JP3376042B2 - Book original image forming apparatus and book original reading apparatus - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an original document image forming apparatus such as a copying machine and a facsimile , an original document image forming method , and original reading.
The present invention relates to a picking device and a document reading method .

[0002]

2. Description of the Related Art Conventionally, a copying apparatus counts the number of copies one by one and continuously performs a copying operation until the count value reaches a set value. In addition, the copying apparatus reads two originals by scanning the two originals set side by side on the original table by operating the start key once.
Some have a page continuous shooting mode in which the read image is separately copied onto two transfer sheets, and both spread pages of a document can be copied by a single start key operation.
Further, although a page-turning device for turning pages of the original document has been proposed, there is no device for automatically turning the pages of the original document to read an image of a double-page spread and forming the read image on a transfer sheet. Further, there is no copying apparatus that specifies the page of the original document to be copied, reads the image of the page, and forms the read image on the transfer paper.

[0003]

Generally, books and books are bound with double-sided printed matter, and there are also bound with double-sided originals such as stapler stoppers and files for office documents. When copying these manuscripts, it is required to form an image for each page of the manuscript on one page of the paper, or to form images of both spread pages of the manuscript on one page of the paper. However, such copying with different image forming forms cannot be performed with the above copying apparatus.

[0004] The present invention improves the above drawbacks, different imaging Motohara draft image forming apparatus and as possible out to perform the form
An object of the present invention is to provide the document reading device .

[0005]

In order to achieve the above-mentioned object, the invention according to claim 1 places the original document in an open state.
The document table and the image data of the left and right pages of the opened document are displayed.
The reading means for reading and the reading means
An image is formed on the transfer paper based on the image data of the left and right pages of this document.
In this document image forming apparatus having an image forming unit
Image of the left and right pages of the opened original document is formed on one sheet of transfer paper.
Spread page setting means for setting the spread page mode
Form an image for each left and right pages of the opened original document on one sheet of transfer paper
Independent page setting means to set the independent page mode
Start image formation from either left or right page of this document
And a start page setting means for setting the start page setting means.
Left and right sides of this manuscript opened by setting the start page by the setting means
If there is an unnecessary page image among the page images, the page spread
When the spread page mode is set by the page setting means
Is the left and right pages of the original document read by the reading means.
Image data of the unnecessary pages among the image data of
Image is formed on one sheet of transfer paper by converting
When the independent page mode is set by the setting means
Is for the left and right pages of the original document read by the reading means.
Image of the unnecessary page image data among the image data
Transfer paper with no image formation and only the required page image data
An image is formed on one sheet.

According to the second aspect of the invention, the manuscript is opened.
Images on the left and right pages of the opened document and the document table
Reading means for reading data and reading by this reading means
Output the image data of the left and right pages of the taken original document to an external device
In this document reading apparatus having an output unit for
The image data of the left and right pages of the original manuscript are treated as one image data.
Set the double-page spread mode and output the double-page spread mode.
Separate column and image data for each left and right pages of the opened original
Setting independent page mode to output as image data of
One of the page setting means and the left and right pages of the opened original
Set to start outputting image data from
A page setting means, and the image data by the start page setting means.
The left and right pages of this document opened by setting the data output start page
If there is unnecessary page image data in the image,
If the spread page mode is set by the page setting means
The right and left sides of the original document read by the reading means.
Of the page image data, the unnecessary page image data is
Data and output as one image data,
When the independent page mode is set by the standing page setting means
Is the left and right pages of the original document read by the reading means.
Output the image data of the unnecessary page among the image data of
Without outputting the image data of the required pages.
It

[0007]

[0008]

[0009]

In the invention according to claim 1, the spread page setting means is
Form the images of the left and right pages of the opened original on one sheet of transfer paper
The spread page mode is set, and the independent page setting means is a spread book.
An independent page that forms an image for each of the left and right pages of the original on one transfer sheet
Set the mode. The start page setting means is for the opened manuscript.
Set to start image formation on either the left or right page.
Set. Open by setting the start page by the start page setting means
There is an unnecessary page image among the left and right page images of the original manuscript
In this case, the spread page mode is set by the spread page setting means.
If this is the case, the original document read by the scanning means
Image data of the unnecessary pages among the image data of the left and right pages of
Is converted to white data and an image is formed on one sheet of transfer paper.
The independent page mode is set by the independent page setting means.
The left and right sides of the original document read by the scanning means.
According to the image data of the unnecessary page among the image data of the page
No image is formed, only the image data of the required pages
An image is formed on one sheet of transfer paper.

According to the second aspect of the invention, the spread page setting procedure is
The columns are the image data of the left and right pages of the opened original.
Set the spread page mode to output as data, and set it as an independent page
The setting means uses the image data for each left and right pages of the opened original document.
Set the independent page mode to output as separate image data.
It The start page setting means is either the left or right page of the opened manuscript.
Set to start image data output from either
It Image data output by start page setting means Setting start page
Unnecessary pages of the left and right pages of the manuscript opened by
If there is image data, it will be spread by the spread page setting means.
When the page mode is set, the reading means
Of the image data on the left and right pages of the captured original document, the above is unnecessary.
Image data of different pages is converted to white data
Data is output as an independent page mode by the independent page setting means.
When the mode is set, the
Of the unnecessary pages of the left and right page image data
No image data is output, only the image data of the required page
Is output.

[0011]

[0012]

1 shows an example of an image forming system to which the present invention is applied. This system is a book / sheet original reading device (TPS: Turn the Page Scan).
er) is a system for outputting a document read image by an electrophotographic printer, and has a scanner unit 500 for reading a document and a printer 501 for forming an image. The scanner unit 500 reads a document by turning it over. It has a reading carriage (scanning unit) 200. The scanning unit 200 includes an image reading plate (SBC) 101 having a CCD (charge coupled device) for reading an original image.
And a VPU (Video) for performing processing from analog image signal from the image reading plate 101 to A / D conversion.
Processing Unit) 102, fluorescent lamp and its inverter power supply, heater, thermistor, fan,
It has a signal line of a load system such as a solenoid and a portion 502 for relaying wiring of a power supply line. This part 502 and VPU
102 are independent flexible cables for each IPU
It is connected to 103.

IPU (Image Processni)
g Unit (image processing device) 103 is a DRAM for storing a read image signal, which can be attached and detached by a connector.
IPU equipped with a frame frame 104 consisting of modules
The microcomputer in 103 is a scanning unit 200.
Motor for scanning the document and D for driving the document table
A load such as a C motor is controlled via the motor drive circuit 503, and a signal from the sensor is fetched. Printer 50
Reference numeral 1 denotes a main control plate 107 including a main control unit for controlling a copy mode, fetching a key signal from the operation unit 99, and a display control, and a sequence control unit for controlling a copy timing. The microcomputers of the control unit and the operation unit 99 mutually transmit and receive commands by serial communication. The main control board 107 includes inputs of sensors related to image formation of the printer 501, a motor,
Sequence control of image formation is performed by controlling solenoids, clutches, and the like.

FIG. 2 shows the data processing flow block of this system. This system is roughly divided into an image reading unit of TPS, an image data processing unit, and an image forming unit. The image reading plate 101 arranged at the right end portion of the scanning reading page turning portion of the TPS includes a CCD (charge coupled device), and the VPU 102 supplies a driving signal to the CCD based on the reference signal from the IPU 103, and the reading sensor 101 From the correction of the analog output signal to the digital signal conversion, 8-bit read image data for each dot is obtained.

Then, the VPU 102 has each dot 8
The bit read image data is synchronized with the clock and the gate signal in the main scanning direction, and IP is applied at a speed of about 7.5 MHz.
The data is output to the U 103, and the IPU 103 performs processing such as scaling of image data from the VPU 102 and high image quality processing of electrophotography. The IPU 103 processes the image data by γ
Gradation processing including correction is performed, converted into 4-bit dot video data suitable for writing, and the processed data is stored in the frame memory 104.

In this TPS, the reading speed of the original document is 9
0 mm / sec. , Sheet original reading scanning speed 90
mm / sec. , Image forming speed 180 mm / sec. As described above, there is a difference between the reading scanning speed and the image forming speed, and the frame memory 104 for one page of A3 size is used for the speed buffer. Further, the frame memory 104 is effective for document protection during repeat copy because the TPS comes into contact with the original document to scan and read it, and the image data is repeatedly read out a plurality of times during the repeat copy. is there. Further, when the TPS independently prints the images on the left and right pages of the original document, it is possible to divide the images on the left and right pages by using the frame memory 104 by one scanning reading, and the TPS controls the image forming unit. There is no need for synchronous scanning with the image writing of the laser printer 501 that constitutes it, or for rerunning.

Further, due to the speed correspondence of the IPU 103, the frame memory 104 of 4 bits for each dot is set in the IPU 1
Since the write data after the image processing by the IPU 103 is stored in the frame memory 104, the capacity of the frame memory 104 is halved for the read image data of 8 bits for each dot.

The capacity of the frame memory 104 is 400 DP
The image data of I is 128 Mbits for one page of A3 size, and is composed of a DRAM. Image data input from the IPU 103 to the frame memory 104 is performed in parallel for two dots of image data, and is about 3.8 MHz.
Sequentially at the speed of. On the other hand, in the image data from the frame memory 104, two dots of the image data are similarly output in parallel, and the IPU 103 is output at a speed of about 7.5 MHz.
It is sequentially output to the main control board 107 in synchronization with the clock sent from the device and the gate signals in the main scanning direction and the sub scanning direction.

The main control board 107 is a frame memory 1
The image data output from 04 at a high speed in accordance with the image forming speed of the laser printer 501 is converted into serial data of about 15 MHz, and a FIFO (First In FIRS)
t Out) memory further speeds up in the main scanning direction, about 1
Synchronize with the 8 MHz write clock. The 4-bit image data for each dot is pulse width modulated by the modulator to become light emission time data, which is transmitted to the laser (LD) controller as PWM data in synchronization with the write clock. The LD controller uses the PWM data to set L
L of electrophotographic laser printer via D driver
D105 is caused to emit light, and the photosensitive member is exposed and scanned to form an image.

The IPU 103 also controls the scanning of the TPS reading carriage (scanning unit) 200, and drives the scanner motor 106, which is a stepping motor for scanning the reading carriage 200 at the time of reading a sheet document and the main document, to perform reading. The scanning speed of the carriage 200 is 90 mm / sec. The scanning is performed at a constant speed, and when the magnification is changed, including the zoom from 71% to 141%, the reading carriage 200 is scanned at a linear speed of 1.41 to 0.71 times that.

Further, the scanner motor 106 is 120 mm / sec. When returning the reading carriage 200 to the scanning start position and when turning the page of the original document. The reading carriage 200 is scanned at the speed of. Main control board 1
Reference numeral 07 controls the image forming sequence of the laser printer 501 by taking in input signals from sensors related to image formation via the I / O 100 and outputting output signals to a motor, a solenoid, a clutch and the like. Also, IP
U 103 is an S for transferring the read image data to another system device such as a printer or a workstation.
Main control board 10 with CSI interface 98
Reference numeral 7 captures a signal from the operation unit 99 and outputs a signal to the operation unit 99.

The reading sensor 101 having a CCD is
The reflected light image of one line of the original in the main scanning direction is simultaneously read and converted into an electric signal. An electric signal from the reading sensor 101 is subjected to waveform correction such as clamping, amplification, and A / D conversion in the VPU 102, and is output to the IPU 103 as an 8-bit digital signal. IPU103 is VPU
Shading correction of the digital image signal from 102,
In addition to MTF correction, main scanning direction scaling, γ correction, image processing, high image quality processing is controlled.

Next, the TPS main document exposure method will be described. As shown in FIG. 14, this system includes two fluorescent lamps 201 and 202 as light sources for exposing the original document and two fluorescent lamps 203 and 20 as light sources for exposing the sheet original document.
The two fluorescent lamps 201 and 202 as the light source for exposing the original document are provided at both ends of the platen glass 205 arranged at the original document reading slit position in the direction orthogonal to the scanning direction of the scanning unit 200. They are located at the top.

These fluorescent lamps 201 and 202 expose the original document BO from the left and right sides through the platen glass 205. On the other hand, the two fluorescent lamps 203 and 204 as the light source for exposing the sheet document are respectively arranged at the sheet document reading slit positions in the direction orthogonal to the scanning direction on the upper part of the scanning unit 200, and these fluorescent lamps 203 are provided. ，
204 is a contact glass 206 on the upper surface of the system.
Through the scale 2 on this contact glass 206
The sheet document SO set according to 07 is exposed from both left and right sides.

The main document edge image detection circuit arranged in the IPU 103 detects the edge of the original document by the change of the read information by the specific pixels of the reading sensor 101 in the sub-scanning direction. The original document edge image detection circuit samples the pixel data before the image scaling processing in the main scanning direction in the IPU 103, and determines the edge of the original document from the pixel data. The end image detection circuit of the original document is instructed by the microcomputer in the IPU 103 to start and end the edge detection of the original document. The microcomputer in the IPU 103 manages the main document edge detection in the sub-scanning direction of the main document edge image detection circuit according to the scanning position of the scanning unit 200, and refers to the main scanning direction pixel counter to determine the main document edge image. It manages the detection of the edge of the original in the main scanning direction of the detection circuit. Then, the microcomputer in the IPU 103 calculates the page suction position and the main scanning direction image range of the main document from the end position of the main document detected by the main document end image detection circuit.

Next, the structure of the document table unit in the TPS will be described. As shown in FIGS. 3 to 5, the document table 1 is formed of a resin plate having a thickness of 2 mm, and a material having a high coefficient of friction such as extremely thin rubber is attached to the upper surface of the plate. is there. This high coefficient of friction material is laminated, coated, sprayed, etc., on the original table 1
May be formed on the upper surface of. The document table 1 in this example is
The document placing surface (upper surface) is formed to have an A4 size, and one is provided on each of the left and right sides of the apparatus main body center 2. A slide plate 3 is fixed under each document table 1. Each slide plate 3 is made of sheet metal whose front and rear sides and outer side surfaces are bent downward, and adjusting studs 4 are fixed near the device body center 2 on the front and rear side surfaces, respectively. . Each adjusting stud 4 has a hole at the end for fitting a slider pin described later.

On the other hand, the lower surface of the slide plate 3 is in contact with the upper surface of the upper and lower bases 5 having a low friction coefficient. Here, a rib of resin such as Teflon is formed on the upper surface of the upper and lower base 5,
It can move relative to the slide plate 3 smoothly left and right.
Further, the slide plate 3 and the upper and lower base 5 are relatively fixed by a size stopper 27 described later. On the lower side of the upper and lower pedestal 5, angles 7a and 7b with long holes in the left and right direction are provided at four front, rear, left and right positions. To the base 6 of this document table unit, another angle 8 having a fixed rotation axis and yet another angle 9 having a left-right elongated hole are fixed.

The link plate 1 is provided on the angle 8 and the angle 7b.
0 is rotatably supported, and the link arm 11 is rotatably supported by the angle 9 and the angle 7a. With respect to the angles 7a, 7a, 9 the link plate 10 and the link arm 11 can be slid smoothly in the left and right directions, respectively. Furthermore, when viewed from the front of the document table unit, there are two arm plates 10 and two link arms 1 in the front and rear.
Numeral 1 is rotatably supported by studs 12 at X-shaped intersections.

A torsion spring 13 is provided around the stud 12 as a torsion center, and a torsion spring 13 is provided between the link plate 10 and the link arm 11.
It is hung between and, by this torsion spring 13,
In FIG. 3, a force that constantly pushes the upper and lower pedestal 5 upward is working. The ascending / descending of the upper / lower table 5 due to this ascending force is performed by the scanning unit 200 whose vertical movement is restricted as described later.
Then, the document surface of the original document set on the document table unit comes into contact with the original document and is regulated. As a result, the pressure applied to the scanner unit 30 is maintained substantially constant regardless of the difference in the thickness of the original document.

The ends of the two upper and lower pedestals 5 on the side of the apparatus main body center 2 are connected to each other by a back support plate 14. The back support plate 14 is made of an elastically deformable material such as rubber, and the back cover of the original document BO is set on the back support plate 14. The back support plate 14 is constantly tensioned in the left-right direction by the action of a tension spring 17 described later. That is, the upper and lower pedestals 5 are provided with hooks 15, and the hooks 15 and the angles 16 of the link plate 10 are connected by the tension springs 17, so that the pair of left and right upper and lower pedestals 5 are pulled apart from each other. ing. As a result, tension is constantly applied to the spine support plate 14 and the spine cover of this document is supported without slack.

