JPH11106150A - Document circulating feeding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To discharge a document to a placing position free to carry out carrier motion from a refeeding port corresponding to size of the document by furnishing a feeding means, a guide member, a carrier discharge means, a guide part, etc. SOLUTION: An end fence 5 is provided in the neighbourhood of the other end part in the document carrier direction of a document placing base 2 and a document carrier guide 8 is provided downward against a setting position of a carrier discharge means 6, and both of them are free to move in the document carrier direction. Thereafter, the document fed by feeding means 3, 4 is discharged from the other end part in the document carrier direction of the document placing base 2 to a document placing position free to feed by the feeding means 3, 4. Consequently, it is possible to freely move a discharge position of the document by freely changing the document placing position in accordance with length in the document carrier direction. Accordingly, it is possible to discharge the document to the document placing position free to carry out recarrying motion in correspondence with size of the document. Additionally, it is possible to carry the documents of various thickness including thin paper to thick paper.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a document circulation type automatic document feeder which is applicable to a copying machine or the like and has a document restacking section.

[0002]

2. Description of the Related Art In copiers, printers, and the like, originals are fed out of a bundle of originals placed on an original placing section one by one from a paper feed port and conveyed to an exposure position. A document circulating feeder that discharges the document to the document placing portion is used. In this document circulating feeder, after the above-described series of transport operations are performed once, a series of transport operations are performed again, and the series of transport operations are performed a plurality of times to thereby obtain all of the document bundle. An exposure operation is performed on the document.

[0003]

However, in the document circulating / feeding device, the paper feed port and the paper discharge port are provided at ends of the document placing section which are different from each other in a document transport direction. If the size of the document is small, the document discharged from the paper exit is not positioned at the leading end in the transport direction of the paper supply port, and the document is sent out again from the paper supply port, There is a first problem that it is difficult to perform the transport operation.

[0006] The document circulation / feeding device has a Japanese Patent Publication No. 6-1.
No. 03407 and JP-A-4-133979, U.S. Pat. No. 4,469,436, and JP-B-2-1063 and JP-A-6-148.
No. 978 is known. In Japanese Patent Publication No. 6-103407, a document is inverted before exposure, and the document is discharged from a paper feed port of a document placement unit. In this case, the discharge position of the document is always constant, and page sequential feeding is performed.

The device described in Japanese Patent Application Laid-Open No. Hei 4-133979 is capable of supporting vertical transport and has good operability. In this case, the reverse page sequential feeding is performed, but the curve of the document conveyance path is complicated and complicated, and it is difficult to convey the cardboard document and high-speed conveyance. U.S. Pat. No. 4,469,436 is a transverse feeder in which a discharge port is made to correspond to a document size by moving a small guide and roller pair. In this case, it is possible to cope only with a small difference in the size of the conveyed document.

The device described in Japanese Patent Publication No. 2-1063 is capable of supporting vertical transport and performs a switchback operation in an exposure unit. In this case, reverse page forward feeding is performed, but since a switchback operation is performed,
It takes time to replace the originals, so it is difficult to transport the originals at high speed. Japanese Unexamined Patent Application Publication No. 6-148978 has a plurality of switchable or movable discharge outlets, but cannot place a document at an arbitrary position.

As described above, in the conventional document recirculation feeding apparatus, in addition to the first problem described above, it is difficult to transport documents having various thicknesses from thin paper to thick paper, and the document is transported at high speed. There was also a second problem that it was difficult to do so. Accordingly, a first object of the present invention is to solve the first problem described above, and to discharge a document to a placement position where the sheet can be conveyed again from a paper feed port in accordance with the size of the document.

A second object of the present invention is to solve the above-mentioned second problem, to convey an original having various thicknesses from thin paper to thick paper, and to convey the original at a high speed.

