JPS62161164A - Copy magnification setting device - Google Patents

Abstract

PURPOSE:To allow magnification setting operation only when a copying machine is set in magnification setting mode by providing a numeral setting means, a storage means, a mode operation means, a store operation means, a store control means, a magnification control means, a clear input means, and a mode control means. CONSTITUTION:When the copy magnification setting mode is entered by operating a key 99 or 104, it is decided which of the 1st and the 2nd key groups a request for magnification setting is made to. When the key 99 is operated, it indicates the 1st copy magnification setting mode and a flag A is set to '1'; when the key 104 is operated, a flag B indicating the 2nd copy magnification setting mode is set to '1'. When the key 99 or 104 is operated, a flag for the number of thousands is set to '1' in either case and the display of the number of units is set to '0'. Namely, when the control of the copying machine is switched to the magnification setting mode, a numeral display device 72 displays 'bbb0' (b: blank) and enters a stand-by state wherein an input is received from the digit of the number of thousands.

Description

[Detailed description of the invention] Technical field The present invention relates to a copying magnification setting device for a copying machine.

Conventional technology: Conventionally, so-called variable copying magnification type copying machines that enlarge or reduce originals can only set the copying magnification in predetermined stepwise simplifications, and therefore cannot copy at magnifications between each step. This was an inconvenience. Furthermore, once the predetermined magnification is set in this way, even if the actual copied magnification deviates slightly from the correct value due to mechanical error, the user cannot perform any adjustment operations. I couldn't do it.

In general, copying machines have been proposed that enable stepless magnification using a slide-type control lever, etc., but it is difficult to determine the actual copying magnification, and even if you try to copy at that magnification again, the result will be the same. There were problems such as difficulty in reproducing the magnification.

Furthermore, if the copy magnification can be arbitrarily set using a numerical input means such as a numeric keypad, and the same numerical means is also used for setting the number of copies, confusion may arise between setting the copy magnification and setting the number of copies. There is a risk.

1. An object of the present invention is to provide a copying magnification setting device that allows magnification setting only when the copying machine is set to magnification setting mode and also allows easy release of magnification setting mode.

A further object of the present invention is to provide a copy magnification setting device that can set the copy magnification steplessly.

A further object of the present invention is to provide a copy magnification setting device that can adjust the copy magnification once set to a desired value.

Means for Solving the Problems In order to achieve a series of objects, the present invention provides a manually operable numerical cent means, a storage means for storing numerical data, and a mode for setting the control mode of a copying machine to a magnification setting mode. an operation means; a store operation means for storing the numerical value set by the numerical value setting means in the storage means by a predetermined operation; and a store operation means for storing the numerical value set by the numerical value setting means in the storage means; Store control means for allowing storage of the numerical value by operation of the operating means; Magnification control means for setting the numerical data stored in the storage means as copy magnification data; and Clearing the numerical value set by the numerical cent means. and a mode control for controlling the clear input means and the mode operating means in association with each other so that when the clear input means is operated in the magnification setting mode, the magnification setting mode is canceled. It is characterized by comprising means.

Effect: With the above-described configuration, copy magnification data entered using a numerical value setting means such as a numeric keypad can be set only when the copying machine is set to the magnification setting mode, and is prevented from being confused with the setting of the number of copies. .

Oisei carp An embodiment of the present invention will be described below with reference to the drawings.

Copying mechanism FIG. 1 shows an example of an electronic copying machine equipped with a magnification setting device according to the present invention. A photoreceptor drum 1 that can be rotated in a counterclockwise direction is disposed approximately in the center of the copying machine body, and a main eraser drum 2. Sub charging charger 3
．． Sub eraser lamp 4, main charger 5. Developing device6. Transfer charger 7, copy paper separation charger 8. A blade type cleaning device 9 is provided. The photoreceptor drum l has a photoreceptor layer on its surface.
This photoreceptor is sensitized and charged by passing through the eraser lamp 2.4 and charger 3.5, and receives image exposure from the optical system IO.

The optical system IO 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 and the movable mirror 11 are arranged at a circumferential speed (■) of the photoreceptor drum (equal magnification).

(constant regardless of magnification), the movable mirror moves to the left at a speed of (v/n
D so that it moves to the left at a speed of (v/2 n)
It is driven by C motor M3. When changing the copying magnification, the lens 14 moves on the optical axis and the mirror 15 moves and swings, but such a magnification changing device will be described in detail later.

