JPS62118463A - Apparatus control equipment - Google Patents

Abstract

PURPOSE:To make highly accurate control and to improve reliability by making plural sub controlling section possess I/O group in common and make parallel operation following command of a main controlling section and control each I/O. CONSTITUTION:When a copy key of an operating section is depressed, output of a drum clock CLK 1 and a scan clock CLK 2 is started, and reciprocating motion is executed by a scan motor 14. When returning to home position is confirmed by an H.P sensor 21, the scan clock CLK 2 is stopped. When transfer paper is discharged to outside of the apparatus after a picture is transferred and fixed, output of the drum clock 1 is stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an equipment control device, and more particularly to an equipment control device that includes a plurality of control units and controls a plurality of input/output units at high speed.

[Prior Art] Conventionally, this type of equipment has been microcomputerized in order to enhance its functionality, but as the functionality increases, the number of objects to be controlled within the equipment also increases, and the control of these objects also increases. has come to require high-speed response. but,
When the number of controlled objects that require such high-speed response increases, time-sharing control using programs is not suitable.
Such control has been handled by using a so-called multiprocessor system in which one microcomputer corresponds to one controlled object, or by adding a dedicated hardware circuit.

[Problems to be Solved by the Invention] The conventional example had disadvantages of large circuit scale, low reliability, and high cost.

The present invention has been made in view of the above-mentioned conventional example, and an object of the present invention is to provide an equipment control device that can process a plurality of control objects with higher precision and higher speed, and has a simpler hardware and software configuration. do.

[Means for solving the problem] As a means for solving this problem, for example, the copying machine of the embodiment shown in FIG. I10 group 6.

"Operation" In the configuration shown in FIG. 1, the slave CPUs 3 to 5 share the I10 group 6, perform parallel operations according to instructions from the master CPU 2, and control each I10.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the accompanying drawings.

[Description of circuit block of copying machine (Fig. 1)] First, Fig. 1 is a block diagram showing the circuit configuration of a copying machine according to an embodiment.
In the figure, 1 is an operation section consisting of various input keys and a display section, and 2 is a master CPU that organizes the whole operation, and a ROM
2a contains control programs, data, etc. 3～
5 is a slave CPU that controls the load, and ROM3
A to 5a have the same built-in control program and control the common I10 group 6. This I10 group 6 is the master CP
It can be controlled by U2 and slave CPUs 3 to 5.

7 to 13 are load groups directly controlled by the master CPU 2, 7 is a main motor, 8 is an optical static eliminator, 9 is a charger, 10 is an exposure lamp, 11 is a developing bias, 12 is a transfer device, and 13 is a fixing device. It's a heater.

14 is a scan motor for scanning the optical system, 15 and 16 are paper feed motors for driving the paper feed roller, 17 is a registration motor for driving the registration roller, 18 is a variable magnification motor for driving the zoom lens, and 19 is for front and rear ends and site erase. This is a blank exposure.

20 is a 7-diameter thermistor for detecting the temperature of the fuser, 21 is a H, P sensor for detecting the home position (H, P) of the optical system, and 22.23 is a paper feed sensor that detects the presence or absence of paper in the paper feed cassette. , two paper cassettes are provided here, corresponding to the number of paper feed cassettes. Reference numeral 4 designates a variable power H and P sensor for correcting the absolute position of the zoom lens, and reference numeral 26 designates a registration sensor that detects whether or not the paper is accurately fed from the paper feed section to the registration roller. 35a is a toner replenishment sensor for detecting the toner ii1: in the developing device, and 37a is a D1 toner sensor for detecting the amount of toner discharged from the cleaner section.

CLKI is photoconductor 1: same JIJJ and 1 as the ram rotates.
1) CLK2 is a scan clock obtained in synchronization with the scanning of the optical system, and both are connected to the master CPU 2 and slave CPUs 3 to 5.

[Description of Schematic Structure of Copying Machine (Fig. 2)] Fig. 582 is a schematic sectional view of the copying machine, and the same parts as in Fig. f51 are indicated by the same symbols.

A document is exposed to slit light by an exposure lamp, which is one stage of document illuminators 10, and an image of the document is formed on a photosensitive drum 34 by a zoom lens 30. At this time, the reflected light of the original is reflected by the first mirror 27, the second mirror 28, the third mirror 29, the zoom lens 30, the fourth mirror 31, and so on. Fifth mirror 32, sixth mirror
The light is guided to the photosensitive drum 34 via the mirror 33.