[0009]

According to the first aspect of the present invention,
In order to solve the first and second problems, a document placed at a predetermined document placing position on a document placing table is fed from one end of the document placing table in a document transport direction. Feeding means, a guide member provided near the other end of the document mounting table in the document transport direction so as to be movable in the document transport direction, and provided above an installation position of the guide member; The document fed by the feeding unit is discharged from the other end of the document table in the document conveying direction to the document placement position which is a placement position of a document that can be fed by the feeding unit. A conveying and discharging unit, provided below the installation position of the conveying and discharging unit, and movably provided in the document conveying direction, and fed by the feeding unit in cooperation with the conveying and discharging unit. Place the document on the document table It is characterized in that the other end of the manuscript conveyance direction and a guide member for discharging the document placing position is the mounting position of the feed that can document by the feeding means.

According to a second aspect of the present invention, in order to solve the above first and second problems, in the first aspect of the present invention, the conveying and discharging means comprises a plurality of endless belts, and a plurality of endless belts. The endless belt is arranged in parallel with the document transport direction with a predetermined gap in the width direction with the length direction as the document transport direction, and the guide member is arranged to bite into the gap by a predetermined amount. It is a feature.

According to a third aspect of the present invention, in order to solve the above first and second problems, in the first aspect of the present invention, the conveying and discharging means is arranged such that a length direction is a width of the original conveying direction. A plurality of narrow endless belts arranged in parallel with the document transport direction with a predetermined gap in the direction, wherein the guide member has a curved width direction cross section and the length direction is the document transport direction. Wherein the endless belt is arranged substantially parallel to and alternately with the thin plate member in the length direction.

According to a fourth aspect of the present invention, in order to solve the above first and second problems, in the first aspect of the present invention, the transport / ejection means is provided so as to be openable and closable by covering the document table. And a cover member integrally formed. According to a fifth aspect of the present invention, in order to solve the first and second problems, in the first aspect of the present invention, a direction in which a document is discharged to the document placing position by the transport discharge unit is defined. An elastic member that elastically presses the guide member in the opposite direction, wherein the guide member has one end engaged with the guide member and the other end engaged with the elastic member. And provided so as to be extendable and contractible in the document conveying direction.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing one embodiment of a document circulation feeding device according to the present invention. FIG. 2 is a diagram showing a part of the document circulation feeding device shown in FIG. 3 and 4 are views showing a part of the document circulating and feeding apparatus according to the embodiment.

First, the configuration will be described. FIG. 1 is a schematic overall configuration diagram of an embodiment of a document circulation feeding device according to the present invention. FIG. 2 is a partially enlarged view of the document circulating and feeding apparatus shown in FIG. In the document circulating / feeding device shown in FIG. 1, reference numeral 1 denotes a document circulating / feeding device.
Includes a feeding unit, a guide member, a conveyance discharge unit, and a guide member.

The feeding means feeds a document placed at a predetermined document placing position on the document placing table 2 from one end of the document placing table 2 in the document transport direction. The feeding unit includes a feeding belt 3 that contacts the fed document and a feeding belt 3.
And a vacuum tank 4 that rotationally drives the vacuum tank. The guide member includes an end fence 5 and is provided near the other end of the document table 2 in the document transport direction so as to be movable in the document transport direction.

The document placement position is a document placement position at which the document can be fed by the feeding means, and the end fence 5 is located at one end of the document placement table 2 in the document transport direction.
Is determined by the position of The position of the end fence 5 is set according to the size of the document. The transport discharge unit is provided above the installation position of the end fence 5, and transfers the document fed by the feed unit from the other end of the document table 2 in the document transport direction to the feed unit. The document is discharged to the document placement position, which is the placement position of the document that can be fed by the printer. The transport / discharge unit includes a discharge belt 6 and a driving unit 7 that rotationally drives the discharge belt 6.

The guide member is provided below the installation position of the transport / discharge means, is movably provided in the document transport direction, and is supplied by the feed means in cooperation with the transport / discharge means. The fed document is discharged from the other end of the document placing table in the document transport direction to the document placing position which is a document placing position where the document can be fed by the feeding means. The guide member includes a document transport guide 8.

