JP3397784B2 - Book manuscript page turning device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a book manuscript page turning apparatus such as a copying machine or a facsimile having a book manuscript page turning function.

(Prior 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 a document that has been read is automatically ejected from the document reading position. An automatic document feeder (ADF) is known.

In this way, when the original is a sheet original, the ADF can be installed to automatically read the original information. However, when the original is a book original, an automatic page turning mechanism is realized. However, at this stage, the pages of the book manuscript can only be turned manually.

Conventionally, in view of such a situation, various proposals have been made on methods and means for automating the troublesome reading of book originals.

However, the above-mentioned conventional technique has many proposals only for ideas, and has not yet reached the level at which it can be realized.

Examples of conventional techniques relating to the automatic reading of book originals include, for example, JP-A-61-284492, "Automatic page changing device for book-like originals", and JP-A-56-60294, "Book page turning device". JP-A-63-47197 "Automatic page turning device", JP-A-63-49743 "Document processing device", JP-A-63-50825 "Document processing device", JP-A-63-51192 Japanese Unexamined Patent Publication No. 63-41192, "Page turning device", Japanese Unexamined Patent Publication No. 63-42895 "Automatic page turning device", Japanese Utility Model Laid-Open No. 63-43141 "Document turning device", JP-A-63-67191 "Page turning device", JP-A-63-41588 "Book page breaker", JP-A-62-267196 "Safety device for page-turning device", JP-A-62-267196 JP-A-62-234462, "Image Scanner", JP-A-63-33738, "Copier", JP-A 62-273892 discloses "page turning device", such as JP 63-64797 "page turning apparatus" is proposed.

(Problems to be Solved by the Invention) By the way, as described above, among many proposals that do not go beyond the scope of the idea, for example, JP-A-61-284492 and JP-A-62-35891. Although there are proposals that can be put to practical use, such as the technology described in, this technology places the book document with the reading surface of the document information facing downward and opens it, then moves the book document. While adopting the method of sucking and separating the page.

However, like this device, when the spread book document is placed downward and the book document is moved,
Since the original surface of the book original rubs against the original placing surface due to its own weight, the page turning operation is unreliable.

Further, this conventional device has a problem that the structure of the page turning device is considerably large.

Among the above-mentioned conventional techniques, there is also a page-turning device configured to turn over the document information surface of a book document that has been opened and turn the page by negative pressure by suction such as a roller or an arm. The conventional page turning apparatus has a problem that it becomes a considerably large apparatus because the large page turning apparatus is configured to move in the upper space of the book document.

Also, with this type of page turning device for book manuscripts,
The page turning of the book original is performed by moving the page turning means with respect to the book original placed on the original placing surface.

Therefore, when the separated pages are conveyed to the reverse page side without being fixed as in the conventional device, there is a problem that the conveyance is not stable.

The present invention has been made in view of the above points,
The purpose is to insert the separated pages into the page turning unit that moves the pages of the book manuscript in the stacking direction,
(EN) A page turning device for a compact book manuscript capable of performing positive page turning by ejecting a page from the direction opposite to the insertion of the separated page on the page on which the separated pages are stacked. Especially.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention is to turn pages of a book document placed with the document surface facing upward in a direction along the document surface. In a page turning apparatus for book originals provided with a page turning means that is moved by moving in one direction substantially orthogonal to the binding portion of the book original, the page turning means is the topmost position of the book original when moving in the one direction. Means for adsorbing the page and separating it from other pages, a separating means for separating the page adsorbed by the adsorbing means from the adsorbing means in the movement in the one direction, and a page in the moving in the one direction. The page separated from the suction means by the separating means is stored by moving from the start of turning the sheet to the vicinity of the binding section, and is collected by the movement after the binding section. A page storage unit for discharging the stored same page is provided, and the page storage unit stores the separated pages in a state of being separated from the suction unit.

Further, in order to solve the above-mentioned problems, the present invention is the page turning apparatus for book documents according to claim 1, wherein the suction means sucks the uppermost page and conveys it toward the page storage section. It is a belt-shaped suction conveyance member, and has an electric field applying means for applying an unequal electric field to this suction conveyance member, and the suction conveyance member displays the top page by the unequal electric field applied by the electric field application means. It is configured to be adsorbed.

Further, in order to solve the above-mentioned problems, the present invention provides a page turning apparatus for book originals according to claim 2,
The plurality of rollers that support the suction conveyance member, and of the plurality of rollers, the portion of the roller that guides the uppermost page toward the page storage portion supports the suction conveyance member, It is configured as a means.

(Examples) Hereinafter, examples of the present invention will be described in detail with reference to the drawings.

However, for the sake of avoiding complication of the description, the illustration and disclosure of the configurations and operations within the scope that can be clearly recalled from the description of the present specification, and the above and other objects and novel features of the present invention are omitted. , Or simplify.

First, with reference to FIG. 1, a description will be given of a peripheral structure of a turning conveyance belt in a document reading apparatus according to the present invention.

FIG. 1 is a schematic sectional view of a multi-function document scanner A (hereinafter referred to as "MFDS") embodying the present invention.

In FIG. 1, the turning conveyance belt 8 is a drive roller.
12, tension roller 13, first belt support roller 97, second belt support roller 98, third belt support roller 99, fourth
Belt support roller 100 and fifth belt support roller 101
It is supported by.

At this time, the page-turning conveyor belt 8 is connected to the page-turning roller 2 of the page-turning reading unit 1, the first bias roller 3,
The page turning reading unit 1 is supported so as to surround the page turning reading unit 1 via the first roller 4, the second roller 5, and the pressing roller 6.

The tension roller 13 is pulled leftward in FIG. 1 by the belt tension spring 112,
Appropriate tension is applied to the turning conveyance belt 8 to press the document surface of the book document 92.

A belt tension sensor 32, which is a book document thickness detecting means and a belt tension detecting means, detects the tension of the turning conveyance belt 8 from the moving amount of the tension roller 13.

On the other hand, on the upper part of the transport section 19 of the MFDS, a sheet document tray 94 for setting the sheet document 200 and a sheet document 20 are set.
A sheet document side guide 93 for adjusting the setting position in the side direction of 0 and a sheet ejection tray 23 on which the ejected sheet document 200 is placed are respectively provided.

Further, a sheet document sensor 2 for detecting whether or not a sheet document 200 is set is provided on a sheet feeding section 21 (upper right in FIG. 1) of the MFDS.
5 and the sheet feed roller that feeds the sheet original 200 separately
A sheet feeding / separating pad 95 and a sheet feeding sensor 26 for timing the feeding of the sheet original 200 are arranged, and further, a first feeding guide 1 that constitutes a feeding path of the sheet original 200.
08 and the second transport guide 109 are arranged.

Further, a second bias roller 11 for charging when the sheet original 200 is conveyed is provided on the outer side of the turning conveyance belt 8 on the slightly left side of the belt support roller 97, and on the inner side thereof, a bias opposite roller for support. There are 102.

Further, at the lower end of the second transport guide 109, the transport guide claw 1
There is 15, which assists the conveyance of the sheet document 200.

Further, the fourth belt supporting roller 100 has a sixth facing roller 105, and the fifth belt supporting roller 101 has a seventh facing roller 10.
6, the drive roller 12 is provided with a paper discharge roller 107, which is arranged outside the turning and conveying belt 8 with the turning and conveying belt 8 interposed therebetween.

Further, a third conveyance guide 110 that constitutes a conveyance path for the sheet original 200 is disposed outside the turning conveyance belt 8 from the third belt support roller 99 to the drive roller 12.

Here, between the second belt supporting roller 98 and the third belt supporting roller 99, the document placing surface 116 on the upper surface of the document table 18 is provided.
Is used as a conveyance path for the sheet document 200.

This original document surface 116 is pre-scanned and book original 9
In order to make it easier to detect the leading edge of the book original 92 when detecting the size 2, the black original is formed.

On the other hand, in FIG.
A paper discharge sensor 28 is provided in front of the paper discharge roller 107 to detect the presence or absence of a jam when the sheet document 200 is discharged.

Further, a paper discharge separation claw 111 is formed below the paper discharge port 117 of the paper discharge unit 22 to assist the smooth discharge of the sheet original 200.

The document table 18 of the MFDS is provided with a fourth counter roller 103 below the second belt support roller 98 and a fifth counter roller 104 below the third belt support roller 99. When the 1 is at the home position 1-A, the first counter roller 15 is provided below the turning roller 2.
A second counter roller 16 is arranged below the pressing roller 6, and a second reading sensor unit 14 is arranged below the first reading sensor unit 9.

Further, when the page turning reading unit 1 is in the end position position (stop position of the page turning reading unit 1 in the reading mode of the sheet document 200) 1-C, the third side is provided below the first reading sensor unit 9. An opposed roller 17 and a book size upper limit sensor 33 are provided below the turning roller 2.

Further, at the center of the document placement surface 116, a central reference positioning portion 24 for determining the placement position of the book document 92 is formed.

In the central reference positioning portion 24, a central positioning plate 113 that contacts the spine of the book original 92 while the book original 92 is placed, and central positioning for giving the central positioning plate 113 a rising tendency. A spring 114 and a book document sensor 27 for detecting the downward displacement amount of the central positioning plate 113 when the book document 92 is placed are provided respectively.

A stand 91 for supporting the MFDS substantially horizontally is provided on the lower portion of the document table 18 thus configured.

On the other hand, on both sides of the part of the transport unit 19 that contacts the document table 18,
Conveyor Lock Device 140 Containing Conveyor Lock Sensor 31
Is provided and detects the open / closed state of the transport unit 19 and the document table 18.

As described above, this MFDS is configured as a document reading device that has both the automatic document feeding / reading function of the sheet document 200 and the book document reading and automatic page turning functions.

Next, the configuration of the drive system in this document reading apparatus will be described with reference to FIGS.

  FIG. 2 is a schematic cross-sectional view of the drive system of the MFDS.

  FIG. 3 is a schematic plan view of the drive system of the MFDS.

FIG. 4 is a perspective view of an end portion of the page turning reading unit 1.

2 to 4, the page turning reading unit 1 includes a scanning pipe of the turning unit drive plate 49.
The 51 is inserted into a pair of scanning rods 50 that are laid in parallel to the front side and the back side of the MFDS.
It is slidably supported in the left-right direction.

Each scanning rod 50 is mounted on the right side plate 58 of the MFDS transport section.
And the respective end portions are fixed to the left side plate 59 of the transport section.

Further, as shown in FIG. 3, a first shaft 64 and a second shaft 65 are provided between the transport unit front side plate 56 and the transport unit rear side plate 57.
And are rotatably supported respectively.

A drive pulley 62 and a driven pulley 63 are provided on the first shaft 64 and the second shaft 65 on the front side and the back side, respectively.
Each one is fixed and these drive pulleys
Two turnover unit drive belts 52 are suspended from each other, with 62 and the driven pulley 63 as a pair.

This page turning reading unit 1 is shown in FIGS.
As shown in the figure, at the drive belt fixing portion 53 of the turning unit drive plate 49, the drive belt fixing plate 54 and the drive belt fixing screw
It is fixed to the turning unit drive belt 52 by 55, and is driven by the turning of the turning unit drive belt 52.

Further, the first shaft 64 has a first gear 66 fixed to the rear side plate 57 of the transport section, with the rear plate 57 sandwiched therebetween.
The gear 66 meshes with the second gear 67 fixed to the output shaft of the turning unit drive motor 60, the rotation of the turning unit drive motor 60 is transmitted, and the drive pulley 62, the turning unit drive belt 52, the driven pulley 63, and The page turning reading units 1 are each driven.

On the other hand, as shown in FIG. 3, the fourth belt support roller 10
A third shaft 121 coaxially fixed to 0, a fourth shaft 122 coaxially fixed to the drive roller 12, a seventh shaft 125 coaxially fixed to the paper feeding roller 96, a first shaft 125 coaxially fixed to the first belt support roller 97. The 8-shaft 126 is rotatably supported between the transport unit front side plate 56 and the transport unit rear side plate 57.

A third gear 68 is fixed to the fourth shaft 122 on the back side of the fourth plate 122 while sandwiching the rear plate 57 of the transport unit.

The fourth gear 69 and the fifth gear 73 are coaxially fixed and rotatably supported.

Further, the sixth gear 74 fixed to the output shaft of the turning conveyance belt drive motor 61 is the fifth gear 73 and the fourth gear 69.
Are engaged with the third gear 68, respectively, and sequentially transmit the rotation of the turning conveyance belt drive motor 61 to drive the drive roller 12
Is driven to rotate the conveying belt 8.

Also, as shown in FIGS. 2 and 3, the eighth shaft
The second sheet feeding pulley 130 is provided on the back side of the rear plate 57 of the transport unit.
However, a first paper feed pulley 129 is fixed to the seventh shaft 125 on the back side of the rear plate 57 of the transport unit via a paper feed clutch 128, and the second paper feed pulley 130 and the first paper feed pulley 129 are provided. Pulley 1
A paper feed drive belt 127 is suspended on the sheet 29.

As a result, the rotation of the first belt support roller 97 rotated by the rotation of the turning conveyance belt 8 causes the rotation of the eighth shaft.
It is sequentially transmitted to 126, the second sheet feeding pulley 130, the sheet feeding drive belt 127, and the first sheet feeding pulley 129, and is transmitted to the input side of the sheet feeding clutch 128.

Further, the paper feed clutch 128 is actuated by the control signal sent from the main control board 310 (see FIG. 29), and the seventh shaft 125 and the paper feed roller 96 are driven.

