JPS60239721A - Copying device - Google Patents

Abstract

PURPOSE:To automate copying by operating the size of a copy paper on a basis of an orginal size, which is obtained from an original detecting means, and a magnification when a picture area and the magnification are designated and displaying the copy paper size and a cassette size. CONSTITUTION:The surface of an original pressing plate 133 in the side facing an original platen 132 is paint black, and a CCD sensor 140 forms the reflected optical image from an original 131 through a lens 138 and reads the variable density of the picture. The output from the CCD sensor 140 is amplified by an amplifier 141 and is converted to a digital value by an A/D converter 142, and this digital value is compared with a standard value, and the variance due to the quantity of light and picture elements is corrected by a correcting circuit 143, and the picture is binarized to white or black by a binarization circuit 144. The reflected optical image is read on lines along the Y axis by picture elements of the CCD sensor 140, and scanning is performed in the direction of the X axis, and coordinates of the position of the first change from black to white and the position of the last change from white to black on every line in the Y axis direction are obtained in accordance with the binary signal. On a basis of these position detection signals, a controller for correct copies is operated.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a copying device, and more particularly to a copying device that can display and select a cassette by calculating the size of copy paper by specifying a magnification for an image area on a document. - to do. [Prior Art] FIG. 1 shows an example of a copying apparatus capable of copying onto ordinary paper using a photosensitive drum, in which 1 is a seamless photosensitive member whose surface is made of a photoconductive material, and is indicated by an arrow. This is a photosensitive drum that can be rotated in any direction. During one rotation of the photosensitive drum 1, the photosensitive member is first neutralized by the exposure lamp 2, then corona charged by the primary charger 3, and when it has rotated to position 4, it is imagewise exposed and statically charged. A latent image is formed. After that, in the developing device 5, either the developing roller 5A or 5B is selected according to an instruction to visually develop the toner, and then the cassette GA or 5B is visually developed.
The transfer charger 8 transfers the image onto the copy sheet 312 that is fed from the printer B onto the drum 1 at appropriate timing via the registration rollers 7. In addition, 9A and 8B
is a paper feed roller that feeds paper 312 from the cassettes 6A and 6B. After the transfer, the copy paper 312 is separated from the drum 1 by the separation charger 10, guided by the conveyor belt 11 to the fixing roller 12, where it is thermally fixed by pressure heating.
The sheet is discharged onto a tray 15 via rollers 13 and further through discharge rollers 14. On the other hand, after the transfer paper is separated from the photosensitive drum 1 by the separation charger 10, the toner is cleaned by a brush or the like in the toner collector 16, and the charge is removed by the pre-exposure rub 2 again, and the next copy is made. Reference numeral 17 denotes a flapper interposed between the roller 13 and the paper ejection roller 14. In the case of normal transfer, the copy paper 312 is moved toward the tray 15 by setting the flapper +7 to the position shown by the dotted line. However, in the case of multiple transfer, the flapper 17 is moved to the position shown by the solid line, and the paper is temporarily stored in the multiple transfer tray 18. From there, the paper is guided to the registration roller rough by the paper feed roller 18, and then the paper is guided to the registration roller rough again by the paper feed roller 18. The image is guided between the transfer position on the drum l, that is, the transfer charger 8, and the transfer and fixing steps are repeated. In addition, 2
o is a blank exposure device for preventing unnecessary toner from adhering to the drum 1, and has a subdivided structure. Next, a device for optically reading an image from a document and a device for irradiating the image onto the drum 1 will be described. Reference numeral 31 denotes an original for copying placed on a glass original platen 32, and 33 represents an original pressing plate that covers the upper surface of the original 31. The light reflected from the original 31 can be effectively obtained by the original pressure plate 33. Reference numeral 34 designates an illumination lamp that is integrally constructed with the first scanning mirror 35 and operates in the scanning direction.Furthermore, the second reflection mirror 36 is integrated with a third reflection mirror 37, and these mirrors 36 and 37 are integrated with the first scanning mirror 35. Since the scanning mirror 35 and the like are configured to be moved at half the scanning speed, the optical path length until reaching the fixed lenses 38 and 38 is always kept constant during scanning. 40 is a line sensor composed of a COD memory that inputs a reflected light image on the original 31 obtained through a lens 31; at the same time, the reflected light image is reflected by a fourth reflecting mirror 41 through a lens 39; Latent image formation position 4 on photosensitive drum l
is projected on. Further, 42 is a standard white board used to correct variations in the amount of light and pixels when reading an image by the CCD sensor 40, and 43 is a standard black board for detecting the edge of the original 31. However, conventional copying devices configured in this manner not only do not have the function of copying a desired image area on a document to a desired copying area on copy paper, but also do not have the function of detecting the size of the document or freely copying it. There is no function to change the copying magnification; therefore, when the magnification is set for the image area on the document, the copy paper size and cassette size are automatically selected accordingly. [Objective 1] In view of the above problems, an object of the present invention is to provide a document detecting means capable of detecting the size of a document, a means for specifying an image area on the document, and a means for specifying a magnification for copying. and means for displaying copy paper size and cassette size, and when an image area is specified by the image area specifying means and a magnification is specified by the magnification specifying means, the original size and the above magnification obtained from the document detecting means are displayed. It is an object of the present invention to provide a copying apparatus capable of calculating the size of a copy paper based on the above, and displaying the size of the copy paper and the cassette size by a display means. [Example] The present invention will be described in detail below based on the drawings. Note that in the following description of parts having the same functions as those in FIG. 1, reference will be made to FIG. 1, and the same reference numerals will be used. FIG. 2 shows an example of the configuration of the document coordinate detection device according to the present invention. In this example, the surface of the document pressure plate 133 on the side facing the document table 132 is made of a color with low reflectance, for example, black. Also,
A CCD sensor 140 transmits a reflected light image from a document 131 held between a document table 132 and a pressure plate 133 to a lens 138.
