JPS59107366A - Control mechanism of copying machine - Google Patents

Abstract

PURPOSE:To simplify an operation and to prevent an erroneous copying by selecting a specified magnifying power from plural copying magnifying powers, storing it, and setting this selected magnifying power when a power source is turned on or at the time of auto resetting. CONSTITUTION:The first magnifying power setting key groups 95-98 which are capable of setting optionally a magnifying power are placed on an operation panel 70, and a magnifying power corresponding to, for instance, A4 B5, B4 A4, etc. is preset in the second magnifying power setting key groups 100- 103. When a magnifying power is set by operating a key 99 for switching a magnifying power setting mode, its set magnifying power is stored in a storage part of a control mechanism. Also, this stored data is constituted so as to be set to this set magnifying power when a power source is turned on or at the time of auto resetting. Therefore, in case when copying is executed by a fixed magnifying power, such complexity as sets it again when the power source is turend on again is eliminated, the operation is simplified, and an erroneous copying can be prevented.

Description

[Detailed description of the invention] Technical field The present invention relates to control of a copying machine.

Conventionally, a copying machine having a so-called variable copying magnification function for enlarging or reducing an original does not require any operations to be performed on the copy when the power is turned on, or when a certain period of time has elapsed after the completion of the copying operation, or for a certain period of time. When it didn't happen, that is, O1
-11 is set, the copy magnification is automatically set to a specific value (normally, the copy magnification -x1 is standard). For this reason, when copying at a constant magnification, it is a cumbersome operation to set the magnification every time the power is turned on or auto-reset, and if you forget this setting, you may end up copying at the wrong magnification. The problem is that it is often carried out in different ways.

Purpose The present invention has been made in view of the above circumstances, and its purpose is to improve copying (111 operations in a copying machine with a variable iλ rate).
) It is an object of the present invention to provide a control mechanism for a copying machine that can prevent copying and misleading copying.

In order to achieve the above object, the present invention includes means for selecting a specific copying magnification, means for storing the selected copying magnification, and storing the stored copying magnification when the power is turned on or It is equipped with control Ji11 means to be set at the time of auto-reset.

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

Figure 1 shows the control mechanism of a copying machine according to the present invention in a 4+1j configuration.
An example of an electrophotographic copying machine is shown below. A photoreceptor drum 1 that can be rotated in a counterclockwise direction is disposed approximately in the center of the main body of the copying machine, and a main eraser lamp 2. Sub charger 31 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 1 has a photoreceptor layer provided on its surface, and this photoreceptor is sensitized and charged by passing through the eraser lamp 2.4 and chargers 3, 5, and an image (image) is output from the optical system 10. Receive light.

The optical system 10 is installed below the original glass 16 so that the original image can be fixedly displayed, 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 mirror 11 move to the left at a speed of (V/n) (where 11: copying magnification) with respect to the circumferential speed (v) of the photosensitive drum 1 (constant regardless of magnification or variable magnification). The movable mirror 12.13 is driven by the I)C motor M3 so as to move to the left at a speed of (V/2 n ). Note that when changing the copying magnification, the lens 14 moves on the optical axis and the mirror 15 moves/
Although a swinging motion is involved, 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.
(CLI), 23 (CL3) are installed, and the copy paper conveyance path is provided with a pair of rollers 24.
, 25, a pair of timing rollers 2'6 (CLI), a conveyor belt 27, a fixing device 28, and a pair of discharge rollers 29.

Figure S2 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 and 2 respectively. ..., 9
, 0 numeric keys 80 to 891 Interrupt key 90 to specify interrupt copy Clear/stop key 91
．． Paper selection key 92 for specifying copy paper loaded in multiple stages by size. Copy II! ! i ('
Up and down keys 93 and 94 for changing and specifying I density in steps and a group of keys 95 for setting copy magnification
~103 etc. are placed 1 so.

The first group of magnification setting keys 95, 96, 97, and 98 are arranged for the purpose of arbitrarily setting the magnification, and the key 99 for switching the first magnification setting mode is operated monthly. When any key is operated while the control mode is switched to the first magnification setting mode, the numerical value inputted by the numeric keypad and displayed on the display device 72 corresponds to the operated key. The image is stored in memory as a copy magnification.

