JPS60114078A - Picture processing device - Google Patents

Abstract

PURPOSE:To simplify operation by providing a means to divide an original picture area either into the appropriate main scan direction or into the sub-scan direction, detecting the original condition, and attaining a series of desired picture processing by one picture processing start command, concerning to a picture processing device such as a copying machine. CONSTITUTION:A figure denotes a book mode to print one or two sheets by independently reading each left page, upper or lower page, or by continuously reading the same with a book original open placed on any position of a platen 3 and with the book original placed vertically or horizontally. For the book mode, seven modes such as printing only of a left page, only of right page and of left and right pages out on a separate sheet can be considered. These seven modes are displayed in abbreviated characters on a liquid crystal part, and selected/ specified by soft keys. When the position and size of the book original are decided, the device immediately processes according to each mode. The device calculates speed based on scale factor which is keyed-in by a CPU for variable power, and calculates PLL frequency corresponding to the speed to preset the frequency in an I/O latch 58 before scanning.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to an image processing apparatus such as a copying machine that performs optical IT conversion of an image and processes it as a digital image signal.

(Prior art #I) Conventionally, image processing devices such as copying machines projected the original image directly onto a photoreceptor, so when copying the left and right sides or the top and bottom of a book onto different sheets, the book must be placed on a platen. There was a drawback that it was difficult to properly align it with the reference position above. Another disadvantage is that after copying one page, the user must switch the pages horizontally or vertically and request the copying operation again using the start key or the like, making the user's operations very complicated.

8 (Objective) The present invention has been made in view of the above points, and the object of the present invention is to eliminate the above-mentioned drawbacks, detect the condition of the original, and
An object of the present invention is to provide an image processing device capable of performing a series of desired image processing in response to a single image processing start command.

〔Example〕

FIG. 1-1 shows the appearance of a copying apparatus according to the present invention. This device is basically composed of two parts. They are reader A and printer B. The reader and printer are mechanically and functionally separated so that they can be used independently. It is recommended that connections be made only with electric cables. Reader BK is operation part A
-j is attached. Details will be described later.

Figure 1-2 shows a cross-sectional view of the structure 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 by the original cover 4. The original is illuminated by fluorescent lamp rung 2 (<), and the reflected light is reflected by mirror 5,
A lens structure is formed to emit KA light onto the surface of the COD 1 through a lens 6. The mirrors 7 and 5' move at a relative speed of 2:1.

This optical unit is moved from left to right by a DO servo motor at a constant speed without applying PLL. The moving speed is 180+nx/θθC in the forward path of irradiating the document, and 468 nx/θθC in the return path. The resolution in this sub-scanning direction is 161 lioθe/m. The sizes of originals that can be processed range from A5 to A3, and the orientation of the originals is A5, BS, M4 is vertical, and R4, A5 is horizontal. Then, the return copy of the optical unit according to the document size, the reader signal VEDlnOJCNAB], +Fi
is counted from the tip sensor (described later), and is struck when the counted value corresponds to the document size.

Next, regarding the main scanning direction, during main scanning, the maximum horizontal width of A4 paper is 297 lines due to the above-mentioned original stacking direction K. and,
In order to resolve this at 16 pel/w, 4752 (=297 x 1 (S)) bits are required as the number of bits of 00D, so in this device, 21 2688-bit COD arraynas were used and pressed to be driven in parallel. Therefore,
1611neθ/m1n, 1a am/sea f)
Conditions YO'), main scanning cycle jtl11 (Firstly, in Figures 1-2, under the reader; an overview of the printer being encountered will be explained. The image is processed by the reader and becomes bit serial. The A9 signal is input to the second laser scanning optical unit 25 of the printer.This unit consists of a semiconductor radar, a collimator lens, a rotating polygon mirror, an Fθ lens, and a tilt correction optical system.The image signal from the reader is The laser light applied to the semiconductor laser is converted into electro-optical stirrup, and the diverging laser light is made into parallel light by a collimator lens, and is irradiated onto a polyhedral mirror rotating at high speed, whereby the laser light is sensed on the body 8. The rotation speed of this polyhedral mirror is 2.600 rpm. The running width is approximately 400m, and the effective image is 29cm (A4 horizontal size).
It is 71R. Therefore, the signal frequency applied to the semiconductor laser at this time is approximately 20 NH$! (NR2), the laser beam from this unit passes through the mirror 24 to the photoreceptor 8.
is incident on the

This photoreceptor 8 includes, for example, three layers including a conductive circumferential layer, a photosensitive layer and an insulating layer.
From layer to layer. Therefore, a gross component that enables 1'9 formation is fffi arranged therein. 9 is a pre-static eliminator, 1o is a pre-static eliminator, 11 is a primary charger, 1
2 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, 18 is a registration roller, 19 is a transfer charger,
20 separation rollers, 21 conveyance guide, 22 fixing device,
23 is a tray. The speed of the photoconductor 8 and the conveyance system is the same as the forward path of the reader (18o+o+/sea).Therefore, when the reader and printer are combined to make copies, the speed is 30 A4 sheets/minute.My father, the printer is a photosensitive printer. A separating belt is used on the front side to separate the copy paper that is in close contact with the drum, but because of this, the image of the middle of the belt is blurred. The toner will smear the paper belt, which will stain subsequent sheets of paper and cut the signal.

Also, if toner adheres to the leading edge of the copy paper, when it is fixed, it will wrap around the fixing roller and cause a jam, so cut the electrical signal on the reader side to prevent the toner from adhering to the leading edge of the paper by 2 WM width. There is.

Next, FIG. 2-1.2-2 shows the main scanning direction of the reader and printer and the output image.

The reader goes from the rumor side to the front side, and the printer goes from the front side to the back side.

