JP2017178514A - Sheet transport device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet transport device which can displace a stopper to a desired position by a more simple operation.SOLUTION: A sheet transport device comprises a stopper which regulates a tip position of a sheet discharged to a support part in the vicinity of the support part. The stopper has a first component attached to the support part, and a second component attached to the first component. The first component is so configured as to be rotatable relatively to the support part, and the second component is so configured as to be rotatable and slidable relatively to the first component. In the case that the second component exists at a first position, the first component exists at a non-projection position. In the case that the second component exists at a second position, the first component exists at a projection position.SELECTED DRAWING: Figure 5

Description

  The present disclosure relates to a sheet conveying apparatus.

  2. Description of the Related Art A sheet conveying apparatus that includes a support portion (so-called paper discharge tray) that supports a sheet discharged from a conveyance portion is known in which a stopper is provided in the vicinity of an edge portion of the support portion (for example, a patent) Reference 1).

  In the paper discharge tray device (4) described in Patent Document 1, the end fence (35) corresponding to the above-described stopper is rotatably attached to the front end side in the paper discharge direction of the extension tray (31). The extension tray is slidable with respect to the fixed tray (30).

JP 2003-40513 A

  However, when using the paper discharge tray device as described above, the user operates each of a plurality of movable parts (specifically, an extension tray and an end fence) to displace each movable part to a predetermined position. I have to let it. Therefore, before using the paper discharge tray device, an operation of pulling the extension tray by placing the hand on the extension tray and an operation of raising the end fence by placing the hand on the end fence again are required. . In addition, after using the paper discharge tray device, the operation of placing the hand on the end fence and tilting the end fence, the operation of placing the hand again on the extension tray and pushing the extension tray, are necessary. Therefore, there is a problem that the user feels troublesome for such multiple operations.

  In view of the above circumstances, it is desirable to provide a sheet conveying apparatus that can displace the stopper to an intended position with a simpler operation.

  The sheet conveying apparatus described below includes a conveying unit that can convey a sheet along a conveying path, a supporting unit that supports a sheet discharged from the conveying unit, and a leading end position of the sheet discharged to the supporting unit. And a stopper that regulates in the vicinity of the edge portion on the downstream side in the movement direction of the sheet in the support portion, and the stopper includes a first component attached to the support portion and a second component attached to the first component. One of the support part and the first part is provided with a first shaft part in which the axial direction is directed in a direction orthogonal to the moving direction of the sheet in the support part. By providing the first bearing portion that rotatably supports the first portion, the first component is configured to be rotatable relative to the support portion, and the first component is an end portion close to the rotation center. A certain first end and the center of rotation than the first end The first part has a non-projecting position where the second end portion does not protrude from the end edge portion, and a protruding position where the second end portion protrudes from the end edge portion. The second end is provided with a second shaft portion arranged in parallel with the first shaft portion, and the second component can be rotated with the second shaft portion. In addition, by providing a second bearing portion having a groove or a long hole that is slidably supported, the second part can rotate relative to the first part and can slide in the direction in which the groove or the long hole extends. The second component is a surface having an inclination that rises from the lower end on the upstream side in the movement direction of the sheet in the support portion toward the upper end on the downstream side, and contacts the sheet discharged to the support portion Has a possible contact surface, and when the sheet discharged from the transport section moves by the first movement amount, It is configured to be displaceable to a first position to be touched and a second position that contacts the contact surface when the sheet discharged from the transport unit moves by a second movement amount that is greater than the first movement amount. The sliding direction of the second part is a direction parallel to the contact surface, and when the second part is in the first position, the first part is in the non-projecting position, and the second part is most obliquely upward. When the second part is in the second position, the first part is in the protruding position, and the second part is slid to the uppermost diagonal position. Placed in position.

  According to the sheet conveying apparatus configured as described above, the stopper is configured by the first component and the second component as described above. Therefore, the protrusion amount of the stopper can be reduced by setting the first component in the non-projecting position and the second component in the first position. Therefore, when the sheet conveying apparatus is not used, the stopper can be prevented from getting in the way by reducing the protruding amount of the stopper. Moreover, the protrusion amount of a stopper can also be made large by setting it as the state by which the 1st component is arrange | positioned in the protrusion position and the 2nd component is arrange | positioned in the 2nd position. Therefore, when the sheet conveying apparatus is used, the stopper can function properly by increasing the protrusion amount of the stopper. Furthermore, when displacing the first part and the second part to the positions as described above, if the user operates the second part and operates it, the first part is linked to the displacement of the second part. Parts can be displaced. Therefore, unlike the structure in which each part cannot be placed in the expected position unless each part is operated separately, the first part and the second part can be operated only by operating the second part. Both can be arranged at the expected positions, and the operability of the stopper can be improved.

