JPH03114070A - Copying device - Google Patents

Abstract

PURPOSE:To form a finding margin in the most suitable position by providing a means which automatically determines a finding margin forming position according to a mode. CONSTITUTION:This device is provided with a two-in-one mode input means, a single-sided/double-sided mode input means, an allowance mode input means, a mode control means and an allowance control means; the control means forms non-image areas for finding margins on both sides of copying paper when the margin mode is established together with the two-in-one mode and a single-sided mode, and forms the non-image areas for the margin in the center of the copying paper when the margin mode is established together with the two-in-one mode and the double-sided mode. In this case, when the margin formation is instructed by the margin mode input means, the margin forming position is automatically determined in consideration for the other modes. Thereby, users can form the finding margin in the most suitable position without being confused.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a copying apparatus equipped with an automatic document feeder (ADF) and double-sided copying means.

[Conventional technology]

(1) Equipped with an ADF that has the function of feeding a document onto the document table of the main unit, setting it in a predetermined position, and removing it from the document table after image scanning is completed, and can operate in 2-in-1 mode using the ADF. Copy machines are provided.

The 2-in-1 mode using the ADF means that two originals are fed and set side by side on the original table, and a copy image of the two originals is formed on one sheet of copy paper by -degree image scanning. mode.

(2) A copying machine equipped with a double-sided copying means, for example, a copy paper refeeding device, is provided.

The paper refeeding device temporarily stores the copy paper on which the image has been formed on the first side (front side) in a paper refeeding tray, and then stores the copy paper on which the image has been formed on the first side (front side).
This is a device that refeeds paper to the image forming unit so that the back side (back side) becomes the image-forming surface, and forms copied images on both sides of the same copy paper.

(3) A copying machine capable of operating in a binding mode is provided.

The binding margin mode is a mode in which a non-image area for binding margin is formed on copy paper, and the binding margin formation positions (left end, right end, both ends, center) are conventionally specified by a predetermined input means.

[Problem that the invention seeks to solve]

The position on the copy paper at which the non-image area for binding should be formed must be determined in relation to other modes.

For example, when the 2-in-1 mode and the single-sided mode are set, a copy image is formed on each of the left and right halves of the first side of the copy paper (see FIG. 15(E)). Therefore, in this case, it is preferable to form binding margins at both ends of the copy paper in consideration of so-called "back binding". "Bag binding" is a method in which sheets of paper are folded in the center with the image forming side facing up, and both ends are stapled together.

Further, when the 2-in-1 mode and the duplex mode are set, copy images for a total of four pages are formed on each of the left and right pages of the first and second sides of the copy paper. Therefore, in this case, it is better to form a binding margin in the center of the copy paper in consideration of "spine binding" (see Figure 15 (F)).
. "Spine stitching" is a method of stitching together the center portions of sheets so that the entire image forming surface for four pages can be opened.

As described above, there are many circumstances that need to be taken into consideration when determining the binding margin forming position. Therefore, when a user attempts to determine the binding margin position when making a copy, confusion tends to occur.

The present invention has been made in view of such circumstances.

[Means and operations for solving the problems] The present invention is a copying apparatus that automatically determines the binding margin forming position according to the mode. That is, 2-in-1 mode input means for commanding 2-in-1 mode, single-sided/double-sided mode input means for commanding single-sided mode or double-sided mode, binding margin mode input means for commanding binding margin mode, command. When the binding margin mode is set together with the 2-in-1 mode and the simplex mode, the binding margin mode is configured to form non-image areas for binding at both ends of the copy paper, and the binding margin mode is set to the 2-in-1 mode. and a binding margin control means for forming a non-image area for binding margin in the center of the copy sheet when set together with the duplex mode.

According to this configuration, when the binding margin mode is set together with the 2-in-1 mode and the single-sided mode, both ends (
A binding margin (corresponding to the leading edge of the image of the first original and the trailing edge of the image of the second original) is formed.

Further, when the binding margin mode is set together with the 2-in-1 mode and the duplex mode, the binding margin is formed at the center (corresponding to the trailing edge of the image of the first document and the leading edge of the image of the second document).

The binding margin can be formed by a conventionally used method.

For example, a method of forming a non-image area by removing static electricity from the area corresponding to the binding margin on the photoreceptor drum before development to prevent the adhesion of toner, or a method of forming a non-image area by reducing the size of the area corresponding to the binding area on the copy paper using reduced copying. A method of forming a non-image area, etc. can be adopted. In the latter case, the binding margin position can be adjusted by adjusting the timing at which toner image transfer onto the copy paper starts.

〔Example〕

Examples of the present invention will be described below. l Copying device mechanism 2 Signals etc. output by people 3) Position and method of binding margin formation 4 Operation of copying device 5 Second example I will explain in this order.

