JP2021031204A - Sheet carrier device - Google Patents

Abstract

To let a sheet discharge extension auxiliary tray serve to change an angle of inclination of a sheet discharge extension tray and also extend sheet discharge loading area.SOLUTION: A sheet carrier device has at a sheet discharge tray a tray abutting part which comes into contact with at least one of a sheet discharge extension tray and a sheet discharge extension auxiliary tray when the sheet discharge extension tray is rotated to spared. When the sheet discharge extension auxiliary tray is housed in the sheet discharge extension tray, the sheet discharge extension auxiliary tray comes onto contact with the tray abutting part to set the sheet discharge extension tray at a first loading angle, and when the sheet discharge extension auxiliary tray is not housed in the sheet discharge extension tray, the sheet discharge extension tray comes into contact with the tray abutting part to set the sheet discharge extension tray at a second loading angle.SELECTED DRAWING: Figure 7

Description

The present invention relates to a sheet ejecting device for ejecting a sheet to the outside of a machine, and particularly a scanner, a copying machine, a printer, and a scanner, a copying machine, a printer, which have a configuration for adjusting an inclination angle of a paper ejection extension tray to an optimum state according to the installation environment of the apparatus main body. Related to sheet transport equipment such as facsimiles.

A paper ejection tray in which the paper feed port and the ejection port open in the same direction to load a bundle of documents ejected from the ejection port, and a paper ejection extension tray that can be stored on the paper ejection tray to expand the paper ejection loading area. For example, the paper discharge loading surface of the paper discharge tray is tilted upward from the horizontal plane by 10 ° to 20 ° downstream in the transport direction, and the paper discharge extension tray loading surface is transported by 30 ° to 40 ° from the horizontal plane. There is a device that improves the paper ejection alignment by switching the angle of the paper ejection loading surface by tilting it upward on the downstream side in the direction.

When loading general originals, the originals ejected from the ejection port are ejected along the paper ejection extension tray, and after the rear end of the originals is ejected from the ejection port, the originals are ejected by their own weight. By sliding along the slope of the paper and hitting the wall surface that stands in the substantially vertical direction, the paper is loaded in a state where the disturbance in the paper ejection direction is small. However, with thin paper with weak stiffness, the tip of the document ejected from the ejection port moves along the loading surface of the output tray, but resistance increases because the tilt angle increases when the output tray switches to the output extension tray. It becomes large, and the tip cannot climb the inclination of the output paper extension tray, and the tip buckles and curls up, which may cause disturbance in loading.

In order to load thin paper with weak stiffness without buckling, it is necessary to set the inclination angle of the loading surface of the output extension tray to 10 ° to 20 °, which is substantially the same as the inclination angle of the loading surface of the output tray. However, at this angle, in the case of a general document, after the rear end of the document is ejected from the ejection port, it becomes difficult for the original to slide down to the ejection port side along the inclination of the output tray due to its own weight, and the original is loaded. Disturbance in the discharge direction may occur. Further, when the tip of the document ejected from the ejection port is ejected while sliding on the document loaded on the paper ejection tray, the loaded document may be pushed out to the downstream side in the ejection direction. Therefore, the length of the paper ejection extension tray in the ejection direction must be such that the original does not fall even if it is pushed out.

A paper ejection extension tray with the loading surface tilted upward by 10 ° to 20 ° from the horizontal plane on the downstream side in the transport direction. As a method of preventing the extruded original from dropping from the paper ejection extension tray, the tip of the original does not exceed the predetermined position. There is a method of providing a stopper on the output extension tray as described above.

Further, Patent Document 1 also discloses a method of providing a mechanism for adjusting the tilt angle of the paper ejection extension tray to adjust the paper ejection angle suitable for each document.