The copy If in this example has intelligence such as image editing, but this intelligence is done on the reader side by processing the nine symbols read with 000, and in any case at the stage of output from the reader. Also, a certain number of bits (4
752) so that a constant speed signal is output. The intelligence functions include arbitrary magnification in the range of 0.5 to 2.0 times, 1H, enlargement/reduction to a specific magnification, cropping function to extract only a specified area,
It has a movement function that moves a trimmed image to an arbitrary location on copy paper, a function that recognizes a document placed on a document table, etc. Furthermore, it has a complex function that combines these individual intelligent functions. , FIG. 3 shows specific examples of these.

(a) shows the m collection function, (1) shows the front surface of the document, (2) shows the state when copying is completed when only trimming coordinates are specified, and (3) shows 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 + specifies the movement coordinates + enlarges the arbitrary magnification (however, if the size exceeds the copy paper size, an error message will be displayed) (5) when specifying trimming coordinates + specifying moving coordinates + reducing arbitrary magnification; (6) when specifying trimming coordinates + specifying AUTO (
(7) where the base amount position was changed to match the same cassette size at a magnification in the range of 0.5 → 2 times.
ti) Shows the state when copying is completed when rimming coordinate specification + AUTO specification is performed.

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) is from a book that shows the relationship between 0(1D and the main scanning direction of the laser), and (cl) shows a method for specifying trimming coordinates.

If it is one work surrounded by a straight line, the specified order is CO ~
Do as in ■. This coordinate specification is done using the numeric keypad shown in Figure 4.
This is done using 08.

FIG. 4 is a detailed view of the operating section A-1 in FIG. 1. This operation section is broadly divided into three blocks K. Right (+1
Block 11 is a general-purpose key display section 100 found in conventional copying machines. The central block is a function key/display section 3 for the user to call up and use the copy transmission mode registered by the program.
It is 00. The block on the left can be copied or copied arbitrarily by the user.
This is a soft key display section 200 for creating a transmission function. , the general-purpose key display section 100 will be explained first.

105 is a 7-segment LF for displaying the desired number of copies per set and the number of copies cut in the middle! D Display m. 10
2 is a warning display used in conventional copying machines such as jam, out of toner, out of paper, copy interruption, etc. 104
is the copy fIk degree switching lever and the density display obtained thereby.

105: The manuscript image is only text, only photos,
This is a selection indicator for items with a mixture of text and photos, and items with section pH. 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 from 0 to 9 and C, which indicates the number of sheets on the display 103 and the soft key display fItIi 200, which indicates the numerical values during the program creation process (for example) trimming coordinates, (movement coordinates, scaling factor, destination address designation, etc.) are used. and the latter 200 (10 as confirmation key for D key entry)
There are 9 entries and keys. 110 interrupt key to interrupt multi-copy and do another multi-copy, 111 is interrupt key to cancel printer multi-copy 115 is 10
5 is a document image switching key, and 112 is a cassette stage switching key. 11iS, 112 shifts the selection from top to bottom every time the key is turned on. Function key display section 3
00, this part has a structurally removable cover. The reason is as mentioned above), one of the functions created arbitrarily in the soft key display area is registered and corresponds to one key of 502, so the function I created by myself is registered.
It is necessary to give the TIK some name and write it in the key 502. Therefore, after registering the function, the user removes this cover, writes the registered name of one of the keys 502K, and then puts the cover back on.

As described above, since six Funkshico keys 502 are prepared, the user can cancel the six-voice combination function. Shift key display area 2 (When the user creates a function in 1G, the soft key display area 202
A message asking whether or not to register will appear, so if you respond with the soft key 201, all six of the displays 306 corresponding to the six keys on the function display section 600 will blink. This means that the machine side 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 and
Write the function name on the key and put the cover back on. Since the contents registered hereafter are stored in battery-backed memory, they will not be erased even if the power switch is turned off. Key 301 is a standard mode return key.

The reader unit will be explained in detail. As shown in Figures 5 and 7, BE! AM DgTI! ! OT signal BDij
This is used to synchronize the rotation of the scanner when a printer is connected, and corresponds to the end signal of each line. (VTD transmission is an image signal), each 9-iifi element 5 per 12 inches
4752 pieces are output in 5 ns width.

However, one pixel Fi is up to three values, that is, 0.1/2.
Since it has a state of 1, in 55 ns width at 0, 27.5 na in the first half of 1/2 decreases by 27.5 ng in the second half at H, and becomes 55D8 width at 1.

This signal is mine BFJIJ if the printer is connected
, is output in synchronization with the DFITgOT signal, and in other cases (transmission to another, etc.), it is output in synchronization with an internal pseudo signal. . This is also output in synchronization with BEAM DETECT or an internal pseudo signal. VBYNO is the output of the image leading edge detection sensor 18 Figure 57b and BmAM Di! A signal output in synchronization with tTFiOT or an internal pseudo signal,
This means that image data will be output from now on. VIDI during signal! : Same as OKNABI and Hi.

The PRINT BIRT signal is a paper feeding command to the printer side. The time interval between PRTNT 5TART and VBYNO is determined by the control circuit (FIG. 9.11) in consideration of the variable magnification and the trimming area.

PRINT END This is a response signal from the printer side, which is issued when the trailing edge of the copy paper leaves the photosensitive drum and rides on the conveyor belt, indicating that the printing operation has ended. This detects the completion of copy paper separation and is issued at sequence timing. PRINTFiR
The 0ONNKOT signal is output when the PRINTER is connected, and this terminal is connected to GND on the printer side. This makes the print active section.

S+DATA, S, OLK, 080 BU day Y,
P80BUS! , is a serial signal line for making a global call (permitting transmission between the two, exchanging information such as signals, etc.) between the reader and the printer.

'S, DATA, and JOLK are 16-bit rotary call data and a clock, and all are bidirectional lines. 01110 BUSY is output when the reader side outputs data and clock to the line, and Pro B
USY is output when the printer side outputs data fetching to the above line. Therefore, these S, DAT
A, S, and line K indicate the transmission direction of OLK. Please refer to FIG. 7 for detailed timing.

