JP2018165207A - Sheet conveyance device and image recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet conveyance device which can more surely prevent a foreign substance such as dust and dirt floating in the periphery from entering into a device body and a feeding tray, and to provide an image recording device having the sheet conveyance device.SOLUTION: A sheet conveyance device includes a device body 2, a back feeding tray 5, and a dustproof cover 6, where the dustproof cover 6 has: a top plate part 6b which is rotatably supported by the device body 2 around a second rotation axis 6a; a pair of first side wall parts 6c which are provided to block a gap between the top plate part 6b and a sheet support surface 51 when viewed from an axial direction of the second rotation axis 6a when the back feeding tray 5 is in an open position and the top plate part 6b is in a close contact position; and a pair of side wall parts 6d which are provided to block a gap between the top plate part 6b and the sheet support surface 51 when viewed from an axial direction of the second rotation axis 6a when the back feeding tray 5 is in a close position and the top plate part 6b is in a close contact position.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a technology of a sheet conveying device and an image recording device, and more particularly to a technology of a dustproof cover that covers a sheet supporting surface in a feeding tray that supports a sheet.

2. Description of the Related Art Conventionally, a sheet conveying apparatus including an apparatus main body and a feeding tray that is rotatably supported with respect to the apparatus main body and supports a plurality of sheets, and an image recording apparatus including the sheet conveying apparatus are known. It has been.
In the sheet conveying apparatus, a plurality of stacked sheets are inserted from above and supported in advance on a feeding tray that is rotated in a direction away from the apparatus main body and held in a backward inclined posture. During the recording operation, the uppermost sheet is conveyed one by one into the apparatus main body in order.
For this reason, the upper part of the feeding tray is open, and foreign substances such as dust enter the apparatus body from the sheet conveying opening formed in the apparatus body, and there are prisoners that cause malfunction. It was.

Therefore, a technique for solving such a problem is disclosed in “Patent Document 1”.
That is, in the above-mentioned “Patent Document 1”, a box-shaped document receiving tray (in the present invention, the recording paper tray (corresponding to a feeding tray in the present invention) is covered so as to cover a portion opened to the outside. , Corresponding to a dust-proof cover) is disclosed that is rotatable and detachable with respect to the apparatus main body.

JP 2002-128365 A

However, in the dust-proof cover shown by the document receiving tray of “Patent Document 1”, the position of the rotation center of the feeding tray relative to the apparatus main body and the position of the rotation center of the dust-proof cover are different in the vertical direction. Due to this, when the feed tray is in the closed position close to the apparatus main body and in the open position separated from the apparatus main body, the dustproof cover is seen from the axial direction of the rotation center of the dust cover. The shape of the gap generated between the top plate portion and the sheet support surface of the feeding tray is different.
For this reason, in both cases, it is difficult to prevent foreign matters such as dust and dust floating in the air from entering the apparatus main body and the feeding tray through the gap.

  The present invention has been made in view of the above-described problems of the present situation, and includes a feeding tray that supports a plurality of sheets in a stacked state, and the number of sheets is 1 in order from the uppermost sheet supported by the feeding tray. A sheet conveying apparatus that conveys the sheet one by one into the apparatus main body, and an image recording apparatus including the sheet conveying apparatus, wherein foreign matter such as dust and dust floating around the intrusion into the apparatus main body and the feeding tray It is an object of the present invention to provide a sheet conveying apparatus that can be more reliably suppressed and an image recording apparatus including the sheet conveying apparatus.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

A sheet conveying apparatus and an image recording apparatus that solve the above problems have the following characteristics.
That is, the sheet conveying apparatus and the image recording apparatus are supported by the apparatus main body and the apparatus main body so as to be rotatable about the first rotation shaft, and are opened close to the apparatus main body and spaced apart from the apparatus main body. A feed tray having a sheet support surface that supports the sheet and is disposed on the apparatus main body side of the feed tray and covers the sheet support surface of the feed tray. The dust cover is supported by the apparatus body so as to be rotatable about a second rotation shaft disposed in parallel with the first rotation shaft above the first rotation shaft. A top plate portion provided so as to be displaceable between a proximity position close to the feed tray and a separation position spaced apart from the feed tray when the feed tray is in the open position; and The axial ends of the second rotating shaft When extending from the feeding tray side, when the feeding tray is in the open position and the top plate portion is in the close position, the top plate portion and the top plate portion as viewed from the axial direction of the second rotation shaft A pair of first side wall portions provided so as to close a gap between the sheet support surface and the first side wall portion at both axial ends of the second rotation shaft of the top plate portion. When the second turning shaft extends from the position shifted in the axial direction to the feeding tray side, the feeding tray is in the closed position, and the top plate portion is in the close position, the second turning A pair of second side wall portions provided so as to close a gap between the top plate portion and the sheet support surface when viewed from the axial direction of the shaft.

