JPS60118862A - Copying machine - Google Patents

Abstract

PURPOSE:To set minutely a magnification by constituting so that a copying magnification calculated from an original size and a copying size can be corrected. CONSTITUTION:Information of scan instruction, scan size, copying magnification, timing signal, return signal, fixed position signal, etc., regarding an optical system is made to communicate between a CPU 201 and 202. When a copying paper size is brought to key-in by ten keys 80-89, this data is displayed on a display device 72, and when an equal key 112 is depressed, a magnification can be set by executing a division for deviding a set copying paper size by an original size. A stored magnification is increased by a prescribed unit at every prescribed time while an up-key is depressed, and the magnification displayed on the device 72 is also increased correspondingly. When the up-key is turned off, the increase of the magnification stops, and this corrected magnification is stored in magnification memories Q5-Q8 corresponding to keys 95-98. In this regard, the magnification is lowered in the same way.

Description

[Detailed description of the invention]

TECHNICAL FIELD The present invention relates to a copying machine, and more particularly to a variable copying magnification type copying machine that can perform copying at any copying magnification. Prior Art Conventionally, for example, from l\4 to B in standardized size.
In so-called variable magnification type copiers, which can perform not only variable magnification copying such as 4 to 4, but also copying at any copying magnification,
When enlarging or reducing an original for copying, calculate the copy magnification using a desktop calculator or the like based on the size of the original and the desired copy paper size, set this calculation result using the arbitrary magnification key on the copier, and then I was making copies. Therefore, when copying, it is necessary to calculate the copy magnification and then set the result of this calculation, which is a complicated operation. In order to eliminate the need for such complicated operations, a method has been proposed in which the magnification for a certain document is calculated and stored, and the copy magnification is changed based on this calculation. In the copier according to this proposal, the size of the copy paper divided by
Copying at a predetermined magnification can be performed by calculating the original size. However, depending on the usage conditions, it may be necessary to make even more minute magnification corrections than the image obtained by the above calculation results, but the copying machine according to the above proposal cannot make such minute magnification corrections. Ta. Purpose of the Invention It is an object of the present invention to provide a copying machine that calculates a magnification based on copy paper size and original size to perform copying, and which can adjust the calculated magnification at will. be. SUMMARY OF THE INVENTION In the present invention, a copy magnification is calculated by dividing the original size and the copy paper size, the calculation result is stored in a memory, and copies are made according to the stored copy magnification. At any time before copying is performed using the magnification, the value obtained by division is stored in the magnification key by operating an appropriate command key (key 93 or 94 in the embodiment). The copy magnification can be increased or decreased by a predetermined unit (for example, 1/1000). EXAMPLE An example of the present invention will be described below with reference to the drawings. FIG. 1 shows an example of a copying machine according to the present invention. A photoreceptor drum 1 that can be rotated counterclockwise is arranged approximately in the center of the copying machine body, and around it are a main laser lamp 2, a sub charger 3, a sub eraser lamp 4, and a main charger 5. , developing device 6, transfer charger 7
, a copy paper separation charger 8, and a blade type cleaning device 9 are provided. The photoreceptor drum 1 has a photoreceptor layer provided on its surface, and this photoreceptor is sensitized and charged by passing through the eraser lamps 2 and 4 and chargers 3 and 5, and receives image exposure from an optical system 10. . The optical system 10 is installed below the original glass 16 so that the original image can be scanned, and includes a light source (not shown) and a movable mirror 11.
．． 12, 13, a lens 14, and a mirror 15. The light source/movable mirror 11 moves to the left at a speed of (v/l11) (where In = copy magnification) with respect to the circumferential speed (V) of the photosensitive drum 1 (constant regardless of the same magnification or variable magnification). The movable mirror 12.13 is driven by a DC motor M3 so as to move to the left at a speed of (v/2 m). Note that when changing the copying magnification, the lens 14 moves on the optical axis and the mirror 15 moves and swings. On the other hand, there are paper feed rollers 21 on the left side of the copying machine body.