In this example, the output from the CCD sensor 140 is sent to the amplifier 1.
41, and further converted into a digital value by an A/D converter 142. Then, this digital value is compared with the standard value read from the standard white board 42 shown in FIG.
Binarizes the image into white or black. Now, as shown in FIG. 3, the original 131 is placed on the original platen
32, the CCD
The reflected light image is read by the pixels of the sensor 140 along the Y-axis, and optical scanning is performed in the X-axis direction, so that each Y-axis line starts from black using the above-mentioned binary signal. You can see the coordinates of the position where it turned white and the coordinates of the position where it last changed from white to black. That is, the shaded area in FIG.
This is a portion where the reflected light is black because the surface of the original pressure plate 13'3 (not shown) covered with the upper surface is black or the like. Therefore, the B-W detection circuit 145 shown in FIG.
Then, based on the binary signal from the binarization circuit 144, detect the Y coordinate of the position where black first changes to white on the Y axis line and the X coordinate of that line, and calculate these X and Y coordinate components. As a position detection signal, the B-W maximum value detection circuit 14
8 and B-W minimum value detection circuit! 47. Now, when scanning in the X-axis direction is performed, if we trace the trajectory of the position where the color changes from black to white in FIG. After that, the Y coordinate of the change position gradually decreases and reaches the minimum value Y at the corner point 131B. Then, the Y coordinate increases and reaches the maximum value Y, . Therefore, the maximum value detection circuit 14B detects the same point 131(: and generates the detection signal (X, , Y-h), and the minimum value detection circuit 147 detects the corner point 131B and generates the detection signal (
X3, Y, 1-h) Detects the X, Y coordinates of the position where the color changes from white to black, and calculates these X, Y coordinates.
The coordinate components are output as position detection signals to the W-8 maximum value detection circuit 148 and the W-B minimum value detection circuit 150. Therefore, these detection circuits 148 and 150 detect t± corner points 1310 and 131A, respectively, and output the detection signal (
X7, YME-we) Oyobi (X4, YM
IN%) can be output by CPU &: small amount. In this way, it is possible to cause the CPU (not shown) to perform various calculations as will be described later based on these position detection signals, and to operate the control device for obtaining proper copies. Next, with reference to FIGS. 4 and 5, a method of calculating the amount of displacement performed for the above-mentioned positional displacement of the original 131 will be explained. FIG. 4 shows a case where the original 131 is placed diagonally in the same state as in FIG.
indicates the normal reference position in which it should be placed. First, the controller determines that the document is placed diagonally when the position coordinates of Yl, . . . and Y, bond are different. Therefore, the deviation angle θ1 at this time is tan'('/s
information - Y + w, h/XI -
This can be determined by the fact that 1(Y+mw-Ym, ev/XI X3) becomes a negative value. Further, the example in FIG. 5 shows a case where the original 131 is placed offset in the counterclockwise direction with the corner point 131B as the center. In this case, the deviation angle θ2 is tan' (YMIN, vN-
Y+w, N/XI X3),
t a n -” (YMWI-N-Yugly・～/XI
3) Due to the positive value, the original 131 is at the corner point 13.
It can be determined that the document 131 is deviated counterclockwise around 1B.In order to correct the position of the document 131 placed in this way, the document moving device described later is used to move the document 131 as shown in FIG. In this case, first move the document +31 around the corner point 131B.
All you have to do is move it counterclockwise by 01 degrees.