The paper discharge belt 6 is provided with an openable document cover 3.
6 is integrally formed with a paper discharge belt 6 and a driving means 7. By lifting the document cover 36 in the direction of the arrow H, the document cover 36 is opened at the boundary between the discharge belt 6 and the document transport guide 8. Document cover 36
Are provided so that they can be opened, so that it is possible to easily carry out processing for dealing with troubles during document conveyance. Also for the document setting operation, the paper ejection belt 6 provided to cover the document setting surface is opened, so that the operability is improved.

The original conveying guide 8 has an end on the original discharging side engaged with the top of the end fence 5, and is wound around a winding means 34 via a guide roller 33. There is a mainspring 35 inside the winding means 34. When the end fence 5 is moved in the direction of arrow F, the document transport guide 8 is unwound, and when the end fence 5 is moved in the direction of arrow G, the document transport guide 8 is taken up.

The document transport guides 8 are arranged alternately with respect to the paper discharge belt 6 and are configured to bite. The document conveyance force is generated by the waist of the document sandwiched between the paper discharge belt 6 and the document conveyance guide 8. The stiffening of the document greatly contributes to the stability of the document when the document is ejected. If the document is sufficiently waisted, the document is ejected straight, and problems such as buckling at the front end and rounding at the rear end are caused. Can be improved.

The document conveying guide 8 is curved in the direction of the short cross section. Since it has a curved shape, it has a property of constantly trying to become a linear shape when no external force is applied. Due to this property, even when the original is on the original transport guide 8 and is receiving the transporting force of the discharge belt 6, the original transport guide 8 maintains a linear shape. When the guide roller 33 is pressed against the guide roller 33 to form a predetermined angle, the document transport guide 8
Breaks and bends.

When the document conveying guide 8 is wound by the winding means 34, it is wound around the rotation shaft of the winding means 34 and is stored in a small size. The force of the document conveying guide 8 in which the cross section in the short direction becomes a linear shape depends on the thickness of the material, the magnitude of the curvature,
It depends on factors such as the width of the material. 12mm in width,
With a thickness of 0.15 mm and a radius of curvature of about 15 mm, 13
Even if 5 kg / * continuous paper is used, it can withstand sufficiently.

FIG. 3 is a partial cross-sectional view of the document circulating and feeding apparatus according to one embodiment. In the document circulating / feeding device shown in FIG. 3, reference numeral 41 denotes a document circulating / feeding device. The document circulating / feeding device 41 has the same configuration as that shown in FIGS. The conveying and discharging means includes a plurality of endless belts 4.
6 is comprised. The plurality of endless belts 46 are arranged in parallel with the document conveyance direction with a predetermined gap in the width direction with the length direction being the document conveyance direction, and the guide members 48 are arranged so as to bite into the gap by a predetermined amount. .

In a document circulating / feeding apparatus according to an embodiment, not shown, the document circulating / feeding apparatus has the same configuration as that shown in FIG. The conveying and discharging means is composed of a plurality of endless belts arranged in parallel with the document conveying direction with a predetermined gap in the width direction with the length direction as the document conveying direction. The guide member is provided to be located in the gap. The document is transported in the document transport direction so as to be sandwiched between the endless belt and the guide member.

In a document circulating / feeding device according to an embodiment, not shown, the document circulating / feeding device has the same configuration as that shown in FIG. The conveying and discharging means is composed of a plurality of narrow endless belts arranged in parallel with the document conveying direction with a predetermined gap in the width direction with the length direction as the document conveying direction. The guide member is formed of a narrow thin plate-shaped member having a curved cross section in the width direction and having a length direction as the document conveyance direction. The endless belt is
The thin plate-like members are arranged substantially parallel and alternately in the length direction. The thin plate member is disposed at a position corresponding to the gap. The thin plate-shaped member may be arranged so as to bite into the gap by a predetermined amount.