.
, a conveyor belt 27, a fixing device 28, and a pair of discharge rollers 29. In the $1 figure, 300 is an automatic paper selection switch and display in an auto document feeder (hereinafter referred to as ADF) 302;
01 is the automatic magnification select switch and display in the same ADF 302. In the copying machine body, 120 to 123 are paper code (size) detection switches for the A paper feed section, and 124 to 1 are paper code (size) detection switches for the A paper feed section.
27 is a paper code detection switch for the B paper feed section. Further, in the paper feed tray 250, 251 to 254 are paper code detection switches for the C paper feed section, and 255 to 25 are paper code detection switches for the C paper feed section.
8 is a paper code detection switch for the D paper feed section. The ADF 302 is installed on the document table 16 of the copying machine, and the document is inserted into the tray part 304 with the document facing downward.
The document is conveyed to a predetermined position on 6 and stopped. After the copying operation is completed, the original is turned over and discharged onto the tray 303. Therefore, prevent the copying machine from starting while the document is being transported, and
The copying machine and the ADF are associated with each other so that the original document is not conveyed at least during scanning by the copying machine. The paper feed table 2.50 also serves as a stand for the copying machine, and is provided with paper feed mechanisms 260 and 261 therein. Paper feed roller 2 is activated by instructions from the microcomputer in the copying machine
60a and 261a are selectively driven. In this case, the paper feed start signal must be output at a faster timing than to the paper feed roller on the copying machine main body side. FIG. 2 shows the arrangement of operation keys on the operation panel of the copying machine. The production panel 70 includes a print key 71 for starting the copying operation, and a numerical display device 72 capable of displaying 4-digit numerical values, 1, 2, . ..., 9.
Numeric keys 80 to 89 corresponding to the numerical value 0, interrupt key 90 for specifying interrupt copying, clear/stop key 91,
A single selection key 92 for specifying the copy paper loaded in multiple stages by size, and up and down keys 93 for changing and specifying the copy image density step by step.
94 and a group of keys 95 to 103 related to a copying magnification setting device are arranged. The first group of magnification setting keys 95, 96, 97, and 98 are arranged for the purpose of arbitrarily setting the magnification, and when the key 99 for switching the first magnification setting mode is operated, the copying machine is controlled. When any key is operated while the mode is switched to the first magnification setting mode, the numerical value inputted by the numeric keypad and displayed on the display device 72 is
The copy magnification is stored in the memory corresponding to the repeated key. 99a is an indicator light indicating that the arbitrary magnification setting mode is set. Second magnification setting key group 100, 1. OL 102゜10
3, predetermined copying magnifications are set in advance in their corresponding memories, and the copying operation is executed based on the preset numerical values without having to set numerical values as in the case of the first group of keys. consideration has been given to making it possible. Therefore, the preset copying magnification is selected, for example, a magnification that is considered to be commonly used for each destination at the time of factory shipment. This will be explained in detail later. Thus, the first set of keys allows the user to easily set the required copying magnification, and the second set of keys is generally used. For example, if it is a domestic specification, A4 → B5. B4→A4. A
3→A4. Alternatively, they are given different functional roles such that magnifications corresponding to A4→A3, etc. are preset. However, since the numerical value preset for the second key group is a general or calculated copying magnification,
Due to mechanical or design errors, the actual copy may differ slightly from its copy magnification. For example, even if you select the same size (×1), the actual size is (Xl, 00
4) Or it may be (Xo, 996) times. In such a case, the control mode of the copying machine is switched to the second magnification setting mode by repeatedly operating the second magnification setting mode switching key 104 shown in FIG. By similar operations, it is possible to set arbitrary numerical values in the memories corresponding to the keys 100 to 103 to obtain a desired copy magnification. Specifically, a numerical value of 1,002 or 0.998 may be set for the same size key. Reference numeral 110 denotes a calculation mode key. When the calculation mode key 110 is pressed when enlarging or reducing an original for copying, a calculation mode is activated in which the copy magnification is calculated from the original size and the desired copy paper size. Set. Reference numeral 110a indicates an indicator light indicating that the calculation mode is in progress, and lights up when the calculation mode key 110 is turned on. Reference numeral 111 is a division key, and when the division key 111 is pressed after keying in the size of the copy paper, which is the dividend, using the numeric keys 80 to 89, the size of the copy paper is set. 112 is the equal key, key in the dividend using the numeric keys 80 to 89, press the division key 111, and then press the numeric keys 80 to 89.