Furthermore, in the case of FIG. 5, the document 131 may be rotated by an angle of 02 degrees clockwise about the corner point 131B. In this way, after correcting the orientation angle of the original 131,
To further move the document 131 to the reference position, use the document moving device again to move the document 131 a distance of 1 in the X-axis direction in the case of FIG.
111 Move by X3 and further distance l1IIY in the Y-axis direction
You only need to move P, + emotion, and in the case of Figure 5,
Similarly, the distance is #X3 in the X-axis direction and ¥1 in the Y-axis direction.
~ Just move. Note that the size of the original document 131 can also be calculated. That is, in FIG. 4, the longitudinal dimension deviation of the original 131 can be determined as (XI-X3)Cosθ1, and the width direction dimension YB can be determined as (Y+, 1.we YMIN-
tm) CQSθ. In addition, in the case of Fig. 5, similarly, x, , (XI X3
) C; O8f) 2. YB wo (-1-YMIn, sw
) Co3O4. Next, the document moving device will be explained with reference to FIGS. 6(A) and 6(B). FIG. 6(^) shows a moving mechanism built into the inside of the document pressure plate 133, where 201 is the same as that shown in FIG. 6(B).
) is a stepping motor for rotating the document moving member 202, and 203 is the stepping motor 20.
This is a holding member that holds 1. This holding member 203 is made movable along a guide groove 204A of a running member 204 that is movable laterally, and both ends of a wire 206 stretched between pulleys 205A and 205B are connected to the holding member 203. This allows movement in the Y-axis direction by the stepping motor 207. 208 is a guide groove for moving the running member 204 in the X-axis direction, and by connecting both ends of a wire 210 stretched between the pulleys 208A and 208B to the running member 204, the running member 204 is moved by the stepping motor 211.
can travel in the X-axis direction. Further, the holding member 203 has a magnet 212, and when the magnet 212 comes into contact with a reed switch 213 provided on the traveling member 204, the switch 213 is closed, and the X-axis home position is detected. The position is determined by the pad 214. Further, the running member 204 has a magnet 215, and the magnet 21
5 comes into contact with the reed switch 21G, the switch 218 is closed, and the Y-axis home position is detected, and at the same time, the stopper 217 performs positioning. Note that 218 indicates a home position in which positioning has been performed in the X-axis and Y-axis directions. 220A to 220D are support columns for the document pressure plate 133;
When there is no need to correct the position of the document 131, the support columns 220A to 220D are retracted and stored in the outer shell 133A forming the document pressure plate 133. When it is necessary to move the document 131 to correct its position, the support columns 220A to 220D are driven by a drive means (not shown) in response to a document pressure plate movement signal from a CPU (not shown) to move the pressure plate outer shell 133A. is lifted upward to keep only the document moving member 202 in contact with the document 131. FIG. 7 shows the configuration of the drive circuit of the document moving device. 230
is a controller, and the controller 230 receives a signal ST as rotation data such as rotation angles θ1 and 02 for correction, and a movement data signal S instructing the amount of movement in the X-axis direction.
r, a movement data signal SY indicating the amount of movement in the Y-axis direction, and home position detection signals SHX and SHY in the X-axis and Y-axis directions are supplied. Therefore, the controller 230 first initializes the document moving device based on the home position detection signals SHx and SHY, and first drives the support columns 220A to 220D via the driver 231 to lift the document pressure plate. Next, when it is necessary to correct the angular deviation of the document 131, a rotation signal E is sent via the driver 233 depending on whether the rotation is clockwise or counterclockwise based on the data signal ST. F; E and F are supplied to the stepping motor 201 to rotate it, and a necessary angle correction circuit of the moving member 202 is executed. Furthermore, when it is necessary to correct the movement in the X-axis direction and the Y-axis direction, the
In the case of axis movement, rotation signals A and B are sent via the driver 235.
; Supply the AJ signal to the stepping motor 211 to rotate it forward or backward, and move the running member 204 in the X direction or in the Y direction.
In the case of movement in the axial direction, the rotation signals C, D; σ, D are supplied to the stepping motor 207 through the dry/ Executes X-axis movement and X-axis movement of . Next, a cassette moving device capable of moving and transferring a copy image in the axial direction of the photosensitive drum will be described with reference to FIG. Here, 306 is a cassette that is movable in the axial direction of the photosensitive drum 1 shown in FIG. 1, and 308A is a cassette support mounted on the cassette 306. Pulleys 307A and 30
7B, and the stepping motor 308 drives the pulley 307B. cassette 306 can be moved along guide groove 310. Reference numeral 311 is a paper feed roller that feeds the copy paper 312 from this cassette 308, and 313 is a roller rotation shaft that holds the paper feed roller 311 in a movable state in the axial direction. Therefore, the cassette support stand 30 is attached to the paper feed roller 311.
