is pulled out from the printer unit 11 and the first link member 91 is in the sixth posture, the second transport path 32 is exposed. By exposing the second conveyance path 32, the user can easily remove the sheet 14 jammed in the second conveyance path 32.

[Feeding unit 20]
As shown in FIG. 2, the feeding unit 20 includes a first support shaft 21 supported by a frame 63 (FIG. 4), an arm 22 rotatably supported by the first support shaft 21, and a rotation of the arm 22. A pair of left and right feeding rollers 26 rotatably supported by the moving tip portion 23 are provided. The first support shaft 21 rotatably supports a holder 95 that holds a planetary gear 102 described later in addition to the arm 22.

[First spindle 21]
As shown in FIG. 4, the first support shaft 21 is disposed on the upper surface side of the bottom plate 64 of the frame 63 and is rotatably supported by a plurality of support portions 68 provided on the bottom plate 64. The first support shaft 21 extends to the right side plate 66 of the frame 63 and is rotated around the central axis 21 </ b> A by the second drive motor 17 disposed on the right side of the right side plate 66. The first support shaft 21 corresponds to a support shaft. The central axis 21A corresponds to the first axis. The second drive motor 17 corresponds to a drive source.

[Arm 22]
As shown in FIG. 4, a through-hole 67 through which the arm 22 is inserted is provided at the center in the left-right direction 9 of the bottom plate 64 of the frame 63. The arm 22 passes through the through hole 67 and extends rearward and obliquely downward from the first support shaft 21. The arm 22 includes an insertion hole 24 into which the first support shaft 21 is inserted at the end on the first support shaft 21 side, and is supported by the first support shaft 21 so as to be rotatable. The arm 22 can be slidably contacted with the peripheral surface of the first support shaft 21, and can be rotated around the central axis 21 </ b> A of the first support shaft 21 without being interlocked with the rotation of the first support shaft 21. The arm 22 corresponds to the arm.

  The arm 22 is rotated in a first posture (corresponding to the first posture of the present invention) in which the turning tip 23 comes close to the upper surface 71A of the bottom 71 of the main tray 70 by turning around the central axis 21A of the first support shaft 21. ), And the rotation tip portion 23 is changed to a second posture (corresponding to the second posture of the present invention) separated from the upper surface 71A upward than the first posture. In FIG. 2, the arm 22 in the first posture is indicated by a thin broken line. The arm 22 in the second posture is indicated by a thick broken line. The arm 22 indicated by a solid line is a posture when the sheet 14 is accommodated in the main tray 70 and is an intermediate posture between the first posture and the second posture. The arm 22 is biased from the second posture to the first posture by a torsion coil spring (not shown) or its own weight. That is, the turning tip 23 of the arm 22 is generally biased downward.

  As shown in FIG. 5, the arm 22 includes a sliding contact portion 25 that comes into sliding contact with an inclined surface 73 </ b> A provided on the right side wall 73 of the main tray 70 when the paper feed cassette 15 is slid in the front-rear direction 8. ing. When the paper feed cassette 15 is inserted from the opening 19 (FIG. 1) of the printer unit 11, the arm 22 is rotated by coming into contact with the rear wall 74 of the main tray 70, and the main tray 70 is moved in the sliding contact portion 25. It rides on the upper end surface of the right side wall 73 and assumes the second posture. The arm 22 has an inclined surface 73A at the sliding contact portion 25 by the above-described torsion coil spring or urging by its own weight after the feeding roller 26 provided at the rotating front end portion 23 passes over the rear wall 74 of the main tray 70. Glide on the top. The arm 22 slides on the inclined surface 73A to lower the feeding roller 26 provided at the rotating front end portion 23. The lowered feeding roller 26 is in contact with the upper surface 71A of the bottom portion 71 of the main tray 70 on the circumferential surface or the sheet 14 placed on the upper surface 71A, and has a first posture indicated by a thin broken line in FIG. Or it becomes an intermediate posture shown by a solid line.

