JPH0451059A - Image forming method - Google Patents

Abstract

PURPOSE:To prevent the generation of a blank sheet by sequentially forming images from the surface of a transfer sheet successively from the reading starting page of an original reading means, when an automatic both-side copy for forming picture information on both sides of the transfer sheet is carried out. CONSTITUTION:In the image forming method of an image forming device having page turning over means 1A - C turning over the page of a book original 92 opened and placed at an original reading position on an original placing surface 116, one by one, page and also serving as original reading means 1A - C scan ning the opened original surface of the book original 92 and reading out original information, the image is sequentially formed from the surface of the transfer sheet, in the order from the reading starting page of the original reading means 1A - C, when the automatic both-side copy for forming the picture information on both sides of the transfer sheet is carried out. Thus, the image can be sequen tially and desirably formed from the surface of the transfer sheet, in the order from the reading starting page, and the generation of a blank transfer sheet can be eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an image forming method for a copying machine, facsimile, etc., which is equipped with a book document reading device having a page-turning reading function of a book document.

(Prior Art) As a document reading device in a copying machine, facsimile, etc., a sheet document is automatically conveyed to a document reading position, the document information is read, and the read document is automatically ejected from the document reading position. Automatic document feeders (ADF) are known.

In this way, if the document is a sheet document, the document information can be automatically read by installing an ADF, but if the document is a book document, an automatic page turning mechanism can be implemented. Due to the current situation, it is currently only possible to turn the pages of a book manuscript manually.

In view of the current situation, various methods and means have been proposed to automate the time-consuming process of reading book manuscripts.

However, many of the above-mentioned conventional techniques are only proposals based on ideas, and have not yet reached a level where they can be realized.

For example, there is one conventional technique related to automatic reading of book manuscripts.

JP-A-54-21836 ``Reading device for copying machine''.

Japanese Unexamined Patent Publication No. 61-284492 ``Automatic page changing device for book-like originals'', Japanese Unexamined Patent Application Publication No. 56-60294 No. R - Turning device''.

JP-A No. 60-122932 ``Image forming apparatus'', JP-A 63-47197 ``Automatic page turning device'', JP 62-273892 ``Page turning device'', etc. have been proposed.

In this way, there are many proposals that are beyond the realm of ideas. There is also a proposal that has the possibility of are doing.

However, when a two-page spread book document is placed face down and moved as in this device, the surface of the document will rub against the document placement surface due to the weight of the book document itself, causing the page turning operation to be affected. The disadvantage is that it is unreliable.

Furthermore, this conventional device has the disadvantage that the structure of the page turning device alone is quite large.

In addition, among the above-mentioned conventional technologies, there is also a page-turning device that is configured to turn the document information side of a spread-open book document upward and turn the page using negative pressure caused by suction, such as a roller or an arm. Conventional page turning devices have the disadvantage that the large page turning device is configured to move in the space above the book document, resulting in a fairly large device.

(Problem to be solved by the invention) By the way, the manuscript information of the book manuscript is mostly (90%)
(above) are printed on both the front and back sides of a single sheet of paper.

Therefore, the reading start page of a book document placed with the document side facing upward at the document reading position on the document placement surface can be either the left or right page.

For this reason, if the manuscript information is copied sequentially from the front side of the transfer paper in the original page order of such a book manuscript, the front side of the first transfer paper will be blank and there will be waste on the transfer paper. There is a problem that occurs.

In addition, if the manuscript information of such a book manuscript is copied sequentially from the front side of the transfer paper, there is a problem that the front and back of the pages of this transfer paper do not match the front and back of the pages of the original manuscript information of the book manuscript. be.

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to properly copy both sides from the reading start page when reading manuscript information of a book manuscript, so that desired images can be printed on both sides of transfer paper. An object of the present invention is to provide an image forming apparatus that can form images of .

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a system for turning over the pages of a book document placed spread-open at the document reading position on the document placement surface one by one. In an image forming method of an image forming apparatus equipped with a page-turning means and a document reading means that scans the spread document surface of the book document to read the document information, ``the above-mentioned image information is printed on both sides of the transfer paper. At the time of automatic double-sided copying, images are sequentially formed on the surface of the transfer paper starting from the page from which the document reading means starts reading.

In addition, in order to solve the above-mentioned problems, the present invention provides a page turning means for turning over the pages of a book manuscript placed spread-open at a manuscript reading position on a manuscript placing surface one by one; A document reading means that scans the spread document surface to read the document information, and a reading start that specifies from which page of the document information of the two spread pages left and right pages of the book document to start reading. In an image forming method of an image forming apparatus equipped with a page selection means, during automatic double-sided copying in which the image information is formed on both sides of a transfer sheet, original page remains of the book manuscript are read by the original reading means. The configuration is such that copies are made sequentially from the start page onto transfer paper.

(Function) According to the present invention, during automatic double-sided copying in which the image information is formed on both sides of the transfer paper, images are sequentially formed from the front surface of the transfer paper starting from the page from which the document reading means starts reading.

Further, according to the present invention, during automatic double-sided copying in which the image information is formed on both sides of the transfer paper, the original pages of the book manuscript are sequentially copied onto the transfer paper from the page that the original reading means starts reading. be done.

(Example) Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

However, in order to avoid complicating the explanation, illustrations and disclosures thereof will be omitted to avoid complicating the explanation, as well as the configuration and operation within the range that can be clearly recalled from the description of this specification, as well as the above-mentioned and other objects and novel features of the present invention. , or simplify it.

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

FIG. 1 shows the implementation of the invention. 1 is a schematic cross-sectional view of a multi-function document scanner A (hereinafter referred to as 'MFDS').

In FIG. 1, the turning conveyor belt 8 is
2, tension roller 13, first belt support roller 97
, second belt support roller 98, third belt support roller 9
9. It is supported by a fourth belt support roller 100 and a fifth belt support roller 101.

At this time, the turning conveyor belt 8 carries the turning reroller 2 of the page turning reading unit 1, the first bias roller 3, the tenth roller 4. It is supported so as to surround the page turning/reading unit 1 via a 20th roller 5 and a presser 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 conveyor belt 8 to press the document surface of the book document 92.

The belt tension sensor 32 is connected to the tension roller 13
The tension of the conveyor belt 8 is detected from the amount of movement.

On the other hand, a sheet original 2
00, a sheet document side guide 93 for adjusting the setting position of the sheet document 200 in the side direction, and a sheet document tray 94 for setting the sheet document 200.
A paper discharge tray 23 on which 0 is placed is provided.

In addition, in the paper feed section 21 of 1MFDS (upper right of Fig. 1),
A sheet document sensor 25 that detects whether or not a sheet document 200 is set, a paper feed roller '96 and a paper feed separation pad 95 that separate and feed the sheet document 200 one by one, and a feed sensor that measures the timing of feeding the sheet document 200. A paper sensor 26 is disposed, and a first conveyance guide 108 and a second conveyance guide 1 that constitute a conveyance path for the sheet original 200 are provided.
09 is installed.

Further, a second bias roller 11 for charging the sheet document 200 when conveying the sheet document 200 is provided on the outside of the flip-up conveyance belt 8 slightly to the left of the belt support roller 97, and a bias opposing roller for support is provided inside the second bias roller 11 for charging when conveying the sheet document 200. There are 102.

Furthermore, a conveyance guide claw 115 is provided at the lower end of the second ml conveyance guide 109 to assist in conveyance of the sheet document 200.

Furthermore, the fourth belt support roller 100 has a sixth opposing roller 105. A seventh opposing roller 106 is attached to the fifth belt support roller 101, a paper ejection roller 107 is attached to the drive roller 12,
They are respectively disposed on the outside of the flip-up conveyor belt 8, sandwiching the flip-up conveyor belt 8.

Further, a sheet document 200 is placed on the outside of the turning conveyor belt 8 from the third belt support roller 99 to the drive roller 12.
A third conveyance guide 110 forming a conveyance path is provided.

Here, from the second belt support roller 98 to the third belt support roller 99, the document placement surface 116 on the top surface of the document table 18 is used as a conveyance path for the sheet document 200.

This document placement surface 116 is formed in black in order to facilitate detection of the leading edge of the book document 92 when detecting the size of the book document 92 by pre-scanning.

On the other hand, in the paper discharging section 22 of the MFDS at the upper left in FIG. 1, there is a paper discharging sensor 28 in front of the paper discharging roller 107, which detects the presence or absence of a jam when the sheet document 200 is discharged.

Furthermore, a paper discharge separating claw 111 is formed below the paper discharge port 117 of the paper discharge section 22, and assists in smooth paper discharge of the sheet document 200.

A second belt support roller 98 is attached to the document table 18 of the MFDS.
A fourth opposing roller 103 is disposed below the third belt support roller 99, and a fifth opposing roller 104 is disposed below the third belt support roller 99. 2, the first opposing roller 15 is below the presser roller 6, and the second opposing roller 1 is below the presser roller 6.
6 is.

A second reading sensor unit 14 is disposed below the first reading sensor unit 9, respectively.

Further, when the page turning reading unit l is at the end position position 1-C (the stopping position of the page turning reading unit 1 in the reading mode of the sheet original 200), a third reading sensor unit 9 is located under the first reading sensor unit 9. A book size upper limit sensor 33 is provided below the opposing roller 17 and the turning roller 2, respectively.

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

The center reference positioning section 24 includes a center positioning plate 113 that contacts the spine of the book document 92 when the book document 92 is placed thereon, and a center positioning plate 113 that provides a tendency to rise relative to the center positioning plate 113. Spring 11
4 and a book document sensor 27 that detects the amount of downward displacement of the central positioning plate 113 when the book document 92 is placed thereon.

At the bottom of the document table 18 configured in this way, an MFDS
A stand 91 is provided to support the device substantially horizontally.

On the other hand, a transport unit locking device 140 having a built-in transport unit lock sensor 31 is disposed on both sides of the portion of the transport unit 19 that contacts the document table 18, and controls the open/closed state of the transport unit 19 and document table 18. Detected.

As mentioned above, this MFDS has 200 sheet originals.
The device is configured as a document reading device that has both automatic document feeding and reading functions as well as book document reading and automatic page turning functions.

Next, the configuration of the drive system in this document reading device will be described with reference to FIGS. 2 to 4.

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.

The fourth WI is a perspective view of the end of the page turning reading unit 1.

2 to 4, in the page turning reading unit 1, the scanning pipe 51 of the turning unit drive plate 49 is inserted into a pair of scanning rods 50 that are horizontally suspended in parallel to the front side and the back side of the MFDS. As a result, the MFDS is slidably supported along the left and right direction of the MFDS.

The ends of each scanning rod 5o are fixed to the right side plate 58 of the transport section and the left side plate 59 of the transport section of the MFDS.

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

A driving pulley 62 and a driven pulley 63 are fixed to each of the first shaft 64 and the second shaft 65 on the front side and the back side thereof, and the driving pulley 62 and the driven pulley 63 Two turning unit drive belts 52 are suspended from each other, with 63 as a pair.

As shown in FIGS. 3 and 4, this page turning reading unit 1 is constructed by a drive belt fixing portion 53 of a turning unit drive plate 49, and a drive belt fixing plate 54 and a drive belt fixing screw 55. 52, and is driven by the rotation of this turning unit drive belt 52.

Further, a first gear 66 is fixed to the first shaft 64 on the back side thereof, sandwiching the rear side plate 57 of the conveying section, and this first gear 66 is fixed to the output shaft of the turning unit drive motor 60. The rotation of the turning unit drive motor 60 is transmitted to the second gear 67, and the rotation of the turning unit drive motor 60 is transmitted to the driving pulley 62, the turning unit driving belt 52, the driven pulley 63, and
The page turning reading units 1 are respectively driven.

On the other hand, as shown in FIG.
0 and the third shaft 121° drive roller 1 coaxially fixed
2 and a fourth shaft 122 fixed coaxially with the paper feed roller 9
The seventh shaft 125 is coaxially fixed to the belt supporting roller 97, and the eighth shaft 126 is coaxially fixed to the first belt support roller 97.
They are each rotatably supported between a transport section front side plate 56 and a transport section rear side plate 57.