The other end of a lever 314 whose end is fixed is lightly abutted against the lever 314, and when the cassette 30B is moved along the guide groove 310, the paper feed roller 311 also touches the lever 31.
4 to respond in the same direction. Furthermore, 315 is attached to the cassette support stand 308A.
A shielding plate 318 is a photointerrupter arranged on the housing 317 side of the device, and the cassette 30 is placed in a position where the shielding plate 315 shields the photointerrupter 316.
The home position of B is detected and positioned by the stopper 318. FIG. 8 shows an example of the configuration of a drive circuit for a cassette moving device, where 33Q is a controller. This controller 330 is connected to the cassette 30 via an operation section to be described later.
The movement data signal Sc regarding the movement amount of 6 and the home position detection signal island from the photointerrupter 3Iθ. can be supplied. In this manner, the controller 330 executes initialization using the detection signal 514c, and supplies either forward or reverse rotation signals L and L to the stepping motor 308 via the driver 331 based on the data signal Sc, and the cassette 30
6 moves can be performed. Next, the lens moving device will be explained with reference to FIG. Here, 438 is a zoom lens disposed in the viewing optical path toward the drum 1 (see FIG. 1), and in this figure, the X axis is the direction of the irradiation optical path, and the Y axis is the axial direction of the drum 1. The zoom lens 438 is installed on a lens stand 440, and the lens stand 440 is movable along a guide groove 441, and both ends of a wire 443 stretched between pulleys 442A and 442B are attached to the lens stand 440. By concatenating
A stepping motor 444 allows the lens stand 440 to be moved in the X-axis direction. - Furthermore, 445 is a lens rotating member capable of linear movement in the Y-axis direction, one end of the rotating member 445 is slidably held in a guide groove 446, and the lens stand 440 is moved in the X-axis direction. When the member 445 is moved linearly in the Y-axis direction, the lens 438 can be rotated around its optical axis 438A, thereby changing the magnification of the lens 438. 4471f (y y The magnet attached to the stand 440, 448 is a reed switch, and the magnet 44
7 comes into contact with the reed switch 448, the contact is closed, and the home position in the X-axis direction is detected and positioned by the stopper 449. Note that all of the above-mentioned devices are installed on the traveling member 450. Thus, the pulley 4 is attached to this running member 450.
Both ends of a wire 452 stretched between 51A and 451B are connected, and a stepping motor 453 drives a pulley 4.
51B to make the member 450 movable along the guide groove 451. 454 is a magnet attached to this traveling member 450;
55 is a reed switch, and when the magnet 454 contacts the reed switch 455, the contact is closed, thereby detecting the home position in the Y-axis direction, and positioning is performed by the stopper 456. FIG. 11 shows an example of the configuration of a driving circuit for a lens moving device. Here, 480 is a controller, and the controller 480 is supplied with an X-axis movement data signal SE related to the magnification of the image, a Y-axis movement data signal Ss related to the movement of the image in the drum axis direction, and a reed switch 44 via an operation unit to be described later.
An X-axis home position detection signal Scx from 8 and a Y-axis home position detection signal SLY from reed switch 455 are supplied. In this way, the controller 460 executes initialization using the detection signals SLX, S, , Y, and if the designated data relates to magnification, for example, the controller 460 sends either a forward or reverse rotation signal G to the stepping motor 444 via the dry/":4B1.
,)1. The lens 43 which supplies σ and ■ and shown in Fig. 1θ
8 in the Y-axis direction and rotation around the optical axis 438A, the magnification of the copied image can be changed. If the designated data relates to image movement, the rotation signal I, J or 19 is supplied to the stepping motor 453 via the driver 463, and the lens 43
Image shifting can be performed by laterally moving 8 in the Y-axis direction. As is clear from the above description, the copy image can be moved in the axial direction of the photosensitive drum l by using any of the document moving device, the cassette moving device, and the lens moving device. That is, FIG. S12 shows a case where the image is shifted in the axial direction of the drum 1 by the document moving device. In this case, by moving the document 131 to the position indicated by the broken line in the axial direction, the reflected light image is shifted to the lens 439. The image is formed on the drum i at the position indicated by the broken line, and a copy image 312A is obtained by shifting to the position indicated by the broken line on the copy paper 312. FIG. 13 shows a case where a similar shift is executed by a cassette moving device. In this case, by moving the cassette 308 to the position shown by the broken line, the copy paper 312 stored in the cassette 306 is moved to one point on the drum 1. Since the paper is fed to the position shown by the chain line, a copy image 312A is obtained on the copy paper 312 at the position shown by the solid line. Further, FIG. 14 shows a case where the image is shifted by a lens moving device; in this example, there is no need to move the original 131 and the cassette 306, and only the lens 438 is moved in the axial direction of the drum 1. Therefore, copy paper 312
A copy image 312A can be obtained at the position indicated by the broken line. Next, in order to shift the copy image 312A in the scanning direction, that is, in a direction perpendicular to the axis of the drum l, the first