On the other hand, the first opposed roller 15, the second opposed roller 16, and the third opposed roller 17 shown in FIG. 1 are synchronized with the turning conveyor belt 8 by the drive transmission mechanism (not shown) and have the same peripheral speed. Are driven by.

Next, the configuration of the page turning reading unit 1 will be described with reference to FIGS. 1 to 4.

1 to 4, the first turning unit side plate
40 and the second turning unit side plate 41 are arranged so as to face each other at a position sandwiching the turning conveyor belt 8, and between the first turning unit side plate 40 and the second turning unit side plate 41. , Turning roller 2, first bias roller 3, first roller 4, second roller 5, and pressing roller 6
Are rotatably supported.

The support structure of each of these rollers is the same.

Therefore, the first roller 4 will be described as an example. As shown in FIG. 5, the first roller 4 has a first turning unit side plate 40 and a second turning unit side plate 41, both ends of which are fixed to each other. 5 shaft 123 is inserted into the hollow portion of the first roller 4 formed of a hollow shaft, and both ends of the first roller 4 are supported by a pair of bearings 131 arranged on the fifth shaft 123. Thus, it is rotatably supported on the fifth shaft 123.

Here, the turning roller 2, the first bias roller 3, the first roller 4, the second roller 5, and the pressing roller 6 do not rotate by themselves, but are rotated only by the turning of the turning conveyance belt 8. .

Further, on the outer side of the first turning unit side plate 40 and the second turning unit side plate 41, a rotation support rod 42 is provided at an extension position in the longitudinal direction of the first reading sensor unit 9 shown in FIG.
(Both sides have the same structure) are rotatably supported.

Therefore, the support structure of only one side of the rotation support rod 42 will be described. As shown in FIG. 4, the rotation support rod 42 includes a sliding pipe 43, a second spring stop pawl 48, and an upper limit detection unit 76. It is configured integrally with.

In FIG. 4, the tilt correction spring 44 is formed of a torsion coil spring, one end of which is fixed to the rotation support rod 42 and the other end of which is fixed to the first turning unit side plate 40.

The inclination correction spring 44 is in its natural state, that is, in the state where no external force is applied to the inclination correction spring 44, the axial direction of the sliding pipe 43 (the vertical direction in FIG. 4) and the first reading sensor unit 9 are arranged. The optical axis direction of the reading optical system (the moving direction of the first reading sensor unit 9 with respect to the first turning unit side plate 40 and the second turning unit side plate 41 (described later in detail)) is matched.

As a result, when the first turning unit side plate 40 and the second turning unit side plate 41 are integrally rotated about the respective rotation support rods 42, the tilt correction spring
Due to 44, a rotational force for always returning the posture to the initial state acts on the first turning unit side plate 40 and the second turning unit side plate 41, and the first turning unit side plate 40 and the second turning unit. The inclination of the side plate 41 is corrected in a timely manner.

Further, the sliding pipe 43 is configured to slide smoothly on the sliding support rod 46, as shown in FIG.

The upper end of the sliding support rod 46 has an upper rod support plate 70.
Further, the lower end of the sliding support rod 46 is fixed to the lower rod support plate 71, respectively.

In addition, the upper rod support plate 70 has a first spring stopper claw.
47 has a second spring stopper claw 48 on the upper portion of the sliding pipe 43.
Of the turning unit upper and lower springs 45 axially mounted between the sliding pipe 43 and the upper rod support plate 70 by the first spring stop claw 47 and the second spring stop claw 48. Both ends are locked respectively.

Here, in a normal state, the sliding pipe 43 is in contact with the lower rod support 71, but when the page turning reading unit 1 receives an external force, it resists the elastic force of the turning unit upper and lower springs 45 and slides. It slides upward in FIG. 4 along the dynamic support rod 46.

At this time, the sliding pipe 43 has a second spring stopper claw.
The sliding force for returning to the above-mentioned normal state is exerted by the elastic force of the turning unit upper and lower springs 45, which constantly presses 48 downward.

Further, the sliding range of the sliding pipe 43 to the upper side is in a state where the scan cutoff sensor 34 arranged on the turning unit drive plate 49 detects the upper limit detecting portion 76 provided on the sliding pipe 43, The sliding position of the sliding pipe 43 upward is set to the limit position.

On the other hand, as shown in FIG. 4, the turning unit drive plate 49 includes an upper rod support plate 70, a lower rod support plate 71, a first spring stop claw 47, a scanning pipe 51, a drive belt fixing portion 53, and a home detection. It is formed integrally with the filler 75.

Further, as described above, the drive belt fixing portion 53 of the turning unit drive plate 49 is formed by the drive belt fixing plate 54 and the drive belt fixing screw 55 so as to turn the turning unit drive belt 52.
It is fixed to.

Further, the scanning pipe 51 of the turning unit drive plate 49 is fitted so as to smoothly slide on the scanning rod 50.

As a result, as described above, the page turning unit drive belt 52 is driven, and the page turning reading unit 1
When the home position 1-A is reached, the home sensor 30 shown in FIG.
51 home detection fillers 75 are configured to be detected.

Next, with reference to FIGS. 6 to 8, the configuration of the conveyance unit locking device in this document reading device will be described.

FIG. 6 to FIG. 8 are schematic views showing one configuration of the transport unit locking device 140 (same configuration on both sides) arranged on both sides of the MFDS.

This transport unit locking device 140 includes a lock release solenoid 1
32, and a lock rod 134 and the like.

In FIGS. 6 to 8, the lock release solenoid 13
2 is connected to one end of the unlock solenoid arm 133.

The other end of the unlock solenoid arm 133 has a lock rod 1
It is rotatably supported at one end of 34.

An electromagnetic lock 141 is arranged on the side of the lock rod 134 facing the unlock solenoid arm 133.

Further, at the other end of the lock rod 134, a lock release solenoid arm 133 is arranged, but a lock claw 134a bent in a key claw shape toward the arm is formed.

The lock rod 134 is rotatably supported by the rotating portion 136, and the upper portion of the rotating portion 136 is the lock spring 135.
It is connected to one end of.

The other end of the lock spring 135 is connected to a part of the transport unit 19, and thus, with respect to the lock rod 134,
In FIG. 6, a turning habit in the clockwise direction is given.

The rotation of the lock rod 134 due to the rotation habit is blocked at a predetermined angle by a lock claw stopper 137 arranged on the lower left side of the rotating portion 136.

On the other hand, on the document table 18 side, a lock pin 139 and a lock portion 138 in which the transport portion lock sensor 31 is arranged are formed.

In FIG. 6, when the transport unit 19 is closed while being pushed down, as shown in FIG. 7, the lock rod 139 is locked to the lock pin 139.
The lower end of the lock claw 134a of 34 abuts, and the lock rod 134 is rotated counterclockwise around the rotating portion 136 as a rotation axis.

From this state, when the transport unit 19 is further closed,
As shown in the figure, the lock claw 134a of the lock rod 134 is caught by the lock pin 139, and the transport unit 19 is fixed to the document table 18.

Further, when the transport unit 19 is locked, the lock rod 134
The transport portion lock sensor 31 is operated by the lock claw 134a.

This unlocking of the transport unit 19 is executed by pressing the open key 620 of the operation display board 313 shown in FIG.

That is, when the open key 620 of the operation display board 313 is pressed, the lock release solenoid 132 is actuated, the lock rod 134 rotates counterclockwise around the rotating portion 136 as a rotation axis, and the lock pin 139 causes the lock rod 134 to rotate. The lock claw 134a is released, and the transport unit 19 is opened by the transport unit opening / closing spring (not shown).
Is opened upward (see Fig. 10).

However, the open key 620 is programmed so that it does not operate (does not accept input) during a series of page turning scanning of the book document 92, during reading scanning, and during conveyance of the sheet document 200. .

Further, in the state where the open key 620 does not receive an input as described above, the electromagnetic lock 141 is activated, and the electromagnetic lock 141 causes the lock claw 134a to remain engaged with the lock pin 139, and The rotation is constrained.

The MFDS configured as described above is used by being mounted on, for example, the upper portion of the printer 300, as shown in FIGS. 9 and 10.

FIG. 10 shows a state in which the transport section 19 of the MFDS is opened, as described above.

Next, the configuration of the first reading sensor unit 9 inside the page turning reading unit 1 in this document reading apparatus will be described with reference to FIGS. 11 to 13.

11 is a perspective view near the end of the first reading sensor unit 9, FIG. 12 is a side view near the end of the first reading sensor unit 9, and FIG.
It is a detailed cross-sectional view of the end portion of.

Since both ends of the first reading sensor unit 9 have the same structure, only one of them will be described here.

As shown in FIG. 11, the first reading sensor unit 9 has a reading sensor bracket 14 formed in a U shape.
The upper portion of the reading sensor bracket 146 is covered with 6 and is vertically movable with respect to the reading sensor bracket 146.

The reading sensor bracket 146 is formed integrally with the page turning reading unit 1 by fixing both ends thereof to the first turning unit side plate 40 and the second turning unit side plate 41.

A reading sensor stud 148 is fixed downward at a position slightly inside the end of the reading sensor bracket 146.

The lower end of the reading sensor stud 148 is fitted into a boss 149 formed at the end of the first reading sensor unit 9 as shown in FIG.

As a result, the first reading sensor unit 9 is supported by the reading sensor stud 148 so as to be vertically movable with respect to the reading sensor bracket 146.

Here, the reading sensor stud 148 and the boss 149 are
A flange-shaped hooking portion formed at the lower end of the reading sensor stud 148 is configured so that the fitting thereof does not come off.

A read sensor spring 147 is axially mounted between the base of the read sensor stud 148 of the read sensor bracket 146 and the base of the boss 149 of the first read sensor unit 9, and the read sensor spring 147 extends. The force urges the first reading sensor unit 9 to move downward.

As a result, the first reading sensor unit 9
It is always located at the lowermost part of the page turning reading unit 1 and, for example, when an external force is applied due to the unevenness of the surface of the book original 92, the book original does not resist the external force.
It is moved up and down smoothly along the unevenness of the surface of 92.

In addition, at the end of the first reading sensor unit 9,
Read sensor release solenoid arm as shown
The read sensor release solenoid 150 is attached via 151.

As shown in FIG. 12, the reading sensor release solenoid 150 is fixed to the first turning unit side plate 40, and is moved to the page turning reading unit 1 without the original reading operation by the first reading sensor unit 9. At this time, for example, the read sensor release solenoid 150 is operated during the page turning operation, the blank scan of the non-read page, the return of the sheet document scan mode, and the like.

When the reading sensor release solenoid 150 is operated, the first reading sensor unit 9 is moved upward against the elasticity of the reading sensor spring 147, and the document scanning surface is retracted (separated) from the surface of the document. .

The first reading sensor unit 9 uses the signal of the encoder 152 generated by the rotation of the turning roller 2 as a reference signal for reading the image.

The turning roller 2 and the encoder 152 are configured as shown in FIG.

FIG. 14 shows a side view of the turning roller 2 on the back side.

In FIG. 14, at the rear end of the turning roller 2,
A filler 153 formed in a crown shape is arranged.

The filler 153 is formed by forming slits of equal width at equal intervals on the circumference.

The encoder 152 is fixed to the second turning unit side plate 41 so that the filler 153 is vertically sandwiched.

As a result, the encoder 152 can turn the turning roller 2
The filler 153 periodically interrupts the detection optical path of the encoder 152 in response to the rotation of, and thereby generates a reference signal for image reading of the first reading sensor unit 9.

On the other hand, positioning of the book document 92 with respect to the document table 18
This is performed by the central reference positioning unit 24.

A detailed sectional view of the central reference positioning portion 24 is shown in FIG.

The central reference positioning portion 24 is a reference position for reading and scanning the book document 92 and for page turning scanning.

The central reference positioning portion 24 is formed in a groove formed in the central portion of the document placing surface 116.

In this groove, the central positioning plate 113 is provided with the document placing surface 116.
It is fitted so that it can move up and down.

The central positioning plate 113 is always provided with the habit of rising by the central positioning spring 114 arranged at the lower portion thereof.

The upward movement of the central positioning plate 113 due to this behavior is caused by the stopper 118 formed at the edge of the groove of the document placing surface 116.
Then, the stopper claws 119 of the central positioning plate 113 come into contact with the stoppers 119 to stop them, and they are normally stopped at the position shown by the broken line in FIG.

The book original 92 is set on the original placement surface 116 by placing the book original 92 on the center positioning plate 113 in the groove (binding portion).
It is done by placing.

That is, when the spine (binding portion) of the book original 92 is placed on the central positioning plate 113 in the groove, the book original 92 is placed.
The center positioning plate 113 is pushed down by the self weight of the.

As a result, the book document sensor 27 arranged on the side of the document mounting surface 116 in the groove detects the movement of the central positioning plate 113, and the set of the book document 92 is recognized.

By the way, an MFDS operation display board 313 is arranged on the entire surface of the document table 18 (see FIGS. 9 and 10).

The operation display board 313 is provided with a large number of input keys as shown in FIG.

  The functions of these input keys will be described below in order.

The start key 600 is pressed when instructing to start reading a document.

The enter key 601 is pressed to confirm the input at the time of ten-key input or selection input on the liquid crystal display panel.

The ten-key pad 602 is used to set the number of originals to be printed, the number of pages to be turned, and the like.

The reading start page selection key 603 is set to “left” when facing the book document 92 in the book document reading mode.
This is a key for selecting which page “right” to start reading, and every time the key is pressed, the left and right of the reading start page of the book document 92 is switched.

The reading start page at the time of initial setting of this key is set to the “left” page, and whether the reading start page selected by this key is left or right of the book document 92 is two reading start pages. Indicator LED 631
Is displayed depending on which is lit.

