JPH09149193A - Digital image forming device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To generate copies in the order of pages of double side originals without using an original reversing mechanism when the operation of the original reversing mechanism of an original carrier is disable. SOLUTION: An original carried on an original glass 18 by an automatic draft reader (ADF) 500 is read by a scanner 19 and stored in an image memory as image data in the unit of pages. When the operation of the original reversing mechanism (reverse roller 507 and switching claw 508 or the like) of the ADF is disable, a 1st side of the original is carried to a read position in the order of the originals set by the ADF to read an image and the page sequence of the print image is managed in the read order. After the end of reading of the 1st side, the 2nd side of the original set again to the ADF is carried to the read position in the same order as above and the image is read and the page order of the print image is managed in a different order from the read order (reverse order). Copies are generated in the order of pages of the double side originals are generated without using the original reversing mechanism.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital image forming apparatus, and in particular, as an operation mode for forming an image, an original both-sided mode for reading a double-sided original and a copy for recording an image on both sides of recording paper. The present invention relates to a digital image forming apparatus which can be selectively provided with a double-sided mode and can make a copy in a predetermined page arrangement order.

[0002]

2. Description of the Related Art A first original image is copied onto one side of a recording sheet fed from a normal first sheet feeding device, and the recording sheet on which an image is formed is temporarily transferred to a second tray such as an intermediate tray. The second original image and then the second original image is copied to the unrecorded surface of the recording paper fed from the second paper feeding device, and both sides of the recording paper can be copied. The machine is already widely used.

In such a conventional double-sided copying machine, in addition to a copy double-sided mode for recording images on both front and back sides of recording paper,
It is common to have a copy single-sided mode that records an image on only one side of the recording paper.If the copy cannot be operated for some reason while operating in copy-double-sided mode, It has been proposed that the operation can be continued by switching to the copy one-sided mode (see Japanese Patent Laid-Open No. 3-254964).

[0004]

SUMMARY OF THE INVENTION In this type of copying machine,
Since a large number of original sheets are automatically conveyed continuously on the original table, an original conveying apparatus is often installed and used on the original table. In this case, since a double-sided original having original images on both sides of the original sheet is processed, the original sheet is fed to the original feeding device.
There is a document reversing device that reverses the front and back sides and re-feeds the paper for reading the second side after the reading of the first side.

However, if the document reversing device of the document conveying device becomes inoperable for some reason, the double-sided document cannot be processed. In this case, it is possible to stop the use of only the original reversing device of the original conveying device and convey the original sheet, but in this case, it is not possible to copy the double-sided original from the double-sided original. The work of matching the page order of the copy page with the page order of the copy becomes extremely complicated. Even in a conventional copying machine capable of copying on both sides, as described above,
Although measures have been proposed for the case where operation is disabled for some reason while operating in the double-sided mode, measures are taken for cases where the document reversing device of the document feeder is disabled for some reason. It has not been proposed yet. An object of the present invention is to solve the above problems.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an image reading means for reading an original image, converting it into an image signal and outputting the image, and a plurality of storages corresponding to respective pages of the original. An image signal storage unit having an area for storing image signals of a plurality of pages of originals read by the image reading unit in the plurality of storage regions; and a plurality of storage regions of the image signal storage unit. Image forming means for forming images on both front and back sides of the recording sheet based on the read image signal, document conveying means for conveying the document sheet to a predetermined reading position on the document table, and image forming operation As a mode, a digital image forming apparatus optionally provided with an original double-sided mode for reading a double-sided original and a copy double-sided mode for recording an image on both sides of a recording paper is provided with a control means, and the control means Is the both-sided document mode. When it is determined that the original reversing means of the original conveying means is inoperable when selected, the first side of the original is read in a predetermined manner in the order of the originals set in the original conveying means. The image is read by the image reading means after being conveyed to a position, the page order of the images to be printed is managed in the reading order, and when the image reading of the first side of the original is completed, the original is returned to the original feeding means. The set originals that have been read are conveyed to the predetermined reading position on the second side of the originals in the same order as the previous conveying order, the image is read by the image reading means, and the images are printed in a different order from the reading order. The page order of the images to be reproduced is managed, and when it is determined that the document reversing unit of the document conveying unit is in an operable state, the document first surface and the second surface are set in the order set by the document conveying unit. Face in order And conveying the taken position to read an image by the image reading means, Bae print image to be in the reading order - and controls to manage di sequence.

The control means is in a state in which the document reversing means of the document conveying means is inoperable when the document conveying means is not provided with the document reversing means for reversing the front and back of the document sheet. It is advisable to determine that the control is performed.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION When it is determined that the document reversing means of the document feeding means is in an inoperable state when the both-sided document mode is selected, the control means first feeds the document. The first surface of the original is conveyed to a predetermined reading position in the order of the original set in the means, the image is read by the image reading means, and the page order of the images to be printed is managed in the reading order. When the image reading on the first side of the original is completed, the read original set on the original conveying means is conveyed to the predetermined reading position on the second side of the original in the same order as the previous conveying order. The image is read by the image reading means, and the page order of the images to be printed is managed in the order different from the reading order, that is, in the order opposite to the reading order.

When it is determined that the original reversing means of the original conveying means is in an operable state, the first and second originals are sequentially conveyed to a predetermined reading position in the order set by the original conveying means. The image is read by the image reading means, and the page order of the images to be printed is controlled in the reading order.

[0010]

Embodiments of the present invention will be described below.

[Overall Configuration of Copying Machine] FIG. 1 is a sectional view showing the overall configuration of a copying machine to which the present invention is applied, and FIG. 2 is a front view of an operation panel.

1 and 2, a copying machine 1 reads a document and converts it into an image signal, a scanning system 10, an image signal processing section 20 for processing an image signal sent from the scanning system 10, and an image signal processing section 20. Based on the image data output from the memory unit section 30 and the memory unit section 30 for controlling whether the image data input from the printer is output to the printer as it is or stored in the memory. The print processing unit 40 that drives the semiconductor lasers 61 and 62, and the two laser lights from the semiconductor lasers 61 and 62 are used as the photosensitive drum 7.
Laser optical system 6 for guiding different exposure positions on 1
0, the latent image by exposure is developed, transferred onto recording paper, and fixed to form an image, an image forming system 70, a scanning panel OP provided on the upper surface of the main body of the copying machine, a document is conveyed, and if necessary. Document transport unit (hereinafter referred to as ADF) that reverses the front and back sides 5
00, and a re-feeding unit 600 for supplying the recording paper to the transfer position again, and a manual paper feeding unit 700 for supplying the recording paper stacked by the operator to the transfer position. .

The scanning system 10 and the image signal processing section 20
And the like, and the printer PRT is constituted by the print processing unit 40, the laser optical system 60, the image forming system 70, and the like.

The scanning system 10 includes an exposure lamp 11 and a first mirror 12, and second and third mirrors 13a and 13 mounted on a scanner 19 which moves below a platen glass 18.
b, condensing lens 14, dichroic mirror-15, C
It is composed of photoelectric conversion elements 16 and 17 using a CD array and a scan motor M2.

The dichroic mirror 15 reflects the light of a specific color such as red among the light reflected from the document,
Light having a complementary color relationship with light of a specific color is transmitted. The photoelectric conversion elements 16 and 17 individually convert an image of a non-specific color mainly containing black and an image of a specific color (red) in the document into electric signals.

The image signal processing unit 20 processes the image signals output from the two photoelectric conversion elements 16 and 17, and causes each pixel of the original image to have a specific color (second color) and other colors (first color).
Color) to the memory unit 30 and
Output image data with data. Memory unit section 30
Will be described in detail later.

The print processing unit 40 processes one of the image data with color data sent thereto according to the difference between the exposure positions corresponding to the two semiconductor lasers 61 and 62. The image data given to the semiconductor laser 62 is delayed.

The laser optical system 60 includes a semiconductor laser 61,
62, a dichroic mirror 63 for synthesizing two laser beams, a polygon mirror 65 for deflecting the synthetic laser beam, a main lens 69, a reflecting mirror 67a, and a synthetic laser beam. It is composed of a dichroic mirror 68 for separating the laser beam into two laser beams, and reflection mirrors 67b and 67c.

The image forming system 70 comprises a developing and transferring system 70A, a conveying system 70B, and a fixing system 70C.

The development transfer system 70A includes a photosensitive drum 71 which is driven to rotate counterclockwise in FIG. 1, and a first charging charger 7 which is arranged around the photosensitive drum 71 in order from the upstream side in the rotational direction.
2a, the first developing device 73a, the second charging charger 72b,
The second developing device 73b, the transfer charger 74, the separation charger 75, the cleaning portion 76, and the like.

The first developing device 73a contains a two-component developer consisting of a red toner corresponding to the second color and a carrier, and the second developing device 73b contains a black toner corresponding to the first color.
And a two-component developer consisting of a carrier.

