JP2003182903A - Sheet ejecting device, and image reader having the sheet ejecting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a side end part such as a curled portion of a sheet from being brought close to a ejecting port, and to prevent any defective ejection of the sheet by changing the position of an urging means to urge the side end part of the sheet installed in the vicinity of the ejecting port of the sheet according to each size of the side end part of the sheet. <P>SOLUTION: In the sheet ejecting device comprising an accommodation tray to accommodate the sheet, a feeding means to feed the sheet from the accommodation tray, a carrying guide to guide the sheet to be fed, an ejecting means to successively eject the sheets, an ejecting tray to load the ejected sheet, and the urging means to urge the ejected sheet to the ejecting tray side, the carrying guide is movable, and the urging means is movable in an interlocking manner with the motion of the carrying guide. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet material discharging device for discharging a sheet material, and an image reading apparatus provided with the sheet material discharging device, and more specifically, to an image reading apparatus such as a facsimile. A sheet material discharging device and a sheet material discharging device capable of improving the stackability of documents on the discharge tray or preventing the discharge failure of the documents from the discharging portion when the documents are accumulated on the discharging tray. The present invention relates to an image reading device including a device.

[0002]

2. Description of the Related Art Conventionally, a facsimile, an image scanner, etc. have been known as an image reading apparatus for electronically reading image information of an original, and among these apparatuses, an apparatus for conveying an original and reading an image is known. A sheet material discharging device for discharging the document after reading the image information is provided.

An example of a conventional device will be described with reference to FIGS. 3, 4 and 5. Incidentally, FIG. 3 is a schematic sectional view of the configuration of an image reading apparatus including a sheet material discharging device in a conventional example. Further, FIG. 4 is a schematic perspective view of a sheet material whose side ends are curled, and FIG. 5 is a schematic configuration explanatory view of the vicinity of the sheet material discharging device of the image reading apparatus.

The image reading device 8 is an image sensor 4 capable of electronically reading the image information of the sheet material P.
And the sheet material P stored on the storage tray 1
Is conveyed to the image sensor 4 side (left direction in the drawing) by the feeding means 3, and an image can be read in the process of passing through the image sensor 4.

Further, a sheet material discharging device is arranged on the downstream side of the image sensor 4. This sheet material discharging device has a discharging roller pair 5 as a discharging means of the sheet material P, and the sheet material P conveyed to the downstream side after reading the image is sequentially discharged by the rotation of the discharging roller pair 5. To be done. Then, the discharged sheet materials P are configured to be stacked on the discharge tray 6.

Here, in the image reading device 8,
For operator convenience, creases or curled sheet material may be used. When the curled sheet material P has a shape in which the side end portion of the sheet material is raised upward as shown in FIG. 4, as shown in the upper diagram of FIG.
When the stacking amount of the sheet material on the discharge tray 6 becomes high, the curled portion of the sheet material may block the sheet material discharge port 7 (the sheet material outlet of the discharge roller pair).

As described above, when the curled portion of the sheet material P blocks the sheet material discharge port 7, the leading end portion of the sheet material P, which is sequentially discharged later, comes into contact with the curled portion,
In some cases, a defective discharge such as the curled sheet material P being pushed out from the discharge tray 6 or being rolled was caused.

Further, there is a possibility that a sheet material to be discharged next may slip under the curled sheet material P and the stacking order of the sheet material P may be changed.

[0009]

In order to solve these problems, in the conventional sheet material discharging apparatus, a sheet material full load detecting means is disposed in the vicinity thereof, and the sheet material discharging port 7 is provided from above the discharging tray 6. By detecting the stacking amount of the sheet material up to, there is a configuration that prevents defective discharge of the sheet material. However, the sheet material full load detection means requires a sensor and a detection member, which causes an increase in the number of parts.

Therefore, in an inexpensive image reading apparatus or the like, a side end portion such as a curl portion of the sheet material approaches the sheet material discharge port 7 near the sheet material discharge port 7 as shown in the lower diagram of FIG. In order to prevent the sheet material, the sheet material urging member 9 that urges the sheet material to the discharge tray 6 side may be arranged in accordance with the side end position of the sheet material.

As described above, as shown in the upper diagram of FIG. 5, the sheet material P is discharged onto the discharge tray 6 by the discharge roller pair 5.
Is urged toward the discharge tray 6 (lower side in the drawing) by the swayable sheet material urging member 9.