At this time, as the photosensitive drum 34 rotates in the direction of the arrow (A), the exposure lamp 10 and the first mirror 27 move in the direction of the arrow (B). This exposure lamp 10 and the first mirror 27
The second mirror 28 and the third mirror 29 move in the same arrow direction (B) at a speed that is 1/2 of the moving speed. This is to keep the optical path length constant. After the exposure lamp 10 and the first mirror scan the length of the document, they begin to move in the direction of the arrow (C) and stop when they reach the H9P sensor 21, or repeat these operations during continuous copying.

By the above operation, an electrostatic latent image is formed on the photosensitive drum 34-1- charged by the charger 9, and the image is formed by the developing device 35. From the paper feed a cassette 40 or the paper feed b cassette 41, the paper feed a roller 38 or the paper feed b roller 3
9 feeds the paper one by one, and the registration roller 42 feeds the paper 17
The image is transferred to the registered transfer paper by the transfer device 12. Thereafter, the transfer paper transferred by the separator 36 is separated from the photosensitive drum 34, transported by the conveyor 43, and after the toner transferred to the transfer paper is fixed by the fixing device 44, it is transported outside the machine. Ru.

[Explanation of the timing of the copying machine (Fig. 1s3)] Fig. 3 is a timing chart showing the control status of the copying machine, and this is a timing chart for copying one sheet.

In the figure, various motors and blank exposure are depicted at a flat level, but in each case, these indicate timing and are different from the actual control state.

When the copy key on the operation unit 1 is pressed, output of the drum clock CLKI and the scan clock CLK2 is started, the scan motor 4 executes a reciprocating operation, and the H and P sensor 21 indicates that it has returned to the home position. When confirmed, the scan clock CLK2 is stopped. Further, after the image is transferred and fixed on the transfer paper, the paper is discharged outside the machine, and the output of the drum clock CLKI is stopped (1-).

[Explanation of operation of master CPU (FIG. 4) (FIGS. 8 to 10)] FIG. 4 is a flowchart of a control program stored in the ROM 2a of the master CPU 2.

It starts when the power switch is turned on, and first steps S
Initialize the RAM of master CPU2 and each FORT with 1,
In step S2, the operating section 1 is controlled. This performs a key check on the operation unit 1-1- and displays an appropriate display according to the mote change, etc., which will be described later.
It also displays any abnormalities in the machine.

Step S3 is a step to control the temperature of the fuser 44 to an appropriate temperature, and according to the temperature information obtained from the fixing thermistor, the temperature is 170°C during wait and 190°C during copying.
control. Step S4 is slave CPU3
In this step, which is in wait mode, mode numbers 0 to 4 shown in FIG. 8 are sequentially assigned to slave CPU 3 to slave CPU 5, and the machine status is checked and the machine is controlled. It is something.

The flow during this weight is shown in FIG. Although the numbers and mode numbers of the slave CPUs are shown as being limited in this figure, they are not limited to this. Further, in this embodiment, the mode is shifted from mode to mode when there is no abnormality, but this may also be shifted to, for example, the specific processing block η. It goes without saying that the response to an abnormality becomes faster due to the deviation, and therefore, the transition from one mode to another is not particularly limited to the examples not yet implemented.

In step S5, it is determined whether or not to start copying, and if there are no problems with the conditions on the machine or the operation unit and the copy key is turned on, the process advances to the next step S6, and if the copy key is not turned on. If there is a problem with the time or conditions, return to step 5a. In step S6, the main motor 7, which is a load that does not undergo timing control,
The device 841 turns on the electric device 9, and in step S7, the slave CPUs 3 to 5 are controlled.

In the tree step during copying, the mode numbers 0 to 9 shown in FIG.
S'flll is assigned to 5 to check the machine status and control the machine. The flow during this copying is shown in FIG. Although the numbers and mode numbers of the large CPUs are written as if they are limited in FIG. 1O, they are not limited to this.

Next, in step S8, the drum clock CLKI and scan clock CLK2 are inputted, and these values are referred to in subsequent steps.

Here, for each input of the clocks CLKI and CLK2, the drum clock counter MDC of the RAM of the master CPU2 is
NT and the scan clock counter MSCNT are incremented and cleared at a predetermined timing, and at the same time, the number of copies is also subtracted. As will be described later, this means that a part of the operation section, such as the number of copies and the copy stop key, is also managed.