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

The size stopper 27 adjusts the distance between the left and right manuscript tables 1 according to the thickness of the original document to be placed, and fixes the slide plate 3 (manuscript table 1) and the upper and lower tables 5 relatively to each other. This is for allowing the document table 1 and the upper and lower table 5 to move integrally with each other. 5 and 6 show schematic configuration diagrams thereof. As shown in FIG. 4, a pair of angles 22 are attached to the lower side of the upper and lower pedestal 5 at predetermined intervals. As shown in FIG. 5, rods 23 are horizontally mounted and fixed to these angles 22. A sliding body 24 is mounted on the rod 23 so that it can slide smoothly in the longitudinal direction of the rod 23 through its through hole. The sliding body 24 has a short shaft 26 so as to be orthogonal to the rod 23.
A stopper 25 is rotatably supported on the short shaft 26. Here, the stopper 25 is extended so that the locking hole 25a formed at one end thereof is loosely fitted to the rod 23 and the other end thereof can be grasped by a finger.

The sliding body 24 is fixed to an arbitrary position of the rod 23 by the stopper 25 inclining with respect to the rod 23 and the rod 23 and the locking hole 25a of the stopper 25 meshing with each other. That is, in the sliding body 24, the stopper 25 is normally tilted by the locking spring 28,
The rod 23 and the stopper 25 are integrally fixed to the rod 23, but in FIG. 6, the operator rotates the extended end portion of the stopper 25 with a finger in a direction against the elasticity of the locking spring 28. By doing so, the engagement between the rod 23 and the locking hole 25a of the stopper 25 is disengaged, and the rod 23 and the stopper 25 can move along the rod 23. The sliding body 24 is fixed to the slide plate 3 (not shown). Therefore, as described above, by fixing the slide body 24 to the predetermined position of the rod 23, the slide plate 3 (original table 1) and the upper and lower table 5 are opposed to each other via the slide body 24 and the rod 23. It can be fixed at any position.

7 and 8 show the schematic construction of the open / close lock mechanism of the document table unit. As shown in FIGS. 7 and 8, the TPS has a configuration in which the scanner unit 30 is placed on the document table unit 35. Both of these units 3
0 and 35 are connected to each other by a hinge 36 provided on the rear side of the TPS, and have a shell-type opening / closing structure in which the front side of the TPS is opened. The open / close lock mechanism of the document table unit in this TPS is provided in both units 30, 3
5 is arranged in the front part. As described above, the side plate 18 is provided with the fixing pin 19.

Further, as shown in FIG. 7, a shaft 31 is rotatably supported on the scanner unit 30 side across the left and right side plates, and open / close lock claws 32 fixed to both ends of the shaft 31 are provided on the shaft. It rotates according to the rotation of 31. An opening / closing lever 33 is fixed near the center of the shaft 31, and by rotating the opening / closing lever 33, the opening / closing lever 33 is opened / closed with respect to the fixing pin 19 on the document table unit 35 side via the shaft 31. The lock claw 32 is adapted to be disengaged.

The opening / closing lever 33 is provided with a spring 34, and the spring 34 urges the opening / closing lever 33 in a direction in which the open / close lock claw 32 engages (locks) the fixed pin 19. As a result, in the state where the scanner unit 30 is closed as shown in FIG. 7, the opening / closing lock claw 32 engages with the fixing pin 19 and the document table unit 3
Locked against 5. Further, in this closed state, by lifting the opening / closing lever 33 against the urging force of the spring 34, the shaft 31 rotates and the opening / closing lock claws 32 from the fixing pin 19 on the document table unit 35 side.
Is detached, and as shown in FIG. 8, the scanner unit 30
Opens upward with the hinge 36 as the center of rotation, and the upper part (document table 1) of the document table unit 35 is opened.

Next, the document platen pressure fixing switching device and the document platen retracting device of this system will be described. The original platen 1, which is configured to be movable in the vertical direction by the link plate 10 and the link arm 11, is urged by a torsion spring 13 so as to constantly move upward. As a result, the scanner unit 30 can be
In the closed state, due to the rising behavior of the document table 1, the document surface of the main document BO which is opened and placed on the document table 1 is constantly pressed upward so as to be pressed against the lower portion of the scanner unit 30. There is.

The pressing force on the original surface of the original document BO is normally received by the scanning unit 200 in the scanner unit 30. In this state, due to the rising habit of the document table 1, the document table 1 and the main document BO bite into the scanner unit 30 and the smooth movement of the scanning unit 200 is hindered. Therefore, with the platen 1 raised to an appropriate position, fix the platen 1 and
It is necessary to prevent the document table 1 and the main document BO from excessively biting into the scanner unit 30 due to the rising behavior of the document table 1.

Further, as will be described later, the scanning unit 200
When scanning the original on the contact glass 206 arranged on the upper part of the scanner unit 30 by switching the scanning optical path inside, the lower part of the scanning unit 200 and the upper surface of the original platen 1 are prevented from contacting each other. It is necessary to retract the document table 1 below. The platen pressurizing / fixing switching device and the document platen retracting device are devices for solving these problems, and a configuration example of a mechanism in which both of these devices are combined by one mechanism is shown in FIGS. 9 to 14.

The control wire 40, which is one of the components of this mechanism, has a hook 41 at one end, as shown in FIG.
Is fixed, and the other hook 42 is fixed to the other end.
A spherical stop ball 45 is fixed near the substantially central portion thereof. The hook 41 is provided at the outer end of the link plate 10 (the document table 1
It is fixed on the side that moves up and down). The control wire 40 extending from the hook 41 is connected to the pulley 4
6, the direction is changed via the pulley 47, the control pulley 48
Is wrapped around.

As shown in FIGS. 10 and 11, the control wire 40 is guided into the groove 50 of the control pulley 48, and the stop ball 45 fixed near the center thereof is fitted into the stop hole 49 of the control pulley 48. ing. This ensures that the movement of the control wire 40 is converted into the rotational movement of the control pulley 48. The control wire 40 wound and extended on the control pulley 48 is constantly pulled by one end of a tension spring 43 hung on a hook 42 at one end thereof. The other end of the tension spring 43 is hooked on a hook 44 fixed to the base 6 of the document table unit 35.

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

Next, the lowering / fixing operation of the original platen 1 by the original platen pressure fixing switching device will be described. Figure 9
In FIG. 11, when the shaft 54 is fixed, when the original table 1 is pushed down by some external force, for example, the weight of the original document BO or the pressure applied by the turned pages, the original table 1 is pushed down. The end of the control wire 40 fixed to the hook 41 side is loosened. At the same time, the control pulley 48 is pulled by the tension spring 43 and rotates in the direction of the arrow a while absorbing the slack on the hook 41 side of the control wire 40, and the control wire 40 maintains the initial tension to the hook 44 side. Moving.

At this time, the control pulley 48 cannot rotate in the direction opposite to the arrow a due to the action of the one-way clutch 51. The control pulley 48 is not rotated in the direction opposite to the arrow a by the ascending force of the document table 1, and the control pulley 48 is stopped while maintaining the position rotated in the arrow a direction. Further, along with the stop of the control pulley 48, the movement of the control wire 40 is also stopped, whereby the document table 1 is lowered to a position where it is pushed down by an external force and then stopped.

Here, the fixing of the shaft 54 is performed by a document table lifting mechanism described below. That is, as shown in FIG. 12, a gear 56 is fixed to the shaft 54 so as to rotate integrally with the shaft 54.
Further, as shown in FIG. 13, the gear 56 is provided with a side plate 55.
The gear 57 meshes with another gear 57 rotatably supported by a stud 59 fixed to, and the rotation is transmitted to the gear 57.

Further, the gear 57 is formed integrally with a worm wheel 58, and a worm gear 60 fixed to the output shaft of a document table raising / lowering motor 61 meshes with the worm wheel 58. With this configuration, when the document table raising / lowering motor 61 is stopped, the worm wheel 60 cannot rotate due to the meshing between the worm gear 60 and the worm wheel 58, and the gear 56 meshed with the gear 57 integrated with the worm wheel 58. The shaft 54 connected through the is fixed.

Next, the operation of retracting the document table 1 below the document table unit 35 will be described. 12 to 14, when the platen raising / lowering motor 61 is driven so that the gear 56 rotates in the direction of the arrow b, the one-way clutch 51 causes the control pulley 48 and the shaft 54 to rotate integrally, and the control pulley 48 is rotated. Rotates in the direction of arrow a in FIG. 9, and the control wire 40 moves to the hook 44 side.

By the movement of the control wire 40, as shown in FIG.
In FIG. 3, the left and right original plates 1 are lowered, and the upper surface of each original plate 1 (the original surface of the original document BO in this example) is retracted to a position below the original plate unit 35, which is separated from the scanning unit 200. This retracting operation is executed when the power of the apparatus main body is turned on or when the apparatus is in a standby state in which scanning for reading is not performed, and when an original document on the contact glass 206 arranged above the scanner unit 30 is read.

Next, the operation of pressing the document table 1 above the document table unit 35 will be described. Contrary to the above-described retracting operation, in FIGS. 12 to 14, when the platen raising / lowering motor 61 is driven so that the gear 56 rotates in the direction of arrow c, the shaft 54 moves in the direction opposite to the direction of arrow a in FIG. The control pulley 48 is freely rotatable with respect to the shaft 54 by the action of the one-way clutch 51. Here, the force of the torsion spring 13 that pushes the document table 1 upward is set to be stronger than the force that pulls the control wire 40 downward.

Therefore, when the control pulley 48 can freely rotate in the direction opposite to the direction of the arrow a, the control wire 40 is moved toward the hook 41 by the force of the torsion spring 13 that pushes the document table 1 upward. Move to. By the movement of the control wire 40, the left and right manuscript tables 1 are raised in FIG. 14, and the manuscript surface of the main manuscript BO which is placed open on the upper surface of each manuscript table 1 is pressed by the scanning unit 200. .

In this way, the left and right manuscript tables 1 are raised,
When the document table raising / lowering motor 61 is continuously driven in a state where the document surface on each document table 1 is in pressure contact with the scanning unit 200, the shaft 54 can be freely rotated with respect to the control pulley 48 by the action of the one-way clutch 51. Thus, the pressure contact state of the document surface to the scanning unit 200 is maintained. This pressing operation is executed only when the scanning unit 200 is on the document table 1, as described later.

As shown in FIG. 14, the platen pressurizing / fixing switching device and the platen retracting device comprise a pair of left and right platen plates 1.
One set is provided for each of them, and they are independently controlled according to the moving position of the scanning unit 200. That is, the pair of left and right platen raising / lowering motors 61, which are the drive sources of the platen pressure fixing / switching device and the platen retracting device, are independently controlled by the microcomputer in the IPU 103 via each platen raising / lowering motor driver. Controlled.

FIG. 15 shows the downward evacuation operation of the document table 1 in the evacuation operation mode described above, and FIG. 16 shows its timing chart. In this retract operation mode, I
As shown in FIG. 16, the microcomputer in the PU 103 reverses the left and right platen raising and lowering motors by a predetermined number of revolutions before starting the movement of the scanning unit 200 to move the left and right platen 1 as shown in FIG. Lower down.
After that, the microcomputer in the IPU 103 drives the scanner motor 106 to move the scanning unit 200 in a predetermined direction to perform scanning. If needed here,
This scanning is repeated many times. Then, when the microcomputer in the IPU 103 finishes the save operation mode,
Rotate the left and right platen lift motors forward a specified number of times,
Return the left and right platens 1 to their original positions.

Next, the pressing / fixing mode of the document table 1 will be described. When setting the original document BO on the TPS, as shown in FIG. 17, the spine of the original document BO is applied to the back support plate 14, the size stopper 27 shown in FIG. The document is moved according to the thickness of the document BO. By this movement of the slide plate 3, the spine cover of the original document BO is pinched by the inner ends of the left and right original plates 1, and in this state, the slide plates 3 are fixed by the size stoppers 27, and then the original document BO The reading start page is opened, the two-page spread original document is set on the left and right document tables 1, and the scanner unit 30 is closed. As a result, as shown in FIG.
The open / close lock claw 32 engages with the fixed pin 19 and is locked with respect to the document table unit 35 in the state where the scanner unit 30 is closed. At this time, the open / close lock sensor 20 detects that the scanner unit 30 is closed.

By the way, at the end of the operation of this TPS,
The scanning unit 200 returns to the center home position (center point of the set original document BO) shown in FIG. Therefore, even when the original document BO is set on the TPS, the scanning unit 200 is located at the center home position. As a result, the main document BO is set with the center of the TPS as a reference, so that when the scanner unit 30 is closed, any size of the main document can be reliably pressed and the setability of the main document is improved. It

By setting the main document as a central reference in this way, the control timing (reading start; reading start;
(Reading end timing, page turning start timing, etc.)
Is relatively easy to take. Further, by setting the main document as the center reference in this manner, it becomes easy to detect the edge of the main document, which is also an advantage.

On the other hand, when reading an original set on the contact glass 206 of the scanner unit 30,
As shown in FIG. 4, the right end portion of the scale 207 arranged on the left side of the contact glass 206 serves as the end face reference with the reference set position of the document. As described above, in this case, the reference set position is different from the reading start position of the original document, and the configuration is set to the minimum size.
That is, by setting the reference set position of the document as the end face reference in this way, the reading start point of the document set on the contact glass 206 is always constant,
The control becomes easy.

When the TPS enters the sheet mode for reading the original on the contact glass 206, the scanning unit 200 moves to the left from the center home position and stops at the edge home position detected by the edge HP sensor. (FIG. 17), wait until the reading condition is input and the start button is pressed. Further, here, the scale 207 is arranged on the right side of the contact glass 206, that is, on the page-turning start side of the original document, the original document is placed on both the original table 1 and the contact glass 206, and the scanning unit 200 scans the original document. It is possible to read the original on the contact glass 206 at the same time as turning the original on the original table 1.

In the case of this configuration, the optical path of the reading optical path of the scanning unit 200 is switched during the page turning scanning of the original document, as will be described later. With this configuration, the reading direction in the sub-scanning direction of the scanning unit 200 is the same on the document table 1 and on the contact glass 206, and the sheet discharging direction is the same during printing, so that the memory is reversed. It becomes unnecessary.

Further, the original document BO is set on the document table 1 and the sheet document SO is set on the contact glass 206, and the scanning unit 200 is scanned from the end home position to read the original document BO on the document table 1. This scanning unit 2
While turning the pages of this manuscript BO with the return scan of 00,
A mode for reading the sheet document SO on the contact glass 206 can also be set. In this case, even during the read page turning operation of the main document BO, the read page turning operation of the main document BO is interrupted by setting the sheet document SO on the contact glass 206 and setting the interrupt mode. Both originals can be read without scanning. Here, the scale 207 is the contact glass 206.
An image obtained by reading the original on the contact glass 206, whichever is arranged on the upper side, is mirror-inverted in the main scanning direction and stored in the frame memory 104.

In this example, the reference set position of the original in the depth direction on the original table 1 and the contact glass 206 is configured such that the front side of the apparatus main body is the abutting reference, and the original table 1 and the contact are set. The original setting operation on the glass 206 is facilitated. Further, when the operation of the scanning unit 200 in this example is started, the central H
The P-sensor again confirms that the scanning unit 200 is in the central home position. Then, when a start signal is sent from the operation panel 99, the scanning unit 200 moves to the left from the center home position,
It stops at the end home position detected by the end HP sensor.

17 to 21 are transition diagrams of the scanning unit 200 when the original table 1 is in the pressure / fixing mode.
FIG. 22 shows the timing chart. As shown in FIG. 17, the end home position of the scanning unit 200 is a reading page turning operation start point for the original document BO and an operation end point thereof. Further, in this end home position, the scanning unit 20
0 is not on the platen 1.

In the pressurizing / fixing mode of the original table 1, first, the microcomputer in the IPU 103 normally rotates the scanner motor 106 of the scanning unit 200 to move the scanning unit 200 rightward in FIG. Next, in the microcomputer in the IPU 103, the document pressing roller 281a on the right side of the scanning unit 200 is set to the document B.
When it reaches the left end of O (point A in FIG. 14), the left platen raising / lowering motor is normally rotated to put the left platen 1 in a pressurized state. As a result, the original document BO is pressed against the scanning unit 200, and optimum reading is performed.

Then, as shown in FIG. 19, right before the scanning unit 200 reaches the main document center point, the right document pressing roller 281a is caught on the left end of the right document table 1 (point B in FIG. 22). . IPU10 at this point
The microcomputer in 3 causes the right platen raising / lowering motor to rotate in the forward direction to put the right platen 1 in a pressurized state. Then, the scanning unit 200 passes the center point of the book document and starts reading the right page of the book document BO.

After that, the left document pressing roller 281b is applied to the right end of the left document table 1 (point C in FIG. 22). At this point, the microcomputer in the IPU 103 stops the left platen lifting motor and fixes the left platen 1 in a fixed state. As a result, the original document BO does not bite into the scanner unit 30 and the original pressing sheet 2
82b is pressed and fixed to the next scanning unit 200.
Keep the same height until the passage of.