(1) Mechanism of copying device FIG. 1 shows a schematic structure of a copying device (main unit and automatic document feeder: ADF) according to an embodiment.
Optical system lot in the upper part, image forming unit 102 in the middle part, paper refeeding unit 103 in the lower part, and paper feeding unit in the bottom part) 104
are arranged respectively, and furthermore, an ADF 400 is set on the document table glass 16.

1> Optical system 101 The optical system 101 scans a document set on the document table glass 16 while irradiating it with the exposure lamp 10, and transmits the reflected light image from the document image to the reflecting mirrors 11a, llb, IIC,
The light is guided to the photosensitive drum 2 of the image forming section 102 via the lens 12 and the reflecting mirror 11d, and an image is formed on the surface thereof.

The moving speed of the exposure lamp 10 and the reflecting mirror 11a during scanning is V/N (V: peripheral speed of the photoreceptor drum 2).

N: copying magnification), and the reflecting mirrors zb and tic are V/2
It is N. Further, the moving direction is the direction indicated by the arrow. In addition,
By adjusting the position of the lens 12, the copying magnification can be set.
The imaging position is corrected by adjusting the angle of the reflecting mirror lid.

Further, the switch SW501 and the switch 5W500 are sensors that detect the normal position of the scanner and the leading edge position of the image, respectively.

<2> Image Creation 1i'1s102 The image creation unit 102 executes image creation using an electrophotographic process. That is, the electrostatic latent image formed on the photosensitive drum 2 is developed with toner, transferred onto copy paper, and fixed.
Discharge. The image forming section 102 is configured around a photosensitive drum 2 that is rotatably supported in a counterclockwise direction in the figure.

Around the photosensitive drum 2, an erase lamp 7 for static elimination, a charger 6, and an image-to-image eraser 7a for static elimination are arranged in order.
A developing device 3 for developing one toner, a transfer charger 5a, a separation charger 5b, and a cleaner 4 are provided. Note that 46 is a container that stores the residual toner removed by the cleaner 4.

As will be described later, in the first embodiment, by controlling the timing of the ON/OFF time of the inter-image eraser 7a,
The binding margin is formed. Furthermore, in the second embodiment device,
The binding margin is formed by setting the reduction magnification.

On the right side of the separation charger 5b in the figure, there are a conveyance belt 8 that conveys the transferred paper, a fixing device 9 that fixes the toner image on the paper, a pair of paper conveyance rollers 14, a conveyance path switching lever 41, and a paper discharge. A roller pair 15 is arranged.

The conveyance path switching lever 41 switches between discharging the imaged paper onto the paper discharging tray 36 outside the machine or discharging it to the paper re-feeding tray 58, and is operated by a solenoid (not shown).

Further, on the left side of the transfer charger 5a in the figure, the paper fed from the paper feeding unit is fed to the photosensitive drum 2 to the transfer charger 5 at a predetermined timing synchronized with the leading edge of the image, for example.
A pair of timing rollers 13 for sending out the paper is arranged between a.

3> Paper refeeding unit 103 The paper refeeding unit 103 is capable of composite copying (copying that creates a composite image on the same side of paper using two image creation processes) and double-sided copying (two-time image creation process). This is used for copying, in which images are created on the front and back sides of paper, respectively.

That is, by switching the switching claw (not shown), the paper on which the image has been formed on the first side can be transferred to the paper path 53 during composite copying.
0 so that the first side faces down, or when duplex copying, passes through paper paths 530 and 531 so that the first side faces up, and is temporarily stored in the paper refeed tray 58. Ru.

Thereafter, at a predetermined paper refeeding timing, the paper refeed roller 38
The paper is pulled out from the tray 58 by the paper feed path 540, reaches the timing roller pair 13, and is subjected to image formation again.

The paper is fed with the first surface facing the photosensitive drum 2 during composite copying, and with the first surface facing the transfer charger 5a during double-sided copying.

<4> Paper Feed Unit 104 The paper feed unit 104 includes an upper paper tray 42 and a lower paper tray 43 that respectively store sheets of different sizes.

The paper in each tray is handled by a paper feed roller 18, a paper feed slot roller 19,
After the paper is pulled out at the specified paper feeding start timing,
The sheet is fed to the pair of timing rollers 13 by the automatic sheet feeding mechanism, and an image is formed as described above.

<5> ADF400 The ADF400 has a document placement section 451 and a document transport section 452.
It consists of

The document placement unit 451 includes a document tray 405 , a document feed roller 403 , a drive motor 401 for the roller 403 , and a document set sensor 411 that detects the presence or absence of a document on the tray 405 .

The document transport section 452 sets the document fed from the document placement section 451 at a predetermined position on the document table glass 16, and also discharges the document after scanning is completed.
10, a document conveyance belt 404, a drive motor 402 for the belt 404, and a document discharge sensor 413, and a document discharge tray 406 is installed at the top.