The reading total page setting key 606 is pressed to set the total number of pages to be read when inputting the number of pages to be turned in the book document reading mode.

The total number of read pages of the book document 92 is confirmed by pressing the total read page setting key 606, inputting the number of pages with the ten keys 602, and then pressing the enter key 601. LCD display panel
Displayed on 630.

The book size selection key 607 is pressed to select either the "automatic book size recognition mode" or the "book size key input mode" in the book document reading mode.

Also, every time this key is pressed, the book size display LED 632 displays "automatic", "standard size", "irregular size (mm
Input) ”, and this book size display LE
The mode displayed by D632 is selected.

When the book size selection key 607 is initially set, the display of the book size display LED 632 is "automatic",
"Automatic book size recognition mode" is selected.

Here, in book size key input mode, "Standard"
, And "Amorphous (mm input)", the book size is
Only in the case of A5 / B5 / A4, by selecting “standard size”, it becomes possible to input the book size by the standard size book size selection key 619.

Each time the standard book size selection key 619 is pressed, the standard book size display LED 633 displays “A5”.
It is switched in the order of "B5" and "A4", and the selected book size is displayed and recognized.

At the time of initial setting of this standard book size selection key 619,
The standard book size display LED633 displays "A4".

However, the book size here refers to the size of the cover of the book document 92.

Here, when the book original 92 is other than the standard book size described above, the book size selection key 607
Select "Custom (mm input)" and use the numeric keypad 602 to set the vertical size and horizontal size (mm) of the set book original 92.
After inputting each unit, press the enter key 601 to confirm the book size.

When the size of book document 92 is determined in this manner, the input size value is displayed on liquid crystal display panel 630.

The book binding portion mask area setting key 608 is used to set the non-read area (mask area) from the center of the central reference positioning section 24 to "left (-)" or "right (+)" in the book original reading mode. This is pressed when setting which is to be done.

That is, when the mask area is formed in the book binding portion of the book original 92, first, with the book binding portion mask area setting key 608, it is set which of the left and right pages of the book original 92 the mask area is formed, and then , Input the length (mm unit) of the set "left mask area (-)" or "right mask area (+)" with the ten keys 602, and then confirm this input value with the enter key 601. .

When the mask area of book document 92 is determined in this manner, the input value is displayed on liquid crystal display panel 630.

The value of the mask area when the book binding portion mask area setting key 608 is initially set is “± 10 mm”.

The reading area selection key 609 is used to set the reading area of the book original 92 to “one page (left)”, “one page (right)”, or “both pages” in the book original reading mode. Pressed when is selected.

Each time the reading area selection key 609 is pressed,
The reading area display LED636 display is "one page (left)".
The page is switched to "single page (right)" / "both pages", and the selected reading area is displayed and recognized.

When the reading area selection key 609 is initially set, the reading area display LED 636 displays “both pages”.

Here, when "single page (left)" is selected, the reading scan of only the left page is performed toward the book document 92, and the reading scan of the right page is not performed.

If "one page (right)" is selected here, the reading scan of only the right page is performed toward the book document 92, and the reading scan of the left page is not performed.

The spread continuous copy key 610 is pressed to instruct to print out the read document information at the same magnification in the "two-page spread continuous reading mode" of the book document reading mode and the "double-sided mode". To be done.

The double-page spread continuous reduction key 611 is used when instructing to print out the read document information at a reduction ratio in the “two-page spread continuous reading mode” of the book document reading mode and the “double-sided mode”. Is pressed.

At this time, the reduction ratio of the document information is set by operating the print scaling key 614.

In addition, the standard reduction ratio of this double-page spread continuous reduction key 611 at the initial setting is "original size × 0.71 (A3 → A4 / B
4 → B5) ”, the double-sided mode selection key 612 displays which side is the front side and which side when the book document reading mode is the“ double-sided mode ”of the“ single-page spread page reading mode ”. "Double-sided spread mode"
・ "Original duplex mode" and "Sequential duplex mode" 3
Pressed when selecting from two double-sided modes.

Each time the double-sided mode selection key 612 is pressed once, the display of the double-sided mode display LED 634 is “spread double-sided mode”.
The "original duplex mode" and "sequential duplex mode" are switched in this order, and the selected reading area is displayed and recognized.

When the double-sided mode selection key 612 is initially set, the double-sided mode display LED 634 displays "original double-sided mode".

Here, when the "two-page spread double-sided mode" is selected, of the left and right pages of the two-page spread book document 92, the left page is the front side and the right page is the back side, and double-sided printing is performed.

At this time, press the read start page selection key 603
When the reading start page of the book document 92 is set to "right", the first print of the first page is a single-sided print.

Further, when the "original duplex mode" is selected here, the right page of the left and right pages of the book document 92 that has been opened is turned to the front side, and the left page of the next page turned over by the page turning operation. Double-sided printing is performed with the side facing down.

That is, in the "original double-sided mode", printing is performed in exactly the same way as the binding of the book original 92 to be read.

At this time, press the read start page selection key 603
When the reading start page of book document 92 is set to “right”, the same as in “two-page spread mode”
The first print on the first page is a single-sided print.

Further, here, when the “sequential duplex mode” is selected, of the left and right pages of the book document 92 that has been opened, the page set by the reading start page selection key 603 is displayed as a table, and the page turning operation is performed. Double-sided printing is executed in the order in which the next page is turned over, with the next page turned over as the back side.

The double-page spread high-speed print setting key 613 decelerates the operation of the page-turning reading unit 1 near the binding portion of the book original 92 in the "single-sided mode" of the "two-page spread continuous reading mode" in the book original reading mode. Alternatively, the scanning is continuously performed without stopping, and is pressed when instructing continuous printing of both left and right pages of the book document 92.

A print scaling key 614 is a key for setting a scaling factor when a read image is scaled and printed.

When the print scaling key 614 is pressed, a preset scaling ratio is displayed on the liquid crystal display panel 630.

Here, the scaling factor is determined by moving the cursor to a desired scaling factor with the cursor movement key 617 and then pressing the enter key 601.

The image processing setting key 615 is a key for setting the image processing mode when the read image is image processed and printed.

When the image processing setting key 615 is pressed, a preset image processing mode is displayed on the liquid crystal display panel 630.

Here, the image processing mode is determined by moving the cursor to a desired image processing mode with the cursor movement key 617 and then pressing the enter key 601.

The mode setting selection key 616 is a key for setting the operation mode of MFDS.

When the mode setting selection key 616 is pressed, a preset MFDS operation mode is displayed on the liquid crystal display panel 630.

Here, the operation mode of the MFDS is determined by aligning the desired operation mode cursor of the MFDS and then pressing the enter key 601.

The cursor movement key 617 is a key for moving the cursor to each selection area displayed on the liquid crystal display panel 630.

The read skip page setting key 618 is a key for setting a page to be skipped without executing read scanning in the book document reading mode.

That is, if there is a page of each page of the book document 92 that is desired to be skipped without performing the document scanning, first, the read skip page setting key 618 is set.
Then, press the numeric keypad 602 to enter the page number (skip page) to be skipped in the book document 92 from the read start page, and then press the enter key 601 to select this skip page. To confirm.

The skip page input in this manner is displayed on the liquid crystal display panel 630.

The standard book size selection key 619 is a key for selecting the book size of the book original 92.

As mentioned above, in the book size key input mode,
There are "standard size" and "non-standard size (mm input)", and only when the book size is A5 / B5 / A4, select "standard size" to select the book size using this standard book size selection key 619. Can be input.

Each time the standard book size selection key 619 is pressed, the standard book size display LED 633 displays “A5”.
It is switched in the order of "B5" and "A4", and the selected book size is displayed and recognized.

At the time of initial setting of this standard book size selection key 619,
The standard book size display LED633 displays "A4".

However, the book size here refers to the size of the cover of the book document 92.

The open key 620 is pressed when opening the transport unit 19 of the MFDS.

The sheet original set selection key 625 is used to set the original side of the sheet original 200 set on the original placing surface 116 to “up” in the “single-sided original reading mode” of the “sheet original through mode” in the sheet original reading mode. -A key for selecting either "down".

Each time the sheet document set selection key 625 is pressed, the sheet document set display LED 635 displays “upward”.
-Switching in the order of "down", the selected sheet original setting surface is displayed and recognized.

When initializing this sheet original set selection key 625,
The display of the sheet document set display LED 635 is “upward”.

Next, the printer 300 shown in FIGS. 9 and 10 will be described.

  A schematic sectional view of the printer 300 is shown in FIG.

The image information after the image processing is written on the photoconductor drum 170 in the form of a set of light spots by raster scanning of laser light in the writing unit of the printer 300.

A semiconductor laser is used as the laser light source at this time, and a plan view of the writing unit of this printer 300 is shown in FIG.

In FIG. 18, the laser light emitted from the semiconductor laser 17 is converted into a parallel light flux by the collimator lens 172,
The aperture 173 shapes the light flux into a constant shape.

This shaped beam is the first cylinder lens 174.
Thus, the light is incident on the polygon mirror 175 in a compressed form in the sub-scanning direction.

The polygon mirror 175 has an accurate polygonal shape and is rotated by a polygon motor 176 in a fixed direction at a fixed speed.

The rotation speed of this polygon mirror 175 depends on the photosensitive drum 1.
It is determined by the speed of 70, the writing density, and the number of faces.

The reflected light of the laser light incident on the polygon mirror 175 is deflected by the rotation of the mirror.

This deflected laser light is transmitted to each of the fθ lenses 177a, 177b,
It is incident on 177c.

These fθ lenses 177a, 177b, and 177c have a function of converting scanning light having a constant angular velocity so as to scan the photosensitive drum 170 at a constant speed, and the scanning light so as to have a minimum light spot on the photosensitive drum 170. It has a function of forming an image and a function of correcting the surface tilt.

The light passing through each of the fθ lenses 177a, 177b, and 177c is outside the image area, and is detected by the synchronization detection mirror 178 by the synchronization detection sensor 1.
The image data is output for one line after a certain period of time from the output of the sync signal for outputting the cueing signal in the main scanning direction to the output of 79, and thereafter, this is repeated to form one image.

On the other hand, a photosensitive layer is coated on the surface of the photosensitive drum 170.

Here, as the photoreceptor having sensitivity to the wavelength of 780 nm of the semiconductor laser 171, organic photoreceptor (OPC), α-Si, S
Although e-Te and the like are known, an organic photoconductor is used in this embodiment.

Further, generally, in the case of laser writing, there are an N / P process of shining light on the image part and a P / P process of shining light on the background part. The N / P process is applied.

In FIG. 17, the surface of the photosensitive drum 170 is uniformly negatively charged by the charging charger 180 of the scorotron type in which the photosensitive drum 170 has an alligator grid.

Next, when the image portion of the negatively charged photosensitive drum 170 is irradiated with laser light and the potential of the image portion is reduced, the surface potential of the photosensitive drum 170 is −750.
An electrostatic latent image with an electric potential of about −800V and an image portion potential of about −50V is formed.

This electrostatic latent image is applied to the developing roller of the developing device 181 at -500 to
It is visualized by negatively charged toner by applying a bias voltage of -600V.

The image visualized by the developing device 181 is a transfer charger 182 which applies a positive potential charge from the back side of the transfer paper to the paper surface of the transfer paper fed in synchronism with the rotation of the photosensitive drum 170. Is transcribed by the transcription action of.

The transfer paper on which this image was transferred is the transfer charger 182.
AC separation is performed by a separation charger 183 held integrally with the photosensitive drum 170 to separate it from the surface of the photosensitive drum 170.

At this time, the photoconductor drum 170 is not transferred to the transfer paper.
The toner remaining on the upper surface is scraped off from the surface of the photoconductor drum 170 by the cleaning blade 184 and is collected in the tank 185 arranged around the cleaning blade 184.

Further, the potential pattern remaining on the surface of the photoconductor drum 170 is erased by being irradiated with light by the static elimination lamp 186.

A photo sensor 187 is provided immediately downstream of the developing device 181.

The photo sensor 187 includes a light receiving element and a light emitting element, measures the reflection density on the surface of the photoconductor drum 170, and the reflection density (toner density after development) is equal to or lower than a preset reference value. Then, a toner supply signal for supplying new toner to the developing device 181 is output.

That is, for example, the photo sensor 187 writes a fixed pattern (pure black or halftone dot pattern) at the position corresponding to the reading position of the photo sensor 187 by the optical writing unit, and develops this pattern. And the photoconductor drum 17 outside this pattern area
The density of the developed image is judged from the ratio with the light reflectance of 0, and the toner replenishment signal is output when the density of the image is lower than the reference value.

If there is not enough new supply toner,
Even if the toner replenishment signal is output, the photosensor 187 may be configured to be used also as a sensor for detecting the shortage of the remaining amount of toner by utilizing the fact that the development density does not increase.

On the other hand, the printer 300 according to the present exemplary embodiment includes a plurality of cassettes 188.
a and 188b are provided, and the transfer paper on which the image is once transferred can be double-sided fed through the refeed loop 189.

That is, in FIG. 17, when the start button of the printer 300 is pressed after the predetermined cassette is selected,
The selected paper feeding roller among the paper feeding rollers 190a and 190b of each cassette 188a and 188b is rotated, and the transfer paper in the cassette is fed until it abuts against the nip of the registration roller 191.

The registration roller 191 starts rotating at a timing at which the position of the image formed on the photoconductor drum 170 and the position of the transfer paper are synchronized, and the transfer paper is fed toward the surface of the photoconductor drum 170. To send.