If you press the equal key 112 after inputting the divisor size of the original, the copy paper size is divided by the original size, and the calculation result is directly stored in the memory corresponding to the copy magnification setting key. It can be memorized. FIG. 3 shows a control circuit used in the copying machine according to the present invention, in which 202 is a second CPU that controls the optical system;
The first CPU of 1 is connected to the second CPU connected via the interrupt terminal INT and the data input terminals Sin and 5out.
Controls the CPU 202. Furthermore, 203 is a battery-backed RAM. 204 is a switch matrix, 205 is a drive circuit for a DC motor M3 for document scanning, 206 is a drive circuit for a stepping motor M4 for zooming, and 207 is a decoder. Note that the output terminals A1 to A7 are respectively connected to the main motor M1.
, developing motor M3, timing roller clutch CLI,
It is connected to drive switching transistors (not shown) of the upper paper feed clutch CL2, the lower paper feed clutch CL3, the charger 5, and the transfer charger 7. Various data for copying operation control is written in the RAM 203 or shifted from the ROM in the CPU and stored therein, and the selection keys 100 to 103
Accordingly, the memory Ql. Q2. Q3. As will be described in detail later, for example, when the selection key 100 is turned on, the magnification displayed on the display device 72 is written to or read out from the memory 1), and when the selection key 101 is turned on. Then, the magnification is written to or read from the memory Q2. In addition, for selection keys 95 to 98, memories Q5 and Q6 are
．． Q? , Q8 are provided in the same manner as described above, and, for example, when the selection key 95 is turned on, the scale factor is written to or read from the memory Q5. Table 1 shows codes corresponding to paper sizes. Table 1 Figures 4 to 12 show processing procedures for magnification setting and copying operation control executed in the first Cl).
0-Chart. FIG. 4 is a 70-chart schematically and comprehensively showing the processing procedure in the first CPU. The first CPU 201 and the second CPU 202 communicate with each other using interrupts. 1st CPU 201 and 2nd CPU
202, information such as a scan command, scan size, copy magnification, timing signal, return signal, and fixed position signal regarding the optical system is communicated. Steps Sl and S2 are mainly performed at the time of machine assembly or at the stage of shipping the machine from the factory.''2 Memory Q1
- Presetting processing of the magnification according to Q4 is executed. Details of this process are shown in FIG. Step S3. In 'S4, when the copying machine is not in a copying operation, processing is executed to set magnifications Q5 to Q8 or Q1 to Q4 in association with each selection key 95 to 98 or 100 to 103. Details of this processing are shown in FIGS. 6 to 8. In step S5, data for controlling the lens position and motor drive speed is transferred to the second CPU 202 in accordance with the magnification set in step S4. When this data is transferred, the second CPU 202 processes it using an interrupt. Details of step S5 are shown in FIGS. 9 and 10. In step S6, the process of calculating the copy magnification in the calculation mode described above is executed. Details of this process are shown in FIG. In step S7, processing for controlling the copying operation is executed. Details of this process are shown in FIG. In addition, the first
FIG. 3 is a time chart showing the operation. FIG. 5 is a flowchart showing details of the initial setting process for presetting predetermined numerical values in the memories Q1 to Q4 corresponding to the second magnification setting key groups 100 to 103. The initial switch in step S1 in FIG. 4 is a switch set in a position in the copying machine that cannot normally be operated, so that it can only be released during assembly at a factory or by a service person, for example.
