JPS615261A - Copying interruption controller - Google Patents

Abstract

PURPOSE:To make interruptive copying possible by providing a continuous copying machine with a copying stop means and a memory and interrupting copying to execute copying in another mode by a stop command and restarting original copying in accordance with information in the memory after interruption. CONSTITUTION:If the urgent request of interruptive copying occurs when originals whose number is set by a ten-key 21 and is displayed on a display part 25 are continuously copied, a stop key 23 is depressed to stop temporarily copying, and a 1/R key 22 is depressed to light it. Copy information (the size, the copy end number displayed on a display part 26, etc.) of copying executed at the present is stored in an incorporated RAM, and copy information of interruptive copying is inputted by the ten key 21 and is displayed on the display part 25, and a copy key 24 is depressed to start interruptive copying. Copy information of interrupted copying is displayed automatically after interruptive copying, and the copy key 24 is depressed again to copy left originals. Thus, the copying operation is simplified to improve the use efficiency of the copying machine.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a copying apparatus capable of continuous copying. Conventionally, when a high-priority copy was requested while copying multiple copies, copying was stopped once, the high-priority copy was interrupted, and the key was pressed again after the interrupt copy was completed. The user had to count the number of copies, set the number and size of copies, and then continue copying the original number of copies. However, in this case, there is a drawback that immediately after interruption due to an interrupt, the value and display of the set number of copies and the number of copies completed up to that point disappear, and the user has to memorize them.

When a large number of copies are to be made, interrupt copying is required not only once but several times.
Managing them is a complicated task.

The present invention is key to eliminating the above drawbacks.

etc., and another copying mode (number of copies,
It has a control means that performs copying in that mode based on the specification of the copying mode (size, etc.), and automatically returns to the copying mode (set number of copies, size, number of copies completed so far) after copying in that mode. .

In addition, a different copy mode is displayed by interruption, and after the interruption, the copy mode before the interruption is automatically displayed.

Further, it has a plurality of copy interruption command means, the first interruption command means enables designation of another mode, and the second interruption command means cancels the mode designation.

This will be explained in detail below with reference to the drawings.

FIG. 1 is a sectional view of a copying apparatus according to the present invention.

The surface of the drum 11 is made of a three-layer photoreceptor using a CDS photoconductor, is rotatably supported on a shaft 12, and starts rotating in the direction of an arrow 13 in response to a copy command.

When the drum 11 rotates to the normal position, the original placed on the original platen glass 14 is illuminated by an illumination lamp 56 that is integrated with the first scanning mirror 15, and the reflected light is
Scanning is performed by a first scanning mirror 15 and a second scanning mirror 17.

By moving the first scanning mirror 15 and the second scanning mirror 17 at a speed ratio of 1:1, the original is scanned while the optical path length in front of the lens 18 is always kept constant.

The reflected light image passes through the lens 18, the third mirror 19, the fourth mirror 20, and is formed on the drum 11 by the exposure section 21.

The drum 11 is charged (for example, +) by a negative charger 22.
After that, in the exposure section 21, the image illuminated by the illumination lamp 16 is subjected to slit exposure.

At the same time, charge removal of the opposite polarity (for example -) to the AC or - is performed using the charge eliminator 23, and then the entire surface exposure lamp 2
4 forms a high-contrast electrostatic latent image on drum 11. ! ! The electrostatic layer sr± on the optical drum 11 is then visualized as a toner image by the developing device 25.

Transfer paper 27-1 in cassette 26-1 or 26-2
Or 27-2 is paper feed roller 28-1 or 28
-2 into the machine, approximate timing is determined by the first register roller 29-1 or 29-2, accurate timing is determined by the second register roller 30-2, and then sent toward the photosensitive drum 11.

Next, the transfer paper 27 is passed between the transfer charger 31 and the drum 11.
The toner image on the drum 11 is transferred onto the transfer paper while the drum 11 passes through the transfer paper.

After the transfer is completed, the transfer paper is guided to the conveyor belt 32 and further to the pair of fixing rollers 33-1, 33-2, where it is fixed by pressure and heat, and then discharged onto the tray 34.

After the transfer, the surface of the drum 11 is cleaned by a cleaning device 35 composed of an elastic blade, and the process proceeds to the next cycle.