As a result, as described above, an image is transferred to the transfer paper, and after the image is transferred from the surface of the photoconductor drum 170, the transfer paper is sucked and conveyed to the separation and conveyance unit 192, and the heat roller 1
The toner transferred onto the paper surface is fixed by the fixing roller 93 and the pressure roller 194.

The transfer paper on which the toner has been fixed has the switching claw 195 facing the position as shown in FIG. 19 (a) during normal printing, and the switching claw 195 allows the discharging tray 169 to pass through the discharging port of the printer 300. Discharged on top.

Here, when the print mode of the printer 300 is the “double-sided mode”, the switching claw 195 is switched to the position shown in FIG. 19 (b), and is directed toward the double-sided conveyance path formed on the left side of the printer 300. The transfer paper is conveyed.

This transfer paper passes through the reverse guide claw 195, and once
After being guided onto the reverse guide tray 197, the reverse guide claw 196
Is switched and the reverse guide roller 198 is reversely rotated (reversed), so that the sheet is fed through the sheet re-feeding loop 189 until it comes into contact with the nip of the registration roller 191 again.

In this way, the re-fed transfer paper is transferred and fixed with the toner image formed on the photoconductor drum 170 in the same manner as in the above-described normal printing, and then, FIG.
The sheet is discharged onto the sheet discharge tray 169 via the switching claw 195 which has been switched to the initial state shown by.

Here, in the case of the "rear surface discharge mode", in which the transfer paper is discharged with the image fixing surface of the transfer paper facing the stacking surface of the discharge tray 169 during the discharge in the single-sided print mode, As in the case of the above “double-sided mode”, the switching claw 195 is switched to the position shown in FIG. 19 (b), and the transfer sheet is once conveyed toward the double-sided conveying path without being ejected as it is. It

Then, when the rear end of the transfer paper passes the switching claw 195, immediately after that, the switching claw 195 is switched to the position shown in FIG.
The transfer paper, whose rotation direction is reversed and guided to the double-sided conveyance path, is switchback-conveyed, and is discharged onto the paper discharge tray 169 through the paper discharge port of the printer 300.

In this "rear surface discharge mode", the transfer paper printed on one side is discharged onto the discharge tray 169 with its image fixing surface facing the stacking surface of the discharge tray 169. Then, the transfer paper is ejected in the order of the print pages of the transfer paper.

By the way, as described with reference to FIG. 4, the page turning reading unit 1 includes the turning rollers 2, between the first turning unit side plate 40 and the second turning unit side plate 41.
The first roller 4, the second roller 5, the pressing roller 6, and the first roller
The bias rollers 3 are rotatably arranged.

As shown in FIG. 20, the turning roller 2, the first roller 4, the second roller 5, the pressing roller 6, and the first bias roller 3 are wound around the turning roller 8.

A first high-voltage power supply 320 is connected to the first bias roller 3 and is configured so that an AC voltage of each frequency for adsorption and charge removal is applied from two ports.

Further, inside the page turning reading unit 1, a turning guide 10 is provided between the turning roller 2 and the first reading sensor unit 9, and above the turning guide 10, the turning conveyance belt 8 is provided. The page storages 7 are arranged along the circumferential surface.

The page storage unit 7 is provided with a page turning sensor 29 including a photo sensor for detecting an error at the time of turning the page.

The page turning sensor 29 may be arranged on the turning guide 10.

Further, between the turning roller 2 and the pressing roller 6,
As described with reference to FIG. 11, the first reading sensor unit 9 is arranged.

The first reading sensor unit 9 is attached to the page turning reading unit 1 so as to be vertically movable by about 3 mm, and is pressed downward by the reading sensor spring 147 to read the book original 9 when reading the original.
2, or is configured to be in close contact with the document surface of the sheet document 200.

Further, as shown in FIG. 21, the first reading sensor unit 9 includes an LED 316 as a document illumination system, an RMLA81 (roof mirror lens array) as a document image forming system,
Further, it is provided with a Si equal-magnification sensor 315 as a photoelectric conversion system for converting the formed optical image of the document into an electric signal.

The document reading by the first reading sensor unit 9 is performed as follows.

In FIG. 21, first, the light emitted from LED316 is
The bar lens 83 collects the light on the document surface and illuminates the document.

Next, the reflected light from the document surface is reflected by the optical path separating mirror 84.
Reflected by LA85 (lens array) and RMA86
Pass through (roof mirror array) and again, optical path separation mirror
Reflected by 84.

The image light of the document reflected by the optical path separation mirror 84 is imaged on the light receiving surface of the Si equal-magnification sensor 315, and the image information formed on the Si equal-magnification sensor 315 is converted into an electric signal. Is read.

Next, a basic page turning operation in the embodiment of the present invention configured as described above will be described.

First, the reading of a document in this embodiment is performed in the following procedure.

If the original is Book Original 92, the operation display board 313
Press the open key 620 to open the transport section 19 upward as shown in FIG.
Then, the binding portion (back) of the book original 92 is set, and the conveying section 19 is closed as shown in FIG. 9 with the reading start page of the book original 92 open upward.

In this state, each key of the operation display board 313 is operated to set the reading condition of the book document 92, and then the start key 600 is pressed to start the MFDS.

As a result, as shown in FIG. 1, the page-turning unit drive belt 52 is driven by the page-turning unit drive motor 60 to move the page-turning reading unit 1 from the home position 1-A at the left end to the right. When the page turning reading unit 1 is moved, the first reading sensor unit 9 reads the document information of the book document 92.

At this time, the turning and conveying belt 8 has stopped its rotation, and holds the original surface of the book original 92 that has been opened from above.

As described above, the page turning reading unit 1 is rotated about the rotation support rod 42 as a fulcrum, and the slide pipe 43 integrated with the rotation support rod 42 is used as the slide support rod.
By being moved up and down along 46, it is moved along the document surface of the book document 92 while the first reading sensor unit 9 is in close contact with this document surface.

Further, when the page-turning reading unit 1 reaches the book manuscript reading midway position 1-B in the approximate center of the book manuscript 92, it is attracted to the first bias roller 3 from the first high-voltage power supply 320 shown in FIG. An alternating voltage for application is applied to form a stripe-shaped charge pattern on the turning and conveying belt 8.

As described above, the page turning reading unit 1 forms the stripe-shaped charge pattern on the turning conveyance belt 8 and at the end position 1-C at the right end in FIG.
Then, the first reading sensor unit 9 reads the document information of the book document 92.

When the reading of the manuscript information of the book manuscript 92 is completed as described above, the page turning reading unit 1 moves to the 22nd
As shown in the drawing, the return movement is performed from the end position 1-C toward the home position 1-A.

At this time, as shown in FIG.
An unequal electric field is generated on the upper side by the charge pattern formed during the reading operation, and this electrostatic field causes the right page of the book original 92 to turn over the turning conveyance belt 8
It is designed to be electrostatically adsorbed.

Therefore, in this state, the page turning reading unit 1
Is moved toward the end position position 1-C, and when the page turning reading unit 1 reaches the turning start position 1-D shown in FIG. 22, as shown in FIG. Book manuscript with belt 8
The edge of one right page 92 of the document is rolled into the page turning reading unit 1.

As described above, the leading edge of the document wound in the page turning reading unit 1 is separated by the movement of the page turning reading unit 1 due to the curvature separation of the turning roller 2 and the waist strength of the document. , Is gradually separated from the turning conveyance belt 8.

In this way, the document gradually separated from the page-turning conveyor belt 8 is moved along the turning guide 10 shown in FIG. 20, and the page storage unit 7 arranged on the downstream side in the moving direction of the document. Be guided inside.

As shown in FIG. 20, the page storage section 7 is formed in a cylindrical shape, and by winding the document wound in the page turning reading unit 1 along the inner peripheral surface thereof, the page storage section 7 is extremely The manuscript for one page that has been read can be stored in a small space.

Therefore, according to the page turning reading unit 1,
As shown in FIG. 22, this page turning reading unit 1
From the turning start position 1-D to the winding completion position 1
By returning to −E, the original for one page that has been read and the original for the next page to be read by the next reading operation can be separated very smoothly.

Documents stored in the page storage unit 7 in this way are
From the winding completion position 1-E, the page turning reading unit 1 goes beyond the center of the book original 92 and passes the book original.
The left page of 92 is further moved back toward the page discharge position 1-F, so that the page-turning reading unit 1 and the document stored in the page-turning reading unit 1 move relative to each other. The pages are started to be discharged from the page storage unit 7 of the page turning reading unit 1.

Then, the page turning reading unit 1 is returned to its home position 1-A, and when the movement is completed, the document stored in the page storing section 7 of the page turning reading unit 1 is discharged. Is completed, and the page turning operation for one page of the document that has been read is completed.

On the other hand, during the operation of turning the original, the first bias roller 3 is operated immediately after the winding of the original in the page storage unit 7 of the page turning reading unit 1 is disclosed and before the winding of the original is completed. Further, by applying an AC voltage for static elimination from the first high-voltage power supply 320 shown in FIG. 20, the electric charge pattern formed on the turning conveyance belt 8 is programmed to be neutralized.

Therefore, at the time of returning movement of the page-turning reading unit 1, an electrostatic attraction force is not generated between the read document and the flip-turning conveyance belt 8 for turning the document. The taking operation and the discharging operation can be performed extremely smoothly.

By the way, conventionally, as a device for holding and carrying a sheet member or the like, a device based on an air suction method or an electrostatic attraction method based on a comb-teeth electrode and an electric double layer method is known.

As a page turning device for book documents, a device applying an air suction method or the like has been proposed.

However, each of these methods has drawbacks as will be described later, and it is almost impossible to put a book page turning device into practical use based on these methods.

That is, the air suction method requires an air pump for sucking air to generate a negative pressure and a suction path for the air, and thus has a drawback of increasing the size of the apparatus.

In the comb-teeth electrode embedding method, two comb-teeth electrodes are embedded in a dielectric so that the teeth of the comb-teeth are meshed with each other, and a positive electrode voltage and a negative electrode voltage are applied to the respective electrodes. Not only is the cost high, but it is difficult to form the document turning and conveying belt into an endless belt.

Further, in the electric double layer method, the belt and the sheet are charged with electric charges of opposite polarities by corona discharge or the like.
Charges cannot be charged without separating only the pages to be turned.

Further, for example, in other page-turning methods that use a frictional force of a rubber roller or the like, the page-turning accuracy is significantly restricted depending on the paper quality and size of the book document, so that it is difficult to improve the reliability. .

On the other hand, in the embodiment of the present application, FIG. 20, FIG.
As shown in FIG. 24, an AC voltage for adsorption is applied from the high-voltage power supply 320 to the turning conveyor belt 8 which is an endless belt, and an alternating striped charge pattern is formed on the surface of the turning conveyor belt 8. By forming the sheet, an unequal electric field is generated on the turning and conveying belt 8 to hold and convey the original and turn the page.

Therefore, according to this page-turning method, the document can be held and conveyed, and the page-turning operation can be performed extremely smoothly.

Below, the basic configuration of this page turning method,
The principle of electrostatic attraction will be described.

As the page-turning conveyor belt 8 used in this page-turning method, a belt having a two-layer structure in which the back surface of the dielectric material formed in the shape of an endless belt is subjected to a conductive treatment is used.

As a means for applying an alternating voltage to the turning conveyance belt 8, the first bias roller 3 rotatably supported by contacting the peripheral surface with the surface of the turning conveyance belt 8 An AC voltage for adsorption was applied by a high voltage power supply 320.

As shown in FIG. 20 and FIG. 23, the turning conveyor belt 8
The dielectric layer of the turning conveyor belt 8 is moved by relatively moving the turning conveyor belt 8 and the first bias roller 3 while applying an alternating electric field to the first bias roller 3 with the conductive layer 8b of FIG. A stripe-shaped charge pattern is formed on the surface of 8a.

As a result, an unequal electric field is generated in the vicinity of the surface of the dielectric 8a of the turning and conveying belt 8.

When a dielectric such as a sheet of paper to be read is brought close to the unequal electric field, the inside of the sheet is polarized, and the electric field is unequal. work.

This becomes clear by applying the maxwell stress over the surface of this sheet for the area.

Here, the stress of maxwell is It is represented by.

If the direction of the surface of the turning conveyance belt 8 is the X-axis, the maxwell stress in the X-axis direction is Equation (b) represented by

Next, along the outer surface (upper and lower surfaces) of the paper, this (b)
The object force (adsorption force) N of this sheet is obtained by dividing the maxwell stress fx in the X-axis direction represented by the expression by the area.

  That is, the object force (adsorption force) N of this paper is   N = ∫sfxdS Becomes

Accordingly, when the friction coefficient of this sheet is μ, the transporting force F of this sheet is expressed by the formula F = μN.

As a specific configuration of the present embodiment, as the turning conveyance belt 8, a PET film (dielectric 8a) with a thickness of 75 μm,
An endless belt on which an aluminum vapor deposition layer (conductive layer 8b) having a thickness of 10 μm was formed was used, and the pitch of the charge pattern formed on the endless belt was 2.4 mm.

Here, the reading speed of the book document 92 was 120 mm / s, the AC frequency was 50 Hz, and the applied voltage was ± 2 kV _PP .

Moreover, the experimental value of the pitch characteristics of the conveying force when the constant applied voltage ± 2 kV _PP in FIG. 25, the pitch characteristics of the attraction force when the constant applied voltage ± 2 kV _PP in FIG. 26 Fig. 27 shows the experimental values of the applied voltage characteristics of the carrier force when the charge pattern pitch is constant at 2.4 mm, and Fig. 28 shows the adsorption when the charge pattern pitch is constant at 2.4 mm. The experimental value of the applied voltage characteristic of force is shown.