The process shown in FIG. 5 is executed only when this switch is operated. The numerical values preset in the memories Q1 to Q4 are determined by the on/off states of the switches shown at 105 and 106 in FIG. Alternatively, at the factory shipping stage, etc., a worker turns on and off switches 105 and 106 in accordance with a combination determined by the destination, etc., and leaves the initial switch blank to store memories Q1 to Q4. A predetermined value is blicent. Table 2 shows specific examples of precent values for combinations of on and off of switches io5 and 106. Memo corresponding to selection keys 100-103.95-98'
When setting numerical values as copy magnifications in JQ1 to Q8, the processes shown in FIGS. 6 to 8 are executed. In FIG. 6, in steps 5IO1 and 5102, when the key 99 or the key 104 is operated to switch to the copy magnification setting mode, the first. It is determined for which second key group magnification setting is requested. key 9
When key 9 is operated, it is the first copy magnification setting mode, and flag A is set to 1''. When key 104 is operated, '1'' is set to 7lag B, which indicates the second copy magnification setting mode. Further, step S, 104.S1.0
In Step 5, the indicator light 99a indicating the copy magnification setting mode lights up, and if the calculation flag is 0゛, proceed to step 51 ()6, and if the calculation flag is ゛1゛, jump to step 219 (Fig. 7). do. When the key 99 or 104 is operated, in either case, in steps 5103 and 5107, processing is executed in which the 1000th place flag is set to "1" and the display of the 1st place is set to "0". That is, when the control of the copying machine is switched to the magnification setting mode, the numerical display device 72 ``bl+bO'' (b
j, t plan 9) is displayed and enters a standby state to accept input from the 1000th digit. If the numeric keypad is operated in this state, step 8109
The type of key is determined, and only when the rlJ key is 8 degrees, the process proceeds to step 5110 and displays It I 11 at the 1000th position. Note that here, for convenience's sake, the numbers are 1000th and 100th due to the relationship with the numerical display device 72. We will explain numerical values entered manually using expressions such as 10th place and 1st place, but the numerical value as a magnification is treated as a decimal number with 3 digits after the decimal point and 4 significant digits. If the 1000th place flag is “1” and the input value is 0 or 2 to 9, proceed to step 5112 and set 10.
"0" is displayed in the 00th position.Next, if the input is "0", the process goes to step 5111 and the input is "1".
Turn on the 000th flag and turn on the 100th flag 1
Wait for input to the 100th digit. If the input is 2 to 9, the 1000th flag is set to "0" in step 5114, and the process proceeds to step 5117, where the input value is set to 10.
Display in the 0th digit. The process described above when the 1000th flag is “1” is as follows:
The copy magnification is 0.647 to 1. ．． It is based on the idea that numbers in the range of 414 are treated as valid,
Therefore, only "1"()" can be displayed in the 1000th digit. In addition, by doing this, the keystrokes when entering "0" in the 1000th place are simplified. Even if such processing is performed, the numbers entered below the 100th place will be In some cases, the value may fall outside the range of effective copy magnification. The processing at this time will be explained in the subroutine section of FIGS. 7 and 8. When a numerical value is input in the 1000th place digit, the 100th place flag becomes 11111, and when the numeric keypad is operated in this state, the value corresponding to the key pressed in the 100th place digit is inputted, and in step 5117, that value is At the same time, in step 5118, set the 100th place flag to "()" and set it to 1.
Processing to set the 0th place flag to “1” is executed.Hereafter, 1
Inputting the 0th place and the 1st place manually is also done by using the numeric keypad. The flowchart of FIG. 7 shows the process of storing the numerical values input and displayed in the process of FIG. 6 in the memory corresponding to the next selected selection key. In step S201, it is first determined whether the mode is the first magnification setting mode or the second magnification setting mode. Step 5201 is executed only when either 7 lag A or I3 is "1", so here, for example, 111 to determine whether 7 lag A is 11 ], I+
If only 1 constant is executed and 7 lag A is "1", it is the first magnification setting mode, so the first selection key group 95-9
If the flag A is not ``1'', that is, if it is 7 lag B or ``1'', the second selection key group 100 indicates whether it is the vS2 magnification setting mode. Step 5202 to determine the operations of ~103
Proceed to the following. In the process shown in FIG. 7, in any magnification setting mode, the displayed numerical value is basically stored in the memory corresponding to the operated selection key. However, as described above, at this stage, a value that is not within the range of permissible copying magnifications may be displayed. Therefore, in the process shown in FIG. 7, after determining the operation of each key, the subroutine shown in step 5203 is executed to prevent a value outside the permissible range from being stored in the memory. The process of step 5203 is shown in FIG. In FIG. 8, if the display is not "0", step 5
At step 240, it is determined whether the displayed numerical value is smaller than 0°647, and if it is, step 5241 is performed.
