JP2003312927A - Automatic document feeding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic document feeding device for easily pulling out documents delivered to a delivery tray. <P>SOLUTION: This automatic document feeding device 200 comprises a document setting part A accommodating a plurality of documents; a carrying means for carrying the documents accommodated in the document setting part A to a predetermined image reading position; and the delivery tray 29 arranged below the document setting part A, to which the documents after image reading are delivered. A movable tray 401 interlocking with the document setting part A is installed to the delivery tray 29, and the movable tray 401 is installed in a manner to push the documents delivered according to an opening action of the document setting part A by a prefixed distance. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic document feeder in an image forming apparatus such as a copying machine or a facsimile.

[0002]

2. Description of the Related Art Conventionally, an automatic document feeder is used in an image forming apparatus such as a copying machine or a facsimile in order to move a document to a reading section or a discharging section. In this automatic document feeder, in the see-through type automatic document feeder in which the reading unit is fixed and the reading operation is performed at the same time as the document is transported, the document is discharged just below the document table on which the document is set. Since the trays are arranged, it was difficult to take out the documents discharged to the paper discharge tray.

In order to solve the above problems, for example, Japanese Patent Laid-Open No. Hei 7
In Japanese Patent Publication No. 271112, a document table is provided with a fixed portion,
There is one in which the fixed part is divided into a movable part that can be housed so that the movable part is housed in the fixed part so that a document can be taken out after the job is completed. In addition, JP-A-200
In Japanese Patent Laid-Open No. 0-1250, a notch is provided in the document table so that a finger can be inserted. Furthermore, JP 2001-13
In Japanese Patent No. 9162, a moving means that can move back and forth is provided in a paper discharge tray so that the original can be pulled out to the front side when the original is small.

[0004]

However, JP-A-7-2
In Japanese Patent No. 71112 or Japanese Patent Laid-Open No. 2000-1250, it is effective for a large-sized document discharged to the discharge tray, but for small documents stacked on the back side of the discharge tray. However, there was a problem that visibility was poor and it was difficult to take out.

Further, in Japanese Unexamined Patent Publication No. 2001-139162, when large and small originals of different sizes are mixed in the paper ejection tray, if the moving means of the paper ejection tray is pulled out in accordance with the small-sized original, a large size is generated. There was a possibility that a document of the size may drop from the output tray. Further, when the original is a thin paper, the original may stick to the discharge tray due to static electricity generated between the original and the discharge tray, and the original may be separated when the moving means is pulled out.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an automatic document feeder which can easily take out a document discharged to a discharge tray.

[0007]

According to a first aspect of the present invention, there is provided a document storing means for storing a plurality of documents, and a conveying means for conveying the document stored in the document storing means to a predetermined image reading position. In an automatic document feeder provided below the document storing means and provided with a document discharging section for discharging the document after image reading, the document storing means includes a closed position for placing the document and a document discharging unit. It is possible to move from the closed position to the open position opened by a predetermined angle so as to widen the space between the document and the document, and the document discharge unit is provided with a document moving unit that operates in conjunction with the document storing unit. According to the opening operation of the document storage means, the discharged document is pushed out in the sheet discharge direction by a predetermined distance.

According to the first aspect of the invention, the original separated from the plurality of original bundles stored in the original storing means is
The image is formed by being conveyed to the image reading position by the conveying unit. The document on which the image formation has been completed is conveyed to the document discharge unit arranged below the document storage unit and discharged.

The document discharged to the document discharge section can usually be held as it is, but if the document is small,
Poor visibility and difficult to take out. According to the present invention, the document moving unit moves in association with the opening operation of the document storing unit, so that even when a small document is stacked inside the document discharge unit, the document is pushed out to the take-out side. Therefore, the visibility is improved and the original can be easily taken out.

According to a second aspect of the present invention, in the automatic document feeder according to the first aspect, the document moving means interlocks with the closing operation of the document storing means after the document is taken out from the paper discharge section. Characterized by returning to the original position.

The invention described in claim 2 has the same effect as the invention described in claim 1, and since the closing operation of the document storing means can be manually operated, in the case of a large document. The document moving means can be returned to the original position. Therefore, there is no problem that the user cannot move to the next job without taking out the discharged original, and the user can freely take out the discharged original when he wants to take it out.