The fourth shaft 122 holds the rear side plate 57 of the conveying section,
A third gear 68 is fixed to the rear side thereof.

Further, 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 flipping conveyor belt drive motor 61 is the fifth gear 73 .

Further, the fourth gear 69 is meshed with the third gear 68, and sequentially transmits the rotation of the turning conveyor belt drive motor 61 to drive the drive roller 12 and rotate the turning conveyor belt 8.

In addition, as shown in FIGS. 2 and 3, the eighth shaft 1
26, a second paper feed pulley 1 is installed on the back side of the rear side plate 57 of the conveyance unit.
30 is connected to the first paper feed pulley 12 via a paper feed clutch 128 on the back side of the rear side plate 57 of the conveyance unit.
9 are fixed, respectively, and the second paper feed pulley 130
A paper feed drive belt 127 is connected to the first paper feed pulley 129 and the first paper feed pulley 129.
is suspended.

As a result, the rotation of the first belt support roller 97 rotated by the rotation of the flipping conveyor belt 8 is caused by the rotation of the eighth shaft 126. Second paper feed pulley 130, paper feed drive belt 127
, are sequentially transmitted to the first paper feed pulley 129, and then to the input side of the paper feed clutch 128.

Further, the paper feed clutch 128 is activated by a control signal sent from the main control board 31o (see FIG. 50), and the seventh shaft 125 and the paper feed roller 96 are driven.

On the other hand, the first opposing roller 15, second opposing roller 16, and third opposing roller 17 shown in FIG.
Moreover, they are each driven at the same circumferential speed.

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

In FIGS. 1 to 4, the first lunitz upper plate 4
0 and the second turning unit side plate 41 are arranged opposite to each other at a position sandwiching the turning conveyor belt 8. Between the first turning unit side plate 40 and the second turning unit side plate 41, there is a , a turning roller 2, a first bias roller 3, a tenth roller 4, a twentieth roller 5, and a presser roller 6 are each rotatably supported.

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

Therefore, to explain this using the 10th-layer 4 as an example, the 10th-layer 4 has both ends fixed to the first turning unit side plate 40 and the second turning unit side plate 41, as shown in FIG. The fifth shaft 123 is inserted into the hollow part of this tenth-ra 4 made of a hollow shaft.
This 10th
- By supporting both ends of the roller 4, it is rotatably supported with respect to the fifth shaft 123.

Here, these reroller 2, first bias roller 3, 10th roller 4, 20th roller 5, and presser roller 6
does not rotate itself, but is rotated only by the rotation of the flipping conveyor belt 8.

Further, on the outside of the first turning unit side plate 4o and the second turning unit side plate 41, a rotation support rod 42 (configured in the same way on both sides) is provided at a longitudinally extending position of the first reading sensor unit 9 shown in FIG. ) are each rotatably supported.

Therefore, to explain the support structure for only one side of this rotation support rod 42, this rotation support rod 42 consists of a sliding pipe 43, a second spring retaining pawl 48, as shown in FIG.
, are configured integrally with the upper limit detection section 76.

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

This tilt correction spring 44 is in its natural state.

That is, when no external force is applied to the tilt correction spring 44, the axial direction of the sliding pipe 43 (vertical direction in FIG. 4) and the optical axis direction of the reading optical system of the first reading sensor unit 9 (first reading The sensor unit 9 is configured to match the movement direction (details will be described later) with respect to the first turning unit side plate 40 and the second turning unit side plate 41.

As a result, when the first turning unit side plate 40 and the second turning unit side plate 41 rotate integrally around each rotation support rod 42, the tilt correction spring 44 causes the first turning unit side plate 4 to rotate as a unit.
A rotational force is always applied to the 0 and 2nd turning unit side plates 41 to return them to the initial state, and these 1st and 2nd turning unit side plates 41
Turning unit side plate 40 and second turning unit side plate 4
1 is corrected in a timely manner.

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

The upper end of this sliding support rod 46 is connected to the upper Rondo support plate 7o.
Furthermore, the lower ends of the sliding support rods 46 are fixed to the lower Rondo support plate 71, respectively.

Further, a first spring retaining pawl 47 is formed on the upper Rondo support plate 70, and a second spring retaining pawl 48 is formed on the upper part of the sliding pipe 43. Both ends of the upper and lower springs 45 of the turning unit, which are mounted between the sliding pipe 43 and the upper Rondo support plate 70, are respectively locked by the spring retaining claws 48.

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

At this time, a sliding force is acting on the sliding pipe 43 to return it to the above-mentioned normal state due to the elasticity of the turning unit upper and lower springs 45 that constantly press the second spring retaining pawl 48 downward.

Further, the upward sliding range of the sliding pipe 43 is determined by the scan cutoff sensor 34 disposed on the turning unit drive plate 49 detecting the upper limit detection section 76 provided on the sliding pipe 43. The upward sliding position of the sliding pipe 43 is set to be the limit position.

On the other hand, the turning unit drive plate 49 includes, as shown in FIG. 4, an upper rod support plate 7o, a lower rod support plate 71, a first spring stopper 47, a scanning pipe 51, a drive belt fixing part 53, and a lower rod support plate 7o.

It is formed integrally with the home detection filler 75.

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

Furthermore, the scanning pipe 51 of this turning unit drive plate 49 is fitted to the scanning slot 5° so as to slide smoothly.

As a result, as described above, the turning unit drive belt 52 is driven, and the page turning reading unit 1 is
When the home position 1-A is reached, the home sensor 30 shown in FIG. 3 is configured to detect the home detection filler 75 of the scanning pipe 51.

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

FIGS. 6 to 8 are schematic diagrams showing the configuration of one of the transport unit locking devices 140 (same configuration on both sides) disposed on both sides of the MFDS.

The transport section locking device 140 includes a lock release solenoid 132, a lock rod 134, and the like.

In FIGS. 6-8, a lock release solenoid 1' door 132 is connected to one end of a lock release solenoid arm 133.

The other end of the lock release solenoid arm 133 is rotatably supported by one end of a lock rod 134.

Unlocking solenoid arm 13 of this locking rod 134
An electromagnetic lock 141 is arranged on the side of the side facing 3.

Further, at the other end of the lock rod 134, a lock pawl 134a is formed which is bent into a key pawl shape toward the side where the lock release solenoid arm 133 is disposed.

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

The other end of this lock spring 135 is connected to a part of the conveying section 19, thereby giving the lock rod 134 the ability to rotate once clockwise in FIG. 6.

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

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

In FIG. 6, when the conveyance section 19 is closed while being pushed down, the lower end of the lock claw 134a of the lock rod 134 comes into contact with the lock pin 139, and the lock rod 134 moves toward its rotating section 136, as shown in FIG. is rotated once counterclockwise using the axis of rotation.

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

Also, when the transport section 19 is locked, the lock rod 13
The locking claw 134a of 4 locks the transport section lock sensor 3.
1 is activated.

This unlocking of the transport section 19 is executed by pressing the open key 620 on the operation display board 313 shown in FIG. 16.

That is, the open key 620 of the operation display board 313
When pressed, the lock release solenoid 132 is activated, the lock rod 134 is rotated counterclockwise about the rotating part 136, and the lock pawl 134a of the lock rod 134 is disengaged from the lock pin 139, and the transport (not shown) is released. The transport section 19 is opened upward by the opening/closing spring (see FIG. 10).

However, this open key 620 is programmed not to operate (do not accept input) during a series of page turning scans of the book document 92, during reading and scanning, and when the sheet document 200 is being conveyed. ing.

In addition, when the oven key 620 does not receive any input, the electromagnetic lock 141 is activated, and the electromagnetic lock 141 locks the lock rod while the lock claw 134a remains engaged with the lock pin 139. The rotation of 134 is restricted.

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

FIG. 10 shows the transport section 1 of this MFDS as described above.
9 is shown in an open state.

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

11 is a perspective view of the vicinity of the end of the first reading sensor unit 9, FIG. 12 is a side view of the vicinity of the end of the first reading sensor unit 9, and FIG. 13 is a perspective view of the vicinity of the end of the first reading sensor unit 9. It is a detailed sectional view.

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

As shown in FIG. 11, the first reading sensor unit 9 includes a reading sensor bracket 1 formed in a U-shape.
46, and is arranged to be vertically movable with respect to the reading sensor bracket 146.

The reading sensor bracket 146 has both ends connected to the first turning unit side plate 40 and the second turning unit side plate 41.
By being fixed to, it is configured integrally with the page turning reading unit 1.

A reading sensor stand 148 is fixed downwardly slightly inside the end of the reading sensor bracket 146.

The lower end of this reading sensor stand 148
As shown in the figure, it is fitted into a boss 149 formed at the end of the first reading sensor unit 9.

Thereby, the first reading sensor unit 9 is supported via 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 configured to be prevented from coming off from each other by a flange-like hook formed at the lower end of the reading sensor stud 148.

Further, a reading sensor spring 147 is mounted between the base of the reading sensor stud 148 of the reading sensor bracket 146 and the base of the boss 149 of the first reading sensor unit 9. The force imposes a downward displacement habit on the first reading sensor unit 9.

As a result, this first reading sensor unit 9 is always located at the lowest part of the page turning reading unit 1,
For example, when receiving an external force due to unevenness on the surface of the book manuscript 92, the book manuscript 92 can be
It moves up and down smoothly along the unevenness of the surface of 2.

Further, at the end of the first reading sensor unit 9, a first
1, the reading sensor release solenoid 15 is activated via the reading sensor release solenoid arm 151.
0 is installed.

As shown in FIG. 12, this reading sensor release solenoid 150 is fixed to the first turning unit side plate 4o, and allows the page turning reading unit 1 to be moved without the first reading sensor unit 9 performing a document reading operation. This reading sensor release solenoid 15 is activated when the page is turned, for example, when an unread page is being scanned blankly, and when returning from the sheet document scan mode.
0 is activated.

When this read sensor release solenoid 150 is activated, it resists the elasticity of the read sensor spring 147 and
The first reading sensor unit 9 is moved upward, and its document scanning surface is retracted (separated) from the surface of the document.

This first reading sensor unit 9 is connected to the turning roller 2.
A signal from the encoder 152 generated by the rotation of the image sensor 152 is used as a reference signal for reading the image.

The turning roller 2 and the encoder 152 are constructed as shown in FIG. 14.

FIG. 14 shows a side view of the rear side of the turning roller 2. As shown in FIG.

In FIG. 14, at the rear end of the turning roller 2,
A crown-shaped fish 153 is provided.

The fissure 153 is configured by forming slits of the same width at equal intervals on the circumference.

The encoder 152 is fixed to the second turning unit side plate 41 so as to sandwich the fish 153 vertically.

As a result, this encoder 152 controls the turning roller 2
According to the rotation of the encoder 152, the fiber 153 periodically interrupts the detection optical path of the encoder 152, thereby generating a reference signal for image reading by the first reading sensor unit 9.

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

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

This central reference positioning portion 24 serves as a reference position when reading and scanning the book original 92 and when scanning and turning pages.

As shown in FIG. 1, the central reference positioning section 24 is configured in a groove formed in the center of the document placement surface 116.

In this groove, a central positioning plate 113 is placed on the document placement surface 1.
16 so that it can be moved up and down.

The center positioning plate 113 is always given the habit of rising by a center positioning spring 114 disposed at its lower part.

The upward movement of the center positioning plate 113 due to this habit is caused by a stopper 1 formed at the edge of the groove on the document placement surface 116.
18, the stopper claw 119 of the central positioning plate 113 comes into contact with the center positioning plate 113, thereby stopping the movement at the position indicated by the broken line in FIG.

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

That is, when the spine (binding portion) of the book original 92 is placed on the center positioning plate 113 in the groove, the center positioning plate 113 is pushed downward by the book original 92's own weight.

As a result, the book document sensor 27 disposed on the side of the groove of the document placement surface 116 detects the movement of the central positioning plate 113, and the setting of the book document 92 is recognized.