The conveying system 70B includes cassettes 80a and 80b for accommodating recording paper, size detection sensors SE11 and SE12 for detecting the recording paper size, a recording paper guide 81, a timing roller 82, a conveying belt 83, and re-feeding. Part 600
Horizontal transport roller 86a for transporting the recording paper loaded from the inside
~ 86c and the like.

The fixing system 70C includes a fixing roller 84 for conveying the recording paper on which the toner image is formed while thermocompression bonding, a discharging roller 85, and a discharge sensor SE62 for detecting discharging of the recording paper on which the fixing process is performed. And so on.

The re-feed unit 600 temporarily stores the recording paper discharged from the discharge roller 85, reverses the front and back in the double-sided mode, and reverses the front and back in the composite mode. The sheet is fed to the horizontal transport roller 86a of the transport system 70B for image formation again without being inverted. The refeed unit 600 is
A switching claw 601 for switching between discharging the recording paper to the discharge tray 621 or guiding it to the re-feeding conveyance path, a conveyance roller 60
2, a reversing roller 603, a reversing sensor SE61, and a switching claw sensor SE63 for detecting that the position of the switching claw 601 is in a position to lead to the re-feeding conveyance path.

In the copy double-sided mode, in the first copying operation, the switching claw 601 is switched to the re-feeding conveyance path side by the solenoid (not shown), and the recording paper having an image formed on one side is conveyed by the conveyance roller. After 602, the reversing roller 603 is reached. When the trailing edge of the recording paper is detected by the reversing sensor SE61, the reversing roller 603 is reversed and the recording paper is horizontally conveyed by the roller.
After reaching the timing roller 82 via the rollers 86a to 86c, it waits. At this time, the next recording sheet is also sequentially conveyed at a predetermined interval, and the number of sheets that can be waited by the horizontal conveying rollers 86a to 86c is the length of the recording sheet if there is no delay in image data. Will depend on.

The ADF 500 automatically conveys the original set on the original feed tray 510 onto the original glass 18, and discharges the original read by the scanner 19 to the original discharge section 511. Is.

In the normal mode, one or a plurality of originals are placed with the surface to be read facing up.
Set to 10. By doing so, the empty sensor SE54 detects that there is a document on the document feed tray. When the operation is started, the lowermost original of the set originals is conveyed by the paper feed roller 501 in order, and is separated by the separation roller 502 and the separation pad 503 to feed one by one. To be paper. The conveyed document passes through the intermediate roller 504, and the skew is corrected by the registration roller 505. Immediately after the trailing edge of the original has passed the left end of the original scale 512, the conveyor belt 506 slightly reverses and stops.

As a result, the right end of the document is at the document scale 5.
12, the original is set at an accurate position on the original glass 18. At this time, the leading edge of the next original has reached the registration roller 505, so that the transport time of the next original is shortened.

When the document is set at the accurate reading position on the document glass 18, the scanner 19 scans the document for reading. When the reading of the original is completed, the original is conveyed to the left by the conveyor belt 506, and the reverse roller 5
The transport direction is changed at 07, and the sheet is discharged above the sheet discharge tray 511 after passing above the switching claw 508.

In the case of a double-sided original, when the reading of the first side is completed, it is conveyed to the left by the conveyor belt 506,
After the conveyance direction is changed by the reversing roller 507, the switching claw 5
At 08, the document is again fed onto the document glass 18, and the second surface of the document is set at the reading position. The original whose second surface has been read is conveyed to the left by the conveying belt 506, and the reverse roller 507, the switching claw 508, and the discharge roller 50 are conveyed.
Then, the sheet is discharged onto the sheet discharge tray 511 via the sheet 9. In addition, a switching claw sensor SE53 is provided near the switching claw to detect that the position of the switching claw 508 is at a position where the document is guided again onto the document glass 18.

The manual feed unit 700 automatically feeds the recording sheets stacked on the manual feed tray 701 to the timing roller 82 by an operator. The manual paper feed section 700 includes a manual paper feed tray 701 and a paper feed roller 70.
2. A separation roller 703, a separation pad 704, a manual paper feed sensor SE71 and the like.

[Operation Panel] FIG. 2 is a plan view showing the structure of the operation panel OP. The operation panel OP includes a liquid crystal touch panel 91, a numeric keypad 92 for inputting the page numbers of originals, the number of copies such as the number of copies, and a copy magnification, and a clear key 93 for returning the number of copies to the standard value "1". Panel reset key 94 that resets the set values set inside the copier to standard values,
A stop key 95 for stopping the copy operation, a start key 96 for starting the copy operation, and an original page input key for selecting whether or not to input a page number to be added to each page of the original document. A display section 90a is provided for displaying -90 and the original page input mode.

Further, the operation panel OP has a copy mode, which is a copy single-sided mode, a copy double-sided mode, and a single-sided 2 mode.
Copy mode setting key 97 for selecting and setting one of in 1 mode, double sided 2 in 1 mode, single sided 4 in 1 mode, double sided 4 in 1 mode, and weekly magazine binding mode, original mode The original mode setting key 98 for selectively setting one of the original single-sided mode, the original double-sided mode, and the book mode, and when all the originals have been read, the completion A reading completion key 99 for inputting facts to the apparatus, a display section 97a for displaying that the copy mode selected and set is a copy single sided mode, and a display for displaying a copy double sided mode Display section 97b, display section 97c for displaying single-sided 2in1 mode, display section 97d for displaying double-sided 2in1 mode, display section 97e for displaying single-sided 4in1 mode, double-sided A display unit 97f for displaying that it is in 4in1 mode, A display unit 97g for displaying the weekly magazine binding mode, a display unit 98a for displaying that the selected and set original mode is the one-sided original mode, and an indication that the two-sided original mode is selected. There is provided a display section 98b for displaying, and a display section 98c for displaying a book mode.

The liquid crystal touch panel 91 is used for the operation state of the copying machine such as the exposure level, the copy magnification, the recording paper size, the resetting of the second side (back side) to the ADF when the both sides of the original, and the copy both sides mode. Operational procedures such as setting the recording paper copied on one side to the manual feed section, occurrence of jams, occurrence of service calls, various abnormal states of the copying machine such as paper empty, etc. In addition to displaying other information, the liquid crystal touch panel can be used to input image density, copy magnification, and designation of automatic selection mode of recording paper.

FIG. 3 shows an example of a display on the liquid crystal touch panel 91. FIG. 3A shows a message prompting to reset the second side (back side) of the document to the ADF in the both-sided mode of the document. The message shown in FIG. 3 (b) is a message prompting the user to set the recording paper to the manual paper feed section in the copy double-sided mode.
FIG. 3C shows a message display for prompting the input of a page number (hereinafter referred to as page input) when the original arrangement order and the page number order are different. Here is an example.

[Control Unit] FIGS. 4 and 5 are block diagrams showing the configuration of the control unit 100 of the copying machine.
0 is mainly composed of eight CPUs 101 to 108. These CPU 101 to CPU 108 include ROM 111 to ROM 11 storing programs, respectively.
8 and RAMs 121 to 128, which are work areas, are connected.

Further, the CPUs 101, 102, 105, 1
06, 107, and 108 are connected to each other via a serial input / output interface (serial I / O) 110, and are configured to exchange necessary information.

The CPU 101 controls input from various operation keys of the operation panel OP and display output to the display section. The CPU 102 controls each unit of the image signal processing unit 20, and the CPU 103 controls driving of the scanning system 10.
Further, the CPU 104 includes a print processing unit 40 and a laser optical system 6
0 and the image forming system 70 are controlled, and the CPU 105 performs processing for adjusting the overall timing of the control unit 100 and setting the operation mode.

By controlling the memory unit section 30, the CPU 106 temporarily stores the read image data in the image memory 304, reads it, and outputs it to the print processing section 40.

The CPU 107 controls input from various sensors of the ADF 500 and control of document transportation, determines whether or not the document reversing unit is operable by the input from various sensors, and outputs the result to the CPU 105. CPU10
Reference numeral 8 controls inputs from various sensors of the re-feeding unit 600 and controls re-feeding, and further determines whether the re-feeding unit can operate based on the inputs from the various sensors, and outputs the result to the CPU 1
Output to 05.

Next, each processing unit for processing the image data will be briefly described.

The image signal processing unit 20 includes an A / D converter, a shedding correction unit, a color discrimination unit for discriminating the color of the pixel of the document based on the image data, a scaling processing unit, and an image quality correction unit. Etc. The image signals input from the photoelectric conversion elements 16 and 17 are A / D converted and quantized into image data of 8 bits for each pixel, and shade correction, pixel color discrimination, scaling processing, After being subjected to various processes such as image quality correction and the like, it is output as image data D2. Along with this, a 1-bit color data corresponding to each pixel of the image data D2, which indicates whether or not it is a designated specific color.
Data DC is output.