As is clear from these experimental values, the pitch of the charge pattern used in this example and the applied voltage are not limited to the above-mentioned values, and for example, the pitch of the charge pattern is 0.5 mm. The range is up to 10 mm.

Further, in this embodiment, as the high-frequency AC voltage for static elimination, the frequency of 2 kHz and the applied voltage of ± 2 kV _PP are used, but each of these values is also a value capable of obtaining the static elimination effect. , Any value may be used.

As described above, according to the page-turning method of the present embodiment, it is not necessary to make any work on the sheet (book original 92) to be attracted to the turning-conveying belt 8, so that the sheets attract each other due to static electricity. Without
Book originals 92 due to paper edge irregularity (misalignment)
It is possible to eliminate the occurrence of page turning mistakes.

Further, according to this page turning method, since the place where the suction force is generated is in the vicinity of the surface of the turning and conveying belt 8, the paper which is in contact with the surface of the turning and conveying belt 8, that is, the book. Although the page turning of the original 92 is performed, a sufficiently large conveyance force and suction force act on the uppermost original, but the second and subsequent originals located below the original. However, the conveying force and the suction force hardly act on the above.

Therefore, according to this page-turning method, only one page can be surely executed, and this method is the most suitable as the page-turning method for the book document 92.

Next, the operation of the MFDS configured as described above will be described.

FIG. 29 is an electrical block diagram of the MFDS, FIG. 30 is an operation mode transition diagram at the time of reading a book original, FIG. 31 is a transition diagram at the time of reading a sheet original, and FIG. 32 is a flowchart showing the operation mode of the MFDS. is there.

First, the control means of the MFDS will be described with reference to FIG.

In FIG. 29, the main control board 310 controls commands and data between the boards and turns on / off each load.
The MFDS is controlled as a whole by performing timing, error handling by each sensor input, and mode switching.

Further, the main control board 310 is configured to set a communication protocol by communicating with the connected devices and individually support each connected device.

For example, when the printer 300 is connected as its output device, its pixel density, processing speed, double-sided printing availability, back-side paper delivery availability, etc. can be checked to determine the corresponding mode selection area. It is configured.

Further, the main control board 310 has two systems of interfaces to external devices corresponding to each mode.

In the main control board 310 of this embodiment, commands between the boards are serially communicated, separated from the data / control lines, and commands can be transmitted / received even while the data is being output.

Here, if you want to increase its versatility, set either or both of GPIB, Centronics, SCSI, etc. as the interface, and display it via a general-purpose printer or personal computer. , Optical disk drive, HDD, and FDD
It can be stored in a storage device such as without using a special interface.

On the other hand, in FIG. 29, the turning conveyance belt drive control board 311 controls the turning conveyance belt drive motor 61.

The turning unit drive control board 312 controls the turning unit drive motor 60.

Here, the turning conveyance belt drive motor 61 detects the speed of the turning conveyance belt 8 by the feedback of the encoder pulse generated by the encoder integrally mounted on the turning conveyance belt drive motor 61, and the speed position control and the normal position detection are performed. Reverse operation is performed.

On the other hand, the turning unit drive motor 60 detects the position of the turning roller 2 by the feedback of the encoder pulse generated by the encoder 152 attached to the turning roller 2, and performs the speed position control and the forward / reverse operation. .

In addition, these turning conveyor belt drive control board 31
1 and the turning unit drive control board 312 are connected to the main control board 310, respectively, and transmit / receive commands to / from the main control board 310 by serial communication.

The operation display board 313 is provided with key inputs for setting the number of prints, the scaling factor, the number of pages to be turned, each mode, and the like, as well as a display for these key inputs, an error display, a turning state display, and Displays the original setting method, etc.

Here, in the mode display, the connected device (printer
300) ability to display only possible modes, or if an impossible mode is selected, an error is displayed.

For example, when a printer that cannot print a screen is connected, but the duplex mode selection key 612 is pressed, "the connected printer cannot support both sides".
The error display such as

Further, the reading of the document is started by the key input of the start key 600 on the operation display board 313.

Further, the operation display board 313 and the main control board 310 are commanded by serial communication, or
Sending and receiving data.

The first image processing board 314 has a function of generating a drive clock of the Si equal-magnification sensor 315 (hereinafter referred to as the first CCD 315) built in the first reading sensor unit 9, and also the first reading sensor unit 9 has the same function. Built-in function to take ON / OFF timing of 1st LED316, 1st CC
It has the function of amplifying the output of D315 and A / D converting this output to perform image processing.

In addition, the first image processing board 314 performs image processing such as shading correction, MTF correction, main scanning scaling, character processing, photographic processing, and negative / positive inversion.

The first image processing board 314 is the main control board 310.
And transmits and receives data and commands to and from the main control board 310.

The second image processing board 317 is similar to the first image processing board 314 described above in that the second reading sensor unit 14 (first
The function of generating the drive clock of the second CCD 318 built in the same as the reading sensor unit 9) and the function of setting the ON / OFF timing of the second LED 319 also built in the second reading sensor unit 14. And has a function of amplifying the output of the second CCD 318 and subjecting this output to A / D conversion for image processing.

Further, in the second image processing board 317, as in the first image processing board 314, shading correction, MTF correction,
Main scanning scaling, character processing, photographic processing, and negative. Image processing such as positive inversion is performed.

Further, the second image processing board 317 is connected to the main control board 310, and the main control board 310 is connected.
Sends and receives data and commands to and from.

As described above, the first high-voltage power supply 320 is a power supply that applies a high-voltage AC voltage to the first bias roller 3, and is configured to be capable of generating two frequencies for attracting a document and removing the belt. The switching of each frequency is performed by switching signals from the two output ports of the main control board 310.

The second high-voltage power supply 321 is a power supply that applies a high-voltage AC voltage to the second bias roller 11 as with the first high-voltage power supply 320, and generates two frequencies for attracting a document and for removing the belt. The switching of each frequency is performed by switching signals from the two output ports of the main control board 310.

The paper feed clutch 128 controls the paper feed start timing of the sheet original 200 based on a control signal from the main control board 310.

Further, various sensors 25, 26, 27, 28, 29, 30, 31, 31, 32, 33, 34 connected to the respective input ports of the main control board 310
Performs the mode switching, timing detection, abnormality detection, etc., as described in the mechanism description above.
Each of them gives the detection signal to the main control board 310.

  Next, the operation mode of MFDS will be described.

The operation mode of MFDS is roughly divided into two modes.

The first operation mode of this MFDS is a book manuscript reading mode for performing automatic page turning reading operation of a book manuscript as shown in FIG. 30, and the second operation mode is as shown in FIG. This is a sheet document reading mode in which the sheet feed automatic reading operation is performed.

Each of the book document reading mode and the sheet document reading mode has a subdivided mode.

That is, as shown in FIG. 30, the book document reading mode includes an automatic book size recognition mode for automatically recognizing the book size of the book document 92 and an operation display board.
There is a book size key input mode in which a book size is designated by key input of 313.

In both the automatic book size recognition mode and the book size key input mode, an automatic page-turning reading operation for the book document 92 is performed by the spread reading mode in which the book document 92 is set with the document surface facing upward. Is done.

Further, in the book original reading mode, as its reading method, the original images of the left and right two pages of the opened book original 92 are continuously read in association with the output device (especially the printer), and the two pages are read. A two-page spread continuous reading mode in which an image is printed on one sheet of transfer paper, and a printer having a double-sided image forming function are used to print two pages of left and right original images in the two-page spread continuous reading mode. This two-page spread continuous reading mode, which forms the read images for the next two left and right pages of the two-page spread book original 92, is continuously formed on the back side of one transfer sheet. 1-page spread reading mode in which the original image of both left and right pages is read by dividing it into 1-page spreads. The back surface of the transfer paper that has been printed by di-ku law read mode, the printer having a double-sided image forming function to form separated a document image of the next left and right pages of the book document 92 wide open one page. This double-page spread has a double-sided read mode and a double-sided read mode.

On the other hand, in the sheet original reading mode, as shown in FIG. 31, with the position of the first reading sensor unit 9 or the second reading sensor unit 14 fixed,
The sheet original 200 is automatically fed and discharged while the original sheet image is read by the sheet through method, and the sheet original 200 is placed on the original placement surface 116.
With the sheet set (fixed), the first reading sensor unit 9 of the page turning reading unit 1 is repeatedly reciprocated (scanned) to scan the sheet original 200, and the sheet original scan mode and automatic original feeding There is a sheet document manual open / close mode that manually sets the document when the document cannot be set (or does not set) with the function (ADF).

In the sheet original through mode, the sheet original 200
There is a single-sided reading mode for reading an image on only one side and a double-sided reading mode for simultaneously reading images on both sides of the sheet original 200 by the first reading sensor unit 9 and the second reading sensor unit 14.

Further, in this double-sided reading mode, the first reading sensor unit 9 and the second reading sensor unit 14 are
The same position reading mode in which the document images are read at the same position facing each other, and the first reading sensor unit 9 and the second reading sensor unit 14 are provided.
It has a different position reading mode in which it is arranged at different positions shifted from each other and the original image is read.

The operation modes of the MFDS have been described above. Next, switching between the individual modes described above will be described with reference to FIG.

In Fig. 32, when the main power of MFDS is turned on, 29
The main control board 310, the turning conveyor belt drive control board 311, the turning unit drive control board 312 shown in the figure,
The operation display board 313, the first image processing board 314, and the second image processing board 317 are reset, and initial setting is performed.

After that, check the connection of the connected device such as the printer 300 and display the modes that can be supported by this connected device.
The input of each key for setting the number of prints, the scaling factor, the number of pages to be turned, each mode, and the like is accepted.

During this period, the book original 92 or the sheet original 200
Is set.

Here, when the sheet original 200 is set on the sheet original tray 94, the sheet original sensor 25 is turned on.

In addition, here, the open key 620 of the operation display board 313
The transport section 19 of the MFDS is opened by the
When the book document 92 is set in the central reference positioning section 24 in the opened state, the book document sensor 27 is
It is turned on.

These sheet document sensor 25 and book document sensor 27
ON / OFF status and numeric keypad 602 on operation display board 313
Depending on the number of prints indicating the number of prints of the sheet document 200 input by
It switches as shown in FIG.

That is, if the book original sensor 27 is OFF, the sheet original sensor 25 is ON, and the number of prints is "1", the sheet original through mode is entered.

If the book original sensor 27 is OFF, the sheet original sensor 25 is ON, and the number of prints is “2” or more, the sheet original scan mode is entered.

Further, when both the book original sensor 27 and the sheet original sensor 25 are OFF, the sheet original manual opening / closing mode is entered.

Also, when the book document sensor 27 is ON, the sheet document sensor
When 25 is OFF, the book document reading mode is entered.

Further, here, when both the book document sensor 27 and the sheet document sensor 25 are ON, the abnormality process 1 (warning buzzer ON and error display) is performed and the user is warned. , Transition to book document reading mode.

In this way, after entering each selected mode subroutine, the start key 60 on the operation display board 313 is pressed.
If is not pressed, the process returns to the step of accepting a key input without executing the image reading operation.

Next, the operation of each mode described above will be described.

First, the book document reading mode will be described with reference to FIG.

When the MFDS mode enters the book document reading mode, ON / OFF of the scan cutoff sensor 34 is checked.

As shown in FIG. 4, the scan cutoff sensor 34 is turned on by detecting the upper limit detector 76 when the page turning reading unit 1 moves up to its upper limit position.

As described above, the page turning reading unit 1 is moved up and down according to the thickness of the book document 92 placed on the document placing surface 116.

Ascending of the page turning reading unit 1, that is,
As the book document 92 becomes thicker, the tension of the turning conveyance belt 8 for driving the book document 92 becomes higher.

Therefore, when the tension of the page-turning conveyance belt 8 becomes too high, that is, when the book original 92 is too thick and the page-turning reading unit 1 rises too much, this tension acts as a brake to scan the page-turning reading unit 1. Can not be.

The belt tension sensor 32 detects a level at which the page turning reading unit 1 cannot scan because the book original 92 is too thick and the tension of the turning belt 8 becomes too high.

If this belt tension sensor B2 is ON, perform error processing 2 (warning buzzer ON and error message "book original is too thick"), and the user forcibly transports it.
19 is closed so that the transport section 19 is not damaged.

Here, when the thickness of the book document 92 is equal to or less than the adaptive level, the transport unit lock sensor 31 is turned ON by the user closing the transport unit 19.

At this time, if the transport unit 19 remains open, that is, if the transport unit lock sensor 31 remains OFF, abnormality processing 3 (warning buzzer ON and “close transport unit” display) is performed. .

Then, when the transport unit 19 is closed, ON / OFF of the book size upper limit sensor 33 is checked.

Here, the book size upper limit sensor 33 is
Is detected and turned on, that is, the book size of the book original 92 set on the original placement surface 116 exceeds the reading area of the page turning reading unit 1 and is unreadable. In the case of, an abnormal process 4 (a warning buzzer is turned on and "the size of the book document is too large" is displayed) is performed.

After that, after checking whether or not there is a key input such as print replacement, scaling ratio, and number of pages to be turned, in the case of automatic book size recognition mode, the prescan flag is set, and in the case of not automatic book size recognition mode, The book size input mode is set, and the reading area of the book document 92 is determined by setting a book size by performing a predetermined key input on the operation display board 313.

Then, when the start key 600 is pressed, the transport unit locking device 140 operates and the transport unit 19 is locked to the document table 18.

As a result, it is possible to avoid a situation where the user mistakenly opens the transport unit 19 and damages the book document 92 during the page turning operation by the page turning reading unit 1.

