JPH02161869A - Image processor - Google Patents

Abstract

PURPOSE:To satisfactorily record plural original pictures set on an original platen with no omission by detecting positions of plural originals and recording the pictures of these originals at the centers of different recording media based on the detected positions of the originals respectively. CONSTITUTION:An image processor is provided with a detecting means which detects the positions of plural originals set on an original platen, a recording means which records the pictures of the originals scanned by a scan means at the centers of different recording media based on the detected positions of the originals set on the original platen. In such a constitution, the positions of plural originals set on the original platen are detected and the pictures of these originals are recorded at the centers of different recording media based on the detected positions of those originals. Thus the pictures of plural originals set on the original plated can be satisfactorily recorded with no omission.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an image processing device that processes an original image.

[Conventional technology]

In the past, copying machines simply reproduced originals faithfully or reduced or enlarged originals at a fixed magnification. The principle of the above-mentioned copying machine is that a document is irradiated with a light source such as a fluorescent lamp or a tungsten lamp, and the reflected light from the surface of the document is used as an image of the document, which is then passed through a lens or mirror directly onto a photoreceptor, which is charged with an electric charge on its surface. An electrostatic latent image is formed by irradiation, and then a developer is applied to the photoreceptor to form a visible image.

[Problem that the invention is trying to solve]

Therefore, the entire image forming process is carried out under mechanical control, and the operator is therefore required to recognize the size of the original image and the state in which the original is placed.

Furthermore, if the document is not placed at a predetermined position on the document table, the image may not be recorded at an appropriate position on the recording material, resulting in missing images or unsightly placement.

[Means to solve the problem]

The present invention has been made in view of the above points, and includes a document table on which a plurality of originals can be placed, a scanning means for scanning a plurality of documents placed on the document table, and a plurality of documents on the document table. a detection means for detecting the placement position of the original; and a detection means for detecting the placement position of the plurality of originals detected by the detection means; The present invention provides an image processing apparatus having a recording means for recording at the center.

〔Example〕

Hereinafter, the present invention will be explained based on examples.

In this embodiment, the original is irradiated with a light source, and the reflected light that forms the original image is not directly projected onto a photoreceptor, but is projected onto a photoelectric conversion element to obtain the original image as an electrical signal. Then, this electrical signal is processed by circuit means and software means to continuously enlarge/reduce the original image to an arbitrary magnification, extract an arbitrary area of the original image, or separate this area. You can move it to any area of the
By combining two functions, we have multi-functional image processing capabilities such as enlarging/reducing any area of the original image to any magnification, moving it to any location, and transmitting the image information processed in this way to a remote location. The device of this embodiment has a function that allows transmission. Furthermore, although conventional image processing methods using image memory means have been proposed, the apparatus of this embodiment eliminates the need for the memory means by performing the above processing in real time while scanning the original image. This is due to extensive cost reductions.

FIG. 1 shows the appearance of a copying apparatus according to the present invention. This device basically consists of two units.

They are reader A and printer B. Reader A and printer B are mechanically and functionally separated, so that they can be used independently. Connections are made only with electrical cables. Reader B is equipped with an operation section A-1. Details will be described later.

FIG. 3 shows a structural sectional view of reader A and printer B. The document is placed face down on the document glass 3, and its placement reference is on the back left side when viewed from the front. The original is pressed onto the original glass 3 by the original cover 4. A document is illuminated by a fluorescent lamp 2, and an optical path is formed such that the reflected light is focused on the surface of the CCDI via mirrors 5, 7 and a lens 6. And this mirror 7 and mirror 5 are 2
: It moves at a relative speed of 1. This optical unit moves from left to right at a constant speed while applying PLL using a DC servo motor. This moving speed is 180 mm/sec on the outward path while irradiating the original.
The return journey is 468 mm/sec. The resolution in this sub-scanning direction is 161 ines/mm. The document sizes that can be processed range from A5 to A3.
The loading direction of the original is A5. B5. A4 is placed vertically, B4.
A3 is placed horizontally. There are three return positions for the optical unit depending on the document size. The first point is A5°B5. 220 m from the document standard position for all A4 documents
At m, the second point is the same at B4 (at 364mm), and the third point is the same at A3 (at 431.8mm).

Next, regarding the main scanning direction, during main scanning, the maximum horizontal width of A4 paper is 297 mm depending on the orientation in which the document is placed. In order to resolve this at 16 pel/mm, 4752 (=297 x 16) bits are required as the number of COD bits, so this device uses two 2628-bit CCD array sensors and drives them in parallel. . Therefore, from the conditions of 161 ines/min and 180 mm/sec, the main scanning period (=CCD accumulation time) 7,569
MHz.

Next, referring to FIG. 3, the appearance of printer B placed under reader A will be described. The image signal processed by the reader A and made into bit serial is input to the laser scanning optical system unit 25 of the printer B. This unit
Reference numeral 25 consists of a semiconductor laser, a collimator, a nonsuncle, a rotating polygon mirror, an Fθ lens, and a tilt correction optical system.

The image signal from the reader A is applied to a semiconductor laser and undergoes electrical-to-optical conversion, and the diverging laser light is converted into parallel light by a collimator lens, and is irradiated onto a polyhedral mirror that rotates at high speed. scan. The rotation speed of this polyhedral mirror is 2.60 rpm. During scanning, the width is approximately 400 mm, and during the effective image, the width is 297 mm, which is A4 horizontal size. Therefore,
The signal frequency applied to the semiconductor laser at this time is approximately 20
MHz (NRz). The laser beam from this unit 25 is incident on the photoreceptor 8 via the mirror 24.

For example, this photoreceptor 8 has three layers: a conductive layer, a photosensitive layer, and an insulating layer.
Consists of layers. Therefore, process components are arranged thereto which make it possible to form an image. 9 is a front static eliminator;
10 is a front static elimination lamp, 1 is a primary charger, 12 is a secondary charger, 13 is a front exposure lamp, 14 is a developer, 15 is a paper feed cassette, 16 is a paper feed roller, 17 is a paper feed guide, 1
8 is a registration roller, 19 is a transfer charger, 20 is a separation roller, 21 is a conveyance guide, 22 is a fixing device, and 23 is a tray. The speed of the photoreceptor 8 and the transport system is <180 mrn/SeC, which is the same as the forward path of the reader. Therefore, reader A
The speed of copying using the combination of printer B and printer B is 30 A4 sheets/minute. Further, printer B uses a separation belt on the front side to separate the copy paper that is in close contact with the photosensitive drum 8, but because of this, the image corresponding to the belt is missing.

If you do not add a signal to the image, the toner will stain the separation belt and the subsequent sheets of paper. This separation belt has a length of 8 mm and is designed to cut off the video electrical signal of the print output. Also, if toner adheres to the leading edge of the copy paper, when it is fixed, it may wind up around the fixing roller of the fuser 22 and cause a jam, so an electric signal is also applied to the 2 mm width of the leading edge of the paper to prevent the toner from adhering. Cutting is done on the leader side. Next, FIGS. 11-1 and 14-2 show the main scanning direction of reader A and printer B and the output images. The reader performs main scanning from the back side to the front side, and the printer performs main scanning from the front side to the back side.

The copying apparatus of this example has intelligence such as image editing, but this intelligence is performed on the league A side by processing the signals read by CCD 1, and in any case at the stage of output from reader A. Even if the number of bits is constant (4752), the speed is constant (13°89 M I4 z
) signal is now output.

The function of intelligence is to enlarge/reduce to any magnification in the range of 0.5 → 2.0 times, to a specific magnification,
It has a trimming function that extracts an image only from a specified area, and a movement function that moves the trimmed image to an arbitrary location on the copy paper. Additionally, there is a function to perform halftone processing in 32 gradations by specifying a key. Furthermore, it has a composite function that combines these individual intelligent functions.

FIG. 16 shows specific examples of these.

