JP2669294B2 - Copier - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying machine, and more particularly to a copying machine.
To a copier that can composite and copy original document images on one copy sheet
Related. 2. Description of the Related Art Conventionally, the consumption of copy paper is reduced.
Or reduce the volume of documents created by copying
Double-sided copying of two originals on the front and back of one copy paper
Various copying machines having a copying function are provided. like this
In a simple copier, two originals fit on one copy paper.
Therefore, the copy paper consumption is half that of single-sided copying.
And the volume of the copy is halved.
Has excellent advantages. [0003] By the way, the use of documents
If the image on the back side is inconvenient,
was there. For example, the image on the back side appears on the front side
Lei and so on. [0004] Accordingly, the present invention provides a method for printing one copy sheet on the same side.
It is possible to copy two original images and erase the copy paper.
Copies produced by copying while reducing costs
To provide a copier that can reduce the volume of
Target. In addition, the present invention provides two copy sheets on the same side of one copy sheet.
Selecting the optimum size copy paper when copying one original image
It is an object of the present invention to provide a copying machine that facilitates the process. [0005] To achieve the above object,
Therefore, the copying machine of the present invention can copy the copy paper from the selected paper feed unit.
Feed the document and arrange the two originals on the same side of one copy paper.
Set the automatic paper selection mode on the copying machine
Setting means and two sheets to be copied side by side on the same side of the copy paper
Of documents that detect the size of the first document
Size detection means, multiple paper feed units, automatic paper selection mode
In the first position detected by the document size detecting means.
Matching determined by the original size of the first sheet and the copy magnification
Select the paper feed unit that is loaded with double the size of copy paper.
And a paper selection means for selecting. In the copying machine of the present invention, the original size detecting means is used.
Depending on the document size detected by the step and the copy magnification
On a copy paper that is twice as large as the selected conforming size
Copy two originals side by side on the same side. [First Embodiment] First, a second synthesis method described later, which is particularly related to the present invention, is described.
The outline of the copying operation in the mode will be described with reference to FIG. Self
The moving original feeder 30 is used to feed the original with the side to be copied facing downward.
Documents O placed in order from the top of the documents placed on the tray 32
R2 and OR1 are fed by the feed roller to the pinch roller 38
Feed until before. First, the OR of the first (odd) original
2, that is, the second page of a two-page original
OR2 is a document table 39 by a pinch roller and a conveyance belt.
Conveyed toward. The rear end of the document OR2 is the sensor 37
If detected, the document is conveyed for a certain distance l1 and then stopped.
And is positioned at the position shown in FIG. Scan dew in this state
It is illuminated and copied, but the copy is twice as large as the copy image on the copy paper.
It is formed as shown in COPY1 in the figure, and half is white.
It is paper. This copy paper must be reused once inside the copier.
Stored in a paper feed tray. Thus, the required portion of the document OR2
When the number of copies is completed, the second (even-numbered) original O
R1, that is, the original of the first page in a two-page original
The draft OR1 is sent. The rear end of the document OR1 is the sensor 37.
If it is detected by
It is the total distance (l1 + l2) of the distance l1 and the width l2 of the document.
After being conveyed, it is stopped and positioned at the position shown in FIG.
You. In this state, scanning exposure is performed and copying is performed.
At this time, the copy paper on which the odd-numbered original OR2 was copied first
Shown as COPY2 in the figure to feed paper from the paper feed tray
Odd and even pages on one copy sheet
Will be copied. Specific examples of the present invention will be described below.
explain. FIG. 2 shows an automatic document feeder 30 of the present invention.
Synthetic copy mode copy mode suitable for placing and using
FIG. 3 is a cross-sectional view showing the main components of a copying machine including the above. In the figure
1 is a copying machine main body, 2 is a scanning optical system, and 3 is a photoconductor.
Drum, 4 is a developing device, 5 is a first paper feed stand, and 6 is a second paper feed.
Paper trays 7 and 8 are for copying on the first and second paper feed trays, respectively.
Paper feed rollers that feed paper one by one, 9, 10, 11 are multiple
Conveying rollers for conveying the copying paper to the transfer position, 12 for conveying
Path 13 is a transport for transporting the copy paper on which the toner image has been transferred
Belts, 14 and 15 are a pair of fixing rollers, and 69 is an eraser.
It's a service. Further, 16 is a conveyance path for the fixed copy paper,
17 ejects copy paper or re-feeds tray 20
A switching claw for switching whether to convey the paper, 18 for a re-feed tray
The transport path 19 is for copying both sides of the copy paper.
The orientation of the front and back sides of the paper can be changed between when performing composite copy.
It is a transport path switching claw for retrieving.
Transport to the paper feed tray 20 and reverse transport for double-sided copying
For switching to transport to the refeed tray via path 21
Things. 20 is a refeed tray, 22 is a refeed tray
Feed rollers for feeding the copy paper above, 23 and 24 are re-feed
Set the guide plate of the paper tray at the proper position according to the paper size.