Next, after the operation of the transport unit locking device 140, if the above-mentioned prescan flag is set, the prescan operation of the page turning reading unit 1 is executed.

Here, if the prescan plug is not set, this prescan operation is skipped.

After this pre-scan operation, the connected device (printer 30
Wait until 0) is ready.

When the reading start signal output from the connection device (printer 300) is received when the connection device (printer 300) is ready, the page-turning reading unit 1 is driven and, as described above, the book is read. The operation of reading the original image of the original 92 is started.

The reading operation by the page turning reading unit 1 is repeatedly performed a number of times corresponding to the previously set print number.

Then, when this predetermined number of reading operations are completed,
As described above, the page-turning reading unit 1 performs the page-turning operation in order to read the original image on the next page.

In this way, the reading operation of the original image of the book original 92 and the page turning operation are repeatedly executed until the final page is turned according to the preset number of pages.

When the preset page turning operation of the final turning page is completed and the reading operation of the final reading page is completed a predetermined number of times, the page turning reading unit 1 does not perform the page turning operation of the final reading page. However, the book position is returned to the home position 1-A, and the book document reading mode routine is returned.

The basic operation of the book original scanning mode is the above 33rd operation.
As shown in the flow chart in the figure, the two-page spread continuous reading mode, the two-sided mode, and the one-page spread reading mode and the two-sided mode in this mode are the key input of FIG. It becomes the input mode accepted at the time of setting.

For each of these input modes, start key 600
This will be described with reference to the timing chart showing the progress after the button is pressed.

First, using the timing chart shown in FIG. 34,
The spread 2-page continuous reading mode will be described.

In FIG. 34, the start key 6 on the operation display board 313
When 00 is pressed and the reading start switch SW is turned on, a shutter (not shown) in the first reading sensor unit 9 is closed.

The inner surface of this shutter serves as a white reference plate, by which the shading correction of the first reading sensor unit 9 is performed.

The shading correction is performed every time the page turning reading unit 1 rises, and is completed before the moving speed of the page turning reading unit 1 reaches a constant speed (a timing chart of this portion is not shown).

This page turning reading unit 1 starts from the main control board 310 to the page turning unit drive control board 3
It is performed by the forward rotation start signal sent to 12.

By this forward rotation start signal, the page turning reading unit 1 starts the prescan.

Here, after the moving speed of the page turning reading unit 1 rises to the constant speed Vf, the above-mentioned shutter is already opened, and the reading of the original image of the book original 92 is started by the first CCD 315.

By the pre-scanning reading of the page turning reading unit 1, the edge of the book document 92 that has been opened is edge-detected by image processing, and the output of the encoder 152 attached to the turning roller 2 at this time is counted. The book size of the book original 92 set on the original placement surface 116 is recognized, and the reading area of the original image of the page turning reading unit 1 and the page turning area are determined.

Thus, in this MFDS, the book document 92 is placed on the document placement surface.
Since the center of 116 is set as a reference, by detecting only the left end of the set book original 92, the reading area of the original image of the page turning reading unit 1 and the page are read. The turning area can be calculated.

Therefore, in this MFDS, when the book size of the book original 92 is detected, it is not necessary to prescan the page turning reading unit 1 over the entire surface, and only the page turning reading unit 1 is short-prescanned, so that the original placing surface 11
It is possible to detect the book size of the book document 92 placed on the table 6.

This prevents the reading start page of the book document 92 from being mistakenly turned over during the prescanning of the page turning reading unit 1.

The book size data of the book document 92 is transmitted from the main control board 310 to the printer 300 as an externally connected device.

On the other hand, while the book size detection is completed and the book size data is being transmitted to the printer 300, the main unit control board 310 causes the turning unit drive control board 3 to operate.
A reverse rotation signal for reversely rotating the page-turning unit drive motor 60 is applied to 12, and the page-turning reading unit 1 is moved back to its home position 1-A at the speed Vr.

Note that the original placement surface 116 of the original table 18 of the MFDS is colored with a chromatic color, such as yellow, which is not often used as a book original, so that the original placement surface 116 is colored. Since the area identification accuracy between the placement surface 116 and the reading area of the original image of the book original 92 can be increased, the book size can be detected more accurately during the above prescan, and the book size data of the book size data can be detected. Reliability is improved.

In addition, here, if the document mounting surface 116 is colored with an intermediate color such as gray, for example, as the first CCD 315 of the first reading sensor unit 9, without using a color sensor,
The area can be identified during the pre-scan.

After the above prescan is completed and the page turning reading unit 1 is retracted to the home position position 1-A,
When the printer 300 is ready and the transfer request signal for requesting the data transfer is given from the printer 300 to the main control board 310, the main control board 31 is thereby activated.
From 0, a normal rotation signal for rotating the page-turning unit drive motor 60 in the forward direction is given to the page-turning unit drive control board 312, and the forward-turning operation of the page turning reading unit 1 is started.

As described above, in the page turning reading unit 1, the output of the encoder 152 of the turning roller 2 is fed back, so that the page turning reading unit 1 is controlled at a constant speed Vf along the document surface of the book document 92. It is moved toward the end position 1-C.

At this time, the LED 316 of the first reading sensor unit 9
Has already been turned on, and the first CCD 315 of the first reading sensor unit 9 has started reading the document information of the book document 92.

Here, as shown in FIG. 1, in the vicinity of the binding portion (center portion) of the book original 92 that is opened and set on the original placing surface 116, the warp of the original surface is so tight that the vicinity of this binding portion is close. It becomes difficult to read the document information accurately.

In addition, document information such as characters and images is not usually formed near the binding portion of the book document 92.

Therefore, in this MFDS, as shown in FIG. 34, in the vicinity of the binding portion of the book original 92, the effective information area signal SFGATE for the original information of the first CCD 315 is turned off, and the reading of the original information in the vicinity of the binding portion is masked. It is supposed to be done.

As described above, the mask area at the time of initial setting of the document information is + from the center of the central reference positioning portion 24.
Although set to be 10 mm, -10 mm, this mask area can be changed its setting value by key input of the book binding portion mask area setting key 608 of the operation display board 313, It can also be used for specially bound book manuscripts.

By the way, the document information of the book document 92 is read by the first reading sensor unit 9 until the page-turning reading unit 1 reaches the end position position 1-C. The first high-voltage power supply 320 is turned on at the frequency f1 when it reaches the vicinity of the center.

As a result, the above-described charge pattern is formed on the portion of the turning conveyance belt 8 that abuts the right page of the book document 92.

As described above, the page-turning conveyor belt 8 is not driven when the page-turning reading unit 1 is driven, and functions to press the book document 92.

In this way, when the page turning reading unit 1 is driven to the end position position 1-C and reading of the document information up to the reading area at the right end of the book document 92 is completed, the output of the first high voltage power supply 320 is output. When turned off, the main control board 310 gives a turning signal to the turning unit drive control board 312, and the page turning operation of the book document 92 by the page turning reading unit 1 is started.

At this time, if the document surface read by the first reading sensor unit 9 corresponds to the preset last read page of the book document 92, the main control board 310 does not output a turning signal, and The page-turning reading unit 1 is moved back to the home position 1 after finishing reading the last read page of the book document 92 without performing the above-described page-turning operation.
-Saved in A.

During the page-turning operation of the book document 92, the reverse-turning operation of the page-turning reading unit 1 is slow-started until the page-turning sensor 29 is turned on, and the book is electrostatically adsorbed on the turning-sheet conveying belt 8. The read-finished page of the original 92 (the right page in FIG. 1) is guided into the page storage section 7.

Then, the page turning reading unit 1 is further returned and moved toward the home position 1-A,
The area up to the center of the read-finished page of the book document 92 is turned into the page storage section 7.

During the page turning operation of the page turning reading unit 1, the first high-voltage power supply 320 is used to eliminate the charge pattern in the original attraction area of the turning conveyance belt 8.
Turns on at frequency f2.

In this way, the reading-finished page of the book original 92 that has been turned into the page storage unit 7 of the page turning reading unit 1 ends after the page turning reading unit 1 has passed the center of the book original 92. While reaching the position position 1-C, the page storage unit 7 is discharged and the page turning operation is completed.

The return speed Vrm of the page-turning reading unit 1 at the time of discharging the page is set to be higher than the speed Vf at the time of reading the original, that is, Vrm> Vf, and the high-speed page-turning operation is performed. Is being promoted.

The state of the page-turning operation is detected by the page-turning sensor 29.

That is, this MFDS is a page turning reading unit 1
Whether or not there is an abnormality is detected by checking ON / OFF of the page turning sensor 29 at each position, and if there is an abnormality, an abnormality processing operation is executed.

As this abnormal processing operation, a warning buzzer is activated, and, for example, when the original pages cannot be turned into the page storage unit 7, “page turning is impossible”, the original pages turned into the page storage unit 7 are If it cannot be ejected, a message such as "Page cannot be overlaid" is displayed on the operation display board
Displayed at 313, the page turning operation is stopped.

Further, in order to allow the user to confirm the page-turning state in which this abnormality has occurred, the location of the page-turning state abnormality is displayed on the operation display board 313.

Hereinafter, the reading and page turning operations of the second and subsequent pages of the book document 92 are sequentially started by the transfer request signal from the printer 300, and the reading operation and the page turning operation similar to those described above are performed. It is repeatedly executed until the final read page set in advance is reached.

Here, in the timing chart of FIG. 34, when the number of prints of the original is set to “1”, that is, the book original
For each reading of each of the 92 read pages,
The case where the page turning operation after the reading is executed is shown, but the number of prints of this document is "2".
In the case of the above settings, when the first original reading operation by the first reading sensor unit 9 is completed, the main control board 310 instructs the turning unit drive control board 312 instead of the turning signal. A reverse rotation signal is transmitted, the page turning reading unit 1 is returned at the speed Vr toward the home position 1-A, and at the same time as the return operation is completed, the second time the page turning reading unit 1 is turned on. The document reading operation is started.

Then, the document reading operation of the page turning reading unit 1 is repeatedly executed by the preset number of print sets of the document, and only when the number of this operation and the number of print sets match. The main control board 310 transmits a turning signal to the turning unit drive control board 312, and the page turning operation described above is executed.

In the following, the reading of the original image of the second and subsequent pages of the book original 92 and the page turning operation are sequentially started by the transfer request signal from the printer 300, and the reading operation is performed a number of times corresponding to the number of print copies as described above. ,as well as,
The page turning operation is repeatedly executed until a preset final read page is reached.

If the print scaling key 614 is set to scale the read original image, the scan speed Vf of the first reading sensor unit 9 is set.
However, by changing the speed according to the scaling ratio, the scaling of the original image in the sub-scanning direction is performed, and at the same time, by the first image processing board 314, the scaling process of the original image in the main scanning direction is performed. Is done.

On the other hand, in the double-sided mode of the two-page spread continuous reading mode as described above, the transmission timing of the transfer request signal from the printer 300 to the main control board 310 is set because the printer 300 performs double-sided printing of the original image. With respect to the operation other than that, the same operation as that of the two-page spread two-page continuous reading mode described above is executed.

Next, referring to FIG. 35, the spread one-page break reading mode will be described.

The two-page spread one-page break reading mode is a mode in which the left page and the right page of the book document 92 that has been opened are separately read to form an image, and a mode in which each of these images is printed on a different transfer sheet. There is a mode of printing on the front and back of one sheet of transfer paper (double-sided mode of this double-page spread reading mode).

Further, in this mode, either one of the operation of reading from the left page and the operation of reading from the right page of the book document 92 is selectively set by key input of the read start page selection key 603 of the operation display board 313. can do.

FIG. 35 shows a timing chart when the reading is started from the left page toward the book document 92.

The operation of this two-page spread page break reading mode is
The operation is substantially the same as the operation of the double-sided spread two-page continuous reading mode described above. The difference from the operation of the double-sided spread two-page continuous reading mode in the double-sided reading mode is that the transfer request signal from the printer 300 to the main control board 310 is different. The point is that it is sent page by page.
The page turning reading unit 1 is moved (scanned) from the left page to the right page of the book document 92 at a constant speed.

FIG. 36 shows a timing chart in the case of setting such that reading is started from the right page of the book document 92 in the double-page spread one-page break reading mode.

As is clear from this timing chart, when reading is started from the right page of the book document 92,
The book page 92 is programmed so that the moving speed of the page turning reading unit 1 for the left page where the reading is not performed is faster than the scanning speed Vf of the first reading sensor unit 9 for the right page. The reading time is shortened, that is, the performance of the reading function is improved.

Further, in the two-page spread page-reading mode, if a page to skip (skip) without scanning is set by the read skip page setting key 618, the page turning reading unit 1 for the read skip page is set. Is the scanning speed Vf of the first reading sensor unit 9 when reading
It is programmed to move at a faster speed and to immediately perform this read skip page turning operation (timing chart not shown).

By the way, generally, as shown in FIG. 35 and FIG. 36, from the printer 300 to the main control board 310,
Few printers can continuously request transfer request signals in the normal state.

Therefore, in the case of carrying out the two-page spread page break reading mode using such a general printer, it is realized by feeding two transfer sheets in a superposed manner on the printer side. Can be made.

In addition, here, when it is necessary to provide a certain distance between these two transfer sheets due to the resist between the transfer sheet and the photosensitive drum, the left page of the book original 92 is to be set. Side image data is sent to the printer as it is, and the image data on the right page side of the book document 92 is
This can be realized by delaying the transfer timing to the printer for a time corresponding to the distance between the transfer sheets through the delay memory.

