JPS61156062A - Copying machine - Google Patents

Abstract

PURPOSE:To make operation easy and to reduce the loss time of a copying device by forming a multi-copying means, a control means for accepting the interruption copying of another original during multi-copying and releasing the interruption after the completion of the copying and an original storing means. CONSTITUTION:If an interruption key 90 is depressed when an interruption display 90a is ON and copying is not executed, the display is turned off and an interruption signal is turned to phi. When the exposure data 96a for the num ber of copied sheets stored at the start of interruption is ON (automatic expo sure mode) and an original saving flag is '1' (the original is saved in an inver sion unit), the original shunting flag and the signal are turned to '0' and a preparatory scanning unrequiring flat is turned to '1'. Namely, interruption is executed at the time of copying in the automatic exposure mode, the original is saved on the inversion unit, and after release of the interruption, the original is returned to the copying position.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a copying apparatus having a multi-copy function for making multiple copies of the same original, and an interrupt function for copying other originals during multi-copying. .

Conventional technology In this type of copying device, when an interrupt copy is made during multi-copying, conventionally the original used for multi-copying is ejected from the direct copying device, and the original for interrupt copying is set in the copying device. After the interruption copying is completed, there is an inconvenience in that the original for multi-copying must be manually set in the copying machine again.

In addition, when an interruption occurs near the end of multi-copying, the original for multi-copying does not have to be returned to the copying device, which may be difficult for the user to operate.

Regarding processing when there is an interrupt copy during multi-copying, the method disclosed in Japanese Patent Application Laid-Open No. 121058/1980, for example, merely has a function to display automatic document feed, and does not have the above-mentioned drawbacks. It doesn't solve anything.

Furthermore, in conventional copying machines, if there is an interrupting copying person during copying, when the interrupting person finishes copying, the original operator manually returns the original onto the original glass as described above, and then presses the print button. Press to resume copying. If the original copyer stays close to the copying machine during the interrupt copy and performs the above operations immediately after the interrupt copy is completed, there will not be a large loss of time, but there is no way to know how long the interrupt copy will take. If a relatively long period of time has passed since the original operator left the copying machine, a large amount of time is lost because the original operator is slow to return even though the actual interrupt copying has finished immediately. That's what happened.

Purpose of the Invention This invention provides that when an interrupt copy occurs during multi-copy,
It is an object of the present invention to provide a copying apparatus that can automatically send the original document to a copying position when the interruption copying is completed, and copy the remaining number of sheets.

Structure of the Invention The copying apparatus of the present invention includes a multi-copy means for making multiple copies of one original, and a multi-copy unit that accepts interruption copying of other originals during multi-copying and cancels the interruption after the copying is completed. a control means for enabling the copying of the original; a document holding means provided at a position away from the original copying position for holding the one original; and when an interruption occurs during multi-copying, the one original is held until the interruption is canceled; The apparatus is characterized by comprising means for retaining the original in the original holding means and feeding the one original to a copying position after the interruption, and a control means for copying the remaining number of sheets of the one original. do.

Example An embodiment of the present invention will be described below.

FIG. 1 shows a schematic configuration of a copying machine. Copy machine body 1
A photoreceptor drum 1 that can be rotated counterclockwise is disposed approximately in the center of 00, and around it are an eraser lamp 2, a charger 3, a developing device 4, a transfer charger 5, a separation charger 6, and A cleaning device 7 is provided.

The photoreceptor drum I has a photoreceptor layer provided on its surface, and this photoreceptor is sensitized and charged by passing through the eraser lamp 2 and charger 3, and receives image exposure from the optical system IO.

The optical system IO is installed below the original glass 11 so that the original image can be scanned, and includes a light source 12 and movable mirrors 13 and 14.
．． 15, a lens I6, and a mirror I7. The light source 12. The movable mirror 13 is a photosensitive drum l
Peripheral velocity (V) (equal magnification).

(constant regardless of magnification), the movable mirror moves to the left at a speed of (v/n
is driven by a motor (not shown) to move leftward at a speed of (v/2n).