Is determined. These guide plates 23 and 24 are keyed.
Stores the number of copy sheets corresponding to the specified number of copies.
And the paper feed roller 22 are retracted upward to feed the copy paper.
It has a function to move it under the roller so that it can be fed.
You. An automatic document feeder 30 is provided on the platen 25 of the copying machine 1.
Installed in The configuration will be described later. 50 is public
It is a sorter of knowledge. Next, the automatic document feeder 30 will be described with reference to FIG.
It will be described based on FIG. 31 is a document feeder, 32 is a document tray.
A, 33 is a feeding roller, and 34 and 35 are one document at a time.
Separation rollers for feeding separately, 36 ensure that originals are one by one
A separation sensor for detecting whether or not the sheet has been fed to
The trailing edge of the document to control the stop position of the document
An entrance sensor for detecting the time, and 39 for conveying a document
Between the driving roller 40 and the tension roller 41 with a belt
Will be erected. 42 presses the transport belt against the platen
It's Laura. 45 is a document discharge unit, 46 is a discharged document feed
Guides, 47 and 48 are guide rollers, and 49 is a discharge tray
Then, the original document which has been exposed is received. In addition, 4
Reference numeral 4 is a paper discharge sensor for detecting the trailing edge of the discharged document.
You. FIG. 4 is an operation panel of the automatic document feeder 30.
The print key 73 and the boundary between two documents
Boundary erase key 72 requesting erase, copy mode
Second mode when selecting the second composite mode as
Key 71, copy paper suitable for this is automatically determined from the original size.
APS mode to be selected for, according to the selected copy paper size
AMS mode in which the copy magnification is automatically selected, or
MUL mode to manually select copy magnification and copy paper
Select key 70 to select one of the
Lamps 65-1, 65-2, 65-3, 6 for displaying the mode
5-4 and 65-5 are provided. Copy mode
The composite mode includes the first composite mode and the second composite mode.
The first mode of synthesis is normal synthesis, that is,
Copy another original by superimposing it on the copy paper.
The second synthetic mode is related to the present invention.
A copy system linked to the automatic document feeder 30 in the copy mode
System, two originals fed continuously
In this mode, copying is performed on the same side of a copy sheet. Next, the operation will be described. First multiple
By operating the key 71 on the operation panel of the copying machine, the composite second mode
And then select key 70 to select the mode
Select either APS, AMS or MUL mode
Good. Further, the document tray 32 of the automatic document feeder 30 has
Place the original side down, starting from the last page at the top of the original
Prepare to be fed. Press the print key 73 on the operation panel to
When entering the copying operation, the original OR on the original tray 32 is the most
The upper document is sent out by the feeding roller 33, and is separated.
The sheets are separated one by one by the rollers 34 and 35, and the first sheet (odd
The original OR2 of several sheets is sent to the pinch roller 38.
It is. Transmission timing comes by known timing adjustment means
And the pinch roller 38 rotate, and the original OR2 is fed to the conveyance belt.
Send under 39. The transport belt 39 is a driving roller 40
Is moving in the direction of arrow a due to
It is held by force and conveyed in the direction of arrow a. The motor shaft for driving the pinch roller 38 has
A pulse generation disk (not shown) is attached to the original
A predetermined time has passed since the rear end was detected by the entrance sensor 37.
After the document trails over the reference point P,
Ra 38 and the conveyor belt 39 are stopped, and further the conveyor belt
A predetermined amount determined from the time counted by the previous timer and the amount of movement
Move in the opposite direction (the direction of arrow b), and
A reference point P on the table 25 (in FIG.
Stop at the separation 11 position). The original is placed on the original table 25 at a predetermined first position (see FIG.
In the case of No. 1, since it was positioned at position A), automatic document feeding
A series of exposure, development, and fixing from the stand 30 to the main body of the copying machine.
A copying operation is commanded. The scanning optical system 2 scans the original,
An electrostatic latent image is formed on the photosensitive drum 3. The electrostatic latent image is
Imaged and fed from the paper feed table 5 or 6 to the transport rollers 9, 10, 1
Is transferred onto a copy sheet fed through one transport path 12
You. The copy paper on which the toner image is transferred is conveyed by the conveyor belt 13.
The toner image is conveyed to the fixing rollers 14 and 15 and the toner image is copied onto the copy paper.
Is established. The above is the copying process of a normal copying machine.
Although the explanation is omitted, the copying machine has a charger, a transfer device,
Make sure that there is a configuration equipped with a known copying machine such as a static eliminator and cleaner.
And of course. The copy sheet on which the fixing has been completed is fixed on the fixing roller 14,
Although it is ejected from 15, the composite second mode is set as the copy mode.
Is selected in the middle of the transport path
The switching claw 17 that is present moves the conveying path 16 toward the refeed tray 20.
Switching. Therefore, the copy paper enters the transport path 18.
At the exit of the transport path 18, a paper surface is printed in the double-sided copy mode.