A block diagram of an example of the latter case is shown in FIG. 37, and a timing chart thereof is shown in FIG.

In this example, the internal gates A and B on the main control board 310 delay the image data output to the printer through the delay memory by the time Td with respect to the image data directly output to the printer through the switch. It is configured to be.

Next, the double-sided mode in the double-page spread page-break reading mode will be described.

First, a case will be described in which the image data of the left and right two pages of the opened book document 92 is printed on the front and back sides of one transfer sheet.

In this case, since it is necessary to reversely convey the transfer paper on the printer 300 side, it may take some time from the end of printing the image data of the left page to the start of printing the image data of the right page. It costs.

Therefore, in this mode, when the page turning reading unit 1 finishes reading the left page of the book document 92 and reaches the vicinity of the binding portion, the driving of the page turning reading unit 1 is temporarily stopped.

Then, the printing of the left page image on the printer 300 side and the reverse conveyance of this transfer paper are completed, and the printer 30
When a transfer request signal is issued from 0 to the main control board 310, the stopped page turning reading unit 1 is driven again at a predetermined scan speed Vf, and the right page of the book document 92 is read. The image data of the page is transferred to the printer 300, the right page image is printed on the back surface of the transfer paper having the left page image printed on the front surface, and double-sided printing is performed.

  The timing chart at this time is shown in FIG.

Next, a description will be given of a double-sided mode in the case of forming an image by matching the relationship between the front and back of the printed transfer paper and the front and back of the document surface of the book document 92 in the two-page spread one-page division reading mode.

In this mode, if you want to start reading from the left page of book document 92,
The 300 is instructed to continuously feed two sheets, and the transfer sheet on which the left page image is printed is ejected as it is, while the transfer sheet on which the right page image is printed is reversed and conveyed, Prepare for printing the left-side image of the next page of the book original 92.

During this period, the MFDS side performs the page turning operation of the document page that has been read.

When the page turning operation on the MFDS side is completed, the reading operation for the next page is executed, and the read left page image is printed on the back side of the transfer paper that was previously printed with the right page image and reversed. Printed and discharged.

The right page image read at this time is printed on a newly fed transfer sheet.

This transfer paper is reversely conveyed like the previous transfer paper, and preparation is made for printing the left page image of the next page of the book document 92 on the back surface thereof.

By repeating such a series of operations, a transfer sheet on which an original image having the same page configuration as the book original 92 is printed can be obtained.

The above is an example of the operation in the book document reading mode.

Here, setting of a book document in the spread reading mode will be described.

In the connected device check of FIG. 29, if the printer 300 is capable of discharging the back side, the following display is made.

In other words, “If the book document is written horizontally (open left), open the first page you want to read and set it face up.” “If the book is written vertically (right open), open the first page you want to read. Please set it upside down. ”Instructing each setting method for horizontal writing and vertical writing of the book manuscript.

On the other hand, in the connected device check of FIG. 29, when the printer 300 is only capable of displaying and ejecting paper, the following display is performed.

In other words, “If the book document is written horizontally (open left), open the last page you want to read and set it upside down.” “If the book is written vertically (open right), open the last page you want to read. Please set it so that it is facing upwards. ”For each horizontal and vertical writing of the book manuscript.

In this MFDS, by setting the book original 92 according to the above-described instruction, the pages of the transfer paper to be ejected can be aligned regardless of the function of the printer 300 connected thereto.

In addition, there are two input methods for inputting the number of pages to be turned in this MFDS by the key input on the operation display board 313, and one of these input methods is used.
The user can select according to his or her preference.

One of the input methods is to set the reading total page setting key 60.
6 is a method for setting the total number of pages to be read, and other input methods are using a read start page setting key 604, a read last page setting key 605, etc.
This is a method of inputting the first page and the last page to be read.

No matter which of the above methods is used for inputting the number of pages to be turned in this MFDS, it is sufficient that the number of pages to be turned of the page turning reading unit 1 can be accurately calculated.

The method of calculating the number of page turns in each of the above methods will be described below.

First, a case where the total number of pages to be read is input will be described.

Here, if the total number of pages to be read is X and the number of pages to be turned is M, (X-2) / 2 = M + remainder when reading from the left page ... (X -1) / 2 = M + remainder ... By calculating the value of M from these equations, the number of times of turning can be obtained.

Next, the case where the first page to be read and the last page are input will be described.

Here, if the first page to be read is Y, the last page is Z, and the total number of pages to be read is X, then X = Z−Y + 1 .. Thus, the number M of turnings can be calculated.

By the way, as described above, this MFDS is configured so that a single device can selectively read a book document and a sheet document and form an image thereof.

The image reading mode for the book original is as described above, and the image reading mode for the sheet original in this MFDS will be described below.

As shown in FIG. 31, the sheet document reading mode includes a sheet document through mode, a sheet document scanning mode, and a sheet document manual opening / closing mode.

  First, the sheet original through mode will be described.

The sheet original through mode includes a single-sided original reading mode and a double-sided original reading mode. The double-sided original reading mode includes a same-position reading mode and another-position reading mode.

Selection of these modes is performed as shown in FIG.

First, in the single-sided original reading mode, as shown in FIG.
As shown in FIG. 42, when the sheet original 200 is set downward on the sheet original tray 94 and the start key 600 is pressed in this state, first, the power of the turning conveyance belt drive motor 61 is turned on to drive it. The roller 12 is rotated, and the turning conveyance belt 8 is rotated.

At this time, if there is no abnormality in each sensor and each input data, the paper feed clutch 128 is turned on, and the first belt support roller 9
2nd paper feed pulley 130 attached to 7 to feed belt
The sheet feed roller 96 is rotated via 127, and the sheet original 200
Are conveyed toward the paper feed separation pad 95.

The sheet separation pad 95 separates only the lowest one sheet original 200 from other sheet originals, and while being guided by the first conveyance guide 108 and the second conveyance guide 109,
The sheet is conveyed to a position in contact with the turning conveyance belt 8.

Here, the paper feed sensor 26 is provided on the second transport guide 109.
The sheet feeding sensor 26 detects the trailing edge of the sheet original 200, and then the sheet feeding clutch 128 is attached.
The sheet original 200 and the conveyance timing are set so that the switch is turned off.

On the other hand, during this period, as the turning conveyance belt 8 rotates, a high AC voltage is applied to the second bias roller 11 from the AC power source 35, and a striped charge pattern is formed on the turning conveyance belt 8.

As a result, the fed sheet originals 200 are attracted and conveyed by the turning conveyance belt 8.

The linear velocity of the turning and conveying belt 8 at this time is
It is designed to be changed to 360mm / s according to the set magnification when changing the magnification.

On the other hand, in this mode, the page turning reading unit 1
Is located at its end position 1-C,
The first reading sensor unit 9 sequentially reads the document information of the sheet document 200 conveyed by the turning conveyance belt 8 (pixel density is 400 dpi).

Then, the sheet document 200 that has been read by the third conveyance guide 110 and the fourth counter roller 103, the fifth counter roller 104, the sixth counter roller 105, the seventh counter roller 106,
The paper is held and conveyed, and is ejected from the paper ejection port 117 onto the paper ejection tray 23.

A paper discharge sensor 28 is attached to the third conveyance guide 110 near the paper discharge port 117, and a paper discharge jam of the discharged sheet original 200 is detected.

Then, when the reading operation of the first sheet original 200 is completed, the sheet feeding clutch 128 is turned on again at a predetermined sheet feeding timing, and the second sheet original 200 is fed, The reading operation similar to that described above is executed.

In this manner, when the sheet originals 200 set on the sheet original tray 94 are sequentially fed and read, the last (topmost) sheet original 200 is fed, and the sheet original sensor 25 is turned off, 2 The power source of the bias roller 11 is switched to an alternating high frequency high voltage, the charge pattern of the turning conveyance belt 8 is removed, and the final sheet original
After 200 is ejected, all MFDS operations are stopped.

The above reading operation is an operation in the case where a printer having a back surface paper ejection function is connected to the MFDS, and thereby page alignment ejection of the sheet original 200 and the printed transfer paper is realized.

If the printer connected to this MFDS has only the front surface discharge function, the sheet original tray 94
The sheet original 200 is set on the upper side, and the second original reading sensor unit 14 reads the sheet original 200, so that the sheet original 200 is read in the same manner as in the case of the printer having the back surface discharge function described above. Also, page alignment discharge of the printed transfer paper is realized.

Further, other operations when the printer having the front surface paper discharging function is connected are the same as those when the printer having the back surface paper discharging function is connected.

Next, the double-sided original reading mode in the sheet original through mode will be described.

In the double-sided document reading mode, a horizontally written sheet document is set on the sheet document tray 94 with the leading edge of the document facing downward.

This is because the first reading sensor unit 9 and the second reading sensor unit 14 do not have a memory,
This is because only mirror inversion in the main scanning direction can be used.

First, the basic operation of the same position reading mode in the double-sided original reading mode is the same as that in the single-sided original reading mode as shown in FIGS. 43 and 44, but in this mode, page turning reading is performed. Unit 1
However, when the document table 18 is located at the home position 1-A, and the document table 18 is at the same position as the second reading sensor unit 14, the reading of the document information on the front and back surfaces of the document 200 is the first of these. The reading sensor unit 9 and the second reading sensor unit 14 are simultaneously executed in parallel.

On the other hand, the basic operation of the different position reading mode in the double-sided original reading mode is the same as that in the single-sided original reading mode as shown in FIGS. 45 and 46, but in this mode, page turning reading is performed. Unit 1
It is located at the end position 1-C.

As is apparent from this, in this different position reading mode, the distance between the reading positions of the first reading sensor unit 9 and the second reading sensor unit 14 becomes larger than the length of the maximum size document, and therefore, these First reading sensor unit 9 and second reading sensor unit
The document information of the front and back surfaces of the sheet document 200 read in 14 is output in time series.

Next, the sheet scan mode in the sheet document reading mode will be described.

In this sheet scan mode, FIG. 47 and FIG.
As shown in the figure, the sheet document tray 94
0 is set upward, and in this state, start key 600
When is pressed, first, the power of the turning conveyance belt drive motor 61 is turned on, the drive roller 12 is rotated, and the turning conveyance belt 8 is rotated.

At this time, if there is no abnormality in each sensor and each input data, the paper feed clutch 128 is turned on, and the first belt support roller 9
2nd paper feed pulley 130 attached to 7 to feed belt
The sheet feed roller 96 is rotated via 127, and the sheet original 200
Are conveyed toward the paper feed separation pad 95.

The sheet separation pad 95 separates only the lowest one sheet original 200 from other sheet originals, and while being guided by the first conveyance guide 108 and the second conveyance guide 109,
The sheet is conveyed to a position in contact with the turning conveyance belt 8.

Here, the paper feed sensor 26 is provided on the second transport guide 109.
The sheet feeding sensor 26 detects the trailing edge of the sheet original 200, and then the sheet feeding clutch 128 is attached.
The conveyance timing of the sheet document 200 is set so that the is turned off.

On the other hand, during this period, as the turning conveyance belt 8 rotates, a high AC voltage is applied to the second bias roller 11 from the AC power source 35, and a striped charge pattern is formed on the turning conveyance belt 8.

As a result, the fed sheet originals 200 are attracted and conveyed by the turning conveyance belt 8.

The linear velocity of the turning conveyance belt 8 at this time is set to 360 mm / s, and when the leading edge of the sheet document 200 reaches the home position position 1-A, the turning conveyance belt 8 is set.
The rotation of is stopped.

On the other hand, in this mode, the page turning reading unit 1
Is located in its home position 1-A,
After the turning of the turning conveyance belt 8 is stopped, the page turning reading unit 1 is moved toward the end position 1-C by the turning unit driving motor 60 and turned by the first reading sensor unit 9 thereof. Sheet originals 20 conveyed by the conveyor belt 8
Document information of 0 is read sequentially (pixel density is 400dp
i).

At the time of reading this document information, an alternating high-frequency high voltage is applied to the first bias roller 3 by the first high-voltage power supply 320, and the charge pattern formed on the turning conveyance belt 8 is discharged.

This prevents the sheet document 200 from entering the page turning reading unit 1 when the page turning reading unit 1 returns.

The page turning reading unit 1 that has finished reading the sheet document 200 in this manner is returned toward its home position 1-A.

When the page turning reading unit 1 returns, the first reading sensor unit 9 causes the sheet original 200
Of the original document, the high voltage AC is applied to the first bias roller 3 from the first high-voltage power source 320, and a striped charge pattern is formed on the turning conveyance belt 8. 200 is attracted and fixed to the turning conveyor belt 8.

Then, after the above-described operation is repeated the set number of times, the turning conveyance belt drive motor 61 is turned on,
The turning conveyance belt 8 is rotated, and the sheet document 200 that has been read is discharged from the paper discharge port 117 onto the paper discharge tray 23.

A paper discharge sensor 28 is attached to the third conveyance guide 110 near the paper discharge port 117, and a paper discharge jam of the discharged sheet original 200 is detected.

Then, when the reading operation of the first sheet original 200 is completed, the sheet feeding clutch 128 is turned on again at a predetermined sheet feeding timing, and the second sheet original 200 is fed, The reading operation similar to that described above is executed.

In this manner, when the sheet originals 200 set on the sheet original tray 94 are sequentially fed and read, the last (topmost) sheet original 200 is fed, and the sheet original sensor 25 is turned off, The power supply of the 2-bias roller 11 is switched to the high-frequency AC voltage of the second high-voltage power supply 321, the charge pattern of the turning conveyance belt 8 is removed, and the final sheet document 200 is discharged, and then all the operations of the MFDS are performed. Is stopped.