In a document circulating / feeding device according to an embodiment not shown, the document circulating / feeding device has the same configuration as that shown in FIG. The transport / ejection means is integrally formed with a cover member which covers the document table and is provided to be freely opened and closed. FIG. 4 is a partial configuration diagram of the document recirculation feeding device according to the embodiment. In the document circulating / feeding device shown in FIG. 4, reference numeral 51 denotes a document circulating / feeding device. The document circulating / feeding device 51 has the same structure as that shown in FIGS. Prepare.

The elastic member elastically presses an end fence (not shown) in a direction opposite to a direction in which a document is discharged to the document placing position by the not-shown conveyance discharge means. The elastic member includes a mainspring 54 and winding means 55 for winding the mainspring 54. The guide member 58 has one end engaged with the end fence and the other end engaged with the mainspring 54, and is provided so as to be able to expand and contract in the document transport direction.

The guide members 58 are arranged alternately with respect to the conveying / discharging means and are formed so as to be able to bite into each other. The conveying force is generated by the waist of the document sandwiched between the conveying / discharging means and the guide member 58. Is configured.
Next, the operation will be described. The operation of transporting a document in the document circulating and feeding apparatus 1 shown in FIG. 1 will be described. First, a single-sided transport mode, which is a transport operation in which one side of a document is transported to an exposure position on the contact glass 9, will be described.

The operator places the original on the original placing position of the original placing table 2 such that the surface in contact with the contact glass 9 at the exposure position faces vertically upward. The document placing position is determined by the positions of the end fence 5 and the side fence 10 on the document table constituting the document placing table 2. When an operator presses a start key on the operation panel of a drive control system of a document circulation feeding device (not shown) for instructing start of document conveyance operation, the partition plate 11 built in the end fence 5 is driven to rotate and document placement is performed. The document is placed on the top of the document bundle placed on the table 2. At the same time, the fan motor 12 rotates, and compressed air is blown from a plurality of nozzles 14 provided below the air knife 13 from the leading end of the document bundle in the document transport direction to lift the document.

At this time, if a suction force is given by turning on a valve (not shown) in the vacuum tank 4,
Only the lowest document in the document bundle is sucked through the plurality of holes on the upper surface of the paper feed belt 3, and the other documents remain in a floating state. When the paper feed belt 3 is rotated in the counterclockwise direction on the paper surface of FIG. 1 in this state, only the lowermost document is sent out.

The fed original is gripped by the pull-out roller 15 at the leading end in the transport direction, and is detected by the IN sensor 16. When the leading edge of the document is detected by the IN sensor 16, the driving of the paper feed belt 3 is stopped, and the valve in the vacuum tank 4 is turned off to cut off the suction force. Therefore, the conveyance of the document in the conveyance direction by the rotationally driven paper feed belt 3 is stopped.

The direction in which the document held by the pull-out roller 15 is conveyed is changed to the direction of arrow A by a sheet feeding deflection claw 17 driven by a solenoid (not shown). By 19, it is conveyed to the exposure position on the contact glass 9. The pull-out roller 15, the paper feed roller 18, the reversing roller 20, which will be described later, and the SADF roller 21 are driven at the same speed by the same motor (not shown).

The document at the exposure position is transported by the transport belt 19 and the paper discharge roller 22, and the direction in which the document is transported is changed to the direction of arrow B by the discharge deflection claw 23. The document is conveyed by a discharge belt 6 and discharged to the document table. The separation of the job is performed by the partition plate 11. Next, a two-sided conveyance mode, which is a conveyance operation in which both sides of the document are conveyed to the exposure position on the contact glass 9, will be described.

As in the single-sided conveyance mode described above, the original sent out from the original placing table 2 is
Conveyed by The direction in which the original is conveyed is changed to the direction of arrow C by the sheet feeding deflection claw 17 and the reversing deflection claw 24 interlocked with the sheet feeding deflection claw 17. The manuscript is
The sheet is conveyed by the reversing roller 20 and the SADF roller 21 and further sent to the reversing conveyance path 26 by a SADF deflection claw 25 driven by a solenoid (not shown). The position of the SADF deflection claw 25 is switched at the same time as the operator instructs the start of the transport operation in the duplex transport mode, and the position of the SADF deflection claw 25 is changed until one job is completed.
The operation of switching the position of the F deflection claw 25 is not performed.