To the reversing conveyance path 21 for reversing the surface, or composite
Directly to the refeed tray 20 in the first or second mode
There is a switching claw 19 to carry in. In the case of this explanation, a copy mode is used.
Since the second composite mode is selected as the
19 is cut in a direction in which the copy paper directly enters the refeed tray 20.
Has been replaced. The copy sheets carried in are guided by the guide plates 23, 2.
4 and stored in a predetermined position on the re-feed tray 20.
You. Thus, the copy operation for the set number of times is repeated.
Then, the copying of the first (odd number) document is completed. Next, the feeding roller 2 on the refeed tray 20.
2 is retracted upwards, and copy paper on the refeed tray 20 is
The plates 23 and 24 are moved to the left in FIG.
Set to paper position. Then, the feeding roller 22 descends
The margin of the copy paper where the first document was copied earlier
The second document is fed as a copy sheet for copying
Ready to complete. The first sheet (odd number sheet) output from the copying machine side
3) The automatic document feeder 30 receives the copy end signal of
Then, the automatic document feeder 30 starts a document exchange operation.
First, the conveyor belt 39 moves in the direction of arrow a in FIG.
The original (odd number) is fed to the original feeding guide 46 and the guide.
The sheet is conveyed between the rollers 47 and 48 and is
Is discharged. At this time, the discharge sensor 44 detects the discharge.
It is. When the discharge sensor 44 detects discharge, the next
Document is sent out by the feeding roller 33. This time
Since it is the second (even-numbered) document, the trailing edge of the document
The timer that starts counting after the sensor 37 detects the original
The rear end of the rear end is a reference point P on the platen (in FIG.
Corresponding to the width l2 of the original more than the position of the distance l1)
The distance to the left in Fig. 3 and count the original
Stop the draft. The manuscript is the designated second place on the manuscript table 25.
(The position B in FIG. 1)
Exposure, development, and fixing of the copying machine body from the feeding device 30
A series of copying operations is commanded. Scanning optical system 2 scans original
To form an electrostatic latent image on the photosensitive drum. This place
If the optical system 2 is a full scan that scans the entire surface of the platen,
This corresponds to the first position of the original on the photosensitive drum.
The portion of the conveyor belt 39 of the automatic document feeder 30 is
Since dirt on the surface is also formed as an electrostatic latent image,
To remove this, turn on the eraser lamp in this part
Delete it. At this time, the first (odd number) original and
A line image is formed on the boundary of the second (even-numbered) document.
Therefore, widen the erase width with the eraser lamp.
It is good to keep. The electrostatic latent image on the photosensitive drum is not developed.
The toner image is re-fed by the feeding roller 22.
Copy paper on paper tray 2, that is, the first original
The image is transferred to the blank area on the paper that has been cut. The copy paper on which the toner image is transferred is a conveyor belt.
The toner image is conveyed to the fixing rollers 14 and 15 by the toner image 13.
Is fixed on the copy paper. The fixed copy paper is ejected
However, since it is processing the second (even-numbered) document,
The replacement claw 17 moves the conveying path 16 in the discharging direction toward the sorter 50.
Switching. Therefore, copy paper is ejected from the copier body.
Taken out, entered the sorter and sorted by known means. Or
The copy operation is repeated for the specified number of copies.
Then, the copying of the second (even-numbered) document is completed. The third and subsequent sheets are also referred to as the first sheet (odd number sheets).
Second), the same movement as the copying operation for the second (even-numbered) original
The operation is repeated until all originals have been copied,
The copying work is completed. The determination of the odd-numbered and even-numbered sheets of the original is
A signal indicating the passage of the document edge detected by the entrance sensor 37
For controlling the automatic document feeder 30
(Hereinafter, referred to as ADF control CPU.) 60
Data, and judge by the counting result. FIG. 5 shows the automatic document feeder 30 and the main body of the copying machine.
2 is a block diagram of a control circuit for controlling the
Only the parts related to the mode are shown. Automatic document feeder
30 and copier main body equipped with control microprocessor
Well, the program executed by each microprocessor
The function of the automatic document feeder 30 and the copier body is controlled by the ram.
The operation is controlled. First, a description will be given from the automatic document feeder (ADF) side.
To be clear, 60 is an ADF control CPU and its input
Print key 72 for port I1, APS / A for I2
MS / MUL mode selection key 70, I3
The mode selection keys 71 and I4 have the border erase key 72
These signals are input. For input ports I5 and I6
The entrance sensor 37 for detecting the document feeding state and the discharge sensor
The signals SEN • IN and SEN • OUT of the sensor 44 are input.
It is. Also, from the output ports O1, O2, O3,
The high-speed drive signal H to the high-speed drive motor control circuit 62.
I, a low-speed drive signal LO, and a forward / reverse switching signal are output.