On the other hand, on the left side of the copying machine main body 100, automatic paper feeding sections 20 and 22 are installed, each having paper feed rollers 21 and 23. The roller 31 is composed of a conveyor belt 33, a heat roller 32, and a discharge roller 34.

The general operation of the copying machine shown in FIG. 1 is as follows.

When copying is started, the copying machine operates the rollers 21 or 23 and the intermediate roller 30 to convey the copy paper to the front of the timing roller 31. At this point, the copy paper is temporarily stopped. At this time, the paper detection sensor 51 is turned on.

When the copy paper is conveyed to the timing roller 3I, image forming processing is started. Here, the image forming process is to scan an original with an exposure lamp, expose the photoreceptor drum l uniformly charged with the charger 3 with reflected light from the exposure lamp, and use the developing device 4 to expose the photoreceptor drum l uniformly charged with the photoreceptor drum l. The above electrostatic latent image is visualized, and the visualized image is further transferred and fixed onto copy paper.

After the image forming process is started, the optical scanning system IO moves and when the leading edge of the image on the photosensitive drum l and the leading edge of the copy paper match at the position of the transfer charger 5,
The registration switch SEI is turned on and the timing signal is “
Set it to B. Then, the intermediate roller 30 and timing roller 31 are operated to restart conveyance of the copy paper. and,
The image is transferred to copy paper. The copy paper on which the image has been transferred and the image has been thermally fixed by the heat roller 32 is conveyed to the ejection switch.
When the ejection switch detects the trailing edge of the copy paper, the copying machine ends the copying operation after a certain period of time.

300 is an automatic document feeder (hereinafter referred to as ADF);
10 is a sensor for detecting whether a document has been fed; 3;
Reference numeral 11 is a sensor for detecting whether or not there is a document in the document tray. 301 is a motor for rotating the document conveyance belt 320 of the ADF 300, and 302 is a motor for feeding the document from the document tray. 312 is a sensor that detects whether a document has passed. 304 is a solenoid that operates a switching plate 305 that switches between ejecting the original and sending the original to the original reversing unit 321;
3 is a motor for driving the document reversing unit 321.

In the above configuration, when the document is reversed, it is sent through the document conveyance belt 320 to the belt 321, where it is reversed and sent to the document tray again.

In FIG. 1, 925 is a document density sensor.

FIG. 2 shows the arrangement of 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, and a jam indicator 73 that lights up when a paper jam occurs. ..., numeric keys 80 to 89 corresponding to the numerical value of 9.0, an interrupt key 90 for specifying interrupt copying, a clear/stop key 91, and up and down keys 93 for changing/specifying the copy image density step by step. , 94, etc. are arranged. 95 is an electronic counter check switch.

92 is a key for selecting the copy paper size; 92a;
~92d is the display. 95 is a key for instructing whether to copy both sides of the original; 95a is a duplex copying indicator;
96 is an automatic exposure key, 96a is its indicator light, and 73 is an exposure indicator light.

FIG. 3 shows a control circuit used in the copying machine according to the present invention, in which 202 is a second CPU that controls the optical system;
The first CPU 202 controls the second CPU 202 connected to the interrupt terminal INT and the data input terminals Sin and 5out.

Furthermore, 203 is a battery-backed RAM.

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 zooming, and 207 is a decoder. Note that the output terminals AI to A7 are connected to the main motor Ml, respectively.
, developing motor M3, timing roller clutch CLI,
It is connected to each drive switching transistor (not shown) of the top picture paper clutch CL2, the bottom picture paper clutch CL3, the charger 5, and the transfer charger 7.

Various data for copying operation control is written into the RAM 203, or data shifted from the ROM in the CPU is also stored.

FIG. 4 shows a CPU 220 that controls the ADF 300 and communicates with the CPU 201 via a bus 221.

Next, the main parts of the copying operation by the CPUs 201, 202, and 220 described above will be explained according to the attached flowchart.

FIG. 5 shows a schematic flowchart of the CPU 201.