Set the display to 0.647. Also, in step 5242, it is determined whether the displayed numerical value is greater than 1°414 or not, and if the value is 1.414, then in step 5243, the display is set to 1.414. Therefore, the relationship with FIG. As explained in , when a predetermined selection key is pressed in the magnification setting mode, if the displayed value is outside the allowable range, the display is changed to the allowable limit value, and then the displayed value is changed to that key. Store it in the corresponding memory. When the process of storing the numerical value in the memory is executed, in the case of the first magnification setting mode, flag A is set to "°0" and the process proceeds to step 5222, and in the case of the second magnification setting mode, the process proceeds to step 5222. sets 7 lag B to “On” and proceeds to step 8206. When in the second magnification setting mode, press the second magnification setting key p.
When 100 to 103 are turned on, the indicator light 99a indicating the arbitrary magnification setting mode is turned off in step 5206, and the process proceeds to step 5207. Further, when the first magnification setting key group 95 to 98 is turned on in the first magnification setting mode, the calculation flag is set to "0" in step 5222 and the indicator light 99 is turned on.
The indicator light 110a indicating the calculation mode is turned off and the process proceeds to step S207. That is, since the indicator light 99a indicates that the mode is the arbitrary magnification setting mode, the indicator light 99a is turned off when setting to the magnification key is completed. In addition, the indicator light 110a
indicates the calculation mode, and when the calculation is completed and the calculation result is stored in the magnification key, the indicator light 110a is turned off. Steps 8207 to 5209 show the processing when the clear stop key 91 (see FIG. 2, l!!t) is pressed. When the clear stop key 91 is pressed, the display device 721 displays "bbb" in steps 5208 and 5209.
1" is displayed, and flags A and B are set to IO". That is, when the clear/stop key 91 is pressed repeatedly, the displayed numerical value is cleared and the magnification setting mode is canceled. Therefore, the numerical value "1" displayed thereby is °1" as the standard setting value for the number of copies. FIGS. 9 and 10 show the second selection key group 100 to 100, respectively.
103 and the process executed when the first selection key group 95 to 98 is repeatedly operated. In FIG. 9, keys 100, 101.1t32 and 1
03 is operated, a light emitting diode 100a, 1f)l provided corresponding to each key is activated.
A, 102a, and B 103a (see Figure 2) that correspond to the operated key are lit, and then the numerical value stored in the memory is used as magnification data.
Transfer to IJ202. In FIG. 10, when any of the selection keys 95 to 98 is pressed, in this case, the corresponding light emitting diode is turned on as described above, and since an arbitrary magnification is set, steps 5402, 5408, and 541S are performed. and 542
At 0, the numerical values set in the corresponding memories 05 to Q8 are displayed on the display device 72. This display is set, for example, only when each key is pressed, and when the key is released, the number of copies set in the storage device is called up and displayed on the display device 72. There is. The numerical value recorded in the memory is transferred to the second CPU 202 as magnification data. FIG. 11 shows the process of calculating the copy magnification in the calculation mode. When the calculation mode key 110 is pressed in step 55 (11-85 (J7), when the calculation flag is 0', the on-edge key 110 is pressed. When you turn on the indicator light j10a that indicates that you are in calculation mode,
Set the dividend flag indicating that the dividend, that is, the size of the copy paper, is to be input using the numeric keys 80 to 89.
