JPH06250296A - Book original platen - Google Patents

Abstract

PURPOSE:To provide a book original platen capable of executing the stable image reading and paging scan of a book original. CONSTITUTION:An original platen 1 has a two-layer structure and the original platen 1 of the upper side is constituted so as to freely slide in the horizontal direction with respect to the upwards and downwards moving platen 5 of the lower side, to maintain a closely sticking state between the cover of the book original BO and the original placing surface of the original platen 1. The upwards and downwards moving platen 5 of the lower side is constituted so as to freely vertically move and the center 2 of the book original BO placed on the original platen 1 is kept constant. Each end part of the central side of the original platen 1 divided into two of the left and right are connected each other by a connecting member (rear supporting plate 14) and the rear cover of the book original BO placed on the original platen 1 is supported.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention makes the original surface of the main document face the scanning surface of a scanning unit for reading the original surface of the original document or turning a page. The present invention relates to a document table for placing.

[0002]

2. Description of the Related Art As a document reading device in a copying machine, a facsimile, etc., a sheet document is automatically conveyed to a document reading position to read document information, and the document which has been read is automatically discharged from the document reading position. An automatic document feeder (ADF) is known. Thus, when the document is a sheet document, the document information can be automatically read by mounting the ADF, but when the document is a main document, an automatic page turning mechanism is realized. However, at this stage, the pages of this manuscript can only be turned manually.
On the other hand, conventionally, various proposals have been made on methods and means for automating the time-consuming reading of a manuscript, but in these conventional techniques, there are many proposals only for ideas, and it has reached a level that can be realized. Not not.

In view of such a current situation, the present application, for example,
As disclosed in Japanese Patent Application No. 2-193589, etc.,
Between the document placing surface and the page-turning belt, while forming a bypass portion separated from the document placing surface on a part of the page-turning belt stretched along the document placing surface of the document placing table, A page turning reading unit (hereinafter referred to as a scanning unit) provided with a page storage means, a page suctioning means, a page separating means, a reading means, etc. is relatively moved with respect to the document surface of the book document which is opened and placed. By doing so, a page turning reading device for the book original has been proposed which performs the page turning of the book original and scanning for reading the book. According to the page-turning reading apparatus for the original document according to this proposal, as described in the above-mentioned specification and the like, the page-turning operation for the original document and the scanning for reading the original, which requires a great deal of labor for copying work, etc., are completely automated. Thus, it is possible to realize a multi-function original reading system that significantly improves productivity such as copying.

[0004]

By the way, in the page turning reading apparatus for the original document previously proposed by the present applicant, the placing surfaces of the left and right pages of the original document on the original placing table are on the same flat plane. It is formed so as to be located. For this reason,
In this page turning reader for a book document, when the height of the document surface of the book document opened on the document mounting table is different between the left and right pages, the document is read during image reading and page turning scanning of the scanning unit. Since a step is generated on the scanning surface and the scanning unit moves up and down at the step of the original document, there is a problem that the image reading operation and the page turning operation become unstable. Therefore, as described above, in the apparatus for performing image reading and page turning of the original document by moving the scanning unit relative to the document surface of the original document, in order to stabilize the image reading and page turning operation of the scanning unit. It is desirable that the height of the document surface of the original document, which is opened on the document placing table, be located on the same flat plane as the left and right pages. As described above, as a means for positioning the height of the document surface of the original document opened on the document table on the same flat plane on both the left and right pages, there is a conventional "seesaw" described in JP-A-61-184527. Type document support device "has been proposed. However, in this conventional "seesaw type document support device", the original surface of the opened original document is pressed against the flat glass plate from below to raise the height of the original surface of the opened original document. The left and right pages are located on the same flat plane. For this reason, when the document surface is scanned by the scanning unit using this apparatus, the image can be read only on the opened page of the original document, but there is an interposition between the scanning unit and the document surface. Since the glass plate that is used interferes with the automatic page-turning scanning of the main document, there is a disadvantage that the automatic page-turning scanning of the main document cannot be performed, which is a major feature of this type of apparatus. In addition, in this conventional "seesaw type document support device", since the document table cannot be moved in the left-right direction with respect to the vertical movement of the document table, the deviation between the cover of the original document and the document placement surface of the document table is caused. Occurs, and the original placement property becomes unstable. Further, in this conventional "seesaw type document supporting device", there is a problem that the center position of the placed original document is displaced due to the inclination of the seesaw of the document table. Further, in this conventional "seesaw type document supporting device", since there is no connecting member for connecting the end portions on the center side of the document plates divided into the left and right, the spine of the original document placed on these document tables is not provided. There is a gap in the corresponding position of the cover,
Positioning and placement of the bookbinding section becomes unstable.
As described above, it has been difficult to perform stable image reading and page-turning scanning of the main document on the document table in the conventional apparatus of this type. The present invention has been made in view of the above points, and an object thereof is to provide a book manuscript table capable of performing stable image reading and page-turning scanning of the book manuscript.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a method for reading the document surface of a document or turning a page of a scanning unit for turning a page of the document. A main document table for placing the main document with the document surfaces facing each other, and the document table has a two-layer structure.