On the other hand, there are paper feed rollers 21 on the left side of the copying machine body.
(Cu2), 23 (Cu2) paper feed section 20.22
is installed, and the copy paper conveyance path is composed of a pair of rollers 24 and 25, a pair of timing rollers 26 (CLl), a conveyor belt 27, a fixing device 28, and a pair of discharge rollers 29.

Next, a mechanism for moving lenses, mirrors, etc. for changing magnification will be explained with reference to FIGS. 3 and 4. This magnification change mechanism allows virtually stepless selection of magnification from enlargement to reduction, specifically from enlargement (Xl, 414) to same size (x1) to reduction (Xo, 647). The magnification can be selected as appropriate.

The magnification changing mechanism generally includes a lens moving mechanism 35, a mirror moving mechanism 40, a mirror swinging mechanism 55, and a stepping motor M4 that drives these.

The lens moving mechanism 35 has the lens 14 movably mounted on a guide rail 36 installed parallel to the optical axis, and a drive wire 37 wound around a drive pulley 32 fixed to the output shaft 31 of the stepping motor M4. The drive wire 37 is stretched around rotatable pulleys 38 and 3B, and the middle part of the drive wire 37 is fixed to the side of the lens 14. Therefore, by rotating the stepping motor M4 forward and backward at a predetermined rotation speed, the drive wire 37 is rotated forward and backward via the drive pulley 32, and the lens 14 is moved along the guide rail 36 on the optical axis as shown in FIG. It moves left and right and stops at a position that corresponds to the magnification.

The mirror moving mechanism 40 has a guide shaft in which the mirror 15 is fixed on the back side to a shaft 43 rotatably supported by a moving body 41, and side pieces 42 of the moving body 41 are set parallel to the optical axis. 45, and a rotatable roller 44 provided at the end of the shaft 43 is placed on an auxiliary guide rail 46. Also, a bracket 49 is attached to the moving body 41.
The peripheral surface of a movable driving cam 53 comes into contact with the pin 50 provided through the movable body 41, and the movable body 41 is urged toward the cam 53 by a coil spring 48 whose one end is fixed to the pin 47. A gear 33 fixed to the output shaft 31 of the stepping motor M4
The cam 53 meshes with a gear 52 fixed to one end of the support shaft 51, and the cam 53 is fixed to the other end of the support shaft 51.

Therefore, the rotation of the stepping motor M4 is controlled by the gear 33.
is transmitted to the cam 53 via the gear 52 and the support shaft 51,
The movable body 41, ie, the mirror 15, moves back and forth on the optical axis according to the shape of the circumferential surface of the cam 53, and corrects the optical path length as the magnification changes. That is, the lens 14 and mirror 15 are driven in conjunction with each other by a stepping motor M4 as the magnification changes, and their positional relationship is as shown in FIG. In addition, in the embodiment of the present invention, the rotation amount of the stepping motor M4 can be continuously adjusted in order to perform stepless magnification, but if this is done stepwise, the mechanism is such that several stages of magnification are selected. be able to.

On the other hand, the mirror swing mechanism 55 brings the peripheral surface of a swing drive cam 57 fixed to a rotatable support shaft 56 provided on the movable body 41 into contact with the back surface of the mirror 15, so that the mirror 15 is moved around the shaft 4.
The pinion gear 59 fixed to the support shaft 56 is engaged with the rack 60 attached to the main body of the copying machine.
extends parallel to the guide shaft 45. This mirror swinging mechanism 55 corrects the deviation of the exposure point where the optical axis of the light beam reflected by the mirror 15 hits the photoreceptor drum l by simply moving the mirror 15 when changing the magnification, and changes the magnification. At this time, the mirror 5 is swung so that the optical axis is directed to the same exposure point.

That is, when the movable body 41 moves back and forth in accordance with the change in magnification, the pinion gear 59 rolls on the rack 60 and the cam 57
rotates together with the supporting shaft 56, and the mirror 15 swings about the shaft 43 as a supporting point in accordance with the circumferential shape of the cam 57, thereby correcting the exposure point.