  According to the present invention, it is possible to more reliably suppress foreign matters such as dust and dust floating around the image recording apparatus from entering from the side surface of the dustproof cover and entering deep into the feeding tray.

1 is a perspective view showing a multifunction machine. FIG. 6 is a side cross-sectional view illustrating the sheet conveying apparatus in a state where a rear feeding tray is displaced to a closed position. FIG. 6 is a side cross-sectional view illustrating the sheet conveying apparatus in a state where a rear feeding tray is displaced to an open position. It is a figure which shows a dustproof cover, Comprising: It is the perspective view seen from the apparatus main body side. It is a figure which shows a dustproof cover, Comprising: It is the end surface perspective view seen in the direction of the arrow A in FIG. It is a figure which shows the sheet conveying apparatus of the state which the back surface feeding tray displaced to the open position, Comprising: It is an expanded side sectional view which showed the end wall part vicinity of a dustproof cover. It is a figure which shows the sheet conveying apparatus of the state which the back surface feeding tray displaced to the open position, Comprising: It is a front view which shows the state which the 2nd cover part of the dust-proof cover displaced to the apparatus main body side. It is a figure which shows the sheet conveying apparatus of the state which the back surface feeding tray displaced to the open position, Comprising: It is an expanded sectional side view which showed the end wall part vicinity of the dustproof cover in 2nd Embodiment. It is a figure which shows the sheet conveying apparatus of the state which the back surface feeding tray displaced to the open position, Comprising: It is an expanded side sectional view which showed the end wall part vicinity of the dustproof cover in 3rd Embodiment.

  Next, modes for carrying out the present invention will be described with reference to the accompanying drawings.

[Schematic configuration of MFP 1]
A multifunction device 1 shown in FIG. 1 is an embodiment of a multifunction device including an image recording apparatus according to the present invention, and includes a printer unit P as an example of the image recording device provided in the lower part, and a printer unit P. A scanner unit S disposed above is integrally provided. The multifunction device 1 has a printer function, a scanner function, a copy function, a facsimile function, and the like, and the printer unit P having the printer function is configured as an ink jet recording type printer.
In the following description, as shown in FIG. 1, the front-rear direction, the left-right direction, and the up-down direction are defined with reference to a state where the multifunction device 1 is installed so as to be usable.

  In the printer unit P, based on image data and the like input from various storage media such as external devices such as a computer, digital camera, and USB memory connected to the multifunction device 1 and a memory card attached to the multifunction device 1. Then, an image or the like is recorded on a sheet 18 such as a recording sheet (see, for example, FIG. 6).

The printer unit P has a device main body 2 formed in a substantially rectangular parallelepiped shape, and an opening 4 is formed in the left and right central portion of the front surface of the device main body 2. In the opening 4, a front feeding tray 20 that supports the sheet 18 in a substantially horizontal posture and a discharge tray 21 formed on the upper surface of the front feeding tray 20 are provided. The front feeding tray 20 is provided in two stages in the vertical direction, and the discharge tray 21 is provided on the upper surface of the upper front feeding tray 20.
In addition, an operation panel 22 having a display unit that displays the state and functions of the multifunction device 1 and an operation unit that performs input operations on the multifunction device 1 is provided on the front surface of the apparatus main body 2.

A rear feeding tray 5 that supports the sheet 18 is provided on the rear surface of the apparatus main body 2. The back feeding tray 5 is rotatably supported by the apparatus main body 2 via a housing portion 11 provided in the apparatus main body 2. Further, the apparatus main body 2 accommodates a recording unit 24 that records an image or the like on the sheet 18 supported by the front feeding tray 20 and the rear feeding tray 5.
The printer unit P includes a sheet conveying device 3 for conveying the sheet 18 supported by the back surface feeding tray 5 to the recording unit 24.