Make it 1゛. Then, when the copy paper size is keyed in using the ten keys 80 to 89 in step 5517, which will be described later, this data is displayed on the display device 72. Also, the calculation flag is 111
11, turn on the key 110 to turn on the indicator light 1.1.
．． 0g and the indicator light 99al indicating that it is the arbitrary magnification setting mode is turned off and the calculation flag is set to 1101+. The processing in steps 8505 to 5507 is a process for canceling the calculation mode when the calculation has been executed but the calculation result is not stored in the magnification key and the user wants to finish the calculation alone. Next, in steps 8508 to S510, the division key 11
When 1 is pressed, when this key 111 is pressed, the dividend flag is set to ``0'' since the setting of the dividend is completed, and the divisor flag is set to 1'', which indicates that the divisor, that is, the size of the document is to be manually determined. . Then, in step S52o, which will be described later, select the size of the document or the numeric keypad 8 (
)~); When keyed in from 91, this data is displayed on the display device 72. , furthermore, steps 5511~
In 5515, when the equal key 112 is pressed, the divisor 7 lag is set to "υ゛1" on the edge of this key 112,
The indicator light 99a is turned on in the same way as in the arbitrary magnification setting mode. Then, the set copy paper size is divided by the original size, and the calculation flag is set to 1. When this calculation flag reaches 1, the process proceeds from step 5105 in FIG. 6 to step 2 5219 in FIG. 7, and the magnification can be set in the same manner as in the arbitrary magnification setting mode. Next, in steps 8516 to 5518, if the dividend flag is +1+'', the manual information of numeric keys 80 to 8 is stored in the dividend area.Furthermore, steps 5519 to
In 5521, if the divisor flag is II I II,
The input information from the numeric keys 80 to 89 is stored in the divisor area. In steps 8522 to 8526, when the clear/stop key 91 is pressed, when the key 91 is pressed, if the dividend flag is set to 1 while the dividend is being set, the memory information in the dividend area is set to 0, and the divisor is set. If the divisor flag is 1, the memory information in the divisor area is stored.
0". If the 7 key 93 is turned on here, step 552
If the indicator light 99a is on at step 8, it means that the magnification is being set, so proceed to step 5529, as described above.

[Thus, the calculated and stored magnification is increased by a predetermined unit (for example, 1/1000) every predetermined time while the up key 93 is pressed. The magnification displayed on the display device 72 also increases corresponding to the increase. When the key 93 is turned off, the increase in magnification stops and this corrected magnification is transferred to the magnification key 9.
The magnification memories Q5 to Q8 corresponding to numbers 5 to 98 become 0 memories. Note that when the calculation routine is not entered and the indicator light 99a is off, the exposure value can be increased in predetermined units by turning on the up key 93. (S530). When the down key 94 is turned on instead of the amplifier key 93, the process proceeds from step 5531 to step 8532, where it is determined whether or not it is a calculation routine, and if it is a calculation routine, the calculated copy magnification is changed in predetermined units. lower. If the calculation routine has been completed, the exposure amount is decreased by turning on the down key 94. By the above-described operation, when the key 93 is turned on in the calculation routine, the copy magnification can be increased during the calculation of the copy magnification. When key 94 is turned on, the copy magnification can be decreased. In addition, if the copy magnification exceeds the specification range of the copier,
It is maintained at a constant limit value by the control shown in the figure. With respect to the numerical value set in this way, the lens] 4 is closed to the output of the second CPU 202 and its movement is controlled by the control device 206 in accordance with the copying magnification.
For example, the stepping motor M is a numerical value o, ooi
Alternatively, the drive is controlled in both forward and reverse directions so as to rotate by one pitch per 0.002. Therefore, in practice, stepless magnification can be achieved. In addition, the second CPU is configured so that the moving speed of the optical system is also variable according to the set numerical value.
The control device 205 controls the speed of the direct current DC motor, which is the drive source, based on the output of the motor 202.
