JPS5999459A - Setter for copying magnification - Google Patents

Abstract

PURPOSE:To set desired magnification continuously by providing a numeral increase and decrease operating means which is operated externally and a control means which sets the operation mode of a copying machine so that a numeral set by said means is copy magnification. CONSTITUTION:Data for controlling copying operation is written in an RAM203 and shifted out of the ROM in a CPU and stored. Memories Q1-Q4 are provided corresponding to selection keys 100-103, and memories Q5-Q8 are provided corresponding to selection keys 95-98. The keys 95-98 are inputted with a ten-key when a key 99 for switching magnification setting modes and the numeral displayed on a display device 72 is stored in a corresponding memory. Keys 101-103 are used for setting specific copying magnification. Further, a magnification display key 110, magnification increase key 111, and magnification decrease key 112 are provided. A scan motor control 205 and a lens control 206 for magnification variation are controlled by the CPU2 to set desired copy magnification continuously.

Description

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

Conventional Technology Copying machines with variable copying magnification, which enlarge or reduce originals, have conventionally been able to set the copying magnification only in predetermined stepwise magnifications, and therefore cannot copy at magnifications between each step. It was inconvenient. 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.

For this reason, it is conceivable to set the copy magnification arbitrarily by external operation, but in this case, a specific value must be entered to set the magnification, and in order to obtain the desired copy, the magnification value must be input. It has the disadvantage that it has to be determined by calculation, etc., and the input operation is troublesome.Furthermore, the magnification is set entirely by numerical input, even if it is necessary to request a special magnification on an ad-hoc basis. Doing so has the disadvantage of increasing the number of memories more than necessary [2], and the operation is also troublesome.

OBJECTS OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and an object of the present invention is to provide a copying magnification setting device that can set a desired magnification virtually steplessly and with an extremely simple operation.

Summary In order to achieve the above-mentioned object, the copy magnification setting device of the present invention is equipped with an increase/decrease operation means such as a push button switch, and while the increase/decrease operation means is operated, the set magnification can be increased or decreased. configured to be able to do so.

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

Copying mechanism FIG. 1 shows an example of an electrophotographic 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 lamp 2. Sub charger 3. Sub eraser lamp 4. Main charger 5
．． A developing device fa 6° transfer charger 7, a copy paper separation charger 8° blade type cleaning device 9 are provided. The photoreceptor drum l has a photoreceptor layer on its surface, and this photoreceptor is sensitized and charged by passing through the eraser lamps 2 and 4 and the charger 3.5, and receives image exposure from the optical system lO. .

The optical system 1O 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 1L.
12113, a lens 14, and a mirror 15. The light source and movable mirror 11 are the photosensitive drum 1
The movable mirror 12.13 moves to the left at a speed of (v/n) (where n: copying magnification) with respect to the circumferential velocity (V) of 0 equal magnification, constant regardless of magnification, and the movable mirror 12.13 It is driven by DC motor M3 to move leftward at a speed of /2n). 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.
．． A paper feed unit 20, 22 with 23 is installed, and the copy paper conveyance path includes a pair of rollers 24, 25, and a timing roller 26.
．． It is composed of 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, the magnification (Xl, 411
It is possible to appropriately select a magnification from 1 to 1 to reduced (Xo, 647).

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 rotates a drive wire 37 wound around a drive pulley 32 fixed to the output shaft 31 of the stepping motor M4. Free boo I
J38, 38, and the middle part of the drive wire 37 is fixed to the side part of the lens 14. therefore,
By rotating the stepping motor M4 forward and backward at a predetermined rotation speed, the drive wire 37 is
rotates forward and backward, the lens 14 moves along the guide rail 36 on the optical axis in the left-right direction in FIG. 3, and is stopped at a position corresponding 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 the movable drive cam 53 comes into contact with the single pin 50 provided through the pin 50, 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 3 fixed to the output shaft 31 of the Nutetsuhig motor M4
3 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 threading motor M4 is controlled by the gear 33.
is transmitted to the cam 53 via the gear 52 and the support shaft 51,
The moving body 41, that is, 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 the mirror 15 are driven in conjunction with each other by a tapping motor M4 as the magnification is changed, and their positional relationship is as shown in FIG. In addition,
In the embodiment of the present invention, the amount of rotation of the threading motor M4 can be adjusted continuously in order to perform stepless magnification.
If this is done in stages, a mechanism can be created that selects several types of magnification.