FIG. 1 is a perspective view showing the external appearance of the multifunction machine. FIG. 2 is a longitudinal sectional view showing the reading unit. FIG. 3A is a perspective view showing the stopper in the retracted position. FIG. 3B is a perspective view showing the stopper in the deployed position. FIG. 4A is a perspective view showing a second part of the stopper. FIG. 4B is a perspective view showing a first part of the stopper. FIG. 4C is a perspective view showing a recess provided in the discharge tray. FIG. 5A is a longitudinal sectional view showing the stopper in the retracted position. FIG. 5B is a longitudinal sectional view showing the stopper in the deployed position. FIG. 6A is a longitudinal sectional view showing the stopper in the retracted position. FIG. 6B is a longitudinal sectional view showing a state in which the second part is slid obliquely right upward from the position shown in FIG. 6A. FIG. 6C is a longitudinal sectional view showing a state in which the first part is rotated about 90 degrees clockwise from the position shown in FIG. 6B. FIG. 6D is a longitudinal sectional view showing a state in which the first component is rotated about 140 degrees in the clockwise direction from the position shown in FIG. 6B. 6E is a longitudinal sectional view showing a state in which the first part is rotated about 180 degrees clockwise from the position shown in FIG. 6B and the stopper is displaced to the deployed position.

Next, the above-described sheet conveying apparatus will be described with an exemplary embodiment.
[Configuration of MFP]
A multifunction machine 1 illustrated in FIG. 1 is an apparatus having a configuration corresponding to an example of the above-described sheet conveying apparatus. In the following description, in order to briefly explain the relative positional relationship between the respective parts constituting the multi-function device 1, the upper, lower, left, and right directions are also shown in the drawing, and these directions are used. Give an explanation. Among these directions, the up and down direction is the direction perpendicular to the horizontal plane when the multifunction device 1 is installed on the horizontal plane, the front is the direction in which an operation panel 5 described later is directed, the rear is the opposite direction of the front, and the left and right direction is the above This is the left-right direction when the multifunction device 1 is viewed from the front.

  As shown in FIG. 1, the multifunction machine 1 includes a main body unit 2 and a reading unit 3. Inside the main unit 2, a control unit that controls the entire multifunction device 1, an image forming unit, a LAN communication unit, and the like are provided. The reading unit 3 includes a flat bed portion 3A (hereinafter referred to as an FB portion 3A) and an automatic document conveying portion 3B (corresponding to an example of a sheet conveying device in the present disclosure, hereinafter referred to as an ADF portion 3B). Prepare. The FB part 3A and the ADF part 3B will be described later.

  An operation panel 5 that is operated by a user is provided on the front surface of the multifunction device 1. The operation panel 5 is an input device (for example, a touch panel, various buttons, and switches) that is operated when the user gives various commands to the multifunction device 1, and the operation state of the multifunction device 1. Output device (for example, a liquid crystal display device and various lamps).

  Below the operation panel 5 is provided a medium discharge tray 6 for discharging a recording medium on which an image is formed in the image forming unit. A front cover 7 configured to be openable and closable is provided below the medium discharge tray 6. When the front cover 7 is opened, the image forming unit provided in the main unit 2 can be accessed, and maintenance and the like for the image forming unit can be performed. Below the front cover 7, a medium supply cassette 8 that accommodates a recording medium supplied to the image forming unit is attached.

[Details of reading unit]
Next, the structure of the reading unit 3 will be described. The reading unit 3 is provided with a first image sensor 11A and a second image sensor 11B. Among these, the first image sensor 11A is disposed in the FB portion 3A, and the second image sensor 11B is disposed in the ADF portion 3B.

  The first image sensor 11A and the second image sensor 11B are one-dimensional image sensors including a plurality of reading elements (not shown) arranged in one direction. In the present embodiment, the first image sensor 11A and the second image sensor 11B are both contact image sensors (CIS). In the first image sensor 11A and the second image sensor 11B, the reading element arrangement direction (main scanning direction) is in the front-rear direction (a direction perpendicular to both the left-right direction and the up-down direction in FIG. 2). Is directed.

  Further, the reading unit 3 is provided with an FB platen 12, a first ADF platen 13A, and a second ADF platen 13B. Among these, the FB platen 12 and the first ADF platen 13A are disposed in the FB portion 3A, and the second ADF platen 13B is disposed in the ADF portion 3B. The FB platen 12, the first ADF platen 13A, and the second ADF platen 13B are made of a transparent plate material such as a glass plate or an acrylic plate. The FB platen 12 is configured to be able to support a document on a support surface orthogonal to the vertical direction in FIG.

  The FB portion 3A is provided with a guide shaft 14, a carriage 15, a toothed belt 16, and the like. The guide shaft 14 is formed of a metal round bar, is below the FB platen 12, and extends in the left-right direction in FIG. 2 at a position spaced from the FB platen 12.