63 is a conveyor belt drive motor
The control circuit 62 controls the speed and rotation direction,
Control pulse from pulse generator installed on motor shaft
Input port I of ADF control CPU 60 via circuit 62
Input to P. Also, the output port of the ADF control CPU 60
From O4 to the drive circuit 64 to the pinch roller
ON / OFF signal and brake for clutch that transmits power
Activation signal, and APS / AMS / MU keyed in
Signals for L mode display and composite second mode display
Output, clutch, brake operation, display 65
The indicator lamp is displayed. On the other hand, the input port of the copy body control CPU 61
Document sizes and document orientations for Ia, Ib, Ic, and Id
(Hereafter, the long side of the paper is set in the paper transport direction.
The orientation is vertical, with the short side set in the paper transport direction
Is called horizontal. ) Detects whether A4 landscape or B5 landscape etc.
Detection signal SEN / OR, paper feed tray of copier, paper feed cassette
Paper size signal SEN / PA stored in the unit, scanning
Scanning detection signal SEN / SC of optical system 2 and
Input the detection signal SEN / DM of the rotation angle position of the optical drum
Is done. In addition, the scanning optical system from the output ports Oa and Ob
The scanning optical system drive signal, positive
The reverse rotation switching signal is output. 67 is a scanning optical system drive mode
Rotation stop and forward / reverse control are not controlled by the control circuit above.
The pulse generator installed on the motor shaft
Controlling the pulse to the main body of the copying machine CPU6
1 input port IS. Also, control the main body of the copier
From the output port Oc of the CPU 61 to the drive circuit 68
On the other hand, a lighting control signal for the erase lamp 69 is output. ADF control CPU 60 and copy body control CP
Various control signals are exchanged with U61, and AD61
Output ports O5, O6, O7, O8 of the F control CPU 60
From the original size signal ORSZ, copy start signal CPS
T, an even page signal indicating that the document is an even page
EVPG, COM2 signal indicating the second synthesis mode is output.
Input ports Ie, If,
Input to Ig and Ih. Also, the copy body control CPU 6
Copy paper size signal PA from the output ports Od and Oe of No. 1
SZ, copy end signal CPFN are output, ADF control
It is input to the input ports I7 and I8 of the CPU 60. Next, the ADF control CPU 60, copy book system
The control process executed by the control CPU 61 is shown in FIG.
This will be described with reference to flowcharts up to 12. FIG. 6 is executed by the ADF control CPU 60.
Flow chart showing the outline of the main routine of the executed program
It is. Memory clear and flag when power is turned on
Initialization such as resetting is performed (step S1). One
Set an internal timer to manage the operation of the main routine
(Step S2). Signals input from various sensors
And processing of output signals such as drive motor operation commands (
Step S3). Check whether or not the automatic document feeder 30 is used
(Step S4) If the Automatic Document Feeder 30 is Used
The mode entered as the copy mode, for example, normal mode
Required flags, etc. according to input signals such as mode and synthesis mode
The mode is set to set (step S5).
Start feeding the document, and the document is fed to the pinch roller.
Stop (step S6). Check whether the copy mode is the composite second mode or not.
(Step S7) If not in the composite second mode,
The process proceeds to step S11, and as described in detail later, the transport mode 1
Brutin is executed, and the process proceeds to step S12. In addition,
If the document is in the second mode, the process proceeds to step S8, and
Whether or not the flag indicating that it is a page is set
Find out. A flag indicating that the original is an even page
Is set, the transport mode 2 subroutine
(Step S9) is executed, and the process proceeds to Step S12. Ma
Also, when the above flags are not set, i.e.
When the manuscript is an odd page, the transport mode 1 subroutine
Step S10) is executed, and the process proceeds to step S12. Key input or feeding of document size detection
The detected original is detected by the sensor (step S1).
2) Wait for the internal timer to expire (step S13),
The process returns to step S2 to move to the process of the next cycle. In step S4, the automatic document feeder 30 is used.
The original is not placed on the platen 25 when not in use.
Forgotten manuscript such as a display indicating that
14) Go to step S13. Next, step S in the flow chart of FIG.
Transport mode 1, transport shown as 10, S11 and S9
The mode 2 subroutine will be described. First, referring to the flow charts of FIGS.
The transfer mode 1 subroutine will be described. Transported
A feed counter (not shown) determines whether the original is
Check (Step S21) If it is not the first sheet, step
Move to S30. If it is the first sheet, the entrance sensor 37 is the document
It is checked whether or not an edge has been detected (step S22).
When the original has been fed to the pinch roller entrance,
It is determined whether or not (step S23). Document feeding is complete
When completed, the process proceeds to step S24. Step S22,
When the determination result is negative in S23, the process returns to the main routine.
You. In step S24, the document tray is set.
Check if the total number of originals to be copied is an odd number
You. This is because when the total number of originals is an odd number,
When copying a document, only one original is copied last
Therefore, the left side of the copy paper is blank (see COPY in Fig. 1).
1) and looks good
In this case, the original to be copied first,
Copy the manuscript of the later page on the left side of the copy paper,
To make a blank area on the right side of the copy paper
It is a judgment. The total number of originals set in the original tray
It is not shown whether the number of pages is odd or even.