No particular details will be given here. In FIG. 2, the panel portion 70a adjacent to the first group of selection keys 95 to 98 has a structure such as a whiteboard that can be written on and erased using a prescribed writing instrument, an adhesive sticker that can be attached and removed by DJ, or a panel that can be attached and detached by magnetic force. However, it is convenient to use the magnification of the numerical value set arbitrarily by the user, for example, to write characters such as "Paper → A4J".The panel part 70a can be used as a trace panel part as necessary. A concave or convex step may be provided. FIG. 12 is a flowchart showing an example of controlling the copying operation of the copying machine. This will be briefly explained with reference to the time chart of FIG. 13. In block 10 When the print switch is turned on, the main motor M] and the developing motor turn 2.
Electric charger 12. The transfer charger 14 is activated, the copy flag indicating that copying is in progress is set to "1", control timers T-A and T-B are started, and the selected side is activated. In block 11, it is determined that the timer TA has ended, and the paper feed clutch is turned off. In block 12, it is determined that the timer T-B has ended, and the scan motor 43 is turned on. is turned on to start the scan operation. In block 13, it is determined that a timing signal is output during the scan operation, and the timing roller clutch CL is turned on.
3 is turned on, and a process of setting timer TC is executed. The copy sheet is conveyed by the timing roller 35 in synchronization with the image on the photoreceptor drum 10. In block 14, it is determined that the timer 1'-C has ended, and the charging, scan motor, and timing roller clutch are turned off. Note that the timer T-C is
It may be set variably depending on the size of the copy sheet used, etc. In block 15, when the optical system returns to the normal position due to the return operation and the normal position switch is turned on, the developing motor N42. Each transfer charger 14 is turned off, the copy flag is set to '0', and the timer T is turned off.
The process of setting -D is executed. In block 16, the expiration of timer T-D is set to 1.
' and then turns off the mechanical motor M1. Block 17
performs processing for various outputs. Note that the timers 1'-A to i'-1) explained in the 70-chart and the time chart above are MC50 executed within the time specified by the internal timer.
1] This is a digital timer programmed to be loaded with a dead power,
The time-up time is stored as numerical data. In this embodiment, a calculation mode key 1101 and a memory key 11 are used when calculating the copy magnification.
1 and the equal key 112 are provided on the operation panel as dedicated keys, which can also be used in common with existing keys by performing the necessary signal processing. As described in detail above, according to the present invention, the copy magnification is calculated from the original size and the copy paper size, and the calculation result is taken at 11 magnification in a copying machine that performs variable size copying. , it is possible to make fine magnification settings according to the user's requirements.

[Brief explanation of drawings]

Fig. 1 is a diagram showing an example of a copying machine to which the present invention is applied, Fig. 2 is a copy of Fig. 1 (a plan view showing several production panels), and Fig. 3 is a diagram showing two embodiments of the present invention. The block diagram and FIGS. 4 to 12 are flowcharts showing processing procedures for magnification setting and copying operation control executed in the first CPU, @
FIG. 13 is a waveform diagram showing essential parts of the copying operation shown in FIG. 12. 72...Numeric display device, 80-89...Numeric keypad,
93...Up key, 94...Grand key, 95~
98.100-103...Magnification setting key, 110...
・Calculation mode key, 111...Memory key, 112・
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Claims (1)

[Claims] (1) a plurality of selection keys, externally operable numerical input means, and information storage means corresponding to each of the selection keys;
The numerical value input by the numerical manual means is stored in the storage means corresponding to the pressed key among the plurality of selection keys, and when the selection key is operated, the stored numerical value becomes the copy magnification. a control means for setting the operation mode of the copying machine, a display means for displaying the divisor and the dividend entered by the numerical input means, an instruction input means for commanding division by the divisor and the dividend, and a command input means for instructing division by the divisor and dividend; a calculation means for executing a calculation, a control means for storing information on the calculation result of the division in the storage means, and a means for correcting the copy magnification by changing the calculation result calculated by the calculation means by a predetermined unit amount. A copying machine characterized by being lacking in.