[Configuration of Sheet Conveying Device 3]
As shown in FIGS. 2 and 3, the sheet conveying apparatus 3 includes an apparatus main body 2, a back feeding tray 5, and a dust cover 6.
The back feeding tray 5 is supported by the apparatus main body 2 so as to be rotatable about the first rotation shaft 5a. Further, the dust cover 6 covers at least a part of the sheet support surface 51 of the back feeding tray 5.

Here, as viewed from the axial direction of the first rotation shaft 5a, a part of the sheet support surface 51, that is, the lower end portion, is not covered with the dust cover 6 on the side (region Z1 in FIG. 2). And a region Z2) in FIG.
However, these regions Z1 and Z2 are configured to be covered by the accommodating portion 11 (see FIG. 1).

  The back surface feeding tray 5 is an example of a feeding tray that is supported by the apparatus main body 2 so as to be rotatable about the first rotation shaft 5a.

  The sheet conveying device 3 feeds the sheets 18 supported by the rear surface feeding tray 5 one by one to a conveying path on the main body side by a feeding roller (not shown) positioned in front of the lower end portion of the rear surface feeding tray 5. It is a device that feeds it.

  Then, the sheet 18 fed from the back feeding tray 5 to the transport path passes through the opening formed on the front side of the first rotation shaft 5a in the apparatus main body 2 from the back feed tray 5 to the transport path. Be transported.

  The back feeding tray 5 is rotated about the first rotation shaft 5a, whereby a closed position close to the apparatus main body 2 (position shown in FIG. 2) and an open position separated from the apparatus main body 2 (FIG. 3). It is possible to displace between the position shown in FIG. Further, the upper surface when the back surface feeding tray 5 is in the open position is configured as a sheet support surface 51 that supports the sheet 18.

Here, as shown in FIG. 7, the sheet support surface 51 is provided with a pair of side guides 52 that can move in the left-right direction and regulate the position of the sheet 18 in the width direction.
In the sheet conveying apparatus 3, the side guides 52 are moved in the left-right direction according to the width direction size of the sheet 18 supported by the sheet support surface 51, so that a plurality of types of sheets 18 having different sheet widths are transferred to the sheet support surface 51 can be supported.

  In the sheet conveying device 3, the direction along the surface of the sheet 18 supported by the sheet supporting surface 51 and the direction orthogonal to the conveying direction is the left-right direction, and the width direction of the sheet 18 is the left-right direction. is there.

The dust cover 6 covers the sheet support surface 51 of the back feeding tray 5 so that foreign matters such as dust can enter the device main body 2 from the opening opening on the rear surface of the main body 2 on which the back feeding tray 5 is supported. It is a cover member for suppressing intrusion.
In addition, the said opening part means the opening part formed in the front side of the 1st rotating shaft 5a mentioned above.

  As shown in FIGS. 2 and 3, the dust cover 6 is disposed in parallel with the first rotation shaft 5 a above the first rotation shaft 5 a (specifically, obliquely upward). It has a top plate portion 6b that is rotatably supported by the apparatus main body 2 around the moving shaft 6a.

The dust cover 6 has a pair of first side wall portions 6c and a pair of second side wall portions 6d.
The pair of first side wall portions 6c are provided so as to extend from the left and right end portions (both end portions in the axial direction of the second rotation shaft 6a) of the top plate portion 6b to the rear side (the rear feed tray 5 side). Further, the pair of second side wall portions 6d are moved rearward from positions shifted in the left-right direction (the axial direction of the second rotation shaft 6a) with respect to the first side wall portion 6c at the left and right end portions of the top plate portion 6b. It is provided to extend.

  In the present embodiment, the pair of first side wall portions 6c are provided at positions shifted toward the left and right central portions of the dust cover 6 with respect to the pair of second side wall portions 6d.

  Further, the dust cover 6 is detachably provided on the housing portion 11 (see FIG. 1) via the lower end portion of the top plate portion 6b, so that the dust cover 6 is centered on the second rotating shaft 6a. The apparatus main body 2 is rotatably supported.