(a) shows the editing function, (1) shows the front surface of the document, (2) shows the state when the copy is completed when only the trimming coordinates are specified, and (3) shows the trimming coordinates specification - movement coordinates. When specifying (however, an error message will be displayed if the size exceeds the copy paper size), (4) specifies the trimming coordinates + enlarges the moving coordinates at an arbitrary magnification (however, if the size exceeds the copy paper size, an error message will be displayed) In this case, (5) specifies the trimming coordinates and specifies the moving coordinates - when the reduction is performed at an arbitrary magnification, (6) specifies the trimming coordinates + AUTO specification (cassette size at a magnification in the range of 0°5 → 2x) (7) when changing the magnification from the reference position according to the orientation
indicates the state when copying is completed when trimming coordinates are specified + AUTO is specified. Note that the trimming coordinates to be shifted to the movement coordinates are determined based on the coordinate point having the smallest value in the sub-scanning direction.

(b) shows the relationship between the main scanning direction of the CCD and the laser, and (C) shows the method of specifying trimming coordinates.

If it is one work surrounded by a straight line, the specified order is ■～■
Do as follows. This coordinate designation is performed using the numeric keypad 12a shown in FIG.

FIG. 2 shows a transparent holder A-2 that can be sandwiched between the document cover 4 and the glass 3. It has the same width as the surface. On one side of the bag holder, a line is drawn that is divided into sections as shown in the figure, and around the line there are lines that are divided vertically, horizontally, or 5 to 1 Om.
Coordinates of 1-n and 1-m with m intervals are drawn. Each coordinate point corresponds to each point on the glass 3. Therefore, when a document is inserted into this bag holder with the image plane of the document facing the coordinate plane, it can be visually seen that various parts of the image plane of the document are indicated by the above coordinates. Therefore, the trimming coordinates and moving coordinates shown in FIG. 15(c) can be input by operating the keys on the operating section A-1 while visually viewing this holder. After inputting, the image side of the original is turned over and put back into the bag holder and placed on the three surfaces of the glass at a specified position, or the original is taken out from the bag holder and placed. In addition, the coordinates can be drawn in the color of the wavelength to which CCD 1 is not sensitive (and the document can be placed in the reference position on the glass surface while still in the bag holder. Note that the bag holder can be attached on three or one side. It can also be made up of sheets with a thickness of 9.
Coordinates can also be specified for manuscripts such as books.

Figures 4-1 and 4-2 are other concrete network wiring diagrams of the e-mail system between the head office building and the branch office building, and each league and printer are connected to a communication control unit (
A CCU (hereinafter referred to as CCU) is interposed between them, and is connected to a network with a bus structure using a coaxial cable CA as a medium.

In FIG. 4-1, when a reader and a printer are normally connected in a standalone manner, a cable 401 is used to connect the league connector JRI and the printer connector JPI. In Figure 4-2, when connecting a reader and a printer via a network, the conventional reader JR
Connect the connection that was made from I to the printer JRI to the JC of the CCU.
I, and then connect from JCI' to JPI. Although some of the signals between the CCU printer and the printer are required for control, this allows the CCU to be connected as an option without making any changes to the printer hardware. be. Also, there is CC in the league.
When connected to the CCU, communication-related commands from the operation unit are sent to the CCU.
Since it is necessary to send and receive data between
R2 is provided. The operation section of each league has keys and display functions related to communication as shown in FIG. Since this CCU is normally stored in the pedestal of the printer, it is expected that there will be a distance to the place where the communication cable, which is a network cable, is buried, so a lead-in line for that purpose will be required. That is cable 403, and its connector is JC3.

Connected to the network cable is a transceiver module 404 that integrates a connector that presses onto the coaxial cable and a modulation/demodulation circuit. The basic system of this network is a token-bus system in which network control of the bus structure is performed by passing token commands.

Next, the functions of the device of this embodiment will be explained.

In addition to simple copying functions, this device also has a variable magnification function that allows arbitrary enlargement/reduction, an editing function that allows you to extract or delete any part of a document, and a function that automatically detects the size and position of the document. It has various functions such as automatic scaling and editing. These functions for manipulating images of documents are collectively referred to as "image manipulation functions." In addition, you can simply make a copy of the original image read by League using the connected printer (CCU (Communication
Document images can be sent to other printers via the ControlUnit (Communication Control Unit). It is also possible to receive manuscript images sent from other leagues to the printer at hand. Such a function is called an "image transfer function." Furthermore, the above selected functions are added to 6
It can be arbitrarily registered to any number of preset keys.

The registered contents can be specified arbitrarily by the user, and the contents are retained even when the power is turned off.

Such a function is called a 1 preset function. Furthermore, it has an automatic exposure function that does not skip the background of the original, and a halftone processing function that outputs images with gradations such as photographs with good reproduction. 2 These are collectively referred to as "image quality processing functions." To summarize, there are five image manipulation functions:

Immediate magnification functions include 100% magnification (100% magnification) and fixed magnification (100% magnification).
size specification), stepless magnification (magnification specification 50-200%)
, XY variable magnification (independent variable magnification in main and sub-scanning directions) 91 Image inversion functions include original image and negative/bond inverted image. Editing functions include no editing, white masking, and black masking. However, the latter two automatically become the auto xy variable magnification function, and other variable magnification functions cannot be specified. White frame trimming, black frame trimming, and automatic document position detection are available. However, here, the magnification, image reversal, movement, and special magnification functions are linked.

The movement functions include no movement, destination specification, origin movement (cornering), and centering. , Special zoom functions include no special zoom specification, auto zoom, and XY zoom auto game. However, the latter two cannot specify other scaling functions. The movement function and special scaling function are enabled only when the editing functions such as white/black frame trimming and automatic document position detection are specified.

Screen transfer functions include local copy (normal copy), transmission (sending original images to other printers via CCU), and receiving (receiving original images from other leagues via CCU). .

Further, the preset functions include registration (storing in the preset key), reading (reading out the stored contents of the preset key), and reset (returning all functions to standard mode).

Further, the image quality processing functions include automatic exposure (AE) and halftone processing.

FIG. 5 is a detailed view of the operating section A-1 in FIG. 1.

This control section is thick (divided into three blocks).

The block on the right is a general-purpose key display section 100 found in conventional copying machines. The central block is a function key/display section 300 for the user to call up and use a copy/transmission function that has been arbitrarily created and registered using a block. The block on the left is a soft key display section 200 for the user to arbitrarily create copying/transmission functions. First, the general-purpose key display section 100 will be explained. Reference numeral 103 is a 7-segment L-LED display for displaying the desired set number of copies and the number of intermediate copies. Reference numeral 102 indicates a warning display used in a conventional copying machine, such as jam, out of toner, out of paper, or copy interruption. Reference numeral 104 denotes a copy density switching lever and the density display obtained thereby. i
Reference numeral 05 is a selection display for document images containing only text, only photographs, a mixture of text and photographs, and section vapor. These are provided to perform different image processing so that four types of original images can be copied in an optimized form. 106 indicates whether the selected cassette stage is the upper stage or the lower stage. Reference numeral 107 is a display device for displaying the paper size stored in the cassette of the selected cassette stage. 108 is a group of numeric keys 0 to 9 and C for setting the number of sheets on the display 103 and for entering numerical values in the program creation process (for example, trimming coordinates, movement coordinates, zooming) on the soft key display section 200. used for magnification, destination address specification, etc.). Next, press the display section 200 (2) to confirm the displayed key entry contents.
09 entry keys are provided.

11O is an interrupt key that interrupts multi-copy and performs another multi-copy; Ill is a copy cancel key that cancels multi-copy or reception of printer B; 10
1 is a copy key which instructs the printer to start printing or transmission. 113 is an original image switching key of the selection display 105, and 112 is a cassette stage switching key.

113. 112 shifts the selection from top to bottom every time the key is turned on. This part of the function key display section 300 has a structurally removable cover. The reason for this is the above-mentioned reason: one of the functions you created on the soft key display area is registered and corresponds to one key in 302, so you can give the function you created your own name and press the key. It is necessary to write it in 302. Therefore, after registering a function, the user takes off the cover, writes a name on one of the registered keys 302, and puts the cover back on.