Next, the memory unit section 30 will be described.

FIG. 5 is a circuit block diagram of the memory unit section 30. The memory unit unit 30 includes a switching unit 30.
1. A binarization processing unit 302 that creates binary data based on parameter settings from the CPU 106, and a multiport image memory 304 having a capacity of 2 pages of A4 size at 400 dpi, respectively. Compressor 3 that can operate independently
11, a code processing unit 305 having a decompressor 312, a code memory 306 having a multiport, and a rotation processing unit 30.
7. A multilevel halftoning processing unit 308 that creates multilevel data based on parameter settings from the CPU 106, a CPU 106 that controls all of these, and the like.

When the image data D2 is written in the image memory 304, the code processing unit 305 reads the data, compresses the data to create code data, and writes the code data in the code memory 306. Further, in accordance with a command from the CPU 106, the code data written in the code memory 306 is read and expanded to create image data, which is written in the image memory 304.

When one page of image data is generated in the image memory 304 by decompression, the image data is read out, rotated in the rotation processing unit 307 as necessary, and multivalued. Multi-valued image data is generated in the unit 308, and this is output as image data D3. The compressor 311 and the decompressor 312 can operate independently of each other and in parallel.
The data is DMA-transferred between and.

The code memory 306 is managed by the management table MT1 stored in the RAM 126.

FIG. 6 is a diagram showing the relationship between the management table MT1 and the code memory 306. The code memory 306
The memory area is divided into 32 Kbyte units, and writing (reading of image data) and reading (during printing)
Code data is stored in each area in consideration of enabling simultaneous control with. Management page for each page
Bull MT1 has a number indicating the area of the code memory 306,
The page number, the number of the concatenated area, and various additional data necessary for the compression / expansion processing such as the compression method and the data length are stored, and the code memory 306 is based on these information. Is managed dynamically.

FIG. 6A shows the contents of the management table MT1. Pre-concatenation means the concatenation area of the memory area of 32 Kbyte unit in the page in the forward direction and the first area. The number 00 indicates the first area,
Other numbers indicate forward region numbers. Similarly, the post-connection indicates the connection area in the backward direction of the memory area and whether or not it is the final area. The letter FF indicates the last area, and the numeral indicates the area number in the backward direction.

FIG. 6B shows the contents of the code memory 306. For example, the compressed data 1 of page 1 is stored in the memory addresses 0 to 32k, and the memory address 3 is stored.
It is shown that the compression data 2 of page 1 is stored in 2k to 64k.

When the CPU 106 reads out the image data from the image memory 304 and compresses it, it stores the management table MT.
While creating the information of No. 1, the compressor 311 is controlled and stored in the code memory 306. Further, when outputting image data, the code data is read from the code memory 306 by the reverse operation. The information in the management table MT1 is erased when the required number of copies of the information of the corresponding page are normally discharged.

The operation mode of the memory unit section 30 includes two operations, a memory mode writing operation and a memory mode reading operation. The former operation is the image memory after binarizing the image data D2. This is an operation for fetching it into 304 and performing a predetermined process.
This is an operation of reading out image data from 04 and outputting it as image data D3 to the print processing section 40.

Next, regarding the operation sequence of the entire copying machine in each operation mode, commands such as requests and replies transmitted or received among the CPUs 101 to 108, or data.
The explanation will focus on the flow of data. In the following figure,
Commands such as insignificant requests and responses may be omitted.

FIG. 7 shows the operation mode of the memory mode write operation.
It is a figure which shows a can. As explained earlier, the memory mode
In the write operation, the image memory 30 is read from the reader IR.
4, the image data is transferred and stored.

First, C which manages the entire sequence
The PU 105 issues a memory preparation request to the CPU 106. In response to this, the CPU 106 sets, to the internal hardware, the connection state of the switching unit 301 for transferring the image data D2 from the image signal processing unit 20 to the image memory 304 (see FIG. 5) and the binary value. Mode (for example, error distribution method, threshold for erasing background, binary threshold, etc.) for setting processing, start address of the writing area to the image memory 304, and XY length information setting. To do.

When these settings are completed and preparation is completed, C
A memory ready response is issued from the PU 106 to the CPU 105. In response to this, the CPU 105 to the CPU 1
06 and the CPU 102 issue a read request, and the CPU 102 issues a scan request to the CPU 103. This starts Sukiyan.

When the scanner 19 reaches the image area of the document, the read data (image data D2) is output to the memory unit section 30 in accordance with the image processing mode set by the CPU 102.

When the scanning of the image by the scanning device 19 is completed, the CPU 103 issues a scanning completion response to the CPU 102, and the CPU 106 and the CPU 102 issue a scanning completion response to the CPU 105. After that, the CPU 105 issues a compression request to the CPU 106, and in response to this, the CPU 106 receives the read address from the image memory 304, the XY length information, the write address to the code memory 306, and the mode of the compressor 311. (For example, MH system) is set, and activation is performed. As a result, the compression process is performed and the code data is stored in the code memory 306. When the compression process is completed, the CPU 106 sends a compression completion reply to the CPU 105.

FIG. 8 is a diagram showing the operation sequence of the memory mode read operation. As described above, in the memory mode reading operation, the image data is read from the image memory 304, output to the printer PRT, and printed.

First, the CPU 105 issues a decompression request to the CPU 106. In response to this, the CPU 106 reads the read address from the code memory 306, the data amount, the write address to the image data 304, the XY length information,
Also, the mode (for example, MH system) of the expander 312 is set and activated. As a result, decompression processing is performed and the image data is written in the image memory 304.

When the expansion process is completed, the CPU 106 sends an expansion completion reply to the CPU 105. next,
The image memory 30 is sent from the CPU 105 to the CPU 106.
4 issues a memory preparation request for reading the image data. In response to this, the CPU 106 causes the internal hardware to transfer the image data from the image memory 304 to the print processing unit 40.
The connection state of the switching unit 301 for outputting the data D3, the setting for rotation processing, the start address of the read area of the image memory 304, and the XY length information are set.

When these settings are completed and preparation is completed,
The CPU 106 sends a memory preparation completion response to the CPU 105. In response to this, the CPU 105 causes the CPU 10
A print request is issued to No. 4. Receiving this, CPU1
When a paper feed response is sent from 04 to the CPU 105 to inform the conveyance state of the recording paper, the image memory 304
The image data D3 read from the printer is the printer PRT.
And is printed.

When the printing is completed, the CPU 106 and the CPU 104 issue a print completion reply and an eject completion reply to the CPU 105. In response,
The CPU 105 issues a memory clear request or the like to the CPU 106 in relation to the operation mode.

[Copy Mode] Next, a specific example of the copy mode in the case where the document reversing mechanism of the ADF 500 and the recording paper sheet re-feeding unit 600 cannot operate will be described with reference to FIGS. Explain. First, the manuscript is A4 size as shown in FIG.
It is assumed that the original is an N page double-sided sheet.

Referring to FIGS. 10 to 12, both sides of the original are scanned.
In the copy and copy single-sided 2in1 mode, the copy operation when the ADF original reversing mechanism is operable and inoperable will be described.

First, when the document reversing mechanism of the ADF is operable, the documents are set in the ADF with the first page up, and the document reversing mechanism of the ADF is used to set the originals one by one. While reversing the numbers, enter the numbers (page
Read the original image in the order of Then, printing is performed on one side of the A3 size recording paper in the order of the numbers entered in the drawing of FIG. According to the above processing, in the case of the copy mode in the both-sided original mode and the one-sided 2 in 1 mode, N / 2 double-sided originals are copied on one side of the N / 2 recording paper in the order of page arrangement. It

When the document inversion mechanism of the ADF cannot operate, the document is turned over in the ADF unlike the usual case (the first page is turned downward) and set, and the Read the original images in the order of the numbers entered in the figure in a). After that, the stack of discharged originals is set in the same manner as in the usual case (the first page is turned up), and then, as shown in FIG.
The original images are read in the order of the numbers entered in the diagram (b). Then, printing is performed on one side of the A3 size recording paper in the order of the numbers entered in the drawing of FIG. According to the above processing, in the case of the copy both sides mode in the copy one side 2in1 mode, it is N / 2 without utilizing the document inversion mechanism of the ADF.
A double-sided original is copied onto one side of N / 2 recording papers in the order of page arrangement.

FIG. 13 and FIG. 14 show the case of the double-sided original mode and the weekly magazine binding mode. First, as in the case of the copy one-sided 2in1 mode in the above-described two-sided original mode, the original image is read in the order of the numbers entered in the drawings of FIGS.
When the total number of pages N of the original document is divisible by 4, as shown in FIG. 13A, when it is divided by 4, the remainder is 3, when it is divided by 4, as shown in FIG. 13B. When the remainder is 2, as shown in FIG. 13 (c), when divided by 4, when the remainder is 1, as shown in FIG. 13 (d), as shown in FIG. Print in the order of the numbers written on the surface of.