FIG. 20 shows an operating state of the scanning unit 200 during reading or turning of the right page of this document. The microcomputer in the IPU 103 stops the scanning unit 200, which has finished reading the right page of this document, with the left document pressing roller 281b hanging on the right end of the right document table 1 (point D in FIG. 21). , I
The microcomputer in the PU 103 reverses the scanner motor 106 to move the scanning unit 200 leftward in FIG. As a result, the scanning unit 200
The left side of the document pressing roller 281b is applied to the right end of the document platen 1 on the left side (point C) just before reaching the center point of the document shown in FIG. . At this point, the microcomputer in the IPU 103 causes the left platen raising / lowering motor to rotate in the normal direction to bring the left platen 1 into a pressurized state.

Next, the scanning unit 200 starts the operation of passing the center point of the original document BO and superposing the turned up right page on the left page of the original document BO. After that, the right document pressing roller 281a contacts the left end of the right document table 1 (point B). At this time, the microcomputer in the IPU 103 stops the right platen raising / lowering motor to fix the right platen 1 in a fixed state. As a result, this original B
O is pressed and fixed on the document pressing sheet 282a without biting into the scanner unit 30, and keeps the same height until the next scanning unit 200 passes. After that, the microcomputer in the IPU 103 moves the scanning unit 200 to the end home position shown in FIG. 17 and stops it.

Next, the structure of the scanner unit 30 will be described.

FIG. 14 shows a TPS (Turn the P
FIG. 1 is a diagram showing the overall configuration of the page scanner (page turning reader). In this TPS, a contact glass 206 is arranged on the upper part of the main body of the device, and a document such as a sheet material or a thick main document is set on the contact glass 206 by a pressure plate (not shown), and an optical path switching described later is performed. By scanning the document with the scanning unit 200, the document image on the contact glass 206 can be read. The upper half of the apparatus main body of this TPS is the scanner unit 30, and the scanning unit 200 has the inside of the scanner unit 30 shown in FIG.
In, a document is scanned by traveling in the left-right direction. FIG. 23 shows a configuration diagram of the scanning drive system of the scanning unit 200.

FIG. 23 shows the scanning drive system of the scanning unit 200 as seen from above the apparatus body. The timing belt 312 has a pulley 304 and a three-stage pulley 30 on the inner side of the apparatus main body.
2, the timing belt 31 is provided on the front side of the apparatus main body.
3 is stretched in the left-right direction by a pulley 305 and a two-stage pulley 306. Pulley 304 and pulley 30
The rotation shaft of No. 5 is supported by a spring 307 and a spring 308, respectively, and applies a predetermined tension to each timing belt 312, 313.

The three-stage pulley 302 is the timing belt 3
The motor pulley 301 is connected to the motor pulley 10 at 10, and the two-stage pulley 306 is connected to the timing belt 311 at each time.
The timing belt 311 connects the idler 303 to the spring 30.
A predetermined tension is obtained by pulling outward at 9. The rear side and the front side of the scanning unit 200 are fixed to the timing belts 312 and 313 by the clamp 315, and the timing belt 31 is rotated by the rotation of the scanner motor 106 that drives the rotation shaft of the motor pulley 301.
2, 313.

FIG. 24 shows the structure of the scanning unit 200. Original pressing rollers 281a and 281b are rotatably supported on the left and right sides of the lower side of the scanning unit 200, and sheet winding rollers 280a and 280b are rotatably supported on the outer sides thereof. Each sheet winding roller 280a,
280b includes left and right independent document holding sheets 282a,
282b is wound around the center end thereof, and the outer ends of the document pressing sheets 282a and 282b are fixed to the side plates of the scanner unit 30, respectively. These document pressing sheets 282a, 282
Reference numeral 82b is a sheet-shaped member in which a rubber resin is melted from both sides to a cloth (cloth) woven with Tetoron yarn, and the unevenness of the cloth left on the surface causes an attraction force by charging to act. It has a difficult structure.

Further, the sheet winding rollers 280a, 2
The 80b has a double structure as shown in FIG. 25, and the winding roller shafts 251a, 251
b and cylindrical sheet winding rollers 280a, 280b
The spring springs 252a and 252b are attached between and. As a result, the take-up roller shaft 251
By rotating a and 251b further than the state in which the document pressing sheets 282a and 282b are stretched, a certain amount of tension can be applied to the document pressing sheets 282a and 282b by the action of the spiral springs 252a and 252b.

Further, as shown in FIG. 26, sheet winding gears 232a and 232b are fixed to the outer end portions of the respective winding roller shafts 251a and 251b, and these sheet winding gears 232a and 232b are The left and right ends are fixed to the side plates of the scanner unit 30, and the idle gears 2 are attached to the drive rack 231 having teeth over substantially the entire length.
They are meshed with each other via 33a and 233b.
As a result, when the scanning unit 200 travels in FIG. 26, the sheet winding gears 232a and 232b rotate together with the idle gears 233a and 233b, and the winding roller shafts 251a and 251b and the spiral spring 2 respectively.
52a, 252b and each sheet winding roller 28
0a, 280b, through the respective original pressing sheet 282a,
282b is pulled out and wound up, and the tension of the left and right sheet winding rollers 280a and 280b is constantly
It is kept almost constant.

At this time, the original holding sheets 282a, 282
Each sheet winding roller 280a depending on the thickness of 82b,
The sheet take-up rollers 280a, 280a generated depending on the position of the scanning unit 200 due to the winding thickening of 280b.
Original pressing sheets 282a, 282 wrapped around 80b
The outer peripheral difference of b is absorbed by the respective spring springs 252a and 252b.

On the other hand, as shown in FIG. 24, a platen glass 205 for reading the original and a turning belt 208 for turning the pages of the original are provided between the original pressing rollers 281a and 281b. The platen glass 205 for reading the original document is arranged on the upstream side in the reading scanning direction of the scanning unit 200, and the turning belt 208 for turning the pages of the original document is arranged on the downstream side in the reading scanning direction of the scanning unit 200. There is. By arranging in this way, the run-up section for the reading scanning of the scanning unit 200 can be lengthened and the scanning can be stabilized. Further, in this example, the page turning mechanism is arranged on the lower side of the same unit and the reduction optical system is arranged on the upper side to realize the miniaturization of the apparatus.

Further, with this structure, the scanning unit 200 receives the main document (details will be described later) pressed by the left document pressing roller 281b and the turning belt driving roller 223, and receives these documents. Since the document surface (reading surface 273) positioned between the rollers can be read, an optimum image can be obtained. At this time, platen glass 2
As shown in FIG. 27, the position of the lower surface of the document No. 05 is set in consideration of the floating margin of the document surface in advance, and the left document pressing roller 2
It is set above the horizontal plane (reading surface 273) formed by connecting the lowest point of 81b and the lowest point of the turning belt drive roller 223 by a slight gap α. This gap α
The value of is set so that 2α is equal to or less than the depth of focus of the optical system, and is determined according to the reduction ratio of the optical system.

As shown in FIG. 28, the platen glass 205 has its side portion supported by a glass holder 269. Further, a glass chamfered portion 271 is provided at the lower end portion of the platen glass 205, and a holder chamfered portion 270 is provided at the outer lower end portion of the glass holder 269. At this time, the position of the side corner portion 272 of the glass chamfered portion 271 is configured to be located above the lower surface of the glass holder 269 by a slight height β, and the platen glass is operated during the operation of the scanning unit 200. The side of 205 is prevented from catching the page edge of the original document.

On the other hand, inside the platen glass 205,
As shown in FIG. 24, two fluorescent lamps 20 for illuminating the original are provided.
Reference numerals 1 and 202 are arranged on the left and right sides of the document reading section. The original document image illuminated by these fluorescent lamps 201 and 202 is shown in FIG.
The second mirror 220 and the third mirror 221 after being reflected by
Alternately, and finally passes through the lens 216 to be reduced and imaged on the CCD of the reading sensor 101. Also,
The turning belt 208 is a turning belt drive roller 223.
It is wound around a turning roller 224, and the turning belt drive roller 22 above the turning belt 208.
A charging roller 225 is disposed in contact with the outside of the portion slightly separated from the No. 4.

Further, as shown in FIG. 26, a turning belt drive gear 234 is fixed to the end of the driving shaft of the turning belt drive roller 223, and the turning belt drive gear 234 is connected via an idle gear 235. , Is engaged with the drive rack 232. As a result, the scanning unit 2
When 00 travels, the turning belt driving gear 234 rotates along with the idle gear 235 along the driving rack 232, and the turning belt driving roller 223 rotates to rotate the turning belt 2 at the same speed as the moving speed of the scanning unit 200.
08 rotates.

When reading a document set on the contact glass 206, the switching mirror 222, which is retracted to a position outside the reading optical path of the scanning unit 200 as shown in FIG. 24, is a keep solenoid shown in FIG. By the action of 255, it is moved to the position advanced into the reading optical path of the scanning unit 200 as shown in FIG. By the movement of the switching mirror 222, as shown in FIG.
As shown at 0, the first mirror 219 and the second mirror 220
The optical path between and is switched from the platen glass 205 side shown by the broken line to the contact glass 206 side shown by the solid line, and the original image on the contact glass 206 illuminated by the two fluorescent lamps 203 and 204 is the original document. Similarly to the case of, the second mirror 220 and the third mirror 221 alternately reflect the light, pass through the lens 216, and are reduced and imaged on the CCD of the reading sensor 101.

As shown in FIG. 29, the switching mirror 222 is supported by a switching mirror bracket 257, and the switching mirror bracket 257 is rotatably supported by the upper fulcrum 258 of the optical path adjusting plate 259. . The keep solenoid 255 is arranged at the end of the switching mirror bracket 257 on the side opposite to the side where the switching mirror 222 is supported.
When 55 is turned on / off, the switching mirror bracket 257 is swung about the upper fulcrum 258 of the optical path adjusting plate 259 as an axis between the position shown by the broken line and the position shown by the solid line in FIG.

As a result, the position of the switching mirror 222 is set to the scanning unit 200 shown in FIG. 24 as described above.
The original document reading position retracted from the reading optical path and the sheet original reading position advanced into the reading optical path of the scanning unit 200 shown in FIG. Here, the retracted position of the switching mirror 222 outside the optical path (the position of the broken line in FIG. 29) is not particularly limited by the movement of the keep solenoid 255, but the advance position of the switching mirror 222 into the optical path (FIG. 29). (The position indicated by the solid line in FIG. 2) restricts the swing of the switching mirror bracket 257 by the positioning pin 256, and the switching mirror 222
Regulate the stop position in the optical path of.

The switching mirror 222 is constructed so that the switched optical path can be adjusted. That is, as shown in FIG. 29, the optical path adjusting plate 259 is used for the scanning unit 20.
The lower part of the unit main body of No. 0 is rotatably supported by the lower fulcrum 262, and the spring 260 is provided in contact with both side parts between the upper fulcrum 258 and the lower fulcrum 262.
It is supported substantially vertically by the adjusting screw 261.

The optical path adjusting plate 259 is urged by a spring 260 so that it has a normal shape, and its upper fulcrum 258 rotates in a direction in which the switching mirror 222 is displaced.
The turning position of the optical path adjusting plate 259 due to this turning habit is determined by the head of the adjusting screw 261 arranged on the crocodile facing the spring 260 abutting on the side of the optical path adjusting plate 259. Therefore, this optical path adjusting plate 259
Rotates the adjusting screw 261 to lower the fulcrum 2
The position of the upper fulcrum 258 is varied around the axis 62, and the position of the switching mirror bracket 257 supported by the upper fulcrum 258 is displaced to change the position of the switching mirror 222.
It is possible to adjust the switched optical path by moving the position of.

In the optical system of the scanning unit 200, the mirrors other than the switching mirror 222 do not have the above-described optical path adjusting function, and the optical path for reading the original document on the platen glass 205 side is adjusted by the reading sensor 101. The position of the CCD is adjusted, and the optical path for reading the original on the contact glass 206 side is adjusted by adjusting the position of the switching mirror 222 by the above method. As a result, in the optical system, the number of adjustment points can be reduced, and the assemblability and maintainability can be improved. Further, in the optical system of this example, the keep solenoid 255, the connecting element thereof, and the like are housed in the scanning unit 200, and by removing the entire scanning unit 200 when exchanging the optical system element, its maintainability is improved. Is improving.

The above-mentioned optical path switching system may be configured as an optical system by a switching mirror rotation system as shown in FIG. In this example, the switching mirror bracket 264 supporting the switching mirror 222 is rotatably supported by the unit main body of the scanning unit 200 at a fulcrum 265. The solenoid 263 is arranged at the end of the switching mirror bracket 264 opposite to the side supporting the switching mirror 222. When the solenoid 263 is turned on / off, the switching mirror bracket is switched in the direction opposite to the solenoid 263. Spring 26 pulling 264
By the action of 6, the switching mirror bracket 264,
It swings about the fulcrum 265 as an axis between the position shown by the broken line and the position shown by the solid line in FIG.

As a result, the position of the switching mirror 222 is set to the original reading position shown by the broken line in FIG.
The sheet material document reading position indicated by the solid line is selectively moved. Here, when the optical path of the switching mirror 222 is switched to the optical path for reading the original through the platen glass 205, the switching mirror 222 is attached to the positioning pin 268, and the stop position of the switching mirror 222 is indicated by the broken line position in FIG. Regulate so that
Further, when switching the optical path of the switching mirror 222 to the optical path for reading the sheet original through the contact glass 206, the switching mirror 222 is abutted on the positioning pin 267, and the stop position of the switching mirror 222 is the solid line position in FIG. Regulate so that

Next, the turning operation of the scanner unit 30 will be described. FIG. 32 is an operation explanatory diagram of the page turning portion of the scanning unit 200. The turning belt 208 is made of PET, PC, PVC or the like, and its surface layer is a high resistance film having a surface resistance of 10 ¹⁴ Ω or more, and its back surface layer is a low resistance film having a surface resistance of 10 ⁸ Ω or less. It is composed of a resin film having a structure.

The turning belt drive roller 223 is
It consists of a metal roller that is grounded and the surface of which is coated with conductive rubber to ensure reliable belt drive and grounding. Further, the charging roller 225 is composed of a metal roller, and a high voltage of ± 2 kV is applied to the charging roller 225 from the AC power supply 253 at a predetermined timing via the changeover switch 253a.

In FIG. 32, while the scanning unit 200 is running and the turning belt 208 is being driven, the changeover switch 253a is turned on at a timing described later, and a high voltage of ± 2 kV is applied to the charging roller 225 from the AC power source 253. Then, an alternating electric field is generated on the surface of the turning belt 208, and by the action of this alternating electric field, the top page 2 of the original document BO contacting the surface of the turning belt 208.
An attraction force for attracting 54 is generated.

When the document reading operation is started,
As shown in FIG. 17, the scanning unit 200 at the left end home position of the scanner unit 30 starts traveling rightward in FIG. When the original reading position of the platen glass 205 of the scanning unit 200 reaches the left page of the main original BO, the optical system of the scanning unit 200 starts the reading operation of the main original BO as shown in FIG. The document surface of this book document BO is read from the left page to the right page.

The reading start position of the scanning unit 200 here varies depending on the size (size) of the original document BO, and also differs from the reading start position of the document on the contact glass 206 (reference end of the scale 207). In this way, the optical system of the scanning unit 200 makes the original document BO
34, the original scanning direction of the scanning unit 200 is reversed as shown in FIG. 34, and as shown in FIG. 35, the page-turning operation for the right page of the original document BO which has been read is completed. Is started.

When the page turning of this original document BO is started, a page turning belt 208 and a page feed roller 25 described later are provided.
0 is at the position indicated by the broken line in FIG. 32, and the charging pattern portion formed on the surface of the page-turning belt 208 precedes the page-turning operation and is the top page 25 of the original document BO.
Overlay on 4. Then, when the tip of the top page 254 crosses over the lower center of the turning belt 208, as shown in FIG. 35, the turning belt 208 and the page feed roller 250 are operated by a solenoid (not shown). , To the position shown by the solid line in FIG. As a result, only the uppermost page 254 of the original document BO is attracted onto the surface of the turning belt 208 by the attraction force due to the unequal electric field of the charge pattern formed on the surface of the turning belt 208, and the uppermost page 254 is absorbed. 254 end of belt 20
Lifted with 8. The attraction force due to the non-uniform electric field has a feature that pages other than the top page 254 are not attracted.

Here, the charging timing of the turning belt 208 is set so that the turning operation of the turning belt 208 is started together with the return operation of the scanning unit 200 which returns at the same time when the reading of the original surface of the original BO is completed. Therefore, the operation of the scanning unit 200 is efficient and efficient. However, as shown in FIG. 39, the distance L1 from the document reading position of the scanning unit 200 to the lowest point of the turning belt drive roller 223 is set from the contact point where the charging roller 225 contacts the turning belt 208 to the turning belt drive roller 223. When the distance is set to be larger than the distance L2 to the lowest point (L1 ≧ L2), the scanning unit 20
0 starts the return operation, and then the turning belt 20
It may be set to start charging to 8.