In order to solve the above-mentioned problems, the first manuscript table on the upper side of the manuscript table is arranged slidably in the horizontal direction with respect to the second manuscript table on the lower side of the manuscript table. It is set up.

Further, in order to solve the above-mentioned problems, the second document table below the document table is arranged so as to be vertically movable.

Further, in order to solve the above-mentioned problems, the document surface of the original document is made to face the scanning surface of a scanning unit for reading the document surface of the original document or turning a page. A book manuscript table on which a book manuscript is placed. The manuscript table is divided into two left and right manuscript tables, and respective end portions on the center side of these manuscript tables are connected to each other by a connecting member.

[0009]

According to the present invention, the first manuscript table on the upper side of the manuscript table is provided with respect to the second manuscript table on the lower side of the manuscript table.
By sliding in the horizontal direction, the close contact state between the cover of the original document and the document placement surface of the document table is always maintained. Further, the second document table on the lower side of the document table is moved up and down in the vertical direction so that the central position of the original document placed on the document table is always constant. Further, the back cover of the original document placed on the document table is supported by the connecting member that connects the respective end portions on the center side of the document table divided into two parts on the left and right.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. However, in order to avoid complication, the description of the configuration, operation, and the like within the range that can be clearly recalled from the description of the present specification is omitted or simplified. Further, here, a scanning unit in which both the above-mentioned page turning means and image reading means are incorporated into one unit,
This embodiment is a book manuscript table in a book manuscript reading device for turning pages of a book manuscript and reading an image. This book-turning reading apparatus for book documents has, in principle, substantially the same function as the page-turning reading apparatus for book documents proposed by the present applicant.

First, the structure of the scanner unit 30 in this embodiment will be described. FIG. 1 shows the TPS of the present invention.
The whole block diagram of (Turn the Page Scanner; page turning reader) is shown. The upper half of the main body of the TPS device is the scanner unit 30, and the scanning unit 200 is the scanner unit 30.
1 in the horizontal direction in FIG. 1 to closely scan the document surface of the main document BO which is opened and placed on the document table 1, thereby performing page turning and image reading of the document surface of the main document BO. Scan.

In FIG. 1, the scanning unit 200 includes document pressing rollers 281a and 281b on the left and right sides of the lower side of the scanning unit 200, and sheet winding rollers 280a and 280b on the outside thereof, which are rotatably supported. It is supported. Each sheet winding roller 280a, 2
The left and right independent document holding sheets 282a,
Each of the ends of the 82b on the center side is wound up,
The respective outer ends of the document pressing sheets 282a and 282b are fixed to the side plates of the scanner unit 30, respectively.

Further, the document pressing rollers 281a, 281 are also provided.
A platen glass 205 for reading the original document is provided between b.
And a turning belt 208 for turning the pages of the original document. Inside the platen glass 205, two fluorescent lamps 201 and 202 for illuminating the original document are arranged on the left and right sides of the original document reading unit, respectively. The original document image illuminated by these fluorescent lamps 201 and 202 is reflected by the first mirror 219 in FIG.
20 and the third mirror 221 are alternately reflected, finally transmitted through the lens 216, and reduced and imaged on the CCD 101.

On the other hand, the turning belt 208 is stretched over the turning belt drive roller 223 and the turning roller 224.
The charging roller 225 is arranged in contact with it.