Thereafter, the accumulation of the printed recording paper is carried out by the manual paper feed unit 700 or the normal paper feed cassettes 80a, 80.
14b is turned upside down and stacked, and printed on the back surface of the recording paper in the order of the numbers written on the front surface of the recording paper of FIGS. 14 (a) to 14 (d).

For example, in FIG. 14A, m is a variable indicating the order of the output of the recording paper. For example, m = 1 is 1
This shows the second recording paper that has been printed and discharged, and the page number on the front surface of the recording paper is "2" at the bottom of the recording paper.
"N-1" indicates that the page number of the recording paper surface is N-1. Further, "1" on the upper side of the recording paper indicates that the page number on the back surface of the recording paper is 1, and "N" indicates that the page number on the back surface of the recording paper is N. The numbers in other recording papers also indicate the page numbers on the front surface or the back surface of the recording paper.

By the above-mentioned processing, in the weekly magazine binding mode in the two-sided original mode, N / 2 double-sided originals can be printed in N without using the ADF reversing mechanism and the recording paper re-feeding unit. /
The four sheets of recording paper are copied in the order of page arrangement. After that, the stack of the respective printed recording papers is folded in half in the center in the stacked state, and is bound at the crease, whereby the weekly magazine binding can be realized.

Next, a specific example of the copy single-sided mode in the single-sided original mode when the originals are not arranged in page order will be described with reference to FIGS. 2, 3 and 15. First, it is assumed that the original is a single-sided sheet original of A4 size and 6 pages as shown in FIG. In FIG. 15A, n
Is a number indicating the order of reading the manuscript, for example, n = 1
Indicates the first document fed from the ADF, and "3" in the lower stage of the document indicates that the page number of the document is 3. The numbers in other manuscripts also indicate the page numbers of the manuscripts.

First, by pressing the page input key 90 shown in FIG. 2, a message prompting the input of the page number to be added to each original shown in FIG. 3 (c) is a liquid crystal touch panel. It is displayed at 91. According to the message, enter the page numbers of the originals in order from the first original, and when the page number of the last page has been input, enter the page input key.
By pressing 90 again, the entered page number is confirmed.

After that, when the original image is read in the order shown in FIG. 15B, the image shown in FIG.
The figures are printed in the order of the numbers entered in the figure. By the above processing, when the originals are not arranged in the page order and the originals are in the one-sided copy mode and the one-sided copy mode, the originals of the page arrangement shown in FIG. The pages are copied in the order of page arrangement input from the input key.

The memory write control and memory read control in the copy mode described above will be described in detail below with reference to the flow chart.

[Control Operation] Next, the operation of the copying machine will be described with reference to the flowcharts shown in FIGS. First, the main routine executed by the CPU 101 to the CPU 108 will be described, and then the main routine will be described.
The subroutine in the chin will be described.

FIG. 16 is a flowchart of the main routine executed by the CPU 101 which controls various input keys on the operation panel OP, input signals from various sensors, and display output to the display section on the operation panel OP. -It is a chart. First,
Initialization is carried out (step # 11), and an internal timer for keeping the processing time for one routine constant is set to start clocking (step # 12).

Control processing of input signals from various switches from the operation panel OP, various sensors inside the copying machine (step # 13), display control processing to the liquid crystal display panel, display elements, etc. on the operation panel OP. (Step # 14),
Other internal mechanisms are controlled (step # 15),
Wait for the internal timer to finish measuring time (step # 16), and return to step # 12. Note that other CPUs 102 to CPU
Communication with 106 is executed by interrupt processing.

FIG. 17 shows a CPU 102 for image processing.
It is a main routine flow chart executed in.
First, initial settings are made (step # 21), the internal timer is set, and clocking is started (step # 22).
Data input processing (step # 23).

It is determined whether or not the document is a book document reading mode (step # 24), and if it is a book document, the orientation of the document (vertical or horizontal) is determined (step # 2).
5). If the orientation of the original is horizontal, it is determined that the original is the front cover, and if it is not horizontal, it is determined that the original is a two-page spread, and the determination result is the inquiry of the reading result described later. Is sent to the CPU 106 as an answer to (steps # 26, # 27). If it is determined in step # 24 that the document is not in the book document reading mode, the process immediately proceeds to step # 28.

In order to match the time difference due to the position shift of the photoelectric conversion elements 16 and 17, position adjustment processing is performed (step # 28), color discrimination processing, image processing, image data processing.
Data output processing and other processing (step # 2).
9- # 32). Waits for the internal timer to finish measuring time (step # 33), and returns to step # 22.

FIG. 18 is a CPU for controlling the drive of the scanning system.
It is a main routine flow chart executed in 103. First, initialization is performed (step # 41), the internal timer is set, and clocking is started (step # 42).

It is judged whether or not it is the Bucksukyan mode (step # 43), and if it is the bucksukyan mode, the scanning control of the bucksukyan is performed (step # 44). If it is not the bucksukyan mode, the normal scanning control is performed. (Step # 45). It waits for the internal timer to finish measuring time (step # 46), and returns to step # 42.

FIG. 19 is a CPU for controlling the drive of the scanning system.
Flow of motor pulse interrupt control executed in 103
It is a chart.

The scanning motor M2 rotates by the scanning control, but when the motor pulse interrupt is generated by the motor pulse generated in synchronization with the rotation of the scanning motor M2, the interrupt time interval of the motor pulse is measured. Then, the motor is turned on and off to control the drive (step # 48), and the number of pulses is counted (step # 49).

FIG. 20 is a flowchart of the main routine executed by the CPU 104 which controls the print processing unit, the laser optical system, the image forming system, the printer controller and the like. First, initialization is performed (step # 51), the internal timer is set, and clocking is started (step # 52).

The development transfer system 70A is controlled (step # 5
3), the conveyance system 70B is controlled (step # 54), and the fixing system 70C is controlled (step # 55).
Is controlled (step # 56), and other processing is performed (step # 57). It waits for the internal timer to finish measuring time (step # 58), and returns to step # 52.

In the process of step # 54 for controlling the transport system 70B, the recording paper size is detected by the size detection sensors SE11 and SE12, and the re-feed path length, recording paper distance,
And the number of stackable sheets in the paper passing path from the recording paper size to C
It is calculated by the PU 104. Since the re-feed path length and the distance between recording sheets are constant, the stackable number of sheets in the sheet passing path can be obtained from the detected recording sheet size. Further, in step # 54, the paper feeding operation of the manual paper feeding unit 700 is also controlled.

FIG. 21 is a flow chart of the main routine executed by the CPU 105 which controls the overall operation of the copying machine 1 by issuing start and stop commands and operation mode sets to other CPUs. It is a chart. First, initialization is performed (step # 61), the internal timer is set, and clocking is started (step # 62).

The contents of various data input by the interrupt processing are analyzed (step # 63), and if the operation mode is changed, the mode is set (step # 64).

Commands such as writing and reading control to the memory according to the copy mode are set (step # 6).
5), the data output by the interrupt processing is set (step # 66), and other processing is performed (step # 6).
7). Wait for the internal timer to finish counting (step # 6
8) Then, return to step # 62.

FIG. 22 is a main routine flow chart executed by the CPU 106 which controls the memory unit section 30. First, make the initial settings (step # 7
1) The command receiving process from another CPU is performed (step # 72), and the status transmitting process is performed (step # 73). Further, writing control to the image memory (step # 74), compression control (step # 75),
Decompression control (step # 76), read control from the image memory (step # 77), other processing (step # 7)
Perform step 8) and return to step # 72.

FIG. 23 is a CPU for controlling the ADF 500.
It is a main routine flow chart executed at 107. First, initialization is performed (step # 81), the internal timer is set, and clocking is started (step # 8).
2). Control processing of input signals from various sensors of the ADF 500 (step # 83) and conveyance control of the document are performed (step # 84). It is judged whether or not the original has been set on the original glass (step # 85). If the original has been set, a scan start request is issued (step # 86) and other processing is executed (step # 85). # 8
7). Wait for the internal timer to finish counting (step # 8
8) Then, return to step # 82.

FIG. 24 is a CP for controlling the refeed unit 600.
It is a main routine flow chart executed in U108. First, initialization is performed (step # 91), the internal timer is set, and clocking is started (step # 9).
2). Control processing of input signals from various sensors of the re-feed unit 600 (step # 93), conveyance control of re-feed (step # 94), and other processing are performed (step # 9).
5). Wait for the internal timer to finish counting (step # 9
6), return to step # 92.

25 to 27 are flow charts showing the details of the input signal control processing shown as step # 13 in the flow chart of FIG.