When the CPU2011 is set and the program starts, the CPU clears the RAM, sets various registers, etc.
Initialize the U and make initial settings to put the device in the initial mode (step SO). Next, CPU201
The internal timer, whose value has been set in advance in the initial settings, is started in step Sl.Next, the subroutines of steps 83 to S7 shown in the flowchart explained below are sequentially called. When all the subroutine processing is completed, in step S8, wait for the end of the internal timer set first!The routine is ended and the process returns to the processing of the first internal timer set.The length of time of this one routine is used. - and counts the various timers that appear in the subroutine. (The various timer values determine the end of the various timers depending on how many times this l routine is counted.) In addition, the CPU 201 counts the various timers that appear in the subroutine. After calling , data communication with other CPUs 202 and 220 is performed.

In FIG. 6, if the double-sided copy indicator light 95a is ON (selected) at the ON edge of the double-sided original selection switch 95, the double-sided original signal is set to 0FFL.

If 95a is OFF, it is turned ON and the double-sided original signal is set to 1.

FIG. 7 shows the dimming routine.

When the ON edge of the automatic exposure selection switch 96 is detected in step S31, the automatic exposure display 96a is turned on and off. When 96a is OFF, that is, during annual exposure,
The exposure data is incremented at the ON edge of the exposure up switch 93.

Also, when the value becomes 9 or more, it is corrected to 9.

Similarly, it is decremented at the ON edge of the exposure down switch, and when it becomes 0 or less, it is corrected to O.

When the resulting exposure data is output to the dimming circuit,
The data value is displayed on the exposure display LED array 73 by the dimmer circuit, and when an exposure lamp lighting signal is received, the lamp is lit while adjusting the lamp voltage based on the data.

FIG. 8 shows the interrupt switch processing routine.

At the ON edge of the interrupt key 90, the interrupt indicator light 90a
If it is OF'Fj, processing to enter interrupt mode is performed. In step S41, the interrupt indicator light 90a is set to ONL, and in step S42, the interrupt signal is set to 1, and then 7 segments are displayed.
The number of copies displayed on D72 and the exposure data displayed on LED array 73 are stored and saved in RAM.

Also, in step S44, whether 96a is ON or OFF (whether it is automatic exposure mode or not) is also memorized.

Next time the interrupt key 90 is pressed or the ADF300
In step S4, it is determined whether copying is in progress using
If the judgment is made in steps 5 to S47, and none of the above conditions exists, the mode is to evacuation of the original to the ADF reversing unit 321, so the original evacuation signal is set to 1, and the original evacuation flag is set to step 34.
B. Set to 1 in S49 to stop copying. That is, if the interrupt key 90 is pressed during the final scan of multi-copying, the copying process for that original has already been completed and the original can be ejected as is. However, if it is not the final scan, the document must be evacuated.

Next, if the interrupt key 90 is pressed while the interrupt display 90a is ON, the interrupt cannot be canceled during copying, so if copying is not in progress, the interrupt display 90a is turned OFF in step S52.
Set the interrupt signal to φ. Also, when entering the interrupt, it is checked in step S whether the memorized copy number exposure data 96a is ON or OFF.
Judging by 56. As a result, if 96a is ON (automatic exposure mode) and the original evacuation flag is set (the original was ejected to the reversing unit), the original evacuation flag and signal are set in step S58. The flag is set to 0 in S59 and the preliminary scan unnecessary flag is set to 1 in step S60. In this way, when copying in automatic exposure mode, an interrupt is performed and the original is transferred to the inverting unit 3.
21 and returns the original to the copying position by canceling the interruption. At this time, since the previous exposure data has been stored in the RAM in step S43, there is no need to perform a preliminary scan again to detect the document density.

FIG. 9 shows a preliminary scan routine.

If the pre-scan start flag is set to ``month'' in step S61, it is set to O in step S62 and a scan signal is output to the CPU 202. Next, in step S64, the timer AE is started, and in step S65, the sampling counter and original density counter are set to 0. This timer AE is a sampling interval timer, and the original is 10m1+
If you want to measure every time, you can set the value of 10 chu ÷ scan speed. At the end of this timer AE, step S
At step 67, a sampling counter that counts the number of samplings is incremented, and the value obtained by A/D converting the output from the original density sensor is loaded into the original density counter.