In step S9, the foot monitor 44 is controlled to an appropriate temperature, and 190
It is controlled at ℃. Step SIO is a check of the scan clock CLK2, and when the value of MSCNT reaches Tl, the process advances to step Sll and the exposure lamp IO is turned on.

In step S12, the scan clock CLK2 is similarly checked, and when the value of MSCNT is T2, the process proceeds to the next step S13 and the exposure lamp 10 is turned off. As a result, the exposure lamp 10 is lit for (T2-TI)X (scan clock period).

Similarly, in step Si4, the count number of the 1ζ RAM clock CLKl is checked, and when the count of MDCNT reaches T3, the process proceeds to step S15 and the developing bias 11 is turned on. In step 316, when MDCNT indicating count f1 of drum clock CLKI reaches T4, the process proceeds to step S17 and the developing bias 11 is turned off. Here T
I<T2<T3×T4.

Step S18 is to check whether the last paper has been ejected by the paper sensor 25. If the last paper has not been ejected, the process returns to step S7, repeats the above-mentioned operation, and checks whether the last paper has been ejected or not. If so, proceed to step 319, check the drum clock CLKI, and when the count is T5 (T4<T5) proceed to the next step 320, turn off the band'il+: device, optical static eliminator, and main motor. The process returns to step S2 again and enters a wait state.

[Explanation of operation of slave CPU (Fig. 5 (a) to (b), Fig. 8 to Fig. 1O)” Part 5
Figures (b) to (i) show the RO of slave CPUs 3 to 5.
This is a main flowchart of the control blog built in M3a to 5a, and since the contents of ROMs 3a to 5a are the same, the explanation will be based on the slave CPU 3 here.

First, as in the case of master CPU 2, 'iij (not shown)
: Starts when the source switch is turned on, first step 5
In step 30, the RAM and PORT of the slave CPU 3 are initialized, and in steps 331 to S40, it is checked which mode (indicated) among the modes shown in FIG. After performing the processing of the processing path r, or if the mode has not been designated, a check is made in step S41 to see if copying is in progress, and if copying is not in progress, the process returns to step S31, and if copying is in progress or not, Then go to step S42.

In step S42, the drum clock CLKI is counted using 5DCNT and the number of copies is checked so that it can be referenced during other processing. After this processing path r, the process returns to step S31 and the operations described in section 2 are repeated. Next, we will explain the processing of each mode.

Step 3 when in mode O, which is checking toner supply.
43, and in step S4.3, the toner replenishment sensor 3
5a is on, and if it is not on, it is notified to the master CPU 2 that it is normal, and the process proceeds to step 341. If it is on, the process advances to step S44, and the toner replenishment sensor 35a is
Check whether it is turned on. If the predetermined number of times (or predetermined time) has not been reached, the process advances to step 341;
If the predetermined number of times (or predetermined time) has been reached, step S4
5, the master CPU 2 is notified of the abnormality (no toner). As will be described later, by sending data from the slave CPUs 3 to 5 to the master CPU 2, the master CPU
2, an interrupt occurs, and the mask CPU 2 processes data from the slave CPUs 3 to 5 in the interrupt processing routine.

Step 346 if mode 1 is used to check for no paper.
Proceed to and check whether the paper feed a sensor 22 is on or not.
If it is not on, it is normal to master CPU2 (paper feed a side)
It is notified that this is the case, and the process proceeds to step 341. If it is on, the master CPU 2 is notified in step 347 that there is an abnormality (no paper on paper feed a side), and the process proceeds to step 34.8, where it is checked whether the paper feed b sensor 23 is on or not, and step S46.47 Perform the same operation as tl.

Step 35 when in mode 2 to check the discharged toner
0, it is checked whether the discharged toner sensor 37a is on, and if it is not on, the master CPU 2 is notified that it is normal, and the process proceeds to step S41. If it is on, the process advances to step S51, and the operation is performed a predetermined number of times (or for a predetermined time) v[
It is checked whether or not the toner sensor 37a is turned on. If the toner sensor 37a has not reached a predetermined number of times (or a predetermined time), the process proceeds to step S41, but if the toner sensor 37a has reached a predetermined number of times (or a predetermined time), the master Notify the CPU 2 that there is an abnormality (toner discharge abnormality).

Also, when in mode 3, which controls the variable magnification lens, the 51st view (
Proceeding to step S60 of b), it is checked whether it is immediately after the power is turned on. If the power has just been turned on, the process proceeds to step S61, where it is checked whether the zoom/variable home position sensor 24 is on. If it is not turned on, step S62
Then, the CPU 2 is informed that there is an abnormality (the variable power lens is not set), and in step 363, the variable power motor 18 is driven to move the variable power lens toward the home position, and then the process returns to step 541.