The ADF 400 is a control CPU of the copying machine main unit.
In response to an ADF start signal (see 5405 in FIG. 9) transmitted from 201 (see FIG. 3), feeding of the original is started (see 5703 in FIG. 12). Furthermore, when the document is stopped at a predetermined position on the document table 16, the CPU
201 (Fig. 13, 594)
5), start the copying operation on the main unit side (see 9th
(See Figure 5409).

(2) Signals output by humans Next, with reference to FIGS. 2 to 4, the human output of signals in this copying apparatus will be explained.

1) Operation panel: Figure 2 The operation panel of the copying machine includes a print key 160 for instructing the start of copying operations.
, a group of numeric keys 161 for inputting numerical values, a group of magnification select keys 162 for selecting the copy magnification,
Magnification display LED group 131 for lighting up and displaying the selected magnification. 2inl key 1 for commanding 2inl mode setting
64.2 2in1 display LED 132 that lights up to display the setting status of inl mode, double-sided copy key 165 for commanding the setting of double-sided copy mode, double-sided display LED 13 that lights up and displays the setting status of double-sided copy mode
3. Paper feed select key 166 for selecting and setting the paper feed for copy paper from either the upper paper feed or lower paper feed
, Upper paper feed display LE that lights up to display the setting status of the paper feed slot.
D134, ED135 for displaying the lower paper feed, a filing mode key 163 for instructing the setting of a filing mode for forming a binding margin on copy paper, a filing display LED 130 for lighting up and displaying the setting state of the filing mode, etc. key switch, CH group, LE,
, D display element group, and a fluorescent display tube 300 for displaying various messages and the like are arranged.

2> Control circuit: Figures 3 and 4 In this copying machine, key input signals from the operation panel mentioned above and sensor input signals from sensors arranged in various parts of the copying machine are sent to the CPU 201 (Figure 3). ) and CPU220
(Fig. 4) and performs various processes shown in the flowchart (described later), the display on the operation panel,
Further, drive control of various operating parts is performed.

The control circuit is mainly configured with a CPU 201 for controlling the main device and a CPU 220 for controlling the ADF 400.

The CPU 201 is connected to various key switch groups 160 to 166, various sensor groups, and SW500 via input expansion rc202 to 205 controlled by a decoder 206.
, SW501, etc. are input.

Further, from the CPU 201, via output expansion ICs 207 to 210 controlled by decoders 211 and 212,
A group of LED display elements 130 to 135 on the operation panel, a fluorescent display tube 300, a main motor, a developing motor, a timing roller clutch, which are operating parts of the main body of the copying machine,
Control signals are output to a group of actuating units such as a top paper feed clutch, a bottom picture paper clutch, a transfer charger, an electrification charger, and a paper refeed clutch.

Further, the CPU 201 connects to the CPU 22 via the bus 214.
0 and communicates with the CPU 220,
It is also connected to a battery-backed RAM 213.

On the other hand, the CPU 220 communicates with the CPU 201 via the bus 214, and receives signals from the document set sensor 411, document feed sensor 410, document discharge sensor 413, etc. arranged in the ADF 400. Also, C
The PU 220 outputs control signals to the document feed motor 401 and document transport motor 402.

(3) Binding margin forming position and method Next, with reference to FIG. 15, the binding margin position and its forming method in the first embodiment will be explained.

In the first embodiment, the inter-image eraser 7a eliminates static electricity from the area on the photosensitive drum 2 corresponding to the binding margin forming area on the paper, and prevents toner from adhering to the area, thereby forming the binding margin. is forming.

Further, ON/OFF of the inter-image eraser 7a is controlled by timers 1 to 6 which are selectively set according to the mode, and a binding margin is formed at the position shown in FIG. 15.

Note that FIG. 15 explains a case where the original set on the original tray 405 is vertically long (the traveling direction when feeding the original is the direction of the short side size of the original). this is,
This is because a 2-in-1 mode is assumed.

l) Fig. 15 (A) In non-filing mode and non-2-in-1 mode.

When the timer B ends, the inter-image eraser 7a is turned off and a timer 6 is started, and when the timer 6 ends, the inter-image eraser 7a is turned on.

The time specified by timer 6 is the time corresponding to the short side size of the paper (=short side size of the original). Therefore, only static electricity removal (erasing) between images is performed, and erasing for binding is not performed. do not have.

ll) Figure 15 (B) Filing mode and non-2-in-1 mode. Furthermore, if a double-sided copy mode for double-sided copying is set, the first side is to be copied.

When timer B ends, timer 1 and timer 6 are started. After that, when the timer 1 ends, the inter-image eraser 7a is set to 0.
When FFL and the timer 6 end, the inter-image eraser 7a is turned on.

The time specified by timer 1 corresponds to the binding width on the leading edge side of the image. Further, the time specified by the timer 6 is a time corresponding to the short side size of the paper.

In this way, a binding margin is formed on the leading edge side of the image.

iii) Fig. 15(C) Filing mode, and non-2-in-1 mode, and
This is when copying the second side in the double-sided copy mode.