As described above, since six function ◆ keys 302 are provided, the user can register six functions. When the user creates a function on the soft key display section 200, a message asking whether or not to register it will appear on the soft key display section 202. If the user responds with the soft key 201, the function will be displayed on the function display section 300. All six indicators 303 corresponding to six certain keys perform a blinking operation. This means that the machine is asking the operator, "Which function key do you want to register the above function to?" Therefore, when the operator presses any key at this time, the display corresponding to that key lights up, and the other indicators go off. The operator then removes the cover, writes the function name on the key, and puts the cover back on. Since the contents registered hereafter are backed up by a battery, they will not be erased even if the power switch is turned off. key 3
01 is a standard mode return key.

By the way, the display 114 lights up when the interrupt key 110 is turned on, but on the other hand, when it enters the reception mode, it blinks.
It notifies reception of image data from another station and prevents printing using the copy key 101. During the received print, the data set by Ki part 200.300,
Registration is possible. Therefore, when the copy key 101 is turned on after receiving prints are completed or during receiving, the received contents (sender address, total number of received prints, count number of received prints) are displayed on the liquid crystal display 202. This display can be erased with clear key C, and the standard mode display or copy key 10
Displays the data set before turning on 1. If the cancel key 11 is turned on while a multi-print is being received, paper feeding is blocked, the print cycle for the paper already in the path is completed, and printing is stopped. The sending side displays a message indicating cancellation on the liquid crystal display 202.

The reader unit will be explained in detail. FIG. 6-1 shows a system block diagram of the reader unit. The interface signals with this reader are shown on the right. When connecting to a printer, connect connector JRI and connector JPI on the printer side to connector JPI on the printer side. When setting up a reader/printer and communicating externally, input the signal that originally goes from JRI to connector JPI to JCI of the communication control unit (CCU), and then connect from JCI' of the communication control unit (CCU) to JPI. It has become. In addition to this, J is used as a protocol signal.
Connect R2 and JC2. The timing of the JRI interface signal is shown in FIGS. 7 and 8. BEAM D
The ETECT signal BD is for synchronizing the rotation of the scanner when the printer is connected, and corresponds to the leading edge signal of each line. VIDEO is an image signal, and 4752 signals are output per line, each pixel having a width of 55 ns.

However, one pixel can have up to three values, that is, 0. 1/2. Since it has a state of 1, it is 55 ns wide for O, and 1/2 is H for 27.5 ns in the first half and 27.5 ns in the second half.
When the width is s and the width is 1, the width becomes 55 ns. This signal is output in synchronization with the BEAM DETECT signal when a printer is connected, and is output in synchronization with an internal pseudo signal when it is not connected (transmission to another, etc.).

VIDEOENABLE is a period signal during which 4752 bits of the image data is output. This is also BEAMD
It is output in synchronization with the ETECT signal or internal pseudo signal. VSYNC is the output of the image leading edge detection sensor 37b and B
This is a signal that is output in synchronization with the EAM DETECT signal or an internal pseudo signal, and means that image data will be output from now on. VIDEOENA during signal
It is the same as BLE. The PRINTSTART signal is a paper feeding command to the printer side. ko (7) PRINT 5
The time interval between TART and VSYNC is determined by the control circuit (10th
13) in consideration of the variable magnification and the trimming area. PRINT END is a response signal from the printing side, which is issued when the trailing edge of the copy paper leaves the photosensitive drum 8 and rides on the conveyor belt 12, indicating that the printing operation has ended. This detects the completion of copy paper separation and is issued at sequence timing. The ABXCONN E C1' signal is (9 indicating that the CCU is connected), and when the CCU is connected, it does not fall to this terminal I I'm in a state.PRIN
The TERC0NNI CT signal is output when the PRINTER is connected, and the terminal J on the printer side is connected to GND). From No. 11 onward, Briso I is put into operation.

S, DATA, S, CLK, C3CBiJSY,
P.S.C.B.U.S.Y.

is a serial signal line for making a PR:Il call between the reader A and the printer 8 (permitting transmission between the two, exchanging information such as signals, etc.).

S, DAT8, S, and CLK are 16-bit protocol data and a clock, and both are bidirectional lines. C3CBUSY is output when the league side outputs data and clock to the above line, and PSCBUS
Y is output when the printer side outputs data and a clock to the line. Therefore, these are S, D
This line indicates the transmission direction of A, S, and CLK. Please refer to FIG. 8 for detailed timing.

Returning to FIG. 6-1 again, the league system block will be explained. CCU) reading section 601, 601'
There is a CCD, a clock driver for the CCD, a signal converter from the CCD, and an A/L') converter for converting it into A/L').
I) It has a built-in converter. This control signal to the COD is generated by control signal generating sections 603 and 603' (CCr) and supplied to the clock driver of the CCD reading section 601 and 601'. This control signal is generated in synchronization with the horizontal synchronization signal BD from printer B. Image data converted into a 6-bit digital signal is output from the CCD reading section 601, 601', and is sent to an image processing section 602.
602'. This image processing unit 602.602
'The CPU 614 samples the CCD output to control the light intensity of the light source, the sampling circuit, the shading 1 detection circuit for the light source and lens, and its correction circuit, and the peak light intensity in each main scan to perform the AE function. A peak hold circuit that detects the value, and a quantum circuit that determines the slice level based on the peak hold value or dither pattern of the previous line or the line before the previous line and converts the 6-bit image data into binarization or ternary data after completion of shading correction. It has a conversion circuit. The image signals quantized by the image processing units 602 and 602' are input to image editing units 604 and 604'. This image editing section 604.604' has 2
There is buffer memory for lines. The capacity for one line is more than twice the number of pixels per line, 4752. The reason for this is that each pixel data is
This is because data is written to the memory at twice the Zanblin rate, which doubles the amount of data. Another advantage of the 2-line buffer memory is that the memory can write and read at the same time! This is because when the image data of the Nth line is being written into the first memory, the image of the N-1th line is read out from the second memory. In addition, this part includes a write address counter for writing image data into this buffer memory, a read address counter for reading it, and a one-noctor circuit on the address for switching the address signals from these two counters. The counter uses a parallel load type in which an initial value can be preset, and the initial value is loaded into the I10 boat by the CPU 614. The CPU 614 makes it possible to edit the document information by presetting the address value corresponding to the main scanning coordinates in the counter every time the sub-scanning reaches a line corresponding to the trimming coordinates according to the coordinate information instructed by the operation unit 607. There is. There are coordinate area control counters and gate circuits to enable white masking, black masking, white frame trimming, and black frame l/rimming. C.C.
There is a seam detection shift register for automatic splicing of D. Since the image data from the image editing section is first output from 604 and then from 604', it is the composition section 605 that smoothly switches the data to form one serial image data. The recognition unit 606 is used to perform pre-scanning of the document during the main rotation period of the printer after the copy button is turned on, and to detect the coordinates where the document is placed at that time.

This part includes a shift register for detecting continuous 8-bit self-image data, an I10 port, and main/sub-scanning counters. The operation unit 607 includes a key matrix, an LED, a liquid crystal, and a liquid crystal driver.

608 is a DC motor for scanning the optical system, and 609 is its driving circuit. 610 is a fluorescent lamp for document illumination;
11 is its lighting circuit. A photo sensor 612 detects that the optical system unit is at the home position, and a photo sensor 613 detects that the optical system unit is at a position where the leading edge of the document is irradiated. CPU section 61
4 is CPU, ROM, RAM.

It consists of a battery backup circuit, a timer circuit, and an I10 interface. The CPU section 614 is the operation section 6
07, performs sequence control of the reader according to operation commands from the operator, and at the same time controls the printer using commands. In addition, in accordance with instructions related to image processing from the operation unit 607, image processing units 602, 602' and image editing units 604, 604' are operated before or during scanning of the original.
Data is set for various counters in .

Furthermore, prior to document scanning, the CPU 614 controls the light amount of the fluorescent lamp lighting device 611 based on the light amount data from the image processing unit, and controls the DC motor drive circuit 609 according to the magnification command.
Preset speed data for the image editing section 60
Collect the image connection data from 4°604' and calculate the amount of connection.