Returning to FIGS. 4 and 5, the system lock of the reader will be explained. 00D in 000 reading part 501.501',
OCD clock driver, signal 1s rf from OOD
J unit, and an A/D converter that converts it into an A/D converter. The control signal to this COD is COD system, 11
The signal generator 503 generates COD m
The signal is supplied to the clock driver of the output section 501, 5 (+1').

This control signal is generated in synchronization with the horizontal synchronization signal BD from the printer. The image data converted into a 6-focus digital signal is output from the COD m capture units 501 and 501' and input to the image processing units 502 and 502'. The image processing units 502 and 502' include a sampling circuit for sampling the OOD output and controlling the amount of light from the light source by the CPU, a circuit for detecting the amount of shading of the light source and lens, and a correction circuit for the same, and a circuit for performing the AE function. A peak hold circuit detects the peak value of the light amount in each main scan, and the 6-bit double image data after the completion of shading correction is used to determine the slice level based on the peak hold value or dither pattern of the previous line or previous line. It has a conversion circuit for encoding or ternarizing. Image processing unit 502,
The image signal quantized at 502' is an image editing section 504,
504'. This image editing department 504, 504
' has two lines of buffer memory. The capacity f# for one line has a capacity that is more than twice the number of pixels per line, 4752. The reason for this is that when enlarging by 200%, each pixel data is written into the memory using twice as many sampling plates, so the amount of data doubles. Also, the reason for the buffer memory for two lines is that the memory cannot perform writing and reading at the same time, so when the Nth line data is written to the first memory IJK, the data from the second memory ti-1 is written to the buffer memory for two lines. This is to read out the image on the first line.

In addition, there are a write address counter for writing image data into this buffer memory, a read address counter for reading it, and an address selector circuit for switching address signals from these two colors.

The counter has a parallel load tag whose initial value can be preset, and the initial value is loaded by the CPU into the T10 boat. The CPU is located at the location specified by the operation panel J1! According to the information, an address value corresponding to the main scan (4th section) is preset in the counter when the sub-scan reaches one line corresponding to the trimming coordinates, thereby making it possible to obtain one copy of the document information. There is a coordinate y1 area control counter and a gate circuit to enable white masking, black masking, white frame trimming, and black frame trimming.

There is a seam detection shift register for COD's own fjl+connection six. Since the conflicting data from both sides is outputted from 504 and then outputted from K 504', it is the composition unit 505 that smoothly switches them to form one serial image data. be. The recognition unit 506 is used to perform pre-scanning of the original during the idle rotation period after the copy button is turned on, and to detect the coordinates where the original is placed at +5.A continuous white image is displayed in this area. There is a shift register for detecting 8 bits of data, a T10 port, and main/sub-scanning counters. The operation unit 507 includes a key matrix, an LID, a liquid crystal, and a liquid crystal driver.

508 is a motor for scanning the optical system, and 509 is a drive circuit for the same. 510 is a fluorescent lamp for illuminating the original; 511
is its lighting circuit. 512 is a photo sensor that detects that the optical system unit is at the home position.
Reference numeral 15 denotes a photo-tt7f for detecting that the optical system unit is in a position to irradiate the leading edge of the document. cptr section 51
Department 14U, ROM, RAM.

It consists of a battery backup circuit, a timer circuit, and a T10 interface. The CPU section 514 is an operation section!
1;07, performs sequence control of the insertion reader in response to operation commands from the operator, and at the same time controls the printer with commands. In addition, in accordance with the image processing instructions from the operation unit 507, prior to scanning the original, the father sends data to each ring counter in the artist processing unit 502, 502-image collection unit 504, 504' while scanning the original. Perform the set. Sara K
Prior to document placement, the CPU controls the light amount of the fluorescent lamp lighting device 511 based on the light amount data from the surface image processing unit, presets speed data for the Do motor rotation circuit 509 in accordance with the 1 magnification command, Image jl #l Hayabe 50
4. Collect the image stitching data from 504' and calculate the stitching amount.

Sequence control will be explained according to Figure 8 and Figure 6. As shown in Figure 8, there are three
pcs position sensor! It has +7 & -570. Looking at the front of the reader, there is an optical system home position f4 sensor (output signal OHP) on the left side, and the optical system normally stops at this position. When the reader is driven, the optical system starts scanning from left to right, and the image leading edge sensor 57b is provided at the base area of the image. Control circuit is sensor 3
7b is detected, the image data signal (VTDII!O.

OLK) and K, each main scanning cycle (54
7.2μB) data valid intercostal space (VIDKOl)
uNABIJ). Then, the control circuit starts counting the number of V'[DEOKNAB signals from the sensor 57b, and when the count value α corresponding to the point corresponding to the cassette size or magnification of the printer is reached, the A The drive signal is turned off, then switched to the temporary advance signal and inverted. On the return trip, a PRINT 5TART system 370 is installed, and when the inverted wave optical system activates this sensor, the control circuit judges whether or not the specified number of copies has been scanned, and if the number matches the specified number of copies. If not, PRrN'r 5TART to give the next paper feeding instruction to the printer.
generate a signal. Also, set T in the iX9 diagram to be equal to T? It is necessary to adjust the 1st power of 37C.

/(Magnification change) Next, we will discuss the method of enlarging/reducing the original image based on FIG. The basic idea of variable magnification is that the regular scanning direction is D.
The purpose is to make the speed of the o servo motor 57 (l) variable.The CPU measures the speed based on the magnification entered manually, and further calculates the PLL frequency corresponding to that speed.
The optical system is preset before scanning. During the return trip, a certain fixed value is set and the optical system is returned at high speed. This is done by presetting the I10 latch (1) with the value stored in the ROM K of the PU.

- Therefore, when magnifying to 2 times, the speed at the same time (180 m
m7'eθQ) Move at a speed of % with respect to K, J>it in %
/J1, it will move at 112 times the speed.

The main method is to sample a COD serial signal (after A/D conversion) that is output at a constant frequency at a clock rate that corresponds to the magnification.