Japanese Unexamined Patent Publication No. 2010-265048

With the method of tilting the loading surface of the output extension tray upward 10 ° to 20 ° from the horizontal plane on the downstream side in the transport direction and attaching a stopper to the output extension tray, the sheet is longer than the original length that can be loaded on the output extension tray. Since it is necessary to arrange the stopper on the downstream side in the ejection direction, the size of the paper ejection extension tray in the document ejection direction must be increased. Therefore, the product size when the paper output extension tray is stored becomes large.

Further, in the method of Patent Document 1, the number of parts for fixing the inclination angle of the paper ejection extension tray increases, and the loading surface of the paper ejection extension tray faces upward by 10 ° to 20 ° downstream from the horizontal plane in the transport direction. When tilted to, the length of the paper ejection extension tray in the document ejection direction must be set so that the thin paper does not fall from the paper ejection extension tray in order to cope with documents that are likely to be extruded. Therefore, the product size when the paper ejection extension tray is stored becomes large.

The present invention provides a mechanism for improving both general original paper and paper ejection loadability such as thin paper without increasing the product size of the apparatus when the paper ejection extension tray is stored.

A paper feed tray on which sheets are placed, a transport means for transporting the sheets placed on the paper feed tray from the paper feed port to the discharge port, a paper discharge tray on which sheets discharged from the discharge port are loaded, and a paper output tray. A paper discharge extension tray that is rotatably provided at the downstream end of the paper discharge tray on the downstream side in the sheet discharge direction and loads sheets discharged from the discharge port in a state of being rotated and deployed on the downstream side in the discharge direction, and the discharge. In a sheet transport device equipped with a paper discharge extension auxiliary tray that can be stored in a paper extension tray.
The paper ejection tray has a tray abutting portion that contacts either the paper ejection extension tray or the paper ejection extension auxiliary tray when the paper ejection extension tray is rotated and unfolded, and the paper ejection extension auxiliary tray is provided. When the tray is stored in the paper discharge extension tray, the paper discharge extension auxiliary tray comes into contact with the tray abutting portion, the paper discharge extension tray has a first loading angle, and the paper discharge extension auxiliary tray is said. A sheet transport device characterized in that when the paper output extension tray is not stored in the paper output extension tray, the paper output extension tray comes into contact with the tray abutting portion, and the paper output extension tray has a second loading angle.

According to the present invention, the paper ejection extension auxiliary tray can have both a role of changing the inclination angle and a role of extending the paper ejection loading area. Therefore, the angle of the paper ejection extension tray is determined by the stored state of the paper ejection extension auxiliary tray. Can also be changed to an appropriate angle. In addition, the paper output extension tray can be stored in the paper output tray, and the paper output extension auxiliary tray can be stored in the paper output extension tray, so the depth size of the product when the paper output extension tray is stored does not change. , It is possible to avoid increasing the size of the device body.

FIG. 5 is a cross-sectional view of the sheet transport device according to the present invention in a state where the paper ejection extension tray is opened. The perspective view of the sheet transporting apparatus which concerns on this invention in the state which the paper discharge extension tray is opened. FIG. 5 is a cross-sectional view of the sheet transport device according to the present invention in a state where the paper ejection extension tray is housed. The perspective view of the sheet transporting apparatus which concerns on this invention in the state which stored the paper discharge extension tray. FIG. 5 is a cross-sectional view of the sheet transport device according to the present invention in a state where the paper ejection extension auxiliary tray is extended. The perspective view of the sheet transporting apparatus which concerns on this invention in the extended state of the paper discharge extension auxiliary tray. An enlarged cross-sectional view of the sheet transport device according to the present invention. Another enlarged cross-sectional view of the sheet transport device according to the present invention.

(First Embodiment)
Hereinafter, the present invention will be described in detail based on the embodiments. The technical scope of the present invention is recognized by the scope of claims, and is not limited by the following embodiments.

FIG. 1 shows a sheet feed scanner 100 including a sheet transport device including a paper ejection extension tray and a paper ejection extension auxiliary tray according to the present embodiment, in which the paper ejection extension tray is opened while the paper ejection extension auxiliary tray is stored. The cross-sectional view and FIG. 2 are perspective views of the state of FIG.