  The carriage 15 is supported on the guide shaft 14 so as to reciprocate in the left-right direction along the guide shaft 14 by being mounted on the guide shaft 14. Hereinafter, of the range in which the carriage 15 reciprocates in the left-right direction, the left end position is referred to as a first position, and the right end position is referred to as a second position. That is, in the left-right direction, the carriage 15 moves forward from the first position to the second position in the right direction, and moves backward from the second position to the first position in the left direction.

  The carriage 15 is connected to an annular (that is, endless) toothed belt 16. The toothed belt 16 is rotationally driven in the forward and reverse directions by a motor (not shown), and at that time, the carriage 15 reciprocates in the left-right direction following the toothed belt 16. The first image sensor 11A is mounted on the carriage 15 in a state where the above-described reading element is directed in a direction (upward in FIG. 2) facing the FB platen 12 and the first ADF platen 13A.

  A pressing portion 17 is provided in the ADF portion 3B. The press part 17 is comprised by the laminated body of the foamed resin layer and the hard resin film layer. When the ADF unit 3 </ b> B is closed, the pressing unit 17 comes into close contact with the FB platen 12 with some elastic deformation, and presses the reading object placed on the FB platen 12 toward the FB platen 12.

  When reading an image of a reading object (for example, a sheet or a book original) placed on the upper surface of the FB platen 12, the first image sensor 11A is orthogonal to the arrangement direction of the reading elements (main scanning direction). The image is read while moving together with the carriage 15 in the direction (sub-scanning direction). The first image sensor 11A reads the image of the document supported by the FB platen 12 when the carriage 15 moves from the first position side to the second position side.

  In the reading unit 3, the ADF unit 3 </ b> B includes a conveyance unit 20 that conveys a sheet along a conveyance route (a route indicated by a broken line in FIG. 2) as illustrated in FIG. 2. A supply tray 21 that supports a sheet supplied to the conveyance unit 20 is provided on the upstream side in the conveyance direction of the conveyance unit 20. A discharge tray 22 (corresponding to an example of a support unit in the present disclosure) that supports a sheet discharged from the conveyance unit 20 is provided on the downstream side in the conveyance direction of the conveyance unit 20.

  The conveyance unit 20 includes a suction roller 25, a separation roller 26A, a separation piece 26B, a first conveyance roller 27A, a first pinch roller 27B, a second conveyance roller 28A, a second pinch roller 28B, a discharge roller 29A, and a discharge pinch roller 29B. Etc. The first pinch roller 27B is urged toward the first conveying roller 27A by a spring (not shown). The second pinch roller 28B is urged toward the second conveying roller 28A by a spring (not shown). The discharge pinch roller 29B is urged toward the discharge roller 29A by a spring (not shown).

  The sheets placed on the supply tray 21 are sent out from the supply tray 21 to the downstream side in the transport direction by the suction roller 25, and are separated one by one by the separation roller 26A and the separation piece 26B. Then, it is further transported downstream in the transport direction by the first transport roller 27A and the second transport roller 28A, and is discharged onto the discharge tray 22 by the discharge roller 29A.

  The first ADF platen 13A is provided at a position along the transport path where the transport path is located at the lowest position. A first sheet pressing portion 31A is provided at a position facing the first ADF platen 13A across the conveyance path. The first sheet pressing portion 31A faces the first ADF platen 13A from above. Further, the second ADF platen 13B is provided at a position along the conveyance path and above the conveyance path extending obliquely downward from the second conveyance roller 28A toward the first ADF platen 13A. A second sheet pressing portion 31B is provided at a position facing the second ADF platen 13B across the conveyance path. The second sheet pressing portion 31B faces the second ADF platen 13B from obliquely below.

  The first sheet pressing portion 31A is urged toward the first ADF platen 13A with an urging force that does not hinder the conveyance of the sheet. Thereby, when the sheet is conveyed between the first ADF platen 13A and the first sheet pressing portion 31A, the sheet passing while contacting the upper surface of the first ADF platen 13A is lifted from the first ADF platen 13A. Suppress.

  The second sheet pressing portion 31B is biased toward the second ADF platen 13B with an urging force that does not hinder the conveyance of the sheet. Thus, when the sheet is conveyed between the second ADF platen 13B and the second sheet pressing portion 31B, the sheet passing while contacting the upper surface of the second ADF platen 13B is lifted from the second ADF platen 13B. Suppress.

  When reading an image of a sheet conveyed by the conveyance unit 20, the first image sensor 11A is stationary at a position facing the first sheet pressing unit 31A with the first ADF platen 13A interposed therebetween, and the upper surface of the first ADF platen 13A. The image of the sheet passing while touching the sheet is read. The second image sensor 11B is disposed at a position facing the second sheet pressing portion 31B across the second ADF platen 13B, and reads an image of the sheet passing while contacting the lower surface of the second ADF platen 13B. .