Second magnification setting key group 100, 101, 102° 103
In this case, a predetermined copying magnification is set in advance in each of the memories in the LLI, and the copying magnification is based on the preset value without having to set the numerical value as in the case of the first key group above. It is designed to be able to perform copying operations while Therefore, as the preset copying magnification, for example, a magnification that is considered to be commonly used for the intended light color at the time of shipment from the factory is selected. This will be explained in detail later.

In this way, the user can arbitrarily set the required copying magnification using the first key Rb, and the second key 1 (Rb) is commonly used.For example, for domestic specifications, 'A4→B5. B4→
A4. A3→A4. Alternatively, different roles are given to the frame so that magnifications corresponding to A4→A3, etc. are preset. However, the second key! 11. Since the preset value is a general or calculated copying magnification, it may differ slightly from the actual copy or copying magnification due to mechanical or design errors. For example, even if the same size (×1) is selected, the actual size may be (Xl, 004) or (Xo, 996). 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 to obtain a desired copy magnification. Specifically, the numerical value 1.002 or 0.998 for the same size key
can be set.

FIG. 3 shows a control circuit used in the control mechanism of the present invention, in which 201 is the first CPU, 202 is the second CI) U, 20
3 is an itAM, 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 variable magnification, and 207 is a decoder. Note that the output terminals Al to A7 are connected to the main motor M l and the developing motor M3 . Timing roller clutch CLI, upper paper feed clutch ct2, lower paper feed clutch CL3. Charger 5. It is connected to each drive switching transistor (not shown) of the transfer charger 7.

Various data for copying operation control is written in the RAM2 Q3, or shifted from the ROM in the CI) and stored therein, and is also stored in the memory Ql in correspondence with the selection keys 100 to 103.

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 memo IJQI, and when the selection key 101 is turned on, The magnification is written to or read from memory Q2.

In addition, for selection keys 95 to 98, write [part Q5゜Q
6. Q7. Q8 is provided in the same manner as described above, and for example, when the selection key 95 is turned on, the magnification is written to or read from the storage section Q5.

This RAM2Q3 is backed up by a battery, and the stored contents are retained even if the power is turned off.

FIGS. 4 to 13 are flowcharts showing processing procedures for magnification setting and copying operation control executed in the first CI). The present invention will be specifically explained below based on this.

FIG. 4 is a flowchart schematically and comprehensively showing the processing procedure in the first CPU. Step S1 is an initial setting routine in which the copy mode is initialized, that is, if a priority magnification is set, that magnification key is selected, and if a priority magnification is not set, a predetermined magnification key is selected. . Details of this initial setting routine are shown in FIG. Next, if the initial switch is turned on in step S2, destination setting is performed in step S3. Step s2. In s3, the above memo IJ Q 1 to Q mainly made at the time of machine assembly or at the stage of shipping the machine from the factory.
Presetting processing of the magnification for 4 is executed. Details of this process are shown in FIG.

Next, if the copy operation is not in progress in step S4, each selection key 95 to 98 or 100 to 103 is pressed in step S5.
A process for associating and setting the magnification A N1-1 is executed. Details of this process are shown in FIGS. 7 to 9. Subsequently, in step S6, processing is executed to transfer data for controlling the lens position and motor drive speed to the second CPU 202 in accordance with the magnification set in step S5. When transferring this data, the second CPU 202 processes it by interrupt. Details of this step S6 are shown in FIGS. 10 and 11.

Next, in step S7, priority magnification key setting processing is performed. In this step 57, when the mode is not the priority magnification setting mode, normal processing, that is, the magnification is set to 1, and when the mode is the priority magnification setting mode, the magnification input by the ten keys is set. Details of this step S7 are shown in FIG. Next, in steps sB and sg, if the key is manually off-edge, that is, an auto-reset timer is set at the moment the key is released. When the auto-reset timer finishes its time counting operation in step SIO, the above-described initial setting routine is executed again in step S12, and processes such as controlling the temperature of the heater of the copying machine and determining the size of copy paper are performed in step S12. Subsequently, in step S13, processing for controlling the copying operation is executed. This step 513
Details of the processing are shown in FIG. Incidentally, FIG. 14 is a time chart showing this copying operation.