On the other hand, the mirror swing mechanism 55 brings the circumferential 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 of the mirror 15, and moves the mirror 15 to the shaft 4.
A coil spring 58 wound around the shaft 56 is biased toward the cam 57, while a pinion gear 59 fixed to the support shaft 56 is engaged with a rack 60 attached to the main body of the copying machine.
0 extends parallel to the guide axis 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 photosensitive drum 1 by simply moving the mirror J5 when changing the magnification, and changes the magnification by 1. At this time, the mirror 15 is also 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 response to a change in magnification, the pinion gear 59 rolls on the rack 60, the cam 57 rotates together with the support shaft 56, and the mirror 15 rotates around the shaft according to the circumferential shape of the cam 57. 43 as a fulcrum to correct the exposure point.

In this case, the swinging angle of the mirror 5 is positioned such that the optical axis of the light beam reflected by the mirror 15 is directed toward the center of the photoreceptor drum 1 at maximum magnification (at the time of magnification in this embodiment), and at smaller magnifications. , the exposure point is adjusted to be the same as the exposure point at maximum magnification, and the optical axis is oriented toward the same exposure point. this is,
Since the null-like image is enlarged and projected, the optical axis at the maximum magnification, where the distortion of the exposed image appears most conspicuously, is incident perpendicularly to the photoreceptor drum 1, so that the exposed image due to the deviation of the angle of incidence is completely reduced. It makes the 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. l, 2 respectively. ..., 9,
Numeric keys 80 to 892 corresponding to the numerical value 0, interrupt key 90 for specifying interrupt copying, clear/nutop key 91,
A paper selection key 92 for specifying copy paper loaded in multiple stages by size. Up and down keys 93°9 for changing and specifying the density of the copied image
A and a group of keys 95 to 95 related to the copying magnification setting device of the present invention]
03 etc. are placed.

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 operated key.

Second magnification setting key group 100, 10, 1, 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.

In this way, the first group of keys allows the user to arbitrarily set the required copying magnification, and the second group of keys is generally used, for example, for domestic specifications, A4 → B5. 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 C x 1), in reality it is (Xl, 00
4) Or it may be (Xo, 996) times. In such cases.

Key 104 for switching the second magnification setting mode shown in FIG.
The control mode of the copying machine is switched to the second magnification setting mode by operating , and arbitrary numerical values are set in the memory corresponding to each key 100 to 103 by the same operation as in the first magnification setting mode, and the desired values are set. It is possible to obtain a copy magnification of . Specifically, the number 1.002 for the same size key
or 0.998 may be set.

110 is a magnification display key used when setting the magnification according to the present invention; 11 is a magnification increase key; and 112 is a magnification decrease key.

FIG. 6 shows a control circuit used for the magnification setting device of the present invention, in which 201 is a first CPU, 202 is a second CPU,
Reference numeral 03 denotes a battery-backed RAM, 204 denotes a digital camera, 205 a drive circuit for a direct current motor M3 for document scanning, and 206 a drive circuit for a digital stepping motor M4 for variable magnification.

207 is a decoder. Note that output terminals A1 to A7
are the main motor M 1 and the developing motor M3 .
Timing roller clutch CLl, upper paper feed clutch CL
2. Lower paper feed clutch CL3. Charger 5. It is connected to each drive switching transistor (FIG. 7) of the transfer charger 7.

The RAM 203 stores various data for controlling copying operations.
The selection keys 100 to 103 are written or shifted from the ROM in the CPU and stored.
Corresponding to the memory Ql.

Q2・Q3. Q4, as detailed below,
For example, when the selection key 100 is turned on, the display M72
The magnification displayed in is written to or read from the memo 'JQI, and when the selection key 101 is turned on, the magnification is written to or read from the memory Q2.

Also, for selection keys 95 to 98, memory Q5゜Q6
．． Q7. Q and 8 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 memory Q5.

FIGS. 8 to 17 are flowcharts showing processing procedures for setting magnification and controlling copying operations executed by the first CPU. The present invention will be specifically explained below based on this.