[Configuration of stopper]
In the ADF unit 3B, a stopper 33 is provided near the right end of the discharge tray 22 as shown in FIGS. The stopper 33 is configured to be displaceable between the position shown in FIG. 3A and the position shown in FIG. 3B. More specifically, the stopper 33 has a first part 35 attached to the discharge tray 22 and a second part 37 attached to the first part 35. As shown in FIG. 4C and the like, the discharge tray 22 has a recess 67 that is recessed downward from the upper surface 22B of the discharge tray 22. The first component 35 is rotatably supported by the recess 67 of the discharge tray 22.

  Specifically, the first component 35 is provided with a first shaft portion 39 as shown in FIG. 4B. As shown in FIG. 4C, the discharge tray 22 is provided with a first bearing portion 41. The first shaft portion 39 protrudes outward from each of the pair of side walls 35 </ b> C along the conveying direction in the first component 35. The first shaft portion 39 is formed in a columnar shape, and the axial direction is directed in a direction (front-rear direction) orthogonal to the sheet moving direction (left-right direction and up-down direction) in the discharge tray 22. The first bearing portion 41 is a recess or hole into which the first shaft portion 39 is fitted. The first bearing portion 41 is formed on an inner wall surface 67 </ b> A that faces the side wall 35 </ b> C of the first component 35. The 1st bearing part 41 is supporting the 1st axial part 39 so that rotation is possible. Thereby, the first component 35 is configured to be rotatable relative to the discharge tray 22. The first shaft portion 39 and the first bearing portion 41 may be provided with the first shaft portion 39 provided on the discharge tray 22 and the first bearing portion 41 provided on the first component 35.

  The first component 35 includes a first end portion 35A that is an end portion close to the rotation center, and a second end portion 35B that is an end portion that is farther from the rotation center than the first end portion 35A. The first part 35 has a non-projecting position where the second end 35B does not project from the end edge 22A of the discharge tray 22 (see FIG. 3A), and the second end 35B projects from the end edge 22A of the discharge tray 22. It is configured to be rotatable between the protruding position (see FIG. 3B). The recess 67 of the discharge tray 22 is provided with a support wall 67B that protrudes upward from the bottom surface. The support wall 67B is provided on the upstream side in the sheet moving direction from the position where the first bearing portion 41 is formed. As shown in FIG. 5A, the upper end of the support wall 67B supports the first component 35 in the non-projecting position from below.

  As shown in FIG. 4B, the second end portion 35 </ b> B of the first component 35 is provided with a second shaft portion 43 disposed in parallel with the first shaft portion 39. As shown in FIG. 4A, the second component 37 is provided with a second bearing portion 45. The second shaft portion 43 is formed in a cylindrical shape. The second bearing portion 45 is a groove or a long hole through which the second shaft portion 43 is passed. The second shaft portion 43 is supported by the second bearing portion 45 and is slidable and rotatable along a groove or a long hole constituting the second bearing portion 45. Thereby, the second component 37 is configured to be rotatable relative to the first component 35 and to be slidable along the second bearing portion 45.

  As shown in FIG. 4A, the second component 37 includes a contact surface 47, a flat surface 49, a convex portion 51, and a handle portion 53. The contact surface 47 is a surface having an inclination that rises upward from the lower end 47A on the upstream side in the sheet moving direction of the discharge tray 22 toward the upper end 47B on the downstream side, and the sheet discharged to the discharge tray 22 It is a contactable surface. The flat surface 49 extends from the upper end 47B of the contact surface 47 toward the downstream side in the sheet discharge direction. The convex portion 51 is located on the opposite side of the contact surface 47 across the flat surface 49, and protrudes upward from the flat surface 49. The handle portion 53 is located on the opposite side of the flat surface 49 with the convex portion 51 interposed therebetween, and is recessed downward from the flat surface 49. In the case of this embodiment, the recess of the handle portion 53 is continuous with the gap of the second bearing portion 45.

  The second component 37 is configured to be displaceable between a first position (see FIGS. 3A and 5A) and a second position (see FIGS. 3B and 5B). When the second part 37 is in the first position, the sheet discharged from the conveyance unit 20 contacts the contact surface 47 when it has moved by the first movement amount. On the other hand, when the second component 37 is in the second position, the sheet discharged from the conveyance unit 20 contacts the contact surface 47 when it is moved by the second movement amount that is larger than the first movement amount. . That is, when the second component 37 is at the second position, the contact surface 47 is disposed at a position farther from the transport unit 20 than when the second component 37 is at the first position.