For example, when expanding by 2 times, 2 times the COD clock rate.
If you sample at a rate of +9 and 1 bit of information, if you increase the data by 1 bit, the data will be reduced by 1%. If you sample at a rate of 1 clock of the COD clock rate, the original information will be 2 bits. On the other hand, data thinned out by 1 bit can be obtained. CPU
calculates this clock rate based on the input magnification and applies it to the I10 latch (2) 50 before starting sub-scanning.

As mentioned above, COD has a 2628-bit structure, of which there are 36 dummy bits and 2 valid bits.
That's 592 bits. The driving frequency is 7.569 NH, and the signal line is φ
, clock line 55.

The clock for scaling is the same source as φ, and the frequency oscillated by vCO (9) based on the value of ■10latte (2) is synchronized with PLL 4 B to form a variable frequency as φ. are doing. The 2592-bit analog signal output from the cap is amplified by the AMP42 and applied to the AGO (automatic gain control circuit). Therefore, the circuit detects the white level and clamps the white level so that the relative change from that point is applied to the A/D converter 44K. And the output of AGO is IVD
It is converted into 6-bit parallel pits which are binary values to be compared. On the other hand, the dither ROM 54 has 8 in the main scanning direction.
The bit intervals and the sub-scanning direction are also set so that the same weighting code (6 bits) is output at 8-bit intervals, and 32 types of weighting codes are allocated within this 8×8=64-bit matrix. Therefore, by addressing this dither ROλ 454 using a 3-bit main scanning counter 51 and a 6-bit t, 91 scanning counter 52, a weight code of & is output.

Also, 1 go of the squirt code set in this 8×8 ↓
There are several sets of W, and consideration has been given to changing the reproducibility of the halftone image depending on the combination. The selection of this combination is performed by T10 launch (5) 53, and the presera to this latch) ij CPU 1.9
This is done before the start of one scan.

This main scanning counter 51 is driven by a clock with variable frequency φ depending on the magnification, and the sub-scanning counter 521
7i Bll! AM D[HTHiC! Driven by T signal. The 6-bit weighting code from the dither ROM 54 and the A/D converted 6-bit code are compared by a comparator 47 to obtain a binarized image signal that can reproduce a serial halftone. .

Next is the circuit 45. Since the conversion time by A/D conversion differs depending on each bit, it is latched again at φ1 for synchronization. Father, as a matter of course, the address counter of the shift memory 57-1, 57-2 is exposed by the clock φ. With the above, shift memory 57-1
．． 57-2 contains 2592 focus inputs when the image is magnified by 1, 1296 bits when the image is magnified by %, and 5184 bits when the image is magnified by 2.

The speed of the sub-scanning Do motor 376 is determined by the CPU.The value preset in 58 is vao59.
K is input, and the resulting root frequency is the source oscillation and PLL
60 and is applied to the servo circuit 61, K
Therefore, it is controlled.

FIG. 11 shows a circuit diagram related to the shift memory. The shift memory (1) is a static memory into which 0ODi image data is stored. /ft.

Memory (2) is a static memory into which qaDz image data is stored. Write address counter 63
is the address counter when writing shift memo January 1) and (2) K data. The read address counter (1) is an address counter when reading one piece of data from the shift memory (1), and the read address counter (2) is used when reading one piece of data from the shift memory (1). ) is the address counter when reading from. Address selector (1) is write.

The address selector (2) is used to select either the address signal of the address counter 63 or the address signal of the read address counter (1) to address the shift memo (1). Address signal of address counter 65 and read address signal
This is for selecting one of the addresses 4M of the counter (2) and addressing the shift memory (2). The shift register 74 is a register for taking out the image data of the OCD I system in 8 bits from the lowest order, and the shift register 76 takes out the 8 bits from the highest order of the 00D2 system.
This is a register for extracting image data for each focus. F', /F 731d VTDEOJONABLFi
The F/F is set at the rising edge of the signal and reset at the ripple carry of the write address counter 630. It is used to control the period of input to the shift register 74. F/F 7s is VT DI. ! i.

Set at the rising edge of ff1NABLE, and reset at the ripple carry of the read address counter (2).
/F is the opening key input to the shift register 76.

The purpose is to control the -The T10 port 72 is [10] for the CPU to read and confirm how far it has counted when the write address counter 65 is up-counted. The I10 registers 66 to 69 are registers used by the OPU to give preset values to the write address counter 63 and read address counters 64 and 6'5, respectively. The I10 register 68 outputs an OPU to the write address counter 63 and read address counter 65 to determine whether it is an up count or a down count.
is for specifying, and address, selector 70, 7
1 for the CPU to specify which counter value to select, a signal for determining whether to run the read address counter (2) by the write clock or the read clock, and a test signal for performing the connection. This is for the CPU to control so that one line of image data is given from the 00D driver circuit to the shift memory circuit by giving .

FIG. 410 illustrates a method of image editing in which cropping is performed at an arbitrary magnification based on an arbitrary point. Figure A is the original Japanese plane, Figure B is an enlarged view, and Figure C is a shift diagram. The basic method of image editing is (1) Calculating the coordinate values of the editing area from the coordinate values of the trimming area, the moving coordinate values, and the magnification (Figure A-0). The CPU determines the minimum (from the manuscript placement I? standard) of the coordinate values of the trimming Bn area, the coordinate value (1) in the main scanning direction, and the 4-vote value (y) in the sub-scanning direction. ShiX. r 7o. Part 1
Votes are entered by key in units of time.

Also, since there are 16 lines/stop, the number of lines Ln for one vote in the To seat is (y, XL6). again. Coordinates of Qing 111 T.

becomes (XoX16). (Figure A), ① The OPU determines the minimum value in the X and Y directions from the edited area coordinate values and sets it as x+*71 (Figure C). (2) Based on x0, the magnification, and X, determine the preset value of the readout start address in the read address counter read from the shift memory (calculation of address A3 in Figure 0). This point will be explained in detail using the fIIJl 0-1 diagram. This should be enlarged twice using shift memory ((
There are 4752×2) bits. When simply enlarged, the information corruption in the memory becomes (x0 x magnification x 16) bits. father,
The address A1 of the shift memory corresponding to the magnification of the xo coordinate is (A, -T,). In addition, A□ is the start address of the memory and the connection correction I\? Stored in RAM. By the way, the number of lines L2, which is different from the magnification of yos4m, is (LoX magnification). Next, in order to output this enlarged image from the xIK shift point, read start address A of the shift memory.
When we calculate s, it becomes A, + T. Commerce and industry.