Next, the sheet document manual opening / closing mode in the sheet document through mode will be described.

The operation of the sheet document manual opening / closing mode is as shown in FIGS. 49 and 50, in which the sheet conveying means and the sheet suction power sources are turned off in the operation of the sheet document scanning mode described above. In this state, the operator manually exchanges the sheet originals.

Below, page turning reading unit 1 in this MFDS
The operation control of will be described.

FIG. 51 shows an operation control circuit of the page turning reading unit 1 in this MFDS.

This operation control circuit controls the reciprocating drive of the page turning reading unit 1 and its speed control, and is incorporated in the page turning unit drive control board 312.

In FIG. 51, a microcomputer 520 (hereinafter,
The microcomputer (also simply referred to as a microcomputer) also performs the MFDS mode control and sequence control (details not shown).

As such a microcomputer 520, for example, μPD71054
Programmable interval timer 521 by G (hereinafter,
Just called a timer) is connected.

The timer 521 is for sending a pulse width modulation PWM output for controlling the speed of the turning unit drive motor 60 (DC motor) under the control of the microcomputer 520.

The cycle of this PWM control is 50 (μsec).
Control with 0-bit resolution.

An 8 MHz oscillator 522 is connected to the timer 521 and is configured to be supplied with a clock signal.

The turning unit drive motor 60 is the microcomputer 520.
Is connected via the driving transistors Q _{1 to} Q ₄ .

That is, when the transistors Q ₁ and Q ₄ are ON, the transistor Q
_{When 2} and Q ₃ are off, the turning unit drive motor 60 is supplied with a current that rotates clockwise (CW), the transistors Q ₂ and Q ₃ are on, and the transistors Q ₁ and Q ₄ are off. In this state, the turning motor 60 is turned counterclockwise (CC
W) is supplied with rotating current.

When the page-turning unit drive motor 60 rotates clockwise (CW), the page-turning reading unit 1 is moved forward, and when the page-turning unit drive motor 60 rotates counterclockwise (CCW), the page-turning reading unit 1 1 is set to be reactivated.

The rotation direction of the turning unit drive motor 60 is controlled by the CW signal and the CCW signal output from the ports PF6 and PF7 of the microcomputer 520, respectively.

Further, the turning roller 2 is directly connected to an encoder 152 that generates a pulse according to the rotation thereof.

Here, the encoder 152 generates two pulse signals having different phases according to the rotation amount and the rotation direction of the turning unit drive motor 60.

One is the A-phase encoder pulse ENCA, and the other is the B-phase encoder pulse ENCB.

The A-phase encoder pulse ENCA is a frequency division multiplexer 52.
It is input to the counter input terminal C1 of the microcomputer 520 via the.

As a result, the microcomputer 520 causes the A-phase encoder pulse E
The pulse interval of NCA is measured by a counter inside the microcomputer 520 (regulated by the oscillation frequency 10 MHz of the oscillator 525 of the microcomputer 520).

Also, the input signal to this counter input terminal C1 is an interrupt input, and during processing of the interrupt program, the value of the pulse interval measurement data of the A-phase encoder pulse ENCA is read, and based on this data, turning is performed. The rotation speed of the unit drive motor 60 is calculated, the motor control amount is calculated by the proportional / integral control calculation, and output (data loading to the timer 521) is performed.

Specifically, the interrupt input signal is given to the counter input terminal C1 by dividing the output of the A-phase encoder pulse ENCA by 1, 2, 4, 8 by the frequency division multiplexer 524 according to the target speed. .

Here, when the frequency is divided by 1, the first reading sensor unit 9 moves 0.116 mm by one pulse of the encoder 152, and the speed thereof is changed by the microcomputer depending on the interrupt interval.
Calculated inside 520.

Then, based on this calculated speed data,
The output timer value is determined by the integral calculation process.

Further, the A-phase encoder pulse ENCA and the B-phase encoder pulse ENCB are input to the input terminal PC3 of the microcomputer 520 via the flip-flop 526 and are used for detecting the phase difference between the two, and turned over by the phase difference. The rotation direction of the unit drive motor 60 is determined.

That is, the rotation direction of the turning unit drive motor 60 is determined by inputting the state of the B-phase encoder pulse ENCB to the port of the microcomputer 520 when the A-phase encoder pulse ENCA rises.

Next, speed control of the turning unit drive motor 60 will be described.

The speed control of the turning unit drive motor 60 is performed by PWM control.

First, when the page-turning reading unit 1 scans the scanner, that is, when the page-turning unit driving motor 60 rotates in the clockwise direction, the transistor Q ₁ is turned on, while the PWM output from the timer 521 causes the transistor 521 to pass through the gate 527. the Q ₄ is ON / OFF, turning unit drive motor 60
The turning unit drive motor 60 is rotated at a speed corresponding to the duty ratio of the PWM signal by causing a potential difference between the two terminals.

On the other hand, when the page turning reading unit 1 returns, contrary to the above case, the transistor Q ₃ is turned on, and the PWM output from the timer 521 causes the gate circuit 528 to operate.
The transistor Q ₂ is turned ON / OFF via the, and a potential difference in the opposite direction is generated between both terminals of the turning unit drive motor 60, and the turning unit drive motor 60 is rotated at a speed according to the duty ratio of the PWM signal. Let

(Effects of the Invention) According to the present invention, the page turning of a book document that is opened and placed with the document surface facing up is substantially orthogonal to the binding portion of the book document in the direction along the document surface. In a page turning apparatus for a book manuscript having a page turning means for moving in one direction, the page turning means sucks the uppermost page of the book manuscript and separates it from other pages in the movement in the one direction. The suction means, the separation means for separating the page sucked by the suction means from the suction means in the movement in the one direction, and the movement from the start of page turning to the vicinity of the binding portion in the movement in the one direction. A page storage unit that stores the page separated from the suction unit by the separation unit and discharges the page stored by the movement after the binding unit. The page storage unit stores the separated pages in a state of being separated from the suction unit, and the suction unit suctions the uppermost page and conveys the page toward the page storage unit. Is a belt-shaped suction-conveying member having an electric field applying means for applying an unequal electric field to the suction-conveying member, and the suction-conveying member is the topmost page due to the unequal electric field applied by the electric field applying means. Since it is adsorbed, the pages of the book document can be surely turned over, and the device can be downsized.

Also, having a plurality of rollers for supporting the suction conveyance member,
Of the plurality of rollers, the part of the roller that guides the uppermost page toward the page storage section that supports the suction conveyance member is the separating means, so that no new page separating means is required. The book page can be surely turned over, and a compact and inexpensive page turning apparatus can be provided.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a multi-function document scanner (MFDS) embodying the present invention, FIG. 2 is a schematic cross-sectional view of the drive system of the MFDS, and FIG. 3 is a schematic view of the drive system of the MFDS. FIG. 4 is a plan view, FIG. 4 is a perspective view of an end portion of the page turning reading unit in the MFDS, FIG. 5 is a sectional view of a roller end portion showing a supporting structure of rollers constituting the page turning reading unit, and FIG. FIG. 7 is a side view showing a lock release mode of the transport unit lock device in the MFDS, FIG. 7 is a side view showing a lock start operation mode of the transport unit lock device, and FIG. 8 is a lock completion mode of the transport unit lock device. FIG. 9 is a side view, FIG. 9 is a perspective view showing the appearance of the printer equipped with the MFDS, FIG. 10 is a perspective view showing the appearance of the printer equipped with the MFDS when the transport section is opened, and FIG. 11 is the above page. Inside the turning reading unit Perspective view of the vicinity of the end of the first read sensor units disposed, FIG. 12 the first
FIG. 13 is a side view near the end of the reading sensor unit, FIG. 13 is a partially enlarged sectional view showing a supporting structure of the end of the first reading sensor unit, and FIG. 14 is the inner side of the turning roller 2 of the page turning reading unit. Side view of Fig. 15 shows the above MF
FIG. 16 is a cross-sectional view showing the structure of the central reference positioning portion of the document placement surface in DS, FIG. 16 is a plan view of the operation display board in the MFDS, FIG. 17 is a schematic cross-sectional view of the printer, and FIG. FIG. 19 is a plan view of the writing unit, and FIG. 19 is an operation mode diagram of a switching claw that switches the transfer paper transport path of the printer.
Figure 20 is a schematic sectional view of the page turning reading unit,
FIG. 21 is a sectional view showing the structure of the first reading sensor unit, and FIG. 22 is a schematic sectional view showing an operating mode of the MFDS.
FIG. 23 is an explanatory view of the turning conveyance belt in the above MFDS,
FIG. 24 is a partial perspective view showing the page turning operation of the above-mentioned turning conveyor belt, FIG. 25 is a diagram showing the pitch characteristics of the carrying force of the above-mentioned turning conveyor belt, and FIG. 26 is the pitch of the attraction force of the above-mentioned turning conveyor belt. FIG. 27 is a diagram showing the characteristics, FIG. 27 is a diagram showing the applied voltage characteristics of the conveying force of the above-mentioned turning conveyor belt, FIG.
Figure is a diagram showing the applied voltage characteristics of the attraction force of the above-mentioned turning conveyance belt, Figure 29 is the electrical block diagram of the above MFDS, Figure 30 is the mode transition diagram during the book document reading mode operation of the above MFDS, and Figure 31. Is a mode transition diagram of the MFDS sheet original reading mode operation, FIG. 32 is a flowchart showing the switching operation of each mode, FIG. 33 is a flowchart showing the operation of the book original reading mode, and FIG. 34 is a book original. FIG. 35 is a timing chart showing the operation of the spread 2-page continuous reading mode in the reading mode, and FIG. 35 is a timing chart showing the operation of the spread 1-page break reading mode in the book document reading mode.
FIG. 36 is a timing chart showing the operation when the book page is set to be read from the right page in the double-page spread reading mode, and FIG. 37 is the transfer timing of the data read in the double-page spread reading mode. 38 is a block diagram of a circuit for delaying the data, FIG. 38 is a timing chart showing the operation of the circuit for delaying the transfer timing of the data read in the spread one-page break reading mode, and FIG. 39 is the spread one-page break reading mode. FIG. 40 is a timing chart showing the operation of the double-sided mode, FIG. 40 is a flowchart showing the switching operation of the sheet original through mode in the sheet original reading mode, and FIG. 41 is a flow chart showing the operation of the single-sided reading mode in the sheet original through mode. 42, FIG. 42 is a timing chart showing the operation in the single-sided reading mode, FIG. 43 is a flowchart showing the operation in the same position reading mode in the sheet original through mode, and FIG. 44 is the operation in the same position reading mode. Timing chart shown, No.
FIG. 45 is a flow chart showing the operation of another position reading mode in the sheet original through mode, FIG. 46 is a timing chart showing the operation of the other position reading mode, and FIG. 47 is a sheet original scanning mode in the sheet original reading mode. A flow chart showing the operation,
FIG. 48 is a timing chart showing the operation of the sheet original scan mode, FIG. 49 is a flowchart showing the operation of the sheet original manual opening / closing mode in the sheet original reading mode, and FIG. 50 is an operation of the sheet original manual opening / closing mode. The timing chart shown in FIG. 51 is a scanning control circuit diagram of the page turning reading unit. A: Multi-function document scanner (MFDS), 1 ... Page turning unit, 1-A
...... Home position position, 1-C …… End position position, 8 …… Turning conveyance belt, 9 …… Turning conveyance belt, 14 …… Second reading sensor unit, 24 …… Central reference positioning part, 52 …… Turning Unit drive belt, 60
…… Turning unit drive motor, 61 …… Turning conveyance belt drive motor, 92 …… Book original, 200 …… Sheet original, 300 …… Printer, 310 …… Main control board, 311
…… Turning conveyor belt drive control board, 312 …… Turning unit drive control board, 313 …… Operation display board, 314
...... First image processing board, 317 ...... Second image processing board.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI H04N 1/107 (72) Inventor Tetsuya Fujioka 1-3-3 Nakamagome, Ota-ku, Tokyo Ricoh Co., Ltd. (56) Reference Reference JP-A-63-67191 (JP, A) Actual development 62-142561 (JP, U) Actual development 57-147065 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H04N 1/04-1/207 B42D 9/04 B65H 1/00-3/68 G03B 27/58-27/64 G03G 15/00 107

Claims (3)

(57) [Claims] 1. A page original that is opened and placed with the original surface facing upward is turned by moving in one direction along the original surface and substantially orthogonal to the binding portion of the book original. In a page turning apparatus for book originals provided with page turning means, the page turning means adsorbs an uppermost page of the book original in moving in the one direction and separates it from other pages. Separating means for separating the page adsorbed by the adsorbing means from the adsorbing means in the movement in the direction, and separating by the separating means in the movement from the start of turning the page in the movement in the one direction to the vicinity of the binding portion. A page storage unit for storing the page separated from the suction means and discharging the stored page by the movement after the binding unit, Over di storage unit, the page turning apparatus of a book document, characterized in that for accommodating the separated the pages in a state of being isolated from the suction means. 2. The page turning apparatus for book originals according to claim 1, wherein said suction means is a belt-shaped suction conveyance member for adsorbing the uppermost page and conveying it to said page storage section. The suction conveyance member has an electric field applying means for applying an unequal electric field, and the suction conveyance member sucks the uppermost page by the unequal electric field applied by the electric field applying means. Page turning device. 3. The page turning apparatus for book originals according to claim 2, further comprising a plurality of rollers for supporting the suction conveyance member, wherein the uppermost one of the plurality of rollers is directed toward the page storage section. A page turning apparatus for book originals, wherein a portion of a roller for guiding the page supporting the suction conveyance member is the separating means.