  The sliding direction of the second part 37 relative to the first part 35 is a direction parallel to the contact surface 47 described above. When the second part 37 is in the first position, the first part 35 is in the above-described non-projecting position (see FIGS. 3A and 5A). Further, when the second part 37 is in the first position, the second part 37 is arranged at a position that is slid slightly downward relative to the position that is slid upward most diagonally with respect to the relative position with respect to the first part 35. Has been. Even when the second component 37 is in the first position, the upper end 47 </ b> B of the contact surface 47 protrudes from the upper surface 22 </ b> B of the discharge tray 22. Accordingly, a part of the contact surface 47 is in a state where the sheet discharged to the discharge tray 22 can be contacted. As shown in FIG. 5A, when the second component 37 is in the first position, the second component 37 is supported from below by the lower end of the coupling portion 59 coming into contact with the bottom surface of the recess 67. The second component 37 is supported from below by the lower surface of the second plate portion 57 coming into contact with the upper end of the first end portion 35 </ b> A of the first component 35.

  On the other hand, when the 2nd component 37 exists in a 2nd position, the 1st component 35 exists in the above-mentioned protrusion position (refer FIG. 3B and FIG. 5B). When the second part 37 is in the second position, the second part 37 is disposed at a position that is slid most obliquely upward with respect to the relative position with respect to the first part 35.

  In the present embodiment, the second component 37 includes a first plate portion 55, a second plate portion 57, and a coupling portion 59. The first plate portion 55 is configured in a plate shape, and one surface is the contact surface 47 described above. The second plate portion 57 is configured in a plate shape, is disposed in parallel with a space between the second plate portion 55 and faces the surface behind the contact surface 47 described above. The coupling portion 59 couples the first plate portion 55 and the second plate portion 57 in the vicinity of the lower end 47A of the contact surface 47 described above. The groove or the long hole of the second bearing portion 45 is constituted by a gap formed between the first plate portion 55 and the second plate portion 57.

  As shown in FIG. 4C, the discharge tray 22 is provided with a positioning portion 61. The positioning portion 61 is provided on the downstream side of the first bearing portion 41 in the sheet moving direction and is at a position facing the support wall 67B. When the first part 35 is displaced to the protruding position, the positioning unit 61 comes into contact with the displaced first part 35 from below and stops the first part 35 at the protruding position, as shown in FIG. 5B. . Here, the second component 37 is provided with a protrusion 63. As shown in FIG. 4A, the protrusion 63 is a portion protruding upward from the contact surface 47 in the vicinity of the coupling portion 59 of the second part 37. More specifically, as shown in FIG. 5A and the like, the protrusion 63 has a triangular cross section and extends in the front-rear direction. The first component 35 is provided with a protrusion receiving portion 65. The protrusion receiving portion 65 is a plate member that connects the pair of side walls 35C, and is provided between the second shaft portion 43 and the first end portion 35A. When the first part 35 is displaced to the protruding position and the second part 37 is displaced to the second position, the surface constituting the protrusion 63 is the surface constituting the protrusion receiving portion 65 as shown in FIG. 5B. Contact with being pressed against. Thereby, since frictional resistance is generated between the protrusion 63 and the protrusion receiving portion 65, the second part 37 is prevented from rotating relative to the first part 35 by its own weight.

  When the first component 35 is in the non-projecting position (see FIG. 5A), the first component 35 is accommodated in the recess 67 described above. At that time, the second end 35 </ b> B of the first component 35 is directed to the upstream side in the sheet discharge direction and is disposed below the upper surface 22 </ b> B of the discharge tray 22. Further, when the second part 37 is in the first position (see FIG. 5A), a part is accommodated in the recess 67. At this time, the lower end of the second component 37 contacts the inner bottom surface of the recess 67.

[effect]
As described above, according to the ADF unit 3 </ b> B included in the multifunction machine 1, the stopper 33 is configured by the first part 35 and the second part 37 as described above. Therefore, the protrusion amount of the stopper 33 can be reduced by setting the first component 35 in the non-projecting position and the second component 37 in the first position. Therefore, when the ADF portion 3B is not used, the stopper 33 can be prevented from getting in the way by reducing the protruding amount of the stopper 33 from the discharge tray 22.

  Moreover, the amount of protrusion of the stopper 33 from the discharge tray 22 can be increased by setting the first component 35 in the protruding position and the second component 37 in the second position. it can. Therefore, when the ADF unit 3B is used, the stopper 33 can function properly by increasing the amount of protrusion of the stopper 33 from the discharge tray 22.

