JP2018165209A - Sheet conveying apparatus and image recording apparatus - Google Patents

Abstract

A sheet conveying apparatus capable of more reliably suppressing foreign matters such as dust and dust floating around the apparatus from entering the apparatus main body and a feeding tray, and image recording including the sheet conveying apparatus. Providing equipment. An apparatus body includes a main body, a back feeding tray that is rotatably supported by the main body, and a dustproof cover that covers a sheet support surface of the back feeding tray. The first end 62 is disposed between the sheet support surface 51 and is rotatably supported by the dust cover 6 about a second rotation shaft 62a parallel to the first rotation shaft 5a. A second end portion 63 opposite to 62 has a flap member 61 that comes into contact with the surface of the uppermost sheet 18 among the sheets 18 supported by the back feeding tray 5. [Selection] 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, there has been known a sheet conveying apparatus that includes an apparatus main body, a sheet feeding apparatus that is rotatably supported with respect to the apparatus main body and supports a sheet, and an image recording apparatus that includes the sheet conveying apparatus. Yes.
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, when a sheet is conveyed into the apparatus main body, foreign objects such as dust enter the apparatus main body from the sheet conveying opening formed in the apparatus main 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 “Patent Document 1”, the uppermost transported member (corresponding to a sheet in the present invention) accommodated in a transport device (corresponding to a feeding tray in the present invention). A technique is disclosed that includes a dust removing member that is always in contact with the surface of a member to remove dust, foreign matter, and the like on the conveyed member to be conveyed.

JP 2005-187166 A

If the dust removing member according to the above-mentioned “Patent Document 1” is used, when the sheet on the feeding tray is fed into the apparatus main body, foreign matters such as dust and dust accumulated on the surface of the sheet can be removed. These foreign substances can be prevented from entering the apparatus main body and the feeding tray.
However, in such a dust removing member, a gap is generated between the dust removing member and the sheet on the side surface side, that is, in the width direction side of the sheet, so that dust, dust, etc. floating in the air through the gap It was difficult to prevent foreign matter from entering the apparatus main body or the feeding tray.

  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 that includes the sheet conveying apparatus, wherein foreign matters 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 separated from the apparatus main body. A feed tray that supports a sheet and a dust-proof cover that covers a sheet support surface of the feed tray, and is disposed between the dust-proof cover and the sheet support surface. The first end is pivotally supported by the dust-proof cover about a second rotation axis parallel to the first rotation axis, and the second end opposite to the first end is A flap member that contacts the surface of the uppermost sheet among the sheets supported by the feeding tray is provided.

  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 the apparatus main body and 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 the back surface feeding tray provided with the dustproof cover, Comprising: It is the front view seen from the apparatus main body side.

  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. 2).

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.
Here, the back surface feeding tray 5 is supported by the apparatus main body 2 so as to be rotatable about the first rotation shaft 5 a and has a sheet support surface 51 that supports the sheet 18. The dust cover 6 covers the sheet support surface 51 of the back feeding tray 5.

  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. The sheet 18 fed from the back feeding tray 5 to the conveyance path passes through an opening (not shown) formed on the front side of the first rotation shaft 5 a in the apparatus main body 2. To the transport path.

  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. 4, 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.

Specifically, the pair of side guides 52 is configured to be displaceable between a proximity position where the side guides 52 are close to each other and a separation position where the side guides 52 are apart from each other by moving in the left-right direction. Has been.
The proximity position means the position of the side guide 52A indicated by a solid line in FIG. Further, the separated position means the position of the side guide 52B indicated by a two-dot chain line in FIG.

  In the sheet conveying device 3, a plurality of types of sheets 18 having different sheet widths are moved by moving the pair of side guides 52 in the left-right direction in accordance with the size in the width direction of the sheet 18 supported by the sheet support surface 51. Can be supported on the sheet support surface 51.

  For example, when the pair of side guides 52 are in the close position, the position in the width direction (left and right direction) of the sheet having the minimum outer size (the sheet 18A indicated by a solid line in FIG. 4) is determined by the side guide 52. Be regulated. Further, when the pair of side guides 52 are in the separated positions, the position in the width direction (left-right direction) of the sheet having the maximum outer size (the sheet 18B indicated by a two-dot chain line in FIG. 4) is the side guide. 52.

  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.

2 and 3, the dust cover 6 covers the sheet supporting surface 51 of the back feeding tray 5, thereby opening the apparatus main body 2 from an opening opening on the rear surface of the apparatus main body 2 on which the back feeding tray 5 is supported. It is a cover member for suppressing foreign matter such as dust from entering the inside.
In addition, the said opening part means the opening part formed in the front side of the 1st rotating shaft 5a mentioned above.

  Further, the dust cover 6 has a plurality of (in the present embodiment, two) flap members 61 disposed between the dust cover 6 and the sheet support surface 51.

  Here, the flap member 61 in the present embodiment includes a first flap member 61A provided at the center in the vertical direction of the dustproof cover 6 and a second flap member 61B provided on the upper end surface of the dustproof cover 6. .