The SADF pressure roller 27 is provided with a SA
It is driven by a solenoid (not shown) in conjunction with the DF partition claw 28. At the same time as the switching operation of the SADF deflection claw 25, the SADF pressure roller 27 is driven to change to a pressurized state (see FIG. 2). When the reversing sensor 29 detects that the rear end of the document in the conveying direction has passed the installation position of the reversing sensor 29, the above-described motor (not shown) rotates in the reverse direction to perform a switchback operation. At the same time, feeding claw 1
7 and the reversing deflecting claw 24 are switched in position, and the direction in which the switched back original is conveyed is changed to the direction of arrow D.

The original is transported to an exposure position on the contact glass 9 by the paper feed roller 18 and the transport belt 19. At this time, the surface of the document that comes into contact with the contact glass 9 at the exposure position is the back surface with respect to the surface that faces vertically upward when the document is placed on the document table 2. The document at the exposure position is conveyed and discharged to the document table in the same manner as in the single-sided conveyance mode described above. At this time, the back side of the document discharged to the document table is directed vertically upward.

When the above-described transport operation is performed for all the originals of the bundle of originals placed on the original placing table 2, the same transport operation is performed on the original bundle discharged to the original placing table 2. Will be done again. Since the original bundle is placed upside down from the beginning, the transport operation is performed on both sides of the original bundle. Next, SADF
The mode will be described.

The original is set on the SADF original table 30 with the front end thereof abutting against the SADF partitioning claw 28 with the image surface facing upward. The SADF partition claw 28 is in a partition state in a default state, and the interlocking SADF pressure roller 27 is in a non-pressurized state. When the operator instructs the start of the transport operation in the SADF mode, the SADF partitioning claw 28 is opened and the document is pressed, and at the same time, a motor (not shown) is driven. SADF roller 2
1 and the reversing roller 20.

The direction in which the document is conveyed is changed to the direction of arrow D by the sheet feeding deflection claw 17 and the reverse deflection claw 24. The original is conveyed to an exposure position on the contact glass 9 by the paper feed roller 18. The document at the exposure position is transported by the transport belt 19 and the discharge roller 22. The direction in which the document is conveyed by the discharge deflection claw 23 is changed to the upward direction in FIG. 1, and the document is conveyed toward the SADF discharge table 31 in the direction of arrow E, and is discharged by the discharge roller 32. The paper is discharged to the paper table 31.

In the document circulation / feeding apparatus 1 shown in FIG. 1, an end fence 5 is provided near the other end of the document table 2 in the document conveyance direction so as to be movable in the document conveyance direction. A transport discharge unit is provided above the installation position of the end fence 5, and supplies the original fed by the feed unit from the other end of the original mounting table 2 in the original transport direction by the feed unit. The document is discharged to the document placement position, which is a placement position of a document that can be fed, and a document transport guide 8 is provided below the installation position of the transport discharge unit, and is movable in the document transport direction. A document which is provided and which can be fed by the feeding means from the other end of the document placing table 2 in the document feeding direction with the document fed by the feeding means in cooperation with the feeding and discharging means. Before the loading position It is discharged to the document placing position. For this reason, the original placement position can be freely changed according to the length of the original in the original transport direction, and the discharge position of the original can be freely changed. Further, the original can be discharged to the original placing position where the original can be transported again according to the size of the original. For this reason, stable restacking is possible. In addition, a paper ejection port moving mechanism that can cope with the difference in usable document lengths is realized, and documents with various thicknesses from thin paper to thick paper can be transported. At the same time, the document is transported at a high speed, and a document transport path with less stress can be secured. In FIG. 1, the A3 vertical size and the A5 horizontal size can be used, and the original stack type having a large difference in usable original size is used.
The document discharge position can be freely changed even in the case of the five horizontal size, and stable re-stacking is possible. Even in an ADF (automatic document feeder) having a large difference in usable document size, the document discharge position can be freely changed, and the difficulty of the document recirculating ADF without a switchback mechanism can be solved. , Stable re-stacking is possible.

