JPS59151565A - Control system of image forming device - Google Patents

Abstract

PURPOSE:To attain inexpensively the smooth control with high speed and accuracy by providing a slave control means controlling a driving source and a main control means controlling the slave control means and other operations. CONSTITUTION:A main processor group 41 detects inputs from an operating panel 44 and an input device 45 to control a high voltage transformer 46 and a destaticizing lamp 28 or the like and the 1st and the 2nd sub-processor groups 42, 43. The sub-processor groups 42, 43 drive motors 31-39 via pulse motor drivers 49, 50 based on a signal from the main processor group 41. Then, the control means (processor groups) are formed in the way of hierarchy and the control means of the driving sources (motors) are used exclusively, then the high speed and smooth control is attained.

Description

[Detailed description of the invention]

[Technical Field of the Invention] The present invention relates to a control system for an image forming apparatus with a distributed driving source. [Technical Background of the Invention and Problems Therewith] Recently, it has been considered that a pulse motor is used as a driving source for an optical system, for example, in a copying machine. In this case, control of the pulse motor (double speed is required), so one processor (control + stage) can control m11 only when there are one or two pulse motors. This means that the processor does not control only the pulse motor, but simultaneously (controls the entire two-sleeve photocopier).

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This is also to do so. After that, another pulse of 7-
In the case of the first copying machine with a distributed drive source, the speed of each pulse motor cannot be controlled by a single processor, and a dedicated circuit is required for each pulse motor. It is common to control it by adjusting it. This type of control system requires two dedicated circuits for each pulse motor, which increases the cost, or makes it impossible to control each pulse motor quickly, smoothly, and with high precision. There is a problem. [Objective of the Invention] The present invention has been made in view of the above-mentioned circumstances5, and its object is to provide an image forming apparatus with a distributed driving source,
This enables high-speed, smooth, and highly integrated control of each drive source without requiring a C-dedicated circuit for each drive source. As a result, optimal control can be achieved and costs can be reduced (C is also shown in Figure 1).
The object of the present invention is to provide a control system for image forming equipment that can be used in a variety of ways. [Summary of the Invention] The present invention provides an image forming apparatus with a distributed driving source, which includes a slave control means for controlling the drive sources, and a main control means for controlling the slave control means and other functions of the image forming apparatus. By doing so, optimal control can be performed. [Embodiments of the Invention] Hereinafter, one embodiment of the present invention will be described with reference to the drawings. FIG. 1 schematically shows six copying machines with distributed driving sources according to the present invention. In other words, I is the main body of the m copying machine, and on the top surface of this main body I there is a document table (transparent glass) 2 that supports the document.
is fixed, and on this document table 2 there is 1 document cover 3.
is provided at the opening/closing mark. Then, one document set on the document table 2 is exposed to an exposure lamp 4, a mirror s,
6. The optical system consisting of y moves back and forth twice along the -F plane of the original platen 2, thereby increasing the weight of kg during the forward movement.
It's about 1m away from being phototactically eclipsed◇. In this OJ case, the mirrors 6.7 and 1.7 of the mirror 5 keep the optical path & constant. /2α) Mu> at the speed. 7J of the above-mentioned optical system: The light reflected from the bag by the lid, that is, the light irradiated by the exposure lamp 4 (the reflected light from the original 7J\ etc. is reflected by the mirrors 5, 6.7, etc.)
! It passes through the f14J lens block 8, is further reflected by the mirror 9, and is wrapped around the photosensitive drum IO, so that the image of the original is focused on the surface and concave surface of the photosensitive drum 1°. The photoreceptor drum 10 rotates in the direction of arrow C, and the surface is first exposed by the magnetizing charger ZZ, and then an image of 1 million yen is exposed to slit light. The toner is applied to this static clay body by the agglomeration device I2 (so that it is visualized from the second step).
It's turning. On the other hand, the paper P is taken out one by one from the selected upper paper feed cassette I3 or lower paper feed cassette I4 by the feed roller I5 or 16, and is taken out from the paper guide path I7 or I
81jdi and is guided to a pair of registration rollers I9, and sent to a transfer section by this pair of rollers I9. Here, each paper feed cassette 13. I4 is provided at the lower right end of the main body I at the ISl knee position, and either one can be selected on the N-indicator operation panel. Thus, the sheet P sent to the transfer section is placed in contact with the surface of the photosensitive drum 10 at the transfer band 4 device 20, so that the sheet P is transferred to the transfer band 4 device 20.
The toner image on the photoreceptor drum 10 is transferred by this action. The transferred paper P is stripped from the photoreceptor drum IO by the action of the stripping band device 2 and is conveyed through the paper conveyance path 22. The transferred image is sent to a pair of paper rollers 23, and the transferred image is fixed by passing there. After the transfer, the photoreceptor drum ro is charged with a charger 26 for static electricity removal.
After the static electricity is removed by the cleaner 27, residual toner on the surface is removed by the cleaner 27, and the afterimage is erased by the static electricity removal lamp 28 so as to return to the initial state (indicated by 29). It is a cooling fan for
An example of the configuration of the drive source for each JHV moving part of the IJ is shown in '7, and is composed of the following motors. In other words, 3I is a motor for the lens, and the eye-forming 1/1 to perform diamond magnification.