The dust cover 6 is rotated around the second rotation shaft 6a when the rear feeding tray 5 is in the open position, so that the proximity position close to the rear feeding tray 5 and the rear feeding tray. It is configured to be displaceable between a spaced position separated from 5.
Note that the proximity position means a position indicated by a solid line in FIG. Moreover, the said separation | spacing position means the position shown with the dashed-two dotted line in FIG.

The dust cover 6 has a first cover part 61 and a second cover part 62.
The first cover portion 61 is supported to be rotatable about the second rotation shaft 6a. In addition, the second cover part 62 is arranged in parallel with the second rotating shaft 6a at the upper end (the end opposite to the second rotating shaft 6a) of the first cover 61. The first cover portion 61 is rotatably supported around the rotation shaft 62a.

The first cover portion 61 includes a first top plate cover portion 61b and a pair of first side wall cover portions 61c.
The first top cover 61b is disposed to be separated from the sheet support surface 51 of the back feeding tray 5 on the front side (apparatus body 2 side) and extends in the left-right direction. Further, the pair of first side wall cover portions 61c are provided to extend rearward from the left and right end portions of the first top plate cover portion 61b.

  And the end surface 63 of the back side (back surface feeding tray 5 side) of the 1st side wall cover part 61c is formed in the flat surface parallel to the plane part 64 of the 1st top-plate cover part 61b.

On the other hand, the 2nd cover part 62 has the 2nd top-plate cover part 62b, and a pair of 2nd side wall cover part 62c and the 3rd side wall cover part 62d.
The second top plate cover part 62b is arranged to be separated from the sheet support surface 51 of the back surface feeding tray 5 in the front side and provided to extend in the left-right direction. The pair of second side wall cover part 62c and third side wall cover part 62d extend rearward from the left and right end parts (both axial end parts of the third rotating shaft 62a) of the second top plate cover part 62b. Provided.

  And in this embodiment, the top-plate part 6b of the dust-proof cover 6 is comprised by the 1st top-plate cover part 61b and the 2nd top-plate cover part 62b. The first side wall cover portion 61c and the second side wall cover portion 62c constitute the first side wall portion 6c of the dust cover 6. Furthermore, the second side wall portion 6d of the dustproof cover 6 is configured by the third side wall cover portion 62d.

Here, as shown in FIGS. 4 and 5, the pair of second side wall cover parts 62c is located on both the left and right sides (axial center side of the third rotation shaft 62a) with respect to the pair of third side wall cover parts 62d. It is provided at a shifted position.
In the present embodiment, the pair of second side wall cover portions 62c are provided at positions shifted to the left and right central portions of the second cover portion 62 with respect to the pair of third side wall cover portions 62d. .

Further, as shown in FIG. 3, the end face 65 on the rear side of the first side wall portion 6c (on the back surface feeding tray 5 side) in the dust cover 6, that is, the rear side of the second side wall cover portion 62c is formed in an inclined surface. ing.
Specifically, the inclined surface approaches the second top plate cover portion 62b toward the second top plate cover portion 62b constituting the top plate portion 6b as it goes away from the second rotation shaft 6a. It is formed to have a shape inclined to the side.

The dust cover 6 has the back feeding tray 5 in the open position and the top plate portion 6b (more specifically, the second top plate cover portion 62b) of the dust cover 6 is in the close position. The sheet feeding surface 51 is configured to abut against the sheet support surface 51 of the back feeding tray 5.
Thereby, for example, when the back surface feed tray 5 is in the open position and the top plate portion 6b of the dust cover 6 is in the close position, the dust cover 6 is more reliably positioned with respect to the back surface feed tray 5. Can do.

  Further, the end surface 65 on the sheet support surface 51 side of the second side wall cover portion 62c is in contact with the sheet support surface 51 as a whole, so that a gap is generated between the second top plate cover portion 62b and the sheet support surface 51. It is possible to increase the degree of occlusion when the second side wall cover 62c is closed.

  On the other hand, as shown in FIG. 2, the third side wall cover part 62d constituting the second side wall part 6d of the dust cover 6 is more rearward (back feeding tray 5 side) than the second side wall cover part 62c. It is extended and provided.