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

This operation display board 313 is as shown in FIG.
A large number of input keys are arranged.

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

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

The enter key 601 is pressed to confirm the input when inputting a selection manually using the numeric keypad or on the liquid crystal display panel.

A numeric keypad 602 is used to set the number of copies of the document to be printed, the number of pages to be turned, and the like.

The reading start page selection key 603 is pressed to the “left” when facing the book manuscript 92 in the book manuscript reading mode.
"Right" This key selects which page to start reading from, and each time you press this key,
The left and right sides of the reading start page of the book manuscript 92 are switched.

The starting page for reading when this key is initially set is:
The "left" page is set, and whether the reading start page selected by this key is on the left or right side of the book manuscript 92 can be determined by the two reading start page display LEDs 6.
31 is displayed depending on which one is lit.

The total read 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.

To set the total number of read pages of the book manuscript 92, press the total read page setting key 606 and press the numeric keypad 602.
After inputting the number of pages, it is confirmed by pressing the enter key 601, and this confirmed value is displayed on the liquid crystal display panel 630.

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

Also, each time this key is pressed, the display on the book size display LED 632 is switched in the order of "Auto", "Standard", and "Irregular (-1 manual)".

The mode displayed by this book size display LED 632 is selected.

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

Here, the book size key manual mode has "Fixed" and "Irregular (m input)", and the book size is A.
Only in the case of 5, B5, and A4, by selecting "standard", the book size can be input using the standard book size selection key 619.

Each time this standard book size selection key 619 is pressed, the standard book size display LED 633 changes to “A”.
5" - rB5J rA4J, 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 LED 633 displays "A4"
It becomes.

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

Here, if the book manuscript 92 has a size other than the standard book size described above, the book size selection key 607 allows
Select "Irregular shape (■ input)" and use the numeric keypad 602 to enter the vertical size and horizontal size (in country units) of the set book manuscript 92, and then press the enter key 601.
Press to confirm the book size.

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

The book binding mask area setting key 608 sets the non-reading area (mask area) from the center of the central reference positioning unit 24 to the "left (
-)J rRight (+)" is pressed.

That is, when forming a mask area in the book binding part of the book original 92, first, use the book binding part mask area setting key 608 to set which page on the left or right side of the book original 92 the mask area is to be formed, and then. After inputting the length (in meters) of the set "left mask area (-) J" or "right mask area (+)" using the numeric keypad 602, use the enter key 601 to confirm this input value. .

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

The value of the mask area at the time of initial setting of the book binding mask area setting key 608 is "±10 m".

The reading area selection key 609 selects the reading area of the book original 92 from among "one page (left)", "one page (right)", and "both pages" in the book original reading mode. is pressed when doing so.

Every time this reading area selection key 609 is pressed once,
The display of the reading area display LED 636 is r page (left)
” ・You can switch between “one page (right)” and “both pages.”
The selected reading area is displayed and recognized.

At the time of initial setting of the reading area selection key 609, the reading area display LED 636 displays "r both pages".

Here, when "single page (left)" is selected, only the left page of the book manuscript 92 is read and scanned, and the right page is not read and scanned.

In addition, if "R piece page (right)" is selected here,
Only the right page of the book manuscript 92 is read and scanned, and the left page is not read and scanned.

The two-page spread quick copy key 610 is used to select the "two-page spread continuous reading mode" of the book document reading mode and its "two-page spread continuous reading mode".
Pressed to instruct to print out the scanned document information at the same magnification when in "duplex mode".

The two-page spread continuous copying reduction key 611 is used to instruct to print out the scanned document information at a reduced magnification in the book document reading mode of "two-page spread continuous reading mode" and its "double-sided mode". Pressed down.

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

In addition, the standard reduction magnification at the time of initial setting of this two-page spread continuous shooting reduction key 611 is "Original size x 0.71 (A
3-+A4/B4-+BS)J You can also select which side to print with the back side printed in ``Double-sided spread mode''.
- Pressed to select from three duplex modes: ``Original duplex mode'' and ``Sequential duplex mode.''

Each time this duplex mode selection key 612 is pressed once, the display on the single duplex mode display LED 634 changes to ``spread duplex mode'', ``original duplex mode'', or ``sequential duplex mode''.
The selected reading area is displayed and recognized.

At the time of initial setting of this double-sided mode selection key 612.

The display on the duplex mode display LED 634 is "original duplex mode."

Here, if "Two-sided spread mode" is selected,
Of the left and right pages of the spread-open book manuscript 92, double-sided printing is performed with the left page facing up and the right page facing down.

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

In addition, if the "original duplex mode" is selected here, the right page of both the left and right pages of the spread book manuscript 92 is turned face up, and the left page of the next page turned over by the page turning operation is Double-sided printing is performed with the image facing down.

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

At this time, by pressing the reading start page selection key 603,
When the reading start page of the book manuscript 92 is set to "right", the first print is a single-sided print, as in the case of the "two-sided spread mode".

Furthermore, if the "sequential opening mode" is selected here, the page set with the reading start page selection key 603 out of both the left and right pages of the spread book document 92 is displayed, and the page turning operation is performed. The next page turned over is turned over, and duplex printing is then performed in the order in which it was read.

The two-page spread continuous shooting high-speed print setting key 613 slows down the operation of the page-turning reading unit 1 near the binding part of the book document 92 when in the "single-sided mode" of the "two-page spread continuous reading mode" of the book document reading mode. Alternatively, it is pressed when instructing continuous printing of both the left and right pages of the book manuscript 92 by continuously executing reading and scanning without stopping.

The print magnification key 614 is a key for setting the magnification ratio when magnifying and printing a read image.

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

Here, to change the magnification ratio, move the cursor to the desired magnification ratio using the cursor movement key 617, then press the enter key 601.
It is confirmed by pressing .

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

When this 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 the desired image processing mode using 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 the MFDS.

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

Here, to set the operation mode of the MFDS, move the cursor to the desired MFDS operation mode, then press the enter key 6.
It is confirmed by pressing 1.

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

That is, among each page of the book manuscript 92.

If there is a page that you want to skip without scanning the original, first press this reading skip page setting key 618, and then set the page (skip page) of book g@92 that you want to skip to that reading. After inputting the page number from the start page using the numeric keypad 602, the enter key 601 is pressed to confirm this skip page.

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

Standard book size selection key 619 is a key for selecting the book size of book manuscript 92.

As mentioned above, the booksize key manual mode includes:
There are ``Standard'' and ``Irregular (Wl input)'', and only when the book size is A5, B5, A4, by selecting ``Standard'', you can use the Standard book size selection key 8.
19 allows the book size to be input.

Each time this standard book size selection key 619 is pressed, the standard book size display LED 633 changes to “A”.
5", "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,
Standard book size display LED633 display is rA4J
It becomes.

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

The open key 620 is pressed to open the transport section 19 of the MFDS.

In the sheet original reading mode, 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 face up when in the ``single-sided original reading mode'' of the ``sheet original through mode''.
This key is used to select either "downward".

Each time the sheet original set selection key 625 is pressed once, the display of the sheet original set display LED 635 is switched in the order of "upward" and "downward", and the selected sheet original set side is displayed and recognized.

At the time of initial setting of this sheet original set selection key 625,
The display of the sheet document set display LED 635 is "face up".

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

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

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

FIG. 18 shows a plan view of the writing section of this printer 300, in which a semiconductor laser is used as the laser light source.

In FIG. 18, a laser beam emitted by a semiconductor laser 171 is converted into a parallel beam by a collimating lens 172, and shaped by an aperture 173 into a beam having a fixed shape.

This shaped beam is transmitted through the first cylinder lens 174.
As a result, the light enters the polygon mirror 175 in a compressed form in the sub-scanning direction.

This polygon mirror 175 has a precise polygonal shape, and is rotated in a constant direction at a constant speed by a polygon motor 176.

The rotational speed of this polygon mirror 175 is determined by the speed of the photosensitive drum 170, the writing density, and the number of surfaces.

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

This deflected laser beam is transmitted to each fθ lens 177a, 1
77b and 177c.

These fθ lenses 177a, 177b.

177C transmits scanning light with a constant angular velocity to the photoreceptor drum 17.
0, a function to form an image of this scanning light so that it becomes the minimum light spot on the photoreceptor drum 170, and a function to correct the surface tilt.

The light that has passed through each fθ lens 177a, 177b, and 177c is guided outside the image area by a synchronization detection mirror 178 to a synchronization detection sensor 179, and after a synchronization signal that generates a cue signal in the main scanning direction is applied. After a certain period of time, one line of image data is output, and this process 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 a photoreceptor sensitive to the wavelength of 780 nm of the semiconductor laser 171, an organic photoreceptor (○PC),
A-8i, 5e-Te, etc. are known, but in this example, an organic photoreceptor is used.

Additionally, in the case of laser writing, there is generally an N/P process in which light is applied to the image area, and a P/P process in which light is applied to the background area. The N/P process is adopted.

In FIG. 17, the surface of the photoreceptor drum 170 is charged by a scorotron type charger 180 having a grid on the photoreceptor drum 170.

Uniformly negatively charged.

Next, when the negatively charged image area of the photoreceptor drum 170 is irradiated with laser light and the image area potential is lowered, the surface area potential of the photoreceptor drum 170 becomes -.
An electrostatic latent image of 750 to -800V and an image portion potential of about 150V is formed.

This electrostatic latent image is applied to the developing roller of the developing device 181 by -50
A bias voltage of 0 to -600 V is applied to visualize the image using negatively charged toner.

The image developed by the developing device 181 is transferred to a transfer charger 182 which charges the transfer paper with a positive potential from the back side of the transfer paper, which is fed in synchronization with the rotation of the photoreceptor drum 170. It is transcribed by the transcriptional action of .

The transfer paper on which this image has been transferred is transferred to the transfer charger 182.
The photoreceptor drum 17o is separated from the surface of the photoreceptor drum 17o by being subjected to alternating current neutralization by a separation charger 183 held integrally with the photoreceptor drum 17o.

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

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

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

The photosensor 187 is composed of a light-receiving element and a light-emitting element, and measures the reflection density on the surface of the photoreceptor drum 170, and measures the reflection density (toner density after development) to a preset reference value or less. When this occurs, a toner replenishment signal for replenishing new toner into the developing device 181 is output.

That is, for example, this photosensor 187 writes a certain pattern (pure black or halftone dot pattern) with its optical writing section at a position corresponding to the reading position of this photosensor 187, and develops this pattern. The density of the developed image is determined based on the ratio of the light reflectance of the area and the light reflectance of the photoreceptor drum 170 outside of this pattern area, and when the density of this image is lower than the reference value, a toner replenishment signal is issued. is configured to output.

Here, if there is a shortage of new replenishment toner, the photo sensor 187 is used to detect the lack of remaining toner by taking advantage of the fact that the developing density does not increase even if a toner replenishment signal is output. It may be configured so that it also serves as a sensor.

On the other hand, the printer 300 of this embodiment has a plurality of cassettes 1.
88a and 188b, and.

The transfer paper on which the image has been transferred can be fed on both sides through a paper refeeding loop 189.

That is, in FIG. 17, when the start button of the printer 300 is pressed after a predetermined cassette is selected, each paper feed roller 190a of each cassette 188a, 188b is pressed.
, 190b is rotated, and the transfer paper in the cassette is transferred to the registration roller 191.
The material is fed until it hits the nip.

The registration roller 191 starts rotating at the timing when the position of the image formed on the photoreceptor drum 170 and the position of the transfer paper are synchronized.
Feed the transfer paper toward the surface of the paper.

By kneading, the image is transferred to this transfer paper as described above, and after it is separated from the surface of the photoreceptor drum 170, it is suction-conveyed to the separation conveyance section 192, where it is transferred to the heat roller 193 and the pressure roller. A fixing roller 194 fixes the toner transferred onto the paper surface.

During normal printing, the transfer paper on which the toner has been fixed is placed in the position shown in FIG. It is discharged to the top.

Here, when the print mode of the printer 300 is "duplex mode", the switching claw 195 is switched to the position shown in FIG. The transfer paper is conveyed.