At the end of timer B, the inter-image eraser 7a is turned off and timer 2 is started, and at the end of timer 2, the inter-image eraser 7a is turned on.

The time specified by timer 2 is the time obtained by subtracting the amount equivalent to the binding margin from the short side size of the paper.

In this way, a binding margin is formed on the rear end side of the image.

iv) Figure 15 (D) 2-in-1 mode and non-filing mode.

When the timer B ends, the inter-image eraser 7a is turned off and the timer 5 is started, and when the timer 5 ends, the inter-image eraser 7a is turned on.

Since the time specified by the timer 5 corresponds to the long side size of the paper (=short side size of the document x 2), only erasing between images is performed, and erasing for binding is not performed.

(2) Fig. 15 (E> 2-in-1 mode, filing mode, and single-sided copy mode).

When timer B ends, timer 1 and timer 4 are started. After that, when the timer 1 ends, the inter-image eraser 7a is set to 0.
FFL, and also turns on the inter-image eraser 7a at the end of timer 4; - The time specified by timer 1 is the time corresponding to the binding width on the leading edge side of the image. Further, the time specified by the timer 4 is the time obtained by subtracting the amount equivalent to the binding margin from the long side size of the paper.

In this way, binding margins are formed on both ends of the image. This is a binding margin for so-called double-stitch binding.

vi) FIG. 15 (F) This is the case in 2-in-1 mode, filing mode, and double-sided copy mode.

At the end of timer B, the inter-image eraser 7a is turned off, and timer 2. Timer 3. and starts timer 5. After that, when the timer 2 ends, the inter-image eraser 7a is turned off.
NL, when the timer 3 ends, the inter-image eraser 7a is turned off. Furthermore, when the timer 5 expires, the inter-image eraser 7a is turned on.

The time specified by timer 2 is the time calculated by subtracting the amount equivalent to the binding margin from the short side size of the paper, and the time specified by timer 3 is the time calculated by adding the binding margin equivalent to the short side size of the paper. be. Further, the time specified by the timer 5 is a time corresponding to the long side size of the paper. This allows the center of the paper (2
Binding margins are formed on both sides from the boundary between two originals fed under the in1 mode. This is the so-called binding margin for spine binding.

(4) Operation of the copying apparatus Next, the operation of the present copying apparatus will be explained in accordance with the processing by the CPU.

In the following explanation, ○N edge or ○FF edge means that the state of a signal, etc. changes from OFF to ON (or from ON to 0F).
This refers to the state change when switching to F).

[A) CPU 201 on the main body side First, the processing in the control CPU 201 on the main body side will be explained.

<1> Main Routine FIG. 5 is a flowchart showing the main routine of processing by the CPU 201 on the main body side.

For example, the CPU 201 starts processing by turning on the power, and first performs initial settings such as clearing the RAM 213 (Sll).

Next, start the internal timer that manages the execution time of one routine (S13), and start the 2inl key processing routine (S15: 2inl key 16).
(S17: Duplex copy key processing routine (S17: Duplex copy 1-
165); Filing key processing routine (S19: Setting/cancelling the filing mode in response to filing key 163 input) Copy operation routine (S21) : processing for controlling the copy operation) and other processing (S23) other than the above, and after waiting for the internal timer to end in step S25, the process returns to step 513 and repeats the process. Execute.

<2> 2inl Key Processing Routine FIG. 6 is a flowchart showing the processing at step S15. This process is executed in response to input from the 2inl key 164.

That is, when the ON edge of the 2inl key 164 is detected (SIO1; YES), the previous mode is first determined (5103).

As a result, if the previous mode was 21n1 mode (S103; YES), cancel 2inl mode,
The 2in1 display LED 132 indicating the mode is turned off (S105). Further, the 2inl signal to be transmitted to the ADF control CPU 220 is set to "0" (S107).

On the other hand, in step 5103, the previous mode is 2in.
If it is determined that it is not in l mode (S103; No
), 2 in 1%-)' and turn on the 2in1 display LED 132 indicating the mode (S109)
. In addition, 2i to be sent to the CPU 220 for ADF control
Set the nl signal to “1” (Sill). As a result, A
On the DF side, document feeding is performed in 2-in-1 mode (S
905, 5907: see Figure 13).

3> Double-Sided Copy Key Processing Routine FIG. 7 is a flowchart showing the processing in step S17. This process is executed in response to the double-sided copy key 1650 input.

That is, when the ON edge of the duplex copy key 165 is detected (S201; YES), the previous mode is first determined (S203).

As a result, if the previous mode was double-sided copy mode (S203: YES), the double-sided copy mode is canceled and the double-sided copy display LED 133 indicating the mode is turned off.
F (S205). Also, the double-sided copy flag is lowered (S207).

On the other hand, if it is determined in step 5203 that the previous mode was not double-sided copy mode (S203;
No), set the double-sided copy mode and turn on the double-sided copy display L E Dl 133 indicating the mode (52
09). Also, set the double-sided copy flag to “1” (S2
11).