In this case, the rocking angle of the mirror 15 is positioned so that the optical axis of the light beam reflected by the mirror 5 is directed toward the center of the photoreceptor drum I at the maximum magnification (in this embodiment, at the time of enlargement). Adjust the magnification so that the optical axis points to the same exposure point as the exposure point at maximum magnification. this is,
Since the slit-shaped image is enlarged and projected, the distortion of the exposed image will be most noticeable. This makes image distortion less noticeable.

FIG. 5 shows the arrangement of the operation keys on the operation panel of the copying machine. The operation panel 70 includes a print key 71 for starting the copying operation, a numerical display device 72 capable of displaying a four-digit numerical value. 1.2 respectively. ..., 9,
Numeric keys 80 to 892 corresponding to the numeric value 0; Interrupt key 90 for specifying interrupt copy; Clear/stop key 91.
A paper selection key 92 for specifying copy paper loaded in multiple stages by size. Up and down keys 93 and 94 for changing and specifying the copy image density in steps, and a group of keys 95 to 95 related to the copy magnification setting device of the present invention.
103 etc. should be placed.

1st + 7) Magnification setting keys 095, 96, 97, 98ti
It is placed for the purpose of arbitrarily setting the magnification, and
When the key 99 for switching the first magnification setting mode is operated and the control mode of the copying machine is switched to the first magnification setting mode, when any key is operated, the display is The numerical value displayed at 72 is stored as a copy magnification in the memory corresponding to the operated key.

Second magnification setting key! ! ? 100, 101, 102゜1
03 has a predetermined copying magnification set in its corresponding memory in advance, so that the copying operation can be executed based on the preset numerical value without having to set the numerical value as in the case of the first key group. is taken into consideration.

Therefore, the preset copying magnification is, for example, a magnification that is considered to be commonly used for photoelectric applications at the time of shipment from the factory. This will be explained in detail later.

In this way, the first set of keys allows the user to arbitrarily set the required copying magnification, and the second set of keys is used for commonly used copies, such as A4-B5 for domestic specifications. B4→A4. A
3→A4. Alternatively, it is given a role with a functional upper limit such that the magnification corresponding to A4→A3, etc. is 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 (x1), 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 operating the second magnification setting mode switching key 104 shown in FIG. It is possible to set arbitrary numerical values in the memory corresponding to each of the keys 100 to 103 by simple operations and obtain a desired copy magnification. Specifically, a numerical value of 1.002 or 0.998 may be set for the same size key.

FIG. 6 shows a control circuit used in the magnification setting device of the present invention, in which 20+ is the first cPU, 202 is the second CPU,
03 is a RAM, 204 is a swivel matrix, 205 is a drive circuit for a direct current motor M3 for scanning an original, 206 is a drive circuit for a stenting motor M4 for variable magnification, and 207 is a decoder. Note that the output terminals AI to A7 are respectively connected to the main motor M+, the developing motor M3, the timing roller Clasoji CLI, the upper paper feed clutch CL2, the lower paper feed resistance latch CL3. Charger 5. Connect to each drive switching transistor (FIG. 7) of the transfer charger 7.

The RAM 203 stores various data for copying operation control.
4 is written or shifted from the ROM in CP LJ and stored, and corresponding to selection keys 100 to 103, memory section Ql.

Q2, Q3, and Q4, and 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 storage unit Q1, When the selection key lO1 is turned on, the magnification is written into or read out from the storage section Q2.

Also, for the selection keys 95 to 98, the storage units Q5 and Q
6, Q7, and Q8 are provided in the same manner as described above, and for example, when the selection key 95 is turned on, the magnification is written in or read out from the storage section Q5.

This RAM 203 is backed up by a battery, for example, and its stored contents are retained even if the power is cut off.

FIGS. 8 to 15 are flowcharts illustrating processing procedures for magnification setting and copying operation control executed by the first CPU. The present invention will be specifically explained below based on this.

FIG. 8 is a flowchart schematically and comprehensively showing the processing procedure in the first CPU.

In steps Sl and S2, the above-mentioned storage section Ql-
Presetting processing of the magnification for 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 A to H in association with each selection key 95 to 98 or 10.0 to 103. Details of this process are shown in FIGS. 1O to 12.

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 transferring this data, the 20th PU 202 processes this by interrupting.

Details of step S5 are shown in FIGS. 13 and 14.

In step S6, other processes such as controlling the temperature of the heater of the copying machine and determining the size of the trace paper are collectively shown.