As described above, the top page 25 of the original document BO is
After turning up 4, the scanning unit 20 is kept in this state.
As shown in FIG. 35, when 0 is moved toward the end home position, the top page 25 of this original document BO is
As shown in FIG. 36, the sheet No. 4 is sandwiched between the page turning roller 224 and the page feed roller 250 and is reliably conveyed, and a pair of upper and lower page guides 22 arranged on the right side of the scanning unit 200.
7 and 228 (FIG. 24) to pass the scanning unit 2
The front end side is sent to the outer right side of 00. At this time, the page turning sensor 214 (FIG. 24) mounted on the page guide 227 on the upper side of the scanning unit 200 detects the original page sent to the outer right side of the scanning unit 200, and this original page is detected. Judge that the page has been turned over normally.

As is apparent from this, in this example, the original page turned up by the page turning operation of the scanning unit 200 is held in a natural posture without being rolled or bent, and therefore, this turning is performed. The scanning unit 200 can be miniaturized because it does not damage the raised document page and it is not necessary to dispose the page storing means for storing the flipped document page in the scanning unit 200.

Next, as shown in FIG. 37, the main document BO
When the uppermost page 254 of the above is turned up to the binding portion of the original document, the turning belt 208 and the page feed roller 250 are returned to their original positions (broken line positions in FIG. 32). In this state, when the scanning unit 200 is further moved toward the home position of the end portion thereof, as shown in FIG. 38, the turned-up original page is pulled by the binding section of the original and a pair of page guides are pulled. While returning between 227 and 228, the document is ejected from the scanning unit 200 so as to be superposed on the left page of the document BO.

In this way, when all of the flipped original pages are superposed on the left page of the main original BO, the scanning unit 200 completes one original reading / page turning operation for the spread original. Here, this book manuscript BO
As described above, when the document reading / page turning operation is repeatedly performed on the document, or only one of the document reading or page turning operation is repeatedly performed,
At the same time that the turned-up original pages are all superposed on the left page of the main document BO, the moving direction of the scanning unit 200 is reversed, and the reciprocating operation of the scanning unit 200 is performed in the shortest course with respect to the original surface of the original document. repeat.

Next, the structure of the scanning rail of the scanning unit 200 will be described. The scanning unit 200 is shown in FIG.
As shown in FIG. 2, the scanning optical system unit 336 in which the above-described optical system is arranged is provided on the front side and the rear side of the scanner unit 30 with respect to the pair of scanning side plates 337a and 337b. The support rod 344a and the one support rod 344b on the back side are rotatably supported. Accordingly, the scanning unit 200 follows the relative twist of the pair of scanning side plates 337a and 337b arranged on the front side and the back side thereof, and the scanning optical system unit 336 thereof.
Scan optical system unit 3 so that it is not twisted
36 is configured to learn only for the scanning side plate 337a arranged on the front side.

On the other hand, on the side plate of the scanner unit 30,
Two scanning rails 343a and 343b, which are parallel to each other, are disposed on the front side and the rear side of the scanning rail 343 with their left and right ends fixed. These scanning rails 343a and 343
b has a substantially L-shaped cross-section, and the roller brackets 338a and 338b surround the scanning rails 343a and 343b so as to surround the scanning rails 343a and 343b.
It is attached to each 337b.

These roller brackets 338a, 338
Positioning rollers 339a and 339b are provided in the position b so that the horizontal portions of the scanning rails 343a and 343b are sandwiched therebetween.
And pressing rollers 340a and 340b are rotatably arranged. Here, each positioning roller 339
Reference characters a and 339b have a function of determining the vertical position of the scanning unit 200 at the time of reading the original document and turning the pages, and two a and 339b are provided on each scanning side plate 337a and 337b. On the other hand, the presser rollers 340a and 340b are respectively attached to the scanning rails 343a and 34e.
The horizontal portion of 3b is configured to be pressed from above.

That is, these pressing rollers 340a, 340a
As shown in FIG. 41, 40b is rotatably supported on the free end of a pressing roller bracket 346 formed in a substantially bell crank shape. This press roller bracket 346
Is the center portion of each roller bracket 338a, 338
It is rotatably supported by a stud 347 fixed to b. Further, between the base end portion of the pressing roller bracket 346 and each roller bracket 338a, 338b,
A pressure spring 345 is stretched around. As a result, the pressing roller 340a, 34a
0b presses the horizontal portion of each scanning rail 343a, 343b from above.

By pressing the pressing rollers 340a and 340b against the horizontal portions of the scanning rails 343a and 343b, the scanning unit 200 and the scanner unit 30 are pressed.
Of the scanning unit 339a and 339b are brought into contact with the lower surfaces of the horizontal portions of the scanning rails 343a and 343b by the displacement habit of the scanning unit 339a and 339b. 200 is positioned.

The scanning unit 200 includes a lateral pressing roller 341 rotatably supported by a roller bracket 338a on the front side and the above pressing rollers 340a and 340b.
Roller bracket 338b on the back side with a pressure structure similar to
The horizontal pressing roller 342 for pressing the inside of the scanning rail 342 is arranged so that the horizontal portions of the scanning rails 343a and 343b are sandwiched from both outsides, respectively, so that the positioning in the depth direction is performed.

42 to 45, a page feed roller 250 is shown.
The configuration and action of The page feed roller 250 is shown in FIG.
And, as shown in FIG. 45, a plurality of rollers are fixed to the portion of the shaft 248 corresponding to the width of the turning belt 208 at predetermined intervals. The page feed roller 250 is made of a material such as soft resin such as foamed polyurethane or rubber.

On the other hand, the width of the turning roller 224 is larger than the width of the turning belt 208, as shown in FIG.
As shown in FIG. 3, both ends of the turning roller 224 extend outside the turning belt 208. A drive roller 249 having a diameter slightly smaller than the diameter of the page feed roller 250 is fixed to the shaft 248 so as to correspond to the extending portions at both ends of the turning roller 224. The drive roller 249 is a page feed roller 250.
It is made of a material such as rubber, which has a higher degree of hardness.

This page feed roller 250 fits in the recess of the lower page guide 228 whose tip is formed in the shape of a comb in the state of retracting to the position shown by the broken line in FIG. 32 (when viewed from the side). They are located so that they overlap each other).
When the turning belt 208 is raised to the position shown by the solid line in FIG. 32, this page feed roller 250 also moves to the position shown by the solid line in FIG. 32, and each drive roller 249 is extended to both ends of the turning roller 224. Abutting on each other, a part of the peripheral surface of the page feed roller 250 moves to a position where it is slightly pressed by the turning belt 208.

As a result, the page feed roller 250 is moved to the position shown in FIG.
As shown in FIG. 3, the page feed roller 250 is provided with a conveyance force for the document page which is deformed by the diameter difference from the driving roller 249 and turned up by the turning belt 208. The rotational force of the page feed roller 250 is given by the rotational force of the turning roller 224 being transmitted through the drive roller 249 that is in contact with the page feed roller 224. At this time, the driving roller 249 rotates at the same peripheral speed as the contacting roller 224, but the page feed roller 250 rotates at a large peripheral speed because the diameter thereof is larger than that of the driving roller 249. As a result, "the linear speed of the page feed roller≥the linear speed of the turning belt", and a reliable page conveying force for the turned-up original page can be obtained. On the other hand, as shown in FIG. 38, when the turned-up original page is discharged from the scanning unit 200, the page feed roller 250 and the turning belt 208 are retracted to the positions shown by the broken lines in FIG. 32, respectively.

Page feed roller 25 constructed as described above
The operation of 0 is controlled by the toggle joint device shown in FIGS. 44 and 45. The shaft 248 which is the rotation center of the page feed roller 250 has a toggle lever 274 formed in a bell crank shape as shown in FIGS. 44 and 45.
Is rotatably supported at one end of the. The toggle lever 274 is rotatably supported by the scanning unit 200 at a fulcrum 275. In addition, the scanning unit 200
An elastic spring 279 is stretched between the fixed pin 276 and the shaft 248 which are planted in the shaft, so that a straight line passing through the fixed pin 276 and the fulcrum 275 serves as a neutral line 278. Is configured.

As shown in FIG. 44, this toggle mechanism is in a state where the page feed roller 250 is retracted from the turning belt 208 to the position shown by the broken line in FIG. 32, and the turning roller 224 is shown by the solid line in FIG. When the ascending movement is started toward the position shown, the rotating shaft 224a of the turning roller 224 is
Engages with the other end of the toggle lever 274 and further rises while rotating the toggle lever 274. At this time, the shaft 2 is rotated by the rotation of the toggle lever 274.
The tension force of the spring 279 tries to return the page feed roller 250 to the original position until 48 exceeds the neutral line 278. However, when the shaft 248 crosses the neutral line 278, the tension force of the spring 279 increases. , And acts so as to bring the page feed roller 250 into contact with the turning roller 224. As a result, as shown in FIG.
In the state where it has finished rising to the position shown by the solid line,
By the tightening force of 9, the driving rollers 249 come into contact with the extending portions of both ends of the turning roller 224, and a part of the peripheral surface of the page feeding roller 250 is moved to a position where the turning belt 208 slightly pressurizes it. .

On the other hand, as shown in FIG. 38, when the turned-up original page is discharged from the scanning unit 200,
By the operation of retracting the turning roller 224 to the position shown by the broken line in FIG. 32, the turning roller 224 descends from the position shown in FIG. 45 while pushing the drive roller 249.
As a result, when the shaft 248 crosses the neutral line 278, the elastic force of the spring 279 acts in the direction of retracting the page feed roller 250 to the position shown by the broken line in FIG. 32, and the page feed roller 250 is shown in FIG. The turning roller 224 is returned to the original position by retracting to the position.

As described above, since the page feed roller 250 moves from its retracted position in the direction in which it comes in contact with the turning belt 208 in association with the upward drive of the turning belt 208, the drive mechanism of the page feeding roller 250 is changed. It can be constructed inexpensively and compactly. The movement of the page feed roller 250 is
After the flipping belt 208 starts to rise, it starts with a certain time lag (in the latter half of the raising of the flipping belt 208). Belt 20
Even when protruding from 8, this turning belt 208
The end portion of the original page can be securely sandwiched between the page feed roller 250 and the page feed roller 250, and the margin of the page turning operation of the scanning unit 200 is improved.

In this example, as described above, the scanning unit 2
Every time the scanning of 00 is performed, the regulation of the pressure original platen is released, and the pressure original platen is pressed against the scanning unit 200 with a spring property, and the upper and lower sides of the original document are arranged so that the top page of the original document becomes a uniform plane. The directional displacement is automatically corrected. Further, the movement of the end portion of the document in the left-right direction is corrected by changing the leading edge position, the trailing edge position, and the page turning position by repeating the page turning.

FIG. 46 shows the image forming section of this system.
The image forming unit includes a printer main body 701 including the laser printer, a sorter 702 as a peripheral device thereof, a reversing unit 703, a double-sided unit and a large-volume feed tray 70.
4 bank 705.

In the printer body 701, the photosensitive drum 706 is rotationally driven by the driving unit and uniformly charged by the charger, and then an image is written by the image exposure by the semiconductor laser 105 to form an electrostatic latent image. The electrostatic latent image is developed by the developing device to become a visible image. Further, the paper is fed from a selected one of the paper feed trays 707 and 708 and the large-volume paper feed tray 704, or the paper is manually fed from the manual feed table 709, and the fed paper is the transfer charger. The visible image on the photosensitive drum 706 is transferred to the upper surface by 710, separated from the photosensitive drum 706 by the separation charger 711, and then the visible image is fixed by the fixing device 712 and sent to the reversing unit 703. . In addition, the photosensitive drum 706
After the paper is separated, the cleaning device removes the residual toner.

In the reversing unit 703, in the normal mode, the paper from the fixing device 712 is stored in the upper paper discharge tray with the image surface facing upward. Further, in the sort mode, the paper from the fixing device 712 is discharged to the sorter 702 and sorted into each bin of the sorter 702. Further, in the double-sided copy mode, the paper on which the surface image is formed from the fixing device 712 is sent to the double-sided reversing unit 700 provided in the bank 705 in the vertical direction. The double-sided reversing unit 700 switches back the fed sheets and sends them to the double-sided tray 720 so that the image forming surface faces upward, and stacks them. The double-sided tray 720 re-feeds the stacked sheets, and the sheets are discharged as a double-sided copy to the sorter 702 or the sheet discharge tray by the reversing unit 703 after the image is transferred and fixed on the back side as described above.

In the reverse mode, the paper from the fixing device 712 is once sent to the double-sided reverse section 700. The double-sided reversing unit 700 switches back the fed paper,
This sheet is conveyed to the upper side and discharged with the image forming surface facing downward. At this time, the original document is read in the page order and the read images are formed on the paper, so that the discharged paper is kept in the page order.

This device is provided with the upper reading unit 200.
The present invention has a scanner section having a lower document and a lower manuscript table for pressing the spread book manuscript on the lower side. As shown in FIG. 47, the main document is set on the main document table in alignment with the left end of the binding portion and the front side reference. Then, fix the front cover of this manuscript to the fixing plate arranged on the left manuscript table, and fix the back cover to the fixing plate arranged on the right manuscript table.
The displacement of the top page due to the displacement of the shape of the binding portion during continuous reading of this document is prevented. The procedure for setting this document is as follows.

Open the drawer of the document table.

The left cover of the original is sandwiched by the fixing plate on the left original table with the left end of the binding portion and the front side reference.

The right front cover of this document is clamped by the fixing plate on the right document table.

The page where the reading of the original is started is opened, the open / close lock claw 33 is set, and the original table is raised to make the upper page of the spread flat.

The drawer of the document table is closed.

In this apparatus, since the double-page spread original is set on the front side of the center as shown in FIG. 47, the left edge, right edge, and upper edge of the page differ depending on the size of the double-page spread original. That is, the image leading edge position and the trailing edge position in the sub-scanning direction and the trailing edge position in the main scanning direction change.

As shown in FIG. 47, at the time of page-turning scanning after the image reading scanning of the main document, the black original plate outer frame portion outside the maximum main document size in the sub-scanning direction of the two-page spread original document extends from the end of the main document. The copy detection is started, the black original plate portion is read next, and the edge detection is performed on the two-page spread original. In the detection of the edge of the document by the document edge image detection circuit, the read data of the specific pixel in the sub-scanning direction is continuously sampled, and that data is compared with a certain threshold to determine the read image data. A position where a pixel larger than a threshold value is repeated several times is set as a page end position in the sub-scanning direction of the original document. The IPU 103 calculates a page suction and rising position for turning the page from the detected page edge position, scans the reading unit 200 to that position, and temporarily stops it.

Next, the IPU 103 calculates the page suction and rising position, scans the reading unit 200 to that position and temporarily stops it, and at this position, similarly, the main document end image detection circuit similarly scans the main document in the main scanning direction. Edge detection.

This apparatus uses a transmissive page sensor 415 for page detection as shown in FIG. The page sensor 415 is configured to include a light emitting diode 415a as a light emitting element on the upper page conveyance guide 416, and a photodiode 415b as a light receiving element under the lower page conveyance guide 417. Page transport guide 41 forming page transport path 418
6, 417 are provided with holes 416a, 417a, and the light emitting diode 415a and the photodiode 415b are arranged obliquely with respect to the vertical direction of the detection position of the page conveying unit. The page sensor 415 is a page conveyance guide 416, 417.
The page turning of the original document conveyed through the page is detected after separating one page. Further, the page sensor 415 is also used as a sensor for detecting a jam of unstored and undischarged pages when turning a page.

The scanning unit 200 shown in FIG. 14 scans to the left after reading the double-spread original document BO and turns the original document BO. The uppermost right page end of the original document BO is attracted to the turning belt 208, and the scanning unit 20
When the scanning of 0 is temporarily stopped, the page-turning belt 208 rises and the page-turning page is guided in the direction of the page conveying path. The scanning unit 200 is further scanned in the left direction, the page to be turned is stored in the page conveying path, and the leading edge of the page goes out of the scanning unit 200. The trail of turning pages rises and the folding belt 200
Is always almost constant and is determined by its mechanical layout. The page sensor 415 is arranged in the vicinity of the entrance of the page-turning section, which is a page-conveying path, and detects the page-turning page of the original document. The microcomputer in the IPU 103 detects the turning page storage start detection timing when the page sensor 415 detects the turning page, that is, the position of the scanning unit 200 at the turning page storage detection position of the turning page storage unit, so that the turning page is on the original document. The position of the right edge of the turning page when it meets is calculated.

When the scanning unit 200 is further scanned in the left direction after the turning pages are stored in the turning pages storage section, the two-page spread original document has the turning pages bound at the center binding section, so that the turning pages are bound at the binding section. While being pulled, it is ejected from the turning page conveyance path in a U-shaped path. The trail of ejecting the turning pages is also the turning page conveying path and the pressing roller 281a.
It is always almost constant along. The microcomputer in the IPU 103 detects the turning pages from the scanning unit 200 at the timing when the page sensor 415 detects the original page turning page discharge start detection of the turning page storage section, that is, the position of the scanning unit 200 at the turning page storage section main document turning page discharge start detection timing. The position of the right end portion on the upper left of the original document is calculated from the output signal of the page storage sensor 415.