4> Filing Key Processing Routine FIG. 8 is a flowchart showing the processing in step S19. This process is executed in response to input of the filing key 163.

That is, when the ON edge of the filing key 163 is detected (5301; YES), the previous mode is first determined based on the filing flag (5303).

As a result, if the filing mode is set (S303, YES), the filing flag is set to “0”.
” to cancel filing mode (3305)
. Furthermore, a filing display LED 1 indicating the mode
30 is turned off (S307).

On the other hand, if it is determined in step 5303 that the previous mode was not filing mode (S303
;No), and set the filing flag to “1” (S30
9) Set the filing mode. Additionally, the filing display LED 130 indicating the mode is turned on (S
311).

5> Copy Operation Routine FIG. 9 is a flowchart showing the processing in step S21.

Steps 8401 to 5411 are processes for starting a copy operation.

When the ON edge of the print switch 160 is detected (S401; YES), if a document is set on the document tray 405 (S403; YES)
, the ADF start signal to be transmitted to the ADF control CPU 220 is set to "1" (S405). This results in
On the ADF 400 side, document feeding is started.

Further, when the original is set at a predetermined position on the original platen 16 by the ADF 400 and the original position signal is transmitted from the CPU 220 for controlling the ADF, (5409; YE
S, see 8945 in FIG. 13) and sets the copy start flag (3411). This starts the copy operation.

On the other hand, when the ON edge of the print switch 160 is detected ('5401; YES), if no original is set on the original tray 405 (S403; No), a copy start flag is set (S407), and the copy operation is performed. start. This is a copy of an original that has been manually set on the original table 16.

Steps 8413 to 5431 are processes performed at the start of a copy operation.

When the copy start flag is set (S413; Y
ES) Starts the operation of the main motor, developing motor, charging charger 6, and transfer charger 5a, and resets the copy start flag.

Also, timer A and timer B are started, and the inter-image eraser 7a is turned on (S415).

Further, depending on the set mode and the selected paper feed cassette, the clutch of the paper feed roller is turned on to start feeding copy paper.

That is, if it is not the double-sided copy mode (S417; Y
ES), the surface flag is set to "0" and the double-sided switching clutch is turned off (S419). Furthermore, turn on the clutch of the paper feed roller of the selected paper feed slot (S
427, 3429° 5431), starts paper feeding.

On the other hand, if it is double-sided copy mode (3417;N
o), whether the image should be created on the front side (first side) of the paper or the back side (second side).
depending on the surface flag that controls whether the image should be created on (3
421), a paper feed port selection process is performed.

That is, when forming an image on the first side of the paper (S421; Y
ES), after setting the duplex switching clutch ONL and ejecting the paper to the paper refeeding unit 103 (S423), the clutch of the paper feed roller of the selected paper feed slot is turned ON (3
427, 5429, 5431) to start paper feeding.

Also, when creating an image on the second side of the paper, 5421;No.
), turn the double-sided switching clutch ○FFI, and release the paper output tray 36.
After setting the paper ejection to the paper refeed unit 103, turn on the paper refeed roller clutch to start paper feeding from the paper refeed unit 103 (3
425).

Steps 5433 to 5435 are processes executed when timer A ends.

That is, when the time specified by timer A has elapsed from the copy start time (3433; YES), the clutch of the paper feed roller is turned off (S435), and the feeding of copy paper is stopped.

Further, steps 5437 to 5441 are processes executed when timer B ends.

That is, when the time specified by timer B has elapsed from the copy start time (S4.37; YES), the scanning operation is started (3439) and the filing mode switching routine is executed (S441).

The filing mode switching routine uses the inter-image eraser 7.
This process selects and starts timers 1 to 6, which are used to manage ON-OFF of a, according to the set mode. In addition, each timer 1 to 6 started in this routine is executed in steps 5443 to 5445 and 5451 to 5.
The end is determined in 469, and the inter-image eraser is turned on and off.
will be held. As a result, a binding margin is formed as shown in FIG. 15 described above. This will be explained below with reference to FIGS. 10 and 15.

l) Non-filing mode and non-2-in-1 mode (
S5Q1; No, 3519: No) In order to control as shown in FIG. 15 (Δ), the inter-image eraser 7a is turned off and the timer 6 is started (3523).

The inter-image eraser 7a is turned on at the end of the timer 6 (S
455,5457).

11) Filing mode and non-2-in-1 mode (
S501 ; YES, 5503 ; No), and the first side in single-sided copy mode or double-sided copy mode (S5
11; YES/5515; No) Timer 1 and timer 6 are started for control as shown in FIG. 15(B) (S513).

The inter-image eraser 7a is set to 0FF (S44) at the end of timer 1.
3.5445), is turned ON when timer 6 ends (S45
5.5457).

iii) Second side of filing mode, non-2-in-1 mode, and double-sided copy mode (S501; Y
ES, 3503; No, 5511; No.