This transfer paper passes through the reversing guide claw 196, and then
After being guided onto the inversion guide tray 197.

By switching the reversing guide claw 196 and reversely rotating (reversing) the reversing guide roller 198, the registration roller 19 passes through the refeeding loop 189 again.
It is fed until it comes into contact with nip No. 1.

In this way, the re-fed transfer paper is transferred and fixed with the toner image formed on the photoreceptor drum 170 in the same manner as in the above-mentioned normal printing.
The paper is discharged onto the paper discharge tray 169 via the switching claw 195, which is switched to the initial state indicated by >.

If the "back side ejection mode" is set, in which the image fixing side of the transfer paper faces the stacking surface of the paper ejection tray 169 when ejecting the transfer paper in the two-sided print mode, the transfer paper is ejected. , the switching claw 195 is switched to the position shown in FIG.
The transfer paper is not directly ejected, but is then transported toward the double-sided transport path.

Immediately after the rear end of the transfer paper passes the switching claw 195, the switching claw 195 is switched to the position shown in FIG. 19(C), and the direction of rotation of the switchback roller 199 is reversed. , the transfer paper guided to this double-sided conveyance path is conveyed in a switchback manner, and then transferred to the printer 30.
The paper is discharged onto the paper discharge tray 169 through the paper discharge port 0.

In this "back side ejection mode", the transfer paper printed on one side is ejected onto the ejection tray 169 with the image-fixed side facing the stacking surface of the ejection tray 169, so the original is read in the same order as the original pages. Then, the transfer paper is discharged with the print pages in the same order.

By the way, as described with reference to FIG. 4, the page turning reading unit 1 has a turning roller 2 between the first turning unit side plate 40 and the second turning unit side plate 41.
, 10th-La 4, 20th-La 5. presser roller 6, and
The first bias rollers 3 are arranged rotatably.

These turning roller 2, 10th roller 4, 20th roller 5, presser roller 6, and first bias roller 3,
As shown in FIG. 20, the reversible conveyor belt 8 is passed over.

A first high voltage source 320 is connected to the first bias roller 3, and is configured so that AC voltages of various frequencies for attraction and static elimination are applied from two ports, respectively.

Further, a turning guide 10 is further provided between the turning roller 2 and the first reading sensor unit 9 inside the page turning reading unit 1.
A page storage section 7 is disposed above each page along the inner circumferential surface of the turning conveyor belt 8.

A page turning resensor 29 made of a photo sensor or the like is disposed in the page storage section 7 to detect errors during page turning.

This page turning resensor 29 may be arranged on the turning guide 10.

Also, between the turning roller 2 and the presser roller 6, a first
As described with reference to FIG. 1, the first reading sensor unit 9 is arranged.

This first reading sensor unit 9 is attached to the page turning reading unit 1 so that it can move up and down by about 3 m+, and when reading a document, it is pushed downward by a reading sensor spring 147 to read the book document 92 or It is configured to be brought into close contact with the document surface of the sheet document 200.

Further, as shown in FIG. 21, this first reading sensor unit 9 includes an LED 316 as an illumination system for the original, an RMLA 81 (roof mirror lens array) as an imaging system for the original image, and an image-forming original. The sensor 315 is equipped with a Si equal-magnification sensor 315 as a photoelectric conversion system that converts an optical image into an electrical signal.

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

In FIG. 21, first, the light emitted from the LED 316 is focused onto the document surface by the bar lens 83.
The original is illuminated.

Next, the reflected light from the document surface is transmitted to an optical path separation mirror 84.
reflected by LaB5 (lens array) and R
The light passes through the MA86 (roof mirror array) and is reflected again by the optical path separation mirror 84.

The image light of the original 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 this is converted into an electrical signal by the Si equal-magnification sensor 315. converted and read.

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

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

If the manuscript is a book manuscript 92, the operation display board 31
Press the open key 620 of No. 3 to open the transport section 19 upward as shown in FIG. With the reading start page 92 opened upward, the conveying section 19 is closed as shown in FIG.

In this state, after setting the reading conditions for this book JJK draft 92 by operating each key on the operation display board 313, the start key 600 is pressed to start the MFDS.

As a result, as shown in the first page, the turning unit drive belt 52 is driven by the turning unit drive motor 60, and the page turning reading unit 1 is moved rightward from the leftmost home position 1-A. start,
As the page turning reading unit 1 moves, the first reading sensor unit 9 reads the document information of the book M manuscript 92.

At this time, the rotation of the turning conveyor belt 8 is stopped, and the document surface of the book document 92, which is spread open, is pressed down from above.

Further, as described above, the page turning reading unit 1 is rotated about its rotation support rod 42 as a fulcrum, and the sliding pipe 43 integrated therewith is moved up and down along the sliding support rod 46. Book manuscript 9 by being
Along the manuscript surface of 2.

The document is moved while bringing the first reading sensor unit 9 into close contact with the document surface.

Furthermore, this page turning reading unit 1.

When the book manuscript 92 reaches the midway position 1-H of the book manuscript reading, the 20th
An AC voltage for adsorption is applied from the first high-voltage voltage 320 shown in the figure, and a striped charge pattern is formed on the turning conveyor belt 8.

In this way, the page turning reading unit 1 moves to the right end position 1-C in FIG. 1 while forming a striped charge pattern on the turning conveyor belt 8, and the first reading sensor unit 9 The document information of the book document 92 is read.

When the reading of the document information of the book document 92 is completed as described above, the page turning reading unit 1
As shown in FIG. 2, the end position 1-C is returned toward the home position 1-A.

At this time, as shown in FIG.
Above, an unequal electric field is generated due to the charge pattern formed during the reading operation, and this electrostatic field causes the right page of the book document 92 to be electrostatically attracted to the turning conveyor belt 8. It has become so.

Therefore, in this state, the page turning reading unit 1
When the page turning reading unit 1 is moved toward the end position 1-C and reaches the turning start position 1-D shown in FIG. 22, the turning conveyor belt 8 is moved as shown in FIG. Along with Book Manuscript 92
The edge of one right page of the document is caught in the page turning reading unit 1.

As described above, as the page-turning reading unit 1 moves, the document rolled up in the page-turning reading unit 1 has a curvature separation caused by the curvature of the turning roller 2 and the stiffness of the document, so that the leading edge of the document is , and is gradually separated from the turning conveyor belt 8.

In this way, the document gradually separated from the turning conveyor belt 8 is moved along the turning guide 10 shown in FIG. Guided within.

As shown in FIG. 20, this page storage section 7 is formed into a cylindrical shape, and by winding up the document caught inside the page turning reading unit 1 along its inner peripheral surface, the page storage section 7 can be One page of a scanned document can be stored in a small space.

Therefore, according to this page turning reading unit 1, as shown in FIG.
However, from the turning start position 1-D to the winding completion position 1
By moving back towards -H, it is possible to very smoothly separate one page of the original that has been read from the next page of the original that will be read in the next reading operation. .

The document stored in the page storage section 7 in this way is moved to the page turning reading unit 1 at its winding completion position 1.
-E, go beyond the center of the book manuscript 92 toward the page ejection position 1-F of the left page pane of the book manuscript 92,
Further, by the return movement, the page turning reading unit 1 and the document stored therein begin to be ejected from the page storage section 7 of the page turning reading unit 1 due to relative movement.

Then, this page turning reading unit 1 is moved back to its home position 1-A, and when the movement is completed, this page turning reading unit l
The ejection of the original stored in the page storage section 7 is completed, and the operation of turning over one page of the original that has been read is completed.

On the other hand, during this document turning operation, the first bias roller 3 The program is such that the electric charge pattern formed on the turning conveyor belt 8 is neutralized by applying an AC voltage for static elimination from the first high-voltage power supply 320 shown in FIG.

Therefore, when the page-turning reading unit 1 returns to its original position, the page is placed between the document that has been read and the page-turning conveyor belt 8.

Since no electrostatic adsorption force is generated, the document winding and ejecting operations can be performed extremely smoothly.

Incidentally, conventionally known devices for holding and conveying sheet members and the like include devices using an air suction method, an electrostatic adsorption method using comb-teeth electrodes and an electric double layer method, and the like.

Further, as a page turning device for book manuscripts, a device using an air suction method or the like has been proposed.

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

That is, the air suction method requires an air pump that suctions air to generate negative pressure and an air suction path, which has the drawback of increasing the size of the device.

In addition, in the comb-teeth electrode embedding method, two comb-teeth electrodes are embedded in a dielectric material so that their teeth mesh with each other, and a positive electrode and a comb-teeth electrode are embedded in each electrode.

The method of applying a negative voltage not only increases the cost but also makes it difficult to form the document turning conveyance belt into an endless belt.

Furthermore, in the electric double layer method, the belt and sheet are charged with charges of opposite polarity through corona discharge, etc., so when turning the pages of a book manuscript, etc., it is necessary to separate the pages to be turned in advance, otherwise the charges will be charged. I can't.

Furthermore, with other page turning methods that use frictional force, such as those using rubber rollers, the page turning accuracy is severely restricted depending on the paper quality and size of the book manuscript, making it difficult to improve its reliability. .

In contrast, in this embodiment, as shown in FIGS. 20, 23, and 24, an AC voltage for adsorption is applied from a high-voltage power source 320 to the flip-up conveyor belt 8, which is an endless belt. By forming an alternating stripe-shaped charge pattern on the surface of the turning conveyor belt 8,
An unequal electric field is generated on the turning conveyance belt 8 to hold and convey the document and to turn the pages.

Therefore, according to this page turning method, it is possible to hold and convey the document and to turn the pages extremely smoothly.

The basic configuration and electrostatic adsorption principle of this page turning method will be explained below.

Turning conveyor belt 8 used in this page turning method
On the back side of the dielectric material formed in the shape of an endless belt,
A two-layer belt with conductive treatment was used.

Further, as a means for applying an alternating voltage to the flipping conveyor belt 8, a first high voltage is applied to the first bias roller 3, which is rotatably supported with its curved surface in contact with the surface of the flipping conveyor belt 8. A power supply 320 applied an AC voltage for adsorption.

As shown in FIGS. 20 and 23, while applying an alternating electric field to the first bias roller 3 using the conductive layer 8b of the flip conveyor belt 8 as a grounding surface, the flip conveyor belt 8 and the first bias roller 3, on the surface of the dielectric 8a of the flipping conveyor belt 8,
A striped charge pattern is formed.

As a result, an unequal electric field is generated near the surface of the dielectric material 8a of the turning conveyor belt 8.

When a dielectric material such as a sheet of paper to be read is brought close to this unequal electric field, polarization occurs inside it, and because of this unequal electric field, an attractive force is applied to the sheet of paper toward the conveyor belt 8. work.

This becomes clear by performing area integration of a stress of m a x w e 11 over the surface of this paper.

Here, the stress of m a x w e l 1 is.

f = EdivD --grad(E-D) + (
D-grad) E= ・(a) Formula % Formula % Also, if the normal direction of the surface of the flipping conveyor belt 8 is the X axis, the stress of max w e l l in the X axis direction is expressed as The result is as shown in equation (b).

Next, the object force ( Adsorption force) N is calculated.

In other words, the object force (adsorption force) N of this paper is N=fs
fxds.

As a result, when the coefficient of friction of this paper is μ, the conveyance force F of this paper is expressed by the following formula: F=μN.

The specific configuration of this embodiment is as follows:
As, 75 μm thick PET film (dielectric material 8a)
An endless belt on which a 10 μm thick aluminum film (conductive layer sb) was formed was used, and the pitch of the charge pattern formed on the belt was 2.4I.

That is, the reading speed of the book manuscript 92 is set to 120 m.
/s, AC frequency 50 Hz, applied voltage ±2k
It was set as Vp-p.