On the other hand, in step S61, the variable magnification home position sensor 2
4 is on, the process proceeds to step 364, where the variable magnification motor 18 is controlled to move to the initial setting position of equal magnification, and when the predetermined position is reached, the master CPU
11- Let them know that it is normal. These are absolute position correction processes necessary to confirm the absolute position after the power is turned on, since the variable magnification lens is driven by a stepping motor.

If it is not immediately after the power is turned on in step S60, step S6
Proceed to step 5 and check whether the magnification has been changed. If the magnification has not been changed, the process returns to step S41, but if there is a request to change the magnification, the process proceeds to step 366, where it is checked whether the position has been moved to the requested magnification. If it is moving, the master CPU 2 is notified that it is normal and the process proceeds to step S41, but if it is not moving, step s6
Proceed to 7 and error occurs in master CPU2 (variable magnification lens is moving)
, and the variable magnification motor 18 is driven to move the variable magnification lens to the magnification position determined in step 36B.

In the case of mode 4 in which the home position of the scanner is checked, the process advances to step S69 in FIG. 5(C), and it is checked whether the optical system is detected by the H, P sensor 21. If it is at the home position, the master CPU 2 is notified that it is normal and the process proceeds to step S41, but if it is not at the home position, the master CPU 2
In step 571, the scan motor 14, which is a stepping motor, is driven so that the optical system moves toward the H and P sensors 21.

Next, in the case of mode 5 in which the scanner is moved during copying, the process advances to step 380 in FIG. is notified to the master CPU 2, and the process proceeds to step S41. If the end flag EFLGI is not set, step S8
1, and a reversal flag (RFLG), which will also be described later, is checked. If the reversal flag RFLG is not set, the process proceeds to step 382, where the number of pulses (number of stepping motor driving pulses) corresponding to the moving distance of the optical system is checked. If the predetermined number of pulses has not been reached, that is, if the distance equal to the document size has not been moved, step S83
Then, the scan motor 14, which is a stepping motor, is driven forward.

On the other hand, if the optical system has not moved a distance equal to the document size in step S82, the process advances to step S84 and a reversal flag RFLG is set. Therefore, through the processing up to this point, the optical system has moved forward and the exposure process has been completed.

By setting the reversal flag RFLG in step S84, it is determined that the reversal flag RFLG is on in step S81 in the next process flow, so the input button S85
The next step is to update the optical system.

The H and P sensors 21 are checked in step S85, and if the optical system has not reached the home position, step S38
After proceeding to step 6 and driving the scan motor 14 backward, the process proceeds to step 388. Further, if the optical system has reached the home position in step 385, the process advances to step S87,
Reset the reversal flag RFLG. This indicates that the backward movement has been completed and, together with the above-mentioned operation, one step of the exposure process has been completed.

Next, in step 388, it is checked whether the exposure process has been completed by checking the count value of the number of copies and the drum clock CLKI.If not, the process advances to step 341. If all processes are completed,
After sending the master CPU 2''-completion signal and setting the end flag EFT, G, step S4
Go to 1.

In mode 6, in which the paper feed a roller 38 is driven according to the paper feed a designation, the process advances to step S90 in FIG. 5(e), and the paper feed a sensor 22 is checked.

If the paper feed a sensor 22 is not on, step S92
However, if the paper feed a sensor 22 is on, the process advances to step S91, where an abnormality (no paper on paper feed a side) is sent to the master CPU 2, and an end flag EFLG2 is set. In step 392, the end flag EFLG2 is checked. If the end flag EFLG2 is set, this is notified to the mask CPU2, and the process proceeds to step 341.

If the end flag EFLG2 is not set, the process proceeds to step 393, where the paper feed a motor 15 is given the number of pulses t1 that allows the paper feed a roller 38 to move the transfer paper a sufficient distance to the registration roller. Check Taka.

If the number of pulses has reached tl, the process advances to step 898, but if the number of pulses has not reached tl, step S9
Proceed to step 4. In step S94, it is checked whether the number of pulses t2 sufficient for the paper feed a roller 38 to move the transfer paper over a distance to the registration sensor 26 installed in front of the registration roller 42 has been generated in the paper feed a motor. . If the number of pulses has not reached t2, step 397
Step S98 proceeds to step S98 to drive the paper feed motor 15.
Proceed to. In step S98, 5DCNT, which counts the number of copies and the drum clock CLKI, is checked to see if paper feeding has been completed. If it has not been completed, the process advances to step S41; if it has been completed, the master CPU
After notifying completion to step 2 and setting the end flag EFLG2, the process advances to step 341.