If the transfer gate is skewed or twisted after feeding the paper from the cassette, the transfer paper will not be stuck in each conveyance roller such as roller 29-1, 29-2, 30, etc., and it will get jammed near those rollers. However, this condition is detected and a jam is displayed.

A clock pulse source 39 generates a series of pulses C and P by drum rotation, and determines the operation timing of the load.

FIG. 2 shows the operation section of this copying machine.

The operator can set the desired number of copies up to 99 on the display 25 by pressing the numerical keys 21 from O to 9. Note that when the power is turned on, 1 is displayed on the display 25, and if only one sheet is to be copied, it is not necessary to input the number keys.

The "CLEAR" key is used to set the contents of the set display 25 to 1. The "C0PY" key is used to copy only the desired value shown on this display 25. When this key is pressed once, the machine enters the copying operation, and when the optical system reaches the inversion position, The value on the display 26 is increased by +1 from -0. When the set value on the display 25 matches the value on the display 26 indicating the number of copies, the copy operation mode changes to the post-rotation end mode.
Then, when the copying operation is completed and the photosensitive drum stops, the display 26 is returned to "o". Therefore, since the value initially set with the keys still remains on the display 25,
If you want to make the same number of copies of another original, click "'" again.
Just press the ``Copy'' key.During the copy operation, when the count value does not reach the set number, press the ``STO'' key.
When the ``P'' key is pressed or any of the display groups 24 lights up, the copying operation for one sheet at that point is completed and the process cycle is ended.Therefore, for example,
If the above state occurs when the count value is ``3'' for the set value ``6'', the display 25 will be ``6'' and the display 26 will be ``6''.
It is stationary at 3''. When all stop conditions are lifted °
You can start from the same state by pressing the "copy" key. 'I/R' for this interrupt copy
This can be done using a key. If the second operator wants to interrupt the copying of 2 sheets when the first operator is copying with the setting value "'6" and the count value "°3", "I
/Press the “R” key and set the number “6” on the display 25.26.
” and the count value “°3°°” are saved in another memory, and the 1 display 25.26 displays “1” and “o”, and the I/
Turn on the R lamp 28. For single interrupt, “c”
If you turn on "op y", you can get only one copy.If you want to make two copies, use the number keys to input 2' as the set number, and press the "copy" key to complete the two-copy process. After this copy is completed, the numbers for the first operator, “6′° and 3°” will automatically appear on the display 25.26.
The first operator is called back to “” CO
Press the P Y” key to make copies of the remaining three pages.

The indicator lamp 28 "I/R" lights up when the 'I/R' key is pressed and goes out when 1st interrupt/interrupt copying is completed or interrupt copying is in progress/stopped.

When the "5TOP" key is turned on after this copy interrupt command is issued, the 1 interrupt can be canceled together with the number of copies.

° "JAM'" lights up immediately when a copy paper jam occurs, and shifts the copying to the end mode.

°The "TEP" display lights up when the toner in the developing device runs out, and does not affect the start or continuation of copying.

"P E P " lights up when there is no paper in the selected cassette and prohibits the start of copying or terminates the continuation of copying. The light is turned on for a certain period of time, prohibiting the start of copying, but once the temperature reaches that temperature, the start of copying (exposure) is enabled and the enabled state is maintained.

29 is a cassette upper (UP) or lower (DOWN) selection switch, and 30 is a selected size indicator.

FIGS. 3 and 4 show control circuits for executing the above operations. In the figure, M1 is a motor drive signal for rotating the photosensitive drum 11, FMI is a fan motor for cooling the inside of the machine, and S
L2 is a solenoid ON signal that lowers the paper feed roller 28-1.

CL2 is a clutch signal for rotating the Lugi roller 29-1, 29-2, CLI is a clutch for moving the optical systems 15 to 17 forward, and HVT l is a power-on signal for applying high voltage to the primary charger 22. , K2 is full exposure lamp 2
4, HVT2 is a power-on signal that applies high voltage to secondary charger 23, and CL3 is second registration roller 3.
Clutch signal to rotate 0-2, RG is cam switch 3
6 is a signal for timing the second registration on, OHP is an optical system stop signal turned on by the cam switch 37, 5TOP is a copy stop signal obtained when no paper or jam is detected, 300 is a sequence timing signal. 3. To the input signal Ko- from the pre-programmed memory, operation section, and detection section. So~S3. Central processing units 301-304, 324-32 output load control signals A-L and mutually time-series time-division signals Y using IA and IB;
6 is an inverter, 305-309, 327-328 is ant game), 310-312 is a nant gate, 313-
322 is an amplifier, 323 is an oscillator for driving an AC load, 330 is an oscillator for driving the central processing unit 300,
Signal A(L) is a rising signal of A, and A(T) is a falling signal of A. The signals A'Cr), A(L) and the full-surface exposure signal H are related to interrupt control (described later).