As shown in FIG. 5, the initial setting routine of steps S1 and Sll described above sets the display of the copy set number on the four-digit numerical display device 72 (FIGS. 2 and 3) to 1 in step 5601, and In step 5602, paper feed A is selected as the paper feed port. Next, in step 5603, PL A, M 20
If the magnification memory No. 3 is blank, that is, no priority magnification key has been set, the magnification A key is selected in step 5604. If the magnification memory is not flanked, that is, if some magnification key is stored in the magnification memory, then the magnification key corresponding to the contents of the magnification memory after step 5605 is selected.

FIG. 6 shows memos IJQI-Q corresponding to the second magnification setting key group 100-103.4. This is a flowchart showing details of initial setting processing for presetting a predetermined numerical value. The initial switch in step S2 in FIG. 4 is a switch that is set in a position in the copying machine that cannot normally be operated, so that it can be released during assembly at a factory or by a service person, for example. The process shown in FIG. 6 is executed only when this switch is operated.

The numerical values stored in the memories Q1 to Q4 are determined by the on/off states of the switches shown at 105 and 106 in FIG. During machine assembly, factory shipping, etc., the operator or destination turns on the switch 105 according to a combination predetermined by the supplier. By turning on and off 106 and closing the initial switch, a predetermined numerical value is preset in the memories Ql-Q4. Steps 5501 and 5502 are the i c p
Switches 105 and 106 stored in u201
Each memo IJQ shows the magnification value for the combination of on and off.
This shows the process of setting I to Q4, and the switch 10
Table 1 shows specific examples of preset values for on/off combinations 5 to 107.

Table 1 Memo corresponding to selection keys 95-98 and 100-103'
When setting numerical values as copy magnifications in JQI to Q8, the processes shown in FIGS. 7 to 9 are executed.

FIG. 7 Nioite, steps 5101 and 5102.

If the key 99 or 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. When the key 99 is operated, it is the first copy magnification setting mode, and flag A is set to 1". When the key 104 is operated, the flag B1 indicating the second copy magnification setting mode is set. do.

When the key 99 or 104 is operated, in either case, in steps 5103 and 8105, processing is executed in which the 1000th place flag is set to 1'' and the 1st place display 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 shows "bbbQ" (1) is blank.
The screen will be displayed, and it will be in a standby state where input from the 1000th digit will be accepted.

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 5108 and 1" is displayed in the 1000th place.

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

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 input number-pus is O or 2 to 9 in the state of the 1000th flag car 1'', proceed to step 5110 and input 1.
1" is displayed at the 000th place. Next, if the input is "0", the process goes to step 5109 and 1 is displayed as well as if the input is "1".
Set the 000th flag to 0", set the 100th flag to 1", and wait for input to the 100th digit. If the input is 2 to 9, the 1000th flag is set to '0' in step 5112.
Proceeding to step 5115, the input numerical value is displayed in the 100th digit.

The processing described above when the 1000th place flag is 1'' 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 1" or 0" can be displayed. Also, by doing this, 0" can be displayed in the ioo and o digits.
The number of key operations required to input 1 is reduced to 11. In addition,
Even if such processing is executed, there may be a case where the value inputted below the 100th place is outside the range of the above-mentioned effective copy magnification. The processing at this time will be explained in the subroutine section of FIGS. 8 and 9.

When a value is entered in the 1000th place digit, the 100th place flag becomes '1', and when the numeric keypad is operated in this state, 10
A numerical value corresponding to the operated key is input to the 0th place digit, and in step S11, that numerical value is displayed, and in step 5116, a process is executed in which the 100th place flag is set to O" and the 10th place flag is set to l". . Enter the 10th place below,
The first place is also entered using the numeric keypad.