In step S7, processing for controlling the copying operation is executed. Details of this process are shown in FIG. In addition, the first
FIG. 6 is a time chart showing the operation.

FIG. 9 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 St in FIG. 8 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 in a factory or for service personnel, for example.
The process shown in FIG. 9 is executed only when this switch is operated.

The numerical value preset in the memory Ql-Q4 is determined by the on/off state of the switch associated with the operation of the keys shown at 105, 106, and 107 in FIG.
Specifically, during machine assembly or factory shipping, a worker turns on and off switches 105 to 107 in accordance with a combination predetermined by the destination, etc., and closes the initial switch. Predetermined numerical values are preset in the memories Q1 to Q4. Steps 5501 and 5502 indicate processing for setting multiplier values for the on/off combinations of the switches 105 to 107 stored in the first cPU 201 in the respective memories Ql-Q4. Table 1 shows specific examples of preset values for combinations of
．． Shown below.

Table 1 Note that the numerical value "Oj" does not indicate that the magnification is set to 0, but indicates that the corresponding key is in an empty state. Processing when the memory is "0" will be described later.

When setting numerical values as copy magnifications in the memories Q1 to Q8 corresponding to selection keys 95 to 98 and 100 to 103, the processes shown in FIGS. 10 to 12 are executed.

In FIG. 10, in steps 5lot and 5102, when the key 99 or +04 is operated to switch to the copy magnification setting mode, it is determined which key group [, 2] is requested to set the magnification. It will be judged. key 99
When is operated, the mode is the first copy magnification setting mode,
The flag A is set to "B". When the key 104 is operated, the flag B indicating the second copy magnification setting mode is set to "B".

When the key 99 or 104 is operated, in either case, in steps 5103 and 5105, a process 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 copying machine is controlled or switched to the magnification setting mode, the numerical display device 72 displays "bbb o" (b is blank) and enters a standby state in which manual input is accepted from the 1000th digit.

If the numeric keypad is operated in this state, step 5107
The type of key is determined, and only when the "1" key 80 is selected, the process proceeds to step 5I08 and "B" is displayed at the 1000th position.

Note that here, 1 is used for convenience due to the relationship with the numerical display device 72.
000th place, 100th place.

Numerical values will be explained using expressions such as 10th place and 1st place, but the numerical value as a magnification is treated as a lO base number with 3 digits after the decimal point and 4 significant digits.

If the 1000th flag is "l" and the input value is 0 or 2 to 9, proceed to step Sl 10 and enter 1.
Display “0” at the 000th position. Next, if the input is "0", the process proceeds to step 5109 as well as the case of rN, and the input is 1.
Set the 000th flag to "0" and set the 100th flag to "B" to wait for manual input to the 100th digit. If the input is 2 to 9, set the 1000th flag to "0" in step 5112, then step 5115 The entered value is displayed in the 100th digit.

The processing described above when the 1000th place flag is "B" is based on the premise that values in the range of 0.647 to 1.414 are treated as valid copy magnifications, and therefore, the 1000th place flag is Only “BI” or “0” can be displayed. Also, by doing this, “0” is placed in the 1000th digit.
” key operation is simplified.
Even if such processing is executed, there may be cases where the value inputted below the 100th place is outside the range of the above-mentioned effective copying magnification. The processing at this time will be explained in the subroutine section of FIGS. 1 and 12.

When the 1000th digit is entered manually, the 100th flag becomes "B", and when the numeric keypad is operated in this state, the 100th digit is entered manually.
The numerical value corresponding to the key operated for the digit digit is entered manually, and in step S1[5, the numerical value is displayed. In step Sl16, the 100th place flag is set to "0" and the 10th place flag is set to "B". Hereinafter, the 10th place human power and the 1st place human power will also be performed by operating the numeric keypad.

The flowchart of FIG. 11 shows the process of storing the numerical values input and displayed in the process of FIG. 10 in the memory corresponding to the selection key to be operated next.

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 flag A or B is "I", so here, for example, only the determination whether flag A is "1" or not is executed; If so, it is the first magnification setting mode, so
The process advances to step 8218 and subsequent steps to determine the operation of the first selection key group 95 to 98, and when flag A is not "bi", that is, when flag B is "ji", it is the second magnification setting mode. The process advances to step 5202 and subsequent steps in which the operation of the selection key group 100 to +03 is determined.

In the process shown in FIG. 11, 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 outside the permissible range of copying magnification may be displayed.