As shown in FIG. 1, the sheet feed scanner 100 that reads an image of a sheet being conveyed is composed of a paper feed tray 110 on which a sheet bundle composed of a plurality of sheets is placed and a sheet bundle placed on the paper feed tray 110. A paper feed unit 120 that feeds paper from the paper feed port while separating the sheets one by one, a plurality of transport roller pairs 130 that transport the sheets fed from the paper feed unit 120 along the transport path, and a transport path. It includes an image reading unit 140 that reads an image of a sheet being conveyed inside, a paper ejection roller pair 150 that ejects the conveyed sheet by the conveying roller pair 130, and a paper ejection tray 160 that loads the ejected sheet.

Subsequently, the image reading operation executed by the sheet feed scanner 100 shown in FIG. 1 will be described. The plurality of sheet bundles loaded on the paper feed tray 110 are separated and fed one by one by the paper feed unit 120, and the sheets are further conveyed to the image reading unit 140 by the transfer roller pair 130. The image reading unit 140 reads the image of the sheet by irradiating the sheet being conveyed with the light from the light source and receiving the reflected light from the sheet with the sensor, and outputs the data to the image processing unit (not shown) as image information. introduce. The sheet on which the image reading unit 140 should read an image may be any sheet such as a recording paper such as OA paper, a receipt, or a check. After the image is read by the image reading unit 140, the sheet is conveyed by the transport roller pair 130 and discharged to the paper output tray 160 by the paper discharge roller pair 150.

Next, the configuration and operation of the output tray, the output extension tray, and the output extension auxiliary tray according to the present invention will be described.

The paper ejection tray 160 includes a paper ejection extension tray 170 that can be stored in the paper ejection tray 160 and is rotatably provided at the downstream end of the paper ejection tray 160 in the transport direction (sheet ejection direction), and a paper ejection extension tray. It is equipped with a paper ejection extension auxiliary tray 180 that can be stored in 170 and can be slid and moved in the transport direction. Further, on the upper surface of the paper ejection tray 160, a tray abutting portion 161 that comes into contact with either the paper ejection extension tray 170 or the paper ejection extension auxiliary tray 180 is provided on the downstream side in the transport direction from the rotation hinge of the paper ejection extension tray 170. It is provided. Further, as shown in FIG. 2, the upper surface of the paper ejection tray 160 is provided with a recess having a shape corresponding to the paper ejection extension tray 170 for accommodating the paper ejection extension tray 170.

FIG. 3 is a cross-sectional view showing a state in which the paper ejection extension tray 170 is stored, and FIG. 4 is a perspective view of the state of FIG. The loading surface 162 of the output tray 160 is an inclined surface having a predetermined angle, and the downstream side in the transport direction faces upward. In this embodiment, the loading surface 162 of the output tray 160 is tilted by 10 ° to 20 °. As a result, the ejected small-sized sheet bundles are aligned with the rear end of the ejected document abutting against the wall surface 163 that stands substantially vertically on the output roller vs. 150 side of the output tray 160. It is loaded on the loading surface 162 as described above. The length of the inclined surface 162 in the discharge direction is set to a length that allows a sheet such as a business card size or a postcard to be loaded. As a result, a small-sized sheet can be loaded on the loading surface 162 without deploying the paper ejection extension tray 170 to the deployment position.

Next, FIG. 5 is a cross-sectional view showing a state in which the paper output extension tray 170 is opened with the paper output extension auxiliary tray 180 expanded, FIG. 6 is a perspective view of the state of FIG. 1, and FIG. 7 is A of FIG. It is an enlarged view of a part.