Input from a key, such as a key switch on the operation panel
Can also be entered from a separate document counting means.
You can help. As a result of the determination in step S24, the total number of originals
If the number is odd, turn on the pinch roller clutch.
Then, the transport belt 39 is driven at a low speed to place the original on the platen 25.
Conveyed to position B (see FIG. 1), and an even number for the next original
Set the page flag (steps S25, S26,
S27). As a result, the subsequent processing is performed in the transport mode 2 support.
Treated with Brutin. In addition, the format of step S24
If the odd number is not the result, the pinch roller clutch
Is turned on, the conveyor belt is driven at high speed, and the original is placed on the original table 2
5 (see FIG. 1) (Step S2)
8, S29). In step S30, the document table 25 is positioned.
Adjusts the end of the desired number of copies for the determined original.
Bell. If copying is completed, the conveyor belt 39 is driven at high speed
To transport the original to the discharge unit 45, and supply the next original.
Set timer TM3 to adjust the sending timing
(Steps S31 and S32). When copying is not complete
Is omitted from steps S31 and S32, and proceeds to step S33.
move on. In step S33, the timer TM3 finishes counting time.
Check, if not, move to step S41
However, if it is finished, the process proceeds to step S34, and the document
It is checked whether all the originals of the ray 32 have been fed. Already delivered
If there is, the process proceeds to step S35, and the discharge sensor of the document discharge unit
44 to detect whether the trailing edge of the document has been detected.
When the original is completely stored in the output tray 49
Set the timing adjustment timer TM6 (step
S36), and checks whether the timer TM6 has timed (step S
37), the conveyor belt 39 is stopped when the timing is finished
Then, the process returns to the main routine (step S38). Step S
At 35, the discharge sensor 44 of the document discharge section detects the trailing edge of the document.
If not, skip step S36
If the timer TM6 has not timed out in S37, the
Step S38 is omitted. In step S34, if all the originals have been fed
If there is no pinch roller, the process proceeds to step S40.
Switch is turned on to convey the document. After original being transported
Check whether the end is detected by the entrance sensor 37 (step
S41), the transport belt 39 detects the original when it is detected.
For adjusting the timing of transporting to the predetermined position on the platen 25
The timer TM7 is set (Step S42). Manuscript
If not detected, step S42 is omitted. Stay
Proceeding to step S43, it is checked whether the timer TM7 has finished measuring time.
If the timing has not ended, the process proceeds to step S50.
When the time is over, the conveyor belt 39 is stopped and the pinch roller
Document feed drive with clutch OFF and brake ON
Stop the part (steps S44 to S46) and
The original that feeds the next original from 32 to the pinch roller 38
The draft feeding flag is set (step S47). Furthermore,
Originals that are slightly out of the normal position and are stopped
Conveyor belt 3 up to the setting (position where the trailing edge of the document matches point P)
Timing adjustment timer TM8 for moving 9 in the opposite direction
And set the copy start flag (step
S48, S49). Check whether the timer TM8 has finished counting (step
S50), when the timing is finished, the conveyor belt 39 is blocked.
The rake is turned off, the conveyor belt 39 is driven in reverse,
When the pee start flag is reset and the conveyor belt is driven in reverse
Set the time counting timer TM9 (steps S51 to S51).
54). For the reverse rotation drive time, the original is moved by the pinch roller 38 first.
Pulses on the pinch roller drive shaft when fed
The original position of the original is exceeded based on the number of rotations counted by the generator.
Since the length sent by default is known, correct this length
Set the time so that the conveyor belt 39 is
Set. The timer TM9 is checked to see if it has finished counting, and
End, that is, when the original is set to the proper position, the conveyor belt
39 reverse rotation is stopped and an odd page flag is set for the next manuscript.
Reset, set the even page flag (step
(S57, S58, S59) and returns to the main routine. In step S50, the timer TM8 counts
If the time has not ended, skip steps S51 to S54.
The process proceeds to step S56, and then to step S56.
If the timer TM9 has not finished counting,
Steps S57 to S59 are omitted, and the process immediately returns to the main routine. Next, according to the flowchart of FIG.
The C2 subroutine will be described. First, the end of the copy
Is checked (step S61).
The document is conveyed to the discharge unit 45 by driving the feeding belt 39 at a low speed.
To adjust the timing for feeding the next original.
Ima TM3 is set (steps S62 and S63). Here, the point at which the conveyor belt is driven at a low speed is described.
Will be explained. The first document stops at the position A in FIG.
Therefore, the document is positioned at the reference point P.
Is the end of the platen (original glass), which is
High-speed drive because the reference position can be set
I do. On the other hand, when stopping the original at the position B,
The stop position varies depending on the size, and the positioning member is installed.
Since it is difficult to pull the document
Drive at low speed to improve the accuracy of the position. In the embodiment
1000 mm / sec for high-speed drive, 200 m for low-speed drive
m / sec. In step S61, the copy is not completed.