Further, in the TPS of this embodiment, a contact glass 206 is arranged on the upper part of the main body of the apparatus, and a document SO such as a sheet or a thick original document is placed on the contact glass 206 by a pressure plate (not shown). Set,
The original image on the contact glass 206 can be read by scanning the original with the scanning unit 200 whose optical path has been switched.

The document table unit 3 in this embodiment will be described below.
The configuration of No. 5 will be described. The document table 1 of the embodiment shown in FIGS. 2 to 4 is formed of a resin plate having a thickness of 2 mm, and a material having a high friction coefficient such as extremely thin rubber is attached to the upper surface of the plate. There is. This high coefficient of friction material
By laminating, coating and spraying,
It may be formed on the upper surface of the document table 1. The document table 1 according to the present embodiment has a document placement surface (upper surface) formed to have an A4 size, and is provided on the left and right of the center 2 of the apparatus main body, respectively. A slide plate 3 is fixed under each document table 1.

On the other hand, the lower surface of the slide plate 3 is in contact with the upper surface of the upper and lower bases 5 having a low friction coefficient. Here, a rib of resin such as Teflon is formed on the upper surface of the upper and lower base 5,
It can move to the left and right smoothly with the slide plate 3. Further, the slide plate 3 and the upper and lower base 5 are relatively fixed by a size stopper 27 described later. On the lower side of the upper and lower pedestal 5, angles 7a and 7b with long holes in the left and right direction are provided at four front, rear, left and right positions. To the base 6 of this document table unit, another angle 8 having a fixed rotation axis and yet another angle 9 having a left-right elongated hole are fixed. Here, the link plate 10 is attached to the angles 8 and 7b, and the link arm 1 is attached to the angles 9 and 7a.
1 is rotatably supported, and the link plate 10 and the link arm 11 are slidable in the left-right direction with respect to the angles 7a, 7a, 9 respectively. Further, when viewed from the entire surface of the document table unit, the two arm plates 10 and the link arms 11 on the front and rear sides are rotatably supported by studs 12 at X-shaped intersecting portions. Also, this stud 1
2 with the torsion center as the torsion center,
2 and the link arm 11, the torsion spring 13 exerts a force that constantly pushes the upper and lower bases 5 upward in FIG. The raising of the upper / lower table 5 due to this raising force is regulated by the contact of the document surface of the original document set on the document table unit 35 with the scanning unit 200 whose vertical movement is regulated as described later. As a result, the pressure applied to the scanner unit 30 is maintained substantially constant regardless of the difference in the thickness of the original document.

The ends of the upper and lower pedestals 5 on the left and right sides of the apparatus main body 2 are connected to each other by a back support plate 14. The back support plate 14 is made of an elastically deformable material such as rubber, and the original document BO is placed on the back support plate 14.
The spine of is set. The back support plate 14 is constantly tensioned in the left-right direction by the action of a tension spring 17 described later. That is, the upper and lower bases 5 are provided with the hooks 15, and the hooks 15 and the link plate 1 are
By connecting the angle 16 of 0 with the tension spring 17, the pair of left and right upper and lower pedestals 5 are pulled in a direction in which they are separated from each other. As a result, tension is constantly applied to the spine support plate 14 and the spine cover of this document is supported without slack.

On both sides of the base 6, side plates 1 made of sheet metal are provided.
8 is fixed, and each side plate 18 has a fixing pin 19 on which an opening / closing lock claw 32 of a scanner unit 30 described later is hooked.
Is attached. Further, a leaf spring 21 for pushing up the scanner unit 30 when the scanner unit 30 is closed and an opening / closing lock sensor 20 for detecting the closed state of the scanner unit 30 are attached to one side plate 18. There is.

Next, the size stopper 27 will be described. The size stopper 27 adjusts the distance between the left and right manuscript tables 1 in accordance with the thickness of the original manuscript to be placed, and fixes the slide plate 3 (manuscript table 1) and the upper and lower table 5 relatively to each other. This is a device for allowing the base 1 and the upper and lower bases 5 to move integrally with each other. 5 and 6 are schematic configuration diagrams of this device. As shown in FIG. 3, a pair of angles 22 are attached to the lower side of the upper and lower pedestal 5 at predetermined intervals.
As shown in FIG. 5, rods 23 are horizontally mounted and fixed to these angles 22. A sliding body 24 is mounted on the rod 23 so that it can slide smoothly in the longitudinal direction of the rod 23 through its through hole. A short shaft 26 is planted in the sliding body 24 so as to be orthogonal to the rod 23, and a stopper 25 is rotatably supported on the short shaft 26. Here, the stopper 25 is extended so that the locking hole 25a formed at one end thereof is loosely fitted to the rod 23 and the other end thereof can be grasped by a finger.