The flowchart of FIG. 8 shows the process of storing the numerical values input and displayed in the process of FIG. 7 in the memory corresponding to the selection key to be operated next.

In step 5201, it is first determined whether the mode is the first magnification setting mode or the second magnification setting mode. Since step 5201 is executed only when either flag A or B is 1'', for example, only a determination as to whether flag A is 1'' is executed, and flag A7% is ``1''. If so, it is the first magnification setting mode, so the process advances to step 5218 and subsequent steps to determine the operation of the first selection key group 95 to 98. If the flag input is not 1", that is, if flag B is 1", Since it is the second magnification setting mode, the process advances to step 5202 and subsequent steps in which the operation of the second selection key group 100 to 103 is determined.

In the process shown in FIG. 8, 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 outside the permissible copy magnification range may be displayed.

Therefore, in the process of FIG. 8, after determining the operation for each year, the subroutine shown in step 5203 is executed to prevent numerical values outside the permissible range from being stored in the memory. The process of step 5203 is shown in FIG.

In FIG. 9, if the display is not "O", step 52
In step 5230, it is determined whether the displayed numerical value is smaller than 0.647, and if it is smaller, the display is set to 0.647 in step 5231. Also, in step 5232, it is determined whether the displayed numerical value is greater than 1.414, and if it is a dog, the displayed value is changed to 1.414 in step 5233.
shall be.

Therefore, to explain in relation to FIG. 8, 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 stopped. Stores the numeric value 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 first magnification setting mode, and flag B is set to 0'' in the second magnification setting mode, and the process advances to step 8206.

Steps 5206 to 5208 show processing when the clear stop key 91 (see FIG. 2) is operated. When the clear stop key 91 is pressed, step 520
7. At 5208, on the display device 72 "l) l)
When "b l" is displayed and flags A and B are set to "O", that is, when the clear stop key 91 is operated, the displayed value is cleared and the magnification setting mode is canceled. Ru. Therefore, the numerical value "1" displayed thereby is 1" as the standard setting value for the number of copies.

Figures j-O and 11 respectively show the second selection key group ioo.
103 and the first selection key group 95 to 98 are operated.

In FIG. 10, 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. 2) is lit, and then the second CPU 2 uses the numerical value stored in the memory as magnification data.
02 and proceeds to step 5406 in FIG.

In FIG. 11, when any of the selection keys 9b 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 7. 5402.5408.5415 and 54
20, the numerals placed in the corresponding memos 1JQ5 to Q8 are displayed on the display device 72. This display is
For example, the setting is such that this is performed only when each key is pressed, and when the key is released, the number of copies set in another storage device is recalled and displayed on the display device 72. The numerical value stored in the memory is transferred to the second CPL] 202 as magnification data.

Next, the priority magnification key setting routine in step S7 in FIG. 4 will be explained.

As shown in FIG. 12, in step 5701, it is determined whether the priority magnification setting switch 108 (FIG. 1) is on. When this priority magnification setting switch 108 is turned on in the normal mode, that is, the mode in which priority magnification setting is not performed, the numerical display device 72
Display "ru.

Further, when the switch 108 is turned on during the priority magnification setting mode, the code set with the numeric keypad in step 5707 is stored in the magnification key memory of the RAM 203 (FIG. 3).
1" on the numerical display device 72 in steps 5708 and 5709.
Display. Note that since the RAM 203 is backed up by a battery as described above, data once stored is stored until it is reset.

In step 5710, it is determined whether or not there is input using the numeric keypad. If there is input using the numeric keypad, it is determined in step 5711 whether or not the mode is the priority magnification setting mode. If the mode is not the priority magnification setting mode, the number of copies is determined in step 5712. Set. When it is determined in step 5711 that the mode is not the priority magnification setting mode, the manual input of the numeric keypad from step 5713 onward is displayed. When the human power on the numeric keypad is "1" in step 5713, the numerical display device 72j displays "1" in step 5714, and when the human power on the numerical keypad 72j in step 5715 indicates "2", the numerical display device 72 displays "2l" in step 8716. .F, step 8717
-5728, when the human power of the numeric keypad is 3" to "8", '3' to '8' are displayed on the numerical display device 72, respectively. 1'' to ``8'' of the numeric keypad correspond to the magnification keys ``A'' to ``H'', respectively.Next, when the clear stop key is turned on in step 5729, if the clear stop key is turned on in step 5730, if it is not the priority magnification setting mode, the step At steps 5731 and 5732, 1'' is displayed on the numerical display device 72, and when in the priority magnification setting mode, “P” is displayed on the numerical display device 72 at steps 5733 and 5734, and the process returns to the main routine.