The invention according to claim 3 is the invention according to claim 1 or 2.
The automatic document feeder described in (1) is characterized in that it is provided with positioning means for holding the opening angle of the document storing means, and the amount of movement of the document moving means can be changed according to the opening angle.

The invention described in claim 3 is the invention according to claim 1 or 2.
In addition to the same effect as the invention described in (1), the opening angle of the document storing means can be arbitrarily selected. Therefore, the position of the document moving means can be changed by setting the opening angle according to the size of the document. Is high.

The invention according to a fourth aspect is the first to the third aspects.
In the automatic document feeder according to any one of the above, the document moving means has a notch portion for pinching the upper and lower surfaces of the discharged document with fingers.

The invention according to a fifth aspect is the first to the fourth aspects.
In the automatic document feeder according to any one of the items 1 to 3, the document discharge unit main body is provided with recesses for sandwiching the upper and lower surfaces of the discharged document with fingers.

In the invention described in claim 4 or 5,
The same effect as the invention according to any one of claims 1 to 4 is obtained, and the original can be easily taken out by pinching the upper and lower surfaces of the original with the fingers from the notch or the recess.

The invention according to claim 6 is the invention according to claims 1 to 4.
In the automatic document feeder according to any one of items 1 to 5, when the document moving means moves on the paper ejection tray surface in the paper ejection direction on the paper ejection tray surface, the paper is placed between the paper feeding tray surface and the document moving means. It is characterized in that guide means is provided for guiding so as to form a gap.

According to the invention of claim 6, claim 1
In addition to the same operational effect as the invention described in any one of 5 to 5, when the document moving means moves on the discharge tray surface in the discharge direction, a gap is formed between the paper tray surface and the document moving means. Since the formed document is formed, the discharged document can be easily taken out by pinching the upper and lower surfaces of the document with fingers from this gap.

[0019]

DETAILED DESCRIPTION OF THE INVENTION Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a sectional view schematically showing the operation of the automatic document feeder of the present invention, FIG. 2 is a control block diagram of FIG. 8, FIG. 3 is a diagram showing a carrying state, and FIG. 4 is a second embodiment. FIG. 5 is a perspective view showing the third embodiment, and FIG. 6 is a fourth perspective view.
FIG. 7 is a perspective view showing an embodiment, FIG. 7 is a sectional view showing a fourth embodiment, and FIG. 8 is a sectional view schematically showing the entire automatic document feeder of the present invention.

The automatic document feeder 200 includes a document setting unit A for setting a document stack P, a separation / feeding unit B for separating and feeding each document from the set document stack P, and a paper feeding unit. A resist section C for abutting and aligning the aligned originals and pulling out and transporting the aligned originals; a turn section D for turning the transported originals and transporting the original surface toward the reading side (downward); A reading / conveying unit E for causing a document reading device (not shown) located below the reading glass to read the front surface image of the document, and a first switchback unit F for inverting the front and back of the document after reading. The intermediate conveyance unit G for returning the document switched back by the first switchback unit F to the registration unit C again, the reading conveyance unit E from the turn unit D again for reading the back side of the document, and then temporarily waiting the document. Two An switchback H, a reverse sheet ejection tray I for ejecting documents from the second switchback H, a stack unit J for stacking and holding documents after reading is completed, and drive units 101-107 for driving these conveying operations. , And a controller 100 that controls a series of operations.

The document setting section A is provided with a document table 2 for setting a document stack P and a movable document table 3. The width direction of the set document stack P is regulated by side guides from both sides. The document set is detected by the document set filler 4 and the document set sensor 5, and the detection signal is transmitted to the control unit. On the table surface of the document table 2, document length detection sensors 30 and 31 for detecting the length of the document in the conveying direction are provided.

In this embodiment, reflection type sensors are used as the document length detecting sensors 30 and 31, but
The present invention is not limited to this, and for example, an actuator type sensor capable of detecting even one original may be used. Further, it is desirable that the document length detecting sensors 30 and 31 are arranged so that it can be determined at least whether the document size is the same or the same size.

The movable original table 3 is vertically movable in the ab direction shown in the drawing by a bottom plate lifting motor 105 (not shown). When the document set filler 4 and the document set sensor 5 detect that the document has been set, the bottom plate lifting motor 105 is driven, the movable document table 3 moves upward about the fulcrum, and the uppermost surface of the document stack P moves. It comes into contact with the pickup roller 7.