  When the rear feeding tray 5 is in the closed position and the top plate portion 6b (more specifically, the second top plate cover portion 62b) of the dustproof cover 6 is in the close position, the second top plate cover The length from the part 62b to at least the sheet support surface 51 is formed.

With such a configuration, since the end surface 65 of the second side wall cover portion 62c is an inclined surface, a gap is generated between the end surface 65 and the sheet support surface 51 when the back feeding tray 5 is in the closed position. However, the gap can be closed by the third side wall cover portion 62d.
Therefore, it is possible to more reliably suppress foreign matters such as dust and dust floating around from entering from the side surface of the dust-proof cover 6 and entering deeper on the rear feeding tray 5.

  The dust cover 6 is configured by the first cover portion 61 and the second cover portion 62 having the above-described configuration.

That is, the dustproof cover 6 includes a first side wall cover part 61c and a second side wall cover part 62c that constitute a pair of first side wall parts 6c.
Here, the first side wall cover part 61c and the second side wall cover part 62c are arranged on the axis of the second rotation shaft 6a when the back feeding tray 5 is in the open position and the top plate part 6b is in the close position. It is provided so as to close the gap between the top plate portion 6b and the sheet support surface 51 when viewed from the direction.

Further, the dust cover 6 has a third side wall cover part 62d that constitutes a pair of second side wall parts 6d.
Here, the third side wall cover portion 62d has a top plate portion as viewed from the axial direction of the second rotation shaft 6a when the rear feeding tray 5 is in the closed position and the top plate portion 6b is in the close position. 6b and the sheet support surface 51 are provided so as to close the gap.

With such a configuration, the position of the rotation center of the rear feeding tray 5 and the rotation center of the dust cover 6 are changed in the vertical direction when viewed from the axial direction of the second rotation shaft 6a. The gap between the top plate portion 6b and the sheet support surface 51 can be sufficiently closed.
The center of rotation of the back feeding tray 5 is indicated by the first rotation shaft 5a. The rotation center of the dust cover 6 is indicated by the second rotation shaft 6a.

  Specifically, the back feeding tray 5 is in the open position and the top plate portion 6b is in the close position, and the back feeding tray 5 is in the closed position and the top plate portion 6b is in the separated position. The gaps having different shapes can be sufficiently closed by the first side wall 6c or the second side wall 6d.

  Therefore, it is possible to more reliably suppress foreign matters such as dust and dust floating around from entering from the side surface of the dust-proof cover 6 and entering deeper on the rear feeding tray 5.

  By the way, as shown in FIG. 6, the 2nd cover part 62 is the upper end part in the 2nd top-plate cover part 62b which comprises the top-plate part 6b (end on the opposite side to the edge part by the side of the 3rd rotating shaft 62a). Part) is provided with an end wall part 62e extending from the rear side to the rear side (rear feed tray 5 side). In addition, a rectangular notch 66 extending in a direction parallel to the third rotation shaft 62a is formed at the rear end (the end on the sheet support surface 51 side) of the end wall 62e.

  And the dimension (dimension X in FIG. 6) from the edge part by the side of the sheet support surface 51 of the part in which the notch part 66 in the end wall part 62e was formed to the sheet support surface 51 is the sheet | seat of the back surface feeding tray 5. It is set to be larger than the thickness dimension (dimension Y in FIG. 6) of the plurality of sheets 18 supported in a fully loaded state, that is, the sheet 18 can be placed on the support surface 51 at the maximum.

  For example, as shown in FIGS. 6 and 7, when the user places the sheet 18 on the back surface feeding tray 5 when the back surface feeding tray 5 is in the open position, the user first places the second cover. The part 62 is rotated toward the apparatus main body 2 (position indicated by a two-dot chain line in FIG. 6).

  Then, after the sheet 18 is placed on the rear feeding tray 5, the side guide 52 is operated according to the size of the sheet 18, and finally the second cover portion 62 is rotated to the rear feeding tray 5 side (FIG. 6). Position indicated by a solid line).

  Therefore, according to the structure of the 2nd cover part 62, while being able to visually recognize the state on the back surface feeding tray 5 easily through the notch part 66, it becomes easy to operate the side guide 52, and work efficiency is improved. Can be improved.