This is a specified motor that moves the digit 1t' of the lens block 8 LrII. 32 is a mirror motor that controls the distance between the mirror 5 and the mirror 6.7 (
This is a motor for changing the optical path length. 33 is a scanning motor, which connects the exposure lamp 4 and mirror 5, i
This motor is used to move the 6 and 7 parts for scanning the original. Reference numeral 34 denotes a shutter motor, which is a motor for moving a shutter (not shown) for adjusting the charging width of the phosphor drum 10 by the charging weapon II at the time of change. A developing motor 35 is a motor for driving the developing roller of the developing device 1203 and the like. 36 is a drum motor, and the photosensitive drum xoy)
! This is a motor for iμ movement. 31 is a stationary motor, which is connected to the paper conveyance path z2. This is a motor for driving the pair of rollers 23 and the pair of discharge rollers 24. Reference numeral 38 denotes a Tanabata paper feeder, which is provided with a motor for driving the side ratio roller Z5.16. This is a 39 pJ paper feed motor, and is a motor designed to drive the registration roller pair I9. The cooling fan 29 is driven by a 40fJ fan motor. Here (2, above; e-evening 3I
~34°36.311.39 is an example of a 4-phase Q'' pulse motor, and the above motors 35, ;17,4
0 is a DC brushless motor. FIG. 3 shows the overall control circuit, including a main processor group 4I and a main processor group 4I. 2nd subprocessor group 42.43
It is mainly composed of. The main processor group 4I includes an operation panel 44 and various switches -%5. A pressure transformer 46 which recognizes the human power 'x 4jX from a human power device 45 such as a sensor and drives each of the persimmon chargers. The static elimination lamp 28. The cleaning agent 27 of the cleaner 27
a. Heater 23a of the dipping roller pair 23, exposure lamp 4. And controlling each of the motors 3I to 40, etc., to perform the above-mentioned arc copying operation. 40 and the toner motor 47, which supplies and removes toner, are controlled by the main processor group 4I via a motor driver 48, and the motors 3I to 34 are controlled by a pulse motor driver The lth napgro is controlled by the tuna group 42, and the motor, 96, J 8
, 39 are controlled by the second sub-processor @j43 via the air motor driver 50. Further, the exposure lamp 4 is controlled by the main processor group 4I via the lamp regulator 51f, and the heater 23a is controlled by the heater control unit 5.
2, the main processor group 4I controls the main processor group 4I. Then, commands to drive and stop each motor are sent from the main processor group 4Z to the second sub-processor group 42*43.
, 43 to the main processor 1-g4I are sent the statuses indicating the stopped state of each motor. The Tanabata 3Z is included in the sub-processor group 42.
Detection of each initial position of 34 - 1h II'i information from the position centimeter 53 is input. The fourth factor is an example of the configuration of the main processor group 41. 62 is Tsubu Mai '7
0 Computer (hereinafter abbreviated as i & Ql)
Through the input/output water port 627, an operation panel (not shown) is used to perform human power primary knowledge and display control l'l. Further, the microcomputer 6I is expanded by input/output capotros 3-66. The input/output capotro 31 is connected to a high voltage transformer 46, a motor driver 48. A lamp regulator 51 and other outputs are connected to it, a size switch for detecting the paper size and its input are connected to the output capo 641m, and a copying condition setting switch and a number 7 are connected to the input/output capo 5. Inputs etc. are connected. Note that the input/output capotro 6 is an option. FIG. 5 shows an example of the configuration of the first sub-processor group 42. As shown in FIG. That is, 71 is a microcomputer, which is connected to the main processor group 4Z. 72 is a programmable interval timer 1J6K for controlling the phase cutoff time of the pulse motor, and when the set value is set from the microcomputer 7X, it counts based on the value C2, and when it has counted out, it is stopped.
Outputs an interrupt when ≦2. A reference clock pulse is input to the timer 72. Also, microcomputer 71
In addition to inputting the position information such as the position centimeter 53, etc., the turnout capo door 3.74 is connected. The input/output coupler door 4 is connected to the motors 3z to 34 via the pulse motor driver 49Vi.
k 2+=. The input/output coupler door 3 is used for outputting status signals of each pulse motor to the main processor group 41, etc. FIG. 6 shows a complete example of the configuration of the second sub-processor group 43. That is, 81 is a microcomputer, which is connected to the main processor group 4Z. 82 is a programmable, interval, timer for controlling the phase switching interval time of the pulse motor, and when a set value is set from the microcomputer 8I, it counts based on it, and the force output is controlled by the interrupt line of the microcomputer 8Z and the timer. Output port is fed to the input line. Further, an input/output boat 84 is connected to the microcomputer 8I, and a motor 36, 38 is connected to this input/output boat 84 via the pulse motor driver 50.
．． 39 are connected. In such a configuration, first the main processor group 41
The process will be explained using the flowchart shown in FIG. After turning on the power, the fan motor 40 is turned on, and the lens motor 31. Mirror motor 32. Scanning motor 3
3. Issue an initialization command for the printer motor 34. Then, it is checked based on the status from the first sub-processor group 42 whether or not the initialization has been completed;
When the process is completed, a heat-up check of the pair of footrest rollers 23 is performed. When the stationary roller pair 23 heats up from this check C2, it is checked whether or not the copy key has been pressed.
When pressed, the copying operation (moves). That is, first, the blade solenoid 2af is turned on, the static elimination rung 28 and the developing motor dj5 are turned on, and the drum motor 36 is turned on.
The on-order was issued. Next, the transfer charger 20 and the peeling charger 2? (turns on the fixed stone motor 37 and feeds the paper) issues a command to turn on the η motor 38. Option (2) Turn on the exposure lamp 4, turn on the paper feeder IZk, issue a command to turn on the normal rotation of the set meal motor 33, and turn on the paper feed motor 38.