The slide body 24 is fixed at an arbitrary position on the rod 23 by the stopper 25 tilting with respect to the rod 23 and the rod 23 and the locking hole 25a of the stopper 25 meshing with each other. That is, in the sliding body 24, the stopper 25 is normally tilted by the locking spring 28,
The rod 23 and the stopper 25 are integrally fixed to the rod 23, but in FIG. 6, the operator rotates the extended end portion of the stopper 25 with a finger in a direction against the elasticity of the locking spring 28. By doing so, the engagement between the rod 23 and the locking hole 25a of the stopper 25 is disengaged, and the rod 23 and the stopper 25 can move along the rod 23. The sliding body 24 is fixed to the slide plate 3 (FIG. 3). Therefore, as described above, by fixing the slide body 24 to the predetermined position of the rod 23, the slide plate 3 (original table 1) and the upper and lower table 5 are connected via the slide body 24 and the rod 23. It can be fixed at any relative position.

Next, the open / close lock mechanism of the document table unit 35 will be described. A schematic configuration diagram of this open / close lock mechanism is shown in FIGS. As shown in FIGS. 7 and 8, the TPS of this embodiment has a configuration in which a scanner unit 30 is placed on a document table unit 35. Both units 30 and 35 are connected to each other by a hinge 36 arranged on the rear side of the TPS, and have a shell-type opening / closing structure in which the front side of the TPS is opened. The open / close lock mechanism of the document table unit in the TPS is arranged in front of both units 30, 35. As mentioned above, the side plate 18 is provided with the fixing pin 19. Also,
As shown in FIG. 7, on the scanner unit 30 side, a shaft 31 is rotatably supported across the left and right side plates, and open / close lock claws 32 fixed to both ends of the shaft 31 are provided on the shaft 31. It is designed to rotate according to the rotation. Also, near the center of the shaft 31,
The open / close lever 33 is fixed, and the open / close lever 33 is fixed.
By rotating, the opening / closing lock claws 32 are engaged and disengaged with the fixing pins 19 on the document table unit 35 side via the shaft 31. A spring 34 is hooked on the opening / closing lever 33, and the spring 34 urges the opening / closing lever 33 in a direction in which the opening / closing lock claw 32 is engaged (locked) with the fixed pin 19.
As a result, in the state where the scanner unit 30 is closed as shown in FIG. 7, the open / close lock claw 32 engages with the fixed pin 19 and is locked with respect to the document table unit 35. Further, in this closed state, by lifting the opening / closing lever 33 against the urging force of the spring 34, the shaft 31 rotates and the fixing pin 19 on the document table unit 35 side is rotated.
Each of the open / close lock claws 32 is removed from the scanner unit 30, the scanner unit 30 opens upward with the hinge 36 as the center of rotation, and the upper portion of the document table unit 35 (document table 1) is opened, as shown in FIG.