[First Embodiment]
In the above-described embodiment, the notch portion 66 formed in the end wall portion 62e of the second cover portion 62 is open. However, in order to more effectively suppress foreign matters such as dust and dust floating around the multifunction machine 1 from entering the dustproof cover 6, the flap member 71 for closing the notch portion 66 is It is good also as providing in the end wall part 62e.

  Specifically, as shown in FIG. 8, on the upper surface side of the end wall portion 62e, the fourth rotation shaft 71a disposed in parallel with the third rotation shaft 62a (see, for example, FIG. 6) is the center. It is good also as providing the flap member 71 which is supported so that rotation and covers the notch part 66 is possible.

The flap member 71 has a specific gravity higher than that of the members constituting the other parts of the second cover part 62 (that is, the second top plate cover part 62b, the second side wall cover part 62c, the third side wall cover part 62d, etc.). Is preferably formed of a small lightweight member such as a nonwoven fabric or chemical fiber.
Alternatively, the flap member 71 is preferably formed of a sliding member having a higher slidability than a member constituting the other part of the second cover portion 62, such as a thermoplastic resin.

  According to such a configuration, for example, when the sheet 18 on the back surface feeding tray 5 is fed into the apparatus main body 2, foreign matters such as dust and dirt accumulated on the surface of the sheet 18 are removed by the flap member 71. Even so, the sliding load applied to the sheet 18 can be reduced.

[Second Embodiment]
In the first alternative embodiment, the flap member 71 is formed of a lightweight member or a sliding member in order to reduce the sliding resistance applied to the sheet 18. However, the present invention is not limited thereto, and the roller member 72 may be provided at the end of the flap member 71.
Specifically, as shown in FIG. 9, the flap member 71 is attached to an end portion on the opposite side to the end portion on the fourth rotation shaft 71a side, and is arranged in parallel with the fourth rotation shaft 71a. The roller member 72 is rotatable around the fifth rotation shaft 71b.

  Here, a plurality of the roller members 72 may be provided along the end portion of the flap member 71, or one member having a length substantially equal to the end portion may be provided.

  According to such a configuration, for example, when the flap member 71 removes foreign matter such as dust accumulated on the surface of the sheet 18 when the sheet 18 on the back feeding tray 5 is fed into the apparatus main body 2, the flap member Regardless of the material 71, the sliding load applied to the sheet 18 can be reduced.

[Effect in this embodiment]
The image recording apparatus (printer unit P) in this embodiment includes a sheet conveying device 3 as described below.
That is, the sheet conveying apparatus 3 includes the apparatus main body 2, the back surface feeding tray 5, and the dustproof cover 6. The dust cover 6 has a top plate portion 6b, a pair of first side wall portions 6c, and a pair of second side wall portions 6d.

  And the top-plate part 6b is rotatably supported by the apparatus main body 2 centering | focusing on the 2nd rotating shaft 6a. In addition, the pair of first side wall portions 6c has a top plate portion as viewed from the axial direction of the second rotating shaft 6a when the rear feeding tray 5 is in the open position and the top plate portion 6b is in the close position. 6b and the sheet support surface 51 are provided so as to close the gap.

  Further, the pair of second side wall portions 6d has a top plate portion as viewed from the axial direction of the second rotation shaft 6a when the rear feeding tray 5 is in the closed position and the top plate portion 6b is in the close position. 6b and the sheet support surface 51 are provided so as to close the gap.

With such a configuration, the position of the rotation center of the rear feeding tray 5 and the rotation center of the dust cover 6 are changed in the vertical direction when viewed from the axial direction of the second rotation shaft 6a. The gap between the top plate portion 6b and the sheet support surface 51 can be sufficiently closed.
The center of rotation of the back feeding tray 5 is indicated by the first rotation shaft 5a. The rotation center of the dust cover 6 is indicated by the second rotation shaft 6a.

  Specifically, the back feeding tray 5 is in the open position and the top plate portion 6b is in the close position, and the back feeding tray 5 is in the closed position and the top plate portion 6b is in the separated position. The gaps having different shapes can be sufficiently closed by the first side wall 6c or the second side wall 6d.

  Therefore, it is possible to more reliably suppress foreign matters such as dust and dust floating around from entering from the side surface of the dust-proof cover 6 and entering deeper on the rear feeding tray 5.