KA and KB are signals that specify whether the cassette is in the upper or lower stage depending on l.

Motors Ml and FMI are controlled by signal A from the central processing unit, and paper feed solenoid SL2 is controlled by signal B and stage designation signal K.
A, KB controls the second resist clutch CL3.
is activated by the signal, the forward clutch CLI is activated by the signal F, the transformer H T1 is activated by K, and the entire exposure signal H is activated by the AND of the inverted signal of signal A and the inverted signal of A.
VT2 is controlled by signal J, and second resist clutch CL3 is controlled by output signals A, B, F and detection signal RG.

The OHP is input to 52 of the processing section 300, and a copy stop signal 5TOP is input to S3.

The output signal from the output port Uo-Us is a segment selection signal for the 7-segment display 25.26, and the output signal from the output port (Ro-H3) is a digit selection signal for the display 25.26 and a switch for the key 21. It also serves as a row selection signal of a well-known matrix whose intersections are 1 and 2, and is a time-division signal for so-called dynamic key input and dynamic display.

Further, numeral 3 inputs various signals shown in FIG. 6 to the input port Ko-.

What is the state of the above input/output signals when copying?

This is clear from the time chart of FIG. 8, and the output according to this timing is generated by the program of the central processing unit 300.

A well-known microcomputer as the central processing unit 300 in FIG.
When using a computer, the internal memory is ROM, RAM, I
It has NFOT, 0UTPUT, AD・A. ROM
is a flowchart (No. 9) for executing the process sequence.
The program memory shown in the figure) is stored in a binary code microprogram format.

RAM is a data memory that stores program memory data, input signal data such as copy setting number, number of copies, etc.
PUT is the port for inputting key signals and detection signals, 0UT
PUT is an output port that latches the output signal, ADA has an accumulator function that temporarily stores data from the input port and data to the output port, a decoder function that decodes the code of ROM, ROM, and RAM.

ALU that calculates and makes logical decisions on data from the input/output board
This is a processing unit that has the following functions.

Here, the input data is processed according to the execution of the program in the ROM, is taken into the ACC in a specific step, is logically judged, and proceeds to the next step to control the copying operation load.

The flowchart of FIG. 9 is a control flow when the sequence control of FIG. 8, particularly the sequence control by interrupt input using the I/R key, is performed by a program method.

When the main switch SW is turned on, it is first determined in step 1 whether or not the optical system is at the stop position, and if it is not, A,
Turn on L and return to that position. Indicator 25 at swing 3
．． 26 is displayed as 01°00, and the number is stored in the RAM.

In step 4, cassette key 29. While determining whether the number key 21 has been input, the up/down and numerical values of that key are stored in the RAM.
and display it on the display 25, and proceed to step 5. Proceed to step 5 even if a number key is not detected, step 5
is the branching point of whether to accept the I/R key, and if the C0PY flag (sets 1 in memory) by the C0PY key is not 1, proceed to step 6, determine whether the flag due to copy completion is not 1, and if it is l Proceeding to step 7, output signals A, L, and C are turned on to start copying. Then set the copy flag to 1.In step 8, set the clock to 58.
After counting, turn on J, count 230 (the following values are CP count values), and execute the I/R branch in step 9. I
When the flag caused by the /R key, l and /R keys are not detected, a stop state is detected in step 10.

When there is a signal such as out of paper or manual input of the stop key, proceed to step 11 and turn off J, A, C, and L to stop the machine.
Return to step 4, key human power detection.

Also, when inputting the I/R key, do the same in step 4.
Return to

The next step 11' is a step of the copying cycle from the forward movement of the optical system to the reversal when the backward movement is started.