When the paper output extension tray 170 is opened with the paper output extension auxiliary tray 180 stored in the paper output extension tray 170, as shown in FIG. 7A, the paper output extension auxiliary tray abutting surface of the tray abutting portion 161 is opened. The paper output extension auxiliary tray 180 hits 161a, and the paper output extension tray 170 is restricted from being opened any further. At this time, the tilt angle (loading angle) of the loading surface 171 of the paper ejection extension tray 170 with respect to the horizontal plane is in a state of being tilted upward by 30 ° to 40 ° on the downstream side in the transport direction.

Further, the length of the loading surface 171 in the sheet discharging direction when the paper ejection extension tray 170 is opened is substantially equal to the length at which the A4 size sheet does not hang down on the downstream side in the transport direction. When general papers are loaded with the paper ejection extension tray 170 open while the paper ejection extension auxiliary tray 180 is stored, the originals ejected from the paper ejection roller pair 150 are ejected to the paper ejection tray 160 and paper ejection. It is ejected along the extension tray 170, and after the rear end of the original is ejected from the output roller pair 150, it slides down to the ejection port side along the inclination of the output tray 160 by its own weight, and is a wall surface standing vertically. When the rear edge of the document abuts on 163, the document is aligned with the rear edge of the document. As a result, the documents are loaded with less disturbance in the document ejection direction.

Subsequently, FIG. 7B is an enlarged view of a portion B in FIG. When the paper ejection extension tray 170 is opened with the paper ejection extension auxiliary tray 180 moved downstream in the sheet ejection direction, as shown in FIG. 8, the paper ejection extension tray abutting surface 161b of the tray abutting portion 161 and the paper ejection extension tray 161b are ejected. The paper extension tray 170 hits the paper extension tray 170, and the paper output extension tray 170 cannot be opened any further. At this time, the tilt angle (loading angle) of the loading surface 171 of the paper ejection extension tray 170 with respect to the horizontal plane is in a state of being tilted upward by 10 ° to 20 ° on the downstream side in the transport direction. Further, the length of the paper ejection loading surface in the ejection direction when the paper ejection extension tray 170 is opened and the paper ejection extension auxiliary tray 180 is stretched is substantially equal to the length at which the legal size document does not hang down on the downstream side in the transport direction. ..

When thin paper with weak stiffness is loaded in this state, the originals ejected from the output roller pair 150 are ejected along the output tray 160 and the output extension tray 170 without the tip buckling. The originals loaded on the output tray 160 may be pushed out by the ejected originals, but the originals are pulled out from the output extension tray 180 so that the originals can be ejected to the output extension tray 170 and the output extension tray 180. Can be prevented from falling from.

Although the paper ejection extension auxiliary tray abutting surface 161a and the paper ejection extension tray abutting surface 161b are configured as separate members, the present invention is not limited to this, and the same member may be used.

(Second Embodiment)
Hereinafter, the sheet feed scanner according to the second embodiment of the present invention will be described. Since the basic configuration of the sheet feed scanner according to the present embodiment is the same as that of the first embodiment, the description thereof will be omitted, and only the differences will be described.

FIG. 8 is an enlarged view of a cross-sectional view showing a state in which the paper ejection extension tray 170 is opened. The angle adjusting member 190 of the paper output extension tray 170 is rotatably attached to the paper output tray 160. In the state of being stored in the paper ejection tray 160 shown in FIG. 8A, the angle of the paper ejection extension tray 170 is restricted by the paper ejection extension auxiliary tray 180 coming into contact with the paper ejection extension auxiliary tray abutting surface 161a. There is. From this state, as shown in FIG. 8B, the angle adjusting member 190 can be opened (unfolded from the output tray 160). When the angle adjusting member 190 is opened, the angle adjusting member 190 abuts and supports the paper ejection extension auxiliary tray 180, and the loading angles of the paper ejection extension tray 170 and the paper ejection extension auxiliary tray 180 can be changed. It becomes. At this time, the paper ejection extension tray 170 may be rotated to the same position as in FIG. 8A, and the loading angle of only the paper ejection extension auxiliary tray 180 may be changed.