Next, the document platen pressure fixing switching device and the document platen retracting device of this embodiment will be described. As described above, the document spring 1 configured to be movable in the vertical direction by the link plate 10 and the link arm 11 is always biased by the torsion spring 13 so as to be lifted. As a result, when the scanner unit 30 is closed with respect to the document table unit 35, the document table 1
Due to the ascending habit, the document surface of the main document BO that is opened and placed on the document table 1 is constantly pressed upward so as to be pressed against the lower portion of the scanner unit 30. The pressing force applied to the original surface of the original document BO is usually the scanner unit 30.
Although the scanning unit 200 inside the scanning unit 200 receives the scanning unit 200, when the scanning unit 200 is moved to a position on the original platen 1 that is out of the original document, the original platen 1 is moved due to the rising tendency of the original platen 1.
Also, the original document BO bites into the scanner unit 30, which hinders the smooth movement of the scanning unit 200. Therefore, in the present embodiment, with the original table 1 raised to an appropriate position, the original table 1 is fixed, and the original table 1 and the main document BO are moved into the scanner unit 30 due to the rising habit of the original table 1. It is necessary to prevent excessive bite. Further, as will be described later, when the scanning optical path in the scanning unit 200 is switched to read the original on the contact glass 206 arranged above the scanner unit 30, the lower portion of the scanning unit 200 and the upper surface of the original table 1 come into contact with each other. In order not to do so, it is necessary to retract the document table 1 below the document table unit 35. The platen pressurizing / fixing switching device and the document platen retracting device are devices for solving these problems, and a configuration example of a mechanism in which both of these devices are combined by one mechanism is shown in FIGS. Show. The control wire 40, which is one of the components of this mechanism, has the structure shown in FIG.
, A hook 41 is fixed to one end thereof, another hook 42 is fixed to the other end thereof, and a spherical stopper ball 45 is fixed to the vicinity of the substantially central portion thereof. Hook 41
Is fixed to the outer end of the link plate 10 (the side that moves up and down as the document table 1 moves up and down). The control wire 40 extending from the hook 41 changes its direction via a pulley 46 and a pulley 47, and is wound around a control pulley 48. Here, as shown in FIGS. 10 and 11, the control wire 40 is guided to the groove 50 of the control pulley 48, and the stop ball 45 fixed near the center thereof is fitted into the stop hole 49 of the control pulley 48. Has been. This ensures that the movement of the control wire 40 is converted into the rotational movement of the control pulley 48. The control wire 40 wound and extended on the control pulley 48 is constantly pulled by one end of a tension spring 43 hung on a hook 42 at one end thereof. The other end of the tension spring 43 is hooked on a hook 44 fixed to the base 6 of the document table unit 35.

The control pulley 48, as shown in FIG.
It is supported by the shaft 54 via the one-way clutch 51. The shaft 54 is supported by a pair of side plates 55 on a slide bearing 52, and both ends of the shaft 54 are prevented from coming off by E-rings 53, so that the side plate 5 is interposed via the slide bearing 52.
It is rotatably supported with respect to 5. As a result, the control pulley 48 moves the arrow a in FIG.
Although the shaft 54 can freely rotate in the direction, it cannot rotate relative to the shaft 54 in the direction opposite to the arrow a by the action of the one-way clutch 51.
Rotates together with. Therefore, when the shaft 54 is fixed by the mechanism described later, the control pulley 48 becomes rotatable only in the direction of arrow a in FIG. 9, that is, in the rotation direction when the document table 1 is lowered.

Next, the lowering / fixing operation of the original platen 1 by the original platen pressurizing / fixing switching device will be described. Figure 9
11 to 11, when the shaft 54 is in a fixed state, when the original platen 1 is pushed down by some external force, for example, the weight of the original document BO or the pressure applied by the turned pages, the original platen 1 is pushed down. The hook 41 of the control wire 40 fixed to the crocodile loosens at the end of the crocodile. At the same time, the control pulley 48 is pulled by the tension spring 43, and the hook 41 of the control wire 40 rotates in the direction of the arrow a while absorbing the looseness of the thread, and the control wire 40 maintains the initial tension. The hook 44 moves to the alligator. At this time, the control pulley 48 moves by the action of the one-way clutch 51.
Since it cannot rotate in the direction opposite to the arrow a, even if the raising force of the document table 1 exceeds the pressing force against the document table 1, the control pulley 48 moves in the opposite direction of the arrow a due to the raising force of the document table 1. However, the control pulley 48 is stopped while maintaining the position rotated in the arrow a direction. Further, along with the stop of the control pulley 48, the movement of the control wire 40 is also stopped, whereby the document table 1 is lowered to a position where it is pushed down by an external force and then stopped.

Here, the fixing of the shaft 54 is performed by a document table lifting mechanism described below. That is, as shown in FIG. 12, a gear 56 is fixed to the shaft 54 so as to rotate integrally with the shaft 54.
Further, as shown in FIG. 13, the gear 56 is provided with a side plate 55.
The gear 57 meshes with another gear 57 rotatably supported by a stud 59 fixed to, and the rotation is transmitted to the gear 57. Further, the gear 57 is integrally formed with the worm wheel 58, and the worm wheel 58 is configured to mesh with the worm gear 60 fixed to the output shaft of the document table lifting motor 61. With this configuration, when the platen raising / lowering motor 61 is stopped, the worm wheel 60 cannot rotate due to the engagement of the worm gear 60 and the worm wheel 58, and the gear 5 integrated with the worm wheel 58 is not able to rotate.
The shaft 54 connected through the gear 56 meshing with the shaft 7 is fixed.