This is also possible by adjusting only the registration timing of the registration rough as shown in FIG. In the conventional case, the image leading edge is aligned with the copy paper 312 by driving the registration rollers 7 after a certain period of time of scanning starting from the image leading edge 131L of the original 131. Note that m here is the scanning distance until the registration roller 7 is driven with a certain time delay. Therefore, when moving the copy image 312A to the leading edge of the copy paper 312, the registration roller 7 is driven at a timing that is longer than the above-mentioned fixed time, and the copy image 312A is moved to the rear end of the copy paper 312. When moving the registration roller 7 to the side, the registration roller 7 may be driven at a timing faster than a certain period of time. Therefore, by driving the registration rollers 7 at an accelerated timing, for example, by advancing the copy paper 312 by the dimension text, it is possible to move the image on the original 131 to a position P' close to the trailing edge on the copy paper 312. can. In this case, the image can be moved to a similar position P' on the copy paper 312 by moving the original 131, for example, to the left in this figure by the dimension text using the original moving device. Note that it goes without saying that the adjustment of the registration timing described above and the movement of the document 131 by the document moving device may be used together. Next, with reference to FIGS. 17 and 18, an explanation will be given of an operation section that enables operations such as document area and copy area setting and magnification designation of the copying apparatus of the present invention, and a display section on which these are displayed. That is, in the present invention, by operating various keys provided on the operation unit 500, the position and size of the original and copy paper, as well as the image area can be displayed on the display unit, and at the same time, the magnification selection and calculation keys can be displayed. , and other various mode keys, various modes can be executed. In FIG. 17, 501 is a magnification designation key, and 502 and 503 are magnification increase keys and magnification reduction keys. First, by pressing the designation key 501 to designate the magnification, and then operating the key 502 or 503, The magnifications are increased or decreased, and these magnifications are displayed on the display section 60 shown in FIG.
It is displayed as a number on the magnification display section 801 of 0. 510 is a group of desired area designation keys; 511 is a document area designation key; 512 is a copy area designation key;
Reference numerals 13 and 514 are light emitting diodes LEDs for displaying original designation and copy designation, respectively. Furthermore, 515 to 5 provided on the top of these keys
Reference numeral 22 denotes an operation key that can freely move the original line 810 and the copy line 620 displayed on the display section 600 left and right and up and down. Therefore, when specifying the document 131 to a desired area,
First, when the document area designation key 511 is pressed, the LED 513 that displays the designation lights up, and the LE[1514 remains off, so the keys 515 to 522
can be operated to move the document line 810 to a desired area. That is, when the line designation key 515 is pressed, the display section 6
In 00, among the rectangular frame lines of the original line 810, movement of the left frame line 610L is LE.
Displayed by lighting D515S. Then, by pressing the line operation key 517, the frame line 610L is moved to the left, and by pressing the line operation key 5111, the frame line [! 1. The OL can be moved to the right, and the amount of movement is displayed on the display unit 600, for example in FIG.
displayed numerically as shown as 14,
At the same time, the frame line 810L is also shown at the moved position. Similarly, when the line designation key 516 is pressed, the movement of the frame line 610R on the right side of the original line 810 is displayed on the display unit 600 by lighting the LED 51EiS, and when the line operation keys 517 and 518 are pressed, the frame line 610R is displayed on the display unit 600.
10R can be moved leftward and rightward, and the display section 600 displays this in the same manner as described above. Furthermore, by pressing the line designation keys 515 and 516 simultaneously, the frame lines 610L and 810R can be returned to the original initialization lines 611L and 611R. Next, to move the upper frame line 6100 and lower frame line 610D of the original line 610, line designation keys 518 and 520 are operated. Thus, by pressing the line operation keys 521 and 522 with the line designation key 519 pressed and the LED 518S lit, the frames s and etou can be moved upward and downward, and the line designation key 520 By pressing the line operation keys 521 and 522 while the LED 52aci lights up, the frame line Eil
The OD can be moved upwards and downwards. In addition, these amounts of movement and the moved frame #i1.131
The positions of 0[1 and elOD are displayed on the display section 6oo. Also, by pressing the line specification keys 518 and 520 at the same time, these frame lines 8100 and BI
OD can be initialized to the positions of initialization lines 611U and 611D. The case of specifying the document area has been described above, but when specifying the copy area, by pressing the copy area specifying key 514, the specification is displayed by lighting the LErJ 514, and the LED 513 is kept in the off state. Therefore, when moving the left frame line e20L of the rectangular copy line frame line 620 shown on the display section 6oo, press the line designation key 515 and press the line operation keys 515 and 518 in the same manner as described above. For the right frame line 620R, the same operation can be performed by pressing the line designation key 516. In addition, when moving the upper frame line 620U and the lower frame line 6200 among the frame lines 620, use the line designation key 5
Pressing 18 and 520 followed by line operation key 521
and 522 operations. Also, by simultaneously pressing the line designation keys 515 and 516, frame 1.