The microcomputer in the IPU 103 has a start position address A and an end position address B of the calculated effective image range between the right end portion and the left end portion of the original document.
As a result, the center position becomes the binding portion of the double-page spread of the original document, so the center binding portion address C is calculated as follows. C = (A + B) / 2 Thus, the reference position for page allocation when copying the double-page spread original document image read at one time can be obtained. Further, since the image of the central binding portion of the two-page spread original document is likely to be shaded or distorted,
The microcomputer in U103 surely erases the image at that position. Further, the microcomputer in the IPU 103 performs the right page registration at the time of page independent output by using the calculated center binding portion address C.

The original document image standard will be described below.
FIG. 49 shows a part of the operation unit 99 of this device. Operation unit 99
Is an image reference designation key 602 for designating an image reference mode at the time of copying this document, and a light emitting diode 6 for displaying the state.
03,604 are provided. The image reference position includes the center of the sheet (transfer sheet), the left edge of the sheet (left alignment), and the right edge of the sheet (right alignment). When the image reference designation key 602 is pressed, the image reference mode sets the image reference position to the center, left edge of the transfer sheet. The light emitting diode 6
03 lights in the image reference mode in which the image reference position is left aligned, and the light emitting diode 604 lights in the image reference mode in which the image reference position is right aligned. The basic image reference mode in which the image reference position is the center of the paper is not displayed.

FIG. 51 shows the page image range of the read spread book original, and FIGS. 52 and 53 show the layout of the page images in each book original image reference mode. FIG. 51 shows an example in which the vicinity of the center of a main document having an A4 size cover and a main thickness of about 30 mm is opened. The page length in the plane direction from the page edge portion to the central binding portion of this document is reduced to about 200 mm. Generally, the pages of a two-page spread original document do not have a standard size even if the paper is of a standard size because the image is shrunk by the binding portion. The amount of image shrinkage varies depending on the thickness of the original document and the binding method thereof. Further, many of the originals have papers of a size other than the standard size. Further, there is a case where the original is out of the standard size by cutting the end portion after bookbinding.

FIGS. 52 (a) to 52 (c) show sheet images in the two-page spread original copy mode. The image reference positions in the two-page spread original copy mode are the left edge of the sheet, the center of the sheet, and the right edge of the sheet. When the image reference position is at the left end of the sheet as shown in FIG. 52 (a), the page end position in the scanning start direction of the two-page spread original document is detected as described above, and the microcomputer of the IPU 103 detects the left end position of the page. When the read address operation of the frame memory 104 is performed from the length information (transfer sheet length information from the transfer sheet size detection unit) of the transfer sheet fed by the laser printer, the left end portion of the original document becomes the transfer sheet. The images of both double-page spreads of this document are formed on one sheet of transfer paper in line with the leading end position in the transport direction, so that the images of both double-page spreads are left-justified on the transfer paper, and thus the conventional scale-based copying machine is used. Formed similarly.

When the image reference position is at the center of the paper as shown in FIG. 52B, both page end positions in the scanning start direction and the scanning end direction of the two-page spread original document are detected as described above, and the IP
The length information in the scanning direction of the two-page spread original document calculated from the detection position by the microcomputer U103 and the length information of the transfer sheet fed by the laser printer (transfer sheet length information from the transfer sheet size detecting means) To frame memory 1
By operating the read address 04, the two-page spread image of the original document is formed in the center of the transfer paper. Therefore, a uniform margin can be formed on the left and right of the transfer paper due to the shrinkage of the original.

When the image reference position is at the right end of the sheet as shown in FIG. 52 (c), the page end position of the two-page spread original in the scanning end direction is detected as described above, and the microcomputer of the IPU 103 detects it. By operating the read address of the frame memory 104 based on the page edge position and the length information of the transfer sheet fed by the laser printer (transfer sheet length information from the transfer sheet size detecting means). The right end detection position is aligned with the rear end position of the transfer paper in the transport direction, and both spread pages of the original are formed on one transfer paper. As a result, the images of both double-page spreads are formed right-justified on the transfer paper, a margin is formed on the left side of the transfer paper due to the contraction of the document, and a binding margin when the transfer paper after copying is left-binding is possible.

FIGS. 53A to 53D show sheet images in the independent page copy mode. The image reference positions in the independent page copy mode for copying the image of each page of the original document onto the transfer paper are the left end of the paper, the center of the paper, the right end of the paper, both ends of the page, and the center of the page. However, in this apparatus, the designation means at both ends of the page and the center of the page are not shown. When the image reference position is at the left edge of the sheet as shown in FIG. 53A, the page edge positions of the left and right pages of the two-page spread original document are detected as described above, the center binding position is calculated, and the IPU 103 is calculated. Of the frame memory 104 from the position of the page edge of the left page and the position of the central binding part.
By manipulating the read address of, the page end position of the left page in the scanning start direction of the two-page spread original is aligned with the leading end position of the first transfer sheet in the conveyance direction, and the center binding position is the conveyance of the second transfer sheet. Aligned with the leading end position in the direction, both spread pages of this document are formed on independent transfer sheets. Further, the images of the respective pages are formed on the respective transfer papers in the left-justified manner as in the conventional scale-based copying machine.

When the image reference position is the paper center reference as shown in FIG. 53 (b), the page edge positions of the left and right pages of the two-page spread original document are detected as described above, and the center binding position is The microcomputer of the IPU 103 calculates a frame memory from the page end position and the center binding position and the length information of the transfer paper fed by the laser printer (transfer paper length information from the transfer paper size detection means). By manipulating the read address of 104, the page end position and the center binding part position of the left page in the scanning start direction of the two-page spread original document are aligned with both end parts of the first transfer paper, and the center binding part position and the right page position are set. The end positions of the pages are aligned with both ends of the second transfer sheet, and both spread pages of the original are formed at the centers of the independent transfer sheets. Therefore, a uniform margin can be formed on the left and right sides of the transfer sheet due to the contraction of the document.

As shown in FIG. 53 (c), when the image reference position is the right end reference of the paper, the page end positions of the left page and the right page of the two-page spread original document are detected and the center binding position is set as described above. The microcomputer of the IPU 103 calculates the page end position and the center binding position of the right page, and the length information of the transfer sheet fed by the laser printer (transfer sheet length information from the transfer sheet size detecting means). By operating the read address of the frame memory 104, the center binding position of the double-page spread original in the scanning start direction is aligned with the rear end of the first transfer paper, and the page end position of the right page is transferred to the second transfer. The image of each page is formed right-justified on the transfer paper in alignment with the rear end position of the paper in the transport direction. As a result, a margin is formed on the left side of the transfer paper due to the contraction of the original, and a binding margin is created when the copied transfer paper is left-bound or bound.

As shown in FIG. 53 (d), when the image reference positions are at both ends of the page, copying is performed by switching the image reference positions on the left and right pages to the left edge and right edge of the paper by switching as in the above case. Both double-page spreads of the original document are formed on both end sides of the independent transfer paper, and a margin is formed on the central side of the transfer paper due to the contraction of the original document. When the image reference position is at the center of the page as shown in FIG. 53 (e), copying is performed by switching the image reference positions on the right and left sides of the sheet on the left and right pages as in the case described above, that is, The center binding portion position of the double-page spread original document is calculated as described above, and the microcomputer of the IPU 103 sets the center binding portion position of the double-page spread original document to the position of the first transfer paper according to the calculated central binding portion position of the double-page spread original document. The two-page spread images of the original document are formed on two independent transfer sheets in accordance with the rear end position in the transfer direction and the front end position in the transfer direction of the second transfer sheet. Therefore, both double-page spreads of the original document are formed on the center side of the independent transfer paper, and margins are formed on both end sides of the transfer paper due to the contraction of the document.

Next, the image range of the original document will be described. The reading sub-scanning direction range of the original document image and its arrangement method will be described with reference to the time charts of FIGS. 54 and 55. 54 and 55, the reading range and the image forming range in the sub-scanning direction are indicated by the number of scanning lines, and the image position thereof is indicated.

As described above, this apparatus reads both pages of a two-page spread original in one scan, stores the image data in the frame memory 104, then reads the image data from the frame memory 104, and the printer prints the image. Form. In this apparatus, the range in which the read image data in the sub-scanning direction is stored in the frame memory 104 (determined by SFGATE) is about 455 mm from the capacity of the frame memory 104 for the maximum allowable size A3 of this document of 420 mm, which is 7 mm.
There are 174 lines. Normally, since the page position of the two-page spread original document changes as described above, the range for accumulating the read image data in the sub-scanning direction of the apparatus in the frame memory 104 starts from the left end of the left original platen of the maximum size of the original document.

In the double-page spread copy mode of FIG. 54, the effective image range (determined by VFGATE) of the double-page spread of the cover size A4 is compared with the read image data storage range of the frame memory 104 according to the edge detection result of the double-page spread original. The positional relationship is as shown in the figure. The microcomputer in the IPU 103 spreads the VFGATE and, based on the detection result of the edge of the original document, shrinks the binding portion of the original document to A.
It is calculated as 6400 lines for 6614 lines of 3 sizes. PFGATE 1, 2 and 3 are examples of PFGATE indicating the effective image range of the transfer paper when the image data within the calculated effective range is read from the frame memory 104 and recorded on the transfer paper of A3 standard size by the printer.
The microcomputer in the IPU 103 is each PFGA
The TE range is determined by the size of the transfer paper fed by the printer, and is 6614 lines for A3 size. The printer uses the rising edge of PFGATE as a trigger to turn on the registration clutch of the paper feed, and sends the transfer paper from the paper feeding device by the registration rollers to form an image so that the leading edge of the image at the rising edge of PFGATE and the leading edge of the transfer paper are aligned. . The microcomputer in the IPU 103 is a VF
FH of white data is transmitted to the printer with each image data outside the GATE range as a margin.

PFGATE1 is PFGATE in the mode in which the image reference position is the left end of the sheet, and IPU10
The microcomputer in 3 is a frame memory 104
From the printer to the printer so that the left end of the page of the original document is aligned with the front end of the transfer paper and a margin is formed at the rear end of the transfer paper. As the image layout in this case, the microcomputer in the IPU 103 determines that the page range (VFGATE) is 640 from the value of the counter that counts the number of image lines.
The image data after the end of 0 line is white.

PFGATE2 is a mode in which the image reference is the center of the sheet, and the microcomputer in the IPU 103 transfers the image data from the frame memory 104 to the printer so that the center of the page is aligned with the center of the transfer sheet and the front and rear edges of the transfer sheet are transferred. Send so that a uniform margin is created. In this case, as the image layout, the microcomputer in the IPU 103 calculates the difference 214 between the page range (VFGATE) 6400 lines and the transfer paper image range (PFGATE2) 6614 lines from the value of the counter that counts the number of image lines. VFGATE for half of the lines, 107 lines
It is provided as a blank area in front of the
A blank space is provided from the end point of line 0, and PFGATE2 ends at line 6614.

PFGATE3 is PFGATE in the mode in which the image reference is the right end of the paper, and the microcomputer in the IPU 103 transfers the image data from the frame memory 104 to the printer so that the left end of the page is aligned with the rear end of the transfer paper. Send so that a margin is created at the tip of. As for the image layout, the microcomputer in the IPU 103 calculates a difference 51 between the page range (VFGATE) of 6400 lines and the transfer paper image range (PFGATE2) of 6614 lines from the value of the counter that counts the number of image lines.
Four lines are provided in front of VFGATE as a blank area.

FIG. 55 shows the image range in the independent page copy mode. As in the case of FIG. 54, the effective image range (VFGATE) of the spread page of the cover size A4 has a positional relationship as shown in the drawing with respect to the read image data storage range of the frame memory 104, depending on the edge detection result. The microcomputer in the IPU 103 is based on the edge detection result of the spread book document.
FGATE is calculated to be 6400 lines due to the contraction of the binding portion of this document, half of the page is 3200 lines, and the center binding portion position is calculated to be the middle of the VFGATE range.

Further, in the mode in which the image reference is the left end of the paper, the microcomputer in the IPU 103 arranges the spread left page image in the transfer paper image range {PFGATE1 (L)} of A4 size 3307 lines and sets the frame. The image data is sent from the memory 104 to the printer so that the left end portion of the left page is aligned with the front end of the transfer paper and a margin is formed at the rear end of the transfer paper. The image layout in this case is IPU
The microcomputer in 103 determines the page range (VFGATE) from the value of the counter that counts the number of image lines.
The image data after the end of 3200 lines, which is half of the above, is white. Further, the microcomputer in the IPU 103 is
The double-page spread right page image is arranged in the transfer paper image range {PFGATE1 (R)} of A4 size 3307 lines, and the image data is transferred from the frame memory 104 to the printer so that the binding position is aligned with the leading end of the second transfer paper. Send to the trailing edge as well to create a margin.

In the mode in which the image reference is the center of the paper, the microcomputer in the IPU 103 arranges the spread page images in the transfer paper image range {PFGATE2 (L), PFGATE2 (R)} of A4 size 3307 lines. Then, the image data is sent from the frame memory 104 to the printer so that the center of the page is aligned with the center of the transfer sheet and uniform margins are formed at the front and rear edges of the transfer sheet. As the image arrangement in this case, the microcomputer in the IPU 103 determines that the number of image lines is 3200 lines which is half of the page range (VFGATE) and 3307 lines of the transfer sheet image range (PFGATE2) from the value of the counter. 53 lines, which is half of the 107 lines of difference, are provided as a blank part before the page image, and the image data is sent from the frame memory 104 to the printer so that the PFGATE2 ends at 3307 lines with a blank part provided from the end point of 3200 lines.

In the mode in which the image reference is the right edge of the paper, the microcomputer in the IPU 103 arranges the spread left-page image in the transfer paper image range {PFGATE3 (L)} of A4 size 3307 lines and sets the frame memory 1
The image data is sent from 04 to the printer so that the page binding portion is aligned with the rear end of the transfer paper and a margin is formed at the front end of the transfer paper. In this case, as the image arrangement, the microcomputer in the IPU 103 uses the value of the counter that counts the number of image lines to determine 3200 lines of the page range (VFGATE) and 3 of the image range {PFGATE3 (L)} of the transfer paper.
A 107-line difference from the 307-line is provided as a margin before the VFGATE, and thereafter the image data on the left page of the VFGATE is read. Also, the microcomputer in the IPU 103 displays the spread right page image in A4 size 330.
Arranged in the 7-line transfer paper image range {PFGATE3 (R)}, the image data from the frame memory 104 to the printer is aligned with the right page end position at the rear end of the second transfer paper and the same as the front end of the transfer paper. Send so that margins are created.

As described above, the microcomputer in the IPU 103 controls the writing position of the transfer paper by the read address operation of the frame memory 104 in which the image data is once stored. Further, in all copy modes, the printer counts the timer triggered by the rising edge of each PFGATE, turns on the paper feed registration clutch, and forms an image by aligning the leading edge of the PFGATE signal with the leading edge of the transfer sheet. .

56 to 59 show the copy operation timing in the main document mode of the present system. FIG. 56 shows the operation unit 99.
FIG. 57 to FIG. 59 show the case where the edge of the main document is detected by the image in the initial mode after the print key is pressed. Shows the case of implementation. 57 to 59
In this case, the first original document reading operation and the image edge detection operation are the same as those in FIG.

In FIGS. 56 to 59, the numerals indicate the read page numbers of the original document, and pages 2 and 3 and pages 4 and 5 form the double-page spreads of the original document. Reference numerals RP and LP of the read signal memory R of the frame memory 104 represent the right page (RP) and the left page (LP) of the read image data, respectively. Further, the page size of the main document in each mode is A4 size, two spread pages of the main document are continuously read by one scanning of the scanning unit 200, and the read image data is stored in the frame memory 104 for A3 size. The image data is stored as read data, image data is read from the frame memory 104 according to each output mode, an image is formed by the laser printer 501, and recorded on a transfer sheet.

56 and 57, the image of the book document in the spread state is output on an A3 size transfer sheet, and the image of the book document is set to 1
FIG. 5 shows the case of the 1 to 1 copy mode in which a copy is made.
Reference numeral 8 shows the case of the 1 to 1 copy mode in which the images on the left and right pages of the original document are separately output for each independent page on the A4 size transfer paper, and one copy is made on the original document. FIG. 59 shows a case of a two-sheet copy mode in which an image of an independent page is output as in the case of FIG. 58, and the number of copies set is two, and two copies are made on the original document.

When the print key for instructing the start of copying on the operation panel 99 is turned on at the operation timing of the original mode in FIG. 56, the microcomputer in the IPU 103 reverses the scanner motor 106 for scanning the scanning unit 200. The scanning unit 200 located at the center is moved in the reading start direction. When the scanning unit 200 moves to the reading start position of the left home position, the microcomputer in the IPU 103 drives the scanner motor 106 in the normal rotation direction to turn on both the fluorescent lamps 201 and 202 and perform scanning for reading the original. Let it start.