In addition, Fig. 25 shows the experimental values of the pitch characteristics of the conveying force when the applied voltage is constant at ±2 kV p-p, and Fig. 26 shows the experimental values of the pitch characteristics of the conveying force when the applied voltage is constant at ±2 kV p-p. Figure 27 shows the experimental values of the applied voltage characteristics of the conveying force when the pitch of the charge pattern is fixed at 2.4+m+, and Figure 28 shows the experimental values of the applied voltage characteristic of the charge pattern when the pitch of the charge pattern is fixed at 2.4am+. The experimental values of the applied voltage characteristics of the adsorption force are shown when it is kept constant.

As is clear from these experimental values, the pitch of the charge pattern and the applied voltage used in this example are not limited to the above-mentioned values; for example, the pitch of the charge pattern may be set to 0. The range may be from 5 m to 10 m11, and the applied voltage may be ±1 kVp-p or more.

In addition, in this example, as a high frequency AC voltage for static elimination,
Although a frequency of 2 kHz and an applied voltage of ±2 kVp-p are used, any value may be used for each of these values as long as the static elimination effect can be obtained.

As described above, according to the page turning method of this embodiment, there is no need to perform any modification on the paper (book manuscript 92) to be attracted to the turning conveyor belt 8, so that the sheets are not attracted to each other by static electricity. Book manuscript 92 due to the occurrence of irregularities (irregularities) at the edges of the paper.
It is possible to eliminate the occurrence of page turning errors.

Further, according to this page turning method, since the place where the adsorption force is generated is near the surface of the turning conveyor belt 8, the paper that is in contact with the surface of the turning conveyor belt 8, that is, the book Sufficiently large conveying force and adsorption force act on the topmost document of the document 92 where page turning is performed, but the second and subsequent documents located below this document are These conveying forces and adsorption forces rarely act on the material.

Therefore, according to this page turning method, it is possible to reliably turn only one page, so this method is the most suitable method for turning the pages of the book manuscript 92.

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

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

First, the MFDS control means will be explained based on FIG. 29.

In FIG. 29, a main control board 310 controls commands and data between each board, and controls 0N of each load.
10FF timing and abnormality processing due to each sensor input,
It also performs mode switching and controls the entire MFDS.

Further, the main control board 310 is configured to set one communication protocol by communicating with connected devices and to be able to handle each connected device individually.

For example, if the printer 300 is connected as the output device, its pixel density, processing speed, availability of double-sided printing, availability of backside paper ejection, etc. can be checked to determine the corresponding mode selection area. It is composed of

Furthermore, this main control board 310 is provided with two systems of interfaces to external devices, corresponding to each mode.

In the main control board 310 of this embodiment, commands between each board are carried out by serial communication, separated from the data and control lines, and commands can be sent and received even while the data is being output.

Here, if you want to increase its versatility, use GP IB, Centronics, 5CS as the interface.
By setting one or both of I, etc., the display, optical disk device, HD
Data can be stored in storage devices such as D and FDD without using a special interface.

On the other hand, in FIG. 29, a flip conveyor belt drive control board 311 controls a flip conveyor belt drive motor 61.

Further, the turning unit drive control board 312 controls the turning unit drive motor 60.

Here, the turning conveyor belt drive motor 61 detects the speed of the turning conveyor belt 8 by feedback of encoder pulses generated by an encoder integrally attached to the turning conveyor belt drive motor 61, and controls the speed position and corrects the turning conveyor belt 8. Performing reverse operation.

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

In addition, these turning conveyor belt drive control boards 311
, and the turning unit drive control board 312 are each connected to the main control board 310, and each sends and receives commands to and from the main control board 310 by serial communication.

The operation display board 313 displays keys for setting the number of print positions, variable magnification, number of pages to be turned, each mode, etc., displays for these keys, error displays, turning status displays, and displays for each mode. Displays information such as how to set the original.

Here, in the mode display, the connected device (printer 3
00), or if an impossible mode is selected, an error message is displayed.

For example, even though a printer that cannot print on both sides is connected, if the duplex mode selection key 612 is pressed manually, the message 'The connected printer cannot print on both sides' appears.
An error message such as this will be displayed.

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

Furthermore, the operation display board 313 and the main control board 310 transmit and receive commands or data through serial communication.

The first image processing board 314 has a function of generating a drive clock for the Si equal-magnification sensor 315 (hereinafter referred to as the first CCD 315) built in the first reading sensor unit 9, and It has a built-in function to take the 0N10FF timing of the first LED 316 and amplifies the output of the first CCD 315.
It has a function of A/D converting this output and performing image processing.

The first image processing board 314 also performs image processing such as shading correction, MTF correction, main scanning magnification, character processing, photographic processing, and negative/positive inversion.

This first image processing board 314 is the main control board 3
10, and sends and receives data and commands to and from this main control board 310.

The second image processing board 317 is similar to the first image processing board 314 described above, and the second image processing board 317 includes the second reading sensor unit 14 (
The function of generating a drive clock for the second CCD 318 built in the second reading sensor unit 14 (configured similarly to the first reading sensor unit 9), and the second LED 319 (7) ON1 also built in the second reading sensor unit 14
It has a function of determining the 0FF timing, and a function of amplifying the output of the second CCD 318 and performing image processing by A/D converting this output.

Further, this second image processing board 317 also performs shading correction, MT
Image processing such as F correction, main scanning magnification, character processing, photographic processing, and negative/positive reversal is performed.

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

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 able to generate two frequencies, one for document suction and one for belt neutralization. The switching of each frequency is performed by switching signals from two output ports of the main control board 310.

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

Paper feed clutch 128 controls the timing to start feeding sheet original 200 based on a control signal from main control board 310 .

Also, various sensors 25, 26, 27° 28, 29.3 connected to each input port of the main control board 310
0.31, 32, 33, and 34 perform mode switching, timing detection, abnormality detection, etc., as described in the mechanism explanation above, and provide the respective detection signals to the main control board 310. .

? i4: The operation mode of MFDS will be explained.

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

The first operation mode of this MFDS is a book document reading mode that performs an automatic page turning reading operation of a book document as shown in FIG. 30, and the second operation mode is a book document reading mode as shown in FIG. This is a sheet original reading mode in which sheet originals are automatically fed and read.

These book document reading mode and sheet document reading mode each have further subdivided modes.

That is, as shown in FIG. 30, the book manuscript reading mode includes an automatic book size recognition mode in which the book size of the book manuscript 92 is automatically recognized, and a book size recognition mode in which the book size is manually specified using keys on the operation display board 313. There is a size key manual mode.

In both of these automatic book size recognition mode and book size key manual mode, automatic page turning reading operation for the book document 92 is performed using a spread reading mode in which the book document 92 is set with the document side facing upward. will be held.

Furthermore, this book manuscript reading mode can be used with any output device as its reading method! (particularly related to a printer), two consecutive pages of a double-page spread are used to continuously read the original images of the two left and right pages of the spread book manuscript 92 and print the images of these two pages on one sheet of transfer paper. Using a printer with a reading mode and a double-sided image forming function, a spread book manuscript is printed on the back side of a sheet of transfer paper on which two pages of original images are printed on the left and right pages using the two-page spread continuous reading mode described above. This two-page spread 2 continuously forms read images for the next two left and right pages of 92.
Two-sided mode of continuous page reading mode, one page per page reading mode in which the document images of the left and right pages of the spread book document 92 are read page by page, and one page per page per spread mode. This double-page spread 1 is formed by dividing the document images of the next left and right pages of the book document 92 into two-page spreads on the back side of the transfer paper printed in the edge reading mode by the printer having the double-sided image forming function. It has a double-sided mode and a page-limit reading mode.

On the other hand, in the sheet document reading mode, as shown in FIG. 31, the sheet document 200 is automatically fed and ejected while the position of the first reading sensor unit 9 or the second reading sensor unit 14 is fixed. The first reading sensor unit of the page-turning reading unit 1 is set in the sheet original through mode in which the original image is read in one sheet through mode while moving the original, and the first reading sensor unit of the page turning reading unit 1 when the sheet original 200 is set (fixed) on the original placing surface 116. 9 is repeatedly moved back and forth (scanning) to read the sheet document 200, and in the sheet document scan mode, when the document cannot be set (or not set) using the automatic document feed function (ADF), manually There is a manual opening/closing mode for sheet documents to be set.

Also, in the sheet original through mode, the sheet original 200
There is a single-sided reading mode in which images on only one side of the sheet document 200 are read, and a double-sided reading remote in which images on both sides of the sheet document 200 are read simultaneously using the first reading sensor unit 9 and the second reading sensor unit 14.

Furthermore, in this double-sided reading mode, the first reading sensor unit 9 and the second reading sensor unit 14 are
There is a same-position reading mode in which the 1M document image is read by placing them at the same position facing each other, and a same-position reading mode in which the first reading sensor unit 9 and the second reading sensor unit 14 are placed at different positions shifted from each other to read the original image. It also has a separate position reading mode for reading.

Above, we have explained the operation modes of MFDS, but
Next, switching between the above-mentioned individual modes will be explained with reference to FIG. 32.

In FIG. 32, when the main power of the MFDS is turned on, the main control board 310 shown in FIG. ．． The second image processing boards 317 are each reset and initialized.

After that, the connection of the connected device such as the printer 300 is checked, and the mode compatible with this connected device is displayed.
It accepts the input of each key to set the number of prints, variable magnification, number of pages to be turned, and each mode.

Also, during this time, the book manuscript 92 or the sheet manuscript 20
A set of 0 is performed.

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

Also, here, the open key 6 of the operation display board 313
20 opens the transport section 19 of the MFDS, and when the book document 92 is set in the center reference positioning section 24 of the document placement surface 116 in a spread-out state, the book document sensor 27 is turned on. be done.

These sheet document sensor 25 and book document sensor 27
The document image reading mode is switched as shown in FIG. 32 in accordance with the 0N10FF state and the print position number indicating the number of prints of the sheet document 200 inputted using the numeric keypad 602 of the operation display board 313.

That is, here, the book document sensor 27 is OFF, the sheet document sensor 25 is ON, and.

When the number of print positions is "1", a transition is made to the sheet document through mode.

Also, here, the book document sensor 27 is OFF, the sheet document sensor 25 is ON, and the number of print positions is "2".
In the above case, a transition is made to the sheet document scan mode.

Further, when both the book document sensor 27 and the sheet document sensor 25 are OFF, the mode shifts to the sheet document manual opening/closing mode.

Further, when the book original sensor 27 is ON and the sheet original sensor 25 is OFF, the mode changes to the book original reading mode.

Furthermore, here, the book document sensor 27. If the sheet document sensor 25 is ON for both WJ and WJ, abnormality processing 1 (warning buzzer ON and error display) is performed to alert the user, and then the mode transitions to the book document reading mode.

After entering each selected mode subroutine in this way, the start key 6 on the operation display board 313 is pressed.
If 00 is not pressed, the process returns to the step of accepting manual key input without executing the image reading operation.

Next, the operation of each mode mentioned above will be explained.

First, the book document reading mode will be described with reference to FIG. 33.

When the MFDS mode enters the book document reading mode, the scan cutoff sensor 34 turns ON10 F F
A check is performed.

As shown in FIG. 4, this scan cutoff sensor 34 is connected to a page turning reading unit l.

When the upper limit position is reached, the upper limit detection section 76
is detected and turned on.

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 fifth document placement surface 116.

As the page turning reading unit 1 rises, that is, the thickness of the book document 92 increases.

The tension of the turning conveyor belt 8 that drives this increases.

Therefore, if the tension of this turning conveyor belt 8 becomes too high, that is, if the book document 92 is too thick and the page turning reading unit 1 rises too much, this tension acts as a brake, causing the page turning reading unit 1 to scan. become unable to do so.

The scan cutoff sensor 34 detects the level at which the book document 92 is so thick that the page turning reading unit l cannot scan it.

When this scan cutoff sensor 34 is ON,
Perform error processing 2 (turn on the warning buzzer and display the ``book document is too thick'' sign).

When the user forcibly closes the transport section 19, the transport section 19
to prevent it from being damaged.

Here, if the thickness of the book document 92 is less than the adaptation level, the user closes the transport section 19, thereby turning on the transport section lock sensor 31.