Initialize 82OL and 820R to the positions of copy lines 621L and 621R, and press the line designation key 518 again.
By pressing and 520 simultaneously, the frame lines 620U and 620D can be initialized to the positions of the initialization copy lines 621U and 621D. 530 is a document detection key for detecting the size of the document. When the original detection key 530 is pressed, the optical scanning device,
That is, in the example of FIG. 1, the light source lamp 34° mirror 35,
36 , 37 and the lens 38 performs prescanning, the CCrJ line sensor 40 detects the position of the document 131, and the position can be displayed on the display section 600. Therefore, if there is a deviation in the position or orientation of the original 131,
The original 131 can be returned to its normal position by the original moving device via the controller 230 shown in FIG. The dimensions can also be displayed numerically. Thus, the display section 60
0 document size display area 602 indicates that the size is, for example, 0R.
-A4 is displayed. 540 is a cassette display key; 540 is a cassette display key;
40 is pressed, the size of the copy paper 312 stored in the selected cassette 306 is displayed on the display section 6oo as a copy initialization line 621, and at the same time, its length is displayed in ffi size units, and the size name is also displayed. is displayed on the cassette size display section 803. Reference numeral 545 is a switching key for the developing device 5 (see FIG. 1). This switching key 545 allows switching to either the developing roller 5A or 5B, and the switched color is displayed on the color display section BO4 of the display section 600. will be displayed. 550 is a multiple mode key;
By pressing this button, the switching flapper 17 shown in FIG. 1 is switched to the solid line position, and the copy paper 312 is sent to the intermediate tray 18.
The next multiple copies can be made in j rows. 560 is a group of keys for the car selection mode. That is, 565 is an automatic magnification calculation key, and when this automatic magnification calculation key 565 is pressed, the magnification of the copy area on the copy paper 312 with respect to the image area on the original 131 is calculated, and the magnification is displayed. In other words, when the key 565 is pressed, the magnification calculation mode is indicated by the lighting of the LED 565S and the other lights on the same line.
In this case, the size of the original +31 is automatically detected, and the specified copy paper 31 is automatically detected.
2, that is, the size of the cassette 30B (see FIG. 8) is displayed on the display section 8oo. Therefore, assuming that a desired image area on original document 131 and a desired copy area on copy paper 312 have been specified by the handler by various operations on the group of desired area specifying keys described above, and key 585 is pressed, The magnification of the copy area with respect to the image area is automatically calculated, and the magnification is displayed on the magnification display section 801. In this case, the x:Y ratio for the previously designated area is stored in the cPU (not shown), and when specifying the area later, the x:Y ratio of the previously stored area is stored. Line 810 or line 820 moves corresponding to the ratio of . 570 is an automatic copy area selection key. Pressing the key 570 indicates that the copy area automatic selection mode is active.
E[] 570S turns on and other LEDs in the same row turn off. In this case, the size of the document 131 is automatically detected, and the size of the specified copy paper, that is, the cassette, is displayed on the display section 800. will be displayed. Therefore, when the handler specifies a desired image area on the document 131 and specifies the magnification by operating the magnification designation key 501 and magnification change keys 502 and 503, and presses the area selection mode key 570, The area to be copied on the copy paper 312 is automatically calculated and displayed as a copy line 620. In this case, further press the copy area key 512,
It goes without saying that by operating the keys 515 to 522, it is possible to move the copy line 620 vertically and horizontally while keeping it in this state. 575 is an automatic image area reverse rotation key. By pressing the key 575, the image area automatic selection mode is indicated by the lighting of the LED 575S and other lights on the same line.