FIG. 6-2 is a flowchart of key control of the operation unit 607 by the CPU 614. When the power switch of the reader is turned on, the shift memory, RAM, etc., which will be described later, are first reset (1), and the memory of the liquid crystal display 202, etc. Set double, no editing, positive, no sending, and set the lower cassette, text original, and one sheet on the 100 side. In other words, set the standard mode (2). This also applies when the interrupt key 110 and reset key 301 are turned on. Next, it is determined whether the copy key is 3), and if it is not (N), it is determined whether or not the copy key is received. 300 entry routine (5). After setting and registering the mode and data using 200 and 300, it is determined whether the printer is capable of printing (6), and if possible, the process proceeds to the copy key routine. When the copy key is on, it is determined whether or not to send (8), and if it is not, it outputs a print start signal to the CCU (9), and when sending, it sends the destination address data and other data necessary for sending to the CCU. (10). Once in reception mode, transmission and printing are blocked even if the copy key is turned on, but the display of mode data up to that point is saved to a certain area of memory, and the received content is displayed on the display 202 instead (11). . Press the clear key to return from that display to the original mode data display (12).

While the copy key is not turned on, entries using the keys 200 and 300 are enabled, and changes thereof are also enabled (13). When the reception is completed (14), the process proceeds to step 3, the copy key routine, to enable copying. Step 1
3, when the cancel key 111 is turned on, the process proceeds to step 3 after a predetermined time and reception is canceled. Note that when the clear key is turned on in step 13, the data related to the number is reset and cleared, but the mode data etc. set by the soft keys are not reset. Standardization is reset by key 301.

Sequence control will be explained according to FIGS. 9 and 7. As shown in Figure 9, there are three
position sensors 37a to 37c. The optical home position sensor (signal OHP
output), and the optical system normally stops at this position. When the reader A is driven, the optical system starts scanning from left to right, and the image leading edge sensor 37b is provided exactly at the reference position of the image. The control circuit is this sensor 37b
When detected, the image data signal (VIDEO, CLK) is output, and each main scanning cycle (347, 2 μs)
3, and the control circuit generates a signal indicating the data valid period (VIDEOENABLE) in the VID
The sensor 37b starts counting the number of EOENABLE signals, and when the count value α corresponding to the first point, second point, and third point according to the cassette size or magnification of printer B is reached, the optical system moves forward. Turn off the drive signal, switch to reverse drive signal and invert. On the way back, PRI
An NT 5TART sensor 37c is provided, and when the optical system activates this sensor 37c after reversing, the control circuit judges whether or not the specified number of copies has been scanned, and if the number does not match the specified number, it instructs the printer to feed the next sheet. A PRINTSTART signal is generated to provide the PRINTSTART signal. Note that it is necessary to adjust the position of the sensor 37c so that T2 in FIG. 9 becomes equal to T. .

(Variable magnification) Next: How to enlarge/reduce the original image
3. The basic concept of magnification change is explained based on Figure 4.

te(yo1, sub-scanning direction I'iDC~-bo[-e37d
CP tT calculates the speed based on the manually entered magnification, and then calculates the corresponding 1/'I P I-L frequency 1.,, I/
O5 Tsuchi (1) 581: T, Run'il) Blise before running. On the return trip, a certain fixed value is set,
This prevents the optical system from returning at high speed.3゜This is the CPU (7)
The value stored in the ROM is this I / 0 Ratsuji (1) 5
This is done by presetting it to 8.

Therefore, when enlarging to 2 times, the speed at the same time (180 m
It moves at a speed of % of m/'sec), and when it is contracted outward, it moves at twice the speed. Main scanning is a method of sampling a CCDI serial signal (after A/D conversion) output at a constant frequency at a tarok rate depending on the magnification. For example, when enlarging by 2 times, if the sampling is shifted at a clock rate t, which is twice the CCD rate, data will be obtained by increasing 1 bit for each bit of original information, and when reducing by 2 times, the CCD clock If the sampling is shifted by an external clock of 1-1 of one note, data in which 1 bit of original information is thinned out by 1 bit can be obtained. , the CPU calculates the current Cl and L output based on the input magnification 151, and before starting sub-scanning,
10 latch (2) Set to 50. As mentioned above, CCDI has a 2628-bit configuration, of which there are 36 dummy bits and 2592 valid bits. Its driving frequency is 7.569 MHz, its signal line is φ, and the drive line 55. The clock φ for scaling is the same source oscillation as φ! Based on the value of 10 rad (2), the frequency oscillated by VC049 is set to PLL48.
Synchronization is achieved with φ2 to form a variable frequency. C
The 2592-bit analog signal output from CDI is amplified by AMP42 and AGC (automatic gain control circuit).
Can be applied to.

The AGC 43 detects the white level since the white level changes due to long-term changes in the light intensity of the fluorescent lamp, the background of the document, etc., and the relative amount of change from there is sent to the A/I) converter 44. This is a circuit that clamps the 01 novel. Then, the output of the AGC 43 is A/D converted and converted into a binary 6-bit discrete l-nor bit. On the other hand, the dither ROM 54 has 8 in the main scanning direction.
The bit interval and the sub-scanning direction are also 8-bit intervals with the same weight.
- code (6 bits) is set to be output, and 32 types of weight codes are assigned within this 8×8=64 bit matrix. Therefore, by the C3-bit main scanning counter 51 and the 3-bit sub-scanning counter 52,
2. Different weight codes are output by notching the dither ROM 54 at the same time. 3. There are multiple combinations of weight codes set in this 8 Consideration has been given to changing the reproducibility of the I--n image.Selection of this combination is performed by I10 latch (3) 53, and presetting to this latch (3) 53 is performed by the CPU before starting sub-scanning. This main scanning counter 51 is driven by a φ2 clock whose frequency is variable depending on the magnification.
The sub-scanning counter 52 is driven by the BEAM DETECT signal. Then, the 6-bit weighting code from the dither ROM 54 is compared with the A/I) converted 6-bit coat capacitor 47 and binarized to obtain a serial halftone reproducible image signal. It looks like this. Therefore, the meaning of sampling with different clock relays 1. is that the A/D conversion value is compared with the weighting code outputted with different clock relays 1. If we compare this comparator at the same rate as φ,
1. After that, if scaling is simply done by thinning out and inserting bits using a certain algorithm, that's fine for a normal binary image, but if you do it for an image that has been dithered in half-a-ft. For example, a 45° dither pattern becomes 30° or 60°.
The pattern may become stair-like, making it impossible to obtain smooth reproduction. Therefore, in this example, the comparator rate is changed according to the magnification ratio.

Next is circuit No. 45, which requires φ again because the conversion time due to A/D conversion differs depending on each bit.

is latched and synchronized. Also, as a matter of course, the address counter 63 of the shift memory 57-1, 57-2 is operated by the φ2 clock. As a result of the above, the shift memory 57-1.57-2 can hold 2592 bits when it is the same size, 1296 bits when it is A times, and 51 bits when it is twice the size.
It will contain 84 bits.

For the speed of the sub-scanning DC motor 37d, the value preset in the I10 latch (1) 58 of the CPU is input to the VCO 59, and the resulting oscillation frequency is synchronized with the original oscillation and the PLL 60, and is applied to the servo circuit 61. It is controlled by this. Note that the stroke of sub-scanning when changing magnification is at the 3rd point (431
, 8 mm). This is convenient for specifying an area for stepless scaling.

(CCD seam correction) How to automatically connect two CCDIs (main scanning direction)
Let's talk about.

As shown in Figure 1I (on the home position of the league (optical system))
A white plate is provided throughout the main scanning of the switch 37a (above switch 37a), and when the optical system is normally in the home position and the light source is turned on, this white plate is illuminated, and the reflected light is transmitted to the CCD.
It is designed to be input to I and 2. Therefore, when the control circuit is at the home position, it corrects the variation in the amount of light and the variation in the sensitivity of the two CCDIs (shading correction). In addition, a 2 m
A thin black line Bl having a width of m and long in the sub-scanning direction is provided. It is sufficient that this thin line has a size that is an integral multiple of quantization. and,
Similarly, when the optical system is in the home position, by turning on the light source, this black thin line appears on the bit at each end of the two CCDIs, so these CCDIs.