゛ is the information sickness according to the shift coordinates X, K, (x, X16
). By the way, the line marked 711ft'? l/L,
is y, x16.

Next, based on ■y, magnification and y, the above-mentioned PRTNTST
Determine the time interval from the generation of the ART (paper feed) signal to the start of the optical system or the generation of VSYNK (
Calculation of Ls). That is, L corresponds to it. This difference is the PF of →-ra, 19TART signal or VJYNK
All signals are standard, I'3 x main scanning cycles (547, 2
Put out μ's information. Also-Ls (7) lli is 5TART
The signal or VSYNK signal is output later than the upper H1'. t'
l: @5 to gate only part of the image data in the main scanning direction in order to output 1ft only to the Hayabusa area.
TART BITooUNTIIiR and 11ND BE
T0OUNTF! Provide R. This corresponds to 80 and 81 in Figure 11, respectively. This presets the count data for the gate via Ilo. It is set by the count data of the counter 80 from the flip-flop 821, and is reset at 81. The operation is shown in Figure 10-0.

■Excellence in the sub-scanning direction from the coordinate values and magnification of the trimming area.
Calculate the number of lines between the points (figures , n, g, and F).

If you count VTDIOFNABIJ with this amount of CPU, K will do it. 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 (lJ=M) (times *) It is.

■5TA at the change point from the X-direction Maza Keyaki value after editing
RT BYT CoσNTKR and END BYT 0O
Calculate the UNTFiR preset value and set it as shown in Figure 10-H.

Note that there is no trimming and the image is output on the entire surface.
IT 0OUHTKR and mNDBT, T 00υNTE
Use R to create the leading margin and dividing margin. At initialization, there are four on top, but after counting 2mm x 16 lines - 36 lines at the tip margin, 5 TART BIT 0011NT11! R to 7.5
Set lmx: 16 bits = 120 bits.

- Figure d12-1 shows a state in which a document is placed on the original plate glass 6 of reader A. Basically, the placement position is determined as described above, but the tn < diagonal position in the figure is also added.

In this case, when the main scanning direction is X and the sub-scanning direction is Y from a certain position 'XS, P on the document table 3, there are four sitting images (X+
,y, ) +(Xts”t L(Xs r in
) r (X4 v Y4) is detected by pre-scanning the optical system K during the pre-rotation operation of the printer. This allows you to determine the thickness and rank of the manuscript. From this K, the scanner scan stroke during multi-copying can be determined (9), and a desired cassette can be selected. The document cover 4 (FIGS. 1-2) is mirror-finished so that both image data t outside the +q area of the document always match the black data. In order to perform pre-scanning over the entire mineral 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 logic for detecting the coordinates is shown in the circuit diagram in Figure c12-2. The image data V[IMGO converted into #)2f+ff by the pre-scanning is shifted and input into the register 301 in about 8 bits. , at the time when the 8-bit input is completed, the gate circuit 502 converts all the 8-bit data to white Wfa <(
If it is fes, signal line 3 is checked.
Outputs 1 to . After starting scanning the original, F'/'F3Q4 is set when the first 8-bit white is seen. This F/
It is reset in advance by FkeV8YNO (image leading edge signal). After that, set [7 and release] until the next VEIYNO comes. At the time the F/F 504 is set, the latch F/F 3051c displays the main scanning counter 351 (
The value of the main scanning counter 51 or a dedicated counter in FIG. 9 is loaded. This is the direct button for the vote. Also latch 3
06 is loaded with the value of the sub-scanning counter 550C'$9 (also the sub-scanning counter 52 or cane-only counter) at that time. This becomes the Y coordinate value. Therefore p, B,.

Yl) is round.

Also, the value from the 7JfK main scan, where 1 is output to the signal 305, is loaded into the latch 507KC'-. The value of benevolence is redemption (next 8
By the time the bit enters the shift register 301, the clutch 30
8 is stored. When the value from the main scan when the first 8 bits of white are cleared is loaded into the latch 308, it is compared in magnitude with the data in the latch 310 (which has been set to 0'' at the VBXNO5f1 point) by the comparator 309. If the data in latch 508 is larger, the data in latch 308, that is, the data in launch 307, will be latched 101.
C is loaded. At this time, the value of the sub-scanning counter is loaded into the latch 311. This operation is processed until the next 8 bits enter shift register 501. If the data of the latch 50B and the latch 510 are applied to the entire image area in this way, the maximum value in the X direction of the original area remains in the launch 310, and the order in the Y direction at this time remains in the latch 311, which becomes K. This is the P* (xt + Yy) locus.

Horizontal synchronization signal H8M is set at the F/F when 8-bit white first appears for each main scanning line of F/F112.
It is reset with NO, sets the first 8 bits to white, and holds it until the next H8YNO.When the next F/F 512 is set, the value of the main scanning counter is set in the latch 315, and the value of the main scanning counter is set in the latch 315 until the next H8YNO. Load into.

Then, the two signals 315 and comparator '516 compare the magnitude. Maxnil in the X direction is preset in the latch 315 at the time of occurrence of YNO on V day. Moshi Lunch 3
If the data of 15 is greater than the data of latch 314, signal 517 becomes active and the data of clutch 314, that is, 2-touch 313, is loaded into latch 515. This operation is performed between lIF5'1NO-'TlBYMO.

If the above comparison operation is performed for the entire image area, the result will be 3.
15 remains the minimum value of the document coordinates in the X direction.