The pickup roller 7 is moved in the cd direction shown in the figure by a pickup motor 101 (not shown), and is moved along with the vertical movement of the movable document table 3. A lift detection sensor 8 capable of detecting the vertical position of the movable document table 3 is provided near the pickup roller 7.

When the print key is pressed, a document feed signal is transmitted to the ADF controller 100, and the pickup roller 7 picks up the document on the document table 2 by the rotation of the rollers due to the forward rotation of the feed motor 102. .

The paper feed belt 9 is driven to rotate in the direction opposite to the paper feed direction by the forward rotation of the paper feed motor 102, and separates the uppermost original from the originals P and separates the other originals from the uppermost. Only the original documents are fed. The reverse roller 10 is in contact with the sheet feeding belt 9 with a predetermined pressure. When in direct contact with the paper feed belt 9 or in contact with one original sheet, the reverse roller 10 rotates in a clockwise direction as the paper feed belt 9 rotates.
It works to push back excess documents, preventing double feed.

The original is separated by the reverse roller 10 and further conveyed by the paper feed belt 9, passes through the abutting sensor 11, and is conveyed to the pull-out roller 12. The leading edge of the document is detected by the detection of the abutting sensor 11, and the original is conveyed by a predetermined distance from the abutting sensor 11. Then, with the leading edge of the document pressed against the pull-out roller 12 with a predetermined amount of bending, the paper feed motor 10
2 is stopped, and the driving of the paper feeding belt 9 is stopped. The leading edge of the document enters the nip portion of the pull-out roller 12, and the leading edge is aligned (skew correction).

The pull-out roller 12 has the skew correction function as described above, and conveys the document to the turn roller 14 after separation, and the paper feed motor 1
It is driven by the reverse rotation of 02. At this time, the pull-out roller 12 and the turn roller 14 are driven, but the pickup roller 7 and the paper feeding belt 9 are stopped.

Pull-out roller 12 and turn roller 14
A document width sensor 13 is provided between and to detect the size of the document in the width direction orthogonal to the conveying direction. By driving the pull-out roller 12 and the turn roller 14,
When a document is conveyed from the registration section C to the turn section D, the conveyance speed of the document in the registration section C is set to be higher than the conveyance speed in the reading conveyance section E, so that the processing time can be shortened. ing. When the leading edge of the document is detected by the reading entrance sensor 15, deceleration is started in order to make the document transportation speed the same as the reading transportation speed, and at the same time, the reading motor 103.
Is driven to drive the reading entrance roller 16, the reading roller 19, and the reading exit roller 21.

In the case of one-sided original reading, the lower reversing switching claw 23 and the double-sided switching claw 41 are at the positions shown by the solid line in the figure,
The document that has passed through the reading / conveying section E is conveyed to the paper discharge tray J. At this time, when the leading edge of the document is detected by the paper ejection sensor 22, the paper ejection motor 104 is driven in the normal direction to rotate the paper ejection roller 28 counterclockwise. In addition, the discharge sensor 2
2 detects the trailing edge of the original and decelerates the paper ejection motor 104 immediately before the original exits from the nip portion of the paper ejection roller 28 to prevent the original from suddenly popping out onto the paper ejection tray 29. .

Next, the first-out operation of the next original in the case of single-sided original reading will be described. When the front end of the document is detected by the abutment sensor 11, the paper feed motor 102 is temporarily stopped at the timing when the rear end of the document passes through the pull-out roller 12, and then the paper feed motor 102 is driven again in the normal direction. By this operation, the feeding operation of the next original is started (FIGS. 3A and 3A).

At this time, the drive of the turn roller 14 is stopped, but since the one-way clutch is built in the timing pulley, the turn roller 14 rotates together. The next original that has been fed stands by in contact with the pull-out roller 12. When the preceding document reaches a predetermined position (in the present embodiment, the rear end of the document has passed through the reading entrance sensor 15 and is near the reading entrance roller 16), the paper feed motor 102 is driven in the reverse direction, The next original is conveyed from the pull-out roller 12.

Next, the case of double-sided document reading will be described. Up to the reading of the first side (front side) of the document, it is the same as in the case of single-sided document reading. Regarding the first-out operation, first
This is not performed during the surface reading operation, and the next original is on the original table 2. When the leading edge of the document passes the registration sensor 17,
The double-sided switching claw 41 moves in the i → j direction when the double-sided switching claw SOL112 (not shown) is turned on. The first surface of the original is read by the reading unit 201 of the reading / conveying unit E,
From the lower reversal switching claw 23 to the paper discharge roller 28, the double-sided switching claw 41
Of the first switchback reversal unit F (FIG. 3C).