The end surface of the first side wall portion 6c on the sheet support surface 51 side is formed as an inclined surface that inclines toward the side closer to the top plate portion 6b with respect to the top plate portion 6b in a direction away from the second rotation shaft 6a. Is done.
Further, the end surface of the first side wall portion 6c on the sheet support surface 51 side generally contacts the sheet support surface 51 when the back feeding tray 5 is in the open position and the top plate portion 6b is in the close position. It comes to touch.

  With such a configuration, for example, when the rear feeding tray 5 is in the open position and the top plate portion 6b of the dustproof cover 6 is in the close position, the dustproof cover 6 is more reliably positioned with respect to the rear feeding tray 5. Can be done. Further, it is possible to increase the degree of closing when the gap formed between the top plate portion 6b and the sheet support surface 51 is closed by the first side wall portion 6c.

  The second side wall portion 6d is formed to have a length from the top plate portion 6b to at least the sheet support surface 51 when the rear feeding tray 5 is in the closed position and the top plate portion 6b is in the close position. ing.

  With such a configuration, since the end surface 65 of the first side wall portion 6c is an inclined surface, a gap is generated between the end surface 65 and the sheet support surface 51 when the rear feeding tray 5 is in the closed position. The gap can be closed by the second side wall portion 6d.

The dust-proof cover 6 is supported by the first cover portion 61 so as to be rotatable about the second rotation shaft 6a and the first cover portion 61 about the third rotation shaft 62a. And a second cover portion 62.
Further, the second cover portion 62 has an end wall portion 62e extending from the end portion of the top plate portion 6b to the back surface feeding tray 5 side.

A rectangular notch 66 is formed at the end of the end wall 62e on the sheet support surface 51 side.
Further, the dimension from the end portion on the sheet support surface 51 side of the portion where the notch portion 66 is formed in the end wall portion 62e to the sheet support surface 51 is supported in a fully loaded state on the sheet support surface 51 of the rear feeding tray 5. It is comprised so that it may become larger than the thickness dimension of the some sheet | seat 18 made.

  With such a configuration, the state on the rear feeding tray 5 can be easily visually recognized through the notch portion 66, and the side guide 52 can be easily operated, so that the work efficiency can be improved. .

In the first alternative embodiment, the second cover portion 62 is pivotally supported by the portion where the notch portion 66 is formed in the end wall portion 62e with the fourth rotation shaft 71a as the center. A flap member 71 is provided to cover the notch 66.
The flap member 71 is formed of a light-weight member having a specific gravity smaller than that of the members constituting the other parts of the second cover portion 62. Alternatively, the flap member 71 is formed of a sliding member having a higher slidability than members constituting other parts of the second cover portion 62.

  With such a configuration, for example, when the sheet 18 on the back surface feeding tray 5 is fed into the apparatus main body 2, foreign matter such as dust and dirt accumulated on the surface of the sheet 18 is removed by the flap member 71. However, the sliding load applied to the sheet 18 can be reduced.

  In the second alternative embodiment, the second cover portion 62 is pivotally supported by a portion where the notch portion 66 is formed in the end wall portion 62e around the fourth rotation shaft 71a, and is also cut off. A flap member 71 is provided to cover the notch 66. Further, the flap member 71 is attached to an end opposite to the end on the fourth rotation shaft 71a side, and rotates around a fifth rotation shaft 71b disposed in parallel with the fourth rotation shaft 71a. It has a possible roller member 72.

  According to such a configuration, for example, when the flap member 71 removes foreign matter such as dust accumulated on the surface of the sheet 18 when the sheet 18 on the back feeding tray 5 is fed into the apparatus main body 2, the flap member Regardless of the material 71, the sliding load applied to the sheet 18 can be reduced.