After scanning the valid image of the original, the scan signal is set to O in step S72, the value of the original density counter divided by the sampling counter, that is, the average density of the original is set as exposure data, and the preliminary scan end flag is set to 1 in step S74. do. Furthermore, if the valid images have not been scanned, the timer AE is restarted.

In FIG. 1O, when the print key 71 is turned ON, the print flag is set to 1 if the ADF is not used. A
If using DF, set the ADF start signal to 1 for the ADF.
Make it. When the print key 71 is not on the ON edge, if the ADF is used, the print flag is set to 1 when the original position signal from the ADF becomes 1 (block Bl). If the print flag is 1, the print flag is set to O, and if 96a is ON, that is, in automatic exposure mode, and the preliminary scan unnecessary flag is 0, the preliminary scan start flag is set to 1. In other cases, set the preliminary scan unnecessary flag to O.
and sets the copy start flag to 1 (block B2).

If a preliminary scan is performed in the automatic exposure mode, when the preliminary scan end flag becomes ``■'', the flag is set to O and the copy start flag is set to 1 (block B3).

FIG. 11 is a flowchart summarizing the copying operations of the copying apparatus. In Fig. 11, when the copy start flag becomes 1, the main motor/developing motor, charging/transfer exposure lamp are turned on, and if top paper feed is selected, the top paper feed roller clutch is turned on, and bottom paper feed is selected. If the lower paper feed roller clutch is turned on, the copy start flag is set to O, and T-A (timer A), T-B (
Set timer B). In block 11, T
-A is judged and when it is time for T-A to end, the upper and lower paper feed roller clutches are turned OFF. In block 12, TH is judged, and when it is the timing at which TB ends, the scan signal is turned ON. In block 13, when the timing signal becomes 1, the timing roller CL is set to ONL and TC. In block 14, at the timing when TC ends, the charging scan signal and the timing roller CL are turned off. In block 15, when the return signal is 1, that is, when the return is started, the copy start flag is set to 1 if it has not been determined whether the multi-copy portion has been copied. When the position switch is turned ON, the developing motor and transfer are set to O, and T-D is set. In block 16, the main motor is turned off at the timing when TD ends. In block 17, the results of the processing up to now are output.

Figures 17 to 20 show CPU 220 for ADF300.
shows the operation.

When the CPU 220 is reset and the program starts, the CPU is initialized by clearing the RAM 203, setting various registers, etc., and initial settings are made to put the device into the initial mode.

Next, an internal timer built into the CPU 220 and whose value is set in advance in initial settings is started.

Next, the subroutines of document control routine R1, ADF interrupt processing routine R2, and ADF interrupt release routine R3 shown in the flowchart are sequentially called, and when all subroutine processing is completed, the initially set internal timer ends. Wait for 1 routine to end. The length of time of this I routine is used to count various timers appearing in the subroutine. (The various timer values determine the end of the timer based on how many times this one routine has been counted.) Data communication with the CPU 201 is performed by an interrupt request from the CPU 201.
This is performed by an interrupt routine regardless of the main routine.

FIG. 13 shows the document control routine R1.

When there is a document in the document tray and the sensor 311 is ON,
The ADF' start signal from the CPU 201 becomes ■. Alternatively, if the document feed flag is 1 and the front side flag is 0, that is, the mode is for copying the front side of the document, the conveyor belt motor is turned on and the document feed motor is turned on (block B11). Next, in step S80, it is determined whether the double-sided original signal from the CPU 201 is 0 or 1, and then, when the double-sided original signal is 0, the original feeding processing routine R4 is performed, and when it is ■, the original feeding reversal routine R5 is performed. Next, in step S81, it is determined whether scanning has been completed for the set number of copies, and when the scanning is completed, the scan end flag is set to 1 in step S82. When the scan end flag is 1 and the double-sided original signal is O (steps S83 and 584), that is,
If the original is one-sided, the front side flag is set to O and the scan end flag is set to O in step S85, and the original discharge processing routine R6 is performed.