FIG. 8 is a flowchart schematically showing the processing procedure in the first CPU and showing the overall song number.

Step s1. In s2, ・The above memo IJQ mainly made at the time of machine assembly or at the factory shipping stage of the machine
Presetting processing of magnifications for I 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 A and H in correspondence with each selection key 95-98 or 100-103. Details of this process are shown in FIGS. 10 to 12.

In step S5, a process is executed in which data for controlling the lens positioning device and the driving speed of the motor is transferred to the second CPU 2021 in accordance with the magnification set in step S4.

When transferring this data, the second CPLJ 202 processes it by interrupt.

Details of step S5 are shown in FIGS. 13, 14, and 17.

In step S6, other processes such as controlling the temperature of the heater of the copying machine and determining the size of copy 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 91 to Q4 corresponding to the second magnification setting key groups 100 to 103. The initial switch in step S1 in FIG. 8 is a switch that is set in a position in the copying machine that cannot normally be operated, so that it can only be released during assembly at the factory or for service personnel, for example.
Only when this switch is operated, the values preset in the memory Q1-Q,4 shown in FIG. Specifically, when assembling the machine or at the stage of shipping from the factory, the operator turns on the switches 105 and 106 according to the predetermined introduction. By turning off the initial switch and closing the initial switch, predetermined numerical values are preset in the memories Q1 to Q4.

The next process is to set the magnification values for the on/off combinations of the switches 105, 106 stored in the first CPU 201 in the memories 91 to Q4. Table 1 shows specific examples of preset values for combinations of. Shown below.

Table 1 When setting numerical values as photographic magnifications in the memories Q1 to Q8 corresponding to the selection keys 95 to 98 and 100 to 103, the processes shown in FIGS. 10 to 12 are executed.

2 in FIG. 10, in steps 5101 and 5102, if the key 99 or 104 is operated to switch to the close-up magnification setting mode, the first. It is determined 8 for which second key group magnification setting is requested. key 99
When operated, @ sets the number. When the key 104 is operated, flag B indicating the second copying magnification setting mode is set.
Set to 1.

When the key 99 or 104 is operated, in either case, steps 5lo3; 5xo5 are set to 2, the 1000th flag is set to 1, and the 1st rank display sound 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 displays bbbQ (b is blank) and enters a standby state in which it accepts input 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 rlJ key is 80, the process proceeds to step 5108 and 1 is displayed in the 1000th place. 2. Here, for the sake of convenience in relation to the rank display device 72, the positions are 1ooo and 100.

Numerical values input using expressions such as 10th place and 1st place will be explained, 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 flag is Y and the input value is O or 2 to 9, proceed to step 5110 and set 1000.
``”0'* is displayed at the position. Next, if the input is "O", proceed to step 5109 as in the case of rlJ, and perform 1.
Set the 000th flag to O, set the 100th flag to 1, and wait for the input to the 100th digit.If the input J is 2 to 9, set the 1000th flag to 0 in step 5112, and then
Proceeding to step 5115, the input value is displayed in the kloo digit.

The processing described above when the 1000th flag is 1 is based on the 0υ assumption that values in one range from 0.647 to 1.414 are treated as valid copy magnifications.
Therefore, Y or 'o//bz can be displayed in the 1000th digit. However, by doing this, the key operation when inputting 0 to 1000 digits is simplified. Third, even if such processing is executed, there may be a case where the numerical value inputted below the 100th place falls outside the range of the above-mentioned effective copying magnification. The processing at this time will be explained in the subroutine section of FIGS. 11 and 12.

When a value is entered in the 1000th place digit, the 100th place flag becomes 1, and when the numeric keypad is operated in the state of
A numerical value corresponding to the operated key is input to the 0th place digit, and in step 5115, the numerical value is displayed at 2, and at the same time, in step 5116, a process is executed in which the 100th place flag is set to 0 and the 10th place flag is set to 1. Thereafter, the input of the 10th place and the 1st place are also performed by operating the numeric keypad.

The flow chart shown in FIG. 11 shows the process of storing the numerical values input and displayed in the process shown in FIG. 1θ into the memory corresponding to the selection key to be operated next.