2 is input to the shift memory, and the lower 1.28 bits of the CCD1 system signal and the upper 128 bits of the CCD2 system signal are compared. It is confirmed that each of these 128-bit data always has a white bit before and after, and a sandwich of black bits. Then, the number of bits obtained by adding the number of lower white bits of the CCDI system and the number of upper white bits and the number of black bits of the CCDZ system is thinned out when reading from the shift memory of the C0D2 system. CCD 1 in the figure.

The second arrow indicates the main scanning direction, and the sub-arrow indicates the sub-scanning direction.

A specific method is shown in FIG. 12 and FIG. 13. shift·
In order to write the image signal to the memory, shift memory 57 is used.
-1.57 Since static RAM is used for -2, write address counter (write address middle counter 63
) and read address counters (read Q address Φ counters 64, 65). The amount of information input to the CCD differs depending on the magnification, so in this example, first
The DI system write address counter (1) is counted up from the LSB using the input clock φ2, and it is confirmed at what count it has stopped. CP this
Store in U's RAM. If the magnification was the same, it would have stopped at 2592 counts. Next, the upper 8 bits of the CCDI system (the first bit that appears in main scanning is MS
B) and the lower 8 bits of CCD2 system, C
Set the confirmed value to the write address counter of the CD1 system, and set 0 to the address counter of the CCD2 system.
Set 8H (hex code 08) to specify down count mode. - 8-bit shift registers 74 and 76 are provided to input the image signals from each COD, and the drive period of these shift registers 74 and 76 is controlled by the CCD.
The CCDI shift register 7
4, the image signal of the most significant 8 bits of the CCDI system and the image signal of the least significant 8 bits remain in the shift register 76 of the CCD2 system. These shift registers 74.
The remaining value at 76 is read by the CPU and stored in memory. Next, in order to take out the upper 9 to 16 bits of the CCD1 system and the lower 9 to 16 bits of the CCD2 system, the write address counter of the CCDI system is set to (the confirmed value -
8), set IOH in the write address counter of the CCD2 system, and read out the following using the same method as described above. After repeating this operation one after another to develop the upper 128 bits of the CCD1 system and the lower 128 bits of the C0D2 system in the memory, the number of black bits, the number of lower white bits of the CCDI system, and the number of upper molar bits of the CCD2 system are calculated. Then, by thinning out the number of bits obtained by adding the number of lower white bits of the CCDI system, the number of upper white bits of the CCD Z system, and the number of black bits when reading from the shift memory (2) 57-2 of the CCD 2 system, continuity in the main scanning direction is achieved. Achieve Nagi.

Next, the operation of the shift memory after the continuity logic is established will be explained. When writing to shift memory 57-1.57-2,
The write address counters of the CCDI system and the C0D2 system are preset with the values determined to be correct by the number of counts mentioned above, and the shift memory is addressed and written by counting down. When reading from the shift memory, the first thing that must be considered is the reference in the main scanning direction of the document. As shown in Figure 11, the document placement standard is 148.5 mm from the center of the thin black line (1.5 mm width) for splicing.
Since it is located at the CCD1 system shift memory (1
) The read start address of 57-1 is (number of lower white bits above) + (number of black bits/2) + (148,5X
16X magnification). The reading start address of the CCD2 system is the value of (the above confirmed value) - (the number of splicing bits).
First, the read address counter (1) 64 of the CCDI system is down-counted by the 52-pulse read tally, and when it reaches 0 and a ripple carry occurs, the CCDI system is activated.
The read address counter (2) 65 of the D2 system is operated by counting down.

FIG. 13 shows a circuit diagram related to these shift memories.

Shift memory (1) 57-1 is a static memory into which CCDI image data is stored. Shift memory (2) 5'l-2 is a static memory into which CCD2 system image data is stored. Light Atoshi/7S1
1 counter (1) 63 is shift conflict memory (1) 57-1
, and (2) is an address counter when writing data to 57-2. Read address counter (1)
64 is an address counter when reading data from shift conflict memory (1) 57-1, and read address counter (2) 65 is a read address counter (2) for reading data from shift conflict memory (2) 57-2.
This is the address counter when reading from. The address selector (1) 71 is a write address counter (
1) Address counter (1) for selecting one of the 64 address signals to address the shift memory (1) 5'7-1; The selector (2) 71 selects either the address signal of the write address counter (1) 63 or the address signal of the read address counter (2) 57-2 to address the shift memory (2). It is something. Shift register 74 is C
The shift register 76 is a register for extracting 8 bits of CD1 system image data from the lowest order.
This is a register for extracting image data in units of 8 bits from the most significant of the 2nd system. F/F73 is VIDEOENAB
Set at the rising edge of the LE signal, write / at l female /
There is also a note to control the period of input to the shift register 74 with the flip-flop (F/F) that is reset by the ripple carry of the counter (1) 63, F/F 75
is an F/F that is set at the rising edge of VIDEO ENABLE and reset when the read address counter (2) 65 is carried by a scramble contest, and is used to control the period of input to the shift register 76. The I10 port 72 is an Ilo for the CPU to read and check how far it has counted when the write address counter (1) 63 is moved by up count. I10 registers 66, 67, 69 are light fist address counters (1) 6
3. Read and address counter (1) 64. (2)6
This is a register for the CPU to give a preset value to each of the CPUs. The I10 register 68 is the write at 1 nos counter (1) 63, the read address counter (2) 65 is the up-karan] or down-karan [
・An address selector (1) for the CPU to specify 70. (2) The CPU specifies which counter value to select for 71, and the read address counter (2) determines whether to operate 65 using the write clock or the read clock. This is for the CPU to control so that one line of image data is supplied from the CCD driver circuit to the shift memory circuit by supplying a test signal.

Referring to this circuit diagram, the operation of extracting 128 bits of CCDI system image data in 8 bits from the lowest order and 8 bits from the most significant of CCD2 system image data in order to perform splicing will be explained.

■CPU starts with write address counter (1) 63
to up-count mode, ■10 register (1) 66
Set O to . ■I10 register (4) 68 TE
By applying one pulse as the ST signal (corresponding to machine start), one VIDEO ENABLE and φ2 clock corresponding to the magnification are generated from the CCD driver in FIG. 10, and the data is transferred to the shift memory (1) 57-1. (2
)57-2.

■Light emperor address counter from I10 boat 72 (
1) The CPU takes in the value of 63. ■ Set the write address counter (1) 63 to down-count mode, set the read address counter (2) 65 to down-count mode, preset the value stored in I10 register (1) 66 in Preset register (3) 69 to 7H. (2) Give one pulse to the TEST signal, and when VIDEO ENABLE disappears, 8 bits of shift registers 74 and 76 are sequentially fetched into memory and stored. ■I10 register (1) 66 (value of ■-7H)
and set IOH in the I10 register (2) 67.

Do ■■. ■Similarly, I10 register (1) 6
6 (value of ■ - 77H), I10 register (2) 6
Set 7FH to 7, give the TEST signal, and repeat until the shift registers 74 and 76 are read. Details regarding the seam correction described above can be found in the specification of Japanese Patent Application No. 128073/1983 filed by the same applicant.

FIG. 15 illustrates a method of image editing in which a trimmed image is scaled to an arbitrary magnification based on an arbitrary point. Figure A is a document surface, Figure B is an enlarged view, and Figure C is a shift diagram. The basic method of image editing is (1) Calculating post-editing coordinate values based on the coordinate values of the trimming area, the movement coordinate values, and the magnification (Figures A to C). ■ The CPU determines the minimum (based on document placement standards) of the coordinates in the main scanning direction (X) and the coordinates in the subscanning direction (y) from the coordinates of the trimming area, xQ, )'o. do. Since the coordinates are inputted using keys in units of mm, and since the rate is 16 lines/mm, the number of lines L0 of the Yo coordinate is (yox16).

Also, the information amount I of the XQ coordinates. becomes (x(,X16)) (A
figure).