  Furthermore, when displacing the first component 35 and the second component 37 to the positions as described above, if the user puts a hand on the handle portion 53 of the second component 37 and performs an operation, the second component 37. The first part 35 can be displaced in conjunction with the displacement. More specifically, in a state where the stopper 33 is in the position shown in FIG. 6A (that is, a state where the first part 35 is arranged at the non-projecting position and the second part 37 is arranged at the first position). When the person pulls the second part 37 and slides it diagonally to the upper right, the second part 37 can be displaced to the position shown in FIG. 6B. When the user further pulls the second part 37, the first part 35 rotates to the position shown in FIG. 6C, and further passes through the position shown in FIG. 6D to the position shown in FIG. 6E.

  In a state where the stopper 33 is in the position shown in FIG. 6E (that is, the state where the first part 35 is disposed at the protruding position and the second part 37 is disposed at the second position), the user can If 37 is pushed back to the left, the stopper 33 can be returned to the position shown in FIG. 6A by the behavior opposite to that described above. Therefore, unlike the structure in which each part cannot be arranged at the expected position unless each of the parts is operated separately, the first part 35 and the second part 35 can be simply operated by operating the second part 37. Both parts 37 can be arranged at the intended positions, and the operability of the stopper 33 can be improved.

  In the case of the present embodiment, the stopper 33 contacts the sheet even when the second component 37 is in the first position. Therefore, when the dimension in the sheet discharge direction is small enough not to get over the stopper 33, the stopper 33 can be functioned even if the second component 37 remains in the first position. In the case of the present embodiment, the second component 37 includes the first plate portion 55, the second plate portion 57, and the coupling portion 59 as described above. The second bearing portion 45 can be configured.

  Moreover, in the case of this embodiment, since the positioning part 61 as mentioned above is provided, the 1st component 35 can be appropriately positioned in a protrusion position. In the present embodiment, the second component 37 has the flat surface 49 as described above. Therefore, in the case of a sheet having a long dimension in the sheet discharge direction, the sheet can be supported by the flat surface 49, so that the effect of regulating the leading end position of the sheet is enhanced compared to the case where there is no such flat surface 49. Can do.

  In the case of the present embodiment, the second component 37 has the convex portion 51 as described above. Therefore, in the case of a sheet having a long dimension in the sheet discharge direction, the convex portion 51 can contact the leading edge of the sheet. Therefore, compared to the case where there is no such convex portion 51, the effect of regulating the leading end position of the sheet Can be increased.

  In the case of this embodiment, since the second component 37 has the handle 53 as described above, the user can hold the second component 37 using the handle 53, and the stopper 33. The operability is improved. In the case of this embodiment, the first component 35 is accommodated in the recess 67 when in the non-projecting position, and the second component 37 is partially accommodated in the recess 67 when in the first position. The Therefore, since a part of the stopper 33 is accommodated in the concave portion 67, the stopper 33 can be disposed relatively lower than the case where the similar concave portion 67 is not provided, and the height dimension of the apparatus is reduced. It is effective.

  Further, in the case of the present embodiment, when the first component 35 is in the non-projecting position, the second end portion 35B directed to the upstream side in the sheet discharge direction is disposed below the upper surface 22B of the discharge tray 22. ing. Therefore, since the sheet discharged to the discharge tray 22 is not caught by the first component 35, the first component 35 does not prevent the sheet from being discharged.

[Other Embodiments]
As described above, the sheet conveying apparatus has been described with the exemplary embodiment, but the above-described embodiment is merely illustrated as one aspect of the present disclosure. In other words, the present disclosure is not limited to the exemplary embodiments described above, and can be implemented in various forms without departing from the technical idea of the present disclosure.

  For example, in the above-described embodiment, when the second component 37 is in the first position, the upper end 47B of the contact surface 47 protrudes from the upper surface 22B of the discharge tray 22, but the upper end 47B of the contact surface 47 is discharged. Whether or not to protrude from the upper surface 22B of the tray 22 is arbitrary. For example, when the second part 37 is in the first position, the upper end 47B of the contact surface 47 is disposed below the upper surface 22B of the discharge tray 22, and the stopper 33 does not protrude above the upper surface 22B of the discharge tray 22. The structure may be stored at the position.

  In the above embodiment, the sheet conveying apparatus incorporated in the image reading apparatus is illustrated as an example of the sheet conveying apparatus. However, the sheet conveying apparatus according to the present invention forms an image on (records) an original. It can also be employed in the apparatus. For example, in the sheet transport mechanism provided in the image forming apparatus, if the sheet transport apparatus of the present invention is adopted, the leading end position of the recording medium after image formation can be regulated by a stopper, and the recording medium is excessively pushed out in the ejection direction. Can be suppressed.

  In the above-described embodiment, the image reading apparatus configured as a multifunction machine is illustrated as an example of the image reading apparatus of the present invention. However, whether or not the image reading apparatus is configured as a multifunction machine is arbitrary. For example, the sheet conveying apparatus of the present invention can be employed even with a single-function image reading apparatus or image forming apparatus.