In step 5201, it is determined whether the mode is the first magnification setting mode or the second magnification setting mode. Since step 52 o1u is performed when either flag A or B is 1, for example, only the determination of whether flag A is 1 is executed, and if flag A is 1, then Because it can be set in the lth magnification setting mode,
Proceed to step 5218 and subsequent steps to determine the operation of the first selection key group 95 to 98.If flag A is not 1, that is, if flag B is 1, the second magnification setting mode will be selected. The process advances to step 5202 and subsequent steps in which the operation of the selection keys tff-100 to tff-103 is determined.

In process 2 of Fig. 11, in any magnification setting mode, the displayed prestige is basically manipulated.
i″L is stored in the memory corresponding to the selection key. However, as described above, at this stage, the number 1 may be displayed which is not within the range allowed for the copying magnification. Therefore, In the process 2 of FIG. 11, a subroutine indicated by a nuttub 5203 is added after determining the operation of each key, so that a value outside the permissible range is not stored in the memory.Step 52 (J3 Figure 12 shows 38 kon.

2 in FIG. 12 and the display is not O, step 52
At step 30, it is determined whether the displayed numerical value is smaller than 0647, and if it is smaller than 0.647, the display is set to 0.647 in step 5231. In step 5232, it is determined whether the displayed numerical value is 1.414 or not, and if it is large, the displayed value is set to 1.414 in step 5233.

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 will be changed to the allowable limit value. 1: Record the displayed number 1 in the memory corresponding to that key. When the process of storing the number 1 in the memory is executed, the flag A is set to 0 in the first magnification setting mode, and the flag B is set to 0 in the second magnification setting mode, and step 52 (J6
Proceed to.

Steps 5206 to 5208U show the processing when the clear stop key 91 (see FIG. 5) is operated. When the clear stop key 91 is pressed, step 520
7. At 3208, the table π is displayed on the device 72 b b b
1' is displayed, 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 numerical value 51'' thus displayed is '1'' as the standard setting value for the number of copies.

13 and 14 show the second selection key group 100~
103 and the first selection keys #95 to 98 are operated.

In FIG. 13, keys 100, 101, 102 and 1
03 is operated, light emitting diodes 100a, 101a,
The one corresponding to the operated key among 102a and 103a (see FIG. 5) is lit, and then the second CPU 20 uses the numerical value stored in the memory as magnification data.
2 and proceeds to step 5406 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 since the magnification is set by default, steps 5402 and 5408 are performed. .5415 and 542
The numerical values set in the corresponding memos 1JQ5 to Q8 at 0 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 another storage device is called up and displayed on the display device 72. There is. 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 set as the magnification data of 12cPU20.
If it is 0, the process advances to step 5412.

FIG. 17 shows the increase key 111. 7 is a flowchart showing a magnification setting method by operating a decrease key 112. FIG.

In this case, the process passes through step E in the flowchart of FIG. 14 and proceeds to step 5501 of FIG. 17. It is determined whether the increase key 111 is turned on at the rising edge 9, and if YES, in step 5502, one of the light emitting diodes 951 to 103a corresponding to the currently selected magnification key is turned off. At step 8503, an automatic iIf addition timer is set. And as mentioned later, this self! 4/l
When the increase timer finishes counting a predetermined period of time, for example, 0.5 seconds (steps 5522 and 8523), it is the same as when the booster H key 111 is turned on. Generates the ll signal. Then, in step 5504, the CPU 201
Then, the magnification is increased by one unit (for example, 0.002), and the process proceeds to step 5505. Steps 5505 and 5506 determine whether the magnification does not exceed 1.421, and limit the magnification to 1.420 so that it does not exceed 1.421.

Magnification By, Step S 507 Te 2nd CPU 202VC
It is then possible to copy at the set magnification.

Also Nuytsubu 5518+ 5519.5520T increase key 111. If either the decrease key 112 or the magnification key 110 is turned on, all judgments are made, and the magnification given when YES is displayed on the display device 72.

Then, proceeding to the next step 5522, read the timing state of the power increase day timer, for example, when 0.5 seconds have passed after the timer was set, it is assumed that the time measurement of the increase timer has ended in step 5522, and a YES determination is made. Increase key 11
He utters the same Tora-go as in 1. Then, the process returns to step 5501 again.