(2) The CPU determines the minimum value in the X and Y directions from the edited area coordinate values and sets it as X+*Y+ (Figure C).

■Based on x□, the magnification, and xl, determine the preset value of the read start address in the read address counter read from the shift memory (calculation of address A3 in Figure C). This point will be explained in detail with reference to FIG. 15-I. In order to expand this by two times using shift memory (4752
There is an X2) bit. Amount of information in memory when simply expanded
, becomes (x,)X magnification×16) bits. Also, the address A of the shift memory according to the magnification of the Xo coordinate is (A1
1+). In addition, A1 is the first address of the memory and CO
It is stored in the RAM at the time of joint correction of D. By the way, y
. The number of lines L2 according to the magnification of the coordinates is (Lo x magnification).

Next, output this enlarged image to xl from the shift point (calculate the read start address A3 of the shift memory, but it is
2+I2. Note that I2 is the amount of information corresponding to the shift coordinate XI, which is (x, Xl6). By the way, y, the number of coordinate lines, is y, X16.

Next, ■ 3'o, magnification and y, based on the above-mentioned PRINTS
Determine the generation interval from the generation of the TART (paper feed) signal until the start of the optical system or until the generation of VSYNK (L
3 calculation). That is, -L2 corresponds to it. When this difference is +L3, it is L3X main scanning cycle (347, 2μs) earlier than the 5TART signal or VSYNK signal as the reference.
put out. Also, when -L3, 5TART signal or V S Y
The NK signal is output later than the above.■In order to output the image only to the editing area, a start bit counter and an end bit counter are provided to gate only a part of the image data in the main scanning direction. 80.81 in Figure 13
correspond to each.

This presets the count data for the gate via Ilo. The flip-flop 82 is set by the count up of the counter 80 and reset by the counter 81. The operation is shown in FIG. 15-G. ■Calculate the number of lines between changing points in the sub-scanning direction from the coordinate values and magnification of the trimming area (D, E).

Figure F). , :tL is CPUt? VIDEO ENABLE
[count]・by doing. In the figure, M is the number of lines between changing points in the sub-scanning direction, H is the number of bits in the main-scanning direction, and N
is the number of lines between changing points in the sub-scanning direction when changing magnification (N=MX
magnification).

■Start bit counter 80 and start bit counter 8 from the edited X-direction coordinate value to the change point of ■.
A preset value of 1 is calculated and set as shown in Figure 15-H.

Note that even if there is no trimming (even when outputting an image on the entire surface), the start bit counter 80 and end bit counter 81 are recognized as the leading margin and are used for margin creation 1.The initialization is the same as above. There is, but 2 m of the tip margin
After counting the 36 lines, the start bit counter 80 is set to 7.5 mrn x 16 bits to 120 bits to avoid the possibility of running the separation belt.

Figure to-i shows the light source for document illumination and the lens layout.
3 shows a configuration for f-ing correction. Shading correction is performed using the following screen when the optical system is at the home position for each copy.
-Do it with a can. First, a fluorescent lamp is turned on to illuminate a standard white or gray plate in the main direction of Bl width in FIG. 11 located on the home position HP, and the reflected light is input to the CCD. At this time, the switch 701 in the circuit is set to the l side, and the photoelectrically converted signal from the CCD is converted into AMP and A/D. Then, the data is zumbling every 8 pixels and stored in RAM 70.
Written to 2. The reason why it is displayed every 8 pixels is RAM.
This is to reduce the memory capacity of 702. Therefore, eight adjacent pixels (including white pixels) are corrected based on the shading data of one pixel.

Next, when the optical system moves to document scanning, the switch 701 is set to the 2 side, and the A/D converted image data of the COD is sequentially multiplied by R.
When input as an address signal to OM 703, R
The contents of AM 702 are also read out once for every 8 bits of the CCU signal, and similarly input to multiplication ROM 703 as an address signal. For example, if the input value from the RAM 702 is a value of 3/4, the ROM 703 has written therein the contents obtained by multiplying the input value from the CCD by a value of 4/3. As a result, in the multiplication ROM 703, the RAM 7
The COD signal is corrected based on the input value from the comparator 02 and output to the comparator 1 notaf 05. Also, due to the composition,
Since there is a thin black line for automatic CCD connection in the center of the standard board, when writing the shading value to the RAM 702, the correction value for this part is written as a value in the vicinity thereof.

In addition, the fluorescent light is stably dimmed by the light reflected from the standard gray plate. That is, by comparing the A/D output with a reference value and controlling the lighting cycle of the fluorescent lamp, fluctuations in the light of the fluorescent lamp can be prevented. This is done before or after the shading correction described above.

FIG. 10-2 shows a binarization circuit. Latch (1) 80m
The output from the dither ROM 704 is switched by a selector 803, but this is because when an instruction for a photo original, etc. is input on the operation panel, the CPU selects the output from the dither ROM 704, and selects the output for a text original, etc. This is to enable the output of latch (1) 801 to be selected when an instruction is input. When the instruction from the operation unit is for a text document, etc., the CPU selects the selector 803 to latch (1) 801 and displays the peak hold value (1st (Figure L-3) of the previous or previous main scanning line). The slice level is determined based on the operation unit density 1 width 104 (Fig. 5) value and set in the latch (:1) 801.As a result, background removal (AE) is performed.Instructions from the operation unit etc., the CPU uses the selector 803 as a dither ROM.
Set it to 704. At this time, CP LJ is operating lever 1.
Latch the 0-F dither type based on the 04 value (2)
804 and select it. This differs in the level of dither elements and their arrangement.

Also, as mentioned above, the CPU calculates the CCD connection amount and connects the image data before scanning the original, but since the dither pattern also needs to be connected on the left and right, CPL7 uses the pre-calculated connection distance to latch (3) 807. When set, the value of the main scanning counter (1) 805 is offset by that portion. Counter (1) 805 is a 3-bit counter driven by the main scanning clock, and counter (2) 806 is a 3-bit counter driven by the sub-scanning clock, for example, the VIDEO ENABLE signal. For this reason, the dither pattern is a maximum of 8×8 matrix. It is also possible to use the dither ROM 704 as a RAM and set the matrix elements of the RAM according to the inputs of O-F by the CPU.

Figure 10-3 shows the circuit for AE. Regarding document background removal, the peak value of the image signal from the CCD is detected for each main scanning line. In other words, the background of the original should have the largest amount of reflected light when the original is irradiated, so the peak value of the COD output is detected for each main scanning line (1/16 mm pitch) and the midpoint between the peak value and the minimum value is detected. If you set the slice level in the area, you can always remove the background. As for when to set this slice level, it is not known that peak value detection is complete until the main scan ends, so basically the slice level of the current line is set based on the peak value of the previous line. , will be set after the main scanning of the previous line is completed. There is no effect on the image.

According to FIG. 10-3, the first pixel image data subjected to shading correction from the multiplication ROM 703 is latched in a latch 904. After latching, the latch data and the second pixel image data are compared by the comparator 705, and if the second pixel data is greater than the first pixel data, the boat A<
B is output and set in the latch 904, otherwise the first pixel data remains in the latch 904 as it is.

If the same method is continued until the end of the main scan, the maximum value will remain in the latch 904. This data is read via the I10 port 906 every time the main scan ends. After this CP
U immediately determines the slice level and sets it in latch (1) 801 in Figure 10-2.

Figure 17-1 shows a document 3 on the document table glass 3 of reader A.
00 is placed. Basically, as mentioned above (
The mounting position is fixed, but it can also be placed diagonally as shown in the diagram.

In this case, the coordinates (
X+, Yl), (X2゜" 2)l (X 3+ Y
3) l (X 41 Y4) is detected by pre-scanning the optical system during the pre-rotation operation period of the printer. This allows the size and position of the document to be determined. This makes it possible to determine the scanner scan stroke during multi-copying and to select a desired cassette. The document cover 4 (FIG. 2) is mirror-finished so that image data outside the area where the document is placed is always black data. In order to perform sub-scanning over the entire glass surface, main scanning and sub-scanning are performed, followed by scanning for printing. This sub-scanning speed is faster than that during printing.