The microcomputer in the IPU 103 processes the read image data as an original image from the end point of the left page of the two-page spread original, and generates an effective image area signal SFGATE in the reading sub-scanning direction with respect to the original image. Further, the microcomputer in the IPU 103 operates the data write signal memory W of the frame memory 104 by the effective image area signal SFGATE to control the data write range. The microcomputer in the IPU 103 recognizes the center point of the binding portion of the double-page spread original from the control address of the scanner motor 106, and reads this at the reference position of the second image in the independent page output mode or the read image in the double page output mode. It is used when, for example, forming on the center of the transfer paper.

The microcomputer in the IPU 103 starts the detection of the right page edge of the original document when the carriage 200 reaches the right page edge of the two-page spread original document, and calculates the page suction position when turning the page. When the scanning scan of the cache 200 is completed, the cache 200 enters the backward page-turning scan, and the storage position of the page-turning page is detected for the first time, and the image effective range is determined by the page storage position, and then the laser printer forms an image. To start. In addition, after the second time, the laser printer starts image formation immediately after the end of scanning in the image effective range calculated by the previously detected page storage position. The microcomputer in the IPU 103 uses the effective image area signal PFGATE in the sub-scanning direction on the laser printer side.
The data read signal memory R of the frame memory 104 is operated to output image data in synchronization with the laser printer. Further, at the time of turning a page, the page sensor repeatedly detects the page edge of the two-page spread original. By repeating the above steps, the pages of the manuscript are automatically turned to make double-page spreads of the manuscript.

FIG. 58 shows the case of the 1TO1 copy mode in which an image is output for each independent page of this document. In this case, in the reading mode, the operation is performed at the same timing as in the case of FIG. 57, and at the time of page turning, the data read signal memory R of the frame memory 104 is operated by two PFGATEs according to the transfer paper continuously conveyed by the printer. Is
Image data for each page of the original document is output. When the address counter of the frame memory 104 is masked by PFGATE and stopped, the data of the second image on the right page connected to the image on the left page of the original document becomes the second PFGAT.
The E signal is read with a transfer paper interval in the laser printer.

FIG. 59 shows the case of a mode in which two independent pages of this document are copied as in the case of FIG. In this case, in the reading mode, the operation is performed at the same timing as that in the case of FIG. 57, and in the image output at the time of page turning, a plurality of PFGs are provided according to the transfer paper continuously conveyed by the laser printer.
The data read signal memory R of the frame memory 104 is operated by the ATE, and a plurality of image data of each page of the original document is output. In this example, first, two images of the read left page are output, and then two images of the read right page are continuously output. While the laser printer is outputting a plurality of images, the TPS finishes page turning scanning, the carriage 200 stops at the reading scanning start position, and stands by for the next reading scanning.

This system performs a stable page-turning operation for the suction and separation of the pages of the original document by the displacement of the suction roller. This is because the suction position is important because only the leading edge of the page is sucked and displaced upward and guided to the page storage section.
As described above, the page sensor detects the page edge of the document during page-turning scanning of the document, and the suction and separation operation positions with respect to the page-edge of the document that change due to repeated page-turning are determined. That is, the page end portion on the scanning end side is detected from the page storage position data to determine the ascending position of the suction roller at the time of page turning scanning, and the same amount of pages is always sucked and separated. Next, selection of the double-sided copy mode will be described. FIG. 60 shows a part of the operation unit 99. Operation unit 99
Includes a read selection key 601 for selectively setting a sheet original reading mode in which a sheet original on the contact glass 206 is read and copied, and a main original reading mode in which a main original on the original table 1 is read and copied. Is provided, and the sheet original reading mode and the main original reading mode are alternately set every time the reading selection key 601 is pressed.

Further, as shown in FIG. 49, a double-sided designation key 602 for designating a double-sided copy mode at the time of copying the original document and light-emitting diodes 603, 604 for displaying the designated mode are provided in the operation section 99. 605 is provided. The double-sided copy mode includes (1) original double-sided copy mode, (2) double-page spread double-sided copy mode, and (3) automatic double-sided copy mode. Each time the double-sided selection key 602 is pressed, the original double-sided copy mode, double-page spread double-sided copy mode. The automatic double-sided copy mode is sequentially and repeatedly switched and designated, and the light emitting diodes 603, 604, and 605 for displaying the designated mode are sequentially turned on.

At the time of default such as power-on, mode clear, main document reading mode selection, etc., the main control board 107 releases all the double-sided modes and selects the single-sided copying mode. The main control board 107 enables the original double-sided copy mode, double-page spread double-sided copy mode, and automatic double-sided copy mode in the independent page mode for independently copying the image of each page of the original document. In the double-page spread mode for copying a double-sided spread page, only the selection of the original double-sided copy mode is enabled, and double-sided spread page copying is performed in which an image is formed on the front and back sides of the sheet for every two-page spread of this document.
Further, the main control plate 107 enables only one double-sided mode in the sheet original reading mode, and when the original double-sided copying mode is selected, each original is replaced and the front and back sides of the original are pressed each time the print key is pressed. The double-sided copying in which each image is sequentially copied is repeated.

The operation section 99 is composed of the operation section shown in FIG. 49 and an operation panel and display panel (not shown). The operation panel is a print key other than the operation unit shown in FIG.
Operation keys such as the 0 key are provided, and the display panel has a display section for performing various displays. 49, 50, 60
Indicates a main part of the operation unit 99, which mainly sets and displays the copy mode of the main document. As shown in FIG. 49, the operation unit 99 includes a key 606 for selectively setting the sort mode and the stack mode of the sorter 702, and light emitting diodes 607, 6 for displaying the setting mode.
08 is provided, and each time the key 606 is pressed, the sort mode and the stack mode are set alternately. In addition, the operation unit 9
Reference numeral 9 has an image reference key 609 for setting the image reference to either left or right, and light emitting diodes 610 and 611 for displaying the set image reference, and the image reference key 609 is depressed. Each time, the image reference is set to left alignment and right alignment alternately.

The operation section 99 also has a key 612 for setting a center erasing mode for erasing an image of a binding portion designated width with reference to the central portion of a two-page spread original, and a light emitting diode 613 for displaying the setting state. , A key 614 for setting each erasing mode for erasing the image of the specified outer frame width based on the original document, a light emitting diode 615 for displaying the setting state, and the transfer paper with its image side facing up. A key 616 for setting the front surface discharge mode and a light emitting diode 617 for displaying the setting state are provided.

The operation unit 99 also has a copy format selection key 618 for selectively setting the independent page mode and the spread page mode, and light emitting diodes 619, 620 for displaying the setting mode. Selection key 61
Each time 8 is pressed, the independent page mode and the spread page mode are set alternately. Further, the operation unit 99 is a page limiting key 621 for selectively setting a right page limited mode for copying only the double-page spread right page and a left page limited mode for copying only the double-page spread left page, and a selection state thereof. The light emitting diodes 622 and 623 for displaying are displayed, and the right page limited mode and the left page limited mode are alternately set each time the page limited key 621 is pressed.

The operation section 99 also has a key 624 for increasing / decreasing the zoom magnification, a key 625 for independently setting the magnification, and a page number setting key 6 for setting the number of copied pages.
26, copy start page setting keys 628 and 629 for setting the copy start page of the two-page spread original to the left page and the right page, respectively.
Have. Further, the operation unit 99, as shown in FIG. 50, keys 630 to 633 for setting the center erase width, the upper erase width, the lower erase width, and the left and right erase width of the original document, respectively.
Keys 634 to 636 for setting whether to set the image reference shift amount by the left reference, the right reference, or the whole image, and the erasing width of this document and the image reference shift amount are set by the ten key and the enter key. To be done.

Next, the guidance display will be described.
The operation guide and the warning of this device are displayed on a liquid crystal panel which is arranged in the operation unit 99 and which can display characters of two columns of 20 digits, and FIG. 61 shows the guidance display.
FIG. 61 (A) shows a general display during the copying of the main document by the guidance display section of the liquid crystal panel. The display content is the reading of the main document, the copy magnification is the same size, and pages 15 to 48 on the right page of the spread. The settings up to indicate that copying is being performed on page 24. The guidance display section displays the reading selection on the upper left, the copy magnification on the upper right, the set number of pages on the lower left, and the number of pages being copied on the lower right.

FIG. 61B shows a general display during the copying of the sheet original on the guidance display section, and the display content indicates that the sheet original is read and the copy is the same size. FIG. 61C shows an example of the guidance display on the guidance display section, and the display content is a warning display of the document placement when the sheet document reading mode is switched. This is the case when it is detected that the original document is on the original tray (on the original table 1) when the sheet original reading mode is designated by pressing the read key 601 while waiting in the original original reading mode or after copying is completed. It is a display. This prompts removal of the original document, protects the original document, enables homing of the carriage by switching the reading mode, and does not obstruct reading scanning of the sheet original document.

FIG. 61D is a page number setting display of the guidance display section, which displays from the selection of the original document reading mode to the page number setting. This page number setting is indispensable for automatic reading of the original document, and the input selection is preferentially displayed. After that, by pressing the page number setting key 626 or the page number key, the guidance display unit shifts to the next page number input display. In the start-to-end page input mode, the guidance display section has the numerical value section blinking while the page number setting key 626 is pressed, and the numerical value of the copy start page is entered with the 10 key and the enter key or page number setting key 626 is pressed. When the button is pressed, the copy start page is confirmed. After that, the guidance display unit shifts to the next guidance, and when the numeric value of the copy end page is input with the 10 key and the enter key or the page number setting key 626 is pressed, the copy end page is confirmed.

In the page number input mode in which the total number of pages to be copied of the original is input, the guidance display section performs the display shown in the figure from pressing the page number key to confirming the input of the page number.
When the user inputs the numerical value of the total number of pages to be copied of this document with the key and presses the enter key or the page number key, the total number of pages is determined. After inputting the number of pages as described above, the guidance display unit performs the start page selection display shown in FIG. 61 (E). This is for inputting and designating one of the two-page spreads of the original document as the copy start page, and by pressing one of the copy start page setting keys 628 and 629, one of the two-page spreads of the original document as the copy start page. When is selected, the guidance display section becomes the standby mode display. In the page-only mode, the copy page of this document is limited to either the left or right page, so the copy start page input mode is not entered and the page is not displayed.

Next, the mode control flow will be described. 62 to 67 show control flows in each mode. These controls are performed by the main controller (main controller) that controls the image forming mode, and the IPU controller (controller of the IPU 103) is instructed by the main controller.
Controls the reading of original images, data processing, and page turning. The sequence controller (sequence control unit) also controls the timing of the load on the image forming unit. Figure 6
2 is a page-only mode selection flow, FIG. 63 is a start left and right page setting flow, FIG. 64 is a copy page number setting flow, FIG. 65 is a final page left / right discrimination flow, FIG. 66 is a copy format selection flow,
FIG. 67 shows a reading selection flow.

First, the setting of the copy page number will be described with reference to the copy page number setting flow shown in FIG. As shown in FIG. 49, the operation unit of this apparatus has a page number setting key 626 for setting the number of copied pages, a copy start page setting key 628, 62.
9, the copy page number setting flow shown in FIG. 64 shows the control. There are the following two methods for setting the number of pages to be copied, which is selected by pressing each key. In the first start-end page input method, two numerical values of a copy start page and a copy end page of this document are input, the main controller calculates the number of pages from the copy start page to the copy end page, and the difference between them is calculated. Make a copy of the page. The second method of inputting the number of pages is a method of directly inputting the number of pages to be copied, and copying is repeated from the specified left page or right page for the specified number of pages. The latter is mainly used when this manuscript has no page number or when the pages to be copied are skipped.

The page number input operation method is performed as described above with the guidance display shown in FIG. Further, the input of the number of pages is indispensable for the repeated operation of the automatic page-turning operation for reading the original document, and the guidance display section firstly displays the guidance so that it is preferentially set in the original document reading mode.

That is, in the main document reading mode, the main controller displays a page number input request on the guidance display section, and the page number setting key 626 is operated by an input signal from the page number setting key (start / end page key) 626. When turned on, the guidance display unit is caused to display a request for inputting the copy start page and copy end page of this document. Then, the main controller checks the input signals from the 10 key, the enter key, and the page number setting key 626 to confirm the copy start page input by the 10 key by turning on the enter key or the page number setting key 626, and The copy end page input by the 10 key is used for enter key or page number setting key 626.
Confirm by turning on.

When the page number setting key 626 is not turned on in response to the display of the page number input request, the main controller checks the input signal from the page number key, and if the page number key is turned on, the main controller The guidance display unit is caused to perform a display requesting input of the copy start page and copy end page of the document.
Then, the main controller checks the input signals from the 10 key, the enter key, and the page number setting key 626 to determine the number of copied pages input by the 10 key by turning on the enter key or the page number setting key 626.

Next, the page limiting mode will be described. The page-only mode is effective in the original document reading mode.
2 shows a page limited mode selection flow. The page limited mode is (1) no page limited mode, (2) right page limited mode,
(3) There is a left page limited mode, and priority is given to the page limited mode so that the first setting is (2) right page limited mode and the second setting is (3) left page limited mode. The main controller sets the page limit key counter to 1 when the power is turned on, increments the page limit key counter each time the page limit setting key 621 is pressed, and when the page limit key counter becomes greater than 4, the page limit key counter is increased. Set 1 to the counter. Then, the main controller sets the mode without page limitation when the page limited key counter is 1 to turn off the light emitting diodes 622 and 623, and sets the right page limited mode when the page limited key counter is 2. Then, only the light emitting diode 622 is turned on, and when the page limited key counter is 3, the left page limited mode is set and the light emitting diode 62 is set.
Turn on only 3.

In the right-page limited mode, the main controller forms the read image of only the right page of the two-page spread original on the transfer paper, turns over the pages of the main document, and further displays the image of only the right page of both the two-page spread. Form on transfer paper. This image formation is performed by reading only the image information of one page in the independent page mode from the frame memory 104 as shown in FIG. As for the image alignment, as described above, the page image position is calculated from the detection of the page edge of the original document, and the page image position is arranged on the transfer sheet. On the contrary, in the left page limited mode, the main controller forms the read image of only the left page of the two-page spread original on the transfer paper,
The pages are turned to further form an image of only the left page of the two-page spreads of the original on the transfer paper.

Some books are bound with one-sided prints, and many are bound with one-sided originals such as stapler stoppers and files which are commonly used in offices. In bindings of those single-sided printed matter, the number of pages is generally numbered only on the image side, and even when the number of pages is not added, the number of originals is counted to count the number of pages. It is a thing. In this apparatus, when an image is formed only on the page (left page or right page) set in the page-only mode, the copy page of this document is set as the copy start page / copy end page, or the copy page. By setting the number of pages, the number of pages to be copied, that is, the number of originals is set.

The main controller receives the input signal from the operation section in the mode for forming the images of both facing pages of the original document, and counts the number of pages for each page of the original document.
In the mode for forming an image of only the set side page (left page or right page) in the page-only mode, the input signal from the operation unit is received and the number of pages is counted every two pages of the original document. Therefore, the number of pages can be set easily in both modes,
Reading of the number of pages, turning of pages and image formation are surely performed.

Normally, the copy start page (left page or right page) of the original document is selected to start copying. However, when the page limited mode in which only one page is copied after that, the main controller operates Cancel the selection result of the copy start page.
If the copy start page is subsequently input differently from the designated page in the page-only mode, the main controller causes the main controller to operate as shown in FIG.
As shown in the start right and left page setting flow, the selection result of the copy start page is canceled and the page limited mode is given priority. When the limited mode is designated, it is not necessary to select the copy start page, and the guidance display prompting the selection input is not displayed.

Next, the selection of the copy start page will be described. The copy start page of this manuscript is (1) of the spread pages of this manuscript.
There are left page and (2) right page. Also, the main controller opens the copy start page of this document when the copy start page set key 628 is pressed by an input signal from the copy start page set keys 628 and 629 as shown in the start left / right page set flow of FIG. It is set to the left page of both pages, and when the copy start page setting key 629 is pressed, the copy start page of this document is set to the right page of both pages.

When the right page is designated in the copy start page mode, the main controller forms the read image from the right page of the two-page spread original on the transfer paper, and turns the page to form an image for each page. In this image formation, as shown in FIG. 53, the image information is divided into pages by the frame memory 10 in the independent page mode.
Read from 4 and perform. As for the image alignment, the page image position is calculated from the page edge detection as described above, and the image is placed on the transfer paper. On the contrary, when the left page is designated in the copy start page mode, the read image is formed on the transfer paper from the left page of the two-page spread original document, and the page is turned to further form an image for each page.