The above operation is repeated while the increase key 111 is on and off, and the magnification increases to 0.00 every 0.5 seconds.
Increase by 2.

When the increase key 111' is turned off, it is determined that the power increase day key signal has fallen, and the process proceeds to step 5509, where the increase timer is reset and the change in magnification is completed.

After turning on the decrease key 112t, step 5501
, 5508 and 5510. When it is determined that the decrease key 112 is on, step 5511
Light emitting diodes 95a to 1 corresponding to the magnification key with a
03a is turned off, and in step 5511, an automatic decrement timer is set. At step 5512, the magnification i is decreased by 0.002 every 0.5 seconds after setting.

This operation continues as long as the decrease key 112 is turned on. If the magnification is 0.639 or less, step 55
14 limits the magnification to 0.640 and prevents it from decreasing below that.

2. The above-mentioned magnification setting operation is performed to modify the magnification already stored in the memories 91 to Q8, and once or one copy operation is completed with the modified magnification. After that, it returns to the original magnification.

2. If you turn on the increase key 111 only once for a short time,
The magnification can be increased by a unit amount of 0.002.

Turning the decrease key 112 on only once for a short period of time will decrease the magnification by a unit amount.

Also, increase key 111. When the decrease key 112 is operated, the numeric value displayed on the display device 72 is not changed, and the key is operated DU.
While continuing to display the numerical value read out by the VC, the number of times the magnification has changed may be displayed on a separate display device, or the display lamp may be simply blinked every time the numerical value changes.

lta p8 add key 111. If the decrease key 112 is kept on, the change speed of the number may be increased in accordance with the time of operation.

The above concludes the 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, the copying magnification required by each user is limited! It can be easily set using the magnification setting mode f; 1, and the value can be used as control data for the copying machine while calling up the magnification at any time as necessary and confirming it by displaying the set magnification 1c. According to the second magnification setting mode, the magnification is corrected mainly by reading the error between the copy magnification and the higher copy magnification from the copy actually obtained using a preset predetermined copy magnification. The effect of making confectionery such as this can be achieved extremely easily.

Further increase key 111. By operating the decrease key 112, the preset magnification value can be finely adjusted during the copying process, so that the desired magnification can be obtained very easily. This operation is effective when using copying magnifications that are not normally used.

For the number 1 lens set in this way, the movement of the lens 14 is controlled by the ¥A misaki display device 205 based on the output of the second CPU 202 in accordance with the copying magnification. The nutetting motor 44 is controlled to rotate in both forward and reverse directions, for example, so that it rotates by one pitch in response to a numerical value of 0.001 or 0.002. Therefore,
Increase key 111. 0.0 by operating the decrease key 112.
It is also possible to set the magnification in increments of 0.02 and associate the minimum unit before adjustment of the copy magnification with the display. In addition, the movement speed of the optical system is changed to the second CP so that it resumes according to the set value.
It is controlled by the control device 205 based on the output of U2O5, but many methods have been proposed or provided in the past regarding the speed control of the direct current DC motor that is the drive source.
J? I won't go into details here.

2. In FIG. 5, there is a panel portion 70aU, 1-9r adjacent to the first selected nose group 95-98, such as a white board or a removable adhesive that can be written on with a writing instrument of the same size. It would be convenient to use the structure of the panel, etc., which can be removed by using Nutetsuka or Boat J, and the magnification of the numerical value set by the user at will, for example, by writing characters such as [paper → A4J]. . The panel portion 70a may be provided with a concave or convex level difference from other panel portions if necessary.

Copying Operation FIG. 15 is a flowchart showing an example of controlling the copying operation of the copying machine. This will be simply explained with reference to the time chart of FIG. 17.

In block 10, main motor M1.2 is activated by turning on the print switch. N operation mode p-M2. Charging charger 12. Make 14 transfer chargers! +! /l, and set the copy flag, which means that the copy operation is in progress, to 1'', and set the control timers -1'' -A, T -B ((Nutat,
Turn on the clutch of the paper feed roller on the selected side.

In block 11, it is determined that the timer TA has completely expired, and the paper feed clutch is turned off.