[Feeding roller 26]
As shown in FIG. 5, the pair of left and right feeding rollers 26 are integrally coupled to the left and right ends of a fourth rotating shaft 27 that is rotatably provided at the rotating tip 23 of the arm 22. The fourth rotation shaft 27 is arranged with the central axis 27 </ b> A coinciding with the left-right direction 9. The feeding roller 26 corresponds to a roller. The central axis 27A of the fourth rotating shaft 27 corresponds to the second axis.

  As shown in the enlarged view of FIG. 6B, a pair of contact pieces 28A and 28B protrude from the peripheral surface of the central portion of the fourth rotating shaft 27 in the left-right direction 9 (FIG. 1). The pair of contact pieces 28 </ b> A and 28 </ b> B protrude in opposite directions along the radial direction of the fourth rotation shaft 27. The fourth rotation shaft 27 is inserted into a shaft hole 29 </ b> A provided in the center portion of the first transmission gear 29. The first transmission gear 29 corresponds to the second gear.

  The shaft hole 29A of the first transmission gear 29 is provided with a pair of contacted portions 29B and 29C that are separated by an angle θ. When the fourth rotating shaft 27 rotates, the contact pieces 28A, 28B of the fourth rotating shaft 27 are at most an angle θ within the moving spaces 29D, 29E between the contacted portion 29B and the contacted portion 29C. After rotating, it abuts against the abutted portions 29B and 29C. The moving spaces 29D and 29E correspond to the spaces. After the contact pieces 28A and 28B contact the contacted portions 29B and 29C, the first transmission gear 29 and the fourth rotating shaft 27 rotate integrally. In other words. The feeding roller 26 can idle with respect to the first transmission gear 29 by an angle θ. The angle θ is set to less than 360 °. In the illustrated example, the angle θ is set to about 75 °.

  Hereinafter, a configuration in which the rotation of the first support shaft 21 is transmitted to the first transmission gear 29 by the sun gear 101 and the drive transmission mechanism 18 of FIG. 6B provided on the first support shaft 21 will be described. . The drive transmission mechanism 18 includes four gears: a planetary gear 102 held by a holder 95, a second transmission gear 103, a third transmission gear 104, and a fourth transmission gear 105 held by an arm 22. The drive transmission mechanism 18 corresponds to a drive transmission mechanism. The planetary gear 102, the second transmission gear 103, the third transmission gear 104, and the fourth transmission gear 105 correspond to the third gear.

  The sun gear 101 is integrally attached to the first support shaft 21 and is rotated integrally with the first support shaft 21 around the central axis 21A (FIG. 4) of the first support shaft 21. The sun gear 101 corresponds to the first gear.

[Holder 95 and planetary gear 102]
The holder 95 shown in FIG. 4 includes a bearing hole 97 into which the first support shaft 21 is inserted at one end, and is supported by the first support shaft 21 so as to be rotatable. The bearing hole 97 has a diameter substantially the same as the diameter of the first support shaft 21, and the outer peripheral surface of the first support shaft 21 is in sliding contact with the inner peripheral surface. The holder 95 can be rotated together with the first support shaft 21 by a frictional force generated between the holder 95 and the first support shaft 21. The holder 95 corresponds to the holder.

  When the first support shaft 21 is rotated in the first rotation direction 47 (counterclockwise) shown in FIG. 8A, the holder 95 is moved to the first support shaft by the frictional force between the first support shaft 21 and the first support shaft 21. 21 is rotated in the first rotation direction 47 around the central axis 21 </ b> A. The rotated holder 95 comes into contact with the arm 22 and assumes the third posture shown in FIG. 8A (corresponding to the third posture of the present invention). The third posture is a posture of the holder 95 with respect to the arm 22. The direction from the rotation base end of the holder 95 in the third posture toward the rotation front end substantially coincides with the direction from the rotation base end of the arm 22 toward the rotation front end. The holder 95 in the third posture is stopped from rotating by coming into contact with the arm 22, and is in sliding contact with the rotating first support shaft 21 on the inner peripheral surface of the bearing hole 97. In FIG. 8, a part of the arm 22 is not shown.