At this time, if the transport section 19 remains open, that is, the transport section lock sensor 31 remains OFF, the abnormality processing 3
(The warning buzzer turns on and the message 'Please close the transport section' is displayed).

When the conveying section 19 is closed, the book size upper limit sensor 33 is checked to be ON/FF.

Here, the book size upper limit sensor 33 detects the book original 9
If the book size of 2 is detected and turned on, that is, the book size of the book original 92 set on the 1M document placement surface 116 exceeds the reading area of the page turning reading unit 1 and is an unreadable book. In the case of the size, abnormality processing 4 (turning on the warning buzzer and displaying the message ``Book document size is too large'') is performed.

After that, after checking the number of print positions, variable magnification, and number of pages to be turned, the prescan flag is set if the automatic book size recognition mode is selected.
If the mode is not the automatic book size recognition mode, the mode is set to the book size input mode, and the reading area of the book document 92 is determined by manually operating a predetermined key on the operation display board 313 to set the book size.

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

This prevents the user from accidentally opening the conveying section 19 and damaging the book original 92 during the page turning operation by the page turning reading unit 1.

Next, after the transport section locking device 140 is activated, if the aforementioned prescan flag is set, the prescanning operation of the page turning reading unit 1 is executed.

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

After this prescan operation, the connected device (printer 300
) until it is ready.

Then, when this connected device (printer 300) is ready, when it receives a reading start signal output from the connected device (printer 300), the page turning reading unit 1 is driven to read the book as described above. The operation of reading the original image of the original 92 is started.

The reading operation by the page turning reading unit 1 is performed the number of times according to the number of print positions set previously.
It is done repeatedly.

When the predetermined number of reading operations are completed, the page turning operation is performed by the page turning reading unit 1, as described above, in order to read the next page of the original image.

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

Then, when the page turning operation of the preset last page to be turned is completed and the reading operation for the last read page is completed a predetermined number of times, the page turning reading unit 1 does not perform the page turning operation for the last page to be read. is returned to its home position 1-A, and this book document reading mote routine is returned.

The basic operation of the book document reading mode is as described in the 33rd section above.
As shown in the flowchart shown in the figure, the above-mentioned 2-page spread continuous reading mode, its duplex mode, the 1-page spread separated reading mode, and its duplex mode are as follows.

When the key is manually set as shown in FIG. 32, the receiver becomes the input mode.

For each of these input modes, press the start key 6oO
This will be explained with reference to a timing chart showing the progress after is pressed.

First, using the timing chart shown in Figure 34,
The two-page spread continuous reading mode will be explained.

In FIG. 34, when the start key 600 of the operation display board 313 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 is a white reference plate, and thereby shading correction of the first reading sensor unit 9 is performed.

This shading correction is performed every time the page turning reading unit 1 starts up, and is completed before the moving speed of the page turning reading unit 1 reaches a constant speed (the timing chart for this part is not shown).

The page turning reading unit 1 is started by a normal rotation start signal sent from the main control board 310 to the turning unit drive control board 312.

In response to this normal rotation start signal, the page turning reading unit 1 starts pre-scanning.

Here, after the moving speed of the page turning reading unit l rises to the constant speed Vf, the aforementioned shutter has already been opened, and the first CCD 315 detects the book original 92.
Reading of the original image has started.

By reading the page-turning reading unit 1 during pre-scanning, the edges of the spread book document 92 are compared side-to-side by image processing, and the output of the encoder 152 attached to the turning reroller 2 at this time is counted. The book size of the book original 92 set on the yK document 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.

In this way, this MFDS is configured such that the book original 92 is set with the center of the original placing surface 116 as a reference, so that the set book original 92
By detecting only the left end of the page, it is possible to determine the reading area of the document image of the page turning reading unit 1 and the page turning area.

Therefore, in this MFDS, when detecting the book size of the book original 92, there is no need to pre-scan the entire page with the page-turning reading unit 1, and the page-turning reading unit 1 can be placed on the 1M document placement surface 116 by simply performing a short pre-scan. The book size of the placed book original 92 can be detected.

As a result, during pre-scanning by the page-turning reading unit 1, the reading start page of the book document 92 will not be erroneously turned over.

The book size data of this book manuscript 92 is transmitted from the main control board 310 to the printer 3 as an externally connected device.
00.

On the other hand, while this book size detection is completed and the book size data is being sent to the printer 300, the main control board 310 instructs the turning unit drive control board 312 to rotate the turning unit drive motor 60 in the reverse direction. A signal is given and the page turning reading unit l moves to its home position position 1 at a speed Vr.
- It is moved back towards A.

Note that by coloring the document placement surface 116 of the document table 18 of this MFDS in a chromatic color, such as yellow, which is not often used for book manuscripts, this document can be placed easily. Placement surface 116 and book manuscript 92
Since it is possible to improve the accuracy of region identification with the reading region of the original image, the book size can be detected more accurately during the above-mentioned pre-scanning, and the reliability of the book size data is improved.

Furthermore, if the document placement surface 116 is colored in a neutral color such as gray, the first CCD 315 of the first reading sensor unit 9 can be used for area identification during pre-scanning without using a color sensor. becomes possible.

After the above pre-scan is completed and the page turning reading unit 1 is evacuated to the home position 1-A, the printer 300 is ready and the printer 300 requests the main control board 31o to transfer data. When the Transfer Gifted signal is given, this causes the transfer from the main control board 310.

A normal rotation signal for rotating the turning unit drive motor 6o in the normal direction is applied to the turning unit drive control board 312, and the normal rotation operation of the page turning and reading unit 1 is started.

As mentioned above, this page turning reading unit 1 has the following features:
By feeding back the output of the encoder 152 of the turning roller 2, the turning roller 2 is moved along the document surface of the book document 92 toward its end position 1-C while being controlled at a constant speed Vf. .

At this time, the LED 31 of the first reading sensor unit 9
6 has already been lit, 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, the book manuscript 92 set spread-open on the manuscript placement surface 116 has a severe warpage near the binding part (part of the center). It becomes difficult to read the manuscript information accurately.

Further, normally, manuscript information such as characters and images is not formed near the binding portion of the book manuscript 92.

Therefore, in this MFDS, as shown in FIG. 34, the first CCD 3
The reading 5FGATE of No. 15 is turned off, and the reading of document information near this binding section is masked.

As described above, the mask area at the time of initial setting of this document information is +
It is set to be 10m+, -1C1a,
The setting value of this mask area can be changed manually using the book binding mask area setting key 608 on the operation display board 313, so that it can also be used for book manuscripts with special bindings. There is.

By the way, the first reading sensor unit 9 reads the document information of the book document 92 until the page turning reading unit 1 reaches its end position 1-C. When reaching near the center of , the first high voltage power supply 320 is turned on at frequency f1.

As a result, the above-described charge pattern is formed on the portion of the turning conveyor belt 8 that comes into contact with the right page of the book original 92.

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

In this way, when the page turning reading unit 1 is driven to its end position 1-C and the reading of the document information up to the reading area at the right end of the book document 92 is completed, the first high voltage electricity g320 is output. is turned off, and a turning signal is applied from the main control board 310 to the turning unit drive control board 312, so that the book document 9 is turned off by the page turning reading unit 1.
The second page turning operation is started.

At this time, if the document surface read by the first reading sensor unit 9 corresponds to the last read page of the book document 92 set in advance, the main control board 310 does not output a turning signal, and this After the page turning reading unit 1 finishes reading the last read page of the book document 92, it is returned to its home position 1-A without performing the above-mentioned page turning operation.

During the page turning operation of the book manuscript 92.

Until the page-turning resensor 29 is turned on, the reverse operation of the page-turning reading unit 1 is started slowly, and the page of the book original 92 electrostatically attracted to the turning conveyor belt 8 (see FIG. right page) is guided into the page storage section 7.

Then, the page turning reading unit 1 is further moved back toward its home position 1-A, and up to the center part of the page of the book document 92 that has been read is turned over into the page storage section 7.

In addition, during the page turning operation of the page turning reading unit 1, the first high voltage power supply 320
is turned on at frequency f2.

In this way, the page of the book manuscript 92 that has been turned into the page storage section 7 of the page-turning reading unit 1 is read after the page-turning reading unit 1 passes a part of the center of the book M manuscript 92. While reaching the end position [1-C], the page is ejected from the page storage section 7, and the page turning operation is completed.

Page turning reading unit 1 when this page is ejected
The return speed V r m is set to be larger than the speed Vf when reading the yK document, that is, V
It is set so that r m > V f, and this page turning operation is made faster.

The state of this series of page turning operations is detected by a page turning resensor 29.

In other words, this MFDS has ○N10 of the page turning resensor 29 at each position of the page turning reading unit 1
The presence or absence of an abnormality is detected by checking the FF, and if there is an abnormality, an abnormality processing operation is executed.

This abnormal processing operation includes a warning buzzer being activated, and 1. For example, if the document page cannot be turned into the page storage section 7, "page turning is not possible" and the document page turned into the page storage section 7 is displayed. If ejecting is not possible, a message such as "page stacking not possible" will be displayed on the operation display board 3.
13, and furthermore, this page turning operation is stopped.

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

Hereinafter, reading of the second and subsequent pages of the book manuscript 92 and page turning operations are sequentially started in response to a transfer request signal from the printer 300, and the same reading operations and page turning operations as described above are performed. This process is repeated until the preset final page to be read is reached.

Here, in the timing chart of FIG.

The case where the number of print positions of the original is set to "1", that is, the case where each read page of the book original 92 is read once, the page turning operation is executed after this reading is completed is shown. If the number of originals to be printed is set to "2" or more, when the first reading sensor unit 9 completes the first reading of the original, the main control board 310 sends a message to the turning unit control board. 312, a reversing signal is sent instead of a turning signal, and the page turning reading unit 1 returns to its home position 1 at a speed Vr.
-A, and at the same time as this return operation is completed, the second original reading operation of the page turning reading unit 1 is started.

Then, the document reading operation of the page turning reading unit 1 is repeatedly performed as many times as the preset number of document prints.

When the number of times of this operation matches the number of prints, a turning signal is transmitted from the main control board 310 to the turning unit operation control board 312 for the first time, and the above-described page turning operation is executed.

Hereinafter, the reading of the second and subsequent pages of the book manuscript 92 and the page turning operation are sequentially started in response to a transfer request signal from the printer 300, and are repeated a number of times according to the number of print positions as described above. The reading operation and page turning operation are repeatedly performed until a preset final read page is reached.

Also, here, by the print magnification key 614.

When the scanned original image is set to be scaled, the scan speed Vf of the first reading sensor unit 9 is varied to a speed corresponding to the scale ratio, so that the sub-image of the original image is In addition to scaling in the scanning direction, the first image processing board 314 also scales the original image in the main scanning direction.

On the other hand, in the double-sided mode of the two-page spread continuous reading mode as described above, the printer 300 performs double-sided printing of the original image.

The difference is that the transmission timing of the transfer request signal from the printer 300 to the main control board 310 is slightly delayed, but other than that, the same operations as in the two-page spread continuous reading mode described above are performed.

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

This two-page spread reading mode is a mode in which the left page and right page of the spread book document 92 are read separately to form images, and each of these images is printed on separate transfer paper. , a mode in which printing is performed on both sides of a single sheet of transfer paper (duplex mode of this one-page spread reading mode).

In this mode, either the operation of reading from the left page of the book manuscript 92 or the operation of reading from the right page is manually selected and set using the reading start page selection key 603 on the operation display board 313. can do.

FIG. 35 shows a timing chart when reading starts from the left page of the book manuscript 92.

The operation of this one-page spread reading mode is approximately the same as the operation of the double-sided mode of the two-page spread continuous reading mode described above. A transfer request signal is sent to the main control board 310 for each page, and this causes the page turning reading unit 1 to move at a constant speed from the left page to the right page of the book document 92. (scanned).

FIG. 36 shows a timing chart when reading is set to start from the right page of the book original 92 in this one-page spread reading mode.

As is clear from this timing chart, when reading starts from the right page of the book manuscript 92,
The moving speed of the page turning reading unit 1 for the left page, which is not read, of the book original 92 is programmed to be faster than the scanning speed Vf of the first reading sensor unit 9 for the right page.