If it is a double-sided original, the process proceeds to step S86, and it is determined whether the front side flag is 1 or 0. If O is selected, that is, when the back side of the double-sided original has been copied and the front side flag is 0, the process proceeds to step S85, and the same process as in the case of a single-sided original is performed. When the front side flag is 1, the document reversal processing routine R7 is executed.

FIG. 14 shows the document feeding processing routine.

When the original is fed and the sensor 310 is turned on, the flag K is set to 1 and the timer At is started.

This timer AI is used to turn off the document feed motor, and a timer value is set until the document comes to the position where it is driven by the conveyor belt. If the motor continues to rotate even after the previous document has been fed, it will prevent the next document from being fed.

Next, when the flag K is 1, the OF edge of the sensor 310 comes. That is, when the trailing edge of the document is detected, the flag K is set to 0 and the timer A2 is started.

The value of timer A2 is set to a value until the trailing edge of the document reaches the predetermined position of the leading edge of the document on the document glass.

When the timer A1 ends, the document feed motor is turned off.

When the timer A2 ends, the conveyor belt motor is turned off, or a document home position signal is sent to the CPU 201.

FIG. 15 shows the document feeding reversal processing routine.

At the ON edge of sensor 310, the reverse switching clutch and reverse motor are turned on (block R51). Also, timer DI
is started, and when the timer DI ends, the document feed motor is turned off (block R52). The timer D1 is set to the time until the fed document is fed by the drive of the conveyor belt motor. Next, conveyor belt motor 3
When the ON edge of the document passage detection sensor 312, that is, the leading edge of the document comes to the reversing unit 321 side, the flag K is set to 1 (block R53). Next, when the flag K is I, when the OFF edge of the document passage detection sensor 312, that is, the trailing edge of the document has all entered the document reversing unit 321, the flag K is returned to 0, and the conveyor belt motor 30 is turned on. Reverse (block R54). Next, when the sensor 312 turns ON while the conveyor belt motor 301 is in reverse rotation, that is, when the original is reversed and comes out, the timer D2 is started (block R55). The timer D2 is set to the time from the sensor 312 until the original reaches the leading edge position of the original on the original glass. Next, when the timer D2 ends, the reversal switching clutch, conveyance belt motor, and reversing motor are set to 0FFL, and the document home position signal to the CPU 201 is set to 1 (Block R FIG. 16 shows the document discharge processing routine.

In step 590, it is determined whether there is still another document in the document tray. If there is a next document, the document feed flag is checked in step S91. If not, the conveyor belt motor 301 is rotated forward and timer B is started (step S92, 593).

Timer B is set to the time during which the original on the original glass (in the case of MaX) can be ejected. When the timer B ends, the conveyor belt motor 301 is turned off in step S94.

FIG. 17 shows the document reversal processing routine R7.

When the scan end flag is reached, the reverse coal cutting clutch is turned on, that is, the branching claw is switched to the reverse unit 321 side, the conveyor belt motor 301 is rotated forward, and the reverse motor is rotated forward (block R60). Next, conveyor belt motor 3
When the ON edge of the sensor 312 is detected during forward rotation of the document 01, that is, when the leading edge of the document comes to the reversing unit 321 side, the flag J is set to 1 (block R71). Next, when the OFF edge of the sensor 312 is detected when the flag J is 1, that is,
When the entire trailing edge of the document has entered the reversing unit 321, the flag J is returned to O and the conveyor belt motor is reversed (block R72). Next, when an ON edge of the sensor 312 is detected during the reversal, that is, when the document is reversed and comes out of the reversing unit 321, the timer C is started (block R73). The timer C is set to the time from the sensor 312 until the original reaches the leading edge position of the original on the original glass. Next, when the timer C ends, the surface flag is set to 0, the reverse coal cutting clutch is turned off, and the conveyor belt motor 3011 and the reverse motor 303 are turned off.

Then, the document home position signal sent to the CPU 201 is set to 1 (block R74).

FIG. 18 shows the ADF interrupt processing routine R2.