This is X. Also, when signal line 317 outputs, the value from the sub-scan is loaded into latch 31B. This becomes YIl.

Latches 319 and 620 are loaded with the current main scanning counter value and sub-scanning counter value 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 is K. This is (K,,Y,
) with more than eight latches (6, 11, 20, 18
, 5, 10, 15° 19) are connected to the apu pass line BUS, and l'lpu reads this data at the end of the previous scan. Of these data, the area xt+x&r''IrY4 is determined as the document area, and the above-mentioned trimming process is performed when scanning the document for printing.In other words, the coordinate components of the document X! + xM * YI t
By Y4, the coordinates of the dotted rectangle extending i+R from the document position P+-Pa can be recognized, and it can therefore be seen that at least a sheet of a size corresponding to the dotted line is required.

The printer IIIl uses the registration roller 18 so that the leading edge of the paper and the coordinate Y are synchronized! m paper control is performed. In the standard mode, the signal VSYNO from the league (the above-mentioned image sensor 5
7t) and the same M), but in this case, as in the case of the previous I water trimming shift, this signal and the signal from the image tip sensor 571) are combined i4'l K Y,
This is done by providing a period of time corresponding to Since each cassette is loaded based on the position f6 corresponding to the standard position ili S P side of the league,
Just stop shifting the image output. This is performed by presetting the read address counter in the same way as in the trimming shift described above. The above control modes are selected by soft keys corresponding to the display, but they can also be selected by providing a dedicated key and inputting it.

If you enter the auto command mentioned above, you can print this part by changing the size to fit the sheet in the cassette. This is based on the printer's selected cassette size signal. is sent to the league via the DAT input line, so this signal is used for trimming and shifting in accordance with the procedure described above in Figures 10-A to 10-10.

A desired copy can be obtained by sequentially performing scaling. In other words, auto adjusts the X direction of the document with respect to the sizes Px and Py of the cassette sheet in the X direction and Y direction, as shown in FIG.
Calculate the ratios mx and my of the sizes lx and Δy in the Y direction, respectively. Then, the smaller ratio is set in RAMK as a common magnification for X and Y, and the above-mentioned magnification change procedure is performed.

Therefore, an auto-magnification copy can be obtained with one direction of the sheet at the reference pressure. Auto 2 companies, as shown in Figure 12-4, calculate the ratio of the document's X and Y directions to the sheet's X and Y directions,
The culture rate in the X direction and the magnification in the Y direction are each set independently.

Therefore, the Shinito t'FK origin 19 can be copied. Auto 1 and 2 can be similarly executed in auto magnification by specifying trimming coordinates.

・For 3 to Ljil, the above-mentioned tri 2 ring, magnification change, and shift hand ((■ is shown in the flowchart. Only 1 for 4 cases with shift)
10-JM), depending on the case where there is no shift (movement) 10
- As shown in the diagram, xIIZ9 →
By controlling the start bit counter and end bit counter shown in the figure, the area outside the trimming can be made white. In this case, the area that can be trimmed is one area surrounded by straight lines, so if you designate an area divided into rectangles in the y-axis direction by specifying two points on the diagonal line in the xy position, it will be more convenient than K. Set 3 minutes All to MAX. Enter the unit in combat.

In other words, (Xn7n +x+1'l)+("t7t +l
Cs7g)+(X4741X67g) is sequentially performed. This is the same when shifting to manual or automatic, and converting the coordinates as described above to VTDI! Controls io output.

In Fig. 11, 90.91 is an exclusive OR gate for determining the image sensitivity area, and OF is a signal that controls it. When it is 1, the inside of the area determined by the BT counter and IN counter is masked, and the outside is set as the output image bond. , when it is 0, the inside of the area is bound in the output image and the outside of 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 1, it is black; When it is 0, white is output. 95 is gate 92.95
VTDJ the image output from K! ! 94 is an exclusive OR gate that controls black and white inversion of image data; TN is a signal that controls it; when it is 1, it is the original image; when it is 0, it is inverted. Each signal is masked by the CPU using soft keys.
It determines that there is a white, black, or negative input and outputs it.

The output of gate 92FiF! becomes 0. The output of the gate 92 remains active until the IJ counter increases, that is, until Q becomes 0. The toes are smeared. Instead, the output of the gate 91 is ll1j, so if the black/white signal 13B is 1, is it a gate? 5 digits 1, therefore the image output gate 95 digits 1
will continue to be output. Tsumasaki will be masked. On the contrary, OFTEJ
, BB=Q, white masking is performed. , i90F=0
Then, the outputs of gates 90 and 91 will each be 1.0 during that time, so if BB = 1, the area outside the trimming will be black, 0IF
When F=O, [3B≠0, the area outside the trimming becomes white.

13th -1.1! Figure S-2 is an explanatory diagram for printing (centering) by moving a small original or a trimmed version of the original to the approximate center of the sheet, and a control flowchart by the CPU. That is, as described above, the maximum and minimum values of the trimming coordinates of the oblique persimmon part @ (TXM
AX, TYMAX).

(TKVIN, TY11!IN) and set (Z). It can also be set for the aforementioned coordinate acquisition.

Next, determine the matching magnification in the X and Y directions.

7pa This is a subroutine Oh) By the AT2 method! 7M
X.

Maru as MY (2). In order to select an arbitrary magnification in the X and Y directions, MX and MY can be selected using the numeric keypad as described above, or it can also be determined using the subroutine kTt. Next is the X direction of the sheet.

Set the length in the Y direction as PS2X and P82Y in RAM K. This is determined by the data from the printer (
5). Using these data, the movement coordinate TXJTYM for centering is determined (4). The length of the trimming width in the X direction of the pick is subtracted from the length of the sheet and the result is % to obtain the X direction coordinate TXM. Similarly, TYM in the X direction is rounded. It is considered valid only if TXM and TYM are positive, and if they are negative, it will be issued. After that, the method shown in the above-mentioned Nos. 10-A to 10- is followed.