Next, the operation of retracting the original table 1 to the lower side of the original table unit 35 will be described. In FIG. 12 to FIG. 13, when the platen raising / lowering motor 61 is driven so that the gear 56 rotates in the direction of arrow b, the one-way clutch 51
As a result, the control pulley 48 and the shaft 54 rotate as a unit, the control pulley 48 rotates in the direction of arrow a in FIG. 9, and the control wire 40 moves the hook 44 to the burr. Due to the movement of the control wire 40, in FIG.
The left and right manuscript tables 1 are lowered, and the upper surface of each manuscript table 1 (the manuscript surface of the main document BO in this embodiment) is retracted to a position below the manuscript table unit 35, which is separated from the scanning unit 200. This retracting operation is executed when the power of the apparatus main body is turned on, when the apparatus is in a standby state in which scanning is not performed, and when an original document on the contact glass 206 arranged above the scanner unit 30 is read.

[0028]

According to the present invention, stable image reading or page turning can be performed.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing an overall configuration of a device body in a TPS according to an embodiment of the present invention.

FIG. 2 is a schematic side view of a document table unit in the TPS.

FIG. 3 is a schematic plan view of a book placement table in the TPS.

FIG. 4 is a schematic plan view of a document table unit in the TPS.

FIG. 5 is a schematic perspective view of a size stopper that positions the left and right document tables in the document table unit according to the size of the original document.

FIG. 6 is a schematic plan view of the size stopper.

FIG. 7 is a schematic perspective view of a unit opening / closing lock mechanism for opening / closing a scanner unit with respect to the original table unit of the TPS.

FIG. 8 is a schematic side view of the unit opening / closing lock mechanism.

FIG. 9 is a schematic perspective view of a document table pressure fixing switching device in the document table unit.

FIG. 10 is a schematic cross-sectional view of the platen pressurization / fixing switching device.

FIG. 11 is a perspective view of a component of the platen pressurization fixing switching device.

FIG. 12 is a schematic perspective view of a drive unit of the platen pressurization fixing switching device.

FIG. 13 is a schematic plan view of the platen pressurization fixing switching device.

[Explanation of symbols]

 1 Document Plate 2 Device Center 3 Slide Plate 5 Vertical Plate 6 Base 7a, 7b, 8, 9, 16 Angle 10 Link Plate 11 Link Arm 12 Stud 13 Torsion Spring 14 Back Support Plate 17 Pull Spring 30 Scanner Unit 35 Document Plate Unit 40 wire 41, 42, 44 hook 43 tension spring 45 stop ball 46, 47 pulley 48 control pulley 49 stop hole 50 groove 51 one-way clutch 52 sliding bearing 56, 57 gear 58 worm wheel 60 worm gear 61 original plate lifting motor 200 scanning unit BO main document BOa binding part of the main document

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kazushige Taguchi Kagoshi Taguchi 1-3-3 Nakamagome, Ota-ku, Tokyo, Ricoh Co., Ltd. (72) Masaru Shiina 1-3-3 Nakamagome, Ota-ku, Tokyo Issue / Stock Company Ricoh

Claims (4)

[Claims] 1. A book for placing the original document such that the original surface of the original document faces a scanning surface of a scanning unit for reading the original surface of the original document or turning a page. A document table, wherein the document table has a two-layer structure. 2. A first manuscript table above the manuscript table is horizontally slidably arranged with respect to a second manuscript table below the manuscript table. The manuscript table described in 1. 3. The book manuscript table according to claim 1, wherein a second manuscript table below the manuscript table is arranged so as to be vertically movable. 4. A book for placing the original document such that the original surface of the original document faces the scanning surface of a scanning unit for reading the original surface of the original document or turning a page. A manuscript table, which is characterized in that the manuscript table is divided into two manuscript tables, a left manuscript table and a left manuscript table, and respective central end portions of the manuscript table are connected to each other by a connecting member.