First, the selection setting state of the original mode is judged by the on-edge of the original mode setting key 98 (step # 1).
01), if it is on-edge, the lighting state of the display portion 98a indicating the selection of the one-sided original mode is determined (step # 10).
2). When the light is on, the display unit 98a is turned off, and the display unit 98b indicating the selection of the both-sided original mode is turned on, and the both-sided original mode is displayed.
Mode is set (step # 103).

If the display portion 98a is turned off in the determination of step # 102, the display portion 98b indicating the selection of the both-sided document mode is displayed.
The lighting state of is determined (step # 104). If it is on, the display unit 98b is turned off, the display unit 98c showing the selection of the book mode is turned on, and the book mode is set (step # 105).

If the display portion 98b is turned off in the determination of step # 104, the display portion 98c is turned on, so the display portion 98c is turned off, and the display portion 98a indicating selection of the one-sided original mode is turned on. The one-sided original mode is set (step # 106).

The copy mode selection and setting state is changed to the copy mode.
Judgment is made by the on-edge of the setting key 97 (step # 10
7) In the case of on-edge, the lighting state of the display portion 97a indicating the selection of the copy single-sided mode is determined (step # 10).
8). If it is turned on, the display unit 97a is turned off, the display unit 97b showing the selection of the copy-duplex mode is turned on, and the copy-duplex mode is set (step # 109).

If it is determined in step # 108 that the display portion 97a is off, the display portion 97 indicates the selection of the copy double-sided mode.
The lighting state of b is determined (step # 110). When it is turned on, the display unit 97b is turned off, the display unit 97c indicating the selection of the single-sided 2in1 mode is turned on, and the single-sided 2in1 mode is set (step # 111).

If the display portion 97b is turned off in the determination of step # 110, the display portion 9 showing the selection of the single-sided 2in1 mode.
The lighting state of 7c is determined (step # 112). If it is turned on, the display unit 97c is turned off, the display unit 97d indicating the selection of the double-sided 2in1 mode is turned on, and the double-sided 2in1 mode is set (step # 113).

If the display portion 97c is turned off in the judgment of step # 112, the display portion 9 showing the selection of the both sides 2in1 mode.
The lighting state of 7d is determined (step # 114). If it is turned on, the display unit 97d is turned off, the display unit 97e showing the selection of the single-sided 4in1 mode is turned on, and the single-sided 4in1 mode is set (step # 115).

If it is determined in step # 114 that the display section 97d is off, the display section 9 showing the selection of the single-sided 4in1 mode.
The lighting state of 7e is determined (step # 116). If it is turned on, the display unit 97e is turned off, the display unit 97f indicating the selection of the both sides 4in1 mode is turned on, and the both sides 4in1 mode is set (step # 117).

If it is determined in step # 116 that the display portion 97e is off, the display portion 9 indicating the selection of both sides 4in1 mode.
The lighting state of 7f is determined (step # 118). When it is turned on, the display unit 97f is turned off, the display unit 97g indicating the selection of the weekly magazine binding mode is turned on, and the weekly magazine binding mode is set (step # 119).

If it is determined in step # 118 that the display portion 97f is off, the display portion 97g is turned on, so the display portion 97g is turned off, and the display portion 97a indicating the selection of the copy single sided mode is turned on. , Copy one-sided mode is set (step # 120).

The process moves to the flow chart shown in FIG. The state of selection of the page input mode is judged by the on-edge of the page-input key 90 (step # 121). If it is on-edge, it is determined whether or not the page-input mode is already set. The determination is made (step # 122). If the page input mode is not set, the page input mode is set (step # 123), the variable p indicating the number of the original is set to "1", and the page input mode is set. -A message prompting the user to input a message (see (c) in Fig. 3) is displayed on the operation panel (steps # 124, # 1).
25).

If it is determined in step # 122 that the page input mode is already set, it is determined whether or not there is an input page number (step # 126), and the input page number is input. If there is a number, the page number is registered in the page number buffer "p" (step # 127), the variable p indicating the number of the original is incremented by 1 and the page is printed.
A message prompting the user to input a message (see (c) in FIG. 3) is displayed on the operation panel (steps # 128, # 129). If it is determined in step # 126 that there is no page number input, the page input is terminated (step # 130).

Moving to the flow chart shown in FIG. Whether or not the start key 96 on the operation panel for instructing the start of copying is operated is judged whether the start key is on-edge (step # 131), and if it is on-edge, it is judged whether it is copy mode or not. (Step # 132). In the case of copy mode, it is determined whether or not the paper feed sensor SE71 of the manual paper feed section 700 is on (step # 133). When it is on, the recording paper is set in the manual paper feed section 700. Therefore, check the completion of the first print when copying on both sides,
If it has been completed, a print start request is output (steps # 134, # 135).

If it is determined in step # 132 that the copy mode is not set, the empty sensor SE5 of the ADF 500 is detected.
4 is off (step # 136), and if it is off, a scan start request is output (step # 1).
37). If the empty sensor SE54 is not off, the document is set in the ADF paper feed section and the SE54 is on. Therefore, the ADF mode is set (step # 138), and the first reading is completed. Is determined (step # 139). If the reading is not completed, the first reading is set, and if the reading is completed, the second reading is set and an ADF start request is output (step # 1).
40, # 141, # 142).

In order to determine whether or not all the originals have been read, it is first determined whether or not the mode is the ADF mode (step # 143). If the mode is not the ADF mode,
The on-edge of the reading completion key 99 on the operation panel is determined (step # 144). In the case of on-edge, it is confirmed that the data exists in the image memory, the memory read operation is started (steps # 145, # 146), and the main rule is executed.
Return to Chin.

If the result of the determination in step # 143 is ADF mode, it is confirmed that the final document has been ejected (step # 147). When the final document is discharged, it is determined whether or not it is the both-sides reading mode writing operation of the original (step # 148), and if it is the both-sides reading mode writing operation, it is determined whether it is the first reading. Yes (Step # 14
9). If it is the first read, the completion of the first read is set (step # 150), and the process returns to the main routine. If it is determined in step # 149 that the reading is not the first reading, the second reading is completed. Therefore, the process proceeds to step # 146 and the memory reading operation is started. Also, step # 1
If it is determined in step 48 that the original both sides reading mode writing operation is not performed, the operation is a normal memory mode writing operation, and therefore the process proceeds to step # 146 and the memory reading operation is started.

FIG. 28 is a flow chart showing the details of the display control shown as step # 14 in the flow chart of FIG.
It is a chart.

First, it is determined whether the reading mode or the copy mode is selected (step # 161). In the read mode,
It is determined whether or not the first reading of the original is completed (step # 162), and if the reading is completed, a message prompting the original to be set in the original feeding tray ((a) in FIG. 3).
Is displayed on the operation panel (step # 163).
If the reading is not completed, the process immediately returns to the main routine.

If the copy mode is determined in step # 161, it is determined whether or not the first printing is completed (step # 164). If the printing is completed, the ejected recording paper is A message (see FIG. 3 (b)) prompting the user to set on the manual feed tray is displayed on the operation panel (step # 165). If the printing is not completed, the process immediately returns to the main routine.

FIGS. 29 and 30 are flow charts showing the details of command setting, shown as step # 65 in the flow chart of FIG.

First, it is determined whether the reading mode or the copy mode is selected (step # 211). In the case of the reading mode, which original mode the original mode is, that is, the original single-sided mode, the original double-sided mode, the book original mode, and the page input mode. It is determined which of the two is (step # 212).

If the result of the determination is that the original is single-sided mode, the command required for the normal single-sided memory mode writing operation is set (step # 213).

In the case of the both-sided document mode, it is determined whether the ADF inversion mechanism is operable (step # 21).
4) If the operation is possible, the command necessary for the normal double-sided memory mode writing operation is set (step # 215). If the operation is not possible, the command necessary for the original double-sided memory mode writing operation is set (step # 215). # 216).

In the normal book document reading mode, the command necessary for the normal book memory mode writing operation is set (step # 217). Further, in the case of page input mode, the command necessary for the page input memory mode write operation is set (step # 218).

The process moves to the flow chart shown in FIG. If the read mode is not determined in step # 211, which copy mode is the copy mode, that is, copy one-sided copy, copy both-sided mode, copy one-sided 2in1 Mode,
It is determined whether the mode is the copy double-sided 2in1 mode, the copy single-sided 4in1 mode, the copy double-sided 4in1 mode, or the weekly magazine binding mode (step # 221).

If the result of determination is that copy-single-sided mode, the command necessary for the operation of copy single-sided mode is set (step # 222). If it is the copy double-sided mode, it is judged whether or not the re-feeding section 600 is operable (step # 2).
23) If the operation is not possible, set the command necessary for the copy double-sided mode read operation (step # 224). If the operation is possible, set the command necessary for the normal copy-double-sided mode read operation. (Step # 225).