In the document circulating feeder 41 shown in FIG. 3, a plurality of endless belts 46 are arranged in parallel with the document transport direction with a predetermined gap in the width direction with the length direction as the document transport direction. In addition, since the guide member 48 is disposed so as to bite into the gap by a predetermined amount, when the original is made of thin paper which is easily deformed during conveyance,
The document can be transported in the document transport direction while tightly tightening the document, and when the document is made of thick paper, the endless belt 48 itself is displaced so that the document is weakly crimped. The document can be transported in the document transport direction, and the document can be transported in the document transport direction in an appropriate state according to the thickness of paper constituting the document. The pressure required for conveying the document can be ensured, and the stability of document discharge can be ensured.

In one embodiment of the document circulating and feeding device (not shown), the endless belt is arranged in parallel with the document conveying direction with a predetermined gap in the width direction, and the guide member is positioned in the gap. And the document is transported in the document transport direction so as to be sandwiched between the endless belt and the guide member. Therefore, when the document is made of thin paper that is easily deformed during transport, the document is not sufficiently tight. The document can be transported in the document transport direction while performing crimping, and when the document is made of thick paper, the document can be transported in the document transport direction while performing weak crimping by the endless belt itself. Transporting the original in the original transport direction in an appropriate state according to the thickness of the paper constituting the original. Kill.

In one embodiment of the document circulating / feeding device (not shown), the guide member is formed of a narrow thin plate-like member having a curved cross section in the width direction and having the length direction as the document conveyance direction. Since the guide member is made of the same material as the tape measure, the end of the thin plate-like member can be freely stretched and contracted at any position, and can be used for circulating and feeding documents of various sizes. be able to.

In the document circulating / feeding device according to one embodiment (not shown), the transport / discharge means is integrally formed with a cover member which covers the document placing table and is provided so as to be openable and closable. The document transport path can be quickly opened even in the event of a trouble, without impairing the document performance, and a safe document protection function can be obtained. It is possible to improve the operability by ensuring the document setting property, the document takeout property, and the visibility of the document transport path.

In the document circulating feeding device 51 shown in FIG. 4, one end of the guide member 58 is engaged with an end fence (not shown), so that the operation when setting the document and the positioning of the guide member 58 are performed. The operation at the time becomes the same work,
The complexity of the operation can be eliminated. Guide member 5
Numerals 8 are arranged alternately with respect to the transport / discharge means, and are configured so that they can bite into each other. The transport force is generated by the waist of the document sandwiched between the transport / discharge means and the guide member 58. This stiffening of the document also greatly contributes to the stability of the document when the document is sent out.If the document is sufficiently waisted, the document is ejected straight, causing problems such as buckling at the front end and rounding at the rear end. Is also improved.

The embodiment of the present invention has been described above. In addition, another embodiment of the document circulating and feeding apparatus according to the present invention is as follows. In the document circulating feeding device of one embodiment, the document circulating feeding device sequentially feeds documents from the bottom of the documents stacked on the document stacking unit, and after reading the image, from the side opposite to the feeding direction. The sheet is discharged to the document stacking section, sequentially re-stacked, and after all the originals have been read, the sheet is fed again, and the image reading is executed again. ,
In a document recirculation feeding device configured to produce a predetermined number of copies, a document stacking surface extends from a restack discharge end of a maximum size document to near a restack discharge end of a minimum size document. A document conveying means provided so as to be able to convey a document substantially parallel to a document loading surface at an upper portion, and a drive for driving the document conveying means on its lower surface side so as to be able to convey a document in a predetermined direction. Means, for document transport,
Acting from below the document transporting means, the guide means for clamping the document in cooperation with the document transporting means, at least the range clamped by the guide means, the minimum from the restack discharge end of the maximum size document Guide range displacement means for changing the size document to the re-stack discharge end,
It is characterized by comprising. In this apparatus, a discharged document placing portion is provided on the upper surface of the document placing portion, and a document carrying guide is provided below the carrying member, and the guide member is configured to be freely movable. A3 vertical size and A5 which were the drawbacks of type ADF
Even in the case of a document stack type having a large size difference, such as a usable horizontal size, the document discharge position can be freely changed, and stable re-stacking has been enabled.

In the document circulating and feeding apparatus according to one embodiment, the document circulating and feeding apparatus is configured in the same manner as that described above.
The mutual positional relationship between the document conveying means and the guide means is characterized in that the guide member is configured to bite into the inner peripheral side where the endless belt is stretched by a predetermined amount. In this one, the transport member is formed of a belt-shaped member, and is alternately arranged with the guide member,
In addition, by configuring each one without permission,
Sufficient stiffening is performed on thin paper that is easily deformed during transport, and belts are displaced by themselves and weak stiffening is performed on thick paper that is solid even if nothing is done. The matched transport conditions are automatically set.

In one embodiment of the document circulating and feeding apparatus, the document circulating and feeding apparatus is configured in the same manner as described above,
The document conveying means is a narrow endless belt, and the guide means is a narrow thin plate-like member (a metal tape measure material) having a curved cross section in the short direction. It is characterized by being substantially parallel and alternately arranged. In this device, the guide member is made of the same material as that of the tape measure, so that the guide end can be freely stretched and positioned at any position. It became possible to correspond to.

In the document circulating / feeding device of one embodiment, the document circulating / feeding device has the same configuration as that described above.
The document conveying means is integrally formed with an openable / closable cover member for covering the document table. In this apparatus, the discharged document transport section located above the document set section is integrated with the document set section cover, so that the operability of the document set is not hindered and the document transport path can be quickly performed even in the event of a trouble. Can be opened, and a safe document protection function can be obtained.

In the document circulating feeder of one embodiment, the document circulatory feeder is configured in the same manner as described above,
The guide means supports one end of an end plate that regulates the opposite end with respect to the feeding direction of the placed document, and the other end includes
It is characterized in that it is constituted by a stretchable member fixed to a member outside the document placing range on the upstream side of the conveyance via a winding means provided with a winding mechanism. In this apparatus, the operation for setting the original and the operation for aligning the guide are the same work by attaching the discharge original discharge side of the guide member to the end fence, thereby eliminating the complexity of the operation.

There are various embodiments of the document circulating / feeding apparatus according to the present invention in addition to those described above, and the present invention is not limited to those described above.

[0052]

According to the first aspect of the present invention, the guide member is provided near the other end of the document placing table in the document transport direction so as to be movable in the document transport direction, and the transport discharge means is provided. Is provided above the installation position of the guide member, and the document fed by the feeding means can be fed by the feeding means from the other end of the document mounting table in the document feeding direction. The document is discharged to the document placement position, which is a document placement position, and the guide member is provided below the installation position of the transport discharge unit, and is provided movably in the document transport direction. The document fed by the feeding means in cooperation with the feeding / ejecting means is placed at a document placing position where the document can be fed by the feeding means from the other end of the document placing table in the document feeding direction. At the document placement position Out to. Therefore, the original placement position can be freely changed according to the length of the original in the original transport direction, and the discharge position of the original can be freely changed. Further, the original can be discharged to the original placement position corresponding to the size of the original and capable of being fed again by the paper feeding means. For this reason, stable restacking is possible.

According to the second aspect of the invention, in addition to the effect of the first aspect, the plurality of endless belts are spaced apart from each other by a predetermined gap in the width direction with the length direction as the document conveyance direction. Since the guide member is arranged so as to bite into the gap by a predetermined amount while being arranged in parallel with the conveyance direction, when the original is made of thin paper which is easily deformed during conveyance, a sufficient sufficient waist is attached to the original. When the original is made of thick paper, the endless belt itself is displaced and the original is conveyed in the original conveying direction while weakly crouching the original. Thus, the original can be transported in the original transport direction in an appropriate state according to the thickness of the paper constituting the original.