The circuit diagrams in FIGS. 17 and 2 show the logic for detecting the coordinates. The image data VIDEO that has been binarized by the previous scan is input to the shift register 301 in units of 8 bits. 8
When the bit input is completed, the gate circuit 302 checks whether all of the 8-bit data is a white image, and returns Yes.
If so, 1 is output to the signal line 303. After starting scanning the original, the F/F 304 is set when the first 8-bit white appears. This F/F 304 is reset in advance by VSYNC (image leading edge signal). After that, the next VSY
Leave it set until NC comes. When the F/F 304 is set, the value of the main scanning counter 351 (main scanning counter 805 in FIG. 10-2 or a dedicated counter) at that time is loaded into the latch F/F 305. This becomes the X coordinate value. Also, the sub-scanning counter 35 at that time is stored in the latch 306.
2 (sub-scanning counter 806 or dedicated counter in FIG. 1O-2) is loaded. This becomes the Y coordinate value.

Therefore, P+ (x+, Yl) is found.

Also, each time 1 is output to the signal 303, the main scanning counter 351
Load the value from into latch 307. This value is immediately stored in clutch 308 (until the next 8 bits enter shift register 301). When the value from the main scan when the first 8 bits of white appear is loaded into latch 308, 310 (which is set to 0" at the time of VSYNC) is compared with the data in comparator 309. If the data in latch 308 is larger, the data in latch 3
08 data, that is, the data of latch 307, is the data of latch 3
10.

Also, at this time, the value of the sub-scanning counter 352 is loaded into the latch 311. This operation continues until the next 8 bits enter shift register 301. Latch 3 like this
08 and latch 310 for the entire image area, the maximum value of the original area in the X direction remains in latch 310, and the coordinate in the Y direction at this time remains in latch 311. This is the P3 (X3°Y,) coordinate. .

F/F 312 is an F/F that is set when 8-bit white appears for the first time in each main scanning line and outputs the horizontal synchronizing signal HS.
It is reset at YNC, the first 8 bits are set to white, and are held until the next HS YNC. This F/F31
2 is set, the value of the main scanning counter 351 is set in the latch 313, and the value of the main scanning counter 351 is set in the latch 313 until the next H5YNC.
14. Then, the latch 315 and the comparator 316 compare the magnitude. Latch 315 has VSYNC
The maximum value in the X direction is preset at the time of photogenesis. If the data in latch 315 is greater than the data in latch 314, signal 317 becomes active, and the data in latch 313 is transferred to latch 314.
15. This operation is H8YNC-HSYN
This is done between C. If the above comparison operation is performed for the entire image area, the minimum value of the document coordinates in the X direction remains in the latch 315.

This is X2. Also, when the signal line 317 is output, the value from the sub-scanning counter 352 is loaded into the latch 318. This will be Y2.

Latches 319 and 320 are loaded with the values of main scanning counter 351 and sub-scanning counter 352 each time 8-bit white appears in the entire image area.

Therefore, when the document pre-scanning is completed, the count value at the time when 8-bit white appears last remains on the counter 3, which is (X4.Y4).

The above eight latches (306, 311, 320, 318
The data lines of
The CPU will read this data at the end of the previous scan.

Of these data, X 21 X, l.

The areas Y, , Y4 are determined as document areas, and the above-described trimming process is performed when scanning the document for printing. That is, the coordinate component of the original document is X2. X,,Y,
, Y4, the coordinates of the rectangle surrounding the document positions P, -P4 indicated by the dotted line can be recognized, and it can therefore be seen that a small number of sheets of corresponding sizes are required.

Therefore, as in the first example, the cassette size data from the printer and the original size data are compared, and the cassette that is closer to the original size is selected. It is C as shown in Figure 17-3.
Depends on PU flow. Distance Δy between coordinates Y4 and Yl
Calculate the size (Step 1), and compare whether it is smaller than the A4 size (Step 2). If it is smaller, select an A4 cassette (output A4C data to the printer (Step 3). If it is larger, select the A4 cassette. And if the size is smaller than B4, the B4 cassette is selected, and if the size is larger than B4, the A3 cassette is selected (steps 4-5).The CPU on the printer B side outputs these data (
According to the size signals already obtained from the two cassettes according to S6DATA input), if there is a corresponding size signal, feed paper from the corresponding cassette I. Reader A sends data to that effect back to reader A. Reader A displays this information.

On the printer B side, paper feeding control of the registration rollers 18 is performed so that the leading edge of the paper and the coordinate Y are synchronized. In the standard mode, the signal VSYNC from the reader A (the above-mentioned image tip sensor 37
b), the registration roller 18 is operated, but in this case, as in the case of the trimming shift described above, this is done by providing a time corresponding to Yl between this signal and the signal from the image tip sensor 37b. . Further, since each cassette is loaded based on a position corresponding to the reference position SP side of the printer, the image output is shifted by X in the main scanning direction. This is done by presetting the read address counter in the same way as in the trimming shift described above. The above control mode is selected by the shift key corresponding to the display set by the above-mentioned setter key, but it can also be achieved by providing a dedicated key and inputting it.

As a second example, by inputting the above-mentioned auto command, this portion can be printed at a size C and scaled so as to fit the sheet in the cassette I. This means that the printer's selected cassette size signal is S, DA.
Since the signal is sent to the reader via the TA line, the desired copy can be obtained by sequentially performing trimming, shifting, and scaling according to the procedure described above in FIG. 16 using this signal.

That is, the auto l calculates the ratio mx, my of the document size ΔX, Δy in the X direction, Y direction to the size Px, Py of the cassette sheet in the X direction, Y direction, as shown in FIG. 17-4.
(Step 1l-14). Then, the smaller ratio is set in the RAM as a common magnification for X and Y (steps 15 to 17), and the aforementioned magnification changing procedure is performed.

Therefore, a copy with automatic scaling based on one direction of the sheet can be obtained. As shown in Figure 17-5, Auto 2 calculates the ratios of the original in the x and y directions relative to the x and y directions of the sheet (steps 21, 22, 24, and 25), and calculates the magnification in the x and y directions.
Set the magnification in the Y direction independently (step 23.
26). Therefore, the original image can be copied onto the sheet cup. Auto 1.2 can be similarly executed in auto magnification change performed by specifying trimming coordinates.

As a third example, a document skew warning can be issued. That is, the 17th-
As shown in Figure 6,
Y l + Y3 is Y2. Steps 31 to 3 determine whether Y4 are equal (with a difference of several bits).
4) If not, a warning is displayed (step 36). However, printing operations are possible. The above flowchart shows the program flow processed by the CPU of the beam reader.

Incidentally, FIG. 15-L shows a flowchart of the above-mentioned trimming, scaling, and shifting procedures. X only if there is a shift
. First, we took measures regarding point 13'o (No. 15-J).
), in the case of no shift (movement), the start bit counter 80 in FIG. End dot counter 81
You can control the outside of the trim to make it white. In this case, since the area that can be trimmed is one area surrounded by straight lines, the area to be divided into rectangles in the y-axis direction is specified by specifying two diagonal points in xy coordinates. Note that the maximum value is to divide the same document into three. Enter the unit in mm.

In other words, (XoYo+X+7+)+(X2)'2゜X
3Y3)+(X4Y41 Xs)'s) is performed sequentially. In the case of manual shift or auto, coordinate conversion is performed as described above to control the VIDEO output.

In FIG. 13, 90.91 is an exclusive OR gate for determining the image area, and OF is a signal that controls it. When l, the inside of the area determined by the ST counter and EN counter is masked, the outside is set as the output image, and 0 In this case, the area inside the area is used as the output image and the area outside the area is masked. 92 is an AND gate that controls the output of the previous image data; 93 is an AND gate that determines whether to output the mask as black or white; BB is a signal that controls it; When it is 0, white is output. 95 is an OR gate that outputs the image output from gates 92 and 93 as VIDEO; 94 is an exclusive OR gate that controls black and white inversion of image data; IN is a signal that controls it; when it is 1, it is the original raw image; when it is O, it is the original raw image. Invert. Each signal is output when the CPU determines that masking, white, black, and negative inputs have been input using the shift key.