Figures 14-1 to 14-3 show RK at an arbitrary position on platen 3.
An explanatory diagram and control flow factor of the book mode in which the left, left page, top, and worker are read independently or Q-distance while opening a book manuscript of 9 squares in length and width, and printed on one or two sheets. It is. Now, for a book document placed on a platen, there are two cases in which the center binding line is parallel to the sub-scanning direction as shown by the dotted line (-) in Fig.
) may be parallel to the main scanning direction, as shown by the dotted line. , 1. l'J, f &l'J￥14-1 In figure (a), t above the dotted line (binding) (6 minutes on the bottom page, 1 on the bottom
The urabu is called the worker, and in Figure 14-1 ft, 1, the part to the left of the dotted line (seam) is called the left hand, and the part to the right is called the right hand.

The following seven modes are possible in the book mode: i+11.

(Q) Left side only printed (b) Right side a only Flint toy C1 left and right pages printed on separate sheets (d,) Top q
Print only (θ) Print only the bottom 100 (f)) Print the top and bottom 100 on separate sheets (9) Print both the left and right pages or the top 100 on one sheet , and four selections are specified using the soft key 201, and (11fa) to (g) are selected for display as separate modes. (2) fa) and (d), (b) and (
θ), (c) and (f) are displayed and selected as the same mode.

(or (a3 and (e), (1j) and (a), (fil and (f) are in the same mode) are two possible options.

1) How to specify mode display as shown in Figure 14-2
In both cases (2) and 2), when the copy start key is pressed after setting the mode, an auxiliary scan is performed to detect the document coordinates (step 1), and the position of the book document + f′t, (X2
1 Yl) and size (X3-X2, X4-Yj)
Calculate step 2), copy paper size PS-x,
Set PS-y (step 3).

If the mode specification method is (1), as soon as the position and size of the book document are known,
), perform the following processing.

When the mode specification method is (2), the original set as described below will be
After determining whether the orientation is as shown in FIG. 1(b), the shell position is determined (steps 12 to 26).

(-) If only the left page is printed, first trim PF
, Wandering XMiN wo XZ XMAX f X5 , Y
MiN to 71°YMAX to the center of the book (7) l' seat U
(71+74) (Step 25).

Next, the anti-transition path of the optical system is set to YMAK by adding a slight margin numerator to inversion f and one displacement P (step 26).

The extracted data is set in RAM. According to the coordinates determined by K in this manner, the image of the left key of the first (a-1tub) book manuscript can be printed at the center of the sheet.

(l]) When printing only the right page, XMiN, XMA
X is (!Same as step 13, YMiN is center of book +7) Y::% (71-1-74)
Set xo, s, 7MAX to y4 (step 17), then set the stage after the above-mentioned centering (step 25) and the optical system counterattack point p (step 26).

(C) Printing the left and right images on separate sheets (step 20) is shown in the upper 4 (a) case of only the left shoulder and (b)
Data is set by sequentially performing the case of only the right page. That is, the data for two cycles is stored in steps 21-23 for the first page, and set and stored in steps 24-26 for the second page.

(If you are printing only on top, use the trimming seat fi.
YMiN is yl, 7MAl is 74. Set XMiN to x2 and SaraK XMAI to the center of the book (y2+x3)X
Dredging with a setting of 0.5% (step 12% step 15) and the above-mentioned centering (step 25) are performed. As the optical system and dislocation K P, some margin molecules are added to yMAX (step 26), and these data are set in the RAM. According to the coordinates determined in this way, the image of the upper half from the seam in FIG. 14-1(a) is printed in the center of the sheet.

Kll Trimming coordinates when printing only for workers: 7M
1N and 7MAl as in (d) ty) -t(
XL41N at the book binding (X2+13) x Q, s
Step 12. Set XMAJC to x3. Step 17), Front+IR centering (Step 25) Optical system inversion position; same as map p#'1(a) (Step 2
6).

(f) Printing the upper and lower pages on separate sheets1
・Case is the case of the tree on the top page of el mentioned above and (θ) 4 of only the workers
The f-tasets are set by sequentially performing the alignment. On the same day, data for 2 days above and below (1 page ρ data is in steps 21 to 25. 2nd page data is in step 24)
~Data Seraton at 26? Commemorate.

(g) Print both left and right or top and bottom on one sheet. Narai is similar to the copy of yMiNf yl
, yMAX f y4 , KMlN wo17 , KM
AX f
adds the margin numerator of yMAK Ic (step 2
6) Set these data to FOAM. After the data necessary for printing has been set in the RAM, the main scan is started and printing is performed.

In the thick scan, according to the preset contents of the RAM, the address counter is preset controlled and the scanner sequence 1! If you perform IPI and print, then imitate mode (C), i.e., leave the book original as shown in Figure 14-1 (b), and print two pages consecutively, print the left page for the first time. Scan [However, during the second scan of the right print, the preset values for the read address counter, start pit counter, and end bit counter that decoy the reading of Ryoshin data from the shift memory are the same for the second time 1jY4+
r and nashi are different.

On the other hand, in mode (f), that is, when placing a book manuscript and printing two consecutive pages, including the bottom page and the worker, as shown in Figure 14-1 (a), both the first scanning time and the second scanning time are The inversion positions 11 of the optical system are equal to Y4-1-r, and conversely, the presets +iI to the various counters are different.

The above-described operation allows automatic magnification change and manual magnification change immediately, and it is also possible to arbitrarily set the outside of the effective 1ifii image area of the document to a white width. In each of the above modes, information such as centering can be used to adjust the start timing of the scanner or the register timing of sheet feeding on the front/back side.
By delaying or stiffening depending on It,
The image is regenerated in the proper position of the arm. The manuscript! You can also manually enter the coordinates using the numeric keypad or size keys.

Also, the main scanning direction is automatically detected, but is it determined manually? +q
2 simply performs centering. In this way, the right and left pages of the book can be properly printed in real time without moving the book, and the copy operation can be omitted to make it G4. It can be printed on the center of the father's sheet (I), and redundant information can be cut out in one piece, so the copy quality can be improved by 4 sheets.Printed on IeS ■9 Light Ryokan by Father's League. The copying speed can be extremely high even though all steps have been completed for each section.Next, we will explain about the thick book in the case of mode specification method (2). - to do.