Therefore, in the process of FIG. 1I, the subroutine shown in step 5203 is executed after determining the operation of each key, so that a value outside the permissible range is not stored in the memory. The process of step 5203 is shown in FIG.

In FIG. 12, if the display is not "0", it is determined in step 5230 whether the displayed numerical value is smaller than 0.647, and if it is smaller, step 523
1 and the display is 0.647.

Also, in step 5232, whether the displayed value is 141
Determine whether it is greater than 4, and if it is a dog, step 5
233 and the display is set to 1.414.

Therefore, to explain in relation to FIG. 11, when a predetermined selection key is operated 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 display is changed to the allowable limit value. The numeric value is stored in the memory corresponding to that key. When the process of storing numerical values in the memory is executed, flag A is set to "0" in the case of the first magnification setting mode, and flag B is set to "0" in the case of the second magnification setting mode, and the process advances to step 8206.

Steps 8206 to 8208 show processing when the clear stop key 91 (see FIG. 5) is operated. When the clear stop key 91 is pressed, step 520
At 7,5208, "bbbbi" is displayed on the display device 72, and flags A and B are set to "0". That is,
When the clear/stop key 91 is operated, the displayed numerical value is cleared and the magnification setting mode is canceled. Therefore, the number “B” displayed by this is
"B" is the set value for the number of copies.

13 and 14 show the second selection key group 100~
103 and the first selection key f! The process executed when $95 to $98 is operated is shown.

In FIG. 13, keys 100, 101, 102 and 1
When any one of keys 03 is operated, light emitting diodes 100a, l01a,
Among l02a and 103a (see Fig. 5), the one corresponding to the operated key is lit, and then, if the contents of each corresponding memory Ql-Q4 are not "0", it is stored in the memory. The 2nd CPU 2 uses the numerical value as magnification data.
02 and proceeds to step 8406 in FIG. If the content of the memory corresponding to the operated key is "0", the process similarly advances to step 5412.

In FIG. 14, when any of the selection keys 95 to 98 is operated, in this case, the corresponding light emitting diode is turned on as described above, and an arbitrary magnification is set, so step 5402. S・+08.51115 and 5
At 420, the numerical values set in the corresponding memories Q5 to Q8 are displayed on the display device 72. This display is
For example, when each key is pressed, the number of copies set in another storage device is called up and displayed on the display device 72 when the key is pressed. In the case of this first group of selection keys, if the numerical value stored in the memory corresponding to the operated key is not "0", the numerical value is sent to the second CPU 2 as magnification data.
If it is “0”, the process advances to step 5412.

In steps 5412 and 5413, if the content of the memory corresponding to the operated key is "0", the magnification value that was selected until the selection key was operated is selected, and the "0" selection state is maintained. The flag M indicating the
is set to "0", and in step S=126, the light emitting diode corresponding to the "previous" memory called out in step 5412 is lit, and in step 5427, the value stored in that memory is turned on or the second CPU 202
will be forwarded to. In other words, if the key corresponding to the memory is pressed when the number "0" is pressed, the process should be made so that the state is the same as if the key corresponding to the memory had not been operated.

The following is an explanation of the setting operation in the magnification setting device of the present invention. As is clear from this explanation, according to this magnification setting device, any copying magnification required by each user can be easily set by using the first magnification setting mode, and can be set at any time as necessary. While calling up the magnification and confirming the set magnification on the display, you can use that value as control data for the copying machine. In addition, according to the second magnification setting mode, the work is mainly to correct the magnification by reading the error with the numerical copy magnification from the copy actually obtained with a preset predetermined copy magnification. The effect achieved is that this can be done very easily.

With respect to the numerical value set in this way, the movement of the lens 14 is controlled by the control device 206 based on the output of the second CPU 202 in accordance with the copying magnification.
The stepping motor M4 is, for example, several tao, oot
Or so that it rotates by 1 pitch per 0.002,
Drive is controlled including forward and reverse directions. Therefore, practically stepless variable magnification can be achieved. In addition, the second CPU 2 controls the moving speed of the optical system to be variable according to the set numerical value.
Based on the output of 02, the control device 205 controls the speed of the direct-fi DC motor, which is the drive source. Many methods have been proposed or provided in the past.
No particular details will be given here.