In step 12, the copy number is incremented by 1 and compared with the set number. If the copy number is not equal to 1, the process proceeds to steps 14 and 15, where I/R key-on and flag determination are performed. When there is no I/R flag or key power, the process returns to step 11' and copies are repeated until the set number is reached. If the numbers match, the process proceeds to step 17 and subsequent steps to complete the copying.

By the way, when the I/R key input is received in step 9, the process returns to step 4, proceeds to step 18 via step 5, sets the I/R flag, and sets the number of sets, number of copies, and size (upper/lower) mode. is saved and stored at another address in RAM. Then, the process returns to step 3 and the initial number and size keys are manually entered to store the interrupt mode information in the vacant RAM address. Then, the process goes through the same steps as described above to reach step 9. Since the I/R flag is set, the process advances to step 10-14, and this process is repeated to complete the set number of interrupt copies. Then, the process advances from step 12 to copy end step 17 and subsequent steps. END by step 19
Return to step 4 without setting the flag. Then, step 20 and subsequent steps are executed to return the saved numerical value to the original RAM address and display it, and proceed to step 6. Thereafter, the remaining number of copies is made in the same manner as described above, and step 19 is reached. At this time, the END flag is set, so when the process advances to step 6, the number of copies (display 26) is set to 0 (step 21).

Also, when the first I/R key is detected in step 15,
At that time, one sheet is copied, and then the process proceeds to steps 4 and 5.8 via step 19, where the copy interrupt portion is executed in the same manner as described above, and when that is completed, the remaining portions are executed.

The steps for displaying the number of settings and copies stored in the RAM are steps F and 4. Between 8 and 9, 11, 1
It is placed in front of 19 in 1'.

FIG. 4 shows a copy interrupt circuit. 41-4 in the figure
5 is a Nant gate, and 41.42 and 44.45 constitute a flip-flop (hereinafter referred to as FF). ■ is a voltage source that applies level 1, 47 is an interrupt input signal I/
An amplifier 48 and 49 are differentiating circuits that generate pulses at the rising edge and falling edge of the signal A, respectively.

If the interrupt key 22 is turned on when the main motor and fan motor drive signal A is not output now, the state of FF by game) 41.42 is inverted and 1 is output, which is applied to the above-mentioned port) K3 as the signal I/R. . At the same time, the lamp 28 is turned on via the amplifier 47. Therefore, the interrupt signal is read through the steps described above, and the set number and copy completion number are saved. - When the output signal A is generated, the output of the gate 43 is inverted to O due to its rising edge. Then, the output of the gate 44 changes from 0 to 1.

However, due to circuit 49, the input to gate 42 remains unchanged. When the interrupt copying is completed and the signal A becomes O, the output of the gate 45 becomes 1 due to the pulse caused by its fall, and the output of the gate 44 is inverted from 1 to O. Therefore gate 4
Since 1 is instantaneously assigned to 2, its output becomes 1, so the output of gate 41 changes to O, and the interrupt signal I/R
will disappear. As a result, the number of saved sets and the number of completed copies are recalled.

When the interrupt key is turned on while the A signal is being output during copying, the flip-flops (gates) 41 and 42 are set and output the signal I/R, but the states of gates 44 and 45 do not change, so the copying is completed. Even when the falling edge of signal A is input to gate 45, its output remains at l, so the states of gates 4i and 4z do not change and the I/R signal remains held. Therefore, 1 when an interrupt occurs
The process for one sheet is carried out to the end, and then the process for interrupts is carried out.

FIG. 5 shows an operation time chart of FIG. 4.

FIG. 6 is an example of another implementation circuit for a copy interrupt. The operation time chart is shown in FIG.

This interrupt is canceled by pressing the stop key to stop copying, and one of the various cancellation modes will be explained.

FFI is a flip-flop consisting of gates 61, 62, FF2 is gate) 64.65, FF3 is gate) 71.
Flip-flop consisting of 72, 63.70.73
．． 74 is Nantes Gate, 69 is And Gate, 75-7
9 is an inverter, 80 to 82 are differentiating circuits for forming trigger pulses, and KSTOP signal ° is F by the stop key.
The output signal of F3, the 5TOP signal, is a copy stop signal from the machine, and is generated by the paperless PEP of the upper and lower cassettes, jammed JAM, etc. A (L), A (
T) are the rising, falling, and falling signals of the A signal, and H is the output signal of the above-mentioned full-surface exposure lamp ON force.