In the case of copy single-sided 2in1 mode, the command necessary for the operation of copy single-sided 2in1 mode is set (step # 226), and in the case of copy double-sided 2in1 mode, the refeed unit 600 Determines whether or not the operation is possible (step # 22
7) If operation is not possible, set the command required for the copy double-sided 2in1 mode read operation (step # 22).
8) If it is operable, set a command necessary for normal copy double-sided 2in1 mode read operation (step # 22).
9).

In the case of copy single-sided 4in1 mode, the command necessary for the operation of copy single-sided 4in1 mode is set (step # 230), and in the case of copy double-sided 4in1 mode, the re-feed unit 600 Is operable (step # 23
1) If the operation is not possible, set the command necessary for the copy double-sided 4in1 mode read operation (step # 23).
2) If it is operable, set the command required for the normal copy double-sided 4-in-1 mode read operation (step # 23).
3).

In the case of the weekly magazine binding mode, the paper re-feed unit 60
It is determined whether 0 is operable (step # 234). If the operation is not possible, the command required for reading the weekly magazine binding mode is set (step # 235). The commands necessary for the magazine binding mode reading operation are set (step # 236).

FIG. 31 shows the details of the command settings necessary for the normal document double-sided memory mode writing operation when the ADF reversing mechanism shown as step # 215 in the flow chart of FIG. 29 is operable. It is a flow chart.

First, the write state is determined (step # 241). In the case of state 0, CPU 101 and C
It is determined whether or not a start request is issued from the PU 107 (step # 242), and if there is a start request, the read request is registered in the buffer and the state is set to 1 (step # 243, # 244), return to the main routine.

In the case of state 1, it is judged whether or not there is a read completion reply from the CPU 102 (step # 245), and in the case of read completion, the page number P is registered in the compression request buffer (step # 246). The page number P is incremented by 1 and the state is set to 0 (step # 24
7. Step # 248), return to main routine.

The contents of the read request buffer and the contents of the compression request buffer are set so as to be output at step # 66 in FIG. By the above processing, the compression data corresponding to the page of the double-sided sheet original is registered in the management table shown in FIG.

FIG. 32 shows the details of the command setting necessary for the original double-sided memory mode writing operation when the ADF inversion mechanism shown as step # 216 in the flow chart of FIG. 29 cannot operate. It is a flow chart.

First, the write state is determined (step # 251). In the case of state 0, CPU 101 and C
It is determined whether or not a start request is issued from the PU 107 (step # 252), and if there is a start request, the read request is registered in the buffer and the state is set to 1 (step # 253, # 254), return to the main routine.

In the case of state 1, it is judged whether or not there is a read completion reply from the CPU 102 (step # 260), and in the case of read completion, it is judged whether or not it is the first reading (step # 261). When the first reading is completed, the page number P1 is registered in the compression request buffer (step # 26).
2), the page number P1 is incremented by 2 (step # 263), and the state is set to 0 (step # 263).
266), return to the main routine. If the first reading is not completed, the page number P2 is registered in the compression request buffer (step # 264), the page number P2 is incremented by 2 (step # 265), and the state is set to 0. (Step # 266) and return to the main routine.

The contents of the read request buffer and the contents of the compression request buffer are set to be output at step # 66 in FIG. By the above processing, the compression data corresponding to the page of the double-sided sheet original is registered in the management table shown in FIG.

FIG. 33 shows the details of the command setting necessary for the page input memory mode writing operation when the originals shown as step # 218 in the flowchart of FIG. 29 are not arranged in the page order. It is a flowchart shown.

First, the write state is judged (step # 301). In the case of state 0, CPU 101 and C
It is judged whether or not a start request is issued from the PU 107 (step # 302), and if there is a start request, the read request is registered in the buffer and the state is set to 1 (step # 303, # 304), and return to the main routine.

In the case of state 1, it is judged whether or not there is a read completion reply from the CPU 102 (step # 305), and in the case of read completion, the page number p is registered in the compression request buffer (step # 306). Further, the page number p is incremented by 1 (step # 307), the state is set to 0 (step # 308), and the process returns to the main routine.

The contents of the read request buffer and the contents of the compression request buffer are set so as to be output at step # 66 in FIG. By the above processing, the compression data corresponding to the page of the double-sided sheet original is registered in the management table shown in FIG.

FIG. 34 is a flow chart showing the details of the command setting required for the memory mode read operation in the case of the one-sided 2in1 mode shown as step # 226 in the flow chart of FIG. is there. Here, the decompression request command and the print request command are set so that the output form as shown in FIG. 12 is obtained.

First, the read state is judged (step # 401). When the reading state is 0, the total page written in the memory as a variable indicating the total number of pages of image data.
The number N of bits is set (step # 403). Then, the page number "1" is registered in the decompression request buffer, and the page number "2" is further registered in the decompression request buffer (step # 4).
04, # 405).

The contents of the decompression request buffer are read in the set processing of the output data in step # 66 of FIG. 21, and are output if there is a registered number.

Subsequently, the variable m indicating the page number is set to "3" for the processing of the next read state (step #
406), the print request "front side" for the surface of the recording paper is registered in the print request buffer (step # 407),
Set the read state to 1 (step # 408),
Return to the main routine.

By registering the print request in the above expansion request buffer, the page number "m" registered with the expansion request is added as a parameter and transmitted to the CPU 106, and the CPU 106 sends this parameter to this parameter. Based on this, the compression data is extracted from the management table of FIG. 6 and the decompression process is performed. In this case, page numbers "1" and "2"
Will be transmitted to the CPU 106.

A parameter indicating whether the side to be printed is the front side or the back side of the recording paper is added to the print request buffer, and when it is transmitted to the CPU 104, the CPU 104 judges this parameter, and in the case of "front side". Is a paper cassette 80
The sheet is controlled to be fed from a or 80b, and in the case of "back side", a command is transmitted to the CPU 108, and
Alternatively, the sheet is controlled to be fed from the manual feed unit 700.

If the read state is 1 in the determination of step # 401, it is first determined whether or not a paper feed response is received (step # 411). When the paper feed response is received, it is judged whether the reading of all pages is completed (step #
412) If not completed, the page number "m" is registered in the decompression request buffer (step # 413).

Furthermore, it is determined whether the final page is registered in the expansion request buffer because the total number of pages is odd (step # 415). That is, when N ≠ m (total page number ≠ final page number m), the page number "m" is sent to the expansion request buffer.
+1 ”is registered (step # 416), and N = m (total page
When the number of pages = the final page number m), step # 416 is omitted. Further, the page number m is incremented by 2 (m + 2) (step # 417), the print request for the recording paper surface is registered in the print request buffer (step # 418), and the process returns to the main routine.

If the paper feed response is not received in the determination of step # 411, the expansion request buffer and the print request buffer are not updated.

Further, in step # 412, all pages are judged.
If the reading of all the recording sheets has been completed, it means that the feeding of all the recording sheets has been completed. Therefore, the reading state is set to 0 (step # 414), and the process returns to the main routine.

FIGS. 35 to 38 show the sheet re-feeding section 600 shown as step # 235 in the flowchart of FIG.
Is a flow chart showing the details of the command setting necessary for the memory reading operation of the weekly magazine binding mode when is not possible. Here, the expansion request command and the print request command are set so that the output forms shown in FIGS. 13 and 14 are obtained.

First, the read state is determined (steps # 501, # 502, # 503), and the corresponding read state number is entered.

When the read state is 0, the total number of pages N written in the memory is set as a variable indicating the total number of pages of image data (step # 511).

Subsequently, an integer value obtained by dividing the total number of pages N by 4 is substituted for the variable n, and 2 is substituted for the variable m indicating the output of the recording paper (step # 512).

Next, the remainder obtained by dividing the total number of pages N by 4 is 0.
It is determined whether or not (step # 513). If the remainder is 0, it corresponds to (a) of FIG. 13, so the page number "N" is registered in the decompression request buffer (step # 514).
If the remainder is other than 0, that is, if the remainder is 1, 2, or 3, the page number is not registered in the decompression request buffer.

Next, for processing the front surface of the first recording sheet, the page number "1" is registered in the expansion request buffer (step # 515), and the "front surface" is registered in the print request buffer ( Step # 516) sets the read state to 1 (step # 517) and returns to the main routine.

Moving to the flow chart shown in FIG. If the read state is 1, it is first determined whether or not a paper feed response has been received (step # 521). When the paper feed response is received, the total number of pages N is divided by 4 to determine the remainder (steps # 522 to # 524).

When the remainder is 0, it corresponds to (a) of FIG. 13, so the page number "N-2m +" is displayed in the expansion request buffer.
2 "is registered, and" N-2m + 2 "is substituted into the variable E for judging the end of the first printing (step # 5.
26).

Since the case where the remainder is 3 corresponds to FIG. 13B, the page number "N-2m +" is displayed in the expansion request buffer.
3 "is registered and" N-2m + 3 "is substituted for the variable E (step # 527).