When the sheet material P is completely discharged, the sheet material urging member 9 returns from the position indicated by the broken line in the figure to the initial position as shown in the lower diagram of FIG. At this time, when the side end portion of the sheet material P or the like is curled, the sheet material urging member 9 urges the curled portion toward the discharge tray 6 so that the above-described curled portion of the sheet material P is urged. Was configured so as not to approach the sheet material discharge port.

On the other hand, whether or not the original is liable to be curled depends on various conditions such as the type of sheet material.
The sheet material in which curling is likely to occur is limited to a sheet material having a substantially specific size, and it is empirically possible to specify such a sheet material in terms of size.

However, the size of the original used by the operator of the image reading apparatus may be different from that of the image forming apparatus such as a printer, and may be read with an original size other than the regulation such as an arbitrarily cut original. It is impossible to empirically identify the occurrence of.

Therefore, according to the above-mentioned problem, the position of the urging member for urging the side end portion of the sheet material to the discharge tray side is changed according to each size of the sheet material side end portion for reading an image, It is desirable to keep the force of the sheet material away from the outlet.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to feed a sheet material to an image sensor of an image reading apparatus and read an image from the side edge of the sheet material. While the operator adjusts the guide means that guides the part, in conjunction with the adjustment operation,
By moving the position of the biasing member that biases the side edge of the sheet material toward the discharge tray to the position corresponding to each size of the side edge of the discharged sheet material, any sheet other than the specified A sheet material discharging device capable of preventing a defective discharging of the sheet material such that the curled portion of the sheet material can be surely prevented from approaching the discharging slot even with the material width size, and the sheet material discharging device. An object is to provide an image reading device equipped with the device.

[0017]

A typical configuration according to the present invention for achieving the above object is a sheet material storing means for storing a sheet material, and a feeding means for feeding the sheet material from the sheet storing means. Conveying guide means for guiding the side end portion of the sheet material to be fed, sheet material discharging means for sequentially discharging the sheet material, sheet material stacking means for stacking the sheet material discharged by the sheet material discharging means, In the sheet material discharging device including a biasing means for biasing the sheet material discharged from the sheet material discharging means toward the sheet material stacking means, the conveyance guide means is movable, and the biasing means is It is characterized in that it moves in conjunction with the movement of the conveyance guide member.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION (First Embodiment) A first embodiment of the present invention will be described with reference to FIGS. Note that FIG. 1 is a schematic configuration explanatory diagram of an image reading apparatus including the sheet material discharging device according to the first embodiment.

FIG. 2 is a schematic explanatory view of the operation of the sheet member urging member in this embodiment. The same elements as those in the above-described conventional example are designated by the same reference numerals. The image reading apparatus according to the present embodiment is a sheet-through type image scanner that electronically reads an image of a sheet material while conveying the sheet material on which image information is drawn.

First, as shown in FIG. 1, this image scanner is equipped with a storage tray 1 for storing a sheet material P for reading an image. In order to read an image, when the operator of the image reading device 8 first stores the sheet material P in the storage tray 1, the feeding guide pair 2 is attached to the sheet material P in order to stabilize the transportability of the sheet material P. Align with the width of both ends of.

Next, the sheet material P stored in the storage tray 1 is fed from the storage tray 1 toward the image sensor 4 by the feeding means 3. When a plurality of sheet materials P are stored in the storage tray 1, the sheet feeding means 3 separates and feeds the sheets one by one.

Then, when the fed sheet material P passes through the image sensor 4 which is an image reading means, the image information of the sheet material P is electronically read. After that, the sheet material P that has passed through the image sensor 4 is conveyed to the discharge roller pair 5, which is a sheet material discharge device on the downstream side.

The sheet material P discharged by the discharge roller pair 5 is stacked on the discharge tray 6. In the image reading device 8 according to the present embodiment, the sheet material P is fed based on the widthwise central portion of the sheet material P.

A sheet material urging member 9 is disposed in the vicinity of the sheet material discharge port of the discharge roller pair 5 (in the upward direction of the discharge tray 6). The sheet member urging member 9 is attached to the feeding guide pair 2 and is provided with a rotation support shaft 9a so that it can be moved.

When the stacking of the sheet material on the discharge tray 6 becomes high, the sheet material having a curl at the side edge easily closes the sheet material discharge port, so that the sheet material urging member 9 discharges the sheet material. The sheet material P discharged from the roller pair 5 is urged toward the discharge tray side 6 so that the curled sheet material side end portion does not approach the sheet material discharge port.