At the timing when the leading edge of the document passes the paper discharge sensor 22, the paper discharge motor 104 is driven to rotate normally, the paper discharge roller 28 is rotated counterclockwise, and at the same time, the upper reversing motor 107 is driven to rotate normally. The upper reversing motor 31 also rotates counterclockwise. When the trailing edge of the document is detected by the paper ejection sensor 22, the paper ejection motor 104 and the upper reversing motor 107 become faster than the reading and conveying speed, and the reading motor 103 stops.

Further, after the trailing edge of the original is detected by the paper ejection sensor 22, the double-sided switching pawl SOL112 is turned off at the timing when the trailing edge of the original passes through the paper ejection roller 28.
The double-sided switching claw 41 returns in the j → i direction. Next, when the upper reversing sensor 32 detects the trailing edge of the original, the upper reversing motor 107 is changed from the normal rotation driving to the reverse rotation driving, whereby the rotation of the upper reversing roller 31 is changed from the counterclockwise direction to the clockwise direction.
This starts the switchback operation (see FIG. 3).
(D)).

In the switchback operation, the paper feed motor 10
By driving 2 in reverse, the relay roller 33, the pull-out roller 12, and the turn roller 14 are rotated in the feeding direction. The document is fed again to the registration section C and the turn section D via the intermediate conveyance section G, and when the reading entrance sensor 15 detects the leading edge of the original, the leading edge of the original is pressed against the reading entrance roller 16 with a predetermined amount of bending. In this state, the paper feed motor 102 is stopped, and the tip alignment (skew correction) is performed (FIG. 3 (e)).

Then, the paper feed motor 102 is driven to rotate in the reverse direction and the reading motor 103 is driven to rotate in the normal direction, so that the document is sent to the reading / conveying section E. When the registration sensor 17 detects the leading edge of the original, the lower reversal switching claw 23 moves in the direction f → e in the figure by turning on the lower reversal switching claw SOL110. Next, when the reading unit 201 starts reading the second surface of the document and the paper discharge sensor 22 detects the leading edge of the document, the lower reversing motor 106 is driven to rotate normally, and the lower reversing roller 25 rotates counterclockwise. . The original is the reverse flip claw 2
It passes through the lower part of 3 and is guided to the second switchback section H (Fig. 3 (K)).

Next, the first-out operation for double-sided document reading will be described. The document whose reading on the first side is completed is conveyed from the switchback section F to the intermediate conveyance section G, and the upper reversal sensor 3
When the trailing edge of the original is detected by 2, the pulse count of the paper feed motor 102 causes the trailing edge of the original to be pulled out by the pull-out roller 1.
The rotation of the paper feed motor 102 is switched at the timing of exiting 2, and the feeding of the next original is started.

From this point onward, the operation is the same as in the case of single-sided reading, and the operation is performed at the same timing (sheet interval). The leading edge of the next original is aligned by the pull-out roller 12 of the registration section C (FIG. 3C), and is conveyed from the turn section D to the reading conveyance section E. When the registration sensor 17 detects the leading edge of the next original, the double-sided switching claw 41 moves in the i → j direction. The first surface of the document is read by the reading unit 201 of the reading / conveying unit E, passes from the lower reversing switching claw 23 to the upper part of the paper discharge roller 23 and the double-sided switching claw 41, and is guided to the first switchback reversing unit F ( FIG. 3 (K), (K)).

The second original is read on the second side in the same manner as the above-mentioned operation. By such an operation, the reading of the first and second sides is completed, and the second original is overtaken by the second original in the standby state by the second switchback unit H. The double-sided switching claw 41 described above moves the lower reversal switching claw 24 in the h → g direction by turning on the lower reversal switching claw SOL111 (not shown) at the timing of returning from j → i. Further, by driving the lower reversing motor 106 in the reverse direction, the lower reversing roller 25 and the auxiliary roller 27 are rotated in the clockwise direction so that the document is conveyed from the reversing sheet ejection tray I to the stack section J.