Note that Key048COPY is a signal that is input when the O key is on and the RO multiplier signal is input by the 4 key and the R1 signal, the 8 key and the R2 signal, and the C0PY key and the R3 signal. The same applies to others.

In the mode (a) of the time chart, the interrupt key 22 is turned on when no process is being executed, and then the stop key 23 is turned on.
The interrupt signal I/R is canceled by turning on the interrupt signal I/R.

When the key 22 is turned on, the FFI outputs 1 and I/R is applied to the input port. If the stop key 23 is turned on before the output of FF2 changes due to A (L), FF3 is set and KSTOP is output.

Since the entire surface exposure signal H has not been output yet, gate 7
FF1 is reset by KS and TOP via 3.68, and I/R is set to O.

Therefore, what was saved by I/R is recalled again by pressing the stop key. Note that since A (L) does not occur, FF2 is not set, and since the input to the gate 72 is q, FF3 is set only while the stop key 23 is on.

In mode (b), an out-of-paper condition occurs during execution of interrupt copying, and after replenishing paper, interrupt copying is continued, and the stop key is turned on midway to cancel both interrupts.

When the key 22 is turned on, FF1 outputs 1, I/R is applied, 2 interrupt number of copies is set, and when the copying operation is started by pressing the copy button, signal A is output. Then FF2
is set. However, if the paper runs out before reaching the set number, a 5TOP signal is generated, the remaining process operations for one sheet are completed, and the continuation of copying is stopped. At this time, when the A signal falls, the A (T) signal is generated, but since all the inputs to the gate 74 are l, the output of the gate 70.69 remains l, and the FF2 is not reset. Therefore, since FF1 is not reset, it holds the I/R output.

When paper is replenished, the 5TOP signal becomes O, and when the copy button is turned on, the remaining number of interrupt copies is continued again. Signal A
When the stop key 23 is turned on during copy execution after the start of the copy operation, FF3 is set and KSTOP is output, but this is blocked by the gate 73 and the FFI is not reset. In other words, the I/R continues outputting. And the rest of the process for one sheet at that time °
is executed, and at the end of H, the output of gate 73 becomes O, and F
Reset FI and FF2.

At the same time, FF3 will also be reset. Therefore, stop key 23
The interrupt is canceled by

Next, mode C is a mode in which the stop key is not used and is the same mode as in FIG. 5.

Mode d is a case where the continuation of the subsequent interrupt copying is stopped by pressing the stop key after a stop signal such as one paper out is generated. When the stop key is turned on after replenishing paper, FF3 is set, and therefore the inputs of gate 73 become ``], and the output resets FFI and FF2. Therefore, the signal I/R is released and the evacuated memory is reset. This is to recall the contents.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of an example of a copying apparatus according to the present invention, FIG. 2 is a plan view of the operating section of FIG. 1, FIG. 3 is a copying control circuit diagram of FIG. 1, and FIGS. 4 and 6 are interrupt circuits. Figures 5 and 7 are the operation time charts of Figures 4 and 6, respectively, and Figure 8 is the operation time chart of Figure 3.
9 is a program flowchart of FIG. 3. In FIG. 2, 21 is a numerical key, 22
23 is an interrupt key, 23 is a stop key, 24 is a copy start key, 25 is a set number of copies display, and 26 is a copy number display. fII old drawing (no change in content) Figure 2 procedural amendment (voluntary)

Claims (4)

[Claims] (1) In a copying device capable of continuous copying, a means for interrupting copying and a control that when a different copying mode is specified after the interruption, copies in that mode are made, and after copying in that mode, automatically returns to the copying mode before the interruption. 1. A copying apparatus comprising: means. (2) A copying apparatus as set forth in item 1, having a copying mode indicator and displaying another mode after an interruption, and automatically displaying the copying mode before the interruption after copying in that mode is completed. (3) In paragraph (1), having a plurality of copying interruption command means, the first interruption commanding means is used to designate another copying mode, and the second interruption commanding means is used to cancel the mode designation. A copying device characterized by: (4) The copying apparatus according to item 1, wherein the mode specification is a specification of the number of copies.