If the remainder is 2, it corresponds to (c) of FIG. 13, so the page number "N-2m +" is displayed in the expansion request buffer.
4 "is registered, and" N-2m + 4 "is substituted for the variable E (step # 528).

If the remainder is 1, it is judged whether or not it is the first recording sheet (m ≠ 2) (step # 525). If m ≠ 2, it corresponds to (d) of FIG. Register the page number "N-2m + 5" in the request buffer and "N" in the variable E.
"-2m + 5" is substituted (step # 529). Also,
If m ≠ 2, the page number is not registered in the decompression request buffer, and "N-2m + 5" is substituted for the variable E (step # 530).

Next, the page number "2" is sent to the expansion request buffer.
"m-1" is registered (step # 531). Then 1
In order to determine whether or not the second printing (printing on one side of the recording paper) is completed, it is determined whether or not the number obtained by subtracting (2m-1) from the variable E is 3 (step # 532).
When the number obtained by subtracting (2m-1) from the variable E is 3, the read state is set to 2 and the completion of the first printing is set (steps # 533, # 534). Further, the print request "front surface" for the front surface of the recording paper is registered in the print request buffer, the recording paper number m is incremented by 1 (steps # 535, # 536), and the process returns to the main routine. From the variable E in the determination of step # 532 (2m-1)
If the number subtracted is not 3, immediately go to step # 535.
Move on to the subsequent processing.

Moving to the flowchart of FIG. When the read state is 2, the data read processing for the second print processing (printing on the back surface of the recording paper) after the first print is completed is performed.

First, it is determined whether or not a start request for the second printing has been received (step # 540). If there is no start request, the set of recording paper to the manual feed section for the second print and the print start key are not pressed, so the expansion request buffer is updated and the print request buffer is updated. Is not updated, the main rule
Return to Chin.

If it is determined in step # 540 that there is a start request, an integer value obtained by dividing the total number of pages N by 4 is assigned to the variable n to determine the output of the recording paper. Variable m
2 is substituted for (step # 541), and the page number "2" is registered in the decompression request buffer (step # 542).

Next, the remainder obtained by dividing the total number of pages N by 4 is 0.
Or 3 (steps # 543, # 544). When the remainder is 0, it corresponds to FIG. 14A, so the page number "N-1" is registered in the decompression request buffer (step # 545), and when the remainder is 3, it is shown in FIG. ), The page number "N" is registered in the decompression request buffer (step # 546). If the remainder obtained by dividing the total number of pages N by 4 is neither 0 nor 3, that is, the remainder is 1 or 2.
In this case, since it corresponds to (c) and (d) of FIG. 14, the page number is not registered in the expansion request buffer.

The print request "back side" for the back side of the recording paper is registered in the print request buffer (step # 54).
7), set the read state to 3 (step # 54
8) Return to the main routine.

Moving to the flowchart of FIG. If the read state is 3, first, it is determined whether or not a reply for re-feeding has been received in response to the print request for the back surface of the recording paper (step # 551). When the response of re-feed is received, it is judged whether or not the reading of all pages is completed (step # 552). When the reading of all pages is completed, the reading state is set to 0. (Step # 565) and return to the main routine.

If the reading of all pages is not completed, the page number "2m" is registered in the expansion request buffer (step # 553).

Then, the total number of pages N is divided by 4 to determine the number of remainders (steps # 554 to # 556).

If the remainder is 0, it corresponds to (a) of FIG. 14, so the page number "N-2m +" is displayed in the expansion request buffer.
1 "is registered (step # 557), and the case where the remainder is 3 corresponds to FIG. 14B, the page number" N-2m + 2 "is registered in the expansion request buffer (step # 55).
8) If the remainder is 2, it corresponds to FIG. 14C. Therefore, the page number "N-2m + 3" is registered in the expansion request buffer (step # 559).
(D), the page number "N-2m + 4" is registered in the expansion request buffer (step # 560).

The print request "back side" for the back side of the recording paper is registered in the print request buffer, the recording paper number m is incremented by 1 (steps # 561, # 562),
Return to the main routine.

If the answer of re-feed is not received in the determination of step # 551, the expansion request buffer and the print request buffer are not updated.

FIG. 39 is a flow chart showing the details of the command receiving process shown as step # 72 in the flow chart of FIG.

Whether or not a command has been received is determined (step # 601), and if it has been received, the following processing is performed according to the type of command.

If it is a read command, the write state is set to 1 (steps # 602 and # 603), and if it is a compression command, the compression state is set to 1 (steps # 604 and # 605). If it is a decompression command, the decompression state is set to 1 (steps # 606, # 60).
7).

If it is a print command, the read state is set to 1 (steps # 608 and # 60).
9) If it is any other command, execute the process corresponding to the command (steps # 610, # 611),
Return to the main routine.

FIG. 40 is a flow chart showing details of the write control of the image memory, which is shown as step # 74 in the flow chart of FIG.

First, the state number is determined (step #
701, # 702) and the corresponding state number.

When the state is 0, the process immediately returns to the main routine without any processing.

If the state is 1, the memory unit setting process, that is, the write address to the image memory 304, the XY length information, the image processing parameters, etc. are set (step # 703), and the memory preparation is completed. Set status (step # 704), set state to 2 (step # 705), and return to main routine.

If the state is 2, the image memory 304
It is determined whether the writing to the
06), if it is not completed, it immediately returns to the main routine, but if it is completed, the reading completion status is set (step # 707) and the state is set to 0 (step). # 708) and return to the main routine.

FIG. 41 is a flow chart showing details of the compression control shown as step # 75 in the flow chart of FIG.
It is a chart.

First, the state number is determined (step #
721, # 722), and move to the corresponding state number.

When the state is 0, the process immediately returns to the main routine without any processing.

When the state is 1, a memory unit setting process, that is, a compression process such as a read address from the image memory 304, XY length information, a write address to the code memory 306, and a compression method is performed. Make settings and change the contents of the management table MT1 (step #
725) and set the state to 2 (step # 72
6) Return to the main routine.

When the state is 2, the memory unit setting process is performed every compression process for one memory area divided into 32 kbytes. First, the end of one compression process is determined (step # 731). If not completed, the process returns to the main routine and the compression process is continued. The end of the compression processing of is determined (step # 732).

If the compression processing for one page has been completed, the compression processing completion status is set (step # 7).
33) and set the state to 0 (step # 73
4) Return to the main routine. If the compression process for one page is not completed, the memory unit setting process is performed (step # 735) and the process returns to the main routine.

FIG. 42 is a flow chart showing the details of extension control shown as step # 76 in the flow chart of FIG.
It is a chart.

First, the state number is determined (step #
741, # 742), and move to the corresponding state number.

When the state is 0, the process immediately returns to the main routine without any processing.

If the state is 1, it is judged whether or not the designated page has already been compressed (step # 745).
If it has been decompressed, the memory unit is set (step # 746), the state is set to 2 (step # 747), and the process returns to the main routine. Step # 745
If it is determined that the expansion has not been completed, the expansion error status is set (step # 748), the state is set to 0 (step # 749), and the process returns to the main routine.

If the state is 2, it is judged whether the expansion processing of the designated page is completed (step # 751). If it is completed, the expansion completion status is set (step # 7).
52) and set the state to 0 (step # 75
3) Return to the main routine.

FIG. 43 is a flow chart showing the details of the image memory read control shown as step # 77 in the flow chart of FIG.

First, the state number is determined (step #
761, # 762), and move to the corresponding state number.

If the state is 0, the process immediately returns to the main routine without any processing.

If the state is 1, a memory unit setting process is performed. That is, the read start address from the image memory 304, the amount of data, and other parameters are set (step # 763), the state is set to 2 (step # 764), and the process returns to the main routine. .

If the state is 2, the image memory 304
It is judged whether the reading of the image data from the
65) When it is finished, the print completion status is set (step # 766), the state is set to 0 (step # 767), and the process returns to the main routine.

FIG. 44 is a flow chart showing the details of the input control of the ADF 500, shown as step # 83 in the flow chart of FIG.

First, it is determined whether or not the switching claw 508 is operated (step # 801). If the switching claw 508 is operating, a sensor for detecting that the switching claw 508 is in the state of reversing the original is used. It is determined whether or not a certain SE53 is on (step # 802). Switching claw 5 when on
08 is in the normal position, the document reversal "OK" is set (step # 803). When it is OFF, the switching claw 508 is not in the normal position, and therefore the document reversal "disable" is set (step # 804). Return to the main routine.

At step # 801, the switching claw 508 is determined.
If it is not operated, it is determined whether or not the sensor SE53 is off (step # 805). When the switch claw 508 is off, the document inversion "OK" is set because the switching claw 508 is in the normal position (step # 806). When the switch claw 508 is not in the normal position, the document inversion "disable" is set. (Step # 807), return to main routine.