A command is issued to turn off the motor 39 for feeding one sheet of paper, and a command to turn on the motor 39 for feeding one paper is issued, and the charger ZZ? ]l-Turn off. Next f: It is checked whether the scanning motor 33 has finished its forward rotation or not. If it has finished, it issues a reverse F# command to the scanning motor 33. At the same time, the exposure lamp 4 is turned off, a command is issued to turn off the paper feed motor 39, the developing motor 35 is turned off, and the standard motor 37, the transfer charger 20, and the peeling banding device 2I are turned off. Next, a command is issued to turn off the drum motor 36, and the static elimination lamp 28 and blade solenoid 27a are turned off. If several copies are to be made, the process proceeds to (2) and the same operation is repeated. Next (2.
This will be explained with reference to the flowchart shown in the figure. After the power is turned on, the receiving module waits for a command from the main processor group C to I, and when it receives it, it checks whether it is an initial setting command or not, and if it is an initial setting command DJ, it proceeds to (2). 'T, that is, after first setting the amount of movement and direction of movement of the scanning motor 33. The scanning motor 33 is turned on, and after its position sensor (home switch) is fully turned on, the scanning motor 33 is turned off. Next C2: After setting the movement amount 8 and movement direction of the lens motor 3I, turn on the lens motor 31f, and turn on its position sensor (lens switch) (Minoru turns off the lens motor 3K.Next After setting the amount and direction of movement of the mirror motor 32,
2 is turned on, its position sensor (mirror switch) is turned on, and after 7 seconds, the mirror motor 32 is turned off. Finally, after setting the amount of movement and the direction of movement of the shutter motor 34, the shutter motor 34 is turned on, the seventh position sensor (the switch) is turned on, and the shutter motor 34 is turned off. This completes the processing of the first ν]I setting command, and returns to the OJ state after the power is turned on. - 10,000, if the received command is not an initial constant command, check whether or not it is a command to turn on the shutter motor 34, and if it is a command to turn on the shutter motor 34, set the amount of movement and the direction of movement;
The shutter Itl motor 34' is turned on. Shutter motor 34. If it is not an on command, then check whether it is an on command for the lens motor 3I, and if it is an on command, set the movement direction and the lens motor 31.
? I? Turn on. If it is not a command to turn on the lens motor 3I, then it is checked whether it is a command to turn on the mirror motor 32, and if it is a command to turn on the mirror motor 32, the amount of movement and the amount of movement I'i:
Set lJ and turn on the mirror motor 32. If it is not a command to turn on the mirror motor 32, that is, if it is not a command to turn on the set meal motor 33, then set the OJ transfer spear and the moving direction t.
Turn on the set meal motor 33. Next, the operation of the second sub-processor group 43 will be explained with reference to the ninth factor (2-T flowchart 7). After the power is turned on, the command t-
Wait until the bale is received, then check whether the hμ drive start command is received (Q) or not. Check this check (if it is a drive start command from -, first check whether or not it is a command to turn on the drum motor 36), and then If it is a no-on command, drum motor 3
6f on Tru. If it is not a command to turn on the drum motor 36, then η1t is checked to see if it is a command to turn on the paper feed motor 38, and if it is a command to turn on the paper feed motor 38, the paper feed motor 38 is turned on. If it is not a command to turn on the paper feed motor 38, then it is checked whether or not there is a command to turn on the paper feed motor 3, and if it is an on command, the paper feed motor 38 is turned on. If none of these commands is given, the CPU returns to the CIJ state after turning on the power source. - 10,000, the command received above! :if4 If it is not a nephew start command, all checks are made to see if it is an off command for the drum motor 36, and if it is the off command, the drum motor 3 is turned off.
Turn off 6. If it is not a command to turn off the drum motor 36, then it is checked whether it is a command to turn off the paper feed motor 38, and if it is an off command of ;f:, the paper feed motor 38 is turned off. If none of these commands is It, the paper feed motor 3
Apply 8 coats. Figure 10 shows the control circuit of the pulse motor as a board.
4, j-purpose Ji 2 is pulse motor driver yzcs
Pulse motor driver in diagram Z3 −
49°501=equivalent) is connected to this pulse motor driver 92, and a pulse motor 93 (@pulse motors 3I to 3 (,,?) is connected to this pulse motor driver 92.
6, 3 B, ,? 9) each winding A, T;
B and b are connected. Figure 1 shows the speed control method of a pulse motor.
(Figure 83 is the speed curve of the pulse motor, and figure (b) shows the phase switching interval 111''A. As is clear from this figure, the phase switching interval is long at first. Gradually shorten it. , eventually becomes a regular interval meter, the ladle gradually becomes longer (and then stops. In other words, this shows the through-up and through-down of the Pal J Smo-yet, initially rising from the eye starting area force 1, and then stopping the commercial speed. 4I and 1st, 2nd + 42. 43 and (2), the first, second + buffer setter group 42...
43, each pulse motor 3I~34°sa, sa, 5
yy7 control, and the main processor 2r4 az r2 controls the first. 2nd + Buburosetsu + Goose 42゜43 control a + V
In addition to UJ control of other aspects of the copying machine (
The number of people going to Japan is also 0. Therefore, it is possible to perform high-speed, smooth, and accurate control of each pulse motor without having to provide a dedicated circuit for each pulse motor, which makes it possible to optimally control copying machines with distributed drive sources and to reduce costs. It should be noted that in the above embodiments, the case where a copying machine is used as a copying machine (2) is explained. In short, the present invention can be applied to any image forming apparatus having a configuration in which the driving sources of the driving section are distributed. [Effects of the Invention] As described in detail above, the present invention C2 is applicable to the driving source distributed type. In an image forming apparatus≦2, it is possible to provide a control system for image forming that also controls the bottom of each drive source, without providing a C2 ring circuit for each drive unit.