  You may comprise so that the function implement | achieved by the one component in each said embodiment may be implement | achieved by a some component. Moreover, you may comprise so that the function implement | achieved by the some component may be implement | achieved by one component. Moreover, you may abbreviate | omit a part of structure of each said embodiment. In addition, at least a part of the configuration of each of the above embodiments may be added to or replaced with the configuration of the other above embodiments. In addition, all the aspects contained in the technical idea specified from the wording described in a claim correspond to embodiment of this indication.

[Supplement]
As is clear from the exemplary embodiments described above, the sheet conveying apparatus of the present disclosure may further include the following configurations.

  First, in the sheet conveying device of the present disclosure, when the second component is in the first position, the upper end of the second component protrudes from the upper surface of the support portion, and a part of the contact surface is discharged to the support portion. You may be in the state arrange | positioned in the position which a sheet | seat can contact. According to the sheet conveying apparatus configured as described above, the sheet contacts the sheet even when the second component is in the first position. Therefore, when the dimension in the sheet discharge direction is small enough not to get over the stopper, the stopper can function while the second part is in the first position.

  Further, in the sheet conveying device of the present disclosure, the second component is configured in a plate shape, and one surface is a contact surface, and the second component is configured in a plate shape between the first plate portion. A second plate portion that is arranged in parallel with an interval, facing the surface behind the contact surface, and a coupling portion that couples the first plate portion and the second plate portion in the vicinity of the lower end of the contact surface; The groove or the long hole of the second bearing part is a gap formed between the first plate part and the second plate part, and the second shaft part may be disposed in the gap. . According to the sheet conveying apparatus configured as described above, an intended second bearing portion can be configured with a simple structure including the first plate portion, the second plate portion, and the coupling portion.

  Further, in the sheet conveying device of the present disclosure, the support unit is provided with a positioning unit that contacts the first component and stops the first component at the protruding position when the first component is displaced to the protruding position. May be. According to the sheet conveying apparatus configured as described above, the first component can be appropriately positioned at the protruding position.

  In the sheet conveying device of the present disclosure, the second component may have a flat surface extending from the upper end of the contact surface toward the downstream side in the sheet discharging direction. According to the sheet conveying apparatus configured as described above, in the case of a sheet having a long dimension in the sheet discharge direction, the sheet can be supported by a flat surface. Therefore, compared with a case where there is no such flat surface, The effect of regulating the tip position can be enhanced.

  In the sheet conveying device of the present disclosure, the second component may have a convex portion that protrudes upward from the flat surface at a location on the opposite side of the contact surface across the flat surface. According to the sheet conveying apparatus configured as described above, in the case of a sheet having a long dimension in the sheet discharge direction, the convex portion can contact the leading end of the sheet, so that compared with a case where there is no such convex portion. The effect of regulating the leading edge position of the sheet can be enhanced.

  In the sheet conveying device of the present disclosure, the second component may have a handle portion that is recessed downward from the flat surface at a position opposite to the flat surface across the convex portion. According to the sheet conveying apparatus configured as described above, since the user can hold the second part by using the handle portion, the operability of the stopper is improved.

  Further, in the sheet conveying device of the present disclosure, the support portion has a recess that is recessed downward from the upper surface of the support portion, and the first component is accommodated in the recess when in the non-projecting position, and the second component is When in the first position, a part may be accommodated in the recess. According to the sheet conveying apparatus configured as described above, since a part of the stopper is accommodated in the recess, the stopper can be disposed relatively lower than the case where the similar recess is not provided, and the height of the apparatus is increased. This is effective in reducing the vertical dimension.

  Further, in the sheet conveying device of the present disclosure, when the first component is in the non-projecting position, the second end portion directed toward the upstream side in the sheet discharge direction may be disposed below the upper surface of the support portion. Good. According to the sheet conveying apparatus configured as described above, since the sheet discharged to the support portion is not caught by the first component, the first component does not prevent the sheet from being discharged.