Efforts are being made to shorten the document reading time, that is, to improve the performance of the reading function.

In addition, in this one-page spread reading mode, if a page is set to be skipped without scanning using the reading skip page setting key 618, the page turning reading unit 1 for this reading skip page is the scanning speed V of the first reading sensor unit 9 when reading
The reading skip page is moved at a speed faster than f and is programmed to immediately perform this read skip page turning operation (timing chart not shown).

By the way, in general, as shown in FIGS. 35 and 36, there are few printers in which the printer 300 can continuously request a transfer request signal from the main control board 310 in a normal state.

Therefore, when using such a general printer to perform this single-page spread reading mode, it is possible to achieve this by feeding two sheets of transfer paper in a stacked manner on the printer side. can be done.

In addition, if it is necessary to provide a certain distance between these two sheets of transfer paper due to the registration between the transfer paper and the photosensitive drum, the left page of the book manuscript 92 may be This is achieved by transmitting the image data on the right side of the book manuscript 92 to the printer as is, and delaying the transfer timing of the image data on the right page side of the book manuscript 92 to the printer by a time corresponding to the distance between these transfer sheets through a delay memory. can be done.

A block diagram of an example of the latter case is shown in FIG. 37, and a timing chart thereof is shown in FIG. 38.

In this example, internal gates A and H on the main control board 310 control the image data that is output to the printer through the delay memory for a time Td, with respect to the image data that is output as is to the printer through the switch. Configured to be delayed.

Next, the double-sided mode in this one-page spread reading mode will be explained.

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

In this case, it is necessary to reversely convey the transfer paper on the printer 300 side, so it takes some time after printing the image data of the left page and starting printing the image data of the right page. is multiplied.

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 section, 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 reversal conveyance of this transfer paper are completed, and the printer 300 side
When a transfer request signal is issued from 0 to the main control board 310, the page turning reading unit 1, which had been stopped, is driven again at the predetermined scanning speed Vf, and the book document 9 is
The right page of 2 is read, the image data of this right page is transferred to the printer 300, and this right page image is printed on the back side of the transfer paper with the left page image printed on the front side, resulting in one-sided printing. will be carried out.

A timing chart at this time is shown in FIG.

Next, a double-sided mode will be described in which an image is formed by changing the relationship between the front and back sides of the printed transfer paper and the front and back sides of the document surface of the book document 92 to -i in this one-page spread reading mode.

In this mode, when starting reading from the left page of the book document 92, as described above, the printer 300 is instructed to continuously feed two sheets,
The transfer paper on which the left page image is printed is discharged as is, while the transfer paper on which the right page image is printed is reversed and conveyed, and preparations are made for printing the next page of the left page image of the book manuscript 92 on the back side. Do this in advance.

During this time, on the MFDS side, a page-turning operation is performed for the original page that has been read.

When this page turning operation on the MFDS side is completed,
A reading operation for the next page is executed, and the read left page image is printed on the back side of the transfer sheet on which the right page image was previously printed and conveyed in reverse, and is discharged.

Further, the right page image read at this time is printed on newly fed transfer paper.

This transfer paper, like the previous transfer paper, is reversed and conveyed,
Preparations are made to print the left page image of the next page of Book/Ji@92 on the back side.

By repeatedly performing such a series of operations, a transfer sheet on which a document image having the same page configuration as the book document 92 is printed is obtained.

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

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

In the connected device check in FIG. 29, the printer 300
If the backside paper can be ejected, the following display will be displayed.

Namely.

``If the book manuscript is written horizontally (left-handed), open the first page you want to read and place it facing upwards.
`` ``If the book manuscript is written vertically (right-handed), open the first page you want to read and load it upside down.'' As shown in ``, the instructions for loading the book manuscript horizontally and vertically are provided respectively. be done.

On the other hand, in the connected device check of FIG. 29, if the printer 300 is capable of only surface ejection, the following display is displayed.

In other words, ``If the book manuscript is written horizontally (left-opening), open the last page you want to read and set it upside down.'' ``If the book manuscript is written vertically (right-opening), set the last page you want to read with the last page facing up.'' and set it facing upward.

, the respective setting methods for horizontal writing and vertical writing of the book manuscript are instructed.

In this MFDS, follow the instructions as above.

By setting the book original 92, the pages of the ejected transfer paper can be aligned regardless of the function of the printer 300 connected thereto.

In addition, there are two methods for inputting the number of pages to be turned in this MFDS using manual keys on the operation display board 313, and the user can select one of these input methods according to his/her preference. It has become.

One of these input methods is to press the read total page setting key 60.
6, etc., to set the total number of pages to be read.Another input method is to use the reading start page setting key 604. This is a method of inputting the first page and last page to be read using the last page to read setting key 605 or the like.

The number of pages to be turned in the MFDS may be input by any of the above methods, as long as the number of times the page is turned by the page-turning reading unit 1 can be calculated accurately.

Hereinafter, a method of calculating the number of page turns in each of the above-mentioned methods will be explained.

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

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

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

Here, type Y for the first page you want to read and Z for the last page.
If the total number of pages you want to read is X, then I can do it.

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 images thereof.

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

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

First, the sheet document through mode will be explained.

This sheet document through mode includes a single-sided document reading mode and a double-sided document reading mode, and this double-sided document reading mode includes a same-position reading mode and a different-position reading mode.

Selection of these modes is performed as shown in FIG.

First, in the 9 single-sided original reading mode, FIG. 41 and
As shown in FIG. 42, when a sheet original 200 is set face down on the sheet original tray 94 and the start key 600 is pressed in this state, the turning conveyor belt drive motor 61 is first turned on and driven. The roller 12 is rotated, and the turning conveyor 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 paper is fed from the second paper feed pulley 130 attached to the first belt support roller 97 via the paper feed drive belt 127. The paper feed roller 96 is rotated,
Sheet original 200 is conveyed toward paper feed separation pad 95 .

This paper feed separation pad 95 separates the lowest one sheet original 200 from other sheet originals, and
While being guided by the conveyance guide 109 and the second conveyance guide 109, the sheet is conveyed to a position where it contacts the turn-over conveyance belt 8.

Here, this second conveyance guide 109 includes a paper feed sensor 2.
6 is attached, and by this paper feed sensor 26,
The conveyance timing of the sheet original 200 is set so that the paper feed clutch 128 is turned off after the trailing edge of the sheet original 200 is detected.

On the other hand, during this time, along with the rotation of the turning conveyor belt 8, a high AC voltage is applied to the second bias roller 11 from the AC power supply 35, and a striped charge pattern is formed on the turning conveyor belt 8.

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

At this time, the linear speed of the turning conveyor belt 8 is 3 at the same magnification.
60 countries/S, and when changing the magnification, it changes according to the set magnification.

On the other hand, in this mode, the page turning reading unit 1 is located at the end position 11-C, and the first reading sensor unit 9 reads the document information of the sheet document 200 conveyed by the turning conveyor belt 8. The images are read out sequentially (pixel density is 400 dpi).

After this reading, the sheet original 200 is the third one! m feed guide 110 and fourth opposing roller 103. Fifth
Opposed roller 1o4. Sixth opposing roller 105. The paper is pinched and conveyed by the seventh opposing roller 106 and discharged onto the paper discharge tray 23 from the paper discharge port 117 .

In the third conveyance guide 110 near this paper ejection port 117,
A paper discharge sensor 28 is attached to detect a paper discharge jam of the sheet document 200 to be discharged.

When the reading operation of the first sheet original 200 is completed, the paper feed clutch 128 is turned on again at a predetermined paper feeding timing, and the second sheet yKvs2 is read.
0o is fed and a reading operation similar to that described above is performed.

In this way, the sheet M documents 200 set in the sheet document tray 94 are fed and read in sequence, and when the last (top) sheet document 200 is fed and the sheet document sensor 25 is turned off, Second bias roller 11
After the power source of the MFDS is switched to a high-frequency AC voltage, the charge pattern on the turning conveyor belt 8 is neutralized, and this final sheet document 200 is ejected, all operations of the MFDS are stopped.

The above-mentioned reading operation is an operation when a printer having a back side ejection function is connected to this MFDS, and thereby the sheet original 200 and the printed transfer paper are ejected in page alignment.

Here, if the printer connected to this MFDS has only a front side ejection function, the sheet original 200 is set face up on the sheet original tray 94, and the second reading sensor unit 14 reads the sheet original 200. By reading this sheet original 200, the sheet original 200 is
00 and printed transfer paper are page-aligned and ejected.

Further, the other operations when a printer with the front side paper ejection function is connected are the same as when a printer with the back side paper ejection function is connected.

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

In this 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 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 this double-sided original reading mode is the same as that of the single-sided original reading mode, as shown in FIGS. 43 and 44, but in this mode, page turning Reading unit 1
is located at its home position 111-A,
At the same position as the second reading sensor unit 14 on the side of the document table 18, the reading of document information on both the front and back sides of the sheet document 200 is performed by these first reading sensor units 9. And, by the second reading sensor unit 14,
executed in parallel at the same time.

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

As is clear here, in this separate position reading mode, the interval between the reading positions of the first reading sensor unit 9 and the second reading sensor unit 14 is larger than the length of the maximum size M document. The document information on both the front and back sides of the sheet document 200 read by the first reading sensor unit 9 and the second reading sensor unit 14 is output in chronological order.

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

In this sheet scan mode, Fig. 47 and Fig. 4
As shown in FIG. 8, a sheet original 200 is set facing upward on the sheet original tray 94, and when the start key 600 is pressed in this state, first, the power of the turning conveyor belt drive motor 61 is turned on, and the drive roller 12 is rotated, and the turning conveyor 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 paper is fed from the second paper feed pulley 130 attached to the first belt support roller 97 via the paper feed drive belt 127. The paper feed roller 96 is rotated,
Sheet original 200 is conveyed toward paper feed separation pad 95 .

This paper feed separation pad 95 separates the lowest one sheet original 200 from other sheet originals, and
While being guided by the conveyance guide 108 and the second conveyance guide 109, the sheet is conveyed to a position where it contacts the turn-over conveyance belt 8.

Here, this second conveyance guide 109 includes a paper feed sensor 2.
6 is attached, and by this paper feed sensor 26,
The conveyance timing of the sheet original 200 is set so that the paper feed clutch 128 is turned off after the trailing edge of the sheet original 200 is detected.

On the other hand, during this time, along with the rotation of the turning conveyor belt 8, a high AC voltage is applied to the second bias roller 11 from the AC power supply 35, and a striped charge pattern is formed on the turning conveyor belt 8.

As a result, by this turning conveyor belt 8.

The fed sheet original 200 is attracted and conveyed.

The linear speed of the turning conveyor belt 8 at this time is:

The speed is set to 360 mm/s, and sheet original 2
When the leading end of the belt 0o reaches the home position 1-A, the rotation of the turning conveyor belt 8 is stopped.

On the other hand, in this mode, the page turning reading unit 1 is located at its home position 1-A, and after the rotation of the turning conveyor belt 8 is stopped, the page turning reading unit 1 is moved by the turning unit drive motor 60. While being moved toward the end position 111-C by the first reading sensor unit 9, the sheet document 2 conveyed by the turning conveyor belt 8 is
00 manuscript information is read out (pixel density is 400
dpi).

When reading this document information, the first bias roller 3
Then, a high frequency AC voltage is applied by the first high voltage power supply 320, and the charge pattern formed on the turning conveyor belt 8 is neutralized.

This prevents the sheet document 200 from entering the page-turning reading unit 1 when the page-turning reading unit 1 is moved back.

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

Also, when the page turning reading unit 1 returns, the first reading sensor unit 9 reads the sheet document 200.
At the same time, a high-voltage AC voltage is applied to the first bias roller 3 from the first high-voltage power supply 320, and a striped charge pattern is formed on the turning conveyor belt 8. The paper is turned over and is attracted to the conveyor belt 8 and fixed.