In this case as well, the size of the document 131 is automatically detected and the specified size of the copy paper 312 is displayed on the display section 600. Therefore, when the operator specifies the copy area and magnification on the copy paper 312 and presses the image area selection key 575, the image area on the original 131 is automatically calculated and the image line 61O is It is displayed on the display section 600. In this case, by further pressing the document area key 513 and operating the keys 515 to 522, it is possible to move the image line 810 vertically and horizontally while maintaining its shape. Reference numeral 580 is an original size selection key, and when the key 580 is pressed, the status of the original size selection mode is displayed by lighting up the LED 580S and turning off the other LEII in the same row; in this case, the specified copy paper is selected. 3
Only 12 sizes are displayed on the display section 600. Therefore, when the handler specifies the copy area to be obtained and the magnification on the copy paper 312 and presses the document size selection key 580, the corresponding document
31 is calculated and displayed as a document initialization line 611. Note that the image area on the original 131 and the copy area on the copy paper 312 can be set automatically or manually by key operations on the operation unit 500 as described above. Copying the set image area to the copy area can be achieved using a series of means such as the document moving device, lens moving device, and cassette moving device described above. Further, by operating the developer switching key 545 to specify the color for copying, or by operating the multiplex mode key 550, the copy paper 312 is temporarily held in the intermediate tray 18 and the next specification is made, thereby editing the image. Furthermore, it is also possible to specify a color each time a copy is made. 580 is an automatic cassette selection key. Pressing the key 590 indicates that the cassette automatic selection mode is present.
II51] O9 is turned on, other sheets in the same row are turned off, and Ell is turned off. In this case, only the automatically detected document size is displayed on the display section 6oo. Therefore, the handler specifies the image area on the document 171 and the magnification, and then presses the automatic cassette selection key 590.
When is pressed, the optimal size of copy paper 312 that meets these conditions is automatically calculated, and the cassette size that accommodates copy paper 312 of that size is displayed on the cassette display section 803. In addition, if there is no such cassette size, only the copy line 621 corresponding to the size is displayed and the L
ED 590S is flashed. In the above explanation, the case where the document size is detected by a combination of an optical scanning device and a CCD line sensor 4o has been explained, but in this case, as mentioned above, pre-scanning before copying is required. Ru. Therefore, an area sensor (not shown) can be used in addition to the COD sensor 4o and the optical scanning device. In this way, the position of the document 131 can be detected without pre-scanning. Needless to say, it is possible to correct the position by driving the document moving device while viewing the positional deviation displayed on the display unit 6oo, which can be obtained by pressing the key 530. As described above, the operation unit 500 not only allows inputting the selection of the size and position of the image area and the copy area, the setting of the magnification, and the execution of calculations related to these before copying, but also allows input of the execution of calculations related to these, etc. Since the size, position, cassette size, etc. are all sequentially displayed on the display section 600, the position and size of the document 131 can be detected in conjunction with pressing a copy key (not shown) to start copying, and the display section 600 If the document 131 is in an incorrect position, the start of copying will be suspended for a certain period of time regardless of whether the copy key is pressed, and the operator will be warned and asked whether or not corrections can be made. You can also make it possible to do so. - If the document moving device is not driven or the document pressure plate 133 is not manually released within a certain period of time, it is assumed that the handler has approved the incorrect position, and the copying operation is automatically started or copying is performed again. It is also possible to start the operation only when a key is pressed. Furthermore, although the above description has been made regarding the case where the document moving device is provided, the present invention can also be applied to the case where the document moving device is not provided.
Alternatively, even if provided, it is possible to perform copying by detecting the position and size of the document by pressing the copy key as described above, without performing position correction by the document moving device. Furthermore, it is possible to add standard FNRMAT sentences, pages, dates, etc. to the copying apparatus of the present invention using, for example, an internal eraser.
Once the image read by COD is displayed on CRT,
It is also possible to specify an image area on the RT, and it goes without saying that it is possible to write an image read by a CCD, such as in an LED printer, using an internal eraser or the like. It is also possible to set various areas to predetermined dimensions and select from among the designated areas. [Effects] As described above, according to the present invention, there is provided a document detection means for detecting the size of the document, a means for specifying an image area on the document, a magnification specifying means for specifying the copy magnification, and a copy paper. The display means capable of displaying the size of the original and the cassette size, and the calculation means capable of calculating the copy paper size from the original size and magnification are provided. When the designation is made, the size of the copy paper can be calculated in the calculation means from the original size detected by the original detection means and the above-mentioned magnification, and the calculated copy paper size and the corresponding cassette/paper size are calculated. h size can be displayed on the display means, and the cassette can be selected. Alternatively, it may be configured to prohibit copying if there is no corresponding cassette.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an example of the configuration of a conventional copying device, FIG. 2 is a configuration diagram showing an example of a document coordinate detection device of the copying device of the present invention, and FIG. 3 is a diagram showing coordinates input to the document coordinate detection device. FIG. 4 and FIG. 5 are explanatory diagrams showing an example of the input coordinates when the original is deviated from the normal position. FIGS. 6 (A) and (B) are the copying apparatus of the present invention. FIG. 7 is an explanatory diagram showing an example of the configuration of the drive circuit of the document moving device along with its operation, and FIG. 8 is a cassette movement of the copying device of the present invention. FIG. 8 is an explanatory diagram showing an example of the configuration of a drive circuit of the cassette moving device together with its operation; FIG. 10 is a schematic diagram showing an example of the configuration of the lens moving device of the copying device of the present invention. FIG. 11 is an explanatory diagram showing an example of the configuration of the drive circuit of the lens moving device together with its operation. FIGS. Figures 15 and 16 are schematic diagrams showing three examples of the procedure for moving the image from the image position on the document in the direction of the drum axis, respectively. FIG. 17 is a model diagram showing an example of the key arrangement of the operating section of the copying apparatus of the present invention. FIG. 18 is an explanatory diagram showing an example of the display section of the copying apparatus of the present invention and the graphics and data displayed on the display section. 1... Photosensitive drum, 2... Exposure lamp, 3.8.10... Charger, 4... Exposure position, 5... Developing device, 5A, 5B... Developing roller, 6. 8A, 6th, 306...cassette. 308A...Cassette support stand, ? ... Registration roller, 111A, 9B ... Paper feed roller, 11 ... Conveyance belt, 12 ... Fixing roller, 13 ... Roller, 14 ... Paper ejection roller, 15 ... Tray, 16... Toner collector, 17... Flapper, 18... Tray, 18... Book paper roller, 20... Blank exposure device, 31.131... Original, 131A, 131B, 131G , 1310 ・1111
Point, 131L...Picture tip, 32.132 Original platen, 33.133... Original pressure plate, 133A... Outer shell, 34... Illumination lamp, 35.3B, 37.41... Mirror , 38.38...