On the other hand, if the number of pulses has reached t2 in step 394, the process proceeds to step 395, and the 1/JIS I sensor 26 is checked. If the registration sensor 26 is not turned on, the process proceeds to step S96, where the master CPU 2 is informed that a jam has occurred in the paper feed section a, and an end flag EFLG2 is set.

Similarly, FIG. 5(f) shows an operation flowchart of mode 7 in which the paper feed roller 39 is driven according to the paper feed specification. Step 5100 to Step 3108 in this diagram
The operations are steps 390 to 39 in FIG. 5(e).
Since it is almost the same as 8, it is omitted here.

When the registration roller 42 is driven in mode 8, the process proceeds to step 5iio in FIG. 5(g), and step Sl 10
Then, the end flag EFLG4, which will be described later, is checked. If the end flag EFLG4 is set, step S4
Go to 1. If the end flag EFLG4 is not set, the process advances to step 3111, and it is checked whether the number of drive pulses of the paper feed motor 15 or 16 has reached t5, that is, whether the transfer paper feed amount is sufficient. If the number of pulses has reached t5, the process advances to step 5112, and if the number of pulses has not reached t5, the process advances to step 3116.

In step 5112, the number of pulses (the number of drive pulses of the paper feed motor 15 or 16) t6 corresponds to a distance sufficient for the trailing edge of the transfer paper to leave the registration sensor 26 after the transfer paper is fed.
Check. If the number of pulses has not reached t6, the process advances to step 3115, and if the number of pulses has reached t6, the process advances to step 5113. In step St13, the registration sensor 26 is checked, and if the registration sensor 26 is not on, the process advances to step 5115, but if the registration sensor 26 is on, step 511
Proceed to step 4. Abnormality in master CPU 2 (registration section jam)
is sent, the en1ζ flag EFLG4 is set, and the process advances to step S41.

In step 5115, the registration motor 17, which is a stepping motor, is driven, and in step 5116, the number of copies per copy is checked and the drum clock CLKI is checked to see if the registration has been completed. If not, the process advances to step S41. If completed, a complete T signal is sent to the mask CPU 2, the end flag EFLG4 is set to zero, and the process advances to step 341.

In mode 9, which is the mode for driving the 192-dot blank LED, the process advances to step 3120 in FIG. 5(h), and EFLG5 of the end flag RAM 300, which will be described later, is checked. If the end flag EFLG5 is on, the process proceeds to step 341, and if the end flag EFLG5 is not on, the process proceeds to step 5121.

In step 5121, the content of 5DCNT that is counting the drum clock CLKI is checked, and a check is performed at t7 until the count (drum clock) reaches the leading edge of the document. If the count is less than 17, the process advances to step 5124 because the leading edge of the document has not been reached. If the count is t7 or more -1-, proceed to step 5122;
Check the time t8 until the count [drum clock] reaches the leading edge of the original (t7 or more) and the trailing edge of the original (less than 18).

If the count number is 18 or more, the process advances to step 5123, and the time t9 until the count number (drum clock) is cleared from the trailing edge of the document (18 or more) to 5DCNT is checked. If the count number of 5DCNT is t9, proceed to step 5127; otherwise, proceed to step 51
Proceed to 24.

In step 5124, a take for lighting all dots for blank exposure is prepared. This erases the front and back of the original in the electrostatic latent image on the photosensitive drum.

After this, the process advances to step 5127. Also, if the count number is less than 18 in step 5122, step 5125
In step 5126, the size (side) of either the original or the transfer paper is encoded (temporarily encoded because the blank exposure is time-division driving), and the encoded take is prepared in step 5126. In step 5127, the number of copies is counted (fi and the drum clock CLKI are checked, and it is checked whether the blank exposure is completed. If it is not completed, the process advances to step S41. If it is completed, the master CPU 2 Notify completion to the end flag E F L
After setting G5, the process advances to step S41.

[Explanation of interrupt processing routine of master CPU (Figure 6)
] FIG. 6 shows an interrupt processing routine of the master CPU 2, which is activated when the slave side returns to normal or when an abnormality occurs.