After the above-described operation is repeated the set number of times, the turning conveyor belt drive motor 61 is turned on, the turning conveyor belt 8 is rotated, and the sheet document 200 that has been read is delivered to the paper ejection port. 117 to paper output tray 2
The paper is ejected onto 3.

In the third conveyance guide 110 near this paper ejection port 117,
A paper discharge sensor 28 is attached to detect a paper discharge jam of the sheet document 200 to be discharged.

When the reading operation of the first sheet original 200 is completed, the paper feed clutch 128 is turned on again at a predetermined paper feeding timing, and the second sheet original 200 is read.
is fed, and a reading operation similar to that described above is performed.

In this way, the sheet originals 200 set on the sheet original tray 94 are sequentially fed and read, and when the last (top) sheet original 200 is fed and the sheet original sensor 25 is turned off, the first sheet original 200 is read. 2 bias roller 11
After the power source of the MF is switched to the high-frequency AC voltage of the second high-voltage power source 321, the charge pattern of the turning conveyor belt 8 is neutralized, and this final sheet document 200 is ejected, the MF
All operations of the DS are stopped.

Next, the sheet document manual R close mode in this sheet document through mode will be explained.

The operation in this sheet document manual opening/closing mode is the same as the operation in the sheet document scan mode described above, as shown in FIGS. 49 and 50. The sheet conveying means and the power supplies for sheet suction are turned off, and the sheet original is replaced manually by the operator.

The operation control of the page turning reading unit 1 in this MFDS will be explained below.

FIG. 51 shows an operation control circuit for 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, and is incorporated into the turning unit drive control board 312.

In the 511ij, the microcomputer 520 (
The microcomputer (hereinafter simply referred to as a microcomputer) also performs mode control and sequence control of the MFDS (details are not shown).

As such a microcomputer 520, for example, μPD7
Programmable interval timer 5 with 1054G
21 (hereinafter simply referred to as a timer) is connected.

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

The period of this PWM control is 50 (μ5ec), and is controlled with a resolution of 400 bits.

This timer 521 is connected to an 8 MHz oscillator 522 and is configured to receive a clock signal.

Further, the turning unit drive motor 60 is connected to the microcomputer 52.
0, the driving transistors Q1 to Q.

connected via.

That is, when the transistors Q,, Q, are ON and the transistors Q,, Q□ are OFF, the turning unit drive motor 60 is supplied with a current rotating clockwise (CW), and the transistors Q,, Q .

is ON and transistors Q,,Q, are OFF,
The turning unit drive motor 60 has a counterclockwise direction (CC
W) is supplied with a rotating current.

Here, the turning unit drive motor 6o is rotated one clockwise direction (
CW), the page turning reading unit 1 is moved forward, and when the turning unit drive motor 60 rotates counterclockwise (CCV).

The page turning reading unit 1 is set to be moved backwards.

The rotation direction of this turning unit drive motor 60 is determined by the port PF6 of the microcomputer 520. It is controlled by the CW multiplied signal and the CCW signal respectively output from the PF7.

Further, an encoder 152 that generates pulses according to the rotation of the turning roller 2 is directly connected to the turning roller 2.

Here, the encoder 152 generates two pulse signals with different phases depending on the rotation amount and rotation direction of the turning unit drive motor 60.

One is one person phase encoder pulse ENCA, the other one is
One is the B-phase encoder pulse ENCB.

The A-phase encoder pulse ENCA is input to the counter input terminal C1 of the microcomputer 520 via the 1-frequency multiplexer 524.

As a result, the microcomputer 520 determines that the pulse interval of the physiognomic encoder pulse ENCA is determined by the internal counter of the microcomputer 520 (the oscillation frequency of the oscillator 525 of the microcomputer 520 is 10
MHz).

In addition, 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, the turning Calculation of the rotation speed of the unit drive motor 6o, calculation of the motor control amount by proportional/integral control calculations, and output (timer 5
21) etc. are performed.

Specifically, the A-phase encoder pulse ENCA (7) output is sent to the branch multiplexer 524 according to the target speed.
By dividing the frequency by 1, 2, and 4.8, an interrupt input signal is provided to the counter input terminal C1.

Here, when the frequency is divided by 1, the first reading sensor unit 9
However, by one pulse of the encoder 152, it becomes 0.116
(2) By moving, the speed is calculated inside the microcomputer 520 according to the interrupt interval.

Then, the output timer value is determined by proportional/integral calculation processing based on the calculated speed data.

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 to detect the phase difference between the two. The rotation direction of the unit drive motor 6o is determined.

That is, the rotational direction of the turning unit drive motor 60 is determined by inputting the state of the B-phase encoder pulse ENCH at the rising edge of the A-phase encoder pulse ENCA to the port of the microcomputer 520.

Next, speed control of the turning unit drive motor 6o will be explained.

The speed control of this turning unit drive motor 60 is PWM.
done by control.

First, when the page turning reading unit 1 scans the scanner,
That is, when the turning unit drive motor 60 rotates clockwise, the transistor is turned on, and the gate 527 is turned on by the PWM output from the timer 521.
The transistor Q is set to 0N10FF via the transistor Q to generate a potential difference between both terminals of the turning unit drive motor 60, and the turning unit drive motor 60 is rotated at a speed corresponding to the duty ratio of the PWM signal.

On the other hand, when the page turning reading unit 1 returns,
Contrary to the above case, while turning on the transistor Q, the PWM output from the timer 521 turns the transistor Q2 into 0N10FF via the gate circuit 5.28.
Then, a potential difference in the opposite direction is generated between both terminals of the turning unit drive motor 60, and the turning unit driving motor 60 is rotated at a speed corresponding to the duty ratio of the PWM signal.

(Effects of the Invention) According to the present invention, during automatic double-sided copying in which the seal image information is formed on both sides of the transfer paper, the image information is sequentially printed as desired from the front page of the transfer paper, starting from the page from which the document reading means starts reading. It is possible to form images, eliminate the occurrence of blank sheets of transfer paper, and eliminate waste.

Further, according to the present invention, during automatic double-sided copying in which the image information is formed on both sides of the transfer paper, the desired original page of the book manuscript is sequentially printed on the transfer paper from the page that the manuscript reading unit starts reading. It can be copied as required.

[Brief explanation of drawings]

Figure 1 is a schematic cross-sectional view of a multi-function document scanner (MFDS) embodying the present invention;
The figure 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, and FIG. 4 is a schematic cross-sectional view of the drive system of the MFDS.
A perspective view of the end of the page turning reading unit in S,
FIG. 5 is a cross-sectional view of the roller end showing the support structure of the roller constituting the page turning reading unit, FIG. 6 is a side view showing the unlocking state of the transport section locking device in the MFDS, and FIG. 7 is the above-mentioned FIG. 8 is a side view showing how the transport section locking device starts locking, FIG. 8 is a side view showing how the transport section locking device completes locking, and FIG. 9 shows the MFD.
FIG. 10 is a perspective view showing the appearance of the printer equipped with the MFDS when the transport section is open, and FIG. 11 is a perspective view showing the appearance of the printer equipped with the MFDS. FIG. 12 is a perspective view of the vicinity of the end of the first reading sensor unit, FIG. 12 is a side view of the vicinity of the end of the first reading sensor unit, and FIG. 13 is a support structure of the end of the first reading sensor unit. 14 is a side view of the rear side of the turning reroller 2 of the page turning reading unit; FIG. 15 is a sectional view showing the structure of the central reference positioning portion of the document placement surface in the MFDS; FIG. 16 is a partially enlarged sectional view; The figure is a plan view of the operation display board in the MFDS, FIG. 17 is a schematic sectional view of the printer, and FIG. 18 is a schematic cross-sectional view of the printer.
The figure is a plan view of the writing section of the printer, FIG. 19 is a diagram of the operation of the switching claw that switches the transfer paper conveyance path of the printer, FIG. 20 is a schematic sectional view of the page turning and reading unit, and FIG. 22 is a schematic sectional view showing the operating mode of the MFDS, FIG. 23 is an explanatory diagram of the flip-up conveyor belt in the MFDS, and FIG. 24 is the flip-up conveyor belt. FIG. 3 is a partial perspective view showing a page turning operation. FIG. 25 is a diagram showing the pitch characteristics of the conveying force of the flipping conveyor belt, FIG. 26 is a diagram showing the pitch characteristics of the adsorption force of the flipping conveyor belt, and FIG. 27 is a diagram showing the pitch characteristics of the conveying force of the flipping conveyor belt. Line section showing applied voltage characteristics, 28th! I is a diagram showing the applied voltage characteristics of the attraction force of the above-mentioned reversible conveyor belt, Fig. 29 is an electrical equipment block diagram of the above-mentioned MFDS, and Fig. 30
31 is a mode transition diagram when the MFDS operates in the book document reading mode, FIG. 32 is a flowchart showing the switching operation of each mode, and FIG. The figure is a flowchart showing the operation in the book original reading mode, FIG. 34 is a timing chart showing the operation in the two-page spread continuous reading mode in the book original reading mode, and FIG. 35 is the one-page spread reading mode in the book original reading mode. FIG. 36 is a timing chart showing the operation when the book manuscript is set to be read from the right page in the one-page spread reading mode, and FIG. 37 is a timing chart showing the operation in the one-page spread reading mode. FIG. 38 is a block diagram of a circuit that delays the transfer timing of read data; FIG. 38 is a timing chart showing the operation of the circuit that delays the transfer timing of read data in the one-page spread read mode; FIG. A timing chart showing the operation of the top mode in the one-page spread reading 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 single side reading in the sheet original through mode. 42 is a timing chart showing the operation in the one-sided reading mode, FIG. 43 is a flowchart showing the same-position reading mode in the sheet document through mode, and FIG. 44 is a timing chart showing the same-position reading mode in the sheet document through mode. FIG. 45 is a flowchart showing the operation of the separate position reading mode in the sheet document through mode; FIG. 46 is a timing chart showing the operation of the separate position reading mode;
FIG. 7 is a flowchart showing the operation of the sheet original scanning mode in the sheet original reading mode, No. 48.
49 is a timing chart showing the operation in the sheet document scanning mode, and FIG. 49 is a flowchart showing the operation in the sheet document manual opening/closing mode in the sheet document reading mode. 50'@ is a timing chart showing the operation in the sheet document manual opening/closing mode, and FIG. 51 is a scanning control circuit diagram of the page turning reading unit. A...Multi function scanning document scanner (MFDS), l...Page turning reading unit, 1-A...Home position, 1-C...End position, 8... Turning conveyor belt, 9.
... Turning conveyor belt, 14... Second reading sensor unit, 24... Central reference positioning section, 52...
Turning unit drive belt, 60... Turning unit drive motor, 61... Turning conveyance belt drive motor,
92... Book manuscript, 200... Sheet manuscript. 300... Printer, 310... Main control board, 311... Turning conveyor belt drive control board, 31
2... Turning unit drive control board, 313...
Operation display board, 314... first WJ image processing board,
317...Second image processing board.

Claims (1)

[Scope of Claims] 1. A page turning means for turning over the pages of a book manuscript placed in a spread-open manner one by one at a manuscript reading position on a manuscript placing surface, and scanning the spread-open manuscript surface of the book manuscript. In an image forming method of an image forming apparatus equipped with a document reading means for reading document information, during automatic double-sided copying in which the image information is formed on both sides of transfer paper, the document reading means reads the document information in order from the first page. . An image forming method, characterized in that images are formed sequentially from the surface of the transfer paper. 2. A page turning means that turns over the pages of a book manuscript placed in a spread-open manner one by one at the manuscript reading position on the manuscript placement surface, and a page-turning means that scans the spread-open manuscript surface of the book manuscript to read manuscript information. a document reading means for performing the
In the image forming method of the image forming apparatus, the image forming apparatus is equipped with a reading start page selection means for specifying from which page of the document information for two spread left and right pages of the book manuscript, reading is to be started. An image forming method characterized in that during automatic double-sided copying in which the image information is formed on a sheet of paper, the pages are sequentially copied onto transfer paper from the page from which reading by the document reading means starts, in accordance with the original page order of the book document.