Further, in the double-page spread mode shown in FIG. 52, in which both double-page spreads of the original are copied onto one sheet of transfer paper, the copy start page is input. This is determined by the copy start page and the previously specified number of copy pages as shown in the final page right / left discrimination flow of FIG.
It is used to determine whether the final page to be copied is a double-page spread right page or left page, and to determine a method for forming an image of the final page. Further, as shown in the final page right / left discrimination flow of FIG. 65, the main controller calculates the number of times of scanning and turning of the original document based on the copy start page and the set number of copy pages. In this case, the main controller divides the set number of copied pages by 2 for the number of scans and sets the integer part to the number of scans, but when the copy start page is the left page and the set number of copy pages is an even number, the final copy is made. If the page is the right page and there are three other pages, the value obtained by adding 1 to the value of the integer part is taken as the number of scans. Since the apparatus completes the page-turning scanning after the final reading-scanning of the original document, the number of times of reading and page-turning scanning becomes equal. When the copy start page is the right page and the set number of copy pages is odd, the last copy page is the right page, and in the other two cases, the last copy page is the left page. As described above, the number of reading scans differs depending on the page layout of the original document and is also used for the control thereof.

When the copy start page is selected, image formation is started from the copy start page in the independent page mode, and unnecessary pages are not copied. Further, even in the two-page spread mode, it is possible to control so as to erase the image of the page other than the copy start page or not form the image. This is because, for example, when the right page is selected as the copy start page in the double-page spread mode, the image of the first left-page spread page is converted into white data for image formation. Also, as described above, when the final copied page is the spread left page, the image of the final spread right page is converted into white data and imaged in the same manner.

Next, the copy format mode will be described. The copy format mode is effective in the original document reading mode and includes (1) independent page mode and (2) spread page mode. In this apparatus, a priority order is set for the copy format mode, and the first setting is to set 1 page of the original document on 1 page of the transfer paper, which is a frequently used (1) independent page mode, and is set with the highest priority. Also, when the power is turned on or the original document reading mode is selected, the initial setting of the copy format mode is (1)
Independent page mode.

As shown in the copy format selection flow of FIG. 66, the main controller sets 1 to the copy format counter at power-on, increments the copy format counter each time the copy format selection key 618 is pressed, and copies the copy format counter. When is greater than 3, the copy format counter is set to 1. Then, when the copy format counter is 1, the main controller sets the independent page mode to light only the light emitting diode 619, and when the copy format counter is 2, sets the spread page mode to the light emitting diode 620 only. Light up.

When the independent page mode is designated, the main controller reads the read page image of the two-page spread original document from the frame memory 104 for each page as shown in FIG.
Form on the page transfer paper. As for the image alignment, the page image position is calculated from the page edge detection as described above, and the image is placed on the transfer paper. On the other hand, when the spread page mode is designated, the main controller continuously reads the read image information of both pages of the spread book document from the frame memory 104 to form one page of transfer paper.

Generally, books and books are bound with double-sided printed matter, and there are also bound with double-sided originals such as stapler stoppers for office documents and files. In this device, which reads the original document and forms an image of the read page on the transfer paper, and turns the pages of the original document, in this device, an independent page mode in which an image for each page of the original document is formed on one sheet of paper, and a two-page spread of the original document By providing the double-page spread mode in which the images of both pages are formed on one page of paper, it is possible to obtain a copy having a different image forming form. In particular, the independent page mode has the same page structure as the original document. In the double-page spread mode, the number of copies is halved, and images such as gravure are spread over the double-page spread as continuous images.

Further, the present apparatus reads both page images of a two-page spread original document in one scan, writes the read image data in the frame memory 104, divides the read image data into an image range for each page, and divides the image memory into frame memories. The read image data is read out from the page 104 to form an image on one page of the sheet, and the read image data is continuously read from both sides of the page from the frame memory 104 to form the images of both pages of the page of the original document on one page of the sheet. The reading is controlled to be the same in one unidirectional scan.

Next, reading selection will be described. This apparatus has an automatic page-turning mechanism for reading originals and a sheet original reading function. In this apparatus, the reading selection mode is given priority, and the first setting is the original document reading mode, and the default setting when the power is turned on or when the mode is cleared is the original document reading mode. Further, this initial setting mode can be set programmable in the image forming unit and can be stored in a non-volatile memory accessible by the CPU of the main control board 107, and either document reading mode can be selected according to the application. It is like this. In addition, by performing a preliminary operation to start reading the original when switching the original reading mode selection, when the original reading mode is selected, the carriage waits in a state where the original can be set by homing the carriage and moving the original table.
Further, the time for starting the reading operation (time for homing of the carriage, switching of mirrors and fluorescent lamps and preheating, movement of the document table) is shortened.

As shown in the read selection flow of FIG. 67, the main controller causes the read selection counter to set the initial setting value 1 or 2 in the nonvolatile memory when the power is turned on.
After waiting for warm-up, the input signals from the reading selection key 601 and the detection means for detecting the presence or absence of the original document on the document table 1 are checked, and when the reading selection key 601 is pressed, the document table 1 is pressed. If there is this original document and if there is this original document, prohibit the switching of the reading mode by the reading selection key 601 and make the display panel display the warning message "Original document is left" This prevents the main document from obstructing the scanning of the carriage and the main document from being damaged when the sheet document is read. Further, since the original document cannot be seen when it is set on the original table 1, the operator is informed that the original document has been forgotten to be taken.

In this case, the main controller increments the reading selection counter each time the reading selection key 601 is pressed, and sets 1 to the reading selection counter when the reading selection counter becomes larger than three.
Then, when the reading selection counter is 1, the main controller sets the original document reading mode to turn off the contact glass reading (sheet original reading) light emitting diode, homing the carriage, retracting the optical path of the central mirror 222, The fluorescent lamps 201 and 202 are turned on to receive the original document set. When the reading selection counter is 2, the main controller sets the sheet original reading mode to light the contact glass reading light emitting diode, homing the carriage, advancing the optical path of the central mirror 222, and fluorescent lamps 203, 20.
4 is turned on to accept the original document set.

Next, the copy mode and function will be described. The copy mode, input keys and their functions of this apparatus will be described below with reference to FIGS. 49, 50 and 60. 1. Common copy mode key (key commonly used in each copy mode of operation unit 99) (1) Sort / stack key 606 (2) Paper selection key (3) Copy density adjustment key (4) Automatic Concentration setting key (5) Numeric keypad (6) Mode clear / Preheat key (7) Decimal key (8) Clear / Stop key (9) Enter number confirmation / Enter key (10) Interrupt key (11) Start key (print Key) 2. Semi-common copy mode key (1) Independent scaling key Independent scaling range is 71% to 1 in both main and sub scanning directions.
Key 625 that sets 1% pitch in the range of 41% (2) Zoom key Key 624 that sets the zoom range in 1% pitch in the range of 71% to 141% (3) Reduction / Enlargement / Fixed magnification Fixed scaling Copy magnification at time 71, 82, 87, 93, 11
Keys to set to 5, 122, 141% (4) Character / Photo / Character photograph key A key to switch the mode of Character / Photo / Character photograph and perform gradation processing of image data by using a multi-bit frame memory. The above functions are the same as those of the conventional copying machine.

3. New copy mode (new copy mode of this machine) (1) Duplex mode ○ Single-sided copy mode (default) Front and back page mode The original and front and back images are formed on both sides of the paper.

The high-speed double-sided copy mode is limited to the 1-to-1 double-sided mode, the page order of the image data is exchanged using the frame memory 104, the image on the right page is formed on the surface of the first transfer sheet, and is conveyed by the double-sided conveying path. Then, the pages of this document are turned over, the image on the right page is formed on the front surface of the second transfer paper, and the paper is conveyed by the double-sided conveyance path. An image is formed and the first transfer paper is ejected.
When the number of copies is "2" or more, the transfer sheets are once stacked on the double-sided tray and are not conveyed by the high-speed double-sided path.

Spread Left / Right Page Mode The images of the spread left / right pages of the original are copied on the front and back sides of the transfer paper. Page claw mode Copies the image of the start page of the left and right pages of this document from the surface of the transfer paper. Therefore, when the right page is designated as the copy start page, both sides of the front and back pages are copied, and when the left page is designated as the copy start page, both sides of the two-page spread are copied.

When the sheet original reading mode is selected, only double-sided copying of front and back pages is valid, and normal single-sided original double-sided copying is performed. (2) Erase mode Center erase mode (default: Yes) Detects the document position and erases the image of the binding part specified width with the center of the two-page spread original as the reference.

Frame erasing mode (default: Yes) The size of the original is detected and the outer frame (upper, lower,
(Left and right) Erase the image of the specified width To cancel the upper, lower, left and right erase independently, set the erase width set value to "0". Images outside the size of this document are normally automatically deleted.

(3) Reference mode ○ Center mode (default) Copy is performed on the center of the transfer paper in the sub-scanning direction on the basis of the transfer paper. The image shift in the sub-scanning direction is performed by detecting the page length of the original document and placing it on the transfer paper. Right alignment mode Copies from the right side of the transfer paper to the set shift amount position with reference to the transfer paper.

Normally, the binding margin is formed on the left side of the transfer paper by the shrinkage of the binding section. Left alignment mode Copying is performed from the left side of the transfer paper to the set shift amount position with reference to the transfer paper. When the seat mode is selected, the alignment is always right. This is also effective in the double-page spread mode, and images are arranged on the transfer paper according to the length of both pages of the double-page spread original.

(4) Page limited mode ○ Both page mode (default) Copies are performed on both left and right pages. Effective in independent page mode. Right page mode Spreads only on the right page of this document. Used when copying single-sided originals such as files.

Left page mode Copy only the left page of the two-page spread manuscript. (5) Copy format mode Independent page mode (default) Spread pages of this manuscript are copied page by page.

Spread Pages Mode Both spread pages of this document are copied as they are. For double-sided copying of a double-page spread in which both the first double-page spreads are copied on the front surface of the transfer paper and the second double-page spreads are copied on the back surface of the transfer paper, only the double-sided front / back page mode is selected for the double-page spreads.

(6) Ejection Selection Mode ○ Back Ejection Mode (Default) Since this original is read in page order, the transfer sheet is ejected with the back surface ejected during normal one-sided copying. Front-side paper ejection mode Select when the number of originals is small or when checking images, and eject the transfer paper without inverting it.

It can be designated even when the sheet mode is selected. The transfer paper in the double-sided copy mode is discharged without inverting the transfer paper regardless of the setting.

(7) Page number setting input mode start to end page mode The number of pages from the copy start page to the copy end page is calculated, and the difference page is copied. Copy page number mode Repeats the specified number of pages from the specified left page or right page of this document. In this case, it is not necessary to input the copy page in the start-end page input mode.

This is because when the number of pages is not attached to this manuscript,
Used when the page is skipped. The number of pages setting method is 1. Select the copy page number input mode with each mode key, and 2. Enter the value on the copy page using the numeric keypad and 3. Confirm with Enter key. Normally, one page of this original is counted as one page, and when copying only the right page or the left page, it is regarded as a single-sided original and the copied page is counted as one page.

(8) Copy start page input mode Left page mode In independent page mode, copying is started from the left page of the document. Right page mode In independent page mode, copying starts from the right page of the document. This is also specified when each duplex mode is selected. In the double-sided copy mode, the first page and the last page are automatically discharged as blank pages by setting the copy start page and the number of pages. When outputting a double-page spread, the first and last half-page designations (half-size erasure) cannot be performed.

(9) Reading selection input mode ○ Main document reading mode (default) In the lower side reading, the main document is read and automatic page turning is performed. Sheet original reading mode The sheet original is read by reading from the upper side. Specify when copying a sheet document or the cover (hard cover) of this document.

4. Quantity setting mode The quantity setting method is 1. Select the amount setting mode with each mode key, 2. Enter the set value with the numeric keypad, and 3. Confirm with Enter key. (1) Erase width setting mode Center mode (default: 10 mm) The erase width is set in units of 1 mm from 0 mm to 40 mm based on the original. In the independent page copy mode, the binding portion erasing width of each page is half this.

Upper mode (default: 10 mm) The erasing width is set in units of 1 mm from 0 mm to 30 mm based on the original. Lower mode (default: 10 mm) Set the erase width in 1 mm units from 0 mm to 30 mm based on the original. Left / right mode (default: 10 mm) Set the erase width in 1 mm units from 0 mm to 30 mm based on the original. The left and right edges have the same amount, and the center erase width has priority in the independent page copy mode.

(2) Reference shift amount setting mode Left reference (default: 0 mm) The position (shift amount) from the left side of the transfer paper is set in units of 1 mm from 0 mm to 20 mm. Right reference mode (default: 0 mm) From 0 mm to 20 mm, set the position (shift amount) from the right side of the transfer paper in units of 1 mm.

(3) Full image mode The image is copied on the entire surface of the transfer paper without erasing the image outside the original size. This is used when the size of the original document in the main scanning direction is unknown, and is effective when the frame erasing mode is canceled. Image data outside the reading scanning range in the sub-scanning direction is white.

Next, the basic operation procedure of this apparatus (in the case of this original reading mode) will be described. (1) Main document reading mode selection Press the reading selection key 601 to turn off the sheet document reading mode (in the case of sheet document reading mode). (2) Copy mode set Copy format selection Independent page mode or spread page mode selection Editing / processing selection Sorting, double-sided, erasing, reference, page limitation, front-side ejection selected page number setting (required) Copy page number, copy start page Enter other settings Copy function (magnification, paper selection, text / photo, density, number of copies)
Setting (3) Set this document Open the document tray. Set this document Place this document on the platen with the left edge of the binding section and the front standard.
Hold the left cover with the left holding plate. Hold the right cover with the right press plate. Open the copy start page. The slide lever 33 is pushed to set the document claw 32. (The setting table raises the platen to make the top of the page flat.) Close the document tray. The original document can be set again after being set. By operating the slide lever, the original table upper and lower original tray switches are pressed to lower the original table and the original tray can be opened and closed.

(4) Copy Copy Start Pressing the print key to start the copy process. Copy end Automatic page turning / copying of the set number of pages (5) Main document takeout document tray opening instruction The document tray switch is pressed to lower the document table, and the opening is permitted. Open the document tray. Pull the removal release lever of this document to release the nipping of the left and right covers. Removing this original Close the original tray. After the original document set (3), copy mode set,
(2) The mode can be changed.

Next, the operation of the TPS system will be described. A. TPS operation mode (1) Reading mode Main document reading mode Sub-first mirror 222 is released, lower fluorescent lamps 201, 201
02 is turned on, and the carriage 200 is scanned to the right after shading correction at the left home position to read the two-page spread original at once, and the read image data is stored in the frame memory 104.

Sheet original reading mode The sub first mirror 222 is inserted into the optical path, and the upper fluorescent lamp 20 is read.
3, 204 are turned on, and the carriage 200 is scanned rightward after shading correction at the left home position to read the sheet original, and the read image data is stored in the frame memory 104.

(2) Return mode In the page-turning original document reading mode, a high-voltage bias is applied to the turning page belt 208, and the reading unit 200 is scanned leftward to reach the right end of the two-page spread original sheet. Stop at that point, raise the turning belt 208,
0.5 sec. After that, the carriage 200 is scanned leftward. The right edge and the upper edge of the two-page spread original are detected from the image read by the reading sensor, and the first page suction position and the image effective range in the main scanning direction are calculated. Further, when the page is turned, the position of the right end portion and the left end portion of the two-page spread original document is detected by the page sensor of the page conveying path, and the image effective range in the sub-scanning direction is calculated. Reading Unit Return Sheet In the original reading mode, the reading unit 200
Scan to the left.

(3) Homing mode When the power is normally turned on, the original table is lowered to move the carriage 20.
Evacuate from 0. The carriage 200 is scanned and set at the center home position. (4) Forward scanning mode The carriage 200 is scanned to the left home position to prepare for shading correction and reading. (5) Post-scanning mode After the return operation is completed, the carriage 200 is scanned and set at the central home position, and the document table is lowered to be retracted from the carriage 200, so that the original document can be taken out.

Next, the basic operation of TPS will be described in detail. (1) Main document reading mode a. By depressing the reading selection key 601, the original document reading mode is designated.

B. When the original document is set, both original tables are raised to abut and fix the original document on the reading unit 200, and the sub first mirror 222 is released.

C. By pressing the print key, the lower fluorescent lamps 201 and 202 are turned on. d. After scanning the reading unit 200 leftward to reach the left home position, shading correction, A
Perform GC. e. The reading unit 200 is scanned rightward to read the double-page spread image of the original document, and the image data is processed and then stored in the frame memory 104.

F. After scanning the reading unit 200 to the far right, charging of the turning belt 208 is started,
Scan the reading unit 200 to the left. g. The image of the original document is read by scanning the reading unit 200 in the left direction, and the right end portion of the original document is detected from the density difference between the original table and the page of the original document. h. When the turning belt 208 reaches the detected right end position of the original document, the reading unit 200 is temporarily stopped and the turning belt 208 is raised. After a certain period of time, the reading unit 200 is scanned leftward.

I. The image of the original document is read, the main scanning direction range of the original document is detected from the density difference between the original table and the original document page,
Calculate the automatic erase position in the vertical direction. After detecting the range of the main document in the main scanning direction, the lower fluorescent lamps 201 and 202 are turned off. j. The reading unit 20 after a certain time from the page suction
Scan 0 to the left. k. Detect the stored page with the page sensor on the page turning path,
The right end position of the page is accurately calculated from the detection start position.
It also detects whether the original is turned over.