  In addition, about the structure of the flap member 61, it is not limited to what has two types of flap members which consist of 1st flap member 61A and 2nd flap member 61B like this embodiment. That is, as will be described later, it is sufficient to have at least one of the flap members (the first flap member 61A or the second flap member 61B). Moreover, you may have 3 or more types of flap members.

  Each of the flap members 61 (the first flap member 61A or the second flap member 61B) has a dust-proof cover centering around a second rotation shaft 62a whose first end 62 is parallel to the first rotation shaft 5a. 6 is rotatably supported. Each of the flap members 61 (the first flap member 61A or the second flap member 61B) has a sheet 18 in which the second end 63 opposite to the first end 62 is supported by the back feeding tray 5. It is comprised so that the surface of the said uppermost sheet | seat may be contacted.

  With such a configuration, the dust cover 6 can effectively prevent foreign matters such as dust and dust floating around from entering the apparatus main body 2 and the back feeding tray 5.

  Even if these foreign substances enter through the opening 66, the second end 63 of the flap member 61 is in contact with the surface of the uppermost sheet 18. It is possible to more reliably suppress the intrusion to the depth of the. Further, since the second end portion 63 of the flap member 61 is in contact with the surface of the uppermost sheet 18, these foreign matters attached to the surface of the sheet 18 are conveyed along with the conveyance of the sheet 18. It is possible to more reliably suppress the intrusion to the upper depth.

  Further, as shown in FIG. 4, the first flap member 61A constituting the flap member 61 has a plurality of flap pieces 61a arranged adjacently along the left-right direction (the axial direction of the second rotation shaft 62a). doing. Each flap piece 61a can individually rotate about the second rotation shaft 62a.

With such a configuration, even for various types of sheets 18 having different outer sizes in the width direction (left-right direction), the sheet support surface 51 and the leading end portions of the flap members 61 (second portions) on both sides in the width direction of the sheet 18. There is no gap between the end 63).
Accordingly, it is possible to more reliably suppress foreign matters such as dust and dust that have entered through the opening 66 on the upper end surface of the dust cover 6 from entering further deep into the sheet support surface 51.

By the way, as shown in FIG.2 and FIG.3, the dust-proof cover 6 in this embodiment has 6 A of 1st cover members, and the 2nd cover member 6B.
Here, the first cover member 6 </ b> A is detachably disposed on the rear feeding tray 5 in the vicinity of the first rotation shaft 5 a. The second cover member 6B is disposed at a position farther from the first rotation shaft 5a than the first cover member 6A, and the first cover member 6B is centered on a third rotation shaft 6a parallel to the first rotation shaft 5a. The cover member 6A is rotatably supported.

Further, the second cover member 6B is configured to be displaceable between a first position close to the back feeding tray 5 and a second position spaced apart from the back feeding tray 5 around the third rotation shaft 6a. ing.
The first position means the position of the second cover member 6B1 indicated by a solid line in FIG. Further, the second position means the position of the second cover member 6B2 indicated by a two-dot chain line in FIG.

  The flap member 61 is supported by at least one of the first cover member 6A and the second cover member 6B.

For example, as described above, in the present embodiment, the first cover member 6A constituting the flap member 61 is rotatably supported by the first cover member 6A, and the flap member 61 is constituted by the second cover member 6B. The 2nd flap member 61B to be supported is rotatably supported.
That is, in this embodiment, the flap member 61 is supported by both the first cover member 6A and the second cover member 6B.

  With such a configuration, even in the dust-proof cover 6 having a divided structure including the first cover member 6A and the second cover member 6B, foreign matters such as dust and dust that have entered through the opening 66 are further absorbed on the sheet support surface 51. It is possible to more reliably suppress the intrusion to the depth of the.

Further, when the flap member 61 (first flap member 61A) is provided on the first cover member 6A, fine foreign matter enters from the gap between the connecting portions of the first cover member 6A and the second cover member 6B, and the sheet support It is possible to more reliably suppress the intrusion deep into the surface 51.
Furthermore, when the flap member 61 (the first flap member 61A and the second flap member 61B) is provided on the first cover member 6A and the second cover member 6B, the foreign matter that has entered through the opening 66 is deep on the sheet support surface 51. It is possible to more reliably suppress the intrusion.

[Another embodiment]
In the above-described embodiment, the material of the flap member 61 is not particularly limited.
However, for the purpose of reducing the sliding load applied to the sheet 18 when the sheet 18 on the rear feeding tray 5 is conveyed into the apparatus main body 2, the flap member 61 is made of a lightweight member, a sliding member, or the like. It is good also as forming.

  Here, as the lightweight member, for example, a member having a small specific gravity made of a nonwoven fabric, a chemical fiber or the like can be cited. In addition, examples of the sliding member include a highly slidable member made of, for example, a thermoplastic resin.