  DESCRIPTION OF SYMBOLS 1 ... MFP, 2 ... Main body unit, 3 ... Reading unit, 3A ... Flat bed part (FB part), 3B ... Automatic document conveyance part (ADF part), 5 ... Operation panel, 6 ... Medium discharge tray, 7 ... Front Cover, 8 ... Medium supply cassette, 11A ... First image sensor, 11B ... Second image sensor, 12 ... FB platen, 13A ... First ADF platen, 13B ... Second ADF platen, 14 ... Guide shaft, 15 ... Carriage, DESCRIPTION OF SYMBOLS 16 ... Toothed belt, 17 ... Press part, 20 ... Conveying part, 21 ... Supply tray, 22 ... Discharge tray, 22A ... End edge part of discharge tray, 22B ... Upper surface of discharge tray, 25 ... Suction roller, 26A ... Separation Roller, 26B ... Separation piece, 27A ... First transport roller, 27B ... First pinch roller, 28A ... Second transport roller, 28B ... Second pinch roller, 29A ... Discharge roller 29B ... discharge pinch roller, 31A ... first sheet pressing part, 31B ... second sheet pressing part, 33 ... stopper, 35 ... first part, 35A ... first end, 35B ... second end, 35C ... side wall, 37 ... second part, 39 ... first shaft part, 41 ... first bearing part, 43 ... second shaft part, 45 ... second bearing part, 47 ... contact surface, 47A ... lower end of contact surface, 47B ... contact surface 49 ... flat surface, 51 ... convex part, 53 ... handle part, 55 ... first plate part, 57 ... second plate part, 59 ... coupling part, 61 ... positioning part, 63 ... projection, 65 ... projection receiver Part, 67 ... concave part, 67A ... inner wall surface, 67B ... support wall.

Claims (9)

A transport unit capable of transporting a sheet along a transport path;
A support unit for supporting a sheet discharged from the transport unit;
A stopper that regulates the front end position of the sheet discharged to the support portion in the vicinity of the edge portion on the downstream side in the movement direction of the sheet in the support portion;
With
The stopper has a first part attached to the support part, and a second part attached to the first part,
One of the support portion and the first component is provided with a first shaft portion whose axial direction is directed in a direction perpendicular to the sheet moving direction in the support portion, and the other is provided with the first portion. By providing a first bearing portion that rotatably supports one shaft portion, the first component is configured to be rotatable relative to the support portion,
The first component has a first end portion that is an end portion close to the rotation center, and a second end portion that is an end portion that is farther from the rotation center than the first end portion, The component is configured to be rotatable between a non-projecting position where the second end portion does not protrude from the end edge portion and a protruding position where the second end portion protrudes from the end edge portion,
The second end portion is provided with a second shaft portion arranged in parallel with the first shaft portion, and the second component has a groove that supports the second shaft portion so as to be rotatable and slidable. Alternatively, by providing a second bearing portion having a long hole, the second part is configured to be rotatable relative to the first part and to be slidable in a direction in which the groove or the long hole extends,
The second part is a surface having an inclination that rises upward from a lower end on the upstream side in the movement direction of the sheet to an upper end on the downstream side, and the sheet discharged to the support portion comes into contact therewith A first position that contacts the contact surface when the sheet discharged from the transport unit has moved by a first movement amount, and the sheet discharged from the transport unit is the first Is configured to be displaceable to a second position in contact with the contact surface when the second movement amount is larger than the movement amount.
The sliding direction of the second part is a direction parallel to the contact surface, and when the second part is in the first position, the first part is in the non-projecting position, and the first part The two parts are arranged at a position slid obliquely downward from a position slid most diagonally upward, and when the second part is in the second position, the first part is in the protruding position, and The second part is disposed at a position slid most obliquely upward. The sheet conveying apparatus according to claim 1,
When the second part is in the first position, the upper end of the second part protrudes from the upper surface of the support part, and a part of the contact surface can contact the sheet discharged to the support part The sheet transport device is in a state where it is placed in the correct position. The sheet conveying apparatus according to claim 1 or 2, wherein
The second part is
A first plate portion configured in a plate shape and having one surface as the contact surface;
A second plate portion that is configured in a plate shape and is arranged in parallel with a space between the first plate portion and facing the surface on the back of the contact surface;
In the vicinity of the lower end of the contact surface, a coupling portion that couples the first plate portion and the second plate portion;
Have
The groove or slot of the second bearing portion is a gap formed between the first plate portion and the second plate portion, and the second shaft portion is disposed in the gap. apparatus. The sheet conveying device according to any one of claims 1 to 3,
The support portion is provided with a positioning portion that contacts the first component and stops the first component at the protruding position when the first component is displaced to the protruding position. . The sheet conveying device according to any one of claims 1 to 4, wherein
The second component has a flat surface extending from the upper end of the contact surface toward the downstream side in the sheet discharge direction. The sheet conveying apparatus according to claim 5,
The second component has a convex portion protruding upward from the flat surface at a position opposite to the contact surface across the flat surface. The sheet conveying device according to claim 6,
The second component has a handle portion that is recessed downward from the flat surface at a position opposite to the flat surface across the convex portion. The sheet conveying device according to any one of claims 1 to 7,
The support part has a recess that is recessed downward from the upper surface of the support part,
When the first part is in the non-projecting position, the first part is accommodated in the recess,
When the second component is in the first position, a part of the second component is accommodated in the recess. The sheet conveying device according to claim 8,
When the first component is in the non-projecting position, the second end portion directed to the upstream side in the sheet discharge direction is disposed below the upper surface of the support portion.