5515 ; YES) In order to control as shown in FIG. 15(C), the inter-image eraser 7a
OFF and starts timer 2 (S
517).

The inter-image eraser 7a is turned on at the end of the timer 2 (S
451,5453).

1v) 2-in-1 mode and non-filing mode
(S501; No, S519; YES) Figure 15 (
In order to control as in D), the inter-image eraser 7a is turned off and the timer 5 is started (S521).

The inter-image eraser 7a is turned on at the end of the timer 5 (
S467.5469).

■) 2-in-1 mode, filing mode, and single-sided copy mode (S501; YES.

5503: YES, 5505; YES) Figure 15 (
In order to control as in E), timer 1 and timer 4 are started (3507).

The inter-image eraser 7a is set to 0FF (S44) at the end of timer 1.
3,5445), is turned ON when timer 4 ends (S46
3,5465).

vi) 2-in-1 mode, filing mode, and double-sided copy mode (S501; YES.

5503 ; YES, 5505 ; No) Figure 15 (F
), the inter-image eraser 7a is turned off and the timer 2. Timer 3. Timer 5 is started (S509).

The inter-image eraser 7a becomes 0N (5451) at the end of timer 2.
, 5453), turns OFF when timer 3 ends (S459,
5461) is turned ON when timer 5 ends (S467.
5469).

As described above, a binding margin is formed by turning on and off the inter-image eraser 7a managed by the timers 1 to 6.

In steps 3447 to 5449, the optical system scanner
This is a process executed when the position of SW500 is reached.

That is, when the scanner reaches the position of the SW 500 and the timing signal is set (S447; YES), the clutch of the timing roller 13 is turned on and the paper is sent between the photosensitive drum 2 and the transfer charger 5a. Also, timer C is started (S449).

Timer C is a timer that defines the duration of scanning. That is, when the timer C ends (S471; YES),
The charger 6 is turned to FFL, the scan is completed, a return flag is set, and the clutch of the timing roller 13 is turned off (S473).

Steps 8491-5492 or 5475-548
9 is a process executed when the scanner returns.

That is, when the set number of copies (multi-copy) has not yet been completed (S474; No), if the scanner return operation (return) is started (S490; YES).
S), sets the copy start flag (S491),
Prepare for the next copy of the same original. Furthermore, the return flag is reset to "0" (S492).

On the other hand, when multi-copy has finished (S4
74 ; YES), if the return has started (S
475 ; YES), in double-sided copy mode (S4
77; No), after inverting the surface flag (S47
9 to 5483), and in single-sided copy mode, (
S477; YES) Each return flag is reset to "0" (S485).

After that, the scanner waits for the scanner to return to its home position (the position of the switch SW501), and when it returns to its home position (3487;
YES), set the developing motor and transfer charger 5a to 0F.
FL also starts timer D (5489)
.

Timer D is a timer that manages the end of copying, and when it ends (S493; YES), the main motor turns O.
It is turned FF (S495).

CBEADF Side CPU 220 Next, the processing in the ADF side control CPU 220 will be described.

1> Main Routine FIG. 11 is a flowchart showing the main routine of processing by the control CPU 220 on the ADF 400 side.

For example, the CPU 220 starts processing by turning on the power, and first sets an initial state (S51).

Next, start the internal timer that specifies the execution time of the routine (353), the document control routine (S5
5) and other processing (357) are executed.

After that, after waiting for the internal timer to end (S59, Y
ES), the process returns to step S53 and the process is repeated.

2> Original Control Routine FIG. 12 is a flowchart showing the processing in step S55.

Steps 8701 to 5709 are processes for starting document feeding.

That is, there is a document in the document tray 405 (S701; Y
ES) and the ADF start signal from the CPU 201 becomes "1"(S703; YES, 540
5), the conveyor belt motor 402 and the document feed motor 401 are set to 0NL (S709) to start feeding the document.

Also, if the document feed flag is set to “1” (
S705; YES, see 3803) After resetting the document feed flag (3707), turn on the conveyor belt motor 402 and document feed motor 401 (S7
09), starts feeding the next original.

In step 5711, document feeding processing is executed. Details will be described later.

Also, when the set number of copies (multi-copy number) of the same document is completed (S713; YES)
), a scan end flag is set (S715), and in response to the setting of the scan end flag (S717;
YES) After resetting the scan end flag, document ejection processing is executed (S719, 5721). Details of the document ejection process will be described later.

3> Original Paper Feeding Processing Routine FIG. 13 is a flowchart showing the processing in step 5711.

Steps 5901 to 5909 are processes executed in response to the start of feeding of odd-numbered originals such as the first original in the 2-in-1 mode and originals in the normal mode.

First, if “flag A=0” (S901; YES,
In the initial state, “Flag A=0”), document feed sensor 41
0 ON edge (S903; YES), CPU20
The 21n1 signal from 1 is determined (5905).