In block 12, the timer 7T-B is fully read, and
Turn on the scan motor M3 to start the scan operation.

3 in block 13 indicates that a timing signal has been output during the scan operation, and timing roller clutch CL
3i 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 photosensitive drum 10.

In block 14, it is determined that the timer TC has ended, and the at scan motor and timing roller clutch are turned off. Note that the timer 'r-c may be set to restart depending on the size of the copy sheet being used, etc.

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 O, and the timer 'IT' is turned off.
-D-iz setting processing is fired.

In block 16, it is determined that the timer 'r-o has ended, and the main motor Mlk is turned off. Block 17 is
Ignite the process for outputting each building.

Note that the timers 'r-A to 'r-D, etc. explained in the above flowcharts and time charts are incremented by 1 for each routine of the MC5Q process that is executed at the same time as specified by the internal timer. It is a digital timer that is programmed to perform a time-out, and the time-up time is stored as numerical data.

Effects As detailed above, this invention is extremely easy to operate!
Since the copying magnification can be set steplessly and errors can be made for each type, the user can copy at any time and at any magnification, which is extremely convenient for the operation of the photocopying tool. . ! By correcting the error between the set copy magnification and the actual copy magnification at the user level, it is possible to obtain a copy with accurate magnification.

[Brief explanation of the drawing]

Figure 1 is a diagram showing an example of a copying machine to which this investigation is applied;
2 is a diagram showing the positional relationship of the lenses in the copying machine 2 in FIG. 1, FIG. 3 is a close-up view of the mirror moving mechanism in the copying machine 2 in FIG. Etsu Sakaki's diagram of the second mirror swing of the copying machine; FIG. 5 is a plan view showing the operation panel of the copying machine shown in FIG. 1; FIG. Fig. 7 is an output circuit diagram used in the Laugh'JM example of Fig. 6, Fig. 8 is a slow chart showing the general operation of the main parts of the present invention, Fig. 9 is a flow chart showing the staring program at a specific magnification, and Fig. FIG. 10 is a flowchart showing an example of a method for displaying the set magnification, FIG. 11 is a flowchart showing details of the magnification setting program, and FIG.
Details of the subroutine in 2 of the setting program shown in the figure +l'l
13 is a flowchart showing a successive program at a specific magnification, FIG. 14 is a flowchart showing a reading program at an arbitrary magnification, FIG. 15 is a flowchart showing a copying operation, and FIG. 16 is a flowchart showing a reading program at an arbitrary magnification. FIG. 17 is a waveform diagram showing the main part of the abdominal imaging operation, and a flowchart showing the magnification correction operation using the power increase date key and the decrease key. 72...Display unit, 71...Print switch, 8
0~89...Numeric keypad, 95~98.100~1
03... Selection key, 111... Power booster key,
112...Decrease key. Patent Applicant Minolta Camera Co., Ltd. Representative Patent Attorney Aoyama 2 people = 503 -505- 7rM Figure 8 Figure 9 Figure 15 -508-

Claims (6)

[Claims] (1) A copying magnification characterized by having an externally operable numerical value increase/decrease operation means and a control means for setting the operation mode of the copying machine so that the numerical value set by the numerical value increase/decrease operation means becomes the copy magnification. Setting device. (2) The copying magnification setting device according to claim 1, further comprising a display means for displaying the numerical value inputted by the numerical input means. (3) The copying magnification setting device according to claim 1, further comprising a switching means for switching the copying machine to a copying magnification setting mode. (4) A patent claim that has a numerical display means and a switching means, and when the switching means is operated to enter the magnification setting mode, the display on the display means is cleared and the state waits for an input from the numerical input means. The copying magnification setting device according to scope 1. (5) There are two numerical value increase/decrease operation means: an increase key and a decrease key.
The copying magnification setting according to claim 2, further comprising: key means, wherein the numerical value displayed by the display means is changed by the minimum unit, each time the key means is operated. Device. (6) The numerical value increase/decrease operation means has two keys, an increase key and a decrease key, and each time the key means is operated, the numerical value is changed by a value corresponding to the minimum unit in which the copying magnification can be adjusted. A copying magnification setting device according to claim 1 or 2, wherein the copying magnification setting device is configured to change the magnification.