FIG. 45 is a flow chart showing the details of the input control of the re-feed unit 600, which is shown as step # 93 in the flow chart of FIG.

First, it is determined whether or not the switching claw 601 is operated (step # 811), and if the switching claw 601 is operating, a sensor for detecting that the switching claw 601 is in the state of re-feeding. It is determined whether or not SE63 is ON (step # 812). Switching claw 50 when on
8 is in the normal position, the re-feeding “permitted” is set (step # 813). When it is off, the switching pawl 508 is not in the normal position and re-feeding “disabled” is set (step # 81).
4) Return to the main routine.

At step # 811, the switching claw 601 is determined.
If the sensor SE63 is off, it is determined whether the sensor SE63 is off (step # 815). If it is off, the switching pawl 601 is in the normal position, so re-feeding “permitted” is set (step # 816). Set (step # 817) and return to main routine.

In the above embodiment, the memory unit unit 3
The image memory 304 provided for 0 may use a plurality of memory chips as long as the writing operation and the reading operation can be performed independently at the same time, and the area of one memory chip is divided and used. Good.

In the above embodiment, the ADF 50
An ADF of a type in which an original is conveyed to a reading position on the original glass 18 by a 0 conveyance belt 506 and an original is scanned by a scanner 19 is used.
The same can be done when the scanner 19 is fixed at a specific position, and a follow shot type ADF is used in which a document is conveyed on the scanner 19 for reading and scanning.

Further, in the above embodiment, the multi-manual sheet feeder having the sorting mechanism in the manual sheet feeder is adopted. However, even when the single manual sheet feeder having no sorting mechanism is adopted, the operation is performed. The same operation can be performed by sequentially feeding the recording paper to the manual paper feeding unit.

Further, in the above embodiment, the recording paper 2
Although the manual paper feeding unit is used as the paper feeding device for the first printing, the same procedure is performed by reversing the page order of the first printing when the normal paper feeding device is adopted. It can be carried out.

In addition, the circuit configuration of the control unit 100 including the memory unit unit 30 and each of the CPUs 101 to 108.
The processing contents, the software structure such as processing sharing, and the configuration of each unit of the image forming apparatus can be variously modified without departing from the spirit of the present invention.

[0206]

As described above, according to the present invention, a two-sided original mode for reading a two-sided original in which images are recorded on both sides of the original sheet, and a copy for recording an image on both sides of the recording paper. In the digital image forming apparatus having the double-sided mode, when the document double-sided mode is selected and it is determined that the document reversing unit of the document conveying unit cannot operate,
First, in the order of the originals set in the original conveying means,
The surface is conveyed to a predetermined reading position and read by the image reading means, and the page order of the print images is controlled by the reading order. When the image reading on the first side of the original is completed, the originals that have been read and reset by the original conveying means are conveyed to the predetermined reading position on the second side of the original in the same order as the previous conveying order. The image is read by the image reading means, and the page order of the print images is managed in an order different from the reading order.

When it is determined that the original reversing means of the original conveying means is operable, the first and second surfaces of the original are sequentially conveyed to a predetermined reading position in the order of the originals set in the original conveying means. The image is read by the image reading means, and the page order of the print images is managed according to the reading order.

As a result, when the document reversing means of the document conveying means is inoperable, it is possible to make a copy in the order of pages of double-sided documents without using the document reversing means.

[Brief description of the drawings]

FIG. 1 is a sectional view showing the outline of the overall configuration of a copying machine to which the present invention is applied.

FIG. 2 is a plan view showing a configuration of an operation panel.

FIG. 3 is a plan view showing a display example on a liquid crystal touch panel.

FIG. 4 is a block diagram showing a circuit configuration of a control unit of the copying machine.

FIG. 5 is a circuit block diagram of a memory unit unit of a control unit.

FIG. 6 is a diagram showing a relationship between a management table and a code memory.

FIG. 7 is a diagram showing an operation sequence of a memory mode write operation.

FIG. 8 is a diagram showing an operation sequence of a memory mode read operation.

FIG. 9 is a diagram illustrating a document sheet.

FIG. 10 is a view (No. 1) for explaining the reading order of original sheets.

FIG. 11 is a view (No. 2) for explaining the reading order of original sheets.

FIG. 12 is a diagram (part 1) for explaining the order of image printing.

FIG. 13 is a diagram (part 2) for explaining the order of image printing.

FIG. 14 is a diagram (part 3) illustrating the order of image printing.

FIG. 15 is a diagram illustrating a document sheet, a reading order, and an image printing order.

FIG. 16 is a main routine flowchart executed by the CPU 101.

FIG. 17 is a main routine flowchart executed by the CPU 102.

FIG. 18 is a main routine flowchart executed by the CPU 103.

FIG. 19 is a flowchart of motor pulse interrupt control executed by the CPU 103.

FIG. 20 is a main routine flowchart executed by the CPU 104.

FIG. 21 is a main routine flowchart executed by the CPU 105.

FIG. 22 is a main routine flowchart executed by the CPU 106.

FIG. 23 is a main routine flowchart executed by the CPU 107.

FIG. 24 is a main routine flowchart executed by the CPU 108.

FIG. 25 is a flowchart (1) showing the details of the control processing of the input signal.

FIG. 26 is a flowchart (part 2) showing details of control processing of an input signal.

FIG. 27 is a flowchart (part 3) showing details of control processing of an input signal.

FIG. 28 is a flowchart showing details of display control.

FIG. 29 is a flowchart (part 1) showing details of command setting.

FIG. 30 is a flowchart (part 2) showing details of command setting.

FIG. 31 is a flow chart showing details of command settings necessary for a normal original both-sided memory mode writing operation.

FIG. 32 is a flow chart showing the details of command setting required for the operation for writing both sides of the original in the memory mode.

FIG. 33 is a flow chart showing details of command setting required for page input memory mode write operation.

FIG. 34 is a flowchart showing details of command settings required for a memory mode read operation in one-sided 2in1 mode.
G.

FIG. 35 is a flowchart (part 1) showing the details of command setting necessary for a memory read operation in the case of binding a weekly magazine.

FIG. 36 is a flowchart (part 2) showing the details of command setting necessary for a memory read operation in the case of binding a weekly magazine.

FIG. 37 is a flowchart (No. 3) showing the details of command setting necessary for a memory reading operation in the case of binding a weekly magazine.

FIG. 38 is a flowchart (part 4) showing the details of command setting necessary for a memory reading operation in the case of binding a weekly magazine.

FIG. 39 is a flowchart showing details of command reception.

FIG. 40 is a flowchart showing details of image memory writing control.

FIG. 41 is a flowchart showing details of compression control.

FIG. 42 is a flowchart showing the details of extension control.

FIG. 43 is a flowchart showing details of image memory read control.

FIG. 44 is a flowchart showing details of ADF input control executed by the CPU 107.

FIG. 45 is a flowchart showing the details of the refeed unit input control executed by the CPU.

[Explanation of symbols]

 10 scanning system 20 image signal processing unit 30 memory unit unit 40 printing processing unit 60 laser optical system 70 image forming system 500 original document conveying unit (ADF) 600 re-feeding unit 700 manual paper feeding unit IR reader PRT printer device

Claims (2)

[Claims] 1. An image reading unit for reading an original image, converting the image into an image signal, and outputting the image signal; and a plurality of storage areas corresponding to respective pages of the original, and a plurality of pages read by the image reading unit. Image signal storage means for storing each of the image signals of the original document in the plurality of storage areas, and on both sides of the recording paper based on the image signals read from the plurality of storage areas of the image signal storage means. An image forming unit for forming an image, an original conveying unit for conveying the original sheet to a predetermined reading position on the original table, and an operation mode for forming an image, a double-sided original document reading mode. A digital image forming apparatus having a copy double-sided mode for recording an image on both sides of a recording paper, comprising a control means, wherein the control means, when the original double-sided mode is selected, The originals of the original conveying means When it is determined that the transfer means is in an inoperable state, the first surface of the original is conveyed to a predetermined reading position in the order of the original set in the original conveying means, and the image is read by the image reading means. , The page order of the images to be printed is managed in the reading order, and when the image reading of the first side of the original is completed, the original that has been read and reset by the original conveying means is conveyed first. The second surface of the original is conveyed to a predetermined reading position in the same order as the original, the image is read by the image reading means, and the page order of the images to be printed is managed in a different order from the reading order. If it is determined that the original reversing means of the conveying means is operable, the first and second surfaces of the original are sequentially conveyed to a predetermined reading position in the order set by the original conveying means, and the image is transferred. Image by reading means A digital image forming apparatus, characterized in that reading and controlling the page order of images to be printed in the reading order are controlled. 2. The control means is in a state in which the document reversing means of the document conveying means is inoperable when the document conveying means is not provided with a document reversing means for reversing the front and back of the document sheet. The digital image forming apparatus according to claim 1, wherein the digital image forming apparatus is controlled by determining that