If not, steps S62 and S63 are omitted. Steps
Proceed to S64, check whether the timer TM3 has timed, and end
If it is, the process proceeds to step S65,
Check if all have been sent. Document output if fed
Whether or not the discharge sensor 44 of the section has detected the trailing edge of the document.
Check (step S66). When the trailing edge of the document is detected
The time until the original is completely stored in the output tray 49
The timer TM6 for adjusting the timing is set (step S6).
7) Check whether the timer has finished counting (step S68).
When it is finished, stop the conveyor belt 39 and
Reset the odd page flag and set the odd page flag
Return to the main routine (steps S69, S70, S7
1). In step S66, the discharge sensor 44 of the document discharge unit
If the trailing edge of the document has not been detected, step S67 is omitted.
Then, in step S68, the timer TM6 finishes timing.
If not, step S69 is omitted. In step S65, all the originals have been fed.
If there is no pinch roller, the process proceeds to step S72.
Switch on to feed the document. After the document being fed
Check whether the end is detected by the entrance sensor 37 (step
S73), when detected, the transport belt 39
Tie for adjusting timing for transporting to a predetermined position on the platen
The value TM4 is set (step S74). This timer
TM4 differs depending on the size of the document. Original is detected
If not, step S74 is omitted. Proceeding to step S75, the timer TM4 is counted.
Examine the end of time. If the time has not ended, step S
82, but when the timing is finished, the conveyance belt 39 is stopped.
Stop, pinch roller clutch OFF, brake ON
To stop the original transport driving portion (steps S76 to S76).
78), and for timing adjustment to turn off the brake
Timer TM5 set, copy start flag set, original
The paper feed flag is set (steps S79 to S8)
1). The end of the timer TM5 is checked (step
S82) When finished, release the brake and start copying.
Flag reset, even page flag reset, odd page
The main flag is set (steps S83 to S86).
Return to the routine. In step S82, the timer T
Immediately return to the main routine when M5 timing is not finished
You. FIG. 9 is executed by the copy body control CPU 62.
In the flowchart which shows the outline of the main routine of the program
is there. Clears memory and resets flags when power is turned on.
Initialization is performed (step S101). About
Sets an internal timer that manages the operation of the main routine
(Step S102). Paper cassette and other various sensors
Output signals such as signals input from the
Processing of a force signal is performed (step S103). next
The copy mode is set (step S104). Duplicate
Details of the setting of the shooting mode will be described later in detail. Next, run
The inspection optical system 2 is moved to set a predetermined copy magnification (step
S105), re-feed according to the selected copy paper size
Set the guide plates 23 and 24 of the tray 20 (step
S106). Check whether the copy mode is the composite second mode
(Step S107) In the case of the second synthesis mode, the synthesis
A preparation operation is performed (step S108). This is the refeed tray
B. Setting of transport path switching claw 17 on tray 20 and tray guide plate
23 and 24 are set. Synthetic second
If the mode is not the mode, step S108 is omitted. Copy output from automatic document feeder 30
-Check whether the start signal CPST is ON (step S1).
09), if ON, a series of copying operations is started. That is,
Paper feeding, photoconductor charging, development, transfer, static elimination
Copying process of documents, scanning of originals by scanning optical system
Of the electrostatic latent image on the photoconductor due to the exposure and composite second mode
Margin area, border erase, transport in combination 2nd mode
Switching the path, feeding from the refeed tray, ejecting copy paper, etc.
The operation is controlled (steps S110 to S11).
6). Wait until the internal timer finishes counting (step
S117), Step S102 to move to the next cycle
Return to In step S109, the copy start signal is
If it is not N, the copying operation is not started and the process proceeds to step S117.
You. Next, in the flow chart of FIG.
Out of the copy modes set in step S104,
When the second composition mode is set from key 71,
10a and 10b.
Description of other cases is omitted. Note that here
The manuscript explains the thing of A4 size, but this is
This is an example, and the present invention is not limited to this. First, it is checked whether or not it is the second synthesis mode (step
Step S121), if not the synthesis second mode, another mode
After executing the processing for setting, it returns to the main routine.
In the second mode, check whether the original is an odd page (scan
(Step S122) If the page is not an odd page, step S
Moving to 132, the scanning optical system scans the original with a width of the original table.
Set to A3 size corresponding to the whole surface, erase mode
Set 2 (step S133) and return to the main routine
You. The erase mode will be described later in detail. As a result of the determination in step S122, the odd page
If the size of the original is A4, the process proceeds to step S123.
Check whether it is horizontal. This is automatic document feeding (not shown)
Check with the sensor of the device 30. Others when not A4 horizontal
Size, for example, to determine whether B5 is placed horizontally,
In the following, if possible, the dimensions of the second mode will be explained.
The flow chart is similar to the flow chart
The explanation is omitted because only the size of the copy paper used is different.