・Lens, 40...Line sensor, 42...Standard white board, 43...Standard blackboard, 138...Lens. 140... Sensor, 141... Amplifier, 142... A/D converter, 143... Correction circuit, 144... Binarization circuit, 145... B-W detection circuit, 14B. ...R-W maximum value detection circuit, 147...B-W minimum value detection circuit, 148...W-B detection circuit, 148...W-B maximum value detection circuit, 150...W- 8 Minimum value detection circuit, 201... Stepping motor, 202... Document moving member, 203... Holding member, 204... Traveling member, 204A, 208... Guide groove, 205A, 205B, 201] A, 20i9B...Pulley, 208.210...Wire, 207.211...Stepping motor, 212.2
15...Magnet, 213.218...Reed switch, 214.217
...Stopper, 218...Home position, 220A-220D...Support column, 230.330.460...Controller, 231.
233, 235, 331, 481, 463...Driver, 307A, 307B...Pulley, 308...Wire, 308...Stepping motor, 310...Guide groove, 311...Five paper roller , 312... Copy paper, 312A... Copy image, 313... Roller rotating shaft, 314... Lever, 315... Shield plate, 316... Photo ink blade, 317... Housing , 318...Strong bar, 439 Zoom lens, 439A...Optical axis, 440...Lens stand, 441...Guide groove, 442A, 4428 River pulley, 443...Wire, 444...・Stepping motor, 445 lens rotating member, 446...Guide groove, 447.454...Magnet, 448.455...Reed switch, 448.456
...stopper, 450...travel member, 451...guide groove, 451A, 451B...pulley, 452...wire, 453...stepping motor. 500...Operation unit, 501...Magnification specification key, 502...Magnification increase key, 503...Magnification reduction key, 51 (1...A group of area specification keys, 511...Document area specification key , 512...Copy area specification key. 513.514, 5155.516S, 519S, 52
0S...Light emitting diode (LED), 515.518,518,520...Line specification key, 517.518,521,522...Line operation key, 530...Document detection key, 540... Cassette display key, 545...Developer switching key, 550...Multiple mode key, 560...Selection mode key group, 565...Auto magnification calculation key, 565A, 570A, 575A, 580S, 590S.
...LED, 570...Automatic copy area selection key, 5
75...Auto image area selection key, 580...Document size selection key, 590...Auto cassette selection key, 600...Display section, 601...Magnification display section, 602...Document size display 803... Cassette size display section, 604... Color display section, 610... Document line, 610L, 610R, 810U, 6100... Frame line, 811.611L, 811R, 811U, 8110.
...Initialization original line, 620...Copy line, 620L, 820R, f120U, 6200...Frame line, 62+, 821L, 821R, 8211+, 821D
...AA copy line. m 2 figure 4 figure

Claims (1)

[Scope of Claims] 1) Original detecting means for detecting the size of the original; image area specifying means for specifying an image area on the original; magnification specifying means for specifying a magnification of a copy area with respect to the image area; A copying apparatus comprising: calculating means for calculating the size of the copy paper by specifying an image area by the image area specifying means and specifying a magnification by the magnification specifying means. 2. In the copying apparatus according to claim 1,
A copying apparatus characterized in that a display means is capable of displaying the size of the copy paper calculated by the calculation means and the cassette size corresponding to the copy paper. (Hereafter, margin)