In FIG. 5, 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 with a predetermined writing instrument, a removable adhesive sticker, or a panel that can be attached and detached by magnetic force. 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 with other panel parts as necessary. A concave or convex step may be provided.

Copying Operation FIG. 15 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. 17.

In block IO, main motor M1. Developing motor M2, charging charger 12. Each of the transfer chargers 14 is activated, a copy flag indicating that a copy operation is in progress is set to "l", and a control timer T is activated.
-A and T-B are started, and the clutch of the paper feed roller on the selected side is turned on.

In block 11, the end of the timer TA is determined and the paper feed clutch is turned off.

In block 12, it is determined that the timer T-I3 has ended, and the scan motor M3 is turned on to start the scan operation.

In block 13, when the timing signal is output during the scan operation, the timing roller clutch CL
At the same time as turning on 3, execute the process of cents the timer T-C. The copy note is conveyed by the timing roller 35 in synchronization with the image on the photosensitive drum IO.

In block 1, it is determined that the timer TC has ended, and the charging, scan motor, and timing roller clutch are turned off. Note that the timer TC may be set variably depending on the size of the copy sheet used.

In block 15, when the optical system returns to the home position due to the return operation and the home position switch is turned on, the developing motor M2. Each transfer charger 14 is turned off, the copy flag is set to "0", and the timer T-
Processing to set D is executed.

In block 16, it is determined that the timer T-D has ended, and the main motor M+ is turned off. Block I7 executes processing for various outputs.

It should be noted that the timer T-A-T-D, etc. explained in the above flowcharts and time charts are configured to be counted up in one routine of the processing of the MC 50, which is executed within the time specified by the internal timer. It is a programmed digital timer, and the time-up time is recorded as numerical data.

As described in detail, according to the present invention, the copy magnification data entered by manual means such as a numeric keypad can be set only when the copying machine is set to the magnification setting mode, and the number of copies can be set. This prevents confusion with Also, since the magnification setting mode can be canceled with the clear key, erroneous input can be easily prevented.

Furthermore, since the present invention allows the copying magnification to be set steplessly with an extremely simple operation, the user can copy at any desired magnification at any time, which is extremely convenient for the operation of the copying machine. Further, the error between the preset copy magnification and the actual copy magnification can be corrected at the user level, making it possible to obtain accurate variable-magnification copies.

[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 diagram showing the positional relationship of lenses in the copying machine shown in Fig. 1, Fig. 3 is a perspective view of the mirror moving mechanism in the copying machine shown in Fig. 1, and Fig. 4 is a diagram showing the positional relationship of the lenses in the copying machine shown in Fig. 1. FIG. 5 is a plan view showing the operation panel of the copying machine shown in FIG. 1, FIG. 6 is a block diagram showing an embodiment of the present invention, and FIG. Output circuit diagram used in the example,
FIG. 8 is a flowchart showing the general operation of the main part of the present invention, FIG. 9 is a flowchart showing a specific magnification setting program, FIG. 10 is a flowchart showing an example of a method of displaying the set magnification, and FIG. Flowchart 1 showing the details of the setting program, Fig. 12 is a flowchart showing details of the subroutine in the setting program of Fig. 11, Fig. 13 is a flowchart showing a program for successive execution of a specific magnification, and Fig. 14 is a flowchart for successive execution of an arbitrary magnification. FIG. 15 is a flowchart showing the program, FIG. 15 is a flowchart showing the copying operation, and FIG. 16 is a waveform diagram showing the main part of the copying operation shown in FIG. 72...Display 7I...Print switch 80-89...Numeric keypad 95-98.100-+03...Selection key Q1-Q
8...Storage section '1XV Figure 8F]

Claims (1)

[Claims] (1) A manually operable numerical value setting means, a storage means for storing numerical data, a mode operating means for setting the control mode of the copying machine to a magnification setting mode, and a predetermined value for the numerical value set by the numerical value setting means. a store operation means for storing the numerical value in the storage means by the operation of the storage means; and a store control means for allowing the storage of the numerical value by the operation of the store operation means when the control mode is switched to the magnification setting mode by the mode operation means. and a magnification control means for setting the numerical data stored in the storage means as copy magnification data; a clear input means for clearing the numerical value set by the numerical value setting means; A copying magnification setting device comprising: mode control means for controlling the clear input means and the mode operation means in association with each other so as to cancel the magnification setting mode when the clear input means is operated.