L. At the point where the reading unit 200 reaches the center position, the left and right fixings of the left and right book manuscripts and the right and left of the right book manuscript stand are temporarily released to determine the spread shape of the book manuscript. m. When the turning belt 208 reaches the central point of this document,
The charging of the turning belt 208 is stopped. n. The reading unit 200 is scanned leftward to detect the discharge of the stored page by the page sensor of the page-turning path, and the left end position of the page is accurately calculated from the detection start position. Further, the central position of the double-page spread and the length of the double-page spread are calculated from the calculated left and right edge positions of the page.

O. After the completion of the calculation, the address of the frame memory 104 is designated by the detection position, the output form, and the erase information, and the data is read by the synchronizing signal from the printer and transferred to the printer. p. After the reading unit 200 reaches the left home position, the lower fluorescent lamps 201 and 202 are turned on to perform shading correction and AGC.

Q. The reading unit 200 is scanned in the right direction to read the double-page spread image of the original document, process the image data, and then store it in the frame memory 104. r. Read this document to the right edge,
Immediately after the 02 is turned off and the read image data is stored in the frame memory 104, the address of the frame memory 104 is specified by the detection position, the output form, and the erase information, and the data is read by the synchronizing signal from the printer. Transfer to printer.

S. Hereinafter, during continuous operation, f, h, j to n
Repeat the reading of p and r from p. (From the second time onward, the image detection at the end portions of g and i and the printout after the turning of o are not performed.) T. The end of the continuous operation is performed by the reading unit 200 after the reading unit 200 of p reaches the left home position.
00 is scanned to the right and stopped at the center home position.

(2) Sheet original reading mode a. By pressing the reading selection key 601, the sheet reading mode is designated.

B. The reading unit 200 is scanned leftward and the sub first mirror 222 is inserted.

C. By pressing the print key, the upper fluorescent lamps 203 and 204 are turned on.

D. After turning on the upper fluorescent lamps 203 and 204, shading correction and AGC are performed.

E. The reading unit 200 is scanned in the right direction to read a sheet original, and the image data is processed and then stored in the frame memory 104.

F. After scanning the reading unit 200 to a position determined by the transfer paper size and the magnification, the upper fluorescent lamp 2
03 and 204 are turned off, and the reading unit 200 is scanned leftward.

G. Immediately after the image data is stored in the frame memory 104, the data is read from the designated address of the frame memory 104 by the synchronizing signal from the printer, and the data is transferred to the printer.

H. Hereinafter, during continuous operation, reading and returning from d to g and writing and reading from the frame memory 104 are repeated.

I. The end of the continuous operation is stopped at the point where the reading unit 200 of d reaches the left home position when the print key is not pressed again.

As described above, according to the present apparatus, the image of each page of the original document is formed in the independent page mode in the original document image forming apparatus in which the image of the read page is formed by reading the original document. Is formed on each sheet of paper, and the images of both double-page spreads of this document are formed on one page of the sheet in the double-page spread mode. Therefore, copying with different image forming forms can be performed. Particularly, in the independent page mode, the page configurations of the original document and the paper can be made the same. Further, in the double-page spread mode, the number of copies can be halved, and in copying a main document such as gravure, it is possible to prevent separation of images across double-page spreads.

Further, both page images of the two-page spread original document are read by one scanning, the read image is converted into image data for each pixel and written in the image storage means, and the read image data is read from this image storage means for each page. By dividing the image range and reading the read image data to form one page, the read image data is continuously read from both sides of the page from the image storage unit to form the two-page spread images of the original on one page of the sheet. The image reading scanning can be controlled in the same manner regardless of the image forming mode. Further, even in the latter image forming mode, the image is read by one-time unidirectional scanning, so that the main document is less damaged.

Since the independent page mode is set by default (power-on, main document reading mode selection, mode clear, etc.), the page configurations of the main document and paper can be made the same, and the independent page mode with high copying frequency has priority. Can be selected. Further, the independent page mode is preferentially set as the first mode setting, and the selection display arrangement of the independent page mode and the spread page mode by the light emitting diodes 619 and 620 is set to the upper side of the spread page mode of the independent page mode, and the same selection key is used. 61
By setting the independent page mode to be the first in the selection order according to 8, it is possible to make the page configurations of the main document and the paper the same and preferentially select the independent page mode with a high copying frequency.

The present apparatus is intended for a left-turning (left cover) original manuscript with a relatively high ratio of horizontal writing, but there is also a vertical writing right-turning original manuscript. In this case, the document image forming apparatus may be arranged symmetrically with respect to the apparatus, and the right and left pages are opposite to the above. Therefore, even if the left and right pages and edges of the apparatus are different, they are included in the present invention.

[0242]

As described above, according to the first aspect of the invention, the original placing table on which the original is opened and placed, and the original is opened.
A reading unit that reads the image data on the left and right pages of this document, and
Image data on the left and right pages of this document read by the
Image forming unit that forms an image on transfer paper
On the left side of the opened original,
Set the double-page spread mode to form the image on the right page on one sheet of transfer paper.
Spread page setting means to set and left and right pages of the spread original
Set the independent page mode to form each image on one sheet of transfer paper
Either the independent page setting means or the left and right pages of the opened manuscript
Start page setting to start image formation from either side
Setting means, and setting the start page by the start page setting means.
Unnecessary pages from the left and right page images of this manuscript opened by default
If there is an image of the double-page spread, the double-page spread setting means
When the page mode is set, the reading means
Of the image data on the left and right pages of the original document read by
One piece of transfer paper by converting image data of unnecessary pages to white data
The image is formed on the independent page and the independent page setting means is used.
When the mode is set, the reading means
Of the image data on the left and right pages of the captured original document, the above is unnecessary.
Image is not formed using the image data of
Since an image is formed on one sheet of transfer paper using only image data, it is possible to form images of different forms. In particular,
In the independent page mode, the page structure can be the same as that of the original document. Further, in the double-page spread mode, the number of images formed can be reduced by half, and in the image formation of the main document such as gravure, separation of images across the double-page spread can be prevented. Furthermore, in the spread page mode
The starting page setting means is common even in the independent page mode
Can be used in
It is possible to prevent the image formation of pages.

According to the second aspect of the invention, the original document is read.
The original placing table to open and place, and the left and right pages of the opened original
Reading means for reading the image data of the
Image data of the left and right pages of the original document read by the external device
In this document reading apparatus having an output means for outputting to
The image data of the left and right pages of the opened original document into one image.
Spread as output as data Spread mode to set page mode Spread
Page setting means and image data for each left and right pages of the opened original
Independent page mode that outputs the data as separate image data
Independent page setting means and the right and left pages of the opened manuscript.
Set to start output of image data from either side
And a start page setting means for
Image data output
If there is unnecessary page image data in the left and right page images,
The spread page mode is set by the spread page setting means.
The original read by the reading means
Of the image data of the left and right pages of the manuscript, the image data of the unnecessary pages
Data into white data and output as one image data
However, the independent page mode is set by the independent page setting means.
The original read by the reading means
Of the image data of the left and right pages of the manuscript, the image data of the unnecessary pages
Since only the image data of the required page is output without outputting the data, it is possible to form images of different forms. Special
In the independent page mode, the page structure can be the same as that of the original document.
Also, in double-page spread mode, the number of images formed can be halved, and
When forming an image of this document such as a via,
Separation can be prevented. Furthermore, spread page mode
Both in the independent page mode, the start page setting means
It is possible to use it in general and is unnecessary in the spread page mode.
It is possible to prevent the output of an image on a different page.

[0244]

[0245]

[Brief description of drawings]

FIG. 1 is a block diagram showing a data processing block of an example of a system to which the present invention is applied.

FIG. 2 is a block diagram showing a part of a data processing block of the system.

FIG. 3 is a cross-sectional view showing an outline of a document table pressure fixing switching device of the system.

FIG. 4 is a plan view showing an outline of a book placement table in the TPS of the system.

FIG. 5 is a perspective view schematically showing a size stopper that positions the left and right document trays of the document tray unit of the system according to the size of the original document.

FIG. 6 is a plan view showing the outline of the same size stopper.

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

FIG. 8 is a side view schematically showing the unit opening / closing lock mechanism.

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

FIG. 10 is a cross-sectional view showing an outline of the document table pressure fixing switching device.

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

FIG. 12 is a perspective view showing an outline of a driving unit of the platen pressurization fixing switching device.

FIG. 13 is a plan view showing an outline of the document table pressure fixing switching device.

FIG. 14 is a schematic cross-sectional view showing an overall configuration of a device body in the TPS.

FIG. 15 is a side view schematically showing a document table lower retracting operation in the TPS.

FIG. 16 is a timing chart showing the timing of a downward retracting operation of the document table in the TPS.

FIG. 17 is a diagram showing a transition of the scanning unit at the home position in the pressure / fixing operation mode of the document table.

FIG. 18 is a diagram showing a transition at the image reading start position of the scanning unit in the pressure / fixing operation mode of the document table.

FIG. 19 is a diagram showing a transition at a main document center point of the scanning unit in the pressure / fixing operation mode of the document table.

FIG. 20 is a diagram showing a transition of the scanning unit during image reading of the right page of the original or during turning of the right page in the pressure / fixing operation mode of the original table.

FIG. 21 is a diagram showing a transition at an image reading completion position or a page turning start position of the scanning unit in the pressure / fixing operation mode of the document table.

FIG. 22 is a timing chart showing operation timings of the scanner motor and the left and right document table raising / lowering motors in the operation mode of pressing and fixing the document table.

FIG. 23 is a schematic plan view showing a drive mechanism of a scanning unit in the scanner unit.

FIG. 24 is a cross-sectional view showing an outline of a scanning unit in the scanner unit.

FIG. 25 is a schematic sectional view showing a structure of a sheet winding roller of the scanning unit.

FIG. 26 is a schematic side view showing a drive mechanism of a sheet winding roller and a turning roller of the scanning unit in the scanner unit.

FIG. 27 is a schematic cross-sectional view showing the positional relationship between the document pressing roller and the platen glass of the image reading section of the scanning unit.

FIG. 28 is a schematic sectional view showing the positional relationship between the platen glass and the glass holder of the image reading section in the scanning unit.

FIG. 29 is a side view schematically showing a switching mirror driving means and an optical path adjusting means for switching the optical path of the scanning optical system in the scanning unit from the main document scanning side to the sheet material document scanning side.

FIG. 30 is a sectional view schematically showing the scanning unit in a state where the switching mirror is driven to switch the optical path of the scanning optical system in the scanning unit from the main document scanning side to the sheet original scanning side.

FIG. 31 is a cross-sectional view schematically showing a scanning unit showing another driving means of the switching mirror.

FIG. 32 is a cross-sectional view schematically showing a main part of a scanning unit, which shows a page turning operation of the scanning unit in the TPS.

FIG. 33 is a diagram showing a transition at the left page image reading position of the scanning unit in the page turning operation mode of the scanning unit.

FIG. 34 is a diagram showing a transition at the right page image reading completion position of the scanning unit in the page turning operation mode of the scanning unit.

FIG. 35 is a diagram showing a transition at the right page turning start position of the scanning unit in the page turning operation mode of the scanning unit.

FIG. 36 is a diagram showing a transition in the middle of right page turning of the scanning unit in the page turning operation mode of the scanning unit.

FIG. 37 is a diagram showing a transition at the right page turning end position of the scanning unit in the page turning operation mode of the scanning unit.

FIG. 38 is a diagram showing a transition of the scanning unit in the course of discharging a right page in the page turning operation mode of the scanning unit.

FIG. 39 is an explanatory diagram of the charging timing of the image reading unit and the turning belt at the right page image reading completion position of the scanning unit in the page turning operation mode of the scanning unit.

FIG. 40 is a schematic side view showing a support structure of the scanning unit with respect to the scanner unit.

FIG. 41 is a schematic side view showing a relationship between a scanning rail and a pressing roller of a supporting mechanism of the scanning unit with respect to the scanner unit.

FIG. 42 is a schematic perspective view for explaining the positional relationship between the turning belt and the page feed roller in the scanning unit.

FIG. 43 is a schematic side view showing a contact state of the page feed roller with respect to the turning belt of the scanning unit.

FIG. 44 is a schematic side view showing a state in which the page feed roller is retracted from the turn belt by a toggle joint device that drives the page feed roller in conjunction with the operation of the turn belt in the scanning unit.

FIG. 45 is a schematic side view showing a state in which the page feed roller is brought into contact with the turning belt by the toggle joint device.

FIG. 46 is a cross-sectional view showing an image forming unit of the system.

FIG. 47 is a plan view showing an example of setting an original document of the TPS.

FIG. 48 is a side view showing a main document page storage detection unit of the TPS.

FIG. 49 is a plan view showing a part of the operation unit of the system.

FIG. 50 is a plan view showing another part of the operating portion of the system.

FIG. 51 is a diagram showing a page image range of a read spread book document of the system.

FIG. 52 is a diagram showing a page image layout in a main document image reference mode of the system.

FIG. 53 is a diagram showing another page image layout in the original document image reference mode of the system.

FIG. 54 is a time chart for explaining a reading sub-scanning direction range of a main document image and a layout method thereof in the system.

FIG. 55 is a time chart for explaining a reading sub-scanning direction range of a main document image of the system and an arrangement method thereof.

FIG. 56 is a time chart showing the copy operation timing in the main document copy mode of the system.

FIG. 57 is a timing chart showing the timing of main document mode operation during spread output / 1 to 1 copy mode continuous scanning in the same TPS.

FIG. 58 is a timing chart showing the timing of main document mode operation in independent page output / 1 to 1 copy mode in the same TPS.

FIG. 59 is a timing chart showing the timing of main document mode operation in the independent page output / two-copy mode in the same TPS.

FIG. 60 is a plan view showing a part of the operation section.

FIG. 61 is a plan view showing various displays on the operation unit.

FIG. 62 is a flowchart showing a page-only mode selection flow of the above system.

FIG. 63 is a flowchart showing a start left / right page setting flow of the system.

FIG. 64 is a flowchart showing a page number setting flow of the above system.

FIG. 65 is a flowchart showing a final page right / left discrimination flow of the system.

FIG. 66 is a flowchart showing a copy format selection flow of the above system.

FIG. 67 is a flowchart showing a reading selection flow of the above system.

[Explanation of symbols] 101 reading sensor 102 VPU 103 IPU 104 frame memory 200 scanning units 208 flip belt 501 printer

Continuation of front page (56) References JP-A-5-219323 (JP, A) JP-A-5-252356 (JP, A) JP-A-5-219321 (JP, A) JP-A-63-31974 (JP , A) JP 59-185362 (JP, A) JP 4-276981 (JP, A) Actual development 61-61549 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB) Name) G03B 27/00-27/80 G03G 21/00 376 H04N 1/10 H04N 1/107

Claims (2)

(57) [Claims] 1. An original placing table for opening and placing the original,
Reader who reads the image data of the left and right pages of the opened original document
Steps and left and right pages of the original document read by this reading means
Image formation to form an image on transfer paper using the image data of
And forming images of left and right pages of the opened original document on one sheet of transfer paper
Spread page setting means for setting the spread page mode and images for each left and right pages of the spread original document are formed on one transfer sheet.
Independent page setting means for setting the independent page mode and image formation from either the left or right page of the opened original document.
And a start page setting means for setting to start by setting the starting page by the start page setting means
Of the images on the left and right pages of the opened manuscript, the images on the unnecessary pages
If there is, the spread page mode is set by the spread page setting means.
When is set, the reading means
The unnecessary pages in the left and right page image data of the book
Image data is converted to white data, and the image is printed on one sheet of transfer paper.
Independent page mode is set by the independent page setting means.
Read by the reading means,
Of the unnecessary pages of the image data of the left and right pages of the original document
The image data of the required page is
The feature is that an image is formed on one sheet of transfer paper only by
This original document image forming apparatus. 2. An original placing table for opening and placing this original,
Reader who reads the image data of the left and right pages of the opened original document
Steps and left and right pages of the original document read by this reading means
And output means for outputting the image data of
In this document reading device, the image data of the left and right pages of the opened document are combined into one image data.
Output as a double-page spread Set the double-page spread mode
Constant means and, wide open book original left and right image data separate image for each page
Independent page setting to set the independent page mode to output as data
Image data from either the setting means or the left or right page of the opened original.
And a start page setting means for setting to start the output of
E, the image data output start page of the start page setting means
Unnecessary among the images on the left and right pages of this document opened by setting
If there is page image data, the spread page setting means
When the double spread page mode is set, the reading
Of the image data of the left and right pages of this document read by
Convert the image data of the unnecessary pages to white data and
Output as one image data, and the independent page setting means
When the independent page mode is set, the
Image data for the left and right pages of the original document read by the column
The necessary pages can be displayed without outputting the image data of the unnecessary pages.
Main document scanning characterized by outputting only image data
apparatus.