First, in step 5130, which slave was selected is stored in a predetermined register, and step 5131
Set which mode was selected in a predetermined register. These takes are referred to when controlling the operation unit in step S2 of FIG. 4, and are used to display the status of abnormality or normal recovery.
In step 4, mode selection of the slave CPUs 3 to 5 and others is stopped, and fixed control is performed until normality is restored.

Next, in step 5132, it is checked whether copying is in progress or not.
If copying is not in progress, the process advances to step 5138, and a return command is issued to end the mask interrupt processing routine. If copying is in progress, proceed to step 5133 (abnormal condition)
l: Check whether there is a serious abnormality or a problem. If the abnormality is serious, the process proceeds to step 5135, if it is a minor abnormality, the process proceeds to step 5134, and since it is a minor abnormality, a last copy cycle is set to terminate each process currently being executed, and the process proceeds to step 3138 described above. .

Step 3135 is a serious abnormality, so the full load is immediately reset, and step 5136 is to reset the drum clock counter MDCNT and scan clock counter MSCNT.
stop counting.

At step 5137, the drum clock counter MDCNT
The value of is set in T5, and the mask interrupt processing routine ends with a return instruction in step 3138.

[Explanation of slave CPU interrupt routine (Figure 7)] Figure 7 shows the interrupt processing routine on the slave side.
Since group 6 is commonly used, the basic clock on the slave CPU side is transmitted from master CPU2 to each slave CPU3~
It is activated by a signal sent to 5 in time division.

First, in step 5140, the output take is output to the I10 group 6, and in step 5141, the mode is checked. If the mode is O-2, the process proceeds to step 5143, and a return command is issued to end the slave interrupt processing routine. Also, in step 5141, mode 3 to mode 9
If so, proceed to the next step. At step 5142, the number of interrupts is counted, and at step 5143, a return instruction is issued to end the slave interrupt processing routine.

To explain in detail the content proposed in this embodiment, the clock generated in accordance with the rotation of the main motor, which is the controlled object, is commonly input to each slave, and even if the mode changes, the clock is counted as an event. Since it is possible to know the absolute number depending on the situation, mode switching or slave CPU
There is no need to select the operation in synchronization with the flow of the sequence, making it extremely easy to operate.

As described above, according to this embodiment, highly accurate control is possible, high reliability is obtained, and high-speed parallel processing is possible.

``Effects of the Invention'' As described below, according to the present invention, the sub-control section can be created in common, so that the hardware configuration and software configuration can be simplified.

[Brief explanation of drawings]

Figure 1(a) is a block diagram showing the circuit configuration, Figure 1(b)
) is the RAM configuration diagram of the slave CPU, Figure 2 is a schematic cross-sectional view of the copying machine, Figure 3 is the timing diagram showing the on/off of the load in a predetermined mode, and Figure 4 is the main diagram showing the processing of the master CPU. Flowcharts, Figures 5(a) to 5(h) are main flowcharts 1 and 5 showing the processing of the slave CPU, Figure 6 is a flowchart of the interrupt processing routine of the master CPU, and Figure 7 is the interrupt processing routine of the slave CPU. FIG. 8 is a diagram showing the control mode, FIG. 9 is a diagram showing the mode transition of the slave CPU during wait, and FIG. 10 is a diagram showing the mode transition of the slave CPU during copying. In the diagram, l...Operation unit (key group & display) 1, S
D 2...Master CPU, 3-5...Slave CPU,
6... I10 group, 7... Main motor, 8... Optical static eliminator, 9... Charger, 10... Exposure lamp, 11
...Development bias, 12...Transfer device, 13...Fixing heater, 14...Scan motor, 15...Paper feed a motor, 16...Paper feed B motor, 17...Register Motor, 18... Magnification variable motor, 19... Blank exposure, 20... Fixing thermistor, 21... H, P sensor, 22... Paper feed a sensor, 23... Paper feed b sensor , 24... variable magnification H, P sensor, 25... sheet discharge sensor, 26... registration sensor, 34... photosensitive drum, 35... developer, 35a... toner replenishment sensor,
42... Registration roller, 43... Conveyance section, 44...
...It is a front organ.

Claims (1)

[Claims] An equipment control device that includes a main control section, a plurality of sub-control sections, and a plurality of input/output sections and performs control based on control information from the main control section, wherein the plurality of sub-control sections are substantially equivalent. An equipment control device characterized in that the plurality of input/output sections are shared and the plurality of input/output sections are operated in parallel based on the control information, and the sub-control sections are provided with substantially the same circuit and substantially the same control program.