The length of the selected sheet size in the main scanning direction is ps-x
, the length in the sub-scanning direction is p6-x. On the other hand, the size of the detected book document is calculated by ti11 scanning direction (-Yl) and left and right page 4-71 size (X5-X2.-) which is divided into two parallel to the main scanning direction. Next, the vertical and horizontal ratio MyX (y4-y
l) - between (1) 1<R<4 R(II)R<j<
There is a relationship between 4 R (I [) R + 4 R + 1 3+ ~ Shi.

, (this is omitted as it cannot be the same size as Dada-to size). Due to the correlation between the conditions (1), (II), (11) and (1) and (2) above, the book manuscript on the platen is 14-1
It is determined in which direction f51 is being applied, N or 14-1b. The center is shown at 14-51flK. (Step 7
．． 8,9.10.11”).

(1) 1 < R < 4 Even if we assume that R = 1, the 1 case of H is 4R = 4, which is odd, but the vertical-to-height ratio of the sheet size and the large fi < 5%, which is not common, so we prefer R. It is judged that the power is upper and lower.

Saki K (till R<4 If R<1, even if we assume 4R=1, R=!1,25, and for the same reason as above 9, it is determined to be 4R, that is, the left and right pages.

'nlDetermine. This is a diagram 1 in which the long space of the original manuscript is output in the longitudinal direction of the sheet and the short direction is output in the short direction.

The f11 determination method described above is based on the sheet size selected by the operator;
g = Q book 1 Kyowa size (X5-X2) and (
The method of comparing y4-yl) and dividing the longer one into two is easy and effective for the VC light of one board @ (A, B series Lfl! TTKR series), and it is also effective for the selection of the sheet's own WIh. -It is also effective in selection mode.

A specific example of the above method is given below. 6 pages on the left and right of a paperback book of approximately 150 gates x 105 squares with a diagonal cap
1) If there are only 4 horizontal feed cassettes in the printer, the operator must position the paperback on the platen so that the seams are parallel to the main scanning direction. With an IR device, all you have to do is set the mode and press the copy start key. In this case, the automatically detected Saler size is X5-X2': 150F+1!74-71
Since it is a job 210 seaweed, in the case of equal magnification or automatic magnification, the above-mentioned R',
It becomes 0.564R-1,43.

St A 4'/-) Horizontal ia 9 LDtQ combination P
Since s-X=297 (tight m) and ps-y21o (sw), it becomes P8-x/Pa-yxl, 41, which is determined to be the left and right pages according to IK in Figure 4i4-1, and the desired print can be obtained. If it is the same size, the image will be placed in the center of the sheet due to the centering of the water, and no black frame will appear around it, and if it is automatically magnified, it will be enlarged to 200 to fill the entire A4 sheet.

Also, if the printer only has a 44-feed cassette, the operator can place paperbacks by adding 1ρ to an arbitrary position IW on the platen so that the binding line is parallel to the sub-travel 4f:h direction, R = 0.7, 4R. =2.8, PH-VPH-y=
0.7 and 9. This time, it was determined that it was Josada, and the original Glint was still found.

(Effects) As described in detail above, the present invention makes it possible to provide an image processing device that can detect the state of a document and issue a single image processing start command [Thus, it is possible to provide an image processing device that can perform a series of desired image processing. .

[Brief explanation of drawings]

Fig. 1-1 is a diagram showing the external appearance of the 1e copying device.
Figure 1 is a sectional view of the structure of the league printer. Figures 2-1 and 2-2 are diagrams showing the league, the main scanning direction of the printer, and the output image. FIG. 43 is a diagram showing nine composite orange functions combining intelligent machines. ", 4 iA is a diagram showing the W'f-fi publication of the operation section. Figure 15 is a system block diagram of Daniknit. ・1℃ Figure 6 and Figure 7 are the connector interface 64
It is a figure which shows the timing of ff-. Figure 8 of the 7th edition shows a sensor on the League's scanning optical system. -119 Nijii l-1, I@%ii It is a diagram showing a method of enlarging/reducing the groan. gln-AI・4〜゛IIiia-Fl! Ii, t) A diagram showing the state of rimming. 2+¥10-0 is a diagram showing count data. The iπ10-1 diagram is a diagram showing preset values of the start bit counter and the end bit counter. FIG. 10-T is a diagram showing points of successive start addresses. Figures 10-J+ and 7 (1o-x and 10-L are flowcharts showing the trimming, scaling, and shifting steps 14. Figure 11 is a diagram showing a circuit related to the shift memory. Figure 12-1 is a diagram showing how the original is being replaced on the original table glass 3. Figure 12-2 is a diagram showing the coordinate detection circuit diagram. The figure is an a-chart for detecting the size ratio of cassettes and originals. FIG. 12-4 is a flowchart for detecting the size ratio of the cassette and original in the X and Y directions. Figure p315-1 and figure 15-2 are centering Yumei [zo] 1, 1' turn 14-11 so 1. 14-2 Do 1. Hall 14-6
The figure is an explanatory diagram of Punku mode. 514 ・、、、(!'Q11 A...Reader B・6.・Printer 101...Start key No. 1-1 Haze No. 1Z-4 Warm No. 73-7 Main scan') 5 directions X

Claims (1)

[Scope of Claims] (1) It has means for dividing the original 47-island image area in the main scanning direction or the sub-scanning direction as appropriate, and outputs the desired image of the image area divided by the means with a single output request. An image processing device characterized by outputting in this mode. Q) The image processing apparatus according to item 1, wherein when the document has a binding margin, the means for dividing the IJX image area into sections with the margin as a boundary. (3) The image processing device R according to item 1, wherein the mode includes image processing for each of the divided regions and image processing for the plurality of regions in all regions.