  When the holder 95 is in the third posture shown in FIG. 8A, when the first support shaft 21 is rotated in the second rotation direction 48 (clockwise), the frictional force between the first support shaft 21 and the holder 95 is rotated. As a result, the holder 95 is rotated around the central axis 21 </ b> A of the first support shaft 21 in the second rotation direction 48. The rotated holder 95 comes into contact with the arm 22 and assumes the fourth posture shown in FIG. 8B (corresponding to the fourth posture of the present invention). The fourth posture is a posture with respect to the arm 22. The direction from the rotation base end of the holder 95 in the fourth posture toward the rotation front end is different from the direction from the rotation front end of the arm 22 toward the rotation base end. The rotating tip of the holder 95 in the fourth posture is located above the arm 22. The holder 95 in the fourth posture is stopped from rotating by coming into contact with the arm 22 and is in sliding contact with the rotating first support shaft 21 on the inner peripheral surface of the bearing hole 97.

  The holder 95 is provided with a contact portion 96 for receiving a forced rotation by a second link member 92 described later in addition to the rotation by the rotation of the first support shaft 21. The contact portion 96 protrudes from the rotation base end portion of the holder 95 substantially obliquely upward to the front. That is, the contact portion 96 protrudes from the rotation base end portion in a direction substantially opposite to the direction from the rotation base end of the holder 95 toward the rotation front end. The contact portion 96 corresponds to the contact portion. The forced rotation of the holder 95 by the second link member 92 will be described in detail later.

  As shown in FIG. 6B, the planetary gear 102 is arranged at the rotating tip of the holder 95 with the central axis line coincident with the left-right direction 9 (FIG. 1) and meshes with the sun gear 101. . The planetary gear 102 revolves around the sun gear 101 while being engaged with the sun gear 101 by the rotation of the holder 95.

[Second transmission gear 103, third transmission gear 104, fourth transmission gear 105]
As shown in FIG. 6B, the second transmission gear 103 is arranged with the central axis line aligned with the left-right direction 9 (FIG. 1), and is rotatably supported by the arm 22. Further, as shown in FIG. 8A, the second transmission gear 103 is disposed at a position that meshes with the planetary gear 102 provided on the holder 95 when the holder 95 is in the third posture. That is, the second transmission gear 103 is rotated when the rotation of the first support shaft 21 is transmitted when the holder 95 is in the third posture. As shown in FIG. 8B, when the holder 95 is in the fourth posture, the second transmission gear 103 is not meshed with the planetary gear 102 and is not rotated.

  As shown in FIG. 6B, the third transmission gear 104 is disposed with its central axis aligned in the left-right direction 9 (FIG. 1), and is rotatably supported by the arm 22. The third transmission gear 104 meshes with the second transmission gear 103. The fourth transmission gear 105 is disposed with its center axis aligned with the left-right direction 9 and is rotatably supported by the arm 22. The fourth transmission gear 105 is disposed at a position where the fourth transmission gear 105 meshes with the first transmission gear 29 and the third transmission gear 104. 6B and 8, the sun gear 101, the planetary gear 102, and the transmission gears 29, 103, 104, and 105 are shown as schematic shapes in which the tooth configuration is omitted.

  As shown in FIG. 8A, when the holder 95 is in the third posture, the sun gear 101, the planetary gear 102, the second transmission gear 103, the third transmission gear 104, the fourth transmission gear 105, and the first transmission. The gears 29 mesh with each other. Therefore, the rotation of the first support shaft 21 is transmitted to the fourth rotation shaft 27, and the feeding roller 26 provided on the fourth rotation shaft 27 is rotated. As shown in FIG. 8B, when the holder 95 is in the fourth posture, the planetary gear 102 is not engaged with the second transmission gear 103, and the rotation of the first support shaft 21 is the fourth rotation shaft 27. Not transmitted to. That is, when the first support shaft 21 is rotated in the first rotation direction 47, the holder 95 is in the third posture, the feed roller 26 is rotated, and the first support shaft 21 is rotated in the second rotation direction 48. Then, the holder 95 becomes the fourth posture, and the connection between the feeding roller 26, the support shaft 21 and the second drive motor 17 (FIG. 7) is broken.

  In addition to the rotation of the first support shaft 21, the holder 95 is linked to the attachment and detachment of the paper feed cassette 15 by the first link member 91 and the second link member 92 described below. The posture is changed to the posture.

[Second link member 92]
As shown in FIG. 2, the second link member 92 is provided with a bearing portion 93 supported at one end by a second support shaft 69 provided on the frame 63 (FIG. 4). 69 is rotatably supported. The second support shaft 69 is arranged with the central axis line aligned with the left-right direction 9 (FIG. 1).

  The second link member 92 is disposed on the upper side of the abutting portion 96 provided in the holder 95, and rotates the supported portion 94 supported by the rotating tip portion of the first link member 91 in the fifth posture. It is provided at the moving tip. The second link member 92 is separated from the abutting portion 96 by a distance that does not abut against the abutting portion 96 of the pivoted holder 95 when the rotating tip portion is supported by the first link member 91. It is in the seventh posture of FIG.

  When the user feeds the sheet cassette 15 forward from the opening 19 (FIG. 1) of the printer unit 11, the first link member 91 loses the support by the sheet cassette 15 and hangs down from the third rotating shaft 61. It becomes the posture (FIG. 8B). The second link member 92, which has lost support by the first link member 91 due to the first link member 91 being in the sixth posture, is rotated in the direction in which the rotation tip is lowered by its own weight, as shown in FIG. 8B. 8th posture. In the posture change from the seventh posture to the eighth posture, the second link member 92 pushes down the contact portion 96 of the holder 95 positioned on the lower side to rotate the holder 95 and change the posture to the fourth posture. The first link member 91 and the second link member 92 correspond to link members.

[Operation]
In a state where the paper feed cassette 15 is removed from the printer 11, as shown in FIG. 8B, the first link member 91 is in the sixth posture, and the second link member 92 is in the eighth posture. The holder 95 is in the fourth posture. When the paper feed cassette 15 on which the sheet 14 is placed is inserted into the printer unit 11 (FIG. 1) from the opening 19, the first link member 91 is supported by the support protrusion provided on the paper discharge tray 80 of the paper feed cassette 15. The pivoting tip is lifted by the parts 82 and 83 to rotate, and the posture is changed from the sixth posture in FIG. 8B to the fifth posture in FIG. 8A.

  The second link member 92 is rotated by the first link member 91 whose posture has been changed from the sixth posture to the fifth posture, with the turning tip portion lifted and turned from the eighth posture of FIG. 8B to FIG. The posture is changed to the seventh posture of (A). When the second link member 92 is in the seventh posture, the second link member 92 is separated from the contact portion 96 of the holder 95, and the holder 95 can freely rotate.

  On the other hand, when the paper feed cassette 15 is inserted from the opening 19 of the printer unit 11, the arm 22 comes into contact with the rear wall 74 of the main tray 70 of the paper feed cassette 15, and the rotating front end portion 23 is lifted. Become posture. The arm 22 slides on the inclined surface 73A of the main tray 70 at the sliding contact portion 25 by the urging force or its own weight of the torsion coil spring after the feeding roller 26 provided at the rotating front end portion 23 passes above the rear wall 74. In contact with each other, the rotating tip 23 is lowered, and an intermediate posture between the first posture and the second posture (solid line in FIG. 2) is obtained. The feeding roller 26 provided at the rotating tip portion 23 of the arm 22 contacts the sheet 14 placed on the upper surface 71A of the bottom portion 71 of the main tray 70.

  When the paper feed cassette 15 is attached to the printer unit 11, the arm 22 is once in the second posture, so that the holder 95 is in the fourth posture shown in FIG. The holder 95 maintains the fourth posture by the frictional force generated between the holder 95 and the first support shaft 21. That is, immediately after the paper feed cassette 15 is mounted on the printer unit 11, the holder 95 is in the third posture.

  When the second drive motor 17, the drive of which is controlled by the control unit, is rotated and the first support shaft 21 is rotated in the first rotation direction 47, the holder 95 is moved by the frictional force between the first support shaft 21 and the first support shaft 21. The first spindle 21 and the first rotation direction 47 are rotated. The holder 95 rotated in the first rotation direction 47 is changed in posture from the fourth posture in FIG. 8B to the third posture in FIG. By changing the attitude of the holder 95 to the third attitude, the planetary gear 102 held by the holder 95 meshes with the second transmission gear 103 held by the arm 22. When the planetary gear 102 meshes with the second transmission gear 103, the rotation of the first support shaft 21 is transmitted to the fourth rotation shaft 27 through the sun gear 101, the planetary gear 102, and the transmission gears 103, 104, 105, and 29. The feeding roller 26 is rotated.

  The sheet 14 is fed backward by the rotated feeding roller 26. The sheet 14 fed rearward is guided to the first conveyance path 31 by the rear wall 74 of the main tray 70. The sheet 14 is conveyed by the conveying unit 30, and an image is recorded by the recording unit 40, and is discharged from the switchback roller pair 58 to the upper surface 81 of the paper discharge tray 80.

  Next, the operation when the paper feed cassette 15 is slid forward from the opening 19 of the printer unit 11 and is removed from the printer unit 11 will be described. When the paper feed cassette 15 is slid forward, a frictional force is generated between the feed roller 26 and the sheet 14 accommodated in the paper feed cassette 15. Since the feed roller 26 is provided so as to be idle with respect to the fourth rotation shaft 27 within the range of the angle θ, the feed roller 26 is rotated by the frictional force. Therefore, the frictional force that the sheet 14 receives from the feeding roller 26 is a rolling frictional force. The rolling friction force is weaker than the static friction force. That is, a strong force due to the static frictional force does not act on the sheet 14, and the position of the sheet 14 does not shift.

  The angle θ, which is the angle range in which the feed roller 26 can idle with respect to the fourth rotation shaft 27, is determined while the paper feed cassette 15 is discharged while the feed roller 26 is idle with respect to the fourth rotation shaft 27. The support convex portions 82 and 83 provided on the paper tray 80 are set so as to be disengaged from the rotating front end portion of the first link member 91. That is, while the feed roller 26 is idling with respect to the fourth rotation shaft 27, the first link member 91 in the fifth posture of FIG. 8A loses support by the paper feed tray 15. It rotates by its own weight and assumes the sixth posture in FIG. The second link member 92 that has lost support by the first link member 91 due to the first link member 91 being in the sixth posture rotates due to its own weight, and from the seventh posture in FIG. 8A to FIG. ) Is changed to the eighth posture.

  The second link member 92 whose posture has changed from the seventh posture to the eighth posture pushes down the contact portion 96 of the holder 95 to rotate the holder 95 with respect to the arm 22, and from the third posture in FIG. The posture of the holder 95 is changed to the fourth posture in FIG. When the holder 95 is in the fourth posture, the planetary gear 102 is separated from the second transmission gear 103, and the connection between the feeding roller 26, the first support shaft 21 and the second drive motor 17 is broken. .

  As described above, while the feed roller 26 is idling with respect to the fourth rotation shaft 27, the connection between the feed roller 26, the first support shaft 21 and the second drive motor 17 is broken. The feeding roller 26 can freely rotate without receiving a load from the first support shaft 21 and the second drive motor 17. Therefore, even after the feeding roller 26 idles by the angle θ with respect to the fourth rotation shaft 27, the feeding roller 26 rotates on the sheet 14. As a result, a large force does not act on the sheet 14 until the sheet feeding cassette 15 is removed from the printer unit 11, and the sheet 14 is not displaced by the feeding roller 26.

[Effect of the embodiment]
In the present embodiment, by using the first link member 91 and the second link member 92, the feeding roller 26, the first support shaft 21, and the second link are interlocked with the drawer of the paper feed cassette 15 from the printer unit 11. The connection with the drive motor 17 can be broken. As a result, it is possible to prevent the sheet 14 from being displaced by the feeding roller 26.

  Further, by forming a part of the lower guide surface of the second conveyance path 32 by the first link member 91 in the fifth posture, the second conveyance path 32 is moved to the outside in conjunction with the drawer of the paper feed cassette 15. Can be exposed. Further, it is not necessary to provide a member for forming the lower guide surface of the second transport path 32 separately from the first link member 91, and the number of parts can be reduced.

  Further, when the paper feeding cassette 15 is attached or detached, the feeding roller 26 gets over the rear wall 74 without contacting the rear wall 74 of the main tray 70 due to the inclined surface 73 </ b> A provided on the main tray 70. As a result, it is possible to prevent damage to the feed roller 26 due to contact with the rear wall 74.

  In the present embodiment, since the first link member 91 and the second link member 92 disconnect the connection between the feeding roller 26 and the first support shaft 21 and the second drive motor 17, the inclined surface 73A is The arm 22 may be lifted until the feeding roller 26 reaches the rear wall 74 of the main tray 70. Therefore, the inclination angle of the inclined surface 73A can be relaxed compared to the conventional configuration in which the arm 22 is lifted by the inclined surface 73A to lift the feeding roller 26 from the sheet 14 and prevent the sheet 14 from being displaced. By reducing the inclination angle of the inclined surface 73A, the take-out load when the paper cassette 15 is pulled out is reduced, and the paper cassette 15 can be easily pulled out.

  Further, since the feed roller 26 is provided so as to be idle with respect to the fourth rotation shaft 27, the feed roller 26, the first support shaft 21 and the second support shaft 21 immediately after the paper feed cassette 15 starts to be pulled out. There is no need to break the connection with the drive motor 17, and the design of the first link member 91 and the second link member 92 is facilitated.

  Further, since the holder 95 is changed in posture to the third posture by the rotation of the first support shaft 21, the holder 95 is urged by a spring, and the holder 95 is rotated following the rotation of the arm 22 to rotate the holder 95. The number of parts is reduced as compared with the configuration in which the three postures are maintained. Further, compared to the configuration in which the holder 95 maintains the third posture by its own weight, the force for pressing the planetary gear 102 against the second transmission gear 103 can be increased, and the planetary gear 102 and the second transmission gear 103 are reliably engaged with each other. be able to.

[Modification 1]
As described above, the control unit rotates the second drive motor 17 in the direction in which the first support shaft 21 rotates in the first rotation direction 47 (FIG. 8A), and the sheet 14 is moved by the feeding roller 26. It sends out to the 1st conveyance path 31 (FIG. 2). In this modification, the control unit rotates the first support shaft 21 in the second rotation direction 48 after sending the sheet 14 to the first conveyance path 31 and before sending the next sheet 14 to the first conveyance path 31. The second drive motor 17 is rotated in such a direction. By rotating the first support shaft 21 in the second rotation direction 48, the holder 95 is in the fourth posture, and the connection between the feeding roller 26 and the first support shaft 21 and the second drive motor 17. Is refused.

  The feeding roller 26 is configured so that the sheet cassette 15 is moved by the user while the sheet 14 is being fed or until the second driving motor 17 is rotated in a direction in which the first support shaft 21 rotates in the second rotation direction 48. When pulled out, the first link member 91 and the second link member 92 disconnect the connection between the first support shaft 21 and the second drive motor 17. When the image recording is not executed, since the connection between the feeding roller 26 and the first support shaft 21 and the second drive motor 17 is broken, the positional deviation of the sheet 14 by the feeding roller 26 is further reduced. It can be surely prevented.

[Other variations]
In the above-described embodiment, the configuration in which the holder 95 is rotated by the first support shaft 21 to be in the third posture has been described. However, the diameter of the bearing hole 97 is set larger than the diameter of the first support shaft 21 so that the holder 95 can freely rotate with respect to the first support shaft 21. The holder 95 may be biased by a biasing member such as a torsion coil spring that comes into contact, and the holder 95 may be in the third posture. The holder 95 urged by the urging member is rotated following the rotation of the arm 22 to maintain the third posture. When the paper feed cassette 15 is pulled out by the user, the holder 95 is forcibly changed to the fourth posture against the biasing force of the biasing member by the first link member 91 and the second link member 92. The Also in this modification, the feed roller 26 can be disconnected from the first support shaft 21 and the second drive motor 17 in conjunction with the drawer of the paper feed cassette 15 from the printer unit 11. The positional deviation of the sheet 14 by the roller 26 can be prevented.

  Moreover, the structure which tracks the rotation of the arm 22 and maintains a 3rd attitude | position by rotating the holder 95 with dead weight may be used. The feeding roller 26 is forcibly changed to the fourth posture by the first link member 91 and the second link member 92 when the paper feed cassette 15 is pulled out by the user. Also in this modification, the feed roller 26 can be disconnected from the first support shaft 21 and the second drive motor 17 in conjunction with the drawer of the paper feed cassette 15 from the printer unit 11. The positional deviation of the sheet 14 by the roller 26 can be prevented.

  In the above-described embodiment, the configuration in which the planetary gear 102 is held by the holder 95 has been described. However, the configuration in which the second transmission gear 103, the third transmission gear 104, or the fourth transmission gear 105 is held by the holder 95. May be adopted. A configuration in which a plurality of gears among the planetary gear 102 and the transmission gears 103, 104, and 105 are held by the holder 95 may be employed. That is, if the connection between the feed roller 26 and the first support shaft 21 and the second drive motor 17 can be broken, the planetary gear 102, the second transmission gear 103, the third transmission gear 104, and the fourth transmission gear. Any of the gears 105 may be held by the holder 95.

  In the above-described embodiment, the configuration in which the arm 22 is provided with the four transmission gears 29, 103, 104, and 105 has been described. However, the number of transmission gears is not limited to four. In the configuration in which the holder 95 is in the third posture by the rotation of the first support shaft 21, the number of transmission gears is an even number so that the feeding roller 26 is rotated in the direction in which the sheet 14 is fed backward. The

  In the above-described embodiment, the example in which the fourth rotation shaft 27 and the first transmission gear 29 can idle by the angle θ has been described. However, the fourth rotation shaft 27 and the first transmission gear 29 are integrally formed. You may couple | bond so that rotation is possible. In this case, the support protrusions 82 and 83 of the paper discharge tray 80 are formed with a short length in the front-rear direction 8 so that the first link member 91 rotates immediately after the paper feed cassette 15 is pulled out.

  In the above-described embodiment, the example in which the fourth rotating shaft 27 and the first transmission gear 29 can idle is described, but the fourth rotating shaft 27 and the feeding roller 26 or the It may be possible to idle between the one spindle 21 and the sun gear 101. Further, idling is possible between the fourth rotating shaft 27 and the first transmission gear 29, between the fourth rotating shaft 27 and the feeding roller 26, and between the first support shaft 21 and the sun gear 101. May be.

  In the above-described embodiment, the configuration in which the first support shaft 21 is provided such that the center axis 21A coincides with the left-right direction 9 has been described. However, the center axis 27A of the fourth rotation shaft 27 is the left-right direction 9 1, the first support shaft 21 may be arranged such that the central axis 21 </ b> A is inclined with respect to the left-right direction 9. In this case, a bevel gear is used as at least one of the transmission gears 103, 104, and 105.

  In the above-described embodiment, the example in which the first link member 91 and the second link member 92 change the posture of the holder 95 to the fourth posture in conjunction with the drawer of the paper feed cassette 15 has been described. However, a configuration in which the holder 95 is changed to the fourth posture in conjunction with the drawer of the paper feed cassette 15 by one link member may be employed.

  In the above-described embodiment, the example in which the first support shaft 21 is rotated by the second drive motor 17 and the sun gear 101 is rotated by the first support shaft 21 has been described. A configuration in which the gear 101 is rotated directly or indirectly through the gear may be employed.

  Further, in the above-described embodiment, the example in which the first link member 91 and the second link member 92 are rotatably provided has been described. However, the holder 95 is moved to the third posture in conjunction with the drawer of the paper feed cassette 15. If the posture can be changed from the first posture to the fourth posture, the posture changes of the first link member 91 and the second link member 92 are not limited to rotation.

  In the above-described embodiment, the example in which the present invention is used in the image recording apparatus 10 in which the second conveyance path 32 is provided and capable of duplex printing has been described. However, only the first conveyance path 31 is provided. The present invention may be used in the image recording apparatus 10.

10... Image recording device 11... Printer unit (device main body)
15: Paper cassette (sheet storage member)
17 ... Second drive motor (drive source)
18 ... Drive transmission mechanism 21 ... First support shaft (support shaft)
21A ... Central axis (first axis)
22 ... Arm 26 ... Feeding roller (roller)
27... Fourth rotation shaft 27A .. center axis (second axis)
29 ... 1st transmission gear (2nd gear)
32 ... 2nd conveyance path (conveyance path)
70 ... bottom 71A ... upper surface (mounting surface)
73 ... side wall (second wall)
73A..Inclined surface 74 ... Rear wall (first wall)
91 ... 1st link member (link member)
92 ... Second link member (link member)
95... Holder 96... Contact portion 101 .. Sun gear (first gear)
102 .. Planetary gear (third gear)
103 .. Second transmission gear (third gear)
104 .. Third transmission gear (third gear)
105 .. Fourth transmission gear (third gear)

Claims (6)

The device body;
A sheet storage member that has a mounting surface on which the sheet is mounted and is slidable in the first direction along the mounting surface;
It is rotatably supported by a support shaft disposed above the placement surface, and the turning tip is brought close to the placement surface by turning around the first axis of the support shaft. An arm whose posture is changed to a second posture in which the first posture and the rotating front end portion are separated from the placement surface above the first posture;
The rotating tip of the arm is provided so as to be rotatable about a second axis perpendicular to the first direction and along the placement surface. In the first posture, the peripheral surface is placed on the placement surface. A roller in contact with the surface;
A first gear which is provided to be rotatable about the first axis and is rotated by driving transmission from a driving source;
A second gear that is provided on the arm and transmits the drive transmitted through the first gear to the roller;
A drive transmission mechanism having at least one third gear for transmitting drive from the first gear to the second gear;
The third gear is rotatably supported, and is provided so as to be rotatable around the first axis. By rotating relative to the arm around the first axis, the first gear is provided. The posture is changed to a third posture in which three gears transmit driving from the first gear to the second gear, and a fourth posture in which the third gear disconnects driving transmission from the first gear to the second gear. A holder,
And a link member that changes the posture of the holder from the third posture to the fourth posture in conjunction with the slide of the sheet storage member. A transport path through which the sheet fed by the roller passes;
The link member is changed in posture from the fifth posture to the sixth posture in conjunction with the slide of the sheet storage member, and forms a part of the guide surface of the conveyance path in the fifth posture. The transfer device according to claim 1. The sheet accommodating member is
A bottom portion provided with the mounting surface, and
A first wall standing up from the bottom and guiding the sheet fed by the roller;
A second wall standing up from the bottom and extending along the first direction,
3. The transport device according to claim 1, wherein the second wall has an inclined surface that guides the arm to the upper side of the first wall when the sheet storage member slides.   The conveying device according to any one of claims 1 to 3, wherein the roller has a space in a connecting portion with respect to the second gear and is capable of idling less than one round. The link member is rotatably provided in the apparatus main body, and is supported by the sheet storage member attached to the apparatus main body.
5. The transport device according to claim 1, wherein the holder has a contact portion that is pushed down by the link member that rotates while losing support by the sheet storage member. The first gear is provided on the support shaft that is rotationally driven by the drive source and is rotated together with the support shaft.
The conveying device according to claim 1, wherein the holder is supported by the support shaft and is rotated between the third posture and the fourth posture by a frictional force.

Images