  Further, as another embodiment for reducing the sliding load applied to the seat 18, the end portion (second end portion 63) of the flap member 61, the first end portion 62 and the second end portion 63 of the flap member 61 are provided. It is good also as providing a roller member between. That is, the roller member only needs to be provided so as to contact the sheet surface of the uppermost sheet 18.

[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 flap member 61 disposed between the dust cover 6 and the sheet support surface 51.

  Here, the flap member 61 is supported by the dust cover 6 so that the first end 62 is rotatable about a second rotation shaft 62 a parallel to the first rotation shaft 5 a, and the first end 62. The second end portion 63 on the opposite side comes into contact with the surface of the uppermost sheet 18 supported by the rear feeding tray 5.

With such a configuration, the dust-proof cover 6 and the flap member 61 can effectively prevent foreign matters such as dust and dust floating around from entering the apparatus main body 2 and the rear feeding tray 5. .
In particular, since the second end portion 63 of the flap member 61 is in contact with the surface of the uppermost sheet 18, these foreign matters attached to the surface of the sheet 18 are transferred to the rear feeding tray as the sheet 18 is conveyed. It is possible to more reliably suppress the intrusion to the depth of 5.

  Moreover, the flap member 61 is comprised so that it may consist of the some flap piece 61a arrange | positioned adjacently along the axial direction of the 2nd rotating shaft 62a.

With such a configuration, even for various types of sheets 18 having different outer sizes in the width direction (left-right direction), the sheet support surface 51 and the leading end portions of the flap members 61 (second portions) on both sides in the width direction of the sheet 18. There is no gap between the end 63).
Accordingly, it is possible to more reliably suppress foreign matters such as dust and dust that have entered through the opening 66 on the upper end surface of the dust cover 6 from entering further deep into the sheet support surface 51.

  Moreover, the dust cover 6 has a first cover member 6A and a second cover member 6B.

  Here, the first cover member 6 </ b> A is detachably disposed on the rear feeding tray 5 in the vicinity of the first rotation shaft 5 a. The second cover member 6B is disposed at a position farther from the first rotation shaft 5a than the first cover member 6A, and the first cover member 6B is centered on a third rotation shaft 6a parallel to the first rotation shaft 5a. The cover member 6A is rotatably supported. Further, the second cover member 6 </ b> B is configured to be displaceable between a first position that is close to the back surface feeding tray 5 and a second position that is separated from the back surface feeding tray 5.

  The flap member 61 is supported by at least one of the first cover member 6A and the second cover member 6B.

  With such a configuration, even in the dust-proof cover 6 having the divided structure including the first cover member 6A and the second cover member 6B, foreign matters such as dust and dust that have entered through the opening 66 are further absorbed on the sheet support surface 51. It is possible to more reliably suppress the intrusion to the depth of the.

Further, when the flap member 61 (first flap member 61A) is provided on the first cover member 6A, fine foreign matter enters from the gap between the connecting portions of the first cover member 6A and the second cover member 6B, and the sheet support It is possible to more reliably suppress the intrusion deep into the surface 51.
Furthermore, when the flap member 61 (the first flap member 61A and the second flap member 61B) is provided on the first cover member 6A and the second cover member 6B, the foreign matter that has entered through the opening 66 is deep on the sheet support surface 51. It is possible to more reliably suppress the intrusion.

2 Device body 3 Sheet transport device 5 Rear feed tray (feed tray)
5a 1st rotation axis 6 dustproof cover 6A 1st cover member 6B 2nd cover member 6a 3rd rotation axis 18 sheet 24 recording part (image recording part)
51 Sheet Support Surface 61 Flap Member 61a Flap Piece 62 First End 62a Second Rotating Shaft 63 Second End P Printer Unit (Image Recording Device)

Claims (4)

The device body;
The apparatus main body is supported so as to be rotatable about a first rotation axis, and 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 a sheet. The sending tray,
A dust cover that covers a sheet support surface of the feeding tray;
With
Arranged between the dust cover and the sheet support surface;
A first end is pivotally supported by the dust cover around a second pivot axis parallel to the first pivot axis, and a second end opposite to the first end is A flap member that contacts a surface of the uppermost sheet among the sheets supported by a feeding tray;
A sheet conveying apparatus. The flap member is
Consists of a plurality of flap pieces arranged adjacent to each other along the axial direction of the second rotation shaft,
The sheet conveying apparatus according to claim 1, wherein: The dust cover is
A first cover member disposed detachably with respect to the feeding tray in the vicinity of the first rotation shaft;
The first cover member is disposed at a position farther from the first rotation shaft than the first cover member, and is supported by the first cover member so as to be rotatable about a third rotation shaft parallel to the first rotation shaft. A second cover member displaceable between a first position adjacent to the feeding tray and a second position spaced apart from the feeding tray;
Have
The flap member is supported by at least one of the first cover member and the second cover member.
The sheet conveying apparatus according to claim 1, wherein the sheet conveying apparatus is characterized in that The sheet conveying device according to any one of claims 1 to 3,
An image recording unit for recording an image on the sheet conveyed by the sheet conveying device;
Comprising
An image recording apparatus.

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