That is, in the case of mask signal l, when the ST counter goes up and the Q of the flip-flop 82 becomes 1, the output of the gate 90 becomes O, and the output of the gate 92 remains unchanged until the EN counter goes up, that is, until the Q becomes 0. do not have.

In other words, it is masked. Instead, the output of the gate 91 is 1 during that time, so when the black/white signal BB is 1, the gate 93 is 1, and therefore the image output gate 95 continuously outputs 1. In other words, it is masked. Conversely, if 0F=1°BB=0, a white mask is created. Also, if 0F=O, gate 9
0. Since the outputs of 91 each become 1.0 during that time, BB
If = 1, the outside of the trimming will be black, 0FF = 0, BB = 0
If you do this, the outside of the trim will be white.

FIGS. 18-1 and 18-2 are an explanatory diagram and a control flow diagram by the CPU for moving a small original or a trimmed original to the approximate center of the sheet and printing (centering). That is, as described above, the maximum value and minimum value (TXM
AX, TYMAX), (TXMIN, TYMIN) (1). This can also be set by the aforementioned coordinate detection. Next, ・[Shout F'j ')
Determine the 1 person rate in the X+” direction.

41. is the subroutine O) MX by the method of Ar1
.

It is found as MY (2). In order to select an arbitrary magnification in the X and Y directions, MX and M\ can be determined using the numeric keypad as described above, or can also be determined using subroutine ATII. Next, set the length of the sheet in the X direction and ■ direction to the PS bow as PS-Y in RAM. This is determined by the data from the blink (3). Using the stiff data, move coordinates TXM for centering,
Find 'fYM (4). By subtracting the scaled length during trimming in the X direction from the length of the sheet and dividing the result by 1/2, the X direction coordinate TXM can be determined. Similarly, TYM in the Y direction is determined 1. It is considered valid only if TXM and TYM are positive, and a warning is issued if they are negative (5)
. After that, follow the method shown in Figure 15-A. trimming, (5)
Black frame trimming, (6) White frame trimming + Move destination designator Tengi magnification specification, (7) White frame trimming (centering - (-tincture/-magnification specification), (8) Automatic document position detection and tiger point (SP) movement ( - No example of auto magnification (Ar1) is shown.

Figures 20-1 and 20-2 illustrate how to read the right and left pages independently or consecutively with a book manuscript open on the platen and print them on one or two sheets. and a control flow diagram. First, in Figure 20-1, pre-scan the original and determine the size (XI, Yl) of the original from the detected coordinates as described above (1). Invert the optical unit at the 1/2 coordinate point and do not return it 4. In other words, first read the left half and print the portion of Yl/'2 (2).Next, the second half is read.
Perform the main scan to point Y2, reverse it, and return the optical system 3
, in this case 1. /2 to Y2 is printed (:3
).

In the flowchart of FIG. 20-2, first, when the book mode is manually specified using the soft key, a document size detection flag is set to detect the size by manually scanning the copy key. Next ζIs the requested copy only on the left (1), only on the right (2), should both the left and right be printed on a sheet (3), or should the left and right be printed sequentially separately as shown in Figure 20-1 above (4)? ),to decide. This is the CP for soft key input.
Depends on U's decision.

For left only, trimming coordinates Y M I N - y
As i, YMAX is calculated by calculating (Y1+Y2)Xo, 5.

In other words, the center (binding) of the book is found (5). Next 1
11 Centering 4. Give (6). Next is the inverted position of the optical unit! ) as (Yl (~Y2) Can be printed in the center.

For right only, set the trimming coordinates YMIN to (Y1+Y2
)Xo, 5, and YMAX$:Y2 (8).

Next, centering (9) is performed to obtain the inversion P ([0).

If you want to print the same sea 11J on the left and right, use the normal Yl,
Coordinates are determined in the same manner as Y2 trimming (11), centering (12) is performed, and inversion P is determined (13).

Furthermore, when printing the left and right sheets sequentially on separate sheets, data is set by sequentially performing the above-mentioned left-only case and right-only case (14). That is, data for two cycles is stored. When the copy key is turned on, it is determined whether the mode is BK mode or not, and when it is BK, a pre-scan is performed and the coordinate data is stored according to each mode, but after the pre-scan is completed, when it is in (right + left) mode, it is first scanned. The data on the left side only is read from the RAM, and the above-mentioned atto 1 counter preset control and scanner sequence control are performed to print the first sheet. When the scan is completed and you return to the home position, CI)U is (right] - left)
It is determined from the RAM data whether the mode is set to 7 or not, and when this mode is set, the right data is read out and the above control is performed to print the second sheet.

In the above case, the area other than the document can be made black or white without performing automatic scaling. In each of the above modes, the image is reproduced at an appropriate position by delaying or advancing the tog during star trimming of the scanner depending on the amount of information due to centering, etc., as described above.

Note that the document coordinates Yl and Y2 can also be manually input using the numeric keys or size keys. In addition, the main scanning direction can be automatically detected, and centering can be performed simply by manually determining the keys XI and X2.

In this way, the right and left pages of the book can be printed in real time with appropriate magnification without moving the book, making the copying operation extremely easy. Also, it can be printed in the center of the sheet, and excess information can be arbitrarily cut.
Extremely high copy quality (possible. Also, printing can be started before the reading is completed by the reader, and the copy speed can be increased even though each edit has been made. Also, in the transmission mode to another printer, the command control of the CCU It is configured to simultaneously send image data to the printer attached to the league, so it is possible to monitor the read image for transmission.Also, by connecting the protocol line and the reader's CPU, the status recognition of each printer terminal can be
After the PU performs the above operations, the various editing and image quality controls described above are performed when the image is normal, and the image data is transmitted to a plurality of printers including an attached printer, so that the reproduced image quality, etc. can be checked without error.

〔Effect of the invention〕

As described above, according to the present invention, the placement positions of a plurality of originals on the document table are detected, and each of the images of the plurality of originals is divided into different images according to the detected placement positions of the plurality of originals. Since the recording is performed in the center of the recording material, images of multiple originals on the original platen can be recorded well without missing any images.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an image processing device to which the present invention can be applied, FIG. 2 is a perspective view of a document holder, FIG. 3 is a sectional view of the device shown in FIG. 1, and FIGS. 4-1 and 4-2. is a block diagram of a local network connecting the devices in Figure 1, and Figure 5 is a block diagram of a local network connecting the devices in Figure 1.
1, FIG. 6-1 is a circuit block diagram of the image processing apparatus shown in FIG. 1, FIG. 6-2 is a flowchart, and FIG. 8 and 9 are operation time charts of FIG. 6-1, FIG. 10-1, FIG. 10-2, and FIG. 1O-3. Figures 10-4 and 13 are circuit diagrams in Figure 6, Figures 11 and 12 are illustrations of CCD seam correction, and Figures 14-1 and 14-2 are main and sub-scanning diagrams. Explanatory diagrams, Figures 15-A to 15-F, Figures 15-H, 15-1
Figures 1 and 15 are explanatory diagrams showing image conversion control.
Figure 5-G is the operation time chart diagram of Figure 13, and Figure 15-
Figures J and 15-L are control flowcharts for image editing, Figures 16 and 19 are examples of image conversion, Figure 17-1 is an explanatory diagram of coordinate recognition, and Figure 17-2 is coordinate recognition. 17-3 to 17-6 are control flowcharts based on recognition, FIGS. 18-1 and 20-1 are explanatory diagrams of other examples of image conversion, and FIGS. 18-2 and 20th
Figure-2 is a flowchart. In the figure, A is the league club, and B is the printer club.

Claims (1)

[Scope of Claims] A document table on which a plurality of originals can be placed; a scanning means for scanning the plurality of documents placed on the document table; and a detection device for detecting placement positions of the plurality of documents on the document table. and a recording means for recording each of the images of the plurality of originals scanned by the scanning means at the center of a plurality of different recording materials according to the placement positions of the plurality of originals detected by the detection means. An image processing device comprising: