JPS63303334A - Automatic document feeder - Google Patents

Abstract

PURPOSE:To allow a hand insertion table to effectively support thick document by providing a means which sets thick document such as book to a book carrier to scan them and interlocking the table with the book carrier. CONSTITUTION:An automatic feeder 2 is provided with the book carrier 21 to which an engagement pin is fitted. The pin is engaged with a driving part to make the book carrier 21 scan at the reading position. The book carrier 21 is provided with the hand insertion table so as to interlock it. A book is set to the book carrier 21, and the hand insertion table supports surfaces other than a surface to be transferred. Then the book carrier 21 scans and transfers the book at the reading position. On the other hand, a circulation unit 10 or the like sends a sheet-like document to a document glass 4 from a tray 3, thereby transferring the original. Since the book carrier is provided with the hand insertion table, it can support the one page of the opened book to easily copy the book.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an automatic document feeder used for image reading in copying machines, image leagues, and the like.

(Prior Art) Conventionally, there have been three reading methods in devices that read and process originals, such as copying machines and facsimiles. The first method is to place a document on a fixed document table and perform mirror scanning, which is the most widely used method. The second type is a type that scans by moving the document table, and is the mainstream among inexpensive machines. The third method is to automatically feed the document to a reading position and take a panning shot.

The third method is extremely rare, and the reasons for this are: (1) There are more opportunities to handle important manuscripts than in other methods, and there is a greater risk of damaging the manuscripts.

(2) Since the original is fed, wood or thick originals cannot be used or are difficult to handle.

There are drawbacks such as. On the other hand, the third method (1) does not require a return time after scanning, such as mirror scanning or moving the document table, and can feed multiple types of originals one after another at regular intervals, and can handle multiple types of original stripes. is fast.

There is an advantage.

In recent years, there has been a strong demand for simplification and automation of operations, and there has been a trend toward two types: single-function and multi-function, and it is now possible to eliminate the shortcomings of the third method and take advantage of the above advantages. For example, the one described in Japanese Patent Publication No. 55-30621 is provided with a document glass for sheet-like originals and a document glass for thick-material originals, and the one for Iv-thick-material originals is used for sheet-like originals. A dedicated type 1- is used in a movable type, and in both cases, the same exposure optical system is used in the same way to perform exposure in a so-called panning method. Also, special public service No. 58-37530
The method described in Japanese Patent Publication No. 1983-42861 is almost the same system, although it does not permanently install one exclusively for thick originals. Further, in each of these, the document glass that receives and moves the thick document is independent and is sized according to the maximum copy size.

(Problems to be Solved by the Invention) As described in 2 above, when a conventional automatic document feeder is installed, it is possible to read the panning portion of a thick document. The stylus device or use thereof is complicated.

In addition, when copying a thick original, a special original glass is placed on the original glass for exposure when using an automatic document feeder, so depending on whether or not you are copying a thick original, the original glass
It is necessary to correct the optical path length for each sheet, and the structure and operation side need to be corrected accordingly. ffl1 becomes complicated and expensive.

Furthermore, the special original glass for thick originals has a size that corresponds to the maximum copy size, so when copying one side of a two-page spread of the same size of wood as the maximum copy size, it is difficult to copy one side of a double-page book. One side of the document cannot be caught by the original glass and tends to hang down, so you have to put your hand under it and support it above the image reading unit while following the movement of the original glass, making the work complicated. = 3- Also, there is a danger that the hand supporting the tree may get caught or get caught in a part of the image reading unit.

Therefore, the present invention provides a book carrier with an original glass that can be used for both wood and thick originals and thin originals that are automatically fed by an automatic document feeding means, and to read them using a panning method. An automatic document feeder that can solve the above-mentioned problems by connecting a manual feed table to a book carrier when using an automatic feeder and making it useful for supporting trees, thick documents, etc. that protrude from the table. The purpose is to provide

(Means for Solving the Problems) In order to achieve the objective of the present invention, the present invention provides a book carrier having an original glass and on which a wooden or thick original can be placed; 1 scanning means, means for feeding a thin original onto the original glass, and a second scanning means for scanning and moving the original fed by each feeding means on the original glass, and a second scanning means connected to the book carrier. The device is characterized by being equipped with a manual feeding table.

(Function) By being scanned and moved by the first scanning means, the book carrier alone can read a wood or thick original placed on the original glass in a panning method, and can automatically scan the original. When used in combination with the feeding means, the document automatically fed thereby can be scanned and moved on the document glass by the second scanning means, and can also be read using the panning method.

When a book carrier is used in combination with an automatic document feeding means, documents can be fed manually by being guided by a manual feed table connected thereto, and thick documents can be loaded onto the book carrier. When the document is moved and read, even if the document is a book and one page of a double-page spread protrudes from the book carrier, it can be supported by a manual feed table that moves together with the book carrier.

(Embodiment) Hereinafter, an embodiment in which the present invention is applied to an automatic document feeder for panning in a copying machine will be described with reference to the drawings.

First, the overall configuration will be explained with reference to FIG. 1. The copying machine main body 1 in the center of the figure includes a light 11XIa that illuminates the document surface fixedly installed at the second reading position, a lens array lb,
A photoreceptor drum 1c receives image exposure from a lens array 1h, and a charging unit 1 disposed around the photoreceptor drum 1c.
j, developing device] d, transfer section 1e, cleaning section 1k,
In addition, there is a paper feed section 1f that feeds paper to the transfer section 1e, a fixing section 1g that performs fixing processing on the copy paper after the transfer, and a paper discharge section 1h that takes out the copy paper after the fixing processing outside the copying machine main body 1. We are prepared.

An automatic document feeder 2 is provided on the top of the main body 1 of the copying machine, and a paper refeeding unit 11 is connected to the paper discharge section 1h. Paper refeed unit 11 is paper output tray 1! , a paper refeed path 1m, and a normal paper feed section 1n.

The automatic document feeder 2 is of a circulating type, and as shown in detail in FIG. 2, a tray 3 for storing documents is provided at the top, and the documents stored in the tray 3 are taken out one by one from the bottom.
The document is transported along the upper surface of the document glass 4, passes through one reading position of the lens array]hJ, and is returned into the tray 3.
A first circulation path 5 is formed for circulating and feeding documents stored in the tray 3 so as to stack them on top of each other. The tray 3 is formed to be inclined so that the front side in the document feeding direction is positioned downward, and a paper feed roller 6 is provided on the lower surface of the front end thereof.
is provided, and the document is sent out to the first circulation path 5 from the delivery port 3a.

The first circulation path 5 includes a sawaki roller 7.8 that separates the original from the delivery port 3a and sends out only the bottom layer, and a feeding side U-turn guide member that changes the original from a face-up state to a face-down state. 9, a circulation unit 10 installed on the document glass 4, a return path member 14, an intermediate roller 15,
A return-side U-turn guide member 16 that turns the face-down document into a face-up state and returns it to the tray 3 from the rear end, a timing roller 17 provided at the exit of the feed-side U-turn guide member 9, and a return path member 14. The first switching claw 18 is provided at the entrance of the document glass 4 and sends the document that has passed through the reading position on the document glass 4 to either the circulation unit 1-10 or the return path member 14, and the outputs of the return path portions t and l'14. ], and is provided with a feed +1-ra 99 for sending back originals to rays 1 to 3.

A document ejector I--ray 20 is provided at one end of the automatic document feeder 2 and faces the side of the U-turn guide member 16 on the return side. Then, when the return guide member 16 enters, a second switching claw 19 sends out the document that has passed through the return path member 14 to either the return side IJ turn guide section 16 or the document discharge tray 20.
is provided. One roller 7 of the sorting rollers 7.8 is a forward rotating roller, and the other roller 8 is a reverse rotating I roller with a limiter. Further, a peeling claw 1.4a that contacts the original glass 4 is provided at the tip of the return path member 14 to peel the original from the original glass 4.

The document glass 4 is attached so as to form the bottom surface of a book carrier 21 housed in the lower part of the automatic document feeder 2, and the book carrier 21 moves in the direction of document movement along the top surface of the copying machine main body 1. IJ is set up to be possible. The circulation unit 10 is movable between an operating position shown by a solid line in FIG. 2 and a retracted position located diagonally above and below the rear of the tray 3 as shown by a phantom line. In this case, the above-mentioned movement of the book carrier 2 is made possible with a thick original such as a book placed thereon, so that even thick originals such as a book can be panned.

Therefore, in the circulation unit 10, the lower half 9a of the U-turn guide member 9 and the timing roller 17 are integrated so as to move together, and the return path member 14 is integrated.
The front half part 14b is also provided with the first switching claw 18 so that it can be rotated diagonally in two parts in conjunction with the movement of the circulation unit 10 to the retracted position, and these U-turn guides are provided when the book carrier 21 is moved. The member 9, the return path member 14, the timing roller J7, and the first switching type]8 are also kept out of the way.

The circulation unit 10 includes an oval second circulation path 22 that includes the top surface of the original glass 4 as one side, and circulates the original through a short path unrelated to the tray 3 and repeatedly feeds the original to the reading position. It is useful for taking multiple panning shots. The second circulation path 22 is
A driving roller 11 and a driven roller 12 arranged at both ends of the roller
The heald 13 is wound between these rollers, and the guide member 23 covers the outer periphery of the heald 13 except for the portion facing the document glass 4. The circumferential length of the second circulation path 22 is set to be the sum of the maximum length of the document in the feeding direction and a very short margin. As a result, in the case of multiple copying, each copying process is performed continuously with only a very short time interval corresponding to the set margin, and loss time is almost eliminated.

In order to absorb the slackness of the belt 13, the driven roller 12 has a bearing portion held in an elongated hole and is biased by a spring (not shown). Further, a detection switch (not shown) for monitoring the number of passing originals is provided on the guide member 23.

As shown in FIGS. 3 and 5, a pair of side regulating members 24 and 25 are provided on both sides of the tray 3 for centering the document. This side regulating member 24,25 is connected to the pinion 28 and the rack 2 that meshes with the pinion 28.
It is attached to an interlocking member 268, 26b which is configured to move near and far in synchronization through interlocking via 7, so that the distance can be adjusted while maintaining the center position so that the distance matches the width size of the document being used. Each interlocking member 26a, 26b
can be moved in the width direction of the tray 3 by fitting the elongated holes 26c into the guide pins 26d.

Further, a skew prevention member 30 is vertically installed from each side regulating member 24, 25 so as to protrude from above into the opening 29 formed in the guide member 23 of the circulation unit 10, and the skew prevention member 30 is connected to the second circulation It faces both sides of the path 22 and restricts both edges of the document passing through the path 22, thereby preventing the circulating document from being skewed. This skew prevention member 30 is attached to the side regulating members 24.2 in accordance with the document.
By positioning 5, the positions are simultaneously determined.

The opening 29 is formed in such a size that the skew prevention member 30 and the circulation unit 10 do not interfere with each other when adjusting the position of the skew prevention member 30 or moving the circulation unit 10 to the retracted position.

Gears 31 and 32 are attached to one end of the support shafts 7a and 8a of the sorting roller 7.8, respectively, and mesh with a drive pinion 35 that is rotationally driven by a drive motor 34, thereby moving the lower sorting roller 7 in the paper feeding direction. In addition, the handling rollers 8 are simultaneously driven in the opposite direction to the sheet feeding direction. Further, a plate cam 37 for operating an empty detection device 36 in the tray 3 is attached to the other end of the support shaft 7a of the sorting roller rough.

The empty detection device 36 is mounted on a bracket 38, 49 fixed to the side regulating member 24, and includes an empty detection lever 43 and a photoswitch 47 that detects emptyness based on the rotational position of a 12-rotation disk 46 interlocked with the empty detection lever 43, and the plate A cylindrical cam 42 that returns the empty detection lever 43 to the operating position by the operation of the cam 37.
It consists of

The empty detection lever 43 and the rotary disk 46 are supported on a bracket 49 by a shaft 49a so as to rotate together with the passive protrusion 45. On the other hand, the cylindrical cam 42 is connected to the shaft 49
Bracket 3 faces a on the same axis and can move in and out freely.
The end cam 4 is attached to one end of the retractable shaft 39 supported by the end cam 4.
2a is arranged to face the passive protrusion 45 in the axial direction. A plate-shaped cam follower 40 is brought into contact with the plate cam 37 at the other end of the retractable shaft 39 and one end of an auxiliary shaft 39a parallel to the retractable shaft 39 and supported by the bracket 38 so as to be freely retractable.

Here, the detection lever 43 is rotatable around a shaft 49a and tries to stabilize under its own weight in a hanging position with the tip end 43a facing downward, and cannot be rotated in the direction of the arrow in FIG. 3 from this hanging position. Therefore, the tip portion 43a is connected to the side regulating member 24.
The document in the tray 3 passes through the window 24a formed in the window 24a.
- It can be stabilized by resting on the surface, and when the document below it is removed, it returns to the hanging position under its own weight. Therefore, the photo switch 47 detects the return of the detection lever 43 from the state where the original is placed on two sides to the hanging position as a change in the position of the notch in the rotary disk 46 that rotates integrally with the detection lever 43. It is now possible to detect when the original is empty.

On the other hand, the cylindrical cam 42 is in a non-rotating state because the retractable shaft 39 is connected to the auxiliary shaft 39a by the cam follower 40, and the passive protrusion 45 of the detection lever 43 is always in a fixed direction.
Normally, it is in the retracted position due to the right f force of the spring 41, but it is moved in and out at a constant cycle by the rotation of the plate cam 37 when the sorting roller 7.8 is driven, and when it advances, the end face The cam 42a acts on the detection lever 43 in the hanging position, rotates it close to the detection position shown in the figure, and partially releases it.
The detectable state is automatically obtained. Note that when the detection lever 43 is in the detection position, even if the cylindrical cam 42 is advanced, it is detached from the end cam 42a and is not affected by it, so that the movement of the cylindrical cam 42 back and forth during document feeding does not pose a problem.

Furthermore, as shown in FIG. 4 and FIG. A rotating shaft 51 having an operating lever 55 is provided at the upper part of the intermediate part, and this rotating shaft 51
An engagement shaft 54 protruding from both sides of the circulation unit 10 is engaged with a long hole 53 of a rotation lever 52 attached to the rotation lever 52 . As a result, by rotating the rotary shaft 51 with its operating lever 55, the circulation unit 10 can be moved diagonally upward to the retracted position via the rotary lever 52, and returned to the operating position.

As shown in FIG. 6, the book carrier 21 is movably guided by a guide rail 60, and an endless chino 61 is stretched along one side of the moving path and is attached at one location. A retaining pin 62 is engaged with a retaining member 63 fixed to the end of one side of the book carrier 21. The endless chino 61 is stretched between a driving sprocket 64 and a driven sprocket 65 which are in a fixed position, and the driving sprocket 64 is connected to a driving gear 67 via a spring clutch portion 66. Spring clutch part 66
When the ratchet wheel 66a is locked by a locking pawl 69 operated by the solenoid 6B, it is turned on and the drive gear 67 is engaged with the drive sprocket 64. The drive gear 67 is interlocked with a drive pinion 72 driven by a drive motor 71 via a timing heald 70 .

As shown in FIG. 7, a manual feed table 75 is connected to the book carrier 21 via a link 74 that is movably supported along a guide groove 73 formed on the inner surface of the book carrier 21. As shown in FIG. 8, when copying wood or the like, it is possible to support a surface other than the copying surface of a book in a double-page spread state. The manual feeding table 75
A hack sheet 7 is provided on the bottom side of the
7 is provided, and as shown in FIG. 9, it can also be used as a document holder for holding down a wooden or thick document on the document glass 4 from two parts.

Furthermore, the book carrier 21 uses the peripheral walls 75b on three sides of the manual feed table 75 excluding the slots 75a to form recesses 75c in the shape of a mouth when viewed from above. Original holding sheet 8
1 and its winding mechanism 82 are provided.

The original holding sheet 81 is flexible and is adapted to be wound around a winding shaft 96 horizontally disposed within the recess 75c using a frame 95 as shown in FIGS. 6 and 10. A driving pulley 84 is attached to one end of the winding shaft 96 facing into one end of a frame portion formed by the frame 83 . A portion of an endless wire 86 stretched between the drive pulley 84 and an idling pulley 85 provided in the other end of the frame 82 on the opposite side is wound around the drive pulley 84 . Another wire 87 is connected to this endless wire 86 to urge it in one direction, that is, in a direction that rotates the take-up shaft 96 in the winding direction via the drive pulley 84, so that the document holding sheet 81 is constantly wound. It has become.

One end 87a of the wire 87 is connected to a locking claw 95a of the frame 95.
The other end 87b is connected to the connecting plate 88 of the endless wire 8G, and the other end 87b is connected to another pulley 89 coaxially with the idling boob IJ85 and a movable pulley 90 movably held by the frame 82, which meander in sequence. By turning the hook in the same manner and biasing the movable pulley 90 in one direction by the spring 91, an urging force lj in the winding direction is applied to the endless wire 86.

The movable pulley 90 has a pin 96 in the long hole 95h of the frame 95.
It is movable by being attached to a movable table 92 that is held and guided through.

When using the book carrier 21, pull out the original holding sheet 81 as shown by the imaginary line in FIG. When the document holding sheet 81 is held in the desired drawer position by stopping the document holding sheet 81, the document holding sheet 81 is tensed by the winding position in which it is held, and the document placed on the document glass 4'' under the drawing sheet of the document holding sheet 81 is pulled out. You can hold it down. As a result, even originals with raised textures such as those made of wood can be held in close contact with the original glass 4, and an appropriate background such as a white background can be provided.

Next, the operation of the above configuration will be explained.

First, the basic operation when copying a sheet-like original will be explained. The operator adjusts the position of the size regulation guide members 24 and 25 according to the document size, sets the copy document in the tray 3 with the document side facing "-", enters the number of copies on the operation panel, and prints. Turn on the switch. Then, the lowest document is fed one by one by the paper feeding roller 6 and the sorting roller 7.8 at the front end of the tray 3, passes through the U-tartzer 41 member 9, hits the timing roller 17, and the leading edge of the document is stopped. As a result, the leading edge of the document is aligned with the timing roller 17 in a looped state, and skew feeding is prevented. Next, after a certain set time has elapsed, the timing roller]
7 is driven, and the original is sent onto the original glass 4. At this time, the circulation unit 10 is pressed against the document glass 4 by a spring force, and its belt 13 is constantly driven clockwise, allowing the document to pass through the reading position without floating or unevenness. .

On the other hand, the copying machine main body 1 is driven by turning on the printer I switch, the photoconductor drum 1c rotates in the counterclockwise direction, and after a potential is uniformly applied thereon by the charging section IJ at a set timing, the photoconductor drum 1c is read. The image of the document passing through the position is exposed to slit light to form an electrostatic latent image. It is better to use a fluorescent lamp instead of a halogen lamp for the slit exposure light 'IR'a, since it is better to use the original glass 4 and other /
It is advantageous because the increase in crystallinity is small. The latent image formed on the photosensitive drum 1c is visualized by a developing device rf'Id. Further, the transfer paper is sent to the transfer section 1e in synchronization with the original from the paper feed section 1f or 1n selected in advance, and the developed image formed on the photosensitive drum 1cm1- is transferred by the transfer section 1e, and then 8 thermally fixed at 1g: discharged by discharge section]h.

The original that has passed through the reading position is peeled off from the original glass 4 by the I and II 1Fill claws +4a at the tip of the return path member 14, and in the mode using the first circulation path 5, the original is separated from the switching claw 1B by the return path member j4 and the switch. It passes through the claw 19, the return guide member 16, and the delivery roller 99, and is returned into the trays 1 to 3.

As soon as the handling rollers 7.8 begin to rotate, the kidney empty detection device 36 detects the cylindrical cam 42 as the temporary cam 37 rotates.
When the detection lever 43 is moved forward and backward and the detection lever 43 is in a hanging position, it is rotated when first advanced so that the tip end 43a of the detection lever 43 is placed on the document stored in the tray 3. Therefore, when multiple originals are stored in tray 3, the copied originals that are first copied and returned to tray 3 are stacked on top of the uncopied originals; It will be placed on top of the tip portion 43a that is still placed on the tip 1-. Also, the timing for sequentially copying multiple originals is 10 to 20 minutes after the trailing edge of the previous original is detected.
It is set to leave an arbitrarily set interval of 0 mm.

When the first set top original is fed from the tray 3, the detection layer 43 placed on top of it rotates clockwise due to its own weight and assumes a hanging position, which is detected by the photosensor 47. As a result, an empty signal indicating that the initially set original has completed one cycle is generated.

In the case of one-sheet copying, this signal becomes the final copying signal and is used to stop the automatic document feeder 2 after the final copying. In this case, the hanging state of the detection lever 43 is maintained until the print switch is turned on again and the sorting roller 7 rotates.

However, if you only need to copy one sheet of a plurality of originals, the switching type 1
8, all originals are ejected to the original ejection tray 20, and the tray 3 becomes empty, so that the next original can be set immediately.

When copying a plurality of originals one by one using this first circulation path 5, the empty signal becomes a signal indicating that one copying of each original is completed, and it corresponds to the predetermined number of copies. The same copying operation as described above is repeated until the number of copies is counted, and a predetermined number of copies are automatically achieved.

In this case, the copies to be ejected are one for each original document, and one copy is ejected from the paper ejection tray II! The blocks are stacked one after another in sequence, and the blocks are piled up in a so-called page-aligned state in which each type of block is stacked in the same order as the original. This is the same as sorting without partitions between each block. Therefore, it is convenient to set a mode in which multiple copies are made using the first circulation path 5 by selecting the sorting mode.

The second circulation path 22 can also be used to copy a plurality of originals one by one. In this mode, the original is fed from tray 3 and passed through the reading position.
The document is fed into the circulation unit 10 by the first switching die 18, and is circulated a set number of times in the second circulation path formed by the circulation unit 10 and the document glass 4, while copying is performed.

=23~ At this time, the number of passages of the original is detected by the detection switch provided in the circulation unit 10. Number of passes is N-1
(where N is the set number of copies), the first switching type 1
8 counterclockwise and switched again to the return path member 14 side, the original that has passed through the reading position for final copying returns to the tray 3 in the same manner as in the sorting mode. Then, after a predetermined period of time has elapsed since N-1 passes have been detected, feeding of the next original is started. Note that since the document circulated in the second circulation path 22 has both side edges regulated by the skew prevention member 30, the document will not be skewed no matter how many times it is circulated. In addition, the first switching type 1
8 is adapted to be lightly pressed against the belt 13, so that even if the rear end of the document is held between the belt 13 and this first switching mold 18, there is no support for feeding the document. .

When a plurality of copies are made from a plurality of original documents using the second circulation path 22, the copies that are discharged are piled up as one block, each of which belongs to the same original. This can be said to be a grooving state, although there is no partition between each block. Therefore, it is convenient to set a mode in which multiple copies are made using the second circulation route 22 by selecting the grouping mode.

Next, a case will be described in which a non-standard original that cannot be set in the tray 3 is to be copied. In this case, the manual feed table 75 is used and the document is inserted along the manual feed table 75 with the document surface facing downward. At this time, the manual feed detection switch is turned on to detect the manual feed mode, and the timing roller 17 is turned on for a very short time to grip the leading edge of the document. When the print switch is turned on in this state, the timing roller F is driven in accordance with the feeding timing of the transfer paper, and the document is sent to the reading position.

In the manual feed mode, it is impossible to predict what size of document will be passed through, so the first switching mold 18 and the second switching mold 19 are switched to a counterclockwise position, and the document passing through the reading position is rotated counterclockwise. is discharged to the document discharge tray 20 through the return path member 14. Note that if there is a sufficient distance between the manual feed detection switch and the second switching claw ]9,
The length of the document is detected based on the length of the ON state of the manual feed detection switch, and if the length is less than the specified length that can be accommodated in tray 3, the document is ejected into tray 3, and if it is longer than that, the document is ejected to document output tray 20. Good too. Furthermore, even if the original length is longer than the specified length, if there is no original in the tray 3, the original is returned to the trays 1 to 3 and circulated through the tray 3, thereby making it possible to make multiple copies.

Next, the case of copying a book or a thick original (hereinafter referred to as an original) will be described. In this case, first, operate lever 5.
When the mode is switched by rotating 5 clockwise, circulation unit 0 retracts to the diagonally upper retracted position. Also,
The regulation hook that was regulating the position of Book Carrier 2I (
(not shown) is removed and becomes freely movable. Here, the operator pulls out the book carrier 21 to the outside of the automatic document feeder 2, sets the document on the document glass 4, and presses the document with the document presser sheet 81 as needed.

Next, after setting the number of copies and selecting the transfer paper size, etc., the print switch is turned on. Then, solenoid 6
At step 8, the locking pawl 69 locks the ratchet wheel 66a of the spring clutch section 66, turning on the clutch section 66 and driving the drive sprocket 64. As a result, the book carrier 21 starts scanning.

When this is detected by a detection switch (not shown) at a predetermined position, transfer paper is fed at the same timing and copies are made in the same manner as above. Book carrier 2 for single copy
Detection switch (not shown) when 1 reaches the specified position
is activated, the solenoid 68 is turned off, and the motor stops at that position.

In the case of multiple copies, the scanner scans multiple times and stops at the designated position in the same way. Thereafter, the document is taken out, and the book carrier 21 is inserted until it hits the regulating member in the automatic document feeder 2, and is fixed by the regulating hook. By rotating the operating lever 55 in the counterclockwise direction, the circulation unit 10 is returned to its initial state.

When scanning with the book carrier 21, although the circulation unit 10 is retracted, there is a height restriction depending on the retraction height of the circulation unit 0, etc.

For this reason, a height detection switch (not shown) is placed in the input section of the automatic document feeder 2 to detect the abnormality and immediately release the locking by the locking pawl 69 of the spring clutch section 66 to start scanning. It has been stopped.

In this embodiment, the circulation unit 10 includes a pair of rollers 11, 12 and a belt 13, but
A roller may be used to guide the document instead of a heddle, a single drum or roller may be used instead of a pair of rollers, and the leading edge of the document may be chunked instead of being pinched and transported. It may also be transported.

Although the book carrier 21 is shown as being built into the automatic document feeder 2, this need not necessarily be the case, and the book carrier 21 may be used in combination in a separable manner.

(Effects of the Invention) According to the present invention, since it has the above-mentioned configuration and operation, it is possible to automatically feed a manually fed document using a manual feeding table connected to a book carrier, and when panning a thick document, one side of the document can be easily fed by 100%. Even if the book protrudes from the book carrier, the protruding part can be supported by the manual feed table, eliminating the trouble and danger of supporting it by hand. In addition, the book carrier is equipped with a book carrier that can hold both books and thick originals as well as thin originals that are automatically fed by the automatic document feeding means.
It is possible to use two document glasses in common for panning scanning scanning using the same exposure optical system with the same exposure, which simplifies the document support structure, and because the exposure optical path length is always constant, the exposure optical system and control system It also becomes easier.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional front view showing the overall configuration of a copying machine according to an embodiment of the present invention, Fig. 2 is a longitudinal sectional front view of the automatic document feeder, and Fig. 3 is a longitudinal sectional front view of the same side regulating member and empty detection device. 4 is a perspective view showing the evacuation mechanism of the circulation unit, FIG. 5 is a perspective view of the external appearance, FIG. 6 is a perspective view showing the book carrier and its drive mechanism, and FIGS. 7 to 9 10 is a longitudinal sectional front view showing various states of use of the book carrier, and FIG. 10 is a perspective view showing a winding mechanism for a document holding sheet.

Claims (1)

[Claims] (1) A book carrier having an original glass and on which a book or a thick original can be placed; a first scanning means for scanning and moving the book carrier; a means for feeding a thin original onto the original glass; An automatic document feeding device comprising: a second scanning device that scans and moves the document fed by the feeding device on a document glass; and a manual feed table connected to a book carrier.