The operation of the sheet member urging member 9 according to the present invention will be described with reference to FIG. As shown in the upper diagram of FIG. 2, when the operator of the image reading device 8 stores the sheet material P of S1 width size in the storage tray 1, the feeding guide pair 2 is aligned with the position of S1 ′ and the sheet material P is moved. Guide the feeding of P.

At this time, as shown in the lower diagram of FIG. 2, the sheet material urging member 9 is also in the position S1 ', and the side end portion of the sheet material is in the urging position. The sheet material urging member 9 in the present embodiment is composed of a plurality of members so as to urge both side end portions of the sheet material, and urges the sheet material P by its own weight toward the discharge tray 6 side. is there.

Here, the operator of the image reading device 8
S2 in which the size of the sheet material P in the storage tray 1 in the width direction is different
When a width-size sheet material (indicated by a broken line in the figure) is stored and an image is to be read, first, as shown in the upper diagram of FIG. 2, the feeding guide pair 2 is adjusted to the S2 width size and the position of S2 ′ (see the figure). Adjust the movement to the position indicated by the middle broken line).

Then, as shown in the lower diagram of FIG. 2, the sheet member urging member 9 interlocks with the movement of the feeding guide pair 2 and is located at a position S2 '(the broken line in the figure) which is equal to the moving amount of the feeding guide pair 2. Position). At this time, the sheet member urging member 9 is S
Even if the sheet material has a 2'width size, both end portions of the sheet material are in positions where they can be biased.

As a result, even if the sheet material urging member 9 has an arbitrary sheet material size other than the regulation, the sheet material urging member 9 is moved to a position corresponding to both side end portions of the sheet material by interlocking with the operation of adjusting the guide width of the feeding guide. It is possible to move, and it is possible to surely bias the side end portion of the sheet material.

[0031]

As is apparent from the above description, when the sheet material is fed to the image sensor of the image reading device and the image is read, the operator adjusts the guide means for guiding the side end portion of the sheet material. On the other hand, the position of the urging member that urges the sheet material to the discharge tray side should move to the position corresponding to each size of the side edge of the discharged sheet material in conjunction with the adjustment operation. Thus, it is possible to reliably prevent the side end portion such as the curled portion of the sheet material from coming close to the sheet material discharge port even if the sheet material width size other than the regulation is set. As a result, the curled portion of the sheet material blocks the discharge port of the sheet material discharging device, and the leading end portion of the sheet material that is sequentially discharged later comes into contact with the curled portion,
The curled sheet material is pushed out of the output tray or rolled, and the sheet material that will be ejected next goes under the curled sheet material, and the sheet material is loaded. It is possible to prevent defective discharge of the sheet material such that the order is changed.

[Brief description of drawings]

FIG. 1 is a schematic configuration explanatory diagram of an image reading apparatus including a sheet material discharging device according to a first embodiment of the present invention.

FIG. 2 is a schematic operation explanatory view of the sheet member urging member according to the first embodiment of the present invention.

FIG. 3 is a schematic configuration explanatory view of an image reading apparatus including a sheet material discharging device in a conventional example.

FIG. 4 is a schematic perspective view of a sheet material with curled side edges.

FIG. 5 is a schematic configuration explanatory view in the vicinity of a sheet material discharging device of an image reading device in a conventional example.

[Explanation of symbols]

1 Storage tray 2 pairs of feeding guides 3 feeding means 4 image sensor 5 Ejection roller pair (sheet material ejection device) 6 discharge tray 7 Sheet material outlet 8 Image reading device 9 Sheet material urging member 9a Rotating spindle P sheet material S1 S1 width size S1 'Position for S1 width size sheet material S2 S2 width size S2 'Position for S2 width size sheet material

Claims (3)

[Claims] 1. A sheet material storing means for storing a sheet material, a feeding means for feeding the sheet material from the sheet storing means, a conveying guide means for guiding a side end portion of the sheet material to be fed, and a sheet material. Sheet material discharging means for sequentially discharging, sheet material stacking means for stacking the sheet material discharged by the sheet material discharging means, and sheet material discharged from the sheet material discharging means is urged to the sheet material stacking means side. In the sheet material discharging device provided with a biasing means for moving the transport guide member, the biasing means is movable in conjunction with the movement of the transport guide means.
Sheet material discharging device and image reading device. 2. The sheet material discharging device according to claim 1, wherein the urging means urges one side end portion or both end portions of the sheet material discharged from the sheet material discharging means. And an image reading device. 3. The moving amount by which the urging unit moves in conjunction with the transport guide unit is the same as the transport guide unit.
The sheet material discharging device and the image reading device according to any one of claims.