When a document evacuation signal is received from the CPU 201, the reverse coal cutting clutch is turned on at the ON edge, and the conveyor belt motor 301 is turned on.
, the reversing motor 303 is rotated forward (block R21).

Next, when the document sensor 312 turns ON while the conveyance belt 320 is rotating normally, that is, when the document is about to be sent to the reversing unit 3211, the flag J is set to 1 at the ON edge (block R22).

Then, when the flag J month is reached, the sensor 312 is turned off, that is, when the trailing edge of the document is detected, the flag J is set to 0, the conveyance belt motor 3011 and the reversing motor 303 are turned off, and the document is made to stand by in the reversing unit (block R23).

FIG. 19 shows the ADF interrupt release routine R3.

Turn off the interrupt signal from the interrupt key when the document evacuation signal is 1
When the edge arrives, the conveyor belt motor 301 and reversing motor 303 are reversed (block R31).

When the conveyance belt motor 301 is in reverse rotation, that is, when the original in the reversing unit is about to be sent onto the original glass, when the ON edge of the sensor 312 is detected, that is, when the leading edge of the original has arrived, timer C is set (block R32). ).

The value of this timer C is set as the time from when the leading edge of the document passes the sensor 312 until it reaches a fixed position on the document glass. Next, when the timer C ends, the reverse coal cutting clutch, the conveyor belt motor 3011, and the reverse motor 303 are turned off. Furthermore, set the original position signal to 1.

As a result, the CPU 201 starts a copy operation (block R33). That is, just by performing the interrupt cancellation operation, the original person's original document automatically returns to the original glass and copying of the remaining number of sheets is started in the mode before the interruption.

In the first embodiment described above, the reversing motor 303 is rotated in the normal direction.

Although the process of reversing the document and returning the document that was evacuated by the interrupt has been performed, if you do not want the reversing motor 303 to reverse (only forward rotation), change the ADF interrupt cancellation process in Figure 19 to the one shown in Figure 20. Good.

At the end of timer C, the original position signal is set to 1 in Fig. 19, but in Fig. 20, the original re-inversion flag is set to 1, and the original is reversed until this flag is 1 and the original position signal is exceeded. Perform routine R7. Original position signal is 1
When this happens, the document re-inversion flag is returned to O (block R3).
4).

Note that in this embodiment, the document reversing unit is activated when the interrupt is canceled.
When returning a document that has been evacuated into the tray onto the document glass, the drive of the reversing unit is reversed, but if the original is returned to normal rotation, it will be face down, and then the reversing unit will turn the document upside down again. You can do it.

Effects of the Invention As detailed above, according to the present invention, when there is an interrupt copy during multi-copy, after the interrupt copy is completed, the original copy is automatically returned to copy the remaining number of copies. This makes the operation easier and reduces the loss time of the copying device.

[Brief explanation of drawings]

FIG. 1 is a side view showing an embodiment of the present invention, FIG. 2 is a plan view of an operation panel used in the embodiment of FIG. 1, and FIG. 3 is a diagram of a control circuit used in the embodiment of FIG. Block Diagram,
FIG. 4 is a block diagram showing the ADF CPU, and FIGS. 5 to 20 are flowcharts showing the operation. 100...Copier main body, 90 interrupt key, 201.
202,220・CPU, 300-ADF, 3
21... Original reversing unit. Patent Applicant Minolta Camera Co., Ltd. Representative Patent Attorney Aoyama Aoyama and 2 others Figure 2 Figure 3511 Figure 4 Figure 5 Figure 12 Figure 16 Figure 17 Figure 118 Figure 19

Claims (1)

[Claims] (1) a multi-copy means for making multiple copies of one original; a control means for accepting interrupt copying of other originals during multi-copying; and canceling the interruption after the copying is completed; A document holding means is provided at a position away from the copying position of the document and holds the one document mentioned above, and when there is an interruption during multi-copying, the above 1.
The present invention further comprises means for retaining two originals in the original holding means and feeding the one original to a copying position after the interruption, and a control means for copying the remaining number of sheets of the one original. Characteristic copying device.