Abbreviate. If the size of the original is A4 landscape, step
Proceeding to S124, it is checked whether the mode is the APS mode. APS
The mode automatically selects the appropriate copy paper based on the document size.
Input from the key 70 on the operation panel
And set it. When in APS mode,
Check the copy magnification that is keyed in separately, and copy when the magnification is equal.
When A3 portrait is selected as the paper and the copy magnification is 0.816
Selects B4 portrait as the paper and the copy magnification is 0.707.
In this case, A4 portrait is selected as the paper (steps S125 to S125).
S129). Next, the selected paper is
Check that there is no paper in
Then, the process returns to the main routine (steps S130 and 131). Thus, in the second synthesis mode,
Select a size that is twice as large as the conformable size selected in normal APS.
Enables composite copy of two originals by selecting
You. If it is not the APS mode in step S124,
If so, the process proceeds to step S141 (FIG. 10b), and the AMS mode
Check to see if it is What is AMS mode? Operation panel keys
This is the mode selected and entered from
Model that automatically selects the copy magnification according to the copy paper size
Mode. Key input copy in AMS mode
The copy magnification is selected according to the paper size, but the original is A4 landscape.
Copy magnification when paper size is A3 portrait
1.00, if the paper size is A4 portrait, the copy magnification is 0.70
7. If the paper size is B4 portrait, select a copy magnification of 0.816.
(Steps S142 to S146). Set times
It is checked whether the rate range can be set (step S147),
If the setting cannot be made, a warning is processed and the process returns to the main routine.
Step S148) If it can be set, Step S154
And set the width for scanning the original by the optical system to A4 width.
And erase mode 1 is set (step S1).
55) and returns to the main routine. Thus, in the second composite mode,
One-half the normal magnification selected for AMS
Select the rate, that is, the magnification equivalent to half of the copy paper, and
Enables composite copying of one original. If it is not AMS in the judgment of step S141,
If so, the process proceeds to step S151. This is a manual mode
Is used to select the paper size and copy magnification.
In the description of the embodiment, A4 portrait is selected as the paper size,
The rate 0.707 is selected (steps S151 and S15).
2). Paper of A4 size is placed on the paper tray or paper cassette.
(Step S153), and if there is, step
Move to S154. Also, if there is no paper,
The process returns to the main routine (step S156). The paper selected in step S130 is
If there is, the process proceeds to step S154. 10a, b
In the flowchart, steps S155 and S133
About erase mode 1 and erase mode 2
A description will be given based on the flowcharts of FIGS. 11a and 11b.
FIG. 11a is a flowchart showing the erase mode 1.
First, when copying in the composite mode, a line is drawn between the two originals.
May appear, but the request to erase this
Check whether the key 72 has been entered (step
S161). Immediately returns to the original routine if no request is made
However, if there is a request, check the set copy magnification and copy
A predetermined value is set for the timer T1 that determines the erase width according to the magnification.
Set a flag requesting that the time be set. Immediately
That is, when the copy magnification is 1.00, the flag A is set,
When the copy magnification is 0.816, the flag B is set.
If the magnification is 0.707, the flag C is set (step
Steps S162 to S166) and the original routine is returned to. FIG. 11B shows erase mode 2.
Although it is a flow chart, copying in this erase mode
Since the original to be printed is in the second position (position B in FIG. 1),
Dirt on the original platen in the first half of the area is electrostatically charged on the photosensitive drum.
Appears as a latent image, which is
The first half,
That is, it is necessary to erase only the A4 size width of the paper. So
Is input from the operation key 72
If not, a request flag to erase in A4 size width
Is set (step S177). Other parts, immediately
Check the copy magnification and set the timer according to the copy magnification to the specified time.
The part that sets the flag that requires the
S172 to S176) are the same as those in the erase mode 1.
You. Next, in the flowchart of FIG. 9, step S1
Of the erase controls shown as 13, the erase control described above is performed.
The parts related to the race mode are shown in Figs. 12a and 12b.
-I will explain with a chart. First, the electrostatic latent image formed on the photosensitive drum
A photoreceptor drum is used to determine whether the tip of the image is under the eraser.
From the rotation angle signals SEN, DM, etc. (step S1
81), if not under the eraser, step S190
If it is under the eraser, go to step S182.
Then, check the erase request flag for A4 width (step
S182). If the erase request flag is set
For example, the erase lamp 69 is turned on (step S18).
3). If the erase request flag is not set
Proceed to step S184 to check the timer request flag
(Step S184). Timer request flag is set
If not, the process immediately proceeds to step S190.
When the request flag is set, whether the flag is A or B
Or C, and set the corresponding time in timer T1.
And starts timing (steps S185 to S18
9). That is, the following times are set. (1) When flag A is T1 = (TA-A) (2) When flag B is T1 = (TB-B) (3) When flag C is T1 = (TC-C) where TA: A4 Time required to scan the dimensions at the same magnification × TB: A4 Required to scan the dimensions at the × 0.816 magnification
Time TC: required to scan A4 dimensions at a copy magnification of 0.707
Time A, B, C: constant. A value determined according to each copy magnification,
It represents the time corresponding to 1/2 of the erase width of the eye. At step S190, the timer T1 is counted.