According to the third aspect of the invention, in addition to the effect of the first aspect, the guide member has a curved cross section in the width direction and has a narrow width in which the length direction is the document conveying direction. Since the guide member is made of the same material as the tape measure, the end of the thin plate member is arranged at an arbitrary position in the document conveying direction of the document placing table. Thus, it is possible to cope with the circulating feeding of documents of various sizes.

According to the fourth aspect of the present invention, in addition to the effect of the first aspect, the transport / discharge means is integrally formed with a cover member which covers the document table and is provided so as to be freely opened and closed. Therefore, the operability of the operation of placing the original on the original placing table is not hindered, and the original transport path can be quickly opened even when a problem occurs in transporting the original. A protective function can be obtained.

According to the fifth aspect of the present invention, in addition to the effect of the first aspect of the present invention, one end of the guide member is engaged with the guide member. The operation at the time of positioning the guide member is the same operation, and the complexity of the operation can be eliminated.

[Brief description of the drawings]

FIG. 1 is a schematic overall configuration diagram of an embodiment of a document circulation feeding device according to the present invention.

FIG. 2 is an enlarged view of a part of the document recirculation feeding device shown in FIG. 1;

FIG. 3 is a partial cross-sectional view of the document circulation feeding device according to the embodiment;

FIG. 4 is a partial configuration diagram of a document circulation feeding device according to an embodiment;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Document circulation feeder 3 Paper feed belt (feeding means) 4 Vacuum tank (feeding means) 5 End fence (guide member) 6 Paper discharge belt (conveyance discharge means) 7 Drive means (conveyance discharge means) 8 Document conveyance Guide (guide member) 41 Document circulation / feeding device 46 Endless belt (conveyance / discharge means) 48 Guide member 51 Document circulation / feeding device 54 Mainspring spring (elastic member) 55 Winding means (elastic member) 58 Guide member

Claims (5)

[Claims] A feeding means for feeding a document placed at a predetermined document placing position on the document placing table from one end of the document placing table in a document conveying direction; A guide member provided in the vicinity of the other end in the document conveyance direction so as to be movable in the document conveyance direction, and a document provided above the installation position of the guide member and fed by the feeding unit. A transport discharge unit configured to discharge the document from the other end of the document mounting table in the document transport direction to the document mounting position that is a mounting position of a document that can be fed by the feeding unit; It is provided below the installation position,
The document fed by the feeding means is provided so as to be movable in the document feeding direction and cooperates with the feeding / ejecting means to feed the document from the other end of the document mounting table in the document feeding direction. And a guide member for discharging the document to the document placement position, which is a document placement position where the document can be fed by the means. 2. The apparatus according to claim 1, wherein the conveying and discharging means includes a plurality of endless belts, and the plurality of endless belts are parallel to the document conveying direction with a predetermined gap in a width direction with the length direction as the document conveying direction. 2. The document circulating / feeding device according to claim 1, wherein the guide member is arranged so as to bite into the gap by a predetermined amount. 3. The conveying and discharging means comprises a plurality of narrow endless belts arranged in parallel with the document conveying direction with a predetermined gap in a width direction with the length direction as the document conveying direction, The guide member is formed of a narrow thin plate-shaped member having a curved widthwise cross-section and having a length direction as the document conveyance direction, and the endless belt is substantially in the length direction with respect to the thin plate-shaped member. 2. The document circulating feeding device according to claim 1, wherein the document circulating feeding devices are arranged in parallel and alternately. 4. The document circulating / feeding device according to claim 1, wherein said transport / discharge means is integrally formed with a cover member which covers said document table and is provided to be freely opened and closed. 5. An apparatus according to claim 1, further comprising an elastic member for elastically pressing said guide member in a direction opposite to a direction in which the original is discharged to said original placing position by said conveying and discharging means. 2. The document circulation according to claim 1, wherein the document circulation has one end engaged with a member and the other end engaged with the elastic member, and is provided so as to be extendable and contractible in the document conveyance direction. Feeding device.