[Brief explanation of the drawing]

The diagram is for explaining one embodiment of the present invention, and the first diagram shows the schematic configuration N of the completed OJ, and the second reason is the Iit+ of the castle part.
4 power source configuration examples, the third one is the configuration diagram of the overall control circuit, Figure 4 is the configuration diagram of the main processor group QJ5, the fifth factor is the configuration diagram of the sub-processor group, and the third one is the configuration diagram of the overall control circuit. Figure 6 is a configuration diagram of the second sub-processor group, Figure 7 is a flowchart for explaining the operation of the main processor group, and Figure 8 is an explanation of the operation of the first sub-processor group.
"Flowchart," Figure 9 is a flowchart for explaining the operation of the second sub-processor group, No. 10 is a schematic configuration diagram showing the control circuit 2 of the pulse motor, and No. 11 is a flowchart explaining the speed control method of the pulse motor. It is the cause of 2...Socket stand, 4...Exposure lamp, 5.6, 7, 9
... Mirror, 8... Lens block, IO... Photosensitive drum, 16.16... Delivery roller, I9...
Registration roller pair, 23... Stationary roller pair, 31-3
4, 36, 38, 39...pulse motor, 35
, s 714 o I 4 v-=@/7ic bra t
/less motor, 4I...main processor group, 42.
43... Sub-processor group, tbr, 11.81...
・Microcomputer. 62-64.73, 74.84...I/O boat, f
/2.82...Programmable, interval. timer. Patent Attorney Suzue Takehiko Figure 6 Figure 6 Muro Figure 7 Figure 8 Figure 9 Figure 10 Figure 110

Claims (1)

[Scope of Claims] α) In an image forming apparatus having a configuration in which the drive source for the drive unit θ is dispersed, a slave control means for controlling the drive source;
A control method for an image forming apparatus characterized in that this slave control means and a main control means for controlling the UJ function 2 of the image forming apparatus are implemented. (2) The image forming apparatus θ control system according to claim 1, characterized in that a pulse motor is temporarily used as the dispersed drive source. (3) A control system for an image forming apparatus as described in the negative item of the patent application A, characterized in that each of the control means i and j is based on a one-chip microcomputer and is m+in.