As a result, if 2inl mode is set (S
905; YES, see Sl 11), sets the 21n1 flag and starts timer A1 (S907)
. Timer A1 is a timer that defines the ON time of document feed motor 401.

Also, if it is not 2 inl mode (S905; No
, 5107), resets the 2inl flag, starts timer A1, and further sets flag K (S909).

Steps 5913 to 5923 are processes for controlling document feeding and positioning under 21n1 mode.

That is, under the 2inl mode setting (S911, Y
ES), when the OFF edge of the document feed sensor 410 is detected (S913; YES), flag A is determined (S915).

As a result, if “flag A=O” (S915, YE
S) That is, if the document whose trailing edge was detected in 5913 is an odd-numbered document, it is determined whether there is a next document in the document tray 405 (S917).

As a result, if there is a next manuscript (S917; YES)
, sets flag A to "1". Further, the conveyance belt motor 402 is turned off to stop the conveyance of the odd-numbered document (the document whose trailing edge has been detected), and the document feed motor 401 is turned on to transfer the next document (the even-numbered document). Paper feeding is started (S921).

On the other hand, if it is determined in step 5917 that there is no next document (S917, NO), timer A2 is started (3919). Timer A2 corresponds to the time required to transport the final document to the set position on the document table.

Note that in step 5915, “flag A=l
” (S915; YES), I+] If the document whose trailing edge was detected is an even-numbered document, flag 8 is reset to “0” and timer A2 is started (S923). .

Steps 5925 to 5929 are processes for controlling document feeding and positioning in non-2inl mode.

In other words, when it is not the 2inl mode (S911;
No), if the flag K indicating that the document is being fed is set (3925; YES), the process waits for the OFF edge of the document feed sensor 410 (S927).
;YES), reset flag K. Also, timer A2 is started (3929).

8931-5945 are the steps 8911-592
9, and ○N-0F in the process in step 5709.
This is a process of turning on and off the original document feed motor and conveyance belt motor that have been turned on at predetermined timings managed by the timer AI and timer A2 described above.

That is, by the end of timer Δ1 (S931; YES),
The document feed motor 401 is turned off (8933).

In addition, under the state of "flag A = 1" indicating that an even-numbered document is being fed under the 21n1 mode (3935
; YES), when the ○N edge of the document feed sensor 410 is detected (S937; YES), the conveyor belt motor is turned on to start conveying the previous document, and timer A1 is activated.
(3939).

Also, at the end of timer A2, which is the timing when the document being fed is positioned at the set position on the document table (S941
; YES), turn off the conveyor belt motor (S
943). Also, set the original position signal to “1” and the CPU
201 (S945). As a result, CPU2
01 initiates a copy operation (5409.5411
reference).

4> Original Discharge Processing Routine FIG. 14 is a flowchart showing the processing in step 5721.

If there is a next document in the document tray 405 (S801;
YES), set the document feed flag to “1” (S8
03), the next original is fed and the original on the original platen is ejected (see S705, 5707 to 5709).

On the other hand, if there is no next document in the document tray 405 (S8
01; No), rotate the conveyor belt motor 402 (
S805), the document on the document table is ejected. The time required for ejection is managed by timer B1 (S807, 5809
, 5811).

As described above, the copying apparatus is controlled, and the binding margin under the various modes set is controlled when the inter-image eraser is turned on.
Executed by OFF.

(5) Second Embodiment In the second embodiment, a binding margin is formed by reduction copying. This is intended to prevent image loss, and is realized by executing the process shown in FIG. 16 in the main routine of the CPU 201 (FIG. 5).

The second embodiment may be used in combination with the first embodiment described above to perform erase management using timers 1 to 6, or may be used alone.

The second embodiment will be described below with reference to FIGS. 16 and 17. In addition, when adding the flowchart of FIG. 16, some modifications are also required regarding the processing on the CPU 220 side.

i) Figure 17 (A) Non-filing mode and non-2-in-1 mode (
S601; No, 5629; No).

In this case, the document feed mode is canceled (S633).

As a result, the original is positioned at the normal setting position, and normal copying is performed.

11) Figure 17 (B) Filing mode, non-2-in-1 mode, and
The first side (S) in single-sided copy mode or double-sided copy mode
601; YES, S603; No.

5619; YES/5625; No).

In this case, the document feed mode is canceled (S617).

As a result, the original is positioned at the normal setting position. Also, set the reduction magnification for binding substitute 5621),
Furthermore, the timing signal is delayed by an amount equivalent to the amount of paperback generated by reduction copying at the above-mentioned magnification (3623). In addition, when using the above-mentioned timers 1 to 6, the reduction magnification is set so that the above-mentioned delay time and the time of timer 1 match.

In this way, a binding margin is formed on the leading edge side of the image by reduced copying.

iii) Fig. 17(C) Filing mode, and non-2-in-1 mode, and
2nd side in double-sided copy mode (S601; YES, 5
603; No, 3619; No.