The lower reversal switching claw 24 is returned in the g → h direction by turning off the lower reversal switching claw SOL111 at the timing when the leading edge of the document is conveyed to the paper discharge roller 28 by the pulse count of the lower reversal motor 106. When the trailing edge of the original is detected by the lower reversing sensor 26, the sheet is discharged immediately before the trailing edge of the original comes out of the nip portion of the pair of upper and lower rollers of the sheet discharging roller 28 by the pulse counter of the sheet discharging motor 104 as in the case of single-sided sheet discharging. The driving speed of the motor 104 is reduced so that the document discharged onto the discharge tray 29 does not suddenly jump out (FIG. 3 (C)). The work is completed by repeating the above operation by a predetermined number of sheets.

Next, the movable tray 401 provided in the paper discharge tray 29, which is a feature of this embodiment, will be described.
The movable tray 401 has a substantially L-shape, and the originals for which image formation has been completed are stacked on this tray and are pushed out in the paper discharge direction in conjunction with the opening operation of the original table 2. ing. The movable tray 401 and the document table 2 are fixed by a plurality of connecting members. The first connecting member 405 is a rod-shaped member, and one end thereof is the movable tray 4
It is fixed to 01, and the other end is connected to the second connecting member 404 via the connecting portion k. Second connecting member 4
A third connecting member 403 is swingably connected near the upper portion of 04 in a direction substantially orthogonal to the second connecting member 404.
Further, a substantially L-shaped fourth connecting member 402 is connected to the right end portion of the third connecting member 403 via a connecting portion m. The other end of the fourth connecting member 402 is provided on the original table 2
It is fixed to.

Next, the operation of the movable tray 401 will be described. When the document table 2 is opened in the arrow K direction in the figure, the fourth connecting member 402 moves in the arrow L direction in conjunction with this operation. Then, the third connecting member 403 connected to the fourth connecting member 402 rotates in the direction of arrow M, and the second connecting member 404 moves in the direction of arrow N. Then, the movable tray 401 connected to the first connecting member 405 slides on the inclined surface of the paper discharge tray 29. In this way, the movable tray 401 moves in the paper discharge direction in conjunction with the opening operation of the document table 2. On the contrary, the original table 2 is indicated by an arrow K in the figure.
When operated in the direction opposite to the direction, the movable tray 401 interlocks with this closing operation in the direction opposite to the paper discharge direction (base position).
Return to. In this way, since the movable tray 401 can move in association with the opening operation of the document table 2, even if a small document is stacked in the interior of the paper discharge tray 29, the document is pushed out by the movable tray 401. Therefore,
The visibility is improved and the original can be easily taken out.

Further, since the movable tray 29 returns to the home position by the closing operation of the original table 2 after taking out the original, the movable tray 29 does not hinder the original discharge even if the next job is started. Further, in the present embodiment, since the above operation is manually performed, there is no problem that the movable tray 401 cannot be moved to the next job unless the discharged document is taken out in a normal state where the movable tray 401 does not return to the home position. The user can freely take out the discharged original when he wants to take it out.

Next, other embodiments will be described. In the description, parts having the same effects as the parts described above are designated by the same reference numerals, and detailed description thereof will be omitted. To do. FIG. 4 shows a second embodiment of the present invention. In the second embodiment, the moving amount of the movable tray 29 can be changed by selecting the opening angle of the document table 2. Accordingly, the movement amount can be changed according to the size of the original, and the original can be taken out at a fixed position regardless of the size of the original.

As shown in FIG. 4, an opening angle adjusting dial (positioning means) 40 is provided at the end of the rotary shaft of the original table 2.
An original 7 is rotatably supported together with the original table 2. The dial 407 is provided with bottches 411 at regular intervals, and the opening angle of the document table 2 can be changed at an arbitrary position by a position regulating member 408 that contacts the dial 407. In this way, the open angle of the document table 2 can be arbitrarily selected, so that the position of the movable tray 29 can be changed by setting the open angle according to the size of the document, and the degree of freedom is high.

In the third embodiment, by changing the shape of the movable tray 401, the original can be taken out easily. As shown in FIG. 5, a cutout portion 421 having a substantially quadrangular shape in plan view is provided on the paper ejection direction side of the movable tray 401. Further, a groove 423 is also provided on the paper discharge tray 29 side in the paper discharge direction so that a finger can be inserted.
In this way, since the notch 421 for inserting the finger is provided,
The original can be easily taken out by inserting a finger into the cutout portion 421.