2 Device body 3 Sheet transport device 5 Rear feed tray (feed tray)
5a 1st rotation axis 6 dustproof cover 6a 2nd rotation axis 6b top plate part 6c 1st side wall part 6d 2nd side wall part 18 sheet 24 recording part (image recording part)
51 sheet support surface 61 first cover portion 62 second cover portion 62a third rotation shaft 62e end wall portion 66 notch portion 71 flap member 71a fourth rotation shaft 71b fifth rotation shaft 72 roller member P printer portion ( Image recording device)

Claims (8)

The device body;
A sheet that is supported by the apparatus main body so as to be rotatable about a first rotation axis, is displaceable between a closed position close to the apparatus main body and an open position spaced apart from the apparatus main body, and supports the sheet A feeding tray having a support surface;
A dustproof cover disposed on the apparatus main body side of the feeding tray and covering at least a part of the sheet supporting surface of the feeding tray;
The dust cover is
Above the first rotation shaft, the device main body is rotatably supported around a second rotation shaft arranged in parallel with the first rotation shaft, and the feeding tray is in the open position. At a certain time, a top plate portion provided so as to be displaceable between a proximity position close to the feeding tray and a separation position spaced apart from the feeding tray;
When the top plate portion extends from both axial ends of the second rotation shaft to the feed tray side, the feed tray is in the open position, and the top plate portion is in the proximity position, A pair of first side wall portions provided so as to close a gap between the top plate portion and the sheet support surface when viewed from the axial direction of the second rotation shaft;
Extending from the position shifted in the axial direction of the second rotation shaft to the feeding tray side with respect to the first side wall portion at both axial ends of the second rotation shaft of the top plate portion, When the feeding tray is in the closed position and the top plate portion is in the close position, the gap between the top plate portion and the sheet support surface is closed when viewed from the axial direction of the second rotation shaft. A pair of second side walls provided in this manner,
A sheet conveying apparatus. The end surface of the first side wall portion on the sheet support surface side is
With respect to the top plate portion, it is formed on an inclined surface that is inclined toward the side approaching the top plate portion as it goes away from the second rotation shaft,
When the feeding tray is in the open position and the top plate is in the proximity position,
Abutting the sheet support surface as a whole;
The sheet conveying apparatus according to claim 1. The second side wall portion is
When the feeding tray is in a closed position and the top plate portion is in a close position, the feed tray is formed to a length from the top plate portion to at least the sheet support surface.
The sheet conveying apparatus according to claim 2. The dust cover is
A first cover part rotatably supported about the second rotation axis;
At the end of the first cover portion opposite to the second rotation shaft side, the first cover portion is centered on a third rotation shaft disposed in parallel with the second rotation shaft. A second cover part rotatably supported;
The second cover part is
An end wall portion extending from the end portion on the opposite side to the end portion on the third rotating shaft side of the top plate portion to the feeding tray side;
A rectangular notch that extends in a direction parallel to the third rotation axis is formed at the end of the end wall on the sheet support surface side,
A plurality of dimensions of the end wall portion where the notch portion is formed from the end portion on the sheet support surface side to the sheet support surface are supported in a fully loaded state on the sheet support surface of the feeding tray. Greater than the sheet thickness dimension,
The sheet conveying apparatus according to any one of claims 1 to 3, wherein the sheet conveying apparatus is characterized by the above. The second cover part is
Centered on a fourth rotation shaft arranged in parallel with the third rotation shaft, the end wall portion is rotatably supported by a portion where the notch portion is formed, and the notch portion A flap member covering
The flap member is
Formed by a lightweight member having a specific gravity smaller than that of a member constituting the other part of the second cover part,
The sheet conveying apparatus according to claim 4, wherein The second cover part is
Centered on a fourth rotation shaft arranged in parallel with the third rotation shaft, the end wall portion is rotatably supported by a portion where the notch portion is formed, and the notch portion A flap member covering
The flap member is
Formed by a sliding member having a higher slidability than a member constituting the other part of the second cover part,
The sheet conveying apparatus according to claim 4, wherein The second cover part is
Centered on a fourth rotation shaft arranged in parallel with the third rotation shaft, the end wall portion is rotatably supported by a portion where the notch portion is formed, and the notch portion A flap member covering
The flap member is
A roller member attached to an end opposite to the end on the fourth rotating shaft side and rotatable about a fifth rotating shaft disposed in parallel with the fourth rotating shaft;
The sheet conveying apparatus according to claim 4, wherein The sheet conveying apparatus according to any one of claims 1 to 7, and an image recording unit that records an image on the sheet conveyed by the sheet conveying apparatus.
An image recording apparatus.

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