3625; YES).

In this case, the document feed mode is canceled (S617).

As a result, the original is positioned at the normal setting position. Also, set the reduction ratio for binding (3627
).

In this way, a binding margin is formed on the rear end side of the image by reduced copying.

iv) Figure 17 (D) 2-in-1 mode and non-filing mode (560
1; No, S629; YES).

In this case, set document feed mode A (3631
). This is a mode in which documents are continuously fed in the 2-in-1 mode without any gaps, and copying is performed in the normal 2-in-1 mode.

■) Figure 17 (E) 2-in-1 mode, filing mode, and single-sided copy mode (S601; YES, 5603
; YES, 5605, YES) In this case, the reduction magnification for the binding substitute is set (5607), and the timing signal is delayed by the amount equivalent to the binding margin formed by the reduced copying at the above magnification (3611). Furthermore, document feed mode A is set (3609).

In this way, binding margins are formed at both ends of the paper by reduced copying. This is a binding margin for so-called double-stitch binding.

vi) Figure 17 (F) 2-in-1 mode, filing mode, and double-sided copy mode (S 601 ; YES, 5603
; YES, 5605 ; No).

In this case, set the reduction magnification of the binding substitute5613)
, and further sets document feed mode B (S615).
. Document feeding mode B is a mode in which a gap is created between documents that are continuously fed in the 2-in-1 mode.

In this way, a binding margin is formed in the center of the paper by reduced copying. This is the so-called binding margin for back sipping.

As described above, the binding margin formation in the serious case 2 example is performed.

Note that, in response to the setting of document feed mode B in FIG. 16, the document feed timing in the processing on the CPU 220 side must be slightly changed. Details are omitted.

〔Effect of the invention〕

As described above, the present invention provides a 2-in-1 mode input means, a simplex/duplex mode input means, a binding margin mode input means, a mode control means, and a binding margin mode when the binding margin mode is set together with the 2-in-1 mode and the single-sided mode. Binding margin control means for forming non-image areas for binding at both ends, and for forming a non-image area for binding at the center of the copy paper when the binding margin mode is set together with the 2-in-1 mode and duplex mode. It is a copying device.

According to the present invention, when formation of a binding margin is commanded by the binding margin mode input means, the binding margin forming position is automatically determined in consideration of other modes.

That is, the user can form the binding margin at the optimal position without confusion.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of the mechanism of the copying apparatus according to the embodiment, and FIG.
The figure is an explanatory diagram of the operation panel of the above device, Fig. 3 is a configuration diagram of the control circuit on the main body side of the above device, and Fig. 4 is an illustration of the AD of the above device.
The input/output configuration diagram of the control circuit on the F side, Figure 5 is the CP on the main body side.
Flowchart showing the main routine of processing in U, FIG. 6 is a flowchart showing processing in the 2-in-1 key processing routine in FIG. 5, and FIG. 7 shows processing in the double-sided copy key processing routine in FIG. 5. Flowchart, FIG. 8 is a flowchart showing the processing in the filing key processing routine of FIG. 5, FIGS. 9(A) to (D) are a flowchart showing the processing in the copy operation routine of FIG. 5, and FIG. A flowchart showing the processing in the filing mode switching routine of FIG. 9(B), FIG. 11 a flowchart showing the main routine of processing in the CPU on the ADF side, and FIG. 12 a flowchart showing the processing in the filing mode switching routine of FIG. 11. A flowchart showing the processing; FIG. 13 is a flowchart showing the processing in the document feeding processing routine of FIG. 12;
FIG. 14 is a flowchart showing the processing in the document ejection processing routine of FIG. 12; FIG. 15 is an explanatory diagram of the relationship between the timer shown in FIGS. 16(A) and 16(B) are flowcharts showing processing in a filing mode setting routine executed in the second embodiment, and FIG. 17 is an explanatory diagram of the document feeding mode shown in FIG. 16. 163...Filing mode key 164...2-in-1 mode key 165...Double-sided copy mode key

Claims (1)

[Claims] (1) A copying machine equipped with an automatic document feeder for feeding originals onto the original table of the main unit and a device for double-sided copying, which feeds two sheets of originals onto the original table. 2-in-1 for commanding the setting of 2-in-1 mode for copying on one sheet of copy paper.
mode input means, single-sided/duplex mode for instructing setting of a single-sided mode for copying on one side of copy paper, or a duplex mode for copying on both sides of copy paper;
duplex mode input means; binding margin mode input means for instructing setting of a binding margin mode for forming a binding margin on copy paper; mode control means for setting the mode commanded by the input means; binding margin mode is 2-in-1. When set together with 2-in-1 mode and simplex mode, a non-image area for binding is formed at both ends of the copy paper, and when set with 2-in-1 mode and duplex mode, a non-image area for binding is formed in the center of the copy paper. A copying apparatus comprising: binding margin control means for forming a non-image area.