The angle adjusting member 190 may come into contact with the paper ejection extension tray 170 to adjust the angle of the paper ejection extension tray 170. In this way, by configuring the angle adjusting member 190 to come into contact with the paper ejection extension tray 170 or the paper ejection extension auxiliary tray 180, the paper ejection extension auxiliary tray 180 is also stored without opening the angle adjusting member 190. The angle of the paper ejection extension tray 170 can be adjusted in three states: a state in which the paper ejection extension auxiliary tray 180 is opened without opening the angle adjusting member 190, and a state in which the angle adjusting member 190 is opened.

As described in detail above, according to the present embodiment, by moving the paper ejection extension auxiliary tray 180, it has a role of changing the inclination angle of the paper ejection extension tray 170 with respect to the horizontal plane and a role of extending the sheet loading area. Therefore, a special part for changing and holding the angle of the paper ejection extension tray 170 is not required. Further, since the paper ejection extension tray 170 can be stored in the paper ejection tray 160 and the paper ejection extension auxiliary tray 180 can be stored in the paper ejection extension tray 170, the paper ejection extension tray 170 can be stored in the paper ejection tray 160. The depth size of the product does not change when it is used, and the device body does not become large.

The paper ejection extension tray 170 and the paper ejection extension auxiliary tray 180 according to each of the above embodiments are provided in an image reading device such as a scanner, but are provided in an image forming device such as a copier, a printer, or a facsimile. You may be.

100 Sheet feed scanner 110 Paper feed tray 120 Paper feed unit 130 Transport roller pair 140 Image reader unit 150 Paper discharge roller pair 160 Paper discharge tray 161 Tray abutting part 161a Paper ejection extension auxiliary tray abutting surface 162b Paper ejection extension tray abutting Surface 162 Paper ejection tray Loading surface 163 Wall surface 170 Paper ejection extension tray 171 Paper ejection extension tray Loading surface 180 Paper ejection extension auxiliary tray 190 Paper ejection extension tray Angle adjustment member

Claims (4)

A paper tray on which sheets are placed and
A transport means for transporting the sheet placed on the paper feed tray from the paper feed port to the discharge port, and
A paper discharge tray for loading sheets discharged from the discharge port and
A paper ejection extension tray that is rotatably provided at the downstream end of the paper ejection tray in the sheet ejection direction and that loads sheets ejected from the ejection port in a state of being rotated and unfolded in the downstream direction of the ejection direction.
In a sheet transport device provided with a paper discharge extension auxiliary tray that can be stored in the paper discharge extension tray.
The output tray has a tray abutting portion that contacts either the output extension tray or the output extension auxiliary tray when the paper output extension tray is rotated and unfolded.
When the paper discharge extension auxiliary tray is stored in the paper discharge extension tray, the paper discharge extension auxiliary tray comes into contact with the tray abutting portion, and the paper discharge extension tray becomes the first loading angle, and the discharge When the paper extension auxiliary tray is not stored in the paper output extension tray, the paper output extension tray comes into contact with the tray abutting portion, and the paper output extension tray has a second loading angle. Sheet transfer device. The sheet transport device according to claim 1, wherein the second angle is substantially the same as the loading surface of the paper ejection extension tray. The sheet transport device according to claim 1 or 2, wherein the paper discharge tray includes an angle adjusting member that changes the loading angle of the paper discharge extension tray in the unfolded state. The angle adjusting member is
By supporting the output extension tray or the output extension auxiliary tray in a state of being unfolded from the output tray, the loading angle of the output extension tray can be changed.
When the paper ejection extension auxiliary tray is stored in the paper ejection extension tray, it comes into contact with the paper ejection extension auxiliary tray, and when the paper ejection extension auxiliary tray is unfolded from the paper ejection extension tray. The sheet transport device according to claim 3, wherein the sheet transport device comes into contact with the paper ejection extension tray.

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