Check the end of time, and if the timer has finished counting, this is the boundary
It means it's time to start erasing
The erase lamp 69 is turned on (step S191).
If the timing has not ended, this step is omitted. In step S192, the photosensitive drum
That the trailing edge of the electrostatic latent image formed on the surface has come under the eraser
Whether or not it is checked is determined from the rotation angle signal of the photosensitive drum. Ile
If not, the process proceeds to step S203.
If you are under the racer, clear the erase request flag with A4 width
Check (step S193). If the erase request flag is
If not, go to step S202 to erase
The slump 69 is turned on. Thailand when set
Check whether the request flag is set
If not, the process proceeds to step S201, and the erase
The lamp 69 is turned off. Also, the timer request flag is set
If the flag is set, check whether the flag is A, B, or C.
Set the time corresponding to each in timer T2 and open the clock.
The process starts (steps S195 to S199). That is, the following
Set the time. This time corresponds to time A, B, C
The length of the erase is extended by a certain length. (1) T2 = A for flag A (2) T2 = B for flag B (3) T2 = C for flag C where A, B and C are the same constants as described above. is there. Proceed to step S200 to erase the A4 width.
The request flag is reset, and the process proceeds to step S203. At step S203, the timer T2 finishes timing.
Check that the erase lamp has been turned off
(Step S204). If the clock has not finished,
Step S204 is omitted and the process proceeds. Furthermore, when scanning the original
Investigate and turn off the erase lamp even when the
The process returns to the routine (steps S205 and S206). scanning
Is not completed, step S206 is omitted, and the
Return to routine. As is apparent from the above description, the present invention
Of the detected original size and copy magnification
A copy of the size twice the conforming size determined by
Two originals are arranged and copied on the same side of paper. Therefore,
The optimum copy paper can be easily selected to improve the efficiency of copy work.
To It also reduces the consumption of copy paper and makes it easier to copy.
Therefore, the volume of a copy to be created can be reduced.
In addition, the original size used to select the paper
The first of two originals copied side by side on the same side of paper
Because the size of the second original was set,
It is possible to select the paper feed section without waiting
The shooting speed is improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram of an operation of an automatic document feeder according to the present invention. FIG. 2 is a sectional view showing a main configuration of a copying machine suitable for installing and using the automatic document feeder of the present invention. FIG. 3 is a sectional view showing a main configuration of an automatic document feeder. FIG. 4 is a front view of an operation panel of the automatic document feeder. FIG. 5 is a block diagram of a control circuit that controls the automatic document feeder and the main body of the copying machine. FIG. 6 is a flowchart of a control process executed by a CPU for controlling operations of the automatic document feeder and the copying machine main body. FIG. 7 is a flowchart of a control process executed by a CPU that controls operations of the automatic document feeder and the copying machine main body. FIG. 8 is a flowchart of a control process executed by a CPU that controls operations of the automatic document feeder and the copying machine main body. FIG. 9 is a flowchart of a control process executed by a CPU for controlling operations of the automatic document feeder and the copying machine main body. FIG. 10 is a flowchart of a control process executed by a CPU for controlling operations of the automatic document feeder and the copying machine main body. FIG. 11 is a flowchart of a control process executed by a CPU for controlling operations of the automatic document feeder and the copying machine main body. FIG. 12 is a flowchart of a control process executed by a CPU that controls operations of the automatic document feeder and the copying machine main body. [Description of Signs] 25: Document table 30: Automatic document feeder 32: Document tray 37: Inlet sensor 38: Pinch roller 39: Conveyor belt OR1, OR2: Document COPY1, COPY2: Copy

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical indication location G03G 15/00 510 G03G 15/00 510 21/00 378 21/00 378 (56) References JP JP-A-63-74844 (JP, A) JP-A-60-98460 (JP, A) JP-A-61-62088 (JP, A) JP-A-61-196263 (JP, A) JP-A-60-235169 (JP, A) JP-A-59-109072 (JP, A) JP-A-60-2942 (JP, A) JP-A-60-93462 (JP, A) JP-A-62-121149 (JP, A) 61-42647 (JP, A) JP-A-63-21668 (JP, A) JP-A-7-13464 (JP, A) JP-A-60-84945 (JP, U)

Claims (1)

(57) [Claims] Setting means for setting an automatic paper selection mode in a copying machine which feeds copying paper from a selected paper feeding unit and copies two originals side by side on the same side of one copying paper; Document size detection means for detecting the size of the first document of two documents which are copied side by side on the same side, a plurality of paper feeding units, and detection by the document size detection means in the automatic paper selection mode And a paper selecting means for selecting a paper feed unit loaded with a copy paper of a size twice as large as the adaptable size determined by the first original size and the copy magnification. Machine.