In the above explanation, the priority magnification keys are A and B.

C, I), Jζ, F, G, H, for example, A is 1.000 times, I3 is 0.7
07x, C is 0°816x, I) is 1.414x, E
-H is the arbitrary magnification key, and A-H is the memory Q1~
This means that it corresponds to Q8.

FIG. 13 is a flowchart showing an example of controlling the copying operation of the copying machine. This will be explained with reference to the time chart of FIG. 14.

In block 10, when the print switch is turned on, the main motor Ml, the developing motor M2 . obi rectangle,
Charger for 12. The transfer charger 14 is activated, the copy flag is set to "1" which means that the copy operation is in progress, and the control timers T'-A and T-B are started. Turn on the paper feed roller clutch.

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-1'-B has ended, and the scan motor r%/13 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
3 is turned on, and a process of setting a 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 charging, scan motor, and timing roller clutch are turned off. 46, ri (7-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 foot 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 is turned off.
-D is set.

In block 16, it is determined that the timer T-D has ended, and the main motor M1 is turned off. Further, a block 17 for setting an auto-reset timer executes processing for various outputs.

Note that the timers TA, TD, etc. explained in the above flowcharts and time charts are incremented by ``1'' in one routine of the MC5Q process executed within the time specified by the internal timer. This is a digital timer that is programmed into the timer, and the time-up time is stored as numerical data.

As described in detail in Section 2, in the present invention, a specific copying magnification is arbitrarily selected from a plurality of copying magnifications, and the selected copying magnification is set when the temporary copying reed is powered on or auto-reset. Now, if I want to copy at the desired magnification, do I need to set the magnification every time I turn on the power or perform an auto-reset?'! ! 4 (, the operation is 1141
It is possible to prevent erroneous copying.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an example of a copying machine to which the present invention is applied;
Fig. 2 is a plan view showing the operation panel in the 1st section, the third part is a block diagram showing an embodiment of this invention, and Fig. 4 is a flowchart showing the general operation of the main part of this invention. FIG. 5 is a flowchart showing the initial setting routine, FIG. 6 is a flowchart showing a specific magnification setting program, FIG. 7 is a flowchart showing an example of a method of displaying the set magnification, and FIG.
The figure is a flowchart showing the details of the setting program for the magnification, FIG. 9 is a flowchart showing the details of the subroutine in the setting program of FIG. Flowchart showing readout program, 12th
The figure is a flowchart showing the priority magnification key setting routine.
FIG. 13 is a flowchart showing the copying operation, and FIG. 14 is a wave chart showing the main part of the copying operation shown in FIG. 13. 80-89...Numeric keypad, 108...Priority magnification setting switch, Q1-Q8...Memo 1.

Claims (1)

[Claims] (1) A function that selects a predetermined copying magnification from among multiple copying magnifications and performs a copying operation, and a function that allows a certain amount of time to pass after the power is turned on or after the completion of a copying operation, or when no operation is performed on the copying machine for a certain period of time. A copying machine having a function of setting a fixed copying magnification at the time of auto-reset, which is when the copying magnification does not occur, includes a magnification selection means for arbitrarily selecting a specific copying magnification from the plurality of copying magnifications, and a copying ratio selected by the magnification selection means. storage means for storing the specific copying magnification, and when the specific copying magnification is stored in the storage means, when the copying machine is powered on or when the copying machine is set on the O1-IJ, the memorized copying magnification is stored as the copying magnification; 1. A control mechanism for a copying machine, comprising: control means for setting a specific copying magnification.