In the fourth embodiment, triangular ribs 425 are provided on the inclined surface of the paper discharge tray 29 as guide means that gradually increase in height in the paper discharge direction. . When the movable tray 401 moves from the home position in the paper discharge direction, it moves along the upper ends of the triangular ribs 425, and a gap is formed between the paper discharge tray 29 and the movable tray 401. By inserting a finger into this gap, the discharged document can be easily taken out.

The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the invention. In the above-described embodiment, the movable tray 401 is configured to move in association with the opening / closing operation of the document table 2, but the invention is not limited to this, and it may be configured to move in association with a member other than the document table 2.

[0051]

According to the first aspect of the present invention, the original moving means moves in conjunction with the opening operation of the original storing means, so that even if a small original is stacked in the back of the original discharging section, it can be taken out. The document is pushed to the side. Therefore, the visibility is improved and the original can be easily taken out.

According to the second aspect of the present invention, the same effect as that of the first aspect of the invention can be obtained, the same effect as that of the first aspect of the invention can be obtained, and the closing operation of the document storing means can be performed. Since it can be manually operated, in the case of a large-sized document, the document moving means can be returned to the original position. Therefore, there is no problem that the user cannot move to the next job without taking out the discharged original, and the user can freely take out the discharged original when he wants to take it out.

According to the third aspect of the invention, the same effect as that of the first or second aspect of the invention can be obtained, and the opening angle of the document storing means can be arbitrarily selected. Therefore, the opening angle according to the size of the document can be obtained. By setting, the position of the document moving means can be changed, and the degree of freedom is high.

According to the invention described in claim 4 or 5, the same effect as that of the invention described in any one of claims 1 to 4 is obtained, and the upper and lower surfaces of the document are sandwiched between the notches or the depressions with fingers. , The original can be easily taken out.

According to the sixth aspect of the present invention, the same effect as that of the first aspect of the present invention can be obtained, and when the document moving means moves on the discharge tray surface in the discharge direction, Since a gap is formed between the paper tray surface and the document moving means, the discharged document can be easily taken out by pinching the upper and lower surfaces of the document with fingers from this gap.

[Brief description of drawings]

FIG. 1 is a sectional view schematically showing an operation of an automatic document feeder of the present invention.

FIG. 2 is a control block diagram of FIG.

FIG. 3 is a diagram showing a conveyance state of FIG.

FIG. 4 is a perspective view showing a second embodiment.

FIG. 5 is a perspective view showing a third embodiment.

FIG. 6 is a perspective view showing a fourth embodiment.

FIG. 7 is a sectional view showing a fourth embodiment.

FIG. 8 is a sectional view schematically showing the entire automatic document feeder of the present invention.

[Explanation of symbols]

29 Output tray (original paper output section) 200 Automatic Document Feeder 401 Movable tray (document moving means) 407 Open angle adjustment dial (positioning means) 421 Notch 423 depression A Document setting section (Document storage means)

Claims (6)

[Claims] 1. A document storing means for storing a plurality of documents,
Transporting means for transporting the document stored in the document storing means to a predetermined image reading position, and a document arranged below the document storing means,
In addition, in the automatic document feeder including the document discharge unit for discharging the document after the image reading, the document storing unit widens the space between the document discharge unit and the closed position where the document is placed. It is movable from the closed position to the open position opened by a predetermined angle, and the document discharging section is provided with a document moving unit which is interlocked with the document storing unit, and the document moving unit responds to the opening operation of the document storing unit. An automatic document feeder, which pushes out a discharged document in a certain direction in the discharge direction. 2. The automatic document feeder according to claim 1, wherein the document moving unit returns to the original position in association with the closing operation of the document storing unit after the document is taken out from the paper discharge unit. . 3. The automatic document feeder according to claim 1, further comprising a positioning unit for holding the opening angle of the document storing unit, and changing the moving amount of the document moving unit according to the opening angle. 4. The automatic document feeder according to any one of claims 1 to 3, wherein the document moving means has a cutout portion for pinching the upper and lower surfaces of the discharged document with fingers. . 5. The automatic document feeding apparatus according to claim 1, wherein the document delivery unit main body has a recess for holding the upper and lower surfaces of the delivered document with fingers. apparatus. 6. A guide is provided on the discharge tray surface so as to form a gap between the transport tray surface and the document moving means when the document moving means moves on the discharge tray surface in the discharge direction. 6. The automatic document feeder according to claim 1, further comprising guide means.